Outer cover structure of compressor shell
By using the container chamber as a buffer chamber in the compressor housing structure, the gas flow rate and noise are reduced, and heat dissipation is improved through heat exchange, the problem of insufficient noise and heat dissipation in the prior art is solved, and the design is simplified and welding defects are avoided.
Patent Information
- Application Number
- CN202420782199.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-16
AI Technical Summary
The noise generated by existing compressors during the suction and exhaust process is difficult to effectively reduce, and the internal silence chamber design is complex and increases the difficulty of manufacturing, and the heat dissipation is poor, so additional cooling fan is often needed.
Design a compressor housing structure, using the container cavity between the outer cover and the upper cover as an exhaust or suction buffer chamber, reduces the gas flow rate to reduce noise, improves heat dissipation ability through heat exchange, and passes through positioning ring barrier welding Seams prevent welding defects.
Without changing the compressor size, reduce noise and improve heat dissipation capabilities, simplify design and manufacturing, avoid welding defects, and achieve good sealing and heat dissipation effects.
Smart Images
Figure CN222276890U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of compressor noise reduction, in particular to a compressor housing outer cover structure. Background Art
[0002] As the core component of refrigerator refrigeration, the compressor needs to perform continuous intake and exhaust cycles during operation. During this process, the rapid flow of gas and pressure changes are often accompanied by the generation of noise. Especially during the exhaust process, the high-pressure gas discharged from the exhaust pipe is in a pulsed form, which can easily produce frequency resonance with the refrigerator pipe, further increasing the noise.
[0003] At present, in order to reduce the noise generated by the compressor during the suction and exhaust processes, the industry generally adopts the method of designing an independent exhaust silencer chamber inside the compressor casing. This silencer chamber is usually designed with a special structure to slow down the gas flow speed and absorb or reflect noise sound waves, thereby achieving the effect of noise reduction.
[0004] However, this silencer cavity located inside the compressor housing often has some limitations. Since the volume of the silencer cavity is limited by the compressor housing, its noise reduction effect is often limited. To ensure the noise reduction effect of the silencer cavity, it is necessary to design a complex internal structure in a smaller silencer cavity, which will increase the manufacturing difficulty of the compressor. Secondly, the silencer cavity will occupy the space inside the compressor housing, further increasing the difficulty of designing and manufacturing the compressor.
[0005] In addition, during the operation of the compressor, the high-speed operation of its internal mechanical parts and the compression and discharge of the gas will generate a large amount of heat. The upper cover of the compressor often becomes an area where heat is concentrated. In the prior art, the cooling method for the upper cover of the compressor usually adopts natural convection. When the heat generated by the compressor is large, an additional cooling fan is required to assist in cooling. Summary of the invention
[0006] The purpose of the utility model is to provide a compressor housing outer cover structure in view of the problems existing in the prior art.
[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0008] A compressor housing outer cover structure comprises a compressor housing and an outer cover, wherein the compressor housing comprises an upper cover and a lower shell, the upper cover is located between the outer cover and the lower shell, the outer cover is buckled on the upper cover, a cavity is provided between the outer cover and the upper cover, the upper cover is buckled on the lower shell, a positioning ring is provided on the outer side of the upper cover, the positioning ring is arranged around the upper cover and the lower shell, the bottom of the outer cover contacts the top of the positioning ring, a first air pipe and a second air pipe are respectively provided on the outer cover and the lower shell, the cavity is communicated with the outside through the first air pipe, and the cavity and the lower shell are connected through a third air pipe.
[0009] The utility model has a reasonable structure and is easy to modify the existing compressor design. The weld between the outer cover and the upper cover and the weld between the upper cover and the lower shell are separated by the positioning ring, so as to avoid the generation of a new heat-affected zone at the original weld during re-welding, resulting in defects such as pores and slag inclusions in the original weld, thereby destroying the original welding sealing.
