Refrigerator

Abstract

The utility model relates to the technical field of refrigeration equipment, in particular to a refrigerator which comprises a first refrigerator body, a second refrigerator body, a door body and an air duct assembly, a refrigerating chamber with a first opening is limited in the first refrigerator body, and the door body is installed on the first refrigerator body to open or close the first opening. The air duct assembly comprises an air inlet and an air outlet which communicate with each other, the air duct assembly is used for conveying cold air from the air inlet to the air outlet, the refrigerating chamber is provided with a second side wall opposite to the first opening, and the distance between the air outlet and the second side wall is larger than that between the air outlet and the opening. According to the refrigerator, the air outlet is arranged close to the door body, so that cold air can be directly transmitted to the door body area, the temperature of the door body and the bottle frame is effectively reduced, and the overall cooling efficiency of the refrigerating chamber is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration equipment technical field, specifically to a refrigerator. BACKGROUND

[0002] The air outlet of the existing air-cooled refrigerator is usually designed to be concentrated on the back of the refrigeration chamber. Due to the far layout position and the limitation of the internal structure, it is difficult for the cold air to evenly cover the entire refrigeration chamber, especially the door body near the refrigeration chamber, resulting in a higher temperature of the door body of the refrigeration chamber, especially the temperature of the bottle frame area on the door is difficult to reduce, forming a large temperature difference with the internal chamber. This uneven air distribution not only affects the overall preservation effect of the refrigeration chamber, but also slows down the cooling speed of the door area, making it difficult to ensure the appropriate temperature of the food or beverage in the bottle frame. In addition, the existing air outlet structure design has the problem of cold air directly blowing food, and the cold air flow direction is not guided enough, directly impacting the food in the refrigeration chamber, which is easy to cause local frostbite of the food, especially for leafy vegetables or fruits that are easy to freeze. The frostbite caused by the direct blowing of cold air reduces the edibility and freshness of the food, which is not conducive to long-term preservation.

[0003] Therefore, the existing technology has obvious deficiencies in the air distribution in the refrigeration chamber and the structure design of the cold air outlet, which makes it difficult to effectively ensure the uniformity of the temperature in the refrigeration chamber, and also cannot effectively protect the safety of the food. SUMMARY

[0004] The purpose of the utility model is to at least solve the problem that cold air is difficult to be delivered to the refrigeration door body. The purpose is achieved by the following technical solutions:

[0005] The utility model provides a refrigerator, which comprises:

[0006] A first box body, wherein a refrigeration chamber with a first opening is defined in the first box body;

[0007] A second box body, wherein the second box body is arranged above the first box body, and a freezing chamber is defined in the second box body;

[0008] A door body, wherein the door body is installed on the first box body and used for opening or closing the first opening;

[0009] An air duct assembly, wherein the air duct assembly is attached to a first side wall of the first box body opposite to the second box body, the air duct assembly comprises an air inlet and an air outlet connected in communication, the air inlet is used for allowing cold air to flow into the air duct assembly, and the air outlet is connected in communication with the refrigeration chamber and used for allowing the cold air in the air duct assembly to flow into the refrigeration chamber;

[0010] The refrigeration chamber has a second side wall opposite to the first opening, and a distance between the air outlet and the second side wall is greater than a distance between the air outlet and the first opening.

[0011] According to the refrigerator, since the communication position is close to the opening, that is, the air outlet is close to the door body, cold air can be more easily delivered to the door body region, the cold air delivery path is shortened, the temperature of the door body and the bottle frame is more effectively reduced, and the overall refrigeration efficiency of the refrigeration chamber is improved. In addition, through the air outlet layout close to the door body side, cold air can uniformly cover the refrigeration chamber, including the bottle frame and other positions on the door body, the temperature difference between regions in the refrigeration chamber is reduced, the temperature uniformity of the refrigeration environment is improved, and the freshness of food materials is prolonged. In addition, after the refrigeration chamber door body is closed, the air duct assembly rapidly guides cold air to the door body region, so that the temperature of the door body can be restored to an ideal level in a short time, the refrigeration effect is maintained, and the shelf life of food is prolonged.

[0012] In addition, the refrigerator according to the utility model can also have the following additional technical features.

