CN213205971U - Rotary vane compressor - Google Patents
Rotary vane compressor Download PDFInfo
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- CN213205971U CN213205971U CN202021972218.0U CN202021972218U CN213205971U CN 213205971 U CN213205971 U CN 213205971U CN 202021972218 U CN202021972218 U CN 202021972218U CN 213205971 U CN213205971 U CN 213205971U
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Abstract
The utility model relates to a compressor technical field especially relates to a rotary vane compressor, include: the intermediate pressure groove is arranged on the end surface of the inner side of a bearing of the rotary vane compressor close to the cylinder chamber and is communicated with the exhaust port through a throttling structure; the first high-pressure groove and the at least one second high-pressure groove are arranged on the end surface of the inner side, close to the cylinder chamber, of the bearing of the rotary vane compressor and are communicated with the air outlet through hole positions; the middle pressure groove is communicated with a back pressure space at the inner side of a blade groove of the rotary vane compressor in the early stages of the air suction process and the compression process; the first high-pressure groove is communicated with the back pressure space at the later stage of the compression process, the second high-pressure groove is communicated with the back pressure space in the exhaust process, and the first high-pressure groove is communicated with at most one back pressure space. The utility model discloses in set up well indent, first hyperbaric groove and second hyperbaric groove, solve the problem that blade backpressure space pressure suddenly drops to prevent that the blade from breaking away from the cylinder body internal face.
Description
Technical Field
The utility model relates to a compressor technical field especially relates to a rotary vane compressor.
Background
The rotary vane compressor is widely applied to an automobile air-conditioning refrigeration system, and in the rotation process of a rotor, the air suction, compression and exhaust processes of a refrigerant are completed along with the change of the volume of a compression cavity. The novel single-working-cavity rotary vane compressor proposed in recent years adopts a single-suction port and double-discharge port structure, and has more superior performance than the traditional single-working-cavity rotary vane compressor and the traditional double-working-cavity rotary vane compressor under the working condition of high rotating speed.
In order to ensure that the vanes can be tightly attached to the inner wall surface of the cylinder body in the operation process of the novel single-suction double-row rotary vane compressor, Japanese patent (Japanese patent laid-open No. 2013-194549) discloses a rotary vane compressor with a medium pressure groove and a high pressure groove, wherein when the back pressure space of the following vanes is changed from being communicated with the medium pressure groove to being communicated with the high pressure groove, the back pressure space of the preceding vanes is already communicated with the high pressure groove. Therefore, when the state transition of the back pressure space to the high pressure groove is completed, the two back pressure spaces in the front and rear are simultaneously in a state of communication with the high pressure groove, and the pressure in the back pressure space of the following vane is a medium pressure, which causes a sudden drop in the pressure in the back pressure space of the preceding vane and temporarily lowers the pressure supplied to the high pressure groove. Therefore, there is a possibility that the preceding blades cannot be brought into close contact with the inner wall surface of the cylinder block, and the blades vibrate, thereby reducing the efficiency and stability of the apparatus and increasing the vibration noise.
In view of the above problems, the present designer is based on the practical experience and professional knowledge of many years of design and manufacture of such products, and is engaged in the application of the theory to actively make research and innovation, so as to create a rotary vane compressor, which is more practical.
SUMMERY OF THE UTILITY MODEL
The utility model discloses in provide a rotary vane compressor to effectively solve the problem among the background art.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a rotary vane compressor, in the rotation direction of a rotor of the rotary vane compressor, is sequentially provided with:
the intermediate pressure groove is arranged on the end surface of the inner side of a bearing of the rotary vane compressor close to the cylinder chamber and is communicated with the exhaust port through a throttling structure;
the first high-pressure groove and the at least one second high-pressure groove are arranged on the end surface of the inner side, close to the cylinder chamber, of the bearing of the rotary vane compressor and are communicated with the air outlet through hole positions;
the first high-pressure groove communicates with at most one back-pressure space inside the vane groove.
Furthermore, the intermediate pressure groove is communicated with a back pressure space on the inner side of a blade groove of the rotary vane compressor in the early stages of the air suction process and the compression process; the first high-pressure groove is communicated with the back pressure space at the later stage of the compression process, and the second high-pressure groove is communicated with the back pressure space in the exhaust process.
Further, the interval between the medium-pressure groove and the first high-pressure groove satisfies the following condition: the back pressure space passing through the space communicates with at least one of the intermediate pressure tank and the first high pressure tank.
Further, the interval between the first high pressure groove and the second high pressure groove satisfies the following condition: the back pressure space passing through the gap communicates with at least one of the first high pressure groove and the second high pressure groove.
