Refrigeration module and refrigeration equipment

Abstract

The utility model discloses a refrigeration module and refrigeration equipment, the refrigeration module comprises a condenser, an evaporator, a liquid storage box and a spraying defrosting module, the condenser is arranged in the liquid storage box, the spraying defrosting module is used for pumping liquid in the liquid storage box to spray to the evaporator, the evaporator is arranged in a heat preservation box, the heat preservation box is provided with an air supply port and an air return port, and the air supply port and the air return port are communicated. The evaporator is located between the air supply opening and the air return opening, and a first fan used for driving air to flow to the air supply opening and / or a second fan used for driving the air to flow to the evaporator are / is installed in the heat preservation box. The evaporator is arranged in the heat preservation box, high-temperature water generated by absorbing heat of the condenser is used for spraying the evaporator for defrosting, heat is prevented from being dissipated into the compartment, and temperature fluctuation of the compartment is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a refrigeration module and refrigeration equipment with a modular design. Background Art

[0002] With the development of science and technology and the improvement of living standards, refrigerators and other refrigeration equipment are widely used in different occasions to keep food fresh and fresh. The refrigerator is cooled by the evaporator, and the surface temperature of the evaporator is relatively low. When the humidity inside the refrigerator is high, the moisture in the air will condense into frost on the surface of the evaporator. As time goes by, the frost layer will gradually thicken, which will not only occupy the effective heat exchange area of ​​the evaporator surface, but also form an insulation layer between the frost layer and the evaporator, resulting in a decrease in the heat exchange efficiency of the evaporator.

[0003] In order to maintain the refrigeration efficiency and extend the service life of the refrigerator, most refrigerators are equipped with automatic defrost systems. These systems will automatically start when the frost accumulates to a certain level, melt the frost and discharge it outside the refrigerator by heating the evaporator or introducing high-temperature refrigerant.

[0004] The mainstream defrosting method for refrigerators on the market is electric defrosting, which uses the heat radiation generated by the electric heating tube to melt the frost or ice condensed on the evaporator. However, since this method requires the electric heating tube to continuously heat the evaporator and the surrounding air during the defrosting process, it is easy to cause the compartment temperature to rise too high, which is time-consuming and inefficient. Especially for application scenarios with high moisture content, defrosting is more frequent, resulting in high power consumption of the refrigerator and large fluctuations in compartment temperature, which seriously affects the user experience.

[0005] Therefore, how to design a refrigeration module and refrigeration equipment that can effectively reduce the temperature fluctuation of the compartment is a technical problem that needs to be solved urgently in the industry. Utility Model Content

[0006] In order to solve the defect that defrosting of existing refrigeration equipment causes large temperature fluctuations in the compartment, the utility model proposes a modularly designed refrigeration module and refrigeration equipment, arranges the evaporator in an insulation box, and uses high-temperature water generated by absorbing the heat of the condenser to spray the evaporator for defrosting, thereby preventing heat from escaping into the compartment and effectively reducing the temperature fluctuations in the compartment.

[0007] The technical solution adopted by the utility model is to design a refrigeration module, including: a condenser, an evaporator, a liquid storage tank and a spray defrost module, the condenser is arranged in the liquid storage tank, the spray defrost module is used to extract the liquid in the liquid storage tank and spray it onto the evaporator, the evaporator is arranged in an insulation box, and the insulation box is provided with an air supply port and an air return port.

[0008] Furthermore, a first fan for driving air to flow toward the air supply port and / or a second fan for driving air to flow toward the evaporator is installed in the thermal insulation box.

[0009] Furthermore, the first fan is installed at the air supply port, and the second fan is directly opposite to the center position of the evaporator.

[0010] Furthermore, the first fan is a cross-flow fan, and the second fan is an axial-flow fan.

[0011] Furthermore, the liquid storage tank includes: a condensation area, the condenser is arranged in the condensation area, and the condensation area is also equipped with a stirring fan, and the stirring fan drives the liquid in the condensation area to flow when it is turned on.

[0012] Furthermore, the liquid storage tank also includes: a water collection area, the water collection area is provided with a reflux port connected to the condensation area, and the insulation box is provided with a water receiving tank located below the evaporator, and the water in the water receiving tank is led to the water collection area through a reflux pipe.

