WO2011097830A1

WO2011097830A1 - Beverage infusing and boiling mechanism and thermostat thereof

Info

Publication number: WO2011097830A1
Application number: PCT/CN2010/070689
Authority: WO
Inventors: 刘宗熹
Original assignee: Liu Tsung-Hsi
Priority date: 2010-02-12
Filing date: 2010-02-12
Publication date: 2011-08-18

Abstract

A beverage infusing and boiling mechanism and a thermostat thereof are provided, wherein the beverage infusing and boiling mechanism uses a boiler (10) to preheat the storage water to the hot water with high temperature value whose temperature is higher than the beverage infusing and boiling temperature, and feeds respectively the hot water with high temperature value and the outside cold water whose flux is automatically adjusted by a thermostat into a blending tank (20) and blends them to be a uniform temperature stream whose temperature is the same as the beverage infusing and boiling temperature and which keeps the uniform temperature state, and uniformly sprays the uniform temperature stream to infuse and boil the beverage through an outlet sprayer (35) with atomization. The beverage infusing and boiling mechanism can effectively improve the beverage infusing and boiling quality, and can infuse and boil different kinds of beverage by changing the temperature value of the uniform temperature stream via the thermostat.

Description

Beverage brewing mechanism and its automatic temperature regulating device

The invention relates to a beverage brewing mechanism and an automatic temperature regulating device thereof, belonging to the field of machinery, in particular to an automatic temperature regulating beverage brewing mechanism and an automatic temperature regulating device thereof for preparing different kinds of beverages.

Say

Background technique

Beverage brewing mechanisms are used to prepare coffee, tea or other beverages. The existing beverage brewing mechanism shown in FIG. 12 mainly uses a water supply pump 80 to supply an external water source to a boiler 81. The boiler 81 is provided with a heater 82 and a temperature detector 83 for The water stored in the boiler 81 is heated to a set temperature range of the book; when the beverage extraction process is performed, the user operates to control the brewing solenoid valve 84 to open, so that the hot water in the boiler 81 passes through an outlet pipe 85 and A sprinkling head 86 is sprinkled into a beverage filter cartridge 87 preset with a beverage material, and the leached beverage finally flows into a storage tank 88 for storage.

The above-mentioned existing beverage brewing mechanism directly supplies the hot water in the boiler 81 to the sprinkler head 86. When the hot water is continuously used, the hot water temperature decreases with the brewing time, and the temperature detector 83 detects the inside of the boiler 81. When the water temperature is lower than the set value, the heater 82 is further heated; therefore, during the continuous water discharge process of the beverage brewing process, the hot water temperature exhibits a decreasing curve which is sharply increased and then decreased, and cannot be maintained at the temperature uniformity. The state, which will affect the brewing quality of the beverage, makes it difficult to brew the best flavored beverage product, which is the biggest technical problem of the existing beverage brewing mechanism.

The existing beverage brewing institutions still have the following technical problems to be solved:

1. Because the hot water outlet temperature is only in a narrow temperature range, and the optimal brewing temperature of different types of beverages is not the same, the existing beverage brewing mechanism is generally only for brewing a single type of beverage. It is extremely inconvenient for users who have the need to brew different types of beverages (such as black tea and green tea).

2. In order to match the brewing temperature of the beverage, the heating temperature range of the water stored in the boiler 81 is small, and can only be slightly higher than the brewing temperature of the beverage; when the water is continuously discharged, the storage temperature is often lower than the brewing temperature. At this time, it is necessary to wait for the heater 82 to heat the stored water to a temperature slightly higher than the brewing temperature, so as to restore the beverage brewing procedure, resulting in poor work efficiency of the existing beverage brewing mechanism;

3. When brewing, the hot water is sprinkled by the water outlet of the sprinkler head 86, so that the beverage material placed in the beverage filter cartridge 87 is difficult to uniformly contact with the hot water, resulting in the flushing of the beverage. The quality of the cooking is deteriorated due to uneven water; as well as

4. When brewing, the amount of water is calculated based on the water discharge time. It is difficult to accurately calculate the volume of the beverage after brewing, and the brewing quality of the beverage is relatively affected by the fact that the volume of the beverage is not fixed. Summary of the invention

It is an object of the present invention to provide a beverage brewing mechanism which, in carrying out a beverage brewing process, premixes hot water and cold water having a water temperature higher than a brewing temperature into a uniform temperature supply water having a set temperature value, and The water supply brews the beverage at a uniform temperature, and can effectively improve the brewing quality of the beverage, and is used to brew the beverage product with the best flavor.

Another object of the present invention is to provide a beverage brewing mechanism comprising an automatic temperature regulating device capable of automatically adjusting the flow rate of cold water according to the water temperature so that the temperature of the equal-temperature supply water is maintained at a constant temperature of the optimum brewing temperature.

Another object of the present invention is to provide a beverage brewing mechanism that can be used by a user to change and automatically adjust the flow of cold water after the user sets the water temperature to brew different types of beverages.

