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Numéro de publicationUS20050166610 A1
Type de publicationDemande
Numéro de demandeUS 11/095,711
Date de publication4 août 2005
Date de dépôt31 mars 2005
Date de priorité22 nov. 2000
Autre référence de publicationCN1243202C, CN1354347A, DE60121530D1, DE60121530T2, EP1209427A1, EP1209427B1, US6324854, US6560976, US6823680, US7174728, US7412839, US20020059803, US20030051490, US20040206096, US20050000235
Numéro de publication095711, 11095711, US 2005/0166610 A1, US 2005/166610 A1, US 20050166610 A1, US 20050166610A1, US 2005166610 A1, US 2005166610A1, US-A1-20050166610, US-A1-2005166610, US2005/0166610A1, US2005/166610A1, US20050166610 A1, US20050166610A1, US2005166610 A1, US2005166610A1
InventeursNagaraj Jayanth
Cessionnaire d'origineNagaraj Jayanth
Exporter la citationBiBTeX, EndNote, RefMan
Liens externes: USPTO, Cession USPTO, Espacenet
Cooling system diagnostic system apparatus and method
US 20050166610 A1
Résumé
An apparatus and method for diagnosing a cooling system includes a first sensor operable to detect a compressor supply amperage, a second sensor operable to detect a compressor supply voltage, and a third sensor operable to detect a compressor rotational speed. A controller in communication with the first, second and third sensors communicates with a computer that compares at least two of the supply amperage, supply voltage and rotational speed with normal operating parameters, and outputs a diagnosis.
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Revendications(18)
1. A cooling system diagnostic apparatus comprising:
a first sensor operable to detect a compressor supply amperage;
a second sensor operable to detect a compressor supply voltage;
a third sensor operable to detect a compressor rotational speed; and
a computer operable to output a diagnosis based on comparing at least two of said compressor supply amperage, said compressor supply voltage and said compressor rotational speed with normal operating parameters.
2. The cooling system of claim 1, further comprising a controller in communication with said first sensor, said second sensor, and said third sensor, operable to receive a signal from said first sensor, said second sensor, and said third sensor, and operable to communicate said signal to said computer.
3. The cooling system of claim 1, further comprising a fourth sensor operable to detect a low-side pressure.
4. The cooling system of claim 3, further comprising a fifth sensor operable to detect a high-side pressure.
5. The cooling system of claim 4 wherein said computer is operable to output a diagnosis based on comparing said low-side pressure and said high side pressure and at least two of said compressor supply amperage, said compressor supply voltage and said compressor rotational speed, with normal operating parameters.
6. The cooling system of claim 1, further comprising:
a master computer disposed remote from said computer, wherein said computer and said master computer are in communication.
7. The cooling system of claim 6, wherein said computer and said master computer are in communication through the Internet.
8. The cooling system of claim 6, wherein said computer and said master computer are in wireless communication.
9. The cooling system of claim 1, wherein said computer is operable to output repair instructions.
10. The cooling system of claim 1, further comprising a barcode reader in communication with said computer.
11. A method for diagnosing a cooling system comprising:
detecting a compressor supply amperage;
detecting a compressor supply voltage;
detecting a compressor rotational speed; and
comparing at least two of said compressor supply amperage, said compressor supply voltage and said compressor rotational speed with normal operating parameters;
outputting a diagnosis based on said comparing.
12. The method of claim 11, further comprising detecting a low-side pressure.
13. The method of claim 12, further comprising detecting a high-side pressure.
14. The method of claim 13, wherein said comparing includes comparing said high-side pressure and said low-side pressure with normal operating parameters
15. The method of claim 11, further comprising communicating said compressor supply amperage, said compressor supply voltage and said compressor rotational speed to a remote computer
16. The method of claim 15, wherein said communicating includes communicating through the Internet.
17. The method of claim 15, wherein said communicating includes communicating wirelessly.
18. The method of claim 11, further comprising outputting repair instructions.
Description
    CROSS-REFERENCE TO RELATED APPLICATIONS
  • [0001]
    This application is a continuation of U.S. patent application Ser. No. 10/844,607 filed on May 12, 2004, which is a continuation of U.S. patent application Ser. No. 10/280,774 filed on Oct. 25, 2002 (now U.S. Pat. No. 6,823,680), which is a continuation of U.S. patent application Ser. No. 10/012,631 filed on Dec. 7, 2001 (now U.S. Pat. No. 6,560,976), which is a continuation of U.S. patent application Ser. No. 09/721,594 filed on Nov. 22, 2000 (now U.S. Pat. No. 6,324,854), which are incorporated herein by reference.
