Air duct assembly and refrigerator having the same

Abstract

This utility model provides an air duct assembly, including a housing and a partition structure. The housing has an air duct cavity and a connecting interface communicating with the air duct cavity. The partition structure divides the air duct cavity into at least a first air path and a second air path. The housing has a first air outlet structure and a second air outlet structure communicating with the air duct cavity. The second air outlet structure is located on the side of the first air outlet structure opposite to the connecting interface. The cross-sectional area of ​​the first air path is greater than or less than the cross-sectional area of ​​the second air path, so that the air outlet area of ​​the first air outlet structure communicating with the air duct cavity is not less than the air outlet area of ​​the second air outlet structure communicating with the air duct cavity. By controlling the ratio of the cross-sectional areas between the first air path and the second air path, the air outlet area of ​​different air outlet structures communicating with the air duct cavity can be adjusted. Increasing the air outlet area of ​​the first air outlet structure communicating with the air duct cavity increases the cooling range that the first air outlet structure can cover and improves the cooling effect around the first air outlet structure.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment, and in particular to an air duct assembly and a freezer having the same. Background Technology

[0002] Currently, based on their refrigeration principles, freezers are generally divided into direct-cooling freezers and air-cooling freezers. Direct-cooling freezers are prone to frost buildup during use, while air-cooling freezers are favored by users because they have the advantage of being frost-free.

[0003] In related technologies, to improve the air-cooling effect of freezers, multiple air vent structures are installed on the air duct assembly to exchange cold air with various parts of the storage compartment. Typically, the air vent structure closer to the evaporator fan (e.g., the first air vent structure) has a smaller air vent area than the air vent structure farther from the evaporator fan (e.g., the second air vent structure), thereby reducing the negative pressure difference between the various air vent structures. However, because the air vent area of ​​the first air vent structure is relatively small, the cooling range it can cover is also relatively small, resulting in poor cooling performance around the first air vent structure. Summary of the Invention

[0004] The purpose of this utility model is to provide an air duct component that improves the cooling effect around the first air outlet structure and a freezer having the same component.

[0005] To achieve one of the above-mentioned objectives of the utility model, one embodiment of the present utility model provides a duct assembly, comprising:

[0006] The housing has an air duct cavity and a connection interface communicating with the air duct cavity;

[0007] A partition structure that divides the air duct cavity into at least a first air path and a second air path;

[0008] The housing has a first air vent structure and a second air vent structure connected to the air duct cavity. The second air vent structure is located on the side of the first air vent structure away from the opposite interface. The cross-sectional area of ​​the first air duct is greater than or less than the cross-sectional area of ​​the second air duct, so that the air vent area of ​​the first air vent structure connected to the air duct cavity is not less than the air vent area of ​​the second air vent structure connected to the air duct cavity.

[0009] As a further improvement of one embodiment of the present invention, the partition structure divides the air duct cavity into a first air path, a second air path and a third air path. The cross-sectional area of ​​the second air path is larger than the cross-sectional areas of the first air path and the third air path, so that the air outlet area of ​​the first air outlet structure connected to the air duct cavity is equal to the air outlet area of ​​the second air outlet structure connected to the air duct cavity.

[0010] As a further improvement of one embodiment of the present invention, the cross-sectional area of ​​the first air passage is equal to the cross-sectional area of ​​the third air passage.

[0011] As a further improvement of one embodiment of the present invention, the air outlet structures of the first air outlet structure and the second air outlet structure that are connected to the same air duct have equal air outlet areas.

[0012] As a further improvement of one embodiment of the present invention, the housing has a third air vent structure and a fourth air vent structure, both of which are connected to the air duct with the largest cross-sectional area.

[0013] As a further improvement of one embodiment of the present invention, the fourth air outlet structure is located on the side of the third air outlet structure away from the opposite interface, and the air outlet area of ​​the third air outlet structure connected to the second air path is smaller than the air outlet area of ​​the fourth air outlet structure connected to the second air path.

[0014] As a further improvement of one embodiment of the present invention, the aforementioned air vent structures all have openings connected to the corresponding air ducts, and all openings have equal areas. The area of ​​the air vent structure connected to the corresponding air duct is configured as the number of openings of the air vent structure connected to the corresponding air duct.

[0015] As a further improvement of one embodiment of the present invention, the aforementioned air vent structures all have openings. The third air vent structure, the first air vent structure, the second air vent structure, and the fourth air vent structure are arranged sequentially along the first direction, and the openings within the same air vent structure are arranged along the second direction. The first direction and the second direction are set at a certain angle.

[0016] As a further improvement of one embodiment of the present invention, the distance of the second air path along the second direction is greater than the distance of the first air path and the third air path along the second direction, and the first air path and the third air path are located on both sides of the second air path along the second direction.

[0017] As a further improvement of one embodiment of this utility model, the air duct assembly is configured to guide the airflow within the air duct cavity out of the interface; or,

[0018] The air duct assembly is configured to guide airflow from the interface into the air duct cavity.

[0019] As a further improvement of one embodiment of the present invention, the partition structure includes a partition portion that encloses to form a second air passage and a guide portion that connects the second air passage with the fourth air outlet structure. The inner diameter of the guide portion gradually increases from the side closer to the interface to the side away from the interface.

