CN210033834U - Rotary compressor capable of automatic centering - Google Patents
Rotary compressor capable of automatic centering Download PDFInfo
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- CN210033834U CN210033834U CN201920609345.5U CN201920609345U CN210033834U CN 210033834 U CN210033834 U CN 210033834U CN 201920609345 U CN201920609345 U CN 201920609345U CN 210033834 U CN210033834 U CN 210033834U
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- support
- shell
- centering
- motor
- rotary compressor
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Abstract
A rotary compressor capable of automatically centering comprises a shell, a motor, a compression pump, a first support, a second support and a centering assembly. The shell comprises a body part, a first cover body and a second cover body, wherein the body part is made of a first material, and the first support is made of a second material. The centering assembly is an elastic body and is an annular body, and the centering assembly is arranged between the first support and the body part of the shell. When the body part of the shell expands more than the first support after being heated, the gap between the body part of the shell and the first support is enlarged due to the heating, the centering assembly rebounds to make up the gap, and the compression pump and the motor can be arranged in a concentric position.
Description
Technical Field
The utility model relates to a rotary compressor to the heart automatically especially relates to a rotary compressor that can be applied to automobile-used compressor.
Background
Generally, an electric compressor for compressing a refrigerant and circulating the refrigerant in a circuit basically drives a connected compression mechanism to operate through a dc motor, thereby achieving the operation of compressing and circulating the refrigerant. According to the different internal compression mechanisms, the common compressors include rotary compressors, scroll compressors and screw compressors.
The centering assembly of the existing compressor is one of the important considerations for mass production, and the centering operation of the assembly of the general rotary compressor is required to depend on external equipment or jigs. The existing fully-closed rotary compressor fixes a compression pump on a shell in a welding mode, and the automotive compressor considers the factors of installation, a controller, light weight, heat dissipation, electronic interference resistance and the like, if an aluminum alloy shell is selected, because a support of the compression pump is made of cast iron materials, the expansion of the aluminum alloy shell after temperature rise is larger than that of the cast iron materials of the support of the compression pump, so that the support of the compression pump cannot be welded on the shell.
The welding of dissimilar materials of aluminum alloy is very difficult, and the strength after welding is much lower than that of the base material, but if the aluminum alloy is locked by screws, the thermal expansion amount of the aluminum alloy is 0.222x10-4The thermal expansion amount of the cast iron material of the support of the compression pump is 0.102x10-4If the working temperature reaches 100 ℃, a gap of 0.1mm is generated between the two materials due to thermal expansion, and if the two materials are fixed in a locking manner, sliding abrasion or tensile stress is generated between the materials, and finally the mechanism is loosened or broken.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a rotary compressor that can be automatic to the heart is provided to the not enough of prior art, can accomplish the heart action by oneself.
In order to solve the above technical problem, the present invention provides a rotary compressor capable of automatically centering, which comprises a housing, a motor, a compression pump, a first support, and a centering assembly. The shell comprises a body part, a first cover body and a second cover body, wherein the body part is made of a first material, the body part is a hollow body, two ends of the body part are in an opening shape, the first cover body and the second cover body are respectively assembled at two ends of the body part, and the shell is connected with a suction pipe and a discharge pipe; a motor disposed in the housing, the motor including a stator and a rotor, the rotor rotatably disposed in the stator; the compression pump is arranged in the shell and comprises a cylinder body and a ring, the ring is rotatably arranged in the cylinder body, and the ring is connected to the rotor of the motor through an eccentric shaft; the first support is made of a second material, the first material and the second material are different materials, the first support and the second support are arranged in the shell, and the cylinder body of the compression pump is arranged between the first support and the second support; the centering assembly is an elastic body and is an annular body, and the centering assembly is arranged between the first support and the body part of the shell; when the body part of the shell is heated and expands more than the first support, the gap between the body part of the shell and the first support is enlarged due to the heating, the centering assembly rebounds to make up the gap, and the compression pump and the motor can be arranged at the concentric position.
