阅读说明：本技术 一种冷凝热回收系统、冰箱 (Condensation heat recovery system and refrigerator ) 是由 赵向辉 刘煜森 李靖 房雯雯 于 2019-01-11 设计创作，主要内容包括：本发明属于冰箱技术领域,公开一种冷凝热回收系统,该系统应用于冰箱,包括压缩机、冷凝器、节流装置和蒸发器,还包括切换连通装置、加热管和控制装置；切换连通装置的第一接口连接压缩机的排气口,第二接口连接加热管,加热管通过管道连接节流装置；第三接口连接冷凝器的进气端口；控制装置,用于根据运行指令,控制切换连通装置；当切换连通装置的第二接口与加热管连通时,运行热回收模式；当切换连通装置的第三接口与冷凝器连通时,运行制冷模式。通过设置切换连通装置和加热管,实现制冷系统中冷凝热的回收,实现加热功能,实现同一间室的冷热两用；同时,由于使用系统自身的冷凝热,升温过程耗电量小,更加节能。(The invention belongs to the technical field of refrigerators, and discloses a condensation heat recovery system which is applied to a refrigerator and comprises a compressor, a condenser, a throttling device, an evaporator, a switching communication device, a heating pipe and a control device; a first interface of the switching communication device is connected with an exhaust port of the compressor, a second interface of the switching communication device is connected with a heating pipe, and the heating pipe is connected with the throttling device through a pipeline; the third interface is connected with an air inlet port of the condenser; the control device is used for controlling the switching and communicating device according to the operation instruction; when the second interface of the switching communication device is communicated with the heating pipe, the heat recovery mode is operated; and when the third interface of the switching communication device is communicated with the condenser, the refrigeration mode is operated. By arranging the switching and communicating device and the heating pipe, the recovery of condensation heat in a refrigeration system is realized, the heating function is realized, and the cold and hot functions of the same chamber are realized; meanwhile, the power consumption in the heating process is low and the energy is saved due to the use of the condensation heat of the system.)

1. A condensation heat recovery system is applied to a refrigerator and comprises a compressor, a condenser, a throttling device and an evaporator, wherein the air outlet end of the evaporator is connected with an air suction port of the compressor;

a first interface of the switching communication device is connected with an exhaust port of the compressor, a second interface of the switching communication device is connected with a heating pipe, and the heating pipe is connected with the throttling device through a pipeline; the third interface is connected with an inlet of the condenser;

the control device is used for controlling the switching communication device according to an operation instruction;

when the second interface of the switching communication device is communicated with the heating pipe, the condensation heat recovery system starts a heat recovery mode;

and when the third interface of the switching communication device is communicated with the condenser, the condensation heat recovery system starts a refrigeration mode.

2. The condensation heat recovery system according to claim 1, wherein a return air duct between an outlet end of the evaporator and a suction port of the compressor exchanges heat with the throttling means.

3. The condensation heat recovery system according to claim 2, wherein the throttling means comprises a first capillary tube;

the liquid outlet port of the condenser and the liquid outlet port of the heating pipe are respectively connected with the first capillary tube through pipelines.

4. The condensation heat recovery system according to claim 2, wherein the throttling means comprises a second capillary tube and a third capillary tube;

the second capillary is connected between the liquid outlet port of the condenser and the evaporator;

the third capillary tube is connected between the liquid outlet port of the heating tube and the evaporator.

5. The condensation heat recovery system according to claim 2, wherein the control means comprises:

and the switching control unit is used for switching and controlling the switching communication device according to the operation instruction.

The handover control unit is specifically configured to,

when the operation instruction is a refrigeration mode operation instruction, controlling the first interface and the third interface of the switching communication device to be communicated;

and when the operation instruction is a heat recovery mode operation instruction, controlling the first interface and the second interface of the switching communication device to be communicated.

6. A refrigerator comprising a cabinet having one or more compartments therein, and further comprising the condensation heat recovery system of any one of claims 1 to 5;

at least one of the compartments is provided with the heating pipe.

7. The refrigerator of claim 6, wherein the heating duct is provided on a wall surface of the compartment.

8. The refrigerator as claimed in claim 6, wherein a supply air outlet and a return air inlet are further provided in the compartment in which the heating duct is provided.

