CN112595015A

CN112595015A - Refrigerator control method and device, refrigerator, storage medium and processor

Info

Publication number: CN112595015A
Application number: CN202011431574.6A
Authority: CN
Inventors: 卢起彪; 朱文琪; 邓涵; 孟贺; 陆文怡
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-04-02

Abstract

The invention discloses a control method and a control device for a refrigerator, the refrigerator, a storage medium and a processor, wherein the method comprises the following steps: under the condition that the refrigerator operates in a refrigeration mode, determining whether the operation state of the refrigerator reaches a preset defrosting entry condition or not; if the running state of the refrigerator reaches the defrosting entering condition, controlling the refrigerator to enter a preset defrosting mode; and if the running state of the refrigerator does not reach the defrosting entry condition, controlling the refrigerator to continue refrigerating and running, acquiring the compartment temperature of a refrigerating compartment of the refrigerator, and controlling the refrigerating and running process of the refrigerator according to the compartment temperature. According to the scheme, the air door of the air-cooled refrigerator is prevented from freezing, so that the refrigerator compartment can be normally refrigerated, and the refrigeration reliability is improved.

Description

Refrigerator control method and device, refrigerator, storage medium and processor

Technical Field

The invention belongs to the technical field of refrigerators, particularly relates to a control method and device of a refrigerator, a storage medium and a processor, and particularly relates to a control method and device for preventing freezing of a damper of an air-cooled refrigerator, a storage medium and a processor.

Background

In the related scheme, most of the air-cooled refrigerators are single-evaporator refrigeration systems, cold air generated by an evaporator is respectively conveyed to a refrigerating chamber, a temperature-changing chamber and a freezing chamber through a fan and an air outlet duct, then temperature-rising air of the refrigerating chamber, the temperature-changing chamber and the freezing chamber is sucked onto the evaporator through respective air return ducts, and is conveyed to the refrigerating chamber and the freezing chamber again after heat exchange with the evaporator to form a refrigeration cycle. Because the refrigeration demands of the refrigerating chamber, the temperature-changing chamber and the freezing chamber are asynchronous, the single-evaporator refrigeration system needs to control the air volume sent into the refrigerating chamber and the temperature-changing chamber through opening and closing of the air door so as to maintain the temperature required by each chamber. However, the air-cooled refrigerator often has the condition that the air door can not be opened or closed due to icing, so that the refrigerator compartment can not be normally cooled, and the temperature of the compartment is low or high.

The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.

Disclosure of Invention

The invention aims to provide a control method and device of a refrigerator, the refrigerator, a storage medium and a processor, so as to solve the problem that the air door of an air-cooled refrigerator cannot be opened or closed due to freezing, so that the refrigerating reliability of a refrigerator compartment cannot be normally refrigerated, and the refrigerating reliability is improved by preventing the air door of the air-cooled refrigerator from being frozen so that the refrigerator compartment can be normally refrigerated.

The invention provides a control method of a refrigerator, which comprises the following steps: under the condition that the refrigerator operates in a refrigeration mode, determining whether the operation state of the refrigerator reaches a preset defrosting entry condition or not; if the running state of the refrigerator reaches the defrosting entering condition, controlling the refrigerator to enter a preset defrosting mode; and if the running state of the refrigerator does not reach the defrosting entry condition, controlling the refrigerator to continue refrigerating and running, acquiring the compartment temperature of a refrigerating compartment of the refrigerator, and controlling the refrigerating and running process of the refrigerator according to the compartment temperature.

In some embodiments, determining whether the operation state of the refrigerator reaches a preset defrosting entry condition includes at least one of: determining whether the current compressor running time of the refrigerator reaches a set compressor running time, and if the current compressor running time of the refrigerator reaches the set compressor running time, determining that the running state of the refrigerator reaches a preset defrosting entry condition; and determining whether the current refrigerating operation time of the refrigerator reaches a set refrigerating operation time, and if the current refrigerating operation time of the refrigerator reaches the set refrigerating operation time, determining that the operation state of the refrigerator reaches a preset defrosting entry condition.

In some embodiments, controlling the refrigerator to enter a preset defrosting mode includes: the method comprises the steps of controlling a compressor of the refrigerator to stop, controlling an evaporator of the refrigerator to stop refrigerating, controlling an electric heater below the evaporator of the refrigerator to be started, and controlling an air door of the refrigerator to be closed.

In some embodiments, controlling a cooling operation process of the refrigerator according to the compartment temperature includes: if the room temperature is greater than or equal to the sum of a first preset temperature value and a preset temperature difference, controlling an air door of the refrigerator to be in an open state; under the condition that the air door of the refrigerator is in an open state, if a first temperature change value of the compartment temperature is greater than or equal to a first set temperature difference within a first set time, controlling the air door of the refrigerator to be in the open state continuously; if the first temperature change value of the compartment temperature is smaller than the first set temperature difference within the first set time, determining that an air door of the refrigerator freezes, and controlling the refrigerator to enter the defrosting mode; under the condition that the air door of the refrigerator is continuously in an open state, if the temperature of the compartment is less than or equal to the difference between a second set temperature and a preset temperature difference, controlling the air door of the refrigerator to be closed; if the temperature of the compartment is greater than the difference between the second set temperature and the preset temperature difference, controlling the air door of the refrigerator to be in an opening state continuously; under the condition that the air door of the refrigerator is in a closed state, if a second temperature change value of the compartment temperature is greater than or equal to a second set temperature difference within a second set time, controlling the air door of the refrigerator to be in the closed state continuously, and controlling the refrigerator to enter a refrigeration mode after the set defrosting shutdown time so as to control the refrigerator to operate in the refrigeration mode; and if the second temperature change value of the compartment temperature is smaller than the second set temperature difference within the second set time, determining that the air door of the refrigerator is frozen, and controlling the refrigerator to enter the defrosting mode.

In some embodiments, further comprising: under the condition that the refrigerator is controlled to enter a preset defrosting mode when the running state of the refrigerator reaches the defrosting entering condition, and under the condition that the refrigerator is controlled to enter the defrosting mode when an air door of the refrigerator is frozen, under the condition that the refrigerator is controlled to enter the preset defrosting mode, whether the current defrosting state of the refrigerator in the defrosting mode reaches the set defrosting exiting condition or not is determined; if the current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition, controlling the refrigerator to exit the defrosting mode; and if the current defrosting state of the refrigerator in the defrosting mode does not reach the set defrosting exit condition, controlling the refrigerator to be in the defrosting mode continuously.

In some embodiments, determining whether a current defrosting state of the refrigerator in the defrosting mode has reached a set defrosting exit condition includes: determining whether the current defrosting temperature of the refrigerator in the defrosting mode reaches a set defrosting temperature, and if the current defrosting temperature reaches the set defrosting temperature, determining that the current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition; when the running state of the refrigerator reaches the defrosting entering condition, the refrigerator is controlled to enter a preset defrosting mode, and the set defrosting temperature is equal to a third set temperature; and when the air door of the refrigerator is frozen, controlling the refrigerator to enter the defrosting mode, wherein the set defrosting temperature is higher than a third set temperature.

In some embodiments, controlling the refrigerator to exit the defrosting mode includes: controlling an electric heater below an evaporator of the refrigerator to be closed, and controlling an air door of the refrigerator to be opened; if the third change value of the compartment temperature is greater than or equal to the third set temperature difference within the third set time, controlling the refrigerator to enter a refrigeration mode after the set defrosting shutdown time so as to control the refrigerator to operate in the refrigeration mode; wherein the set defrosting off-time in a case where the refrigerator is controlled to enter the defrosting mode when the damper of the refrigerator is frozen is greater than the set defrosting off-time in a case where the refrigerator is controlled to enter a preset defrosting mode when the operation state of the refrigerator reaches the defrosting entry condition; and if the third change value of the compartment temperature is smaller than the third set temperature difference within the third set time, determining that the air door of the refrigerator is frozen, and controlling the refrigerator to enter the defrosting mode.

