Compressor plastic shell and compressor

Abstract

The present invention discloses a plastic shell for a compressor, comprising an upper shell, a lower shell, and a base. The upper shell and the lower shell are threadedly connected, a locking device is provided between the upper shell and the lower shell, and the base is fixedly arranged at the bottom of the lower shell for supporting the shell; a locking block is provided on the outer wall of the upper shell, and a locking plate is provided on the outer wall of the lower shell; the locking device comprises a locking column and a locking nut threadedly connected to the locking column, the locking column passes through the locking block and is slidably arranged with the locking block, a locking groove is defined at the lower portion of the locking column, a locking hole is defined on the locking plate, the locking column is inserted into the locking hole, the locking plate is clamped in the locking groove, and the locking nut is located above the locking block. The present invention uses plastic material to make the compressor shell, which can reduce the overall weight of the compressor, and does not require welding process, saving a lot of energy, and can significantly reduce production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a compressor plastic shell and a compressor. Background Art

[0002] A compressor is a driven fluid machine that boosts low-pressure gas to high-pressure gas. It is the heart of the refrigeration system. It draws low-temperature, low-pressure refrigerant gas from the intake pipe, compresses it through the motor-driven piston, and discharges high-temperature, high-pressure refrigerant gas into the exhaust pipe, providing power for the refrigeration cycle.

[0003] The existing compressor casing is mainly made of stamped steel plates, and the upper and lower shells are formed by stamping. After the internal parts of the compressor are assembled and placed in the compressor casing, the upper and lower shells are fixed together by welding to form a closed space inside the casing. The base, pipelines and other components connected to the casing need to be fixed to the casing by welding. During the stamping process of the casing, lubricating oil needs to be applied to the steel plate to facilitate stamping. Therefore, lubricating oil will adhere to the surface of the casing, and high-temperature cleaning, decontamination and degreasing are required before welding. A large amount of water resources is consumed in this process, resulting in waste of resources. A large amount of manpower and electricity resources required for welding equipment are also required during the welding process, increasing production costs. If it is not fixed by welding, the connection strength may be low. The inside of the casing needs to be filled with refrigerant, and the refrigerant pressure inside the casing is greater than the external pressure. If the connection strength is low, leakage may occur, causing the compressor to be unusable. Summary of the Invention

[0004] The object of the present invention is to provide a compressor plastic housing and a compressor in view of the above-mentioned deficiencies in the prior art.

[0005] In order to solve the above problems, the technical solution adopted by the present invention is:

[0006] A compressor plastic shell includes an upper shell, a lower shell and a base. The upper shell and the lower shell are threadedly connected. A locking device is provided between the upper shell and the lower shell. The base is fixedly arranged on the bottom of the lower shell for supporting the shell.

[0007] Furthermore, a locking block is provided on the outer wall of the upper shell, and a locking sheet is provided on the outer wall of the lower shell.

[0008] Furthermore, the locking device includes a locking column and a locking nut threadedly connected to the locking column, the locking column passes through the locking block and is slidably arranged with the locking block, a locking groove is provided at the lower part of the locking column, a locking hole is provided on the locking plate, the locking column is inserted into the locking hole, the locking plate is clamped in the locking groove, and the locking nut is located above the locking block.

[0009] Furthermore, a circular groove is provided on the outer wall of the lower shell, and the locking piece is rotatably disposed in the groove.

[0010] Furthermore, the locking devices are provided in multiple groups, and the multiple groups of locking devices are evenly arranged on the locking block along the circumferential direction.

[0011] Furthermore, radial cross-sections of the locking block and the locking plate are both regular polygonal structures.

[0012] Furthermore, a clamping block is provided in the groove, and the inner ring of the locking piece is provided with a clamping slot adapted to the clamping block, and the clamping block can be clamped in the clamping slot.

[0013] Furthermore, the upper shell and the lower shell are both integrally formed by injection molding.

[0014] Furthermore, the upper shell and the lower shell are provided with reinforcing ribs.