Further, when the number of the second high-pressure grooves is two or more, the interval between two adjacent second high-pressure grooves satisfies the following condition: the back pressure space passing through the space communicates with at least one of the two second high pressure grooves.
Further, the throttling structure is a gap between a rotating shaft and a bearing in the rotary vane compressor.
Furthermore, the intermediate pressure groove is formed in the inner side end face of at least one of the pair of bearings of the rotary vane compressor.
Further, the first high pressure groove is formed in the inner side end face of at least one of the pair of bearings of the rotary vane compressor.
Further, the second high pressure groove is formed in the inner side end face of at least one of the pair of bearings of the rotary vane compressor.
A method of backpressure optimization for a rotary vane compressor, comprising:
at least one middle pressure groove, a first high pressure groove and at least one second high pressure groove are sequentially arranged on at least one bearing of the rotary vane compressor along the rotation direction of a rotor of the rotary vane compressor, and media in back pressure spaces on the inner sides of the vane grooves are gradually pressed to high pressure by the first high pressure grooves.
Through the technical scheme of the utility model, can realize following technological effect:
the utility model discloses a rotary vane compressor offers well indent, first high-pressure groove and second high-pressure groove at the terminal surface in the bearing, and structural design is reasonable, and simple easy the implementation can solve the problem that the backpressure space pressure of blade suddenly drops to prevent that the blade from breaking away from the interior wall of cylinder, avoid the blade vibration and the vibration noise that from this cause, reduce the leakage between the compression chamber of blade both sides.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a rotary vane compressor;
FIG. 2 is a schematic view of the transition of the vane from the intermediate pressure chamber to the first high pressure chamber;
reference numerals: 1. a medium pressure groove; 2. a bearing; 3. a cylinder chamber; 4. a rotating shaft; 5. a rotor; 6. an exhaust port; 7. a first high pressure tank; 8. a second high pressure tank; 9. a blade groove; 10. a back pressure space; 11. a first high pressure port; 12. a second high pressure port; 13. a blade; 14. a cylinder body.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are the directions or positional relationships indicated on the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. This embodiment is written in a progressive manner.
As shown in fig. 1, in a rotary vane compressor, in a rotation direction of a rotor 5 of the rotary vane compressor, there are sequentially provided: the intermediate pressure groove 1 is arranged on the end surface of the inner side of a bearing 2 of the rotary vane compressor close to a cylinder chamber 3 and is communicated with an exhaust port 6 through a throttling structure; a first high pressure groove 7 and at least one second high pressure groove 8 which are arranged on the bearing 2 of the rotary vane compressor and close to the inner side end surface of the cylinder chamber 3 and are communicated with the exhaust port 6 through hole positions; the first high-pressure groove 7 communicates with at most one back-pressure space 10 inside the vane groove 9.
In the utility model, the high-pressure oil at each exhaust port 6 of the rotary vane compressor flows to the medium pressure tank 1 through the internal throttling structure, the first high-pressure hole 11 is arranged in the first high-pressure tank 7, the first high-pressure hole 11 is communicated with each exhaust port 6, the circulating oil at the exhaust port 6 is supplied to the first high-pressure tank 7 through the first high-pressure hole 11, and the pressure of the first high-pressure tank 7 is maintained to be approximately equal to the exhaust pressure; a second high-pressure hole 12 is opened in the second high-pressure groove 8, the second high-pressure hole 12 communicates with each exhaust port 6, and the circulating oil in the exhaust port 6 is supplied to the second high-pressure groove 8 through the second high-pressure hole 12, so that the pressure in the second high-pressure groove 8 is maintained substantially equal to the exhaust pressure.
The first high pressure groove 7 plays the most important role, if there is a situation that two adjacent vanes 13 are simultaneously communicated with the first high pressure groove 7, when the back pressure space 10 of the following vane 13 is changed to a state of being communicated with the first high pressure groove 7, because the pressure of the back pressure space 10 of the following vane 13 is the medium pressure, the pressure of the back pressure space 10 of the preceding vane 13 is suddenly reduced to be lower than the pressure supplied to the first high pressure groove 7, therefore, there is a possibility that the preceding vane 13 cannot be tightly attached to the inner wall surface of the cylinder 14, thereby causing the vane 13 to vibrate, further reducing the efficiency and stability of the device, and increasing the vibration noise. The utility model discloses in, first high-pressure groove 7 communicates with a backpressure space 10 at most, realizes the control of alpha angle in the accessible picture, plays the middling pressure to the excessive effect of high pressure, only carries out the conversion of pressure to a backpressure space 10 at every turn, has avoided the influence to preorder blade 13. Simultaneously, above-mentioned structural style also arranges especially that multi-blade 13 arranges for blade 13 provides bigger space, has only demonstrated the form that sets up three blades 13 in this embodiment, only does the utility model discloses an embodiment is not the restriction the utility model discloses blade 13 quantity only can be for three, and other quantity also all are in the utility model discloses a protection within range.