[0013] In some embodiments of the utility model, the refrigerator further includes a lamp box, the lamp box is arranged on the top of the refrigeration chamber, the air duct assembly includes a first air duct and at least two second air ducts, the first end of the second air duct is connected with one end of the first air duct, the second ends of two adjacent second air ducts are arranged at intervals, the other end of the first air duct is connected with the air inlet, each second air duct is connected with at least one air outlet, and the air outlets of at least one pair of second air ducts are arranged on opposite sides of the lamp box.

[0014] In some embodiments of the utility model, the air duct assembly includes a first flow guide rib, each second air duct is provided with a first flow guide rib arranged along the axis direction of the second air duct, and each second air duct is connected with two air outlets, and the two air outlets are mirror images arranged with the first flow guide rib as the axis of symmetry.

[0015] In some embodiments of the utility model, the air duct assembly further includes a flow guide structure, and the flow guide structure is arranged at the position of the air duct assembly located at the air outlet.

[0016] In some embodiments of the utility model, the flow guide structure includes a hub and a blade assembly, the hub is arranged in the air outlet and coaxially arranged with the air outlet, and the blade assembly is connected with the circumferential outer wall of the hub and the circumferential inner wall of the air outlet.

[0017] In some embodiments of the utility model, the flow guide structure further includes a partition ring, the vane assembly includes inner vanes and outer vanes, the partition ring is sleeved on the circumferential outer wall of the hub, a plurality of the inner vanes are connected with the circumferential inner wall of the partition ring and the circumferential outer wall of the hub respectively, and a plurality of the outer vanes are connected with the circumferential outer wall of the partition ring and the circumferential inner wall of the air outlet respectively.

[0018] In some embodiments of the utility model, a foaming layer is arranged between the first cabinet and the second cabinet, the air duct assembly is attached to one side of the first side wall facing the second cabinet, and the air duct assembly is embedded in the foaming layer.

[0019] In some embodiments of the utility model, the air duct assembly is attached to one side of the first side wall away from the second cabinet, and the air duct assembly is located in the refrigeration chamber.

[0020] In some embodiments of the utility model, the air duct assembly is arranged at the top of the first cabinet, a bottle frame is arranged on one side of the door body facing the refrigeration chamber, and a first distance is provided between the air outlet and the bottle frame in the direction from the top of the first cabinet to the bottom of the cabinet, and the first distance ranges from 80mm to 100mm.

[0021] In some embodiments of the utility model, the bottle frame has a projection in the plane where the air outlet is located, and the edge of the projection passes through the center position of the air outlet. BRIEF DESCRIPTION OF DRAWINGS

[0022] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of preferred embodiments, and are not meant to limit the present utility model. Moreover, the same reference numerals are used throughout the various drawings to designate identical elements. In the drawings:

[0023] Figure 1 A partial structure schematic view of a refrigerator according to an embodiment of the present utility model is schematically shown;

[0024] Figure 2 A partial structure schematic view of a refrigerator according to an embodiment of the present utility model is schematically shown; Figure 1

[0025] A first perspective view of a partial refrigerator according to an embodiment of the present utility model is schematically shown; Figure 3

[0026] A first perspective view of a partial refrigerator according to an embodiment of the present utility model is schematically shown; Figure 4 Figure 3 A cross-sectional view of section A-A of a refrigerator according to an embodiment of the present utility model is schematically shown;

[0027] Figure 5 ​A structural schematic view of the air duct assembly according to the embodiment of the present application is shown schematically.

[0028] Figure 6 A first perspective view of the air duct assembly according to the embodiment of the present application is shown schematically.

[0029] Figure 7 A structural schematic view of the first shell of the air duct assembly according to the embodiment of the present application is shown schematically.

[0030] Figure 8 To Figure 7 A local enlarged view at B.

[0031] Figure 9 A structural schematic view of the flow guide structure according to the embodiment of the present application is shown schematically.

[0032] Reference signs are as follows:

[0033] 100, refrigerator;

[0034] 10, first shell; 101, opening; 20, second shell;

[0035] 30, air duct assembly; 301, air inlet; 302, air outlet;

[0036] 31, first shell; 32, second shell; 321, first flow guide rib; 322, second flow guide rib; 33, flow guide structure; 331, hub; 332, separation ring; 333, inner blade; 334, outer blade; 40, door body. DETAILED DESCRIPTION

[0037] Exemplary embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings; however, these embodiments are not intended to limit the scope of the present disclosure, but rather, the present disclosure can be implemented in various forms. Rather, these embodiments are provided in order to enable those skilled in the art to thoroughly understand the present disclosure and to enable the complete disclosure of the present disclosure to be conveyed to the person skilled in the art.

