Refrigerating system and refrigerator

Abstract

The invention discloses a refrigerating system and a refrigerator, the refrigerating system comprises a condenser and a water pan, the condenser is arranged in the water pan, and the water pan is selectively communicated with an external water source; the refrigerating system comprises a water control device connected with the water pan and an external water source, and the water control device is used for controlling the input water amount of the external water source input into the water pan. The condenser is placed in the water pan to dissipate heat through water cooling, so that the heat dissipation effect is better; and the water control device ensures that the water in the water pan is always appropriate, so that the water-cooling heat dissipation effect of the condenser is ensured.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration, and in particular to a refrigeration system and a refrigerator. Background Art

[0002] Energy saving is one of the development directions of refrigerator technology. The heat dissipation method of the refrigerator refrigeration system has gradually evolved from natural convection heat dissipation to forced convection heat dissipation, and has gradually developed iteratively.

[0003] Currently, the heat dissipation of refrigerator refrigeration systems is mostly achieved through forced air convection. The heat dissipation capacity of the refrigerator can be improved by increasing the heat dissipation area, improving the heat dissipation efficiency, and strengthening convection. However, the forced air convection method always has its limits. Summary of the invention

[0004] One of the purposes of the present invention is to provide a refrigeration system to solve the technical problem in the prior art that the refrigeration system has a limitation in heat dissipation through forced convection.

[0005] One of the objects of the present invention is to provide a refrigerator.

[0006] To achieve one of the above-mentioned purposes of the invention, one embodiment of the present invention provides a refrigeration system, including a condenser and a water receiving pan, wherein the condenser is arranged in the water receiving pan, and the water receiving pan can be selectively connected to an external water source; the refrigeration system includes a water control device connecting the water receiving pan and the external water source, and the water control device is used to control the amount of water input from the external water source to the water receiving pan.

[0007] As a further improvement of one embodiment of the present invention, the refrigeration system includes an evaporator, the water receiving pan is connected to the evaporator through a pipeline to receive defrost water from the evaporator, the water receiving pan is set with a minimum liquid level height, and the condenser is lower than the minimum liquid level height.

[0008] As a further improvement of one embodiment of the present invention, the water control device includes a sensor and a solenoid valve. The sensor is arranged in the water receiving tray to monitor the change of the liquid level in the water receiving tray. One end of the solenoid valve is connected to an external water source, and the other end is connected to the water receiving tray to open or close the water input from the external water source to the water receiving tray.

[0009] As a further improvement of one embodiment of the present invention, the water receiving tray is set with a maximum liquid level height, the solenoid valve is opened to supply water to the water receiving tray, the sensor monitors the water level in the water receiving tray, and when the water level in the water receiving tray reaches the maximum liquid level height, the solenoid valve is closed.

[0010] As a further improvement of one embodiment of the present invention, the refrigeration system includes a compressor, the condenser receives high-temperature gas from the compressor and condenses the high-temperature gas into a low-temperature liquid; the water receiving pan is set with a minimum liquid level height, and when the sensor detects that the water level in the water receiving pan is at the minimum liquid level height and the compressor is started, the solenoid valve opens; the higher the speed of the compressor, the longer the solenoid valve operates.

[0011] As a further improvement of one embodiment of the present invention, the water receiving pan and the compressor are arranged in the compressor compartment. When the compressor is set to a specific speed value, the environment of the compressor compartment has a corresponding water evaporation rate W, and the time T2 for the solenoid valve to open and run is configured as W*T1=Z*T2, wherein the compressor running time is T1, and the water flow rate of the solenoid valve is Z.

[0012] As a further improvement of an embodiment of the present invention, the larger the speed value of the compressor, the higher the temperature of the compressor compartment, and the faster the corresponding water evaporation rate. The water evaporation rate W=

[0013] K(Pw-Pa) / L, where K is the proportionality constant, Pw is the saturated vapor pressure of water, Pa is the ambient vapor pressure, and L is the heat of evaporation of water.

