CN113375414B

CN113375414B - Return air temperature control mechanism, return air temperature control method, operation control device and refrigerator

Info

Publication number: CN113375414B
Application number: CN202010117549.4A
Authority: CN
Inventors: 盛庆赫; 唐学强; 刘运斌; 刘华
Original assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Current assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Priority date: 2020-02-25
Filing date: 2020-02-25
Publication date: 2022-09-27
Anticipated expiration: 2040-02-25
Also published as: CN113375414A

Abstract

The invention discloses a return air temperature control mechanism, a return air temperature control method, an operation control device and a refrigerator, wherein the refrigerator is provided with a refrigeration evaporator and a cold storage area air inlet, the return air temperature control mechanism comprises at least two temperature control rooms and a refrigeration evaporator air duct, each temperature control room comprises an air supply outlet and an air return inlet, the air return outlet, the air supply outlet and the cold storage area air inlet are sequentially arranged along the air supply direction of the refrigeration evaporator air duct, the refrigeration evaporator is provided with a heating device, the refrigeration evaporator is positioned between the air return outlet and the cold storage area air inlet, the heating device is positioned between the air supply outlet and the cold storage area air inlet, and cold energy generated by the refrigeration evaporator enters the temperature control rooms through the air supply outlets. When the temperature control chamber is cooled, the temperature of the airflow entering the refrigeration area is increased by the heating device, and the temperature of the refrigeration area is too low even if the temperature reduction amplitude of the temperature control chamber is large, so that the temperature change range of the temperature control chamber can be effectively enlarged, the wide-range temperature regulation of the temperature control chamber is realized, and different storage requirements are met.

Description

Return air temperature control mechanism, return air temperature control method, operation control device and refrigerator

Technical Field

The invention relates to the field of refrigerators, in particular to a return air temperature control mechanism, a return air temperature control method, an operation control device and a refrigerator.

Background

With the subdivision of temperature zones brought by the technical upgrade and the increasingly abundant food materials available for users, a plurality of refined storage spaces are needed, and the demand of creating a refrigerator with multiple temperature zones to realize different functions is urgent. The existing refrigerator is generally provided with a cold storage area and a compartment, the cold storage area and the compartment are arranged in a refrigerating chamber, when the compartment is required to be cooled, the cold storage area can also be cooled along with the compartment, the temperature of the cold storage area is too low for preventing, the temperature variable range of the temperature control compartment is very small, and different storage requirements cannot be met.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a return air temperature control mechanism, a return air temperature control method, an operation control device and a refrigerator, which can realize wide temperature adjustment of a temperature control chamber and meet different storage requirements.

In a first aspect, an embodiment of the present invention provides a return air temperature control mechanism, which is applied to a refrigerator having a refrigeration evaporator and a refrigeration area air inlet, and includes a rotary table, a driving device for controlling rotation of the rotary table, at least two temperature control compartments and a refrigeration evaporator air duct, where each temperature control compartment includes an air supply outlet and a return air inlet, and the return air inlet, the air supply outlet and the refrigeration area air inlet are sequentially arranged along an air supply direction of the refrigeration evaporator air duct and are all communicated with the refrigeration evaporator air duct;

the refrigerating evaporator is arranged in the refrigerating evaporator air duct, the refrigerating evaporator is provided with a heating device, the refrigerating evaporator is positioned between the air return opening and the air inlet of the refrigerating area, the heating device is positioned between the air supply opening and the air inlet of the refrigerating area, and cold energy generated by the refrigerating evaporator enters the temperature control compartment through the air supply opening;

the rotary disc is provided with a communication port which can correspond to the air return port, and the air return port is communicated with the air channel of the refrigeration evaporator through the communication port.

Because the air return opening, the air supply opening and the air inlet of the refrigeration area are sequentially arranged along the air supply direction of the air duct of the refrigeration evaporator, the heating device is arranged on the refrigeration evaporator and is positioned between the air supply opening and the air inlet of the refrigeration area, the temperature of air flow entering the refrigeration area is increased by the heating device when the temperature control chamber is cooled, the cooling amplitude of the refrigeration area can be smaller than that of the temperature control chamber, and the normal cooling of the temperature control chamber can not be influenced. Therefore, even if the temperature reduction range of the temperature control chamber is large, the temperature of the cold storage area cannot be too low, the temperature change range of the temperature control chamber can be effectively expanded, wide temperature adjustment of the temperature control chamber is realized, and different storage requirements are met.

In addition, by arranging the heating device on the refrigeration evaporator, when the heating device is started, the frosting of the refrigeration evaporator can be reduced, and the cooling effect of the refrigeration evaporator is ensured.

According to some embodiments of the invention, the refrigeration evaporator comprises a first side wall far away from the air supply outlet, and the heating device is arranged on the first side wall, so that on one hand, the temperature of air flow entering the air supply outlet can be prevented from being influenced by the heating device, and the cooling efficiency of the temperature control compartment is reduced; on the other hand, the action range of the heating device on the refrigeration evaporator can be enlarged, and the effect of preventing the refrigeration evaporator from frosting is improved.

According to some embodiments of the invention, a temperature sensor is disposed within the refrigerated evaporator air duct, the temperature sensor being located forward of the refrigerated evaporator in a direction of air supply to the refrigerated evaporator air duct. Through setting up temperature sensor, can monitor the air current temperature who gets into the air intake of cold-storage area, be convenient for adjust heating device's heating power for temperature compensation to the cold-storage area is more accurate.

According to some embodiments of the present invention, the driving device controls the turntable to rotate according to a temperature control request, so that the communication port communicates with the air return port of the temperature control compartment corresponding to the temperature control request, and the temperature control request is used for controlling the temperature of the temperature control compartment.

The temperature control chamber is provided with an air supply outlet and an air return opening, the temperature control chamber realizes the circulation with the air outside the temperature control chamber through the air supply outlet and the air return opening, the air outside the temperature control chamber can enter the temperature control chamber from the air supply outlet and flow out from the air return opening, and the heat exchange between the inside and the outside of the temperature control chamber can be realized through the flow of the air in the process.

By controlling the rotation angle of the turntable, the communication port on the turntable can be communicated with the air return port of the temperature control chamber, and the communication port on the turntable can also be staggered with the air return port of the temperature control chamber, so that the air return port is closed. The communicating port on the control turntable can be controlled to be communicated with the air return ports of the temperature control rooms with required temperature control, so that the communicating state of the air return ports of the temperature control rooms can be controlled through the turntable, and the temperature of the temperature control rooms can be controlled.

It should be noted that, after the air return opening is closed, the air subsequently entering the temperature control chamber through the air supply opening cannot flow out from the closed air return opening, so that the air pressure in the temperature control chamber is higher than the air pressure outside the air return opening, and therefore, under the action of the air pressure difference between the air return opening and the air return opening, after the communication opening of the driving device controlling the turntable is communicated with the air return opening, and before the air pressure of the communication opening and the air return opening is balanced, the air in the temperature control chamber can flow out from the air return opening rapidly, so that the temperature regulation efficiency of the temperature control chamber can be improved.

According to some embodiments of the invention, a projection of the return air opening to the direction of the turntable overlaps with a rotation path of the communication opening. The rotating path of the communication port is an area formed in the process that the communication port rotates around the rotating shaft of the rotating disk. When the turntable rotates, a rotating path can be formed in the rotating process of the communication port, and because the projection of the center of the air return port to the direction of the turntable is overlapped with the rotating path of the communication port, the projection of the communication port and the air return port to the direction of the turntable can be at least partially overlapped by controlling the rotation of the turntable, so that the communication port is communicated with the air return port of the temperature control chamber, and the communication state of the air return port is controlled.

According to some embodiments of the present invention, the temperature control device comprises a first temperature control chamber and a second temperature control chamber, the first temperature control chamber comprises a first air return opening, the second temperature control chamber comprises a second air return opening, and the driving device controls the communication opening of the turntable to rotate to a second communication position according to a temperature control request, the first communication position corresponds to the first air return opening, and the second communication position corresponds to the second air return opening.

If the second temperature control compartment needs temperature control, the driving device can control the communication port of the turntable to rotate from the first communication position to the second communication position according to the temperature control request, so that the communication port is communicated with the second air return port, and temperature control of the second temperature control compartment is realized.

According to some embodiments of the invention, the temperature control room array comprises four temperature control rooms, the turntable is arranged on one side of the temperature control room array, the turntable is a disc covering air return openings of the four temperature control rooms, and an air supply opening of the temperature control room is arranged on one side of the temperature control room array corresponding to the turntable and avoids the coverage range of the disc. The combination of disc and the temperature control compartment array of field style of calligraphy can reduce return air control mechanism's occupation space to because return air inlet and supply-air outlet can set up the one side at temperature control compartment array, when return air temperature control mechanism uses when the refrigerator, can also simplify the wind channel design.

In a second aspect, an embodiment of the present invention provides a return air temperature control method, which is applied to a refrigerator having a refrigeration evaporator and a refrigeration area air inlet, and is characterized in that the refrigerator includes a turntable, a driving device for controlling the rotation of the turntable, at least two temperature control compartments and a refrigeration evaporator air duct, the temperature control compartments include an air supply opening and a return air opening, the air supply opening and the refrigeration area air inlet are sequentially arranged along an air supply direction of the refrigeration evaporator air duct and are all communicated with the refrigeration evaporator air duct, the refrigeration evaporator is arranged in the refrigeration evaporator air duct, the refrigeration evaporator is provided with a heating device, the refrigeration evaporator is located between the air supply opening and the refrigeration area air inlet, the cooling energy generated by the refrigeration evaporator enters the temperature control compartments through the air supply opening, the turntable is provided with a communication port which can correspond to the air return port, the air return port is communicated with the air channel of the refrigeration evaporator through the communication port, and the return air temperature control method comprises the following steps:

acquiring a first temperature control request for controlling the temperature of the temperature control compartment;

and controlling the heating device to start and stop according to the first temperature control request.