9. The refrigerator according to claim 8, wherein the control device further comprises a damper control unit for controlling opening and closing of the damper of the supply port;

the control device is particularly intended for use in connection with,

when the operation instruction is a refrigeration mode operation instruction, the air door control unit controls the air door of the air supply outlet to be opened;

and when the operation instruction is a heat recovery mode operation instruction, the air door control unit controls the air door of the air supply outlet to be closed.

10. The refrigerator according to claim 9, wherein when the operation command is a cooling mode operation, the control device is further configured to control the damper control unit to close the damper of the supply port when the compartment temperature is lower than a set threshold.

Technical Field

The invention relates to the technical field of refrigerators, in particular to a condensation heat recovery system and a refrigerator.

Background

A refrigerator, as a container for keeping food or other articles in a constant low temperature state, has become one of household appliances essential for modern households. In order to meet the requirement of a user on food storage space, the refrigerator is additionally provided with a temperature-changing chamber on the basis of the original refrigerating chamber and the original freezing chamber, and the temperature-changing chamber can be used as the refrigerating chamber and the refrigerating chamber as required. The lower limit of the temperature regulation of the temperature changing chamber of the existing refrigerator is about-20 ℃ and the upper limit is about 5 ℃, the refrigerator has the functions of freezing and refrigerating, but does not have the function of heating, and cannot meet the diversified requirements of users. The common electric heating technology has large power consumption and does not meet the energy-saving requirement of the refrigerator.

Disclosure of Invention

The embodiment of the invention provides a condensation heat recovery system and a refrigerator, and aims to solve the problems that a temperature-changing chamber is heated by electric heating, the power consumption is large, and energy is not saved. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.

According to a first aspect of embodiments of the present invention, there is provided a condensation heat recovery system.

In some optional embodiments, the system is applied to a refrigerator and comprises a compressor, a condenser, a throttling device and an evaporator, wherein the air outlet end of the evaporator is connected with the air suction port of the compressor; a first interface of the switching communication device is connected with an exhaust port of the compressor, a second interface of the switching communication device is connected with a heating pipe, and the heating pipe is connected with the throttling device through a pipeline; the third interface is connected with a first liquid inlet port of the condenser; the control device is used for controlling the switching communication device according to an operation instruction;

when the second interface of the switching communication device is communicated with the heating pipe, the condensation heat recovery system starts a heat recovery mode; and when the third interface of the switching communication device is communicated with the condenser, the condensation heat recovery system starts a refrigeration mode.

In some optional embodiments, a return air pipe between the air outlet end of the evaporator and the air suction port of the compressor exchanges heat with the throttling device.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the throttling device is arranged to exchange heat with the air return pipeline, so that the condensation heat in a common refrigeration system is recovered, the heating function is realized, and the cold and hot functions of the same chamber are realized; meanwhile, the power consumption in the heating process is low and the energy is saved due to the use of the condensation heat of the system.

In some alternative embodiments, the throttling device comprises a first capillary tube; the liquid outlet port of the condenser and the liquid outlet port of the heating pipe are respectively connected with the first capillary tube through pipelines.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the heat exchange is carried out by arranging the capillary tube and the air return pipeline, so that the recovery of condensation heat in a common refrigeration system is realized, the heating function is realized, and the cold and hot functions of the same chamber are realized; meanwhile, the power consumption in the heating process is low and the energy is saved due to the use of the condensation heat of the system.

In some alternative embodiments, the throttling device comprises a second capillary tube and a third capillary tube; the second capillary is connected between the liquid outlet port of the condenser and the evaporator; the third capillary tube is connected between the liquid outlet port of the heating tube and the evaporator.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the condenser and the heating pipe are respectively connected with different throttling devices, so that when the condenser heats, the heating pipe is communicated with the evaporator through the third capillary tube, and the refrigerant in the heating pipe can migrate to the evaporator; in a similar way, when the heating pipe heats, the refrigerant in the condenser migrates to the evaporator through the second capillary tube, so that the efficient and reliable work of the system is ensured. The heat exchange is carried out through the capillary tube and the air return pipeline, so that the recovery of condensation heat in a common refrigeration system is realized, the heating function is realized, and the cold and hot functions of the same chamber are realized; meanwhile, the power consumption in the heating process is low and the energy is saved due to the use of the condensation heat of the system.

In some optional embodiments, the control device comprises:

and the switching control unit is used for switching and controlling the switching communication device according to the operation instruction.

