A horizontal air-cooled freezer

Abstract

The present invention discloses a horizontal air-cooled freezer, which comprises a cabinet body; the cabinet body further comprises an inner liner and an end return air cover plate, and the end return air cover plate includes: at least multiple rows of air return openings which are arranged along the height direction of the end return air cover plate, and each row of air return openings includes at least two air return openings; at least one first flow guiding rib which is arranged close to the first row of air return openings at the first side edge of the end return air cover plate, and the first flow guiding rib forms at least a first notch between at least two adjacent rows of air return openings; at least one second flow guiding rib which is arranged close to the second row of air return openings at the second side edge opposite to the first side edge, and the second flow guiding rib forms at least a second notch between at least two adjacent rows of air return openings; the length directions of the first flow guiding rib and the second flow guiding rib are both along the height direction of the end return air cover plate, the first notch penetrates through the thickness direction of the first flow guiding rib, and the second notch penetrates through the thickness direction of the second flow guiding rib. The present invention is used to improve the uniformity of air return and enhance the refrigeration effect of the evaporator.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and particularly relates to a horizontal air-cooled freezer. Background Art

[0002] Refrigeration equipment (such as refrigerators, freezers, etc.) is a commonly used electrical appliance in people's daily lives. Freezers are divided into horizontal freezers and vertical freezers. Horizontal freezers are widely used because of their large storage capacity. Conventional horizontal freezers usually use direct cooling for refrigeration. However, during use, frost is likely to form inside the cabinet. Horizontal air-cooled freezers, because of their advantage of being frost-free, are widely promoted. Frost-free is achieved by collecting the frost on the evaporator and heating it to discharge.

[0003] When a horizontal air-cooled freezer is working, the fan unit works to suck the relatively warm air from the storage space. This relatively warm air will flow through the evaporator (with a relatively low surface temperature) and become relatively cold air. Then this relatively cold air will be blown into the storage space, thereby providing cold for the storage space.

[0004] In addition to providing air return openings, the conventional air return cover plate only has several reinforcing ribs arranged at the front and / or back, which play a role in enhancing the strength of the air return cover plate and a small part of the flow guiding role. However, for an air return cover plate with a relatively wide air duct cross-section, the air flow in the air return duct is likely to be uneven, resulting in uneven air volume passing through the evaporator, thereby reducing the refrigeration effect of the evaporator.

[0005] The above information disclosed in this background art is only used to increase the understanding of the background art of the present application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0006] The purpose of the present invention is to provide a horizontal air-cooled freezer, which is used to solve the problem that the air return of the air return cover plate in the freezer is uneven and affects the refrigeration effect of the evaporator, improve the air return uniformity, and thus improve the refrigeration effect of the evaporator.

[0007] To achieve the above invention purpose, the present invention adopts the following technical solutions to be implemented:

[0008] A horizontal air-cooled freezer, comprising a cabinet body; characterized in that, the cabinet body further comprises an inner liner and an end return air cover plate arranged close to one side wall of the inner liner, and the end return air cover plate comprises: at least multiple rows of return air openings, which are opened along the height direction of the end return air cover plate, and each row of return air openings comprises at least two return air openings; at least one first flow guide rib, which is arranged close to the first row of return air openings at the first side edge of the end return air cover plate, and the first flow guide rib forms at least a first notch between at least two adjacent rows of return air openings, for partially diverting the air in the height direction of the end return air cover plate to the front and back directions of the horizontal air-cooled freezer; at least one second flow guide rib, which is arranged close to the second row of return air openings at the second side edge opposite to the first side edge, and the second flow guide rib forms at least a second notch between at least two adjacent rows of return air openings, for partially diverting the air in the height direction of the end return air cover plate to the front and back directions of the horizontal air-cooled freezer; the length directions of the first flow guide rib and the second flow guide rib are both along the height direction of the end return air cover plate, the first notch penetrates through the thickness direction of the first flow guide rib, and the second notch penetrates through the thickness direction of the second flow guide rib.