In some embodiments, further comprising: if the number of times that the refrigerator enters the preset defrosting mode within the fourth set time is larger than or equal to the set number of times, determining that the refrigerator breaks down, and initiating a reminding message that the refrigerator breaks down.

In accordance with the above method, another aspect of the present invention provides a control apparatus for a refrigerator, comprising: a determination unit configured to determine whether an operation state of the refrigerator reaches a preset defrosting entry condition, in a case where the refrigerator is operated in a cooling mode; a control unit configured to control the refrigerator to enter a preset defrosting mode if an operation state of the refrigerator reaches the defrosting entry condition; the control unit is also configured to control the refrigerator to continue refrigerating operation if the operation state of the refrigerator does not reach the defrosting entry condition, acquire the compartment temperature of the refrigerating compartment of the refrigerator, and control the refrigerating operation process of the refrigerator according to the compartment temperature.

In some embodiments, the determining unit determines whether the operation state of the refrigerator reaches a preset defrosting entry condition, including at least one of: determining whether the current compressor running time of the refrigerator reaches a set compressor running time, and if the current compressor running time of the refrigerator reaches the set compressor running time, determining that the running state of the refrigerator reaches a preset defrosting entry condition; and determining whether the current refrigerating operation time of the refrigerator reaches a set refrigerating operation time, and if the current refrigerating operation time of the refrigerator reaches the set refrigerating operation time, determining that the operation state of the refrigerator reaches a preset defrosting entry condition.

In some embodiments, the control unit, controlling the refrigerator to enter a preset defrosting mode, includes: the method comprises the steps of controlling a compressor of the refrigerator to stop, controlling an evaporator of the refrigerator to stop refrigerating, controlling an electric heater below the evaporator of the refrigerator to be started, and controlling an air door of the refrigerator to be closed.

In some embodiments, the control unit, which controls the refrigerating operation process of the refrigerator according to the compartment temperature, includes: if the room temperature is greater than or equal to the sum of a first preset temperature value and a preset temperature difference, controlling an air door of the refrigerator to be in an open state; under the condition that the air door of the refrigerator is in an open state, if a first temperature change value of the compartment temperature is greater than or equal to a first set temperature difference within a first set time, controlling the air door of the refrigerator to be in the open state continuously; if the first temperature change value of the compartment temperature is smaller than the first set temperature difference within the first set time, determining that an air door of the refrigerator freezes, and controlling the refrigerator to enter the defrosting mode; under the condition that the air door of the refrigerator is continuously in an open state, if the temperature of the compartment is less than or equal to the difference between a second set temperature and a preset temperature difference, controlling the air door of the refrigerator to be closed; if the temperature of the compartment is greater than the difference between the second set temperature and the preset temperature difference, controlling the air door of the refrigerator to be in an opening state continuously; under the condition that the air door of the refrigerator is in a closed state, if a second temperature change value of the compartment temperature is greater than or equal to a second set temperature difference within a second set time, controlling the air door of the refrigerator to be in the closed state continuously, and controlling the refrigerator to enter a refrigeration mode after the set defrosting shutdown time so as to control the refrigerator to operate in the refrigeration mode; and if the second temperature change value of the compartment temperature is smaller than the second set temperature difference within the second set time, determining that the air door of the refrigerator is frozen, and controlling the refrigerator to enter the defrosting mode.

In some embodiments, further comprising: the determining unit is further configured to determine whether a current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition if the current defrosting state of the refrigerator in the defrosting mode reaches the set defrosting exit condition, in a case where the refrigerator is controlled to enter a preset defrosting mode when the operating state of the refrigerator reaches the defrosting entry condition, and in a case where the refrigerator is controlled to enter the defrosting mode when a damper of the refrigerator is frozen; the control unit is further configured to control the refrigerator to exit the defrosting mode if the current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition; the control unit is further configured to control the refrigerator to be continuously in the defrosting mode if the current defrosting state of the refrigerator in the defrosting mode does not reach a set defrosting exit condition.

In some embodiments, the determining unit, in a case where the refrigerator is controlled to enter the defrosting mode when the damper of the refrigerator is frozen, determines whether a current defrosting state of the refrigerator in the defrosting mode has reached a set defrosting exit condition, including: determining whether the current defrosting temperature of the refrigerator in the defrosting mode reaches a set defrosting temperature, and if the current defrosting temperature reaches the set defrosting temperature, determining that the current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition; when the running state of the refrigerator reaches the defrosting entering condition, the refrigerator is controlled to enter a preset defrosting mode, and the set defrosting temperature is equal to a third set temperature; and when the air door of the refrigerator is frozen, controlling the refrigerator to enter the defrosting mode, wherein the set defrosting temperature is higher than a third set temperature.

In some embodiments, the control unit, controlling the refrigerator to exit the defrosting mode, includes: controlling an electric heater below an evaporator of the refrigerator to be closed, and controlling an air door of the refrigerator to be opened; if the third change value of the compartment temperature is greater than or equal to the third set temperature difference within the third set time, controlling the refrigerator to enter a refrigeration mode after the set defrosting shutdown time so as to control the refrigerator to operate in the refrigeration mode; wherein the set defrosting off-time in a case where the refrigerator is controlled to enter the defrosting mode when the damper of the refrigerator is frozen is greater than the set defrosting off-time in a case where the refrigerator is controlled to enter a preset defrosting mode when the operation state of the refrigerator reaches the defrosting entry condition; and if the third change value of the compartment temperature is smaller than the third set temperature difference within the third set time, determining that the air door of the refrigerator is frozen, and controlling the refrigerator to enter the defrosting mode.

In some embodiments, further comprising: the control unit is further configured to determine that the refrigerator has a fault if the number of times that the refrigerator enters a preset defrosting mode within a fourth set time is greater than or equal to a set number of times, and initiate a warning message that the refrigerator has a fault.

In accordance with the above apparatus, another aspect of the present invention provides a refrigerator, comprising: the control device of the refrigerator is described above.

In accordance with the above method, a further aspect of the present invention provides a storage medium, which includes a stored program, wherein when the program runs, an apparatus in which the storage medium is located is controlled to execute the above control method of the refrigerator.

In accordance with the above method, a further aspect of the present invention provides a processor for executing a program, wherein the program executes the above control method of the refrigerator.

Therefore, according to the scheme of the invention, the temperature change of the compartment is detected, and the corresponding control logic is changed according to the temperature change condition of the compartment, so that the refrigeration and defrosting modes are controlled to pre-cool and quickly defrost the ice of the air door, and the compartment temperature is prevented from being higher or lower, so that the air door of the air-cooled refrigerator is prevented from being frozen, the compartment of the refrigerator can be normally refrigerated, and the refrigeration reliability is improved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

Fig. 1 is a schematic flowchart of a control method of a refrigerator according to an embodiment of the present invention;

fig. 2 is a schematic flow chart illustrating an embodiment of a process of controlling a cooling operation of the refrigerator according to the compartment temperature in the method of the present invention;

FIG. 3 is a schematic flow chart illustrating an embodiment of exiting the defrost mode in the method of the present invention;

FIG. 4 is a schematic flow chart illustrating an embodiment of controlling the refrigerator to exit the defrosting mode according to the method of the present invention;

FIG. 5 is a schematic structural diagram of a control device of a refrigerator according to an embodiment of the present invention;

FIG. 6 is a schematic flow chart diagram of one embodiment of the operation control logic for the refrigerator;

fig. 7 is a flowchart illustrating an embodiment of a control logic when an unrecoverable failure occurs in a refrigerator.

