Refrigerator

Abstract

The application relates to the technical field of refrigeration equipment, and discloses a refrigerator. The refrigerator comprises an inner container which encloses an internal space; a cover plate which is located in the internal space and divides the internal space into a storage cavity and a refrigeration cavity, the refrigeration cavity is provided with a plurality of air return inlets, the air return inlets are communicated between the storage cavity and the refrigeration cavity, and airflow in the storage cavity can flow into the refrigeration cavity through the air return inlets; wherein the top of the refrigeration cavity, the bottom of the refrigeration cavity and the side of the refrigeration cavity are all provided with the air return inlets. The refrigerator can return air from multiple directions, so that the air in each region of the internal space can return to the refrigeration cavity in a nearby manner and then be recycled, the formation of vortex flow can be avoided, the waste of air volume can be avoided, the air return amount in the refrigerator can be improved, and the refrigeration effect can be finally improved.

Description

TECHNICAL FIELD

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

[0002] At present, most of the air-cooled refrigerators on the market adopt the scheme of single-side air supply and opposite-side air return, or the same-side air supply and return. These schemes all have the problem of long air supply and return distance, resulting in uneven temperature distribution in the refrigerator. And no matter the opposite-side air supply and return or the same-side air supply and return, there is a very difficult to break upper limit in air volume. SUMMARY

[0003] The following presents a simplified summary of some aspects of the disclosed embodiments in order to provide a basic understanding of such embodiments. This summary is not an extensive overview of the embodiments described in detail in the following detailed description, and is intended neither to identify key or critical elements nor to delineate the scope of such embodiments. Rather, the primary purpose of this summary is to present some concepts of the disclosed embodiments in a simplified form as a prelude to the more detailed description below.

[0004] The refrigerator provided by the embodiments of the present disclosure can improve the air volume of the refrigerator air return and improve the temperature uniformity of the internal space of the refrigerator.

[0005] The refrigerator provided by the embodiments of the present disclosure can improve the air volume of the refrigerator air return and improve the temperature uniformity of the internal space of the refrigerator.

[0006] The refrigerator provided by the embodiments of the present disclosure can achieve the following technical effects:

[0007] The cover plate separates the refrigeration cavity in the internal space, and the air return port is arranged in the refrigeration cavity. In this way, the air return port is not arranged on the side wall of the inner container. No matter where the air outlet is located in the internal space, the positions of the air return port and the air supply port are moderate, which can improve the uniformity of the airflow in the internal space, and further improve the uniformity of the temperature. The top wall, the bottom and the side of the refrigeration cavity are provided with air return ports, that is, the refrigerator can return air from multiple directions. In this way, the air in each area of the internal space can be returned to the refrigeration cavity nearby, and then be recycled, which can avoid vortex flow and waste of air volume, further improve the air return volume in the refrigerator, and finally improve the refrigeration effect. Moreover, the resistance of the airflow flowing back to the evaporator at the air return port can be reduced, and the flow smoothness can be improved.

[0008] The foregoing general description and the following detailed description are only exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0009] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0010] Figure 1 This is a partial structural schematic diagram of a freezer provided in an embodiment of this disclosure;

[0011] Figure 2 This is a partial structural schematic diagram of the freezer provided in an embodiment of this disclosure from another perspective;

[0012] Figure 3 This is a schematic diagram of the structure of a cover plate provided in an embodiment of this disclosure;

[0013] Figure 4 This is a schematic diagram of the structure of an inner liner provided in an embodiment of this disclosure;

[0014] Figure 5 This is a schematic cross-sectional view of a partial freezer provided in an embodiment of this disclosure;

[0015] Figure 6 yes Figure 5 A magnified structural diagram of part A in the middle;

[0016] Figure 7 This is another cross-sectional structural diagram of a partial freezer provided in an embodiment of this disclosure;

[0017] Figure 8 This is a schematic cross-sectional view of an inner liner provided in an embodiment of this disclosure;

[0018] Figure 9 This is a schematic diagram of the structure of a door provided in an embodiment of this disclosure;

[0019] Figure 10 This is a schematic diagram of the cooperation structure between an evaporator and a water receiving tray provided in an embodiment of this disclosure;

[0020] Figure 11 This is a schematic diagram of the structure of a water receiving tray provided in an embodiment of this disclosure;

[0021] Figure 12 This is a schematic diagram of the mating structure of a first evaporation fin and a connector provided in an embodiment of this disclosure;

[0022] Figure 13 This is a schematic diagram of another evaporator and water receiving tray assembly structure provided in an embodiment of this disclosure;

[0023] Figure 14 yes Figure 13 A magnified structural diagram of part B.

[0024] Reference signs:

[0025] 10, inner container; 101, front side wall; 102, rear side wall; 103, left side wall; 104, right side wall; 105, bottom wall; 1051, step; 106, inner space; 1061, storage cavity; 20, cover plate; 201, air return port (ventilation port); 2011, first air return port; 2012, second air return port; 2013, third air return port; 2014, gap; 2015, flow guide plate; 2016, partition plate; 2017, ventilation hole; 202, top plate; 2021, first plate segment; 2022, second plate segment; 2023, arc-shaped segment; 203, side plate; 30, refrigeration cavity; 301, foreign matter cabin; 3011, bottom wall of foreign matter cabin; 302, evaporator cabin; 3021, first wall segment; 3022, second wall segment; 3023, limiting portion; 3024, flow guide channel; 3025, boss; 303, drain hole; 40, evaporator; 401, evaporating fin; 4011, first evaporating fin; 402, evaporating pipe; 403, connecting piece; 4031, first bending portion; 4032, second bending portion; 404, first screw hole; 50, fan; 501, air supply air duct; 502, air supply port; 5021, first air supply port; 5022, second air supply port; 503, air outlet cover plate; 504, first side wall; 505, second side wall; 506, third side wall; 60, air guide channel; 601, first air guide channel; 602, second air guide channel; 70, water pan; 701, protrusion; 702, limiting groove; 7021, first limiting groove; 7022, second limiting groove; 80, door body. DETAILED DESCRIPTION

[0026] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0027] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0028] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0029] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0030] Unless otherwise specified, the term "a plurality of" means two or more.

[0031] The term "and / or" is a description of the association relationship of the object, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, three relationships.

[0032] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0033] Figure 1 The thick arrow in the figure indicates the flow direction of the air flow of the first air supply port 5021, the dashed arrow indicates the flow direction of the air flow of the second air supply port 5022, and the thin arrow indicates the flow direction of the air flow of the return air port 201. Figure 6 The arrows in the figure indicate the flow direction of the air flow of the three return air ports 201.

[0034] As shown in Figures 1 to 14 The present disclosure provides a refrigerator, in particular an air-cooled refrigerator, and in particular an air-cooled horizontal refrigerator. The refrigerator comprises a cabinet and a door body 80, and the door body 80 is movably arranged above the cabinet. The cabinet comprises a cabinet shell, an inner container 10 and a foaming layer. The inner container 10 is arranged inside the cabinet shell, and the foaming layer is arranged between the cabinet shell and the inner container 10. Optionally, the foaming layer is a heat preservation material.

[0035] As shown in Figure 2As shown, the inner liner 10 includes a bottom wall 105 and side walls. The side walls include a front side wall 101, a rear side wall 102, a left side wall 103, and a right side wall 104. The front side wall 101 and the rear side wall 102 are arranged opposite each other and are located at the front and rear ends of the bottom wall 105, respectively, and both the front side wall 101 and the rear side wall 102 extend upwards. The left side wall 103 and the right side wall 104 are arranged opposite each other and are located at the left and right ends of the bottom wall 105, respectively, and extend upwards. The bottom wall 105, the front side wall 101, the rear side wall 102, the left side wall 103, and the right side wall 104 together enclose an internal space 106. The internal space 106 has an opening that faces upwards, and a door 80 is movably mounted on top of the opening.