[0038] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0039] Although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0040] Spatially relative terms, such as "inner", "outer", "circumferential inner wall", "circumferential outer wall", "under", "below", "lower", "above", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Such spatially relative terms can be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "under" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0041] As Figures 1 to 9As shown, according to the embodiment of the utility model, propose a kind of refrigerator 100, the refrigerator 100 includes first cabinet 10, second cabinet 20, air duct component 30 and door body 40, wherein first cabinet 10 is limited to have the refrigeration chamber with first opening 101, second cabinet 20 is located above first cabinet 10, and second cabinet 20 is limited to have the freezing chamber with second opening, door body 40 is installed on first cabinet 10 and is used to open or close first opening 101, air duct component 30 is attached to the first side wall of first cabinet 10, first side wall is close to second cabinet 20 and is oppositely arranged with second cabinet 20, air duct component 30 includes air inlet 301 and air outlet 302 that are connected, air outlet 302 is connected with refrigeration chamber, air duct component 30 is used to deliver cold air from air inlet 301 to air outlet 302.Refrigeration chamber has second side wall that is oppositely arranged with first opening 101, the distance between air outlet 302 and second side wall is greater than the distance between air outlet 302 and first opening 101.

[0042] According to the refrigerator 100 of the utility model, since air outlet 302 is close to first opening 101, i.e. air outlet 302 is close to door body 40, cold air can be more easily transmitted to the area of door body 40, shortens the cold air delivery path, so that the temperature of door body 40 and bottle frame is more effectively reduced, and the overall cooling efficiency of refrigeration chamber is improved.In addition, through the layout of air outlet 302 close to the side of door body 40, cold air can uniformly cover the refrigeration chamber, including the position of bottle frame on door body 40, etc., reduce the temperature difference of each area in refrigeration chamber, improve the temperature uniformity of refrigeration environment, help to prolong the freshness of foodstuff.Furthermore, after the refrigeration chamber door body 40 is closed, air duct component 30 rapidly guides cold air to the area of door body 40, so that the temperature of door body 40 can be restored to ideal level in a short time, maintains the refrigeration effect and prolongs the shelf life of food.

[0043] It can be understood that the structure of the refrigerator 100 includes a first cabinet 10 and a second cabinet 20, wherein the interior of the first cabinet 10 is defined as a refrigeration chamber, and the interior of the second cabinet 20 is defined as a freezer chamber. The air duct assembly 30 is installed at the top of the first cabinet 10 and at the bottom of the second cabinet 20, that is, the air duct assembly 30 is sandwiched between the two cabinets. This design not only improves the rationality of cold air distribution, but also makes the refrigeration systems of the refrigeration chamber and the freezer chamber more integrated. The air duct assembly 30 is located at the top of the first cabinet 10 and fits the bottom of the second cabinet 20, sandwiched between the refrigeration chamber and the freezer chamber. This arrangement effectively integrates the air duct structure between the two cabinets, without occupying the internal storage space of the refrigeration chamber and the freezer chamber, and improves the compactness of the overall refrigeration system. At the same time, the air duct assembly 30 is embedded in a compact form between the two cabinets, forming an independent cold air channel using the gap between the two cabinets, thereby reducing the loss of cold air during transportation. In addition, the air duct assembly 30 can be combined with a foam insulation layer to further improve the insulation effect of the cold air and ensure efficient delivery of the cold air to the refrigeration chamber with low energy consumption.

[0044] Further, the first cabinet 10 defines a refrigeration chamber with a first opening 101, and the second cabinet 20 defines a freezer chamber with a second opening. The second cabinet 20 is also provided with a door body for opening or closing the second opening.

