CN220204121U - Back pressure assembly, scroll compressor and air conditioning system - Google Patents
Back pressure assembly, scroll compressor and air conditioning system Download PDFInfo
- Publication number
- CN220204121U CN220204121U CN202321116499.3U CN202321116499U CN220204121U CN 220204121 U CN220204121 U CN 220204121U CN 202321116499 U CN202321116499 U CN 202321116499U CN 220204121 U CN220204121 U CN 220204121U
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- back pressure
- top cover
- floating
- pressure plate
- assembly
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 14
- 238000007667 floating Methods 0.000 claims abstract description 64
- 238000005192 partition Methods 0.000 claims description 29
- 238000007789 sealing Methods 0.000 claims description 27
- 238000000926 separation method Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model relates to the technical field of vortex compressors, in particular to a back pressure assembly, a vortex compressor and an air conditioning system, and aims to solve the technical problems of larger radial space, complex structure and assembly and high cost in the existing back pressure design. The back pressure assembly comprises a top cover, a shell and a floating back pressure plate; the top cover is connected with the shell, and a pressure cavity is formed by surrounding the top cover and the shell; the floating back pressure plate is arranged in the pressure cavity, and two ends of the floating back pressure plate are respectively in abutting fit with the top cover and the shell, so that the pressure cavity is separated to form a high-pressure cavity and a low-pressure cavity. The scroll compressor includes a back pressure assembly. The air conditioning system includes a scroll compressor. By adopting the back pressure component, the bolt connection is omitted, the required radial space is reduced, the structure and assembly are simple, and the cost is correspondingly reduced.
Description
Technical Field
The utility model relates to the technical field of scroll compressors, in particular to a back pressure assembly, a scroll compressor and an air conditioning system.
Background
With the continuous development of the new energy automobile industry, how to improve the endurance mileage of the new energy automobile is always an important point in the industry. Among the factors affecting the range, the energy consumption of the air conditioning system is a considerable share, where the energy consumption of the compressor is a major concern.
The electric vortex compressor is commonly adopted in the new energy automobile, the core compression part of the electric vortex compressor is vortex, the internal sealing of the vortex is the internal sealing core technology of the new energy automobile compressor, and at present, two modes of TipSeal sealing or 'back pressure' sealing are mainly adopted. The back pressure design provides better axial sealing than the former, thereby achieving higher performance.
In back pressure design, one of them is through the mode that decides vortex floating, and this mode usually has a baffle or back pressure board to be used for keeping apart high pressure chamber and low pressure chamber, and baffle or back pressure board pass through screw and top cap or casing fixed connection, so increased screw connection, the radial space that needs is bigger, moreover, structure and assembly are complicated, and is with high costs.
Disclosure of Invention
The utility model aims to provide a back pressure component, a vortex compressor and an air conditioning system, which are used for solving the technical problems of larger radial space, complex structure and assembly and high cost in the existing back pressure design.
In order to solve the technical problems, the technical scheme provided by the utility model is as follows:
in a first aspect, the present utility model provides a back pressure assembly comprising: the device comprises a top cover, a shell and a floating back pressing plate;
the top cover is connected with the shell, and a pressure cavity is formed by surrounding the top cover and the shell;
the floating back pressure plate is arranged in the pressure cavity in a floating mode, one end of the floating back pressure plate is abutted to the shell, and the other end of the floating back pressure plate is abutted to the top cover, so that the pressure cavity is separated to form a high-pressure cavity and a low-pressure cavity.
Further, the floating back pressure plate comprises a separation part and a thrust part;
one end of the separation part is abutted against the top cover, and the other end of the separation part is connected with the thrust part;
one end of the thrust part, which is far away from the separation part, is abutted against the shell.
Further, the thrust portion and the partition portion are integrally formed;
around the edge of the partition, the thrust portion protrudes from the partition and extends in a direction away from the partition.
Further, the thrust portion is cylindrical, and both ends thereof are respectively abutted against the partition portion and the housing.
Further, the back pressure assembly further comprises a sealing ring, and the sealing ring is abutted between the end face of the floating back pressure plate and the top cover.
Further, the end face of the floating back pressing plate is provided with a limit groove, and the limit groove extends around the axis of the floating back pressing plate;
the sealing ring is arranged in the limiting groove.
Further, the back pressure assembly further comprises a sealing ring, and the sealing ring is abutted between the side face of the floating back pressure plate and the top cover.
