CN112824785A

CN112824785A - Control method for air-cooled refrigerator and air-cooled refrigerator

Info

Publication number: CN112824785A
Application number: CN201911142637.3A
Authority: CN
Inventors: 姬立胜; 刘建如; 戚斐斐; 宋向鹏; 崔展鹏
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2021-05-21
Anticipated expiration: 2039-11-20
Also published as: CN112824785B; CN115638584A

Abstract

The invention provides a control method for an air-cooled refrigerator and the air-cooled refrigerator. The refrigerator comprises a box body, an evaporator, a fan and a heating unit, wherein the box body is limited with a storage chamber, the evaporator and the fan are arranged in the storage chamber, and a cylinder body of the heating unit is used for placing an object to be processed and is arranged in the storage chamber. The control method comprises the following steps: starting the heating unit; judging whether a defrosting condition for defrosting the evaporator is met; if so, the evaporator is cut off, and the fan is started to utilize the heat generated by the heating unit to defrost the evaporator, so that the electric energy consumed specially for defrosting the evaporator is saved, the heat dissipation efficiency of the barrel is improved, the condition that the temperature of the object to be processed in the barrel is uneven due to heat accumulation is avoided, and the stability of the temperature of the compartment and the user experience are improved.

Description

Control method for air-cooled refrigerator and air-cooled refrigerator

Technical Field

The invention relates to the field of refrigeration and freezing, in particular to a control method for an air-cooled refrigerator and the air-cooled refrigerator.

Background

During the freezing process, the quality of the food is maintained, however, the frozen food needs to be heated before processing or eating. In order to facilitate a user to freeze and heat food, the related art generally defrosts food by providing an electromagnetic wave heating unit in a refrigerator.

However, the electromagnetic wave generating system of the evaporator and the heating unit generates more heat in the working process, which causes the temperature fluctuation of the storage chamber and affects the preservation quality of the food materials in the storage chamber.

Disclosure of Invention

It is an object of a first aspect of the present invention to overcome at least one technical drawback of the prior art and to provide a control method for an air-cooled refrigerator having a heating unit.

A further object of the first aspect of the invention is to save energy.

It is another further object of the present invention to improve the temperature uniformity of the object to be treated.

It is an object of the second aspect of the present invention to provide an air-cooled refrigerator having a heating unit.

According to a first aspect of the present invention, there is provided a control method for an air-cooled refrigerator, the refrigerator including a cabinet defining a storage compartment, an evaporator and a fan provided in the storage compartment, and a heating unit having a barrel for accommodating an object to be processed and provided in the storage compartment, the control method comprising:

starting the heating unit;

judging whether a defrosting condition for defrosting the evaporator is met;

if yes, the evaporator is cut off, and the fan is started.

Optionally, the refrigerator further includes an air duct cover plate forming a compartment air duct together with the vertical side wall of the storage compartment, the air duct cover plate is provided with at least one air supply outlet and one air return inlet which are arranged at intervals, the storage compartment is partitioned into a heating area and at least one storage area, the cylinder is arranged in the heating area, and at least one air supply outlet is arranged in the heating area, the control method further includes:

and when the heating unit is started and the defrosting condition for defrosting the evaporator is met, communicating the air return inlet with at least one air supply outlet arranged in the heating area.

and when the heating unit is started and the defrosting condition for defrosting the evaporator is not met, starting the evaporator and the fan, and communicating the air return inlet with at least one air supply outlet arranged in the heating area.

Optionally, the control method further includes:

after the heating unit stops working, judging whether a defrosting condition for defrosting the evaporator is met;

if yes, the fan is closed, and the evaporator is defrosted.

Optionally, the control method further includes:

judging whether a heating instruction is received or not when defrosting is carried out on the evaporator;

if yes, starting the evaporator and the heating unit after defrosting is finished.