[0010] Preferably, a compressor movement is provided in the lower shell, the second air pipe is connected to the air intake pipeline of the compressor movement, and the air exhaust pipeline of the compressor movement is connected to the cavity through the third air pipe.
[0011] The cavity between the outer cover and the upper cover is used as an exhaust buffer cavity of the compressor, and the noise is reduced by alleviating the exhaust pulse. The exhaust gas flow passes through the upper cover of the compressor and performs heat exchange with the upper cover of the compressor, thereby improving the heat dissipation capacity of the compressor casing without adding other heat dissipation devices.
[0012] Preferably, a compressor movement is provided in the lower shell, the second air pipe is connected to the exhaust pipeline of the compressor movement, and the intake pipeline of the compressor movement is connected to the volume cavity through the third air pipe.
[0013] The cavity between the outer cover and the upper cover is used as an air intake buffer cavity of the compressor to reduce the gas flow rate to reduce noise, and the air intake flow passes through the upper cover of the compressor to perform heat exchange with the upper cover of the compressor, thereby improving the heat dissipation capacity of the compressor casing without adding other heat dissipation devices.
[0014] Preferably, the projection of the outer cover on the horizontal plane coincides with the projection of the upper cover on the horizontal plane, the top of the outer cover is a plane, and the distance between the highest point of the upper cover and the top of the cavity is not less than one quarter of the height of the upper cover.
[0015] The outer cover fits the design of the compressor housing, and the top of the outer cover is flat, which will not occupy too much installation space in the refrigerator and will not affect the installation of the compressor in the refrigerator. By limiting the distance between the top of the cavity and the upper cover, it is ensured that the cavity has sufficient volume to serve as an intake buffer cavity or an exhaust buffer cavity.
[0016] Preferably, the thickness of the outer cover is not greater than the width of the positioning ring, and the width of the positioning ring is not less than the thickness of the upper cover.
[0017] By limiting the thickness of the outer cover, the width of the positioning ring and the thickness of the upper cover, it is ensured that when the outer cover and the upper cover are welded, the positioning ring can effectively block the weld between the outer cover and the upper cover and the weld between the upper cover and the lower shell.
[0018] Preferably, the inner wall of the outer cover contacts the outer surface of the upper cover, and the contact area between the inner wall and the upper cover is not less than one sixth of the total surface area of the inner wall.
[0019] By limiting the contact area between the outer cover and the upper cover, it is ensured that the outer cover and the upper cover have good sealing after welding, and it is prevented that gas leaks from the gap between the outer cover and the upper cover to generate additional noise.
[0020] Compared with the prior art, the beneficial effects of the utility model are:
[0021] (1) The utility model utilizes the volume cavity between the outer cover and the upper cover as the exhaust buffer cavity or the intake buffer cavity of the compressor without significantly changing the size and shape of the compressor housing, thereby reducing noise by reducing the gas flow rate, and allowing the intake or exhaust gas flow to pass through the upper cover of the compressor to perform heat exchange with the upper cover of the compressor, thereby improving the heat dissipation capacity of the compressor housing without adding other heat dissipation devices.
[0022] (2) The utility model has a reasonable structure and is easy to modify the existing compressor design. At the same time, the outer cover fits the compressor shell design and does not affect the installation of the compressor in the refrigerator.
