CN210195973U - Back cover of swash plate type variable displacement compressor - Google Patents
Back cover of swash plate type variable displacement compressor Download PDFInfo
- Publication number
- CN210195973U CN210195973U CN201920833540.6U CN201920833540U CN210195973U CN 210195973 U CN210195973 U CN 210195973U CN 201920833540 U CN201920833540 U CN 201920833540U CN 210195973 U CN210195973 U CN 210195973U
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- CN
- China
- Prior art keywords
- hole
- bolt hole
- rear cover
- cover body
- separation groove
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- Expired - Fee Related
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 20
- 238000003754 machining Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 abstract description 4
- 238000004512 die casting Methods 0.000 abstract description 3
- 238000005057 refrigeration Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Compressor (AREA)
Abstract
The utility model discloses a back cover of a swash plate type variable displacement compressor, which comprises a back cover body, wherein the front surface of the back cover body is provided with an air suction cavity, an air exhaust cavity and a first bolt hole; the core-pulling hole is formed in the bottom of the first bolt hole, and the reserved space of the core-pulling hole is utilized to ensure that a drill bit of a machining tool cannot contact the cover body when the first bolt hole is subjected to thread machining, so that machining contact is avoided. A separation groove is formed in the rear surface of the rear cover body and is located between the second bolt hole and the exhaust cavity; on the one hand, the processing contact can be weakened, on the other hand, the wall thickness of the cover body between the first bolt hole and the separation groove is also reduced, the looseness of the rear cover body can be reduced in the die-casting process, the density of the bolt hole and the exhaust cavity is improved, the leakage rate of the rear cover in the using process is effectively reduced, and the refrigerating efficiency and the starting performance of the compressor are improved.
Description
Technical Field
The utility model relates to a swash plate formula variable displacement compressor, concretely relates to back lid of swash plate formula variable displacement compressor
Background
The automobile air-conditioning compressor is directly driven by an engine, for an automobile air-conditioning system with a fixed displacement compressor, the air outlet temperature of an evaporator is used for controlling the electromagnetic clutch to be attracted or separated, and the intermittent operation is used for controlling the refrigerating capacity of the system to be adaptive to the load of the air conditioner in the automobile. The control mode has the defects that the temperature fluctuation of the air conditioner in the automobile is large, the energy consumption of the system is increased due to the irreversible loss of frequent start and stop of the system and the like, the biggest problem is the interference of the periodic clutch of the compressor on the automobile engine, and the situation is more prominent when the capacity of the automobile engine is smaller. To solve this problem, variable displacement compressors have come into force.
The operating conditions of the swash plate type variable displacement compressor are generally severe, such as: the requirement on the compressor is also higher in the environment of heavy load, high rotating speed, stress alternation, high vibration frequency and the like, such as: low noise, continuous refrigeration, good vibration resistance and durability, and the like. Therefore, when the compressor works, the rear cover of the compressor is easy to cause stress deformation, leakage, low refrigeration efficiency and the like. This puts higher demands on the processing quality and performance of the rear cover.
The back cover is an important and complex part in the swash plate type variable displacement compressor, and the back cover is connected with other parts such as an automobile air conditioner compressor and the like through bolt holes arranged in the back cover, so that the arrangement and the position of the bolt holes in the back cover have important influence on the connection sealing performance of the back cover and the parts such as the compressor and the like and the performance of the back cover. In the conventional rear cover structure, because the distance between the bolt holes is short, when a certain bolt hole is threaded, certain machining interference is generated on the adjacent bolt hole and the cover body nearby due to machining contact, and thus the quality of the rear cover is adversely affected.
Disclosure of Invention
The utility model aims at providing a back lid of swash plate formula variable displacement compressor to solve among the prior art bolt hole and carry out screw thread man-hour, because the problem of the processing defect that the processing contact leads to, thereby improve the density of bolt hole, cavity, can effectively reduce the leakage rate of back lid in the use, improve compressor refrigeration efficiency and startability.
In order to achieve the above object, the utility model adopts the following technical scheme:
a back cover of a swash plate type variable displacement compressor comprises a back cover body, wherein a gas suction cavity, a gas exhaust cavity and a first bolt hole are formed in the front surface of the back cover body; the core pulling hole is formed in the bottom of the first bolt hole, a separation groove is formed in the rear surface of the rear cover body, and the separation groove is located between the second bolt hole and the exhaust cavity.
In a further scheme, the wall thickness between the bottom of the separation groove and the bottom of the coring hole is 3-4 mm.
In a further scheme, the separation groove is a cuboid, the length of the separation groove is 9mm, the width of the separation groove is 6mm, and the depth of the separation groove is 11.5 mm.
In a further scheme, the bottom of the core pulling hole 401 is hemispherical, the connecting end of the core pulling hole 401 and the first bolt hole 4 is cylindrical, and the depth of the bottom of the core pulling hole is 20-22 mm.
Further, the effective depth of the machining thread of the first bolt hole is 16-16.5 mm.
In a further scheme, a connecting through hole is formed in the air suction cavity and is connected with the control valve assembling hole.
According to the further scheme, the cross section of the connecting through hole is waist-shaped, and the processing position can be effectively controlled through the waist-shaped design, so that the processing efficiency is improved.