According to a second aspect of the present invention, there is provided an air-cooled refrigerator characterized by comprising:

a case defining a storage compartment;

the evaporator and the fan are arranged in the storage room;

the heating unit comprises a cylinder body for placing an object to be treated, and the cylinder body is arranged in the storage chamber; and

a controller configured to perform any of the control methods described above.

Optionally, the heating unit further comprises:

an electromagnetic wave generating system, at least a part of which is arranged in the cylinder body, for generating electromagnetic waves in the cylinder body to heat the object to be processed; and is

The barrel is formed with a heat dissipation air duct, and the part is arranged in the heat dissipation air duct.

Optionally, the electromagnetic wave generating system comprises:

an electromagnetic wave generation module configured to generate an electromagnetic wave signal;

the radiation antenna is arranged in the heat dissipation air duct and is electrically connected with the electromagnetic wave generation module so as to generate electromagnetic waves with corresponding frequencies according to the electromagnetic wave signals; and

and the signal processing and measuring and controlling circuit is arranged in the heat dissipation air duct and is positioned at the downstream of the radiation antenna.

Optionally, one of the air supply outlet and the air return inlet is arranged in the heating area, and the heating device of the heating unit is at least partially arranged on a return air path from the at least one air supply outlet to the air return inlet.

Optionally, at least one of the air supply openings is disposed in the heating area, the air return opening is disposed in one of the storage areas, and the heating device of the heating unit is at least partially disposed on an air supply path from the air supply opening to the air return opening.

According to the invention, when the heating unit is started and the defrosting condition for defrosting the evaporator is met, the evaporator is cut off and the fan is started, and the heat generated by the heating unit is utilized to defrost the evaporator, so that the electric energy consumed specially for defrosting the evaporator (for example, the evaporator is heated by heating wires) is saved, the heat dissipation efficiency of the barrel is improved, the condition that the temperature of the object to be processed is not uniform due to heat accumulation in the barrel is avoided, and the stability of the temperature of the room and the user experience are improved. Furthermore, unexpectedly, by using the heat generated by defrosting for evaporator defrosting, the number of times of defrosting for the evaporator can be effectively reduced, and the problem of large temperature fluctuation of the compartment is avoided.

Furthermore, the evaporator and the fan are started when the heating unit is started and the defrosting condition for defrosting the evaporator is not met, so that the heat dissipation efficiency of the cylinder is further improved, the temperature uniformity of the object to be processed is improved, the temperature fluctuation of the room is further avoided, and the food material preservation quality is improved.

Furthermore, the heating device part of the heating unit is arranged on the return air path from the air supply outlet to the return air inlet, so that the temperature interference of heat generated by heating on the storage area is avoided, the preservation quality of food materials in the storage area is ensured, and particularly, the heating device of the heating unit can be radiated while a refrigerating system supplies air to any storage area for refrigeration, so that the utilization rate of cold energy is improved, the radiating efficiency of the heating device is further improved, and the temperature fluctuation of the storage area is avoided.

Furthermore, the radiation antenna and the signal processing and measuring and controlling circuit are arranged in the heat dissipation air duct of the cylinder, and the signal processing and measuring and controlling circuit is arranged at the downstream of the radiation antenna, so that the heat dissipation efficiency of the radiation antenna is improved, the heat radiation of the radiation antenna to the object to be processed is reduced, the temperature uniformity of the object to be processed is effectively improved, and the local overheating phenomenon is avoided.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, 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 elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic cross-sectional view of an air-cooled refrigerator according to one embodiment of the present invention showing a flow path of a cold airflow for cooling a storage area;

FIG. 2 is a schematic cross-sectional view of the air-cooled refrigerator of FIG. 1 illustrating a flow path of a cold airflow for dissipating heat from a heating zone;

FIG. 3 is a schematic block diagram of a controller of one embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of an air-cooled refrigerator illustrating a cold airflow flow path for cooling a storage area according to one embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of the air-cooled refrigerator of FIG. 4 showing a flow path of a cool airflow for dissipating heat from a heating zone;

FIG. 6 is a schematic cross-sectional view of a compartment duct according to one embodiment of the invention;

FIG. 7 is a schematic block diagram of a heating unit according to one embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view of the heating unit shown in FIG. 5;

fig. 9 is a flowchart of a control method for an air-cooled refrigerator according to an embodiment of the present invention;

fig. 10 is a detailed flowchart of a control method for an air-cooled refrigerator according to the present invention.

