CN210463708U - Heat exchange device - Google Patents

Abstract

The utility model relates to a heat exchange device, include: a body, in which a heat exchange chamber is arranged; and a freezing mechanism and a thawing mechanism which are arranged independently; wherein the freezing mechanism and the thawing mechanism are selectively communicated with the heat exchange chamber. According to the heat exchange equipment, when the articles in the heat exchange chamber need to be frozen, the selective freezing mechanism is communicated with the heat exchange chamber, and when the articles in the heat exchange chamber need to be thawed, the selective thawing mechanism is communicated with the heat exchange chamber, so that when the articles need to be thawed, the articles are prevented from being thawed by searching an external heat source after being taken out of the heat exchange chamber, and the time is saved; and the freezing mechanism and the unfreezing mechanism are mutually independent and do not interfere with each other.

Description

Heat exchange device

Technical Field

The utility model relates to a heat exchange technology field especially relates to a heat exchange equipment.

Background

With the development of society and the improvement of living standard of people, people are pursuing quality of life more and more. Among them, heat exchange devices (e.g., refrigerators) for freezing or refrigerating foods have come into existence.

Before food frozen by a refrigerator is processed, the food needs to be thawed in advance, and the traditional thawing mode of the food mainly comprises the following steps: after the food is taken out of the freezer compartment of the refrigerator, the food is heated and thawed by an external heat source (heater, hot water, and hot air).

However, the above thawing methods for food require taking food out of the freezing chamber and then searching for an external heat source to heat and cool the food, which is time-consuming.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a heat exchange apparatus capable of reducing time for thawing food in order to solve the problem that the conventional heat exchange apparatus takes time for thawing food.

A heat exchange apparatus comprising:

a body in which a heat exchange chamber is provided; and

the freezing mechanism and the unfreezing mechanism are arranged independently;

wherein the freezing mechanism and the thawing mechanism are selectively communicated with the heat exchange chamber.

According to the heat exchange equipment, when the articles in the heat exchange chamber need to be frozen, the selective freezing mechanism is communicated with the heat exchange chamber, and when the articles in the heat exchange chamber need to be thawed, the selective thawing mechanism is communicated with the heat exchange chamber, so that when the articles need to be thawed, the articles are prevented from being thawed by searching an external heat source after being taken out of the heat exchange chamber, and the time is saved; and the freezing mechanism and the unfreezing mechanism are mutually independent and do not interfere with each other.

In one embodiment, the freezing mechanism has a first air duct, and the thawing mechanism has a second air duct;

wherein the freezing mechanism is communicated with the heat exchange chamber through the first air duct, and the unfreezing mechanism is communicated with the heat exchange chamber through the second air duct.

In one embodiment, the heat exchange apparatus further comprises a switching mechanism movable between a freeze position and a thaw position relative to the freeze mechanism and the thaw mechanism;

wherein, in the freeze position, the switching mechanism closes gas communication between the defrost mechanism and the heat exchange chamber and opens gas communication between the freeze mechanism and the heat exchange chamber; in the thawing position, the switching mechanism closes gas communication of the freezing mechanism with the heat exchange device and opens gas communication of the thawing mechanism with the heat exchange chamber.

In one embodiment, the heat exchange device further comprises a first driving mechanism connected with the switching mechanism and used for driving the switching mechanism to move between the freezing position and the thawing position relative to the freezing mechanism and the thawing mechanism.

In one embodiment, the heat exchange equipment further comprises a transition mechanism, wherein a transition air channel is formed in the transition mechanism, and a plurality of air ports communicated between the transition air channel and the heat exchange chamber are formed in the transition mechanism;

wherein the freezing mechanism and the unfreezing mechanism are selectively communicated with the heat exchange chamber through the transition mechanism.

In one embodiment, the thawing mechanism is a microwave heating mechanism.

In one embodiment, at least a portion of the heat exchange chamber is defined by a foamed insulation layer; and the inner wall of the heat exchange chamber is provided with a non-magnetic metal layer for reflecting the microwave in an attaching manner.

In one embodiment, the freezing mechanism comprises a compressor, a condenser, a throttling mechanism and an evaporator which are communicated in sequence, and the freezing mechanism is communicated with the heat exchange chamber through the evaporator.