The switching control unit is specifically configured to control the first interface and the third interface of the switching communication device to communicate with each other when the operation instruction is a cooling mode operation instruction;

and when the operation instruction is a heat recovery mode operation instruction, controlling the first interface and the second interface of the switching communication device to be communicated.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: through the control device, the switching control unit controls the switching communication device according to the operation instruction, so that the heating pipe is controlled to be heated or disconnected, and the wide temperature zone change of temperature rise is realized. The scheme realizes the recovery of condensation heat in a common refrigeration system, realizes the heating function and realizes the cold and hot dual-purpose of the same chamber; meanwhile, the power consumption in the heating process is low and the energy is saved due to the use of the condensation heat of the system.

According to a second aspect of embodiments of the present invention, there is provided a refrigerator.

In some optional embodiments, the refrigerator comprises a refrigerator body, one or more compartments are arranged in the refrigerator body, and the refrigerator also comprises the condensation heat recovery system;

the heating pipe is arranged in the at least one chamber;

and an air supply outlet and an air return inlet are also arranged in the chamber provided with the heating pipe.

In some alternative embodiments, the heating tube is disposed on a wall surface of the compartment.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the heating pipe is arranged on the wall surface of the chamber, and the corresponding air supply outlet is arranged, so that the chamber has the characteristics of double functions of heating and refrigerating and wide temperature zone change. By arranging the condensation heat recovery system, the throttling device and the air return pipeline exchange heat, so that the condensation heat in a common refrigeration system is recovered, the heating function is realized, and the cold and hot functions of the same chamber of the refrigerator are realized; meanwhile, the refrigerator has low power consumption in the temperature rising process and saves more energy due to the use of the condensation heat of the system.

In some optional embodiments, the control device further comprises a damper control unit for controlling the opening and closing of the damper of the air supply outlet;

the control device is specifically used for controlling the air door of the air supply outlet to be opened by the air door control unit when the operation instruction is a refrigeration mode operation instruction;

and when the operation instruction is a heat recovery mode operation instruction, the air door control unit controls the air door of the air supply outlet to be closed.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: when the temperature-changing chamber needs to be refrigerated, the air door of the air supply opening is controlled to be in an open state, and air cooled by the evaporator enters the chamber through the air supply opening, so that the temperature is reduced. When the temperature-changing chamber needs to be heated, the air door of the air supply outlet is controlled to be in a closed state, the cold energy generated by the refrigerating system is used for cooling other chambers, and the high-temperature and high-pressure refrigerant is used for heating the chambers through the condensation heat released by the heating pipes, so that the heating function of the chambers is realized. By arranging the condensation heat recovery system, the throttling device and the air return pipeline exchange heat, so that the condensation heat in a common refrigeration system is recovered, the heating function is realized, and the cold and hot functions of the same chamber of the refrigerator are realized; meanwhile, the refrigerator has low power consumption in the temperature rising process and saves more energy due to the use of the condensation heat of the system.

In some optional embodiments, when the operation command is a cooling mode operation, the control device is further configured to control the damper control unit to close the air supply outlet damper when the compartment temperature is lower than a set threshold.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: according to the refrigerator provided by the scheme, the heat exchange is carried out between the throttling device and the air return pipeline by arranging the condensation heat recovery system, so that the condensation heat in a common refrigeration system is recovered, the heating function is realized, and the cold and hot purposes of the same chamber of the refrigerator are realized; meanwhile, the refrigerator has low power consumption in the temperature rising process and saves more energy due to the use of the condensation heat of the system. When the temperature-changing chamber is cooled to a set value, the air door of the air supply outlet of the chamber is closed, and the cooling of the chamber is stopped, so that the effects of energy conservation and consumption reduction are further achieved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic configuration diagram illustrating a condensation heat recovery system according to an exemplary embodiment.

Fig. 2 is a schematic structural view of a control device of a condensation heat recovery system according to an exemplary embodiment;

FIG. 3 illustrates a schematic diagram of a condensation heat recovery system according to another exemplary embodiment;

fig. 4 is a schematic structural diagram illustrating a control apparatus of a refrigerator according to an exemplary embodiment.

