Constant-temperature wine cabinet and wine cabinet constant-temperature control method

Abstract

The invention belongs to the technical field of wine cabinets, and particularly relates to a constant-temperature wine cabinet and a wine cabinet constant-temperature control method. According to the constant-temperature wine cabinet disclosed by the invention, the pressure release valve is introduced to cooperatively work with the condenser and the compressor, and the control module controls the alternating working time of the pressure release valve and the compressor, so that the problem of large temperature fluctuation caused by long start-stop interval time of the compressor in a traditional wine cabinet refrigerating system is well solved; the high-pressure liquid refrigerant of the condenser is rapidly released and diffused to the evaporator through the return pipe, so that the internal pressure of the condenser is reduced to the starting pressure value of the compressor, the compressor can be rapidly started in a light load mode in a short time, the interval starting time of the compressor is shortened, and therefore accurate control over the temperature in the cabinet is achieved. The temperature control precision of the wine cabinet is improved, the load of the compressor is reduced, the service life of equipment is prolonged, and the use effect is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of wine cabinets, and particularly relates to a constant-temperature wine cabinet and a method for controlling the constant temperature of a wine cabinet. Background Art

[0002] In the field of red wine storage, maintaining a constant temperature is one of the key factors to ensure the quality of red wine. The traditional wine cabinet refrigeration system usually controls the temperature inside the cabinet by starting and stopping the compressor. When the refrigeration temperature of the wine cabinet drops to the set temperature, the temperature sensor will trigger the compressor to pause working. When the temperature inside the cabinet rises to the temperature that requires refrigeration, the temperature sensor will transmit a signal to restart the compressor. However, generally after the compressor stops, the high-pressure refrigerant in the condenser needs a long time to release pressure to meet the pressure value required for the compressor to start and then restart. This situation causes the compressor to be unable to restart again in a short time, resulting in large fluctuations in the temperature inside the cabinet. Such temperature fluctuations will not only affect the taste of red wine but also may cause premature aging of red wine. Summary of the Invention

[0003] The purpose of the present invention is to overcome the problem that the existing wine cabinet constant-temperature method causes premature aging of red wine, and to provide a constant-temperature wine cabinet and a method for controlling the constant temperature of a wine cabinet that enable the compressor to start lightly loaded in a short time by the coordinated work of a condenser, a compressor, and a pressure relief valve to achieve a constant-temperature effect.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A constant-temperature wine cabinet, comprising a cabinet body and a refrigeration system; the cabinet body is provided with a cabinet opening with an opening at the front side and a refrigeration chamber inside; the refrigeration system includes a control module, a temperature sensor, a compressor, a condenser, a pressure relief valve, an evaporator, a capillary tube, and a drying filter. The condenser is used to cool the high-temperature and high-pressure gaseous refrigerant transported by the compressor into a liquid refrigerant. The drying filter is provided with a first joint, a second joint, and a third joint. The first joint is connected to the output end of the condenser. The second joint is connected to the input end of the evaporator through the capillary tube, so that the liquid refrigerant flows through the drying filter and the capillary tube in sequence and then forms a gas-liquid mixed refrigerant and enters the evaporator. The output end of the evaporator is connected to the input end of the compressor through a return pipe. The third joint is communicated with the return pipe of the evaporator through the pressure relief valve; the temperature sensor is used to detect the temperature inside the cabinet body, and when the internal temperature of the wine cabinet drops to a first temperature, the control module is enabled to control the compressor to pause working and control the pressure relief valve to open, and when it is detected that the internal temperature of the wine cabinet rises to a second temperature, the control module is enabled to control the compressor to start working and control the pressure relief valve to close; when the pressure relief valve is activated, it is used to release the liquid refrigerant output by the condenser to reduce the pressure to form a gaseous refrigerant and diffuse it to the evaporator through the return pipe, so that the internal pressure of the condenser drops to the starting pressure value of the compressor, and thus the control module controls the compressor to resume working and closes the pressure relief valve.

