Air-cooled refrigerator

Abstract

The utility model belongs to the technical field of refrigerators, and specifically provides an air-cooled refrigerator. The utility model aims to solve the problem that the existing air-cooled refrigerator is affected in terms of storage due to the large thickness of the air supply duct. To this end, the air-cooled refrigerator of the utility model comprises a box, an evaporator and at least one refrigeration fan. The box defines a refrigeration compartment, a first air supply duct and a first storage compartment which are fluidly connected in sequence, and the portion of the first air supply duct close to the refrigeration compartment is arranged as a trumpet-shaped structure, and the large mouth of the trumpet-shaped structure is located on the side close to the first air supply duct. The evaporator is arranged in the refrigeration compartment. At least one refrigeration fan is arranged in the refrigeration compartment and is located on the front side or the rear side of the evaporator. The utility model avoids arranging the refrigeration fan in the first air supply duct, thereby reducing the thickness of the first air supply duct, thereby increasing the storage space of the first storage compartment, and improving the storage performance of the air-cooled refrigerator.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigerators, and specifically provides an air-cooled refrigerator. Background Art

[0002] Air-cooled refrigerators are refrigeration and freezing equipment that use forced convection cooling. Its working principle is to use the built-in refrigeration fan to evenly blow the cold air cooled by the evaporator to every corner of the air-cooled refrigerator, and reduce and maintain the temperature inside the box through the continuous circulation of cold air.

[0003] In existing air-cooled refrigerators, the refrigeration fan is generally arranged in the air supply duct, resulting in a complex structure of the air supply duct. At the same time, due to the large thickness of the refrigeration fan, the thickness of the air supply duct is also large, which occupies more space in the air-cooled refrigerator, affecting the storage of the air-cooled refrigerator. At the same time, the air-cooled refrigerator also has the problem of high noise during refrigeration. Utility Model Content

[0004] One purpose of the utility model is to solve the problem that the existing air-cooled refrigerator is affected in terms of storage due to the large thickness of the air supply duct.

[0005] Another purpose of the utility model is to reduce the noise of the air-cooled refrigerator during refrigeration.

[0006] To achieve the above object, the utility model provides an air-cooled refrigerator, comprising:

[0007] The box body defines a refrigeration compartment, a first air supply duct and a first storage compartment which are fluidly connected in sequence, wherein a portion of the first air supply duct close to the refrigeration compartment is configured as a trumpet-shaped structure, and a large opening of the trumpet-shaped structure is located on a side close to the first air supply duct;

[0008] an evaporator, arranged in the refrigeration compartment;

[0009] At least one refrigeration fan is arranged in the refrigeration compartment and located in front of or behind the evaporator.

[0010] Optionally, the first air supply duct includes a contraction section, so that the first air supply duct forms the trumpet-shaped structure on a side of the contraction section close to the refrigeration compartment.

[0011] Optionally, the refrigeration compartment is arranged at the bottom side of the first storage compartment, and the first air supply duct is arranged at the rear sides of the refrigeration compartment and the first storage compartment.

[0012] Optionally, the box body includes an inner tank and a partition arranged in the inner tank, the partition divides the inner tank into the refrigeration compartment and the first storage compartment; a return air grille extending downward is provided at the front end of the partition so that the first storage compartment and the refrigeration compartment are also connected through the return air grille.

[0013] Optionally, the at least one refrigeration fan is arranged on the front side of the evaporator and is located between the evaporator and the return air grille.

[0014] Optionally, the air-cooled refrigerator further comprises a fan bracket, the at least one refrigeration fan is mounted on the fan bracket, and the fan bracket is abutted against or disposed adjacent to the return air grille.

[0015] Optionally, the air-cooled refrigerator further comprises a drawer installed at the bottom of the first storage compartment, and a value range of an angle between a bottom wall of the drawer and a horizontal plane is selected from any value between 5° and 12°.

[0016] Optionally, the angle between the bottom wall of the drawer and the horizontal plane is 8°.

[0017] Optionally, the box body further defines a second storage compartment and a second air supply duct connecting the second storage compartment with the first air supply duct.

[0018] Optionally, the second storage compartment is arranged on a side of the first storage compartment away from the refrigeration compartment.

