Shell of compressor and compressor

Abstract

The shell comprises a low-pressure shell part and a high-pressure shell part, the low-pressure shell part is provided with a low-pressure cavity and a fluid inlet communicated with the low-pressure cavity, the high-pressure shell part is provided with a high-pressure cavity and a fluid outlet communicated with the high-pressure cavity, and the shell further comprises a separation shell part. The low-pressure shell part and the high-pressure shell part are welded to the two side faces of the separation shell part in a sealed mode respectively, or the low-pressure shell part and the high-pressure shell part are welded in a sealed mode, and the separation shell part is welded and fixed to the interior of the low-pressure shell part or the high-pressure shell part. The separation shell part is located between the high-pressure cavity and the low-pressure cavity, and the separation shell part is further provided with a mounting through hole penetrating from one side of the high-pressure cavity to one side of the low-pressure cavity.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, specifically to a compressor housing and a compressor. Background Technology

[0002] With the rapid development of the automotive industry, automotive air conditioning systems have become an indispensable part of modern automobiles. The rotary compressor, as a core component of the automotive air conditioning system, directly affects the efficiency and lifespan of the entire system through its performance and reliability. The main function of the rotary compressor is to compress and transport gas within the cylinder using a rotating rotor, thereby achieving refrigerant circulation and providing a comfortable environment inside the vehicle.

[0003] Existing compressor housings typically use partitions to separate high-pressure and low-pressure zones to prevent mixing of high and low-pressure gases. This design requires fasteners (such as bolts and nuts) to connect the various parts of the housing, and seals (such as O-rings and gaskets) to ensure pressure sealing within the housing. However, this traditional housing design and connection method has the following significant drawbacks: 1. Increased outer diameter: The installation locations of fasteners usually require additional space, leading to an increase in the overall outer diameter of the housing, increasing the compressor's volume and space requirements. This problem is particularly prominent in space-constrained applications such as automobiles. 2. Increased overall weight: The use of fasteners and seals inevitably increases the overall weight of the compressor. For the modern automotive industry, which pursues lightweight design, especially for new energy vehicles, this issue directly affects the vehicle's energy efficiency and driving range. 3. Sealing reliability issues: Over long-term use, seals are prone to aging and wear, leading to a decline in sealing performance and causing leakage of high and low-pressure gases. This not only reduces the compressor's cooling efficiency but may also affect the normal operation of the entire air conditioning system, increasing maintenance costs and frequency.

[0004] Therefore, the existing rotary compressor housing design has obvious shortcomings in terms of lightweight, compactness and sealing reliability, making it difficult to meet the modern automotive industry's requirements for high performance, high reliability and low cost. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the technical problem to be solved by this utility model is to provide a compressor housing and a compressor, which eliminates the need for designing seals and fasteners between the housings, reduces the weight of the whole machine, has a simple structure, and has high sealing reliability.

[0006] To achieve the above objectives, this utility model provides a compressor housing, including a low-pressure housing portion and a high-pressure housing portion. The low-pressure housing portion has a low-pressure chamber and a fluid inlet communicating with the low-pressure chamber. The high-pressure housing portion has a high-pressure chamber and a fluid outlet communicating with the high-pressure chamber. It also includes a partition housing portion. The low-pressure housing portion and the high-pressure housing portion are respectively sealed and welded to both sides of the partition housing portion, or the low-pressure housing portion and the high-pressure housing portion are sealed and welded together and the partition housing portion is welded and fixed inside the low-pressure housing portion or the high-pressure housing portion. The partition housing portion is located between the high-pressure chamber and the low-pressure chamber, and the partition housing portion also has a mounting through hole extending from one side of the high-pressure chamber to the low-pressure side.

[0007] Furthermore, the partition housing is provided with a flow passage connecting the high-pressure chamber and the low-pressure chamber.

[0008] Furthermore, the low-pressure housing, high-pressure housing, and partition housing are made of aluminum alloy.

[0009] Furthermore, the low-pressure housing and the high-pressure housing are respectively sealed and welded to the two sides of the partition housing, and the two sides of the partition housing are provided with a first contact surface, and the low-pressure housing and the high-pressure housing are provided with a second contact surface that is in close contact with the first contact surface.

[0010] Furthermore, the sealing welds between the low-pressure housing portion and the high-pressure housing portion and the partition housing portion are both formed by laser welding, or the sealing welds between the low-pressure housing portion and the high-pressure housing portion are formed by laser welding.

