Control method of a refrigeration device

Abstract

A control method for a refrigeration device, wherein the refrigeration device is provided with a water box for storing water, characterized in that the control method includes the following steps: S1, acquiring a cooling signal; S2, controlling the water box to rotate at a preset rotation speed; S3, after acquiring the water temperature T3 in the water box and reaching the set temperature T1 of the cooling water, controlling the water box to stop rotating; after acquiring the cooling signal of the water box, the refrigeration device cools the cooling chamber and drives the water box to rotate, thereby accelerating the heat transfer of the liquid in the water box, and thus accelerating the water temperature in the water box to reach the set temperature.

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. In existing refrigeration equipment, the water tank is placed statically in the compartment, and the liquid in the water tank is cooled by heat exchange between the evaporator in the compartment and the water tank. In this way, the liquid closer to the evaporator in the water tank reaches the set temperature first, and then the cooling energy is transferred to the liquid farther from the evaporator through heat transfer within the water tank, and they eventually reach the set temperature together. This results in a long time required for the water in the water tank to reach the set temperature. Summary of the Invention

[0003] The purpose of this invention is to provide a control method for a refrigeration device with a fast water box cooling speed.

[0004] To achieve one of the above-mentioned objectives, an 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, characterized in that the control method includes the following steps:

[0005] S1. Obtain the cooling signal;

[0006] S2. Control the water box to rotate at a preset speed;

[0007] S3. Once the water temperature T3 in the water tank reaches the set temperature T1 of the cooling water, control the water tank to stop rotating.

[0008] As a further improvement of one embodiment of the present invention, the refrigeration device includes a cooling chamber for accommodating a water box and a cooling evaporator disposed in the cooling chamber. In step S2, after obtaining that the room temperature T2 of the cooling chamber is less than the set temperature T1 of the cooling water, the amount of refrigerant flowing into the cooling evaporator is reduced.

[0009] As a further improvement of one embodiment of the present invention, the refrigeration device includes a motor that drives the water box to rotate. The acquisition of the cooling signal in step S1 specifically refers to: acquiring the water temperature T3 in the water box at a preset time interval, and acquiring the motor start signal when the water temperature T3 in the water box is greater than the set temperature T1 of the cooling water.

[0010] As a further improvement of one embodiment of the present invention, the refrigeration equipment further includes a cooling pipe connected to the inlet end of the cooling evaporator and a cooling solenoid valve disposed on the cooling pipe. In step S2, after obtaining the start signal of the motor, the cooling solenoid valve is controlled to run at a preset number of steps N1. When the room temperature T2 of the cooling chamber is lower than the set temperature of the cooling water by 2°C, the cooling solenoid valve is controlled to run at a preset number of steps N2. The flow rate of the cooling solenoid valve at step N1 is greater than the flow rate of the cooling solenoid valve at step N2.

[0011] As a further improvement of one embodiment of the present invention, in step S2, after the cooling solenoid valve runs continuously for a preset time t1 with step number N1, the motor is started and controlled to run at a preset rotation speed n1. In step S3, after the water temperature T3 in the water box reaches the set temperature T1 of the cooling water, the motor is turned off.

[0012] As a further improvement of one embodiment of the present invention, in step S2, when the ambient temperature T4 of the refrigeration equipment is higher than the set ambient temperature T5, the cooling solenoid valve is controlled to run at a preset number of steps N3, and the motor is controlled to run at a preset rotation speed n2, wherein the flow rate of the cooling solenoid valve when the number of steps is N3 is greater than the flow rate of the cooling solenoid valve when the number of steps is N1, and n2 > n1.

[0013] 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 obtaining that the door is in a closed state and continues for a preset time t2, the motor is started.

[0014] As a further improvement of one embodiment of the present invention, the cooling evaporator and the water box are arranged at intervals in the vertical direction, the rotation axis of the water box is collinear with the central axis of the water box, and the rotation axis of the water box is arranged parallel to the horizontal plane.

[0015] As a further improvement of one embodiment of the present invention, the rotation axis of the water box extends along the depth direction of the door, and the rotation axis of the motor is parallel to and spaced apart from the rotation axis of the water box.