[0009] For the horizontal air-cooled freezer as described above, the at least multiple rows of return air openings at least include a row of top return air openings; a third notch is formed at the first flow guide rib close to the first side edge near the top return air openings, and the third notch penetrates through the thickness direction of the first flow guide rib; a fourth notch is formed at the second flow guide rib close to the second side edge near the top return air openings, and the fourth notch penetrates through the thickness direction of the second flow guide rib.

[0010] For the horizontal air-cooled freezer as described above, the at least multiple rows of return air openings further include a row of middle return air openings and a row of lower return air openings; two parallel first flow guide ribs are arranged at the first row of return air openings close to the first side edge of the end return air cover plate, and two parallel second flow guide ribs are arranged at the second row of return air openings close to the second side edge of the end return air cover plate.

[0011] For the horizontal air-cooled freezer as described above, the lengths of each of the first row of exhaust air openings are evenly divided by the two first flow guide ribs, and the lengths of each of the second row of exhaust air openings are evenly divided by the two second flow guide ribs.

[0012] For the horizontal air-cooled freezer as described above, the first notch is respectively formed at the position of each first flow guide rib between two adjacent rows of return air openings, and the second notch is respectively formed at the position of each second flow guide rib between two adjacent rows of return air openings.

[0013] For the horizontal air-cooled freezer as described above, at least one reinforcing rib is formed on the side surface of the end return air cover plate facing the space surrounded by the inner liner.

[0014] The horizontal air-cooled freezer as described above, the length direction of the reinforcing rib is along the front-back direction of the horizontal air-cooled freezer.

[0015] The horizontal air-cooled freezer as described above, the cabinet body further includes: a bottom return air cover plate, which is arranged on the bottom plate of the inner liner and one end is connected to the bottom end of the end return air cover plate, an evaporation cavity, which is arranged on the cabinet body; the end return air cover plate and the side wall form an end return air duct, the bottom return air cover plate and the bottom plate of the inner liner form a bottom return air duct, and the air flow returns to the air inlet of the evaporation cavity through the end return air duct and the bottom return air duct in sequence.

[0016] The horizontal air-cooled freezer as described above, at least one bottom guiding rib is arranged at intervals on the lower surface of the bottom return air cover plate facing the bottom plate of the inner liner, and the length direction of the bottom guiding rib is along the left-right direction of the horizontal air-cooled freezer.

[0017] The horizontal air-cooled freezer as described above, the cross-sectional shape of the bottom guiding rib is U-shaped.

[0018] Compared with the prior art, the advantages and positive effects of the present invention are: the end return air cover plate is arranged on the side wall close to the inner liner, the air volume at the air return opening at the outermost edge is small, the air volume at the air return openings between the two side edges is large, when the air volume passes through the end return air duct, the air volume in each air return groove divided by the guiding rib of the return air duct is uneven, so that the air return through the end return air cover plate is uneven, resulting in uneven air return to the evaporation cavity, affecting the refrigeration efficiency of the evaporator and the freezer.

[0019] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become clearer. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0021] Figure 1 Cross-section of an embodiment of the horizontal air-cooled freezer proposed by the present invention Figure 1 ;

[0022] Figure 2 is Figure 1 The structural diagram of the first perspective of the end return air cover plate in the embodiment of the horizontal air-cooled freezer shown in

[0023] Figure 3 is Figure 1Structural diagram of the second perspective of the end air return cover plate in the horizontal air-cooled freezer embodiment shown in [FIGURE REFERENCE];

[0024] Figure 4 is Figure 1 Structural diagram of the first perspective of the bottom air return cover plate in the horizontal air-cooled freezer embodiment shown in [FIGURE REFERENCE];

[0025] Figure 5 is Figure 1 Structural diagram of the second perspective of the bottom air return cover plate in the horizontal air-cooled freezer embodiment shown in [FIGURE REFERENCE].