[0019] Based on the foregoing description, those skilled in the art will understand that, in the aforementioned technical solution of the present invention, by arranging the refrigeration fan in the refrigeration compartment, it is avoided to arrange the refrigeration fan in the first air supply duct, thereby reducing the thickness of the first air supply duct, thereby increasing the storage space of the first storage compartment, and improving the storage performance of the air-cooled refrigerator.

[0020] Furthermore, by setting the portion of the first air supply duct close to the refrigeration compartment as a trumpet-shaped structure, and making the large mouth of the trumpet-shaped structure located on the side close to the first air supply duct, compared with the existing air-cooled refrigerator, not only the inlet area of ​​the first air supply duct is increased, but also the first air supply duct can absorb more air volume. Moreover, the side of the trumpet-shaped structure away from the first air supply duct is gradually closed, which also increases the flow speed of the airflow in the first air supply duct, improves the uniformity of the airflow, and appropriately reduces the turbulence intensity of the airflow.

[0021] Furthermore, by arranging a partition in the inner tank, the inner tank is divided into a refrigeration compartment and a first storage compartment by the partition. By arranging a return air grille extending downward at the front end of the partition, the first storage compartment and the refrigeration compartment are also connected through the return air grille, so that the air can circulate between the refrigeration compartment and the first storage compartment under the action of the refrigeration fan.

[0022] Furthermore, since the compressor and the radiator are usually arranged at the rear side of the bottom of the refrigerator, the utility model arranges at least one refrigeration fan at the front side of the evaporator and makes at least one refrigeration fan located between the evaporator and the return air grille, thereby avoiding the refrigeration fan from overlapping with the compressor in the vertical direction, thereby reducing the height of the rear part of the refrigeration compartment and making the top wall of the refrigeration compartment flatter.

[0023] Furthermore, by installing the refrigeration fan on the fan bracket, the fan bracket is abutted against or arranged adjacent to the return air grille, thereby reducing the air suction resistance of the refrigeration fan and improving the air suction efficiency of the refrigeration fan.

[0024] Furthermore, by installing a drawer at the bottom of the first storage compartment and making the angle between the bottom wall of the drawer and the horizontal plane range from 5° to 12°, especially 8°, not only the structure of the drawer is simplified but also the volume of the drawer is increased.

[0025] Furthermore, by defining a second storage compartment and a second air supply duct connecting the second storage compartment with the first air supply duct, the air-cooled refrigerator can cool at least two storage compartments through the same refrigeration compartment while shortening the length of the air supply duct, making the layout of the air-cooled refrigerator more reasonable and the structure more compact.

[0026] Other beneficial effects of the present invention will be described in detail below in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand the improved purposes, features and advantages of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solution of the utility model, some embodiments of the utility model will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that the same figure number indicates the same or similar parts or components in different drawings; the drawings of the utility model are not necessarily drawn to scale. In the drawings:

[0028] Figure 1 It is a partial axonometric view of an air-cooled refrigerator in some embodiments of the utility model;

[0029] Figure 2 yes Figure 1 Axonometric view of the wind-cooled refrigerator section along the AA direction;

[0030] Figure 3 yes Figure 1 The axonometric view of the liner of the blow-freezer is partially hidden;

[0031] Figure 4 yes Figure 3 Another axonometric view of the blow-cooled refrigerator section;

[0032] Figure 5 It is a cross-sectional schematic diagram of an air-cooled refrigerator in other embodiments of the utility model. DETAILED DESCRIPTION

[0033] It should be understood by those skilled in the art that the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments of the present invention, and the embodiments are intended to explain the technical principles of the present invention, rather than to limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present invention.

[0034] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] Furthermore, it should be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. For example, the terms "install", "connect", "connect" and "fix", unless otherwise specifically described, can specifically be any feasible connection form such as bolt connection, screw connection, welding, plug-in, riveting, melting, and clamping.

[0036] In addition, it should be noted that in the description of the present utility model, the terms "cold" and "heat" are two descriptions of the same physical state. That is, the higher the "cold" of a certain target object (such as an evaporator, air, condenser, etc.), the lower the "heat" it has, and the lower the "cold" it has, the higher the "heat" it has. A certain target object will release "heat" while absorbing "cold", and will absorb "heat" while releasing "cold". A certain target object stores "cold" or "heat" in order to keep the current temperature of the target object. "Refrigeration" and "heat absorption" are two descriptions of the same physical phenomenon, that is, a certain target object (such as an evaporator) will absorb heat while cooling.