The reference numbers in the embodiments of the present invention are as follows, in combination with the accompanying drawings:

102-a determination unit; 104-control unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

According to an embodiment of the present invention, a method for controlling a refrigerator is provided, as shown in fig. 1, which is a schematic flow chart of an embodiment of the method of the present invention. The control method of the refrigerator may include: step S110 to step S130.

In step S110, in a case where the refrigerator is operated in a cooling mode, that is, during a cooling operation of the refrigerator in the cooling mode, it is determined whether an operation state of the refrigerator reaches a preset defrosting entry condition. That is, during a normal cooling operation of the refrigerator, whether the refrigerator reaches a defrosting entry condition is monitored in real time.

In some embodiments, the determining of whether the operation state of the refrigerator reaches the preset defrosting entry condition in step S110 includes at least one of the following, namely, includes at least one defrosting entry determining process:

the first defrosting entry determining process: and determining whether the current compressor running time of the refrigerator reaches a set compressor running time, and if the current compressor running time of the refrigerator reaches the set compressor running time, determining that the running state of the refrigerator reaches a preset defrosting entry condition.

The second defrosting entering determining process comprises the following steps: and determining whether the current refrigerating operation time of the refrigerator reaches a set refrigerating operation time, and if the current refrigerating operation time of the refrigerator reaches the set refrigerating operation time, determining that the operation state of the refrigerator reaches a preset defrosting entry condition.

In step S120, if the operation state of the refrigerator reaches the defrosting entry condition, the refrigerator is controlled to enter a preset defrosting mode to defrost the air door of the refrigerator, so as to reduce or even eliminate the amount of frost on the air door of the refrigerator.

In some embodiments, the controlling the refrigerator to enter the preset defrosting mode in step S120 includes: the method comprises the steps of controlling a compressor of the refrigerator to stop, controlling an evaporator of the refrigerator to stop refrigerating, controlling an electric heater below the evaporator of the refrigerator to be started, and controlling an air door of the refrigerator to be closed.

Specifically, the defrosting of the air door is performed by an electric heater which is generally arranged below an evaporator of the refrigerator, but the defrosting is completed under different conditions; in the general defrosting process, defrosting is completed and the electric heater is stopped under the condition that the defrosting temperature sensor reaches the third set temperature T3. In the scheme of the invention, the defrosting of the air door can be carried out by the electric heater below the evaporator (the temperature of the defrosting sensor reaches the fourth set temperature T4, the heat firstly passes through the evaporator and then reaches the air door, so that the fourth set temperature T4 is more than the third set temperature T3, the shutdown time after defrosting can be prolonged, and the defrosting can be carried out by the waste heat diffusion of the electric heater.

Specifically, during normal refrigeration running of the refrigerator, when the refrigerator is judged to reach a defrosting condition, the refrigerator enters a defrosting mode, the compressor is stopped at the moment, the evaporator does not refrigerate any more, the electric heater is opened, the air door is closed, and the situation that the temperature of the compartment rises as hot air generated by electric heating enters the compartment is avoided.

In step S130, if the operation state of the refrigerator does not reach the defrosting entry condition, controlling the refrigerator to continue cooling operation, obtaining a compartment temperature of a refrigerating compartment of the refrigerator, and controlling a cooling operation process of the refrigerator according to the compartment temperature.

Therefore, whether the refrigerator enters a defrosting mode or not is determined during the refrigerating operation of the refrigerator, after the refrigerator enters an air door defrosting program, the air door is frosted and iced cleanly, the situation that cold energy cannot enter a compartment (namely, the air door is closed and the ice cannot be opened) or the cold energy constantly enters the compartment (namely, the air door is opened and the ice cannot be closed) during refrigerating due to the fact that the air door cannot be frosted and iced cleanly when the air door is frosted and iced too much leads to common defrosting is avoided, and the temperature of the compartment is prevented from being too high or too low.

In some embodiments, in combination with the schematic flowchart of an example of controlling the cooling operation process of the refrigerator according to the compartment temperature in the method of the present invention shown in fig. 2, a specific process of controlling the cooling operation process of the refrigerator according to the compartment temperature in step S130 is further described, which includes: step S210 to step S240.

And step S210, if the room temperature is greater than or equal to the sum of a first preset temperature value and a preset temperature difference, controlling an air door of the refrigerator to be in an open state so as to control the refrigerator to continue refrigerating operation.

Specifically, during the normal refrigeration operation of the refrigerator, if the defrosting entering condition is not met, the refrigerator continues to refrigerate, and if the room temperature sensor senses that the room temperature of the refrigerating chamber is larger than or equal to a first preset temperature value T₁And + presetting a temperature difference delta T, which indicates that the time chamber has a refrigeration requirement, executing a throttle opening program.

Step S220, under the condition that the air door of the refrigerator is in an open state, if the first temperature change value of the compartment temperature is greater than or equal to a first set temperature difference within a first set time, controlling the air door of the refrigerator to be in the open state continuously; and if the first temperature change value of the compartment temperature is smaller than the first set temperature difference within the first set time, determining that the air door of the refrigerator is iced, and controlling the refrigerator to enter the defrosting mode.

Specifically, after the air door is opened, if the air door is opened within the first set time t₁The temperature change value of the inner monitoring compartment is larger than or equal to a first set temperature difference delta T₁And if so, indicating that the air door can be normally opened, and keeping the air door to be opened continuously at the moment so as to ensure the cold energy transmission of the compartment.

Step S230, under the condition that the damper of the refrigerator is continuously in the open state, if the compartment temperature is less than or equal to the difference between the second set temperature and the preset temperature difference, controlling the damper of the refrigerator to be closed, even if the damper of the refrigerator is in the closed state; and if the temperature of the compartment is greater than the difference between the second set temperature and the preset temperature difference, controlling the air door of the refrigerator to be continuously in an open state.

Specifically, when the sensor senses that the compartment temperature is less than or equal to a second set temperature T under the condition that the air door is kept open to ensure the compartment cold quantity transmission₂A predetermined temperature difference Δ T, which indicates that the cooling capacity of the chamber is sufficient,there is temporarily no refrigeration demand, at which point a damper closing routine is executed.

Step S240, under the condition that the air door of the refrigerator is in a closed state, if a second temperature change value of the compartment temperature is greater than or equal to a second set temperature difference within a second set time, controlling the air door of the refrigerator to be in the closed state continuously, and controlling the refrigerator to enter a refrigeration mode after the set defrosting shutdown time so as to control the refrigerator to operate in the refrigeration mode; and if the second temperature change value of the compartment temperature is smaller than the second set temperature difference within the second set time, determining that the air door of the refrigerator is frozen, and controlling the refrigerator to enter the defrosting mode.

Specifically, after the throttle closing program is executed, i.e. after the throttle is closed, if the time is at the second set time t₂The temperature change value of the inner monitoring compartment is more than or equal to a second set temperature difference delta T₂If yes, the air door can be normally closed, and at the moment, the air door is continuously closed and whether the refrigerator reaches the defrosting condition is judged again.

Therefore, under the condition that the refrigerator does not enter the defrosting mode, after the controller sends out an instruction of opening or closing the door of the refrigerator, the temperature change of the refrigerator is continuously detected through the temperature sensor of the refrigerator, corresponding control logic is executed according to the temperature change of the refrigerator, precooling and rapid ice removal are carried out through the refrigeration control and defrosting modes, the temperature of the refrigerator is prevented from being higher or lower, rapid ice removal can be carried out after the door is frozen, and the problem that the temperature of the refrigerator is too high or too low is prevented.

In some embodiments, further comprising: the process of exiting the defrosting mode specifically comprises the following steps:

the following further describes a specific process of exiting the defrosting mode with reference to a schematic flow chart of an embodiment of exiting the defrosting mode in the method of the present invention shown in fig. 3, including: step S310 to step S330.