When the temperature control room carries out temperature control according to the first temperature control request, the heating device is started, and when the temperature control room is cooled, the heating device enters the air flow temperature of the cold storage area, so that the cooling amplitude of the cold storage area is smaller than that of the temperature control room, and the normal cooling of the temperature control room is not influenced. Therefore, even if the temperature reduction amplitude of the temperature control chamber is large, the temperature of the cold storage area cannot be too low, the temperature change range of the temperature control chamber can be effectively expanded, wide temperature adjustment of the temperature control chamber is realized, and different storage requirements are met.

In addition, when the heating device is started, the frosting of the refrigeration evaporator can be reduced, and the cooling effect of the refrigeration evaporator is ensured.

According to some embodiments of the invention, the controlling the heating device to start and stop according to the first temperature control request comprises:

acquiring a first difference value between the target temperature of the temperature control compartment and the temperature of the refrigerating area;

according to the comparison result of the first difference value and a preset first threshold value, executing at least one of the following steps;

when the first difference value exceeds the preset first threshold value, starting the heating device;

and when the first difference value does not exceed the preset first threshold value, the heating device is closed.

The method comprises the steps of obtaining a first difference value between the target temperature of a temperature control chamber and the temperature of a refrigerating area, comparing the first difference value with a preset first threshold value, and when the first difference value exceeds the preset first threshold value, indicating that the difference between the target temperature of the temperature control chamber for cooling and the temperature of the refrigerating area is too large, and needing to start the heating device to adjust the temperature of airflow entering the refrigerating area. By adopting the first threshold judgment mode, whether the heating device is started or not can be controlled, and when the difference between the target temperature for cooling the temperature control compartment and the temperature of the cold storage area is not large, the heating device does not need to be started, so that the energy consumption is saved.

According to some embodiments of the invention, the return air temperature control method further comprises:

according to the comparison result of the first difference value and a preset second threshold value, wherein the second threshold value is larger than the first threshold value, at least one of the following steps is executed;

when the first difference value exceeds the preset second threshold value, the heating power of the heating device is increased;

and when the first difference value exceeds the preset second threshold value, the rotating speed of the refrigerating fan is increased.

When the first difference value exceeds the preset second threshold value, the heating power of the heating device can be increased to ensure the temperature regulation effect of the refrigerating area; or when the first difference value exceeds the preset second threshold value, the rotating speed of the refrigerating fan can be increased, and the temperature raising efficiency of the refrigerating area is synchronously raised while the temperature lowering efficiency of the temperature control compartment is raised.

According to some embodiments of the invention, a temperature sensor is arranged in the refrigerating evaporator air duct, the temperature sensor is positioned in front of the refrigerating evaporator along the air supply direction of the refrigerating evaporator air duct, and the return air temperature control method further comprises:

acquiring the temperature of the airflow measured by the temperature sensor;

adjusting the heating power of the heating device according to the temperature of the air flow.

The temperature of the air flow measured by the temperature sensor is obtained, and the heating power of the heating device is adjusted according to the air flow temperature, so that the temperature compensation of the cold storage area is more accurate.

and controlling the driving device to drive the turntable to rotate according to the first temperature control request, and controlling the communication state of the air return opening of the temperature control chamber corresponding to the temperature control request.

The temperature control chamber is provided with an air supply outlet and an air return inlet, the temperature control chamber realizes the circulation with air outside the temperature control chamber through the air supply outlet and the air return inlet, the air outside the temperature control chamber can enter the temperature control chamber from the air supply outlet and flow out from the air return inlet, and in the process, the heat exchange between the inside and the outside of the temperature control chamber can be realized through the flow of the air; and controlling the driving device to drive the turntable to rotate according to the first temperature control request, controlling the communication state of the air return opening of the temperature control chamber corresponding to the temperature control request, and forming a channel for air circulation between the air supply opening and the air return opening of the corresponding temperature control chamber, thereby realizing the temperature regulation of the temperature control chamber.

By controlling the rotation angle of the turntable, the communication port on the turntable can be communicated with the air return port of the temperature control chamber, and the communication port on the turntable can also be staggered with the air return port of the temperature control chamber, so that the air return port is closed.

The communicating port on the control turntable can be controlled to be communicated with the air return ports of the temperature control rooms with required temperature control, so that the communicating state of the air return ports of the temperature control rooms can be controlled through the turntable, and the temperature of the temperature control rooms can be controlled.

According to some embodiments of the present invention, the controlling the driving device to drive the turntable to rotate according to the temperature control request to control the communication state of the air return opening of the temperature control compartment corresponding to the temperature control request includes at least one of:

controlling a communication port of the turntable to rotate from a first communication position to a second communication position according to a temperature control request;

controlling a communication port of the turntable to rotate from a first communication position to a first closing position according to a temperature control request;

controlling a communication port of the turntable to rotate from a first closed position to a first communication position according to a temperature control request;

and controlling the communication port of the turntable to be kept at a first communication position according to the temperature control request, and controlling the communication port of the turntable to leave the first communication position after a first set condition is reached.

The communication ports in different positions are controlled to rotate or keep the positions through the embodiment, so that the communication state of the communication ports and the air return opening is changed, and the different temperature control requirements of a plurality of temperature control compartments can be met.

Further, the first setting condition includes at least one of:

the temperature of the first temperature control chamber reaches a first target temperature;

the communication port of the dial is maintained at a first communication position for a first duration.

According to some embodiments of the invention, the obtaining a first temperature control request for controlling the temperature of the temperature-controlled compartment comprises: acquiring more than two temperature control requests; judging the priority of the more than two temperature control requests, and determining the temperature control request with the highest priority as a first temperature control request.

If more than two temperature control requests are obtained, the temperature control requests corresponding to the temperature control rooms with the highest priority levels can be confirmed as first temperature control requests, the driving device is controlled to drive the rotary disc to rotate according to the first temperature control requests, the communication ports are communicated with the air return ports of the temperature control rooms corresponding to the first temperature control requests, and therefore the temperature control requests can be sequentially met.

According to some embodiments of the invention, the determining the temperature control request with the highest priority level as the first temperature control request comprises one of:

and designating the temperature control request corresponding to the temperature control room with the high priority level as a first temperature control request.

If a plurality of temperature control requests occur and at least one temperature control request corresponding to a temperature control room with a high assigned priority level exists, in order to ensure the freshness of food in the temperature control room, the temperature control request corresponding to the temperature control room with the high assigned priority level is determined as a first temperature control request, and the driving device is controlled to drive the turntable to rotate according to the first temperature control request, so that the communication port is communicated with the return air port of the temperature control room corresponding to the first temperature control request, the temperature control requirement of the temperature control room with the high assigned priority level can be preferentially met, and the risk of food deterioration is reduced.

And determining a first temperature control request according to a temperature difference of a temperature control room corresponding to the temperature control request, wherein the temperature difference is a second difference value between the current temperature of the temperature control room and a preset temperature.

If a plurality of temperature control requests occur, the temperature control requests can be sequenced according to the temperature difference of the temperature control chamber corresponding to the temperature control requests, the temperature control request corresponding to the temperature control chamber with the larger temperature difference can be determined as a first temperature control request, and the driving device is controlled to drive the turntable to rotate according to the first temperature control request, so that the communication port is communicated with the return air inlet of the temperature control chamber corresponding to the first temperature control request, and the temperature control requirements of the temperature control chambers with different temperature differences are met.

According to some embodiments of the invention, the determining the first temperature control request according to the temperature difference of the temperature control compartment corresponding to the temperature control request comprises: and the temperature control request corresponding to the temperature control compartment with the second difference value larger than the third threshold value is the first temperature control request.

If a plurality of temperature control requests occur, and at least one temperature control request corresponding to the temperature control room with the temperature difference larger than the third threshold exists, the difference between the food in the temperature control room with the temperature difference larger than the third threshold and the effective fresh-keeping temperature is large, and the risk of food deterioration is easy to occur, the temperature control request corresponding to the temperature control room with the temperature difference larger than the third threshold can be determined as the first temperature control request, so that the temperature control requirement of the temperature control room with the temperature difference larger than the threshold can be preferentially met, and the risk of food deterioration is reduced.

According to some embodiments of the invention, the controlling the driving device to drive the turntable to rotate comprises:

and controlling the turntable to rotate clockwise or anticlockwise according to the distance parameter, wherein the distance parameter is the distance value between the communication port and the air return port of the temperature control compartment needing temperature control.

The rotating path with a smaller distance value between the communication port and the air return port of the temperature control chamber needing temperature control can be selected, and the rotating disc is controlled to rotate clockwise or anticlockwise according to the selected rotating path, so that when the communication port rotates towards the air inlet of the temperature control chamber corresponding to the temperature control request, the number of the air return ports of the temperature control chamber corresponding to the non-temperature control request is as small as possible, and the influence degree on the temperature in the temperature control chambers of other non-temperature control requests is reduced.

According to some embodiments of the invention, the communication area of the communication port to the air return port is adjusted by adjusting a rotation angle of the rotary disc. Through reducing or increasing the area of intercommunication mouth and return-air inlet, can adjust the flow velocity of the indoor air of control by temperature change to the temperature variation speed of adjustment control by temperature change room can carry out accurate temperature control to the control by temperature change room.

In a third aspect, an embodiment of the present invention provides an operation control device, where when the operation control device is applied to a refrigerator, a first temperature control request for controlling a temperature of a temperature control compartment may be obtained, and the temperature of an airflow entering a cooling area may be increased by controlling start and stop of a heating device. According to the embodiment of the invention, by starting the heating device, when the temperature control chamber is cooled, the temperature of the airflow entering the cold storage area is increased by the heating device, and the temperature of the cold storage area is not too low even if the temperature reduction amplitude of the temperature control chamber is large, so that the temperature change range of the temperature control chamber can be effectively expanded, the wide temperature adjustment of the temperature control chamber is realized, and different storage requirements are met.