Detailed Description

FIG. 1 is a schematic cross-sectional view of an air-cooled refrigerator 100 according to one embodiment of the present invention showing a flow path of a cold airflow for cooling a storage area 112; fig. 2 is a schematic cross-sectional view of the air-cooled refrigerator 100 shown in fig. 1, illustrating a flow path of a cool airflow for dissipating heat from the heating region 111. Referring to fig. 1 and 2, the air-cooled refrigerator 100 may include a cabinet 110, a refrigeration system, an air duct cover 150, a heating unit 200, and a controller 160.

The housing 110 may define a storage compartment. One box door can be arranged at the front opening of the storage chamber and used for opening and closing the storage chamber.

The refrigeration system may be a vapor compression refrigeration system including a compressor, a condenser, a throttling element, an evaporator 120, and a supply fan 130.

The air duct cover plate 150 may be disposed in the storage compartment and form a compartment air duct together with the vertical sidewall of the storage compartment. The evaporator 120 and the blower fan 130 may be disposed in the compartment air duct. The air duct cover 150 may be provided with at least one air supply outlet 151 and one air return outlet 152 disposed at an interval to deliver cold energy to the storage compartment.

In the present invention, at least one is one, two, or more than two. The vertical sidewall may be a rearward sidewall or a lateral sidewall. In the illustrated embodiment, the duct cover 150 is sandwiched with the rearward facing sidewall of the storage compartment to form a compartment duct.

At least one partition 140 extending horizontally may be further provided in the storage compartment to divide the storage compartment into a heating zone 111 and at least one storage zone 112.

The heating unit 200 may include a cylinder 210 for placing an object to be processed and having a pick-and-place port formed therein, and a door for opening and closing the pick-and-place port. Wherein, the cylinder 210 can be disposed in the heating area 111.

Fig. 3 is a schematic block diagram of the controller 160 of fig. 1. Referring to fig. 3, the controller 160 may include a processing unit 161 and a storage unit 162. Wherein the storage unit 162 stores a computer program 163, the computer program 163 being executed by the processing unit 161 for implementing the control method of the embodiment of the present invention.

In particular, the controller 160 may be configured to switch off the evaporator 120 and start the air supply fan 130 when the heating unit 200 is started and it is determined that a defrosting condition for defrosting the evaporator 120 is satisfied, so as to defrost the evaporator 120 by using the heat generated by the heating unit 200, thereby saving electric energy consumed for defrosting the evaporator 120, improving heat dissipation efficiency of the barrel 210, preventing uneven temperature of the object to be processed due to heat accumulation in the barrel 210, and improving stability of the compartment temperature and user experience.

Unexpectedly, the heat generated by unfreezing is used for defrosting the evaporator, so that the times of specially defrosting the evaporator can be effectively reduced, and the problem of large temperature fluctuation of the compartment is avoided.

In the present invention, the defrosting condition for defrosting the evaporator 120 may be that the evaporator 120 is less than or equal to a preset temperature threshold, or that the temperature change rate of the storage compartment is less than or equal to a preset rate threshold when the evaporator 120 is in operation.

The evaporator 120 may be cut off to block a refrigerant flow path between the compressor and the evaporator 120, or the compressor may be turned off. The start-up evaporator 120 may be a refrigerant flow path that communicates between the compressor and the evaporator 120 and starts up the compressor.