Another object of the present invention is to provide a beverage brewing mechanism that can preheat the stored water to a high calorific value storage water well above the brewing temperature of the beverage using a low power heater, which is then mixed with cold water. The water is supplied to the water at an appropriate temperature for proper brewing temperature, and more hot water is provided in a smaller boiler volume to improve the overall working efficiency of the beverage brewing mechanism.

Another object of the present invention is to provide a beverage brewing mechanism, further comprising a water sprayer, which uniformly sprays the temperature-equal supply water stream in an atomized manner, so that the beverage material is uniformly contacted with the hot water, thereby effectively improving the beverage. The quality of brewing.

Another object of the present invention is to provide a beverage brewing mechanism, which further comprises a water flow meter, which can not only accurately control the volume of the beverage after completion of brewing, but also relatively improve the brewing quality of the beverage.

Another object of the present invention is to provide a beverage brewing mechanism, wherein the boiler is provided with at least two heaters respectively located at a high position and a low position and a temperature detector thereof, which can simultaneously or separately heat the water stored in the boiler. , to improve the uniform temperature effect of water storage in the boiler.

The beverage brewing mechanism capable of achieving the above object includes: a boiler for receiving and storing an external water source; at least one heater for heating the water stored in the boiler; at least one temperature detector for The water storage temperature in the boiler is controlled to control the opening and closing of the heater, so that the water storage in the boiler is maintained within a set temperature range; a hot water delivery pipe for conveying water in the boiler; a cold water conveying pipe for conveying cold water outside; an adjusting device for adjusting a flow rate of cold water in the cold water conveying pipe; a mixing tank body capable of receiving cold water and hot water respectively delivered by the cold water conveying pipe and the hot water conveying pipe, and The cold water and the hot water are mixed into a proper temperature uniform temperature water flow; an outlet pipe connected to the mixing tank body and capable of receiving the temperature equalization water flow; and an outlet water control valve disposed on the water outlet pipe, when the water outlet control valve is opened The soaking water flow flows out through the outlet pipe for the beverage brewing process. In a preferred embodiment, the mixing tank body comprises: a body; a mixing chamber formed inside the body; a first inlet pipe connected to the hot water conveying pipe for the hot water Guided into the mixing chamber; a second inlet pipe connected to the cold water delivery pipe for guiding the cold water into the mixing chamber; and an outlet pipe connected to the outlet pipe for being placed in the mixing chamber The mixed warm water flow I guides into the outlet pipe.

In a preferred embodiment, the beverage brewing mechanism further includes a hot water restrictor for adjusting the hot water flow rate of the hot water delivery pipe.

In a preferred embodiment, the beverage brewing mechanism further includes: a drain pipe that can receive the warm water flow; a drain restrictor disposed on the drain pipe; and a drain pipe disposed on the drain pipe The drain control valve, when it is opened, the uniform warm water flow is discharged to the outside through the drain pipe at a set flow rate.

In a preferred embodiment, the beverage brewing mechanism further includes a water flow meter disposed on the water outlet pipe and behind the water outlet control valve for calculating an actual flow rate of the uniform temperature water flow through the water outlet control valve. When the outlet flow meter calculates a set flow value, the control causes the outlet control valve to close.

In a preferred embodiment, the beverage brewing mechanism further includes a water sprayer disposed at an outlet end of the water outlet pipe, the sprayed water stream being uniformly sprayed in an atomized manner.

In a preferred embodiment, the boiler is provided with a low level heater and a high level heater for at least two heaters for heating the water in different areas of the boiler.

In a preferred embodiment, at least two temperature detectors are respectively disposed in the boiler corresponding to the position of the heater, and a low temperature detector and a high temperature detector are respectively used to detect different conditions in the boiler. The water storage temperature of the area is controlled to control the opening and closing of the heater correspondingly, so that the water storage in different areas of the boiler is maintained within a set temperature range.

In a preferred embodiment, the beverage brewing mechanism further includes a water supply pump provided with a water supply pipe supplying an external water source to the boiler, and a water supply manifold supplying an external water source to the cold water delivery pipe.

In a preferred embodiment, the water supply pipe extends into a bottom portion of the boiler below the heater, and the water supply pipe is provided with a plurality of water supply holes arranged in a radiation shape to make the external water source uniform in radiation. Flow into the boiler.

The beverage brewing mechanism further includes an automatic temperature regulating device, the automatic temperature regulating device comprising: at least one temperature detector for detecting an actual temperature value of the water flow; and a control processing unit, after receiving the actual temperature value, Comparing a set temperature value, if there is a difference, performing an operation according to the difference value of the two, and outputting an operation specific control signal; and an adjusting device including a driving motor, a transmission member, and a throttle a valve, the drive motor rotates a specific angle after receiving the specific control signal, and drives the throttle valve to change its valve opening degree through the transmission member to adjust the flow rate of water flowing through the throttle valve.

In a preferred embodiment, the temperature detector is configured to detect an actual temperature value of the effluent water flow of the beverage brewing mechanism. In a preferred embodiment, the transmission member is a coupling that permits relative displacement movement, and includes a drive end block connecting the drive motor and a driven end block connecting the throttle valve. The driving and the driven end piece respectively have a plurality of axially protruding driving prongs and a driven prong, and are configured such that the driving prongs interlock with each other in a space between the driven prongs, There is an axial gap between each pair of drive and driven prongs that permits relative axial movement of the drive and driven end pieces.