[0045] In some embodiments, the refrigerator 100 further includes a lamp box provided at the top of the refrigeration chamber. The air duct assembly 30 includes a first air duct and two second air ducts. The first end of the second air duct is connected to one end of the first air duct, and the second ends of the two second air ducts are arranged in a spaced manner. The other end of the first air duct is connected to the air inlet 301, and each second air duct is connected to at least one air outlet 302. The air outlets 302 of the two second air ducts are respectively arranged on opposite sides of the lamp box. The first air duct is a main air duct connected to the air inlet 301 and used to deliver cold air from the cold air source to the second air duct. The design of the first air duct ensures that the cold air can be delivered to each branch air duct in an efficient and stable manner. The first end of each second air duct is connected to the first air duct, forming two branch paths to ensure that the cold air can be distributed to different air outlets 302. The second ends of the two second air ducts are arranged in a spaced manner and connected to different air outlets 302. The air outlets 302 of the two second air ducts are respectively arranged on opposite sides of the lamp box to ensure that the cold air can be distributed to different areas in the refrigeration chamber. Through the arrangement of the two branches, the cold air delivery is more uniform, effectively reducing the temperature difference in the refrigeration chamber.

[0046] Specifically, an air flow regulating valve can be provided in the second air duct. The air flow regulating valve is electrically controlled, and the user can adjust the distribution amount of cold air in different branch air ducts according to needs to achieve precise cooling of different areas.

[0047] It can be understood that the air duct assembly 30 includes one first air duct and two second air ducts, the second ends of the second air ducts are respectively arranged at the two sides of the cabinet, and the air outlets 302 are also arranged at the two sides of the cabinet close to the door body 40. By arranging the air outlets 302 on both sides of the cabinet, cold air can be uniformly distributed to different areas of the refrigeration chamber from both sides, avoiding the temperature difference phenomenon that may be caused by single-side air outlet, and significantly improving the temperature uniformity in the refrigeration chamber.

[0048] It can be understood that the air duct assembly 30 includes a first flow guide rib 322, and each second air duct is provided with a first flow guide rib 322 arranged along the axis direction of the second air duct, and each second air duct is in communication with two air outlets 302, and the two air outlets 302 are respectively arranged on the opposite sides of the first flow guide rib 322 and symmetrically arranged with the first flow guide rib 322 as the axis. By arranging a first flow guide rib 322 in each second air duct and symmetrically arranging two air outlets 302 on both sides of the first flow guide rib 322, cold air can be uniformly distributed to each air outlet 302, ensuring that the amount of cold air at the air outlet 302 is consistent, thereby realizing uniform distribution of the temperature inside the refrigeration chamber, reducing the temperature difference phenomenon, and improving the refrigeration effect. At the same time, the guiding effect of the air outlet 302 and the first flow guide rib 322 enables the cold air to form a uniform airflow coverage when diffusing from the air outlet 302, avoiding the cold air from being directly blown to the food materials in a certain direction, effectively reducing the risk of frozen food materials, especially for leafy vegetables and fruits that are sensitive to preservation.

[0049] It can be understood that the air duct assembly 30 includes a second flow guide rib 321 arranged along the axis direction of the first air duct, and the second flow guide rib 321 is arranged inside the air duct assembly 30 and located between the first ends of the two second air ducts. The second flow guide rib 321 is arranged along the axis direction of the first air duct and located between the first ends of the adjacent two second air ducts, which plays a role in dividing and guiding the flow of cold air. The size and shape of the second flow guide rib 321 are optimized so that it does not generate obvious resistance when the cold air passes through, while effectively distributing the cold air to the two second air ducts. Further, the second flow guide rib 321 uniformly distributes the cold air to the two second air ducts, so that the cold air can be uniformly delivered to the two air outlets 302 of the refrigeration chamber. Such uniform distribution of cold air helps to reduce the temperature difference phenomenon inside the refrigeration chamber, significantly improves the temperature uniformity of the refrigeration chamber, and ensures that the food materials in each area can obtain appropriate cooling effect.

[0050] In some embodiments, the air duct assembly 30 further comprises a flow guide structure 33 arranged at the position of the air duct assembly 30 located at the air outlet 302. Firstly, the flow guide structure 33 causes the cold air to form a rotating air flow when entering the refrigeration chamber, thereby expanding the coverage area of the cold air and allowing the cold air to be more evenly distributed to every corner of the refrigeration chamber, further improving the temperature uniformity of the refrigeration chamber. Moreover, the flow guide structure 33 can guide the cold air to flow around and gradually spread to the refrigeration chamber in the form of a rotating air flow, rather than directly impacting the food materials, thereby reducing the direct blowing of the cold air on the food materials and effectively reducing the risk of freezing injury, thereby protecting the freshness and quality of the food materials. Finally, the flow guide structure 33 can increase the contact area between the cold air and the air in the refrigeration chamber, thereby accelerating the overall cooling speed of the refrigeration chamber and improving the cooling efficiency of the refrigerator 100, and more quickly reducing the temperature in the refrigeration chamber to the set value.