Preferably, the body portion of the housing is an aluminum alloy piece, and the first holder is an iron casting.
Preferably, the first support is closer to the motor than the second support, and the first support is located between the motor and the second support.
Preferably, the centering component is an elastomer made of hydrogenated nitrile rubber.
Preferably, the first support has an outer wall, the outer wall is located on one side of the first support close to the body portion of the housing, the outer wall is provided with an annular groove, the annular groove is annularly arranged on the outer wall, and the centering assembly is accommodated in the annular groove.
Preferably, the main body of the housing has an inner wall, the inner wall includes an assembling surface and a positioning surface, the assembling surface and the positioning surface are disposed in the main body in a surrounding manner, the assembling surface is parallel to the axial direction of the housing, the assembling surface and the positioning surface are perpendicular to each other, the outer wall of the first support corresponds to the assembling surface of the main body of the housing, and the first support abuts against the positioning surface to be positioned.
The beneficial effects of the utility model reside in that, the body portion of the casing that makes with first material heaies up the back inflation and is greater than the first support of making with the second material, uses the heart subassembly that elastic material made, pre-compaction earlier in dissimilar material contact position before the use, treats its clearance because of when heaing up the grow, remedies the clearance to heart subassembly rebound, still can arrange the compression pump in concentric position with the motor, and can reduce the transmission of compression pump noise to the casing.
For a further understanding of the nature and technical content of the present invention, reference should be made to the following detailed description of the invention and accompanying drawings, which are provided for reference and illustration purposes only and are not intended to limit the invention.
Drawings
Fig. 1 is a sectional view of the rotary compressor of the present invention capable of automatically centering.
Fig. 2 is a detailed view of part ii of fig. 1 (normal temperature state).
Fig. 3 is a sectional view of the high temperature state of fig. 2.
Detailed Description
[ examples ]
Referring to fig. 1 to 3, the present invention provides a rotary compressor capable of automatically centering, which includes a housing 1, a motor 2, a compression pump 3, a first support 4, a second support 5 and a centering assembly 6.
The housing 1 is a hollow housing for accommodating the motor 2, the compression pump 3, the first support 4 and the second support 5. The housing 1 includes a main body 11, a first cover 12 and a second cover 13, wherein the main body 11, the first cover 12 and the second cover 13 are made of a first material, preferably a light metal material, preferably an aluminum alloy member. The main body 11 is a hollow body, and both ends of the main body 11 are open. The first cover 12 and the second cover 13 are respectively assembled at two ends of the main body 11 to respectively seal the two ends of the main body 11. In this embodiment, the first cover 12 is assembled to one end of the main body 11 by a plurality of first screws 14, and the second cover 13 is assembled to the other end of the main body 11 by a plurality of second screws 15, so that the main body 11, the first cover 12 and the second cover 13 form a sealed housing.
The shell 1 is connected with a suction pipe 16 and a discharge pipe 17, the suction pipe 16 and the discharge pipe 17 are communicated with the interior of the shell 1, and the suction pipe 16 and the discharge pipe 17 can be used for respectively inputting and outputting refrigerants. In the present embodiment, the suction pipe 16 is connected to the second cover 13 of the housing 1, and the discharge pipe 17 is connected to the main body 11 of the housing 1.
The motor 2 is disposed in the housing 1, the motor 2 includes a stator 21 and a rotor 22, the stator 21 is fixed on the inner wall of the housing 1, and the rotor 22 is rotatably disposed in the stator 21. Since the motor 2 is a conventional motor, the present invention does not limit the structure of the motor 2, and thus the detailed description thereof is omitted.
The compression pump 3 is disposed in the housing 1, the compression pump 3 includes a cylinder 31 and a ring 32, the number of the cylinder 31 and the ring 32 is not limited, that is, the compression pump 3 can be a single cylinder or a double cylinder, the number of the cylinder 31 and the ring 32 can be one or two, the embodiment is provided with two cylinders 31 and two rings 32 to form a double cylinder design. The ring 32 is rotatably disposed in the cylinder block 31, and the ring 32 is connected to the rotor 22 of the motor 2 through an eccentric shaft 33.
