Sandwich foam board leakage-proof structure and refrigerator
By designing a leak-proof structure with nested tubes on the refrigerator interlayer foam board and utilizing the flow and solidification characteristics of the foaming liquid, the problem of leakage in the initial foaming stage is solved, the refrigerator manufacturing process is simplified, and production efficiency is improved.
Patent Information
- Application Number
- CN202422678933.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-11-04
AI Technical Summary
During the manufacturing process of existing refrigerators, the reserved holes in the sandwich foam panels are prone to leakage during the initial foaming phase, which requires temporary blocking and removal of blocking equipment, increasing production costs and complexity.
A leak-proof structure for the sandwich foam board is designed, in which leak-proof holes are formed by nesting the tubes on the holes on both sides of the board. The fluidity and curing characteristics of the foaming liquid are utilized to solidify it before foaming to prevent leakage.
The refrigerator manufacturing process is simplified, the leak-proofing process and the use of auxiliary materials are reduced, and the production rate and efficiency are improved.
Smart Images
Figure CN223319352U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field, in particular to a sandwich foam board leakage-proof structure and a refrigerator. Background Art
[0002] A sandwich foam board is a composite board consisting of two layers of solid material (usually metal or plastic) and a middle foam material. The middle foam layer is usually made of foam materials such as polyurethane, polystyrene or polyvinyl chloride, and has the characteristics of being lightweight, heat-insulating, sound-insulating, and impact-resistant. For example, in the manufacturing process of existing refrigerators, the middle part of the box needs to be filled with foaming liquid as an insulation layer, so the box is equivalent to a sandwich foam board. Since the foaming liquid still has good fluidity in the initial stage of foaming, the box needs to have good sealing performance. However, it is inevitable that some through holes connecting the inside and outside need to be reserved on the box, such as wire holes, air duct holes or pressure balance holes. For this reason, these holes need to be temporarily blocked when the foaming liquid is injected into the box. For this purpose, special equipment and a professional workbench are required. After foaming, the temporary blocking equipment needs to be removed, which brings unnecessary trouble to refrigerator manufacturing and increases production costs. Utility Model Content
[0003] In order to solve the problem of liquid leakage in the holes of the sandwich foam board, the utility model proposes a leakage-proof structure of the sandwich foam board, which utilizes the tubes on the holes on both sides of the board body to nest with each other to form leakage-proof holes with a simple structure.
[0004] The technical solution adopted by the present invention is to design a leakage-proof structure for a sandwich foam board to prevent the foaming liquid forming the sandwich from entering the reserved holes of the board body, the board body includes a first wall panel and a second wall panel respectively located on both sides of the sandwich, the reserved holes include a first port located on the first wall panel and a second port located on the second wall panel, the leakage-proof structure includes a first tube body connected to the first port, and a second tube body connected to the second port, and the opposite ends of the first tube body and the second tube body are nested and connected.
[0005] In certain embodiments, a radial gap between the nested portions of the first tube body and the second tube body is between 0.5 mm and 0.7 mm, and a nested length of the first tube body and the second tube body is greater than 15 mm.
[0006] In some embodiments, the first tube body is nested in the second tube body, and a stopper portion for stopping the end of the first tube body is circumferentially provided on the inner wall of the second tube body.
[0007] In some embodiments, a guide slope is provided on the outer side of the end of the first tube body nested in the second tube body, and an interference slope corresponding to the guide slope is provided between the inner wall of the second tube body and the resisting portion.
[0008] In some embodiments, the first tube body is nested in the second tube body, and an annular slot for inserting the end of the second tube body is coaxially provided outside the first tube body.
[0009] In some embodiments, the width of the annular slot is greater than 3 mm, and the length of the annular slot is greater than 6 mm.
[0010] In certain embodiments, a first locking groove for locking an edge of the first port is circumferentially provided at the end of the first tube.
[0011] In some embodiments, a second groove for locking the edge of the second port is circumferentially provided at the end of the second tube.
[0012] In certain embodiments, an outer wall of the first tube body and / or the second tube body located within the interlayer is provided with a protrusion.