[0051] It can be understood that the flow guide structure 33 comprises a hub 331 and a blade assembly, the hub 331 is arranged in the air outlet 302 and coaxially arranged with the air outlet 302, and the blade assembly is connected with the circumferential outer wall of the hub 331 and the circumferential inner wall of the air outlet 302, respectively. The blade assembly can cause the cold air to rotate when passing through and uniformly disperse the cold air to the refrigeration chamber.

[0052] Further, the flow guide structure 33 can comprise a hub 331, a partition ring 332, and a blade assembly comprising a plurality of inner blades 333 and a plurality of outer blades 334, wherein the hub 331 is arranged in the air outlet 302 and coaxially arranged with the air outlet 302, the partition ring 332 is sleeved on the circumferential outer wall of the hub 331, and the partition ring 332 is also coaxially arranged with the air outlet 302, the two ends of the plurality of inner blades 333 are connected with the circumferential inner wall of the partition ring 332 and the circumferential outer wall of the hub 331, respectively, and the two ends of the plurality of outer blades 334 are connected with the circumferential outer wall of the partition ring 332 and the circumferential inner wall of the air outlet 302, respectively. Firstly, the hub 331 is coaxially arranged with the partition ring 332, and the cold air generates strong rotating flow when flowing through the flow guide structure 33 through the guiding action of the plurality of inner blades 333 and outer blades 334. Such rotating air flow can form a wider coverage range in the refrigeration chamber, effectively reducing temperature differences and improving the temperature uniformity inside the refrigeration chamber. Secondly, due to the cooperation of the inner blades 333 and the outer blades 334, the cold air flow will not directly impact the food materials after passing through the flow guide structure 33, but will generate disturbance and rotating air flow through the guidance of the partition ring 332 and the blades, which can effectively avoid the freezing injury problem caused by the direct blowing of the cold air on the food materials, thereby better protecting the quality of the food materials. Finally, by arranging the inner blades 333 and the outer blades 334, the flow guide structure 33 forms two layers of air flow regions with different rotating intensities, the inner blades 333 mainly guide the air flow close to the hub 331, and the outer blades 334 act on the more peripheral air flow layer. Such multi-level flow guide structure 33 enhances the diffusion ability of the cold air, allowing the cold air to quickly spread throughout the refrigeration chamber and improving the cooling effect.

[0053] Specifically, the vane and the partition ring 332 can adopt a material with high thermal conductivity and low-temperature resistance, such as an aluminum alloy or a cold-resistant plastic, to ensure that the cold energy transfer is more efficient when the air flow passes through the vane. The surface treatment is selected to be smooth or slightly concave and convex to reduce air flow resistance and further optimize the cyclone effect.

[0054] Specifically, along the radial direction of the air outlet 302, the partition ring 332 has a first diameter, the inner vane 333 has a first length, and the inner vane 333 has a first included angle with a reference surface, wherein the reference surface is perpendicular to the axis of the hub 331, the first diameter ranges from 18 mm to 20 mm, the first length ranges from 2 mm to 3 mm, and the first included angle ranges from 55° to 65°. The first diameter of the partition ring 332 is set to range from 18 mm to 20 mm, which, in combination with the first length of the inner vane 333 ranging from 2 mm to 3 mm and the first included angle ranging from 55° to 65°, causes the air flow close to the center to form a relatively concentrated strong cyclone when passing through the inner vane 333, ensuring that the cold air obtains strong rotation at the position of the air outlet 302, thereby increasing the coverage range of the cold air and improving the temperature uniformity of the refrigeration chamber.

