Refrigerator

Abstract

The utility model relates to the technical field of refrigeration equipment, and discloses a refrigerator which comprises a refrigerator body, an evaporator and a dehumidification module. Wherein a freezing inner container and a refrigerating inner container are arranged in the refrigerator body, a freezing air channel is defined between the freezing inner container and the refrigerator body, and a refrigerating air return channel is communicated between the freezing air channel and the refrigerating inner container; the evaporator is arranged in the freezing air duct, and air in the freezing inner container flows through the evaporator and exchanges heat with the evaporator; the dehumidification module is attached to the evaporator and arranged towards the back plate of the box body, the dehumidification module comprises a heat conduction cover shell, an airflow inlet and an airflow outlet are formed in the heat conduction cover shell, and the refrigeration air return duct communicates with the airflow inlet. Frost layers on the evaporator can be reduced, and the energy efficiency of the refrigerator is improved.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, for example, to a refrigerator. Background Art

[0002] Refrigerators can be used to refrigerate or freeze food. Usually, fruits, vegetables and other foods are placed in the cold storage compartment, and meat and other foods are placed in the freezer compartment. The storage time of food is extended by low-temperature refrigeration or freezing. During the operation of a single-system air-cooled refrigerator, the moisture in the air flowing through the cold storage / freezer compartment is precipitated on the surface of the evaporator and frozen into frost or ice. In particular, the vegetables or fruits stored in the cold storage compartment carry more moisture. Since vegetables or fruits are frequently taken out and put in, the humidity in the cold storage space will increase. At the same time, the frequent opening of the refrigerator door will also increase the humidity in the cold storage compartment, making the evaporator very easy to frost. With the increase of the frost or ice layer, the thermal resistance of the evaporator increases, and the heat exchange efficiency decreases. At the same time, the channel for air to flow through the evaporator surface is reduced, the wind resistance increases, and the refrigerator refrigeration cycle air volume decreases. The refrigerator's refrigeration capacity gradually deteriorates, or even fails to refrigerate. Therefore, the evaporator needs to be defrosted frequently.

[0003] In the related art, a heating element is disposed at the bottom of the evaporator. When the heating element is in operation, the frost layer on the evaporator can be heated and melted.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] Since the evaporator needs to be defrosted frequently, the heating element needs to be started frequently. A large amount of heat will be generated when the heating element heats for defrosting. After defrosting, when the compressor starts to refrigerate, more energy is needed to remove the excess heat in the space where the evaporator is located, resulting in an increase in the energy consumption of the refrigerator.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The disclosed embodiment provides a refrigerator to reduce the formation of frost on an evaporator, reduce the activation frequency of a heating element disposed on the evaporator, reduce heat generation, and improve the refrigeration capacity of the evaporator and the energy efficiency of the refrigerator.

[0009] In some embodiments, the refrigerator includes a cabinet, an evaporator and a dehumidification module; wherein, a freezing liner and a refrigerating liner are provided inside the cabinet, a freezing air duct is defined between the freezing liner and the cabinet, and a refrigerating return air duct is connected between the freezing air duct and the refrigerating liner; the evaporator is arranged in the freezing air duct, and the air in the freezing liner flows through the evaporator and exchanges heat with the evaporator; the dehumidification module is attached to the evaporator and arranged toward the back plate of the cabinet, the dehumidification module includes a heat-conducting cover shell, and an air flow inlet and an air flow outlet are provided on the heat-conducting cover shell, wherein the refrigerating return air duct is connected to the air flow inlet.

[0010] In some embodiments, the dehumidification module further includes: an air valve, which is arranged at the air flow outlet; when the refrigerator operates in a refrigeration mode, the air valve is switched to an open state; when the refrigerator operates in a defrost mode, the air valve is switched to a closed state.

[0011] In some embodiments, the dehumidification module further includes: a first heating element, which is disposed on a first side wall of the heat-conductive housing attached to the evaporator.

[0012] In some embodiments, the first heating element includes one of an electric heating wire, an electric heating rod, and an electric heating plate.

[0013] In some embodiments, a drainage hole is disposed on the bottom wall of the heat-conductive housing, and the drainage hole is arranged close to the first side wall.

[0014] In some embodiments, the refrigerator further includes a second heating element disposed at the bottom end of the evaporator.

[0015] In some embodiments, the second heating element comprises an electric heating tube.

