Control method of a refrigeration device

Abstract

A control method of a refrigeration equipment, the refrigeration equipment is equipped with a water box for storing water and a water filling valve for supplying water to the water box, the control method comprises the following steps: S1, obtaining a water filling valve starting signal; S2, after the water filling valve is closed, opening a cooling air door and a cooling fan in a cooling air duct; S3, after the water temperature T3 in the water box reaches a set temperature T1 of cooling water, reducing the opening amount of the cooling air door and the rotating speed of the cooling fan; after obtaining the set temperature of the water in the water box, the output cooling capacity of the cooling air duct is reduced by reducing the opening amount of the cooling air door and the rotating speed of the cooling fan, so that the water temperature in the water box remains unchanged while the energy consumption of the refrigeration equipment is reduced.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment, and more particularly to a control method for refrigeration equipment. Background Technology

[0002] Currently, with the expansion of refrigeration equipment functions, ice-making and chilled water functions are becoming increasingly common. Therefore, refrigeration equipment needs water tanks with a certain water storage capacity. Existing refrigeration equipment cools the water tank by opening a damper to supply air. Because the cooling output from the damper remains constant, once the water temperature in the tank reaches the set temperature, excessive cooling output is used to maintain that temperature, leading to increased energy consumption of the refrigeration equipment. Summary of the Invention

[0003] The purpose of this invention is to provide a control method for refrigeration equipment that reduces energy consumption.

[0004] To achieve one of the above-mentioned objectives, one embodiment of the present invention provides a control method for a refrigeration device, wherein the refrigeration device is provided with a water tank for storing water and a water inlet valve for supplying water to the water tank, and the control method includes the following steps:

[0005] S1. Obtain the water injection valve start signal;

[0006] S2. After the water injection valve is closed, open the cooling damper and cooling fan in the cooling air duct;

[0007] S3. Once the water temperature T3 in the water tank reaches the set temperature T1 of the cooling water, reduce the opening amount of the cooling damper and reduce the speed of the cooling fan.

[0008] As a further improvement of one embodiment of the present invention, the refrigeration equipment includes a cooling chamber that houses a water box. In step S2, after opening the cooling damper and the cooling fan, when the room temperature T2 of the cooling chamber is less than the set temperature T1 of the cooling water, the opening amount of the cooling damper is reduced and the speed of the cooling fan is reduced.

[0009] As a further improvement of one embodiment of the present invention, in step S2, after the water injection valve is closed, when the water temperature T3 in the water box is greater than the set temperature T1, the cooling damper is controlled to open to the maximum opening amount and the cooling fan runs at a constant speed N1. In step S3, after the water temperature T3 in the water box reaches the set temperature T1 of the cooling water, the cooling damper is controlled to open to 10% of the maximum opening amount and the cooling fan runs at a constant speed N7.

[0010] As a further improvement of one embodiment of the present invention, in step S2, when the room temperature T2 of the cooling room is 2°C lower than the set temperature of the cooling water, the cooling damper is controlled to open to 50% of the maximum opening amount, and the cooling fan is operated at a constant speed N2, wherein the speed N7 < speed N2 < speed N1.

[0011] As a further improvement of one embodiment of the present invention, the refrigeration equipment further includes a spray head, a spray fan, and a circulation pump connecting the spray head and the water box, which are disposed on the top of the water box. In step S2, after the water injection valve is closed, the circulation pump and the spray fan are turned on. In step S3, after the water temperature T3 in the water box reaches the set temperature T1 of the cooling water, the circulation pump and the spray fan are turned off.

[0012] As a further improvement of one embodiment of the present invention, in step S2, after turning on the circulating pump and the spray fan, when the room temperature T2 of the cooling room is less than the set temperature T1 of the cooling water, the speed of the circulating pump and the spray fan is reduced.

[0013] As a further improvement of one embodiment of the present invention, in step S2, after the water injection valve is closed, when the water temperature T3 in the water box is greater than the set temperature T1, the circulating pump is controlled to run at a constant speed N3 and the spray fan is controlled to run at a constant speed N4. When the room temperature T2 of the cooling room is lower than the set temperature of the cooling water by 2°C, the circulating pump is controlled to run at a constant speed N5 and the spray fan is controlled to run at a constant speed N6, wherein the speed N5 < the speed N3 and the speed N6 < the speed N4.