[0020] As a further improvement of one embodiment of the present invention, the housing includes a cover plate forming the aforementioned air vent structure and a flow guide grille connected to the upper side of the cover plate. The flow guide grille is connected to the air duct cavity and includes multiple grille blades, with adjacent grille blades staggered relative to each other in the vertical direction.

[0021] As a further improvement of one embodiment of the present invention, the housing includes a cover plate and a flow guiding structure, the flow guiding structure protruding from the side of the cover plate facing the air duct cavity, and the flow guiding structure communicating with the bottom of the air duct cavity.

[0022] As a further improvement of one embodiment of the present invention, the housing includes a flow guide grille, and the air duct assembly includes a plurality of anti-blocking ribs connected to the housing, the plurality of anti-blocking ribs protruding from the aforementioned air outlet structure and / or the flow guide grille on the side away from the air duct cavity.

[0023] To achieve one of the objectives of the above-mentioned utility model, the present utility model also provides a freezer, comprising:

[0024] The cabinet includes an inner liner forming a receiving compartment, an outer shell, and an insulation cavity formed between the inner liner and the outer shell;

[0025] The door, which is connected to the top of the cabinet; and,

[0026] The air duct assembly as described above;

[0027] The cabinet includes an evaporation chamber, the interface is connected to the evaporation chamber, and at least a portion of the air duct cavity is formed by bending or vacuum forming an inner liner.

[0028] Compared with the prior art, in the embodiments of this utility model, the air duct cavity is divided into a first air path and a second air path by a partition structure, and the cross-sectional area ratio between the first air path and the second air path is controlled to adjust the air outlet area of ​​different air outlet structures connected to the air duct cavity, thereby increasing the air outlet area of ​​the first air outlet structure connected to the air duct cavity, thereby increasing the cooling range that the first air outlet structure can cover and improving the cooling effect around the first air outlet structure. Attached Figure Description

[0029] Figure 1 This is a three-dimensional schematic diagram of the freezer in some embodiments of this utility model;

[0030] Figure 2 This is a three-dimensional schematic diagram of the cross-section of the freezer along the front-back direction in some embodiments of this utility model;

[0031] Figure 3 This is a three-dimensional schematic diagram of the cross-section of the freezer along the vertical direction in some embodiments of this utility model;

[0032] Figure 4This is a three-dimensional schematic diagram of the air duct assembly from one perspective in some embodiments of the present invention, wherein the bottom plate is hidden;

[0033] Figure 5 This is a three-dimensional schematic diagram of the air duct assembly in some embodiments of the present invention from another perspective, wherein the bottom plate is hidden;

[0034] Figure 6 This is a plan view of the air duct assembly from one perspective in some embodiments of the present invention, wherein the bottom plate is hidden;

[0035] Figure 7 This is a plan view of the cross-section of the air duct assembly in some embodiments of this utility model, wherein the bottom plate is hidden;

[0036] Figure 8 This is an exploded view of the inner liner in some embodiments of this utility model. Detailed Implementation

[0037] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0038] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0039] It should be understood that terms such as "upper," "lower," "outer," and "inner," used herein to indicate spatial relative position, are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms "spatial relative position" may be intended to include different orientations of the equipment in use or operation other than those shown in the figures.

[0040] The device may be oriented in other ways (rotated 90 degrees or otherwise), and the spatial descriptions used herein shall be interpreted accordingly. For ease of description, in the present invention, when the freezer is in normal use, the direction facing the ground is downward, and the direction away from the ground is upward; the direction parallel to the ground is horizontal, and the direction perpendicular to the ground is vertical or up-down; the side closer to the user is the front side, and the side farther from the user is the rear side.

[0041] In the various illustrations of this utility model, for ease of illustration, some dimensions of the structure or part may be exaggerated relative to other structures or parts. Therefore, they are only used to illustrate the basic structure of the subject matter of this utility model.

[0042] refer to Figures 1 to 8As shown, an embodiment of this utility model provides a freezer, which is configured as a horizontal air-cooled freezer.

[0043] like Figure 1 As shown, a freezer is characterized by comprising a cabinet body 1 and a door body, wherein the door body is connected to the top of the cabinet body 1.

[0044] In some embodiments, the door is pivotally connected to the top of the cabinet 1 to open or close the receiving compartment 111. The pivot hinge connecting the cabinet 1 and the door may be located on the rear side of the top of the cabinet 1.

[0045] In some embodiments, the freezer also includes a refrigeration system, which includes a compressor, a condenser, a capillary tube, an evaporator, etc. These components are connected by pipes to form a refrigeration circuit, and the cooling capacity generated by the evaporator can provide cooling for the accommodating compartment 111.

[0046] Reference Figure 2 As shown, the cabinet 1 includes an inner liner 11 forming a receiving compartment 111, an outer shell 12, and an insulation cavity 13 formed between the inner liner 11 and the outer shell 12.

[0047] In some embodiments, the accommodating chamber 111 is formed by an inner liner 11, which may be integrally molded, for example, by injection molding.