[0015] A compressor comprises the above-mentioned compressor plastic shell, wherein a refrigeration device is arranged in the compressor plastic shell.

[0016] The beneficial effects of adopting the above technical solution are:

[0017] 1. The compressor housing of the present invention is made of plastic through injection molding, which is light in weight and low in cost. The weight of the compressor housing made of plastic is only 20% of that of the steel plate housing, which greatly reduces labor costs and energy consumption.

[0018] 2. The compressor housing of the present invention is made of plastic material, so no lubricating oil is required during the production process, and no subsequent high-temperature cleaning, decontamination, and degreasing process is required, which can save water resources and is beneficial to environmental protection;

[0019] 3. The upper and lower shells of the present invention are connected by threads, and the pipes and the shell are embedded in the shell during the injection molding process. Therefore, welding is not required, which can save manpower, materials and production costs. A locking device is provided between the upper and lower shells to enhance the connection strength between the upper and lower shells and prevent leakage.

[0020] 5. The compressor housing of the present invention is made of plastic material, which can reduce the noise of the compressor and reduce vibration. The noise can be reduced from 37dB of the metal housing to 34dB, which is quieter during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 yes Figure 1 A magnified view of part A;

[0023] Figure 3 is an exploded view of the present invention;

[0024] Figure 4 is a perspective schematic diagram of another embodiment of the present invention;

[0025] Figure 5 is an exploded view of another embodiment of the present invention;

[0026] Figure 6 is a three-dimensional schematic diagram of the lower shell of the present invention;

[0027] Figure 7 It is a three-dimensional schematic diagram of the lower shell of the present invention from another angle.

[0028] In the figure: 1 is the upper shell, 2 is the lower shell, 3 is the base, 4 is the locking block, 5 is the locking plate, 6 is the locking column, 7 is the locking nut, 8 is the locking groove, 9 is the locking hole, 10 is the groove, 11 is the clamping block, 12 is the clamping groove, 13 is the reinforcing rib, 14 is the sealing ring, 15 is the rib plate, 16 is the support column, 17 is the support pad, 18 is the compression device, and 19 is the spring. DETAILED DESCRIPTION

[0029] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] like Figures 1 to 3As shown, a compressor plastic shell includes an upper shell 1, a lower shell 2 and a base 3. The upper shell 1 and the lower shell 2 are threadedly connected, and a locking device is provided between the upper shell 1 and the lower shell 2. The base 3 is fixedly arranged at the bottom of the lower shell 2 for supporting the shell.

[0033] Traditional refrigerants use Freon, and Freon has a high pressure after being filled into the compressor, so a shell made of steel plates that can withstand the high pressure is required. The shell is fixedly connected by welding to enable the compressor to work normally without leakage. After continuous development and progress, through the update of refrigerants and plastic materials, the compressor shell in the present invention is made of plastic material, which can withstand the pressure of the refrigerant without leakage and enable the compressor to work normally. The compressor plastic shell in the present invention is assembled by an upper shell 1 and a lower shell 2. The bottom of the upper shell 1 is provided with an internal thread, and the upper part of the lower shell 2 is provided with an external thread. The upper shell 1 and the lower shell 2 are connected by threads, so that the upper shell 1 and the lower shell 2 are assembled together without welding, while maintaining a high-strength connection to prevent refrigerant leakage.

[0034] Furthermore, a locking block 4 is provided on the outer wall of the upper shell 1, and a locking plate 5 is provided on the outer wall of the lower shell 2. The radial cross-sections of the locking block 4 and the locking plate 5 are both regular polygonal structures. The polygonal structures of the locking block 4 and the locking plate 5 in the present invention facilitate the locking of the upper shell 1 and the lower shell 2. Specifically, the radial cross-sections of the locking block 4 and the locking plate 5 are regular hexagonal structures, similar to a nut, and can be tightened with a wrench for ease of operation.