[0014] As a further improvement of one embodiment of the present invention, the water control device includes a control board electrically connected to the solenoid valve and the sensor, and the control board is used to receive liquid level information from the sensor and control the opening and closing of the solenoid valve according to the liquid level information.

[0015] As a further improvement of one embodiment of the present invention, the condenser is a phase change thermal storage microchannel condenser, and the sensor is a liquid level sensor.

[0016] To achieve one of the above-mentioned purposes of the invention, one embodiment of the present invention provides a refrigerator, comprising a refrigeration system as described in any one of the above-mentioned technical solutions.

[0017] Compared with the prior art, the present invention provides a refrigeration system, in which the condenser is placed in a water receiving tray and dissipates heat through water cooling, which has a better heat dissipation effect; a water control device ensures that there is always an appropriate amount of water in the water receiving tray to ensure the water cooling heat dissipation effect of the condenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a refrigeration system in one embodiment of the present invention.

[0019] Description of Figure Numbers:

[0020] 100. Refrigeration system;

[0021] 10. Condenser;

[0022] 30. Water tray;

[0023] 50. Water control device; 51. Sensor; 52. Solenoid valve; 53. Control panel;

[0024] A. Minimum liquid level height; B. Maximum liquid level height. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0026] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In addition, the terms "first", "second", "third", "fourth", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] The terms "connected", "connected to" or any other variants are intended to cover various relative positions in a connection relationship, so as to include direct connection or indirect connection. Among them, the direct connection can be formed by a gas pipeline, and the indirect connection can be a connection relationship established by a device such as a valve body, a sensor, etc., a connection relationship can be established by a gas circuit component such as a drying filter device, or a connection relationship can be established by any other medium such as air.

[0028] See also Figure 1 , is a structural schematic diagram of a refrigeration system 100 provided in one embodiment of the present invention.

[0029] The refrigeration system 100 includes a condenser 10 and a water receiving tray 30, wherein the condenser 10 is disposed in the water receiving tray 30, and the water receiving tray 30 can be selectively connected to an external water source; the refrigeration system 100 includes a water control device 50 connected to the water receiving tray 10 and the external water source, wherein the water control device 50 is used to control the amount of water input from the external water source to the water receiving tray 30.

[0030] In this way, the condenser 10 is arranged in the water receiving tray 10 to dissipate heat by water cooling. Compared with the heat dissipation method of strong air convection, the heat dissipation can be significantly improved to break through the limit of the traditional heat dissipation method of strong air convection; the water receiving tray 30 can be selectively connected to an external water source through the water control device 50. At the same time, the water control device 50 can also further control the amount of water added to the water receiving tray 30 by the external water source according to the evaporation amount of water in the water receiving tray 30, so as to ensure that the water receiving tray 30 always has a suitable amount of water for water cooling the condenser 10.

[0031] The refrigeration principle of the refrigeration system 100 of a common refrigerator is to achieve heat absorption refrigeration through the change of the refrigerant state, and transfer the heat of food to the outside of the refrigerator. The refrigeration system 100 includes a compressor, a condenser 10, a drying filter, a capillary tube (throttling pressure reducer) and an evaporator connected in sequence, and the compressor and the evaporator are also connected to each other to achieve circulation.

[0032] The low-temperature and low-pressure refrigerant gas is compressed by the compressor and becomes a high-temperature and high-pressure gas, and then enters the condenser 10 to become a low-temperature and low-pressure liquid. At this time, the condenser 10 releases a large amount of heat to the outside.

[0033] Therefore, the condenser 10 is directly arranged in the water receiving pan 30. When the condenser 10 releases a large amount of heat, the water in the water receiving pan 30 will evaporate. In order to ensure sufficient water in the water receiving pan 30, it is necessary to replenish water in the water receiving pan 30 in time. By dissipating heat through water cooling, the heat radiation and heat convection between the condenser 10 and the air are changed to heat conduction between the condenser 10 and water. At the same time, the evaporation of water can be used to absorb heat, and the latent heat of water phase change can be exerted, which greatly improves the heat exchange efficiency and heat exchange amount of the condenser 10 and improves the overall refrigeration performance of the refrigerator.