  • FIELD OF THE INVENTION
  • [0002]
    The present invention relates generally to an apparatus and a method for servicing a cooling system.
  • BACKGROUND AND SUMMARY OF THE INVENTION
  • [0003]
    Several air-conditioning service units are available to assist a trained technician in servicing an air-conditioning system. Some prior art units are adapted to be connected to the high- and low-pressure sides of the air-conditioning system and these units include gauges for measuring the high and low side pressures of the system under the appropriate operating conditions. These measured values are then manually compared with known standards for the particular air-conditioning system being tested. From this manual comparison and other observable characteristics of the system, the technician decides whether or not the system is operating properly. If a system malfunction is indicated, the technician determines the possible causes of the malfunction and decides how the system should be repaired.
  • [0004]
    Expensive and high-end large commercial air-conditioning systems are typically provided with their own sophisticated electronics and a host of internal sensors. The sophisticated electronics and the host of sensors for these large commercial systems simplify the diagnosis for these systems. However, the costs associated with these electronics and the sensors is too much for cost sensitive systems like residential air-conditioning systems and small commercial installations. In these smaller systems, the servicing efficiency is still dependent upon the skill of the technician. The tools that the technician typically uses to help in the diagnosis are pressure gauges, service units which suggest possible fixes, common electronic instruments like multi-meters and component data books which supplement the various service units that are available. Even though these tools have improved over the years in terms of accuracy, ease of use and reliability, the technician still has to rely on his own personal skill and knowledge in interpreting the results of these instruments. The problems associated with depending upon the skill and knowledge of the service technician is expected to compound in the future due in part to the introduction of many new refrigerants. Thus, the large experience that the technicians have gained on current day refrigerants will not be adequate for the air-conditioning systems of the future. This leads to a high cost for training and a higher incident of misdiagnosing which needs to be addressed.
  • [0005]
    During the process of this diagnosis by the technician, he typically relies on his knowledge and his past experience. Thus, accurate diagnosis and repair require that the technician possess substantial experience. The problem of accurate diagnosis is complicated by the large number of different air-conditioning systems in the marketplace. While each air-conditioning system includes a basic air-conditioning cycle, the various systems can include components and options that complicate the diagnosis for the system as a whole. Accordingly, with these prior art service units, misdiagnosis can occur, resulting in improperly repaired systems and in excessive time to complete repairs.
  • [0006]
    Although service manuals are available to assist the technician in diagnosing and repairing the air-conditioning systems, their use is time-consuming and inefficient. In addition, the large number of manuals require valuable space and each manual must be kept up to date.
  • [0007]
    In order to improve over the above described diagnosis procedures, service units have been designed which employ electronic processing means for initially diagnosing the air-conditioning system and, thereafter, if tests or repairs are needed, for guiding the mechanic to correction of its defective operation. When using these prior art service units, the technician identifies what type of system is being diagnosed. The service units are then capable of receiving signals which are indicative of the high and low side pressures of the air-conditioning system. Based upon the observed pressures in relation to the programmed standards for the type of air-conditioning system being tested, the service unit indicates whether or not the system is functioning properly. If the air-conditioning system is not functioning properly, a list of possible defective components and/or other possible causes of the system malfunction are identified. This list could range from a complete self-diagnosis where the problem is clearly identified to interactive dialog that narrows down the possible causes of the problem. The systems that monitor only the high and low pressure side pressures of the air-conditioning system are thus inherently limited in their diagnostic ability. What is needed is an air-conditioning service system which monitors not only the system's pressures, but the system should monitor other conditions such as various temperatures within the system as well as operating parameters of the motor driving the system in order to enable a more accurate diagnosis.
  • [0008]
    The present invention provides the art with a diagnostic system which is applicable to the present day air-conditioning systems as well as being adaptable to the air-conditioning systems of the future. The present invention provides a data acquisition system which includes a judicious integration of sensors. The sensors monitor the system's pressures, various temperatures within the system as well as operating parameters for the motor driving the system. By incorporating these additional sensors and specifically the motor operating sensors, the data acquisition system can provide better diagnostic results for the air-conditioning system. The data acquisition system coupled with a hand held computer using sophisticated software provides a reasonable cost diagnostic tool for a service technician. In the very cost sensitive systems like residential air-conditioning systems, this diagnostic tool eliminates the need for having each system equipped with independent sensors and electronics, yet they will still have the capability to assist the technician to efficiently service the air-conditioning system when there is a problem. The diagnostic tool also includes a wireless Internet link with a master computer which contains the service information on all of the various systems in use. In this way, the hand held computer can be constantly updated with new information as well as not being required to maintain files on every system. If the technician encounters a system not on file in his hand held computer, a wireless Internet link to the master computer can identify the missing information.