In a fourth aspect, an embodiment of the present invention provides a refrigerator, including: the refrigeration evaporator comprises a refrigeration evaporator, a refrigeration area air inlet, a rotary table, a driving device for controlling the rotary table to rotate, at least two temperature control rooms, a refrigeration evaporator air channel and/or an operation control device, wherein the temperature control rooms comprise an air supply opening and an air return opening, the air supply opening and the refrigeration area air inlet are sequentially arranged along the air supply direction of the refrigeration evaporator air channel and are communicated with the refrigeration evaporator air channel, the refrigeration evaporator is arranged in the refrigeration evaporator air channel, the refrigeration evaporator is provided with a heating device, the refrigeration evaporator is positioned between the air return opening and the refrigeration area air inlet, the heating device is positioned between the air supply opening and the refrigeration area air inlet, the cold energy generated by the refrigeration evaporator enters the temperature control rooms through the air supply opening, and the rotary table is provided with a communication opening which can correspond to the air return opening, the air return opening is communicated with the refrigerating evaporator air duct through the communication opening; the operation control device can acquire a first temperature control request for controlling the temperature of the temperature control compartment, and can control the heating device to start and stop, so that the temperature of the airflow entering the cold storage area is increased. According to the embodiment of the invention, by starting the heating device, when the temperature control chamber is cooled, the temperature of the airflow entering the cold storage area is increased by the heating device, and the temperature of the cold storage area is not too low even if the temperature reduction amplitude of the temperature control chamber is large, so that the temperature change range of the temperature control chamber can be effectively expanded, the wide temperature adjustment of the temperature control chamber is realized, and different storage requirements are met.

In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores computer-executable instructions for executing the return air temperature control method according to the second aspect.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a refrigerator provided with a return air temperature control mechanism according to an embodiment of the present invention;

fig. 2 is a schematic view of a return air temperature control mechanism and an operation control device according to an embodiment of the present invention;

fig. 3 is a schematic view of a rotary plate of a return air temperature control mechanism according to an embodiment of the present invention;

fig. 4 is a schematic view of a temperature-controlled compartment of a return air temperature-controlling mechanism according to an embodiment of the present invention;

fig. 5 is a schematic view of a communication port of a return air temperature control mechanism in a first communication position according to another embodiment of the present invention;

fig. 6 is a schematic view of a communication port of a return air temperature control mechanism according to another embodiment of the present invention in a second communication position;

fig. 7 is a schematic view of a communication port of a return air temperature control mechanism according to another embodiment of the present invention in a first closed position;

fig. 8 is a schematic view of a temperature-controlled compartment of a return air temperature-controlling mechanism according to another embodiment of the present invention;

fig. 9 is a flowchart of a return air temperature control method according to an embodiment of the present invention;

fig. 10 is a flow chart of a return air temperature control method according to another embodiment of the present invention;

fig. 11 is a flow chart of a return air temperature control method according to another embodiment of the present invention;

fig. 12 is a flow chart of a return air temperature control method according to another embodiment of the present invention;

fig. 13 is a flow chart of a return air temperature control method according to another embodiment of the present invention;

fig. 14 is a flow chart of a return air temperature control method according to another embodiment of the present invention;

fig. 15 is a flow chart of a return air temperature control method according to another embodiment of the present invention;

fig. 16 is a flow chart of a return air temperature control method according to another embodiment of the present invention;

fig. 17 is a flow chart of a return air temperature control method according to another embodiment of the present invention;

fig. 18 is a flow chart of a return air temperature control method according to another embodiment of the present invention;

FIG. 19 is a schematic diagram of an operation control apparatus provided in accordance with an embodiment of the present invention;

fig. 20 is a schematic view of a refrigerator according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, at least two means are one or more, a plurality means are at least two, and greater than, less than, more than, etc. are understood as excluding the present numbers, and above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise specifically limited, terms such as set, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention by combining the specific contents of the technical solutions.

Based on this, the invention provides a return air temperature control mechanism, a return air temperature control method, an operation control device and a refrigerator, wherein the return air temperature control mechanism comprises: the refrigerating evaporator comprises a rotary table, a driving device for controlling the rotary table to rotate, at least two temperature control chambers and a refrigerating evaporator air duct, wherein each temperature control chamber comprises an air supply outlet and an air return inlet; the refrigeration evaporator is arranged in the air duct of the refrigeration evaporator, the refrigeration evaporator is provided with a heating device, the refrigeration evaporator is positioned between the air return opening and the air inlet of the refrigeration area, the heating device is positioned between the air supply opening and the air inlet of the refrigeration area, and the cold energy generated by the refrigeration evaporator enters the temperature control compartment through the air supply opening; the turntable is provided with a communication port which can correspond to the air return port, and the air return port is communicated with the air channel of the refrigeration evaporator through the communication port. Because return air inlet, supply-air outlet and cold-storage district air intake set gradually along the air supply direction in cold-storage evaporimeter wind channel, through set up heating device on cold-storage evaporimeter to heating device is located between supply-air outlet and the cold-storage district air intake, consequently when the cooling of temperature control room, heating device will get into the air current temperature improvement in cold-storage district, can make the cooling range in cold-storage district be less than the temperature control room, and can not influence the normal cooling of temperature control room. Therefore, even if the temperature reduction range of the temperature control chamber is large, the temperature of the cold storage area cannot be too low, the temperature change range of the temperature control chamber can be effectively expanded, wide temperature adjustment of the temperature control chamber is realized, and different storage requirements are met.

The embodiments of the present invention will be further explained with reference to the drawings.

The return air temperature control mechanism provided by an embodiment of the invention is applied to a refrigerator shown in fig. 1, the refrigerator comprises a refrigerating chamber 110 and a freezing chamber 120, the refrigerating chamber 110 comprises a refrigerating area 111, a refrigerating evaporator air duct, a refrigerating fan 112, a refrigerating evaporator 113, at least two temperature control rooms 114, a driving device 115 and a turntable 116, the refrigerating area 111 comprises a refrigerating area air inlet 1110, the refrigerating fan 112 and the refrigerating evaporator 113 are arranged in the refrigerating evaporator air duct, the temperature control rooms 114 are arranged in the refrigerating area 111 and comprise an air supply outlet 117 and an air return outlet 118, the temperature control rooms 114 are communicated with the refrigerating evaporator air duct through the air supply outlet 117 and the air return outlet 118, the turntable 116 is arranged between the air return outlet 118 and the refrigerating evaporator air duct, the driving device 115 is connected with the turntable 116, the refrigerating area 111 is communicated with the refrigerating evaporator air duct through the refrigerating area air inlet 1110, the air return outlet 118, the air supply outlet 117 and the refrigerating area air inlet are sequentially arranged along the air supply direction of the refrigerating evaporator air supply, the refrigerating evaporator 113 is provided with a heating device 119, the refrigerating evaporator 113 is positioned between the air return opening 118 and the refrigerating area air inlet 1110, the heating device 119 is positioned between the air supply opening 117 and the refrigerating area air inlet 1110, and cold energy generated by the refrigerating evaporator 113 enters the temperature control compartment 114 through the air supply opening 117. The freezing chamber 120 includes a freezing zone 121, a freezing fan 122, a freezing evaporator 123, a freezing evaporator air duct, and the freezing evaporator 123 and the freezing fan 122 are disposed in the freezing evaporator air duct. The cold energy generated by the refrigeration evaporator 113 enters the temperature-controlled compartment 114 through the air supply opening 117, the lower half portion of the refrigeration evaporator 113 may face the air supply opening 117, and it can be understood that the temperature of the air flow entering the air supply opening 117 is only reduced through the refrigeration evaporator 113. Under the drive of the refrigeration fan 112, the air flow enters the temperature control room 114 after being cooled by the refrigeration evaporator 113, so as to achieve the cooling effect of the temperature control room 114, and the cooled air flow enters the cooling area air inlet 1110 after being heated by the heating device 119, so that the cooling amplitude of the cooling area 111 is smaller than that of the temperature control room 114, and the normal cooling of the temperature control room 114 cannot be influenced.

Referring to fig. 2-3, the return air temperature control mechanism according to the embodiment of the present invention includes a turntable 116, a driving device 115 for controlling the turntable 116 to rotate, and at least two temperature control compartments, where the temperature control compartment 114 includes an air supply opening 117 and an air return opening 118, the turntable 116 is provided with a communication opening 310 capable of corresponding to the air return opening 118, and the air return opening 118 is communicated with the refrigeration evaporator air duct through the communication opening 310.

It should be noted that the return air temperature control mechanism is not limited to be applied to the refrigerating chamber of the refrigerator, and may also be applied to the freezing chamber or other chambers of the refrigerator.

The heating device 119 may be one or a combination of a plurality of heating wires, heating tubes, or heating plates, and it can be understood that the heating device 119 may select a quartz tube electric heating element, a steel electric heating element, an aluminum electric heating element, a teflon electric heating element, a titanium electric heating element, etc. according to different materials; the straight electric heating element, the U-shaped electric heating element, the L-shaped electric heating element, the W-shaped electric heating element, the fin electric heating element, the special-shaped electric heating element and the like can be selected according to different shapes, and a resistance heating element and a radiation electric heating element can be selected according to different heating modes; according to different setting positions, different volumes and powers are required to be met, and the heating device can be set into a heating wire, a heating tube or a heating plate and the like.