The first support 4 and the second support 5 are made of a second material, preferably cast iron, i.e. the first support 4 and the second support 5 may be cast iron, the first material and the second material being different materials. The first support 4 and the second support 5 are disposed in the casing 1, the first support 4 and the second support 5 are disposed at an interval, the first support 4 is closer to the motor 2 than the second support 5, and the first support 4 is disposed between the motor 2 and the second support 5. The cylinder 31 of the compression pump 3 is disposed between the first support 4 and the second support 5, and the first support 4 and the second support 5 can support the cylinder 31 and the eccentric shaft 33.
The centering component 6 is made of an elastic material, that is, the centering component 6 is an elastic body which can work in a refrigerant, and the center can be automatically adjusted with processing precision, and the material of the centering component 6 is preferably Hydrogenated Nitrile Butadiene Rubber (HNBR). The centering component 6 is an annular body, and the centering component 6 is disposed between the first support 4 and the body portion 11 of the housing 1. In this embodiment, the first holder 4 has an outer wall 41, and the outer wall 41 is located on a side of the first holder 4 close to the body portion 11 of the housing 1. The outer wall 41 is provided with a ring-shaped groove 42, and the ring-shaped groove 42 is annularly arranged on the outer wall 41. The centering element 6 is accommodated in the annular groove 42, so that the centering element 6 can be disposed between the first support 4 and the body 11 of the housing 1.
In this embodiment, the main body 11 of the housing 1 has an inner wall 111, the inner wall 111 is located at a side of the main body 11 close to the motor 2, the compression pump 3, the first support 4 and the second support 5, the inner wall 111 includes an assembling surface 1111 and a positioning surface 1112, the assembling surface 1111 and the positioning surface 1112 are annularly disposed in the main body 11, the assembling surface 1111 is parallel to the axial direction of the housing 1, and the assembling surface 1111 and the positioning surface 1112 are perpendicular to each other. When the first holder 4 is disposed in the housing 1, the outer wall 41 of the first holder 4 corresponds to the assembling surface 1111 of the main body 11 of the housing 1, and the first holder 4 can be abutted against the positioning surface 1112 for positioning. The centering assembly 6 is disposed between the first supporting seat 4 and the assembling surface 1111 of the main body 11 of the housing 1.
When the body 11 of the housing 1 made of the first material (aluminum alloy) is heated and then expands more than the first support 4 made of the second material (cast iron), the centering assembly 6 made of the elastic material is pre-pressed at the contact position of the different materials before use (as shown in fig. 2), and when the gap between the centering assembly 6 and the first support increases due to the heating (as shown in fig. 3), the centering assembly 6 rebounds to compensate the gap, and the compression pump 3 and the motor 2 can still be arranged at the concentric position. As disclosed in fig. 2, at ambient temperature (e.g., 25 ℃); the operating temperature (e.g., 60 ℃ C. to 130 ℃ C.) is disclosed in FIG. 3.
The horizontal type rotary compressor may further include an electrical connector 7, the electrical connector 7 is disposed on the casing 1, that is, the electrical connector 7 may be disposed on the first cover 12 of the casing 1. The electrical connector 7 is electrically connected to the motor 2, and the electrical connector 7 is used to electrically connect the motor 2 with an external power device, so that power can be transmitted to the motor 2 through the electrical connector 7 to drive the motor 2. The stator 21 of the motor 2 drives the rotor 22 to rotate the eccentric shaft 33, and the eccentric shaft 33 drives the ring 32 to rotate in the cylinder 31, so that the gas refrigerant is sucked into the compression space inside the cylinder 31 of the compression pump 3 through the suction pipe 16, is continuously compressed to a certain pressure, and is discharged into the casing 1 through the discharge hole (not shown). The discharged refrigerant may move upward through a gap between the casing 1 and the stator 21 or a gap between the stator 21 and the rotor 22, and finally discharged into the refrigeration cycle through the discharge pipe 17.