  • [0009]
    Other advantages and objects of the present invention will become apparent to those skilled in the art from the subsequent detailed description, appended claims and drawings.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0010]
    In the drawings which illustrate the best mode presently contemplated for carrying out the present invention:
  • [0011]
    FIG. 1 schematically illustrates a typical air-conditioning system in accordance with the present invention;
  • [0012]
    FIG. 2 schematically illustrates an air-conditioning service system in accordance with the present invention; and
  • [0013]
    FIG. 3 schematically illustrates the air-conditioning service system shown in FIG. 2 coupled with the air-conditioning system shown in FIG. 1.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • [0014]
    Referring now to the drawings in which like reference numerals designate like or corresponding parts throughout the several views, there is shown in FIG. 1 an air-conditioning system for use with the service system in accordance with the present invention and which is designated generally by the reference numeral 10. Air-conditioning system 10 comprises a compressor 12 which compresses refrigerant gas and delivers it to a condenser 14 where the compressed gas is converted to a liquid. Condensor 14 discharges through a sight glass 16 which provides visual observation of the fill level of refrigerant in the system during operation. Sight glass 16 also normally includes a reservoir for storing liquid refrigerant under conditions of large load fluctuations on the system, and includes a high-pressure filter and desiccant to trap and hold any moisture or solid particles which may be present in the system. From sight glass 16, the refrigerant is delivered through an expansion valve 18 to an evaporator 20 where the refrigerant is evaporated into gaseous form as the system provides cooling in a well known manner. From evaporator 20, the refrigerant returns to compressor 12 to again start the above described refrigeration cycle.
  • [0015]
    For purposes of initial charging system 10 and for periodic servicing of system 10, compressor 12 has a pair of refrigerant ports 22 and 24. Port 22 is located at or near the low pressure suction port for compressor 12 and port 24 is located at or near the high pressure discharge port for compressor 12. Ports 22 and 24 provide connections for pressure gauge readings and for the addition of refrigerant and/or lubricating oil at either the suction side or the discharge side of compressor 12.
  • [0016]
    Referring now to FIGS. 2 and 3, an air-conditioning service system or apparatus 30 is illustrated. Apparatus 30 comprises a data acquisition system 32, a hand held computer 34, a pair of pressure hoses 36 and 38, and a plurality of sensors 40. Data acquisition system 32 includes a micro-controller 42, a pair of pressure sensors 44 and 46 and an Analog to Digital converter 48. Pressure hose 36 is adapted to be attached to port 22 to monitor the pressure at or near the suction port of compressor 12. Pressure hose 38 is adapted to be attached to port 24 to monitor the pressure at or near the discharge port of compressor 12. Each hose 36 and 38 is in communication with sensors 44 and 46, respectively, and each sensor 44 and 46 provides an analog signal to A/D converter 48 which is indicative of the pressure being monitored. A/D converter 48 receives the analog signal from sensors 44 and 46, converts this analog signal to a digital signal which is indicative of the pressure being monitored and provides this digital system to micro-controller 42.
  • [0017]
    Sensors 40 are adapted to monitor various operating characteristics of compressor 12. Several sensors 40 monitor specific temperatures in the system, one sensor monitors compressor supply voltage, one sensor monitors compressor supply amperage and one sensor monitors the rotational speed (RPM) for compressor 12. Typical temperatures that can be monitored include evaporator refrigerant temperature, condenser refrigerant temperature, ambient temperature and conditioned space temperature. The analysis of parameters like compressor voltage, compressor current, compressor RPM and discharge temperature can provide valuable information regarding the cause of the problem. Each sensor 40 is connected to A/D converter 48 and sends an analog signal indicative of its sensed parameter to A/D converter 48. A/D converter 48 receives the analog signals from sensors 40 and converts them to a digital signal indicative of the sensed parameter and provides this digital signal to micro-controller 42.
  • [0018]
    Micro-controller 42 is in communication with computer 34 and provides to computer 34 the information provided by micro-controller 42. Once computer 34 is provided with the air-conditioning system configuration and the sensed parameters from sensors 40, 44 and 46, a diagnostic program can be performed. The air-conditioning system configuration can be provided to computer 34 manually by the technician or it can be provided to computer 34 by a bar code reader 50 if the air-conditioning system is provided with a bar code label which sufficiently identifies the air-conditioning system.
