Exhaust structure of refrigerator

Abstract

The utility model discloses an exhaust structure of a refrigerator. The exhaust structure comprises a refrigerator body frame assembly and a gas flow guide assembly. The box body frame assembly is composed of an inner container, a shell and a lower rib plate. The gas flow guide assembly comprises a bottom plate layer and a baffle layer which are arranged in parallel and form a closed exhaust channel through an edge bonding layer. The exhaust channel is provided with an air inlet and a tail end exhaust hole, and the height of the channel is smaller than the critical flowing thickness of foaming materials. L-shaped angle plates are arranged on two sides of the bottom of the box body, and a glue injection baffle with a glue injection port is arranged at the top end to form a glue injection cavity. A directional exhaust path is formed through the double-layer plate structure, gas is intensively exhausted through a channel during foaming, foaming materials are blocked due to the narrow channel and the curing self-locking effect, the air trapping problem caused by the fact that a traditional exhaust hole is prone to being blocked is solved, and the material leakage phenomenon is avoided. The baffle layer is provided with anti-stripping protrusions, and the structural stability is ensured. The structure does not need complex micropore processing, the production cost is effectively reduced, and the foaming quality is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of household appliances, and in particular to an exhaust structure for a refrigerator. Background Technology

[0002] In the foaming process of refrigerator cabinets, the effective expulsion of gas from the insulation layer directly affects the foaming quality. Traditional solutions use micro-pores (≤1mm) in the bottom plate for venting; however, the liquid stage of the foam material easily covers these vents, interrupting the airflow. Even with dense pore placement, air trapping in the lower stiffener area cannot be avoided, leading to localized depressions or voids. Furthermore, processing micro-pores in sheet metal lower stiffeners is costly, and overflow from the vents contaminates the cabinet's appearance. While vacuum foaming technology can improve the air trapping problem, it significantly increases equipment investment and process costs. In existing technologies, the venting channel and the foam material flow path are not physically isolated, making it impossible to coordinate gas expulsion and the foam curing process, resulting in a trade-off between efficient venting and leak prevention. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] Therefore, to solve the above-mentioned technical problems, this utility model provides the following technical solution: a refrigerator exhaust structure, including...

[0005] The cabinet frame assembly includes a refrigerator cabinet consisting of an inner liner and an outer shell, wherein the inner liner is provided with a lower stiffening plate and a middle stiffening plate, and the rear side of the outer shell is connected to a back plate.

[0006] The gas guiding assembly includes a base plate layer and a baffle layer arranged in parallel. The base plate layer is fixedly installed at the bottom of the housing, and the baffle layer forms an exhaust channel by maintaining a gap with the base plate layer through an adhesive layer.

[0007] As a preferred embodiment of the exhaust structure of the refrigerator described in this utility model, the cabinet frame assembly further includes corner plates, which are arranged on both sides of the bottom of the outer shell. The corner plates are L-shaped and cover the inner corner of the refrigerator cabinet, and are connected to the edge of the gas guiding assembly.

[0008] As a preferred embodiment of the exhaust structure of the refrigerator described in this utility model, the baffle layer is made of a smooth metal plate, and the contact surface between the baffle layer and the adhesive layer is provided with anti-peeling protrusions, which are continuous wavy structures.

[0009] In a preferred embodiment of the exhaust structure of the refrigerator described in this utility model, the adhesive layer is a double-sided adhesive tape, arranged along the edge of the bottom plate layer, forming an exhaust channel in the middle.

[0010] As a preferred embodiment of the exhaust structure of the refrigerator described in this utility model, the exhaust channel is provided with an air inlet for air to enter the refrigerator body, and an exhaust hole is provided at the end of the exhaust channel.

[0011] As a preferred embodiment of the exhaust structure of the refrigerator described in this utility model, the gas guiding assembly further includes an injection baffle, which is arranged at the top of the corner plate. An injection operation chamber is formed between the bottom of the injection baffle and the injection baffle. An injection port is provided on the injection baffle at the top of the injection operation chamber.

[0012] As a preferred embodiment of the exhaust structure of the refrigerator described in this utility model, the glue injection port is used to inject expanding foam. After the expanding foam enters the glue injection operation chamber, it enters the cavity of the refrigerator body and is then discharged from the exhaust channel.

[0013] The beneficial effects of this utility model are:

[0014] In this invention, the base plate layer and the baffle layer form a sealed exhaust channel through an adhesive layer. When the foaming material expands, the gas is discharged in a directional manner along a preset path. The foaming material is blocked outside the channel due to the narrow channel and the self-locking effect of curing, thus avoiding leakage and exhaust. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the exploded structure of a partial component of this utility model.

[0018] Figure 3 This is a side perspective structural diagram of the present invention.

[0019] Figure 4 For the present utility model Figure 3 A magnified schematic diagram of a portion of the structure.

[0020] Figure 5 This is a schematic diagram of the specific structure of the adhesive layer of this utility model.

[0021] In the diagram: 100, Box frame assembly; 101, Inner liner; 1011, Lower stiffening plate; 1012, Middle stiffening plate; 102, Outer shell; 1021, Back panel; 103, Corner panel;

[0022] 200. Gas flow guide assembly; 201. Base plate layer; 202. Baffle layer; 203. Adhesive layer; 204. Exhaust channel; 2041. Air inlet; 2042. Exhaust hole; 205. Glue injection baffle; 206. Glue injection operation chamber; 207. Glue injection port. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0027] Example 1

[0028] Reference Figures 1-4 This is the first embodiment of the present invention, which provides a refrigerator exhaust structure. This embodiment provides a refrigerator exhaust structure, including a cabinet frame assembly 100 and a gas guiding assembly 200.

