WO2019192169A1

WO2019192169A1 - Air-cooled refrigerator, and control method, control system, and controller for defrosting thereof

Info

Publication number: WO2019192169A1
Application number: PCT/CN2018/112721
Authority: WO
Inventors: 滕春华; 王永峰; 盛庆赫; 韩笑; 任伟
Original assignee: 合肥美的电冰箱有限公司; 合肥华凌股份有限公司; 美的集团股份有限公司
Priority date: 2018-04-02
Filing date: 2018-10-30
Publication date: 2019-10-10
Also published as: US20210055035A1; CN108613473A; CN108613473B; DE112018007426T5

Abstract

An air-cooled refrigerator, and a control method, control system, and controller for defrosting thereof. High-temperature air of the air-cooled refrigerator conducts heat exchange with an evaporator in an air duct and is delivered into a refrigeration compartment by means of the running of a fan. When the evaporator is gradually frosted, the heat-exchanged air receives frosting resistance of the evaporator during flowing, and the fan slows down. Based on the principle, the rotational speed of the fan can directly reflect the frost amount of the evaporator. The actual frost amount of the evaporator can be directly determined by determining the rotational speed of the fan. When it is sensed that the rotational speed of the fan is reduced to a given low rotational speed, it means that the evaporator is heavily frosted and defrosting needs to be started in time. Thus, the problems of large energy consumption and poor freshness preservation caused by defrosting in advance or delayed defrosting of a conventional control method are solved, and the energy saving and freshness preservation effect of the air-cooled refrigerator are improved.

Description

Air-cooled refrigerator and defrosting control method, control system and controller thereof

cross reference

This application is hereby incorporated by reference in its entirety to the entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire content .

Technical field

The embodiments of the present application relate to the field of defrosting control, in particular to a method for controlling defrosting of an air-cooled refrigerator, a control system for chilling of an air-cooled refrigerator, a controller, and an air-cooled refrigerator.

Background technique

Air-cooled refrigerator, also known as frost-free refrigerator, uses air to cool. When high-temperature air flows through the built-in evaporator, the high-temperature air exchanges heat directly with the low-temperature evaporator, the air temperature decreases, and the cooled air is blown into the refrigerator through the fan. Achieve refrigeration.

Since water vapor is always present in the air, the water vapor will condense when it is cold. During the process of continuous heat exchange, the water vapor gradually freezes on the evaporator. In order to promote the normal operation of the evaporator, the evaporator needs to be defrosted. At present, there are various conditions for starting the defrosting: CN12288613A provides the refrigerator defrosting control method to determine whether defrosting is required by the total time of cumulative operation of the compressor; whether the temperature is judged by the fan control method provided by CN106091566A and CN107477973A Frost; CN106403487A according to the opening time combined with other factors to determine whether defrosting is required, in other technologies, the combination of ambient temperature and humidity is used as a defrosting judgment condition. The above judgment schemes all estimate the frosting amount based on the empirical value, and start the defrosting according to the estimated amount. However, this kind of estimation method is not suitable for the actual use of the refrigerator in many cases. For example, the user's usage habits are different. The type of food that the user puts in every time the door is opened is unknown, the quantity of food is unknown, and the actual moisture content may be completely Different, the evaporator frosting situation varies widely, and the existing judgment conditions often have the following disadvantages:

1. Defrost in advance. If the actual amount of frost is not large (such as the user opens the door for a long time, but because the door is not put into the food, the actual amount of frost may not be much), according to the length of the door to determine the amount of frost will inevitably lead to pre-defrosting, power consumption increase. At the same time, due to the heating of the defrosting, the temperature in the refrigerator will rise, so the temperature of the food in the box will be heated up and the fresh-keeping effect will be weakened.

2. Hysteresis cream. If the actual amount of frosting is very large (such as the user opening the door for a short time, but put too much food with a large amount of moisture, the actual amount of frost will be a lot), but it is judged that the defrosting condition has not yet arrived, waiting for More opening time, running time or other conditions, such as the increase in frosting, cooling effect is weak, serious users will complain about the refrigerator not cooling, due to poor cooling effect, low efficiency, energy consumption will also increase, The preservation effect is also greatly reduced.

