WO2024012133A1

WO2024012133A1 - Freezing-prevention control method for refrigerating chamber of refrigerator, and refrigerator

Info

Publication number: WO2024012133A1
Application number: PCT/CN2023/100050
Authority: WO
Inventors: 余宽; 孙贤; 朱成鹏; 陈正旋; 王诗龙
Original assignee: 合肥海尔电冰箱有限公司; 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2022-07-14
Filing date: 2023-06-14
Publication date: 2024-01-18
Also published as: CN117433226A

Abstract

A freezing-prevention control method for a refrigerating chamber of a refrigerator, and a refrigerator, which belong to the technical field of refrigerator control. The freezing-prevention control method comprises: acquiring a refrigeration level of a variable-temperature space; when the refrigeration level of the variable-temperature space is a preset level, acquiring an environment parameter of a refrigerator operation environment; determining whether the environment parameter meets a preset freezing-prevention start condition; and if the environment parameter meets the preset freezing-prevention start condition, during a refrigeration process of a refrigeration chamber, starting a compensation heating wire provided in the refrigeration chamber. The freezing-prevention control method and the refrigerator can prevent a refrigeration chamber provided with a variable-temperature space from freezing.

Description

Anti-icing control method for refrigerator cold room and refrigerator

This application claims the priority of a Chinese patent application with an application date of July 14, 2022, an application number of 202210833696.0, and an invention title of "An anti-icing control method for a refrigerator cold room and a refrigerator", the entire content of which is incorporated by reference. incorporated in this application.

Technical field

The present invention relates to the technical field of refrigerator control, and in particular to an anti-icing control method for a refrigerator cold room and a refrigerator.

Background technique

In order to meet the user's demand for refrigerator temperature, existing refrigerator products generally have drawers (with air ducts for separate air supply) in the refrigerator compartment as a variable temperature space, which can change the temperature range of the greenhouse (-5°C to 6°C). , variable temperature ranges include: treasure (6℃), maternal and infant (4℃), soft freezing (-5℃), etc. In national standards, the maximum range of normal use of refrigerators is 10°C to 43°C. However, in actual use by users, the ambient temperature often falls below 5°C or even below 0°C in winter. At lower ambient temperatures beyond the normal operating range of the refrigerator, the temperature of the refrigerator compartment will be low, and the refrigerator compartment with a variable temperature drawer will cause the bottom temperature of the refrigerator compartment to be lower than the air temperature of the refrigerator compartment, and even cause the refrigerator compartment to become colder. The bottom temperature is below 0℃.

For refrigerators with variable temperature drawers, when the variable temperature drawer space is set to the "soft freezing" position (the temperature of the variable temperature drawer is around -3°C), the bottom surface of the refrigerator box can easily fall below 0°C. At this time, the temperature in the refrigerator compartment Water vapor will condense on the bottom surface of the container, causing ice to form on the bottom of the refrigerator compartment. If vegetables and fruits come into contact with the bottom of the box during storage, the fruits and vegetables will freeze. At the same time, due to ice formation at the bottom of the refrigerator compartment, the demand for cooling capacity in the refrigerator will increase, which will increase the power consumption of the refrigerator and affect customers. use.

Contents of the invention

An object of the first aspect of the present invention is to provide an anti-icing control method that can prevent freezing in a refrigerator compartment provided with a variable temperature space.

A further object of the present invention is to reduce power consumption.

A further object of the present invention is to improve the accuracy of control.

An object of a second aspect of the present invention is to provide a refrigerator for performing the above anti-icing control method.

In particular, the present invention provides an anti-icing control method for a refrigerator refrigerating chamber, which is used to prevent the refrigerating chamber provided with a variable temperature space from freezing. The method includes:

Obtain the cooling gear of the variable temperature space;

When the refrigeration gear of the variable temperature space is a preset gear, environmental parameters of the operating environment of the refrigerator are obtained; wherein the preset gear is used to set the set temperature of the variable temperature space to a preset level. Set temperature;

Determine whether the environmental parameters meet the preset anti-icing starting conditions;

If so, the compensation heating wire provided in the refrigerator compartment is activated during the cooling process of the refrigerator compartment.