[0029] Box frame assembly 100:

[0030] Inner liner 101: The main structure that constitutes the internal storage space of the refrigerator. It has a lower stiffening plate 1011 and a middle stiffening plate 1012 at the bottom to enhance the structural strength.

[0031] Outer shell 102: Covers the outside of the inner liner 101, its bottom is connected to the gas guide assembly 200, and a back plate 1021 is fixed to the rear side to seal the rear space of the refrigerator.

[0032] Corner plate 103: It has an L-shaped structure and is installed on both sides of the bottom of the outer casing 102 to reinforce the corner of the box and connect to the edge of the gas guide assembly 200.

[0033] Gas flow guide assembly 200:

[0034] Bottom plate layer 201: Fixedly installed at the bottom of the outer shell 102, usually made of metal sheet (such as galvanized steel sheet), as the supporting structure for the exhaust channel.

[0035] Baffle layer 202: It is set parallel above the bottom plate layer 201 and is made of smooth metal sheet (such as stainless steel sheet) to reduce the adhesion of foaming material.

[0036] Adhesive layer 203: High-temperature resistant double-sided adhesive tape is used and arranged along the edge of the base plate layer 201 to form an exhaust channel 204 between the base plate layer 201 and the baffle layer 202.

[0037] Air inlet 2041: Located on exhaust channel 204, used to guide air from inside the housing into exhaust channel 204.

[0038] Exhaust port 2042: Located at the end of exhaust channel 2041, used to exhaust air.

[0039] In actual use: After the foaming material is injected through the injection port 207, it expands inside the box, and the gas is squeezed into the area of ​​the lower stiffening plate 1011.

[0040] Gas enters the exhaust passage 204 through the air inlet 2041 and is finally discharged from the exhaust port 2042.

[0041] When the foaming material approaches the exhaust channel 204, it cannot enter the exhaust channel 204 due to the narrow channel and the gradual solidification of the foaming material, thus avoiding leakage.

[0042] Example 2

[0043] Reference Figure 5 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that, based on the first embodiment, the structure of the baffle layer 202 is further optimized to improve exhaust efficiency and anti-peeling performance.

[0044] The improvements to baffle layer 202 are as follows:

[0045] The contact surface between the baffle layer 202 and the adhesive layer 203 is provided with anti-peeling protrusions. These protrusions have a continuous wavy structure, which can enhance the bonding strength and prevent the foaming pressure from causing interlayer separation.

[0046] The baffle layer 202 is made of polished stainless steel plate, which further reduces the adhesion of foaming material and ensures that the exhaust channel 204 is unobstructed for a long time.

[0047] Example 3

[0048] Reference Figure 1 and 3 This is the third embodiment of the present invention. The difference between this embodiment and the first embodiment is that the glue injection baffle 205 is optimized based on the first embodiment.

[0049] Addition of glue injection baffle 205:

[0050] The glue injection baffle 205 is installed at the top of the corner plate 103, forming a glue injection operation cavity 206 between the baffle and the corner plate 103.

[0051] The injection baffle 205 is equipped with an injection port 207, which is used to precisely control the injection position of the foaming material.

[0052] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A refrigerator exhaust structure, characterized in that: include The cabinet frame assembly (100) includes a refrigerator cabinet consisting of an inner liner (101) and an outer shell (102). The inner liner (101) is provided with a lower stiffening plate (1011) and a middle stiffening plate (1012). The rear side of the outer shell (102) is connected to a back plate (1021). Gas guiding assembly (200) includes a bottom plate layer (201) and a baffle layer (202) arranged in parallel. The bottom plate layer (201) is fixedly installed on the bottom of the outer shell (102). The baffle layer (202) forms an exhaust channel (204) by maintaining a gap with the bottom plate layer (201) through an adhesive layer (203).

2. The exhaust structure of the refrigerator as described in claim 1, characterized in that: The cabinet frame assembly (100) also includes corner plates (103), which are arranged on both sides of the bottom of the outer shell (102). The corner plates (103) are L-shaped and cover the inner corner of the refrigerator cabinet, and are connected to the edge of the gas guide assembly (200).

3. The exhaust structure of the refrigerator as described in claim 1, characterized in that: The contact surface between the baffle layer (202) and the adhesive layer (203) is provided with anti-peeling protrusions, which are continuous wavy structures.

4. The exhaust structure of the refrigerator as described in claim 1, characterized in that: The adhesive layer (203) is a double-sided tape, arranged along the edge of the bottom plate layer (201), with an exhaust channel (204) formed in the middle.

5. The exhaust structure of the refrigerator as described in claim 1, characterized in that: The exhaust channel (204) is provided with an air inlet (2041) for air to enter the box, and an exhaust hole (2042) is provided at the end of the exhaust channel (204).

6. The exhaust structure of the refrigerator as described in claim 1, characterized in that: The gas guiding assembly (200) also includes a glue injection baffle (205), which is arranged at the top of the corner plate (103). A glue injection operation chamber (206) is formed between the bottom of the glue injection baffle (205) and the glue injection baffle (205). A glue injection port (207) is provided on the glue injection baffle (205) at the top of the glue injection operation chamber (206).

7. The exhaust structure of the refrigerator as described in claim 6, characterized in that: The injection port (207) is used to inject expanding foam. After the expanding foam enters the injection operation chamber (206), it enters the cavity of the refrigerator body and is then discharged from the exhaust hole (2042) at the end of the exhaust channel (204).

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