Step S310, under the condition that the refrigerator is controlled to enter a preset defrosting mode when the running state of the refrigerator reaches the defrosting entering condition, and under the condition that the refrigerator is controlled to enter the defrosting mode when an air door of the refrigerator is frozen, under the condition that the refrigerator is controlled to enter the preset defrosting mode, whether the current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exiting condition or not is determined.

In some embodiments, the determining whether the current defrosting state of the refrigerator in the defrosting mode reaches the set defrosting exit condition in the step S310, in case that the refrigerator is controlled to enter the preset defrosting mode when the operation state of the refrigerator reaches the defrosting entry condition and in case that the refrigerator is controlled to enter the defrosting mode when the damper of the refrigerator is frozen, may include:

the first defrosting exit determination process: determining whether the current defrosting temperature of the refrigerator in the defrosting mode reaches a set defrosting temperature, and if the current defrosting temperature reaches the set defrosting temperature, determining that the current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition. When the running state of the refrigerator reaches the defrosting entering condition, the refrigerator is controlled to enter a preset defrosting mode, and the set defrosting temperature is equal to a third set temperature; and when the air door of the refrigerator is frozen, controlling the refrigerator to enter the defrosting mode, wherein the set defrosting temperature is higher than a third set temperature.

Of course, in the step S310, in the case that the refrigerator is controlled to enter the defrosting mode when the damper of the refrigerator is frozen, determining whether the current defrosting state of the refrigerator in the defrosting mode reaches the set defrosting exit condition may include:

the second defrosting exit determination process: determining whether the current defrosting time of the refrigerator in the defrosting mode reaches a set defrosting time, and if the current defrosting time reaches the set defrosting time, determining that the current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition.

Step S320, if the current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition, controlling the refrigerator to exit the defrosting mode.

In some embodiments, a specific process of controlling the refrigerator to exit the defrosting mode in step S320 is further described with reference to a flowchart of an example of controlling the refrigerator to exit the defrosting mode in the method of the present invention shown in fig. 4, where the specific process includes: step S410 to step S430.

And step S410, controlling an electric heater below an evaporator of the refrigerator to be closed, and controlling a damper of the refrigerator to be opened.

Step S420, under the condition that an electric heater below an evaporator of the refrigerator is closed and a damper of the refrigerator is opened, if a third change value of the compartment temperature is greater than or equal to a third set temperature difference within a third set time, controlling the refrigerator to enter a refrigeration mode after the set defrosting shutdown time so as to control the refrigerator to operate in the refrigeration mode; wherein the set defrosting shutdown time is longer than the set defrosting shutdown time when the refrigerator is controlled to enter a preset defrosting mode when the operation state of the refrigerator reaches the defrosting entry condition.

And step S430, under the condition that the electric heater below the evaporator of the refrigerator is closed and the air door of the refrigerator is opened, if the third change value of the compartment temperature is less than the third set temperature difference within the third set time, determining that the air door of the refrigerator is frozen, and controlling the refrigerator to enter the defrosting mode.

Specifically, if the defrosting exit condition is met, the refrigerator exits the defrosting mode, the electric heater is turned off, the air door opening program is executed, the refrigerator is just in a defrosting completion state at the moment, hot air enters the compartment through the air door, and if the defrosting exit condition is met within a third set time t₃The temperature change value of the inner monitoring compartment is more than or equal to a third set temperature difference delta T₃If the refrigerator is in the normal defrosting mode, the refrigerator enters the refrigerating mode again after the refrigerator is in the normal defrosting shutdown time.

Wherein the original frost exit temperature is a third set temperature T₃Then change toChanging the frost exit temperature to a fourth set temperature T₄(fourth set temperature T)₄Third set temperature T₃) Therefore, the defrosting time is prolonged to freeze and clean the air door. When the defrosting exit condition is judged to be reached (the temperature of the defrosting temperature sensor reaches the fourth set temperature T)₄) Re-executing the air door opening program and judging again at the third set time t₃Whether the temperature change value of the inner room is more than or equal to the third set temperature difference delta T₃And if the condition is met, the air door does not have residual ice and can be normally opened, and the refrigerator enters a refrigeration mode again after normal defrosting shutdown time (water dropping time) to perform the next refrigeration-defrosting cycle.

Of course, the defrosting procedure of the air door can be changed, namely the stopping time (generally called dripping time) after defrosting is prolonged without increasing the exit temperature of the defrosting temperature sensor, and the air door is iced and cleaned by using the residual heat after defrosting. Therefore, the downtime after defrosting is prolonged, and the electric heater is started to generate heat to defrost when defrosting; when the machine is shut down after defrosting, the electric heater is closed, the heat is not completely utilized, and at the moment, the waste heat is utilized to defrost the air door, so that the frost or ice is completely removed.

Step S330, if the current defrosting state of the refrigerator in the defrosting mode does not reach a set defrosting exit condition, controlling the refrigerator to continue to be in the defrosting mode.

In some embodiments, further comprising: the fault detection process specifically includes: if the number of times that the refrigerator enters the preset defrosting mode within the fourth set time is larger than or equal to the set number of times, determining that the refrigerator breaks down, and initiating a reminding message that the refrigerator breaks down.

Specifically, when the number of times of executing the air door defrosting program in the fourth set time t4 is more than or equal to 3 times, the refrigerator is judged to have an unrecoverable fault, and at the moment, the refrigerator is notified to a user in various forms such as sound, light, a mobile phone client and the like, and is in a fault state and needs to be maintained; otherwise, the refrigerator continues to perform the refrigerator operation control program.

Through a large number of tests, the technical scheme of the embodiment is adopted, and corresponding control logics are changed according to the temperature change of the compartment and the condition of the temperature change of the compartment, so that the refrigeration and defrosting modes are controlled to pre-cool and quickly melt ice of the air door, the temperature of the compartment is prevented from being higher or lower, and the air door of the air-cooled refrigerator is prevented from freezing, so that the compartment of the refrigerator can be normally refrigerated, and the refrigeration reliability is improved.

According to an embodiment of the present invention, there is also provided a control apparatus of a refrigerator corresponding to the control method of the refrigerator. Referring to fig. 5, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The control apparatus of the refrigerator may include: a determination unit 102 and a control unit 104.

The determining unit 102 is configured to determine whether an operation state of the refrigerator reaches a preset defrosting entry condition when the refrigerator is operated in a cooling mode, that is, during a cooling operation of the refrigerator in the cooling mode. That is, during a normal cooling operation of the refrigerator, whether the refrigerator reaches a defrosting entry condition is monitored in real time. The specific function and processing of the determination unit 102 are referred to in step S110.

In some embodiments, the determining unit 102, determining whether the operation state of the refrigerator reaches a preset defrosting entry condition, may include:

the first defrosting entry determining process: the determining unit 102 is specifically configured to determine whether the current compressor operation time of the refrigerator reaches a set compressor operation time, and if the current compressor operation time of the refrigerator reaches the set compressor operation time, determine that the operation state of the refrigerator has reached a preset defrosting entry condition.

Of course, the determining unit 102, determining whether the operation state of the refrigerator reaches the preset defrosting entry condition, may also include:

the second defrosting entering determining process comprises the following steps: the determining unit 102 is specifically configured to determine whether the current cooling operation time of the refrigerator reaches a set cooling operation time, and if the current cooling operation time of the refrigerator reaches the set cooling operation time, determine that the operation state of the refrigerator has reached a preset defrosting entry condition.

The control unit 104 is configured to control the refrigerator to enter a preset defrosting mode if the operation state of the refrigerator reaches the defrosting entry condition, so as to defrost the air door of the refrigerator, and reduce or even eliminate the frosting amount of the air door of the refrigerator. The specific function and processing of the control unit 104 are referred to in step S120.

In some embodiments, the control unit 104, controlling the refrigerator to enter a preset defrosting mode, includes: the control unit 104 is further specifically configured to control a compressor of the refrigerator to stop, control an evaporator of the refrigerator to stop cooling, control an electric heater below the evaporator of the refrigerator to open, and control a damper of the refrigerator to close.