[0016] In some embodiments, the refrigerator also includes a water receiving pan, which is arranged below the evaporator and the heat-conductive cover shell to receive defrost water when the first heating element and / or the second heating element is in operation; wherein, a drain outlet is provided on the bottom wall of the water receiving pan to discharge the defrost water received in the water receiving pan to the outside of the cabinet.

[0017] In some embodiments, a partition plate is provided in the water receiving tray to separate the water receiving tray into a first water receiving space corresponding to the evaporator and a second water receiving space corresponding to the heat conductive housing.

[0018] In some embodiments, the bottom wall of the water receiving tray is inclined downward from the evaporator toward the heat-conducting casing.

[0019] The refrigerator provided by the embodiment of the present disclosure can achieve the following technical effects:

[0020] The refrigerator provided by the embodiment of the present disclosure has a dehumidification module disposed between the evaporator and the back plate of the box body, and the heat-conducting cover of the dehumidification module is attached to the evaporator, and the heat-conducting cover can absorb the cold of the evaporator and transfer it to its own interior, wherein the cold return air duct of the cold storage liner is connected to the air flow inlet of the heat-conducting cover. The air in the freezing liner flows through the evaporator and directly exchanges heat with the evaporator; the air in the cold storage liner enters the heat-conducting cover through the air flow inlet, realizes the heat exchange with the heat-conducting cover and the indirect heat exchange with the evaporator, and then flows out of the heat-conducting cover through the air flow outlet and merges with the air after the heat exchange with the evaporator. In this way, the air with a higher temperature and a higher humidity in the cold storage liner will condense into frost inside the heat-conducting cover after flowing into the low-temperature heat-conducting cover, thereby achieving the purpose of removing moisture, and this part of the air flow does not flow through the evaporator, so the frosting of the evaporator can be greatly reduced, which not only improves the refrigeration capacity of the evaporator, but also reduces the start-up frequency of the heating element arranged on the evaporator, reduces the generation of heat, and improves the refrigeration energy efficiency of the refrigerator.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 is a cross-sectional schematic diagram of a refrigerator provided by an embodiment of the present disclosure;

[0024] Figure 2 yes Figure 1 A partial enlarged schematic diagram of

[0025] Figure 3 is a structural schematic diagram of an evaporator and a dehumidification module provided in an embodiment of the present disclosure;

[0026] Figure 4 It is a schematic diagram of the flow direction of airflow in an evaporator and a dehumidification module provided in an embodiment of the present disclosure, wherein the direction of the arrow represents the flow direction of the air.

[0027] Reference numerals:

[0028] 100, box body; 101, freezing air duct; 102, refrigeration return air duct; 110, freezing liner; 120, refrigeration liner;

[0029] 200, evaporator;

[0030] 300, dehumidification module; 310, heat-conducting housing; 311, air flow inlet; 312, air flow outlet; 313, drainage hole; 314, air guide pipe; 320, air valve; 330, first heating element;

[0031] 400. A second heating element. DETAILED DESCRIPTION

[0032] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0033] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0034] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0035] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0036] Unless otherwise stated, the term "plurality" means two or more.

[0037] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0038] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0039] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0040] Refrigerators can be used to refrigerate or freeze food. Usually, fruits, vegetables and other foods are placed in the cold storage compartment, and meat and other foods are placed in the freezer compartment. The storage time of food is extended by low-temperature refrigeration or freezing. During the operation of a single-system air-cooled refrigerator, the moisture in the air flowing through the cold storage / freezer compartment is precipitated on the surface of the evaporator and frozen into frost or ice. In particular, the vegetables or fruits stored in the cold storage compartment carry more moisture. Since vegetables or fruits are frequently taken out and put in, the humidity in the cold storage space will increase. At the same time, the frequent opening of the refrigerator door will also increase the humidity in the cold storage compartment, making the evaporator very easy to frost. With the increase of the frost or ice layer, the thermal resistance of the evaporator increases, and the heat exchange efficiency decreases. At the same time, the channel for air to flow through the evaporator surface is reduced, the wind resistance increases, and the refrigerator refrigeration cycle air volume decreases. The refrigerator's refrigeration capacity gradually deteriorates, or even fails to refrigerate. Therefore, the evaporator needs to be defrosted frequently.

[0041] In the related art, a heating element is disposed at the bottom of the evaporator. When the heating element is in operation, the frost layer on the evaporator can be heated and melted.