[0014] As a further improvement of one embodiment of the present invention, the refrigeration equipment further includes a housing and a door pivotally connected to the housing. The cooling chamber is disposed on the door. In step S2, after the water injection valve is closed, the door is found to be in a closed state, and the cooling damper and cooling fan are opened.

[0015] As a further improvement of one embodiment of the present invention, the cooling air duct is disposed in the cooling room, and the refrigeration equipment further includes a cooling evaporator disposed in the cooling air duct. In step S2, after obtaining that the door is in a closed state for a preset time, the cooling air door and the cooling fan are opened.

[0016] As a further improvement of one embodiment of the present invention, the refrigeration equipment also includes a level gauge installed in the water box. In step S1, after obtaining the water injection valve start signal, the water injection valve is opened. After obtaining the value of the level gauge and reaching the preset level value, the water injection valve is closed.

[0017] Compared with the prior art, in the embodiments of the present invention, after the water temperature in the water box reaches the set temperature, the output cooling capacity of the cooling duct is reduced by decreasing the opening amount of the cooling damper and reducing the speed of the cooling fan, so that the water temperature in the water box remains unchanged while reducing the energy consumption of the refrigeration equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the door of the refrigeration equipment in a preferred embodiment of the present invention;

[0019] Figure 2 yes Figure 1 Sectional view at point AA;

[0020] Figure 3 yes Figure 1 A control flowchart of one embodiment of a refrigeration equipment;

[0021] Figure 4 yes Figure 3 Further implementation of the control flowchart for refrigeration equipment;

[0022] Figure 5 yes Figure 3 Further implementation of the control flowchart for refrigeration equipment;

[0023] Figure 6 yes Figure 1 Control flowchart of another embodiment of the refrigeration equipment;

[0024] Figure 7 yes Figure 6 Further implementation of the control flowchart for refrigeration equipment;

[0025] Figure 8 yes Figure 6 Further implementation of the control flowchart for refrigeration equipment;

[0026] Figure 9 This is a further implementation of step S2 in the control flowchart of the refrigeration equipment;

[0027] Figure 10 This is a further implementation of step S1 in the control flowchart of the refrigeration equipment. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0029] It should be understood that terms such as "upper," "lower," "outer," and "inner," used herein to indicate spatial relative position, are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms "spatial relative position" may be intended to include different orientations of the equipment in use or operation other than those shown in the figures.

[0030] refer to Figure 1 and Figure 2 As shown, a preferred embodiment of the present invention provides a refrigeration device, which uses air cooling and can be configured as a refrigerator, freezer, or other refrigeration devices, and is particularly suitable for upright refrigerators.

[0031] Specifically, such as Figure 1 As shown, the refrigeration equipment includes a housing (not shown), a door 70 movably connected to the housing, and a refrigeration system. The refrigeration system includes a compressor, condenser, evaporator, etc., connected by pipes. A cooling chamber 30 is defined on the door 70, and the refrigeration system supplies cooling capacity to the cooling chamber 30.

[0032] Furthermore, the refrigeration equipment also includes a water box 10 disposed within the cooling chamber 30. The water in the water box 10 is cooled by exchanging heat with the interior of the cooling chamber 30. The water box 10 is automatically supplied with water via a water inlet valve (not shown in the figure), thus eliminating the need for manual water filling by the user. Moreover, the water box 10 is equipped with a temperature sensor for acquiring the water temperature and a level gauge for acquiring the liquid level value. The cooling chamber 30 is also equipped with a temperature sensor for acquiring the chamber temperature. Both the temperature sensor and the level gauge monitor the temperature of the water box 10 and the interior of the cooling chamber 30 at preset time intervals. Of course, in some embodiments, the cooling chamber 20 may also be formed within the housing.