[0036] For ease of description, this application defines the front-back direction as the width direction and the left-right direction as the length direction.

[0037] This disclosure provides a freezer, such as... Figure 1 and Figure 2 As shown, the inner liner 10 includes a first sidewall 504 and a second sidewall 505 disposed opposite to each other. The first sidewall 504 and the second sidewall 505 are disposed along the width direction of the inner liner 10. The first sidewall 504 defines an air supply duct 501 with an air outlet 502. Here, the first sidewall 504 and the second sidewall 505 are disposed along the width direction of the inner liner 10. That is to say, the first sidewall 504 can be a rear sidewall 102 or a front sidewall 101, and correspondingly, the second sidewall 505 can be a front sidewall 101 or a rear sidewall 102. It can be understood that one of the front sidewall 101 and the rear sidewall 102 defines an air supply duct 501 with an air outlet 502. This enables air to be discharged from the internal space 106, thereby achieving air cooling.

[0038] Optionally, the cover plate 20 is located within the internal space 106, dividing the internal space 106 into a cooling chamber 30 and a storage chamber 1061. The cover plate 20 forms a return air vent 201 that communicates with the cooling chamber 30. The cooling chamber 30 and the storage chamber 1061 are connected through the return air vent 201. The air outlet of the cooling chamber 30 is connected to the air inlet of the air supply duct 501. An air supply vent 502 is provided inside the storage chamber 30 so that the airflow from the cooling chamber 30 flows into the storage chamber 1061 through the air supply duct 501 and the air supply vent 502 for heat exchange and cooling. The airflow after heat exchange flows back into the cooling chamber 30 through the return air vent 201. Here, the storage chamber 1061 is used to hold items that need to be frozen, such as meat, seafood, or tea. The cooling chamber 30 generates a cooling airflow, which flows from the cooling chamber 30 to the air supply duct 501, then flows into the storage chamber 1061 through the air supply port 502. After exchanging heat with the objects in the storage chamber 1061, the cooling airflow flows back into the cooling chamber 30 for recooling, and then flows back into the air supply duct 501 for circulation. This achieves air circulation in the freezer, enabling air-cooled refrigeration. Optionally, the distance between the return air port 201 and the first side wall 504 is greater than the distance between the return air port 201 and the second side wall 505. In this embodiment, the first side wall 504 is provided with the air supply port 502, and the return air port 201 is close to the second side wall 505. This allows the airflow from the air supply port 502 to flow back to the return air port 201 in the front-back direction. This increases the airflow volume in the front-back direction (width direction) of the freezer, expands the airflow area, and thus improves the temperature uniformity within the internal space 106.

[0039] Optionally, the cover 20 can be of various shapes, such as L-shaped or inclined. The refrigeration cavity 30 can also be of various shapes and located at different positions in the internal space 106. For example, the refrigeration cavity 30 can be located at the left, middle or right end of the internal space 106. In practical applications, the layout of the refrigeration cavity 30 and the storage cavity 1061 can be determined according to the structure of the internal space 106 of the freezer.

[0040] Understandably, the cover plate 20 is located within the internal space of the inner liner, thereby separating a relatively independent refrigeration chamber 30, which facilitates the installation of refrigeration components. Optionally, the refrigeration components can be an evaporator, a fan, etc.

[0041] Optionally, the cooling chamber 30 extends along the width of the inner liner 10. This facilitates the placement of the return air vent 201 close to the second side wall 505 and also facilitates the connection between the cooling chamber 30 and the air supply duct 501 of the first side wall 504. Optionally, the cover plate 20 extends along the width of the inner liner 10, with one end of the cover plate 20 connected to the first side wall 504 and the other end connected to the second side wall 505. This facilitates the stable placement of the cooling chamber 30 and its connection with the air supply duct 501.

[0042] Optionally, the freezer also includes an evaporator 40 located within the refrigeration chamber 30 for cooling the airflow within the refrigeration chamber 30. The refrigeration chamber 30, the air supply duct 501, and the storage chamber 1061 together form a circulating air path. The freezer also includes a fan 50 located within the air supply chamber and / or the refrigeration chamber 30, which drives the airflow in the circulating air path.

[0043] Optionally, the fan 50 is located within the air supply duct 501. Here, the fan 50 is located within the air supply duct 501, meaning that the fan 50 and the air supply duct 501 are on the same side. The airflow from the fan 50 will not pass through corners or other bends as it flows towards the air supply duct 501. This results in low airflow resistance, minimal airflow loss, and low potential energy consumption within the air supply duct 501, while also ensuring smoother and more uniform airflow. Furthermore, it reduces the requirements for the refrigeration system and lowers costs.

[0044] Optionally, the sidewall includes a sidewall body and an air outlet cover 503, such as Figure 2 As shown, when the sidewall defines the air supply duct 501, the sidewall body protrudes in the direction away from the internal space 106 to form the air supply duct 501. An air outlet cover 503 is installed on the side of the air supply duct 501 facing the internal space 106, and the air outlet cover 503 forms an air outlet 502. Specifically, in the case where the first sidewall 504 defines the air supply duct 501, the first sidewall 504 includes a first sidewall body and an air outlet cover 503. The first sidewall body protrudes in the direction away from the internal space 106 to form the air supply duct 501. The air outlet cover 503 is installed on the side of the air supply duct 501 facing the internal space 106, and the air outlet cover 503 forms an air outlet 502.

[0045] In this embodiment, the first sidewall body protrudes in a direction away from the internal space 106 to form an air supply duct 501. That is, the first sidewall body protrudes towards the foam layer, so that the air supply duct 501 does not occupy the internal space 106, thereby ensuring the storage space of the freezer. The air outlet cover 503 cooperates with the air supply duct 501, so that the airflow in the air supply duct 501 can flow along the air supply duct 501 and flow out from the air outlet 502.

[0046] Optionally, the air supply duct 501 extends along the length of the first side wall 504. Here, the air supply duct 501 extending along the length of the first side wall 504 can increase the air volume of the freezer in the length direction, thereby improving the air volume and temperature uniformity of the internal space 106.

[0047] Optionally, the air supply duct 501 can extend in a straight line, or it can be arc-shaped or curved. Any form of the air supply duct 501 that can increase the air volume along the length of the freezer is a possible embodiment of this application.

[0048] Optionally, the number of air supply ducts 501 can be one or more. When there are multiple air supply ducts 501, at least two of the multiple air supply ducts 501 are arranged at intervals along the height direction of the inner liner 10.

[0049] In this embodiment, as Figure 2 As shown, at least two air supply ducts 501 are spaced apart along the height of the inner liner 10, which increases the air volume of the freezer in the height direction. This ensures airflow in the length, width, and height of the freezer, further improving the air volume and temperature uniformity of the internal space 106.

[0050] Optionally, the air supply duct 501 can be located at the upper part, middle part, or lower part of the first side wall 504. When there are multiple air supply ducts 501, air supply ducts 501 at different heights can be provided. For example, air supply ducts 501 can be provided at the upper and lower parts of the first side wall 504, or at the upper and middle parts of the first side wall 504. Air supply ducts 501 at different heights can supply air to the internal space 106 at different heights, improving the flexibility and air volume of the freezer's air outlet.

[0051] Optionally, such as Figure 1 and Figure 9 As shown, the upper surface of the bottom wall 105 and / or the lower surface of the door 80 are constructed with air guide channels 60. The air guide channels 60 extend along the width direction of the inner liner 10 (that is, along the front-to-back direction). The air guide channels 60 can cooperate with the air outlet 502 to make the airflow of the air outlet 502 flow from back to front or from front to back. This increases the airflow area, improves the uniformity of air supply, makes the temperature of the internal space 106 more uniform, and improves the cooling effect of the freezer.