For example, the heating device 119 may be disposed at the upper half portion of the refrigeration evaporator 112, and the lower half portion of the refrigeration evaporator 112 is close to the air blowing opening 117, the air entering the air blowing opening 117 may be cooled by the refrigeration evaporator 112, the air cooled by the refrigeration evaporator 112 enters the temperature-controlled compartment 114 through the air blowing opening 117, and if the processing volume of the refrigeration evaporator 112 for the air entering the air blowing opening 117 is larger, the cooling efficiency of the temperature-controlled compartment 114 is higher.

Because the heating device 119 is disposed at the upper half portion of the refrigeration evaporator 112, the heating device 119 does not affect the temperature reduction of the temperature-controlled compartment 114 during operation according to the air blowing direction of the air duct of the refrigeration evaporator 112, and the air passes through the heating device 119 before entering the cold storage region 111, and the temperature is raised by the heating device 119. For example, the heating device 119 may be disposed on the top of the refrigerating evaporator 112, or may be disposed on a sidewall of the refrigerating evaporator 112. In one embodiment, the heating device 119 is disposed on a first sidewall of the refrigeration evaporator 112 away from the air blowing opening 117, on one hand, the heating device 119 can avoid reducing the cooling efficiency of the temperature control compartment 114 due to the influence of the heating device 119 on the temperature of the air flow entering the air blowing opening 117; on the other hand, the range of action of the heating device 119 on the refrigerating evaporator 112 can be increased, and the effect of preventing the refrigerating evaporator 112 from frosting can be improved.

Because the air return opening 118, the air supply opening 117 and the cooling area air inlet 1110 are sequentially arranged along the air supply direction of the refrigerating evaporator air duct, and the heating device 119 is arranged on the refrigerating evaporator 112, and the heating device 119 is positioned between the air supply opening 117 and the cooling area air inlet 1110, when the temperature control room 114 is cooled, the temperature of the air flow entering the cooling area 111 is increased by the heating device 119, so that the cooling amplitude of the cooling area 111 is smaller than that of the temperature control room 114, and the normal cooling of the temperature control room 114 is not influenced. Therefore, even if the temperature reduction range of the temperature control compartment 114 is large, the temperature of the cooling area 111 will not be too low, the temperature variation range of the temperature control compartment 114 can be effectively expanded, wide temperature adjustment of the temperature control compartment 114 is realized, and different storage requirements are met.

In addition, by providing the heating device 119 on the refrigeration evaporator 112, when the heating device 119 is activated, the frost formation of the refrigeration evaporator 112 can be reduced, and the cooling effect of the refrigeration evaporator 112 can be ensured.

Further, in order to make the temperature compensation of the heating device 119 to the cooling area 111 more accurate, in one embodiment, a temperature sensor is disposed in the cooling evaporator air duct, and the temperature sensor is located in front of the cooling evaporator along the air supply direction of the cooling evaporator air duct. By providing the temperature sensor, the temperature of the air flowing into the air inlet 1110 of the cooling area can be monitored, which is convenient for adjusting the heating power of the heating device 119, so that the temperature compensation of the cooling area 111 is more accurate.

Because the temperature-control compartment 114 is provided with the air supply opening 117 and the air return opening 118, the temperature-control compartment 114 realizes the circulation with the air outside the temperature-control compartment 114 through the air supply opening 117 and the air return opening 118, the air outside the temperature-control compartment 114 can enter the temperature-control compartment 114 from the air supply opening 117 and flow out from the air return opening 118, and in the process, the heat exchange between the inside and the outside of the temperature-control compartment 114 can be realized through the flow of the air, therefore, the temperature of the temperature-control compartment 114 can be adjusted by controlling the circulation state of the air flow channel, in the embodiment of the invention, the communication state of the air return openings 118 of more than two temperature-control compartments 114 is controlled by the communication opening 310 on the turntable 116, based on the communication state, the driving device 115 controls the turntable 116 to rotate according to the temperature control request, so that the communication opening 310 is communicated with the air return opening 118 of the temperature-control compartment 114 corresponding to the temperature control compartment 114, and a passage for the circulation of the air is formed between the air supply opening 117 and the air return opening 118 of the temperature-control compartment 114 corresponding to the temperature-control compartment 114, thereby achieving the adjustment of the temperature controlled compartment 114. Note that the temperature control request is used to control the temperature of the temperature control compartment 114.

Further, in the embodiment of the present invention, the communication port 310 on the control dial 116 is in communication with the air return port 118 of the temperature-controlled compartment 114, which needs to control the temperature, so as to control the temperature of the temperature-controlled compartment 114, and therefore, the shape or area of the communication port 310 is different from the size of the air return port 118, which does not cause the situation that the temperature of the temperature-controlled compartment 114 cannot be controlled. Based on this, the embodiment of the present invention does not limit the shape of the communication port 310, the communication port 310 may be in a fan shape, a square shape, a circular shape, or other irregular shapes, or the area of the communication port 310 is not limited, and the area of the communication port 310 may be larger than the air return opening 118 or smaller than the air return opening 118.

It should be noted that, if the communication port 310 and the air return opening 118 have the same shape, but the area of the communication port 310 is smaller than that of the air return opening 118, the air flowing out of the air return opening 118 is affected by the flux of the communication port 310, so as to reduce the temperature control efficiency of the temperature-controlled compartment 114, and therefore, in an embodiment of the present invention, the shape and the area of the communication port 310 and the air return opening 118 may be set to be the same, and when the communication port 310 and the air return opening 118 are controlled to be communicated, since the shape and the size of the communication port 310 and the air return opening 118 are the same and are matched to be communicated, the air flowing out through the air return opening 118 can flow out completely without affecting the air flowing out speed.

The number of the communication ports 310 provided on the turntable 116 may be one or more than two, and when the number of the communication ports 310 provided on the turntable 116 is one, the communication ports 310 can be controlled to be communicated with the air return openings 118 of the plurality of temperature control compartments 114 one by one, so as to realize temperature control of the plurality of temperature control compartments 114, in addition, more than two communication ports 310 may be provided, and the communication ports 310 are used for simultaneously controlling the communication state of the air return openings 118 of the more than two temperature control compartments 114, so as to realize temperature control of the plurality of temperature control compartments 114.

The connection between the driving device 115 and the turntable 116 includes:

in the first aspect, the driving device 115 is provided with a rotating shaft, the rotating shaft can be connected with the center of the turntable 116, and the turntable 116 can be driven to rotate by the rotation of the rotating shaft, so that the control of the turntable 116 is realized.

In a second aspect, the driving device 115 is provided with a rotating wheel, and the rotating wheel is connected with the edge of the rotating disc 116, and the edge motion can be controlled through the rotation of the rotating wheel, so as to drive the rotating disc 116 to rotate.

The connection between the driving device 115 and the turntable 116 is not limited to the above connection, and may be another connection. The drive 115 may be a servo motor, stepper motor, or other rotating device.

Further, the projection of the continuous return air opening 118 in the direction of the turntable 116 overlaps with the rotation path of the communication opening 310. When the turntable 116 rotates, a rotating path can be formed in the rotating process of the communication port 310, and since the projection of the center of the air return port 118 to the direction of the turntable 116 is overlapped with the rotating path of the communication port 310, the projection of the communication port 310 and the air return port 118 to the direction of the turntable 116 can be at least partially overlapped by controlling the rotation of the turntable 116, so that the communication port 310 is communicated with the air return port 118 of the temperature control chamber, and the communication state of the air return port 118 is controlled.

The rotation path is a region formed during the rotation of the communication port 310 about the rotation axis of the turntable 116, that is, the rotation path of the communication port 310 may be a set of arbitrary positions during the rotation of the communication port 310 about the rotation axis of the turntable 116.

For example, the communication port 310 may be a circular hole, and a circular rotation path may be formed when the communication port 310 rotates once in one direction around the rotation axis of the turntable 116. For example, the communication port 310 may be a circular hole, and when the communication port 310 is rotated by a predetermined angle in one direction around the rotational axis of the turntable 116, an arc-shaped rotation path having semicircular ends can be formed. Another example is: the communication port 310 may be a rectangular hole, and a circular rotation path can be formed when the communication port 310 rotates once in one direction around the rotation axis of the turntable 116. For example, the communication port 310 may be a rectangular hole, and when the communication port 310 is rotated by a predetermined angle in one direction around the rotational axis of the turntable 116, an arc-shaped rotational path having both ends at right angles can be formed.

It should be noted that, overlapping means that the two parts or reference patterns are identical in position and shape in space, and overlapping means that at least a part of the intersection exists between the two parts or reference patterns.

In an embodiment, the communication port 310 and the return air port 118 are circular holes with the same size, the communication port 310 rotates to form a rotation path, and since the projection of the return air port 118 to the direction of the turntable 116 overlaps with the rotation path of the communication port 310, a state exists, so that the center of the communication port 310 can coincide with the projection of the center of the return air port 118 to the direction of the turntable 116, at this time, the return air port 118 and the communication port 310 can completely correspond to each other, and the communication port 310 is communicated with the return air port 118 of the temperature-control compartment, so that the temperatures of the temperature-control compartments 114 can be better controlled.

Further, by controlling the rotation angle of the turntable 116, the communication port 310 on the turntable 116 can be communicated with the air return port 118 of the temperature-controlled compartment 114 corresponding to the temperature control request, or the communication port 310 on the turntable 116 can be dislocated from the air return port 118 of the temperature-controlled compartment 114, so that the air return port 118 closes the communication state of the communication port 310 on the controllable turntable 116 and the air return port 118 of the temperature-controlled compartment 114 requiring temperature control, and therefore, the communication state of the air return ports 118 of the plurality of temperature-controlled compartments 114 can be controlled through the turntable 116, and the temperature of the plurality of temperature-controlled compartments 114 can be controlled.