[0016] As a further improvement of one embodiment of the present invention, the water box has a sidewall extending along the central axis of the water box, an installation cavity formed on the sidewall and recessed toward the inside of the water box, a water injection component disposed in the installation cavity and communicating with the inside of the water box, and the refrigeration device further includes a drive wheel abutting against the sidewall and connected to a motor for transmission, and at least one driven wheel abutting against the sidewall and rotatably disposed in the cooling chamber, wherein the rotation axis of the drive wheel and the rotation axis of the driven wheel are both parallel to the rotation axis of the water box.

[0017] Compared with the prior art, the refrigeration device in the embodiments of the present invention cools the cooling chamber after obtaining the cooling signal of the water box and drives the water box to rotate, thereby accelerating the heat transfer of the liquid in the water box and thus accelerating the water temperature in the water box to reach the set temperature. 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 Control flowchart of a preferred 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 This is a further implementation of step S2 in the control flowchart of the refrigeration equipment;

[0024] Figure 7 This is a further implementation of step S2 in the control flowchart of the refrigeration equipment. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] The device may be oriented in other ways (rotated 90 degrees or otherwise), and the spatially related descriptive terms used herein shall be interpreted accordingly. For ease of description, in this invention, when the door of the refrigeration device is closed, the direction facing the ground is downward, and the direction away from the ground is upward; the direction parallel to the ground is horizontal, and the direction perpendicular to the ground is vertical; the side closer to the user is the front side, and the side farther from the user is the rear side.

[0028] refer to Figure 1 and Figure 2 As shown, a preferred embodiment of the present invention provides a refrigeration device that can be configured as a refrigerator, freezer, or other refrigeration equipment, and is particularly suitable for upright refrigerators.

[0029] Specifically, such as Figure 1 As shown, the refrigeration equipment includes a housing (not shown), a door 50 movably connected to the housing, and a refrigeration circuit. The refrigeration circuit includes a compressor, condenser, evaporator, etc., connected by pipes. A cooling chamber 20 is defined on the door 50, and the refrigeration circuit supplies cooling capacity to the cooling chamber 20.

[0030] Furthermore, the refrigeration equipment also includes a water box 10 disposed within the cooling chamber 20. The water in the water box 10 is cooled by exchanging heat with the interior of the cooling chamber 20. In this embodiment, the water box 10 is supplied with water manually, meaning that the user needs to remove the water box 10 from the cooling chamber 20 when adding or removing water. Moreover, the water box 10 is equipped with a temperature sensor for acquiring water temperature and a scale or level gauge for acquiring liquid level. The cooling chamber 20 is also equipped with a temperature sensor for acquiring chamber temperature. The temperature sensors monitor the temperature of the water box 10 and the interior of the cooling chamber 20 at preset time intervals. Of course, in some embodiments, the cooling chamber 20 may also be formed within a housing.

[0031] Furthermore, in conjunction with reference Figure 2 As shown, the refrigeration equipment also includes a cooling evaporator 30 disposed within the cooling chamber 20. In this embodiment, the cooling chamber 20 uses direct cooling for cooling. After generating cooling capacity, the cooling evaporator 30 transfers the cooling capacity to the cooling chamber 20 and the water box 10 within the cooling chamber 20 through direct radiation. Of course, in some embodiments, the cooling chamber 20 may also use air cooling to obtain cooling capacity.

[0032] Specifically, the cooling evaporator 30 is fixed to the top of the cooling chamber 20 and located directly above the water box 10. Moreover, the cooling chamber 20 is formed within the foam layer of the door 50, enabling the cooling chamber 20 to be cooled independently while avoiding heat exchange between the cooling chamber 20 and the chambers inside the cabinet.

[0033] Specifically, the refrigeration equipment also includes a cooling pipe connected to the inlet end of the cooling evaporator 30 and a cooling solenoid valve installed on the cooling pipe. In this embodiment, to achieve separate cooling of the cooling chamber 20, when configuring the refrigeration circuit of the refrigeration equipment, the cooling evaporator 30 is set on a separate refrigeration branch for cooling the cabinet, and a cooling solenoid valve is installed on this refrigeration branch. By changing the step number corresponding to the cooling solenoid valve, the flow rate of refrigerant on the refrigeration branch where the cooling evaporator 30 is located is changed, thereby changing the amount of refrigerant entering the cooling evaporator 30.

