Refrigeration device

Abstract

The utility model provides a refrigerating device which comprises a box body forming a shell outside the refrigerating device. The refrigerator container is arranged in the refrigerator body, and a refrigeration chamber is arranged in the refrigerator container; the refrigeration air duct comprises a top air duct arranged at the top of the refrigeration chamber, and an air inlet is formed in the bottom wall of the top air duct; the back air duct is arranged on the back of the refrigeration chamber, and the top of the back air duct communicates with the rear end of the back air duct; an air outlet part is formed at the lower end of the back air duct, air outlets are formed in the bottom surface of the air outlet part, and the multiple air outlets are transversely distributed at intervals along the rear wall of the refrigerator liner; the evaporator is arranged in the top air duct; the heating piece is arranged in the air outlet part, and the heating piece is located above the air outlet; and the fan is arranged in the top air duct and located at the air inlet, the fan is arranged on the front side of the evaporator, and the fan is configured in the mode that when the fan runs, the fan extracts air in the refrigeration chamber through the air inlet, the air enters the top air duct, flows to the back air duct and then is conveyed into the refrigeration chamber through the multiple air outlets.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration appliance technical field, mainly relates to a refrigeration device. BACKGROUND

[0002] The refrigerator is a kind of equipment for storing goods at constant low temperature, which is widely used in contemporary life or industrial production. A refrigeration compartment is constructed in the refrigerator, and a refrigeration environment is formed in the refrigeration compartment for placing and storing goods.

[0003] At present, by setting evaporator in air duct, and using fan to transport air flow through evaporator to refrigeration compartment, to realize refrigeration of refrigeration compartment.

[0004] However, with the improvement of living standards and the change of consumption habits, people's functional needs for refrigerator are also increasingly diversified. In some specific scenarios, such as winter cold regions, users may wish to have the ability to quickly thaw or heat specific foods while maintaining the basic refrigeration function of the refrigerator. However, in the refrigerator with heating function, it is difficult to balance the compactness of the structure due to the need to add a heating element in the air duct, inevitably occupying the storage space inside the refrigerator. INVENTION CONTENTS

[0005] Based on the prior art, a refrigeration device with heating function and compact air duct structure is provided.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] One aspect of the application provides a refrigeration device, comprising a cabinet forming the shell of the refrigeration device; a tank arranged in the cabinet, the tank is provided with a refrigeration compartment; a refrigeration air duct arranged in the tank, the refrigeration air duct comprises: a top air duct arranged at the top of the refrigeration compartment, a bottom wall of the top air duct is provided with an air inlet; a back air duct arranged at the back of the refrigeration compartment, the top of the back air duct is communicated with the rear end of the back air duct; the lower end of the back air duct forms an air outlet portion, the bottom surface of the air outlet portion is provided with an air outlet, and a plurality of air outlets are distributed transversely along the rear wall of the tank; an evaporator arranged in the top air duct; a heating element arranged in the air outlet portion, the heating element is located above the air outlet; a fan arranged in the top air duct and located at the air inlet, the fan is arranged on the front side of the evaporator, and the fan is configured to: when running, the fan draws air in the refrigeration compartment into the top air duct through the air inlet, and flows to the back air duct, and then is transported to the refrigeration compartment through a plurality of air outlets.

[0008] The technical scheme has the following advantages or beneficial effects: in the technical scheme, the refrigeration air duct is arranged as a top air duct extending along the top of the refrigeration compartment and a back air duct arranged along the back of the refrigeration compartment, thereby making full use of the transverse space at the top of the box body and the longitudinal space extending along the back near the top, reducing the planar occupation of the storage space by the air duct, and optimizing the air flow path. Further, the evaporator and the heating element are integrated in the refrigeration air duct, specifically, the evaporator is arranged in the space of the top air duct to make full use of the space of the top air duct, and the heating element is integrated in the air outlet part of the back air duct to make full use of the lower end space of the back air duct. In this way, the top and back spaces inside the refrigeration compartment can be effectively utilized, and the planar occupation of the storage space in the refrigeration compartment by the refrigeration air duct is reduced. Compared with the prior art, in which the heater is arranged at the top to occupy more top space, or the air duct is extended along the back to occupy the back space as a refrigeration and heating air duct, the air duct design of the technical scheme not only shares the air duct system and fan for heating and refrigeration, reducing the complexity and redundancy of the system, but also has the advantages of compact structure, making full use of the transverse and longitudinal space in the box body, and improving the storage space of the product.

[0009] In some embodiments of the present application, a refrigeration device is provided, wherein the heating element is in a strip shape, and the length direction of the heating element is arranged transversely along the back wall of the box body and is consistent with the arrangement direction of the plurality of air outlets.

[0010] Another technical scheme in the above technical scheme has the following advantages or beneficial effects: by arranging the length direction of the heating element transversely along the back wall of the box body, the transverse space of the air outlet part can be fully utilized. At the same time, the length direction of the heating element can be consistent with the transverse arrangement direction of the air outlets, so that the heating area matches the distribution of the air outlets. Compared with point heating or small-area heating, the strip-shaped heating element can more effectively cover and heat the air flowing near it, thereby improving the heating efficiency. Moreover, the strip-shaped heating element can cover the upstream area of multiple air outlets, so that the air flows output by the multiple air outlets all flow through the surface of the heating element, thereby improving the heating uniformity of the air outlet.

[0011] In some embodiments of the present application, a refrigeration device is provided, wherein the air outlet part includes a vertical extension plate arranged vertically along the back wall of the box body, the vertical extension plate is arranged on the front side of the back wall of the box body at intervals; a transverse extension plate is arranged by bending and extending the lower end of the vertical extension plate towards the back wall of the box body, the rear end of the transverse extension plate abuts against the back wall of the box body, and the transverse extension plate is provided with a plurality of air outlets; and the heating element is arranged at the back of the vertical extension plate, and the length direction of the heating element is consistent with the transverse extension direction of the transverse extension plate.

[0012] Another technical solution in the above technical solution has the following advantages or beneficial effects: the vertical extension plate is arranged in front of the rear wall of the box body, thereby forming a longitudinal flow guide channel, so that the airflow passing through the top of the box body flows downward along the vertical direction at the rear end, reducing turbulence. The transverse extension plate is connected between the rear wall of the box body and the lower end of the vertical extension plate. The transverse extension plate, the vertical extension plate, and the back of the box body form an air outlet channel. By reasonably utilizing the air outlet channel formed by the air outlet part, the heating element is installed in the air outlet channel, and the air outlet part structure is compact.