Further, after the air return opening 118 is closed, the air subsequently entering the temperature-controlled compartment 114 through the air supply opening 117 cannot flow out from the closed air return opening 118, so that the air pressure in the temperature-controlled compartment 114 is higher than the air pressure outside the air return opening 118, and therefore, under the action of the air pressure difference between the air pressure and the air pressure, after the communication opening 310 of the driving device 115 controls the turntable 116 to be communicated with the air return opening 118 and before the air pressure of the air return opening and the air pressure of the air return opening are balanced, the air in the temperature-controlled compartment 114 can quickly flow out from the air return opening 118. Therefore, compared with the conventional method of controlling the temperature of the temperature-controlled compartment 114 through a plurality of air supply dampers, the temperature regulation of the temperature-controlled compartment 114 is more efficient by controlling the opening and closing of the air return opening 118 through the turntable 116 in the present embodiment.

In addition, the turntable 116 is arranged close to the air duct of the refrigeration evaporator, the communication or the sealing between the return air inlet 118 and the air duct of the refrigeration evaporator can be controlled through the turntable 116, the temperature of the temperature control compartment 114 can be directly controlled by utilizing the air pressure of the air duct of the refrigeration evaporator, and other air supply parts are not required to be added, so that the cost is reduced.

Referring to fig. 2, the return air temperature control mechanism of the above embodiment may cooperate with an operation control device to implement the temperature control operation on the temperature-controlled compartment 114, wherein the operation control device includes a control processor 210 and a memory 220, the control processor 210 and the memory 220 may be connected by a bus, the control processor 210 is electrically connected to the driving device 115 in the return air temperature control mechanism, and the control processor 210 may invoke a return air temperature control program stored in the memory 220, so as to issue a temperature control instruction corresponding to the relevant temperature control request to the driving device 115.

Referring to fig. 4 to 6, the return air temperature control mechanism includes a first temperature-controlled compartment 410 and a second temperature-controlled compartment 420, the first temperature-controlled compartment 410 includes a first return air opening 411, the second temperature-controlled compartment 420 includes a second return air opening 421, and the driving device 115 controls the communication opening 310 of the turntable 116 to rotate to a second communication position according to a temperature control request, where the first communication position corresponds to the first return air opening 411 and the second communication position corresponds to the second return air opening 421.

If the second temperature-control compartment 420 needs temperature control, the driving device 115 may control the communication port 310 of the turntable 116 to rotate from the first communication position to the second communication position according to the temperature control request, so that the communication port 310 is communicated with the second air return opening 421, thereby implementing temperature control on the second temperature-control compartment 420, in this embodiment, the communication port 310 of the turntable 116 may be controlled to be sequentially communicated with the air return openings of two different temperature-control compartments 114, thereby implementing temperature control on the plurality of temperature-control compartments 114. The communication port 310 may be rotated from the first communication position to the second communication position, or rotated from the first closed position to the second communication position.

Wherein, the first communication position corresponds to the first air return opening 511; and one side of the plurality of temperature-controlled compartments constitutes a compartment outer wall, and the turntable 116 is disposed at one side of the compartment outer wall, and defines a position corresponding to a portion of the compartment outer wall excluding the return air inlet as a first closed position.

In practical applications, the rotating disc 116 may rotate frequently according to a temperature control request, and there is an error in mechanical rotation, where the error is accumulated continuously when there is an error in one rotation, and the error is increased and decreased due to the error, and the setting of the fixed closing position is equivalent to resetting the rotating disc 116, and the error can be cleared.

In another embodiment of the first closing position, the first closing position is a near position, the near position may be a position relatively close to the first communication position and any other two communication positions, and in practical applications, the position relatively close to the first communication position and any other two communication positions may be selected according to the first communication position of the communication port 310, and the communication port 310 may be controlled to rotate to the near position, so that the rotation distance of the driving device 115 may be reduced, and the service life of the driving device 115 may be prolonged.

Of course, one skilled in the art can randomly set the closed position of the communication port 310 of the dial 116. The return air opening 118 can be controlled to be closed by staggering the communication opening 310 and the return air opening 118.

It should be noted that a first setting condition may also be set, so that the communication port 310 may be maintained at the first communication position, and after the first setting condition is reached, the driving device controls the communication port 310 of the turntable 116 to rotate from the first communication position to the second communication position, thereby effectively solving the problem that the temperature control in one of the temperature control compartments 114 is not satisfied due to the too short time interval of the temperature control requirements of the two temperature control compartments 114.

In one embodiment, the first setting condition may be that the temperature of the first temperature-controlled compartment 410 reaches a first target temperature.

For example: when the temperature of the multiple temperature-control compartments 114 needs to be controlled, the communication port 310 can be maintained at the first communication position, after the temperature of the first temperature-control compartment 410 reaches the first target temperature, the driving device 115 controls the communication port 310 of the turntable 116 to rotate from the first communication position to the second communication position, and the communication port 310 can be maintained at the second communication position until the temperature of the second temperature-control compartment 420 reaches the second target temperature, that is, the driving device 115 can sequentially manage the temperatures of the multiple temperature-control compartments 114 according to the set conditions, so that the temperatures of the multiple temperature-control compartments 114 can be controlled.

In another embodiment, the first set condition is that the communication port 310 of the dial 116 is maintained in the first communication position for a first period of time.

For example: when there are multiple temperature control compartments 114 that need to be temperature controlled, the driving device 115 may control the communication port 310 of the turntable 116 to rotate to the first communication position according to the first temperature control request, the communication port 310 may be kept at the first communication position, and after the keeping time reaches the first duration, the driving device 115 controls the communication port 310 of the turntable 116 to rotate from the first communication position to the second communication position again, and the communication port 310 may be kept at the second communication position until the keeping time reaches the second duration. That is, the drive device 115 can sequentially control the temperatures of the plurality of temperature-controlled compartments 114 in accordance with the set conditions, thereby controlling the temperatures of the plurality of temperature-controlled compartments 114.

Referring to fig. 4, 5, and 7, the return air temperature control mechanism includes a first temperature control compartment 410, the first temperature control compartment 410 includes a first return air opening 411, the driving device 115 controls the communication opening 310 of the rotary disk 116 to rotate from the first communication position to the first closing position according to the temperature control request, so as to close all the return air openings on the return air temperature control mechanism, and the first communication position corresponds to the first return air opening 411, or controls the communication opening 310 of the rotary disk 116 to rotate from the first closing position to the first communication position according to the temperature control request, thereby controlling the temperatures of the multiple temperature control compartments.

For example, the temperature of the first temperature control compartment 410 reaches the preset temperature and the other temperature control compartments do not have temperature control requirements, the driving device 115 can control the communication port 310 of the turntable 116 to rotate from the first communication position to the first closing position, the blocking effect of the turntable 116 can close the return air inlet on the return air temperature control mechanism, the air in the temperature control compartment 114 can not flow out through the return air inlet, and therefore the temperature control compartment 114 can realize the heat preservation effect.

For another example, when the communication port 310 is located at the first closed position, the temperature of the first temperature-control compartment 410 needs to be controlled, and the driving device 115 may control the communication port 310 of the turntable 116 to rotate from the first closed position to the first communication position, so that the communication port 310 communicates with the first air return opening 411, and a passage through which air flows is formed between the air supply opening and the air return opening of the temperature-control compartment 114, thereby achieving temperature adjustment of the first temperature-control compartment 410.

For another example, when the communication port 310 is located at the first communication position, the driving device 115 may enable the communication port 310 to be maintained at the first communication position, and after the first setting condition is reached, the driving device 115 controls the communication port 310 of the turntable 116 to rotate from the first communication position to the first closed position again, and the return air opening of the return air temperature control mechanism may be closed by the blocking action of the turntable 116, so that the air in the temperature-controlled compartment 114 may not flow out through the return air opening, and the temperature-controlled compartment 114 may realize the heat preservation effect after the temperature requirement of the first temperature-controlled compartment 510 is satisfied.

Referring to fig. 8, in another embodiment of the return air temperature control mechanism of the present invention, the return air temperature control mechanism includes a rectangular temperature control compartment array formed by four temperature control compartments 114, a turntable 116 is disposed on one side of the temperature control compartment array, the turntable 116 is a disk covering return air inlets 118 of the four temperature control compartments 114, and an air supply outlet 117 of the temperature control compartment 114 is disposed on one side of the temperature control compartment array corresponding to the turntable 116 and avoids a coverage area of the disk.

For example: the disc is arranged on one side of the temperature control room array in a shape like a Chinese character tian, the projection of the disc can completely fall on one side of the temperature control room array, the position where the disc is arranged can cover the air return openings 118 of the four temperature control rooms 114, one side of the temperature control room array can be enabled to leave a certain area except the coverage area of the projection of the disc by the four temperature control rooms 114, the area can be provided with the air supply opening 117, the structural design can reduce the occupied space of an air return control mechanism, the air return openings 118 and the air supply opening 117 can be arranged on the same side of the temperature control room array, and when the air return temperature control mechanism is applied to a refrigerator, the air duct design can be simplified.

The embodiment of the invention provides a return air temperature control method, which is applied to an operation control device of a return air temperature control mechanism in the embodiment, wherein the return air temperature control mechanism is described in detail in the embodiment and is not described again. Referring to fig. 9, the return air temperature control method according to the embodiment of the present invention includes the following steps:

s910: acquiring a first temperature control request for controlling the temperature of a temperature control compartment;

when the temperature of the temperature-controlled compartment does not reach the target temperature, a first temperature-controlled request for controlling the temperature of the temperature-controlled compartment can be acquired, and according to the temperature control condition of the temperature-controlled compartment, the first temperature-controlled request may include: a cooling request, a heating request.

The temperature control chamber is a high-temperature chamber, and the temperature of the temperature chamber is lower than the target temperature, so that the first temperature control request is correspondingly a heating request;

the temperature control chamber is a low-temperature chamber, the temperature of the temperature control chamber is higher than the target temperature, and the first temperature control request corresponds to a refrigeration request.

