CN210949135U - Compressor and shell thereof - Google Patents
Compressor and shell thereof Download PDFInfo
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- CN210949135U CN210949135U CN201921129271.1U CN201921129271U CN210949135U CN 210949135 U CN210949135 U CN 210949135U CN 201921129271 U CN201921129271 U CN 201921129271U CN 210949135 U CN210949135 U CN 210949135U
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Abstract
The utility model discloses a compressor and casing thereof, the compressor includes: the shell comprises a first section of shell and a second section of shell which are coaxially connected, and the inner diameter of the first section of shell is D1The inner diameter of the second section of shell is D2And satisfy D1>D2(ii) a The total length of the shell is L1The length of the first section of the shell is L2And satisfy L2/L1>25 percent; an accumulator to store a refrigerant; the motor comprises a stator and a rotor, and the stator is in interference fit with the first section of shell so that the motor is fixed on the inner wall of the first section of shell; a pump body fixed in the second section of the shellThe wall is communicated with the liquid reservoir through an air inlet pipe; and one end of the driving shaft is connected to the rotor of the motor, and the other end of the driving shaft is connected to the pump body. The utility model discloses can make the external diameter of the motor and the pump body not have inevitable contact and restraint in the design, avoid the motor landing.
Description
Technical Field
The utility model relates to a refrigeration plant field especially relates to a compressor and casing thereof.
Background
At present, the shell of the refrigeration rotary compressor is used as a pressure container and has the function of fixing a motor stator and a pump body. The shell is usually made of low-carbon steel plate, and can be formed into a cylinder body in the modes of plate rolling welding, tube drawing or stretching and the like. The compressor motor stator and the shell are fixed in an interference fit mode, namely the outer diameter of the stator is slightly larger than the inner diameter of the shell, and the stator is fixed on the shell through interference fit extrusion force. Because the interference magnitude can have certain fluctuation in control, when the interference magnitude is small, the compressor stator cannot be effectively fixed, and the requirement of a drop test cannot be met; if the interference is too large, the stator core will be deformed, resulting in poor clearance between the stator and the rotor of the compressor, generating noise and degrading the performance of the compressor.
Because the compressor motor stator and the pump body are fixed by the shell, the outer diameter of the compressor motor stator and the outer diameter of the pump body are basically the same. When the compressor is designed and selected, the outer diameter of the motor stator and the outer diameter of the compressor pump body are both limited.
Further, because the motor stator can be ensured to be coaxial with the shell only through a complex mounting process during mounting, if the motor stator is not firmly mounted, a large falling risk is also caused. Therefore, a new housing structure needs to be provided based on the existing machining process to solve the above-mentioned disadvantages.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the not enough among the above-mentioned prior art, provide a compressor and casing thereof, can make the external diameter of the motor and the pump body not have inevitable contact and restraint in the design, avoid the motor landing.
According to an aspect of the present invention, there is provided a compressor, comprising:
the shell comprises a first section of shell and a second section of shell which are coaxially connected, and the inner diameter of the first section of shell is D1The inner diameter of the second section of shell is D2And satisfy D1>D2(ii) a The total length of the shell is L1The length of the first section of the shell is L2And satisfy L2/L1>25％；
An accumulator to store a refrigerant;
the motor comprises a stator and a rotor, and the stator is in interference fit with the first section of shell so that the motor is fixed on the inner wall of the first section of shell;
the pump body is fixed on the inner wall of the second section of shell and is communicated with the liquid reservoir through an air inlet pipe; and
and one end of the driving shaft is connected to the rotor of the motor, and the other end of the driving shaft is connected to the pump body.
The utility model discloses an in the embodiment, first section casing and second section casing integrated into one piece, just form an annular location step between first section casing and the second section casing, the bottom of stator is located on the location step.
In an embodiment of the present invention, the pump body includes a cylinder body, a piston, an upper cylinder cover and a lower cylinder cover; the piston is rotatably arranged in the cylinder body, and the upper cylinder cover and the lower cylinder cover are respectively packaged at the two axial ends of the cylinder body; the upper cylinder cover is coaxially fixed on the inner wall of the second section of the shell.
In an embodiment of the present invention, the upper cylinder cover is in interference fit with the second section housing.
In an embodiment of the present invention, the upper cylinder head is welded to an inner wall of the second casing.
In an embodiment of the present invention, the upper cylinder cover and the second section shell are integrally formed.
The utility model discloses an in an embodiment, the compressor still includes upper cover and lower cover, upper cover coaxial coupling in deviating from of first section casing the one end of second section casing, lower cover coaxial coupling in deviating from of second section casing the one end of first section casing.