[0013] In some embodiments of the present application, a refrigeration device is provided, further comprising a support arranged on the back of the vertical extension plate, the front end of the support being connected to the vertical extension plate, and the rear end of the support being connected to the back of the box body; the support comprises two, and the two supports are arranged on the transverse ends of the heating element respectively to support the heating element on the back of the vertical extension plate.

[0014] Another technical solution in the above technical solution has the following advantages or beneficial effects: by connecting the front end of the support to the back of the vertical extension plate and connecting the rear end of the support to the back of the box body, the heating element is arranged on the support, which can stably install the heating element in the air duct. On the other hand, since the support is supported between the back of the vertical extension plate and the back of the box body, the connection strength between the air outlet part and the box body can be improved, so that the whole refrigeration air duct can be stably installed in the box body.

[0015] In some embodiments of the present application, a refrigeration device is provided, the support comprises: a first connecting plate, one plate surface of the first connecting plate is connected to the back of the vertical extension plate; a second connecting plate is arranged by extending backward from the first connecting plate, and the second connecting plate is arranged vertically; a third connecting plate is arranged by extending and bending from the rear end of the second connecting plate, the third connecting plate is arranged in the rear of the first connecting plate, and one plate surface of the third connecting plate is connected to the wall surface of the back of the box body; the transverse ends of the heating element are connected to the second connecting plates of the two supports respectively.

[0016] Another technical solution in the above technical solution has the following advantages or beneficial effects: by connecting the first connecting plate to the back of the vertical extension plate and connecting the third connecting plate to the back of the box body, not only a tight connection can be formed to provide a stable support structure, but also the protruding and uneven parts in the air duct can be reduced, the resistance encountered by the airflow when passing through the air duct can be reduced, and the stability of the airflow transportation in the air duct can be improved. The vertically arranged second connecting plate has less resistance in the airflow direction, and can also reduce the additional wind resistance caused by the vortex generated by the airflow on the support structure, further improving the smoothness of the airflow flow.

[0017] In some embodiments of the present application, a refrigeration device is provided, further comprising a duct shell arranged in the cabinet, the duct shell comprising: an upper duct shell part arranged at the top of the cabinet, the upper duct shell part and the top wall of the cabinet forming the top duct; and a rear duct shell part bent downwardly from the rear end of the upper duct shell part, the rear duct shell part and the rear wall of the cabinet forming the rear duct, and the lower end of the rear duct shell part being connected to the upper end of the vertically extending plate.

[0018] Another technical solution in the above technical solution has the following advantages or beneficial effects: the rear end of the upper duct shell part is arranged spaced apart from the rear wall of the cabinet, and the rear duct shell part is arranged extending downwardly from the rear end of the upper duct shell part, so that the installation and arrangement of the duct shell can make full use of the horizontal and vertical space at the top of the cabinet. On the one hand, the evaporator can be installed in the top duct, and the heater can be installed at the air outlet portion at the lower end of the rear duct, thereby making full use of the space inside the duct shell, so that the key components such as the evaporator and the heating element can be compactly arranged inside the refrigeration duct. Compared with the current structure that needs to increase the heating element at the top and thus increase the space of the top duct, or set an extended duct in the rear duct to install the heating element, which occupies most of the space at the rear of the cabinet, the present technical solution installs the evaporator at the top of the cabinet and installs the heating element using the space at the rear of the cabinet close to the top, which can improve the arrangement space of the refrigeration device in the depth direction.

[0019] In some embodiments of the present application, a refrigeration device is provided, further comprising a water baffle arranged at the rear end of the upper duct shell part, the water baffle extending horizontally, the lower end of the water baffle being connected to the bottom wall of the upper duct shell part, and the upper end of the water baffle extending upwardly.

[0020] Another technical solution in the above technical solution has the following advantages or beneficial effects: by protrudingly arranging the water baffle at the rear end of the upper duct shell part and extending horizontally along the rear end of the upper duct shell part, the condensed water generated during the operation of the evaporator can be prevented from directly overflowing backward through the connection between the upper duct shell part and the rear duct shell part and flowing to the rear duct and the air outlet portion at the rear end, so as to prevent the condensed liquid from affecting the operation of the heating element, and improve the safety of the product in use.

[0021] In some embodiments of the present application, a refrigeration device is provided, further comprising a support rib arranged at the back of the water baffle, the support rib extending downwardly in the vertical direction, the upper end of the support rib being connected to the water baffle, and the lower end of the support rib being connected to the back of the rear duct.

[0022] Another technical scheme in the above technical scheme has the following advantages or beneficial effects: since the water baffle protrudingly arranged on the bottom wall of the upper air duct shell is easily impacted and loaded by air flow, condensate and other factors, by arranging the supporting rib on the back of the water baffle, the supporting rib is arranged extending downward in the vertical direction, the upper end is closely connected with the water baffle, and the lower end is connected with the back of the back air duct, so that a stable supporting structure can be formed between the supporting rib and the water baffle, and the water baffle is firmly supported on the back air duct.

[0023] In some embodiments of the present application, a refrigeration device is provided, and the bottom of the evaporator is arranged spaced apart from the bottom wall of the upper air duct shell to form a gap; the air duct shell further comprises a baffle plate arranged below the evaporator, the lower end of the baffle plate is connected with the bottom wall of the upper air duct shell, and the upper end of the baffle plate extends and is arranged towards the bottom of the side close to the evaporator of the fan; the baffle plate is used to shield the gap.

[0024] Another technical scheme in the above technical scheme has the following advantages or beneficial effects: the baffle plate is arranged below the evaporator and on the front side of the evaporator, so as to shield the gap formed between the evaporator and the upper air duct shell, thereby playing a shielding role on the gap, preventing the air flow from directly flowing to the back air duct through the gap and affecting the refrigeration efficiency of the air flow, and enabling the air flow to flow through the evaporator as much as possible for effective heat exchange process.

[0025] In some embodiments of the present application, a refrigeration device is provided, and in the front-to-back direction of the upper air duct shell, the upper end of the baffle plate is inclinedly arranged towards the side close to the evaporator.

[0026] Another technical scheme in the above technical scheme has the following advantages or beneficial effects: since the air flow direction of the top air duct is from front to back and then downward, the upper end of the baffle plate is inclinedly arranged towards the rear, i.e. the upper end of the baffle plate is inclinedly arranged towards the side close to the evaporator, which can reduce the resistance of the air flow flowing in the top air duct, reduce the turbulence and vortex generated when the air flow passes through the baffle plate, and is conducive to rapid delivery of the air flow. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.