Optionally, the environmental parameters include ambient temperature and ambient humidity;

The preset anti-icing starting conditions include that the ambient temperature is greater than or equal to a first temperature threshold and the ambient humidity is greater than or equal to a humidity threshold.

Optionally, anti-icing control methods also include:

When the ambient temperature is less than the first temperature threshold, the compensation heating wire provided in the refrigerator compartment is started during the cooling process of the refrigerator compartment.

Optionally, after the step of activating the compensation heating wire provided in the refrigerator compartment during cooling of the refrigerator compartment, the step further includes:

Determine whether the ambient temperature is less than a second temperature threshold;

If so, the cooling fan is controlled to stop working, and the compensation heating wire continues to work;

Otherwise, the cooling fan and the evaporator fan are controlled to reduce their rotational speeds, and the compensation heating wire continues to work.

Optionally, anti-icing control methods also include:

When the ambient temperature is greater than or equal to the first temperature threshold, the cooling gear of the variable temperature space is the preset gear, and the ambient humidity is less than the humidity threshold, the compensation heating wire is controlled to periodically turn on and off. closure.

Optionally, the time the compensation heating wire is turned on is greater than the time it is turned off.

Optionally, when the ambient temperature is greater than or equal to the first temperature threshold, the cooling gear of the variable temperature space is the preset gear, and the ambient humidity is less than the humidity threshold, the compensation heating wire period is controlled Following the steps for permanently turning on and off include:

The compressor is controlled to operate according to the ambient temperature and the rotation speed corresponding to the refrigeration gear, the cooling fan and the evaporator fan are operated according to the rotation speed of the compressor, and the damper of the air supply duct is operated according to the rotation speed of the refrigerator compartment. The temperature and the temperature opening and closing of the variable temperature space.

Optionally, anti-icing control methods also include:

When the ambient temperature is greater than or equal to the first temperature threshold and the cooling gear of the variable temperature space is not the preset gear, the compensation heating wire is controlled to work according to the freezing gear and the ambient temperature.

Optionally, the first temperature threshold is any value from 9 to 12°C, the second temperature threshold is any value from 6 to 8°C, and the preset temperature is -7°C to 0°C. Any value between 75% and 85%.

In particular, the present invention also provides a refrigerator, including a controller. The controller includes a memory and a processor. A control program is stored in the memory. When the control program is executed by the processor, it is used to implement According to the above The anti-icing control method described in any one of the above.

According to an embodiment of the present invention, an anti-icing control method is provided. When the variable temperature space is at a preset level and the environmental parameters meet the preset anti-icing starting conditions, the compensation heating wire is controlled to work (i.e., the power is normally on). Turning on) can prevent the refrigerator gallbladder from freezing, increase the cooling capacity demand of the refrigerator compartment, which will lead to an increase in the refrigerator's power consumption, and prevent freezing of food due to ice forming at the bottom of the refrigerator compartment, thus meeting the user's needs.

According to an embodiment of the present invention, the compensation heating wire is also controlled to work when the ambient temperature is too low, thereby preventing the refrigerator gallbladder from freezing.

According to one embodiment of the present invention, while the compensation heating wire is controlled to continue working, the cooling fan, evaporator fan, damper and compressor of the refrigerator operate according to normal logic. Therefore, it is possible to avoid freezing of the refrigerator gallbladder while ensuring the refrigeration demand of the refrigerator compartment.

According to an embodiment of the present invention, when the ambient temperature drops below the second temperature threshold, the cold storage compartment of the refrigerator is prone to freezing. At this time, the cooling fan is directly controlled to stop working, reducing the cooling capacity of the condenser, and at the same time, the heating wire is compensated Continuously working to quickly reduce the cooling capacity of the refrigerator compartment so that the refrigerator compartment will not be overcooled, thereby preventing freezing in the refrigerator compartment.