[0055] Further, the air outlet 302 has a second diameter, along the radial direction of the air outlet 302, the outer vane 334 has a second length, and the outer vane 334 has a second included angle with the above-mentioned reference surface, the second diameter ranges from 36 mm to 40 mm, the second length ranges from 4 mm to 5 mm, and the second included angle ranges from 35° to 45°. The second diameter of the outer vane 334 is set to range from 36 mm to 40 mm, which, in combination with the second length (4 mm to 5 mm) and the second included angle (35° to 45°), can effectively increase the radial distribution of the air flow and diffuse the cold air to a larger range. The rotating air flow generated by the outer vane 334 has a significant cooling effect on the more peripheral area of the refrigeration chamber, which helps to quickly and stably set the temperature in the refrigeration chamber to the set value, further improving the cooling efficiency. In summary, the design of the first included angle and the second included angle makes the guiding effect of the inner vane 333 and the outer vane 334 on the cold air different, forming a layered flow effect with strong inner air flow and slow outer air flow. Such a design can not only meet the cold air demand of the door body 40 area, but also avoid excessive concentration of cold air, reducing the risk of cold air directly blowing on food. At the same time, the reasonable design of the first and second length ranges can ensure that the cold air flow rate remains stable during the cyclone process and is not easily disturbed by turbulent or vortex flow, thereby improving the stability of the cyclone. At the same time, the appropriate vane length reduces air flow resistance while ensuring the cyclone effect, further optimizing the flow efficiency of the cold air.

[0056] In specific embodiments, the first diameter of the partition ring 332 is 19 mm, the first length of the inner blade 333 is 2.5 mm, and the angle between the inner blade 333 and the reference surface is 60°. The second diameter of the air outlet is 38 mm, the second length of the outer blade 334 is 4.5 mm, and the angle between the outer blade 334 and the reference surface is 40°.

[0057] It can be understood that the flow guide structure 33 is a grid piece located in the air outlet 302 and completely covers the air outlet 302. The grid piece has a certain inclination angle, which can make the cold air disperse into the door body 40 and the refrigeration chamber at different inclination angles.

[0058] Specifically, the grid piece includes a plurality of uniformly distributed grid units, which have different inclination angles according to the cold air demand of the refrigeration chamber and the door body 40. By setting the angle of the grid unit, the flow path of the cold air can be accurately controlled to uniformly disperse in the door body 40 and the refrigeration chamber according to the predetermined direction, reducing the risk of directly blowing cold air to the food.

[0059] Specifically, the inclination angle of the grid unit can be different at different positions along the grid piece. The inclination angle of the grid unit near the center of the refrigeration chamber is larger, so that the cold air mainly flows to the inner layer area of the refrigeration chamber; and the inclination angle of the grid unit near the side of the door body 40 is smaller, so that the cold air can flow to the door body 40 area at a smaller angle, so that the bottle frame on the door can be quickly cooled. The angle distribution of such zoning can optimize the coverage effect of the cold air and improve the temperature uniformity of the refrigeration chamber.

[0060] Specifically, in order to adapt to different seasons or actual needs of users, the grid unit of the grid piece can be designed as an adjustable angle structure. Users can adjust the inclination angle of the grid unit through simple operation to realize customized control of the air flow distribution of the refrigeration chamber to meet different refrigeration needs in summer high temperature or winter low temperature.

[0061] It can be understood that the flow guide structure 33 can adopt a pinhole type design for the top air outlet 302, and the slow and uniform release of cold air is realized through a plurality of small aperture air outlets 302 to form a similar "water wet" air flow effect.

[0062] Specifically, the pinhole type air outlet 302 is composed of a plurality of small holes, and the aperture of each hole is controlled between 0.5 mm and 1.5 mm to ensure that the cold air can be released slowly. The number of small holes is accurately designed according to the size of the refrigeration chamber and the cold air demand to ensure the uniform distribution of cold air in each area of the refrigeration chamber and improve the overall temperature uniformity. The pinhole type air outlet 302 can be uniformly arranged at the top of the refrigeration chamber, or concentratedly distributed in the area that needs to be cooled down (such as above the door body 40), so as to optimize the dispersion effect of the cold air. Through reasonable aperture and distribution design, the interior of the refrigeration chamber can be effectively covered, and the cold air is avoided from being directly blown to the food.

[0063] Further, due to the low air flow rate of the pinhole type air outlet 302, frost is easily generated on the air outlet surface. To avoid frosting and blocking of the air outlet 302, a hydrophobic coating can be added to the edge of the air outlet 302, or a heating function can be added to ensure smooth release of cold air and prolong the service life of the refrigerator 100.