[0006] Compared with the prior art, the constant temperature wine cabinet of the present invention introduces a pressure relief valve to work in coordination with the condenser and the compressor. The control module controls the timing of alternating operation of the pressure relief valve and the compressor, thereby effectively solving the problem of large temperature fluctuations in the traditional wine cabinet refrigeration system caused by the long start-stop interval of the compressor. When the compressor stops working, the pressure relief valve is triggered to quickly release the high-pressure liquid refrigerant in the condenser and diffuse it to the evaporator through the reflux pipe, so that the internal pressure of the condenser drops to the starting pressure value of the compressor, so that the compressor can be started quickly with a light load in a short time, and the interval start-up time of the compressor is shortened, thereby realizing precise control of the temperature in the cabinet, which not only improves the temperature control accuracy of the wine cabinet, but also reduces the load of the compressor working for a long time at one time, thereby extending the service life of the equipment and achieving good use effect.

[0007] Furthermore, it also includes a water receiving tray arranged on the rear side of the cabinet, the water receiving tray is used to store condensed water, the condenser is a condenser, and the condenser part is placed in the water receiving tray; through such an arrangement, the condenser is cooled and lowered by adding condensed water, which can improve the cooling and pressure reduction effect of the condenser.

[0008] Furthermore, part of the condenser tubes placed in the water receiving tray are condenser spiral segments; by such an arrangement, the heat dissipation area of ​​the condenser tubes can be increased, and the temperature and pressure reduction efficiency of the condenser can be improved.

[0009] Furthermore, it also includes a three-way joint, the return pipe includes a first return pipe and a second return pipe, the output end of the pressure relief valve is connected to the pressure relief pipe, the three-way joint is respectively connected to the first return pipe, the second return pipe and the pressure relief pipe, the other end of the first return pipe is connected to the output end of the evaporator, and the other end of the second return pipe is connected to the input end of the compressor; through such an arrangement, the first return pipe, the second return pipe and the pressure relief pipe are connected by a three-way joint, and the structural connection method is simple.

[0010] Furthermore, the condenser includes a condensing coil section arranged on the rear side of the cabinet; through such an arrangement, the heat dissipation area of ​​the condensing tube is effectively increased, and the temperature and pressure reduction efficiency of the condenser is improved.

[0011] Furthermore, it also includes a temperature sensor arranged in the cabinet, and the control module is electrically connected to the pressure relief valve and the compressor respectively.

[0012] A constant temperature control method for a wine cabinet includes: starting a compressor to compress a gaseous refrigerant in a refrigeration system into a high-temperature and high-pressure gaseous refrigerant and transporting the gaseous refrigerant to a condenser, and the condenser cools the high-temperature and high-pressure gaseous refrigerant into a high-pressure liquid refrigerant.

[0013] The high-pressure liquid refrigerant is throttled by a capillary tube to reduce the temperature and pressure, forming a low-temperature and low-pressure gas-liquid mixed refrigerant. After entering the evaporator for heat exchange, it returns to the compressor through the return pipe.

[0014] When the temperature sensor detects that the temperature inside the wine cabinet drops to the first temperature, the control module controls the compressor to pause working and controls the pressure relief valve to open, so that the high-pressure liquid refrigerant in the condenser is released and diffused to the evaporator through the return pipe, so that the internal pressure of the condenser drops to the starting pressure value of the compressor.

[0015] When the temperature sensor detects that the temperature inside the wine cabinet rises to the second temperature, the control module controls the compressor to resume working and controls the pressure relief valve to close.

[0016] Compared with the prior art, the constant temperature control method of the wine cabinet of the present invention, by introducing a pressure relief valve to work in coordination with the condenser and the compressor, the control module controls the timing of the alternating work of the pressure relief valve and the compressor, and preferably solves the problem of large temperature fluctuations caused by long start-stop intervals of the compressor in the traditional wine cabinet refrigeration system. When the compressor stops working, the pressure relief valve is triggered to work to quickly release the high-pressure liquid refrigerant in the condenser and diffuse it to the evaporator through the return pipe, so that the internal pressure of the condenser drops to the starting pressure value of the compressor, enabling the compressor to start lightly in a short time, shortening the interval start time of the compressor, thereby realizing precise control of the temperature inside the cabinet, not only improving the temperature control accuracy of the wine cabinet, but also reducing the load of the compressor and prolonging the service life of the equipment, with good use effects.