In one embodiment, the heat exchange device further comprises a turntable for carrying articles, the turntable being rotatably disposed within the heat exchange chamber.

In one embodiment, the body comprises an accommodating part and an opening and closing door, wherein an accommodating cavity with an opening is formed in the accommodating part, and the opening and closing door is arranged at the opening in an openable and closable manner;

wherein the inner wall of the switch door and the inner wall of the accommodating cavity jointly define the heat exchange chamber.

In one embodiment, the heat exchange device is a refrigerator or freezer.

Drawings

Fig. 1 is a front view of a heat exchange apparatus according to an embodiment of the present invention;

FIG. 2 is a partial block diagram of the heat exchange apparatus shown in FIG. 1;

FIG. 3 is a block diagram of the heat exchange chamber of the heat exchange apparatus shown in FIG. 2 in a cooling mode;

FIG. 4 is a front view of a heat exchange apparatus according to another embodiment of the present invention;

FIG. 5 is a block diagram of the heat exchange chamber of the heat exchange apparatus shown in FIG. 2 in a defrost mode.

Heat exchange device 100 body 10 containing part 11 switch door 12 choking groove 121 wave avoiding window 122 interlocking device 123 heat exchange chamber 13 air return opening 14 freezing mechanism 20 first duct 21 first duct 22 unfreezing mechanism 30 second duct 31 second duct 32 magnetron 34 magnetic guide 35 switching mechanism 40 foaming heat insulation layer 50 transition mechanism 60 transition air duct 61 air inlet 62 turntable 70

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, an embodiment of the present invention provides a heat exchanging apparatus 100, and particularly, the heat exchanging apparatus 100 may not only achieve a function of freezing an object (e.g., food), but also achieve a function of thawing the object. It may be a refrigerator, an ice chest, or other heat exchange device 100, and is not limited herein.

The technical solution of the present application will be described in detail below by taking a refrigerator as an example. The present embodiment is only for exemplary purposes and does not limit the technical scope of the present application. In addition, the drawings in the embodiments omit unnecessary components to clearly show the technical features of the application.

Referring to fig. 1 and 2, the refrigerator includes a body 10, and a heat exchange chamber 13 for placing food is formed in the body 10. Specifically, the body 10 includes an accommodating portion 11 and an opening/closing door 12, an accommodating cavity having an opening is formed in the accommodating portion 11, the opening/closing door 12 is openably and closably disposed at the opening, a heat exchange chamber 13 is defined between an inner wall of the opening/closing door 12 and an inner wall of the accommodating cavity, and the opening/closing door 12 can control opening and closing of the heat exchange chamber 13.

It should be understood that, in some other embodiments, the forming manner of the heat exchange chamber 13 is not limited thereto, for example, the main body 10 may further include a receiving portion 11, a switch door 12 and a drawing portion, the receiving portion 11 is provided with a receiving cavity having an opening, the damper is openably and closably provided at the opening, the drawing portion may be drawn from the opening and provided in the receiving cavity, and the heat exchange chamber 13 is formed in the drawing portion, which is not limited herein.

The heat exchange device 100 further includes a freezing mechanism 20, and the freezing mechanism 20 is used for freezing food placed in the heat exchange chamber 13. Specifically, the freezing mechanism 20 includes a compressor, a condenser, a throttling mechanism, and an evaporator, which are sequentially connected.

When the refrigeration mechanism 20 works, refrigerant is firstly sucked into the compressor and compressed by the compressor to become high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant is conveyed into the condenser through a pipeline and releases heat in the condenser, the high-temperature high-pressure gaseous refrigerant can become normal-temperature high-pressure liquid refrigerant after being condensed by the condenser, the refrigerant enters the throttling mechanism (capillary tube) after being condensed, the pressure of the refrigerant is reduced through the throttling and pressure reduction of the capillary tube, the formed low-temperature low-pressure liquid refrigerant finally enters the evaporator, the heat is absorbed in the evaporator and evaporated to become low-temperature low-pressure gaseous refrigerant, and then the low-temperature low-pressure gaseous refrigerant is sucked into the compressor. In the evaporator, as the refrigerant evaporates to absorb heat, the temperature in the refrigerator decreases, thus achieving the purpose of cooling.

