WO1996012917A1 - Dispositif de transmission pour conditionneur d'air - Google Patents
Dispositif de transmission pour conditionneur d'air Download PDFInfo
- Publication number
- WO1996012917A1 WO1996012917A1 PCT/JP1995/002141 JP9502141W WO9612917A1 WO 1996012917 A1 WO1996012917 A1 WO 1996012917A1 JP 9502141 W JP9502141 W JP 9502141W WO 9612917 A1 WO9612917 A1 WO 9612917A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- communication path
- communication
- centralized
- control unit
- unit
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
- H04L12/2838—Distribution of signals within a home automation network, e.g. involving splitting/multiplexing signals to/from different paths
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
- H04L12/2816—Controlling appliance services of a home automation network by calling their functionalities
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
- H04L2012/2847—Home automation networks characterised by the type of home appliance used
- H04L2012/285—Generic home appliances, e.g. refrigerators
Definitions
- the present invention relates to a transmission device for an air conditioner, and more particularly to an improvement in a transmission device that enables operation control between a heat source side control unit and a use side control unit and centralized control by a centralized control unit.
- an outdoor unit and an indoor unit are connected by a refrigerant pipe, as disclosed in Japanese Patent Application Laid-Open No. 59-21049, and
- an outdoor control unit for controlling an air conditioner and an indoor control unit for controlling an indoor unit are connected by a communication path of the own system.
- the outdoor control unit and each indoor control unit constitute one control group for transmitting and receiving various control signals such as an operation signal and a mode signal.
- the control group includes a centralized controller for centrally controlling the outdoor control unit and the indoor control unit.
- the centralized controller is connected to the outdoor control unit so that a centralized control signal can be transmitted and received via a centralized communication path. Have been.
- the central control signal transmitted from the central controller is temporarily received by the microcomputer of the outdoor control unit, and the outdoor unit is controlled based on the received central control signal. Further, the centralized control signal is transmitted from the microcomputer to the indoor control unit, whereby the indoor unit is controlled based on the centralized control signal, whereby the outdoor control unit and the indoor control unit are integrated. Centrally controlled.
- a transmission system shown in Fig. 9 has been proposed.
- This system consists of a control unit (c,..., D, d,-) and a centralized controller provided in each outdoor unit (a, a, one) and each indoor unit (b, b, "').
- (E) are sequentially connected in series by one communication path (f)
- each control unit (c, c, ..., d, ...) and the centralized controller (e ) The wiring length of the communication path (f) connecting it becomes short, and the configuration can be simplified.
- the present invention has been made in view of these points, and a plurality of control groups can be integrated into one centralized control unit without complicating the wiring of the entire transmission system in the air conditioner.
- the purpose is to enable centralized control.
- Another object of the present invention is to secure the reliability of the transmission system by avoiding the function of the entire transmission system from being stopped when a part of the communication path becomes unable to communicate. .
- the present invention has a plurality of control groups (8A, 8B,%) That connect the heat source side control unit (5) and the use side control unit (6).
- the heat source side control units (5, 5,...) Of each control group (8A, 8B,...) are connected to the centralized communication path (10), and the control groups (8A, 8B,.
- the local network (7) is connected to the centralized channel (10) to form one network (NW).
- a centralized control unit (9) is connected to the network (NW).
- the measures taken by the invention according to claim 1 include a heat source side control unit (5) for controlling the heat source side unit (3) and a use side unit (4). It has a plurality of control groups (8 ⁇ , 8 ⁇ ,%) That are connected to the user-side control unit (6) that controls the signal transmission and reception via the own system communication path (7).
- control units (5,5, %) on the heat source side of each control group (8 ⁇ , 8...,...) are connected to the centralized communication line (10) so as to be able to transmit and receive via the force centralized communication line (10). , 5,...),
- the local communication path (7) is connected to the centralized communication path (10) to form one transmission network (NW).
- the transmission network (NW) is connected with a central control unit (9) that centrally controls the heat source unit (3,3, ...) and the use unit (4,4, ), ing.
- the means taken by the invention according to claim 2 is that in the invention according to claim 1 described above, conduction and interruption between the own system communication path (7) and the centralized communication path (10) are achieved. (28) It is configured to be provided with force.
- the means taken by the invention according to claim 3 is the invention according to claim 2, wherein the communication path blocking means (28) is included in the control group (8A, 8B,).
- the communication path blocking means (28) is included in the control group (8A, 8B,).
- the means according to the fifth aspect of the present invention is connected to the central control unit (9) ⁇ the centralized communication path (10) in the invention of the second aspect.
- Communication state determining means (32) for determining the communication state of the own system communication path (7); If the output of m ⁇ (32) is received and at least ⁇ own communication paths (7) cannot be communicated, the communication between the own ffil communication path (7) and the centralized communication path (10) which cannot be communicated is performed.
- a means taken by the invention according to claim 6 is that, in the invention according to claim 2, the central control unit (9) is connected to the centralized communication path (10).
- the communication state determining means (32) for determining the communication state of the centralized communication path (10) and the output of the communication state determining means (32) are received and the centralized communication path (10) cannot communicate, All communication paths (7, 7, ...) and the centralized communication path (10) are disconnected by the communication path disconnecting means (28).
- a means taken by the invention according to claim 7 is that, in the invention according to claim 2, the central control unit (9) is connected to the centralized communication path (10).
- the centralized communication path (10) comprises two signal lines (10a, 10b) for transmitting signals, and a relay (28a , 28b) is provided to open and close two signal lines (10a, 10b) simultaneously.
- the heat source side control unit (5) and the use side control unit (6) are connected via the own system communication path (7).
- a control signal is transmitted and received between Each heat source side unit (3,3, ...) and each use side unit (4,4, ...) are controlled based on this control signal.