[0028] Figure 1 FIG. 1 is a schematic view of a refrigeration device according to an embodiment of the present application;

[0029] Figure 2 FIG. 2 is a schematic view of a refrigeration air duct according to the refrigeration device of FIG. 1; Figure 1

[0030] Figure 3 ​for Figure 2 An exploded view;

[0031] Figure 4 for Figure 2 A cross-sectional view;

[0032] Figure 5 for Figure 2 A magnified view of a portion at point C;

[0033] Figure 6 for Figure 2 Schematic diagram of the center air outlet;

[0034] Figure 7 for Figure 4 A three-dimensional schematic diagram of the central support component;

[0035] Figure 8 for Figure 4 A schematic diagram of the middle support component from another perspective;

[0036] Figure 9 for Figure 3 A schematic diagram of the stroke duct shell;

[0037] Figure 10 for Figure 4 A magnified view of a portion at point A;

[0038] Figure 11 for Figure 4 A magnified view of a portion at point B;

[0039] The correspondence between the reference numerals and the component names is as follows:

[0040] 1. Box body;

[0041] 2. Shelf liner; 201. Refrigeration compartment; 21. Top wall; 22. Rear wall;

[0042] 301. Cooling air duct; 3011. Top air duct; 3012. Rear air duct; 302. Air inlet; 303. Air outlet; 304. Gap; 305. Air guide channel; 306. Air outlet channel; 307. Air vent

[0043] 3. Air duct shell; 31. Upper air duct shell; 32. Rear air duct shell; 33. Air outlet; 331. Vertical extension plate; 332. Horizontal extension plate; 34. Support component; 341. First connecting plate; 342. Second connecting plate; 343. Third connecting plate; 35. Water baffle; 36. Support rib; 37. Baffle plate; 38. Enclosure plate;

[0044] 4. Evaporator;

[0045] 5. Heating element; 51. PTC heating element; 52. Multiple heat dissipation fins;

[0046] 6. The fan. DETAILED DESCRIPTION

[0047] The utility model provides a refrigeration device, for the purpose, technical scheme and effect of the utility model are more clear, explicit, the following refers to the drawing and raises example to the utility model further detailed explanation. It should be understood that the specific embodiment described here is only used to explain the utility model, and is not used to limit the protection scope of the utility model.

[0048] In the description of the utility model, it needs to be understood that the orientation or position relation indicated by the terms "upper", "lower", "inner", "outer" and the like is based on the orientation or position relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it can not be understood as a limitation on the utility model.

[0049] In the description of the utility model, it needs to be understood that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, or electrical connection or can communicate with each other, can be direct connection, or indirect connection through intermediate medium, can be the communication or interaction relationship between two elements inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0050] The refrigeration device in the embodiment of the application can be a refrigeration cabinet such as a refrigerator or a freezer, and the technical scheme of the improved refrigeration device of the embodiment of the application will be described in detail below with the refrigerator as an example.

[0051] Figure 1 It is a schematic view of the refrigeration device of an embodiment of the application.

[0052] As shown in Figure 1 The refrigerator provided by the embodiment of the application can include a cabinet 1. The cabinet 1 can adopt a hollow structure such as a cuboid. The cabinet 1 forms the outer shell of the refrigerator. It should be noted that the cabinet 1 can also adopt a hollow shell structure of other shapes.

[0053] As shown in Figure 1 The inside of the cabinet 1 can form a refrigeration compartment 201 with an open front side in some embodiments. The refrigeration compartment 201 can be provided in multiple.

[0054] As shown in Figure 1 In some embodiments, the refrigerator can include a tank 2. The tank 2 can be arranged in the cabinet 1. The tank 2 can be provided with a refrigeration compartment 201.

[0055] In some embodiments, the container body 2 can include a top wall 21. The top wall 21 is arranged at the top of the container body 2.

[0056] In some embodiments, the container body 2 can include a back wall 22. The back wall 22 can be arranged at the back of the container body 2. The upper end of the back wall 22 can be connected to the rear end of the top wall 21. The back wall 22 can be arranged opposite to the door body.

[0057] In some embodiments, the refrigeration compartments 201 can be provided in multiple.

[0058] In some embodiments, the refrigeration compartments 201 can be used as independent storage spaces, such as a freezing compartment, a refrigerating compartment, and a variable temperature compartment, etc. to meet different refrigeration requirements such as freezing, refrigerating, and variable temperature according to different food types, and to store items that need to be refrigerated or frozen. The multiple refrigeration compartments 201 can be arranged in an up-down or left-right manner.

[0059] In some embodiments, the refrigerator can include a door body (not shown in the figure). The door body can be hinged to the front side of the cabinet 1 to open and close the refrigeration compartments 201.

[0060] In some embodiments, the door body can be provided in multiple. The door body can be arranged one-to-one with the refrigeration compartments 201. Multiple door bodies can simultaneously open and close one refrigeration compartment 201. One door body can also simultaneously open and close multiple refrigeration compartments 201.

[0061] In some embodiments, the refrigerator can include a refrigeration system. The refrigeration system can be arranged inside the cabinet 1. The refrigeration system can be used to provide cold air inside the refrigerator to maintain a low-temperature environment in each refrigeration compartment 201.

[0062] In some embodiments, the refrigeration system can include a compressor (not shown in the figure). The compressor can be used as a power source for the refrigeration cycle. It sucks in low-temperature and low-pressure refrigerant gas and compresses it into high-temperature and high-pressure gas. The compressor can deliver high-temperature and high-pressure refrigerant to the condenser.

[0063] In some embodiments, the refrigeration system can include a condenser (not shown in the figure). The condenser can be used to receive the refrigerant flowing out of the compressor, and can cool and convert the high-temperature and high-pressure refrigerant gas from the compressor into a liquid state. The condenser can transfer heat from the refrigerant to the surrounding air to reduce the temperature of the refrigerant.

[0064] In some embodiments, the refrigeration system can include a throttling device (not shown in the figure). The condenser can deliver the condensed refrigerant to the throttling device. The throttling device can be a capillary tube. The throttling device can be used to throttle and depressurize the refrigerant.

[0065] Figure 2 for Figure 1 A schematic diagram of the cooling air duct.

[0066] like Figure 2 As shown, in some embodiments, the refrigeration system may include an evaporator 4. A throttling device can deliver throttled and depressurized refrigerant into the evaporator 4. The evaporator 4 can be used for refrigerant vapor to evaporate and boil, thereby absorbing heat from the surrounding medium.