[0026] Reference numerals:

[0027] 100 - Horizontal air-cooled freezer, 10 - Inner container; 11 - Bottom plate; 12 - First inner container side wall; 13 - Inclined side wall; 14 - Second inner container side wall; 20 - Internal space; 30 - End air outlet cover plate; 40 - Evaporation cavity; 50 - Evaporator; 60 - Fan group; 70 - Air duct cover plate; 71 - End air outlet cover plate; 72 - End air return cover plate; 721 / 7211 / 7212 - Top air return opening; 722 / 7221 / 7222 - Middle air return opening; 723 / 7231 / 7232 - Bottom air return opening; 724 - First guide rib; 7241 / 7242 - First notch; 7243 - Third notch; 725 - Second guide rib; 7251 / 7252 - Second notch; 7253 - Fourth notch; 726 - Reinforcing rib; 727 - Pressing groove; 73 - Bottom air outlet cover plate; 731 - Bottom guide rib. Detailed implementation manners

[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", "front", "rear", etc. are based on the directions or positional relationships shown in the accompanying drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In order to achieve uniform air return, as Figure 1 shown, the present embodiment relates to a horizontal air-cooled freezer 100. The horizontal air-cooled freezer 100 includes a cabinet body, and an evaporation cavity 40 is provided on the cabinet body, and an evaporator 50 is arranged in the evaporation cavity 40.

[0031] The cabinet body of this embodiment further includes at least a box shell (not labeled), an inner container 10, and an air duct cover assembly 70. The inner container 10 is embedded in the box shell, and foaming material is filled between the box shell and the inner container 10, which can prevent the loss of cold in the inner container 10. The inner container 10 includes a bottom plate 11 and several inner container side walls, and the inner container 10 encloses an internal space 20. A part of the bottom plate 11 is recessed into the internal space 20 to form an inclined side wall 13. One end of the inclined side wall 13 is connected to the bottom plate 11 of the inner container 10, and the other end is connected to the first inner container side wall 12. Here, the first inner container side wall 12 is one of the several inner container side walls 12 of the inner container 10, which is shown as the right side wall. The second inner container side wall 14 opposite to the first inner container side wall 12 is the left side wall.

[0032] As Figure 1 shown, the air duct cover assembly 70 is arranged in the inner container 10 and includes an end air outlet cover 71, an end air return cover 72, and a bottom air return cover 73. The end air outlet cover 71 is arranged close to the inclined side wall 13 and forms an evaporation cavity 40 with the inclined side wall 13. An evaporator 50 and a fan group 60 are arranged in the evaporation cavity 40. The space in the internal space 20 except for the evaporation cavity 40 is a storage space. Specifically, the end air return cover 72 is arranged close to the second inner container side wall 14, the bottom air return cover 73 is arranged close to the bottom plate 11 of the inner container 10. The upper end of the end air outlet cover 71 abuts against the right side of the cabinet opening, the upper end of the end air return cover 72 abuts against the left side of the cabinet opening, the lower end of the end air outlet cover 71 abuts against the right end of the bottom air return cover 73, the lower end of the end air return cover 72 abuts against the right end of the bottom air return cover 73. The end air return cover 72 and the second inner container side wall 14 form an end air return duct, and the bottom air return cover 73 and the bottom plate 11 form a bottom air return duct. As Figure 1 shown by the arrow, the air sent out from the end air outlet duct is returned through the air return openings on the end air return cover 72 and partially returns to the air inlet of the evaporation cavity 40 through the bottom air return duct. A part of the air coming out from the air return openings of the end air return duct returns to the air inlet of the evaporation cavity 40 through the air return openings at the bottom of the end air outlet cover 71. Thus, the air returning to the evaporation cavity 40 passes through the evaporator 50 for heat exchange and is sent out by the fan group 60 to the storage space to cool the items stored in the storage space.

[0033] Since the end air return cover 72 is arranged close to the second inner container side wall 14 and there are flow guiding ribs arranged along its height direction, when the air flowing along the height direction of the end air return cover 72 flows from top to bottom, the air volume at the air return openings close to the side edge of the end air return cover 72 is smaller than that in other places in the air return grooves divided by the flow guiding ribs, resulting in uneven air volume returning along each air return groove and uneven air volume reaching the evaporator 50.