- the units on the heat source side (3,3, ...) and the units on the user side (4,4, ...) are transmitted from the central control unit (9) via the transmission network (NW).
- the centralized control signal is transmitted to the user side control unit (6) via the transmission network (NW), the centralized control unit (9) and each control group (8A, 8B,...) It is not necessary to provide a plurality of centralized communication paths that are individually connected. In other words, wiring that enables centralized control can be realized only by connecting the centralized control unit (9) to the local communication path (7) or the centralized communication path (10). Therefore, the whole system! ⁇ Is simplified.
- the plurality of own system communication paths (7) and the centralized communication path (10) constitute one transmission network (NW), there is no restriction on the connection position of the centralized control unit (9). (See dashed line in Figure 1).
- conduction and interruption between the heat source side control unit (5) and the centralized communication path (10) are performed by the operation of the communication path cutoff means (28).
- the communication path cutoff means (28) Will be In other words, when the equipment is installed, if addresses are set for each heat source side control unit (5,5,...) And each user side control unit (6,6,.
- the local communication path (7) and the centralized communication path (10) can be connected or disconnected. As a result, the address setting operation can be performed while switching the partner unit that can transmit and receive to and from each of the heat source side control units (5,5, '%) And each of the user side control units (6,6,).
- the communication path disconnecting means (28) of the control group (8A, 8B, ...) is turned off so that no signal is transmitted to the other control groups (8A, 8B, ). Nevertheless, if the signal power is transmitted to other control groups (8A, 8B,...), the erroneous recognition means (31) of the heat source side control unit (5) that has received the signal is erroneous. Recognizes E ⁇ and outputs an erroneous wiring detection signal to the local system communication path (7). This makes it possible to accurately detect errors.
- the communication path disconnection instructing means (33) when at least one of the own system communication paths (7) cannot perform power communication, the communication path disconnection instructing means (33) outputs the inoperable own system communication path (7). And the centralized communication path (10) is cut off by the communication path cut-off means (28).
- the communication path disconnection instructing means (33) when the centralized communication path (10) cannot perform the communication, the communication path disconnection instructing means (33) is connected to all the own system communication paths (7, 7, ).
- the centralized communication path (10) to the control unit (9) is cut off by the communication path cutoff means (28).
- the communication path disconnection instructing means (33) sets the communication path disconnecting means (28 ) Is shut off.
- the normal communication of the own system communication path (7) and the centralized communication path (10) are maintained, and the normal control group (8A, 8B,...) Continues to operate. As a result, the stoppage of the entire ait system is avoided.
- the communication path disconnecting means (28) is a relay (28a, 28b), it is a connection part of the centralized communication path (10) in the heat source side control unit (5). Only one set of interface power is required, and the configuration is simplified. In addition, power loss when the relays (28a, 28b) are turned on is small, and it is hard to be affected by disturbance due to noise.
- transmission by the centralized communication path (10) is performed by the control signals transmitted from the two signal lines (10a, 10b).
- the centralized communication path (10) is disconnected by the communication path cutoff means (28)
- the relays (28a, 28b) are opened synchronously. For this reason, the signal lines (10a, 10b) are maintained at an angle of about 5 degrees, and the reliability of the system is secured.
- the heat source side control units (5, 5,%) Of each control group (8A, 8B,...) are connected to the centralized communication path (10).
- the local communication path (7) of each control group (8A, 8B,...) Is connected to the centralized communication path (10) to form one transmission network (NW).
- the control unit (9) can be wired to the feill network (NW) only by purging it with purple to enable centralized control.
- control groups (8A, 8B,%) can be centrally controlled by one central control unit (9) without complicating the wiring.
- the communication path cutoff means (28) is provided between the heat source side control unit (5) and the centralized communication path (10).
- the address setting operation can be performed while switching the other unit that can transmit and receive to and from (5,5, %) and each control unit (6,6, ).
- the communication path disconnecting means (28) is constituted by the relays (28a, 28b), the connection of the centralized communication path (10) in the heat source side control unit (5) is established. Only one set of interface parts is required, and the configuration can be simplified. In addition, power loss when the relays (28a, 28b) are turned on is small, and it is possible to adopt a configuration that is not easily affected by disturbance due to noise.
- the centralized communication path (10) is composed of two signal lines (10a, 1 Ob), and the relay (28a, 28b) is connected to each signal line (10a, 10b). I'll set up and open and close synchronously As a result, the balance of both signal lines (10a, 10b) can be maintained, and the reliability of the fe3 ⁇ 4 system can be ensured.
- FIG. 1 is a block diagram showing specific items of the present invention.
- FIG. 2 is a block diagram showing specific matters of another invention.
- FIG. 3 is a transmission system diagram of the air-conditioning apparatus according to Embodiment 1.
- FIG. 4 is a block circuit diagram of the outdoor control unit.
- FIG. 5 is a system diagram for explaining the address setting operation.
- FIG. 6 is a system diagram for explaining an incorrect wiring detection operation.
- FIG. 7 is a system diagram of transmission control of the air-conditioning apparatus according to Embodiment 2.
- FIG. 8 is a control flow chart showing an operation when a communication error occurs.
- FIG. 9 is a transmission system diagram of an air conditioner showing a conventional example.
- FIG. 3 shows a system of the air conditioner (1) according to the first to fourth, eighth, and ninth embodiments.
- This air conditioner (1) includes a plurality of refrigerant circulation groups (2 ⁇ , 2 ⁇ , 2C, 2D), and the refrigerant circulation groups (2 ⁇ , 2 ⁇ , 2C, 2D) are configured into four in FIG.