[0013] A refrigerator, wherein the refrigerator body comprises the sandwich foam board anti-leakage structure.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] This utility model utilizes tubes nested within the holes on either side of the plate to form leak-proof holes. This simple structure utilizes the inherent properties of the foaming liquid, combined with its curing time, to allow the foaming liquid to flow within the structure, ensuring that it reaches the curing point before flowing out of the box, completing the foaming process. Refrigerator cabinets using this structure no longer require leak-proofing procedures, thus reducing the number of pre-foaming steps and the use of leak-proofing materials, significantly increasing the production rate of refrigerator cabinet pre-assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The present invention is described in detail below with reference to specific embodiments and accompanying drawings. To illustrate details and facilitate understanding of its principles, the drawings are not necessarily drawn to scale, and similar reference numerals may describe similar components in different views. The accompanying drawings generally illustrate the embodiments discussed herein by way of example and not limitation. Among them:
[0017] Figure 1 This is a schematic diagram of a portion of a box equipped with a sandwich foam board leak-proof structure.
[0018] Figure 2 Schematic diagram of the first tube.
[0019] Figure 3 yes Figure 2 Schematic diagram of the right side.
[0020] Figure 4 Schematic diagram of the second tube.
[0021] Figure 5 yes Figure 4 Schematic diagram of the left side.
[0022] Figure 6 These are schematic diagrams of the three gaps L1, L2, and L3.
[0023] Figure 7 It is a schematic diagram showing that the first tube body, the second tube body and the box wall are integrated.
[0024] Figure 8 yes Figure 7 Schematic diagram of the AA section.
[0025] In the figure, 1, first wall panel; 2, second wall panel; 3, first tube body; 4, second tube body; 5, interlayer; 7, blocking portion; 8, guide slope; 9, annular slot; 10, first card slot; 11, second card slot; 12, raised portion; 13, screw hole. DETAILED DESCRIPTION
[0026] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments, and the following embodiments do not limit the utility model involved in the claims. In addition, not all combinations of features described in the embodiments are necessarily required for the solution of the utility model.
[0027] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.
[0028] Example
[0029] A sandwich foam board is a composite board consisting of two layers of solid material (usually metal or plastic) and a middle foam material. The middle foam layer is usually made of foam materials such as polyurethane, polystyrene or polyvinyl chloride, and has the characteristics of being lightweight, heat-insulating, sound-insulating, and impact-resistant. For example, in the manufacturing process of existing refrigerators, the middle part of the box needs to be filled with foaming liquid as an insulation layer, so the box is equivalent to a sandwich foam board. Since the foaming liquid still has good fluidity in the initial stage of foaming, the box needs to have good sealing performance. However, it is inevitable that some through holes connecting the inside and outside need to be reserved on the box, such as wire holes, air duct holes or pressure balance holes. For this reason, these holes need to be temporarily blocked when the foaming liquid is injected into the box. For this purpose, special equipment and a professional workbench are required. After foaming, the temporary blocking equipment needs to be removed, which brings unnecessary trouble to refrigerator manufacturing and increases production costs.
[0030] For this reason, Figure 1As shown, a sandwich foam board leak-proof structure for a refrigerator box is provided. The sandwich foam board leak-proof structure is used to prevent the foaming liquid forming the interlayer 5 from entering the reserved holes of the board body. The reserved holes can be, for example, wire holes, air duct holes, or pressure balance holes. The board body serves as the board body of the box.
[0031] The plate body includes a first wall plate 1 and a second wall plate 2 respectively located on both sides of the interlayer 5 , and the reserved hole includes a first port located on the first wall plate 1 and a second port located on the second wall plate 2 .
[0032] like Figure 2 、 3 As shown in Figures 4 and 5, the leakage-proof structure includes a first tube body 3 connected to the first port, and a second tube body 4 connected to the second port. The opposite ends of the first tube body 3 and the second tube body 4 are nested and connected, that is, the end of one tube body is nested into the end of the other tube body, thereby forming a reserved hole connecting the two sides of the plate body. The nested connection method makes the plate body assembly simple and can effectively prevent the foaming liquid from entering the reserved hole.
[0033] By ensuring that the portion where the first tube body 3 and the second tube body 4 are nested and combined has a sufficient length, a sufficient flow-blocking path can be formed for the entry of the foaming liquid, so that the foaming liquid condenses and solidifies before entering the interior of the tube body when entering the gap between the two nested tube bodies, thereby preventing the foaming liquid from entering the reserved hole, thereby forming a leak-proof structure of the sandwich foam board.