In order to refrigerate the heat exchange chamber 13 to freeze food therein, the freezing mechanism 20 communicates with the heat exchange chamber 13 through an evaporator thereof. Referring to fig. 3, specifically, the freezing mechanism 20 has a first air passage 22, and the evaporator communicates with the heat exchange chamber 13 through the first air passage 22. More specifically, the first air path 22 is formed in the first duct 21 (see fig. 2). In this way, the cold air generated after the heat exchange with the evaporator enters the heat exchange chamber 13 through the first air duct 22, so that the food in the heat exchange chamber 13 is frozen.

It is understood that in other embodiments, the freezing mechanism 20 may omit the first air duct 22, and directly communicate with the heat exchange chamber 13 through the evaporator, which is not limited herein.

Referring to fig. 3, in particular, in order to reduce the rate of the cold energy entering the heat exchange chamber 13 being transferred to the outside, at least a portion of the heat exchange chamber 13 is defined by the foamed insulation layer 50, and in particular, other portions defining the heat exchange chamber 13 are defined by the foamed insulation layer 50 except for the door 12 which is not defined by the foamed insulation layer 50; in order to maintain the air pressure in the heat exchange chamber 13 stable, the main body 10 is provided with an air return opening 14 communicating between the heat exchange chamber 13 and the outside, and the air return opening 14 allows the air in the heat exchange chamber 13 to flow to the outside, but prevents the microwaves from passing through.

The refrigerator further includes a thawing mechanism 30 provided separately from the freezing mechanism 20, the thawing mechanism 30 being used to thaw food placed in the heat exchange chamber 13. Specifically, the freezing mechanism 20 and the thawing mechanism 30 are selectively communicated with the heat exchange chamber 13.

With the above arrangement, it is possible to realize both the freezing function and the thawing function in the heat exchange chamber 13 of the main body 10. That is, when the food in the heat exchange chamber 13 needs to be frozen, the freezing mechanism 20 is selected to be communicated with the heat exchange chamber 13 (the heat exchange device 100 is in the freezing mode at this time), and when the food in the heat exchange chamber 13 needs to be thawed, the thawing mechanism 30 is selected to be communicated with the heat exchange chamber 13 (the heat exchange device 100 is in the thawing mode at this time), so that the food is prevented from being thawed by searching for an external heat source after being taken out of the heat exchange chamber 13, and the time is saved; the freezing mechanism 20 and the thawing mechanism 30 are independent and do not interfere with each other.

It should be noted that, in addition to the heat exchange chamber 13 which can freeze and thaw food, a refrigerating chamber which can only refrigerate food and a freezing chamber which can only freeze food may be provided in the body 10, and the positions of the heat exchange chamber 13 and the refrigerating chamber and the freezing chamber are not limited.

Referring to fig. 4, in some embodiments, the freezing chamber is located below the heat exchange chamber 13, and the opening and closing door 12 may control the opening and closing of the heat exchange chamber 13 and the freezing chamber.

Specifically, the heat exchange device 100 further comprises a controller, and the freezing mechanism 20 and the thawing mechanism 30 are electrically connected to the controller, and the controller can control the operations of the freezing mechanism 20 and the thawing mechanism 30. More specifically, the body 10 is provided with a touch button, and the heat exchange apparatus 100 can be selected to be in a freezing mode or a thawing mode by operating the touch button.

In one embodiment, the freezing mechanism 20 and the thawing mechanism 30 are both located on the back of the body 10, that is, when the heat exchange apparatus 100 is in a normal operation state, the freezing mechanism 20 and the thawing mechanism 30 are located on the side of the body 10 facing away from the user. Of course, in other embodiments, the freezing and thawing mechanism 30 may be located on the side of the body 10, and is not limited herein.

Referring to fig. 3, in one embodiment, the defrosting mechanism 30 has a second air passage 32, and the defrosting mechanism 30 communicates with the heat exchange chamber 13 through the second air passage 32. More specifically, the second air duct 32 is formed inside the second duct 31 (see fig. 2). It is understood that in other embodiments, the second air duct 32 may be omitted from the defrosting mechanism 30, and is not limited thereto.