[0052] Optionally, the upper surface of the bottom wall 105 is provided with a first air guide channel 601, which corresponds to the air outlet 502. The first air guide channel 601 extends along the width direction of the inner liner 10 so that the airflow from the air outlet 502 can flow to the second side wall 505. The air guide channel 60 includes the first air guide channel 601.

[0053] In this embodiment, the air supply duct 501 and the air outlet are located on the first side wall 504. Since items will be placed in the internal space 106, these items will block the airflow from the air supply duct 502 to the second side wall 505. The first air guide channel 601 corresponds to the air supply duct 502. Specifically, the position of the first air guide channel 601 corresponds to the air supply duct 502. In this way, the airflow from the air supply duct 502 can flow along the first air guide channel 601 to the second side wall 505, thereby improving the uniformity of air supply and ensuring that the airflow can flow from the first side wall 504 to the second side wall 505, thus improving the air volume and temperature uniformity of the internal space 106.

[0054] Optionally, when the upper wall surface of the bottom wall 105 is constructed with a first air guide channel 601, the air supply duct 501 is located at the lower part of the first side wall 504, so that the air outlet 502 and the first air guide channel 601 can better cooperate in air supply and air guidance.

[0055] Optionally, the lower wall of the door 80 is provided with a second air guide channel 602, which corresponds to the air outlet 502. The second air guide channel 602 extends along the width direction of the inner liner 10 so that the airflow from the air outlet 502 can flow to the second side wall 505. The air guide channel 60 includes the second air guide channel 602. Similarly, when the door 80 covers the interior space 106, if there are many items in the interior space 106, the items can also block the flow of airflow from the air outlet 502. The second air guide channel 602 can guide the airflow from the air outlet 502 at the top of the first side wall 504 to the second side wall 505, thereby improving the air volume and temperature uniformity of the interior space 106.

[0056] Optionally, when the lower wall of the door 80 is constructed with a second air guide channel 602, the air supply duct 501 is located above the first side wall 504, so that the air outlet 502 can better cooperate with the second air guide channel 602 for air outlet and air flow.

[0057] Optionally, there are multiple air guide channels 60, which are arranged at intervals along the length of the inner liner 10.

[0058] In this embodiment, multiple air guide channels 60 can guide the airflow from the air outlet 502 in the length direction, increase the air volume of the air outlet 502, and improve the air cooling effect.

[0059] Optionally, the flow areas of the multiple air guide channels 60 can be the same or different. When the fan 50 is located at one end of the first side wall 504, the flow area of ​​the air guide channel 60 gradually increases in the direction away from the fan 50 to increase the airflow in the direction away from the fan 50.

[0060] It should be noted that when both the front side wall 101 and the rear side wall 102 are provided with air supply ducts 501 and air outlets 502, that is, when air is supplied from both the front and rear sides, the upper wall surface of the bottom wall 105 and / or the lower wall surface of the door 80 can also be provided with air guide channels 60 to increase the smoothness of the cooling airflow in the front and rear directions and the uniformity of air supply.

[0061] Optionally, such as Figure 5 As shown, the air outlet 502 includes a first air outlet 5021, which is provided on the air outlet cover 503. The first air outlet 5021 corresponds to the air guide channel 60. In this embodiment, the first air outlet 5021 is located on the air outlet cover 503. The air outlet 502 located at the lower part of the first side wall 504 or the second side wall 505 is higher than the bottom wall 105, and the air outlet 502 located at the upper part of the first side wall 504 or the second side wall 505 is lower than the door body 80. Therefore, the airflow from the first air outlet 5021 is divided into two parts: one part flows directly in the front-back direction without passing through the air guide channel 60, and the other part flows into the air guide channel 60, where it flows to achieve the front-back airflow.

[0062] Optionally, such as Figure 2 As shown, when the air supply duct 501 is located at the lower part of the first side wall 504 and / or the lower part of the second side wall 505, a notch is provided on the lower side wall of the air supply duct 501. The notch corresponds to and is connected to the air guide channel 60. The air outlet cover 503 and the notch together form the second air outlet 5022. The air outlet 502 includes the second air outlet 5022. In this embodiment, since the internal space 106 stores items, the items will block part of the airflow flowing out of the first air outlet 5021. The notch allows the airflow of the air supply duct 501 to flow downward through the notch and then flow into the air guide channel 60 to flow to the opposite side.

[0063] Optionally, there are multiple first air outlets 5021 and multiple second air outlets 5022, and the multiple first air outlets 5021 and multiple second air outlets 5022 are arranged alternately in sequence.

[0064] In this embodiment, the first air outlet 5021 and the second air outlet 5022 are staggered, which can not only prevent the airflow from being blocked by the items in the internal space 106, but also ensure that some airflow can flow directly into the items to cool them, thereby improving the temperature uniformity of the internal space 106.

[0065] Optionally, such as Figure 7As shown, the fan 50 is located inside the air supply duct 501 and at one end of the inner liner 10 along its length. The fan 50 drives the airflow in the air supply duct 501 to flow out through the air outlet 502. The opening area of ​​the first air outlet 5021 gradually increases along the direction away from the fan 50. In this embodiment, since the fan 50 is located at one end of the inner liner 10 along its length, the airflow intensity in the air supply duct 501 away from the fan 50 is relatively low. To ensure sufficient airflow, the opening area of ​​the first air outlet 5021 gradually increases, which improves the uniformity of airflow along the length of the inner liner 10.

[0066] Optionally, the upper wall portion of the bottom wall 105 is recessed in the direction away from the internal space 106 to form a first air guide channel 601. The recessed bottom wall 105 forms the first air guide channel 601, ensuring that the first air guide channel 601 does not occupy the internal space 106 and thus maintains the storage capacity of the internal space 106. This design also facilitates manufacturing and is easy to implement. Alternatively, the lower wall portion of the door body 80 is recessed in the direction away from the internal space 106 to form a second air guide channel 602. Similarly, the recessed lower wall of the door body 80 forms the second air guide channel 602, ensuring that the second air guide channel 602 does not occupy the internal space 106 and thus maintains the storage capacity of the internal space 106. This design also facilitates manufacturing and is easy to implement.

[0067] Optionally, a foam layer exists between the bottom wall 105 and the casing. When the upper surface of the bottom wall 105 is constructed with a first air guide channel 601, a portion of the bottom wall 105 is recessed towards the foam layer to form the first air guide channel 601. The depth of the first air guide channel 601 is in the range of 10%-40% of the total thickness of the foam layer and the bottom wall 105. This ensures the thickness of the foam layer, thereby guaranteeing the insulation effect. Furthermore, it provides a certain depth to the first air guide channel 601, preventing items in the internal space 106 from contacting the bottom wall 105 of the first air guide channel 601 and thus blocking the airflow, thereby improving air guiding efficiency. Optionally, the ratio of the depth of the first air guide channel 601 to the total thickness of the foam layer and the bottom wall 105 can be 10%, 20%, 25%, 30%, 35%, 40%, etc.

[0068] Optionally, such as Figure 9As shown, when the lower wall of the door body 80 is constructed with a second air guide channel 602, the lower wall of the door body 80 is recessed upwards to form the second air guide channel 602. The ratio of the depth of the second air guide channel 602 to the thickness of the door body 80 ranges from 10% to 40%. A foam layer is also provided inside the door body 80, and the lower wall of the door body 80 is recessed towards the foam layer to form the second air guide channel 602. The ratio of the depth of the second air guide channel 602 to the thickness of the door body 80 ranges from 10% to 40%. This ensures the thickness of the door body 80, thereby guaranteeing the insulation effect. Furthermore, it provides a certain depth to prevent items in the internal space 106 from contacting the bottom wall 105 of the second air guide channel 602 and thus blocking the airflow, thereby improving air guiding efficiency. Optionally, the ratio of the depth of the second air guide channel 602 to the thickness of the door body 80 can be 10%, 20%, 25%, 30%, 35%, 40%, etc.