In a preferred embodiment, the throttle valve includes a valve body and a valve stem that are meshed with each other by a thread; the valve body is internally provided with a water inlet, a water passage and a water outlet which are connected to each other. One end of the valve stem is connected to the transmission member, and is driven by the driving motor to rotate and axially displace relative to the valve body; the other end of the valve stem has a portion of the needle extending into the throttle channel The valve, by the axial displacement movement of the needle valve, changes the opening degree of the throttle channel to adjust the flow of cold water outputted by the water outlet.

In a preferred embodiment, the thermostat apparatus further includes an upper limit micro switch and a lower limit micro switch for limiting the axial displacement stroke of the valve stem, and any micro switch can be immediately contacted. Turn off the drive motor.

In a preferred embodiment, a spring-type leakage preventing member is further disposed between the valve body and the valve stem, and includes: at least one O-ring sandwiched between the valve body and the valve stem; An annular washer and a compression spring disposed above the O-ring; and a holed nut screwed onto the valve body in a threaded engagement manner, and a hole for allowing the valve stem to pass freely; A hole nut is pressed against the compression spring, and a lower pressing force is applied to the O-ring to press the O-ring to prevent water from leaking from between the valve body and the valve stem.

In a preferred embodiment, at least one O-ring for leak prevention and at least one thrust bearing are interposed between the valve body and the valve stem.

In a preferred embodiment, the transmission member is a transmission gear set that allows relative displacement movement, and includes a driving rack that connects the driving motor, and a driven gear that connects the throttle valve; the driving rack The length is greater than the height of the driven gear to allow for relative axial displacement between the two.

The beverage brewing mechanism provided by the present invention has the following advantages when compared with the aforementioned conventional brewing and brewing mechanism:

1. The hot water and the cold water whose water temperature is higher than the brewing temperature are mixed in advance to form a uniform temperature water flow with a set temperature value, and then the beverage is brewed by the uniform temperature water flow, thereby effectively improving the brewing quality of the beverage;

2. The cold water flow automatic adjusting device can supply cold water of different flow rates per unit time, and mix with the fixed flow of hot water to supply water of different temperatures for brewing different kinds of beverages;

3. Detecting the water temperature and temperature, automatically correcting and adjusting the cold water flow by detecting the temperature difference, so that the beverage brewing temperature is more stable, and the beverage brewing quality is more stable; 4. The water sprayer uniformly sprays the uniform temperature water flow in an atomizing manner, so that the beverage material is uniformly contacted with the hot water, thereby effectively improving the brewing quality of the beverage;

5. The water flow meter can not only accurately control the volume of the beverage after the brewing, but also relatively improve the brewing quality of the beverage;

6. The boiler is provided with at least two heaters located at the high and low positions and their temperature detectors, which can simultaneously or separately heat the water stored in the boiler to improve the uniform temperature effect of the water stored in the boiler. DRAWINGS

Figure 1 is a perspective view of the beverage brewing mechanism of the present invention;

Figure 2 is a plan view of Figure 1;

Figure 3 is a partial cross-sectional enlarged view of the mixing tank body in the beverage brewing mechanism;

Figure 4 is a partial cross-sectional enlarged view of the boiler in the beverage brewing mechanism;

Figure 5 is a circuit block diagram of the automatic temperature regulating device of the beverage brewing mechanism;

Figure 6 is a plan view showing the first embodiment of the adjusting device in the automatic temperature regulating device;

Figure 7 is similar to Figure 6, showing that the valve stem of the throttle valve is driven and axially displaced to another position;

Figure 8 is an axial sectional view of the throttle valve in the first embodiment of the adjusting device;

Figure 9 is a plan view showing a second embodiment of the adjusting device in the automatic temperature regulating device;

Figure 10 is a left side view of Figure 9;

Figure 11 is an axial sectional view of the throttle valve in the second embodiment of the adjusting device;

Figure 12 is a perspective view of a conventional beverage brewing mechanism. detailed description

In order to make the objects, the technical solutions and the advantages of the present invention more apparent, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1 and FIG. 2 together, the beverage brewing mechanism provided by the present invention mainly includes: a boiler 10 for receiving and storing an external water source; and at least one heater 11 and 12 for the inside of the boiler 10 The water storage is heated; at least one temperature detector 13, 14 is used to sense the water storage temperature in the boiler 10 and control the opening and closing of the heaters 11, 12 to keep the water stored in the boiler 10 a set temperature range; a hot water delivery pipe 15 for transporting water in the boiler 10; a cold water delivery pipe 16 for conveying external cold water; - an adjusting device 40 for adjusting the flow of cold water in the cold water delivery pipe 16; a mixing tank 20, which can receive and mix cold water and hot water respectively conveyed by the cold and hot water conveying pipes 15, 16 Synthesizing a proper temperature uniform temperature water stream; an outlet pipe 30 connected to the mixing tank body 20; and a water outlet control valve 31 disposed on the water outlet pipe 30, operatively opened during the beverage brewing process The uniform warm water flow is sent to a beverage filter cartridge 87 via the water outlet pipe 30 to perform a beverage brewing process.