[0067] In some embodiments, the compressor, condenser, throttling device, and evaporator 4 can be connected in sequence to form a refrigeration circuit. The refrigerant can circulate within the refrigeration circuit to achieve refrigeration of the interior of the housing 1.

[0068] like Figure 2 As shown, in some embodiments, the refrigeration system may include a refrigeration duct 301. The refrigeration duct 301 may be disposed inside the liner 2. The evaporator 4 may be disposed inside the refrigeration duct 301. The refrigeration duct 301 may communicate with the refrigeration chamber 201 to deliver the cold airflow formed by the evaporator 4 to the refrigeration chamber 201, thereby realizing the low-temperature storage function in the refrigeration chamber 201.

[0069] Figure 3 for Figure 2 An exploded view; Figure 4 for Figure 2 A cross-sectional view.

[0070] like Figure 3 and Figure 4 As shown, in some embodiments, the cooling duct 301 may include a top duct 3011. The top duct 3011 may be located at the top of the cooling chamber 201. An air inlet 302 may be provided on the bottom wall of the top duct 3011. The evaporator 4 may be located within the top duct 3011. The air inlet 302 may connect the cooling chamber 201 with its top area. Thus, air from the cooling chamber 201 can enter the top duct 3011 through the air inlet 302, and then flow through the evaporator 4 for cooling to form cold air.

[0071] like Figure 3 As shown, in some embodiments, the cooling duct 301 may include a rear air duct 3012. The rear air duct 3012 may be located at the rear of the cooling compartment 201. The top of the rear air duct 3012 may be connected to its rear end. In this way, the cooling duct 301 can flow from the top to the back of the cooling compartment 201, efficiently utilizing the horizontal space at the top and the vertical space at the back of the cooling compartment 201, reducing the floor plan occupied by the air duct on the storage space, and optimizing the airflow path.

[0072] In some embodiments, the cooling duct 301 may have an L-shaped structure.

[0073] like Figure 4 As shown, in some embodiments, an air outlet 33 may be formed at the lower end of the rear air duct 3012. An air outlet 303 may be provided on the bottom surface of the air outlet 33. Multiple air outlets 303 may be distributed laterally at intervals along the rear wall 22 of the refrigerator liner 2. By providing multiple air outlets 303 on the bottom surface of the air outlet 33, airflow can be directed towards the cooling compartment 201 from the lower end. Furthermore, the arrangement of multiple air outlets 303 laterally at intervals along the rear wall 22 of the refrigerator liner 2 allows for more uniform airflow within the cooling compartment 201, enabling cold air to cover the entire cooling compartment 201 more quickly, thereby shortening the time to reach the target temperature and improving the refrigerator's cooling efficiency.

[0074] It should be noted that the lateral direction mentioned in the above embodiments can refer to the extension direction of the refrigeration chamber 201 in the left-right direction. The vertical direction mentioned in the above embodiments can refer to the extension direction of the refrigeration chamber 201 in the height direction.

[0075] like Figure 1 and Figure 2 As shown, in some embodiments, the lower end of the back air duct 3012 may be located above the middle of the refrigeration chamber 201. This means that the back air duct 3012 does not extend vertically along the entire back of the liner 2. This not only improves the path of airflow from the duct downwards to the refrigeration chamber 201, thereby increasing the refrigeration efficiency of the refrigeration chamber 201, but also reduces the space occupied by the refrigeration chamber 201, thus increasing the product storage space of the refrigeration chamber 201.

[0076] like Figure 2 As shown, in some embodiments, the refrigerator may include a heating element 5. The heating element 5 may be disposed within the air outlet 33. The heating element 5 may be located above the air outlet 303. When the heating element 5 is working, it can heat the airflow at the air outlet 303, thereby forming hot air that flows into the cooling compartment 201 through the air outlet 303.

[0077] like Figure 2 As shown, in some embodiments, the cooling duct 301 may include a fan 6. The fan 6 may be located within the top duct 3011 and at the air inlet 302. The fan 6 may be located in front of the evaporator 4. The fan 6 may be configured such that, when operating, the fan 6 draws air from the cooling chamber 201 through the air inlet 302 into the top duct 3011, flows to the back duct 3012, and then delivers it to the cooling chamber 201 through multiple air outlets 303.

[0078] In the technical solution of the present application, the refrigeration air duct 301 is arranged as a top air duct 3011 extending along the top of the refrigeration compartment 201 and a back air duct 3012 arranged along the back of the refrigeration compartment 201, thereby making full use of the transverse space at the top of the box body 2 and the longitudinal space extending along the back arranged near the top, reducing the planar occupation of the storage space by the air duct, and optimizing the airflow path. Further, the evaporator 4 and the heating element 5 are integrally arranged in the refrigeration air duct 301, specifically, the evaporator 4 is arranged in the space of the top air duct 3011, thereby making full use of the space of the top air duct 3011, and the heating element 5 is integrated in the air outlet part 33 of the back air duct 3012, thereby making full use of the lower end space of the back air duct 3012. In this way, the top and back spaces inside the refrigeration compartment 201 can be effectively utilized, and the planar occupation of the storage space in the refrigeration compartment 201 by the refrigeration air duct 301 can be reduced. Compared with the prior art, in which the heater is arranged at the top so that the air duct occupies more top space, or the air duct is extended along the back so as to occupy the back space as a refrigeration and heating air duct, the air duct design of the present technical solution not only makes the heating and refrigeration share the air duct system and the fan 6, reduces the complexity and redundancy of the system, but also has the advantages of compact structure, makes full use of the transverse and longitudinal space in the box body 2, and improves the storage space of the product.

[0079] In some embodiments, when the refrigerator needs to be refrigerated, the evaporator 4 can be controlled to start working, and the heating element 5 can be controlled to stop working, thereby realizing the refrigeration process of the refrigerator. When the refrigerator needs to be heated, the heating element 5 can be controlled to start working, and the evaporator 4 can be controlled to stop working, thereby realizing the heating process of the refrigerator.

[0080] In some embodiments, the heating element 5 can adopt a PTC heater.

[0081] Figure 5 For Figure 2 A local enlarged view of C in FIG. 6 is shown.

[0082] As Figure 5 shown, in some embodiments, the PTC heating element 5 can include a PTC heating element 51 and a plurality of heat dissipation fins 52. The plurality of heat dissipation fins 52 are arranged at intervals on the PTC heating element 51.

[0083] In some embodiments, the heat dissipation fins can be arranged along the vertical direction of the back air duct 3012. The plurality of heat dissipation fins 52 can be arranged at intervals along the transverse direction of the two ends of the heating element 5. In this way, the resistance of the airflow passing through the heating element 5 can be further reduced, thereby improving the efficiency of the airflow in the air duct.