  • [0019]
    In order for the diagnostic program to run, computer 34 must know what the normal parameters for the monitored air conditioning system should be. This information can be kept in the memory of computer 34, it can be kept in the larger memory of a master computer 52 or it can be kept in both places. Master computer 52 can be continuously updated with new models and revised information as it becomes available. When accessing the normal parameters in its own memory, computer 34 can immediately use the saved normal parameters or computer 34 can request the technician to connect to master computer 52 to confirm and/or update the normal parameters. The connection to the master computer 52 is preferably accomplished through a wireless Internet connection 54 in order to simplify the procedure for the technician. Also, if the particular air conditioning system being monitored is not in the memory of computer 34, computer 34 can prompt the technician to connect to master computer 52 using wireless Internet connection 54 to access the larger database which is available in the memory of master computer 52. In this way, computer 34 can include only the most popular systems in its memory but still have access to the entire population or air-conditioning systems through connection 54. While the present invention is being illustrated utilizing wireless Internet connection 54, it is within the scope of the present invention to communicate between computers 34 and 52 using a direct wireless or a wire connection if desired.
  • [0020]
    The technician using apparatus 30 would first hook up pressure hose 36 to port 22 and pressure hose 38 to port 24. The technician would then hook up the various temperature sensors 40, the compressor supply voltage and current sensors 40 and the compressor RPM sensor 40. The technician would then initialize computer 34 and launch the diagnostics application software. The software on start-up prompts the technician to set up the test session. The technician then picks various options such as refrigerant type of the system and the system configuration, like compressors and system model number, expansion device type or other information for the configuration system. Optionally this information can be input into computer 34 using a barcode label and barcode reader 50 if this option is available. The software then checks to see if the operating information for the system or the compressor model exists within its memory. If this information is not within its memory, computer 34 will establish a wireless connection to master computer 52 through wireless Internet connection 54 and access this information from master computer 52. Also, optionally, computer 34 can prompt the technician to update the existing information in its memory with the information contained in the memory of master computer 52 or computer 34 can prompt the technician to add the missing information to its memory from the memory of master computer 52.
  • [0021]
    Once the test session is set up, the software commands micro-controller 42 to acquire the sensed values from sensors 40, 44 and 46. Micro-controller 42 has its own custom software that verifies the integrity of the values reported by sensors 40, 44 and 46. An example would be that micro-controller 42 has the ability to detect a failed sensor. The sensors values acquired by micro-controller 42 through A/D converter 48 are reported back to computer 34. This cycle of sensor data is acquired continuously throughout the test session. The reported sensed data is then used to calculate a variety of system operating parameters. For example, superheat, supercooling, condensing temperature, evaporating temperature, and other operating parameters can be determined. The software within computer 34 then compares these values individually or in combination with the diagnostics rules programmed and then based upon these comparisons, the software derives a set of possible causes to the differences between the measured values and the standard operating values. The diagnostic rules can range from simple limits to fuzzy logic to trend analysis. The diagnostic rules can also range from individual values to a combination of values.
  • [0022]
    For example, the current drawn by compressor 12 is related to the suction and discharge pressures and is unique to each compressor model. Also, the superheat settings are unique to each air-conditioning system. Further, the diagnostic rules are different for different system configurations like refrigerant type, expansion device type, compressor type, unloading scheme, condensor cooling scheme and the like. In some situations, the application of the diagnostic rules may lead to the requirement of one or more additional parameters. For example, the diagnostic system may require the indoor temperature which may not be currently sensed. In this case, the technician will be prompted to acquire this valve by other means and to input its value into the program. When the criteria for a diagnostic rule have been satisfied, then a cause or causes of the problem is displayed to the technician together with solutions to eliminate the problem. For example, a high superheat condition in combination with several other conditions suggests a low refrigerant charge and the solution would be to add refrigerant to the system. The technician can then carry out the suggested repairs and then rerun the test. When the system is again functioning normally, the test results and the sensed values can be saved for future reference.
  • [0023]
    While sensors 40 are disclosed as being hard wired to A/D converter 48, it is within the scope of the present invention to utilize wireless devices to reduce the number of wiring hookups that need to be made.
  • [0024]
    Also, while apparatus 30 is being disclosed as a diagnostic tool, it is within the scope of the present invention to include an automatic refrigerant charging capability through hoses 36 and 38 if desired. This would involve the addition of a control loop to meter refrigerant into the system from a charging cylinder. Accurate charging would be accomplished by continuously monitoring the system parameters during the charging process.
  • [0025]
    While the above detailed description describes the preferred embodiment of the present invention, it should be understood that the present invention is susceptible to modification, variation and alteration without deviating from the scope and fair meaning of the subjoined claims.