The control unit 104 is further configured to control the refrigerator to continue cooling operation, obtain a compartment temperature of a refrigerating compartment of the refrigerator, and control a cooling operation process of the refrigerator according to the compartment temperature if the operation state of the refrigerator does not reach the defrosting entry condition. The specific function and processing of the control unit 104 are also referred to in step S130.

In some embodiments, the control unit 104, controlling the refrigerating operation process of the refrigerator according to the compartment temperature, includes:

the control unit 104 is specifically configured to control the damper of the refrigerator to be in an open state if the compartment temperature is greater than or equal to a sum of a first preset temperature value and a preset temperature difference, so as to control the refrigerator to continue cooling operation. The specific functions and processes of the control unit 104 are also referred to in step S210.

The control unit 104 is specifically configured to, when the damper of the refrigerator is in the open state, control the damper of the refrigerator to continue to be in the open state if a first temperature change value of the compartment temperature is greater than or equal to a first set temperature difference within a first set time; and if the first temperature change value of the compartment temperature is smaller than the first set temperature difference within the first set time, determining that the air door of the refrigerator is iced, and controlling the refrigerator to enter the defrosting mode. The specific functions and processes of the control unit 104 are also referred to in step S220.

The control unit 104 is specifically further configured to, in a case where the damper of the refrigerator is continuously in the open state, control the damper of the refrigerator to be closed if the compartment temperature is less than or equal to a difference between a second set temperature and a preset temperature difference, even if the damper of the refrigerator is in the closed state; and if the temperature of the compartment is greater than the difference between the second set temperature and the preset temperature difference, controlling the air door of the refrigerator to be continuously in an open state. The specific function and processing of the control unit 104 are also referred to in step S230.

Specifically, the damper is kept open to ensureUnder the condition of conveying the cold energy of the compartment, when the sensor senses that the temperature of the compartment is less than or equal to a second set temperature T₂A preset temperature difference Δ T, indicating that the compartment has sufficient cooling capacity, and that there is temporarily no cooling demand, and that the damper closing procedure is performed.

The control unit 104 is specifically configured to, when the damper of the refrigerator is in a closed state, if a second temperature change value of the compartment temperature is greater than or equal to a second set temperature difference within a second set time, control the damper of the refrigerator to continue to be in the closed state, and after a set defrosting shutdown time, control the refrigerator to enter a cooling mode to control the refrigerator to operate in the cooling mode; and if the second temperature change value of the compartment temperature is smaller than the second set temperature difference within the second set time, determining that the air door of the refrigerator is frozen, and controlling the refrigerator to enter the defrosting mode. The specific function and processing of the control unit 104 are also referred to in step S240.

the determining unit 102 is further configured to determine whether a current defrosting state of the refrigerator in the defrosting mode has reached a set defrosting exit condition if the current defrosting state of the refrigerator in the defrosting mode has reached the set defrosting exit condition, in a case where the refrigerator is controlled to enter a preset defrosting mode when the operating state of the refrigerator reaches the defrosting entry condition, and in a case where the refrigerator is controlled to enter the defrosting mode when a damper of the refrigerator is frozen. The specific function and processing of the determination unit 102 are also referred to in step S310.

In some embodiments, the determining unit 102, in a case where the refrigerator is controlled to enter a preset defrosting mode when the operation state of the refrigerator reaches the defrosting entry condition, and in a case where the refrigerator is controlled to enter the defrosting mode when a damper of the refrigerator is frozen, determining whether a current defrosting state of the refrigerator in the defrosting mode has reached a set defrosting exit condition may include:

the first defrosting exit determination process: the determining unit 102 is further specifically configured to determine whether a current defrosting temperature of the refrigerator in the defrosting mode reaches a set defrosting temperature, and if the current defrosting temperature reaches the set defrosting temperature, determine that a current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition. When the running state of the refrigerator reaches the defrosting entering condition, the refrigerator is controlled to enter a preset defrosting mode, and the set defrosting temperature is equal to a third set temperature; and when the air door of the refrigerator is frozen, controlling the refrigerator to enter the defrosting mode, wherein the set defrosting temperature is higher than a third set temperature.

Of course, the determining unit 102, in a case that the refrigerator is controlled to enter a preset defrosting mode when the operation state of the refrigerator reaches the defrosting entry condition, and in a case that the refrigerator is controlled to enter the defrosting mode when the damper of the refrigerator is frozen, may determine whether the current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition, and may further include:

the second defrosting exit determination process: the determining unit 102 is further specifically configured to determine whether a current defrosting time of the refrigerator in the defrosting mode reaches a set defrosting time, and if the current defrosting time reaches the set defrosting time, determine that a current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition.

The control unit 104 is further configured to control the refrigerator to exit the defrosting mode if a current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition. The specific functions and processes of the control unit 104 are also referred to in step S320.

In some embodiments, the controlling unit 104, controlling the refrigerator to exit the defrosting mode, includes:

the control unit 104 is specifically configured to control the electric heater below the evaporator of the refrigerator to be turned off, and control the damper of the refrigerator to be opened. The specific functions and processes of the control unit 104 are also referred to in step S410.

The control unit 104 is specifically further configured to, when the electric heater below the evaporator of the refrigerator is turned off and the damper of the refrigerator is opened, if a third variation value of the compartment temperature is greater than or equal to a third set temperature difference within a third set time, after a set defrosting shutdown time, control the refrigerator to enter a cooling mode to control the refrigerator to operate in the cooling mode; wherein the set defrosting shutdown time is longer than the set defrosting shutdown time when the refrigerator is controlled to enter a preset defrosting mode when the operation state of the refrigerator reaches the defrosting entry condition. The specific function and processing of the control unit 104 are also referred to in step S420.

The control unit 104 is specifically further configured to determine that the damper of the refrigerator freezes and control the refrigerator to enter the defrosting mode if a third variation value of the compartment temperature is smaller than a third set temperature difference within a third set time when the electric heater below the evaporator of the refrigerator is turned off and the damper of the refrigerator is turned on. The specific functions and processes of the control unit 104 are also referred to in step S430.

Wherein the original frost exit temperature is a third set temperature T₃Changing the defrosting exit temperature to a fourth set temperature T₄(fourth set temperature T)₄Third set temperature T₃) Therefore, the defrosting time is prolonged to freeze and clean the air door. When the defrosting exit condition is judged to be reached (the temperature of the defrosting temperature sensor reaches the fourth set temperature T)₄) Re-executing the air door opening program and judging again at the third set time t₃Whether the temperature change value of the inner room is more than or equal to the third set temperature difference delta T₃And if the condition is met, the air door does not have residual ice and can be normally opened, and the refrigerator enters a refrigeration mode again after normal defrosting shutdown time (water dropping time) to perform the next refrigeration-defrosting cycle.

The control unit 104 is further configured to control the refrigerator to continue to be in the defrosting mode if the current defrosting state of the refrigerator in the defrosting mode does not reach a set defrosting exit condition. The specific functions and processes of the control unit 104 are also referred to in step S330.

In some embodiments, further comprising: the fault detection process specifically includes: the control unit 104 is further configured to determine that the refrigerator has a fault if the number of times that the refrigerator enters the preset defrosting mode within the fourth set time is greater than or equal to a set number of times, and initiate a warning message that the refrigerator has a fault.

Since the processes and functions implemented by the apparatus of this embodiment substantially correspond to the embodiments, principles and examples of the method shown in fig. 1 to 4, the description of this embodiment is not detailed, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.

Through a large number of tests, the technical scheme of the invention is adopted, by detecting the temperature change of the compartment and changing the corresponding control logic according to the temperature change condition of the compartment, the refrigeration and defrosting modes are controlled to pre-cool and quickly melt ice of the air door, the temperature of the compartment is prevented from being higher or lower, the existing detection resources of the refrigerator are fully utilized, the air door can be economically judged to be incapable of being opened or closed due to icing, the problem that the air door can not be opened or closed due to icing can be solved, and the refrigeration reliability is improved.