[0033] Furthermore, in conjunction with reference Figure 2 As shown, the refrigeration equipment also includes a cooling duct 20 disposed in the cooling chamber 30, and a cooling damper 21, a cooling fan 23, and a cooling evaporator 25 disposed in the cooling duct 20. After the cooling evaporator 25 generates cooling energy, it radiates it into the cooling duct 20. By opening the cooling damper 21 and the cooling fan 23, the cooling energy can be input into the cooling chamber 30 and the water box 10.

[0034] Specifically, the cooling air duct 20 is positioned above the water box 10, and the cooling air damper 21 is directly opposite the top opening of the water box 10. The cooling air damper 21 is configured as an electric damper, allowing the opening amount of the cooling air damper 21 to be adjusted, that is, the cross-sectional area of ​​the cooling air damper 21 can be adjusted proportionally.

[0035] Specifically, the door 70 includes an inner liner forming a cooling chamber and an air duct cover 20a connected to the inner liner and located within the cooling chamber 30. The cooling air duct 20 is formed between the air duct cover 20a and the inner liner. The evaporator 25 is fixedly connected to the air duct cover 20a or the inner liner. The cooling damper 21 and the cooling fan 23 are arranged opposite to each other on the air duct cover 20a to increase the range of cold air flow within the cooling air duct 20, so that the gas flow generated by the cooling fan 23 covers the entire cooling air duct 20.

[0036] Furthermore, the refrigeration equipment also includes a door opening sensor disposed on the door 70 or the cabinet. The door opening sensor is used to detect whether the door 70 is in a closed state or an open state, and the door opening sensor detects the state of the door 70 at preset time intervals.

[0037] Furthermore, the refrigeration equipment also includes a spray head 40, a spray fan 50, and a circulation pump 60 connecting the spray head 40 and the water box 10, all disposed on the top of the water box 10. In this embodiment, the spray head 40 and the spray fan 50 are fixedly connected to the duct cover 20a, with the spray head 40 located directly above the top opening of the water box 10. The circulation pump 60 is fixedly connected to the inner liner of the cooling chamber. The inlet end of the circulation pump 60 draws liquid from the water box 10 using a water pipe extending into the bottom of the water box 10, and the outlet end of the circulation pump 60 delivers the liquid to the spray head 40 using a water pipe extending towards the top of the water box 10. The spray head 40 can refine the liquid delivered by the circulation pump 60, forming a fine spray stream, increasing the contact area between the liquid and the air inside the cooling chamber 30, thereby accelerating the heat exchange between the liquid and the air inside the cooling chamber 30. The spray fan 50 can accelerate the air flow in the cooling chamber 30, thereby accelerating the heat exchange between the liquid flowing out of the spray head 40 and the air inside the cooling chamber 30.

[0038] The present invention also relates to a control method for a refrigeration device. The structure and function of the refrigeration device are as described above and will not be repeated here.

[0039] Reference Figure 3 As shown, the refrigeration equipment provided in the above embodiments relates to a control method for refrigeration equipment. The refrigeration equipment includes a water tank 10 for storing water and a water injection valve for supplying water to the water tank 10. The control method includes the following steps:

[0040] S1. Obtain the water injection valve start signal;

[0041] S2. After the water injection valve is closed, open the cooling damper 21 and the cooling fan 23 in the cooling air duct 20;

[0042] S3. After the water temperature T3 in the water box 10 reaches the set temperature T1 of the cooling water, reduce the opening amount of the cooling damper 21 and reduce the speed of the cooling fan 23.

[0043] In this embodiment, in step S1, after obtaining the water injection valve start signal, the water injection valve is activated to supply water to the water box 10, thereby achieving automatic water injection and improving the user experience.

[0044] Of course, in some embodiments, step S1 may also be to obtain a water temperature adjustment signal, that is, to adjust the set temperature T1 of the water box 10 to be lower or higher according to the user's needs for water temperature.

[0045] In step S2, after water injection is completed, the water injection valve is closed, and then the cooling damper 21 and cooling fan 23 are opened to cool the liquid in the water box 10. Closing the water injection valve and then opening the cooling damper 21 and cooling fan 23 allows the newly injected water in the water box 10 to mix and exchange heat thoroughly with the water already present in the water box 10, thus making the measured water temperature T3 in the water box 10 more accurate. Adjusting the cooling damper 21 and cooling fan 23 based on the value of T3 at this point will be more accurate.