In an embodiment of the present invention, the upper shell cover is provided with an exhaust hole, and the exhaust hole is connected with an exhaust pipe.
According to the utility modelIn another aspect of the present invention, a casing for a compressor is provided, where the casing includes a first casing section and a second casing section that are coaxially connected, and the first casing section and the second casing section are respectively and fixedly connected to a motor and a pump body of the compressor; the inner diameter of the first section of shell is D1The inner diameter of the second section of shell is D2And satisfy D1>D2(ii) a The total length of the shell is L1The length of the first section of the shell is L2And satisfy L2/L1>25％。
Furthermore, the first section of shell and the second section of shell are integrally formed, an annular positioning step is formed between the first section of shell and the second section of shell, and the bottom of the stator is positioned on the positioning step.
The utility model discloses a casing 1 for compressor includes first section casing 11 and second section casing 12. The inner cavity of the first section of shell is in interference fit with the motor, and the inner cavity of the second section of shell is matched with the pump body. Therefore, the outer diameters of the motor and the pump body are not necessarily connected and constrained in design, the diameter difference between the motor and the pump body can be increased, the stack height of the motor can be reduced, and abnormal starting noise caused by overhigh stack height of the motor is avoided. Meanwhile, the inner diameter of the second section of shell is smaller than that of the first section of shell, so that the problem that the requirement of a drop test cannot be met due to the fact that interference magnitude between the motor and the shell is small can be effectively solved, and the motor is prevented from slipping off. The utility model provides a casing for compressor can be accomplished through the technology that local internal diameter expands accurately on the basis of current casing, simple process, and the processing cost is lower, convenient to popularize and use. The shell can fundamentally prevent the motor from displacing in a drop test, can effectively reduce the interference magnitude of the motor and the shell, and provides possibility for improving the performance of the motor and the compressor.
In conclusion, the utility model discloses can make the external diameter of motor and pump body not have inevitable relation and restraint in the design, avoid the motor landing.
Drawings
Other features, objects and advantages of the invention will become more apparent from a reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a compressor according to an embodiment of the present invention. And
fig. 2 is a schematic structural view of a shell of the compressor shown in fig. 1.
Reference numerals
1 casing
11 first stage housing
12 second stage shell
13 positioning step
2 liquid reservoir
3 electric machine
31 rotor
32 stator
4 Pump body
41 Cylinder body
42 piston
43 Upper cylinder cover
44 lower cylinder cover
5 drive shaft
6 Upper shell cover
7 lower casing cover
8 air inlet pipe
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
Fig. 1 is a schematic structural diagram of a compressor 1 according to an embodiment of the present invention. And figure 2 is a schematic structural view of the shell 1 of the compressor shown in figure 1.
As shown in fig. 1, according to an aspect of the present invention, the present embodiment provides a compressor, including: casing 1, reservoir 2, motor 3, pump body 4 and drive shaft 5. The shell 1 comprises a first section shell 11 and a second section shell 12 which are coaxially connected, wherein the inner diameter of the first section shell 11 is D1The inner diameter of the second section of the shell 12 is D2And satisfy D1>D2(ii) a The total length of the housing 1 is L1The length of the first section of the shell 11 is L2And satisfy L2/L1>25 percent; the accumulator 2 is used for storing refrigerant; the motor comprises a stator 32 and a rotor 31, wherein the stator 32 is in interference fit with the first section of shell 11 so that the motor 3 is fixed on the inner wall of the first section of shell 11; the pump body 4 is fixed on the inner wall of the second section shell 12 and is communicated with the liquid reservoir 2 through an air inlet pipe 8; the drive shaft 5 has one end connected to the rotor 31 of the motor 3 and the other end connected to the pump body 4.
The utility model discloses a casing 1 for compressor includes first section casing 11 and second section casing 12. The inner cavity of the first section of shell is in interference fit with the motor, and the inner cavity of the second section of shell is matched with the pump body. Therefore, the outer diameters of the motor and the pump body are not necessarily connected and constrained in design, the diameter difference between the motor 3 and the pump body 4 can be increased, the stack height of the motor 3 can be reduced, and abnormal starting sound caused by the stack height of the motor 3 is avoided. Meanwhile, the inner diameter of the second section of shell 12 is smaller than that of the first section of shell 11, so that the problem that the requirement of a drop test cannot be met due to the small interference magnitude between the motor 3 and the shell 1 can be effectively solved, and the motor is prevented from slipping. The utility model provides a casing 1 for compressor can be accomplished through the technology that local internal diameter expands accurately on the basis of current casing, simple process, and the processing cost is lower, convenient to popularize and use. The shell can fundamentally prevent the motor 3 from displacing in a drop test, can effectively reduce the interference magnitude of the motor 3 and the shell, and provides possibility for improving the performance of the motor 3 and the compressor.