According to an embodiment of the invention, a refrigerator corresponding to the control device of the refrigerator is also provided. The refrigerator may include: the control device of the refrigerator is described above.

Some schemes, when opening through the air door request, to the air door in the change of certain time internal motor current judge the air-out door can normally open, and then can learn whether the air door has frozen, from this can be pertinence carry out constantly heating all around to the air door fan door until the air door can open. The refrigerator solves the partial damper icing problem, but also has some problems, such as: the current detection module and the damper heater module are added, so that the design and the production are complex, and the cost is increased more; the air door heater is limited by the size of the structure, the power is low, the ice can be dissolved in a long time, the temperature rise of the compartment is high, and the fresh-keeping effect of the refrigerator is poor; the air door is also frozen in an open state, which does not solve the problem, and can cause the compartment temperature to be lower and freeze food materials; when the air door has the fault that the air door cannot be opened under the non-icing condition, the air door can be judged to be frozen by mistake, the electric heating is not stopped, the temperature of the compartment rises, and the refrigerator loses the fresh-keeping effect.

In some other schemes, the refrigerating air door is opened after a first preset time by detecting that the defrosting state is that the refrigerator exits the defrosting period, and the frost formed around the air door is melted by using the heat generated by the refrigerator in the defrosting period. The refrigerator solves the partial damper icing problem, but also has some problems, such as: when the icing frost amount of the air door is large and the frosting amount of the evaporator is small, the electric heating working time is short, the defrosting heat is small, the frost of the air door cannot be completely melted, and the air door cannot be opened; the problem that the temperature of the refrigerator room is higher or lower in a long time due to the fact that the air door is not opened or closed due to the fact that frost is formed on the air door in a refrigeration cycle cannot be solved; the refrigerator has no air door fault alarm function, and a user cannot easily find the abnormality of the refrigerator.

In some embodiments, the scheme of the invention provides a control method for preventing freezing of a damper of an air-cooled refrigerator, which makes full use of the existing detection resources of the refrigerator, economically judges that the damper cannot be opened or closed due to freezing, can solve the problem that the damper cannot be opened or closed due to freezing, and is good in economy.

Specifically, according to the scheme of the invention, no device or module is required to be added, and only by changing the control logic, after the air door defrosting program is started, the air door is frosted and iced completely, so that the situation that the air door cannot be defrosted completely when common defrosting is caused by frosting and icing too much, and the cold energy cannot enter the compartment during refrigeration (namely, the air door cannot be frozen to be opened when being closed) or the cold energy continuously enters the compartment (namely, the air door cannot be frozen to be closed when being opened) is avoided, and the compartment is prevented from being too high or too low in temperature. On the premise of not increasing the cost, only the control logic is changed, the problem of defrosting of the air door is solved, and the cost is high.

According to the scheme of the invention, the refrigeration and defrosting modes are controlled to pre-cool and quickly melt ice of the air door, so that the compartment temperature is prevented from being higher or lower, the problem that the air door can be quickly melted after being frozen and the compartment temperature is prevented from being too high or too low can be solved.

According to the scheme of the invention, the air door can be judged to have an unrecoverable fault, and the user is informed to report the repair, so that the refrigerator is prevented from working with diseases for a long time; the problem that a user cannot easily find the abnormity of the refrigerator when the air door has an unrecoverable fault can be solved.

In some embodiments, according to an aspect of the present invention, a method for controlling freezing prevention of a damper of an air-cooled refrigerator is provided, in which after a controller issues an instruction to open or close the damper, a compartment temperature sensor continuously detects a temperature change of a compartment, and corresponding control logic is executed according to the temperature change of the compartment.

Optionally, after defrosting is finished, executing an air door opening instruction, judging that the air door is frozen if the temperature of the compartment does not change obviously within a certain time, and executing an air door defrosting program.

Optionally, in the refrigeration cycle, when the opening instruction of the air door is executed, the temperature of the compartment does not change obviously within a certain time or becomes high, the icing of the air door is judged, and the defrosting program of the air door is executed.

Optionally, in the refrigeration cycle, when the damper closing instruction is executed, the compartment temperature does not change obviously within a certain time or becomes low, the damper is judged to be frozen, and a damper defrosting program is executed.

Optionally, the air door icing condition continuously occurs for multiple times in a short time, the air door is judged to have an unrecoverable fault, and the refrigerator is notified to a user in various forms such as sound, light and a mobile phone client, so that the refrigerator is prevented from working with diseases for a long time.

The following is a combination of the examples shown in fig. 6 and 7 and presets the temperature value T₁、T₂、ΔT₁、ΔT₂、ΔT₃Time value t₁、t₂、t₃、t₄A preset temperature difference Δ T is set, and a specific implementation process of the scheme of the present invention is exemplarily described.

Fig. 6 is a flowchart illustrating an embodiment of an operation control logic of a refrigerator. As shown in fig. 6, the implementation process of the operation control logic of the refrigerator includes:

step 1, monitoring whether the refrigerator meets defrosting entry conditions in real time during normal refrigerating operation of the refrigerator, and executing step 2 if yes; if not, go to step 3. Whether real-time supervision refrigerator reaches the defrosting and gets into the condition includes: and judging whether the running time of the compressor reaches the set compressor running time or not, or judging whether the refrigerating running time of the refrigerator reaches the set running time or not.

And 2, during the normal refrigerating operation of the refrigerator, if the refrigerator reaches a defrosting entering condition, the refrigerator enters a defrosting mode, the compressor stops, the evaporator does not refrigerate any more, the air door is closed, and hot air generated by defrosting is prevented from entering the compartment.

Step 3, during the normal refrigeration operation of the refrigerator, if the defrosting entering condition is not met, the refrigerator continues to refrigerate, and if the room temperature sensor senses that the room temperature of the refrigerating chamber is larger than or equal to a first preset temperature value T₁And if the preset temperature difference delta T indicates that the time chamber has a refrigeration requirement, executing an air door opening program and executing the step 4.

Step 4, after the air door is opened, if the air door is in the first set time t₁The temperature change value of the inner monitoring compartment is larger than or equal to a first set temperature difference delta T₁If so, the air door can be normally opened, and the air door is kept opened at the moment to ensure the cold quantity transmission of the compartment, and the step 5 is executed.

Step 5, when the sensor senses that the temperature of the compartment is less than or equal to a second set temperature T₂A preset temperature difference Δ T, indicating that the compartment has sufficient cooling capacity, and there is no refrigeration demand for a while, at which point the damper closing procedure is executed, step 6 is executed.

Step 6, after the air door is closed, if the air door is in the second set time t₂The temperature change value of the inner monitoring compartment is more than or equal to a second set temperature difference delta T₂If yes, the air door can be normally closed, at this time, the air door is continuously closed, whether the refrigerator reaches a defrosting condition is judged again, and step 7 is executed.

And 7, when the refrigerator is judged to reach the defrosting condition, the refrigerator enters a defrosting mode, and the refrigerator is pressed at the momentThe compressor is stopped, the evaporator is not refrigerated any more, the electric heater is opened, and the air door is closed, so that the condition that the temperature of the compartment is increased due to the fact that hot air generated by electric heating enters the compartment is avoided. Continuously judging whether the refrigerator reaches a defrosting exit condition, and if not, continuously defrosting; if the defrosting exit condition is met, the refrigerator exits the defrosting mode, the electric heater is closed, the air door opening program is executed, the refrigerator is just in a defrosting completion state at the moment, hot air enters the compartment through the air door, and if the defrosting exit condition is met, the hot air enters the compartment through the air door₃The temperature change value of the inner monitoring compartment is more than or equal to a third set temperature difference delta T₃If the refrigerator is in the normal defrosting mode, the refrigerator enters the refrigerating mode again after the refrigerator is in the normal defrosting shutdown time.