[0069] Optionally, the freezer also includes a central beam located at the opening of the internal space 106. When the air supply duct 501 is located above the first side wall 504, the height of the upper end of the air outlet 502 is less than the height of the lower end of the central beam. This ensures that the air outlet 502 is not blocked by the door 80. Optionally, along the height direction of the first side wall 504, the distance between the upper end of the air outlet 502 and the lower end of the central beam is less than or equal to 20mm, such as 5mm, 10mm, 15mm, 18mm, etc. This ensures that the height of the air outlet 502 is not too low, making the air supply height high enough to ensure that the air can reach the second side wall 505.

[0070] It should be noted that the height relationship between the air outlet 502 and the middle beam in this application is not limited to the case where the first side wall 504 has the air outlet 502. The same applies to the case where the second side wall 505 has the air outlet 502.

[0071] Optionally, such as Figure 1 and Figure 6As shown, there are one or more return air vents 201, and multiple return air vents 201 can increase the return air volume of the freezer. Optionally, one or more of the top, bottom, and sides of the refrigeration chamber 30 are provided with return air vents 201. The cover plate 20 divides the refrigeration chamber 30 within the internal space 106, and the return air vents 201 are located in the refrigeration chamber 30. In this way, the return air vents 201 are not located on the side wall of the inner liner 10. Regardless of where the air is vented from in the internal space 106, the positions of the return air vents 201 and the air outlets 502 are relatively moderate, which can improve the uniformity of airflow in the internal space 106, thereby improving the temperature uniformity. Optionally, one or more of the top wall, bottom, and sides of the refrigeration cavity 30 are provided with return air vents 201. This means the freezer can return air from multiple directions, allowing air from all areas of the internal space 106 to return to the refrigeration cavity 30 for reuse. This avoids the formation of eddies, prevents airflow waste, and increases the return air volume within the freezer, ultimately improving the cooling effect. Optionally, return air vents 201 are provided at the top, bottom, and sides of the refrigeration cavity 30. This improves the temperature uniformity and airflow uniformity within the internal space.

[0072] Optionally, such as Figure 3 As shown, the cover plate 20 includes a top plate 202 and a side plate 203. The top plate 202 is located above the refrigeration cavity 30 and has a first return air vent 2011. The side plate 203 is located on the side of the top plate 202 facing the storage cavity 1061 and extends downward. The side plate 203 has a second return air vent 2012. The return air vent 201 includes the first return air vent 2011 and the second return air vent 2012.

[0073] In this embodiment, the cover plate 20 serves as the cavity wall of the refrigeration chamber 30, and both the top plate 202 and the side plate 203 are provided with return air vents 201, which can realize the return air from the top and sides of the refrigeration chamber 30.

[0074] Optionally, the cover plate 20 is L-shaped, which can reduce the horizontal space occupied by the cover plate 20 in the internal space 106. The return air vents 201 are respectively located on the top plate 202 and the side plate 203 of the L-shaped cover plate.

[0075] Optionally, such as Figure 3As shown, the freezer also includes a partition 2016, which is located above the first return air vent 2011 and connected to the top plate 202. The side wall of the partition 2016 has ventilation holes 2017. Airflow in the storage cavity 1061 flows through the ventilation holes 2017 to the first return air vent 2011, preventing foreign objects from entering the refrigeration chamber 30 through the first return air vent 2011. Since the first return air vent 2011 is located on top of the cover plate 20, which is located within the internal space 106 with its opening facing upwards, foreign objects in the storage cavity 1061 can easily fall onto the top of the cover plate 20 and then enter the refrigeration chamber 30 through the first return air vent 2011, affecting the freezer's cooling performance. The partition 2016 covers the area above the first return air vent 2011, preventing foreign objects from falling into the refrigeration chamber 30 from the first return air vent 2011. The ventilation holes are located on the side to facilitate airflow at the first return air inlet 2011.

[0076] Optionally, such as Figure 7 and Figure 8 As shown, the refrigeration chamber 30 also defines a connected evaporator compartment 302 and a foreign matter compartment 301. The evaporator 40 is located inside the evaporator compartment 302, and the return air vent 201 is located in the foreign matter compartment 301. Because the return air vent 201 is located in the foreign matter compartment 301, any impurities from the storage chamber 1061 or external sources falling into the refrigeration chamber 30 through the return air vent 201 will fall into the foreign matter compartment 301. This prevents foreign objects from falling into the evaporator compartment 302 through the return air vent 201, and consequently, from falling into the evaporator 40, thus avoiding any impact on the operation of the evaporator 40 and ensuring the refrigeration function of the freezer.

[0077] It should be noted that in some embodiments, the air outlet circuit of the freezer differs from that of this application. For example, the refrigeration chamber 30 may have an air outlet or other opening. For ease of description, the opening that connects the refrigeration chamber 30 and the storage chamber 1061 is collectively referred to as the ventilation opening 201. The ventilation opening 201 can be a return air vent 201, an air outlet, or a vent hole, etc. In these embodiments, the refrigeration chamber 30 may also define a foreign object compartment 301 and an evaporator compartment 302. The ventilation opening is located in the foreign object compartment 301, which can also achieve the technical effect of preventing foreign objects from falling into the evaporator 40. These are all optional embodiments of this application.

[0078] Optionally, the evaporator compartment 302 and the foreign matter compartment 301 are arranged sequentially along the direction from the first sidewall 504 to the second sidewall 505. That is, as shown... Figure 7 As shown, the evaporator compartment 302 and the foreign object compartment 301 are arranged along the width direction of the inner liner 10. In this embodiment, when the airflow flows in the front-to-back direction, the evaporator compartment 302 and the foreign object compartment 301 are arranged along the width direction, which can efficiently utilize the space inside the refrigeration chamber 30, not only to house the evaporator 40 but also to prevent foreign objects from falling in.

[0079] Optionally, the bottom wall 3011 of the foreign object compartment is inclined downwards along the direction from the cooling chamber 30 to the storage chamber 1061, so as to facilitate the flow of foreign objects in the foreign object compartment 301 into the storage chamber 1061. In this embodiment, the foreign object compartment 301 is inclined so that foreign objects in the foreign object compartment 301 can be smoothly discharged into the storage chamber 1061, thereby facilitating the handling of foreign objects.

[0080] Optionally, the bottom of the foreign object compartment 301 is provided with a vent 201, which connects the foreign object compartment 301 and the storage cavity 1061. In this way, foreign objects that fall into the bottom wall 3011 of the foreign object compartment can fall into the storage cavity 1061 through the vent, making it easier for the user to clean up the foreign objects.

[0081] Optionally, the angle between the bottom wall 3011 of the foreign object compartment and the horizontal direction is greater than 3°. In this embodiment, the angle is too small, which is not conducive to the flow of foreign objects. In practical applications, the angle can be set as required, such as 5°, 10°, 15°, 20°, 30°, 45°, etc.

[0082] Optionally, the angle between the bottom wall 3011 of the foreign object compartment and the horizontal direction is less than 60°, which can prevent the foreign object compartment 301 from tilting too much, thus reducing the capacity of the foreign object compartment 301.

[0083] Optionally, such as Figure 4 As shown, the bottom wall of the refrigeration chamber 30 is provided with a drain hole 303, and the evaporator 40 is inclined so that the defrosting water of the evaporator 40 can be discharged from the drain hole 303. The inclined arrangement of the evaporator 40 allows the defrosting water of the evaporator 40 to flow more fully to the drain hole 303, thereby improving the drainage efficiency of the defrosting water of the evaporator 40, thus preventing ice buildup on the evaporator 40, preventing the growth of bacteria on the evaporator 40, and improving the cleanliness of the freezer.

[0084] Alternatively, the evaporator 40 can be supported at one end by a support member to allow the evaporator 40 to tilt. Alternatively, the bottom wall of the refrigeration chamber 30 can be tilted to allow the evaporator 40 to tilt.