[0035] Furthermore, the locking device includes a locking column 6 and a locking nut 7 threadedly connected to the locking column 6, the locking column 6 passes through the locking block 4 and is slidably arranged with the locking block 4, a locking groove 8 is provided at the lower part of the locking column 6, a locking hole 9 is provided on the locking plate 5, the locking column 6 is inserted into the locking hole 9, the locking plate 5 is clamped in the locking groove 8, and the locking nut 7 is located above the locking block 4.

[0036] The locking block 4 of the present invention is provided with a through hole that passes through the locking block 4 in the vertical direction. The locking column 6 is inserted into the through hole and can slide up and down in the through hole. When the upper shell 1 and the lower shell 2 are threadedly connected and locked with each other, in order to further strengthen the connection strength between the upper shell 1 and the lower shell 2, the locking column 6 is inserted into the locking hole 9. A locking groove 8 is horizontally provided on the side wall of the locking column 6. The width of the locking groove 8 is the same as the thickness of the locking piece 5, so the locking piece 5 can be inserted into the locking groove 8; when the locking piece 5 is inserted into the lock After the locking groove 8 is tightened, the locking nut 7 is tightened. The locking nut 7 rotates on the locking column 6. Since the locking nut 7 is located above the locking block 4, the locking nut 7 is blocked by the locking block 4 and cannot move downward during the rotation. The locking nut 7 drives the locking column 6 to move upward when rotating, and a locking plate 5 is provided in the locking groove 8. Therefore, the locking plate 5 can hinder the locking column 6 from moving upward. When the locking nut 7 is tightened, the connection strength between the upper shell 1 and the lower shell 2 can be strengthened to prevent refrigerant leakage.

[0037] Furthermore, a circular groove 10 is provided on the outer wall of the lower shell 2, and the locking piece 5 is rotatably set in the groove 10. The locking piece 5 is rotatably set in the groove 10, which can prevent the locking column 6 from being unable to align with the locking hole 9. When the upper shell 1 and the lower shell 2 are locked, the locking column 6 cannot be accurately inserted into the locking hole 9, the locking piece 5 is rotated so that the locking hole 9 is located directly below the locking column 6, and the locking column 6 is inserted into the locking hole 9. After the locking column 6 is inserted into the locking hole 9, the locking piece 5 is continued to be rotated so that the locking piece 5 is inserted into the locking groove 8, and then the locking nut 7 is tightened to lock the upper shell 1 and the lower shell 2.

[0038] Furthermore, the locking device is provided with multiple groups, and the multiple groups of locking devices are evenly arranged on the locking block 4 along the circumferential direction. The multiple groups of locking devices are evenly arranged on the locking block 4, which can make the force uniform and prevent the refrigerant leakage caused by uneven force; the locking block 4 is a polygonal structure, and the multiple locking columns 6 are respectively inserted at the angles of the locking block 4, and the number of the locking columns 6 corresponds to the number of sides of the locking block 4.

[0039] Furthermore, a card block 11 is provided in the groove 10, and a card slot 12 is provided on the inner ring of the locking piece 5 to match the card block 11, and the card block 11 can be clamped in the card slot 12; the width of the groove 10 is greater than the thickness of the locking piece 5 and the width of the groove 10 is at least twice the thickness of the locking piece 5. While the locking piece 5 rotates in the groove 10, it can also slide up and down in the groove 10. A card block 11 is provided in the groove 10, and the card block 11 is arranged at the upper part of the groove 10. When the locking piece 5 slides upward, the card block 11 can be clamped in the card slot 12 of the inner ring of the locking piece 5, and the locking piece 5 cannot rotate in the groove 10, so that the upper shell 1 and the lower shell 2 When the upper shell 1 and the lower shell 2 are locked, the locking piece 5 is slid downward in the groove 10, and the locking piece 5 and the block 11 are disengaged from each other. The locking piece 5 can rotate freely at the lower part of the groove 10. The locking piece 5 is rotated to rotate the locking hole 9 to the bottom of the locking column 6, so that the locking column 6 is inserted into the locking hole 9 and the locking piece 5 is inserted into the locking groove 8. The locking nut 7 is rotated to complete the locking and fixation of the upper shell 1 and the lower shell 2.