[0013] Furthermore, the liquid storage tank further comprises: a water storage area, wherein the water storage area is provided with a water inlet connected to the condensation area.

[0014] Furthermore, the water collection area and the water storage area are higher than the condensation area, and the reflux port and the water injection port are both equipped with valves.

[0015] The utility model also proposes a refrigeration device, comprising: a storage box and the above-mentioned refrigeration module, the thermal insulation box is located outside the storage box, the storage box is provided with a first main air outlet connected to the air supply outlet and a second main air outlet connected to the return air outlet; wherein, the first main air outlet and / or the air supply outlet are equipped with a supply air valve, and the second main air outlet and / or the return air outlet are equipped with a return air valve.

[0016] Furthermore, a temperature sensor is provided in the heat preservation box, and the air supply valve and the air return valve are both controlled by the temperature sensor.

[0017] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0018] 1. Place the evaporator in the insulation box, separate the evaporator from the required refrigeration environment, and use the high-temperature water generated by the condenser to spray the evaporator surface for defrosting to prevent heat from escaping into the compartment and effectively reduce the temperature fluctuation of the compartment;

[0019] 2. A fan driving air flow is installed in the insulated box. After defrosting, the fan can be used to dry the evaporator to prevent the residual water on the surface from condensing into ice crystals or ice layers after the evaporator resumes refrigeration, which affects the heat exchange efficiency.

[0020] 3. A stirring fan is provided in the condensation area to stir the liquid flow in the condensation area to speed up the heat exchange rate of the condenser and improve the condensation efficiency;

[0021] 4. The air supply and return air outlets of the insulation box are closed when the evaporator is defrosted, which completely separates the high-temperature defrosting environment in the insulation box from the low-temperature storage environment in the storage box, further avoiding the influence of hot air during defrosting on the low-temperature environment in the storage box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is described in detail below with reference to the embodiments and drawings, wherein:

[0023] Figure 1 It is a schematic diagram of the refrigeration module of the utility model;

[0024] Figure 2 It is the internal schematic diagram of the thermal insulation box of the utility model;

[0025] Figure 3 It is the internal schematic diagram of the liquid storage tank of the utility model; Description of the drawings:

[0027] 1. Insulation box; 11. Evaporator; 12. Air supply port; 13. Air return port; 14. Defrost pipe; 15. Reflux pipe;

[0028] 2. Liquid storage tank; 21. Condensation area; 22. Water collection area; 23. Water storage area; 24. Reflux port; 25. Water injection port. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] like Figure 1 , 2 As shown, the refrigeration module proposed by the utility model includes: a condenser, an evaporator, a liquid storage tank 2 and a spray defrost module. The condenser is arranged in the liquid storage tank 2. The liquid in the liquid storage tank 2 soaks the condenser to absorb the heat of the refrigerant in the condenser to generate high-temperature water. The spray defrost module is used to extract the liquid in the liquid storage tank 2 and spray it onto the evaporator 11. The evaporator 11 is arranged in the insulation box 1. The insulation box 1 is provided with an air supply port 12 and a return air port 13. The evaporator 11 is located between the air supply port 12 and the return air port 13.

[0031] The advantage of this design is that the high-temperature water in the liquid storage tank 2 is used to spray the surface of the evaporator 11 for defrosting. The high-temperature water absorbs the coldness of the frost layer and quickly cools down and slides downward, gathering under the evaporator 11. The defrosting process diffuses less heat to the surrounding area, and the insulation box 1 can isolate the evaporator 11 from the low-temperature storage environment of the refrigeration equipment, preventing heat from entering the room, and effectively reducing the temperature fluctuation of the room.

[0032] The spray defrost device can adopt a conventional spray device. For example, the spray defrost device includes a water pump, a defrost pipe 14 and a plurality of nozzles. One end of the defrost pipe 14 is connected to the water pump and extends into the liquid storage tank 2. The other end of the defrost pipe 14 is provided with a spray section. The spray section is located at the top of the evaporator 11. The nozzles are installed on the spray section, and the nozzles are evenly arranged along the length direction of the top surface of the evaporator 11 to increase the contact area between the high-temperature water and the evaporator 11 and improve the defrost efficiency.