Optionally, the first casing segment 11 and the second casing segment 12 are integrally formed, an annular positioning step 13 is formed between the first casing segment and the second casing segment, and the bottom of the stator is located on the positioning step 13. Therefore, the rigidity and stability of the shell 1 can be ensured, the process flow is simplified, and the cost is saved. Further, as known to those skilled in the art, the stator of the electric machine generally includes a stator core and a coil winding, and the stator core is generally formed by stacking a plurality of stator laminations. Therefore, in the utility model discloses in, the stator punching that is located the stator bottom in fact is located on the location step. Therefore, the motor can be positioned by the positioning step 13 in the assembling process, and the motor can be supported after the motor is installed, so that the motor is prevented from sliding downwards. That is, the location step can provide the location support for the motor to avoid the motor because the installation is insecure and the landing.
In the present embodiment, the pump body 4 includes a cylinder 41, a piston 42, an upper cylinder head 43, and a lower cylinder head 44; the piston 42 is rotatably arranged in the cylinder body 41, and the upper cylinder cover 43 and the lower cylinder cover 44 are respectively packaged at two axial ends of the cylinder body 41; the upper cylinder head 43 is coaxially fixed to the inner wall of the second section housing 12. Optionally, the upper cylinder head 43 is in interference fit with the second section housing 12. Further, the upper cylinder cover 43 is welded to the inner wall of the second stage casing 12. Alternatively, the upper cylinder head 43 is integrally formed with the second stage casing 12. Generally, it is necessary to ensure the coaxiality of the cylinder block 41 and the second-stage shell 12 during the assembly process to improve the stability of the compressor operation.
Further, the compressor further comprises an upper shell cover 6 and a lower shell cover 7, wherein the upper shell cover 6 is coaxially connected to one end of the first section of shell 11, which is far away from the second section of shell 12, and the lower shell cover 7 is coaxially connected to one end of the second section of shell 12, which is far away from the first section of shell 11. Optionally, the upper shell cover 6 is provided with an exhaust hole, and an exhaust pipe is connected to the exhaust hole. In this embodiment, the compressor adopts an upper exhaust mode.
The utility model discloses a casing 1 for compressor includes first section casing 11 and second section casing 12. The inner cavity of the first section of shell is in interference fit with the motor, and the inner cavity of the second section of shell is matched with the pump body. Therefore, the outer diameters of the motor and the pump body are not necessarily connected and constrained in design, the diameter difference between the motor 3 and the pump body 4 can be increased, the stack height of the motor 3 can be reduced, and abnormal starting sound caused by the stack height of the motor 3 is avoided. Meanwhile, the inner diameter of the second section of shell 12 is smaller than that of the first section of shell 11, so that the problem that the requirement of a drop test cannot be met due to the small interference magnitude between the motor 3 and the shell 1 can be effectively solved, and the motor is prevented from slipping. Compressor casing 1 can be accomplished through the technology that local internal diameter expands accurately on the basis of current casing, simple process, the processing cost is lower, convenient to popularize and use. The shell can fundamentally prevent the motor 3 from displacing in a drop test, can effectively reduce the interference magnitude of the motor 3 and the shell, and provides possibility for improving the performance of the motor 3 and the compressor.
As shown in fig. 2, according to another aspect of the present invention, the present embodiment provides a casing 1 for a compressor, the casing 1 includes a first section casing 11 and a second section casing 12 which are coaxially connected, the first section casing 11 and the second section casing 12 are fixedly connected to a motor 3 and a pump body 4 of the compressor respectively; the first section of the shell 11 has an inner diameter D1The inner diameter of the second section of the shell 12 is D2And satisfy D1>D2(ii) a The total length of the housing 1 is L1The length of the first section of the shell 11 is L2And satisfy L2/L1>25％。
Further, the first section of shell 11 and the second section of shell 12 are integrally formed, an annular positioning step 13 is formed between the first section of shell and the second section of shell, and the bottom of the stator is located on the positioning step 13. Therefore, the rigidity and stability of the shell 1 can be ensured, the process flow is simplified, and the cost is saved. Further, as known to those skilled in the art, the stator of the electric machine generally includes a stator core and a coil winding, and the stator core is generally formed by stacking a plurality of stator laminations. Therefore, in the utility model discloses in, the stator punching that is located the stator bottom in fact is located on the location step. Therefore, the motor can be positioned by the positioning step 13 in the assembling process, and the motor can be supported after the motor is installed, so that the motor is prevented from sliding downwards. That is, the location step can provide the location support for the motor to avoid the motor because the installation is insecure and the landing.