[0048] In other embodiments, the inner liner 11 may also be formed in parts, such as by splicing together components of the same or different materials.

[0049] In some embodiments, the containment chamber 111 is insulated by filling the insulation cavity 13 with foam material, thereby reducing heat exchange with the external environment.

[0050] The cabinet 1 includes an evaporation chamber 14.

[0051] In some embodiments, an evaporator and / or an evaporation fan are provided in the evaporation chamber 14. The cold energy generated by the evaporator is radiated into the evaporation chamber 14 and can be transported to the receiving chamber 111 by the evaporation fan.

[0052] In some embodiments, the freezer also includes an air duct assembly 3, through which the airflow generated by the evaporator fan flows to the receiving compartment 111 or back to the evaporation chamber 14.

[0053] The air duct assembly 3 includes a housing 31 and a partition structure.

[0054] In some embodiments, the air duct assembly 3 is mounted on the freezer using a housing 31, which is connected to the cabinet body 1 (e.g., the inner liner 11).

[0055] In some embodiments, the partition structure is interconnected with the housing 31, and the connection method can be detachable, such as a separate configuration, or non-detachable, such as a one-piece molding.

[0056] The housing 31 has an air duct cavity 311.

[0057] In some embodiments, under the action of the evaporator fan, gas flow can be formed between the air duct cavity 311 and the receiving chamber 111.

[0058] Reference Figure 3 As shown, the housing 31 has a connection interface 312 that communicates with the air duct cavity 311.

[0059] In some embodiments, the interface 312 can serve as the inlet or outlet of the air duct cavity 311.

[0060] The interface 312 is connected to the evaporation chamber 14.

[0061] In some embodiments, the interface 312 may be connected to the air inlet or air outlet of the evaporation chamber 14.

[0062] When the interface 312 is used as the outlet of the air duct cavity 311, the interface 312 is connected to the air inlet of the evaporation cavity 14. When the interface 312 is used as the inlet of the air duct cavity 311, the interface 312 is connected to the air outlet of the evaporation cavity 14.

[0063] Reference Figure 4 As shown, the partition structure divides the air duct cavity 311 into at least a first air path 3111 and a second air path 3112.

[0064] In some embodiments, after the partition structure divides the air duct cavity 311, it forms multiple air paths (e.g., the first air path 3111 and the second air path 3112). The multiple air paths are independent of each other and are connected to the inlet or outlet of the air duct cavity 311 through the interface 312.

[0065] The housing 31 has a first air vent structure 313 and a second air vent structure 314 connected to the air duct cavity 311.

[0066] In some embodiments, the air vent structure (e.g., the first air vent structure 313 and the second air vent structure 314) is used to connect the ventilation duct cavity 311 and the receiving space 111.

[0067] The second air vent structure 314 is located on the side of the first air vent structure 313 that is away from the opposite interface 312.

[0068] In some embodiments, such as Figure 3The first air vent structure 313 is closer to the interface 312 than the second air vent structure 314, and thus closer to the evaporation chamber 14.

[0069] In some embodiments, when the evaporator fan is located within the evaporation chamber 14, the first air vent structure 313 is closer to the evaporator fan than the second air vent structure 314. Under the same conditions, the first air vent structure 313 has a greater negative pressure and a higher air velocity than the second air vent structure 314.

[0070] The cross-sectional area of ​​the first air passage 3111 is greater than or less than the cross-sectional area of ​​the second air passage 3112.

[0071] In some embodiments, the cross-sectional area of ​​the first air passage 3111 and the cross-sectional area of ​​the second air passage 3112 can be set in a certain ratio, as long as the cross-sectional area of ​​the first air passage 3111 is not equal to the cross-sectional area of ​​the second air passage 3112, that is, the ratio of their cross-sectional areas is not equal to 1.

[0072] So that the air outlet area of ​​the first air outlet structure 313 connected to the air duct cavity 311 is not less than the air outlet area of ​​the second air outlet structure 314 connected to the air duct cavity 311.

[0073] In some embodiments, by adjusting the ratio of the cross-sectional areas between air passages (e.g., between the first air passage 3111 and the second air passage 3112), the air outlet area of ​​the first air outlet structure 313 connected to the air duct cavity 311 can be greater than or equal to the air outlet area of ​​the second air outlet structure 314 connected to the air duct cavity 311.

[0074] The air vent structure (e.g., the first air vent structure 313, the second air vent structure 314) is connected to the air vent area of ​​the air duct cavity 311. This area can be the amount of gas communication between the air duct cavity 311 and the accommodating space 111 when the air vent structure connects the air duct cavity 311 and the accommodating space 111.

[0075] In some embodiments, when adjusting the area of ​​the air vents connected to the air duct cavity 311 for different air vent structures, it can be ensured that the negative pressure at each air vent structure is the same.

[0076] The air duct cavity 311 is divided into a first air path 3111 and a second air path 3112 by a partition structure. By controlling the cross-sectional area ratio between the first air path 3111 and the second air path 3112, the air outlet area of ​​different air outlet structures connected to the air duct cavity 311 can be adjusted. This increases the air outlet area of ​​the first air outlet structure 313 connected to the air duct cavity 311, thereby increasing the cooling range that the first air outlet structure 313 can cover and improving the cooling effect around the first air outlet structure 313.