The controller 160 may be configured to communicate the return air inlet 152 and the at least one supply air outlet 151, that is, at least one supply air outlet 151 communicates with the return air inlet 152, when the heating unit 200 is activated and it is determined that a defrosting condition for defrosting the evaporator 120 is satisfied.

In some embodiments, the controller 160 may be configured to communicate the air return opening 152 and the at least one air supply opening 151 when the heating unit 200 is started and it is determined that the defrosting condition for defrosting the evaporator 120 is not satisfied, and start the evaporator 120 and the air supply fan 130, so as to further improve the heat dissipation efficiency of the drum, improve the temperature uniformity of the object to be processed, further avoid the compartment temperature from greatly fluctuating, and improve the food preservation quality.

In some embodiments, the controller 160 may be configured to turn off the air supply fan 130 and perform specialized defrosting of the evaporator 120 after the heating unit 200 stops operating and when a defrosting condition for defrosting the evaporator 120 is still satisfied.

In the present invention, the specialized defrosting of the evaporator 120 may be heating the evaporator 120 using a heating wire, or adjusting a reversing valve of a refrigeration system to release heat from the evaporator 120.

In some embodiments, the controller 160 may be configured to restart the evaporator 120 and the heating unit 200 after the defrosting is finished in case of defrosting the evaporator 120 and determining that the heating instruction is received, so as to avoid the excessive temperature fluctuation of the compartment.

In particular, at least one air supply outlet 151 and/or air return outlet 152 may be provided to the heating zone 111. That is, the compartment duct is configured to blow an air flow toward the heating area 111, and/or air in the storage compartment is returned to the compartment duct to pass through the heating area 111 first.

Referring to fig. 1 and 2, in some embodiments, a supply air outlet 151 and a return air outlet 152 may be provided to the heating zone 111. The heating device of the heating unit 200 can be at least partially disposed on the return air path from the at least one air supply outlet 151 to the return air inlet 152, so as to avoid the heat generated by heating from interfering with the preservation temperature of the storage area 112, ensure the preservation quality of the food material in the storage area 112, and independently dissipate the heat of the heating area 111, thereby improving the heat dissipation efficiency of the heating device and the defrosting efficiency of the evaporator 120. In the present invention, the return air path from at least one of the supply air ports 151 to the return air port 152 is an overlapped portion of the flow path of the air flow from each of the supply air ports 151 to the return air port 152.

In other embodiments, at least one supply outlet 151 may be disposed in at least one storage area 112, and a return outlet 152 may be disposed in the heating area 111. The heating device of the heating unit 200 can be at least partially arranged on the return air path from the air supply outlet 151 to the return air inlet 152, so that the heat generated by heating is prevented from interfering with the preservation temperature of the storage area 112, the preservation quality of food materials in the storage area 112 is ensured, and when the refrigerating system supplies air to any storage area 112 for refrigeration, the heating device of the heating unit 200 can be cooled, and the utilization rate of cold energy is improved.

FIG. 4 is a schematic cross-sectional view of an air-cooled refrigerator 100 according to one embodiment of the present invention showing a flow path of a cold airflow for cooling a storage area 112; fig. 5 is a schematic cross-sectional view of the air-cooled refrigerator 100 shown in fig. 4, illustrating a flow path of a cool airflow for dissipating heat from the heating region 111. Referring to fig. 4 and 5, in still other embodiments, at least one supply air outlet 151 may be disposed in the heating zone 111, and an air return outlet 152 may be disposed in one of the storage zones 112. The heat generating device of the heating unit 200 may be at least partially disposed on an air supply path from the air supply outlet 151 to the air return outlet 152 in the heating area 111 to independently dissipate heat from the heating area 111, thereby improving heat dissipation efficiency of the heat generating device.

In some further embodiments, the heating unit 200 may further include a cover 230 to divide the inner space of the cylinder 210 into the heating chamber 211 and the heat dissipation duct 212. The heat generating device of the heating unit 200 may be at least partially disposed within the heat dissipation air duct 212.