[0037] Finally, it should be noted that in the description of the present invention, each functional module can be a physical module composed of multiple structures, components or electronic components, or a virtual module composed of multiple programs; each functional module can be a module that exists independently of each other, or a module divided according to the function of an integral module. It should be understood by those skilled in the art that, under the premise of being able to implement the technical solution described in the present invention, the composition, implementation and positional relationship of each functional module will not deviate from the technical principle of the present invention no matter how they change, and therefore should fall within the protection scope of the present invention.

[0038] Refer to the following Figures 1 to 5 The air-cooled refrigerator 100 of the present invention is described by way of example.

[0039] It should be noted that, for the convenience of description and to enable those skilled in the art to quickly understand the technical solution of the present invention, the following text only describes the technical features that are strongly related (directly or indirectly related) to the technical problem and / or technical concept to be solved by the present invention, and does not describe the technical features that are weakly related to the technical problem and / or technical concept to be solved by the present invention. Since the technical features with a weaker degree of correlation belong to the common knowledge in the field, even if the present invention does not describe the features with a weaker degree of correlation, it will not lead to insufficient disclosure of the present invention.

[0040] For example, the air-cooled refrigerator 100 must include components such as a compressor and a condenser. Since these components are well known to those skilled in the art and are not related or directly related to the technical problem to be solved by the present invention, the present invention will not elaborate on them.

[0041] like Figures 1 to 4 As shown, in some embodiments of the present invention, the air-cooled refrigerator 100 includes a cabinet 110 , an evaporator 130 and at least one refrigeration fan 140 .

[0042] The housing 110 defines a refrigeration compartment 1101, a first air supply duct 1102 and a first storage compartment 1103 which are fluidically connected in sequence. The portion of the first air supply duct 1102 close to the refrigeration compartment 1101 is configured as a trumpet-shaped structure 11021, and a large opening of the trumpet-shaped structure 11021 is located on a side close to the first air supply duct 1102.

[0043] The evaporator 130 is disposed in the refrigeration compartment 1101 .

[0044] At least one refrigeration fan 140 is arranged in the refrigeration compartment 1101 and is located in front of or behind the evaporator 130 .

[0045] Those skilled in the art will appreciate that, in some embodiments of the present invention, by arranging the refrigeration fan 140 in the refrigeration compartment 1101, it is avoided to arrange the refrigeration fan 140 in the first air supply duct 1102, thereby reducing the thickness of the first air supply duct 1102, thereby increasing the storage space of the first storage compartment 1103, and improving the storage performance of the air-cooled refrigerator 100.

[0046] Furthermore, by setting the portion of the first air supply duct 1102 close to the refrigeration compartment 1101 as a trumpet-shaped structure 11021, and making the large opening (the larger of the two openings) of the trumpet-shaped structure 11021 located on the side close to the first air supply duct 1102, compared with the existing air-cooled refrigerator 100, not only the inlet area of ​​the first air supply duct 1102 is increased, but also the first air supply duct 1102 can absorb more air volume. Moreover, the side of the trumpet-shaped structure 11021 away from the first air supply duct 1102 is gradually closed, which also increases the flow speed of the airflow in the first air supply duct 1102, improves the uniformity of the airflow, and appropriately reduces the turbulence intensity of the airflow.

[0047] like Figure 3 and Figure 4 As shown, in some embodiments of the present invention, the first air supply duct 1102 includes a contraction section 11022 , so that the first air supply duct 1102 forms a trumpet-shaped structure 11021 on a side of the contraction section 11022 close to the refrigeration compartment 1101 .

[0048] Those skilled in the art can understand that, in some embodiments of the present invention, the first air supply duct 1102 forms a trumpet-shaped structure 11021 through the contraction section 11022, which can effectively reduce the material of the first air supply duct 1102 and reduce the production cost.

[0049] It should be noted that, in the present invention, the first air supply duct 1102 includes Figures 1 to 4The physical entity structure shown in the figure also includes a spatial structure without an entity structure located within the physical structure.

[0050] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the refrigeration compartment 1101 is disposed at the bottom side of the first storage compartment 1103 , and the first air supply duct 1102 is disposed at the rear side of the refrigeration compartment 1101 and the first storage compartment 1103 .