[0034] To solve the above problems, for at least multi-row return air vents, at least one first flow guiding rib 724 and at least one second flow guiding rib 725 are respectively arranged for two columns of return air vents near the two side edges of the end return air cover plate 72. The numbers of the first flow guiding rib 724 and the second flow guiding rib 725 depend on the number, size and arrangement position of the return air vents. The length directions of the first flow guiding rib 724 and the second flow guiding rib 725 are both along the height direction of the end return air cover plate 72. The first flow guiding rib 724 is formed with at least one first notch on at least the part between adjacent two rows of return air vents, for partially diverting the air passing through the end return air duct from top to bottom to the front and back directions of the refrigerator, especially at the position where the end return air cover plate 72 is close to its first side edge. Similarly, the second flow guiding rib 725 is formed with at least one second notch on at least the part between adjacent two rows of return air vents, for partially diverting the air passing through the end return air duct from top to bottom to the front and back directions of the refrigerator, especially at the position where the end return air cover plate 72 is close to its second side edge. The formation positions of the first notch and the second notch are also related to the positions of the return air vents. To ensure uniform return air, generally, the return air vents on the end return air cover plate 72 are evenly distributed, the sizes of all the return air vents are the same, and the structures of the first flow guiding rib and the second flow guiding rib are exactly the same.

[0035] The length direction of each return air vent can be along the front and back direction (i.e., the longitudinal direction) of the cabinet body or along the depth direction of the cabinet body. Preferably, the length direction of each return air vent can be along the front and back direction of the cabinet body.

[0036] Specifically, as Figure 2 and Figure 3 shown, three rows of return air vents are arranged oppositely along the height direction on the end return air cover plate 72, including a row of top return air vents 721, a row of middle return air vents 722 and a row of bottom return air vents 723. Each row of return air vents includes two return air vents. The length directions of all the return air vents are along the front and back direction of the cabinet body and the sizes are equal. A row of top return air vents 721, a row of middle return air vents 722 and a row of bottom return air vents 723 ensure the temperature uniformity inside the cabinet (as Figure 1 the arrow indicates). As Figure 2 and Figure 3 shown, Figure 2The top air return openings 7211 and 7212, the middle air return openings 7221 and 7222, and the bottom air return openings 7231 and 7232 are shown. The first column of air return openings (i.e., the top air return opening 7211, the middle air return opening 7221, and the bottom air return opening 7231) near one side edge of the end air return cover plate 72 are provided with two first flow guiding ribs 724. The two first flow guiding ribs 724 divide each air return opening in the first column of air return openings into three parts. Preferably, in this embodiment, the two first flow guiding ribs 724 divide each air return opening in the first column of air return openings into three equal parts. A first notch 7241 is formed in the part of each first flow guiding rib 724 located between the top air return opening 7211 and the middle air return opening 7221, and a first notch 7242 is formed in the part of the first flow guiding rib 724 located between the middle air return opening 7221 and the bottom air return opening 7231. Similarly, the second column of air return openings (i.e., the top air return opening 7212, the middle air return opening 7222, and the bottom air return opening 7232) near the other side edge of the end air return cover plate 72 are provided with two second flow guiding ribs 725. The two second flow guiding ribs 725 divide each air return opening in the second column of air return openings into three parts. Preferably, the two second flow guiding ribs 725 divide each air return opening in the second column of air return openings into three equal parts. A second notch 7251 is formed in the part of each second flow guiding rib 725 located between the top air return opening 7212 and the middle air return opening 7222, and a second notch 7252 is formed in the part of the second flow guiding rib 725 located between the middle air return opening 7222 and the bottom air return opening 7232. In this embodiment, both the first notches 7241 and 7242 penetrate through the thickness direction of the first flow guiding rib 724, both the second notches 7251 and 7252 penetrate through the thickness direction of the second flow guiding rib 725, and the opening shapes and sizes of the first notches 7241 and 7242 and the second notches 7251 and 7252 are the same. Figure 3 The arrow direction in the figure shows that when there are the first notches 7241 and 7242 and the second notches 7251 and 7252, the air flow from top to bottom in the end air return duct (such as Figure 1 shown by the arrow in the end air return duct in the figure) is partially diverted to the air flow direction in the front - rear direction of the cabinet body through the first notches 7241 and 7242 and the second notches 7251 and 7252. In this way, the first flow guiding rib 724 and the second flow guiding rib 725 divide the end air return duct into multiple columns of air return slots. Taking the first column of air return openings as an example, the air volume in the air return slots corresponding to the middle - third part in the top air return opening 7211, the middle air return opening 7221, and the bottom air return opening 7231 can be diverted to the air return slots corresponding to the two - side parts through the first notches 7241 and 7242, ensuring the balanced pressure in the air return duct, evenly distributing the air volume in the air return duct, and facilitating uniform air return.