Further, when there is a risk of freezing in the refrigerator compartment, but the ambient temperature is higher than the second temperature threshold, it means that the risk of freezing in the refrigerator compartment is not very high. At this time, the speed of the cooling fan and the evaporator fan is reduced, and the control The compensation heating wire continues to work, reducing the amount of cold energy entering the refrigerator compartment, which can effectively prevent the refrigerator compartment from freezing under such working conditions.

According to one embodiment of the present invention, the refrigeration level of the variable temperature space is a preset level, so there is still a risk of freezing in the refrigerator compartment. However, since the ambient temperature is normal and the ambient humidity is not too low, the refrigerator compartment freezes. The risk of ice is low. At this time, controlling the compensation heating wire to turn on and off intermittently can achieve the purpose of preventing freezing in the refrigerator compartment. This control method without continuously turning on the compensation heating wire can also save electricity.

According to one embodiment of the present invention, by comprehensively considering the parameters of ambient temperature, ambient humidity, and the refrigeration gear of the variable-temperature space, as well as changes in these parameters, the risk of freezing in the refrigerator compartment is estimated, and then the compensation heating wire, cooling The fan and evaporator fan operate with different parameters, which can provide precise control to prevent freezing in the refrigerator compartment, thereby improving the performance and user experience of the refrigerator.

From the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will further understand the above and other objects, advantages and features of the present invention.

Description of drawings

Some specific embodiments of the invention will be described in detail below by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar parts or portions. Those skilled in the art will understand that these The drawings are not necessarily drawn to scale. In the attached picture:

Figure 1 is a flow chart of an anti-icing control method according to an embodiment of the present invention;

Figure 2 is a flow chart of an anti-icing control method according to another embodiment of the present invention;

Figure 3 is a schematic structural diagram of a refrigerator controller according to an embodiment of the present invention.

Detailed ways

In the description of this embodiment, reference to the description of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like is meant to be combined with the description. An embodiment or example describes a specific feature, structure, material, or characteristic that is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Unless otherwise defined, all terms (including technical terms and scientific terms) used in the description of this embodiment have the same meanings as commonly understood by a person of ordinary skill in the technical field to which this application belongs.

The control method of the present invention is suitable for refrigerators equipped with a variable temperature space in the cold storage room. This refrigerator uses air cooling. There is a compensation heating wire installed in the cold storage room, which generates heat to heat the cold storage room when the power is on. Figure 1 is a flow chart of an anti-icing control method in one embodiment of the present invention. The present invention provides an anti-icing control method for preventing freezing in a refrigerator room provided with a variable temperature space. The variable temperature space can appear in the form of a variable temperature drawer, which is generally provided with multiple stalls to meet fresh-keeping storage requirements at different temperatures. . As shown in Figure 1, in one embodiment, the anti-icing control method includes:

Step S100: Obtain the cooling gear of the variable temperature space. The cooling level of the variable temperature space can be obtained from the communication network inside the refrigerator through the refrigerator controller.

Step S200, when the cooling gear of the variable temperature space is a preset gear, obtain the environmental parameters of the operating environment of the refrigerator. Among them, the preset gear is used to set the set temperature of the variable temperature space to the preset temperature. The default setting is a setting that easily causes freezing in the refrigerator compartment, such as the "soft freezing" setting (generally corresponding to -3°C). Environmental parameters may include parameters such as ambient temperature and ambient humidity.

Step S300: Determine whether the environmental parameters meet the preset anti-icing start conditions. If so, proceed to step S400. That is, it is determined whether the operating environment of the refrigerator at this time is likely to cause freezing in the refrigerator compartment.