[0064] In some embodiments, the top air outlet 302 is implemented by a duct arranged inside the refrigeration chamber, rather than being pre-embedded in the foam layer of the refrigeration chamber. For example, a separate duct structure is arranged on the top of the refrigeration chamber inside the side wall facing away from the second box 20, and the duct extends from the cold air source to the top air outlet 302 of the refrigeration chamber. The duct is arranged along the inner wall of the refrigeration chamber and is made of a material with good low-temperature resistance and heat conductivity, such as ABS plastic or high-density polyethylene, to ensure the stability of cold air delivery and reduce the overall weight of the system.

[0065] Specifically, the duct can be evenly distributed along the upper part of the refrigeration chamber to form a closed ring structure or a multi-branch decentralized structure, so that cold air can be evenly distributed to the top of the refrigeration chamber through multiple air outlets 302. The ring layout helps to ensure uniform cold air coverage in each area of the refrigeration chamber, while the multi-branch layout can direct cold air to specific areas (such as the door body 40 area or the area prone to warming) as needed, improving the refrigeration effect.

[0066] In some embodiments, the duct assembly 30 is arranged between the first box 10 and the second box 20, and a foaming layer is provided between the first box 10 and the second box 20. The duct assembly 30 is attached to the side of the first side wall facing the second box 20 and is pre-embedded in the foaming layer between the inner tank of the two boxes, so that the cold air channel is more concealed, saving space in the refrigeration chamber and maintaining neatness and aesthetics.

[0067] Specifically, a refrigeration lamp box is provided at the middle position of the refrigeration chamber, and the air outlets 302 are distributed on the left and right sides of the refrigeration lamp box. The duct assembly 30 is embedded in the foam layer between the inner tank and the outer shell of the refrigeration chamber. This design not only reduces the occupation of the duct assembly 30 on the internal space of the refrigeration chamber, but also reduces the loss of cold air during transportation by taking advantage of the heat preservation effect of the foam layer, thereby improving the utilization efficiency of cold air. The refrigeration lamp box is located in the center of the refrigeration chamber, and the air outlets 302 are located on the left and right sides of the lamp box. The central position of the lamp box makes the lighting effect in the refrigeration chamber more uniform, and the symmetrical layout of the air outlets 302 on the left and right sides ensures that cold air enters the refrigeration chamber uniformly from both sides, reducing the temperature dead angle near the lamp box and ensuring that cold air can cover all areas of the refrigeration chamber.

[0068] It can be understood that, in some embodiments, the air duct assembly 30 includes a second shell 32 connected to each other, and the first shell 31 and the second shell 32 jointly enclose a first air duct and two second air ducts. Among them, the first shell 31 is connected to the first cabinet 10, and the second shell 32 is connected to the second cabinet 20. The first shell 31 is provided with an air inlet 301, an air outlet 302, a second flow guide rib 321, and a first flow guide rib 322.

[0069] In some embodiments, the side of the door body 40 facing the refrigeration compartment is provided with a bottle frame for storing bottled beverages, canned foods and the like. The bottle frame is connected to the refrigeration compartment space, so that the cold air can cover the bottle frame area, providing a stable refrigeration environment for the items placed on the door body 40. The bottle frame is fixed on the side of the door body 40 facing the refrigeration compartment, which can adopt a multi-layer or single-layer structure to provide multiple compartments for storing different types of items. The size of the bottle frame is optimized according to the size of the door body 40 and the space of the refrigeration compartment to adapt to the size of commonly used refrigerated items such as bottled beverages and canned foods.

[0070] Further, the distance between the air outlet 302 and the bottle frame is a first distance, and the first distance is in the range of 80mm to 100mm. First, the distance between the air outlet 302 and the bottle frame is in the range of 80mm to 100mm, which can make the cold air diffuse moderately before reaching the bottle frame, forming a uniform cold air cover. Such cold air distribution ensures that the beverages and food materials in the bottle frame can obtain uniform cooling effect, avoiding uneven cooling phenomenon caused by local temperature difference. Second, the distance of 80mm to 100mm can effectively buffer the flow of cold air, making the cold air gentle when it reaches the bottle frame, avoiding the direct blowing of cold air to the items in the bottle frame. This design effectively prevents the problem of frozen or frosting of bottled beverages and food materials caused by direct blowing of cold air, protecting the quality of food materials.