[0051] Those skilled in the art will appreciate that by disposing the refrigeration compartment 1101 at the bottom side of the first storage compartment 1103, the first storage compartment 1103 is positioned higher, making it easier for users to take in and put in food or other items.

[0052] like Figures 1 to 4 As shown, in some embodiments of the present invention, the box body 110 further includes an inner liner 111 and a partition 112 disposed in the inner liner 111 .

[0053] The partition 112 divides the inner container 111 into a refrigeration compartment 1101 and a first storage compartment 1103 .

[0054] Furthermore, a return air grille 1121 extending downward is provided at the front end of the partition 112 , so that the first storage compartment 1103 and the refrigeration compartment 1101 are also connected through the return air grille 1121 .

[0055] like Figure 2 and Figure 4 As shown, in some embodiments of the present invention, all refrigeration fans 140 are arranged in front of the evaporator 130 and located between the evaporator 130 and the return air grille 1121 .

[0056] In addition, those skilled in the art may also dispose all or part of the refrigeration fans 140 at the rear side of the evaporator 130 as needed.

[0057] It should be noted that, in the present invention, the refrigeration fan 140 can be any feasible fan such as a cross-flow fan, an axial flow fan, a centrifugal fan, etc.

[0058] Continue reading Figure 2 and Figure 4 In some embodiments of the present invention, the air-cooled refrigerator 100 further includes a fan bracket 150 , and at least one refrigeration fan 140 is mounted on the fan bracket 150 , and the fan bracket 150 is disposed in contact with or adjacent to the return air grille 1121 .

[0059] Exemplarily, the fan bracket 150 is fixed to the bottom wall of the refrigeration chamber 1101, that is, fixed to the bottom wall of the inner container 111, by bolts or screws. The return air grille 1121 abuts against the fan bracket 150.

[0060] It is understandable to those skilled in the art that by placing the fan bracket 150 in contact with or adjacent to the return air grille 1121 , the air suction resistance of the refrigeration fan 140 is reduced and the air suction efficiency of the refrigeration fan 140 is improved.

[0061] Return to view Figure 2 A drain port (not marked in the figure) is provided at the bottom of the inner tank 111. In the front-to-back direction of the air-cooled refrigerator 100, the bottom surface of the inner tank 111 is tilted downward toward the direction close to the drain port, so that the condensed water and / or defrosted water in the refrigeration compartment 1101 flows toward the drain port. The drain port leads to the evaporating dish in the compressor compartment of the air-cooled refrigerator 100 through a pipeline or a pipe to guide the condensed water and / or defrosted water to the evaporating dish. The water in the evaporating dish evaporates into water vapor under the action of high-temperature components such as the compressor and the condenser.

[0062] Furthermore, the evaporator 130 is also tilted downward in a direction close to the drain port, so that the condensed water and / or defrosted water on the evaporator 130 flows toward the drain port.

[0063] like Figures 1 to 4 As shown, in some embodiments of the present invention, the air-cooled refrigerator 100 further includes a drawer 120 installed at the bottom of the first storage compartment 1103, and the angle between the bottom wall of the drawer 120 and the horizontal plane is selected from any value between 5° and 12°.

[0064] Exemplarily, the angle between the bottom wall of the drawer 120 and the horizontal plane is 8°.

[0065] In addition, those skilled in the art may also set the angle between the bottom wall of the drawer 120 and the horizontal plane to any other feasible value, such as 5°, 7°, 9°, 10°, 12°, etc., as needed.

[0066] It will be understood by those skilled in the art that by installing the drawer 120 at the bottom of the first storage compartment 1103 and selecting the angle between the bottom wall of the drawer 120 and the horizontal plane to be any value between 5° and 12°, especially 8°, not only the structure of the drawer 120 is simplified but also the volume of the drawer 120 is increased.

[0067] Those skilled in the art can understand that, since the compressor and the radiator are usually arranged at the rear side of the bottom of the refrigerator, the utility model avoids the overlap of the refrigeration fan 140 with the compressor in the vertical direction by arranging at least one refrigeration fan 140 at the front side of the evaporator 130 and arranging at least one refrigeration fan 140 between the evaporator 130 and the return air grille 1121, thereby reducing the height of the rear part of the refrigeration compartment 1101 and making the top wall of the refrigeration compartment 1101 more gentle. In addition, the angle between the bottom wall of the drawer 120 and the horizontal plane can be as small as possible.