Summary of the invention

(1) Technical problems to be solved

The purpose of the embodiment of the present application is to provide a control method for the defrosting of the air-cooled refrigerator, a control system for the air-cooled refrigerator defrosting, a controller, and an air-cooled refrigerator, and solve the problem that the defrosting timing of the air-cooled refrigerator does not correspond to the actual frosting of the evaporator. .

(2) Technical plan

In order to solve the above technical problem, the present invention provides a method for controlling defrosting of an air-cooled refrigerator, comprising: collecting a fan speed R during stable operation of the refrigerator; determining whether the fan speed R is less than or equal to a preset speed Rmin; Yes, the defrosting operation is performed.

In the technical solution, based on the principle that the evaporator frosting generates resistance to the airflow and the fan speed decreases, the actual frosting amount of the evaporator is estimated by the fan speed, and whether the defrosting is required according to the frosting amount can be timely eliminated. Frost operation also avoids defrosting operations under non-defrosting requirements, saving energy.

In some embodiments, the defrosting operation employs a heater defrosting.

In the technical solution, the heater is arranged at the bottom of the evaporator, and the evaporator is directly defrosted by heat, and the frost water is taken away by the drain pipe to improve the defrosting efficiency.

In some embodiments, the fan speed is collected by operating the fan at a rated voltage, and determining the fan speed by detecting a feedback signal of the electronic control loop where the fan is located.

In the technical solution, the fan speed is determined according to the fan operation information, the actual operation of the fan is effectively grasped, and the judgment accuracy of the evaporator frost amount is improved.

In some embodiments, after the performing the defrosting operation, the controlling method further comprises: collecting an evaporator temperature; determining whether the evaporator temperature reaches a preset defrosting temperature; and if the determination result is YES, stopping defrosting .

In the technical solution, based on the frost-free or defrosting of the evaporator, it is judged whether the evaporator has been defrosted after the temperature is higher than a certain temperature, and the defrosting is terminated in time to save energy.

In some embodiments, the fan speed R before collection in a refrigerator stable operation, the control method further comprising: _after collecting the refrigerator fan speed _before a preset time period before and after the R and R blower speed; Analyzing _front fan speed R Whether the absolute value _of the difference between the fan speed R is less than or equal to ΔR; if the judgment result is YES, it is determined that the refrigerator is stably operated.

In the refrigeration operation of the refrigerator provided by the technical solution, the process of starting the refrigerator to the stable operation is judged, and a more accurate judgment environment is provided for judging the frost amount of the evaporator according to the fan speed, thereby improving the accuracy of the judgment.

The embodiment of the present application further provides a controller for performing the control method of the air-cooled refrigerator defrosting, comprising: a data receiving module, configured to acquire an evaporator temperature and a fan speed of the refrigerator in different states; Performing the above control method, determining whether the refrigerator needs defrosting according to the fan speed or determining whether the refrigerator stops the defrosting operation according to the evaporator temperature; and the signal sending module is configured to send the judgment result made by the judgment module to the defrosting of the refrigerator The component, the judgment result includes: starting defrosting, not starting defrosting, continuing defrosting, stopping defrosting.

In the technical solution, a control method for performing defrosting of the air-cooled refrigerator is provided with a plurality of functional modules to perform corresponding operations. Based on the principle that the evaporator frosting generates resistance to the airflow and the fan speed decreases, the actual frosting amount of the evaporator is estimated by the fan speed, and whether the defrosting is required according to the frosting amount can make the defrosting operation in time and avoid the non-frequent Defrost operation under defrost demand saves energy.

The embodiment of the present application further provides a control system for defrosting an air-cooled refrigerator, comprising: a fan, a defrosting assembly, and the controller, wherein the fan is disposed in the air duct of the box; and the controller passes through the electronic control loop Connected to the fan and the defrosting assembly, the controller detects the fan speed, and determines whether the defrosting component is activated according to the fan speed.

The technical solution corresponds to the above control method for defrosting the air-cooled refrigerator, the fan is operated in the air duct, the defrosting assembly is disposed on the evaporator or the defrosting heat is provided for the evaporator, and the controller is used for controlling the fan and the defrosting assembly. Through the effective control of the system, the actual frosting amount of the evaporator is estimated by the fan speed, and whether the defrosting is required according to the amount of frosting can timely perform the defrosting operation, and also avoid the operation of defrosting under the non-defrosting demand, saving Energy consumption.