The above-described water discharge control valve 31 and other isomorphic water flow control valves which will be mentioned later may use, for example, solenoid valves or other known types of valves for controlling water flow.

Based on the beverage brewing quality or other considerations, the present invention discharges the homogenized water stream mixed by the mixing tank 20 to the outside in the initial stage of the beverage brewing process. As shown in FIG. 1 and FIG. 2, the beverage brewing mechanism provided by the present invention further includes a drain pipe 32 connected to the water outlet pipe 30, and a drain control valve 33 and a drain section are mounted on the drain pipe 32. In the flow direction of the flow path, the connection between the drain pipe 32 and the water outlet pipe 30 is located in front of the water discharge control valve 31, so that the uniform temperature water flow from the mixing tank body 20 can be controlled. The ground flows into the water outlet pipe 30 or the drain pipe 32. When the beverage brewing process is started, the drain control valve 33 is opened, the water outlet control valve 31 is closed, and the uniform temperature water flow is discharged to the outside at a set flow rate; after discharging a predetermined flow rate, the water discharge control is performed again. The valve 31 is opened, and the drain control valve 33 is closed. At this time, the uniform temperature water flow mixed by the mixing tank 20 flows into the beverage filter cartridge 87 only through the outlet pipe 30 and the opened outlet control valve 31, and the beverage is flushed. Cooking program. After the beverage brewing program is completed, the water outlet control valve 31 and the drain control valve 33 are simultaneously closed.

The beverage brewing mechanism provided by the present invention further includes a water supply pump 50 provided with a water supply pipe 51 connected to the boiler 10, and a water supply manifold 52 connected to the adjustment device 40. When the water supply pump 50 is activated, an external cold water source can be pumped into the system by an inlet pipe 53, so that the external cold water source enters the boiler 10 via the water supply pipe 51, and the adjusting device 40 and the cold water conveying pipe are passed through the water supply pipe 51. 16 enters the mixing tank 20 .

A one-way pressure relief valve 54 is disposed in the water supply pipe 51 and in front of the water supply manifold 52, so that the external cold water source pumped by the water supply pump 50 flows into the boiler 10 and the mixing tank 20 in one direction; When the hot water pressure in the boiler 10 exceeds the preset pressure, the one-way relief valve 54 can be excluded from the pressure to keep the hot water system in a proper pressure state.

A safety valve is provided on the boiler 10. If the temperature of the hot water in the boiler 10 is abnormally increased due to the automatic control failure of the heating, the safety valve 17 can be used for pressure relief to ensure system safety.

In another preferred embodiment of the present invention, the beverage brewing mechanism further includes a water sprayer 35 disposed at the outlet end of the water outlet pipe 30, and the uniform temperature water flow in the water outlet pipe 30 is uniformly sprayed into the beverage in an atomized manner. In the filter cartridge 87, the beverage material (for example, coffee powder, tea leaves, bag tea, etc.) preset in the beverage filter cartridge 87 is uniformly contacted with the uniform temperature water flow, thereby effectively improving the brewing quality of the beverage.

In another preferred embodiment of the present invention, the beverage brewing mechanism further includes a water flow meter 36 disposed on the water outlet pipe 30 and behind the water discharge control valve 31, which can actually calculate the flow into the water sprayer 35. Warm water flow, when When the water discharge flow meter 36 calculates a set flow rate value, the water discharge control valve 31 is closed by program control, and the beverage brewing process is completed. The water flow rate is actually calculated through the water discharge flow meter 36, and the volume of the beverage after the brewing can be accurately controlled; the flow meter can also be optionally disposed on the water supply pipe 51 to calculate the total flow rate.

Referring to FIG. 1 to FIG. 3 at the same time, the outlet end of the water outlet pipe 30 or the mixing tank 20 is provided with an outlet water temperature detector 34 for detecting the temperature of the water. When the beverage brewing program starts to be set for a set time, or the outlet water temperature detector 34 detects the temperature of the uniform temperature water stream, and compares with the preset outlet water temperature, the detected temperature is compared with the preset outlet water temperature. The error value is adjusted by the adjusting device 40 to a corrected flow rate value, so that the temperature of the uniform temperature water flowing through the mixing tank 20 is adjusted to be the same as the preset outlet water temperature, so that the boiler water temperature is higher than the brewing temperature. At the temperature, the appropriate brewing temperature can be obtained, and the upper and lower limits of the boiler water temperature use temperature can be expanded.

Referring to FIG. 3, the mixing tank body 20 includes a body 21 having a cylindrical shape or other shape. The body 21 defines a mixing chamber 22 for mixing cold water and hot water. The mixing chamber 22 is divided into a first chamber. The inlet pipe 23, the second inlet pipe 24, and the outlet pipe 25 communicate with each other, and the rest remain closed. The first inlet pipe 23 is connectable to the hot water delivery pipe 15 for guiding the hot water supplied from the boiler 10 into the mixing chamber 22. The second inlet pipe 24 is connectable to the cold water delivery pipe 16 for guiding cold water supplied from an external water source into the mixing chamber 22. The outlet pipe 25 is connectable to the outlet pipe 30. The cold water and hot water introduced into the mixing chamber 22 are mixed with each other in the mixing chamber 22 to form a soaking water flow of a set temperature, and the temperature equal water flow flows from the outlet pipe 25 into the water outlet pipe 30.