S920: and controlling the heating device to start and stop according to the first temperature control request.

When the temperature control room carries out temperature control according to the first temperature control request, the heating device is started, and when the temperature control room is cooled, the temperature of airflow entering the cold storage area is increased by the heating device, so that the cooling amplitude of the cold storage area is smaller than that of the temperature control room, and the normal cooling of the temperature control room is not influenced. Therefore, even if the temperature reduction range of the temperature control chamber is large, the temperature of the cold storage area cannot be too low, the temperature change range of the temperature control chamber can be effectively expanded, wide temperature adjustment of the temperature control chamber is realized, and different storage requirements are met.

Generally, the heating device is activated in response to temperature control of the temperature-controlled compartment. In order to realize the refined control of the start of the heating device, referring to fig. 10, the controlling the start and stop of the heating device according to the first temperature control request in step S920 may include the following steps:

s1010: acquiring a first difference value between the target temperature of the temperature control compartment and the temperature of the refrigerating area;

the target temperature of the temperature control chamber is the temperature reached by the temperature control chamber after being cooled, and the temperature of the cold storage area can tend to be stable, for example, the temperature of the cold storage area is consistent with that of a common refrigerator, and the temperature of the cold storage area can be 4 ℃. The method comprises the steps of obtaining a first difference value between the target temperature of a temperature control room and the temperature of a refrigerating area, and aiming at judging whether the temperature reached by the temperature control room after being cooled is too large to be different from the temperature of the refrigerating area or not, and starting a heating device to adjust the temperature of air flow entering the refrigerating area if the difference is large.

S1020: comparing the first difference value with a preset first threshold value;

the first threshold may be preset according to a functional requirement when the refrigerator leaves a factory, or may be freely set by a user according to a use requirement.

Further, if the first difference is too large, the heating power of the heating device can be increased to ensure the temperature regulation effect of the cold storage area; or, if the first difference is too large, the rotating speed of the refrigerating fan can be increased, and the temperature raising efficiency of the refrigerating area is also synchronously raised while the temperature lowering efficiency of the temperature control compartment is raised.

S1030: when the first difference value exceeds a preset first threshold value, starting a heating device; and when the first difference value does not exceed a preset first threshold value, the heating device is closed.

Of course, in S1030, alternatively, the heating device may be turned on and turned off.

Whether the heating device is started or not can be controlled by adopting a first threshold judgment mode; it can be understood that, when the difference between the target temperature for cooling the temperature control chamber and the temperature of the refrigeration area is not large, the temperature of the refrigeration area is not greatly affected even if the temperature of the temperature control chamber is reduced, a heating device does not need to be started, and energy consumption is saved.

On the basis, a second threshold value can be preset, the first difference value is compared with the preset first threshold value, and the heating power of the heating device or the rotating speed of the fan of the refrigerator is adjusted according to the comparison result of the first difference value and the preset second threshold value. Specifically, when the first difference exceeds a preset second threshold, the heating power of the heating device can be increased to ensure the temperature regulation effect of the cold storage area; or when the first difference value exceeds a preset second threshold value, the rotating speed of the refrigerating fan can be increased, and the temperature raising efficiency of the refrigerating area is synchronously raised while the temperature lowering efficiency of the temperature control compartment is raised. Similarly, the second threshold may be preset according to the functional requirement when the refrigerator leaves the factory, or may be freely set by the user according to the use requirement. When the first difference exceeds a preset second threshold, the heating power of the heating device and the rotating speed of the refrigerating fan are increased, and the heating power and the rotating speed of the refrigerating fan can be simultaneously or alternatively executed.

In addition, in order to make the temperature compensation of the heating device to the cold storage area more accurate, referring to fig. 11, in an embodiment of the present invention, the return air temperature control method may further include:

s1110: acquiring the temperature of the airflow measured by a temperature sensor;

s1120: the heating power of the heating device is adjusted according to the temperature of the air flow.

Through obtaining the air current temperature that temperature sensor surveyed, can judge the height that gets into the air current temperature of cold-storage area air intake adjusts heating device's heating power according to air current temperature again, if the air current temperature that temperature sensor surveyed is low excessively, can improve heating device's heating power to make the temperature compensation to the cold-storage area more accurate.

Based on the turntable in the foregoing embodiment, referring to fig. 12, in an embodiment of the present invention, the return air temperature control method may further include:

s1210: and controlling the driving device to drive the turntable to rotate according to the first temperature control request, and controlling the communication state of the air return opening of the temperature control chamber corresponding to the temperature control request.

The temperature control chamber is provided with an air supply outlet and an air return inlet, the temperature control chamber realizes the circulation with the air outside the temperature control chamber through the air supply outlet and the air return inlet, the air outside the temperature control chamber can enter the temperature control chamber from the air supply outlet and flow out from the air return inlet, and in the process, the heat exchange between the inside and the outside of the temperature control chamber can be realized through the flow of the air; and controlling the driving device to drive the turntable to rotate according to the first temperature control request, controlling the communication state of the air return opening of the temperature control chamber corresponding to the temperature control request, and forming a channel for air circulation between the air supply opening and the air return opening of the corresponding temperature control chamber, thereby realizing the temperature regulation of the temperature control chamber.

It should be noted that, because the current position of the communication port may be determined according to the prior control, when different temperature control requests are obtained, the driving device needs to be controlled to drive the communication port of the turntable to rotate according to the current position of the communication port and the temperature control request, so as to control the communication state of the air return port of the temperature control compartment corresponding to the temperature control request. The step of controlling the driving device to drive the turntable to rotate according to the temperature control request and controlling the communication state of the return air inlet of the temperature control chamber corresponding to the temperature control request can comprise the following six aspects:

in a first aspect: and when the communication port is located at the first communication position, acquiring a temperature control request of the second temperature control chamber, confirming the temperature control request of the second temperature control chamber as the first temperature control request, and controlling the communication port of the turntable to rotate from the first communication position to the second communication position according to the first temperature control request.

In a second aspect: when the communication port is at the first communication position and the temperature control requirement of the first temperature control chamber is completed, the communication port of the turntable can be controlled to rotate from the first communication position to the first closing position,

in a third aspect: when all the air return openings are closed, a first temperature control request of the first temperature control chamber is obtained, the communication opening of the turntable can be controlled to rotate from the first closed position to the first communication position,

in the fourth aspect: when the communication port is at the first communication position, the temperature control request of the second temperature control chamber is obtained, or the communication port is kept at the first communication position, after the first set condition is reached, the communication port of the control turntable is controlled to rotate from the first communication position to the second communication position,

in a fifth aspect: when the communication port is located at the first communication position, the temperature control request of the second temperature control compartment is obtained, the communication port can also be kept at the first communication position, and after the first set condition is reached, the communication port of the control turntable is controlled to rotate to the second communication position from the first communication position and is kept at the second communication position until the second set condition is reached.

A sixth aspect: when the communication port is located at the first communication position, the communication port can be kept at the first communication position, and after a first set condition is reached, the communication port of the control turntable rotates from the first communication position to the first closing position.

In the return air temperature control method, the method for controlling the rotation of the communication port includes, but is not limited to, the above-mentioned hexagonal aspects, and other methods are also possible, and are not further described here.

Through the return air temperature control method, the communication ports can be controlled to rotate or keep positions at different positions, so that the communication state of the communication ports and the return air ports is changed, and the different temperature control requirements of a plurality of temperature control rooms can be met.

The first setting condition includes the following two aspects:

in a first aspect: the temperature of the first temperature-controlled compartment reaches a first target temperature. When the temperature control request of the second temperature control chamber is acquired, the driving device controls the communication port of the turntable to rotate to the second communication position, the situation that the first temperature control request is not met is possible, a first set condition can be set, the communication port is kept at the first communication position, after the temperature of the first temperature control chamber reaches a first target temperature, the communication port of the turntable is controlled to rotate to the second communication position from the first communication position, and the problem of the first temperature control request is effectively avoided.

In a second aspect: the communication port of the dial is maintained at the first communication position for a first period of time. When the temperature control request of the second temperature control chamber is acquired, the driving device controls the communication port of the turntable to rotate to the second communication position, the situation that the first temperature control request is not met is possible, a first set condition can be set, the communication port is kept at the first communication position, after the time reaches a first time length, the communication port of the turntable is controlled to rotate to the second communication position from the first communication position, and the problem of the first temperature control request is effectively avoided.

The first setting condition includes, but is not limited to, the above-described conditions in both aspects, and may be other conditions, which are not described here.

Another embodiment of the present application further provides a return air temperature control method, as shown in fig. 13, fig. 13 is a schematic diagram of an embodiment of a refinement procedure of step S910 in fig. 9, where step S910 includes, but is not limited to:

s1310: acquiring more than two temperature control requests;

more than two temperature control requests are acquired, and the temperature control requests can be acquired simultaneously or sequentially in the time dimension; the priorities may be the same or different in the priority dimension.

S1320: judging the priority of more than two temperature control requests, and determining the temperature control request with the highest priority as a first temperature control request.

The acquired more than two temperature control requests are judged according to the priority, the temperature control request with the highest priority can be determined as the first temperature control request, the driving device is controlled to drive the rotary table to rotate according to the first temperature control request, the communication state of the air return opening of the temperature control chamber corresponding to the temperature control request is controlled, an air circulation channel is formed between the air supply opening and the air return opening of the corresponding temperature control chamber, and therefore the temperature of the temperature control chamber is adjusted.

It should be noted that the determination of the priority may be based on the time sequence of obtaining the temperature control request, may be based on the distance between the communication port and the return air inlet of the temperature control compartment corresponding to the temperature control request, may be based on the priority of the temperature control compartment corresponding to the temperature control request, or may be based on the difference between the current temperature of the temperature control compartment and the target temperature. The determination of priority includes, but is not limited to, the above listed priority conditions, and other priority conditions may be used, which are not listed here.