In some embodiments, the control system for defrosting the air-cooled refrigerator further includes: an evaporator sensor electrically coupled to the controller for detecting an evaporator temperature; and the defrosting assembly In performing the defrosting operation, the controller determines whether the defrosting component stops the defrosting operation according to the evaporator temperature detected by the evaporator sensor.

In the technical solution, the temperature of the evaporator during defrosting and the temperature after defrosting is detected by the evaporator sensor, and the defrosting operation is ended in time. Based on the frost-free or defrosting of the evaporator, it is judged whether the evaporator has been defrosted after the temperature is higher than a certain temperature, and the defrosting is terminated in time to save energy.

In some embodiments, the defrosting assembly includes a heater disposed at the bottom of the evaporator.

The present invention also provides a computer device comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, the processor performing the control when the computer program is executed method.

The present invention also provides a computer readable storage medium having stored thereon a computer program that implements the control method when executed by a process.

The present invention also provides an air-cooled refrigerator including a tank air duct, a compressor, a condenser, a capillary, an evaporator, and the control system; the compressor, the condenser, the capillary, and the The evaporator constitutes a refrigerant circulation circuit; the evaporator is disposed in a tank air passage, and the evaporator is located upstream of the fan in an air flow path of the tank air passage.

In the technical solution, the refrigerator including any one of the above control systems can defrost the evaporator of the refrigerator in a more optimal frost condition under the cooling condition, that is, the defrosting is not timely, and the frosting amount is avoided. Start defrosting when there is little or no ice, reduce energy consumption, and more suitable for the actual use of the refrigerator.

(3) Beneficial effects

The technical solution provided by the embodiment of the present application is based on the high-temperature gas of the air-cooled refrigerator, which exchanges heat with the evaporator in the air duct, and is sent to the refrigerating compartment through the fan operation; when the evaporator is gradually frosted, the heat exchange gas is subjected to the evaporator on the flow. The resistance of the frost, the fan runs slower. Based on this principle, the fan speed can directly reflect the frosting amount of the evaporator. Then, by judging the fan speed, the actual frosting amount of the evaporator can be directly determined. When the perceived fan speed is reduced to a certain low speed, it means that there are many evaporators, and it is necessary to start the defrosting in time. Therefore, the problem of large energy consumption and poor preservation caused by the conventional defrosting or delaying defrosting by the conventional control method can be solved, and the energy saving and fresh-keeping effect of the air-cooled refrigerator is improved.

DRAWINGS

1 is a schematic flow chart of determining evaporator defrosting according to a fan speed according to an embodiment of the present application;

2 is a schematic flow chart of a method for controlling defrosting of an air-cooled refrigerator according to an embodiment of the present application;

3 is a schematic structural diagram of a controller in an embodiment of the present application;

4 is a schematic structural view of a control system for defrosting an air-cooled refrigerator according to an embodiment of the present application.

detailed description

The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the application, but are not intended to limit the scope of the application.

In the description of the embodiments of the present application, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be, for example, a fixed connection or a Removable connection, or integral connection; may be mechanical connection or electrical connection; may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication between the two elements. "First", "second", "third" and "fourth" do not represent any sequence relationship, but are merely for convenience of description. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood on a case-by-case basis. "Current" At the moment when an action is performed, multiple currents appear in the text, all of which are recorded in real time as time passes.

Based on the problem that the defrosting timing of the air-cooled refrigerator does not correspond to the actual frosting of the evaporator, the embodiment of the present application provides a control method for the defrosting of the air-cooled refrigerator, a control system for the chilling of the air-cooled refrigerator, a controller, and an air-cooled refrigerator.

The products, methods, etc. will be described in detail through basic design, extended design and replacement design.

In the air-cooled refrigerator, the evaporator maintains the low temperature to provide the cooling capacity during the cooling process. In the initial stage, the evaporator has less frost, the evaporator has less resistance to gas flow, the gas flow in the air passage is smoother, and the fan maintains a certain speed; With the extension of the cooling time or the increase of the wet load of the food, the frost on the evaporator will increase, the degree of the evaporator will be blocked, and the wind resistance of the air duct will increase. The speed of the fan will be reduced. When inferring from this principle, the fan speed can reflect the actual frosting of the evaporator.