In a preferred embodiment, the mixing chamber 22 may be provided with a screen 26 at the junction of the inlet tubes 23, 24 for filtering impurities which may be contained in the cold water and hot water entering the mixing chamber 22.

In a preferred embodiment, the first inlet pipe 23 is selectively connectable to the hot water delivery pipe 15 by a hot water restrictor 27, and the hot water restrictor 27 controls the entry into the mixing chamber 22. The hot water flow is a set fixed flow rate. The hot water restrictor 27 can also be selectively disposed at any position on the hot water delivery pipe 15.

The above described hot water restrictor 27 and other isomorphic restrictors to be mentioned hereinafter may use, for example, a throttle valve, a throttle joint or other known type of throttling device.

The outlet water temperature detector 34 can be selectively disposed on the outlet pipe 25 and extends into the outlet pipe 25 for detecting the outlet water temperature of the temperature equal water flow.

For convenience in processing and manufacturing, the mixing chamber 22 is substantially formed by drilling a hole in the top surface of the body 21, and tapping on the inner wall surface of the hole; after drilling and tapping, using a leak stop The nut 28 locks and closes the top opening of the aperture for forming the mixing chamber 22 in the closed state.

Referring to FIG. 5, the boiler 10 is provided with at least two heaters, such as a low-level heater 11 and a high-level heater 12, for simultaneously or separately heating the water stored in the boiler 10 for improving the inside of the boiler 10. The average temperature effect of water storage. In In the boiler 10, a low temperature detector 13 and a high temperature detector 14 are respectively disposed at positions corresponding to the two heaters 11, 12. When the low temperature detector 13 detects that the hot water temperature in the lower region of the boiler 10 is lower than the set temperature lower limit, the low heater 11 is activated to perform heating; otherwise, when the low temperature is When the detector 13 detects that the temperature of the hot water in the lower region of the boiler 10 is higher than the upper limit of the set temperature, the lower heater 11 is turned off to stop the heating. Similarly, when the high temperature detector 14 detects that the hot water temperature in the high region of the boiler 10 is lower than the set temperature lower limit, the high heater 12 is activated to perform heating; otherwise, when the high temperature is When the temperature detector 14 detects that the temperature of the hot water in the upper region of the boiler 10 is higher than the upper limit of the set temperature, the high heater 12 is turned off to stop heating, and the PID temperature can also be used for opening and closing the heater. The controller or other control mode performs the opening and closing of the heater.

The water supply pipe 51 extends into the bottom near central portion of the boiler 10 below the low-level heater 11, and is provided with a plurality of water supply holes 55 arranged on the outer circumferential surface of the water supply pipe 51 and arranged in a radial shape. When the outside cold water enters the boiler 10, it flows uniformly into the bottom region of the boiler 10 below the low-level heater 11 in a radial manner; the cold water flow flows upward into the hot water delivery pipe 15 at the top of the boiler 10, which can simultaneously Alternatively, the lower heater 11 and the high heater 12 are heated to be uniformly heated.

Referring to Fig. 6, the beverage brewing mechanism provided by the present invention further comprises an automatic temperature regulating device, which is composed of the adjusting device 40 for adjusting the flow rate of the cold water, a control processing unit 39, and an outlet temperature detector 34. The temperature detector 34 detects the actual water or cold water temperature from the water outlet side, and sends the measured actual temperature value to the control processing unit 39 for comparison with a set temperature value. If there is a difference, the control processing The unit 39 operates or is programmed according to the difference value of the two, and outputs a calculated specific control signal to the adjusting device 40, so that the cold water flow sent to the mixing tank 20 is automatically adjusted according to the specific control signal. The cold water after the adjusted flow rate is mixed with the hot water in the mixing tank 20 to be equal to the set temperature value and the temperature is supplied to the water, and the temperature difference of the water supply flow is not caused by the difference of the boiler hot water temperature or other factors. problem.

The user can further select an outlet water temperature value according to the type of brewing beverage (such as coffee or tea) via an operation panel (not shown). After the user completes the setting, the adjustment device 40 automatically The flow rate of the cold water supplied to the mixing tank body 20 is adjusted, and the fixed-flow hot water sent from the hot water delivery pipe 15 is mixed in the mixing tank body 20 into a temperature-equalized water flow having a temperature equal to the set outlet water temperature value. The beverage brewing mechanism provided by the present invention can be used to brew different types of beverages.

Referring to FIG. 7 to FIG. 9 , the first embodiment of the cold water flow adjusting device 40 provided by the present invention mainly includes a throttle valve 41 respectively connected to the water supply manifold 52 and the cold water conveying pipe 16 , and a The drive motor 42 and its transmission member that drive the throttle valve 41 to change the valve opening degree.