[0017] Further, the start-stop frequency of the compressor and the opening timing of the pressure relief valve are dynamically adjusted by the control module according to the change of the set temperature; by setting like this, it is convenient for the control module to accurately adjust the working problem of the wine cabinet according to the requirements.

[0018] Further, the condenser is a condensing pipe, and part of the condensing pipe is cooled by the condensed water in the water receiving tray. The condenser includes a segmented condensing coil and a segmented condensing spiral; by setting like this, the heat dissipation area of the condensing pipe can be effectively increased, and the cooling and pressure reduction efficiency of the condenser can be improved. Description of the Drawings

[0019] Figure 1 It is a front side schematic diagram of the wine cabinet.

[0020] Figure 2 It is a rear side schematic diagram of the wine cabinet.

[0021] Figure 3 It is a schematic diagram of the refrigeration system Figure 1 。

[0022] Figure 4 It is a schematic diagram of the refrigeration system Figure 2 。 Detailed implementation manners

[0023] The following describes the detailed implementation manners of the present invention with reference to the accompanying drawings. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0024] Embodiment 1:

[0025] Refer to Figures 1 to 4 , the constant temperature wine cabinet of the present invention includes a cabinet body 1, a cabinet door 2 and a refrigeration system 3; the cabinet body 1 is provided with a cabinet opening with an opening at the front side and a refrigeration chamber 11 inside, and the cabinet door 2 is used to open or close the refrigeration chamber 11; the refrigeration system 3 includes a control module (not shown in the figure), a temperature sensor (not shown in the figure), a compressor 31, a condenser 32 (the condenser is not indicated in the figure), a pressure relief valve 33, an evaporator 34, a capillary tube 35 and a drying filter 36. The condenser 32 is used to cool the high-temperature and high-pressure gaseous refrigerant conveyed by the compressor 31 into a liquid refrigerant. The drying filter 36 is provided with a first joint 361, a second joint 362 and a third joint 363. The first joint 361 is connected to the output end of the condenser 32, and the second joint 362 is connected to the input end of the evaporator 34 through the capillary tube 35. After the liquid refrigerant flowing out of the output end of the condenser 32 flows through the drying filter 36 and the capillary tube 35 in sequence, a gas-liquid mixed refrigerant enters the evaporator 34. The output end of the evaporator 34 is connected to the input end of the compressor 31 through a return pipe, and the third joint 363 is communicated with the return pipe of the evaporator 34 through the pressure relief valve 33;

[0026] The temperature sensor is used to detect the temperature inside the cabinet body, and when the internal temperature of the wine cabinet drops to the first temperature, the control module controls the compressor 31 to suspend operation, and the control module controls the pressure relief valve 33 to open, so that the high-pressure liquid refrigerant in the condenser 32 is released and diffused to the evaporator 34 through the return pipe, so that the internal pressure of the condenser 32 drops to the starting pressure value of the compressor 31; and when it is detected that the internal temperature of the wine cabinet rises to the second temperature; the control module controls the compressor 31 to resume operation and controls the pressure relief valve 33 to close.

[0027] When the pressure relief valve 33 is activated, it is used to release the liquid refrigerant output by the condenser 32 to reduce the pressure to form a gaseous refrigerant and diffuse it to the evaporator 34 through the return pipe, so that the internal pressure of the condenser 32 drops to the starting pressure value of the compressor 31, so that the control module controls the compressor 31 to resume operation and closes the pressure relief valve 33.