In another embodiment of the present invention, the present invention can be applied to a semi-hermetic rotary compressor, the motor is disposed on the low temperature side, and the centering assembly can be used to separate the high temperature side and the low temperature side, so as to avoid the motor temperature from being too high, and improve the efficiency of the motor.
[ advantageous effects of the embodiments ]
The beneficial effects of the utility model reside in that, the utility model discloses the body portion of the casing made with first material (aluminum alloy) heaies up the back inflation and is greater than the first support of making with second material (cast iron), uses the heart subassembly that elastic material made, prepressing earlier in dissimilar material contact position before the use, treat the body portion of casing and the clearance of first support when the grow that heaies up, compensate the clearance to the heart subassembly rebound, still can arrange the compression pump in concentric position with the motor, and can reduce the transmission of compression pump noise to the casing.
However, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, so that all equivalent changes and modifications of the present invention, which are made by the contents of the specification and the drawings, are equally encompassed by the scope of the present invention, and it is well known that the present invention is also applicable.
Claims (6)
1. A rotary compressor capable of automatic centering is characterized by comprising:
a shell, including a main body made of a first material, a first cover and a second cover, the main body being a hollow body, two ends of the main body being open, the first cover and the second cover being assembled to the two ends of the main body, the shell being connected to a suction pipe and a discharge pipe;
a motor disposed in the housing, the motor including a stator and a rotor, the rotor rotatably disposed in the stator;
a compression pump disposed in the housing, the compression pump including a cylinder and a ring rotatably disposed in the cylinder, the ring being connected to the rotor of the motor via an eccentric shaft;
the first support is made of a second material, the first material and the second material are different materials, the first support and the second support are arranged in the shell, and the cylinder body of the compression pump is arranged between the first support and the second support; and
the centering assembly is an elastic body and is in an annular body shape, and the centering assembly is arranged between the first support and the body part of the shell;
when the body part of the shell is heated and expands more than the first support, the gap between the body part of the shell and the first support is enlarged due to the heating, the centering assembly rebounds to make up the gap, and the compression pump and the motor can be arranged at the concentric position.
2. The self-centering rotary compressor according to claim 1, wherein the body of the casing is an aluminum alloy member, and the first support is an iron casting member.
3. The self-centering rotary compressor of claim 1, wherein the first support is closer to the motor than the second support, and the first support is located between the motor and the second support.
4. The rotary compressor capable of self-centering as claimed in claim 1, wherein the centering member is an elastomer made of hydrogenated nitrile rubber.
5. The rotary compressor of claim 1, wherein the first support has an outer wall, the outer wall is located on a side of the first support near the body of the shell, the outer wall has an annular groove, the annular groove is disposed on the outer wall, and the centering assembly is received in the annular groove.
6. The rotary compressor of claim 5, wherein the body of the casing has an inner wall, the inner wall includes an assembling surface and a positioning surface, the assembling surface and the positioning surface are disposed in the body, the assembling surface is parallel to the axial direction of the casing, the assembling surface and the positioning surface are perpendicular to each other, the outer wall of the first support corresponds to the assembling surface of the body of the casing, and the first support is abutted against the positioning surface for positioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920609345.5U CN210033834U (en) | 2019-04-29 | 2019-04-29 | Rotary compressor capable of automatic centering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920609345.5U CN210033834U (en) | 2019-04-29 | 2019-04-29 | Rotary compressor capable of automatic centering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210033834U true CN210033834U (en) | 2020-02-07 |
Family
ID=69362679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920609345.5U Expired - Fee Related CN210033834U (en) | 2019-04-29 | 2019-04-29 | Rotary compressor capable of automatic centering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210033834U (en) |
-
2019
- 2019-04-29 CN CN201920609345.5U patent/CN210033834U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200207 Termination date: 20210429 |