[0084] In other embodiments, the heating element 5 can adopt a heating film, a metal tubular heater, etc.

[0085] As Figure 3As shown, in some embodiments, the heating element 5 can be in a strip shape. The length direction of the heating element 5 can be arranged transversely along the rear wall 22 of the box body 2. The length direction of the heating element 5 can be consistent with the arrangement direction of the plurality of air outlets 303.

[0086] By arranging the length direction of the heating element 5 transversely along the rear wall 22 of the box body 2, the transverse space of the air outlet part 33 can be fully utilized. At the same time, the length direction of the heating element 5 is consistent with the transverse arrangement direction of the air outlets 303, so that the heating area matches the distribution of the air outlets 303. Compared with point heating or small-area heating, the strip-shaped heating element 5 can more effectively cover and heat the air flowing through its vicinity, thereby improving the heating efficiency. Moreover, the strip-shaped heating element 5 can cover the upstream area of the plurality of air outlets 303, so that the air flows output by the plurality of air outlets 303 all flow through the surface of the heating element 5, thereby improving the heating uniformity of the air outlet.

[0087] Figure 6 For Figure 2 a schematic view of the air outlet part.

[0088] As Figure 6 shown, in some embodiments, the air outlet part 33 can include a vertical extension plate 331. The vertical extension plate 331 can be arranged vertically extending along the rear wall 22 of the box body 2. The vertical extension plate 331 can be arranged spaced apart on the front side of the rear wall 22 of the box body 2. The vertical extension plate 331 is arranged spaced apart on the front side of the rear wall 22 of the box body 2, thereby forming a longitudinal flow guide channel 305, so that the air flow passing through the top of the box body 2 flows downward along the vertical direction at the rear end, reducing turbulence.

[0089] As Figure 4 and Figure 6 shown, in some embodiments, the air outlet part 33 can include a transverse extension plate 332. The transverse extension plate 332 can be arranged by bending and extending from the lower end of the vertical extension plate 331. The rear end of the transverse extension plate 332 can abut the rear wall 22 of the box body 2, and the transverse extension plate 332 can be provided with a plurality of air outlets 303. The heating element 5 can be arranged on the back of the vertical extension plate 331. The length direction of the heating element 5 can be consistent with the transverse extension direction of the transverse extension plate 332.

[0090] The transverse extension plate 332 is connected between the rear wall 22 of the box body 2 and the lower end of the vertical extension plate 331, and the transverse extension plate 332, the vertical extension plate 331 and the back of the box body 2 form an air outlet channel. By reasonably utilizing the air outlet channel formed by the air outlet part 33, the heating element 5 is arranged in the air outlet channel, so that the air outlet part 33 is compact in structure.

[0091] As Figure 6As shown, in some embodiments, a plurality of air outlets 303 can be arranged on the transversely extending plate 332. The plurality of air outlets 303 can be arranged at intervals along the length direction of the transversely extending plate 332.

[0092] Specifically, the air outlets 303 are arranged on the transversely extending plate 332 and are arranged at intervals in the transverse direction along the rear wall 22 of the liner 2. Heat can be uniformly transferred to the air outlets 303 in the transverse direction, so that cold air or hot air can be more uniformly distributed inside the refrigeration compartment 201, reducing local temperature difference and avoiding local overheating or uneven heating, thereby improving the refrigeration or heating effect.

[0093] As shown, Figure 4 in some embodiments, the refrigerator can include a support 34. The support 34 can be arranged at the back of the vertically extending plate 331. The support 34 is used to support the heating element 5.

[0094] As shown, Figure 4 in some embodiments, the front end of the support 34 can be connected with the vertically extending plate 331. The rear end of the support 34 can be connected with the back of the liner 2. By connecting the front end of the support 34 with the back of the vertically extending plate 331 and connecting the rear end of the support 34 with the back of the liner 2, and arranging the heating element 5 on the support 34, the heating element 5 can be stably installed in the air duct. On the other hand, since the support 34 is supported between the back of the vertically extending plate 331 and the back of the liner 2, the connection strength between the air outlet portion 33 and the liner 2 can be improved, so that the whole refrigeration air duct 301 can be stably installed in the cabinet 1.

[0095] As shown, Figure 3 in some embodiments, the support 34 can include two. The two supports 34 can be arranged on the transverse ends of the heating element 5, respectively, to support the heating element 5 on the back of the vertically extending plate 331.

[0096] Specifically, the two supports 34 are arranged on the transverse ends of the heating element 5, respectively, so that the heating element 5 can be uniformly supported on the back of the vertically extending plate 331, which is conducive to avoiding the bending or deformation of the heating element 5 due to uneven stress.

[0097] Figure 7 For Figure 4 a perspective view of the support; Figure 8 for Figure 4 a schematic view of the support from another perspective.

[0098] As shown, Figure 7 and Figure 8 in some embodiments, the support 34 can include a first connecting plate 341. One plate surface of the first connecting plate 341 can be connected with the back of the vertically extending plate 331.

[0099] The first connecting plate 341 can be in the form of a plate. The first connecting plate 341 has two oppositely arranged plate surfaces, which can be arranged on the front and back of the first connecting plate 341. The plate surface on the front side of the first connecting plate 341 is connected to the back of the vertically extending plate 331. This not only forms a tight connection and provides a stable support structure, but also reduces the protrusions and uneven parts in the air duct, reduces the resistance encountered by the airflow when passing through the air duct, and is conducive to the stability of the airflow transportation in the air duct.

[0100] As shown in Figure 3 and Figure 7 , in some embodiments, the support 34 can include a second connecting plate 342. The second connecting plate 342 can be arranged by extending the first connecting plate 341 backward. The second connecting plate 342 can be arranged vertically.

[0101] The second connecting plate 342 can be in the form of a plate. Compared with the horizontally or obliquely arranged support structure, the vertically arranged second connecting plate 342 causes less resistance in the direction of the airflow, and also reduces the additional wind resistance caused by the vortex generated by the airflow on the support structure, further improving the smoothness of the airflow flow. On the other hand, the arrangement of the second connecting plate 342 can also enhance the stability of the air duct structure. The vertically arranged support structure can better resist vibration and deformation caused by airflow impact, thereby maintaining the stability and reliability of the air duct internal components.

[0102] As shown in Figure 3 and Figure 7 , in some embodiments, the support 34 can include a third connecting plate 343. The third connecting plate 343 can be arranged by extending and bending the rear end of the second connecting plate 342. The third connecting plate 343 can be arranged at intervals behind the first connecting plate 341. One plate surface of the third connecting plate 343 can be connected to the wall surface on the back of the cabinet 1.