Citations de brevets
Brevet cité Date de dépôt Date de publication Déposant Titre
US3232519 *7 mai 19631 févr. 1966Vilter Manufacturing CorpCompressor protection system
US4470092 *27 sept. 19824 sept. 1984Allen-Bradley CompanyProgrammable motor protector
US4497031 *26 juil. 198229 janv. 1985Johnson Service CompanyDirect digital control apparatus for automated monitoring and control of building systems
US4520674 *14 nov. 19834 juin 1985Technology For Energy CorporationVibration monitoring device
US4630670 *17 juin 198523 déc. 1986Carrier CorporationVariable volume multizone system
US4755957 *27 mars 19865 juil. 1988K-White Tools, IncorporatedAutomotive air-conditioning servicing system and method
US4798055 *28 oct. 198717 janv. 1989Kent-Moore CorporationRefrigeration system analyzer
US4831560 *26 août 198716 mai 1989Zaleski James VMethod for testing auto electronics systems
US4881184 *8 sept. 198714 nov. 1989Datac, Inc.Turbine monitoring apparatus
US4885707 *19 févr. 19875 déc. 1989Dli CorporationVibration data collecting and processing apparatus and method
US4885914 *14 févr. 198912 déc. 1989Honeywell Inc.Coefficient of performance deviation meter for vapor compression type refrigeration systems
US4964060 *4 déc. 198516 oct. 1990Hartsog Charles HComputer aided building plan review system and process
US4985857 *19 août 198815 janv. 1991General Motors CorporationMethod and apparatus for diagnosing machines
US5058388 *27 août 199022 oct. 1991Allan ShawMethod and means of air conditioning
US5071065 *11 janv. 199010 déc. 1991Halton OyProcedure for controlling and maintaining air currents or equivalent in an air-conditioning installation, and an air-conditioning system according to said procedure
US5073862 *31 oct. 198917 déc. 1991Carlson Peter JMethod and apparatus for diagnosing problems with the thermodynamic performance of a heat engine
US5115406 *5 oct. 199019 mai 1992Gateshead Manufacturing CorporationRotating machinery diagnostic system
US5179214 *23 sept. 199112 janv. 1993Texaco Chemical CompanyProcess for manufacturing alkylene carbonates
US5209076 *5 juin 199211 mai 1993Izon, Inc.Control system for preventing compressor damage in a refrigeration system
US5209400 *7 mars 199111 mai 1993John M. WinslowPortable calculator for refrigeration heating and air conditioning equipment service
US5279458 *12 août 199118 janv. 1994Carrier CorporationNetwork management control
US5299504 *30 juin 19925 avr. 1994Technical Rail Products, IncorporatedSelf-propelled rail heater car with movable induction heating coils
US5303560 *15 avr. 199319 avr. 1994Thermo King CorporationMethod and apparatus for monitoring and controlling the operation of a refrigeration unit
US5311451 *6 déc. 199110 mai 1994M. T. Mcbrian Company, Inc.Reconfigurable controller for monitoring and controlling environmental conditions
US5335507 *12 nov. 19939 août 1994Ecoair CorporatedControl system for an air conditioning/refrigeration system
US5416781 *17 mars 199216 mai 1995Johnson Service CompanyIntegrated services digital network based facility management system
US5440890 *10 déc. 199315 août 1995Copeland CorporationBlocked fan detection system for heat pump
US5440895 *24 janv. 199415 août 1995Copeland CorporationHeat pump motor optimization and sensor fault detection
US5446677 *28 avr. 199429 août 1995Johnson Service CompanyDiagnostic system for use in an environment control network
US5454229 *18 mai 19943 oct. 1995Thermo King CorporationRefrigeration unit control with shutdown evaluation and automatic restart
US5460006 *16 nov. 199324 oct. 1995Hoshizaki Denki Kabushiki KaishaMonitoring system for food storage device
US5481481 *23 nov. 19922 janv. 1996Architectural Engergy CorporationAutomated diagnostic system having temporally coordinated wireless sensors
US5499512 *14 avr. 199519 mars 1996Thermo King CorporationMethods and apparatus for converting a manually operable refrigeration unit to remote operation
US5511387 *17 janv. 199530 avr. 1996Copeland CorporationRefrigerant recovery system
US5528908 *6 juin 199525 juin 1996Copeland CorporationBlocked fan detection system for heat pump
US5548966 *7 juin 199527 août 1996Copeland CorporationRefrigerant recovery system
US5596507 *15 août 199421 janv. 1997Jones; Jeffrey K.Method and apparatus for predictive maintenance of HVACR systems
US5630325 *1 juin 199520 mai 1997Copeland CorporationHeat pump motor optimization and sensor fault detection
US5875638 *23 mars 19952 mars 1999Copeland CorporationRefrigerant recovery system
US5924295 *7 oct. 199720 juil. 1999Samsung Electronics Co., Ltd.Method and apparatus for controlling initial operation of refrigerator