[0034] In the prior art, the condenser 10 is not disposed in the water receiving pan 30 for water cooling. The water in the water receiving pan 30 will be partially evaporated due to the high temperature environment and strong convection heat dissipation, but the evaporation amount is small and no additional water is required.

[0035] After that, the refrigerant liquid is throttled and depressurized by the capillary tube, and is transformed into a low-temperature, low-pressure liquid. It then enters the evaporator and is transformed into a low-temperature, low-pressure gas, which absorbs heat from the outside world to achieve the refrigeration of the refrigerator. Finally, the low-temperature, low-pressure refrigerant gas reenters the compressor and is compressed into a high-temperature, high-pressure gas, and the refrigeration cycle continues.

[0036] Preferably, the water receiving pan 30 is connected to the evaporator through a pipeline to receive defrost water from the evaporator. The water receiving pan is set with a minimum liquid level A, and the condenser 10 is lower than the minimum liquid level A. The minimum liquid level is also higher than the position of half the height of the water receiving pan 30, so that the condenser 10 can be completely immersed in the water receiving pan 10 to ensure the heat dissipation effect.

[0037] During the operation of the refrigerator, when the air in the refrigerator passes through the surface of the evaporator, the moisture in the air will condense on the surface of the evaporator. Since the temperature of the evaporator is too low, a frost layer will form after a period of time. In order to defrost the refrigerator, it is necessary to install a heating device close to the outer surface of the evaporator, and use the heat generated by the heating device to defrost the evaporator.

[0038] In this case, the defrost water generated needs to be discharged in time, and usually the defrost water is led to the water receiving pan 30 by setting a water receiving pipe, and the water receiving pan 30 is set at the compressor, and the water in the water receiving pan 30 is evaporated by the high temperature environment and strong convection heat dissipation at the compressor to prevent overflow. In this case, the condenser 10 is set in the water receiving pan 30 at the same time, which can receive the defrost water of the evaporator on the one hand, and accelerate the heat dissipation on the other hand, and the water in the water receiving pan 30 will not overflow.

[0039] Preferably, the condenser is a phase-change heat storage microchannel condenser, and the water receiving tray 30 itself is not large in size. This type of condenser is small in size and can be easily loaded into the water receiving tray 30 .

[0040] Preferably, the water control device 50 includes a sensor 51, a solenoid valve 52, and a control board 53 electrically connected to the solenoid valve 52 and the sensor 51, so as to collaboratively control the input water volume of the external water source.

[0041] The sensor 51 is disposed in the water receiving tray 30 . The sensor 51 is preferably a liquid level sensor, which directly monitors the liquid level information in the water receiving tray 30 , improves the heat dissipation efficiency and ensures the safety of water cooling. The sensor 51 is electrically connected to the control board 53 to transmit signals.

[0042] One end of the solenoid valve 52 is connected to an external water source, usually connected to a tap water pipe, and the other end is connected to the water receiving tray 30 to open or close the water input from the external water source to the water receiving tray, so that the water receiving tray 30 can be selectively connected to the external water source. The solenoid valve 52 is also electrically connected to the control board 53 to transmit signals.

[0043] The control panel 53 is used to receive the liquid level information from the sensor 51 and control the opening and closing of the solenoid valve 52 according to the liquid level information to facilitate the timely transmission and sharing of information. The control panel 53 is also used to control the operation time of the solenoid valve 52 to more accurately control the amount of water input from the external water source to the water receiving tray 30.

[0044] Preferably, the water receiving pan 30 is set with a maximum liquid level height B, the solenoid valve 52 is opened to supply water to the water receiving pan 30, the sensor 51 monitors the water level in the water receiving pan 30, and when the water level in the water receiving pan 30 reaches the maximum liquid level height B, the solenoid valve 52 is closed. The maximum liquid level height B is close to the opening of the water receiving pan 30, and a certain water level margin is left to ensure that when the water level in the water receiving pan 30 is at the maximum liquid level height B, the water receiving pan 30 can receive defrost water while dissipating heat and evaporating water, and the water level in the water receiving pan 30 will not overflow abnormally, which will not affect the acceptance of defrost water while ensuring the safety of water cooling.