Referring to fig. 5, in one embodiment, the thawing mechanism 30 is a microwave heating mechanism. Specifically, the thawing mechanism 30 includes a transformer (not shown), a magnetron 34, and a magnetic guide 35, wherein a power supply supplies a high voltage to the magnetron 34 after transforming the voltage, the magnetic hollow tube continuously generates microwaves under the power supply, and the microwaves are transmitted through the magnetic guide 35 and then enter the heat exchange chamber 13.

Specifically, the transformer, the magnetron 34, and the magnetic guide 35 are located within the second air duct 32. It is understood that in other embodiments, the transformer, the magnetron 34 and the magnetic guide 35 may be located outside the second air duct 32, and the microwaves conducted by the magnetic guide 35 are conducted into the heat exchange chamber 13 through the second air duct 32, which is not limited herein.

Specifically, in order to prevent the microwave from leaking to the outside from the door gap of the opening/closing door 12, a choke groove 121 (choke groove) is formed in the opening/closing door 12; in order to facilitate the observation of the state of the food in the heat exchange chamber 13 from the opening and closing door 12, a wave avoiding window 122 is provided on the opening and closing door 12.

Referring to fig. 1, further, in order to ensure the safety of heating food in the heat exchange chamber 13 by using microwaves, an interlock 123 is further provided on the switch door 12, the interlock 123 is electrically connected to the magnetron 34, when the switch door 12 is closed, the interlock 123 is triggered, and at this time, the magnetron 34 can be powered on, and the microwave thawing function can be started; the interlock 123 is open when the switch door 12 is open, and the magnetron 34 is not energized, and the microwave defrost function will not be enabled. Specifically, when the thawing means 30 is a microwave heating means, the inner wall of the heat exchange chamber 13 is provided with a non-magnetic metal layer in a bonded manner in order to reflect the microwaves.

Referring to fig. 2, in one embodiment, the heat exchange apparatus 100 further includes a switching mechanism 40, and the switching mechanism 40 is movable between a freezing position and a thawing position relative to the freezing mechanism 20 and the thawing mechanism 30. Specifically, referring to fig. 3, when the switching mechanism 40 is in the freezing position, the switching mechanism 40 closes the gas communication of the thawing mechanism 30 with the heat exchange chamber 13 and opens the gas communication of the freezing mechanism 20 with the heat exchange chamber 13; referring to fig. 5, when the switching mechanism 40 is in the thawing position, the switching mechanism 40 closes the gas communication of the freezing mechanism 20 with the heat exchange device 100 and opens the gas communication of the thawing mechanism 30 with the heat exchange chamber 13.

Specifically, the switching mechanism 40 includes a switch plate that is movable between a freezing position and a thawing position with respect to the first duct 21 and the second duct 31. When the switching mechanism 40 is in the freezing position, the switching mechanism 40 closes the second air duct 32 from gaseous communication with the heat exchange chamber 13 and opens the first air duct 22 from gaseous communication with the heat exchange chamber 13; when the switching mechanism 40 is in the defrost position, the switching mechanism 40 closes the first air passage 22 from gaseous communication with the heat exchange chamber 13 and opens the second air passage 32 from gaseous communication with the heat exchange chamber 13. More specifically, a non-magnetic metal layer is attached to the outside of the switch board to reflect the microwave.

In one embodiment, the heat exchange device 100 further comprises a first driving mechanism (not shown) electrically connected to the controller, the first driving mechanism being connected to the switching mechanism 40 for driving the switching mechanism 40 to move between the freezing position and the thawing position relative to the freezing mechanism 20 and the thawing mechanism 30.

Referring to fig. 2, in an embodiment, the heat exchange apparatus 100 further includes a transition mechanism 60, a transition air duct 61 is formed in the transition mechanism 60, and a plurality of air inlets 62 communicated between the transition air duct 61 and the heat exchange chamber 13 are further formed in the transition mechanism 60. Specifically, the freezing mechanism 20 and the thawing mechanism 30 are selectively communicated with the heat exchange chamber 13 through a transition mechanism 60.