[0071] Further, the bottle frame has a projection in the plane where the air outlet 302 is located, and the edge of the projection passes through the center position of the air outlet 302. The air outlet 302 is accurately arranged to face the edge of the bottle frame to achieve the diversion of cold air. The accurate alignment of the edge of the bottle frame and the air outlet 302 makes the cold air flow direction more stable and uniform. Part of the cold air flows into the bottle frame to provide direct cooling effect for bottled beverages and food materials, and the other part of the cold air diffuses downward to other areas of the refrigeration compartment, ensuring the temperature balance of each position inside the refrigeration compartment. At the same time, the cold air flows through the air outlet 302 and directly enters the bottle frame area, quickly taking away the heat of the items in the bottle frame, significantly improving the cooling speed of the items in the bottle frame. Especially suitable for refrigerating beverages and high-temperature frequent door opening and closing, the cold air quickly restores the low-temperature environment in the bottle frame, prolonging the shelf life of food materials and beverages.

[0072] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A refrigerator characterized by comprising: The refrigerator comprises: a first cabinet, a refrigeration chamber with a first opening being defined in the first cabinet; a second cabinet, a freezing chamber being defined in the second cabinet, the second cabinet being arranged above the first cabinet; a door body, the door body being arranged on the first cabinet and being used for opening or closing the first opening; an air duct assembly, the air duct assembly being arranged on a first side wall of the first cabinet opposite to the second cabinet, the air duct assembly comprising an air inlet and an air outlet, the air inlet being used for air flow into the air duct assembly, the air outlet being communicated with the refrigeration chamber and being used for air flow in the air duct assembly into the refrigeration chamber; wherein the refrigeration chamber has a second side wall opposite to the first opening, a distance between the air outlet and the second side wall is greater than a distance between the air outlet and the first opening.

2. The refrigerator according to claim 1, characterized in that, The refrigerator further comprises a lamp box, the lamp box being arranged on a top of the refrigeration chamber, the air duct assembly comprises a first air duct and at least two second air ducts, first ends of the second air ducts are communicated with one end of the first air duct, second ends of adjacent two second air ducts are arranged in a spaced manner, the other end of the first air duct is communicated with the air inlet, each second air duct is communicated with at least one air outlet, the air outlets of at least one pair of second air ducts are arranged on opposite sides of the lamp box.

3. The refrigerator according to claim 2, characterized in that, The air duct assembly comprises a first flow guide rib, each second air duct is provided with a first flow guide rib arranged along an axis direction of the second air duct, and each second air duct is communicated with two air outlets, the two air outlets are arranged in a mirror image manner with the first flow guide rib as a symmetric axis.

4. The refrigerator according to any one of claims 1 to 3, characterized in that, The air duct assembly further comprises a flow guide structure, the flow guide structure is arranged at a position of the air duct assembly located at the air outlet.

5. The refrigerator according to claim 4, characterized in that, The flow guide structure comprises a hub and a blade assembly, the hub is arranged in the air outlet and is coaxially arranged with the air outlet, the blade assembly is connected with a circumferential outer wall of the hub and a circumferential inner wall of the air outlet.

6. The refrigerator according to claim 5, characterized in that, The flow guide structure further comprises a separation ring, the blade assembly comprises an inner blade and an outer blade, the separation ring is sleeved on the circumferential outer wall of the hub, a plurality of inner blades are connected with the circumferential inner wall of the separation ring and the circumferential outer wall of the hub, and a plurality of outer blades are connected with the circumferential outer wall of the separation ring and the circumferential inner wall of the air outlet.

7. The refrigerator according to any one of claims 1 to 3, characterized in that, A foaming layer is arranged between the first cabinet and the second cabinet, the air duct assembly is arranged on a side of the first side wall facing the second cabinet, and the air duct assembly is embedded in the foaming layer.

8. The refrigerator according to any one of claims 1 to 3, characterized in that, The air duct assembly is arranged on a side of the first side wall away from the second cabinet, and the air duct assembly is located in the refrigeration chamber.

9. The refrigerator according to any one of claims 1 to 3, characterized in that, The air duct assembly is arranged on a top of the first cabinet, a bottle frame is arranged on a side of the door body facing the refrigeration chamber, a first distance between the air outlet and the bottle frame is in a range of 80mm to 100mm in a direction from the top of the first cabinet to a bottom of the cabinet.

10. The refrigerator according to claim 9, characterized in that, The bottle frame has a projection in the plane of the air outlet, the edge of the projection passing through the center position of the air outlet.

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