Another embodiment of the present application further provides a return air temperature control method, as shown in fig. 14, fig. 14 is a schematic diagram of an embodiment of a refinement procedure of step S1320 in fig. 13, where step S1320 includes, but is not limited to:

s1400, the temperature control request corresponding to the temperature control room with the high priority level is designated as a first temperature control request.

If a plurality of temperature control requests exist and at least one temperature control request corresponding to a temperature control room with a high assigned priority level exists, in order to ensure the freshness of food in the temperature control room, the temperature control request corresponding to the temperature control room with the high assigned priority level is determined as a first temperature control request, and the driving device is controlled to drive the turntable to rotate according to the first temperature control request, so that the communication port is communicated with the return air port of the temperature control room corresponding to the first temperature control request, and the temperature control requirement of the temperature control room with the high assigned priority level can be met preferentially.

It should be noted that the priority level of the temperature control compartment may be a default setting or may be set by a user, and the present invention is not limited thereto.

In an embodiment, in the process of daily use, a customer can set the priority of a temperature control room for storing food according to the importance of the food or according to the characteristics of the food, for example, for dry food, the food needs to be stored at a stable low temperature, if the temperature change of the stored temperature control room is large, the food may absorb moisture and mildew, so that the temperature control requirement of the temperature control room for storing the food needs to be preferentially processed, the temperature control room for the food can be set as a high-priority temperature control room, therefore, when three temperature control requests are obtained simultaneously, the temperature control rooms corresponding to the three temperature control requests comprise one high-priority temperature control room, the temperature control request corresponding to the high-priority temperature control room can be designated as a first temperature control request, the driving device is controlled to drive the turntable to rotate, so that the communication port is communicated with the return air port of the temperature control room corresponding to the first temperature control request, a channel for air circulation is formed between the air supply outlet and the air return inlet of the temperature control chamber with high priority level, so that the temperature of the temperature control chamber can be preferentially adjusted, and the risk of moisture absorption and mildew of food is reduced.

In an embodiment, a customer can put food into a temperature control chamber with high priority according to the importance of the food storage or according to the characteristics of the food, for example, for ice cream, the food needs to be stored at a stable low temperature, if the temperature of the temperature control chamber is increased more, the food may be melted, so that the temperature control requirement of the temperature control chamber in which the food is stored needs to be preferentially processed, and the food can be put into a default or preset temperature control chamber with high priority, so when two temperature control requests are obtained at different times, the temperature control chamber corresponding to the subsequent temperature control request is the temperature control chamber with high priority, the temperature control request corresponding to the temperature control chamber with high priority can be designated as the first temperature control request, and the communication state of the communication port and the return air port of the temperature control chamber corresponding to the prior temperature control request does not need to be judged, the driving device can be controlled to drive the rotary disc to rotate, the communication port is communicated with the air return port of the temperature control chamber corresponding to the first temperature control request, a channel for air circulation is formed between the air supply port and the air return port of the temperature control chamber with the high priority level, the temperature of the temperature control chamber can be preferentially regulated, and the risk of food melting is reduced.

Another embodiment of the present application further provides a method for controlling temperature of return air, as shown in fig. 15, fig. 15 is a schematic diagram of an embodiment of a refinement procedure of step S1320 in fig. 13, where step S1320 includes, but is not limited to:

s1500, determining a first temperature control request according to a temperature difference of a temperature control chamber corresponding to the temperature control request, wherein the temperature difference is a second difference value between the current temperature of the temperature control chamber and the preset temperature.

In one embodiment, when two temperature control requests are acquired, the priority of the temperature control rooms corresponding to the two temperature control requests is the same, the second difference value between the current temperature and the preset temperature of the temperature control chamber corresponding to the subsequent temperature control request is larger than that of the temperature control chamber corresponding to the previous temperature control request, the temperature control request corresponding to the temperature control room with the larger second difference value between the current temperature and the preset temperature can be designated as the first temperature control request without judging the communication state of the communication port and the return air inlet of the temperature control room corresponding to the prior temperature control request, the driving device can be controlled to drive the rotary disc to rotate according to the first temperature control request, so that the communication port is communicated with the air return port of the temperature control chamber corresponding to the first temperature control request, and a channel for air circulation is formed between the air supply port and the air return port of the temperature control chamber with the high priority level, so that the temperature of the temperature control chamber can be preferentially regulated, and the risk of food deterioration is reduced.

In one embodiment, when the communication port is communicated with the second air return port of the second temperature control compartment, two temperature control requests are obtained, the priorities of the temperature control compartments corresponding to the two temperature control requests are the same, the difference between the current temperature and the preset temperature of the temperature control compartment corresponding to the subsequent temperature control request is greater than that of the temperature control compartment corresponding to the prior temperature control request, the temperature control request corresponding to the temperature control compartment with the greater difference between the current temperature and the preset temperature can be designated as the first temperature control request, after the temperature of the second temperature control compartment reaches the preset temperature, the driving device can be controlled to drive the rotary disc to rotate according to the first temperature control request, so that the communication port is communicated with the air return port of the temperature control compartment corresponding to the first temperature control request, a passage for air circulation is formed between the air supply port and the air return port of the temperature control compartment with the greater difference between the temperature and the preset temperature, and the preferential adjustment of the temperature control compartment temperature is realized, reducing the risk of food spoilage.

Another embodiment of the present application further provides a return air temperature control method, as shown in fig. 16, fig. 16 is a schematic diagram of an embodiment of a refinement procedure of step S1500 in fig. 15, where the step S1500 includes, but is not limited to:

s1600: the temperature control request corresponding to the temperature control compartment with the second difference value larger than the third threshold value is the first temperature control request.

If a plurality of temperature control requests occur and at least one temperature control request corresponding to the temperature control room with the second difference value larger than the third threshold exists, the difference between the food in the temperature control room with the second difference value larger than the third threshold and the effective fresh-keeping temperature is large, and the risk of food deterioration is easy to occur.

In one embodiment, when the communication port is communicated with the second air return port of the second temperature-control compartment, two temperature control requests are obtained, the priorities of the temperature-control compartments corresponding to the two temperature control requests are the same, the second difference between the current temperature of the temperature-control compartment corresponding to the subsequent temperature control request and the preset temperature is greater than a third threshold, the temperature control request corresponding to the temperature-control compartment with the greater second difference between the current temperature and the preset temperature can be designated as the first temperature control request, and the driving device can be directly controlled to drive the rotary disc to rotate according to the first temperature control request after the temperature of the second temperature-control compartment reaches the preset temperature, so that the communication port is communicated with the air return port of the temperature-control compartment corresponding to the first temperature control request, and an air circulation channel is formed between the air supply port and the air return port of the temperature-control compartment with the greater second difference between the temperature and the preset temperature, thereby realizing the preferential adjustment of the temperature-control compartments, the risk of food deterioration is reduced.

In one embodiment, when the communication port is communicated with the second air return port of the second temperature control compartment, the second temperature control compartment is a high-priority temperature control compartment, two temperature control requests are obtained, the priorities of the temperature control compartments corresponding to the two temperature control requests are the same, the second difference between the current temperature of the temperature control compartment corresponding to the subsequent temperature control request and the preset temperature is greater than a third threshold value, the temperature control request corresponding to the temperature control compartment with the greater second difference between the current temperature and the preset temperature can be designated as the first temperature control request, after the temperature of the second temperature control compartment reaches the preset temperature, the driving device can be controlled to drive the turntable to rotate according to the first temperature control request, so that the communication port is communicated with the air return port of the temperature control compartment corresponding to the first temperature control request, and an air circulation channel is formed between the air supply port and the air return port of the temperature control compartment with the greater second difference between the temperature and the preset temperature, the temperature of the temperature control chamber can be preferentially adjusted, and the risk of food deterioration is reduced.

Another embodiment of the present application further provides a method for controlling temperature of return air, as shown in fig. 17, fig. 17 is a schematic diagram of an embodiment of a refinement procedure of step S1320 in fig. 13, where step S1320 includes, but is not limited to:

and S1700, controlling the turntable to rotate clockwise or anticlockwise according to a distance parameter, wherein the distance parameter is a distance value between the communication port and a return air inlet of the temperature control chamber needing temperature control.

The turntable is provided with a communication port, in the process of controlling the communication port of the turntable to rotate according to the temperature control request, the return air inlet of the temperature control chamber corresponding to the non-temperature control request on the rotating path can be communicated passively, the communication time of the communication port and the return air inlet is short, and after the return air inlet is communicated passively for many times, part of air in the temperature control chamber can be conveyed out through the return air inlet, so that the temperature of the temperature control chamber corresponding to the passively communicated return air inlet is influenced. In order to solve the problems, the rotating path of the rotating disc can be confirmed according to the distance parameter, namely, the rotating path with a smaller distance value between the communication port and the air return port of the temperature control chamber needing temperature control is selected, and the rotating disc is controlled to rotate clockwise or anticlockwise according to the selected rotating path, so that when the communication port rotates towards the air inlet of the temperature control chamber corresponding to the temperature control request, the number of the air return ports of the temperature control chamber corresponding to the non-temperature control request is as small as possible, and the influence degree on the temperature in the temperature control chambers of other non-temperature control requests is reduced.

Another embodiment of the present application further provides a return air temperature control method, as shown in fig. 18, fig. 18 is a schematic diagram of an embodiment of a refinement procedure of step S1320 in fig. 13, where step S1320 includes, but is not limited to:

and S1800, adjusting the rotation angle of the turntable to adjust the communication area of the communication port to the return air inlet.

In the process that the communication port is communicated with the air return port, the driving device can adjust the rotating angle of the rotary disc according to the temperature control request to adjust the communication area of the communication port to the air return port, and the flow speed of the air in the temperature control chamber can be adjusted by reducing or increasing the communication area of the communication port and the air return port, so that the temperature change speed of the temperature control chamber is adjusted, and the temperature of the temperature control chamber can be accurately controlled.