[0068] At the same time, since the refrigeration fan 140 is no longer provided between the first air supply duct 1102 and the refrigeration compartment 1101, the connection between the first air supply duct 1102 and the refrigeration compartment 1101 is no longer limited by the refrigeration fan 140, and the size can be made large enough to reduce wind resistance.

[0069] like Figure 5 As shown, in other embodiments of the present invention, different from some embodiments described above, the box body 110 is further defined by a second storage compartment 1104 and a second air supply duct 1105 connecting the second storage compartment 1104 with the first air supply duct 1102 .

[0070] Furthermore, the second storage compartment 1104 is disposed on a side of the first storage compartment 1103 away from the refrigeration compartment 1101 .

[0071] In addition, those skilled in the art may also arrange the second storage compartment 1104 and the first storage compartment 1103 in the horizontal direction as needed.

[0072] Furthermore, although not explicitly shown in the figure, the air-cooled refrigerator 100 includes a return air duct connecting the second storage compartment 1104 with the refrigeration compartment 1101 .

[0073] Exemplarily, a portion of the return air duct is formed on the cabinet 110 of the air-cooled refrigerator 100, and another portion of the return air duct is formed on the door of the air-cooled refrigerator 100, and the door is used to open and shield the first storage compartment 1103. When the door is closed, the return air duct formed on the door communicates with the return air duct formed on the cabinet 110. Moreover, when the door is closed, the return air duct formed on the door is away from one end of the return air duct formed on the cabinet 110 and is aligned with the inlet of the return air grille 1121.

[0074] It should be noted that, in the present invention, the first storage compartment 1103 can be a freezer compartment, the first storage compartment 1103 can also be a refrigeration compartment, or the first storage compartment 1103 can also be a variable temperature compartment. The second storage compartment 1104 can be a freezer compartment, the second storage compartment 1104 can also be a refrigeration compartment, or the second storage compartment 1104 can also be a variable temperature compartment.

[0075] When the second air supply duct 1105 connects the second storage compartment 1104 with the first air supply duct 1102, the first storage compartment 1103 and the second storage compartment 1104 may be in one of the following situations:

[0076] When the first storage compartment 1103 is a freezing compartment, the second storage compartment 1104 may be a variable temperature compartment or a refrigerating compartment.

[0077] When the first storage room 1103 is a variable temperature room, the second storage room 1104 can be a variable temperature room or a refrigerated room.

[0078] When the first storage compartment 1103 is a refrigerating compartment, the second storage compartment 1104 may be a refrigerating compartment.

[0079] Furthermore, although not shown in the figure, in the present invention, the air-cooled refrigerator 100 must include a complete refrigeration system. In simple terms, the refrigeration system must include a compressor, a condenser, a pressure reducing component and an evaporator 130. Among them, the pressure reducing component can be a capillary tube or an electronic expansion valve.

[0080] When the refrigeration system is working, the refrigerant in it circulates along the following path: compressor → condenser → pressure reduction component → evaporator 130 → compressor. The refrigerant flowing out of the compressor is in a high-temperature and high-pressure state. It is cooled when flowing through the condenser and becomes a low-temperature and high-pressure state. When the low-temperature and high-pressure refrigerant flows through the refrigeration pressure reduction component, the pressure decreases and expands, becoming a low-temperature and low-pressure state. The low-temperature and low-pressure refrigerant absorbs heat in the evaporator 130 and becomes a high-temperature and low-pressure state. When the high-temperature and low-pressure gaseous refrigerant flows through the compressor, it is compressed again into a high-temperature and high-pressure state.

[0081] When the refrigerant flows through the compressor, it is compressed into a high-temperature and high-pressure state (liquid or gas-liquid mixed state).

[0082] When the refrigerant flows through the condenser, it dissipates heat through the condenser and is cooled to a low temperature and high pressure state (liquid or gas-liquid mixed state).

[0083] When the refrigerant flows through the pressure reducing component, it is throttled and reduced in pressure to a low-temperature and low-pressure state (liquid or gas-liquid mixed state).

[0084] When the refrigerant flows through the evaporator 130 , it absorbs heat from the external environment through the evaporator 130 and is heated to a high-temperature and low-pressure state (gaseous state).