Step S400, during the process of cooling the refrigerator compartment, start the compensation heating wire installed in the refrigerator compartment.

In this embodiment, when the variable temperature space is in a preset position and the environmental parameters meet the preset anti-icing start conditions, the compensation heating wire is controlled to work (i.e., normally open when powered on), which can avoid freezing of the refrigerator gallbladder and freezing of the refrigerator compartment. It can solve problems such as increased power consumption of the refrigerator caused by the increase in volume demand, prevent freezing of food due to freezing at the bottom of the refrigerator compartment, and thus meet user needs.

In a further embodiment, the environmental parameters include ambient temperature and ambient humidity. The preset anti-icing starting conditions include that the ambient temperature is greater than or equal to the first temperature threshold and the ambient humidity is greater than or equal to the humidity threshold. The ambient temperature AT and ambient humidity RH can be detected by setting the temperature sensor and humidity sensor, and then sent to the controller of the air conditioner.

When the ambient temperature AT is greater than or equal to the first temperature threshold AT1, the refrigeration gear of the variable temperature space is the preset gear, and the ambient humidity RH is greater than or equal to the humidity threshold RH1, the compensation heating wire of the refrigeration room is controlled to continue to work. Here, being lower than the first temperature threshold AT1 indicates whether the ambient temperature AT is in a relatively cold state, and being higher than the first temperature threshold AT1 indicates that the refrigerator is at a normal ambient temperature AT. Higher than the humidity threshold RH1 means that the external environment humidity RH is high, which will increase the risk of freezing in the refrigerator. That is, being higher than the humidity threshold RH1 will affect the insulation effect of the refrigerator. At this time, the compressor speed will increase, thereby improving the refrigerator The increase in cooling capacity will cause the temperature of the variable temperature space in the refrigerator to be lower, which will increase the risk of freezing in the refrigerator. Optionally, the first temperature threshold AT1 is any value from 9 to 12°C. For example, the first temperature threshold AT1 may be 9°C, 10°C or 12°C. The preset temperature is any value between -7°C and 0°C. For example, the preset temperature may be -7°C, -3°C or 0°C. The humidity threshold RH1 is any value between 75% and 85%. For example, the humidity threshold RH1 may be 75%, 80% or 85%.

Figure 2 is a flow chart of an anti-icing control method in another embodiment of the present invention. As shown in Figure 2, in another embodiment, the anti-icing control method includes:

Step 80: Obtain the ambient temperature AT, ambient humidity RH and the cooling gear of the variable temperature space.

Step S120: Determine whether the ambient temperature AT is less than the first temperature threshold AT1. If so, proceed to step S500; otherwise, proceed to step S140.

Step S140: Determine whether the cooling gear of the variable temperature space is a preset gear. If so, proceed to step S160.

Step S160: Determine whether the ambient humidity RH is less than the humidity threshold RH1. If not, proceed to step S400.

Step S500: When the ambient temperature AT is less than the first temperature threshold AT1, the compensation heating wire is started during the cooling process of the refrigerator compartment.

This embodiment also controls the operation of the compensation heating wire when the ambient temperature AT is too low, thereby preventing the refrigerator gallbladder from freezing.

It should be noted that while steps S400 and S500 control the compensation heating wire to continue working, the cooling fan, evaporator fan, damper and compressor of the refrigerator operate according to normal logic. Therefore, it is possible to ensure the refrigeration demand of the refrigerator compartment and at the same time prevent the refrigerator gallbladder from freezing. The normal logic here is: control the compressor to operate according to the rotation speed corresponding to the ambient temperature AT and the refrigeration gear of the variable temperature space, control the cooling fan and evaporator fan to operate according to the rotation speed of the compressor, and control the damper of the air supply duct according to the refrigeration speed. The temperature of the room and the temperature of the variable temperature space are opened and closed, that is, the air door is opened when the temperature of the cold storage room or the variable temperature space reaches their respective start-up points (the start-up point can be the condition or time indicating that the cold room or the variable temperature room needs cooling), otherwise Just close the damper. The cooling fan refers to the condenser and pressure of the refrigerator. The fan used for compressor cooling, the evaporator fan refers to the fan installed in the air duct to guide the cold energy of the evaporator to the freezer and refrigerator compartments.