[0077] The partition structure divides the air duct cavity 311 into a first air path 3111, a second air path 3112, and a third air path 3113.

[0078] In some embodiments, compared to the solution of "adjusting the cross-sectional area ratio between two air paths", adjusting the cross-sectional area ratio between three air paths can achieve more preset goals (such as achieving the size relationship or ratio relationship between the air outlet areas of different air outlet structures connected to the air duct cavity 311), and it is also easier to achieve the preset goals.

[0079] The cross-sectional area of ​​the second air passage 3112 is larger than that of the first air passage 3111 and the third air passage 3113.

[0080] In some embodiments, in order to achieve a preset goal (e.g., the air outlet area of ​​the first air outlet structure 313 connected to the air duct cavity 311 is equal to the air outlet area of ​​the second air outlet structure 314 connected to the air duct cavity 311), when adjusting the cross-sectional area ratio between the three air paths, it is only necessary to ensure that the cross-sectional area of ​​at least one air path is greater than the cross-sectional area of ​​the other two air paths, thereby simplifying the design.

[0081] For example, the cross-sectional area of ​​the second air passage 3112 is the largest, and the cross-sectional area of ​​the first air passage 3111 is equal to or different from the cross-sectional area of ​​the third air passage 3113.

[0082] So that the area of ​​the first air vent structure 313 connected to the air duct cavity 311 is equal to the area of ​​the second air vent structure 314 connected to the air duct cavity 311.

[0083] In some embodiments, when the air outlet areas of the two air outlet structures (313, 314) connected to the air duct cavity 311 are equal, it can be ensured that the cooling range or cooling effect at the two air outlet structures (313, 314) is the same, so that the cooling capacity is uniformly distributed throughout the accommodating room 111.

[0084] The cross-sectional area of ​​the first air passage 3111 is equal to the cross-sectional area of ​​the third air passage 3113.

[0085] In some embodiments, compared to the scheme where "the cross-sectional area of ​​the first air passage 3111 is not equal to the cross-sectional area of ​​the third air passage 3113", the cross-sectional areas of the first air passage 3111 and the third air passage 3113 are equal, which is beneficial to the manufacturing of the air duct assembly 3.

[0086] Moreover, when adjusting the cross-sectional area ratio between the three air passages, only the cross-sectional area of ​​two of the air passages needs to be adjusted, that is, the cross-sectional area ratio between the second air passage 3112 and the first air passage 3111 (or the third air passage 3113) is adjusted, thereby simplifying the design of the air duct assembly 3.

[0087] For example, the cross-sectional area ratio of the first air passage 3111, the second air passage 3112, and the third air passage 3113 is 25%:50%:25%. Assuming the airflow through the air duct cavity 311 per unit time is 1000L / min, then the airflow through the first air passage 3111, the second air passage 3112, and the third air passage 3113 per unit time are 250L / min, 500L / min, and 250L / min, respectively.

[0088] The first air vent structure 313 and the second air vent structure 314 are connected to the same air vent area and have the same area.

[0089] In some embodiments, the cross-sectional areas of the two air outlet structures (313, 314) connected to either air duct are equal, and the cross-sectional areas connected to the same air duct are also equal. In this case, the two air outlet structures (313, 314) adopt the same structure and are set in the same position, which facilitates the manufacturing of the air duct assembly 3.

[0090] Furthermore, it ensures that the cooling effect at the two air outlet structures (313, 314) is consistent, achieving uniform cooling inside the accommodating room 111.

[0091] The housing 31 has a third air vent structure 315 and a fourth air vent structure 316.

[0092] In some embodiments, the air duct assembly 3 has a four-outlet structure, which can improve the uniformity of cooling inside the housing chamber 111.

[0093] The third air vent structure 315 and the fourth air vent structure 316 are both connected to the air duct with the largest cross-sectional area.

[0094] In some embodiments, the airflow is greatest in the airway with the largest cross-sectional area (e.g., the second airway 3112). By connecting the third air outlet structure 315 and the fourth air outlet structure 316 to the airway with the largest cross-sectional area, the required airflow of the largest airway is ensured.

[0095] Furthermore, when adjusting the area of ​​the air vents connected to the air duct cavity 311 by different air vent structures (such as the first air vent structure 313 and the second air vent structure 314), it is easier to achieve the preset target and meet the negative pressure requirements of each air vent structure by adding the third air vent structure 315 and the fourth air vent structure 316.

[0096] For example, both the third air vent structure 315 and the fourth air vent structure 316 are connected to the second air passage 3112.

[0097] For example, when the air vent areas of the first air vent structure 313 and the second air vent structure 314 connected to the second air passage 3112 are equal, the third air vent structure 315 and the fourth air vent structure 316 are both connected to the second air passage 3112, which ensures the air volume required by the second air passage 3112 while also ensuring the negative pressure requirements at each point of the air duct assembly 3.

[0098] The fourth air vent structure 316 is located on the side of the third air vent structure 315 that is away from the opposite interface 312.