Further, a limit groove is formed in the side face of the floating back pressing plate, and the limit groove extends around the circumference of the floating back pressing plate;
the sealing ring is arranged in the limiting groove.
In a second aspect, the present utility model provides a scroll compressor comprising the back pressure assembly.
In a third aspect, the present utility model provides an air conditioning system comprising the scroll compressor.
In summary, the technical effects that the back pressure assembly provided by the utility model can achieve are as follows:
in the application, the floating back pressing plate is positioned in a pressure cavity formed by surrounding the top cover and the shell, so that the separation of the pressure cavity is realized, and a high-pressure cavity and a low-pressure cavity are isolated; the floating back pressure plate is abutted with the shell under the pressure action of the high-pressure cavity, so that the floating back pressure plate is fixed.
Compared with the prior art, in the back pressure assembly, the floating back pressure plate is not fixedly connected with the top cover and the shell, and in the working process of the compressor, the floating back pressure plate is directly thrust to the shell in the axial direction under the pressure of the high-pressure cavity, so that the bolt connection of the back pressure plate and the top cover or the shell in the prior art is omitted, the required radial space is reduced, the structure and the assembly are simple, and the cost is correspondingly reduced.
The scroll compressor provided by the utility model has the beneficial effects that:
the technical advantages and effects achieved by the scroll compressor provided by the utility model include the back pressure component, and therefore, the technical advantages and effects achieved by the back pressure component are also included, and are not repeated herein.
The air conditioning system provided by the utility model has the beneficial effects that:
the air conditioning system provided by the utility model comprises the scroll compressor, so that the technical advantages and effects achieved by the air conditioning system comprise the technical advantages and effects achieved by the scroll compressor, and are not repeated herein.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of a back pressure assembly provided by an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of a first embodiment of a back pressure assembly provided by an embodiment of the present utility model;
FIG. 3 is a cross-sectional view of a second embodiment of a back pressure assembly provided by an embodiment of the present utility model;
fig. 4 is a cross-sectional view of a scroll compressor provided by an embodiment of the present utility model.
Icon: 100-top cover; 110-exhaust port;
200-a housing; 210-suction port;
300-floating back pressure plate; 310-partitions; 320-thrust portion;
400-high pressure chamber; 500-low pressure chamber; 600-sealing rings;
700-motor; 710-motor shaft;
800-moving vortex; 900-non-orbiting scroll.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
In back pressure design, one of them is through the mode that decides vortex floating, and this mode usually has a baffle or back pressure board to be used for keeping apart high pressure chamber and low pressure chamber, and baffle or back pressure board pass through screw and top cap or casing fixed connection, so increased screw connection, the radial space that needs is bigger, moreover, structure and assembly are complicated, and is with high costs.
In view of this, the present utility model provides a back pressure assembly, referring to fig. 1 to 4, including a top cover 100, a housing 200, and a floating back pressure plate 300; the top cover 100 is connected with the shell 200, and a pressure cavity is formed by surrounding the top cover 100 and the shell; the floating back pressure plate 300 is floatingly disposed in the pressure chamber, and one end thereof abuts against the housing 200, and the other end abuts against the top cover 100, so as to separate the pressure chamber into a high pressure chamber 400 and a low pressure chamber 500.
With continued reference to the assembled compressor head shown in fig. 1-4, the floating back pressure plate 300 is positioned in a pressure cavity formed by the top cover 100 and the shell 200, so that the separation of the pressure cavity is realized, and the high pressure cavity 400 and the low pressure cavity 500 are isolated; the two ends of the floating back pressure plate 300 are respectively abutted against the top cover 100 and the housing 200, thus realizing the fixation of the floating back pressure plate 300.
It can be seen that, compared with the prior art, in the back pressure assembly, the floating back pressure plate 300 is not fixedly connected with the top cover 100 and the housing 200, but the floating back pressure plate 300 is directly thrust to the housing 200 in the axial direction under the pressure of the high pressure cavity during the working process of the compressor, so that the bolt connection of the back pressure plate and the top cover or the housing in the prior art is omitted, the required radial space is reduced, the structure and the assembly are simplified, and the cost is correspondingly reduced.