[0011] This utility model also provides a compressor, including a power unit, a pressure boosting unit, and a transmission assembly connecting the power unit and the pressure boosting unit, and also includes the aforementioned housing. The power unit is installed in a low-pressure chamber, and the pressure boosting unit is installed in a high-pressure chamber, which can draw in fluid from the low-pressure chamber and compress and boost its pressure. The transmission assembly passes through a mounting through hole.

[0012] Furthermore, the power unit includes a motor, the booster unit includes a pump body assembly, and the drive assembly includes a shaft connecting the pump body assembly and the motor.

[0013] Furthermore, the pump body assembly includes a cylinder head, and the housing portion is integral with the cylinder head.

[0014] Furthermore, the pump body assembly includes a cylinder head, which is fixed to the partition housing portion of the housing, and the cylinder head is provided with a bushing portion that extends into the mounting through hole, and the rotating shaft is disposed in the bushing portion.

[0015] Furthermore, it also includes a muffler installed in the partition housing portion, the muffler being located in the low-pressure chamber.

[0016] As described above, the housing and compressor involved in this utility model have the following beneficial effects:

[0017] The housing adopts a sealed welding method to stably connect the low-pressure housing section, the high-pressure housing section, and the partition housing section, and ensures the internal and external sealing of the housing at the connection point. Furthermore, the partition housing section can also utilize the cover plate structure in the existing pump body assembly of the compressor, making the two into an integrated structure. Compared with the existing design that uses openings and fasteners for connection and seals for sealing, this method can effectively reduce the weight of the housing and the entire machine. The housing structure design is simple and the sealing reliability is high. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a first embodiment of the rotary compressor of this utility model.

[0019] Figure 2 This is a schematic diagram of the partition housing in Embodiment 1 of the rotary compressor of this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the rotary compressor of this utility model.

[0021] Figure 4 This is a schematic diagram of the partition housing in Embodiment 2 of the rotary compressor of this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of a first embodiment of the rotary compressor of this utility model.

[0023] Explanation of icon numbers

[0024] 1. Low-pressure housing section

[0025] 11 Low-pressure chamber

[0026] 12 Fluid inlet

[0027] 2 High-pressure housing section

[0028] 21 High-pressure chamber

[0029] 22 Fluid outlet

[0030] 3. Separating housing section

[0031] 31 Flow through hole

[0032] 32 Mounting Through Holes

[0033] 4 motors

[0034] 5 Pump body assembly

[0035] 51 Cylinder Head

[0036] 52. Bushing section

[0037] 6-axis

[0038] 7. Muffler Detailed Implementation

[0039] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0040] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0041] See Figures 1 to 5This utility model provides a compressor housing and a compressor including the housing. The housing includes a low-pressure housing part 1 and a high-pressure housing part 2. The low-pressure housing part 1 is provided with a low-pressure chamber 11 and a fluid inlet 12 communicating with the low-pressure chamber 11. The high-pressure housing part 2 is provided with a high-pressure chamber 21 and a high-pressure chamber 21 communicating with the low-pressure chamber 11. The housing also includes a partition housing part 3. The low-pressure housing part 1 and the high-pressure housing part 2 are respectively sealed and welded to the two sides of the partition housing part 3, or the low-pressure housing part 1 and the high-pressure housing part 2 are sealed and welded and the partition housing part 3 is welded and fixed inside the low-pressure housing part 1 or the high-pressure housing part 2. The partition housing part 3 is located between the high-pressure chamber 21 and the low-pressure chamber 11 and plays a separating role. The partition housing part 3 is also provided with a mounting through hole 32 extending from one side of the high-pressure chamber 21 to one side of the low-pressure chamber 11. The high-pressure chamber 21 and the low-pressure chamber 11 remain connected during operation. This connection can be maintained either internally or externally within the housing. For example, a flow through-hole 31 connecting the high-pressure chamber 21 and the low-pressure chamber 11 can be provided on the partition housing 3, or the connection can be maintained externally using a pipe. The compressor also includes a power unit, a booster unit, and a transmission assembly connecting the power unit and the booster unit. The power unit is installed in the low-pressure chamber 11, and the booster unit is installed in the high-pressure chamber 21, specifically on the partition housing 3. It can draw fluid from the low-pressure chamber 11 and compress it. The transmission assembly passes through the mounting through-hole 32. The power unit, booster unit, and transmission assembly can employ existing design structures, with the power unit driving the booster unit via the transmission assembly.