[0085] Optionally, the bottom wall of the refrigeration chamber 30 includes the bottom wall of the evaporator compartment 302, the bottom wall of the evaporator compartment 302 is provided with a drain hole 303, and the evaporator 40 is inclinedly disposed on the bottom wall of the evaporator compartment 302 so that the defrosting water of the evaporator 40 can be discharged from the drain hole 303.

[0086] Optionally, such as Figure 8As shown, the bottom wall of the evaporator compartment 302 includes a first wall section 3021 and a second wall section 3022. One end of the first wall section 3021 is connected to the first side wall 504 and slopes downwards along the direction from the first side wall 504 to the second side wall 505. One end of the second wall section 3022 is connected to the other end of the first wall section 3021, and the other end of the second wall section 3022 is connected to one end of the bottom wall 3011 of the foreign matter compartment. The other end of the foreign matter compartment 301 is connected to the second side wall 505. A drain hole 303 is provided at the connection between the other end of the first wall section 3021 and the end of the second wall section 3022. The evaporator 40 is located above the first wall section 3021 and slopes downwards along the direction from the evaporator compartment 302 to the foreign matter compartment 301. In this embodiment, the first wall section 3021 is inclined and the evaporator 40 is located in the first wall section 3021, so that the evaporator 40 can be placed inclined in the evaporator chamber 302, which facilitates the defrosting water of the evaporator 40 to flow along the first wall section 3021 to the drain hole 303, and then discharged from the drain hole 303.

[0087] Optionally, the second wall segment 3022 is at least partially inclined downwards along the direction from the second sidewall 505 to the first sidewall 504, with the evaporator 40 extending over the drain hole 303 and positioned above the second wall segment 3022. Specifically, the second wall segment 3022 includes an inclined section that slopes downwards along the direction from the second sidewall 505 to the first sidewall 504, with the evaporator 40 extending over the drain hole 303 and above the inclined section of the second wall segment 3022.

[0088] In this embodiment, the second wall section 3022 is also inclined toward the drain hole 303. When the size of the evaporator 40 is large, part of the evaporator 40 is located in the second wall section 3022, so that the defrosting water of the evaporator 40 can also flow along the second wall section 3022 to the drain hole 303.

[0089] Optionally, such as Figure 4 As shown, the bottom wall of the refrigeration chamber 30 is provided with a limiting part 3023, which can abut against one end of the evaporator 40 to restrict the downward movement of the evaporator 40. In this embodiment, since the evaporator 40 is inclined, the bottom wall of the refrigeration chamber 30 is provided with a limiting part 3023 corresponding to the lower end of the evaporator 40 to restrict the sliding of the evaporator 40.

[0090] Optionally, the upper wall surface of the second wall segment 3022 is configured with a flow guiding channel 3024 and a limiting part 3023. The limiting part 3023 and the flow guiding channel 3024 are arranged along the length direction of the inner liner 10, and the limiting part 3023 is located on at least one side of the flow guiding channel 3024. Figure 4As shown, the middle of the second wall section 3022 is recessed to form a flow guide channel 3024, which is inclined toward the drain hole 303 to facilitate the discharge of defrost water from the evaporator 40. Both ends of the second wall section 3022 protrude to form limiting portions 3023, which can abut against one end of the evaporator 40 to restrict the evaporator 40 from sliding downward.

[0091] Optionally, the flow area of ​​the guide channel 3024 gradually increases along the direction from the second sidewall 505 to the first sidewall 504. This allows defrosting water from the evaporator 40 to flow to the drain hole 303 more quickly, preventing water accumulation.

[0092] Optionally, such as Figure 12 As shown, the freezer also includes a connector 403, which connects the evaporator 40 and the inner liner 10. The connector 403 is used to restrict the movement of the evaporator 40 relative to the step 1051. In this embodiment, the connector 403 can also be used to limit the movement of the evaporator 40.

[0093] Optionally, such as Figure 10 As shown, the evaporator 40 includes evaporation fins 401, which extend along the width direction of the inner liner 10. There are multiple evaporation fins 401, which are sequentially spaced along the length direction of the inner liner 10. Among them, the multiple evaporation fins 401 include a first evaporation fin 4011, which is located at the end of the evaporator 40 away from the storage cavity 1061. A connector 403 is located at at least one end of the first evaporation fin 4011 along the width direction of the inner liner 10.

[0094] In this embodiment, the evaporator 40 uses its own evaporation fins 401 to set the connector 403, which can realize the connection between the connector 403 and the evaporation fins 401.

[0095] It should be noted that the evaporator fins 401 can also extend along the length of the inner liner 10, and multiple evaporator fins 401 can be arranged sequentially at intervals along the width of the inner liner 10. The evaporator fins 401 can also be arranged in other directions, and the evaporator 40 and the inner liner 10 can be connected by the connector 403, which are all optional embodiments of this application.

[0096] Optionally, the connector 403 includes a first bent portion 4031, which is connected to the inner liner 10, thereby increasing the connection area between the connector 403 and the inner liner 10 and improving the connection stability.

[0097] The evaporator 40 also includes an evaporator tube 402, which reciprocates through multiple evaporator fins 401 and protrudes from the first evaporator fins 4011. Optionally, the connector 403 further includes a second bend 4032, one end of which is connected to the first evaporator fin 4011, and the other end of which is connected to the first bend 4031. The opening of the second bend 4032 faces the evaporator tube 402 to avoid it. In this embodiment, the second bend 4032 can avoid the evaporator tube 402, avoiding conflict with the evaporator 40. The connector 403, through the two bends, can both avoid the evaporator tube 402 and form a surface fit with the inner liner 10, achieving strong fixation and limiting of the evaporator 40 and the inner liner 10.

[0098] Optionally, the height of the bottom wall 3011 of the foreign object compartment is less than the height of the other end of the second wall section 3022. That is, the connection between the bottom wall 3011 of the foreign object compartment and the bottom wall of the evaporator compartment 302 forms a barrier, so that foreign objects in the foreign object compartment 301 will not enter the evaporator compartment 302.

[0099] Optionally, the bottom wall 105 of the inner liner 10 protrudes 701 towards the refrigeration cavity 30 to form a step 1051. The compressor is placed below the step 1051, and a cover plate 20 is placed over the step 1051. The cover plate 20 and the step 1051 together enclose the refrigeration cavity 30. The evaporator 40 is located inside the refrigeration cavity 30 and above the step 1051.

[0100] In this embodiment, the freezer needs to be equipped with components such as a compressor and a condenser, therefore, as Figure 2 As shown, the bottom wall 105 of the inner liner 10 protrudes upward to form a step 1051, and the area below the step 1051 is used to avoid the compressor. In this application, the cover plate 20 is located above the step 1051, so that the cover plate 20, the step 1051, and the side wall of the inner liner 10 can enclose the refrigeration cavity 30. The evaporator 40 is located above the step 1051, so that the evaporator 40 does not occupy too much horizontal space in the internal space 106, ensuring the storage volume of the storage cavity 1061, and making the refrigeration cavity 30 more compact, reducing the bulkiness inside the freezer.

[0101] The cooling cavity 30 can be formed by the cover plate 20 and the step 1051 together, or the cooling cavity 30 can be formed by the cover plate 20, the step 1051, the first side wall 504, and the second side wall 505. The shape of the cover plate 20 can be adjusted to form the cooling cavity 30.

[0102] Optionally, the step 1051 is L-shaped, so that the step 1051 can be adapted to the compressor chamber, minimizing the proportion of the internal space 106 occupied by the step 1051.

[0103] Optionally, the evaporation fins 401 of the evaporator 40 extend along the length of the inner liner 10 or along the width of the inner liner 10 and are placed on the step 1051. This can reduce the height of the refrigeration chamber 30, avoid the evaporator 40 occupying a large amount of portable space on the top of the step 1051, allow a rack to be installed on the top of the step 1051, and ensure that the rack is large enough to increase storage capacity.