[0103] The third connecting plate 343 can be in the form of a plate. The third connecting plate 343 has two oppositely arranged plate surfaces, which can be arranged on the front and back of the third connecting plate 343. The plate surface on the back side of the third connecting plate 343 is connected to the back of the cabinet 2. This not only forms a tight connection and provides a stable support structure, but also reduces the protrusions and uneven parts in the air duct, reduces the resistance encountered by the airflow when passing through the air duct, and is conducive to the stability of the airflow transportation in the air duct.

[0104] As shown in Figure 3As shown, in some embodiments, the two lateral ends of the heating element 5 can be connected to the second connecting plates 342 of the two side support members 34, thereby improving the stability of the heating element 5 within the air duct.

[0105] like Figure 3 and Figure 7 As shown, in some embodiments, the first connecting plate 341 can extend to the left from the front end of the second connecting plate 342. The third connecting plate 343 can extend to the right from the rear end of the second connecting plate 342. When installing the heating element 5 and the support member 34, the heating element 5 can be fixed to the second connecting plate 342 first, then the third connecting plate 343 can be installed on the back of the box liner 2, then the air outlet 33 can be covered on the front side of the heating element 5, and the first connecting plate 341 can be connected to the vertical extension plate 331 of the air outlet 33, thereby completing the installation of the air outlet 33 and the heating element. This installation structure is simple and compact, and can improve the airflow conveying efficiency inside the air duct.

[0106] In some other embodiments, the support member 34 may be arched in shape. The first connecting plate 341 and the third connecting plate 343 may be disposed on opposite sides of the second connecting plate 342, and the first connecting plate 341 and the third connecting plate 343 may extend in the same direction.

[0107] Figure 9 for Figure 3 A schematic diagram of the stroke duct shell;

[0108] like Figure 1 and Figure 9 As shown, in some embodiments, the cooling duct 301 may include a duct shell 3. The duct shell 3 may be disposed inside the box liner 2. The duct shell 3 may be formed by enclosing the cooling duct 301 with the inner wall of the box liner 2.

[0109] like Figure 9 As shown, in some embodiments, the air duct housing 3 may include an upper air duct housing 31. The upper air duct housing 31 may be disposed on the top of the inner chamber 2. The upper air duct housing 31 and the top wall 21 of the inner chamber 2 may be enclosed to form a top air duct 3011. An air inlet 302 may be provided on the bottom wall of the upper air duct housing 31. In this way, the space at the top of the inner chamber 2 can be utilized, and a specific top air duct 3011 can be formed by the top of the inner chamber 2 and the upper air duct housing 31. When the fan 6 is started, the air in the refrigeration chamber 201 can enter the top air duct 3011 through the air inlet 302.

[0110] like Figure 9As shown, in some embodiments, the air duct shell 3 may include a rear air duct shell 32. The rear air duct shell 32 may be bent downward from the rear end of the upper air duct shell 31. The rear air duct shell 32 and the rear wall 22 of the box liner 2 may be enclosed to form a back air duct 3012. The lower end of the rear air duct shell 32 may be connected to the upper end of the vertical extension plate 331.

[0111] In this design, the rear end of the upper air duct shell 31 is spaced apart from the rear wall 22 of the inner box 2, and the rear air duct shell 32 extends downward from the rear end of the upper air duct shell 31, making the overall air duct shell 3 L-shaped. This allows the air duct shell 3 to fully utilize the horizontal and vertical space at the top of the inner box 2. On one hand, the evaporator 4 can be installed inside the top air duct 3011, and the heater can be installed at the air outlet 33 at the lower end of the rear air duct 3012, thus fully utilizing the internal space of the air duct shell 3. This allows key components such as the evaporator 4 and the heating element 5 to be compactly arranged inside the refrigeration air duct 301. Compared to the current structure that requires adding a heating element 5 at the top, thus increasing the air duct space at the top, or extending the air duct 3012 at the back to install the heating element 5, which occupies most of the space at the back of the inner box 2, this technical solution installs the evaporator 4 at the top of the inner box 2 and utilizes the space near the top at the back of the inner box 2 to install the heating element 5, thereby increasing the depth space of the refrigeration unit.

[0112] On the other hand, the upper end of the vertical extension plate 331 of the air outlet 33 is connected to the lower end of the rear-mounted housing, which simplifies the installation and connection structure. Specifically, the heating element 5 can be installed and connected inside the air outlet 33 first, and then the air outlet 33 and the support member 34 connected to the heating element 5 are installed in the housing liner 2. The air duct housing 3 is then installed inside the housing liner 2 and connected to the air outlet 33, making the entire installation structure simpler.

[0113] In some embodiments, the upper air duct housing 31 and the rear air duct housing 32 can be integrally formed.

[0114] like Figure 9 As shown, in some embodiments, the connection between the upper air duct housing 31 and the rear air duct housing 32 can be a rounded transition. This can further reduce the resistance to airflow moving from the lateral to the vertical direction.

[0115] like Figure 9 As shown, in some embodiments, the upper air duct housing 31 may be provided with two air inlets 302. Two fans 6 may be included. The two fans 6 may be spaced apart on the upper air duct housing 31, thereby increasing the air intake volume.

[0116] Figure 10 for Figure 4 A magnified view of a portion at point A.

[0117] As shown in Figure 4 and Figure 10 in some embodiments, the air duct shell 3 can include a water baffle 35. The water baffle 35 can be arranged at the rear end of the upper air duct shell piece 31. The water baffle 35 can extend transversely. The lower end of the water baffle 35 can be connected to the bottom wall of the upper air duct shell piece 31. The upper end of the water baffle 35 can extend upward.

[0118] Since the evaporator 4 is prone to produce condensate water during operation, by protrudingly arranging the water baffle 35 at the rear end of the upper air duct shell piece 31 and extending transversely along the rear end of the upper air duct shell piece 31, the condensate water can be prevented from directly overflowing from the connection between the upper air duct shell piece 31 and the rear air duct shell piece 32 to the rear end of the back air duct 3012 and the air outlet portion 33, so as to prevent the condensate from affecting the operation of the heating piece 5, and improve the safety of the product in use.

[0119] As shown in Figure 4 and Figure 10 in some embodiments, the evaporator 4 can be arranged at the front side of the water baffle 35. In this way, the water baffle 35 is arranged at the rear end of the evaporator 4, so that all the condensate water produced by the evaporator 4 can drip on the front side of the water baffle 35, and the condensate produced by the evaporator 4 can be prevented from flowing into the back air duct 3012.