- the four refrigerant circulation groups (2 ⁇ , 2 ⁇ , 2C, 2D) are connected to one indoor unit (3) and four indoor units (4, 4, ...) by one refrigerant unit (not shown). The forces are connected in parallel with one another.
- the outdoor unit (3) is a heat source side unit including an outdoor heat exchanger having a compressor (not shown), a four-way switching valve, and a fan, and an outdoor electric expansion valve.
- the unit (4) is a utilization unit including an indoor electric expansion valve (not shown) and an indoor heat exchanger having a fan.
- Each of the refrigerant circulation groups (2A, 2B, 2C, 2D) has a reversible refrigerant flow direction between the cooling operation mode and the heating operation mode.
- the outdoor unit (3) has an outdoor control unit (5) as a heat source side control unit, while the indoor unit (4) has an indoor control unit (6) as a use side control unit. ing.
- the control units (5, 6, 6, ...) in the same refrigerant circulation group (2B, 2C, 2D) are connected to each other by the own system communication path (7) so that control signals can be exchanged with each other. It has four control groups (8A, 8B, 8C, 8D) corresponding to the refrigerant circulation groups (2A, 2B, 2C, 2D). That is, one refrigerant circulation group (2A, 2B, 2C, 2D) forms one control group (8A, 8B, 8C, 8D), and each control group (8A, 8B, 8C, 8D) The air conditioning operation is controlled.
- the outdoor control units (5, 5,...) are connected to a centralized controller (9) as a centralized control unit by a centralized communication path (10).
- each outdoor control unit (5, 5,-) is connected to the centralized communication path (10)
- each outdoor control unit (5, 5, ...) is connected via the centralized communication path (10).
- Each outdoor control unit (5, 5,%) Has its own communication path (7) connected to the centralized communication path (10) and is connected so that transmission and reception are possible. It is configured.
- the control signal from the centralized controller (9) is transmitted to each outdoor control unit (5,5, %) and each indoor control unit by the centralized communication path (10) and each own system communication path (7.7, ).
- the unit (6,6 ") is sent to each outdoor unit (3,3, %) and the indoor unit (4,4, %) are centrally controlled.
- the remote control (11) is strongly connected to each indoor unit (4,4, ).
- a control signal such as a set temperature is transmitted and received between the remote control (11) and the indoor control unit (6), and the power of each indoor unit (4, 4,%)
- the remote control (11) Is controlled by An ON / OFF controller (12,12, ...) and a schedule timer (13) are connected to the centralized communication path (10).
- the ON / OFF controller (12, 12, ...) sends operation and stop control signals to the multiple indoor units (4, 4, 7)
- the iSfll controls the indoor unit (4,4, ...) for each group.
- the schedule timer (13) sets an operation start time and a stop time for each of a plurality of indoor units (4, 4,7), For example, on a weekly basis. Next, it describes the circuit configuration of each control Yunitto for exchanging control signals (5, 6, 9) 0
- the transmission method between the outdoor control unit (5), the indoor control unit (6), and the centralized controller (9) is a balanced communication method using the AMI (Alternate Mark Inversion) communication method. It is configured to perform half-duplex signal transmission with the specified polarity.
- AMI Alternate Mark Inversion
- the outdoor control unit (5) includes a transmission circuit (20), a reception circuit (21), and a polarity determination circuit (22), and includes the transmission circuit (20) and the reception circuit (21).
- the polarity judgment circuit (22) is connected to the microcomputer (30).
- the indoor control unit (6) and the centralized controller (9) are composed of a transmission circuit (20), a reception circuit (21), and a polarity determination circuit (22) having substantially the same configuration as the outdoor control unit (5). It has. Therefore, here, the circuit configuration will be described using the outdoor control unit (5) as an example.
- the own system communication path (7) and the centralized communication path (10) are respectively composed of a positive signal line (7a, 10a) and a negative signal line (7b, 10b).
- the transmission circuit (20) transmits a control signal to the local system communication path (7) and the centralized communication path (10) in accordance with an output signal from the microcomputer (30), and includes two drivers (20a, 20b), and the positive signal lines (7a, 1) of the local communication path (7) and the centralized communication path (10) are provided.
- Each driver (20a, 20b) is connected to a common wiring (23, 24) connected to Oa) and the negative signal line (7b, 10b) via a coupling S3 ⁇ 4
- the receiving circuit (21) is connected to the common 1 (23, 24) via the coupling wiring (21a, 21b), and receives the control signals of the local system 1 communication path (7) and the centralized communication path (10). Output to the microcomputer (30).
- the polarity determination circuit (22) is connected to the local signal line via the common wiring (23, 24) .3 ⁇ 4
- the positive signal lines (7a, 10a) and the negative signal of the 1 communication path (7) and the centralized communication path (10) It is connected to the line (7b, 10b), and determines the polarity of the local system communication path (7) and the centralized communication path (10).
- the driver (20a, 20b) of the transmission circuit (20) can invert the control signal to be transmitted based on the different polarity determination of the polarity determination circuit (22).
- a DC superposition circuit (25) is connected to the own system communication path (7) and the centralized communication path (10) via a first switching circuit (26).
- This DC superimposition circuit (25) is connected to the positive signal lines (7a, 10a) and the negative signal lines (7b, 10b) of each communication path (7, 10) via power lines (25a, 25b).
- the DC power supply (27) applies a predetermined DC voltage, for example, a DC voltage of +15 V, to both communication paths (7, 10).
- the first switching circuit (26) includes two relay switches (26a, 26b) provided on each power line (25a, 25b), and a DC superimposing circuit (26) is opened and closed by opening and closing the two relay switches (26a, 26b). 25) and the communication paths (7, 10).