[0085] It should be noted that the aforementioned states of the refrigerant in the compressor, condenser, pressure reducing component, and evaporator 130, i.e., the high temperature, low temperature, high pressure, and low pressure of the refrigerant, are the states of the refrigerant after it enters the corresponding components or flows out of the corresponding components compared to the states before it flows into the corresponding components.

[0086] So far, the technical solution of the utility model has been described in combination with the above multiple embodiments, but it is easy for those skilled in the art to understand that the protection scope of the utility model is not limited to these specific embodiments. Without departing from the technical principle of the utility model, those skilled in the art can split and combine the technical solutions in the above embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principle of the utility model will fall within the protection scope of the utility model.

[0087] Finally, it should be noted that the refrigerator of the present invention is a refrigerator in a broad sense, which not only includes the so-called refrigerator in a narrow sense, but also includes fresh-keeping equipment with refrigeration and / or freezing functions, such as refrigerators, freezers, etc.

[0088] In the present invention, the term "communication" means fluid communication, so as to allow fluid (such as air, liquid) to flow between two connected objects. And the "communication" can be to allow the fluid to flow between the two connected objects without leakage, or to allow the fluid to flow between the two connected objects with a little leakage.

[0089] Furthermore, in the description of the present invention, "the target object is connected / communicated with the inlet of a certain component" means that the target object is located upstream of the certain component on the path of fluid flow. Correspondingly, in the description of the present invention, "the target object is connected / communicated with the outlet of a certain component" means that the target object is located downstream of the certain component on the path of fluid flow.

[0090] Furthermore, in the description of the present utility model, "heat load" refers to the amount of heat received by a refrigerator per unit time, including the heat transferred from the external environment to the refrigerator compartment (including at least one of a freezer compartment, a refrigerated compartment and a variable temperature compartment) and the heat released by stored items in the refrigerator compartment (including food, medicines, drinks, biological reagents, bacterial colonies, chemical reagents, etc.).

Claims

1. An air-cooled refrigerator, characterized in that: include: The box body defines a refrigeration compartment, a first air supply duct and a first storage compartment which are fluidly connected in sequence, wherein a portion of the first air supply duct close to the refrigeration compartment is configured as a trumpet-shaped structure, and a large opening of the trumpet-shaped structure is located on a side close to the first air supply duct; an evaporator, arranged in the refrigeration compartment; At least one refrigeration fan is arranged in the refrigeration compartment and located in front of or behind the evaporator.

2. The air-cooled refrigerator according to claim 1, characterized in that: The first air supply duct includes a contraction section, so that the first air supply duct forms the trumpet-shaped structure on a side of the contraction section close to the refrigeration compartment.

3. The air-cooled refrigerator according to claim 1, characterized in that: The refrigeration compartment is arranged at the bottom side of the first storage compartment, and the first air supply duct is arranged at the rear sides of the refrigeration compartment and the first storage compartment.

4. The air-cooled refrigerator according to claim 3, characterized in that: The box body includes an inner container and a partition disposed in the inner container. The partition separates the inner tank into the refrigeration compartment and the first storage compartment; A return air grille extending downward is disposed at the front end of the partition, so that the first storage compartment and the refrigeration compartment are also connected through the return air grille.

5. The air-cooled refrigerator according to claim 4, characterized in that: The at least one refrigeration fan is disposed on the front side of the evaporator and is located between the evaporator and the return air grille.

6. The air-cooled refrigerator according to claim 5, characterized in that: The air-cooled refrigerator further comprises a fan bracket, the at least one refrigeration fan is mounted on the fan bracket, and the fan bracket is abutted against or disposed adjacent to the return air grille.

7. The air-cooled refrigerator according to any one of claims 3 to 6, characterized in that: The air-cooled refrigerator further comprises a drawer installed at the bottom of the first storage compartment, and the angle between the bottom wall of the drawer and the horizontal plane is in the range of any value selected from 5° to 12°.

8. The air-cooled refrigerator according to claim 7, characterized in that: The angle between the bottom wall of the drawer and the horizontal plane is 8°.

9. The air-cooled refrigerator according to any one of claims 1 to 6, characterized in that: The box body further defines a second storage compartment and a second air supply duct connecting the second storage compartment with the first air supply duct.

10. The air-cooled refrigerator according to claim 9, characterized in that: The second storage compartment is arranged at a side of the first storage compartment away from the refrigeration compartment.

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