[0045] Specifically, when the liquid level sensor 51 detects that the liquid level is at the highest liquid level height B, it feeds back to the control board 53, and the control board 53 controls the solenoid valve 52 to close; or when the liquid level sensor 51 detects that the liquid level is at the lowest liquid level height A, it feeds back to the control board 53, and the control board 53 can control the solenoid valve 52 to open.

[0046] Specifically, when the power is turned on for the first time, the solenoid valve 52 is opened, and the liquid level sensor 51 detects the water level in the water receiving tray 30. When the water level reaches the set maximum liquid level height B, the solenoid valve 52 is closed.

[0047] The water receiving pan 30 is also provided with the above-mentioned minimum liquid level height A. When the sensor 51 detects that the water level in the water receiving pan 30 is at the minimum liquid level height A and the compressor is started, the solenoid valve 52 is opened; the greater the speed of the compressor, the longer the operation time of the solenoid valve 52. The water control device 50 controls the operation time of the solenoid valve according to the speed of the compressor to obtain a suitable amount of water.

[0048] Specifically, after the water level in the water receiving pan 30 reaches the set maximum liquid level height B, the solenoid valve 52 is closed, and the external water source stops supplying water, but the water in the water receiving pan 30 is used for water cooling evaporation and heat dissipation, and is continuously consumed. When the sensor 51 detects that the water level in the water receiving pan 30 is at the minimum liquid level height A, and at this time the compressor starts to compress the gas, high-temperature gas will be generated, and the condenser 10 will also work to convert the high-temperature gas into low-temperature liquid to dissipate heat. In this way, a large amount of water is needed to absorb heat, and the solenoid valve 52 is opened, and the external water source starts to supply water.

[0049] Preferably, the water collecting pan 30 and the compressor are arranged in the compressor compartment. After the compressor is started, it will compress and generate high-temperature gas and transmit it to the condenser 10. The condenser 10 will release a large amount of heat when cooling the gas. Therefore, it can be understood that the ambient temperature in the compressor compartment is relatively high. In the actual process, a temperature sensor and / or a pressure sensor can be further arranged to accurately know the temperature and pressure in the compressor compartment. At the same time, the temperature sensor and / or the pressure sensor are electrically connected to the control board 53 to timely control the operating time of the solenoid valve 52, thereby controlling the input water volume.

[0050] When the compressor is set to a specific speed value, the environment of the compressor compartment has a corresponding water evaporation rate W. Without considering the influence of other factors, it can be considered that the water receiving pan 30 has the corresponding same water evaporation rate W. Therefore, the time T2 when the solenoid valve 52 is opened and running is configured as W*T1=Z*T2, where the compressor running time is T1 and the water flow rate of the solenoid valve 52 is Z. It is ensured that the amount of water input by the solenoid valve 52 is equal to the amount of water evaporated from the water receiving pan 30, and that there is a suitable amount of water in the water receiving pan 30.

[0051] It is understandable that the purpose of controlling the operating time of the solenoid valve 52 is to control the amount of water input into the water receiving tray 30 through the solenoid valve 52. In other embodiments, the water volume can also be adjusted by adjusting the flow rate of the solenoid valve 52, or the input water volume can be controlled by other water control devices.

[0052] Preferably, the greater the speed of the compressor, the higher the temperature of the compressor compartment, and the faster the corresponding water evaporation rate W, wherein the water evaporation rate W=K(Pw-Pa) / L, where K is a proportional constant, Pw is the saturated vapor pressure of water, Pa is the ambient vapor pressure, and L is the heat of evaporation of water. The water volume can be controlled more accurately according to the evaporation rate of water at different temperatures and pressures in the compressor compartment environment.

[0053] Specifically, the compressor speed can generally be set to less than 46 rpm, 46 rpm-72 rpm, 72 rpm-128 rpm, or greater than 128 rpm as needed. The ambient temperature and / or pressure in the compressor compartment, that is, around the water receiving pan 30, can be obtained by a sensor to obtain the water evaporation rate W.