- the two relay switches (26a, 26b) are opened and closed under the control of the microcomputer (30), and the relay switches (26a, 26b) of the preset outdoor control unit (5) are closed so that the DC superposition circuit (26) is closed. 25) and each communication path (7, 10) conduct, and a DC voltage is superimposed on each communication path (7, 10).
- the outdoor control unit set to address "A” The DC superposition circuit (25) of (5) applies a DC voltage to each communication path (7, 10), and the relay switches (26a, 26b) of the other outdoor control units (5) are opened.
- a terminating resistor (25c, 25d) is inserted between the power supply lines (25a, 25b), and a DC power supply (27) is connected between the two power supplies (25a, 25b).
- Capacitor (25e) is connected.
- the terminating resistors (25c, 25d) suppress the occurrence of signal waveform distortion in each communication path (7, 10).
- the capacitor (25e) holds the impedance of each communication path (7, 10) at a predetermined low value.
- the centralized communication path (10) is provided with a second opening / closing circuit (28) as a communication path cutoff means.
- This second switching circuit (28) has two relay switches (28a, 28b) provided in the centralized communication path (10), and opens and closes both relay switches (28a, 28b) under the control of the microcomputer (30).
- These relay switches (28a, 28b) are closed in the normal transmission state, and after the equipment is installed, each outdoor unit (3, 3,...) And each indoor unit (4, 4) , ⁇ ) is controlled by the microcomputer (30) when setting addresses. Address setting operation 1
- the master unit and set an address number for each unit (3, 3, ..., 4, 4, 7)
- the operation of setting the control address for each unit (3,4,4, ...) belonging to each control group (8A, 8B, 8C, 8D) ⁇ ) is recognized in order.
- each operation will be described.
- the relay switches (28a, 28b) of the second switching circuit (28) are turned on, and transmission and reception between the outdoor control units (5, 5, ...) via the centralized communication path (10) is possible.
- a power supply slave unit This is called a power supply slave unit. This operation is repeated, and only the one outdoor unit (3) having the smallest serial number that has finally won becomes the power supply master unit, and the other outdoor units (3,3,...) become.
- the power supply base unit determined in this way always turns on the relay switches (26a, 26b) of the first switching circuit (26) in the normal transmission state and turns on the DC superimposition circuit (25). DC voltage is applied to each communication path (7, 10).
- a forced master unit setting button is provided on the printed circuit board of each outdoor control unit (5, 5, ). You may. Then, when the operator presses the setting button, the outdoor unit is
- the power supply master unit transmits the master unit determination operation code (hereinafter abbreviated as parent determination 0 PC) to each outdoor control unit.
- a DC superimposition circuit (25) is provided in the centralized controller (9) so that the centralized controller (9) has a power supply function. It may be. Also in this case, the parent decision 0 PC is the central controller
- one of the outdoor units (3,3, ...) assigns a control address number to each unit (3,3, ..., 4,4, ...)
- This operation is determined by the outdoor unit (hereinafter referred to as the address setting master unit) that performs the operation.
- This operation is determined by the address setting master unit in the same manner as the operation of determining the power supply master unit due to the conflict between the serial numbers indicated by ⁇ ⁇ . Then, the address setting master unit determined by this operation sets different control address numbers for all indoor units (4, 4, ...) and all outdoor units (3, 3, ).
- FIG. 5 shows only two control groups (8 ⁇ , 8 ⁇ ) for easy understanding.
- the outdoor unit (3a) located on the left side of the two outdoor units (3a, 3b) is determined as the address setting master unit. ing.
- the address setting master unit (3a) first (4a, 4b, 4c, 4d), assign the indoor control address number.
- "1 to 4" are used as address numbers for the sake of simplicity.
- the address setting master unit (3a) assigns an outdoor control address number to each outdoor unit (3a, 3b) including itself.
- "A, B" is used as an address number for simplicity.
- the relay switch (28a, 28b) of the second switching circuit (28) is turned off to disable transmission and reception between the outdoor control units (5, 5, ...) by the centralized communication path (10). Only transmission and reception between the outdoor control unit (5) and the indoor control unit (6, 6,%) Using the local system communication path (7) is enabled. In this state, the transmission / reception via the own-system communication path (7) causes the outdoor control unit (5) and the indoor control unit (6, 6,%) Recognize This recognition operation will be specifically described based on FIG.
- the outdoor unit (3a) with the address number power “A” is compared with the indoor unit (4a, 4b) with the address numbers “1” and “2”, and this outdoor unit (3a) and each indoor unit.
- the address signal is transmitted via the own system communication channel (7c) that descends with (4a, 4b). By this address signal, each indoor unit (4a, 4b) recognizes that the address number of the connected outdoor unit (3a) is "A".
- the room unit (4a) with the address number “1” has its own address number “1”. In addition, it recognizes the address number “A” of the connected outdoor unit (3a). Even in the indoor unit (4b) with address number "2", it recognizes the address number "A" of the connected outdoor unit (3a) in addition to its own address number "2".
- the outdoor unit (3a) with the address number "A” reads the address data of each indoor control unit (4a, 4b) connected by the own system communication path (7c), and the address number is " It recognizes that the indoor units (4a, 4b), which are “1” and “2”, are connected.
- Such operating force is also performed by other control groups (8B).
- the control group (8B) in which the outdoor unit (3b) whose address number is “B” and the indoor units (4c and 4d) whose address numbers are “3” and “4” are connected Each of them recognizes the address number of the other unit.
- the operation of recognizing the system address is performed by using the control address to recognize the address number of the partner unit for each control group (8A, 8B,). May set another system address.
- the address number of the connection unit may be recognized for each control group (8A, 8B,...) Using this system address.