[0040] Furthermore, there are multiple blocks 11, and the multiple blocks 11 are evenly arranged in the groove 10 along the circumferential direction. There are multiple slots 12, and the number of slots 12 is the same as that of the blocks 11 and the positions are adapted. When the locking piece 5 is located below the block 11 and is locked by the locking column 6, since the block 11 has a blocking effect on the locking piece 5, the uniform arrangement of the multiple blocks 11 can make the locking piece 5 evenly stressed, avoiding local stress that causes the upper shell 1 and the lower shell 2 to be unable to be completely locked and fixed, resulting in leakage.

[0041] like Figure 4 and Figure 5 As shown, in another embodiment, the block 11 can be set to a polygonal structure, and the inner ring of the locking piece 5 is adapted to the shape of the block 11. When the locking piece 5 slides upward so that the locking piece 5 is stuck on the block 11, the locking piece 5 cannot rotate in the groove 10. The polygonal structure enables the locking piece 5 to withstand greater force without damaging the locking piece 5 or the block 11. When the locking piece 5 slides downward to the bottom of the block 11, the locking piece 5 can rotate in the groove 10.

[0042] Furthermore, a sealing groove is provided on the inner ring of the upper shell 1, and a sealing ring 14 is provided in the sealing groove. The sealing ring 14 is made of rubber and is located directly above the lower shell 2. When the upper shell 1 and the lower shell 2 are screwed together, the upper edge of the lower shell 2 abuts against and fits tightly against the sealing ring 14. The sealing ring 14 is deformed by the extrusion force, thereby filling the entire sealing groove, which can prevent the refrigerant from leaking from the sealing groove and the threaded connection.

[0043] like Figure 6 and Figure 7 As shown, the upper shell 1 and lower shell 2 are both integrally molded by injection molding. A base 3 for stabilizing the compressor is provided at the bottom of the lower shell 2. The base 3 and lower shell 2 are integrally molded by injection molding. To enhance the connection between the lower shell 2 and the base 3, ribs 15 are provided between the lower shell 2 and the base 3. To enhance the structural strength of the base 3, a plurality of reinforcing ribs are provided on the bottom surface of the base 3. The present invention utilizes plastic materials to form the upper shell 1, lower shell 2, and base 3, saving material and reducing the weight of the compressor. Furthermore, the integral injection molding process simplifies the manufacturing process and reduces production costs.

[0044] Furthermore, the upper shell 1 and the lower shell 2 are provided with reinforcing ribs 13, which are integrally formed with the upper shell 1 or the lower shell 2 by injection molding during production, and can enhance the pressure resistance of the compressor so that the compressor shell will not be broken or damaged when the refrigerant inside the compressor maintains a high pressure.

[0045] Furthermore, a plurality of support columns 16 are provided inside the lower shell 2 . The support columns 16 are vertically arranged at the bottom of the lower shell 2 . The support columns 16 are made of plastic and are integrally formed with the lower shell 2 by injection molding.

[0046] Furthermore, a support pad 17 is provided at the bottom of the base 3. The support pad 17 is in direct contact with the ground or the external unit, and can play a role in buffering and shock absorption.

[0047] Furthermore, the lower shell 3 is provided with a plurality of pipes, which are used to connect the inner cavity of the compressor with the outside world. The pipes are embedded in the lower shell 3 during the manufacture of the lower shell 3 and do not need to be fixed by welding.

[0048] A compressor includes the above-mentioned compressor plastic shell, wherein a compressor compression device 18 is provided in the compressor plastic shell, and a plurality of springs 19 are provided at the bottom of the compression device. The plurality of springs 19 are respectively mounted on support columns 16 for buffering and shock absorbing the compression device 18.