That is, when the freezing mechanism 20 is selected to communicate with the heat exchange chamber 13, the cold air flowing in the first air duct 22 firstly enters the transition air duct 61 and enters the heat exchange chamber 13 through the plurality of air inlets 62 of the transition air duct 61; when the selective thawing mechanism 30 is communicated with the heat exchange chamber 13, the microwaves flowing in the first air duct 22 first enter the transition air duct 61 and enter the heat exchange chamber 13 through the plurality of air inlets 62 of the transition air duct 61.

The transition air duct 61 plays a role in intermediate transition between the freezing mechanism 20 and the heat exchange chamber 13, and between the thawing mechanism 30 and the heat exchange chamber 13; and the transition air duct 61 has a plurality of air inlets 62 communicating with the heat exchange chamber 13, so that heat or cold can be diffused from a plurality of places in the heat exchange chamber 13.

In one embodiment, the transition mechanism 60 is disposed perpendicular to both the first conduit 21 and the second conduit 31. That is, when the first duct 21 and the second duct 31 are vertically disposed on the back of the body 10, the transition mechanism 60 is located inside the body 10 and at the top end of the heat exchange chamber 13. It is understood that, in other embodiments, the transition mechanism 60 and the first duct 21 and the second duct 31 may be disposed non-perpendicularly, and are not limited herein.

Referring to fig. 2, in one embodiment, the heat exchanging device 100 further includes a rotating plate 70 and a second driving mechanism (not shown), the rotating plate 70 is disposed in the heat exchanging chamber 13, and the second driving mechanism can drive the rotating plate 70 to rotate in the heat exchanging chamber 13, so as to uniformly cool or heat the food. Specifically, an embedded groove is formed in the bottom wall of the heat exchange chamber 13, the rotary disc 70 is rotatably embedded into the embedded groove, and the upper surface of the rotary disc 70 is flush with the upper surface of the bottom wall of the heat exchange chamber 13, so that more food can be placed in the heat exchange chamber 13, and the heat exchange chamber is more attractive.

The embodiment of the present invention provides a heat exchange device 100, which comprises:

the heat exchange apparatus 100 is normally in the freeze mode:

referring to fig. 3, in the freezing mode, the first driving mechanism drives the switching plate to move to the freezing position, at this time, the switching plate closes the air communication between the second air duct 32 and the transition air duct 61 (and at this time, the controller controls the defrosting mechanism 30 not to operate), opens the air communication between the first air duct 22 and the transition air duct 61, and the air after heat exchange with the evaporator of the freezing mechanism 20 flows from the first air duct 22 to the heat exchange chamber 13 through the transition air duct 61, so as to freeze the food in the heat exchange chamber 13.

Referring to fig. 5, when the freezing mode is switched to the thawing mode, the touch button is operated to switch to the thawing mode and set the thawing time, and at the same time, the first driving mechanism drives the switch board to move from the freezing position to the thawing position, at which time the switch board closes the air communication between the first air duct 22 and the transition air duct 61 (and at this time the controller controls the freezing mechanism 20 not to operate), opens the air communication between the second air duct 32 and the transition air duct 61, and then the controller controls the thawing mechanism 30 to operate (i.e., the controller controls the magnetron 34 to generate microwaves), and the microwaves are conducted from the second air duct 32 to the heat exchange chamber 13 through the transition air duct 61 under the action of the magnetic guide 35 to thaw food in the heat exchange chamber 13; the controller may control the second driving mechanism to drive the rotating disc 70 to rotate, so that the food on the rotating disc 70 receives microwaves more uniformly.

When the set defrosting time is reached, the controller controls the magnetron 34 to stop working, and after the interlocking device 123 is in an on-off state once (after the interlocking device 123 is opened and then closed), the controller controls the first driving mechanism to drive the switching plate to switch from the defrosting position to the freezing position, at this moment, the switching plate closes the gas communication between the second air duct 32 and the transition air duct 61, and opens the gas communication between the first air duct 22 and the transition air duct 61, so that a defrosting cycle is completed.