[0099] In some embodiments, such as Figure 3 The third air vent structure 315 is closer to the interface 312 than the fourth air vent structure 316, and thus closer to the evaporation chamber 14.

[0100] The area of ​​the third air vent structure 315 connected to the second air passage 3112 is smaller than the area of ​​the fourth air vent structure 316 connected to the second air passage 3112.

[0101] In some embodiments, since the vent areas of the first vent structure 313 and the second vent structure 314 connected to the second air passage 3112 are equal, and the vent area of ​​the third vent structure 315 connected to the second air passage 3112 is smaller than the vent area of ​​the fourth vent structure 316 connected to the second air passage 3112, a gradual change (e.g., increasing or decreasing) along the gas flow direction can be formed in the second air passage 3112, reducing the negative pressure difference at various points in the second air passage 3112.

[0102] Reference Figure 5 As shown, the aforementioned air vent structures all have openings (3131, 3141, 3151, 3161) that connect to the corresponding air ducts.

[0103] In some embodiments, the four air vent structures (313, 314, 315, 316) are provided with openings (3131, 3141, 3151, 3161) respectively, and the air vents connect the accommodating space 111 and the air duct cavity 311.

[0104] All openings (3131, 3141, 3151, 3161) have the same area.

[0105] In some embodiments, each opening (3131, 3141, 3151, 3161) has an equal area and adopts the same structure, thereby facilitating the design and manufacture of the air duct assembly 3.

[0106] In some other embodiments, the vent area and / or structure of each opening (3131, 3141, 3151, 3161) are different.

[0107] The area of ​​the air vent structure connected to the corresponding air passage is configured as the number of openings in the air vent structure connected to the corresponding air passage.

[0108] In some embodiments, the size of the air vent area is converted into the number of openings of the same area. For example, if it is necessary to control that the air vent areas of two air vent structures connected to the corresponding air ducts are the same, it is only necessary to control that the number of openings of the two air vent structures connected to the corresponding air ducts are equal.

[0109] For example, the number of openings in the first air vent structure 313 and the second air vent structure 314 connected to any air passage is equal.

[0110] For example, the number of openings of the third air vent structure 315 connected to the second air passage 3112 is less than the number of openings of the fourth air vent structure 316 connected to the second air passage 3112.

[0111] The third air vent structure 315, the first air vent structure 313, the second air vent structure 314, and the fourth air vent structure 316 are arranged sequentially along the first direction.

[0112] In some embodiments, the four air vent structures (315, 313, 314, 316) are arranged along the gas flow direction in the air duct cavity 311, that is, the first direction is parallel to the gas flow direction in the air duct cavity 311.

[0113] In some other embodiments, the four air vent structures can also be arranged in other ways, as long as the fourth air vent structure 316 is located on the side of the third air vent structure 315 away from the interface 312.

[0114] The openings within the same air vent structure are arranged along the second direction.

[0115] In some embodiments, the openings within the same air outlet structure are evenly arranged along the second direction, which can ensure that the air outlet structure has openings evenly distributed along the second direction and ensure that the air outlet structure exchanges heat evenly along the second direction.

[0116] The first direction and the second direction are set at a certain angle.

[0117] In some embodiments, the first direction and the second direction are perpendicular to each other.

[0118] For example, the first direction is along the length of the cabinet 1, such as the left-right direction of the freezer. The second direction is along the up-down direction.

[0119] The distance of the second air path 3112 along the second direction is greater than the distance of the first air path 3111 and the third air path 3113 along the second direction.

[0120] In some embodiments, when adjusting the cross-sectional area between different air paths, it can be achieved simply by changing the distance of the air path along the second direction (e.g., the distance in the vertical direction), while keeping the parameters of other directions of the air path (e.g., the distance in the front-back direction) unchanged, which simplifies the method of adjusting the cross-sectional area of ​​the air path.

[0121] Furthermore, by adjusting the distance of the air path along the second direction, more openings can be provided along the second direction in the air path (e.g., the second air path 3112) to meet the required number of openings for air paths with different cross-sectional areas.

[0122] The first air path 3111 and the third air path 3113 are located on both sides of the second air path 3112 along the second direction.

[0123] In some embodiments, the three air paths (3111, 3112, 3113) are arranged along the second direction, which can increase the distance of the air duct assembly 3 along the second direction, thereby increasing the cooling range of the air duct assembly 3 along the second direction.

[0124] In some embodiments, compared to the scheme of "setting two air passages with smaller cross-sectional areas (3111, 3113) on the same side of the second air passage 3112", setting the second air passage 3112 with a larger cross-sectional area between the other two air passages (3111, 3113) ensures that the two air passages (3111, 3113) are affected equally by the second air passage 3112 with a larger cross-sectional area, and that the negative pressure between the two air passages (3111, 3113) with smaller cross-sectional areas is the same.

[0125] The air duct assembly 3 is configured to guide the airflow in the air duct cavity 311 out of the interface 312.

[0126] In some embodiments, when the air duct assembly 3 is configured as a return air duct, the interface 312 serves as the outlet of the air duct cavity 311 and is connected to the air inlet of the evaporation cavity 14, thereby guiding the airflow in the air duct cavity 311 out of the interface 312.