[0034] The first tube body 3 and the second tube body 4 can be integrally formed with the side walls of the plate body, or can be independent components plugged into the ports. In this embodiment, the first tube body 3 and the second tube body 4 are respectively connected to the first port and the second port by plugging.
[0035] Furthermore, a radial gap t between the nested portions of the first tube body and the second tube body is between 0.5 mm and 0.7 mm, preferably between 0.6 mm, and a nested length of the first tube body and the second tube body is greater than 15 mm.
[0036] In this way, the resistance of the nesting gap 6 between the first tube body and the second tube body to the foaming liquid can be effectively increased, thereby effectively preventing the foaming liquid from flowing along the nesting gap between the first tube body and the second tube body.
[0037] The first tube body 3 is nested in the second tube body 4 , and a stopper 7 for stopping the end of the first tube body 3 is provided on the inner wall of the second tube body 4 .
[0038] The resisting portion 7 is in close contact with the end of the first tube body 3, thereby forming a sealed gap between the first tube body 3 and the second tube body 4, further improving the sealing performance of the foaming liquid and preventing the foaming liquid from entering the interior of the tube body through the nesting gap between the two.
[0039] A guiding slope 8 is provided on the outer side of the end of the first tube body 3 nested in the second tube body 4 , and a resisting slope corresponding to the guiding slope 8 is provided between the inner wall of the second tube body 4 and the resisting portion 7 .
[0040] The guiding slope 8 at the end of the first tube body 3 plays a guiding role when the first tube body 3 is inserted into the second tube body 4 , thereby facilitating smooth insertion of the first tube body 3 into the second tube body 4 .
[0041] The first tube body 3 is nested within the second tube body 4. An annular slot 9 is coaxially disposed on the outside of the first tube body 3 for inserting the end of the second tube body 4. The annular slot 9 extends the length of the external foaming liquid that enters the nesting gap between the first tube body 3 and the second tube body 4, thereby effectively preventing the foaming liquid from flowing into the tube bodies along the nesting gap between the first tube body 3 and the second tube body 4.
[0042] The width of the annular slot is greater than 3 mm, and the length of the annular slot is greater than 6 mm. This can effectively increase the resistance of the nesting gap between the first tube body and the second tube body to the foaming liquid, thereby effectively preventing the foaming liquid from flowing along the nesting gap between the first tube body and the second tube body.
[0043] A first retaining groove 10 is circumferentially provided at the end of the first tube body 3 to retain the edge of the first port. The retaining groove is located circumferentially outside the annular slot 9. The first retaining groove 10 retains the edge of the first port, thereby securing the first tube body 3 relative to the first port and preventing the first tube body 3 from axially moving relative to the plate body.
[0044] The second end of the second tube 4 is circumferentially provided with a second groove 11 for locking the edge of the second port. The second groove 11 locks the edge of the second port, thereby fixing the second tube 4 relative to the second port and preventing the second tube 4 from moving axially relative to the plate.
[0045] The outer wall of the first tube body 3 and / or the second tube body 4 located in the interlayer 5 is provided with a raised portion 12. In this embodiment, the outer wall of the first tube body 3 and the second tube body 4 located in the interlayer 5 is provided with a raised portion 12. After the foaming liquid solidifies, the raised portion is embedded in the solidified foaming layer, thereby fixing the first tube body 3 and the second tube body 4 relative to the plate body.
[0046] The end of the first tube body 3 is provided with a screw hole 13 and can be connected to the first wall plate 1 by means of bolts.
[0047] like Figure 6 As shown in the figure, in the initial stage of foaming, the foaming liquid has good fluidity. During the foaming and solidification process, the foaming liquid flows into the L2, L3, and L1 sections in sequence. L1, L2, and L3 are the lengths of the three gaps in the two assembly structures. t is the width of the three gaps L1, L2, and L3 marked in the figure. The length of L1+L2+L3 is required to be greater than 24 (mm). The value range of the leak-proof transition gap t is between 0.5mm and 0.7mm. Under the above-set nested gap spacing, the foaming liquid in the gap will solidify before flowing out of the end of the L1 section, so it will not leak into the internal area of the tube body, achieving the effect of sealing and plugging leaks.