For example: generally, a temperature sensor is arranged on an evaporator pipeline in the refrigerator, a set temperature value is obtained, and when the temperature detected by the sensor is higher than or equal to the set temperature value, the controller controls the electric heater to be turned off, so that defrosting is stopped.

Specifically, if any one of the following 3 conditions is satisfied, and it is determined that the damper is frozen at this time, the refrigerator immediately performs a damper defrosting process: and the exit temperature of the defrosting temperature sensor is increased.

Specifically, the defrosting of the damper is performed, namely, the defrosting mode is entered. But the conditions for defrosting exit are changed; the heat of the electric heater firstly defrosts the evaporator and then reaches the air door, so that the exit temperature of the defrosting temperature sensor is increased, the defrosting time can be prolonged, the opening time of the electric heater is prolonged, more heat is guaranteed to reach the air door, and the air door is frozen to defrost.

The defrosting exit temperature is increased, namely the set temperature of the defrosting temperature sensor is changed and set higher, so that the running time of the electric heater is longer; the extension of the time after the defrosting exit means that the post-defrosting downtime (drip time) is extended. After defrosting of the refrigerator is finished, the refrigerator is usually stopped for a period of time to drip water, defrosting water on the evaporator is dripped, and defrosting is continuously performed by using waste heat of the electric heater; the dripping time of the section is prolonged, so that the full utilization of the waste heat is ensured, and the icing at the air door is improved.

For example: the original frost exit temperature is the third set temperature T₃Changing the defrosting exit temperature to a fourth set temperature T₄(fourth set temperature T)₄Third set temperature T₃) Therefore, the defrosting time is prolonged to freeze and clean the air door. When the defrosting exit condition is judged to be reached (the temperature of the defrosting temperature sensor reaches the fourth set temperature T)₄) Re-executing the air door opening program and judging again at the third set time t₃Whether the temperature change value of the inner room is more than or equal to the third set temperature difference delta T₃And if the condition is met, the air door does not have residual ice and can be normally opened, and the refrigerator enters a refrigeration mode again after normal defrosting shutdown time (water dropping time) to perform the next refrigeration-defrosting cycle.

The first condition is that there is no significant drop in compartment temperature or rise in temperature after the damper opening sequence is executed during the refrigeration cycle.

Second condition, no significant increase or decrease in compartment temperature after the damper closing sequence is performed during the refrigeration cycle.

And under the third condition, after the defrosting is finished, the electric heater is closed, and after the air door opening program is executed, the temperature of the compartment is not obviously changed.

Particularly, as shown in fig. 7, when the number of times that the refrigerator executes the air door defrosting program within the fourth set time t4 is greater than or equal to 3 times, it is determined that the refrigerator has an unrecoverable fault, and at this time, the user is notified in various forms such as sound, light, mobile phone client, etc., that the refrigerator is in a fault state and needs to be maintained; otherwise, the refrigerator proceeds to the refrigerator operation control routine shown in fig. 6.

In some embodiments, the defrosting procedure of the air door can be changed, namely, the exit temperature of the defrosting temperature sensor is not increased, the downtime (generally called the dripping time) after defrosting is prolonged, and the air door is iced and cleaned by using the residual heat after defrosting. Therefore, the downtime after defrosting is prolonged, and the electric heater is started to generate heat to defrost when defrosting; when the machine is shut down after defrosting, the electric heater is closed, the heat is not completely utilized, and at the moment, the waste heat is utilized to defrost the air door, so that the frost or ice is completely removed.

Since the processes and functions implemented by the refrigerator of this embodiment substantially correspond to the embodiments, principles and examples of the apparatus shown in fig. 5, the descriptions of this embodiment are not detailed herein, and refer to the related descriptions in the foregoing embodiments, which are not described herein again.

Through a large number of tests, the technical scheme of the invention is adopted, by detecting the temperature change of the compartment and changing corresponding control logic according to the temperature change condition of the compartment, precooling and rapid ice removal of the air door are carried out in a refrigeration and defrosting mode, the condition that the air door cannot be cleaned in common defrosting due to frosting and excessive icing and the cold energy cannot enter the compartment (namely, the air door cannot be opened when the air door is closed) or the cold energy continuously enters the compartment (namely, the air door cannot be closed when the air door is opened) is avoided, the too high or too low temperature of the compartment is prevented, and the refrigeration reliability is improved.

According to an embodiment of the present invention, there is also provided a storage medium corresponding to a control method of a refrigerator, the storage medium including a stored program, wherein an apparatus in which the storage medium is located is controlled to execute the control method of the refrigerator described above when the program is executed.

Since the processing and functions implemented by the storage medium of this embodiment substantially correspond to the embodiments, principles, and examples of the methods shown in fig. 1 to fig. 4, details are not described in the description of this embodiment, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.

Through a large number of tests, the technical scheme of the invention is adopted, and through detecting the temperature change of the compartment, and changing the corresponding control logic according to the temperature change condition of the compartment, the refrigeration and defrosting modes are controlled to pre-cool and quickly melt ice of the air door, so that the compartment temperature is prevented from being higher or lower, the problem that the ice can be quickly melted after the air door is frozen can be solved, the compartment temperature is prevented from being too high or too low, and the refrigeration reliability is improved.

According to an embodiment of the present invention, there is also provided a processor corresponding to a control method of a refrigerator, the processor being configured to execute a program, wherein the program executes the control method of the refrigerator described above.

Since the processing and functions implemented by the processor of this embodiment substantially correspond to the embodiments, principles, and examples of the methods shown in fig. 1 to fig. 4, details are not described in the description of this embodiment, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.

Through a large number of tests, by adopting the technical scheme of the invention, through detecting the temperature change of the compartment and changing the corresponding control logic according to the temperature change condition of the compartment, the refrigeration and defrosting modes are controlled to carry out precooling and quickly melt ice of the air door, so that the temperature of the compartment is prevented from being too high or too low, the problem that a user is not easy to find the abnormality of the refrigerator when the air door has an unrecoverable fault can be solved, and the refrigeration reliability is improved.

In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.

The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A control method of a refrigerator, comprising:

under the condition that the refrigerator operates in a refrigeration mode, determining whether the operation state of the refrigerator reaches a preset defrosting entry condition or not;

if the running state of the refrigerator reaches the defrosting entering condition, controlling the refrigerator to enter a preset defrosting mode;

and if the running state of the refrigerator does not reach the defrosting entry condition, controlling the refrigerator to continue refrigerating and running, acquiring the compartment temperature of a refrigerating compartment of the refrigerator, and controlling the refrigerating and running process of the refrigerator according to the compartment temperature.

2. The method of claim 1, wherein determining whether the operation state of the refrigerator reaches a preset defrosting entry condition comprises at least one of:

determining whether the current compressor running time of the refrigerator reaches a set compressor running time, and if the current compressor running time of the refrigerator reaches the set compressor running time, determining that the running state of the refrigerator reaches a preset defrosting entry condition;

and determining whether the current refrigerating operation time of the refrigerator reaches a set refrigerating operation time, and if the current refrigerating operation time of the refrigerator reaches the set refrigerating operation time, determining that the operation state of the refrigerator reaches a preset defrosting entry condition.

3. The method for controlling the refrigerator according to claim 1, wherein the controlling the refrigerator to enter a preset defrosting mode comprises:

the method comprises the steps of controlling a compressor of the refrigerator to stop, controlling an evaporator of the refrigerator to stop refrigerating, controlling an electric heater below the evaporator of the refrigerator to be started, and controlling an air door of the refrigerator to be closed.