The embodiment of the utility model provides a heat exchange device 100 has following beneficial effect:

1. when the food in the heat exchange chamber 13 needs to be frozen, the selective freezing mechanism 20 is communicated with the heat exchange chamber 13 (the heat exchange device 100 is in the freezing mode at this time), and when the food in the heat exchange chamber 13 needs to be thawed, the selective thawing mechanism 30 is communicated with the heat exchange chamber 13 (the heat exchange device 100 is in the thawing mode at this time), so that the food is prevented from being thawed by searching an external heat source after being taken out of the heat exchange chamber 13, and the time is saved;

2. the freezing mechanism 20 and the unfreezing mechanism 30 are arranged independently and do not interfere with each other during working;

3. the first driving mechanism drives the switching plate to switch between the freezing position and the thawing position, so that the heat exchange equipment 100 can be conveniently switched between the freezing mode and the thawing mode;

4. the thawing mechanism 30 is heated by microwave, and has the characteristics of high heating speed, small heat loss and convenient operation.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (11)

1. A heat exchange device (100), comprising:

a body (10) in which a heat exchange chamber (13) is provided; and

a freezing mechanism (20) and a thawing mechanism (30) which are arranged independently of each other;

wherein the freezing mechanism (20) and the thawing mechanism (30) are selectively communicated with the heat exchange chamber (13).

2. The heat exchange apparatus (100) of claim 1, wherein the freezing mechanism (20) has a first air duct (22), and the thawing mechanism (30) has a second air duct (32);

wherein the freezing mechanism (20) is communicated with the heat exchange chamber (13) through the first air duct (22), and the thawing mechanism (30) is communicated with the heat exchange chamber (13) through the second air duct (32).

3. Heat exchange device (100) according to claim 1 or 2, characterised in that said heat exchange device (100) further comprises a switching mechanism (40), said switching mechanism (40) being movable between a freezing position and a thawing position with respect to said freezing mechanism (20) and said thawing mechanism (30);

wherein, in the freezing position, the switching mechanism (40) closes the gas communication of the thawing mechanism (30) with the heat exchange chamber (13) and opens the gas communication of the freezing mechanism (20) with the heat exchange chamber (13); in the thawing position, the switching mechanism (40) closes gas communication of the freezing mechanism (20) with the heat exchange device (100) and opens gas communication of the thawing mechanism (30) with the heat exchange chamber (13).

4. The heat exchange device (100) according to claim 3, wherein the heat exchange device (100) further comprises a first driving mechanism connected with the switching mechanism (40) and used for driving the switching mechanism (40) to move between the freezing position and the thawing position relative to the freezing mechanism (20) and the thawing mechanism (30).

5. The heat exchange device (100) according to claim 1 or 2, wherein the heat exchange device (100) further comprises a transition mechanism (60), a transition air duct (61) is formed in the transition mechanism (60), and a plurality of air inlets (62) communicated between the transition air duct (61) and the heat exchange chamber (13) are formed in the transition mechanism (60);

wherein the freezing mechanism (20) and the thawing mechanism (30) are selectively communicated with the heat exchange chamber (13) through the transition mechanism (60).

6. Heat exchange device (100) according to claim 1, characterised in that said defrosting means (30) are microwave heating means.

7. Heat exchange device (100) according to claim 6, characterised in that at least part of said heat exchange chamber (13) is delimited by a foamed insulating layer (50); and the inner wall of the heat exchange chamber (13) is attached with a non-magnetic metal layer for reflecting the microwave.

8. Heat exchange device (100) according to claim 1, characterised in that said freezing means (20) comprise a compressor, a condenser, a throttling means and an evaporator in communication in sequence, through which said freezing means (20) communicates with said heat exchange chamber (13).

9. Heat exchange device (100) according to claim 1, wherein the heat exchange device (100) further comprises a turntable (70) for carrying articles, the turntable (70) being rotatably arranged within the heat exchange chamber (13).

10. The heat exchange device (100) according to claim 1, wherein the body (10) comprises a containing part and an opening and closing door, the containing part is provided with a containing cavity with an opening, and the opening and closing door is arranged at the opening in an openable and closable manner;

wherein the inner wall of the switch door and the inner wall of the containing cavity jointly define the heat exchange chamber (13).

11. Heat exchange device (100) according to claim 1, wherein said heat exchange device (100) is a refrigerator or an ice bin.

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