[0034] Specifically, the cooling solenoid valve is a "one-in, three-out" solenoid valve, including three outlet pipes A, B, and C, with three possible connection methods. The three outlet pipes A, B, and C correspond to three specific steps N1, N2, and N3 of the cooling solenoid valve, respectively: after the valve body rotates to step N1 (corresponding to outlet pipe A), outlet pipe A is connected; after the valve body rotates to step N2 (corresponding to outlet pipe B), outlet pipe B is connected; and after the valve body rotates to step N3 (corresponding to outlet pipe C), outlet pipe C is connected, thereby changing the refrigerant charge entering the cooling evaporator 30. The flow rate at step N3 is greater than the flow rate at step N1, which is greater than the flow rate at step N2. Furthermore, the inlet end of the cooling evaporator 30 is connected to the three outlet pipes of the cooling solenoid valve, and the connection method and the corresponding steps of the cooling solenoid valve are written into the program. When the cooling chamber 20 requests cooling, the program drives the cooling solenoid valve body to run the corresponding steps, which can connect the inlet end of the cooling evaporator 30 and realize the switching of refrigerant flow on the refrigeration branch where the cooling evaporator 30 is located.

[0035] Furthermore, the refrigeration equipment also includes a door opening sensor disposed on the door 50 or the cabinet. The door opening sensor is used to detect whether the door 50 is in a closed state or an open state, and the door opening sensor detects the state of the door 50 at preset time intervals.

[0036] Furthermore, the refrigeration device includes a motor 40 that drives the water tank 10 to rotate. In this embodiment, the motor 40 is fixed inside the cooling chamber 20, and the motor 40 and the water tank 10 are connected by a transmission assembly 80. The transmission assembly 80 is preferably a spur gear set with a fixed transmission ratio. By changing the rotational speed of the motor 40, the rotational speed of the water tank 10 is changed. Of course, in some embodiments, the rotational speed of the water tank 10 can also be changed by changing the transmission ratio of the transmission assembly 80.

[0037] Furthermore, the cooling evaporator 30 and the water box 10 are arranged vertically at intervals. In this embodiment, since the cooling evaporator 30 cools the water box 10 by means of refrigeration, and the water box 10 is located directly below the cooling evaporator 30, the cold air generated by the cooling evaporator 30 moves downward and just achieves heat exchange with the water box 10 below. Moreover, by bringing the water box 10 as close as possible to the cooling evaporator 30, the cooling of the water box 10 can be accelerated.

[0038] Furthermore, the rotation axis of the water box 10 is collinear with the central axis of the water box 10, and the rotation axis of the water box 10 is parallel to the horizontal plane. In this embodiment, the cross-section of the water box 10 is circular. When the water box 10 rotates in the vertical direction, the distance between the edge of the water box 10 and the cooling evaporator 30 remains constant, so that the edge of the water box 10 can exchange heat with the cooling evaporator 30 during the rotation process.

[0039] Specifically, the rotation axis of the water box 10 extends along the depth direction of the door body 50. In this embodiment, the depth direction of the door body 50 refers to... Figure 1 In the front-to-back direction, the water box 10 rotates along the depth direction of the door 50, which can reduce the thickness of the door 50 along the depth direction and make full use of the space of the door 50 in the width and height directions.

[0040] Specifically, the rotation axis of the motor 40 is parallel to and spaced apart from the rotation axis of the water box 10. In this embodiment, the parallelism between the rotation axis of the motor 40 and the rotation axis of the water box 10 reduces torque loss during the transmission of torque by the transmission assembly 80. Therefore, the transmission assembly 80 can be made of meshing spur gears, which simplifies the installation and assembly of the transmission assembly 80 while ensuring smooth torque transmission and saving manufacturing costs. The spaced between the rotation axis of the motor 40 and the rotation axis of the water box 10, i.e., the water box 10 and the motor 40 are spaced apart in the vertical direction, saves space in the front-to-back direction of the cooling chamber 20, thereby reducing the thickness of the door 50 in the depth direction.