[0033] In some embodiments of the utility model, a first fan for driving air to flow toward the air outlet 12 and / or a second fan for driving air to flow toward the evaporator 11 are installed in the thermal insulation box 1. The advantage of designing the first fan is to guide the air in the thermal insulation box 1 to be sent to the storage box in a stable and orderly manner. Under refrigeration operation, the air supply state can be accurately adjusted by controlling the first fan so that the environment in the storage box meets the use requirements. The advantage of designing the second fan is that the airflow can blow directly to the evaporator 11. After the spraying is finished, the second fan can be turned on to blow off and dry the water droplets on the surface of the evaporator 11, so as to avoid the condensation of the residual water on the surface of the evaporator 11 into ice crystals or ice layers after the evaporator 11 resumes refrigeration, thereby affecting the heat exchange efficiency.

[0034] In some embodiments of the utility model, the second fan is directly opposite the center of the evaporator 11, and the first fan is installed at the air supply port 12. Since the second fan is only turned on during the defrosting stage, there is no special requirement for the installation position of the second fan. However, from the aspects of the installation space in the insulation box 1, the air flow stability, etc., the second fan is preferably installed at the return air port 13.

[0035] Since the second fan is directly facing the center of the evaporator 11, it can ensure that the air flow is directly and evenly blown to the surface of the evaporator 11, which helps to reduce the dead corners formed on the evaporator surface due to poor air flow, thereby avoiding the difficulty in drying the water accumulation area formed after defrosting. The first fan is directly installed at the air supply port 12, which can ensure that the processed air is directly sent to the storage box, reducing the resistance and loss of air flow, improving the air supply efficiency, and the air flow rate and flow rate of the air supply port 12 can be better controlled.

[0036] Based on the above embodiment, the first fan can be a cross-flow fan. The working principle of the cross-flow fan is that when the airflow passes through the fan, it bypasses the impeller along a spiral path, similar to rotating on a spiral staircase, and then is discharged from the axial direction in the same direction, which can achieve a higher air supply pressure, help to concentrate the air to the air supply port 12, so that the environment in the storage box can quickly meet the use requirements. In addition, the second fan can be an axial flow fan. The air in the axial flow fan moves along a simple path parallel to the rotating axis of the impeller blades. The axial flow fan can achieve a higher air flow rate, which helps to increase the air drying speed of the evaporator 11 surface.

[0037] like Figure 1 , 3 As shown, in some embodiments of the present invention, the liquid storage tank 2 includes: a condensation area 21, a condenser is arranged in the condensation area 21, and a stirring fan is also installed in the condensation area 21. When the stirring fan is turned on, the liquid in the condensation area 21 is driven to flow. The advantage of this design is that the operation of the stirring fan can enhance the fluidity and convection effect of the water flow, so that heat is transferred from the refrigerant to the water faster, avoiding the temperature of the condensation area 21 from being too high, and improving the condensation efficiency.

[0038] In actual use, the stirring fan is generally kept in a closed state. A first temperature sensor is provided at the refrigerant outlet of the condenser. When the temperature value detected by the first temperature sensor is continuously higher than the first set value, the stirring fan is turned on to enhance the heat dissipation of the condenser. When the temperature value detected by the first temperature sensor is continuously lower than the second set value, the stirring fan is turned off to reduce the power consumption of the refrigeration module. The second set value is lower than the first set value.

[0039] In some embodiments of the utility model, the liquid storage tank 2 further includes: a water collection area 22, the water collection area 22 is provided with a reflux port 24 connected to the condensation area 21, and the heat preservation box 1 is provided with a water receiving tank located below the evaporator 11, and the water in the water receiving tank is led to the water collection area 22 through the reflux pipe 15. The advantage of this design is that the low-temperature defrost water is collected by the water collection area 22, and after the low-temperature defrost water is sent to the condensation area 21, the low-temperature defrost water and its cooling capacity can be recovered, thereby improving the utilization rate of water and energy.

[0040] On this basis, the liquid storage tank 2 also includes: a water storage area 23, and the water storage area 23 is provided with a water injection port connected to the condensation area 21. Since the condenser is water-cooled, the water in the condensation area 21 is lost quickly. The design of the water storage area 23 can replenish water to the condensation area 21 in time, so that the condenser is always immersed in water, thereby improving the safety and reliability of the refrigeration module.