[0104] Optionally, the evaporator 40 is placed at an angle on the step 1051, so that the defrosting water of the evaporator can flow more fully to the drain hole, thereby improving the drainage efficiency of the defrosting water, thus preventing ice buildup on the evaporator, preventing bacteria growth on the evaporator, and improving the cleanliness of the freezer.

[0105] Optionally, the evaporator 40 is inclined in the width direction. Since the step 1051 is limited in the length direction of the inner liner, the evaporator is inclined in the width direction so that the evaporator can be inclined at a sufficient angle.

[0106] Optionally, the top wall of step 1051 is at least partially inclined downward along the width of the inner liner to tilt the evaporator 40. The inclination of step 1051 facilitates the tilting of the evaporator.

[0107] It can be understood that when the evaporator 40 is located on the step 1051, the bottom wall of the refrigeration chamber 30 mentioned above is also the top wall of the step 1051. The top wall of the step 1051 includes the bottom wall of the evaporator chamber 302 and the bottom wall 3011 of the foreign matter chamber, and also has the technical features of the bottom wall of the evaporator chamber 302 and the bottom wall 3011 of the foreign matter chamber. Therefore, the technical features of the bottom wall of the refrigeration chamber 30 also apply to the top wall of the step 1051, which will not be repeated here.

[0108] Optionally, such as Figure 6 As shown, when the bottom of the refrigeration chamber 30 is provided with a return air vent 201, there is a gap 2014 between the side plate 203 and the wall of the step 1051 facing the storage chamber 1061. The gap 2014 is connected to the refrigeration chamber 30. The lower end of the gap 2014 forms a third return air vent 2013. The third return air vent 2013 connects the gap 2014 and the storage chamber 1061. The return air vent 201 includes the third return air vent 2013.

[0109] In this embodiment, a gap 2014 exists between the cover plate 20 and the side of the step 1051. The third return air vent 2013 is located at the bottom of the gap 2014, so that the airflow in the storage cavity 1061 can flow along the third return air vent 2013 and the gap 2014 into the cooling cavity 30, thereby realizing bottom return air in the cooling cavity 30. Optionally, when the bottom of the foreign matter compartment 301 is provided with a vent 201, the vent can be the third return air vent 2013, which also facilitates the discharge of foreign matter in the foreign matter compartment 301.

[0110] Optionally, the side plate 203 portion of the cover plate 20 abuts against the side wall of the step 1051. Specifically, the side plate 203 portion is abutted against or close to the step 1051.

[0111] Optionally, the sidewall of step 1051 is recessed in the direction away from storage cavity 1061 to form a groove, and side plate 203 is placed in the groove to form gap 2014. In this embodiment, step 1051 is recessed inward towards storage cavity 1061, which can avoid occupying too much volume of storage cavity 1061. Moreover, cover plate 20 does not need to protrude towards storage cavity 1061, which can improve the overall aesthetics of internal space 106. Optionally, the groove is a vertical groove to facilitate airflow from bottom to top. Moreover, the groove makes the passage flow area of ​​the third return air port 2013 larger, which can reduce the resistance of airflow from the return air port to the evaporator 40, avoid airflow impact with the sidewall of step, improve flow smoothness, and reduce air volume loss.

[0112] This application, through the setting of three return air vents, makes the return air of the freezer smoother. The airflow returns to the evaporator from the return air vents without resistance. The return air area is large, which can reduce the loss of air volume and improve the smoothness of airflow.

[0113] Specifically, the sidewall of step 1051 refers to the sidewall of step 1051 facing the storage cavity 1061. Optionally, the sidewall portion of step 1051 is recessed in the direction away from the storage cavity 1061 to form a groove.

[0114] Optionally, the first return air inlet 2011 corresponds to the second return air inlet 2012, the third return air inlet 2013 corresponds to the second return air inlet 2012, and the third return air inlet 2013 is located below the second return air inlet 2012.

[0115] In this embodiment, the three return air inlets 201 are all set accordingly, so that the return air position of the freezer is consistent in the width direction. In particular, the first side wall 504 is provided with an air supply outlet 502. When the return air inlet 201 is close to the second side wall 505, it can be ensured that the airflow returning to the return air inlet 201 flows in the front-to-back direction.

[0116] Optionally, such as Figure 6As shown, the freezer also includes a baffle plate 2015, which is located at the second return air inlet 2012. Along the direction from the storage cavity 1061 to the refrigeration cavity 30, the baffle plate 2015 is inclined upwards to guide the airflow flowing in through the second return air inlet 2012 upwards. The baffle plate 2015 causes the airflow flowing into the second return air inlet 2012 to flow upwards. Since the evaporator 40 is located above the step 1051 and has a certain height, the upward flow of the airflow into the second return air inlet 2012 increases the contact area with the evaporator 40, improving the smoothness of the return airflow and the flow through the evaporator 40. This also prevents the airflow from impacting the side wall of the step 1051 and causing unnecessary damage.

[0117] Optionally, when the refrigeration chamber 30 defines the evaporator compartment 302 and the foreign object compartment 301, multiple return air vents 201 are connected to the foreign object compartment 301, which can prevent foreign objects from falling into the evaporator compartment 302.

[0118] In one specific embodiment, the air outlet 502 is located on the first side wall 504, and the distance between the return air outlet 201 and the first side wall 504 is greater than the distance between the return air outlet 201 and the second side wall 505, that is, the return air outlet 201 is close to the second side wall 505, so that the airflow in the internal space 106 can flow in the front-to-back direction. One end (left or right end) of the bottom wall 105 of the inner liner 10 avoids the compressor below and protrudes upward 701 to form a step 1051. The cover plate 20 is placed on the step 1051 to form a cooling cavity 30. The cooling cavity 30 defines the evaporator chamber 302 and the foreign matter chamber 301. The evaporator chamber 302 and the foreign matter chamber 301 are arranged along the width direction of the inner liner 10. The foreign matter chamber 301 is close to the second side wall 505 and has a return air outlet 201. Specifically, the top of the foreign object compartment 301 is provided with a first return air vent 2011, the side of the foreign object compartment 301 is provided with a second return air vent 2012, and the bottom of the foreign object compartment 301 is provided with a third return air vent 2013. This allows the freezer to return air from multiple directions, increasing the air volume and ensuring that the air from each area of ​​the internal space 106 can return to the refrigeration chamber 30 for recycling, avoiding the formation of eddies and wasting air volume. Driven by the fan 50, the airflow in the storage cavity 1061 first flows into the foreign matter compartment 301 through three return air inlets 201, and then flows from the foreign matter compartment 301 to the evaporator compartment 302. After the airflow exchanges heat with the evaporator 40 in the evaporator compartment 302, it flows to the air supply duct 501 and air outlet 502 located on the first side wall 504. The fan 50 is located in the air supply duct 501, which can reduce the loss of airflow from the fan 50 and reduce resistance. The air supply duct 501 extends along the length of the inner liner 10, so that air can be supplied along the entire length of the inner liner 10. Multiple air supply ducts 501 are arranged at intervals along the height of the first side wall 504, which can increase the air volume in the height of the internal space 106.

[0119] Optionally, the side wall closest to the refrigeration chamber 30 in the left side wall 103 and right side wall 104 is defined as the third side wall 506. When the freezer includes the connector 403, the connector 403 is connected to the third side wall 506. Specifically, the first bent portion 4031 contacts the surface of the third side wall 506 and is connected thereto.

[0120] Optionally, the opening of the first bend 4031 faces away from the evaporator tube 402 to facilitate the connection between the first bend 4031 and the third sidewall 506.