[0127] The air duct assembly 3 is configured to guide airflow from the interface 312 into the air duct cavity 311.

[0128] In some embodiments, when the air duct assembly 3 is configured as an air supply duct, the interface 312 serves as the inlet of the air duct cavity 311 and is connected to the outlet of the evaporation cavity 14, thereby guiding the airflow from the interface 312 into the air duct cavity 311.

[0129] Reference Figure 6 As shown, the partition structure includes a partition portion 321 that encloses and forms a second air passage 3112.

[0130] In some embodiments, the second air passage 3112 is located within the partition 321, and the first air passage 3111 and the third air passage 3113 are located on opposite sides of the partition 321 along the second direction.

[0131] For example, the cross-sectional area of ​​the second air passage 3112 can be the cross-sectional area of ​​the partition 321.

[0132] The partition structure includes a guide section 322 that connects the second air passage 3112 and the fourth air outlet structure 316.

[0133] In some embodiments, the second air vent structure 314 and the fourth air vent structure 316 are located on opposite sides of the guide portion 322 along the first direction.

[0134] For example, the partition 321 is integrally formed with the guide 322 (e.g., injection molding) and integrally formed with the housing 31 (e.g., cover plate), which can reduce manufacturing costs.

[0135] The inner diameter of the guide portion 322 gradually increases from the side closer to the interface 312 toward the side away from the interface 312.

[0136] In some embodiments, the inner diameter of the guide portion 322 is tapered along the first direction, which can reduce the airflow resistance when the second air passage 3112 and the fourth air outlet structure 316 are interconnected.

[0137] In some embodiments, the guide portion 322 has a symmetrical structure, and the axis of symmetry of the guide portion 322 is parallel to the first direction, which facilitates manufacturing and further reduces the airflow resistance when the second air passage 3112 and the fourth air outlet structure 316 are interconnected.

[0138] In some embodiments, the partition structure includes a first partition 323 and a second partition 324. The first partition 323 and the second partition 324 have the same structure and are symmetrically arranged. The axis of symmetry between the first partition 323 and the second partition 324 is parallel to a first direction.

[0139] The housing 31 includes a cover plate 317 forming the aforementioned air vent structure.

[0140] In some embodiments, openings (313, 314, 315, 316) are provided on the cover plate 317 to form corresponding air vent structures (313, 314, 315, 316).

[0141] For example, the cover plate 317 has a flat plate structure.

[0142] Reference Figure 7 As shown, the housing 31 includes a flow guide grille 318 connected to the upper side of the cover plate 317.

[0143] In some embodiments, after the airflow grille 318 is connected to the upper end of the cover plate 317, it protrudes from the plane of the cover plate 317, for example, protruding towards the side of the air duct cavity 311. Thus, after the air duct assembly 3 is installed in the freezer, the cover plate 317 protrudes from the inner wall of the receiving compartment 111, forming an externally visible air duct.

[0144] The airflow guide grille 318 is connected to the air duct cavity 311.

[0145] In some embodiments, after the airflow guide grille 318 is connected to the air duct cavity 311, it is directly connected to the evaporation cavity 14 by the airflow guide ribs in the air duct cavity 311, thus being independent of other air ducts (3111, 3112, 3113).

[0146] For example, the flow guide grille 318 can be connected to the evaporation chamber 14 via the interface 312, or it can be directly connected to the evaporation chamber 14 without the interface 312.

[0147] It also includes multiple grid blades 3181.

[0148] In some embodiments, a plurality of grille blades 3181 are spaced apart, such that the guide grille 318 can connect the ventilation cavity 311 and the receiving chamber 111.

[0149] Adjacent grid blades 3181 are staggered with each other in the vertical direction.

[0150] In some embodiments, such as Figure 7 The adjacent grid blades 3181 are staggered with each other in the vertical direction. A part of the upper grid blade 3181 is directly above the lower grid blade 3181, and another part of the upper grid blade 3181 is above and behind the lower grid blade 3181, forming a structure similar to an eave.

[0151] This prevents falling foreign objects from entering the air duct cavity 311 through the guide grille 318, thus providing an anti-blocking feature at the top of the externally visible air duct to avoid clogging of the guide grille 318 and the air duct cavity 311.

[0152] For example, the grille blades 3181 located at the top of the flow guide grille 318 can be arranged in a horizontal direction. Other grille blades 3181 can be arranged at an angle relative to the horizontal direction, for example, the horizontal height of the grille blades 3181 gradually increases from the end near the cover plate 317 toward the end away from the cover plate 317.

[0153] Among the multiple grid blades 3181 that are inclined relative to the horizontal direction, the inclination angle of each grid blade 3181 may be the same or different.

[0154] Thus, the falling foreign object rolls down sequentially after passing through multiple inclined grid blades 3181, and finally rolls down to the side of the cover plate 317 away from the air duct cavity 311.

[0155] The housing 31 includes a flow guiding structure 319.

[0156] In some embodiments, the flow guiding structure 319 is connected to the lower side of the cover plate 317.