US5956658 *8 juil. 199721 sept. 1999Diagnostic Instruments LimitedPortable data collection apparatus for collecting maintenance data from a field tour
US6081750 *6 juin 199527 juin 2000Hoffberg; Steven MarkErgonomic man-machine interface incorporating adaptive pattern recognition based control system
US6179214 *21 juil. 199930 janv. 2001Carrier CorporationPortable plug-in control module for use with the service modules of HVAC systems
US6279332 *14 juin 200028 août 2001Samsung Electronics Co., Ltd.Performance testing method of air conditioner
US6502409 *3 mai 20007 janv. 2003Computer Process Controls, Inc.Wireless method and apparatus for monitoring and controlling food temperature
US20010025349 *8 janv. 200127 sept. 2001Sharood John N.Retrofit monitoring device
Référencé par
Brevet citant Date de dépôt Date de publication Déposant Titre
US78780064 avr. 20051 févr. 2011Emerson Climate Technologies, Inc.Compressor diagnostic and protection system and method
US79050984 avr. 200515 mars 2011Emerson Climate Technologies, Inc.Compressor diagnostic and protection system and method
US816082730 oct. 200817 avr. 2012Emerson Climate Technologies, Inc.Compressor sensor module
US823906621 oct. 20097 août 2012Lennox Industries Inc.System and method of use for a user interface dashboard of a heating, ventilation and air conditioning network
US825508621 oct. 200928 août 2012Lennox Industries Inc.System recovery in a heating, ventilation and air conditioning network
US826044417 févr. 20104 sept. 2012Lennox Industries Inc.Auxiliary controller of a HVAC system
US829598121 oct. 200923 oct. 2012Lennox Industries Inc.Device commissioning in a heating, ventilation and air conditioning network
US83356575 juil. 201118 déc. 2012Emerson Climate Technologies, Inc.Compressor sensor module
US835208021 oct. 20098 janv. 2013Lennox Industries Inc.Communication protocol system and method for a distributed-architecture heating, ventilation and air conditioning network
US835208121 oct. 20098 janv. 2013Lennox Industries Inc.Communication protocol system and method for a distributed-architecture heating, ventilation and air conditioning network
US839316924 mars 200812 mars 2013Emerson Climate Technologies, Inc.Refrigeration monitoring system and method
US843344621 oct. 200930 avr. 2013Lennox Industries, Inc.Alarm and diagnostics system and method for a distributed-architecture heating, ventilation and air conditioning network
US843787721 oct. 20097 mai 2013Lennox Industries Inc.System recovery in a heating, ventilation and air conditioning network
US843787821 oct. 20097 mai 2013Lennox Industries Inc.Alarm and diagnostics system and method for a distributed architecture heating, ventilation and air conditioning network
US844269321 oct. 200914 mai 2013Lennox Industries, Inc.System and method of use for a user interface dashboard of a heating, ventilation and air conditioning network
US845245621 oct. 200928 mai 2013Lennox Industries Inc.System and method of use for a user interface dashboard of a heating, ventilation and air conditioning network
US845290621 oct. 200928 mai 2013Lennox Industries, Inc.Communication protocol system and method for a distributed-architecture heating, ventilation and air conditioning network
US846344221 oct. 200911 juin 2013Lennox Industries, Inc.Alarm and diagnostics system and method for a distributed architecture heating, ventilation and air conditioning network
US846344321 oct. 200911 juin 2013Lennox Industries, Inc.Memory recovery scheme and data structure in a heating, ventilation and air conditioning network
US847427818 févr. 20112 juil. 2013Emerson Climate Technologies, Inc.Compressor diagnostic and protection system and method
US854324321 oct. 200924 sept. 2013Lennox Industries, Inc.System and method of use for a user interface dashboard of a heating, ventilation and air conditioning network
US854863021 oct. 20091 oct. 2013Lennox Industries, Inc.Alarm and diagnostics system and method for a distributed-architecture heating, ventilation and air conditioning network
US856012521 oct. 200915 oct. 2013Lennox IndustriesCommunication protocol system and method for a distributed-architecture heating, ventilation and air conditioning network
US856440021 oct. 200922 oct. 2013Lennox Industries, Inc.Communication protocol system and method for a distributed-architecture heating, ventilation and air conditioning network
US859032512 juil. 200726 nov. 2013Emerson Climate Technologies, Inc.Protection and diagnostic module for a refrigeration system
US860055821 oct. 20093 déc. 2013Lennox Industries Inc.System recovery in a heating, ventilation and air conditioning network