Has the advantages that:
the utility model provides a pair of back lid of swash plate formula variable displacement compressor forms the coring hole through deepening to first bolt hole bottom, utilizes the headspace in coring hole, ensures carrying out screw thread man-hour to first step bolt hole, makes the drill bit of machining tool can not contact the lid to avoid processing the contact, improve processing defect. And simultaneously, the utility model discloses separate the groove at the rear surface of back lid body has been seted up, through with separate the groove design between second bolt hole and exhaust chamber, thereby separate second bolt hole and exhaust chamber, on the one hand can weaken the processing contact, on the other hand has also reduced the wall thickness of lid between first bolt hole and the separate groove, the die-casting in-process can reduce the looseness of back lid body, improve first bolt hole, the density of exhaust chamber cavity, can effectively reduce the leakage rate of back lid in the use, improve compressor refrigeration efficiency and startability.
Drawings
Fig. 1 is a front view of the rear cover of the present invention;
fig. 2 is a rear view of the rear cover of the present invention;
FIG. 3 is a cross-sectional view of section A-A of FIG. 2;
fig. 4 is a side view of the rear cover of the present invention;
reference numerals: 1-rear cover body, 11-front surface, 12-rear surface, 2-suction cavity, 3-exhaust cavity, 4-first bolt hole, 401-core-pulling hole, 5-suction joint, 6-second bolt hole, 7-connecting through hole, 8-separating groove and 9-control valve assembling hole.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, a back cover of a swash plate type variable displacement compressor comprises a back cover body 1, wherein the thickness of the back cover body is 35mm, a suction cavity 2, an exhaust cavity 3 and a first bolt hole 4 are formed in a front surface 11 of the back cover body 1, a control valve assembling hole 9 is formed in a back surface 12 of the back cover body 1, a suction joint 5 is arranged on a side surface of the back cover body, and a second bolt hole 6 is formed in the suction joint 5; the bottom of the first bolt hole 4 is provided with a core-pulling hole 401, the rear surface 12 of the rear cover body is provided with a separation groove 8, and the separation groove 8 is positioned between the second bolt hole 6 and the exhaust cavity 3. The wall thickness between the bottom of the separation groove 8 and the bottom of the coring hole 401 is 3.5 mm; the separation groove 8 is a cuboid, the length of the separation groove is 9mm, the width of the separation groove is 6mm, and the depth of the separation groove is 11.5 mm; the bottom of the coring hole 401 is hemispherical, the connecting end of the coring hole 401 and the first bolt hole 4 is cylindrical, and the depth of the coring hole 401 is 20 mm. The effective depth of the machined thread of the first bolt hole 4 is 16 mm. Be provided with connect the via hole 7 in the suction chamber, connect the via hole 7 and link to each other with control valve pilot hole 9, connect the cross-section of via hole 7 and be waist shape, through waist shape design, can effective control machining position, improve machining efficiency.
Rotary swash plate formula variable displacement compressor's back lid, through deepening formation coring hole 401 in first bolt hole 4 bottoms, when carrying out screw thread machining to first bolt hole, utilize the headspace in coring hole, make the drill bit of machining tool can not contact the lid to avoid processing the contact, improve processing defect. And simultaneously, the utility model discloses separate groove 8 has been seted up at the rear surface of back lid body, through with separate groove 8 design between second bolt hole 6 and exhaust chamber 3, thereby separate second bolt hole 6 and exhaust chamber 3, on the one hand, the processing contact can weaken, on the other hand has also reduced the wall thickness of lid between first bolt hole 4 and the separate groove 8, the die-casting in-process can reduce the looseness of back lid body, improve first bolt hole 4, the density of exhaust chamber cavity, can effectively reduce the leakage rate of back lid in the use, improve compressor refrigeration efficiency and startability.
Claims (7)
1. The utility model provides a back lid of swash plate formula variable displacement compressor, includes back lid body (1), the front surface (11) of back lid body (1) have been seted up and have been breathed in chamber (2), exhaust chamber (3), first bolt hole (4), back surface (12) of back lid body (1) are equipped with control valve pilot hole (9), the side of back lid body is equipped with suction joint (5), second bolt hole (6), its characterized in that have been seted up on suction joint (5): the core pulling hole (401) is formed in the bottom of the first bolt hole (4), the separation groove (8) is formed in the rear surface (12) of the rear cover body, and the separation groove (8) is located between the second bolt hole (6) and the exhaust cavity (3).
2. The rear cover according to claim 1, wherein: the wall thickness between the bottom of the separation groove (8) and the bottom of the coring hole (401) is 3-4 mm.
3. The rear cover according to claim 1, wherein: the separation groove (8) is a cuboid.
4. The rear cover according to claim 1, wherein: the bottom of the core-pulling hole (401) is hemispherical, the connecting end of the core-pulling hole (401) and the first bolt hole (4) is cylindrical, and the depth of the bottom of the core-pulling hole (401) is 20-22 mm.
5. The rear cover according to claim 1, wherein: the effective depth of the machining thread of the first bolt hole (4) is 16-16.5 mm.
6. The rear cover according to claim 1, wherein: a connecting through hole (7) is formed in the air suction cavity, and the connecting through hole (7) is connected with a control valve assembling hole (9).
7. The rear cover according to claim 6, wherein: the cross section of the connecting through hole (7) is waist-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920833540.6U CN210195973U (en) | 2019-06-04 | 2019-06-04 | Back cover of swash plate type variable displacement compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920833540.6U CN210195973U (en) | 2019-06-04 | 2019-06-04 | Back cover of swash plate type variable displacement compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210195973U true CN210195973U (en) | 2020-03-27 |
Family
ID=69872945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920833540.6U Expired - Fee Related CN210195973U (en) | 2019-06-04 | 2019-06-04 | Back cover of swash plate type variable displacement compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210195973U (en) |
-
2019
- 2019-06-04 CN CN201920833540.6U patent/CN210195973U/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: 20200327 |