[0023] (3) Compared with the existing compressor housing in which the bottom of the upper cover is enclosed in the lower shell, the top of the lower shell in the utility model is enclosed in the upper cover, and the weld between the outer cover and the upper cover and the weld between the upper cover and the lower shell are separated by a positioning ring to prevent the re-welding from generating a new heat-affected zone at the original weld, resulting in defects such as pores and slag inclusions in the original weld, thereby destroying the original welding sealing. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;
[0025] Figure 2 It is a structural cutaway diagram of the first embodiment of the present utility model;
[0026] Figure 3 This is a schematic diagram of the structure of the compressor housing in the first embodiment of the utility model;
[0027] Figure 4 This is a schematic diagram of the structure of the second embodiment of the present utility model;
[0028] In the figure: 1. upper cover; 2. lower shell; 3. outer cover; 4. cavity; 5. positioning ring; 6. first air pipe; 7. second air pipe; 8. third air pipe; 9. process pipe. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "middle", "upper", "lower", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0031] like Figures 1 to 3 As shown, the specific scheme of embodiment 1 is as follows: the compressor in this embodiment belongs to a refrigerator compressor, and a machine foot is provided at the bottom of the existing compressor housing, and the compressor is fixed to the bottom plate of the refrigerator through the machine foot. The compressor housing often includes a lower shell 2, an upper cover 1, a process pipe 9 for filling refrigerant, an intake pipe connected to the refrigerator return pipe, and an exhaust pipe connected to the refrigerator exhaust pipe. The compressor sucks the refrigerant gas into the compressor piston cylinder hole through the intake pipe, and then compresses it into high-pressure gas and discharges it from the exhaust pipe, and then performs a refrigeration cycle through the refrigerator refrigeration system.
[0032] A compressor housing cover structure includes a compressor housing and an outer cover 3, the compressor housing includes an upper cover 1 and a lower shell 2, the upper cover 1 is located between the outer cover 3 and the lower shell 2, the outer cover 3 is buckled on the upper cover 1, a cavity 4 is provided between the outer cover 3 and the upper cover 1, the upper cover 1 is buckled on the lower shell 2, a positioning ring 5 is provided on the outer side of the upper cover 1, the positioning ring 5 is arranged around the upper cover 1 and the lower shell 2, the bottom of the outer cover 3 is in contact with the top of the positioning ring 5, compared with the bottom of the upper cover 1 in the existing compressor housing being wrapped in the lower shell 2, the top of the lower shell 2 in this embodiment is wrapped in the upper cover 1, and it is easier to achieve a completely sealed weld.
[0033] The bottom of the outer cover 3 is welded to the positioning ring 5 of the upper cover 1 by means of girth welding, and the top of the lower shell 2 is welded to the positioning ring 5 of the upper cover 1 by means of girth welding. During the two welding processes, the weld between the outer cover 3 and the upper cover 1 and the weld between the upper cover 1 and the lower shell 2 are blocked by the positioning ring 5 to avoid the generation of new heat-affected zones at the original welds by welding again, resulting in defects such as pores and slag inclusions in the original welds, thereby destroying the original welding sealing.
[0034] The outer cover 3 and the lower shell 2 are provided with a first air pipe 6 and a second air pipe 7 respectively. The cavity 4 is connected with the outside through the first air pipe 6 , and the cavity 4 and the lower shell 2 are connected through a third air pipe 8 .
[0035] A compressor movement is provided in the lower shell 2 . The second air pipe 7 is the air intake pipe of the compressor. The second air pipe 7 is connected to the air intake pipeline of the compressor movement. The exhaust pipeline of the compressor movement is connected to the cavity 4 through the third air pipe 8 .
[0036] When the compressor is working, the compressor sucks the refrigerant gas into the compressor movement through the second air pipe 7, and the high-pressure gas generated by the compressor movement is discharged into the cavity 4 from the third air pipe 8. The cavity 4 is used as an exhaust buffer cavity to reduce noise by alleviating the exhaust pulse. Finally, the high-pressure gas is discharged from the cavity 4 from the first air pipe 6 and returns to the refrigerator refrigeration system for refrigeration cycle. In this process, the high-pressure gas passes through the upper cover 1 of the compressor and exchanges heat with the upper cover 1 of the compressor to improve the heat dissipation capacity of the compressor housing.