Detailed Description

The following description and the drawings sufficiently illustrate specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the embodiments herein includes the full ambit of the claims, as well as all available equivalents of the claims. The terms "first," "second," and the like, herein are used solely to distinguish one element from another without requiring or implying any actual such relationship or order between such elements. In practice, a first element can also be referred to as a second element, and vice versa. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such structure, apparatus, or device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a structure, device or apparatus that comprises the element. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like herein, as used herein, are defined as orientations or positional relationships based on the orientation or positional relationship shown in the drawings, and are used for convenience in describing and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. In the description herein, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, and indirect connections via intermediary media, where the specific meaning of the terms is understood by those skilled in the art as appropriate.

Herein, the term "plurality" means two or more, unless otherwise specified.

Herein, the character "/" indicates that the preceding and following objects are in an "or" relationship. For example, A/B represents: a or B.

Herein, the term "and/or" is an associative relationship describing objects, meaning that three relationships may exist. For example, a and/or B, represents: three relationships of A or B, or A and B

Fig. 1 is a schematic view showing a configuration of a condensation heat recovery system according to an exemplary embodiment fig. 2 is a schematic view showing a configuration of a control device of a condensation heat recovery system according to an exemplary embodiment.

As shown in fig. 1, the condensation heat recovery system provided by this embodiment, which is applied to a refrigerator, includes a compressor 10, a condenser 21, a throttling device, and an evaporator 41, wherein an air outlet end of the evaporator 41 is connected to an air suction port of the compressor 10, and further includes: a switching communication device 90, a first interface of the switching communication device 90 is connected with the exhaust port of the compressor 10, a second interface is connected with the air inlet port of the heating pipe 22, and the liquid outlet port of the heating pipe 22 is connected with the throttling device through a pipeline; the third interface is connected with an air inlet port of the condenser 21, and an outlet of the condenser 21 is connected with an inlet of the throttling device; a control device 100 for controlling the switching communication device according to an operation instruction;

when the second interface of the switching communication device 90 is communicated with the heating pipe 22, the condensation heat recovery system operates in a heat recovery mode;

when the third port of the switching communication device 90 communicates with the condenser 21, the condensation heat recovery system operates in a cooling mode.

Meanwhile, the return air pipe between the outlet of the evaporator 41 and the air inlet of the compressor 10 exchanges heat with the capillary 30.

Optionally, the throttling means comprises a first capillary tube 30; the liquid outlet of the condenser 21 and the second liquid outlet of the heating pipe 22 are connected to the first capillary 30 through pipes respectively.

Thus, by arranging the switching and communicating device 90 and the heating pipe 22, the condensation heat in the common refrigeration system is recovered, and the heating function is realized; meanwhile, the power consumption in the heating process is low and the energy is saved due to the use of the condensation heat of the system.

Alternatively, as shown in fig. 2, the control device 100 includes: a switching control unit 101 for switching and controlling the switching communication device 90 according to the operation instruction.

The switching control unit 101 is specifically configured to, when the operation instruction is a cooling mode operation instruction, control the first interface and the third interface of the switching communication device 90 to communicate with each other;

when the operation command is a heat recovery mode operation command, the first interface and the second interface of the switching communication device 90 are controlled to communicate with each other.

By adopting the above scheme, the switching control unit 101 controls the switching communication device 90 according to the operation instruction through the control device 100, so as to control the heating pipe 22 to be heated or disconnected, thereby realizing wide temperature zone change of temperature rise. The scheme realizes the recovery of condensation heat in a common refrigeration system, realizes the heating function and realizes the cold and hot dual-purpose of the same chamber; meanwhile, the power consumption in the heating process is low and the energy is saved due to the use of the condensation heat of the system.

Fig. 3 is a schematic configuration diagram illustrating a condensation heat recovery system according to another exemplary embodiment.

As shown in fig. 3, the condensation heat recovery system provided by this embodiment is applied to a refrigerator, and includes a compressor 10, a condenser 21, a capillary tube 31, a capillary tube 32, and an evaporator 41, where an air outlet end of the evaporator 41 is connected to an air suction port of the compressor 10, and further includes: a switching communication device 90, a first interface of the switching communication device 90 is connected with the exhaust port of the compressor 10, a second interface is connected with a second air inlet port of the heating pipe 22, and a liquid outlet port of the heating pipe 22 is connected with the throttling device through a pipeline; the third interface is connected with an air inlet port of the condenser 21; and the control device 100 is used for executing the operation instruction.