[0046] In this embodiment, the water temperature T3 in the water tank 10 is acquired at preset time intervals. In step S3, after the water temperature T3 in the water tank 10 reaches the set temperature T1 of the cooling water, the cooling capacity required by the refrigeration equipment to maintain the low temperature of the water in the water tank 10 is relatively small. Therefore, the cooling capacity supply is reduced by decreasing the opening amount of the cooling damper 21 and reducing the speed of the cooling fan 23, thereby reducing the energy consumption of the refrigeration equipment. If the water temperature T3 in the water tank 10 does not reach the set temperature T1 of the cooling water, the cooling damper 21 and the cooling fan 23 are controlled to continue to be in their original open state. This is because the more cooling capacity the refrigeration equipment requires to cool the water in the water tank 10, the faster the water temperature in the water tank 10 drops, thereby increasing the cooling speed of the liquid in the water tank 10 and reducing the user's waiting time for cooling water.

[0047] After the water temperature in the water box 10 reaches the set temperature, the output cooling capacity of the cooling duct 20 is reduced by decreasing the opening amount of the cooling damper 21 and reducing the speed of the cooling fan 23. This keeps the water temperature in the water box 10 constant while reducing the energy consumption of the refrigeration equipment.

[0048] Furthermore, the refrigeration equipment includes a cooling chamber 30 that houses the water tank 10. In this embodiment, the set temperature T1 of the cooling water is typically set between 1°C and 9°C. Therefore, the cooling chamber 30 is preferably configured as a cold storage chamber, or located within a variable temperature chamber.

[0049] Furthermore, in conjunction with reference Figure 4As shown, in step S2, after opening the cooling damper 21 and the cooling fan 23, when the room temperature T2 of the cooling chamber 30 is less than the set temperature T1 of the cooling water, the opening amount of the cooling damper 21 is reduced and the speed of the cooling fan 23 is reduced.

[0050] In this embodiment, the room temperature T2 of the cooling chamber 30 is obtained at preset time intervals. When the temperature of the cooling chamber 30 is lower than the set temperature T1 of the cooling water, the water in the water box 10 can exchange heat with the cooling chamber 10 to achieve cooling. Therefore, the cooling capacity supplied to the inside of the water box 10 can be reduced. The output cooling capacity of the cooling duct 20 can be reduced by decreasing the opening amount of the cooling damper 21 and reducing the speed of the cooling fan 23, thereby saving energy consumption of the refrigeration equipment. At the same time, the cooling rate of the cooling water remains unchanged, and the waiting time for the user to receive the cooling water will not increase.

[0051] Furthermore, in conjunction with reference Figure 5 As shown, in step S2, after the water injection valve is closed, when the water temperature T3 in the water box 10 is greater than the set temperature T1, the cooling damper 21 is controlled to open to the maximum opening amount and the cooling fan 23 runs at a constant speed N1. In step S3, after the water temperature T3 in the water box 10 reaches the set temperature T1 of the cooling water, the cooling damper 21 is controlled to open to 10% of the maximum opening amount and the cooling fan 23 runs at a constant speed N7.

[0052] In this embodiment, the water tank 10 requires the greatest cooling capacity after water filling. At this time, controlling the cooling damper 21 to open to its maximum opening amount and the cooling fan 23 to run at a constant speed N1 can reduce the water temperature in the water tank 10 most quickly. Conversely, the water tank 10 requires the least cooling capacity after cooling. At this time, controlling the cooling damper 21 to open to 10% of its maximum opening amount and the cooling fan 23 to run at a constant speed N7 can maintain the water temperature in the water tank 10 at the set temperature T1. Therefore, this control method can ensure the cooling efficiency of the refrigeration equipment while reducing its energy consumption.

[0053] Moreover, the opening amount of the cooling damper 21 and the speed of the cooling fan 23 can be controlled at a certain value to ensure constant cooling output and make the cooling process stable and controllable.

[0054] Furthermore, in step S2, when the room temperature T2 of the cooling chamber 30 is 2°C lower than the set temperature of the cooling water, the cooling damper 21 is controlled to open to 50% of its maximum opening amount, and the cooling fan 23 is operated at a constant speed N2, wherein the speed N7 < speed N2 < speed N1.