[0037] The projection of the outer cover 3 on the horizontal plane coincides with the projection of the upper cover 1 on the horizontal plane, so as to prevent the side of the outer cover 3 from protruding from the compressor housing. The top of the outer cover 3 is a plane, which does not affect the installation of the compressor in the refrigerator. The distance between the highest point of the upper cover 1 and the top of the cavity 4 is one quarter of the height of the upper cover 1, so as to ensure that the cavity 4 has sufficient volume as an exhaust buffer chamber.
[0038] The thickness of the outer cover 3 is consistent with the width of the positioning ring 5, and the width of the positioning ring 5 is not less than the thickness of the upper cover 1, ensuring that the positioning ring 5 can effectively block the weld between the outer cover 3 and the upper cover 1 and the weld between the upper cover 1 and the lower shell 2.
[0039] The inner wall of the outer cover 3 contacts the outer surface of the upper cover 1 , and the contact area between the inner wall and the upper cover 1 is not less than one sixth of the total surface area of the inner wall, ensuring good sealing between the outer cover 3 and the upper cover 1 after welding.
[0040] Embodiment 2: Figure 4 As shown, the difference between the second embodiment and the first embodiment is that:
[0041] A compressor movement is arranged in the lower shell 2 . The second air pipe 7 is the exhaust pipe of the compressor. The second air pipe 7 is connected to the exhaust pipeline of the compressor movement. The intake pipeline of the compressor movement is connected to the volume cavity 4 through the third air pipe 8 .
[0042] When the compressor is working, the compressor sucks the refrigerant gas into the cavity 4 through the first air pipe 6. The cavity 4 is used as an air suction buffer cavity to reduce noise by reducing the gas flow rate. The refrigerant gas in the cavity 4 is sucked into the compressor movement from the third air pipe 8. In this process, the refrigerant gas passes through the upper cover 1 of the compressor and exchanges heat with the upper cover 1 of the compressor to improve the heat dissipation capacity of the compressor housing. The high-pressure gas generated by the compressor movement is discharged from the compressor from the second air pipe 7 and returns to the refrigerator refrigeration system for refrigeration cycle.
[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A compressor housing cover structure, comprising a compressor housing and a cover, characterized in that: The compressor housing includes an upper cover and a lower shell, the upper cover is located between the outer cover and the lower shell, the outer cover is buckled on the upper cover, a cavity is provided between the outer cover and the upper cover, the upper cover is buckled on the lower shell, a positioning ring is provided on the outer side of the upper cover, the positioning ring is arranged around the upper cover and the lower shell, the bottom of the outer cover contacts the top of the positioning ring, a first air pipe and a second air pipe are respectively provided on the outer cover and the lower shell, the cavity is communicated with the outside through the first air pipe, and the cavity and the lower shell are connected through a third air pipe.
2. A compressor housing cover structure according to claim 1, characterized in that: A compressor core is arranged in the lower shell, the second air pipe is communicated with the air intake pipeline of the compressor core, and the air exhaust pipeline of the compressor core is communicated with the volume cavity through the third air pipe.
3. A compressor housing cover structure according to claim 1, characterized in that: A compressor core is arranged in the lower shell, the second air pipe is communicated with the exhaust pipeline of the compressor core, and the intake pipeline of the compressor core is communicated with the volume cavity through the third air pipe.
4. A compressor housing cover structure according to claim 1, characterized in that: The projection of the outer cover on the horizontal plane coincides with the projection of the upper cover on the horizontal plane, the top of the outer cover is a plane, and the distance between the highest point of the upper cover and the top of the cavity is not less than one quarter of the height of the upper cover.
5. A compressor housing cover structure according to claim 1, characterized in that: The thickness of the outer cover is not greater than the width of the positioning ring, and the width of the positioning ring is not less than the thickness of the upper cover.
6. A compressor housing cover structure according to claim 1, characterized in that: The inner wall of the outer cover contacts the outer surface of the upper cover, and the contact area between the inner wall and the upper cover is not less than one sixth of the total surface area of the inner wall.