[0042] The main working principle of the housing and compressor of this utility model is as follows: The compressor can be used for compressing gases or other fluids. The housing serves as the mounting support base for other components of the compressor, used for mounting and fixing the power unit, pressure boosting unit, and transmission components, and provides a space to accommodate the compressed fluid. During assembly, the low-pressure housing part 1 and the high-pressure housing part 2 can be sealed and welded to opposite sides of the partition housing part 3 to obtain a stable housing with good sealing effect. The joints are all sealed by weld seams. Alternatively, the low-pressure housing part 1 and the high-pressure housing part 2 can be directly sealed and welded to ensure the airtightness between the inside of the housing and the outside at the weld joint. The partition housing part 3 is welded and fixed inside the low-pressure housing part 1 or the high-pressure housing part 2 to obtain a stable housing with good sealing effect. Compared with the existing method of using fasteners for connection, the connection between the low-pressure housing part 1, the high-pressure housing part 2, and the partition housing part 3 does not require connecting holes, bolts, or other fasteners, nor does it require additional sealing rings or other sealing components. There is no problem of sealing component aging, which can effectively reduce the weight of the housing and the whole machine. The housing structure design is simple, the sealing structure has high reliability, and the service life is long. When the compressor is working, the fluid to be compressed enters the low-pressure chamber 11 through the fluid inlet 12. The power unit drives the pressure boosting unit to work through the transmission assembly. The fluid in the low-pressure chamber 11 is drawn into the high-pressure chamber 21 through the flow through hole 31, pressurizes the fluid in the high-pressure chamber 21 and discharges it through the fluid outlet 22.

[0043] See Figures 1 to 5 The present invention will be further described below with reference to several specific embodiments:

[0044] Example 1:

[0045] See Figure 1 and Figure 2 In this embodiment, the low-pressure housing 1, the high-pressure housing 2, and the partition housing 3 are made of aluminum alloy, which can further reduce the overall weight of the housing and compressor, and ensure structural stability. The partition housing 3 is provided with a flow through hole 31 that connects the high-pressure chamber 21 and the low-pressure chamber 11. When the compressor is working, the fluid in the low-pressure chamber 11 is drawn into the high-pressure chamber 21 through the flow through hole 31.

[0046] In this embodiment, the low-pressure housing part 1 and the high-pressure housing part 2 are respectively sealed and welded to the two sides of the partition housing part 3. Preferably, the two sides of the partition housing part 3 are provided with a first contact surface, and the low-pressure housing part 1 and the high-pressure housing part 2 are provided with a second contact surface that is closely fitted to the first contact surface. Welding is performed at the contact surface. Both the low-pressure housing part 1 and the high-pressure housing part 2 are laser welded to the partition housing part 3 to form a stable weld fixation and good sealing. The surface fit can further ensure the sealing performance.

[0047] The housing of this application can be used in various compressors, especially rotary compressors. In this embodiment, the power unit of the compressor includes a motor 4, the pressure boosting unit includes a pump body assembly 5, and the transmission assembly includes a rotating shaft 6 connecting the pump body assembly 5 and the motor 4. The motor 4 drives the pump body assembly 5 to rotate via the rotating shaft 6 to perform fluid compression and pressure boosting. The pump body assembly 5 can adopt an existing structure, generally featuring a cylinder head 51, which is fixedly connected to the partition housing 3 to achieve stable installation of the pump body assembly 5 within the housing. The cylinder head 51 has a bushing portion 52 that inserts into a mounting through hole 32 in the partition housing 3. The rotating shaft 6 is disposed within the bushing portion 52, and the bushing portion 52 and the mounting through hole 32 can be clearance-fitted. In other embodiments, the power unit, pressure boosting unit, and transmission assembly can also employ other suitable existing structures.

[0048] Example 2:

[0049] See Figure 3 and Figure 4 In this embodiment, the main structure of the housing and compressor is the same as that in Embodiment 1. The difference is that the cylinder head 51 of the pump body assembly 5 is larger in this embodiment, and the partition housing part 3 of the housing can directly utilize the cylinder head 51. That is, the partition housing part 3 and the cylinder head 51 are integrated. The low-pressure housing part 1 and the high-pressure housing part 2 are directly welded to the two sides of the cylinder head 51 for sealing welding, and the cylinder head 51 also serves as the partition housing part 3. This method simplifies the structural components and further reduces the overall weight of the machine. In addition, in this embodiment, a bushing part 52 is also provided on the side of the cylinder head 51 (partition housing part 3) facing the low-pressure chamber 11. The compressor also includes a muffler 7, which is fitted onto the bushing part 52 and fixed in place to reduce noise. The other parts in this embodiment are the same as those in Embodiment 1 and will not be described in detail.