[0055] In this embodiment, since the specific heat capacity of water is greater than that of air, the cooling rate of water is slower than that of air. Therefore, when the room temperature T2 of the cooling chamber 30 is less than the set temperature T1 of the cooling water by 2°C, it would be more reasonable and accurate to reduce the opening amount of the cooling damper 21 and reduce the speed of the cooling fan 23.

[0056] Reference Figure 6 As shown, the refrigeration equipment provided in the above embodiments relates to another control method for refrigeration equipment. In addition to the above steps, the control method further accelerates the cooling of the cooling water by controlling the circulating pump 60 and the spray fan 50.

[0057] Specifically, the refrigeration equipment also includes a spray head 40, a spray fan 50, and a circulation pump 60 connecting the spray head 40 and the water tank 10, all located on top of the water tank 10. In this embodiment, when the ambient temperature of the refrigeration equipment is high and the water consumption is large and frequent, the circulation pump 60 and the spray fan 40 are turned on to accelerate the cooling of the water in the water tank 10. The spray head 40 can atomize the liquid delivered by the circulation pump 60, forming a fine spray stream, increasing the contact area between the liquid and the air inside the cooling chamber 30, thereby accelerating the heat exchange between the liquid and the air inside the cooling chamber 30. The spray fan 50 can accelerate the airflow inside the cooling chamber 30, thereby accelerating the heat exchange between the liquid flowing out of the spray head 40 and the air inside the cooling chamber 30.

[0058] In step S2, after the water injection valve is closed, the circulation pump 60 and the spray fan 50 are turned on. In step S3, after the water temperature T3 in the water box 10 reaches the set temperature T1 of the cooling water, the circulation pump 60 and the spray fan 50 are turned off.

[0059] In this embodiment, when the ambient temperature is high or the user needs to frequently collect water, the user can choose to use such a method. Figure 6 The control method shown accelerates the water temperature in water box 10 to reach the set temperature. Correspondingly, the user can also choose to turn off the circulation pump 60 and the spray fan 50, and instead select... Figure 3 The control method shown saves energy. Turning on the circulating pump 60 and the spray fan 50 enables rapid cooling of the cooling water, reducing the user's waiting time for cooling water. Simultaneously, once the water temperature T3 in the water box 10 reaches the set temperature T1, the circulating pump 60 and the spray fan 50 are turned off, thus saving energy consumption of the refrigeration equipment.

[0060] In some embodiments, in step S2, when the ambient temperature of the refrigeration equipment is higher than the set ambient temperature, after the water injection valve is closed, the circulation pump 60 and the spray fan 50 are turned on, and the cooling damper 21 and the cooling fan 23 in the cooling duct 20 are also turned on. Similarly, in step S2, when the ambient temperature of the refrigeration equipment is lower than or equal to the set ambient temperature, after the water injection valve is closed, the circulation pump 60 and the spray fan 50 are not activated, but only the cooling damper 21 and the cooling fan 23 in the cooling duct 20 are turned on. Alternatively, in step S2, the decision to turn on the circulation pump 60 and the spray fan 50 can also be based on the amount of water drawn within a preset time period.

[0061] Furthermore, in conjunction with reference Figure 7 As shown, in step S2, after turning on the circulating pump 60 and the spray fan 50, when the room temperature T2 of the cooling chamber 30 is less than the set temperature T1 of the cooling water, the speed of the circulating pump 60 and the spray fan 50 is reduced.

[0062] In this embodiment, when the temperature of the cooling chamber 30 is lower than the set temperature T1 of the cooling water, the water in the water box 10 can exchange heat with the cooling chamber 10 to achieve cooling. Therefore, the cooling capacity supplied to the inside of the water box 10 can be reduced. The heat exchange between the cooling water and the cooling chamber 30 can be reduced by reducing the speed of the circulating pump 60 and the spray fan 50, thereby saving energy consumption of the refrigeration equipment. At the same time, the cooling rate of the cooling water remains unchanged, and the waiting time for the user to cool the water will not be increased.