[0049] The compressor housing in the present invention is made of plastic and is integrally formed by injection molding during the manufacturing process. During the injection molding, the pipes are embedded in the housing without welding. The present invention replaces steel with plastic, which can reduce the weight of the compressor when the compressor is in normal use and reduce production costs. At the same time, the compressor housing made of steel plate needs to be lubricated during the manufacturing process. After stamping, the upper and lower shells need to be welded. At the same time, each pipe may need to be welded and fixed to the housing. Before welding, the housing needs to be cleaned and decontaminated, and a large amount of water and manual cleaning are wasted during cleaning, which wastes manpower and material resources. However, the present invention is made of plastic material and does not require cleaning. The upper and lower shells are threadedly connected before and can be fixed without welding. In order to maintain the connection strength, a locking device is provided between the upper and lower shells to enhance the connection strength between the upper and lower shells. At the same time, in order to prevent leakage, a sealing ring is provided between the upper and lower shells and liquid sealant is applied to the threads of the upper and lower shells to ensure the airtightness between the upper and lower shells and enhance the connection strength between the upper and lower shells. The present invention can reduce the weight by 80% and can also significantly improve the noise level, reducing it from 37dB to 34dB.

[0050] Assembly process: First, place the compression device in the lower shell, set the spring sleeve on the support column, then insert the sealing ring into the sealing groove of the upper shell, and apply liquid sealant on the internal thread of the upper shell, and also apply liquid sealant on the external thread of the lower shell, and connect the upper shell and the lower shell by thread. During the tightening process, since the locking block and the locking plate are both regular polygon structures, which are compatible with the structural size of the wrench, the wrench can be set on the locking block and the locking plate to better apply the tightening force to the upper shell and the lower shell; after the wrench is set on the locking block and the locking plate, slide the locking plate upward in the groove so that the clamping block is clamped in the clamping slot. The locking nut can be tightened to lock the upper and lower shells, thereby preventing the refrigerant from leaking. The connection strength between the upper and lower shells can also be strengthened to prevent the upper and lower shells from separating. The present invention does not require welding, can reduce the welding process flow, and can also reduce the electricity and human resources used for welding, thereby reducing production costs.

[0051] Finally, it should be noted that 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A compressor plastic housing, characterized in that: It comprises an upper shell (1), a lower shell (2) and a base (3), wherein the upper shell (1) and the lower shell (2) are threadedly connected, a locking device is provided between the upper shell (1) and the lower shell (2), and the base (3) is fixedly arranged at the bottom of the lower shell (2) for supporting the outer shell; A locking block (4) is provided on the outer wall of the upper shell (1), and a locking piece (5) is provided on the outer wall of the lower shell (2); The locking device comprises a locking column (6) and a locking nut (7) threadedly connected to the locking column (6); the locking column (6) passes through the locking block (4) and is slidably arranged with the locking block (4); a locking groove (8) is provided at the lower portion of the locking column (6); a locking hole (9) is provided on the locking plate (5); the locking column (6) is inserted into the locking hole (9); the locking plate (5) is clamped in the locking groove (8); and the locking nut (7) is located above the locking block (4); radial cross-sections of the locking block (4) and the locking plate (5) are both regular polygonal structures; A circular groove (10) is provided on the outer wall of the lower shell (2), and the locking piece (5) is rotatably arranged in the groove (10); A clamping block (11) is provided in the groove (10), and a clamping slot (12) adapted to the clamping block (11) is provided on the inner ring of the locking piece (5), and the clamping block (11) can be clamped in the clamping slot (12).

2. A compressor plastic housing according to claim 1, characterized in that: The locking devices are provided in multiple groups, and the multiple groups of locking devices are evenly arranged on the locking block (4) along the circumferential direction.

3. The compressor plastic housing according to claim 1, characterized in that: The upper shell (1) and the lower shell (2) are both integrally formed by injection molding.

4. A compressor plastic housing according to claim 3, characterized in that: Reinforcing ribs (13) are provided on the upper shell (1) and the lower shell (2).

5. A compressor, characterized in that: The utility model comprises the compressor plastic housing according to any one of claims 1-4.

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