[0050] Example 3:

[0051] See Figure 5 In this embodiment, the structure of the housing and compressor is the same as that in Embodiment 1. The difference is that the low-pressure housing part 1 and the high-pressure housing part 2 are directly sealed and welded, and the contact area between the two is a surface-to-surface contact, ensuring stable welding and sealing. Preferably, the low-pressure housing part 1 and the high-pressure housing part 2 are laser welded together to form a stable weld and good seal. The partition housing part 3 is welded and fixed in the low-pressure housing part 1, and the weld is also sealed. Of course, the partition housing part 3 can also be welded and fixed in the high-pressure housing part 2. The other parts in this embodiment are the same as those in Embodiment 1 and will not be described in detail.

[0052] As can be seen from the above, the housing and compressor of this utility model have the following beneficial effects:

[0053] The housing adopts a sealed welding method to stably connect the low-pressure housing part 1, the high-pressure housing part 2, and the partition housing part 3, and ensure the internal and external sealing of the housing at the connection. Furthermore, the partition housing part 3 can also utilize the cover plate structure in the existing pump body assembly 5 of the compressor, making the two into an integrated structure. Compared with the existing design that uses openings and fasteners for connection and seals for sealing, this method can effectively reduce the weight of the housing and the whole machine. The housing structure design is simple and the sealing reliability is high.

[0054] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0055] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A casing of a compressor comprising a low-pressure casing portion (1) provided with a low-pressure chamber (11) and a fluid inlet (12) communicating with the low-pressure chamber (11), and a high-pressure casing portion (2) provided with a high-pressure chamber (21) and a fluid outlet (22) communicating with the high-pressure chamber (21), characterized in that: The low-pressure shell part (1) and the high-pressure shell part (2) are respectively sealed and welded with two side surfaces of the partition shell part (3), or the low-pressure shell part (1) and the high-pressure shell part (2) are sealed and welded and the partition shell part (3) is welded and fixed inside the low-pressure shell part (1) or the high-pressure shell part (2); the partition shell part (3) is located between the high-pressure cavity (21) and the low-pressure cavity (11), and the partition shell part (3) is further provided with a mounting through hole (32) penetrating from one side of the high-pressure cavity (21) to one side of the low-pressure cavity (11).

2. The compressor housing of claim 1, wherein: The partition shell part (3) is provided with a flow through hole (31) communicating the high-pressure cavity (21) and the low-pressure cavity (11).

3. The compressor housing of claim 1, wherein: The low-pressure shell part (1), the high-pressure shell part (2) and the partition shell part (3) are made of aluminum alloy.

4. The compressor housing of claim 1, wherein: The low-pressure shell part (1) and the high-pressure shell part (2) are respectively sealed and welded with two side surfaces of the partition shell part (3), and both of the two side surfaces of the partition shell part (3) are provided with a first contact surface, and both of the low-pressure shell part (1) and the high-pressure shell part (2) are provided with a second contact surface closely adhering to the first contact surface.

5. The compressor housing of claim 1, wherein: The sealed welding between the low-pressure shell part (1) and the high-pressure shell part (2) and the partition shell part (3) is formed by laser welding, or the sealed welding between the low-pressure shell part (1) and the high-pressure shell part (2) is formed by laser welding.

6. A compressor comprising a power section, a boost section, and a drive assembly connecting the power section and the boost section, characterized by: The compressor shell as claimed in any one of claims 1 to 5 is further provided with a power part installed in the low-pressure cavity (11), a pressure boosting part installed in the high-pressure cavity (21) capable of pumping and compressing fluid in the low-pressure cavity (11) to boost pressure, and a transmission assembly penetrating through the mounting through hole (32).

7. The compressor of claim 6, wherein: The power part comprises a motor (4), the pressure boosting part comprises a pump body assembly (5), and the transmission assembly comprises a rotating shaft (6) connecting the pump body assembly (5) and the motor (4).

8. The compressor of claim 7, wherein: The pump body assembly (5) comprises a cylinder cover (51), and the partition shell part (3) of the shell is integrated with the cylinder cover (51).

9. The compressor of claim 8, wherein: The pump body assembly (5) comprises a cylinder cover (51), the cylinder cover (51) is fixed on the partition shell part (3) of the shell, and the cylinder cover (51) is provided with a shaft sleeve part (52) extending into the mounting through hole (32), and the rotating shaft (6) is arranged in the shaft sleeve part (52).

10. The compressor of claim 9, wherein: The shell is further provided with a silencer (7) installed on the partition shell part (3), and the silencer (7) is located in the low-pressure cavity (11).

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