[0063] Furthermore, in conjunction with reference Figure 8 As shown, in step S2, after the water injection valve is closed, when the water temperature T3 in the water box 10 is greater than the set temperature T1, the circulating pump 60 is controlled to run at a constant speed N3 and the spray fan 50 is controlled to run at a constant speed N4. When the room temperature T2 of the cooling chamber 30 is lower than the set temperature of the cooling water by 2°C, the circulating pump 60 is controlled to run at a constant speed N5 and the spray fan 50 is controlled to run at a constant speed N6, wherein the speed N5 < the speed N3 and the speed N6 < the speed N4.

[0064] In this embodiment, the water tank 10 requires the greatest cooling capacity after water filling. At this time, controlling the circulating pump 60 to run at a constant speed N3 and the spray fan 50 to run at a constant speed N4 can reduce the water temperature in the water tank 10 most quickly. Moreover, the speeds of the circulating pump 60 and the spray fan 50 can be controlled at a certain constant value, thereby ensuring a constant cooling output and making the cooling process stable and controllable. Since the specific heat capacity of water is greater than that of air, the cooling rate of water is slower than that of air. Therefore, when the room temperature of the cooling chamber 30 is less than 2°C below the set temperature T1 of the cooling water, reducing the speeds of the circulating pump 60 and the spray fan 50 is more reasonable and accurate. This can save energy consumption of the refrigeration equipment while ensuring that the cooling rate of the cooling water remains constant, without increasing the user's waiting time for cooling water.

[0065] Furthermore, the refrigeration equipment also includes a housing and a door 70 pivotally connected to the housing, with the cooling chamber 30 disposed on the door 70. In this embodiment, the cooling chamber 30 is disposed on the door 70, effectively utilizing the space of the door 70 and allowing users to directly access water from outside the door 70 without opening it. Of course, in some embodiments, the cooling chamber 30 may also be disposed within the refrigerator compartment or variable temperature compartment of the housing.

[0066] Furthermore, in conjunction with reference Figure 9 As shown, in step S2, after the water injection valve is closed, the door 70 is in the closed state, and the cooling damper 21 and cooling fan 23 are opened. In this embodiment, since the cooling chamber 30 is located on the door 70, the cooling chamber 30 will exchange heat with the outside air after the door 70 is opened. Therefore, the water box 10 is cooled only after the door 70 is in the closed state to avoid loss and waste of cooling capacity.

[0067] Specifically, the cooling duct 20 is disposed within the cooling chamber 30, and the refrigeration equipment also includes a cooling evaporator 25 disposed within the cooling duct 20. In this embodiment, the cooling chamber 30 uses an independent duct and evaporator for cooling, which results in higher cooling efficiency and prevents odor transfer with the interior space of the chamber.

[0068] In step S2, after the door 70 is in a closed state for a preset time, the cooling damper 21 and the cooling fan 23 are opened.

[0069] In this embodiment, the preset time is preferably 10 seconds, that is, the door 70 is closed for 10 seconds before proceeding to the next step. On the one hand, the cooling chamber 30 stops exchanging heat with the outside after the door 70 is closed for 10 seconds, so as to avoid wasting cooling capacity; on the other hand, it avoids the user from frequently opening and closing the door 70, which would cause the cooling fan 21 and the cooling damper 23 to open and close frequently.

[0070] Specifically, since the state of door 70 is acquired by the door opening sensor at preset intervals, the sensor can be set to acquire the state of door 70 every 10 seconds. Thus, when door 70 is closed and remains closed for a preset time, it can be determined that door 70 has been closed for 10 seconds, at which point the next step can proceed. Alternatively, the refrigeration equipment can also use a time sensor to acquire the duration of door 70's closed state.

[0071] Specifically, the refrigeration equipment also includes a level gauge installed inside the water tank 10. In this embodiment, the level gauge can accurately obtain the water level value of the water tank 10, and calculate the increase or decrease in water volume inside the water tank 10 by the change in the water level value.

[0072] Furthermore, in conjunction with reference Figure 10 As shown, in step S1, after obtaining the water injection valve start signal, the water injection valve is opened, and after obtaining the value of the level gauge reaching the preset level value, the water injection valve is closed.