4. The method for controlling the refrigerator according to claim 1, wherein controlling the cooling operation process of the refrigerator according to the compartment temperature comprises:

if the room temperature is greater than or equal to the sum of a first preset temperature value and a preset temperature difference, controlling an air door of the refrigerator to be in an open state;

under the condition that the air door of the refrigerator is in an open state, if a first temperature change value of the compartment temperature is greater than or equal to a first set temperature difference within a first set time, controlling the air door of the refrigerator to be in the open state continuously; if the first temperature change value of the compartment temperature is smaller than the first set temperature difference within the first set time, determining that an air door of the refrigerator freezes, and controlling the refrigerator to enter the defrosting mode;

under the condition that the air door of the refrigerator is continuously in an open state, if the temperature of the compartment is less than or equal to the difference between a second set temperature and a preset temperature difference, controlling the air door of the refrigerator to be closed; if the temperature of the compartment is greater than the difference between the second set temperature and the preset temperature difference, controlling the air door of the refrigerator to be in an opening state continuously;

under the condition that the air door of the refrigerator is in a closed state, if a second temperature change value of the compartment temperature is greater than or equal to a second set temperature difference within a second set time, controlling the air door of the refrigerator to be in the closed state continuously, and controlling the refrigerator to enter a refrigeration mode after the set defrosting shutdown time so as to control the refrigerator to operate in the refrigeration mode;

and if the second temperature change value of the compartment temperature is smaller than the second set temperature difference within the second set time, determining that the air door of the refrigerator is frozen, and controlling the refrigerator to enter the defrosting mode.

5. The method of controlling a refrigerator according to any one of claims 1 to 4, further comprising:

under the condition that the refrigerator is controlled to enter a preset defrosting mode when the running state of the refrigerator reaches the defrosting entering condition and under the condition that the refrigerator is controlled to enter the defrosting mode when an air door of the refrigerator is frozen, determining whether the current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exiting condition or not;

if the current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition, controlling the refrigerator to exit the defrosting mode;

and if the current defrosting state of the refrigerator in the defrosting mode does not reach the set defrosting exit condition, controlling the refrigerator to be in the defrosting mode continuously.

6. The method as claimed in claim 5, wherein the determining whether the current defrosting state of the refrigerator in the defrosting mode has reached a set defrosting exit condition includes:

determining whether the current defrosting temperature of the refrigerator in the defrosting mode reaches a set defrosting temperature, and if the current defrosting temperature reaches the set defrosting temperature, determining that the current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition;

when the running state of the refrigerator reaches the defrosting entering condition, the refrigerator is controlled to enter a preset defrosting mode, and the set defrosting temperature is equal to a third set temperature; and when the air door of the refrigerator is frozen, controlling the refrigerator to enter the defrosting mode, wherein the set defrosting temperature is higher than a third set temperature.

7. The method of claim 5, wherein controlling the refrigerator to exit the defrosting mode comprises:

controlling an electric heater below an evaporator of the refrigerator to be closed, and controlling an air door of the refrigerator to be opened;

if the third change value of the compartment temperature is greater than or equal to the third set temperature difference within the third set time, controlling the refrigerator to enter a refrigeration mode after the set defrosting shutdown time so as to control the refrigerator to operate in the refrigeration mode; wherein the set defrosting off-time in a case where the refrigerator is controlled to enter the defrosting mode when the damper of the refrigerator is frozen is greater than the set defrosting off-time in a case where the refrigerator is controlled to enter a preset defrosting mode when the operation state of the refrigerator reaches the defrosting entry condition;

and if the third change value of the compartment temperature is smaller than the third set temperature difference within the third set time, determining that the air door of the refrigerator is frozen, and controlling the refrigerator to enter the defrosting mode.

8. The method of controlling a refrigerator according to any one of claims 1 to 4, further comprising:

if the number of times that the refrigerator enters the preset defrosting mode within the fourth set time is larger than or equal to the set number of times, determining that the refrigerator breaks down, and initiating a reminding message that the refrigerator breaks down.

9. A control apparatus of a refrigerator, comprising:

a determination unit configured to determine whether an operation state of the refrigerator reaches a preset defrosting entry condition, in a case where the refrigerator is operated in a cooling mode;

a control unit configured to control the refrigerator to enter a preset defrosting mode if an operation state of the refrigerator reaches the defrosting entry condition;

the control unit is also configured to control the refrigerator to continue refrigerating operation if the operation state of the refrigerator does not reach the defrosting entry condition, acquire the compartment temperature of the refrigerating compartment of the refrigerator, and control the refrigerating operation process of the refrigerator according to the compartment temperature.

10. The control apparatus of a refrigerator according to claim 9, wherein the determining unit determines whether the operation state of the refrigerator reaches a preset defrosting entry condition, including at least one of:

11. The control apparatus of a refrigerator according to claim 9, wherein the control unit controls the refrigerator to enter a preset defrosting mode, comprising:

12. The control apparatus of a refrigerator according to claim 9, wherein the control unit controls a cooling operation process of the refrigerator according to the compartment temperature, comprising:

under the condition that the air door of the refrigerator is in a closed state, if a second temperature change value of the compartment temperature is greater than or equal to a second set temperature difference within a second set time, controlling the air door of the refrigerator to be in the closed state continuously, and controlling the refrigerator to enter a refrigeration mode after the set defrosting shutdown time so as to control the refrigerator to operate in the refrigeration mode; and if the second temperature change value of the compartment temperature is smaller than the second set temperature difference within the second set time, determining that the air door of the refrigerator is frozen, and controlling the refrigerator to enter the defrosting mode.

13. The control apparatus of a refrigerator according to any one of claims 9 to 12, further comprising:

the determining unit is further configured to determine whether a current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition if the current defrosting state of the refrigerator in the defrosting mode reaches the set defrosting exit condition, in a case where the refrigerator is controlled to enter a preset defrosting mode when the operating state of the refrigerator reaches the defrosting entry condition, and in a case where the refrigerator is controlled to enter the defrosting mode when a damper of the refrigerator is frozen;

the control unit is further configured to control the refrigerator to exit the defrosting mode if the current defrosting state of the refrigerator in the defrosting mode reaches a set defrosting exit condition;

the control unit is further configured to control the refrigerator to be continuously in the defrosting mode if the current defrosting state of the refrigerator in the defrosting mode does not reach a set defrosting exit condition.

14. The control apparatus of a refrigerator according to claim 13, wherein the determining unit determines whether a current defrosting state of the refrigerator in the defrosting mode has reached a set defrosting exit condition, including:

when the running state of the refrigerator reaches the defrosting entering condition, the refrigerator is controlled to enter a preset defrosting mode, and the set defrosting temperature is equal to a third set temperature; controlling the refrigerator to enter the defrosting mode when a damper of the refrigerator is frozen, wherein the set defrosting temperature is equal to a third set temperature when the refrigerator is controlled to enter a preset defrosting mode when the running state of the refrigerator reaches the defrosting entering condition; and when the air door of the refrigerator is frozen, controlling the refrigerator to enter the defrosting mode, wherein the set defrosting temperature is higher than a third set temperature.

15. The control apparatus of a refrigerator according to claim 13, wherein the control unit controls the refrigerator to exit the defrosting mode, including:

16. The control apparatus of a refrigerator according to any one of claims 9 to 12, further comprising:

the control unit is further configured to determine that the refrigerator has a fault if the number of times that the refrigerator enters a preset defrosting mode within a fourth set time is greater than or equal to a set number of times, and initiate a warning message that the refrigerator has a fault.

17. A refrigerator, characterized by comprising: the control device of the refrigerator according to any one of claims 9 to 16.

18. A storage medium characterized by comprising a stored program, wherein an apparatus in which the storage medium is located is controlled to perform the control method of the refrigerator according to any one of claims 1 to 8 when the program is executed.

19. A processor, characterized in that the processor is configured to execute a program, wherein the program executes the control method of the refrigerator according to any one of claims 1 to 8.