Leakage-proof structure for compressor and compressor

Abstract

The utility model relates to the technical field of compressors, in particular to a leakproof structure for a compressor and the compressor, the leakproof structure for the compressor comprises a tube shell, and welding spots are formed on the tube shell; and the sealing box is installed on the outer surface of the tube shell, and the sealing box is arranged outside the welding spot in a covering mode. According to the anti-leakage structure for the compressor and the compressor, the problem that a refrigerant leaks due to the fact that cracks are likely to be generated at welding spots of tack welding of the compressor can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressors, in particular to a leakage-proof structure for a compressor and the compressor. BACKGROUND

[0002] Spot welding of a compressor is a common fixing method for a frame and a shell, a hole is formed at the joint of the compressor shell and the frame, after the frame is fixed, the welding spot is aimed by a welding gun, the metal welding spot is melted by high temperature, and the frame and the shell of the compressor are combined together. The advantage of spot welding is simple operation and high efficiency.

[0003] However, if there is a problem in the welding process, such as the generation of bubbles, a small gap will be caused at the welding spot of the spot welding, which will cause the leakage of flammable and explosive refrigerant. Moreover, when the compressor is running, the joint of the frame and the shell is always subjected to alternating stress, and long-time running will cause fatigue failure, resulting in cracks at the welding spot, causing the leakage of flammable and explosive refrigerant in the compressor, and further causing safety accidents. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the purpose of the present application is to provide a leakage-proof structure for a compressor and the compressor, so as to solve the problem that cracks are easily caused at the welding spot of the spot welding of the compressor, resulting in the leakage of refrigerant.

[0005] According to the first aspect of the present application, a leakage-proof structure for a compressor is provided, wherein the leakage-proof structure for the compressor comprises: a shell, a welding spot is formed on the shell; and a sealing box, the sealing box is installed on the outer surface of the shell, and the sealing box covers the outside of the welding spot.

[0006] Preferably, the shell is formed with welding spots on opposite sides, and two sealing boxes are respectively covered on the two welding spots.

[0007] Preferably, the two sealing boxes are symmetrically arranged on the two sides of the shell.

[0008] Preferably, the sealing box is formed in a strip shape, and the sealing box is arranged along the circumference of the shell.

[0009] Preferably, the sealing box comprises: a box body part, an opening is formed on the first side surface of the box body part, and the first side surface of the box body part is in contact with the outer surface of the shell part; and a receiving groove, which is formed in the inside of the box body part and is communicated with the opening.

[0010] Preferably, the first side surface of the box body part is formed in an arc surface, and the first side surface is consistent with the arc shape of the outer surface of the shell.

[0011] Preferably, the box portion includes a second side surface disposed opposite to the first side surface, the second side surface being parallel to the first side surface.

[0012] Preferably, the sealing box is made of the same material as the tube shell.

[0013] Preferably, the sealing box and the tube shell are fixed by laser welding or low-temperature welding.

[0014] According to the second aspect of the present application, a compressor is provided, wherein the compressor comprises the anti-leakage structure for compressor as described above.

[0015] The anti-leakage structure for compressor and the compressor of the present application have a welding point formed on the tube shell. The sealing box is mounted on the outer surface of the tube shell, and the sealing box cover is arranged outside the welding point. In this way, when a crack is generated at the welding point, the sealing box can play a role of secondary sealing, avoiding direct leakage of flammable and explosive refrigerant in the environment. Furthermore, the problem of refrigerant leakage caused by cracks at the welding point of the spot welding of the compressor can be effectively solved.

[0016] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0018] Figure 1 is a schematic view of a compressor according to the present application.

[0019] Figure 2 is a sectional view of a compressor according to the present application.

[0020] Figure 3 is a schematic view of a tube shell of an anti-leakage structure for compressor according to the present application.

[0021] Figure 4 is a schematic view of a sealing box of an anti-leakage structure for compressor according to the present application.