In summary, the casing 1 for the compressor of the present invention includes a first-stage casing 11 and a second-stage casing 12. The inner cavity of the first section of shell is in interference fit with the motor, and the inner cavity of the second section of shell is matched with the pump body. Therefore, the outer diameters of the motor and the pump body are not necessarily connected and constrained in design, the diameter difference between the motor 3 and the pump body 4 can be increased, the stack height of the motor 3 can be reduced, and abnormal starting sound caused by the stack height of the motor 3 is avoided. Meanwhile, the inner diameter of the second section of shell 12 is smaller than that of the first section of shell 11, so that the problem that the requirement of a drop test cannot be met due to the small interference magnitude between the motor 3 and the shell 1 can be effectively solved, and the motor is prevented from slipping. Compressor casing 1 can be accomplished through the technology that local internal diameter expands accurately on the basis of current casing, simple process, the processing cost is lower, convenient to popularize and use. The shell can fundamentally prevent the motor 3 from displacing in a drop test, can effectively reduce the interference magnitude of the motor 3 and the shell, and provides possibility for improving the performance of the motor 3 and the compressor.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (10)
1. A compressor, comprising:
the shell comprises a first section of shell and a second section of shell which are coaxially connected, and the inner diameter of the first section of shell is D1The inner diameter of the second section of shell is D2And satisfy D1>D2(ii) a The total length of the shell is L1The length of the first section of the shell is L2And satisfy L2/L1>25％；
An accumulator to store a refrigerant;
the motor comprises a stator and a rotor, and the stator is in interference fit with the first section of shell so that the motor is fixed on the inner wall of the first section of shell;
the pump body is fixed on the inner wall of the second section of shell and is communicated with the liquid reservoir through an air inlet pipe; and
and one end of the driving shaft is connected to the rotor of the motor, and the other end of the driving shaft is connected to the pump body.
2. The compressor of claim 1, wherein the first and second casings are integrally formed, and an annular positioning step is formed between the first and second casings, and the bottom of the stator is located on the positioning step.
3. The compressor of claim 1, wherein the pump body includes a cylinder, a piston, an upper cylinder head, and a lower cylinder head; the piston is rotatably arranged in the cylinder body, and the upper cylinder cover and the lower cylinder cover are respectively packaged at the two axial ends of the cylinder body; the upper cylinder cover is coaxially fixed on the inner wall of the second section of the shell.
4. The compressor of claim 3, wherein the upper head is an interference fit with the second section housing.
5. The compressor of claim 4, wherein the upper cylinder head is welded to an inner wall of the second stage shell.
6. The compressor of claim 3, wherein the upper head is integrally formed with the second section shell.
7. The compressor of claim 1, further comprising an upper shell cover and a lower shell cover, wherein the upper shell cover is coaxially connected to an end of the first section of shell facing away from the second section of shell, and the lower shell cover is coaxially connected to an end of the second section of shell facing away from the first section of shell.
8. The compressor of claim 7, wherein the upper shell cover is provided with an exhaust hole, and an exhaust pipe is connected to the exhaust hole.
9. A compressor shell is characterized in that the shell comprises a first section of shell and a second section of shell which are coaxially connected, wherein the first section of shell and the second section of shell are respectively and fixedly connected with a motor and a pump body of a compressor; the inner diameter of the first section of shell is D1The inner diameter of the second section of shell is D2And satisfy D1>D2(ii) a The total length of the shell is L1The length of the first section of the shell is L2And satisfy L2/L1>25％。
10. The compressor housing of claim 9, wherein the first and second shell segments are integrally formed and define an annular positioning step therebetween for supporting a stator of the compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921129271.1U CN210949135U (en) | 2019-07-18 | 2019-07-18 | Compressor and shell thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921129271.1U CN210949135U (en) | 2019-07-18 | 2019-07-18 | Compressor and shell thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210949135U true CN210949135U (en) | 2020-07-07 |
Family
ID=71377570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921129271.1U Active CN210949135U (en) | 2019-07-18 | 2019-07-18 | Compressor and shell thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210949135U (en) |
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2019
- 2019-07-18 CN CN201921129271.1U patent/CN210949135U/en active Active
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