[0041] In actual use, a liquid level sensor can also be designed in the water storage area 23. The liquid level sensor is connected to a prompt device. The prompt device can be a light-emitting device or a sound-emitting device. When the water level in the water storage area 23 is lower than the set liquid level lower limit value, the prompt device sends an alarm signal to the outside to prompt the user to add water. The set liquid level lower limit value here is designed for the water storage area 23.

[0042] Based on the fact that the liquid storage tank 2 is provided with a water collection area 22 and a water storage area 23, the preferred solution is that the water collection area 22 and the water storage area 23 are higher than the condensation area 21, a reflux valve is provided at the reflux port 24, the reflux port 24 is located at the bottom of the water collection area 22, when the reflux port 24 is opened, the water in the water collection area 22 flows into the condensation area 21 by itself under the action of gravity, a water injection valve is provided at the water injection port 25, the water injection port 25 is located at the bottom of the water storage area 23, when the water injection port 25 is opened, the water in the water storage area 23 flows into the condensation area 21 by itself under the action of gravity, and no additional power parts are required to be designed for the water collection area 22 and the water storage area 23, the structure is simple, and energy consumption is effectively reduced.

[0043] In actual use, the control logic of the reflux valve and the water injection valve can be designed as follows: when the defrosting is completed or the water level in the condensation zone 21 is lower than the set liquid level lower limit, the reflux valve is opened to allow the water in the water collection zone 22 to flow back to the condensation zone 21 until the water level in the condensation zone 21 rises to the set liquid level upper limit. If there is no water in the water collection zone 22 or the water level in the condensation zone 21 is lower than the set liquid level lower limit, the water injection valve is opened to send the water in the water storage zone 23 to the condensation zone 21 until the water volume in the condensation zone 21 rises to the set liquid level upper limit. The set liquid level lower limit and the set liquid level upper limit here are both designed for the condensation zone 21.

[0044] The utility model also provides a refrigeration device, which includes but is not limited to a refrigerator.

[0045] like Figure 1 As shown, specifically, the refrigeration equipment includes: a storage box and the above-mentioned refrigeration module, the heat preservation box 1 is located outside the storage box, the storage box is provided with a first main air port and a second main air port, the first main air port is connected to the air supply port 12, the second main air port is connected to the return air port 13, the first main air port and / or the air supply port is equipped with an air supply valve, and the second main air port and / or the return air port is equipped with a return air valve. In actual use, in order to simplify the structure, only the first main air port or the air supply port 12 needs to be equipped with an air supply valve, and similarly, only the second main air port or the return air port 13 needs to be equipped with a return air valve.

[0046] When the air supply valve and the return air valve are both open, the first main air port is connected to the air supply port 12, the second main air port is connected to the return air port 13, the storage box is connected to the heat preservation box 1, the first fan at the air supply port 12 is working, and the air in the storage box enters the heat preservation box 1 from the return air port 13, flows through the evaporator 11, and is sent to the storage box through the air supply port 12. When the air supply valve and the return air valve are both closed, the first main air port is isolated from the air supply port 12, the second main air port is isolated from the return air port 13, and the storage box is isolated from the heat preservation box 1.

[0047] The advantage of this design is that the main air outlet is closed or opened by the air valve, which is equivalent to closing or opening the air supply outlet 12 and the air return outlet 13 of the heat preservation box 1, so as to connect or isolate the storage box and the heat preservation box 1. In particular, when the evaporator 11 is defrosted, the air supply outlet 12 and the air return outlet 13 are closed, and the defrosting high temperature environment in the heat preservation box 1 is completely separated from the low temperature storage environment in the storage box, further avoiding the influence of the hot air during defrosting on the low temperature environment in the storage box.

[0048] A temperature sensor is provided in the thermal insulation box 1, and the air supply valve and the air return valve are both controlled by the temperature sensor. The advantage of this design is that the switch status of the air supply valve and the air return valve can be automatically controlled. In actual use, the control logic of the air supply valve and the air return valve can be designed as follows: after defrosting, the refrigeration equipment operates in a cooling mode, and the air supply valve and the air return valve remain closed until the actual temperature in the thermal insulation box 1 is lower than the actual temperature in the storage box, and then the air supply valve and the air return valve are opened, which is equivalent to pre-cooling the thermal insulation box 1 to prevent the high-temperature air in the thermal insulation box 1 from flowing into the storage box after defrosting.

[0049] For ease of understanding, an application example of the present invention is described in detail below.