US860055921 oct. 20093 déc. 2013Lennox Industries Inc.Method of controlling equipment in a heating, ventilation and air conditioning network
US861532621 oct. 200924 déc. 2013Lennox Industries Inc.System and method of use for a user interface dashboard of a heating, ventilation and air conditioning network
US865549021 oct. 200918 févr. 2014Lennox Industries, Inc.System and method of use for a user interface dashboard of a heating, ventilation and air conditioning network
US865549121 oct. 200918 févr. 2014Lennox Industries Inc.Alarm and diagnostics system and method for a distributed architecture heating, ventilation and air conditioning network
US866116521 oct. 200925 févr. 2014Lennox Industries, Inc.Device abstraction system and method for a distributed architecture heating, ventilation and air conditioning system
US869416421 oct. 20098 avr. 2014Lennox Industries, Inc.Interactive user guidance interface for a heating, ventilation and air conditioning system
US872529821 oct. 200913 mai 2014Lennox Industries, Inc.Alarm and diagnostics system and method for a distributed architecture heating, ventilation and conditioning network
US874462921 oct. 20093 juin 2014Lennox Industries Inc.System and method of use for a user interface dashboard of a heating, ventilation and air conditioning network
US876194530 août 201224 juin 2014Lennox Industries Inc.Device commissioning in a heating, ventilation and air conditioning network
US876266621 oct. 200924 juin 2014Lennox Industries, Inc.Backup and restoration of operation control data in a heating, ventilation and air conditioning network
US877421021 oct. 20098 juil. 2014Lennox Industries, Inc.Communication protocol system and method for a distributed-architecture heating, ventilation and air conditioning network
US878810021 oct. 200922 juil. 2014Lennox Industries Inc.System and method for zoning a distributed-architecture heating, ventilation and air conditioning network
US878810430 juil. 201222 juil. 2014Lennox Industries Inc.Heating, ventilating and air conditioning (HVAC) system with an auxiliary controller
US879879621 oct. 20095 août 2014Lennox Industries Inc.General control techniques in a heating, ventilation and air conditioning network
US880298121 oct. 200912 août 2014Lennox Industries Inc.Flush wall mount thermostat and in-set mounting plate for a heating, ventilation and air conditioning system
US885582521 oct. 20097 oct. 2014Lennox Industries Inc.Device abstraction system and method for a distributed-architecture heating, ventilation and air conditioning system
US887481521 oct. 200928 oct. 2014Lennox Industries, Inc.Communication protocol system and method for a distributed architecture heating, ventilation and air conditioning network
US889279721 oct. 200918 nov. 2014Lennox Industries Inc.Communication protocol system and method for a distributed-architecture heating, ventilation and air conditioning network
US89643389 janv. 201324 févr. 2015Emerson Climate Technologies, Inc.System and method for compressor motor protection
US897457315 mars 201310 mars 2015Emerson Climate Technologies, Inc.Method and apparatus for monitoring a refrigeration-cycle system
US897779421 oct. 200910 mars 2015Lennox Industries, Inc.Communication protocol system and method for a distributed-architecture heating, ventilation and air conditioning network
US899453921 oct. 200931 mars 2015Lennox Industries, Inc.Alarm and diagnostics system and method for a distributed-architecture heating, ventilation and air conditioning network
US901746115 mars 201328 avr. 2015Emerson Climate Technologies, Inc.Method and apparatus for monitoring a refrigeration-cycle system
US902181915 mars 20135 mai 2015Emerson Climate Technologies, Inc.Method and apparatus for monitoring a refrigeration-cycle system
US902313615 mars 20135 mai 2015Emerson Climate Technologies, Inc.Method and apparatus for monitoring a refrigeration-cycle system
US904690014 févr. 20132 juin 2015Emerson Climate Technologies, Inc.Method and apparatus for monitoring refrigeration-cycle systems
US908139415 mars 201314 juil. 2015Emerson Climate Technologies, Inc.Method and apparatus for monitoring a refrigeration-cycle system
US908670415 mars 201321 juil. 2015Emerson Climate Technologies, Inc.Method and apparatus for monitoring a refrigeration-cycle system
US91214071 juil. 20131 sept. 2015Emerson Climate Technologies, Inc.Compressor diagnostic and protection system and method
US914072830 oct. 200822 sept. 2015Emerson Climate Technologies, Inc.Compressor sensor module
US915215521 oct. 20096 oct. 2015Lennox Industries Inc.Device abstraction system and method for a distributed-architecture heating, ventilation and air conditioning system