[0037] By setting the first air guide rib 724 and the second air guide rib 725, not only the strength of the end air return cover plate 72 is enhanced, but also the effect of uniform air volume return in the end air return duct is achieved, making the air volume passing through the evaporator 50 uniform, fully utilizing the refrigerating capacity of the evaporator 50, and avoiding local excessive frosting of the evaporator 50, which affects its cooling output.

[0038] Refer again to Figure 2 and Figure 3 , in this embodiment, the end air return cover plate 72 is integrally rectangular, and a fixing screw structure (not marked) needs to be set at the corner of its top to install the end air return cover plate 72 to the side wall 14 of the second inner tank. Therefore, in order to avoid affecting the distribution of air volume to both sides due to the influence of the fixing screw structure, in this embodiment, as Figure 3 shown, the first air guide rib 724 closest to one side edge of the end air return cover plate 72 forms a third notch 7243 at a position close to the top air return opening 7211, and the second air guide rib 725 closest to the other side edge of the end air return cover plate 72 forms a fourth notch 7253 at a position close to the top air return opening 7212. The third notch 7243 penetrates the thickness direction of the first air guide rib 724, and the fourth notch 7253 penetrates the thickness direction of the second air guide rib 725. In this way, it is beneficial to divert part of the air volume to the air return grooves on both sides at the top air return openings 7211 and 7212, reducing the problem of less air volume in the air return grooves on both sides caused by setting the fixing screw structure.

[0039] To enhance the strength of the end air return cover plate 72, as Figure 2 shown, at least one reinforcing rib is formed on the side of the end air return cover plate 72 facing the storage space. In this embodiment, three spaced upper, middle and lower reinforcing ribs are provided. Figure 2 Only one of the reinforcing ribs 726 is marked in Figure 2 , and the length direction of the reinforcing rib 726 is along the front-back direction of the cabinet, and it is perpendicular to the extending directions of the first air guide rib 724 and the second air guide rib 725, enhancing the overall strength of the end air return cover plate 72. And a plurality of pressing grooves are formed on the side of the end air return cover plate 72 facing the side wall 14 of the second inner tank.

[0040] As Figure 1 shown, the air returning from the end air outlet duct will return to the air inlet of the evaporation cavity 40 through the bottom air return duct, and then through the heat exchange of the evaporator 50 in the evaporation cavity 40, the cooled air is sent out of the middle storage space by the air outlet on the end air outlet cover plate 71 by the fan group 60 to refrigerate the items in the storage space. In this embodiment, in order to further evenly return the air volume, as Figure 4 and Figure 5As shown, at least one bottom guiding rib is provided on the side of the bottom air return cover plate 73 facing the bottom plate 11 of the inner container 10 ( Figure 5 only one of the bottom guiding ribs 731 is marked in Figure 5 ). In this embodiment, the cross-sectional shape of the bottom guiding rib is U-shaped and the length direction of the bottom guiding rib is along the air flow direction in the air duct. Five bottom guiding ribs are formed at intervals on the bottom air return cover plate 73 of this embodiment, which evenly distribute the air flow conveyed from the end air return duct, further making the air volume passing through the evaporator 50 uniform, fully utilizing the refrigerating capacity of the evaporator 50, and avoiding local excessive frosting of the evaporator 50, which affects its cold output.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, for those of ordinary skill in the art, it is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions required to be protected by the present invention.