[0050] When the refrigeration equipment is in refrigeration operation, the compressor is turned on, and after the refrigerant is discharged from the compressor, it flows through the condenser, the throttling element, and the evaporator 11 in sequence, and then returns to the compressor, forming a refrigerant cycle. During the refrigeration operation, the supply air valve and the return air valve are both powered off, the supply air valve and the return air valve are opened, the storage box and the insulation box 1 remain connected, and the first fan at the air supply port 12 starts running. Under the pressure difference of the first fan, the air in the storage box passes through the return air port 13, flows through the surface of the evaporator 11 to cool down, and then flows back to the storage box through the air supply port 12, forming an air cycle, thereby maintaining the temperature in the storage box at the set storage low temperature environment.

[0051] During the refrigeration operation, the stirring fan remains in the off state. When the temperature value detected by the first temperature sensor at the refrigerant outlet of the condenser is continuously higher than the first set value (for example, the temperature value is higher than 45°C and maintained for 1 minute), it indicates that the condenser heat dissipation is poor. At this time, the stirring fan is turned on to enhance the heat dissipation of the condenser. Until the temperature value detected by the first temperature sensor at the refrigerant outlet of the condenser is continuously lower than the second set value (for example, the temperature value is lower than 43°C and maintained for 1 minute), it appears that the condenser heat dissipation is good. At this time, the stirring fan is turned off.

[0052] In addition, during the refrigeration operation, when the water level in the condensation area 21 is lower than the set liquid level lower limit, the water in the water collection area 22 will flow back to the condensation area 21 first. If there is no water in the water collection area 22 and the water level in the condensation area 21 has not risen to the set liquid level upper limit, the water injection valve between the water storage area 23 and the condensation area 21 will be powered on and opened. Due to the height difference, the water in the water storage area 23 will flow into the condensation area 21 under the action of gravity. When the water level in the condensation area 21 reaches the set liquid level upper limit, the water injection valve will be powered off and closed.

[0053] Furthermore, during the refrigeration operation, the accumulated operating time of the timing compressor or the temperature value detected by the second temperature sensor detecting the refrigerant outlet of the evaporator is lower than the third set value, indicating that the heat exchange efficiency of the evaporator 11 is low and there is a certain amount of frost on the surface of the evaporator 11, which may affect the stable operation of the refrigeration equipment. At this time, the evaporator 11 needs to be defrosted.

[0054] After determining that the evaporator 11 needs to be defrosted, the refrigeration equipment enters the pre-defrosting preparation, the compressor starts running or maintains running, at this time the stirring fan is powered off or remains off, and the compressor stops running after the temperature in the storage box drops to the minimum safety limit. In this way, during the defrosting period, the temperature in the storage box rises less than the set storage temperature, and the storage of items is reliable. After the compressor stops running, the supply air valve and the return air valve are energized, the supply air valve and the return air valve are closed, the storage box is separated from the insulation box 1, and the spray defrost device extracts high-temperature condensed water from the condensation area 21 for defrosting the surface of the evaporator 11.

[0055] The spray defrost device first sprays a small amount of water for a period of time, and then sprays a large amount of water for a period of time (for example, a small amount of water sprays for 1 minute, and a large amount of water sprays for 3 minutes) to increase the mass of the frost layer, and uses the frost layer's own gravity and the traction of the water flow to make the frost layer fall off the surface of the evaporator 11. Then turn on the second fan directly opposite the evaporator 11 for a period of time (for example, 1 minute) to further promote the shedding of the frost layer on the surface of the evaporator 11. After that, spray a small amount of water for a period of time (for example, 1 minute) to remove the debris frost on the surface. Finally, the spray defrost device stops working, and the second fan directly opposite the evaporator 11 is turned on to blow directly to the evaporator 11 for a period of time (for example, 3 minutes) to dry the water droplets on the surface of the evaporator 11 to prevent the refrigeration equipment from re-cooling and the water droplets remaining on the surface of the evaporator 11 from forming ice crystals.