[0042] However, since the evaporator needs to be defrosted frequently, the heating element needs to be started frequently. A large amount of heat will be generated when the heating element heats for defrosting. After the defrosting is completed, after the compressor starts to refrigerate, more energy is required to remove the excess heat in the space where the evaporator is located, resulting in an increase in the energy consumption of the refrigerator. The heat generated during defrosting will also affect the refrigeration / freezing compartment, affecting the preservation / freezing time of food, further increasing the energy consumption of the refrigerator.

[0043] Therefore, the embodiments of the present disclosure provide a refrigerator that can reduce the formation of frost on the evaporator and improve the energy efficiency of the refrigerator.

[0044] Combination Figures 1 to 4As shown, the refrigerator provided by the embodiment of the present disclosure includes a cabinet 100, an evaporator 200 and a dehumidification module 300; wherein, a freezing liner 110 and a refrigerating liner 120 are provided inside the cabinet 100, a freezing air duct 101 is defined between the freezing liner 110 and the cabinet 100, and a refrigerating return air duct 102 is connected between the freezing air duct 101 and the refrigerating liner 120; the evaporator 200 is arranged in the freezing air duct 101, and the air in the freezing liner 110 flows through the evaporator 200 and exchanges heat with the evaporator 200; the dehumidification module 300 is attached to the evaporator 200 and arranged toward the back plate of the cabinet 100, and the dehumidification module 300 includes a heat conductive cover 310, and an air flow inlet 311 and an air flow outlet 312 are provided on the heat conductive cover 310, wherein the refrigerating return air duct 102 is connected to the air flow inlet 311.

[0045] Optionally, the air inlet 311 and the air outlet 312 are arranged in sequence along the direction of air flowing through the evaporator 200, so that the air flowing out of the air outlet 312 can merge with the air flowing out of the freezing tank and after heat exchange with the evaporator 200.

[0046] Optionally, the first end of the refrigerated return air duct 102 is connected to the refrigerated inner tank 110, and the second end of the refrigerated return air duct 102 is connected to the airflow inlet 311, so that the airflow in the refrigerated inner tank 110 flows into the heat-conducting cover 310. The air in the refrigerated inner tank 110 flows through the evaporator 200 and directly exchanges heat with the evaporator 200; the air in the refrigerated inner tank 120 enters the heat-conducting cover 310 through the airflow inlet 311, realizes heat exchange with the heat-conducting cover 310 and indirectly exchanges heat with the evaporator 200, and then flows out of the heat-conducting cover 310 through the airflow outlet 312 and merges with the air that has exchanged heat with the evaporator 200. In this way, after the air with higher temperature and humidity in the refrigerated liner 120 flows into the low-temperature heat-conductive shell 310, it will condense into frost inside the heat-conductive shell 310, thereby achieving the purpose of removing moisture, and this part of the airflow does not flow through the evaporator 200, so it can greatly reduce the frosting of the evaporator 200, thereby improving the refrigeration effect of the evaporator 200 and improving the refrigeration energy efficiency of the refrigerator.

[0047] Optionally, the heat-conductive housing 310 is made of a material with high thermal conductivity, such as copper.

[0048] In the refrigerator provided by the embodiment of the present disclosure, a dehumidification module is arranged between the evaporator and the back plate of the box body, and the heat-conducting cover of the dehumidification module is attached to the evaporator. The heat-conducting cover can absorb the cold of the evaporator and transfer it to its own interior, wherein the cold return air duct of the cold storage liner is connected to the air flow inlet of the heat-conducting cover. The air in the freezing liner flows through the evaporator and directly exchanges heat with the evaporator; the air in the cold storage liner enters the heat-conducting cover through the air flow inlet, realizes the heat exchange with the heat-conducting cover and the indirect heat exchange with the evaporator, and then flows out of the heat-conducting cover through the air flow outlet and merges with the air after the heat exchange with the evaporator. In this way, the air with a higher temperature and a higher humidity in the cold storage liner will condense into frost inside the heat-conducting cover after flowing into the low-temperature heat-conducting cover, thereby achieving the purpose of removing moisture, and this part of the air flow does not flow through the evaporator, so the frosting of the evaporator can be greatly reduced, which not only improves the refrigeration capacity of the evaporator, but also reduces the start-up frequency of the heating element arranged on the evaporator, reduces the generation of heat, and improves the refrigeration energy efficiency of the refrigerator.

[0049] Optionally, the dehumidification module further includes an air valve 320. The air valve 320 is disposed at the air flow outlet 320; when the refrigerator operates in a cooling mode, the air valve 320 is switched to an open state; when the refrigerator operates in a defrosting mode, the air valve 320 is switched to a closed state.