[0041] Specifically, the water box 10 has a sidewall 11 extending along the central axis of the water box 10, a mounting cavity 13 formed on the sidewall 11 and recessed towards the inside of the water box 10, and a water injection component 15 disposed in the mounting cavity 13 and communicating with the inside of the water box 10. In this embodiment, the cross-section of the sidewall 11 is circular to ensure that the distance between the edge of the water box 10 and the cooling evaporator 30 remains constant when the water box 10 rotates. The water injection component 15 is disposed in the mounting cavity 13 to avoid interference when the water box 10 rotates. After the user removes the water box 10 from the cooling chamber 20, they can add water to the water box 10 or take water from the water box 10 by opening the water injection component 15. When the water box 10 is in the cooling chamber 20, the water injection component is closed to prevent leakage during the rotation of the water box 10.

[0042] Furthermore, the refrigeration equipment also includes a drive wheel 60 that abuts against the side wall 11 and is connected to the motor 40, and at least one driven wheel 70 that abuts against the side wall 11 and is rotatably disposed within the cooling chamber 20. In this embodiment, the water box 10 abuts against the drive wheel 60 and the driven wheel 70 under its own weight. The motor 40 drives the drive wheel 60 to rotate through the transmission assembly 80. The rotation of the drive wheel 60 drives the water box 10 to rotate, and the rotation of the water box 10 drives the driven wheel 70 to rotate. Moreover, when the water box 10 is subjected to its own weight, the side wall 11 abuts against the drive wheel 60 and the driven wheel 70, thereby realizing the rotation of the water box 10 within the cooling chamber 20. The water injection component 15 is disposed within the mounting cavity 13 to prevent interference between the water injection component 15 and the drive wheel 60 and the driven wheel 70 during the rotation of the water box 10 using the side wall 11.

[0043] Specifically, the rotation axes of the drive wheel 60 and the driven wheel 70 are both parallel to the rotation axis of the water box 10. In this embodiment, the parallelism of the rotation axes of the drive wheel 60 and the driven wheel 70 reduces the thickness of the door body 50 along the depth direction. Both the drive wheel 60 and the driven wheel 70 abut against the bottom of the water box 10, thereby supporting the water box 10. The driven wheel 70 ensures the smooth rotation of the water box 10. Moreover, preferably, only one driven wheel 70 is used, with the drive wheel 60 and the driven wheel 70 positioned opposite each other in the left-right direction.

[0044] 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.

[0045] Reference Figure 3 As shown, the refrigeration equipment provided in the above embodiments relates to a control method for refrigeration equipment, the control method comprising the following steps:

[0046] S1. Obtain the cooling signal;

[0047] S2. Control the water box 10 to rotate at a preset rotation speed;

[0048] S3. Once the water temperature T3 in the water box 10 reaches the set temperature T1 of the cooling water, control the water box 10 to stop rotating.

[0049] In this embodiment, when the water box 10 rotates, it increases the heat exchange rate of the internal liquid on the one hand, and ensures that the edges of the water box 10 can be close to the cooling evaporator 30 and exchange heat with the cooling evaporator 30 on the other hand, thereby accelerating the cooling of the liquid in the water box 10.

[0050] In step S2, the rotation speed of the water box 10 remains constant during the rotation process, thereby making the rate of decrease of the water temperature of the water box 10 controllable, that is, the cooling rate of the water box 10 can be changed by changing the rotation speed of the water box 10.

[0051] In this embodiment, the set temperature T1 of the cooling water is typically set between 1°C and 9°C. Therefore, the cooling chamber 20 is preferably configured as a cold storage chamber or located in a variable temperature chamber. In step S3, when the water temperature T3 in the water box 10 reaches the set temperature T1 of the cooling water, the water box 10 stops rotating, and the cooling capacity within the cooling chamber 10 is used to maintain the water temperature of the water box 10, thereby saving energy consumption of the refrigeration equipment.

[0052] After receiving the cooling signal from the water box 10, the refrigeration equipment cools the cooling chamber 20 and drives the water box 10 to rotate, thereby accelerating the heat transfer of the liquid in the water box 10 and thus accelerating the water temperature in the water box 10 to reach the set temperature.

[0053] Reference Figure 4 As shown, further, in step S2, after obtaining that the room temperature T2 of the cooling chamber 20 is less than the set temperature T1 of the cooling water, the amount of refrigerant flowing into the cooling evaporator 30 is reduced.

[0054] In this embodiment, when the temperature of the cooling chamber 20 is lower than the set temperature T1 of the cooling water, the amount of cooling required for the water in the water box 10 to exchange heat with the cooling chamber 20 is reduced, thereby reducing the output cooling capacity of the cooling evaporator 30. This can maintain the cooling rate of the water box 10 at the same time, while also reducing the energy consumption of the refrigeration equipment.