The heat dissipating air duct 212 may be disposed at a lower portion of the barrel 210 to improve stability of the heat generating device and facilitate a user to put a proper size of the object to be processed into the heating chamber 211.

In still further embodiments, the heat generating device of the heating unit 200 may be disposed at an upper portion, a lower portion of the drum 210, or within the door body.

In the embodiment in which the air return opening 152 is disposed in the heating area 111, the heating area 111 may be disposed below the storage areas 112, that is, the air return opening 152 is disposed below the storage areas 112, so as to improve the cooling efficiency of the storage areas 112 and accurately cool each storage area 112 independently.

In embodiments where the supply air outlet 151 is disposed within the heating zone 111, the heating chamber 211 may be vented to receive a flow of cool air from the supply air outlet 151. For example, in the embodiment where the heat generating device is disposed on the blowing path, the number of the blowing openings 151 in the heating area 111 may be two, and the cold air flows are blown to the heating chamber 211 and the heat generating device, respectively.

The controller 160 may be configured to conduct only the return air inlet 152 and the supply air outlet 151 provided to the heating area 111 when the heating unit 200 is activated and it is determined that a defrosting condition for defrosting the evaporator 120 is satisfied, to further improve heat dissipation efficiency and defrosting efficiency.

The controller 160 may be configured to keep the air blowing port 151, which blows air to the heating zone 111, in communication with the return air port 152 at all times during operation of the heating unit 200 when the heating unit 200 is activated and it is determined that the defrosting condition for defrosting the evaporator 120 is not satisfied.

When the temperature of the object to be processed or the time for heating the object to be processed is equal to or greater than the preset threshold, the air blowing port 151 blowing the cold air flow to the heating chamber 211 may be configured to communicate with the air return port 152, so as to avoid overheating of the outside of the object to be processed and improve the temperature uniformity of the object to be processed.

In some further embodiments, the controller 160 may be configured to operate the air supply fan 130 at a preset first rotation speed when the defrosting condition for defrosting the evaporator 120 is not satisfied and the temperature of one of the storage areas 112 is equal to or higher than a preset cooling temperature, at a preset second rotation speed when the defrosting condition for defrosting the evaporator 120 is not satisfied, the temperature of each of the storage areas 112 is less than the cooling temperature, and the heating unit 200 is operated, and at a preset third rotation speed when the heating unit 200 is operated and the defrosting condition for defrosting the evaporator 120 is satisfied. Wherein the first rotational speed is greater than the second rotational speed. For example, the first rotational speed may be a rated rotational speed of the fan 130, and the second rotational speed may be 50-70% of the rated rotational speed of the fan 130. The third rotational speed may be less than or equal to the second rotational speed.

FIG. 6 is a schematic cross-sectional view of a compartment duct according to one embodiment of the invention. Referring to fig. 6, in some embodiments, the air duct cover plate 150 may be sandwiched with the sidewall of the storage compartment to form an air return portion of the compartment air duct, and the evaporator 120 may be disposed at the air return portion. The air duct cover 150 may be formed with at least one air supply part of the compartment air duct, and each air supply part may be provided with at least one air supply outlet 151 and one air inlet.

The supply fan 130 may be disposed downstream of the evaporator 120, including a volute and an impeller disposed within the volute. The spiral case is rotatably disposed and an air outlet thereof is abutted to an air inlet of an air supply part, so that the cold air cooled by the evaporator 120 is delivered to the air supply part and blown out by an air supply outlet 151 of the air supply part.

In other embodiments, the duct cover 150 may be sandwiched with the sidewalls of the storage compartment to form a compartment duct. At least one of the supply air ports 151 may be provided with a damper, respectively, to be in controlled communication with the return air port 152.

Fig. 7 is a schematic structural view of a heating unit 200 according to an embodiment of the present invention. Referring to fig. 7, in some embodiments, the heating unit 200 may further include an electromagnetic wave generation system. The electromagnetic wave generating system may be at least partially disposed in the cylinder 210 or reach the cylinder 210 to generate electromagnetic waves in the cylinder 210 to heat the object to be processed. That is, in this embodiment, the heat generating device of the heating unit 200 is an electromagnetic wave generating system.