[0073] In this embodiment, when the user supplies water to the water box 10 using the water injection valve, the amount of water injected into the water box 10 and the remaining water in the water box 10 can be detected by the level gauge. When the water level in the water box 10 reaches the user's set value, the water injection valve is controlled to close.

[0074] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0075] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A control method for a refrigeration device, wherein the refrigeration device includes a water tank for storing water and a water inlet valve for supplying water to the water tank, characterized in that, The refrigeration equipment includes a cooling chamber housing the water box. The water in the water box is cooled by exchanging heat with the interior of the cooling chamber. The refrigeration equipment also includes a cooling duct installed in the cooling chamber, and a cooling damper, a cooling fan, and a cooling evaporator installed in the cooling duct. The control method includes the following steps: S1. Obtain the water injection valve start signal; S2. After the water injection valve is closed, open the cooling damper and cooling fan in the cooling air duct; S3. Once the water temperature T3 in the water tank reaches the set temperature T1 of the cooling water, reduce the opening amount of the cooling damper and reduce the speed of the cooling fan.

2. The control method for the refrigeration equipment as described in claim 1, characterized in that, In step S2, after opening the cooling damper and cooling fan, if the room temperature T2 of the cooling room is less than the set temperature T1 of the cooling water, the opening amount of the cooling damper is reduced and the speed of the cooling fan is reduced.

3. The control method for the refrigeration equipment as described in claim 2, characterized in that, In step S2, after the water injection valve is closed, when the water temperature T3 in the water box is greater than the set temperature T1, the cooling damper is controlled to open to the maximum opening amount and the cooling fan runs at a constant speed N1. In step S3, after the water temperature T3 in the water box reaches the set temperature T1 of the cooling water, the cooling damper is controlled to open to 10% of the maximum opening amount and the cooling fan runs at a constant speed N7, where the speed N7 < the speed N1.

4. The control method for the refrigeration equipment as described in claim 3, characterized in that, In step S2, when the room temperature T2 of the cooling room is 2°C lower than the set temperature of the cooling water, the cooling damper is opened to 50% of its maximum opening capacity, and the cooling fan runs at a constant speed N2, where speed N7 < speed N2 < speed N1.

5. The control method for the refrigeration equipment as described in claim 2, characterized in that, The refrigeration equipment also includes a spray head, a spray fan, and a circulation pump connecting the spray head and the water box, which are located on the top of the water box. In step S2, after the water injection valve is closed, the circulation pump and the spray fan are turned on. In step S3, after the water temperature T3 in the water box reaches the set temperature T1 of the cooling water, the circulation pump and the spray fan are turned off.

6. The control method for the refrigeration equipment as described in claim 5, characterized in that, In step S2, after turning on the circulating pump and the spray fan, when the room temperature T2 of the cooling room is less than the set temperature T1 of the cooling water, the speed of the circulating pump and the spray fan is reduced.

7. The control method for the refrigeration equipment as described in claim 6, characterized in that, In step S2, after the water injection valve is closed, when the water temperature T3 in the water box is greater than the set temperature T1, the circulating pump is controlled to run at a constant speed N3 and the spray fan is controlled to run at a constant speed N4. When the room temperature T2 of the cooling room is lower than the set temperature of the cooling water by 2°C, the circulating pump is controlled to run at a constant speed N5 and the spray fan is controlled to run at a constant speed N6, wherein speed N5 < speed N3 and speed N6 < speed N4.

8. The control method for the refrigeration equipment as described in claim 2, characterized in that, The refrigeration equipment also includes a housing and a door pivotally connected to the housing. The cooling chamber is located on the door. In step S2, after the water injection valve is closed, the door is found to be in a closed state, and the cooling damper and cooling fan are opened.

9. The control method for the refrigeration equipment as described in claim 8, characterized in that, In step S2, after the door is in a closed state for a preset time, the cooling damper and cooling fan are opened.

10. The control method for the refrigeration equipment as described in claim 1, characterized in that, The refrigeration equipment also includes a level gauge installed in the water tank. In step S1, after obtaining the water injection valve start signal, the water injection valve is opened. After obtaining the value of the level gauge and reaching the preset level value, the water injection valve is closed.

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