[0056] During the defrosting process, the defrosting water and the condensed water for spraying drip into the water receiving tank at the bottom of the evaporator 11, and flow into the water collecting area 22 through the return pipe 15. After the defrosting is completed, the return valve between the water collecting area 22 and the condensation area 21 is powered on and opened. Under the action of gravity, the low-temperature defrosting water flows back into the condensation area 21 to recover the defrosting water cooling capacity. When the water level in the condensation area 21 reaches the set liquid level upper limit, the return valve is powered off and closed to prevent the water in the condensation area 21 from overflowing, or when the defrosting water in the water collecting area 22 is exhausted, the return valve is also powered off and closed.

[0057] When the defrost water in the water collection area 22 runs out or the water level in the condensation area 21 reaches the set upper limit of the liquid level, the compressor starts to run. At this time, the air supply valve and the return air valve are still powered on, the air supply valve and the return air valve are closed, the storage box is separated from the insulation box 1, and the evaporator 11 provides cold capacity to pre-cool the insulation box 1 to prevent the high-temperature air in the insulation box 1 from flowing into the storage box. When the actual temperature in the insulation box 1 is lower than the actual temperature in the storage box, the air supply valve and the return air valve are both powered off, the storage box and the insulation box 1 are connected, and the first fan at the air supply port 12 is turned on at this time. When the actual temperature in the storage box drops to the set storage temperature, the compressor stops running.

[0058] The utility model utilizes water to cool the condenser. When the defrosting condition is met, the compressor is stopped, the air supply port 12 and the air return port 13 are closed, the storage box and the heat preservation box 1 are separated, and the high-temperature condensed water is sprayed on the surface of the evaporator 11. After defrosting is completed, the compressor is turned on, the storage box and the heat preservation box 1 are connected, and the condenser is cooled by the low-temperature defrosting water, so as to achieve rapid defrosting, avoid large temperature fluctuations in the storage box, and recover the cooling capacity of the defrosting water to improve the refrigeration efficiency.

[0059] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. When the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof. The order of execution of actions, steps, etc. in the devices and methods shown in the specification and the accompanying drawings can be implemented in any order as long as there is no special explicit limitation on the order and the output of the previous processing is not used in the subsequent processing. Similar sequential terms used for the convenience of description do not mean that they must be implemented in such an order.

[0060] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A refrigeration module, characterized in that: include: A condenser, an evaporator, a liquid storage tank and a spray defrost module, wherein the condenser is arranged in the liquid storage tank, and the spray defrost module is used to extract liquid in the liquid storage tank and spray it onto the evaporator; The evaporator is arranged in a heat preservation box, and the heat preservation box is provided with an air supply port and an air return port.

2. The refrigeration module according to claim 1, characterized in that: The heat preservation box is installed with a first fan for driving air to flow toward the air supply port and / or a second fan for driving air to flow toward the evaporator.

3. The refrigeration module according to claim 2, characterized in that: The first fan is installed at the air supply port, and the second fan is directly opposite to the center of the evaporator.

4. The refrigeration module according to claim 2, characterized in that: The first fan is a cross-flow fan, and the second fan is an axial-flow fan.

5. The refrigeration module according to any one of claims 1 to 4, characterized in that: The liquid storage tank comprises: a condensation area, the condenser is arranged in the condensation area, and the condensation area is also equipped with a stirring fan, which drives the liquid in the condensation area to flow when it is turned on.

6. The refrigeration module according to claim 5, characterized in that: The liquid storage tank also includes: a water collection area, the water collection area is provided with a reflux port connected to the condensation area, the insulation box is provided with a water receiving tank located below the evaporator, and the water in the water receiving tank is led to the water collection area through a reflux pipe.

7. The refrigeration module according to claim 6, characterized in that: The liquid storage tank further comprises: a water storage area, wherein the water storage area is provided with a water injection port connected to the condensation area.

8. The refrigeration module according to claim 7, characterized in that: The water collection area and the water storage area are higher than the condensation area, and the reflux port and the water injection port are both equipped with valves.

9. Refrigeration equipment, including: A storage box and a refrigeration module according to any one of claims 1 to 8, characterized in that the heat preservation box is located outside the storage box, and the storage box is provided with a first main air outlet connected to the air supply outlet and a second main air outlet connected to the air return outlet; Wherein, the first main air outlet and / or the air supply outlet is equipped with an air supply valve, and the second main air outlet and / or the air return outlet is equipped with a return air valve.

10. The refrigeration device according to claim 9, characterized in that: A temperature sensor is arranged in the heat preservation box, and the air supply valve and the air return valve are both controlled by the temperature sensor.

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