[0022] Figure 5 is a schematic view of another angle of a sealing box of an anti-leakage structure for compressor according to the present application.

[0023] Reference numerals: 1 - tube shell; 10 - soldering point; 2 - sealing box; 20 - box body part; 21 - first side surface; 210 - opening; 22 - second side surface; 23 - accommodating groove; 3 - lower rack; 4 - compressor. DETAILED DESCRIPTION

[0024] The following detailed description is presented to help the reader understand the methods, devices, and / or systems described herein. Various changes, modifications, and equivalents can be used based on the understanding of this application's disclosure. For example, the order of the operations described herein can be altered, except that the operations must occur in the described order where this is necessary, for example, to preserve the state of the art. Furthermore, the description is not to be limited to the specific features taught, as the features described herein are merely exemplary among others. It should be appreciated that those skilled in the art can devise other means of implementing the described methods, devices, and / or systems without departing from the intended disclosure.

[0025] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, these examples have been provided so that this disclosure will be thorough and complete, and will fully convey the scope of the intended disclosure to those skilled in the art. The examples described herein will fully convey the scope of the methods, devices, and / or systems to those skilled in the art, once the disclosure has been understood.

[0026] Throughout the specification, when an element (such as a layer, region, or substrate) is referred to as being "on" another element, "connected to" another element, "coupled to" another element, "adjacent to" another element, or "covering" another element, it can be directly on, connected, coupled, adjacent to, or covering the other element or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on," "directly connected to," "directly coupled to," "directly adjacent to," or "directly covering" another element, there are no other elements interposed therebetween.

[0027] As used herein, the term "and / or" includes any one of the listed items and any combination of two or more of the listed items.

[0028] Although terms such as "first" and "second" and "third" can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, terms of a first element, component, region, layer or section described herein could also be termed a second element, component, region, layer or section without departing from the teachings of the examples.

[0029] For ease of description, spatial relationship terms, such as "on", "upper", "under", and "lower", can be used herein to describe the relationship between one element and another element as shown in the drawings. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over, an element described as on "upper" or "upper" relative to another element would then be oriented "under" or "lower" relative to the other element. Accordingly, the term "on" encompasses both an "on" and "under" orientation based on the spatial orientation of the device. The device can be positioned in other ways (e.g., rotated 90 degrees or at other orientations) and an appropriate recitation of the spatial relationship terms will be made with respect to the spatial orientation of the device as used herein.

[0030] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of examples. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has", "having" and "contains", "containing" are inclusive and do not exclude other

[0031] Variations in shapes depicted in the drawings can occur as a result of manufacturing processes and / or tolerances. Thus, the examples described herein are not limited to the precise shapes shown in the drawings, but include variations in shapes that would occur as a result of manufacturing processes.

[0032] Features of the examples described herein can be combined with one another as would be apparent to one of ordinary skill in the art after having the benefit of the present disclosure. Furthermore, although examples are described herein with various configurations, other configurations are possible as would be apparent to one of ordinary skill in the art after having the benefit of the present disclosure.

[0033] As Figures 1 to 5 As shown in the drawings, a leakage prevention structure for a compressor according to a first aspect of the present application includes a casing 1 and a seal box 2.

[0034] In the following description, reference will be made to Figures 1 to 5 The specific structure of the aforementioned components and their connection relationships in the leak-proof structure used in the compressor are described in detail.

[0035] like Figures 1 to 5 As shown, in this embodiment, a lower frame 3 and an upper frame (not shown) can be installed inside the casing 1. The lower frame 3 and the upper frame can be fixed to the casing 1 by spot welding. Weld points 10 are formed on the outer surface of the casing 1. A sealing box 2 can be installed on the outer surface of the casing 1, and the sealing box 2 can cover the outside of the weld points 10. With this arrangement, when a crack occurs at the weld point 10, the sealing box 2 can provide a secondary seal to prevent flammable and explosive refrigerant from leaking directly into the environment.