[0157] The flow guiding structure 319 protrudes from the side of the cover plate 317 facing the air duct cavity 311.

[0158] In some embodiments, after the airflow guiding structure 319 is connected to the lower end of the cover plate 317, it protrudes from the plane of the cover plate 317, for example, protruding towards the side of the air duct cavity 311. Thus, after the air duct assembly 3 is installed in the freezer, the cover plate 317 protrudes from the inner wall of the receiving compartment 111, that is, an externally exposed air duct installation method is adopted.

[0159] The flow guiding structure 319 is connected to the bottom of the air duct cavity 311.

[0160] In some embodiments, considering that the bottom of the cover plate 317 is not prone to blockage, even if the upper and side parts of the air duct cavity 311 are blocked, the air duct assembly 3 can still be ensured to work normally by using the guide structure 319 connected to the bottom of the air duct cavity 311.

[0161] For example, the flow guiding structure 319 includes a flow guiding plate 3191 connected to the lower end of the cover plate 317 and a flow guiding port 3192 disposed on the flow guiding plate 3191. The flow guiding plate 3191 protrudes from the side of the cover plate 317 facing the air duct cavity 311, and the flow guiding structure 319 is connected to the bottom of the air duct cavity 311 through the flow guiding port 3192.

[0162] The air duct assembly 3 includes multiple anti-blocking ribs 33 connected to the housing 31.

[0163] In some embodiments, the plane of the anti-blocking rib 33 is perpendicular to the plane of the cover plate 317, for example, extending in the vertical direction, which can guide falling foreign objects to the side or below the air duct assembly 3 while preventing blockage.

[0164] For example, multiple anti-blocking ribs 33 are spaced apart along the first direction, which has little impact on the airflow at the opening or the guide grille 318.

[0165] Multiple anti-blocking ribs 33 protrude from the aforementioned air outlet structure and / or air guide grille 318 on the side opposite to the air duct cavity 311.

[0166] In some embodiments, when the air duct assembly 3 adopts an externally visible air duct installation method, since the air duct assembly 3 is provided with a flow guide grille 318, it is necessary to implement anti-blocking measures for multiple air outlet structures (313, 314, 315, 316) and the flow guide grille 318, that is, multiple anti-blocking ribs 33 protrude from the aforementioned air outlet structures and flow guide grilles 318.

[0167] In some other embodiments, when the duct assembly 3 is installed in a concealed manner, that is, the cover plate 317 is flush with the inner wall of the accommodating space 111. In this case, the duct assembly 3 does not have a guide grille 318, so it is only necessary to provide anti-blocking measures for multiple air outlet structures (313, 314, 315, 316), that is, multiple anti-blocking ribs 33 only protrude from multiple air outlet structures (313, 314, 315, 316).

[0168] In some embodiments, the housing 31 includes a base plate 310 connected to the cover plate 317, and the air duct cavity 311 is formed by the base plate 310 and the cover plate 317.

[0169] In some embodiments, the base plate 310 is connected to the inner liner 11, that is, the air duct assembly 3 is fixed to the inner liner 11 as a whole by means of the base plate 310.

[0170] In some embodiments, the base plate 310 is integrally formed with the inner liner 11, that is, the base plate 310 is part of the inner liner 11. In this case, the cover plate 310 is directly fixed to (e.g., snap-fitted) the inner liner 11 to form the air duct cavity 311 and complete the installation of the air duct assembly 3.

[0171] In some embodiments, when the base plate 310 forms a portion of the air duct cavity 311 by means of a recess, the portion of the air duct cavity 311 protrudes into the insulation cavity 13.

[0172] At least a portion of the air duct cavity 311 is formed by thermoforming the inner liner 11.

[0173] In some embodiments, when the inner liner 11 is manufactured by vacuum forming, a base plate 310 is directly formed, that is, at least a portion of the air duct cavity 311 (i.e., the portion of the air duct cavity 311 formed by the base plate 310) is manufactured by vacuum forming, thereby reducing manufacturing costs.

[0174] Reference Figure 8 As shown, at least a portion of the air duct cavity 311 is formed by bending the inner liner 11.

[0175] In other embodiments, when the inner liner 11 is manufactured by bending, the base plate 310 is directly formed, that is, at least part of the air duct cavity 311 (i.e. the part of the air duct cavity 311 formed by the base plate 310) is manufactured by bending forming process, thereby improving the working strength of the inner liner 11 and the air duct assembly 3.

[0176] In some embodiments, the inner liner 11 includes a first enclosure 113 and a second enclosure 114. The first enclosure 113 and the second enclosure 114 are made of metal materials, such as sheet metal parts, so that the inner liner 11 and the air duct assembly 3 are not easily damaged, such as not easily deformed when exposed to the sun for a long time.

[0177] For example, at least a portion of the air duct cavity 311 (i.e., the portion of the air duct cavity 311 formed by the base plate 310) is formed by bending the first enclosure plate 113.