[0121] Optionally, the third sidewall 506 protrudes towards the refrigeration cavity 30 to form a boss 3025. The boss 3025 is located on one side of the evaporator 40. When the freezer includes a connector 403, the connector 403 connects the first evaporator fin 4011 and the boss 3025, thereby connecting the evaporator 40 to the inner liner 10. Specifically, the connecting part does not include the first bending part 4031. The first evaporator fin 4011 extends to the boss 3025. One end of the second bending part 4032 is connected to the first evaporator fin 4011, and the other end of the second bending part 4032 is connected to the side of the boss facing the evaporator 40. This also enables the connection between the evaporator 40 and the inner liner 10, increasing the connection stability.

[0122] Optionally, such as Figure 10 As shown, the freezer also includes a drip tray 70, which is located below the evaporator 40 and connected to it. This connection strengthens the bond between the evaporator 40 and the drip tray 70. After the evaporator 40 and drip tray 70 are connected, they are placed inside the internal space 106. This ensures that even if the operator moves the piping, the evaporator 40 and drip tray 70 will move together without affecting their installation accuracy, preventing misalignment and ultimately improving the reliability of the freezer structure and the stability of the system.

[0123] Optionally, the drip tray 70 can be detachably connected to the evaporator 40. This facilitates the inspection, disassembly, cleaning, and replacement of both the drip tray 70 and the evaporator 40.

[0124] In one specific embodiment, such as Figure 11 As shown, the upper surface of the water receiving tray 70 has a protrusion 701 that can be inserted between adjacent evaporation fins 401 to connect the evaporator 40 and the inner liner 10. The evaporation fins 401 are spaced apart, and the protrusion 701 of the water receiving tray 70, when inserted into adjacent evaporation fins 401, can serve as a connection and restrict relative movement between the evaporator 40 and the water receiving tray.

[0125] Optionally, the protrusion 701 is configured with a limiting groove 702. When the protrusion 701 is inserted between adjacent evaporation fins 401, the evaporation tube 402 is located within the limiting groove 702, thereby restricting the movement of the evaporator 40 relative to the water receiving tray 70. In this embodiment, the limiting groove 702 can both avoid the evaporation tube 402 and serve a connecting function.

[0126] Optionally, the limiting groove 702 includes a first limiting groove 7021, the opening of which faces upward. Taking the evaporation fins 401 extending along the width direction of the inner liner 10 as an example, the evaporation tube 402 passes through multiple fins. Therefore, the evaporation tube 402 extends along the length direction of the inner liner 10, and the protrusion 701 can restrict the movement of the evaporator 40 relative to the water receiving tray 70 along the length direction (i.e., the left-right direction) of the inner liner 10. The first limiting groove 7021 restricts the evaporation tube 402, and therefore, the upward opening of the first limiting groove 7021 can restrict the movement of the evaporator 40 relative to the water receiving tray 70 along the width direction (i.e., the front-back direction) of the inner liner 10.

[0127] Optionally, the limiting groove 702 includes a second limiting groove 7022, the opening of which faces horizontally and can restrict the evaporator tube 402 from moving vertically. The opening of the second limiting groove 7022, facing horizontally, can restrict the evaporator 40 from moving vertically.

[0128] Optionally, there are multiple protrusions 701, which are arranged sequentially and at intervals along the circumference of the water receiving tray 70. The number of limiting grooves 702 is the same as the number of protrusions 701 and corresponds one-to-one. The multiple protrusions 701 include a first protrusion and a second protrusion. The first protrusion is provided with a first limiting groove 7021, and the second protrusion is provided with a second limiting groove 7022. In this way, the movement of the evaporator 40 in six directions—front-back, left-right, and up-down—can be restricted by the protrusions 701, the first limiting groove 7021, and the second limiting groove 7022.

[0129] In another specific embodiment, such as Figure 10 As shown, the evaporator 40 has a first screw hole 404, and the water receiving tray 70 has a second screw hole. Fasteners pass through the first screw hole 404 and the second screw hole to connect the evaporator 40 and the water receiving tray 70. In this embodiment, the evaporator 40 and the water receiving tray 70 can also be connected by screws, which is simple to operate, easy to manufacture, and has a low cost.

[0130] Optionally, the evaporator fin 401 protrudes to form a connecting portion, and the connecting portion is provided with a first screw hole 404, which corresponds to a second screw hole. Both ends of the evaporator fin 401 are provided with the first screw hole 404, which can increase the connection stability between the evaporator fin 401 and the water receiving tray 70.

[0131] Optionally, the plurality of evaporation fins 401 include a second evaporation fin, which is located on the side of the evaporator 40 facing the storage cavity 1061. Both the first evaporation fin 4011 and the second evaporation fin are provided with a first screw hole 404, which further increases the connection strength between the evaporator 40 and the water receiving tray 70.

[0132] Optionally, the evaporator 40 is connected to or abuts against the inner liner 10. The evaporator 40 can be connected to the inner liner 10 via the aforementioned connector 403. This increases the connection strength between the evaporator 40, the drip tray 70, and the inner liner 10, preventing misalignment between them. The evaporator 40 can also be limited by the aforementioned limiting part 3023, which also prevents misalignment between the drip tray 70, the inner liner 10, and the evaporator 40.

[0133] Optionally, the connector 403 is screwed to the inner liner 10. In practical applications, the evaporator 40 and the drip tray 70 are first connected, and then placed together into the evaporator chamber 302. The screw hole of the first bend 4031 of the connector 403 corresponds to the screw hole of the inner liner 10, thus connecting the evaporator 40 and the inner liner 10. The evaporator 40 and the inner liner 10 are further restrained by the limiting part 3023, preventing the evaporator 40 from moving within the inner liner 10 and reducing the connection pressure on the connector 403. This strong fixation between the three components improves the welding efficiency of the foamed assembly and reduces production costs.

[0134] It should be noted that the connector 403 and the limiting part 3023 can be provided simultaneously, or only one of them can be provided. The ability to restrict the movement between the evaporator 40 and the inner liner 10 is an optional embodiment of this application.

[0135] Optionally, the drip tray 70 is connected to or abuts against the inner tank 10. This also allows for the connection and fixation of the evaporator 40, the inner tank 10, and the drip tray 70.

[0136] Optionally, the freezer also includes a heating element located between the drip tray 70 and the evaporator 40. The heating element is used to heat the evaporator 40 to facilitate defrosting.

[0137] In this embodiment, the water receiving tray 70 can prevent the heating tube from directly contacting the bottom wall of the cooling chamber 30, and can also make the heat conduction uniform, thereby improving the defrosting effect of the evaporator 40.

[0138] Optionally, the water tray 70 can be made of aluminum, which is easy to process, easy to conduct heat, and low in cost.

[0139] Optionally, when the upper surface of the water receiving tray 70 has protrusions 701 and limiting grooves 702, it can be directly stamped from a straight aluminum plate, which is simple to process, has a high forming rate, and low cost. There is no risk of crevice corrosion, and it is easy to operate.

[0140] Optionally, such as Figure 3 and Figure 7 As shown, the fan 50 is at least partially located within the air supply duct 501, and the cover plate 20 is connected between the first side wall 504 and the second side wall 505, corresponding to the cooling chamber 30. Alternatively, the cover plate 20 can be connected between the left side wall 103 and the right side wall 104. One end of the cover plate 20 is connected to the first side wall 504, and this end is higher than the highest point of the fan 50. Along the direction away from the fan 50, the cover plate 20 is at least partially inclined downwards to increase the space above it.

[0141] In this embodiment, one end of the cover plate 20 is higher than the highest end of the fan 50, allowing airflow within the refrigeration chamber 30 to flow into or out of the fan 50. The height of the evaporator 40 decreases along the direction away from the fan 50, thus the cover plate 20 tilts downwards, increasing the space above it. A rack can be installed above the cover plate 20, and the height of the rack can be increased, thereby increasing the storage capacity of the freezer.