The cylinder 210 and the door body can be respectively provided with electromagnetic shielding characteristics, so that the door body is in conductive connection with the cylinder 210 in a closed state, and electromagnetic leakage is prevented.

In some embodiments, the electromagnetic wave generation system may include an electromagnetic wave generation module 261, a power supply module 262, and a radiation antenna 250.

The electromagnetic wave generation module 261 may be configured to generate an electromagnetic wave signal. The power supply module 262 may be disposed to be electrically connected to the electromagnetic wave generation module 261 to supply power to the electromagnetic wave generation module 261, so that the electromagnetic wave generation module 261 generates an electromagnetic wave signal.

The radiation antenna 250 may be disposed in the cylinder 210 and electrically connected to the electromagnetic wave generating module 261 to generate electromagnetic waves with corresponding frequencies according to the electromagnetic wave signals to heat the object to be processed in the cylinder 210.

In some further embodiments, the cylinder 210 may be made of metal to act as a receiver for the radiating antenna 250. In this embodiment, the barrel 210 itself is the electromagnetic shielding feature of the barrel 210.

In still further embodiments, the electromagnetic wave generation system further includes a receiving plate disposed opposite the radiation antenna 250 and electrically connected to the electromagnetic wave generation module 261. In this embodiment, the inner wall of the cylinder 210 may be coated with a metal coating or attached with a metal mesh or the like as an electromagnetic shielding feature of the cylinder 210.

In some further embodiments, the electromagnetic wave generation system may further include a signal processing and measurement and control circuit 270. Specifically, the signal processing and measurement and control circuit 270 may include a control unit 271, a matching unit 272, and a detection unit 273.

The matching unit 272 may be connected in series between the electromagnetic wave generating module 261 and the radiation antenna 250, and is configured to adjust a load impedance of the electromagnetic wave generating module 261 by adjusting its own impedance, and improve a load matching degree of the electromagnetic wave generating module 261, so that food with different fixed attributes (type, weight, volume, etc.) or food has more electromagnetic wave energy absorbed by the object to be processed during a temperature change process, thereby improving a heating rate.

The detection unit 273 may be connected in series between the matching unit 272 and the electromagnetic wave generation module 261, and configured to detect a forward power signal output by the electromagnetic wave generation module 261 and a reverse power signal returned to the electromagnetic wave generation module 261.

The control unit 271 may be configured to receive a heating instruction input by a user, determine a matching degree of impedance matching according to the forward power signal and the reverse power signal, and control the electromagnetic wave generation module 261 to operate according to an impedance value of the matching unit 272 that achieves optimal load matching of the electromagnetic wave generation module 261. Wherein, the smaller the ratio of the power of the reverse power signal to the power of the forward power signal is, the higher the matching degree is.

The signal processing and monitoring circuit 270 may be integrated on a circuit board to facilitate installation and maintenance of the signal processing and monitoring circuit 270.

Fig. 8 is a schematic sectional view of the heating unit 200 shown in fig. 7. Referring to fig. 7 and 8, in some further embodiments, the radiation antenna 250 and the signal processing and measurement and control circuit 270 may be disposed in the heat dissipation duct 212 to improve the heat dissipation efficiency of the radiation antenna 250 and the signal processing and measurement and control circuit 270, reduce the heat radiation amount of the object to be processed, and avoid local overheating of the object to be processed.

The signal processing and monitoring circuit 270 may be disposed downstream of the radiating antenna 250 to further improve the heat dissipation efficiency of the radiating antenna 250 and further improve the temperature uniformity of the object to be processed.

The air inlet and the air outlet of the heat dissipation air duct 212 may be respectively provided with a metal mesh 280 to be electrically connected with the electromagnetic shielding feature of the cylinder 210, so as to prevent electromagnetic wave leakage.