Referring to fig. 19, fig. 19 is a schematic view of an operation control apparatus of a refrigerator according to an embodiment of the present invention. The operation control device according to the embodiment of the present invention is built in the refrigerator, and includes one or more control processors 210 and a memory 220, and fig. 19 illustrates one control processor 210 and one memory 220 as an example.

The control processor 210 and the memory 220 may be connected by a bus or other means, and the bus connection is exemplified in fig. 19.

The memory 220, which is a non-transitory computer readable storage medium, may be used to store non-transitory software programs as well as non-transitory computer executable programs. Further, the memory 220 may include high speed random access memory 220, and may also include non-transitory memory 220, such as at least one piece of disk memory 220, flash memory device, or other non-transitory solid state memory 220. In some embodiments, the memory 220 may optionally include memory 220 remotely located from the control processor 210, and these remote memories 220 may be connected to the operation control device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

Those skilled in the art will appreciate that the arrangement of the devices illustrated in fig. 19 is not intended to be limiting of the operational control devices, and may include more or fewer components than those illustrated, or some components may be combined, or a different arrangement of components.

The non-transitory software program and instructions required to implement the return air temperature control method applied to the operation control device in the above-described embodiment are stored in the memory 220, and when being executed by the control processor 210, the return air temperature control method applied to the operation control device in the above-described embodiment is executed, for example, the method steps S910 to S920 in fig. 9, the method steps S1010 to S1030 in fig. 10, the method steps S1110 to S1120 in fig. 11, the method step S1210 in fig. 12, the method steps S1320 in fig. 13, the method step S1400 in fig. 14, the method step S1500 in fig. 15, the method step S1600 in fig. 16, the method step S1700 in fig. 17, and the method step S1800 in fig. 18 described above are executed.

Since the refrigerator in this embodiment has the operation control device in any of the above embodiments, the refrigerator in this embodiment has the hardware structure of the operation control device in the above embodiments, and the control processor 210 in the operation control device can call the control program of the refrigerator stored in the memory 220 to control the return air temperature control mechanism.

The above-described embodiments of the apparatus are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may also be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

Referring to fig. 20, fig. 20 is a refrigerator according to an embodiment of the present invention, including an operation control device 2020 according to the above embodiment and a return air temperature control mechanism 2010 according to the above embodiment.

Can acquire the first control by temperature change request that is used for controlling the temperature of control by temperature change room through operation control device, can control drive arrangement control carousel according to first control by temperature change and rotate, make intercommunication mouth and the return air inlet of the control by temperature change room that corresponds with the control by temperature change request intercommunication, let form the passageway of circulation of air between the supply-air outlet and the return air inlet of the control by temperature change room that corresponds to the realization is to the regulation of control by temperature change room temperature. According to the embodiment of the invention, the opening and closing of the air return openings of the temperature control rooms are controlled by using the rotary table, so that the temperature control of the temperature control rooms can be met, the occupied space is effectively reduced, the cost is reduced, and the temperature control efficiency of the temperature control rooms can be improved.

It should be noted that the refrigerator may include the return air temperature control mechanism 2010 of the above embodiment or the operation control device 2020 of the above embodiment.

Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions that are executed by one or more control processors 210, for example, by one control processor 210 in fig. 19, and can cause the one or more control processors 210 to execute the return air temperature control method in the above-described method embodiment, for example, execute the above-described method steps S910 to S920 in fig. 9, the method steps S1010 to S1030 in fig. 10, the method steps S1110 to S1120 in fig. 11, the method step S1210 in fig. 12, the method steps S1310 to S1320 in fig. 13, the method step S1400 in fig. 14, the method step S1500 in fig. 15, the method step S1600 in fig. 16, the method step S1700 in fig. 17, and the method step S1800 in fig. 18.

One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.

Claims

1. A return air temperature control mechanism is applied to a refrigerator with a refrigeration evaporator and a cold storage area air inlet and is characterized by comprising a rotary table, a driving device for controlling the rotary table to rotate, at least two temperature control chambers and a refrigeration evaporator air channel, wherein each temperature control chamber comprises an air supply outlet and an air return inlet;

the turntable is provided with a communication port which can correspond to the air return port, and the air return port is communicated with the refrigeration evaporator air duct through the communication port;

the starting and stopping of the heating device are controlled by a first temperature control request, and the first temperature control request is used for controlling the temperature of the temperature control compartment.

2. A return air temperature control mechanism according to claim 1, characterized in that: the refrigeration evaporator comprises a first side wall far away from the air supply outlet, and the heating device is arranged on the first side wall.

3. A return air temperature control mechanism according to claim 1, characterized in that: a temperature sensor is arranged in the refrigerating evaporator air duct and is positioned in front of the refrigerating evaporator along the air supply direction of the refrigerating evaporator air duct.

4. A return air temperature control mechanism according to claim 1, characterized in that: and the projection of the air return opening to the direction of the turntable is overlapped with the rotating path of the communication opening.

5. A return air temperature control mechanism according to any one of claims 1 to 4, characterized in that: the driving device controls the rotary disc to rotate according to a temperature control request, so that the communication port is communicated with the air return port of the temperature control chamber corresponding to the temperature control request, and the temperature control request is used for controlling the temperature of the temperature control chamber.

6. A return air temperature control mechanism according to claim 5, characterized in that: the temperature control device comprises a first temperature control chamber and a second temperature control chamber, wherein the first temperature control chamber comprises a first air return opening, the second temperature control chamber comprises a second air return opening, the driving device controls a communication opening of the turntable to rotate to a second communication position according to a temperature control request, the first communication position corresponds to the first air return opening, and the second communication position corresponds to the second air return opening.

7. A return air temperature control mechanism according to claim 5, characterized in that: include by four control by temperature change room constitution field font control by temperature change room array, the carousel set up in one side of control by temperature change room array, the carousel is for covering four the disc of the return air inlet of control by temperature change room, the supply-air outlet of control by temperature change room set up in control by temperature change room array corresponds one side of carousel, and dodges the coverage of disc.

8. A return air temperature control method is applied to a refrigerator with a refrigeration evaporator and a cold storage area air inlet and is characterized in that the refrigerator comprises a rotary table, a driving device used for controlling the rotary table to rotate, at least two temperature control chambers and a refrigeration evaporator air duct, wherein each temperature control chamber comprises an air supply opening and an air return opening, the air return openings, the air supply openings and the cold storage area air inlet are sequentially arranged along the air supply direction of the refrigeration evaporator air duct and are communicated with the refrigeration evaporator air duct, the refrigeration evaporator is arranged in the refrigeration evaporator air duct, the refrigeration evaporator is provided with a heating device, the refrigeration evaporator is positioned between the air return openings and the cold storage area air inlet, the heating device is positioned between the air supply openings and the cold storage area air inlet, and the cold energy generated by the refrigeration evaporator enters the temperature control chambers through the air supply openings, the turntable is provided with a communication port which can correspond to the air return port, the air return port is communicated with the air channel of the refrigeration evaporator through the communication port, and the return air temperature control method comprises the following steps:

9. The return air temperature control method according to claim 8, wherein the controlling the heating device to start and stop according to the first temperature control request comprises:

10. A return air temperature control method according to claim 9, further comprising:

11. The return air temperature control method according to claim 8, wherein a temperature sensor is disposed in the refrigeration evaporator air duct, the temperature sensor being located in front of the refrigeration evaporator in the air supply direction of the refrigeration evaporator air duct, the return air temperature control method further comprising:

acquiring the temperature of the airflow measured by the temperature sensor;

12. A return air temperature control method according to any one of claims 8 to 11, further comprising:

and controlling the driving device to drive the turntable to rotate according to the first temperature control request, and controlling the communication state of the air return opening of the temperature control compartment corresponding to the temperature control request.

13. The return air temperature control method according to claim 12, wherein the refrigerator comprises a first temperature control chamber and a second temperature control chamber, the first temperature control chamber comprises a first return air inlet, the second temperature control chamber comprises a second return air inlet, the driving device is controlled to drive the turntable to rotate according to the temperature control request, and the communication state of the return air inlet of the temperature control chamber corresponding to the temperature control request is controlled, and the method comprises at least one of the following steps:

and controlling the communication port of the turntable to be kept at a first communication position according to the temperature control request, and controlling the communication port of the turntable to leave the first communication position to rotate after a first set condition is reached.

14. The return air temperature control method according to claim 13, wherein the first set condition includes at least one of:

15. The return air temperature control method according to claim 8, wherein the acquiring of the first temperature control request for controlling the temperature of the temperature-controlled compartment includes:

acquiring more than two temperature control requests;

judging the priority of the more than two temperature control requests, and determining the temperature control request with the highest priority as a first temperature control request.

16. The return air temperature control method according to claim 15, wherein the temperature control request with the highest priority level is determined as the first temperature control request, and the determination includes one of the following steps:

appointing a temperature control request corresponding to a temperature control room with a high priority level as a first temperature control request;

17. The return air temperature control method according to claim 16, wherein the determining of the first temperature control request according to the temperature difference of the temperature control compartment corresponding to the temperature control request comprises:

the temperature control request corresponding to the temperature control compartment with the second difference value larger than the third threshold value is the first temperature control request.

18. An operation control device comprising at least one control processor and a memory for communicative connection with the at least one control processor; the memory stores instructions executable by the at least one control processor to enable the at least one control processor to perform a return air temperature control method as claimed in any one of claims 8 to 17.

19. A refrigerator comprising an operation control device as claimed in claim 18 and/or a return air temperature control mechanism as claimed in any one of claims 1 to 7.

20. A computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the return air temperature control method of any one of claims 8 to 17.