[0142] Optionally, the cover plate 20 includes a first plate segment 2021 and a second plate segment 2022. One end of the first plate segment 2021 is connected to the first sidewall 504. One end of the second plate segment 2022 is connected to the other end of the first plate segment 2021, and the other end is connected to the second sidewall 505. The first plate segment 2021 is inclined downwards in the direction away from the fan 50, and there is an angle between the first plate segment 2021 and the first sidewall 504.

[0143] In this embodiment, the first plate segment 2021 is used to avoid the fan 50 and to guide the airflow flowing into and out of the fan 50. There is an angle between the first plate segment 2021 and the first sidewall 504, which increases the space above the first plate segment 2021.

[0144] Optionally, the angle between the first plate segment 2021 and the first sidewall 504 can range from 0° to 20°. The angle between the first plate segment 2021 and the second sidewall 505 cannot be too large, as an excessively large angle would occupy the space above the cover plate 20. Specifically, the angle between the first plate segment 2021 and the first sidewall 504 can be 5°, 10°, 15°, or 20°.

[0145] Optionally, the second panel segment 2022 extends horizontally. This avoids the second panel segment 2022 occupying the space above the cover plate 20, thus increasing storage space.

[0146] Optionally, the cover plate 20 further includes an arc-shaped segment 2023, which connects the other end of the first plate segment 2021 and one end of the second plate segment 2022, with the opening of the arc-shaped segment 2023 facing upward.

[0147] In this embodiment, the first plate segment 2021 and the second plate segment 2022 are smoothly connected by the arc segment 2023, which makes the airflow in the cooling cavity 30 flow smoothly and avoids the loss of air volume when flowing through the bend.

[0148] Optionally, the second panel segment 2022 extends horizontally. In this way, the second panel segment 2022 will not occupy the space above the cover plate 20, thereby increasing the storage space. It should be noted that the horizontal extension of the second panel segment 2022 in this application is not a strict horizontal extension. The second panel segment 2022 may also have an angle with the horizontal direction, or the second panel segment 2022 may be curved, wavy, or other shapes.

[0149] Optionally, the top plate 202 of the cover plate 20 includes a first plate segment 2021, a second plate segment 2022, and an arc-shaped segment 2023.

[0150] Optionally, one end of the cover plate 20 is sealed to the first side wall 504. This prevents airflow leakage at the connection between the cooling chamber 30 and the air supply duct 501, thus avoiding airflow loss.

[0151] The height of the evaporator 40 is less than the height of the fan 50, so that the cover plate 20 can tilt downwards to make room above. Specifically, the length of the evaporator 40 extends along the length or width of the inner tank, which can reduce the height of the evaporator 40.

[0152] Optionally, the upper part of the wall of the step 1051 facing the storage cavity 1061 is recessed in the direction away from the storage cavity 1061 to form a recessed part. The side plate 203 of the cover plate 20 is placed on the recessed part, and the outer wall surface of the side plate 203 is flush with the lower part of the wall of the step 1051 facing the storage cavity 1061. This can increase the integrity and aesthetics of the cooling cavity 30.

[0153] Optionally, the cover plate 20 is detachably connected to the inner liner 10. Specifically, the side plate 203 is connected to the wall of the step 1051 facing the storage cavity 1061, and can be connected by screws.

[0154] In one specific embodiment, a fan 50 is disposed within the first side wall 504, and a cover plate 20 is placed above the step 1051 to form a cooling chamber 30. The fan 50 corresponds to the cooling chamber 30, and the evaporator 40 is located above the step 1051. The height of the fan 50 is higher than that of the evaporator 40, enabling the fan 50 to drive the airflow in the circulating air path. The evaporator 40 extends along the length or width of the inner liner and is placed on the step 1051, which reduces the height of the evaporator 40 and thus reduces the height of the cooling chamber 30. The cover plate 20 is partially inclined in the direction away from the fan 50, which can avoid creating space above the cover plate 20, facilitating the increase of storage space above the cover plate 20 and improving ease of use.

[0155] The foregoing description and accompanying drawings fully illustrate 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. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. 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 its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A freezer, characterized in that, include: The inner liner encloses the interior space; A cover plate is located within the internal space, dividing the internal space into a storage cavity and a cooling cavity. The cooling cavity has multiple return air vents that connect the storage cavity and the cooling cavity. An air supply vent is located within the storage cavity, connecting to the air outlet of the cooling cavity. This allows airflow from the storage cavity to flow into the cooling cavity through the return air vents, be cooled in the cooling cavity, and then return to the storage cavity through the air supply vents. The return air vents are located at the top, bottom, and sides of the cooling cavity. The bottom wall of the inner liner protrudes towards the cooling cavity, forming a step. A compressor is placed below the step, and the cover plate covers the step, together with the step, enclosing the cooling cavity. An evaporator is located inside the refrigeration chamber and above the step; The cover plate includes: A top plate is located above the refrigeration chamber, and the top plate has a first return air vent. A side panel is provided at one end of the top panel facing the storage cavity, and the side panel extends downward. The side panel has a second return air vent, which includes a first return air vent and a second return air vent. There is a gap between the side plate and the wall of the step facing the storage cavity. The gap is connected to the refrigeration cavity. The lower end of the gap forms a third return air inlet. The third return air inlet connects the gap and the storage cavity. The return air inlet includes the third return air inlet.

2. The freezer according to claim 1, characterized in that, Also includes: A partition is provided above the first return air inlet and connected to the top plate. The side wall of the partition is provided with ventilation holes. The airflow in the storage cavity flows through the ventilation holes to the first return air inlet, so that the partition can prevent foreign objects from entering the refrigeration cavity through the first return air inlet.

3. The freezer according to claim 1, characterized in that, Also includes: A deflector is provided at the second return air inlet. Along the direction from the storage cavity to the cooling cavity, the deflector is tilted upward to guide the airflow flowing in through the second return air inlet to flow upward.

4. The freezer according to claim 1, characterized in that, The sidewall of the step is recessed in the direction away from the storage cavity to form a vertical groove, and the side plate is placed on the groove to form the gap.

5. The freezer according to claim 1, characterized in that, The first return air inlet corresponds to the second return air inlet, the third return air inlet corresponds to the second return air inlet, and the third return air inlet is located below the second return air inlet.

6. The freezer according to claim 1, characterized in that, The interior of the refrigeration chamber defines a connected evaporator compartment and a foreign matter compartment, and the multiple return air vents are all corresponding to and connected to the foreign matter compartment; The evaporator is located inside the evaporator compartment.

7. The freezer according to claim 6, characterized in that, The bottom wall of the evaporator compartment is provided with a drain hole, and the evaporator is set at an angle so that the defrosting water of the evaporator is discharged from the drain hole.

8. The freezer according to any one of claims 1 to 7, characterized in that, The inner liner includes: The first sidewall defines an air supply duct with an air outlet, the air inlet of the air supply duct is connected to the air outlet of the cooling chamber, and the air outlet is connected to the storage chamber. The second sidewall is disposed opposite to the first sidewall and is disposed along the width direction of the inner liner. The fan can drive the airflow in the cooling chamber to the air supply duct, and then through the air outlet to the storage chamber for cooling, and drive the cooled airflow back to the cooling chamber through the return air outlet; The distance between the return air vent and the first sidewall is greater than the distance between the return air vent and the second sidewall.

9. The freezer according to claim 8, characterized in that, The fan is located within the air supply duct; and / or The first sidewall includes a sidewall body and an air outlet cover. When the first sidewall defines the air supply duct, the sidewall body protrudes in a direction away from the internal space to form the air supply duct, and the air outlet cover is disposed on the side of the air supply duct facing the internal space.

10. The freezer according to claim 8, characterized in that, The inner liner includes a bottom wall, and the freezer includes a door. The upper surface of the bottom wall and / or the lower surface of the door are provided with air ducts.

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