Refrigerator

Abstract

The utility model relates to a refrigerator which comprises a refrigerator body. The evaporator is arranged at the rear part of the refrigerator main body in the front-back direction; the evaporator is arranged on the front side of the refrigerator main body, the cover plate is arranged closer to the front side of the refrigerator main body than the evaporator, an air path for cold air circulation is formed between the cover plate and the evaporator, the cover plate is provided with an air path expansion part, and the air path formed in the air path expansion part is deeper than air paths formed in other parts.

Description

Technical Field

[0001] The utility model relates to a refrigerator. Background Art

[0002] Refrigerators, as a household appliance used in daily life, are becoming increasingly popular and have become an indispensable household necessity. With the continuous improvement of living standards and increasing demands, refrigerator styles and functions have become more diverse, and people's requirements for refrigerator performance and cooling efficiency have further increased. In recent years, consumers have particularly valued refrigerator cooling quality, stability, and reliability of cooling effects.

[0003] Existing refrigerators are usually provided with an air duct cover at the rear side of the refrigerator and an evaporator is provided close to the air duct cover, and a fan is used to blow cold air generated by the evaporator into the refrigerator through the air duct provided at the rear side of the refrigerator. Utility Model Content

[0004] Problems to be solved by the utility model

[0005] As mentioned above, existing refrigerators usually use fans to blow the cold air generated by the evaporator into the refrigerator through the air duct set at the back of the refrigerator. However, the evaporator is usually set close to or tightly against the air duct cover. Therefore, based on the use environment of the refrigerator and the use habits of consumers, sometimes frost may form on the bottom of the evaporator, for example, because the refrigerator is in a high temperature and high humidity environment, the consumer frequently opens and closes the refrigerator door for a period of time, or the consumer accidentally leaves the refrigerator door slightly open for a long time, thereby causing frost blockage of the evaporator.

[0006] In this case, frost on the bottom of the evaporator blocks the airflow, preventing the cold air generated by the evaporator from being delivered to the induction chamber. This results in blocked cold air delivery, which in turn prevents the refrigerator from maintaining cooling, reducing the refrigerator's cooling quality, stability, and reliability. Therefore, preventing airflow blockage due to frost is a key issue facing those skilled in the art.

[0007] The present invention is developed in view of the above-mentioned problems in the prior art, and its purpose is to provide a refrigerator having an air passage structure of a cover plate capable of preventing the air passage from being blocked by frost.

[0008] Technical solutions to solve problems

[0009] A first aspect of the present invention provides a refrigerator, comprising: a refrigerator body; an evaporator arranged at the rear of the refrigerator body in the front-to-back direction; and a cover plate arranged closer to the front side of the refrigerator body than the evaporator, an air path for cold air circulation being formed between the cover plate and the evaporator, wherein the cover plate is provided with an air path expansion portion, and the air path formed in the air path expansion portion is deeper than the air paths formed in other parts.

[0010] Preferably, the evaporator and the cover plate are vertically arranged along the up-down direction of the refrigerator, and the air path expansion portion is formed at a lower portion of the cover plate.

[0011] Preferably, the air passage expansion portion is a convex portion that protrudes forward in the front-rear direction of the refrigerator.

[0012] Preferably, the invention further comprises a sealing member provided at the periphery of the cover plate and located between the evaporator and the cover plate.

[0013] Preferably, the evaporator includes a plurality of evaporator fins arranged in parallel and a coil winding between the evaporator fins, and the interval between the cover plate and the evaporator fins is 3 to 5 mm.

[0014] Preferably, the air duct expansion portion and the cover plate are formed integrally by performing a stamping process, a bending process, or a molding process on the cover plate.

[0015] Preferably, a fan capable of introducing cold air into the interior of the refrigerator is further provided above the evaporator.

[0016] Preferably, the evaporator is located at the rear of the freezer compartment of the refrigerator.

[0017] Effect of utility model

[0018] According to the utility model, it is possible to prevent the air passage from being blocked due to frost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view schematically showing the air duct structure of the present invention viewed from the rear of the refrigerator in a state where the evaporator is installed.