Based on the above principle, the embodiment of the present application provides an air-cooled refrigerator defrosting control method for determining the frosting amount of the evaporator according to the fan speed, and further determining whether the evaporator needs defrosting, as shown in FIG. 1 , which includes:

Step 01, collecting the fan speed R in the stable operation of the refrigerator;

The corresponding relationship between fan speed and evaporator frosting needs to be established under the condition of stable operation of the refrigerator, and eliminate the influence of fan speed and evaporator frosting during any abnormal operation.

Step 02, determining whether the fan speed R is less than or equal to the preset speed Rmin;

When the evaporator is frosted, the evaporator causes resistance to the gas flow, and the fan speed is affected. As the frosting amount increases, the fan speed gradually decreases. When the preset speed Rmin is reached, the evaporator frosting amount is sufficiently large. Defrost needs to be performed in time, that is, if the judgment result is yes (less than or equal to), the defrosting operation is performed; if the judgment result is no (greater than), the process returns to step 01.

Steps 01 and 02 give the operation mode of effective defrosting based on the actual frosting amount of the evaporator, which effectively solves the problem of large energy consumption and poor preservation caused by the conventional defrosting or delaying defrosting of the conventional control method, and improves the wind. The energy saving and fresh-keeping effect of the cold refrigerator.

The following is a more specific control method combined with the overall flow of air-cooled refrigerator defrosting, as shown in Figure 2:

Step 110, collected _before _{and after} the refrigerator fan speed R before and after the preset period of time and the fan speed R;

Determine whether the refrigerator is operating normally and stably through the change of the fan speed in a short period of time. The preset time period can be selected as a few seconds, such as 5 seconds.

Since the refrigerator is in different working states (such as in an unstable operation state, defrosting state, judging whether a defrosting state is required, etc.), this step and the full text repeatedly mention that the fan speed is real-time acquisition. The operation of the fan is controlled by the main control board of the refrigerator (also called the controller). The fan and the main control board are connected to the electric control loop. The fan runs at the rated voltage, and the operation signal of the fan is transmitted back to the main control board through the electronic control loop. The fan speed is determined after the control panel is analyzed. This embodiment only provides a method for collecting the fan speed. In other embodiments, the fan speed can also be collected in various manners provided in the prior art.

Step 112, the absolute value of the difference between the determined rotational speed of _{the front} fan and the _rear fan speed R is less than or equal to △ R R;

If the judgment result is yes (less than or equal to), it is determined that the refrigerator is stably operated.

If the result of the determination is no (greater than), then step 110 is continued.

Steps 110 and 112 are used to determine whether the refrigerator is stably operated. Once it is determined that the refrigerator is stably operated, the determination of the evaporator frost amount is entered.

Step 114, collecting the fan speed R in the stable operation of the refrigerator;

Step 116, determining whether the fan speed R is less than or equal to the preset speed Rmin;

If the result of the determination is YES (less than or equal to), the defrosting operation is performed, the defrosting unit is activated to defoase the evaporator, and the defrosting water is discharged through the drain.

If the structure is judged to be no (greater than), then return to step 114 to continue collecting the fan speed in real time.

There are various defrosting treatment methods, such as return air defrosting and heating defrosting. In the present embodiment, a defrosting operation is performed using a heater provided on the evaporator.

It should be noted that step 114 and step 116 are specific steps for determining the amount of frost formed by the evaporator and determining whether the evaporator needs defrosting. This step can be performed in real time in the air-cooled refrigerator cooling mode, or it can be collected and judged at a preset frequency.

Step 118, in the defrosting operation, collecting the evaporator temperature T;

Step 120: Determine whether the evaporator temperature T reaches a preset defrosting temperature T _preset ;

If the judgment result is yes (achieve), the defrosting is stopped,

If the judgment result is no (not reached), the defrosting is continued.

The temperature of the evaporator after frosting or defrosting is usually higher than a certain temperature, thereby judging whether the evaporator has been defrosted, and the defrosting is terminated in time to save energy. Therefore, it is judged whether or not the evaporator defrosting is terminated by the change in the evaporator temperature. On the other hand, it is necessary to explain the evaporator temperature drop after the evaporator is frosted, and the evaporator temperature sensor can be collected in real time, but the temperature change of the evaporator cannot reflect the frosting amount and the frosting thickness.