[0036] Preferred, such as Figures 1 to 3 As shown, in this embodiment, the shell 1 can be a cylindrical structure, and the lower frame 3 can be fixed radially inside the shell 1. The two ends of the lower frame 3 along its length can be welded to the shell 1. The upper frame can be located above the lower frame 3, and the upper frame can be welded to the shell 1 on its four sides. Since spot welding requires opening holes at the joints of the shell 1, lower frame 3, and upper frame of the compressor 4, and then welding with a welding gun, weld points 10 are formed on opposite sides of the outer surface of the shell 1. These weld points are located at the joints of the shell 1 and the lower frame 3 along their length, and at the joints of the shell 1 and the upper frame. In this case, the number of sealing boxes 2 can be six, allowing six sealing boxes 2 to cover multiple weld points 10 on the outer surface of the shell 1 (only the weld points 10 and sealing boxes 2 corresponding to the two ends of the lower frame 3 are shown in the figure; the upper frame is similar and will not be described further), to prevent leakage at any weld point 10.

[0037] Preferred, such as Figures 1 to 5 As shown, in this embodiment, the sealing box 2 can be formed in a strip shape. Since the weld points 10 are arranged in a row on the outer surface of the casing 1, making the sealing box 2 strip-shaped can reduce weight while covering as many weld points 10 as possible within it. The sealing box 2 can be arranged circumferentially along the casing 1 so that the sealing box 2 can fit against the outer surface of the casing 1. In addition, preferably, a detection device can also be installed on the sealing box 2 to detect whether refrigerant leakage has occurred.

[0038] Preferred, such as Figures 1 to 5As shown, in this embodiment, the sealed box 2 may include a box body 20 and a receiving groove 23. The box body 20 may be a curved cuboid box. A first side 21 of the box body 20 may have an opening 210. The first side 21 may contact the outer surface of the casing 1, such that the box body 20 covers the solder joint 10 within the opening 210. The receiving groove 23 may be formed inside the box body 20 and communicates with the opening 210. The receiving groove 23 is used to contain refrigerant leaking from the solder joint 10, preventing direct leakage of refrigerant to the outside. The receiving groove 23 may be a curved cuboid groove, making its shape similar to that of the box body 20, thus maximizing the utilization of the internal space of the box body 20 to accommodate as much refrigerant as possible.

[0039] Preferred, such as Figures 1 to 5 As shown, in this embodiment, the first side surface 21 of the box body 20 can be formed as an arc surface, and the first side surface 21 can be consistent with the arc shape of the outer surface of the tube shell 1. This allows the first side surface 21 of the box body 20 to fit against the outer surface of the tube shell 1 when the sealing box 2 is placed over the weld point 10, thereby preventing refrigerant leakage from the receiving groove 23.

[0040] In addition, such as Figures 1 to 5 As shown, in this embodiment, the box body 20 may further include a second side 22 disposed opposite to the first side 21. The second side 22 may be parallel to the first side 21, making the shape of the box body 20 more regular. Additionally, as... Figure 2 As shown, the horizontal dimension of the sealing box 2 can be equal to the width of the lower frame 3, so that the sealing box 2 can cover all the welding points 10 within it.

[0041] Preferred, such as Figures 1 to 5 As shown, in this embodiment, the sealing box 2 and the shell 1 can be fixed by laser welding or cryogenic welding. Because cryogenic welding has low heat input and minimal heat-affected zone in the welding area, it can significantly reduce the thermal impact of welding on surrounding components, thus reducing the risk of deformation of the lower frame 3 and the shell 1. Preferably, the sealing box 2 and the shell 1 can be made of the same or similar materials to ensure the reliability of the welding.

[0042] Furthermore, preferably, such as Figures 1 to 5 As shown, in this embodiment, the sealing boxes 2 can be symmetrically arranged on opposite sides of the tube shell 1. This arrangement allows the two symmetrical sealing boxes 2 to counteract each other's stresses when the sealing boxes 2 are welded to the tube shell 1, resulting in uniform thermal deformation during welding and reducing the overall deformation of the lower frame 3 and the tube shell 1.