[0020] Figure 2 This is a front view schematically showing the air duct structure of the present invention viewed from the rear of the refrigerator in a state where the evaporator is removed.

[0021] Figure 3 This is a bottom view schematically showing the air duct structure of the present invention viewed from the bottom of the refrigerator in a state where the evaporator is removed.

[0022] Figure 4The figure is a bottom view schematically showing the air duct structure of the present invention when viewed from the bottom of the refrigerator in a state where the evaporator is installed.

[0023] Figure 5 yes Figure 1 Cross-sectional view of line aa.

[0024] Explanation of symbols

[0025] 1...Cover (air duct cover / evaporator cover)

[0026] 11...air duct expansion part (cover plate step part / cover plate outer convex part / cover plate inner concave part)

[0027] 2... Evaporator

[0028] 21... evaporator fins

[0029] 22...Evaporator heat exchange tube

[0030] 3...Seals

[0031] 4...Fan

[0032] h……interval DETAILED DESCRIPTION

[0033] The present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the various specific embodiments and examples described in this invention are merely examples for complete description and do not limit the scope of protection of this invention. All other embodiments obtained by those skilled in the art based on the specific embodiments and examples of this invention without creative effort shall fall within the scope of protection of this invention.

[0034] In the following description, several specific details are set forth. However, the embodiments described herein can be implemented without certain specific details. In the specific embodiments, well-known structures and technologies are not shown in detail to avoid obscuring the understanding of the description.

[0035] It should be understood that ordinal adjectives such as "first", "second", "third", etc. may be used in this document to refer to elements. Unless otherwise specified, this is only used to distinguish different elements and does not imply that the elements mentioned must be in a given order in time, space, or other aspects.

[0036] In addition, for the sake of convenience, the following description uses terms such as "up", "down", "left", "right", "horizontal", "vertical", "front", "back", "top", "bottom", "inside", and "outside" to indicate directions. However, these terms only limit the relative positional relationship between the components in a specific posture, such as that shown in the accompanying drawings. The use of these words does not constitute a restriction on the components. If the specific posture changes, the terms indicating the directions will of course change accordingly.

[0037] In the present invention, unless otherwise specified, the terms "connect", "fix", etc. should be understood in a broad sense. If there is no special explanation, for example, "fix" can be a fixed connection or a detachable connection, or formed into an integral body; "connect" can be a mechanical connection or an electrical connection, and can be a direct connection or an indirect connection through an intermediate medium. In addition, the "up and down direction", "front and back direction", "left and right direction", "width direction", "length direction", "parallel", "vertical", and "vertical" in the present invention are not limited to geometric directions in a strict sense (vertical up and down (vertical up and down) and front and back, left and right, parallel, and vertical). For example, it also includes situations where the direction is slightly tilted at a certain angle relative to the above directions.

[0038] Furthermore, it should be understood that the terms "about" or "approximately" may be used herein to modify numerical values, which means that they are within the normal tolerance range in the art.

[0039] In addition, the contents shown in the drawings are for schematic purposes only and do not represent the actual structure of the product. For ease of explanation and understanding, the proportions of the various components may not necessarily be consistent with the actual product.

[0040] In addition, in the present invention, for ease of understanding, a three-dimensional coordinate system (XYZ coordinate system) or a plane rectangular coordinate system (XY coordinate system / YZ coordinate system / XZ coordinate system) is sometimes marked. For example, when the user is facing the refrigerator, the width direction of the refrigerator is set as the X direction, the depth direction of the refrigerator is set as the Y direction, and the height direction of the refrigerator is set as the Z direction. However, these directions and coordinate systems are only used to more clearly illustrate the present invention. The structures in the figures do not necessarily have to meet the coordinate and direction requirements of the corresponding coordinate system.