In other embodiments, the heat generating device of the heating unit 200 may also be a heating tube.

In some embodiments, the chest may further define another storage compartment, and another door or doors may be disposed at a forward opening of the storage compartment. The refrigeration system may further include another evaporator connected in series or in parallel with the evaporator 120, and disposed in the another storage compartment.

Fig. 9 is a flowchart of a control method for the air-cooled refrigerator 100 according to one embodiment of the present invention. Referring to fig. 9, the control method for the air-cooled refrigerator 100 performed by the controller 160 according to any of the above embodiments of the present invention may include the steps of:

step S902: the heating unit 200 is activated.

Step S904: it is judged whether or not a defrosting condition for defrosting the evaporator 120 is satisfied.

Step S906: if so, the evaporator 120 is turned off and the blower fan 130 is activated.

According to the invention, when the heating unit 200 is started and the defrosting condition for defrosting the evaporator 120 is met, the evaporator 120 is cut off and the fan 130 is started, and the heat generated by the heating unit 200 is utilized to defrost the evaporator 120, so that the electric energy specially consumed for defrosting the evaporator 120 is saved, the heat dissipation efficiency of the cylinder 210 is improved, the condition that the temperature of the object to be processed is not uniform due to heat accumulation in the cylinder 210 is avoided, and the stability of the temperature of the room and the user experience are improved.

In some further embodiments based on at least one air supply opening 151 disposed in the heating area 111, step S906 may further include communicating the return air opening 152 with the at least one air supply opening 151 disposed in the heating area 111 to improve defrosting efficiency of defrosting by heat of the heating unit 200.

In some further embodiments based on at least one air supply outlet 151 disposed in the heating area 111, when the determination in step S904 is negative, the control method of the present invention starts the evaporator 120 and the air supply fan 130, and communicates the return air inlet 152 with the at least one air supply outlet 151 disposed in the heating area 111, so as to further improve the heat dissipation efficiency of the barrel 210, improve the temperature uniformity of the object to be processed, further avoid large temperature fluctuation of the room temperature, and improve the food preservation quality.

In some embodiments, the control method of the present invention may further include determining whether a defrosting condition for defrosting the evaporator 120 is satisfied after the heating unit 200 stops operating, and if the defrosting condition is still satisfied, turning off the air supply fan 130 and performing specialized defrosting on the evaporator 120.

In the present invention, the case where the heating unit 200 stops operating may include the completion of heating, the opening of a door during heating, and the like.

In some embodiments, the control method of the present invention may further include determining whether a heating command is received when defrosting the evaporator 120, and if the heating command is received, starting the evaporator 120 and the heating unit 200 after defrosting is finished to avoid an excessive temperature fluctuation of the compartment.

Fig. 10 is a detailed flowchart of a control method for the air-cooled refrigerator 100 according to the present invention, in which "Y" represents "yes" and "N" represents "no". Referring to fig. 10, the control method for the air-cooled refrigerator 100 of the present invention may include the following detailed steps:

step S1002: it is determined whether a heating instruction is acquired or a defrosting condition for defrosting the evaporator 120 is satisfied. If the heating instruction is acquired, step S1012 is executed; if the defrosting condition is satisfied, execute step S1022; if not, step S1002 is repeated.

Step S1012: the electromagnetic wave generating system is controlled to operate, the evaporator 120 and the blowing fan 130 are started, and a return air inlet 152 and at least one blowing air inlet 151 provided in the heating zone 111 are communicated. Step S1014 and step S1018 are executed.

Step S1014: and judging whether heating is finished or not. If yes, go to step S1016; if not, the process returns to step S1012. In this step, whether heating is completed or not may be determined according to the heating time, the surface temperature of the object to be treated, or the rate of change in the dielectric coefficient of the object to be treated.