The present technology provides a control method for determining the frosting amount of the evaporator according to the fan speed, and then controlling the defrosting operation. The method can also be combined with the number and duration of the door opening and closing of the refrigerator, the quantity and type of food stored in the refrigerator, and the temperature change of the cooling compartment. Combined with the defrosting judgment.

Next, a controller for performing the above-described control method of the air-cooled refrigerator defrosting is given. As shown in FIG. 3, the controller can be loaded into the electronic control board of the refrigerator in the form of a software program or a hardware device.

The controller comprises: a data receiving module, a judging module and a signal sending module, wherein the data receiving module and the signal sending module are all connected with the judging module. a data receiving module, configured to obtain an evaporator temperature and a fan speed of the refrigerator in different states; a determining module, configured to determine, according to the upper control method, whether the refrigerator needs defrosting according to the fan speed or determine whether the refrigerator stops the defrosting operation according to the evaporator temperature; The signal sending module is configured to send the determination result made by the determining module to the defrosting component of the refrigerator, and the determination result includes: starting defrosting, not starting defrosting, continuing defrosting, stopping defrosting.

The fan speed mentioned here includes the speed values collected in real time in various states in steps 110-120.

In some embodiments, the data receiving module, the determining module, and the signal transmitting module may be split into smaller unit components according to a function or a structural design to refine the functions of the unit components.

The embodiment of the present application further provides a control system for defrosting the air-cooled refrigerator, as shown in FIG. 4, which includes: a fan, a defrosting component, and the controller disposed in the air duct of the box; the controller is respectively electrically controlled The circuit is connected to the fan and the defrosting component, the controller detects the fan speed, and determines whether the defrosting component is activated according to the fan speed.

The evaporator sensor is electrically connected to the controller for detecting the evaporator temperature; in the defrosting operation of the defrosting component, the controller determines whether the defrosting component stops the defrosting operation according to the evaporator temperature detected by the evaporator sensor.

The defrosting assembly includes a heater disposed at the bottom of the evaporator, and the defrosting water of the evaporator flows into the water collection box below the evaporator, and then drains away with the drain pipe.

The embodiment of the present application further provides a computer device, including a memory, a processor, and a computer program stored on the memory and operable on the processor, where the processor executes the computer program Control method.

In this technical solution, the computer program for executing the above-described control method of the air-cooled refrigerator defrosting is stored in the memory, and when the processor executes the computer program, the evaporator frosting condition can be accurately determined and defrosted in time.

The embodiment of the present application further provides a computer readable storage medium, on which a computer program is stored, and the computer program is implemented when the processing is executed.

In this technical solution, the processor implements the above-described method of controlling the defrosting of the air-cooled refrigerator by a computer program, which needs to be stored in a computer readable medium. This computer readable medium ensures that the computer program can be executed by the processor, thereby accurately determining the degree of frosting of the refrigerator evaporator, avoiding frost defrosting or delaying defrosting.

An embodiment of the present application further provides an air-cooled refrigerator including a tank air duct, a compressor, a condenser, a capillary, an evaporator, and a control system;

The compressor, the condenser, the capillary tube and the evaporator form a refrigerant circulation loop; the evaporator is disposed in the air duct of the tank, and the evaporator is located upstream of the fan in the air flow path of the tank air passage.

When the compartment is cooled, the compressor is operated, the refrigerant is condensed, and then the throttling of the capillary becomes a low-temperature low-pressure refrigerant, and then flows through the evaporator to heat exchange, the evaporator temperature is lowered, and the freezing fan in the air duct is also running. The cold volume of the evaporator is taken out to the tank through the air outlet. At the same time, the evaporator absorbs the moisture-integrated frost in the tank during the cooling process, and the frost adheres to the evaporator fins and the pipe surface. During the cooling process, the evaporator maintains the low temperature to provide the cooling capacity, and the refrigeration fan gives the rated voltage to run through the main control board, and the return air is sent out through the evaporator heat exchange, and is sent out to the tank through the air outlet. In the initial stage, due to less frost on the evaporator, less resistance of the evaporator, and less wind resistance in the air duct, the fan maintains a certain speed under this condition; as the cooling time is extended or the wet load of the food is increased, evaporation There are more and more frost on the device, and the degree of blockage of the evaporator is increased, the wind resistance of the air duct increases. Under this condition, since the voltage supplied to the fan by the main board remains unchanged, the speed of the fan will decrease, and the speed of the fan passes. The electronic control loop is fed back to the main board. When the main board senses that the fan speed has decreased to a certain low speed, it means that it needs to be defrost. When the defrosting timing is reached, the defrosting heater at the bottom of the evaporator starts heating, so that the frost on the evaporator is turned into water and flows out through the drain pipe to the outside of the refrigerator to volatilize. When the defrosting sensor senses reaching the defrosting exit temperature, the defrosting heat is heated. Stop and the defrosting is completed.