As shown in Figure 2, in a further embodiment, after step S400 and step S500, the following steps are also included:

Step S610: Determine whether the ambient temperature AT is less than the second temperature threshold AT2. If so, proceed to step S420; otherwise, proceed to step S430. The second temperature threshold AT2 is any value from 6 to 8°C. The second temperature threshold AT2 may be 6°C, 7°C or 8°C.

Step S620: Control the cooling fan to stop working, and the compensation heating wire continues to work.

Step S630: Control the cooling fan and the evaporator fan to reduce their rotational speeds to compensate for the continuous operation of the heating wire.

In step S630, the cooling fan and the evaporator fan can be directly reduced to the lowest level. For example, both the cooling fan and the evaporator fan have 5 speed gears, which are represented by duty cycles: gear one to gear five correspond to duty cycles of 40%, 60%, 70%, 80% and 90%. When the environment When the temperature AT is between the first temperature threshold AT1 and the second temperature threshold AT2, the speeds of both the cooling fan and the evaporator fan are controlled to be reduced to first gear. Of course, in other embodiments, different speed gears can also be adapted according to the specific ambient temperature AT. Of course, for fans with stepless speed regulation, each duty cycle can be directly matched.

Steps S620 and S630 both determine that there may be a risk of freezing in the refrigerator compartment (including the risk of freezing caused by the ambient humidity RH and the temperature-changing space in step S400, and the risk of freezing caused by the low ambient temperature AT in step S500). (ice risk). Furthermore, at this time, if the ambient temperature AT is less than the second temperature threshold AT2, it means that there is a high risk of icing, and if the ambient temperature AT is greater than or equal to the second temperature threshold AT2, it means that there is a certain risk of icing. However, The risk is not as high as when the ambient temperature AT is lower than the second temperature threshold AT2.

The operation of the cooling fan is mainly to ensure good heat dissipation of the condenser in the refrigerator refrigeration system. Good heat dissipation of the condenser can increase its cooling capacity. However, when the ambient temperature AT is too low, the operation of the cooling fan will cause excessive condensation of the refrigerant, causing it to be stored in the condenser in the form of liquid, resulting in an insufficient amount of refrigerant circulating in the cooling system, making the cooling effect very poor. Does not meet design requirements.

In this embodiment, when the ambient temperature AT drops below the second temperature threshold AT2, the refrigerator compartment of the refrigerator is likely to freeze. At this time, the cooling fan can be directly controlled to stop working, reducing the cooling capacity of the condenser; at the same time, the compensation heating wire Continuously working to quickly reduce the cooling capacity of the refrigerator compartment so that the refrigerator compartment will not be overcooled, thereby preventing freezing in the refrigerator compartment.

Furthermore, when there is a risk of freezing in the refrigerator compartment, but the ambient temperature AT is higher than the second temperature threshold AT2, it means that the risk of freezing in the refrigerator compartment is not very high. At this time, by reducing the speed of the cooling fan and the evaporator fan, And the compensation heating wire is controlled to continue working, so that the cold amount entering the cold room is reduced, which can effectively prevent the cold room from freezing under such working conditions.

Of course, in step S620, other components still work according to normal control logic, that is, the evaporator fan, damper and compressor work according to normal logic. Similarly, in step S630, the damper and compressor also operate according to normal logic. Thereby ensuring the refrigeration needs of the cold room.

In a further embodiment, as shown in Figure 2, the anti-icing control method further includes after step S160:

Step S700, when the ambient temperature AT is greater than or equal to the first temperature threshold AT1, the cooling gear of the variable temperature space is the preset gear, and the ambient humidity RH is less than the humidity threshold RH1, control the compensation heating wire to turn on and off periodically.