[0120] As shown in Figure 9 in some embodiments, the water baffle 35 can be in a plate shape.

[0121] As shown in Figure 10 in some embodiments, in the front-to-rear direction of the cabinet 1, the upper end of the water baffle 35 is arranged obliquely away from the side of the evaporator 4. In this way, the water baffle 35 can be arranged obliquely on the bottom wall of the upper air duct shell piece 31, and obliquely rearward from bottom to top. Since the flow direction of the air flow is first from front to rear, and then downward, the upper end of the water baffle 35 is arranged away from the side of the evaporator 4, which can reduce the resistance of the air flow in the top air duct 3011, reduce the turbulence and vortex generated when the air flow passes through the water baffle 35, and facilitate the rapid delivery of the air flow.

[0122] In other embodiments, the water baffle 35 can be arranged vertically on the bottom wall of the upper air duct shell piece 31. The upper end of the water baffle 35 can extend vertically upward.

[0123] In other embodiments, the water baffle 35 can be in other shapes of protruding rib structures. In this way, the water baffle 35 can also play a role in blocking the condensate water.

[0124] As shown in Figure 9As shown, in some embodiments, the air duct shell 3 can comprise a support rib 36. The support rib 36 can be disposed at the back of the baffle 35. The support rib 36 can be arranged extending downward in the vertical direction. The upper end of the support rib 36 can be connected with the baffle 35. The lower end of the support rib 36 can be connected with the back of the back air duct 3012.

[0125] Wherein, as the baffle 35 protrusively disposed on the bottom wall of the upper air duct shell 31 is easily impacted and loaded by various factors such as air flow, condensate, etc., by disposing the support rib 36 at the back of the baffle 35, the support rib 36 is arranged extending downward in the vertical direction, the upper end is closely connected with the baffle 35, and the lower end is connected with the back of the back air duct 3012, so that a stable support structure can be formed between the support rib 36 and the baffle 35, and the baffle 35 is firmly supported on the back air duct 3012.

[0126] As shown, Figure 9 in some embodiments, the support rib 36 can comprise a plurality of support ribs 36, and the plurality of support ribs 36 can be disposed adjacent to each other at intervals along the back of the baffle 35. By disposing the plurality of support ribs 36 adjacent to each other at intervals along the back of the baffle 35, the load of the baffle 35 from external factors such as air flow, condensate, etc. can be more effectively dispersed, and deformation or damage of the baffle 35 can be prevented. The structure of the plurality of support ribs 36 disposed can form a multi-point support, effectively improving the overall structural stability of the air duct shell 3.

[0127] As shown, Figure 9 in some embodiments, a flow guide channel 305 can be formed between any adjacent support ribs 36. The flow guide channel 305 can be arranged extending in the vertical direction of the back air duct 3012. In this way, the space formed between any adjacent support ribs 36, i.e. the flow guide channel 305, is arranged extending in the vertical direction of the back air duct 3012, which is conducive to guiding the air flow to maintain a stable flow state when passing through the back air duct 3012.

[0128] As shown, Figure 4 in some embodiments, the bottom of the evaporator 4 and the bottom wall of the upper air duct shell 31 can be disposed at intervals to form a gap 304. In this way, installation space can be reserved for the evaporator 4 installed on the top of the box body 2, avoiding the bottom of the evaporator 4 directly abutting against the bottom wall of the upper air duct shell 31.

[0129] Figure 11 For Figure 4 a partial enlarged view of B in FIG. 1.

[0130] As shown, Figure 4 and Figure 11As shown, in some embodiments, the air duct shell 3 can comprise a baffle 37. The baffle 37 can be arranged below the evaporator 4. The lower end of the baffle 37 can be connected with the bottom wall of the upper air duct shell 31. The upper end of the baffle 37 can be arranged extending towards the bottom of the side of the evaporator 4 close to the fan 6. The baffle 37 can be used to shield the gap 304.

[0131] Specifically, the baffle 37 is arranged below the evaporator 4 and at the front side of the evaporator 4, so as to shield the gap 304 formed between the evaporator 4 and the upper air duct shell 31, thereby shielding the gap 304 and preventing the air flow from directly flowing through the gap 304 to the back air duct 3012, so as to affect the refrigeration efficiency of the air flow, and enabling the air flow to flow through the evaporator 4 as much as possible to perform an effective heat exchange process.

[0132] As shown in Figs. 1 and 2, Figure 3 and Figure 9 As shown, in some embodiments, a surrounding plate 38 can be arranged in the top air duct. The surrounding plate 38 can be arranged around the periphery of the air inlet 302. The surrounding plate 38 can form a semi-enclosed structure. The evaporator 4 can be arranged at the back side of the surrounding plate 38. The back side of the surrounding plate 38 can be formed with an air outlet 307. The air outlet 307 can be arranged towards the evaporator 4. A part of the evaporator 4 can be arranged at the air outlet 307. In this way, the air in the refrigeration compartment 201 can enter the inside of the surrounding plate 38 through the air outlet 307, and then be blown to a part of the area of the evaporator 4 through the air outlet 307.

[0133] As shown in Figs. 1 and 2, Figure 9 As shown, in some embodiments, the baffle 37 can be arranged at the air outlet 307. The baffle 37 can shield the gap 304.

[0134] In some embodiments, the top of the surrounding plate 38 abuts against the top wall 21 of the box body 2. In this way, the surrounding plate 38, the top wall 21 of the box body 2, the baffle 37 and the upper air duct shell 31 form an enclosed top air duct 3011. When the fan 6 is started, the air in the refrigeration compartment enters the enclosed top air duct 3011 through the air inlet 302. When the air flow flows to the evaporator 4 through the air outlet 307, the baffle 37 can guide the air flow, so that the air flow can flow through the evaporator 4 for heat exchange, and then enter the back air duct 3012. In this process, the surrounding plate 38, the top wall 21 of the box body 2, the baffle 37 and the upper air duct shell 31 form the enclosed top air duct 3011, which can guide the air flow to flow more efficiently to the evaporator 4 and the heating element 5 arranged at the air outlet, thereby improving the air circulation efficiency in the refrigeration air duct 301 and the refrigeration compartment 201.

[0135] As shown in Figs. 1 and 2, Figure 9As shown, in some embodiments, two air inlets 302 can be arranged on the bottom wall of the upper air duct shell 31. Two air fans 6 can be arranged at the air inlets 302 correspondingly. The baffle plates 38 can include two. The two baffle plates 38 can be arranged around the air inlets 302 correspondingly. The baffles 37 can include two, which can be arranged at the air inlets 307 correspondingly.