In the embodiment of the present application, the actual frost amount of the refrigerator evaporator is determined by the control rule, and when the actual frosting amount is large, the defrosting is started in time, which can solve the problem that the conventional control method has large energy consumption and poor preservation caused by pre-defrosting or delaying defrosting. The problem has improved the energy saving and preservation effect of the air-cooled refrigerator.

The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application are included in the scope of protection of the present application. within.

Claims

A method for controlling defrosting of an air-cooled refrigerator, characterized in that it comprises:

Collecting the fan speed R during stable operation of the refrigerator;

Determining whether the fan speed R is less than or equal to the preset speed Rmin;

If the result of the determination is YES, the defrosting operation is performed.
The method of controlling defrosting of an air-cooled refrigerator according to claim 1, wherein the defrosting operation employs a heater defrosting.
The method for controlling defrosting of an air-cooled refrigerator according to claim 1, wherein the fan speed is collected by operating the fan at a rated voltage, and determining a fan speed by detecting a feedback signal of the electronic control loop of the fan.
The method of controlling the defrosting of an air-cooled refrigerator according to claim 1, wherein after the performing the defrosting operation, the control method further comprises:

Collecting evaporator temperature;

Determining whether the evaporator temperature reaches a preset defrosting temperature;

If the result of the determination is YES, the defrosting is stopped.
The control method for the defrosting of the air-cooled refrigerator according to any one of claims 1 to 4, wherein the control method further comprises: before the collecting of the fan speed R in the stable operation of the refrigerator, the control method further comprises:

Before collecting the refrigerator fan speed R and the preset period of time before and after the R fan speed;

Analyzing the difference between the front fan speed R of fan speed R and the absolute value is less than or equal to △ R;

If the judgment result is YES, it is determined that the refrigerator is stably operated.
A controller for controlling a defrosting of an air-cooled refrigerator according to any one of claims 1 to 5, characterized in that it comprises:

a data receiving module, configured to obtain an evaporator temperature and a fan speed of the refrigerator;

a determining module, configured to execute the control method according to any one of claims 1-5;

The signal sending module is configured to send the determination result made by the determining module to the defrosting component of the refrigerator, and the determining result includes: starting defrosting, not starting defrosting, continuing defrosting, stopping defrosting.
A control system for defrosting an air-cooled refrigerator, comprising: a fan, a defrosting assembly, and the controller according to claim 6, wherein the fan is disposed in a casing air duct;

The controller is respectively connected to the fan and the defrosting component through an electronic control loop, the controller detects a fan speed, and determines whether the defrosting component is activated according to the fan speed.
A control system for defrosting an air-cooled refrigerator according to claim 7, further comprising: an evaporator sensor, said evaporator sensor being electrically connected to said controller for detecting an evaporator temperature;

In the defrosting operation of the defrosting assembly, the controller determines whether the defrosting assembly stops the defrosting operation according to the evaporator temperature detected by the evaporator sensor.
A control system for defrosting an air-cooled refrigerator according to claim 7, wherein said defrosting assembly comprises a heater disposed at the bottom of the evaporator.
A computer apparatus comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein the processor executes the computer program as claimed in claim 1 The control method according to any one of the preceding claims.
A computer readable storage medium having stored thereon a computer program, wherein the computer program is processed to perform the control method according to any one of claims 1-5.
An air-cooled refrigerator, comprising: a tank air duct, a compressor, a condenser, a capillary tube, an evaporator, and the control system according to any one of claims 7-9;

The compressor, the condenser, the capillary tube, and the evaporator constitute a refrigerant circulation circuit; the evaporator is disposed in a tank air passage.