[0055] Reference Figure 5 As shown, further, the acquisition of the cooling signal in step S1 specifically refers to: acquiring the water temperature T3 in the water box 10 at a preset time interval, and acquiring the start signal of the motor 40 when the water temperature T3 in the water box 10 is greater than the set temperature T1 of the cooling water.

[0056] In this embodiment, in step S1, after the user fills the water tank 10 with water, the water temperature T3 inside the water tank 10 becomes higher than the set temperature T1 of the cooling water. At this time, it is necessary to drive the water tank 10 to rotate to accelerate the cooling of the water tank 10. Therefore, this can be achieved by starting the motor 40. In some embodiments, when the user lowers the set temperature T1 of the cooling water, the water temperature T3 inside the water tank 10 will also become higher than the set temperature T1 of the cooling water. Therefore, the cooling signal obtained in step S1 can also be the user's temperature adjustment command.

[0057] Furthermore, in step S2, after obtaining the start signal of motor 40, the cooling solenoid valve is controlled to run at a preset number of steps N1. When the room temperature T2 of cooling chamber 20 is lower than the set temperature of cooling water by 2°C, the cooling solenoid valve is controlled to run at a preset number of steps N2. The flow rate of the cooling solenoid valve at step N1 is greater than the flow rate of the cooling solenoid valve at step N2.

[0058] In this embodiment, the flow rate of refrigerant in the refrigeration branch where the cooling evaporator 30 is located is changed by altering the number of steps corresponding to the cooling solenoid valve, thereby changing the amount of refrigerant entering the cooling evaporator 30. Adjusting the refrigerant amount by changing the number of steps corresponding to the cooling solenoid valve is simple in structure, easy to operate and implement, thus saving manufacturing costs for refrigeration equipment. Of course, in some embodiments, the amount of refrigerant entering the cooling evaporator 30 can also be changed by adjusting the output power of the compressor, achieving the same objective.

[0059] Furthermore, since water has a higher specific heat capacity than air, water cools slower than air. Therefore, when the room temperature T2 of the cooling chamber 20 is less than the set temperature T1 of the cooling water by 2°C, it is more reasonable and accurate to reduce the amount of refrigerant entering the cooling evaporator 30.

[0060] Furthermore, in step S2, after the cooling solenoid valve runs continuously for a preset time t1 with a number of steps N1, the motor 40 is started and controlled to run at a preset rotation speed n1.

[0061] In this embodiment, when the step count of the cooling solenoid valve is adjusted to N1, the amount of refrigerant entering the cooling evaporator 30 remains constant. After adjusting the step count of the cooling solenoid valve to N1 and maintaining it for time t1, the output cooling capacity of the cooling evaporator 30 remains constant. Once the output cooling capacity of the cooling evaporator 30 remains constant, the motor 40 is started to rotate the water box 10, which improves the heat exchange effect between the water box 10 and the cooling evaporator 20, allowing for uniform cooling at the edges of the water box 10. The preset time t1 is preferably 180 seconds.

[0062] Specifically, in step S3, after the water temperature T3 in the water tank reaches the set temperature T1 of the cooling water, the motor 40 is turned off. In this embodiment, the water tank 10 is driven by the motor 40 to rotate. When the motor 40 is turned off, the water tank also stops rotating. The start / stop signal of the motor 40 is used as the start or end signal of the control method of this scheme, thereby simplifying the operation and implementation of the program.

[0063] Reference Figure 6 As shown, further, in step S2, when the ambient temperature T4 of the refrigeration equipment is higher than the set ambient temperature T5, the cooling solenoid valve is controlled to run at a preset number of steps N3, and the motor 40 is controlled to run at a preset rotation speed n2. The flow rate of the cooling solenoid valve when the number of steps N3 is greater than the flow rate of the cooling solenoid valve when the number of steps N1 is greater than n2 > n1.

[0064] In this embodiment, the refrigeration device obtains the ambient temperature T4 of the refrigeration device at preset time intervals through a temperature sensor. When the ambient temperature T4 of the refrigeration device is higher than the set ambient temperature T5, such as in the hot summer, the amount of refrigerant entering the cooling evaporator 30 and the rotation speed of the water box 10 are increased, thereby accelerating the water temperature T3 in the water box 10 to reach the set temperature T1 of the cooling water, so as not to affect the user's access speed.