- the address setting operation is completed by such a series of operations. After that, when the operation of the air conditioner (1) starts, the power supply master turns on the relay switches (26a, 26b) of the first switching circuit (26) and turns on the DC weight circuit (25) and each communication path ( And the DC voltage is superimposed on each communication path (7, 10).
- all the power supply slave units are the re-switches (26a, 26b) of the first switching circuit (26). To OFF state.
- the outdoor control units (5, 5,%) Of each control group (8A, 8B,...) are connected to the centralized communication path (10), and
- the centralized controller (9) is transmitted because the local communication path (7) of the group (8A, 8B, ...) is connected to the centralized communication path (10) to form one transmission network (NI).
- Centralized control is possible by simply connecting to the network (N1).
- the simplification of the wiring can reduce the possibility of causing erroneous wiring, and can improve the reliability of the transmission system. That is, according to the present embodiment, a plurality of control groups (8A, 8B,%) Can be centrally controlled by one centralized controller (9) without incurring complicated wiring.
- each outdoor control unit (5,5,%) When setting an address to the control unit (6, 6 "), the communication path disconnecting means (28) connects or disconnects the local system communication path (7) and the centralized communication path (10). As a result, the address setting is performed while switching between the outdoor unit (5,5,%) And the indoor unit (6,6,. It can be performed.
- the second switching circuit (28) is configured by a relay (28a, 28b), an interface that is a connection part of the centralized communication path (10) in the outdoor control unit (5) is formed as a set. And the configuration can be simplified. Also, the configuration is such that the power loss when the relays (28a, 28b) are turned on is small, and is not easily affected by disturbance due to noise. Can be
- the centralized communication path (10) is composed of two signal lines (10a, 10b), and relays (28a, 28b) are provided on each signal line (10a, 10b) to open and close synchronously. Since the balance between the two signal lines (10a, 10b) can be maintained, the reliability of the i3 ⁇ 4i system can be ensured.
- FIG. 6 a control group (8A) having an outdoor unit (3a) having an address number “A” and a control group (8B) having an outdoor unit (3b) having an address number “B” are shown. ). Then, the centralized communication path (10) extending from the control group (8B) is directly connected to the communication path (7) of the control group (8A) without passing through the outdoor control unit (5a). ing. A case where the recognition of the error i3 ⁇ 43 ⁇ 4 is performed during the above-described system address recognition operation will be described.
- each outdoor unit (3a, 3b) controls only the indoor unit (4a, 4b, 4c, 4d) of the control group (8A, 8B) to which it belongs. Transmit the address signal for use.
- each outdoor unit (3a, 3b) turns off the second switching circuit (28), and the address signal is transmitted to the indoor control unit (4a, 4b, 4c, 4d) of another control group (8A, 8B). ), And the second switching circuit (28) is turned on except when transmitting this address signal.
- each outdoor control unit (5a, 5b) has an incorrect wiring recognition means (31a, 31b), ⁇
- the wiring recognition means (31a, 31b) receives a control address signal from another control group (8A, 8B)
- the indoor unit (4a, 4b) connected by its own system communication path (7c, 7d) , 4c, 4d) to transmit an erroneous detection signal.
- the address signal is: Not only the indoor unit (4a, 4b) of the own system but also the outdoor unit (3b) of the other control group (8B) whose address number is "B” by the centralized communication path (10). (See the arrow in Figure 6).
- the second switching circuit (28) Since the outdoor unit (3b) with the address number "B" is not transmitting, the second switching circuit (28) is in the ON state, and the above-mentioned address signal indicates the outdoor unit having the address number "B". It is transmitted to the indoor units (4c, 4d) of the address numbers "3" and "4" via the outdoor control unit (5b) of the unit (3b). Then, in the present embodiment, it is detected that the miswiring recognizing means (31b) provided in the outdoor control unit (3b) has received an address signal of another control group (8A). The miswiring recognizing means (3 1b) generates a miswiring force in which the own system communication path (7) and the centralized communication path (10) are directly connected without passing through the outdoor control unit (5). Recognizing this, it transmits the miswiring recognition code to each indoor unit (4c, 4d) via the own system communication path (7d).
- Embodiment 2-FIGS. 7 and 8 show Embodiment 2 of the invention according to claims 5 to 9.
- FIG. 7 is a transmission system diagram corresponding to FIG. 3 of the first embodiment, and shows only three control groups (8A, 8B, 80) in a simplified manner.
- the first control group (8A ) And the second control group (8B) have one indoor unit (4), and the third control group (8C) has two indoor units (4, 4). .
- a communication path disconnection instruction means (33) for opening the second switching circuit (28) when a short circuit or the like occurs in the centralized communication path (10) is provided.
- step ST1 when the power is turned on, the centralized communication path (10) is opened and closed in step ST1. Turn on each relay switch (28a, 28b) in the circuit (28). As a result, transmission and reception between the centralized controller (9) and each control unit (5, 6) is enabled. In this state, the process proceeds to step ST2, the address setting operation as described in the first embodiment is performed, and the address numbers are assigned to the outdoor units (3, 3, %) and the indoor units (4, 4, ). Is given.
- step ST3 the relay switches (28a, 28b) are turned off, and the transmission / reception power between the centralized controller (9) and each control unit (5, 6) is disabled.
- the relay switches (28a, 28b) are turned off, and the transmission / reception power between the centralized controller (9) and each control unit (5, 6) is disabled.
- step ST4 the outdoor control unit using the own system communication path (7) is used.
- step ST6 it is detected whether or not a communication abnormal force has occurred. If the communication is normal, if NO, the process proceeds to step ST7, where normal communication is started.
- step ST6 determines whether the local communication path (7) or the centralized communication path (10) is short-circuited.