In this embodiment, the refrigeration level of the variable temperature space is a preset level, so there is still a risk of causing the refrigerator compartment to freeze. However, since the ambient temperature AT is normal and the ambient humidity RH is not too low, the risk of freezing in the refrigerator compartment is low. At this time, controlling the compensation heating wire to turn on and off intermittently can achieve the purpose of preventing freezing in the refrigerator compartment. . This control method without continuously turning on the compensation heating wire can also save electricity.

In one embodiment, the time the compensation heating wire is on is greater than the time it is off. For example, the compensation heating wire is turned on for 60 seconds and turned off for 40 seconds. This periodic repetition can ensure the heating effect of the refrigerator compartment. Of course, during this process, the working time of the compensation heating wire can also be adjusted according to the temperature changes of the refrigerator compartment and the variable temperature space, so as to prevent the refrigerator compartment from freezing more accurately. In other embodiments, the startup time and shutdown time of the compensation heating wire can also be other values, and are not limited to fixed values and fixed size relationships. That is, in some embodiments, the startup time of the compensation heating wire can also be less than The closing time is not limited here.

Further, after step S700, it also includes:

Step S720, control the compressor to operate according to the ambient temperature AT and the rotation speed corresponding to the refrigeration gear, the cooling fan and the evaporator fan to operate according to the rotation speed of the compressor, and the damper of the air supply duct to open according to the temperature of the refrigerator compartment and the temperature of the variable temperature space. close.

Step S720 is to control the cooling fan, evaporator fan, damper and compressor to operate according to normal logic. This is the conventional control logic of refrigerator refrigeration and will not be described in detail here.

In the above process, by comprehensively considering the parameters of ambient temperature AT, ambient humidity RH, and the cooling gear of the variable temperature space as well as changes in these parameters, the risk of freezing in the cold storage room is estimated, and then the compensation heating wire and cooling fan are controlled. , the evaporator fan operates with different parameters, which can achieve precise control to prevent freezing in the refrigerator compartment, thereby improving the performance and user experience of the refrigerator.

In a further embodiment, step S140 also includes:

Step S800: When the ambient temperature AT is greater than or equal to the first temperature threshold AT1 and the cooling gear of the variable temperature space is not the preset gear, the compensation heating wire is controlled to work according to the freezing gear and the ambient temperature AT.

At this time, there is no risk of freezing in the refrigerator compartment due to the overcooling of the variable temperature space. All components (including the compensation heating wire) can be controlled to work according to normal logic. That is, the compensation heating wire adjusts according to the freezing level and environment. Temperature AT works, the compressor operates according to the ambient temperature AT and the rotation speed corresponding to the refrigeration gear. The cooling fan and evaporator fan operate according to the rotation speed of the compressor. The damper of the air supply duct opens according to the temperature of the refrigerator room and the temperature of the variable temperature space. close.

FIG. 3 is a schematic structural diagram of the refrigerator controller 100 in one embodiment of the present invention. The present invention also provides a refrigerator, as shown in Figure 3. In one embodiment, the refrigerator includes a controller 100. The controller 100 includes a memory 120 and a processor 110. The memory 120 stores a control program 122. The control program 122 When executed by the processor 110, it is used to implement the anti-icing control method in any of the above embodiments or a combination of embodiments.

The processor can be a central processing unit (CPU for short), or a digital processing unit, etc. The processor sends and receives data through the communication interface. Memory is used to store programs executed by the processor. A memory is any medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer. It can also be a combination of multiple memories. The above-mentioned computing program can be downloaded from a computer-readable storage medium to a corresponding computing device/processing device, or to a computer or external storage device via a network (such as the Internet, a local area network, a wide area network and/or a wireless network).