[0043] Not limited to this, in the embodiment, the sealing box 2 is welded with the pipe shell 1, which is only a preferred case in the embodiment, as long as the sealing box 2 can be tightly fixed outside the welding spot 10, other connection modes between the sealing box 2 and the pipe shell 1 can also be adopted, for example, the sealing box is fixed to the shell by means of adhesion, or a flexible sealing element (such as a rubber sealing ring or a silica gel sealing pad) is additionally arranged at the box opening of the sealing box, and a mechanical connection (such as bolt fastening) is adopted for fixation.

[0044] In addition, as shown in Figure 1 and Figure 2 According to the second aspect of the present application, a compressor 4 is provided, which comprises the anti-leakage structure for compressor as described above.

[0045] The specific installation process can include the following steps: first, the lower rack 3 and the pipe shell 1 are cleaned and deoiled to ensure that the welding surface is free of impurities. Then, the lower rack 3 of the compressor 4 is preliminarily fixed to the pipe shell 1 by spot welding to ensure the accuracy of the installation position. Then, the sealing box 2 is low-temperature welded on the outer surface of the pipe shell 1, and the welding spot 10 is covered in the sealing box 2. During welding, the two sealing boxes 2 can be symmetrically welded on both sides of the pipe shell 1. Finally, the welded part is subjected to non-destructive testing to ensure the welding quality, and pressure test is performed to confirm that the refrigerant does not leak.

[0046] The anti-leakage structure for compressor can effectively prevent refrigerant leakage and reduce the safety risk during operation of the compressor 4. In addition, the sealing box 2 can provide additional support for the spot welding area, help to disperse the mechanical stress and vibration borne by the welding spot 10, avoid stress concentration, help to reduce fatigue damage of the spot welding position, and prolong the service life of the welding spot 10. When the sealing box 2 has a risk of leakage, it can be repaired by replacing or reinforcing the sealing box 2, without the need for large-scale repair of the spot welding position, thereby reducing the maintenance cost.

[0047] Finally, it should be noted that the above-described embodiments are merely specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit them, and the protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily think of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed by the present application, or make equivalent replacements to some technical features; and these modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A leak-proof structure for a compressor, disposed on the compressor, characterized in that, The leak-proof structure for the compressor includes: Tube shell, on which weld points are formed; and A sealing box is installed on the outer surface of the tube shell and covers the outside of the weld joint.

2. The leak-proof structure for a compressor according to claim 1, characterized in that, The shell has weld points on opposite sides, and the two sealing boxes are respectively covered by the two weld points.

3. The anti-leakage structure for a compressor according to claim 2, characterized in that, The two sealing boxes are symmetrically arranged on both sides of the tube shell.

4. The leak-proof structure for a compressor according to claim 1, characterized in that, The sealing box is formed in the shape of a strip and is arranged along the circumference of the tube shell.

5. The leak-proof structure for a compressor according to claim 4, characterized in that, The sealed box includes: The box body portion has an opening formed on its first side, and the first side of the box body portion contacts the outer surface of the tube shell portion; and A receiving groove is formed inside the housing portion, and the receiving groove communicates with the opening.

6. The leak-proof structure for a compressor according to claim 5, characterized in that, The first side of the box body is formed as an arc surface, and the arc shape of the first side surface is consistent with that of the outer surface of the tube shell.

7. The leak-proof structure for a compressor according to claim 6, characterized in that, The box body includes a second side disposed opposite to the first side, and the second side is parallel to the first side.

8. The leak-proof structure for a compressor according to any one of claims 1 to 7, characterized in that, The sealing box is made of the same material as the tube shell.

9. The leak-proof structure for a compressor according to any one of claims 1 to 7, characterized in that, The sealing box is fixed to the tube shell by laser welding or low-temperature welding.

10. A compressor, characterized in that, The compressor includes a leak-proof structure for the compressor according to any one of claims 1 to 9.

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