The return air duct between the outlet of the evaporator 41 and the inlet of the compressor 10 exchanges heat with both the capillary tubes 31 and 32.

The capillary 31 is connected between the liquid outlet of the condenser 21 and the evaporator 41; the capillary tube 32 is connected between the outlet of the heating tube 22 and the evaporator 41.

Compared with the system shown in fig. 1, in the present embodiment, by connecting the condenser 21 and the heating pipe 22 to different throttling devices, respectively, when the condenser 21 heats, the heating pipe 22 communicates with the evaporator 41 through the capillary tube 32, and the refrigerant in the heating pipe 22 can migrate to the evaporator 41; similarly, when the heating pipe 22 heats, the refrigerant in the condenser 21 migrates to the evaporator 41 through the capillary tube 31, thereby ensuring efficient and reliable operation of the system.

Fig. 4 is a schematic structural diagram illustrating a control device 100 of a refrigerator according to an exemplary embodiment.

As shown in fig. 4, the present embodiment provides a refrigerator, which includes a cabinet, one or more compartments disposed in the cabinet, and a condensation heat recovery system shown in fig. 1; an air supply outlet and the heating pipe 22 are arranged in the chamber.

Optionally, the heating tube 22 is arranged on the wall of the compartment. The heating pipe 22 is arranged on the wall surface of the compartment, and the corresponding air supply outlet is arranged, so that the compartment has the characteristics of double functions of heating and refrigerating and wide temperature zone change.

Optionally, the control device 100 further includes a damper control unit 102 for controlling the opening and closing of the damper 60 of the supply port;

the control device 100 is specifically configured to, when the operation instruction is a cooling mode operation instruction, control the damper control unit 102 to open the air outlet damper 60;

when the operation command is a heat recovery mode operation command, the damper control unit 102 controls the outlet damper 60 to be closed.

The compartment provided with the heating pipe 22 is, for example, a temperature-variable compartment. Thus, when the temperature-changing chamber needs to be cooled, the cooling mode operation instruction is executed. At this time, the switching control unit 101 controls the first interface and the third interface of the switching communication device 90 to communicate with each other, and the damper control unit 102 controls the opening of the supply-air outlet damper 60; the refrigerant is compressed from the exhaust port of the compressor 10 into high-temperature and high-pressure refrigerant, discharged, enters the condenser 21 through the switching communication device 90 to radiate heat to the external environment, then passes through the throttling device, namely the first capillary tube 30, is throttled and cooled, enters the evaporator 41 to be refrigerated, and finally returns to the air suction port of the compressor 10. And the air cooled by the evaporator 41 enters the temperature-changing chamber through the air supply outlet air door 60, thereby realizing the temperature reduction of the temperature-changing chamber.

When the temperature-changing chamber needs to be heated, a heat recovery mode operation instruction is executed. At this time, the switching control unit 101 controls the first interface and the second interface of the switching communication device 90 to communicate with each other, and the damper control unit 102 controls the outlet damper 60 to close; the refrigerant is compressed into high-temperature and high-pressure refrigerant from the compressor 10 and discharged, then enters the heating pipe 22 of the temperature-changing chamber to supply heat to the temperature-changing chamber, then passes through the throttling device, namely the first capillary tube 30, is throttled and cooled, enters the evaporator 41 to be refrigerated, and finally returns to the air suction port of the compressor 10. The cold energy generated by the refrigerating system is used for cooling other compartments of the refrigerator, such as a freezing compartment or a refrigerating compartment, and the high-temperature and high-pressure refrigerant is used for heating the temperature-variable chamber through the condensation heat released by the temperature-variable chamber heating pipe 22, so that the heating function of the temperature-variable chamber is realized.

Optionally, when the operation command is to operate in the cooling mode, the control device 100 is further configured to control the damper control unit 102 to close the air outlet damper 60 when the compartment temperature is lower than a set threshold. In this way, when the temperature-varying chamber is cooled to a set value, the air door in the air supply outlet of the temperature-varying chamber is closed, and the cooling of the temperature-varying chamber is stopped.