[0178] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0179] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A duct assembly (3), characterized in that, include: The housing (31) has an air duct cavity (311) and a connection interface (312) communicating with the air duct cavity (311); A partition structure that divides the air duct cavity (311) into at least a first air path (3111) and a second air path (3112); The housing (31) has a first air vent structure (313) and a second air vent structure (314) connected to the air duct cavity (311). The second air vent structure (314) is located on the side of the first air vent structure (313) away from the opposite interface (312). The cross-sectional area of ​​the first air duct (3111) is greater than or less than the cross-sectional area of ​​the second air duct (3112) so that the air vent area of ​​the first air vent structure (313) connected to the air duct cavity (311) is not less than the air vent area of ​​the second air vent structure (314) connected to the air duct cavity (311).

2. The air duct assembly (3) as described in claim 1, characterized in that, The partition structure divides the air duct cavity (311) into a first air path (3111), a second air path (3112), and a third air path (3113). The cross-sectional area of ​​the second air path (3112) is larger than the cross-sectional areas of the first air path (3111) and the third air path (3113), so that the air outlet area of ​​the first air outlet structure (313) connected to the air duct cavity (311) is equal to the air outlet area of ​​the second air outlet structure (314) connected to the air duct cavity (311).

3. The air duct assembly (3) as described in claim 2, characterized in that, The cross-sectional area of ​​the first air passage (3111) is equal to the cross-sectional area of ​​the third air passage (3113).

4. The air duct assembly (3) as described in claim 1, characterized in that, The first air vent structure (313) and the second air vent structure (314) are connected to the same air vent area and have the same area.

5. The air duct assembly (3) as described in claim 1, characterized in that, The housing (31) has a third air vent structure (315) and a fourth air vent structure (316), both of which are connected to the air duct with the largest cross-sectional area.

6. The air duct assembly (3) as described in claim 5, characterized in that, The fourth air vent structure (316) is located on the side of the third air vent structure (315) away from the opposite interface (312). The air vent area of ​​the third air vent structure (315) connected to the second air path (3112) is smaller than the air vent area of ​​the fourth air vent structure (316) connected to the second air path (3112).

7. The air duct assembly (3) as described in claim 4 or 6, characterized in that, The aforementioned air vent structures all have openings (3131, 3141, 3151, 3161) connected to the corresponding air passage. All openings (3131, 3141, 3151, 3161) have the same area. The air vent area of ​​the aforementioned air vent structure connected to the corresponding air passage is configured as the number of openings of the air vent structure connected to the corresponding air passage.

8. The air duct assembly (3) as described in claim 5, characterized in that, The aforementioned air vent structures all have openings (3131, 3141, 3151, 3161). The third air vent structure (315), the first air vent structure (313), the second air vent structure (314), and the fourth air vent structure (316) are arranged sequentially along the first direction. The openings within the same air vent structure are arranged along the second direction. The first direction and the second direction are set at a certain angle.

9. The air duct assembly (3) as described in claim 2, characterized in that, The distance of the second air path (3112) along the second direction is greater than the distance of the first air path (3111) and the third air path (3113) along the second direction. The first air path (3111) and the third air path (3113) are located on both sides of the second air path (3112) along the second direction.

10. The air duct assembly (3) as claimed in claim 1, characterized in that, The air duct assembly (3) is configured to guide the airflow within the air duct cavity (311) out of the interface (312); or, The air duct assembly (3) is configured to guide airflow from the interface (312) into the air duct cavity (311).

11. The air duct assembly (3) as claimed in claim 5, characterized in that, The partition structure includes a partition (321) that encloses and forms a second air passage (3112) and a guide (322) that connects the second air passage (3112) and the fourth air outlet structure (316). The inner diameter of the guide (322) gradually increases from the side closer to the interface (312) toward the side away from the interface (312).

12. The air duct assembly (3) as claimed in claim 1, characterized in that, The housing (31) includes a cover plate (317) forming the aforementioned air vent structure and a flow guide grille (318) connected to the upper side of the cover plate (317). The flow guide grille (318) is connected to the air duct cavity (311) and includes a plurality of grille blades (3181), with adjacent grille blades (3181) being staggered relative to each other in the vertical direction.

13. The air duct assembly (3) as claimed in claim 1, characterized in that, The housing (31) includes a cover plate (317) and a flow guiding structure (319), the flow guiding structure (319) protruding from the side of the cover plate (317) facing the air duct cavity (311), and the flow guiding structure (319) communicating with the bottom of the air duct cavity (311).

14. The air duct assembly (3) as claimed in claim 1, characterized in that, The housing (31) includes a flow guide grille (318), and the air duct assembly (3) includes a plurality of anti-blocking ribs (33) connected to the housing (31), the plurality of anti-blocking ribs (33) protruding from the aforementioned air outlet structure and / or the flow guide grille (318) on the side opposite to the air duct cavity (311).

15. A freezer, characterized in that, include: The cabinet (1) includes an inner liner (11) forming a receiving compartment (111), an outer shell (12), and an insulation cavity (13) formed between the inner liner (11) and the outer shell (12); The door, which is connected to the top of the cabinet (1); and, The air duct assembly (3) as described in any one of claims 1-14; The cabinet (1) includes an evaporation chamber (14), the interface (312) is connected to the evaporation chamber (14), and at least part of the air duct cavity (311) is formed by bending or vacuum forming the inner liner (11).

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