[0054] The present invention also protects a refrigeration device, such as a refrigerator, which has a refrigeration system 100 as described in any of the above technical solutions to realize a refrigeration cycle. The refrigerator includes a box body, and the refrigeration system 100 is arranged as a whole in the box body. It is connected to an external water source through a water pipe to replenish the water in the water receiving tray 30, such as an external tap water pipe.

[0055] The beneficial effects of the present invention are as follows: the condenser 10 is arranged in the water receiving tray 30, and the water receiving tray 30 is connected to an external water source for water cooling of the condenser 10, thereby increasing the heat dissipation effect and improving the refrigeration performance of the refrigerator, and does not occupy more space in the refrigerator and has little impact on the refrigerator; the water control device 50 controls the amount of water added to the water receiving tray 30 from the external water source according to the amount of water evaporation in the water receiving tray 30 to ensure that the water receiving tray 30 always has an appropriate amount of water; the liquid level sensor 51 detects the water level of the water receiving tray 30 to ensure the safety of water cooling; the water control device 50 controls the operating time of the solenoid valve 52 to more accurately control the input water amount of the solenoid valve 52.

[0056] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0057] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A refrigeration system, characterized in that: The refrigeration system comprises a condenser and a water receiving tray, wherein the condenser is arranged in the water receiving tray, and the water receiving tray can be selectively connected to an external water source; the refrigeration system comprises a water control device connected to the water receiving tray and the external water source, and the water control device is used to control the amount of water input from the external water source to the water receiving tray.

2. The refrigeration system according to claim 1, characterized in that: The refrigeration system includes an evaporator. The water receiving pan is connected to the evaporator through a pipeline to receive defrost water from the evaporator. The water receiving pan is set with a minimum liquid level height, and the condenser is lower than the minimum liquid level height.

3. The refrigeration system according to claim 1, characterized in that: The water control device includes a sensor and a solenoid valve. The sensor is arranged in the water receiving tray to monitor the change of the liquid level in the water receiving tray. One end of the solenoid valve is connected to an external water source, and the other end is connected to the water receiving tray to open or close the water input from the external water source to the water receiving tray.

4. The refrigeration system according to claim 3, characterized in that: The water receiving tray is set with a maximum liquid level height, the solenoid valve is opened to supply water to the water receiving tray, the sensor monitors the water level in the water receiving tray, and when the water level in the water receiving tray reaches the maximum liquid level height, the solenoid valve is closed.

5. The refrigeration system according to claim 3, characterized in that: The refrigeration system includes a compressor, and the condenser receives high-temperature gas from the compressor and condenses the high-temperature gas into a low-temperature liquid; the water receiving pan is set with a minimum liquid level height, and when the sensor detects that the water level in the water receiving pan is at the minimum liquid level height and the compressor is started, the solenoid valve opens; the higher the speed of the compressor, the longer the solenoid valve operates.

6. The refrigeration system according to claim 5, characterized in that: The water receiving pan and the compressor are arranged in the compressor compartment. When the compressor is set to a specific speed value, the environment of the compressor compartment has a corresponding water evaporation rate W. The time T2 for the solenoid valve to open and run is configured as W*T1=Z*T2, wherein the compressor running time is T1, and the water flow rate of the solenoid valve is Z.

7. The refrigeration system according to claim 6, characterized in that: The greater the speed of the compressor, the higher the temperature of the compressor compartment, and the faster the corresponding water evaporation rate. The water evaporation rate W = K (Pw-Pa) / L, where K is a proportional constant, Pw is the saturated vapor pressure of water, Pa is the ambient vapor pressure, and L is the heat of evaporation of water.

8. The refrigeration system according to claim 3, characterized in that: The water control device includes a control board electrically connected to the electromagnetic valve and the sensor. The control board is used to receive the liquid level information of the sensor and control the opening and closing of the electromagnetic valve according to the liquid level information.

9. The refrigeration system according to claim 3, characterized in that: The condenser is a phase-change thermal storage microchannel condenser, and the sensor is a liquid level sensor.

10. A refrigerator comprising the refrigeration system according to any one of claims 1 to 9.

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