[0065] Of course, in some embodiments, when frequent water draws are required, the user can also switch to such a mode independently. Figure 6 The control steps of one of the two shown can accelerate the water temperature of the water box 10 to reach the set temperature, thereby meeting different usage needs.

[0066] Reference Figure 7 As shown, in step S2, after obtaining that the door 50 is in a closed state and continues for a preset time t2, the motor 40 is started.

[0067] In this embodiment, the motor 40 is turned on after the door 50 has been closed for a period of time t2. This serves two purposes: firstly, the cooling chamber 20 stops exchanging heat with the outside after the door 50 has been closed for a period of time t2, thus avoiding waste of cooling capacity; secondly, it prevents the user from frequently opening and closing the door 50, which would cause the motor 40 to start and stop frequently. The preferred time t2 is 10 seconds.

[0068] 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.

[0069] 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 of a refrigerating apparatus, the refrigerating apparatus having a water box for storing water therein, characterized by, The refrigeration equipment includes a cooling chamber housing a water tank and a cooling evaporator disposed within the cooling chamber. The refrigeration equipment also includes a motor that drives the water tank to rotate, a cooling pipe connected to the inlet end of the cooling evaporator, and a cooling solenoid valve disposed on the cooling pipe. The control method includes the following steps: S1. Obtain the water temperature T3 in the water box at preset time intervals. When the water temperature T3 in the water box is greater than the set temperature T1 of the cooling water, obtain the motor start signal. S2. Control the water box to rotate at a preset rotation speed; after obtaining the motor start signal, control the cooling solenoid valve to run at a preset number of steps N1. When the room temperature T2 of the cooling chamber is 2℃ lower than the set temperature of the cooling water, control the cooling solenoid valve to run at a preset number of steps N2. The flow rate of the cooling solenoid valve at step N1 is greater than the flow rate of the cooling solenoid valve at step N2. S3. Once the water temperature T3 in the water tank reaches the set temperature T1 of the cooling water, control the water tank to stop rotating.

2. The control method of the refrigerating apparatus according to claim 1, characterized by, In step S2, after the cooling solenoid valve runs continuously for a preset time t1 with step number N1, the motor is started and controlled to run at a preset rotation speed n1. In step S3, after the water temperature T3 in the water box reaches the set temperature T1 of the cooling water, the motor is turned off.

3. The control method for the refrigeration equipment as described in claim 2, characterized in that, In step S2, when the ambient temperature T4 of the refrigeration equipment is higher than the set ambient temperature T5, the cooling solenoid valve is controlled to run at a preset number of steps N3, and the motor is controlled to run at a preset rotation speed n2. The flow rate of the cooling solenoid valve when the number of steps N3 is greater than the flow rate of the cooling solenoid valve when the number of steps N1 is greater than n2 > n1.

4. The control method for the refrigeration equipment as described in claim 1, characterized in that, The refrigeration equipment also includes a housing and a door that is pivotally connected to the housing. The cooling chamber is located on the door. In step S2, after the door is in a closed state for a preset time t2, the motor is started.

5. The control method for the refrigeration equipment as described in claim 4, characterized in that, The cooling evaporator and the water box are arranged vertically at intervals. The rotation axis of the water box is collinear with the central axis of the water box, and the rotation axis of the water box is parallel to the horizontal plane.

6. The control method for the refrigeration equipment as described in claim 5, characterized in that, The rotation axis of the water box extends along the depth direction of the door, and the rotation axis of the motor is parallel to and spaced apart from the rotation axis of the water box.

7. The control method for the refrigeration equipment as described in claim 6, characterized in that, The water box has a sidewall extending along the central axis of the water box, an installation cavity formed on the sidewall and recessed towards the inside of the water box, and a water injection component disposed in the installation cavity and communicating with the inside of the water box. The refrigeration device also includes a drive wheel that abuts against the sidewall and is connected to a motor for transmission, and at least one driven wheel that abuts against the sidewall and is rotatably disposed in the cooling chamber. The rotation axis of the drive wheel and the rotation axis of the driven wheel are both parallel to the rotation axis of the water box.

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