As shown in FIG. 7 and FIG. 8, the drive motor 42 can optionally use a stepping motor or a servo motor, which can accept the control. The specific control signal outputted by the processing unit 39 is rotated forward or reverse by a specific angle after comparing the difference value, thereby driving the throttle valve 41 to change its valve opening degree to adjust the cold water flow rate. In the first embodiment, the transmission member is a coupling 43 that allows relative displacement movement, and has a drive end block 431 that is interlocked with the motor shaft 421 of the drive motor 42 by a stop screw 436. And a driven end piece 432 that is interlocked with the valve stem 411 of the throttle valve 41 by another stop screw 437, the end blocks 431, 432 having a plurality of axially protruding prongs 433, 434 are configured such that each of the drive fork tips 433 interlocks with each other in the space between the slave fork tips 434, and between each pair of fork tips 433, 434 is provided with one end block 431, 432 axial clearance 435 relative to axial movement. When the drive motor 42 rotates the valve stem 411 of the throttle valve 41 via the coupling 43 , the valve stem 411 is screwed to the internal thread 412 of the throttle valve 41 (refer to FIG. 9 ). Therefore, the valve stem 411 rotates while generating an axial displacement movement (as shown in FIGS. 7 and 8 , that is, revealing the axial displacement stroke of the valve stem 411 ) to change the valve opening of the throttle valve 41 . The above axial gap 435 is used to allow the axial displacement movement of the valve stem 411.

The adjustment device 40 also includes an upper limit microswitch 44 and a lower microswitch 45 for limiting the axial displacement of the valve stem 411. In this embodiment, an annular flange 438 is disposed on the driven end block member 432, and at the upper and lower setting positions of the annular flange 438, the upper limit micro switch 44 and the lower limit are respectively disposed at intervals. Switch 45. When the annular flange 438 contacts the upper limit micro switch 44 or the lower limit micro switch 45 due to an unexpected factor, the power of the drive motor 42 can be immediately turned off to stop the rotation immediately to prevent the axial displacement of the valve stem 411. If the amount of exercise exceeds the allowable range, the fork tips 433, 434 can be prevented from being detached or damaged by relative impact, and the valve stem 411 can be prevented from accidentally colliding with the inner wall surface of the throttle valve 41.

As shown in FIG. 9, the throttle valve 41 mainly includes a valve stem 411 and a valve body 414. The two are engaged with each other by the internal thread 412 of the valve body 414 and the external thread 413 of the valve stem 411. The top end of the valve stem 411 is coupled to the coupling 43 and is rotatable by the drive motor 42 and generates an axial displacement movement due to the engagement of the inner and outer threads 412, 413. The valve body 414 is internally provided with a water inlet 415, a throttle channel 416 and a water outlet 417 which are connected to each other. The water inlet 415 is connected to the water supply manifold 52, and the water outlet 417 is connected to the cold water delivery pipe 16; A needle valve 418 disposed at the bottom end of the valve stem 411 extends into the throttle channel 416. The axial displacement movement of the needle valve 418 changes the opening of the throttle channel 416 to be adjusted. The flow of cold water from the water channel 417.

The valve body 414 and the valve stem 411 are further provided with a spring type leakage preventing member 419, which comprises at least one O-ring 4191 sandwiched between the valve body 414 and the valve stem 411; An annular washer 4192 above the 0-ring 4191 and a compression spring 4193; and a perforated nut 4194 threadedly engaged with the valve body 414. The holed nut 4194 is provided with a hole 4195 for allowing the valve stem 411 to pass freely, so as not to affect the rotation and displacement movement of the valve stem 411. The spring type leakage preventing member 419 is pressed against the compression spring 4193 by the holed nut 4194, and is pressed downward. A force is applied to the O-ring 4191 to cause the O-ring 4191 to be subjected to a leak-proof function to prevent leakage of water by an appropriate pressure, which has the advantages of improving the leak-stopping effect and prolonging the service life.

Referring to FIG. 10 to FIG. 12, the second embodiment of the cold water flow adjusting device 40' provided by the present invention has the same main structure as the first embodiment of the adjusting device 40, and only the difference between the two is hereinafter. It is to be noted that the constituent features are the same as those of the first embodiment of the adjusting device 40, and the description thereof will not be repeated. The transmission member in the adjusting device 40' is a transmission gear set 43' that allows relative displacement movement, and includes an active rack that is interlocked with the motor shaft 42'' of the driving motor 42' by a stop screw 436'. 431 ', and a driven gear 432' that is locked with the valve stem 41 Γ of the throttle valve 4 利用 by another stop screw 437 ′; the length of the active rack 431 ′ is greater than the driven gear 432 ′ Height to allow for relative axial displacement between the two. Further, a compression spring 46' is provided between the annular flange 438' and the outer wall surface of the valve body 414' for providing an elastic force for the upward displacement of the driven gear 432'.

As shown in Fig. 12, in the second embodiment of the adjusting device 40', at least one O-ring 4191' sandwiched between the valve body 414' and the valve stem 41" and at least one thrust bearing are used. 4196' serves as a leak stop member between the valve body 414' and the valve stem 411'.