Optionally, when the operation command is for operating in the heat recovery mode, the control device 100 is further configured to, when the room temperature is lower than a set threshold, control the switching control unit 101 to switch the switching communication device 90 to the first interface to communicate with the third interface. At this time, the condenser 21 discharges heat to the external environment, the evaporator 41 outputs cold energy to supply cold to other compartments, such as a refrigerating compartment or a freezing compartment, and the refrigerant does not flow through the heating pipe 22 of the temperature-variable compartment any more, and stops supplying heat. When the temperature-changing chamber is cooled to a set value, the air door 60 of the air supply outlet of the chamber is closed, and the cooling of the chamber is stopped, so that the effects of energy conservation and consumption reduction are further achieved.

Optionally, the compartment temperature is measured by a temperature sensor, which is arranged in the compartment.

By adopting the scheme, the refrigerator provided by the invention realizes the recovery of the condensation heat in a common refrigerating system by arranging the condensation heat recovery system, realizes the heating function, realizes the cold and hot functions of the same chamber of the refrigerator, and realizes the wide temperature range change of-20 ℃ to 45 ℃; meanwhile, the refrigerator has low power consumption in the temperature rising process and saves more energy due to the use of the condensation heat of the system.

The embodiment of the invention also discloses a refrigerator, which comprises a refrigerator body, one or more compartments and a condensation heat recovery system shown in figure 2, wherein the refrigerator body is internally provided with one or more compartments; an air supply outlet and the heating pipe 22 are arranged in the chamber.

Optionally, the heating tube 22 is arranged on the wall of the compartment. The heating pipe 22 is arranged on the wall surface of the compartment, and the corresponding air supply outlet is arranged, so that the compartment has the characteristics of double functions of heating and refrigerating and wide temperature zone change.

Optionally, the control device 100 further includes a damper control unit 102 for controlling the opening and closing of the damper 60 of the supply port;

the control device 100 is specifically configured to, when the operation instruction is a cooling mode operation instruction, control the damper control unit 102 to open the air outlet damper 60;

when the operation command is a heat recovery mode operation command, the damper control unit 102 controls the outlet damper 60 to be closed.

The compartment provided with the heating pipe 22 is, for example, a temperature-variable compartment. Thus, when the temperature-changing chamber needs to be cooled, the cooling mode operation instruction is executed. At this time, the switching control unit 101 controls the first interface and the third interface of the switching communication device 90 to communicate with each other, and the damper control unit 102 controls the opening of the supply-air outlet damper 60; the refrigerant is compressed into high-temperature high-pressure refrigerant from the exhaust port of the compressor 10 and discharged, enters the condenser 21 through the switching communication device 90 to radiate heat to the external environment, then enters the evaporator 41 through the second capillary tube 31 for refrigeration after throttling and cooling, finally returns to the air suction port of the compressor 10, and the air cooled by the evaporator 41 enters the temperature-variable chamber through the air supply port air door 60, so that the temperature-variable chamber is cooled.

When the temperature-changing chamber needs to be heated, a heat recovery mode operation instruction is executed. At this time, the switching control unit 101 controls the first interface and the second interface of the switching communication device 90 to communicate with each other, and the damper control unit 102 controls the outlet damper 60 to close; the refrigerant is compressed into high-temperature high-pressure refrigerant from the compressor 10 and discharged, then enters the temperature-changing chamber heating pipe 22 to supply heat to the temperature-changing chamber, then passes through the third capillary tube 32, is throttled and cooled, enters the evaporator 41 to be refrigerated, and finally returns to the air suction port of the compressor 10. The cold energy generated by the refrigerating system is used for cooling other compartments of the refrigerator, such as a freezing compartment or a refrigerating compartment, and the high-temperature and high-pressure refrigerant is used for heating the temperature-variable chamber through the condensation heat released by the temperature-variable chamber heating pipe 22, so that the heating function of the temperature-variable chamber is realized.

When the condenser 21 heats, the heating pipe 22 at the high pressure level is communicated with the evaporator 41 at the low pressure level through the third capillary tube 32, and the refrigerant in the heating pipe 22 can migrate to the evaporator 41; similarly, when the heating pipe 22 heats, the refrigerant in the condenser 21 at the high pressure level migrates to the evaporator 41 through the second capillary tube 31, thereby ensuring efficient and reliable operation of the system. By arranging the switching and communicating device and the heating pipe, the recovery of condensation heat in a common refrigeration system is realized, the heating function is realized, and the cold and hot functions of the same chamber are realized; meanwhile, the power consumption in the heating process is low and the energy is saved due to the use of the condensation heat of the system.

The present invention is not limited to the structures that have been described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.