[0028] Compared with the prior art, in the constant-temperature wine cabinet of the present invention, by introducing a pressure relief valve 33 to work in coordination with a condenser 32 and a compressor 31, the control module controls the timing of the alternating operation of the pressure relief valve 33 and the compressor 31, and preferably solves the problem of large temperature fluctuations in the traditional wine cabinet refrigeration system 3 caused by the long start-stop interval time of the compressor 31. When the compressor 31 stops working, the pressure relief valve 33 is triggered to work to quickly release the high-pressure liquid refrigerant in the balance condenser 32 and diffuse it to the evaporator 34 through the return pipe, so that the internal pressure of the condenser 32 drops to the starting pressure value of the compressor 31, enabling the compressor 31 to start lightly and quickly in a short time, shortening the interval start time of the compressor 31, thereby realizing precise control of the temperature inside the cabinet. This not only improves the temperature control accuracy of the wine cabinet, but also reduces the load of the compressor 31 working for a long time at one time, extends the service life of the equipment, and has good use effects.

[0029] The compressor 31 is a compressor 31 in the prior art, and its working principle is to compress the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gas and transport it into the condenser 32. The condenser 32 is used to cool the high-temperature and high-pressure gaseous refrigerant transported by the compressor 31 into a liquid refrigerant. After the liquid refrigerant flows outwards in the condenser 32 and passes through the drying filter 36 and the capillary tube 35, it forms a gas-liquid mixed refrigerant and enters the evaporator 34 for heat exchange, releasing the cold quantity to the cabinet body 1 to achieve refrigeration. When the internal temperature of the cabinet body 1 drops to the first temperature, the temperature sensor feeds back a signal to the control module to control the compressor 31 to pause working and trigger the pressure relief valve 33 to open. At this time, the liquid refrigerant in the condenser 32 quickly diffuses to the evaporator 34 through the return pipe, so that the internal pressure of the condenser 32 drops to the starting pressure value of the compressor 31.

[0030] When the temperature sensor detects that the internal temperature of the cabinet body 1 rises to the second temperature, the control module controls the compressor 31 to resume working and closes the pressure relief valve 33.

[0031] Among them, the value of the first temperature is less than the value of the second temperature. For example, the first temperature is 4.8 °C and the second temperature is 5.2 °C. Thus, the temperature inside the cabinet body 1 can be controlled between 4.8 °C and 5.2 °C, realizing the temperature control accuracy of the wine cabinet, and also avoiding the compressor 31 being unable to start due to the unbalanced pressure between the condenser 32 and the compressor 31, thereby causing large temperature fluctuations inside the cabinet body 1 and affecting the taste of the red wine. By setting the pressure relief valve 33, when the temperature inside the cabinet body 1 rises to the first temperature, the internal pressure of the condenser 32 is released through the pressure relief valve 33 and drops to the starting pressure value of the compressor 31, enabling the compressor 31 to start quickly and shortening the interval start time of the compressor 31, thereby realizing precise control of the temperature inside the cabinet body 1.

[0032] The specific values and accuracy differences of the first temperature and the second temperature can also be set according to actual usage requirements.

[0033] The drying filter 36 is used to dry the refrigerant entering the interior and filter out impurities.

[0034] See Figures 2 to 4 , in an embodiment, it further includes a water receiving tray 38 provided at the rear side of the cabinet 1. The water receiving tray 38 is used to store condensed water. The condenser 32 is a condensing pipe, and a part of the condensing pipe is placed in the water receiving tray 38. By setting it in this way, the condenser 32 can be cooled by the condensed water, which can improve the cooling and pressure reduction effect of the condenser 32.

[0035] See Figures 2 to 4 , in an embodiment, the part of the condensing pipe placed in the water receiving tray 38 is a condensing spiral segment 321. By setting it in this way, the heat dissipation area of the condensing pipe can be increased, and the cooling and pressure reduction efficiency of the condenser 32 can be improved.

[0036] See Figures 2 to 4 , in an embodiment, it further includes a tee joint. The return pipe includes a first return pipe 371 and a second return pipe 372. The output end of the pressure relief valve 33 is connected with a pressure relief pipe 39. The tee joint is respectively connected with the first return pipe 371, the second return pipe 372 and the pressure relief pipe 39. The other end of the first return pipe 371 is connected with the output end of the evaporator 34, and the other end of the second return pipe 372 is connected with the input end of the compressor 31. By setting it in this way, the first return pipe 371, the second return pipe 372 and the pressure relief pipe 39 are connected by a tee joint, and the structural connection method is simple.