Step S1016: the electromagnetic wave generating system is shut down. The evaporator 120 and the air supply fan 130 are started and stopped according to the room temperature. Returning to step S1002, the next cycle is started.

Step S1018: it is judged whether or not a defrosting condition for defrosting the evaporator 120 is satisfied. If yes, go to step S1020; if not, the process returns to step S1012.

Step S1020: the evaporator 120 is turned off, and the evaporator 120 and the supply fan 130 continue to operate. Return is made to step S1018.

Step S1022: the evaporator 120 is turned off, the supply fan 130 is turned off, and the heater wire is activated to heat the evaporator 120. Step S1024 and step S1028 are executed.

Step S1024: and judging whether defrosting is finished or not. If yes, go to step S1026; if not, the process returns to step S1022. In this step, whether defrosting is completed may be determined according to the operating time of the heating wire or the surface temperature of the evaporator 120.

Step S1026: the heating wires are turned off and the evaporator 120 and fan 130 are activated to re-cool the compartment. Returning to step S1002, the next cycle is started.

Step S1028: and judging whether a heating instruction is acquired. If yes, executing step S1024, and starting heating after defrosting is finished; if not, the process returns to step S1022.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A control method for an air-cooled refrigerator, the refrigerator comprising a cabinet defining a storage compartment, an evaporator and a fan disposed in the storage compartment, and a heating unit having a barrel for accommodating an object to be treated and disposed in the storage compartment, the control method comprising:

starting the heating unit;

judging whether a defrosting condition for defrosting the evaporator is met;

if yes, the evaporator is cut off, and the fan is started.

2. The control method according to claim 1, wherein the refrigerator further comprises an air duct cover plate which forms a compartment air duct together with the vertical side wall of the storage compartment, the air duct cover plate is provided with at least one air supply opening and one air return opening which are arranged at intervals, the storage compartment is divided into a heating area and at least one storage area, the cylinder is arranged in the heating area, and at least one air supply opening is arranged in the heating area, and the control method further comprises:

3. The control method according to claim 1, wherein the refrigerator further comprises an air duct cover plate which forms a compartment air duct together with the vertical side wall of the storage compartment, the air duct cover plate is provided with at least one air supply opening and one air return opening which are arranged at intervals, the storage compartment is divided into a heating area and at least one storage area, the cylinder is arranged in the heating area, and at least one air supply opening is arranged in the heating area, and the control method further comprises:

4. The control method according to claim 1, characterized by further comprising:

if yes, the fan is closed, and the evaporator is defrosted.

5. The control method according to claim 1, characterized by further comprising:

6. An air-cooled refrigerator, comprising:

a case defining a storage compartment;

the evaporator and the fan are arranged in the storage room;

a controller configured to perform the control method of any one of claims 1-5.

7. The air-cooled refrigerator of claim 6, wherein the heating unit further comprises:

8. The air-cooled refrigerator according to claim 7, wherein the electromagnetic wave generating system comprises:

9. An air-cooled refrigerator, comprising:

the refrigerator comprises a box body, a heating area, a storage area and a storage space, wherein the box body is limited by the storage space and is divided into the heating area and the storage area;

the air channel cover plate and the vertical side wall of the storage chamber form a chamber air channel together, and at least one air supply outlet and one air return inlet which are arranged at intervals are formed in the air channel cover plate;

the evaporator and the fan are arranged in the compartment air duct;

the heating unit comprises a cylinder body for placing an object to be treated, and the cylinder body is arranged in the heating area; and

a controller; wherein

The air supply outlet and the air return inlet are arranged in the heating area, and the heating device of the heating unit is at least partially arranged on an air return path from the air supply outlet to the air return inlet; and is

The controller is configured to perform the control method of any one of claims 2-3.

10. An air-cooled refrigerator, comprising:

the evaporator and the fan are arranged in the compartment air duct;

a controller; wherein

The heating device of the heating unit is at least partially arranged on an air supply path from the air supply outlet to the air return inlet; and is