In this embodiment, the controller of the refrigerator is used to control the operation of the compensation heating wire (i.e., normally open when the power is on) when the ambient temperature is normal, the ambient humidity is high, and the variable temperature space is at a lower temperature preset level to avoid gallbladder formation in the refrigerator. The increase in the cooling capacity of the ice and cold storage compartments will lead to an increase in the power consumption of the refrigerator, preventing freezing of food due to freezing at the bottom of the refrigerator compartment, thereby meeting user needs.

By now, those skilled in the art will appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, the disclosed embodiments may still be practiced in accordance with the present invention without departing from the spirit and scope of the present invention. The content directly identifies or leads to many other variations or modifications consistent with the principles of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

An anti-icing control method for a refrigerator refrigerating chamber, used to prevent freezing in a refrigerating chamber provided with a variable temperature space, characterized in that the method includes:

Obtain the cooling gear of the variable temperature space;

When the refrigeration gear of the variable temperature space is a preset gear, environmental parameters of the operating environment of the refrigerator are obtained; wherein the preset gear is used to set the set temperature of the variable temperature space to a preset level. Set temperature;

Determine whether the environmental parameters meet the preset anti-icing starting conditions;

If so, the compensation heating wire provided in the refrigerator compartment is activated during the cooling process of the refrigerator compartment.
The anti-icing control method according to claim 1, characterized in that:

The environmental parameters include ambient temperature and ambient humidity;

The preset anti-icing starting conditions include that the ambient temperature is greater than or equal to a first temperature threshold and the ambient humidity is greater than or equal to a humidity threshold.
The anti-icing control method according to claim 2, further comprising:

When the ambient temperature is less than the first temperature threshold, the compensation heating wire provided in the refrigerator compartment is started during the cooling process of the refrigerator compartment.
The anti-icing control method according to claim 1, characterized in that, after the step of activating the compensation heating wire provided in the refrigeration chamber during the cooling of the refrigeration chamber, it further includes:

Determine whether the ambient temperature is less than a second temperature threshold;

If so, the cooling fan is controlled to stop working, and the compensation heating wire continues to work;

Otherwise, the cooling fan and the evaporator fan are controlled to reduce their rotational speeds, and the compensation heating wire continues to work.
The anti-icing control method according to claim 4, further comprising:

When the ambient temperature is greater than or equal to the first temperature threshold, the cooling gear of the variable temperature space is the preset gear, and the ambient humidity is less than the humidity threshold, the compensation heating wire is controlled to periodically turn on and off. closure.
The anti-icing control method according to claim 5, characterized in that:

The time when the compensation heating wire is turned on is greater than the time when it is turned off.
The anti-icing control method according to claim 5, characterized in that when the ambient temperature is greater than or equal to the first temperature threshold, the cooling gear of the variable temperature space is the preset gear, and the environment When the humidity is less than the humidity threshold, the step of controlling the compensation heating wire to turn on and off periodically also includes:

The compressor is controlled to operate according to the ambient temperature and the rotation speed corresponding to the refrigeration gear, the cooling fan and the evaporator fan are operated according to the rotation speed of the compressor, and the damper of the air supply duct is operated according to the rotation speed of the refrigerator compartment. temperature and The temperature of the variable temperature space is switched on and off.
The anti-icing control method according to claim 7, further comprising:

When the ambient temperature is greater than or equal to the first temperature threshold and the cooling gear of the variable temperature space is not the preset gear, the compensation heating wire is controlled to work according to the freezing gear and the ambient temperature.
The anti-icing control method according to claim 5, characterized in that:

The first temperature threshold is any value between 9 and 12°C, the second temperature threshold is any value between 6 and 8°C, and the preset temperature is any value between -7°C and 0°C. A value, the humidity threshold is any value between 75% and 85%.
A refrigerator includes a controller, the controller includes a memory and a processor, a control program is stored in the memory, and when executed by the processor, the control program is used to implement anti-fouling according to claim 1 Ice control methods.