- the determination in step ST6 becomes YES, and the process proceeds to step ST8, where each of the relay switches (28a, 28b) is again set to the 0FF state. Then, transmission and reception between the centralized controller (9) and each control unit (5, 5,..., 6.6,...) is disabled, and the outdoor control unit (5) using the own system communication path (7) Only transmission and reception with the indoor control unit (6) are possible.
- step ST9 in which the transmission / reception via the own system communication path (7) is performed to determine whether or not the transmission / reception state in each control group (8A, 8B, 80) is normal. If the communication capability of (7) is not possible and the transmission / reception status in the control group (8A, 8B, 80 is abnormal), the determination in step ST9 becomes NO and the process moves to step ST10, where the indoor unit (4) is abnormal. An abnormality is indicated by a display lamp or the like.
- the transmission / reception state may be temporarily abnormal.
- the display of the abnormality is delayed by a predetermined time (for example, several minutes). Thereafter, the flow returns to step ST1 again to perform the same communication start operation as described above. If an error is still detected even after performing this communication again, the local system communication path (7) Determines that a communication error such as a short circuit has occurred, and continues to display the error .
- step ST9 if the transmission / reception state in the control group (8A, 8B, 80) is normal, the determination is YES and the process proceeds to step ST12. Turn on the switches (28a, 28b) to enable transmission and reception between the centralized controller (9) and each control unit (5, 5, ..., 6, 6, ).
- step ST8 to step ST12 only when the transmission / reception state in the control group (8A, 8B, 8C) is very abnormal, the relay switch (28a, Leave 28b) in the 0FF state
- the relay switch (28a, 28b) will return to the ON state.
- step ST13 it is determined again whether the communication is normal. And, in the case of normal communication power, normal communication operation determination in step ST13 is YES The operation control force of each unit (3, 4) is started. On the other hand, if a communication error has occurred, it means that a communication error such as a short circuit in the centralized communication path (10) has occurred instead of an error in the own system communication path (7).
- step ST13 the determination in step ST13 becomes NO, and the process proceeds to step ST14, in which all the relay switches (28a, 28b) of each control group (8A, 8B, 8C) are turned off.
- step ST14 transmission and reception between the centralized controller (9) and each control unit (5, 6) are disabled, and the outdoor control unit (5) and the indoor control unit (6) using the own system communication path (7) are not connected. Only the transmission / reception of the unit is possible, and transmission / reception is performed only within each control group (8A, 8B, 8C), and the outdoor unit (3) and the indoor unit (4) are controlled.
- steps ST6, ST9, and ST13 form communication state determining means (32)
- steps ST8, ST12, and ST14 form communication path disconnection instruction means (33).
- refrigerant circulation groups (2 ⁇ , 2 ⁇ , 2C, 2D) are provided, and four refrigerant circulation groups (2 ⁇ , 2 ⁇ , 2C, 2D) are provided for each outdoor unit (3).
- the present invention is not limited to this, and the present invention is not limited to this.
- One or more indoor units (4) may be connected, or one or more outdoor units (3) may be connected to one or more indoor units (4).
- Indoor unit (4) may be connected.
- the transmission device for an air conditioner according to the present invention is suitable for large-scale air conditioning provided with a plurality of control groups each including an outdoor control unit and an indoor control unit. It is suitable for centrally managing the air conditioning operation.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU37095/95A AU694999B2 (en) | 1994-10-19 | 1995-10-18 | Transmission device for air conditioner |
DE69532759T DE69532759T2 (de) | 1994-10-19 | 1995-10-18 | Übertragungsvorrichtung für klimaanlage |
EP95934838A EP0783091B1 (en) | 1994-10-19 | 1995-10-18 | Transmission device for air conditioner |
US08/809,732 US5853123A (en) | 1994-10-19 | 1995-10-18 | Signal transmission/reception device of air conditioner |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6/253138 | 1994-10-19 | ||
JP6253138A JP2970430B2 (ja) | 1994-10-19 | 1994-10-19 | 空気調和装置の伝送装置 |