[0048] This embodiment can effectively solve the problem of foaming and leakage of the box body; the leakage-proof structure of the utility model utilizes the characteristics of the foaming liquid itself, combined with the solidification time of the foaming liquid, to allow the foaming liquid to flow in the structure, and can ensure that it reaches the solidification point before flowing out of the box body to complete the foaming.
[0049] The refrigerator body using this structure does not need to undergo a leak-proofing process at the use position, so this structure can reduce the number of processes before the refrigerator body is foamed, reduce the use of leak-proof auxiliary materials, and greatly improve the pre-assembly production rate of the refrigerator body.
[0050] like Figure 7 、 8 , which is a schematic diagram of an embodiment in which the first tube body, the second tube body and the side wall panels of the plate body are integrally formed.
[0051] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.
[0052] Although some terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention. The execution order of actions, steps, etc. in the devices and methods shown in the specification and drawings can be implemented in any order as long as there is no special explicit limitation on the order, and as long as the output of the previous processing is not used in the subsequent processing. Similar sequential terms (for example, "first", "next", "secondly", "again", "then", etc.) used for the convenience of description do not mean that they must be implemented in such an order.
[0053] Those skilled in the art should understand that all directional references (for example, above, below, upward, up, downward, down, top, bottom, left, right, vertical, horizontal, etc.) are used descriptively in the drawings to facilitate the reader's understanding, and do not represent limitations (for example, on position, orientation or use, etc.) on the scope of the invention as defined by the appended claims. They are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. The directional words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.
[0054] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0055] In addition, some vague terms (e.g., substantially, certain, approximately, etc.) may refer to slight imprecision or slight deviation of conditions, quantities, values, or dimensions, some of which are within manufacturing variations or tolerances. It should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meanings and should not be construed as limiting the scope of protection of this application.
Claims
1. A leak-proof structure for a sandwich foam board, used to prevent the foaming liquid forming the sandwich from entering the reserved hole of the board body, the board body comprising a first wall plate and a second wall plate respectively located on both sides of the sandwich, the reserved hole comprising a first port located on the first wall plate and a second port located on the second wall plate, characterized in that: The anti-leakage structure includes a first tube body connected to the first port, and a second tube body connected to the second port. The opposite ends of the first tube body and the second tube body are nested and communicated.
2. The anti-leakage structure of sandwich foam board according to claim 1, characterized in that: The radial gap between the nested parts of the first tube body and the second tube body is 0.6 mm, and the nested length of the first tube body and the second tube body is greater than 15 mm.
3. The anti-leakage structure of sandwich foam board according to claim 1, characterized in that: The first tube body is nested in the second tube body, and a blocking portion for blocking the end of the first tube body is circumferentially provided on the inner wall of the second tube body.
4. The anti-leakage structure of sandwich foam board according to claim 3, characterized in that: A guiding slope is provided on the outer side of the end portion of the first tube body which is nested in the second tube body, and a resisting slope corresponding to the guiding slope is provided between the inner wall of the second tube body and the resisting portion.
5. The anti-leakage structure of sandwich foam board according to claim 1, characterized in that: The first tube body is nested in the second tube body, and an annular slot for inserting the end of the second tube body is coaxially provided outside the first tube body.
6. The anti-leakage structure of sandwich foam board according to claim 5, characterized in that: The width of the annular slot is greater than 3 mm, and the length of the annular slot is greater than 6 mm.
7. The anti-leakage structure of sandwich foam board according to claim 1, characterized in that: A first locking groove for locking the edge of the first port is circumferentially provided at the end of the first tube.
8. The anti-leakage structure of sandwich foam board according to claim 1, characterized in that: A second locking groove for locking the edge of the second port is circumferentially provided at the end of the second tube.
9. The anti-leakage structure of sandwich foam board according to claim 1, characterized in that: The outer wall of the first tube body and / or the second tube body located in the interlayer is provided with a protrusion.
10. A refrigerator, characterized in that The refrigerator body includes the sandwich foam board anti-leakage structure according to any one of claims 1 to 9.