[0050] By setting the air valve 320, the air flow outlet can be closed when the refrigerator is running in the defrosting mode. In this way, heat will not be dissipated into the freezing space, and the temperature in the freezing tank will be less affected.

[0051] Among them, the return air of the refrigerated inner tank is characterized by high temperature and high humidity. After flowing into the heat-conducting cover 310, the temperature drops and frost forms on the inner wall of the heat-conducting cover 310. Since the circulation area in the heat-conducting cover 310 is large, the frost on the heat-conducting cover 310 has little effect on the circulating air volume. And since the return air temperature of the refrigerated inner tank is greater than 0°C, the return air of the refrigerated inner tank can be used to melt the frost layer when the air valve 320 is closed.

[0052] Optionally, in order to improve the defrosting effect, the dehumidification module further includes a first heating element 330. The first heating element 330 is disposed on a first side wall of the heat-conducting housing attached to the evaporator.

[0053] A first heating element 330 is provided on the first side wall of the air guide housing 310 that is attached to the evaporator 200, and can be used to heat the heat-conducting housing 300, thereby melting the frost layer. At the same time, the heat-conducting housing 310 is attached to the evaporator 200, and heat can be transferred to the evaporator 200 by heat conduction. If there is a frost layer on the evaporator 200, the frost layer on the evaporator 200 can be heated and melted.

[0054] Optionally, the first heating element 330 includes one of an electric heating wire, an electric heating rod, and an electric heating plate.

[0055] Optionally, the resistance of the electric heating wire is small, so a large amount of heat can be generated in a short time, achieving rapid heating; and the cost of the electric heating wire is low, which is conducive to reducing costs. Optionally, the electric heating wire is serpentine-shaped from top to bottom. In this way, the arrangement of the electric heating wire can be reduced, the cost can be reduced, and the electric heating wire can be prevented from affecting the transfer of cold energy from the evaporator 200 to the heat transfer housing 310.

[0056] Optionally, the electric heating plate is small in size and can directly convert heat energy into thermal energy. Compared with the electric heating wire, it has a large contact area with the heat-conducting cover 310 and a high energy utilization rate, which is beneficial to improving the defrosting effect.

[0057] Optionally, the electric heating rod is usually made of evenly wound electric heating wire, which heats evenly and is easy to replace and repair.

[0058] Optionally, a drainage hole 313 is provided on the bottom wall of the heat-conducting housing 310 , and the drainage hole 313 is arranged close to the first side wall.

[0059] Since the first side wall is attached to the evaporator 200 , a frost layer may form first or a thick frost layer may form on the first side wall. Arranging the drainage hole 313 close to the first side wall can facilitate the discharge of defrost water from the heat-conducting housing 310 .

[0060] Optionally, the drain hole 313 is connected to a guide pipe 314 extending downward, and a sealing sheet is provided at the drain hole 313, one end of the sealing sheet is fixed to the edge of the drain hole 313, and the other end of the sealing sheet is arranged in the guide pipe and tilted downward. In this way, when defrost water flows out, under the action of gravity, the sealing sheet will continue to tilt downward to allow the defrost water to flow out.

[0061] Optionally, the refrigerator further comprises a second heating element 400, which is arranged at the bottom end of the evaporator 200. The second heating element 400 is arranged to be started when the refrigerator operates in a defrosting mode, so as to defrost the evaporator 200.

[0062] Optionally, the second heating element 400 includes an electric heating tube.

[0063] The electric heating tube includes a stainless steel tube and an electric heating wire. Specifically, the high-temperature electric heating wire is evenly distributed in the stainless steel seamless tube, and the gap is filled with crystalline magnesium oxide powder with good thermal conductivity and insulation properties. It has high thermal efficiency and uniform heating. When current passes through the high-temperature electric heating wire, the generated heat diffuses to the surface of the metal tube through the magnesium oxide powder, and then transfers to the evaporator 200 or the air to achieve the purpose of heating. The electric heating tube has high heating efficiency and high safety factor, and can avoid corrosion from defrosting water.

[0064] Optionally, the refrigerator further comprises a water receiving tray. The water receiving tray is arranged below the evaporator 200 and the heat conductive cover 310 to receive defrost water when the first heating element 400 and / or the second heating element 400 are in operation; wherein a drain port is arranged on the bottom wall of the water receiving tray to discharge the defrost water received in the water receiving tray to the outside of the cabinet.