JP6311424A JP3018929B2 (ja) | 1994-12-15 | 1994-12-15 | 空気調和装置の伝送装置 |
JP6/311424 | 1994-12-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996012917A1 true WO1996012917A1 (fr) | 1996-05-02 |
Family
ID=26541054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1995/002141 WO1996012917A1 (fr) | 1994-10-19 | 1995-10-18 | Dispositif de transmission pour conditionneur d'air |
Country Status (7)
Country | Link |
---|---|
US (1) | US5853123A (ja) |
EP (1) | EP0783091B1 (ja) |
CN (1) | CN1099006C (ja) |
AU (1) | AU694999B2 (ja) |
DE (1) | DE69532759T2 (ja) |
ES (1) | ES2217283T3 (ja) |
WO (1) | WO1996012917A1 (ja) |
Families Citing this family (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6505475B1 (en) | 1999-08-20 | 2003-01-14 | Hudson Technologies Inc. | Method and apparatus for measuring and improving efficiency in refrigeration systems |
KR100359806B1 (ko) * | 1999-12-15 | 2002-11-07 | 엘지전자 주식회사 | 다실형 공기조화기 |
JP2001241738A (ja) * | 2000-03-02 | 2001-09-07 | Sanyo Electric Co Ltd | 冷凍空調装置及びその制御方法 |
US20040016253A1 (en) * | 2000-03-14 | 2004-01-29 | Hussmann Corporation | Refrigeration system and method of operating the same |
US6973794B2 (en) | 2000-03-14 | 2005-12-13 | Hussmann Corporation | Refrigeration system and method of operating the same |
US6999996B2 (en) * | 2000-03-14 | 2006-02-14 | Hussmann Corporation | Communication network and method of communicating data on the same |
US7000422B2 (en) * | 2000-03-14 | 2006-02-21 | Hussmann Corporation | Refrigeration system and method of configuring the same |
US7047753B2 (en) | 2000-03-14 | 2006-05-23 | Hussmann Corporation | Refrigeration system and method of operating the same |
US6332327B1 (en) * | 2000-03-14 | 2001-12-25 | Hussmann Corporation | Distributed intelligence control for commercial refrigeration |
US6647735B2 (en) | 2000-03-14 | 2003-11-18 | Hussmann Corporation | Distributed intelligence control for commercial refrigeration |
JP3680146B2 (ja) * | 2000-04-03 | 2005-08-10 | ダイキン工業株式会社 | 施設運用方法 |
CN1227486C (zh) * | 2000-04-24 | 2005-11-16 | 三洋电机株式会社 | 空调机的通信系统 |
DE10040650A1 (de) * | 2000-08-19 | 2002-03-07 | Lampe U Martens Gebaeudetechni | Vorrichtung zum Steuern und/oder Überwachen der klimatischen Verhältnisse in einem Gebäude, insbesondere in einem öffentlichen Gebäude, vorzugsweise in einem Einkaufsmarkt |
US6401468B1 (en) * | 2001-03-27 | 2002-06-11 | Lockheed Martin Corporation | Autonomous control of heat exchangers |
DE60220730T2 (de) * | 2001-10-15 | 2008-02-07 | Lg Electronics Inc. | Klimaanlage und zugehoeriges Steuerungsverfahren |
KR100452349B1 (ko) * | 2001-10-15 | 2004-10-12 | 엘지전자 주식회사 | 공기조화 시스템 및 그 셋팅방법 |
US7775452B2 (en) * | 2004-01-07 | 2010-08-17 | Carrier Corporation | Serial communicating HVAC system |
US20050194456A1 (en) | 2004-03-02 | 2005-09-08 | Tessier Patrick C. | Wireless controller with gateway |
US20050195757A1 (en) * | 2004-03-02 | 2005-09-08 | Kidder Kenneth B. | Wireless association approach and arrangement therefor |
EP1724534B1 (en) * | 2004-03-09 | 2012-05-30 | Mitsubishi Denki Kabushiki Kaisha | Air conditioner, signal transmission method, and signal transmission method for air conditioner |
KR100631539B1 (ko) | 2004-10-26 | 2006-10-09 | 엘지전자 주식회사 | 멀티형 공기조화기의 통신선 오결선 검출시스템 및 방법 |
KR100640851B1 (ko) * | 2004-12-09 | 2006-11-02 | 엘지전자 주식회사 | 멀티 에어컨 시스템의 상태 모니터링 장치 및 그 방법 |
CN1330908C (zh) * | 2005-09-15 | 2007-08-08 | 珠海格力电器股份有限公司 | 多联机空调机组及其网络通讯方法 |
KR101289842B1 (ko) * | 2005-12-31 | 2013-07-26 | 엘지전자 주식회사 | 멀티 공기조화기 통합관리 시스템 및 그 제어방법 |
JP3979436B1 (ja) * | 2006-03-09 | 2007-09-19 | ダイキン工業株式会社 | 空気調和機および空気調和機におけるアドレス設定方法 |
JP4165581B2 (ja) * | 2006-07-11 | 2008-10-15 | ダイキン工業株式会社 | 空気調和装置の伝送装置 |
JP2008057893A (ja) * | 2006-08-31 | 2008-03-13 | Sanyo Electric Co Ltd | 空気調和システム及び空気調和システムの制御装置 |
KR100844324B1 (ko) * | 2007-01-26 | 2008-07-07 | 엘지전자 주식회사 | 멀티에어컨의 디맨드 제어시스템 및 디맨드 제어방법 |
DE102007042322A1 (de) | 2007-09-06 | 2009-03-19 | Head Technology Gmbh | Spannvorrichtungen zum Bespannen von Ballschlägern, insbesondere Tennisschlägern mit vorgefertigten Bespannungsnetzen |
KR101446284B1 (ko) * | 2007-11-05 | 2014-10-01 | 엘지전자 주식회사 | 공기조화기 |
JP2010041093A (ja) * | 2008-07-31 | 2010-02-18 | Sony Corp | 情報処理装置、及び双方向伝送方法 |
EP2570743A1 (de) * | 2011-09-15 | 2013-03-20 | TROX GmbH | Verfahren zur Zuordnung eines Kommunikationsweges zwischen zwei Komponenten eines klima- und raumlufttechnischen Anlagesystems zu einer, insbesondere erst noch zu bildenden, Kommunikationsgruppe |
JP5472333B2 (ja) * | 2012-01-26 | 2014-04-16 | ダイキン工業株式会社 | 空気調和機 |
US10852025B2 (en) | 2013-04-30 | 2020-12-01 | Ademco Inc. | HVAC controller with fixed segment display having fixed segment icons and animation |