[0041] Furthermore, a refrigerator typically comprises a main body with a door, and compartments within the body such as a freezer compartment, a refrigerator compartment or storage compartment, a drying compartment, and an ice-making compartment. Furthermore, the refrigerator also comprises components such as a condenser, an evaporator, capillary tubes, a compressor, thermal insulation, heat sinks, and a fan, which are not described in detail in this utility model. This utility model only provides a detailed description of the air duct structure at the rear of the refrigerator where the evaporator is located.

[0042] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0043] like Figures 1 to 5 As shown, when a user observes the refrigerator of the present invention from the rear, they can see that a cover plate 1 is provided at the rear of the refrigerator body (the rear of the refrigerator body), and an evaporator 2 is provided further back of the cover plate 1 (the side in the depth direction Y when the user faces the refrigerator). That is, the cover plate 1 and the evaporator 2 are provided in sequence at the rear of the refrigerator along the depth direction Y, with the cover plate 1 being provided closer to the front of the refrigerator body than the evaporator 2. In the present invention, the cover plate 1 is used as an air duct cover, but it can also serve as an evaporator cover.

[0044] In a specific embodiment of this embodiment, the evaporator 2 is composed of a plurality of evaporator fins 21 and evaporator heat exchange tubes 22 arranged in a serpentine (snake) pattern (hereinafter referred to as "heat exchange tubes / coils"). More specifically, the plurality of evaporator fins 21 are arranged in parallel and at equal intervals along the width direction X of the refrigerator. Each evaporator fin 21 is provided with an insertion hole (not shown). The evaporator heat exchange tubes 22 are inserted through these insertion holes, forming a serpentine shape (e.g., a serpentine shape). The above embodiment is merely an illustration of the present invention; other evaporator configurations and their components are also possible.

[0045] In addition, in the present invention, a seal 3 is provided behind the cover 1. By providing the seal 3, the evaporator 2 and the cover 1 can be compressed and sealed to prevent air leakage, thereby forming an air path for cold air circulation together with the cover 1 and the evaporator 2, and further utilizing the fan 4 provided at the rear of the refrigerator (refer to FIG. Figure 1 ), and the cold air generated by the evaporator 2 can be introduced into each compartment of the refrigerator for refrigeration. In one example of the present invention, foam cotton or foam is used as the sealing member 3, but the present invention is not limited thereto, and other sealing members can also be used.

[0046] In addition, in the present invention, reference is made to Figures 2 to 5 The cover plate 1 is further provided with an air passage expansion portion 11 .

[0047] Reference Figures 3-5 Regarding the depth in the thickness direction Y of the refrigerator body, the air path formed at the location corresponding to the air path expansion portion 11 is deeper than the air path formed at other locations. In a specific embodiment, as Figures 1 to 5 As shown in FIG. 1 , in the height direction Z of the refrigerator, the air passage expansion portion 11 is formed below the cover plate 1. More specifically, as shown in FIG. Figure 5 As shown, in the height direction Z of the refrigerator, for the position at the rear of the refrigerator body where the evaporator 2 is formed, the air path expansion portion 11 is formed at a position corresponding to the bottom of the evaporator 2, that is, below the cover 1.

[0048] In the present invention, by providing the air path expansion part 11, based on the use environment of the refrigerator and the use habits of the consumers, even if there is a situation where frost forms on the bottom of the evaporator due to improper operation such as the refrigerator being in a high temperature and high humidity environment, the consumer frequently opening and closing the refrigerator door for a period of time, or the consumer accidentally leaving the refrigerator door slightly open for a long time, the air path expansion part can improve the gap between the air path and the evaporator, so that the cold air can pass through the gap between the two and bypass the frosted part, and can stably and continuously deliver cold air to the refrigerator compartment regardless of the frosting situation, so that the refrigerator continues to keep cooling, and the air path will not be blocked by frost, thereby greatly improving the stability and reliability of use, and further improving the cooling quality and cooling effect.

[0049] As a specific example, Figures 2 to 5 As shown, the air passage expansion portion 11 may be a convex portion protruding forward in the front-to-back depth direction of the refrigerator body.