The structure and shape of the back pressure assembly provided in this embodiment are described in detail below with reference to fig. 1 to 4:
further, referring to fig. 1 to 3, the floating back pressure plate 300 includes a partition portion 310 and a thrust portion 320; one end of the partition 310 abuts against the top cover 100, and the other end is connected to the thrust portion 320; one end of the thrust portion 320 away from the partition portion 310 abuts against the housing 200.
With continued reference to fig. 1 to 3, the partition 310 is adapted to the inner wall of the top cover 100, the left end surface thereof is in contact with the top cover 100, the right end surface thereof is connected to the left end of the thrust portion 320, and the right end of the thrust portion 320 is in contact with the housing 200. So designed, the fixation of the partition 310 is achieved, thereby partitioning the pressure chamber into a high pressure chamber 400 and a low pressure chamber 500.
In one embodiment of the present application, referring to fig. 2 and 3, the thrust portion 320 is integrally formed with the partition portion 310; around the edge of the partition 310, the thrust portion 320 protrudes from the partition 310 and extends in a direction away from the partition 310.
Taking fig. 2 as an example, a high-pressure cavity 400 is formed by surrounding the left end surface of the partition part 310 and the inner wall of the top cover 100; the thrust portion 320 protruding from the right end surface of the partition portion 310 is cylindrical, the outer wall of the thrust portion 320 is attached to the inner wall of the top cover 100, and the inner wall encloses the right end surface of the partition portion 310 and the top cover 100 to form a low pressure chamber 500. By the design, the position of the floating back pressure plate 300 is fixed, the high-pressure cavity 400 and the low-pressure cavity 500 are isolated, and the structure and the assembly of the floating back pressure plate 300 are simplified.
In other embodiments, referring to fig. 1, the thrust portion 320 is cylindrical, and both ends thereof are respectively in contact with the partition portion 310 and the housing 200.
With continued reference to fig. 1, the partition portion 310 and the thrust portion 320 are of a split type design, and the left end of the thrust portion 320 abuts against the right end surface of the partition portion 310 and the right end abuts against the housing 200. With this design, the partition portion 310 and the thrust portion 320 can be separately machined, simplifying the machining of the floating back pressure plate 300.
Referring to fig. 2 and 3, the back pressure assembly further includes a sealing ring 600, the floating back pressure plate 300 is in clearance fit with the inner end surface of the top cover 100 under the pressure of the high pressure chamber 400 during operation, the clearance can reduce the machining precision requirement on the axial dimension of the floating back pressure plate 300, and the floating back pressure plate 300 is also "floating" during operation, and the sealing ring 600 is used for sealing the clearance.
In one embodiment of the present application, referring to fig. 2, a seal ring 600 abuts between an end surface of the floating back pressure plate 300 and the top cover 100.
With continued reference to fig. 2, during operation of the compressor, the floating back pressure plate 300 is separated from the top cover 100, and at this time, the sealing ring 600 is disposed between the end surface of the floating back pressure plate 300 and the top cover 100, and performs a sealing function on the high pressure chamber 400, thereby preventing air flow from overflowing from the gap between the top cover 100 and the floating back pressure plate 300, and ensuring the pressure in the high pressure chamber 400.
Further, please continue to refer to fig. 2, the end surface of the floating back pressure plate 300 is provided with a limit groove, and the limit groove extends around the axis of the floating back pressure plate 300; the seal ring 600 is disposed in the limit groove. By the design, the installation position of the sealing ring 600 is standardized, the sealing ring 600 is prevented from being distorted in the assembly process, and the tightness of the sealing ring 600 is ensured.
In other embodiments, referring to fig. 3, a seal 600 of the back pressure assembly is disposed between the outer cylindrical surface of the floating back pressure plate 300 and the inner cylindrical surface of the top cap 100.
The sealing ring 600 is sleeved on the floating back pressure plate 300 and is abutted against the inner wall of the top cover 100 to seal the high pressure cavity 400, so that air flow is prevented from overflowing from a gap between the top cover 100 and the floating back pressure plate 300, and the pressure in the high pressure cavity 400 is ensured.
Further, referring to fig. 3, the outer cylindrical surface of the floating back pressure plate 300 is provided with a limit groove, and the limit groove extends circumferentially around the outer cylindrical surface of the floating back pressure plate 300; the seal ring 600 is disposed in the limit groove. By the design, the installation position of the sealing ring 600 is standardized, the sealing ring 600 is prevented from being distorted in the assembly process, and the tightness of the sealing ring 600 is ensured.