The steps of performing the beverage brewing procedure using the beverage brewing mechanism of the above-described constituent features are exemplified as follows:

(a) During the standby phase, the water stored in the boiler 10 is preheated to a set temperature well above the temperature required for the brewed beverage, for example, between 148 and 152 °C;

(b) The user preliminarily places the material of the beverage to be brewed in the beverage filter cartridge 87 through an operation panel

(not shown), according to the type of the beverage to be brewed, the beverage brewing temperature (for example, 95 ° C) is set, and the start button of the brewing beverage is pressed to start the beverage brewing process;

(c) At the beginning of the start of the beverage brewing process, the beverage brewing mechanism activates the water supply pump 50, the drain control valve 33, the at least one heater 11, 12, and the outlet water control valve 31 remains closed; at this time, the outside cold water The water supply pipe 51 flows into the boiler 10, and the hot water that has been preheated in the boiler 10 and the steam generated during standby flow out through the hot water delivery pipe 15, and the hot water and steam flow through the mixing tank 20, and then through the drain control valve. 33 and the drain pipe 32 is discharged to the outside, and the initial draining step can discharge the residual water in the system to improve the accuracy of the brewing temperature;

(d) When the brewing program is started, the adjusting device 40, 40' is started by program control, and the hot water restrictor 27 controls the proper flow rate of the hot water, so that the cold water portion flows through the adjustment of the cold water flow rate automatically adjusted according to the water temperature. The device 40, 40', the cold water that has been automatically adjusted to an appropriate flow rate, is sent to the mixing tank 20 and mixed with the hot water flowing in through the hot water delivery pipe 15 to form a uniform temperature water flow having a selected outlet water temperature value (for example, 95 ° C);

(e) when the outlet water temperature detector 34 detects that the uniform temperature water flowing out of the mixing tank 20 has reached the selected outlet water temperature value (for example, 95 ° C), the drain control valve 33 is closed by program control, and the outlet water control is simultaneously opened. Valve 31, the temperature is kept at this time The uniform temperature water flow of the outlet water temperature value (for example, 95 ° C) flows through the water discharge flow meter 36, and then the uniform temperature water flow is atomized into fine water droplets through the water discharge atomizer 35, and is uniformly sprayed on the beverage preset in the beverage filter cartridge 87. In the material, the extracted beverage solution flows down to a storage bucket (not shown) for storage;

(f) The temperature detector 34 detects the temperature difference between the temperature of the uniform temperature water stream and the preset temperature of the uniform temperature water flow or the cold water temperature detector 37 detects the cold water temperature ratio to the preset cold water temperature. The adjusting device 40, 40' automatically corrects and adjusts the flow rate of the cold water, so that the actual temperature of the uniform temperature water flow mixed with the hot water can be kept equal to the selected outlet water temperature value (for example, 95 ° C) to avoid the boiler heat. The difference in water temperature affects the stability of the outlet water temperature;

(g) When the flow meter 36 calculates the flow rate of the isothermal water flow to a predetermined flow rate, the outlet control valve 31, the adjustment unit 40, 40' and the water supply pump 50 are closed to complete the brewing procedure.

The beverage brewing mechanism provided by the present invention has the following advantages when compared with the aforementioned beverage brewing mechanism:

3. Detecting the water temperature and temperature, automatically correcting and adjusting the cold water flow by detecting the temperature difference, making the beverage brewing temperature more stable and the beverage brewing quality more stable;

4. The water sprayer uniformly sprays the uniform warm water flow in an atomizing manner, so that the beverage material is uniformly contacted with the hot water, and the brewing quality of the beverage is effectively improved;

6. The boiler is provided with at least two heaters located at the high and low positions and their temperature detectors, which can simultaneously or separately heat the water stored in the boiler to improve the uniform temperature effect of the water stored in the boiler.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are included in the spirit and principles of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

Claim

A beverage brewing mechanism, comprising:

a boiler for receiving and storing external water sources;

At least one heater for heating the water stored in the boiler;

At least one temperature detector for detecting the temperature of the water storage in the boiler and controlling the opening and closing of the heater, so that the water storage in the boiler is maintained within a set temperature range;

a hot water delivery pipe for transporting water in the boiler;

a cold water delivery pipe for conveying cold water outside;

An adjusting device for adjusting the flow of cold water in the cold water conveying pipe;

a mixing tank, which can receive cold water and hot water respectively delivered by the cold water conveying pipe and the hot water conveying pipe, and mix the cold water and the hot water into a uniform temperature water flow at an appropriate temperature;

An outlet pipe connected to the mixing tank and capable of receiving the isothermal water flow;

A water outlet control valve disposed on the water outlet pipe, when the water outlet control valve is opened, the warm water flow flows out through the water outlet pipe for the beverage brewing process.

2. The beverage brewing mechanism according to claim 1, wherein the mixing tank body comprises: a body;

a mixing chamber formed inside the body;

a first inlet pipe connected to the hot water conveying pipe for guiding the hot water into the mixing chamber; a second inlet pipe connected to the cold water conveying pipe for guiding the cold water into the mixing And an outlet pipe connected to the outlet pipe for guiding the equal-temperature water flow mixed with each other in the mixing chamber into the outlet pipe.