[0065] Optionally, the water receiving tray is used to collect defrost water generated in the evaporator 200 and the heat-conducting housing 310. The defrost water is led out to the evaporation dish or discharged to the outside of the cabinet 100 through the drain port.

[0066] Optionally, the surface of the water receiving tray is coated with a hydrophobic coating, so as to improve the flowability of the defrosting water. Optionally, the surface of the water receiving tray is coated with an antibacterial coating to prevent the growth and reproduction of bacteria in the water receiving tray.

[0067] Optionally, a partition plate is provided in the water receiving tray to separate the water receiving tray into a first water receiving space corresponding to the evaporator 200 and a second water receiving space corresponding to the heat conductive housing 310 .

[0068] Optionally, the first water receiving space is used to receive the defrost water generated by the evaporator 200, and the second water receiving space is used to receive the defrost water generated in the heat-conducting housing 310. In this way, it is possible to avoid setting up separate water receiving pans, thereby saving space, and the integrated structure can improve the stability and safety of the water receiving pan. Optionally, the bottom wall of the water receiving pan is provided with a first sub-drain port corresponding to the first water receiving space and a second sub-drain port corresponding to the second water receiving space, respectively, so as to improve the discharge efficiency of the defrost water.

[0069] Optionally, the bottom wall of the water receiving tray is inclined downward from the evaporator 200 to the heat conducting casing 310 .

[0070] The drain port is arranged at the lowest point of the bottom wall of the water receiving tray. When the bottom wall of the water receiving tray is provided with a first sub-drain port and a second sub-drain port, the first sub-drain port is arranged at the lowest point corresponding to the first water receiving space, and the second sub-drain port is arranged at the lowest point corresponding to the second water receiving space.

[0071] Optionally, the bottom wall of the water receiving tray is inclined downward at an angle of 5° to 15°.

[0072] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A refrigerator, characterized in that: include: A box body (100) is provided with a freezing liner (110) and a refrigerating liner (120) therein; a freezing air duct (101) is defined between the freezing liner (110) and the box body (100); and a refrigerating return air duct (102) is connected between the freezing air duct (101) and the refrigerating liner (120); An evaporator (200) is arranged in the freezing air duct (101), and the air in the freezing inner container (110) flows through the evaporator (200) and exchanges heat with the evaporator (200); The dehumidification module (300) is attached to the evaporator (200) and arranged toward the back plate of the box (100), and the dehumidification module (300) includes a heat-conducting cover (310), and the heat-conducting cover (310) is provided with an air flow inlet (311) and an air flow outlet (312), wherein the refrigerated return air duct (102) is connected to the air flow inlet (311).

2. The refrigerator according to claim 1, characterized in that: The dehumidification module also includes: An air valve (320) is disposed at the air flow outlet (312); When the refrigerator operates in a refrigeration mode, the air valve (320) is switched to an open state; when the refrigerator operates in a defrosting mode, the air valve (320) is switched to a closed state.

3. The refrigerator according to claim 1, characterized in that: The dehumidification module also includes: The first heating element (330) is disposed on a first side wall of the heat-conducting housing (310) and is attached to and connected to the evaporator (200).

4. The refrigerator according to claim 3, characterized in that: The first heating element (330) comprises one of an electric heating wire, an electric heating rod, and an electric heating plate.

5. The refrigerator according to claim 3, characterized in that: A drainage hole (313) is provided on the bottom wall of the heat-conducting housing (310), and the drainage hole (313) is arranged close to the first side wall.

6. The refrigerator according to claim 3, characterized in that: The second heating element (400) is arranged at the bottom end of the evaporator (200).

7. The refrigerator according to claim 6, characterized in that: Also includes: The second heating element (400) comprises an electric heating tube.

8. The refrigerator according to claim 6, characterized in that: Also includes: A water receiving tray is arranged below the evaporator (200) and the heat-conducting cover shell (310) to receive defrost water when the first heating element (330) and / or the second heating element (400) are in operation; Wherein, the bottom wall of the water receiving tray is provided with a drain port to discharge the defrost water received in the water receiving tray to the outside of the box body.

9. The refrigerator according to claim 8, characterized in that: A partition plate is arranged in the water receiving tray to divide the water receiving tray into a first water receiving space corresponding to the evaporator and a second water receiving space corresponding to the heat conducting housing.

10. The refrigerator according to claim 8, characterized in that: The bottom wall of the water receiving tray is inclined downward from the evaporator toward the heat-conducting housing.

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