[0037] See Figures 2 to 4 , in an embodiment, the condenser 32 includes a condensing coil segment 322 provided at the rear side of the cabinet 1. By setting it in this way, the heat dissipation area of the condensing pipe is effectively increased, and the cooling and pressure reduction efficiency of the condenser 32 is improved.

[0038] See Figures 2 to 4 , in an embodiment, it further includes a temperature sensor (not shown in the figure) provided in the cabinet 1, and the control module is electrically connected to the pressure relief valve 33 and the compressor 31 respectively.

[0039] Embodiment 2:

[0040] See Figures 1 to 4 , the constant temperature control method of the wine cabinet of the present invention includes: starting the compressor 31 to compress the gaseous refrigerant in the refrigeration system 3 into a high-temperature and high-pressure gaseous refrigerant and delivering it to the condenser 32, and the condenser 32 cools the high-temperature and high-pressure gaseous refrigerant into a high-pressure liquid refrigerant.

[0041] The high-pressure liquid refrigerant is throttled, cooled and depressurized through the capillary tube 35 to form a low-temperature and low-pressure gas-liquid mixed refrigerant and enters the evaporator 34 for heat exchange, and then returns to the compressor 31 through the return pipe.

[0042] When the temperature sensor detects that the internal temperature of the wine cabinet drops to the first temperature, the control module controls the compressor 31 to suspend operation and controls the pressure relief valve to open, so that the high-pressure liquid refrigerant in the condenser is released and diffused to the evaporator 34 through the return pipe, so that the internal pressure of the condenser drops to the starting pressure value of the compressor 31.

[0043] When the temperature sensor detects that the internal temperature of the wine cabinet rises to the second temperature, the control module closes the pressure relief valve and controls the compressor 31 to resume operation at the same time.

[0044] Compared with the prior art, in the wine cabinet constant temperature control method of the present invention, by introducing the pressure relief valve 33 to work in coordination with the condenser 32 and the compressor 31, the control module controls the timing of the pressure relief valve 33 and the compressor 31 to work alternately, and preferably solves the problem of large temperature fluctuations caused by the long start-stop interval of the compressor 31 in the traditional wine cabinet refrigeration system 3. When the compressor 31 pauses operation, the pressure relief valve 33 is triggered to work to quickly release the high-pressure liquid refrigerant in the balance condenser 32 and diffuse it to the evaporator 34 through the return pipe, so that the internal pressure of the condenser 32 drops to the starting pressure value of the compressor 31, enabling the compressor 31 to start lightly and quickly within a short time, shortening the interval start time of the compressor 31, thereby realizing precise control of the temperature inside the cabinet, not only improving the temperature control accuracy of the wine cabinet, but also reducing the load of the compressor 31 and extending the service life of the equipment, with good use effects.

[0045] See Figures 2 to 4 , in an embodiment, the start-stop frequency of the compressor 31 and the opening timing of the pressure relief valve 33 are dynamically adjusted by the control module according to the set temperature change; by setting like this, the wine cabinet can adjust its refrigeration state according to the working temperature set by the user.

[0046] See Figures 2 to 4 , in an embodiment, the condenser 32 is a condensing pipe, and part of the condensing pipe is placed in the condensed water in the water receiving tray 38 for cooling and auxiliary temperature reduction. The condenser 32 includes a condensing coil segment 322 and a condensing spiral segment 321; by setting like this, the heat dissipation area of the condensing pipe is effectively increased, and the temperature reduction and pressure reduction efficiency of the condenser 32 is improved.

[0047] The specific implementation manner of the wine cabinet constant temperature control method in this embodiment can be realized through the structure of the constant temperature wine cabinet in Embodiment 1.