US919489419 févr. 201324 nov. 2015Emerson Climate Technologies, Inc.Compressor sensor module
US926188821 oct. 200916 févr. 2016Lennox Industries Inc.System and method of use for a user interface dashboard of a heating, ventilation and air conditioning network
US926834521 oct. 200923 févr. 2016Lennox Industries Inc.System and method of use for a user interface dashboard of a heating, ventilation and air conditioning network
US928580228 févr. 201215 mars 2016Emerson Electric Co.Residential solutions HVAC monitoring and diagnosis
US93045217 oct. 20115 avr. 2016Emerson Climate Technologies, Inc.Air filter monitoring system
US93100948 févr. 201212 avr. 2016Emerson Climate Technologies, Inc.Portable method and apparatus for monitoring refrigerant-cycle systems
US931043923 sept. 201312 avr. 2016Emerson Climate Technologies, Inc.Compressor having a control and diagnostic module
US932551721 oct. 200926 avr. 2016Lennox Industries Inc.Device abstraction system and method for a distributed-architecture heating, ventilation and air conditioning system
US937776821 oct. 200928 juin 2016Lennox Industries Inc.Memory recovery scheme and data structure in a heating, ventilation and air conditioning network
US943220821 oct. 200930 août 2016Lennox Industries Inc.Device abstraction system and method for a distributed architecture heating, ventilation and air conditioning system
US948017728 juin 201325 oct. 2016Emerson Climate Technologies, Inc.Compressor protection module
US955150413 mars 201424 janv. 2017Emerson Electric Co.HVAC system remote monitoring and diagnosis
US957478413 juin 201421 févr. 2017Lennox Industries Inc.Method of starting a HVAC system having an auxiliary controller
US95904139 févr. 20157 mars 2017Emerson Climate Technologies, Inc.System and method for compressor motor protection
US959935913 juin 201421 mars 2017Lennox Industries Inc.Integrated controller an HVAC system
US963249021 oct. 200925 avr. 2017Lennox Industries Inc.System and method for zoning a distributed architecture heating, ventilation and air conditioning network
US963843614 mars 20142 mai 2017Emerson Electric Co.HVAC system remote monitoring and diagnosis
US96512865 mars 201316 mai 2017Emerson Climate Technologies, Inc.Refrigeration monitoring system and method
US965192521 oct. 200916 mai 2017Lennox Industries Inc.System and method for zoning a distributed-architecture heating, ventilation and air conditioning network
US966949831 août 20156 juin 2017Emerson Climate Technologies, Inc.Compressor diagnostic and protection system and method
US967848621 oct. 200913 juin 2017Lennox Industries Inc.Device abstraction system and method for a distributed-architecture heating, ventilation and air conditioning system
US96903071 juin 201527 juin 2017Emerson Climate Technologies, Inc.Method and apparatus for monitoring refrigeration-cycle systems
US970328710 juin 201411 juil. 2017Emerson Electric Co.Remote HVAC monitoring and diagnosis
US976216811 avr. 201612 sept. 2017Emerson Climate Technologies, Inc.Compressor having a control and diagnostic module
US97659794 avr. 201419 sept. 2017Emerson Climate Technologies, Inc.Heat-pump system with refrigerant charge diagnostics
US20080066474 *10 avr. 200720 mars 2008Michael Ramey PorterRefrigeration system energy efficiency enhancement using microsystems
US20080077260 *10 avr. 200727 mars 2008Michael Ramey PorterRefrigeration system fault detection and diagnosis using distributed microsystems
US20080216494 *6 sept. 200711 sept. 2008Pham Hung MCompressor data module
USD64864121 oct. 200915 nov. 2011Lennox Industries Inc.Thin cover plate for an electronic system controller
USD64864221 oct. 200915 nov. 2011Lennox Industries Inc.Thin cover plate for an electronic system controller
WO2008030572A1 *7 sept. 200713 mars 2008Emerson Climate Technologies, Inc.Compressor data module
Classifications
Classification aux États-Unis62/127, 62/230
Classification internationaleF24F1/00, F24F11/00, F25B49/00
Classification coopérativeF25B49/005, F25B2500/06, F24F11/0086, F24F2011/0043, F24F2011/0091
Classification européenneF24F11/00R9, F25B49/00F
Événements juridiques
DateCodeÉvénementDescription
26 avr. 2007ASAssignment
Owner name: EMERSON CLIMATE TECHNOLOGIES, INC., OHIO
Free format text: CERTIFICATE OF CONVERSION, ARTICLES OF FORMATION AND ASSIGNMENT;ASSIGNOR:COPELAND CORPORATION;REEL/FRAME:019215/0273
Effective date: 20060927
Owner name: EMERSON CLIMATE TECHNOLOGIES, INC.,OHIO
Free format text: CERTIFICATE OF CONVERSION, ARTICLES OF FORMATION AND ASSIGNMENT;ASSIGNOR:COPELAND CORPORATION;REEL/FRAME:019215/0273
Effective date: 20060927