[0050] More specifically, the air passage expansion portion 11 can be a convex portion (outer convex portion of the cover plate) formed on the cover plate 1 by stamping or molding, which is convex toward the inner side of the refrigerator (for example, when the user faces the front of the refrigerator, it faces the user side), or it can be a step portion convex toward the inner side of the refrigerator formed by bending the cover plate 1. From another perspective, when the user is at the back of the refrigerator (facing the evaporator, refer to Figure 1 and Figure 2 ), the air duct expansion portion 11 is a recessed portion (recessed portion inside the cover) that is recessed toward the inner side of the refrigerator.

[0051] In addition, regarding the gap h between the cover plate 1 and the evaporator fins 21 (the gap between the evaporator and the air path), if the gap between the two is too large, it will affect the prevention of air leakage. If the gap between the two is too small, frost will form at the bottom of the evaporator, which will hinder the circulation of cold air. Therefore, in the present invention, if Figure 4 and Figure 5 As shown, the spacing h between the cover plate 1 (especially the portion with the air path expansion portion) and the evaporator fin 21 is preferably 3mm to 5mm, more preferably 3mm to 4mm. By setting it in this way, not only can a good seal be achieved without air leakage, but also the circulation of cold air will not be hindered.

[0052] Furthermore, in a specific embodiment of the present invention, the air duct expansion portion 11 is integrally formed with the cover plate 1, but the two may also be formed as separate parts. From the perspectives of ease of manufacture, sealing, and assembly, the air duct expansion portion 11 is preferably formed integrally with the cover plate 1 by stamping, molding, or bending.

[0053] In addition, refer to Figure 1 and Figure 2 A fan 4 is provided above the evaporator 2 to introduce cold air into the interior of the refrigerator (e.g., a refrigerator compartment, a freezer compartment, etc.). Thus, the cold air generated by the evaporator 2 can be introduced into the refrigerator compartment or the freezer compartment of the refrigerator via the air duct by the fan 4 for refrigeration.

[0054] Furthermore, in the present invention, the evaporator 2 is positioned vertically along the vertical direction of the refrigerator body at the rear of the freezer compartment (not shown) of the refrigerator. The freezer compartment is typically colder than the rest of the refrigerator. Due to this large temperature difference, frost blockage is more likely to occur at the rear of the freezer compartment. In the present invention, the air duct expansion portion 11 is positioned at the location of the evaporator 2 to better mitigate frost blockage and improve cooling quality and effectiveness.

[0055] Although various embodiments of the present invention have been described above, the present invention is not limited thereto and various modifications can be made thereto as needed.

Claims

1. A refrigerator, characterized in that: include: Refrigerator body; An evaporator is provided at the rear portion of the refrigerator body in the front-to-back direction; and The cover plate is arranged closer to the front side of the refrigerator body than the evaporator. An air passage for cold air circulation is formed between the cover plate and the evaporator, wherein: The cover plate is provided with an air path expansion portion, and the air path formed in the air path expansion portion is deeper than the air paths formed in other portions.

2. The refrigerator according to claim 1, wherein: The evaporator and the cover plate are vertically arranged along the up and down direction of the refrigerator. The air passage expansion portion is formed below the cover plate.

3. The refrigerator according to claim 2, wherein: The air passage expansion portion is a convex portion protruding forward in the front-rear direction of the refrigerator.

4. The refrigerator according to claim 3, wherein: The invention also includes a sealing member provided at the periphery of the cover plate and located between the evaporator and the cover plate.

5. The refrigerator according to claim 4, wherein: The evaporator includes a plurality of evaporator fins arranged in parallel and a coil winding between the evaporator fins. The interval between the cover plate and the evaporator fins is 3 to 5 mm.

6. The refrigerator according to any one of claims 1 to 5, wherein: The air passage expansion portion and the cover plate are formed into one piece by performing stamping, bending or molding on the cover plate.

7. The refrigerator according to claim 6, wherein: A fan capable of introducing cold air into the interior of the refrigerator is further provided above the evaporator.

8. The refrigerator according to claim 7, wherein: The evaporator is located at the rear of the freezer compartment of the refrigerator.

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