The floating back pressure plate 300 is matched with the inner side end surface of the shell 200 through the end surface or the outer side surface of the floating back pressure plate 300 is matched with the inner side surface of the shell 200, and the floating back pressure plate 300 and the shell are not movable pieces, so that unstable sealing caused by the fact that the back pressure plate is not absolutely fixed with a cavity or the static vortex plate is prevented between the static vortex plate and the back pressure plate.
Referring to fig. 4, in the scroll compressor, a motor 700 is disposed in a housing 200, and a left scroll bearing, a middle main bearing and a right inverter bearing are interference-fitted in order on a motor shaft 710 thereof from left to right; the movable scroll 800 is fitted to the motor shaft 710 and also fitted to the fixed scroll 900, and is disposed in the low pressure chamber 500. The shell 200 is provided with an air suction port 210, the top cover 100 is provided with an air outlet 110, and the air path and the flow direction from the air suction port 210 to the air outlet 110 are as follows: the air suction port 210, the motor 700 and the motor shaft 710, the main bearing seat, the movable vortex 800, the compression, the high-pressure cavity 400 and the exhaust port 110.
The technical advantages and effects achieved by the scroll compressor provided by the embodiment include the technical advantages and effects achieved by the back pressure assembly, and therefore, the technical advantages and effects achieved by the back pressure assembly are not repeated here.
The present embodiment also provides an air conditioning system including a scroll compressor, so that technical advantages and effects achieved by the air conditioning system include technical advantages and effects achieved by the scroll compressor, which are not described herein again.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (10)
1. A back pressure assembly, comprising: a top cover (100), a housing (200) and a floating back pressure plate (300);
the top cover (100) is connected with the shell (200), and a pressure cavity is formed by surrounding the top cover and the shell;
the floating back pressure plate (300) is arranged in the pressure cavity in a floating mode, one end of the floating back pressure plate is abutted to the shell (200), and the other end of the floating back pressure plate is abutted to the top cover (100) so as to separate the pressure cavity into a high-pressure cavity (400) and a low-pressure cavity (500).
2. The back pressure assembly of claim 1, wherein the floating back pressure plate (300) includes a partition (310) and a thrust (320);
one end of the separation part (310) is abutted against the top cover (100), and the other end is connected with the thrust part (320);
one end of the thrust portion (320) away from the partition portion (310) abuts against the housing (200).
3. The back pressure assembly of claim 2, wherein the thrust portion (320) is integrally formed with the partition (310);
around the edge of the partition (310), the thrust portion (320) protrudes from the partition (310) and extends in a direction away from the partition (310).
4. The back pressure assembly according to claim 2, wherein the thrust portion (320) has a cylindrical shape, and both ends thereof are respectively abutted against the partition portion (310) and the housing (200).
5. The back pressure assembly of any of claims 1 to 4, further comprising a seal ring (600), the seal ring (600) abutting between an end face of the floating back pressure plate (300) and the top cover (100).
6. The back pressure assembly of claim 5, wherein an end face of the floating back pressure plate (300) is provided with a limit groove extending around an axis of the floating back pressure plate (300);
the sealing ring (600) is arranged in the limiting groove.
7. The back pressure assembly of any of claims 1 to 4, further comprising a seal ring (600), the seal ring (600) abutting between a side of the floating back pressure plate (300) and the top cover (100).
8. The back pressure assembly of claim 7, wherein the side of the floating back pressure plate (300) is provided with a limit groove extending circumferentially around the floating back pressure plate (300);
the sealing ring (600) is arranged in the limiting groove.
9. A scroll compressor comprising a back pressure assembly as claimed in any one of claims 1 to 8.
10. An air conditioning system comprising the scroll compressor of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321116499.3U CN220204121U (en) | 2023-05-10 | 2023-05-10 | Back pressure assembly, scroll compressor and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321116499.3U CN220204121U (en) | 2023-05-10 | 2023-05-10 | Back pressure assembly, scroll compressor and air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220204121U true CN220204121U (en) | 2023-12-19 |
Family
ID=89139150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321116499.3U Active CN220204121U (en) | 2023-05-10 | 2023-05-10 | Back pressure assembly, scroll compressor and air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220204121U (en) |
-
2023
- 2023-05-10 CN CN202321116499.3U patent/CN220204121U/en active Active
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| GR01 | Patent grant |