Claims

1. A horizontal air-cooled freezer, comprising a cabinet body; Characterized in that, The cabinet body further includes an inner liner and an end return air cover plate disposed adjacent to one side wall of the inner liner. The end return air cover plate includes: At least multiple rows of return air openings, which are opened along the height direction of the end return air cover plate, and each row of return air openings includes at least two return air openings; At least one first guiding rib, which is disposed adjacent to the first row of return air openings at the first side edge of the end return air cover plate. The first guiding rib forms at least a first notch between at least two adjacent rows of return air openings, for partially diverting the air in the height direction of the end return air cover plate to the front-back direction of the horizontal air-cooled freezer; At least one second guiding rib, which is disposed adjacent to the second row of return air openings at the second side edge opposite to the first side edge. The second guiding rib forms at least a second notch between at least two adjacent rows of return air openings, for partially diverting the air in the height direction of the end return air cover plate to the front-back direction of the horizontal air-cooled freezer; The length directions of the first guiding rib and the second guiding rib are both along the height direction of the end return air cover plate. The first notch penetrates the thickness direction of the first guiding rib, and the second notch penetrates the thickness direction of the second guiding rib.

2. The horizontal air-cooled freezer according to claim 1, Characterized in that, The at least multiple rows of return air openings include at least one row of top return air openings; a third notch is formed in the first guiding rib adjacent to the first side edge at a position close to the top return air opening, and the third notch penetrates the thickness direction of the first guiding rib; a fourth notch is formed in the second guiding rib adjacent to the second side edge at a position close to the top return air opening, and the fourth notch penetrates the thickness direction of the second guiding rib.

3. The horizontal air-cooled freezer according to claim 2, Characterized in that, The at least multiple rows of return air openings further include one row of middle return air openings and one row of lower return air openings; two parallel first guiding ribs are disposed at the first row of return air openings adjacent to the first side edge of the end return air cover plate, and two parallel second guiding ribs are disposed at the second row of return air openings adjacent to the second side edge of the end return air cover plate.

4. The horizontal air-cooled freezer according to claim 3, Characterized in that, The two first guiding ribs equally divide the length of each in the first row of exhaust air openings, and the two second guiding ribs equally divide the length of each in the second row of exhaust air openings.

5. The horizontal air-cooled freezer according to claim 3 or 4, Characterized in that, The first notch is respectively formed at a position of each first guiding rib between two adjacent rows of return air openings, and the second notch is respectively formed at a position of each second guiding rib between two adjacent rows of return air openings.

6. The horizontal air-cooled freezer according to any one of claims 1 to 4, Characterized in that, At least one reinforcing rib is formed on the side surface of the end return air cover plate facing the space surrounded by the inner liner.

7. The horizontal air-cooled freezer according to claim 6, Characterized in that, The length direction of the reinforcing rib is along the front-back direction of the horizontal air-cooled freezer.

8. The horizontal air-cooled freezer according to any one of claims 1 to 4, Characterized in that, The cabinet body further includes: The bottom air return cover plate is arranged on the bottom plate of the inner container and one end thereof is connected to the bottom end of the end air return cover plate. The evaporation cavity is arranged on the cabinet body. The end air return cover plate and the side wall form an end air return duct, and the bottom air return cover plate and the bottom plate of the inner container form a bottom air return duct. The air flow returns to the air inlet of the evaporation cavity through the end air return duct and the bottom air return duct in sequence.

9. The horizontal air-cooled freezer according to claim 8, characterized in that at least one bottom guide rib is arranged at intervals on the lower surface of the bottom air return cover plate facing the bottom plate of the inner container, and the length direction of the bottom guide rib is along the left-right direction of the horizontal air-cooled freezer.

10. The horizontal air-cooled freezer according to claim 9, characterized in that the cross-sectional shape of the bottom guide rib is U-shaped.

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