[0136] In other embodiments, the baffles 37 can be integrally formed. The baffles 37 can extend along one air inlet 307 to another air inlet 307. In this way, the gap 304 formed between the evaporator 4 and the upper air duct shell 31 can also be shielded, and the air flow can be guided to the evaporator 4. As shown, Figure 11 As shown, in some embodiments, the upper end of the baffle 37 can extend to the condenser pipe at the bottom of the evaporator 4. In this way, the air flow can effectively exchange heat with the condenser pipe of the evaporator 4, thereby improving the refrigeration efficiency.

[0137] In some embodiments, the baffle 37 can have a plate structure.

[0138] As shown, Figure 11 In some embodiments, in the front-to-back direction of the upper air duct shell 31, the upper end of the baffle 37 can be inclined towards the side close to the evaporator 4.

[0139] In some embodiments, in the front-to-back direction of the upper air duct shell 31, the upper end of the baffle 37 can be inclined towards the side close to the evaporator 4.

[0140] As shown, Figure 11 In some embodiments, the upper end of the baffle 37 can abut against the front side of the bottom of the evaporator 4. In this way, the evaporator 4 can support the baffle 37 to some extent, thereby improving the structural stability of the baffle 37.

[0141] In other embodiments, the baffle 37 can be arranged vertically on the bottom wall of the upper air duct shell 31. The upper end of the baffle 37 can extend vertically upward.

[0142] In other embodiments, the baffle 37 can have other shapes of convex rib structures. In this way, the baffle 37 can also shield the condensed water.

[0143] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, and all the changes and replacements should be covered in the protection scope of the present application. Therefore, the scope of the present application is limited by the appended claims.

Claims

1. A refrigeration apparatus, characterized by comprising: The application relates to a refrigeration device, comprising: a box body forming a shell outside the refrigeration device; a box liner arranged in the box body, wherein a refrigeration compartment is arranged in the box liner; a refrigeration air duct arranged in the box liner, wherein the refrigeration air duct comprises: a top air duct arranged at the top of the refrigeration compartment, wherein an air inlet is arranged on the bottom wall of the top air duct; a back air duct arranged at the back of the refrigeration compartment, wherein the top of the back air duct is communicated with the rear end of the back air duct; the lower end of the back air duct forms an air outlet part, the bottom surface of the air outlet part is provided with an air outlet, and a plurality of air outlets are distributed along the rear wall of the box liner in a transverse direction; an evaporator arranged in the top air duct; a heating element arranged in the air outlet part, wherein the heating element is located above the air outlet; a fan arranged in the top air duct and located at the air inlet, wherein the fan is arranged on the front side of the evaporator, and the fan is configured to, when operating, draw air in the refrigeration compartment into the top air duct through the air inlet, flow to the back air duct, and then be transported into the refrigeration compartment through the plurality of air outlets.

2. The refrigeration device according to claim 1, wherein the heating element is in a strip shape, the length direction of the heating element is arranged along the rear wall of the box liner in a transverse direction, and is consistent with the arrangement direction of the plurality of air outlets.

3. The refrigeration device according to claim 2, wherein the air outlet part comprises: a vertical extension plate arranged in a vertical direction along the rear wall of the box liner, and arranged on the front side of the rear wall of the box liner in a spaced manner; a transverse extension plate bent and extended from the lower end of the vertical extension plate towards the rear wall of the box liner, wherein the rear end of the transverse extension plate abuts against the rear wall of the box liner, and the transverse extension plate is provided with the plurality of air outlets; the heating element is arranged at the back of the vertical extension plate, and the length direction of the heating element is consistent with the transverse extension direction of the transverse extension plate.

4. The refrigeration device according to claim 3, wherein further comprising a support arranged at the back of the vertical extension plate, wherein the front end of the support is connected with the vertical extension plate, and the rear end of the support is connected with the back of the box body; the support comprises two, and the two supports are arranged on the two transverse ends of the heating element respectively to support the heating element at the back of the vertical extension plate.

5. The refrigeration device according to claim 4, wherein the support comprises: a first connecting plate, wherein one plate surface of the first connecting plate is connected with the back of the vertical extension plate in a close-fitting manner; a second connecting plate, wherein the second connecting plate is arranged in an extending manner from the first connecting plate towards the rear, and the second connecting plate is arranged in a vertical direction; a third connecting plate, wherein the third connecting plate is arranged in an extending manner from the rear end of the second connecting plate, and the third connecting plate is arranged in a spaced manner behind the first connecting plate, and one plate surface of the third connecting plate is connected with the wall surface of the back of the box body in a close-fitting manner; the two transverse ends of the heating element are respectively connected with the second connecting plates of the two supports.

6. The refrigeration device according to claim 5, wherein further comprising an air duct shell arranged in the box liner, wherein the air duct shell comprises: An upper air duct shell member is arranged on the top of the box body, and the upper air duct shell member and the top wall of the box body form the top air duct. A rear air duct shell member is arranged on the rear end of the upper air duct shell member and extends downward, and the rear air duct shell member and the rear wall of the box body form the rear air duct, and the lower end of the rear air duct shell member is connected to the upper end of the vertically extending plate.

7. The refrigeration device according to claim 6, wherein, The air duct shell further comprises a water baffle arranged on the rear end of the upper air duct shell member, and the water baffle extends horizontally, and the lower end of the water baffle is connected to the bottom wall of the upper air duct shell member, and the upper end of the water baffle extends upward. The evaporator is arranged on the front side of the water baffle. In the front-to-rear direction of the box body, the upper end of the water baffle is arranged to be inclined toward the side away from the evaporator.

8. The refrigeration device according to claim 7, wherein, The air duct shell further comprises a support rib arranged on the rear of the water baffle, and the support rib extends vertically downward, and the upper end of the support rib is connected to the water baffle, and the lower end of the support rib is connected to the rear of the rear air duct.

9. The refrigeration device according to claim 6, wherein, The bottom of the evaporator is arranged to be spaced apart from the bottom wall of the upper air duct shell member to form a gap. The air duct shell further comprises a baffle plate arranged below the evaporator, and the lower end of the baffle plate is connected to the bottom wall of the upper air duct shell member, and the upper end of the baffle plate extends toward the bottom of the side of the evaporator close to the fan, and the baffle plate is used to shield the gap.

10. The refrigeration device according to claim 9, wherein, In the front-to-rear direction of the upper air duct shell member, the upper end of the baffle plate is arranged to be inclined toward the side close to the evaporator.

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