CN104697128B (zh) * | 2015-03-05 | 2017-11-10 | 美的集团股份有限公司 | 空调器及其故障检测方法 |
CN105546730B (zh) * | 2015-12-23 | 2018-07-24 | 宁波奥克斯电气股份有限公司 | 多联式空调室内机的自动寻址方法 |
FI128693B (fi) * | 2016-11-08 | 2020-10-15 | Climecon Oy | Ilmanvaihtojärjestelmän kokoonpanon tunnistusmenetelmä |
US10674638B2 (en) * | 2017-01-26 | 2020-06-02 | Dell Products L.P. | Fail-on cooling system |
US20220333793A1 (en) * | 2019-11-12 | 2022-10-20 | Mitsubishi Electric Corporation | OUTDOOR UNIT, AIR-CONDITIONING SYSTEM, AND RECORDING MEDIUM (as amended) |
CN116761958A (zh) * | 2021-01-14 | 2023-09-15 | 大金工业株式会社 | 通信网络系统 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0424460A (ja) * | 1990-05-18 | 1992-01-28 | Fujitsu General Ltd | 空気調和機の集中制御方法 |
JPH04106359A (ja) * | 1990-08-28 | 1992-04-08 | Mitsubishi Heavy Ind Ltd | 空気調和機の遠隔監視システム |
JPH04121547A (ja) * | 1990-09-10 | 1992-04-22 | Mitsubishi Electric Corp | 空気調和機の制御システム |
JPH06241543A (ja) * | 1993-02-17 | 1994-08-30 | Mitsubishi Electric Corp | 空気調和システム |
JPH06319171A (ja) * | 1993-05-07 | 1994-11-15 | Mitsubishi Electric Corp | 伝送制御装置及びその乱数発生システム |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4333316A (en) * | 1980-10-14 | 1982-06-08 | General Electric Company | Automatic control apparatus for a heat pump system |
JPS59210249A (ja) * | 1984-03-27 | 1984-11-28 | Matsushita Electric Ind Co Ltd | 空気調和機 |
JPH07118832B2 (ja) * | 1989-12-29 | 1995-12-18 | ダイキン工業株式会社 | データ伝送装置及び空気調和装置の運転制御装置 |
US5279458A (en) * | 1991-08-12 | 1994-01-18 | Carrier Corporation | Network management control |
JP3113422B2 (ja) * | 1992-11-11 | 2000-11-27 | 三洋電機株式会社 | 空気調和機のアドレス自動設定方式 |
-
1995
- 1995-10-18 US US08/809,732 patent/US5853123A/en not_active Expired - Lifetime
- 1995-10-18 CN CN95195780A patent/CN1099006C/zh not_active Expired - Lifetime
- 1995-10-18 AU AU37095/95A patent/AU694999B2/en not_active Expired
- 1995-10-18 EP EP95934838A patent/EP0783091B1/en not_active Expired - Lifetime
- 1995-10-18 ES ES95934838T patent/ES2217283T3/es not_active Expired - Lifetime
- 1995-10-18 WO PCT/JP1995/002141 patent/WO1996012917A1/ja active IP Right Grant
- 1995-10-18 DE DE69532759T patent/DE69532759T2/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0424460A (ja) * | 1990-05-18 | 1992-01-28 | Fujitsu General Ltd | 空気調和機の集中制御方法 |
JPH04106359A (ja) * | 1990-08-28 | 1992-04-08 | Mitsubishi Heavy Ind Ltd | 空気調和機の遠隔監視システム |
JPH04121547A (ja) * | 1990-09-10 | 1992-04-22 | Mitsubishi Electric Corp | 空気調和機の制御システム |
JPH06241543A (ja) * | 1993-02-17 | 1994-08-30 | Mitsubishi Electric Corp | 空気調和システム |
JPH06319171A (ja) * | 1993-05-07 | 1994-11-15 | Mitsubishi Electric Corp | 伝送制御装置及びその乱数発生システム |
Non-Patent Citations (1)
Title |
---|
See also references of EP0783091A4 * |
Also Published As
Publication number | Publication date |
---|---|
AU3709595A (en) | 1996-05-15 |
ES2217283T3 (es) | 2004-11-01 |
CN1161740A (zh) | 1997-10-08 |
DE69532759D1 (de) | 2004-04-29 |
DE69532759T2 (de) | 2004-08-05 |
AU694999B2 (en) | 1998-08-06 |
CN1099006C (zh) | 2003-01-15 |
EP0783091A4 (en) | 2001-04-04 |
EP0783091B1 (en) | 2004-03-24 |
US5853123A (en) | 1998-12-29 |
EP0783091A1 (en) | 1997-07-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO1996012917A1 (fr) | Dispositif de transmission pour conditionneur d'air | |
CN1910527B (zh) | 分区域供暖、通风与空调系统的正确安装的检验方法 | |
EP1321722B1 (en) | Communication network system and data communication method therefor | |
EP2042815A2 (en) | Outdoor unit and air conditioning system using the same | |
JP2000088321A (ja) | 空気調和装置の伝送装置 | |
JP5056516B2 (ja) | 空気調和機用伝送装置 | |
JP3018929B2 (ja) | 空気調和装置の伝送装置 | |
KR20080038899A (ko) | 시스템 에어컨의 통신에러 진단장치 및 그 방법 | |
JP6914432B2 (ja) | 空気調和システム | |
JP4493123B2 (ja) | 空気調和システム | |
JP2970430B2 (ja) | 空気調和装置の伝送装置 | |
JP7018049B2 (ja) | 環境制御システム、空気調和機または空気調和システム | |
KR100490204B1 (ko) | 다실형 공기조화기의 통신 제어장치 및 그 방법 | |
JP4107876B2 (ja) | 空気調和システム | |
JP3198840B2 (ja) | 空気調和装置の伝送装置 | |
JPH04121547A (ja) | 空気調和機の制御システム | |
JPH0712393A (ja) | 空気調和装置 | |
WO2023210036A1 (ja) | 空気調和機 | |
WO2021152761A1 (ja) | 通信システム、通信システムに用いるマスター機、スレーブ機、および通信方法 | |
JPH10332188A (ja) | 空気調和装置の運転制御装置 | |
JP2560505B2 (ja) | 空気調和機の制御装置 | |
JPH0285633A (ja) | 空気調和装置 | |
JPH0634190A (ja) | 空気調和装置の運転制御装置 | |
TW202342921A (zh) | 空調機 | |
JPH04203740A (ja) | マルチエアコン |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 95195780.5 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AU CN SG US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 08809732 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1995934838 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1995934838 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1995934838 Country of ref document: EP |