3. The beverage brewing mechanism according to claim 1, further comprising a hot water restrictor for adjusting the hot water flow rate of the hot water delivery pipe.

4. The beverage brewing mechanism according to claim 1, further comprising:

a drain pipe that receives the equal temperature water flow;

a drain restrictor disposed on the drain pipe;

A drain control valve disposed on the drain pipe, when the drain control valve is opened, the uniform warm water flow is discharged to the outside through the drain pipe at a set flow rate.

5. The beverage brewing mechanism according to claim 1, further comprising a device disposed on the outlet pipe An outlet flow meter located behind the outlet control valve is configured to calculate an actual flow rate of the uniform temperature water flow through the outlet control valve. When the outlet flow meter calculates a set flow value, the control causes the outlet control valve to close.

6. The beverage brewing mechanism according to claim 1, further comprising a water sprayer disposed at an outlet end of the water outlet pipe, wherein the temperature equal water flow is uniformly sprayed in an atomized manner.

7. The beverage brewing mechanism according to claim 1, wherein the boiler is provided with a low level heater and a high level heater for at least two heaters for storing water in different areas of the boiler. heating.

The beverage brewing mechanism according to claim 7, wherein at least two temperatures of a low temperature detector and a high temperature detector are respectively disposed at positions corresponding to the heaters in the boiler respectively. The detector is configured to detect the storage temperature of different areas in the boiler, and respectively control the opening and closing of the heater corresponding to the same, so that the water storage in different areas of the boiler is maintained within a set temperature range .

9. The beverage brewing mechanism according to claim 1, further comprising a water supply pump provided with a water supply pipe supplying an external water source to the boiler, and a water supply for supplying an external water source to the cold water delivery pipe Manifold.

The beverage brewing mechanism according to claim 9, wherein the water supply pipe extends into a bottom portion of the boiler below the heater, and the water supply pipe is provided with a plurality of radiation-like arrays. The water supply hole allows the external water source to uniformly flow into the boiler in a radial manner.

An automatic temperature regulating device for a beverage brewing mechanism, comprising:

At least one temperature detector for detecting the actual temperature value of the water stream;

a control processing unit, after receiving the actual temperature value, compares with a set temperature value, and if there is a difference, performs an operation according to the difference value of the two, and outputs a calculated specific control signal;

An adjusting device includes a driving motor, a transmission member and a throttle valve. The driving motor rotates a specific angle after receiving the specific control signal, and drives the throttle valve to change the valve opening degree thereof through the transmission member. To adjust the flow of water through the throttle.

The automatic temperature regulating device of the beverage brewing mechanism according to claim 11, wherein the temperature detector is configured to detect an actual temperature value of the water flow of the beverage brewing mechanism.

13. The automatic temperature regulating device of a beverage brewing mechanism according to claim 11, wherein the transmission member is a coupling that allows relative displacement movement, and includes a driving end connected to the driving motor a block member, and a driven end block member connected to the throttle valve; the drive and driven end block members respectively have a plurality of axially protruding drive fork tips and driven fork tips configured to drive each drive The prongs are interlocked within the space between the respective slave prongs with an axial gap between each pair of drive and driven prongs that permits relative axial movement of the drive and driven end pieces.

The automatic temperature regulating device of the beverage brewing mechanism according to claim 11, wherein the throttle valve The utility model comprises a valve body and a valve stem which are engaged with each other by using a thread; the valve body is internally provided with a water inlet, a water passage and a water outlet which are connected to each other; one end of the valve rod is connected with the transmission member. Rotating and axially displaceable relative to the valve body by the drive motor; the other end of the valve stem has a portion of a needle valve extending into the throttle passage, through the axial displacement movement of the needle valve, The opening of the throttle channel is changed, and the flow of cold water outputted by the water outlet is adjusted.

The automatic temperature regulating device of the beverage brewing mechanism according to claim 14, further comprising an upper limit micro switch and a lower limit micro switch for limiting an axial displacement stroke of the valve stem, When a microswitch is touched, the drive motor can be turned off immediately.

The automatic temperature regulating device of the beverage brewing mechanism according to claim 14, wherein a valve-type leakage preventing member is further disposed between the valve body and the valve stem, and the method comprises:

At least one O-ring that is sandwiched between the valve body and the valve stem;

Pressing an annular washer and a compression spring above the O-ring; and

a holed nut screwed onto the valve body in a threaded engagement manner, and is provided with a hole for allowing the valve stem to pass freely; the holed nut is pressed against the compression spring, and the lower pressure elastic force is applied On the O-ring, the O-ring is pressurized to prevent water from leaking between the valve body and the valve stem.

The automatic temperature regulating device of the beverage brewing mechanism according to claim 14, wherein at least one O-ring for leak prevention and at least one thrust are interposed between the valve body and the valve stem. Bearing.

The automatic temperature regulating device of the beverage brewing mechanism according to claim 11, wherein the transmission member is a transmission gear set that allows relative displacement movement, and includes an active rack connected to the driving motor, And a driven gear connected to the throttle valve; the length of the active rack is greater than the height of the driven gear to allow relative axial displacement between the two.