[0048] Based on the disclosure and teachings of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. Constant temperature wine cabinet, characterized in that: include: The cabinet body is provided with a cabinet opening with a front opening and a refrigeration chamber located inside; A refrigeration system, comprising a control module, a temperature sensor, a compressor, a condenser, a pressure relief valve, an evaporator, a capillary tube and a filter drier, wherein the condenser is used to cool the high-temperature and high-pressure gaseous refrigerant delivered by the compressor into a liquid refrigerant, the filter drier is provided with a first joint, a second joint and a third joint, the first joint is connected to the output end of the condenser, the second joint is connected to the input end of the evaporator through the capillary tube, so that the liquid refrigerant flows through the filter drier and the capillary tube in sequence to form a gas-liquid mixed refrigerant and enter the evaporator, the output end of the evaporator is connected to the input end of the compressor through a return pipe, and the third joint is connected to the return pipe of the evaporator through the pressure relief valve; The temperature sensor is used to detect the temperature inside the cabinet, and when the internal temperature of the wine cabinet drops to a first temperature, the control module controls the compressor to stop working and controls the pressure relief valve to open, and when the internal temperature of the wine cabinet rises to a second temperature, the control module controls the compressor to start working and controls the pressure relief valve to close; When the pressure relief valve is activated, it is used to release the liquid refrigerant output by the condenser to reduce its pressure to form a gaseous refrigerant and diffuse it to the evaporator through the return pipe, so that the internal pressure of the condenser drops to the starting pressure value of the compressor, so that the control module controls the compressor to resume operation and close the pressure relief valve.

2. The constant temperature wine cabinet according to claim 1, characterized in that: It also includes a water receiving tray arranged at the rear side of the cabinet, the water receiving tray is used to store condensed water, the condenser is a condensation tube, and the condensation tube is partially placed in the water receiving tray.

3. The constant temperature wine cabinet according to claim 2, characterized in that: Some of the condensing pipes placed on the water receiving tray are condensing spiral sections.

4. The constant temperature wine cabinet according to claim 2, characterized in that: It also includes a three-way joint, the return pipe includes a first return pipe and a second return pipe, the output end of the pressure relief valve is connected to the pressure relief pipe, the three-way joint is respectively connected to the first return pipe, the second return pipe and the pressure relief pipe, the other end of the first return pipe is connected to the output end of the evaporator, and the other end of the second return pipe is connected to the input end of the compressor.

5. The constant temperature wine cabinet according to claim 1, characterized in that: The condenser comprises a condensing coil section arranged at the rear side of the cabinet.

6. The constant temperature wine cabinet according to claim 1, characterized in that: It also includes a temperature sensor arranged in the cabinet, and the control module is connected to the pressure relief valve and the compressor respectively.

7. A wine cabinet constant temperature control method, characterized in that: include: The compressor is started to compress the gaseous refrigerant in the refrigeration system into high-temperature and high-pressure gaseous refrigerant and transport it to the condenser. The condenser cools the high-temperature and high-pressure gaseous refrigerant into high-pressure liquid refrigerant. The high-pressure liquid refrigerant is throttled through the capillary tube to reduce temperature and pressure, forming a low-temperature and low-pressure gas-liquid mixed refrigerant, which enters the evaporator for heat exchange and then returns to the compressor through the return pipe. When the temperature sensor detects that the temperature inside the wine cabinet drops to the first temperature, the control module controls the compressor to stop working and controls the pressure relief valve to open, so that the high-pressure liquid refrigerant in the condenser is released and diffused to the evaporator through the return pipe, so that the internal pressure of the condenser drops to the starting pressure value of the compressor; When the temperature sensor detects that the temperature inside the wine cabinet rises to the second temperature, the control module controls the compressor to resume operation and controls the pressure relief valve to close.

8. The wine cabinet constant temperature control method according to claim 7, characterized in that: The condenser is a condenser tube, and part of the condenser tube is cooled by condensed water in a water receiving tray to assist in cooling.

9. The constant temperature control method for a wine cabinet according to claim 7, characterized in that: The condenser is a condenser tube, and the condenser includes a condenser coil section and a condenser spiral section.

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