As a preference of the above embodiment, the intermediate pressure groove 1 communicates with the back pressure space 10 inside the vane groove 9 of the vane compressor in the intake process and the compression process; the first high pressure groove 7 communicates with the back pressure space 10 at the later stage of the compression process, and the second high pressure groove 8 communicates with the back pressure space 10 at the exhaust process.
The middle pressure groove 1 is communicated with the back pressure space 10 in the early stages of the air suction process and the compression process, and provides middle pressure back pressure acting force to the blades 13 in the stage; the first high pressure groove 7 is communicated with the back pressure space 10 at the later stage of the compression process, and provides high pressure back pressure acting force to the blade 13 at the later stage; the second high pressure groove 8 communicates with the back pressure space 10 during the exhaust process, providing a high pressure back pressure force to the vane 13 at this stage. The vanes 13 have different requirements for the back pressure forces at different corners of the rotation. In the earlier stages of the air suction process and the compression process, the lower back pressure acting force can ensure that the blade 13 is tightly attached to the inner wall surface of the cylinder body 14; in the later stage of the compression process and the exhaust process, a high back pressure force is required to ensure that the vane 13 is tightly attached to the inner wall surface of the cylinder 14. Therefore, the utility model provides a match combination's middling pressure groove 1, first hyperbaric chamber 7 and second hyperbaric chamber 8 both can guarantee that blade 13 does not deviate from 14 internal faces of cylinder body, have avoided the too big blade 13's that too big backpressure effort caused friction loss again.
As a preference of the above embodiment, as shown in fig. 2, the interval between the intermediate pressure tank 1 and the first high pressure tank 7 satisfies the following condition: the back pressure space 10 passing through the gap is at least communicated with one of the medium pressure groove 1 and the first high pressure groove 7, and comprises three conditions of being communicated with the medium pressure groove 1, being communicated with the medium pressure groove 1 and the first high pressure groove 7 simultaneously, and being communicated with the first high pressure groove 7 only, so that the situation that the back pressure space 10 is not communicated with the medium pressure groove 1 and the first high pressure groove 7 can be avoided, because if the situation occurs, the volume of the closed back pressure space 10 is reduced, the pressure is increased, the acting force of the inner wall surfaces of the blade 13 and the cylinder body 14 is increased, and the friction power consumption of the blade 13 is further increased.
For the same purpose, the interval between the first high-pressure groove 7 and the second high-pressure groove 8 satisfies the following condition: the back pressure space 10 passing through the gap communicates with at least one of the first high pressure groove 7 and the second high pressure groove 8.
When the number of the second high-pressure grooves 8 is two or more, the interval between two adjacent second high-pressure grooves 8 satisfies the following condition: the back pressure space 10 passing through the gap communicates with at least one of the two second high pressure grooves 8.
As a preferable example of the above embodiment, the throttle structure is a gap between the rotary shaft 4 and the bearing 2 in the vane rotary compressor. Here, the pressure ratio decreased by the throttling is low, and the pressure in the intermediate pressure tank 1 is maintained lower than the discharge pressure and higher than the suction pressure.
In a pair of bearings 2 of the rotary vane compressor, at least one of the inner side end surfaces is provided with a medium pressure groove 1, at least one of the inner side end surfaces is provided with a first high pressure groove 7, and at least one of the inner side end surfaces is provided with a second high pressure groove 8. Above-mentioned circumstances all can satisfy the utility model discloses a technical purpose can specifically select according to the structural style of product, only sets up a middling pressure chamber and a second hyperbaric chamber on a bearing preferentially, when satisfying utility model needs, has saved the processing step, has reduced the possibility of revealing, and of course, above-mentioned scheme does not show other quantity's middling pressure groove 1 and second hyperbaric chamber 8 not in the utility model discloses a protection within range.
When the exhaust ports 6 are provided with two or more, the medium of each exhaust port 6 is merged and then communicated with the first high-pressure hole 11 and the second high-pressure hole 12, thereby ensuring the stability of the medium.
A method of backpressure optimization for a rotary vane compressor, comprising: at least one medium pressure groove 1, a first high pressure groove 7 and at least one second high pressure groove 8 are sequentially arranged on a bearing 2 of the rotary vane compressor along the rotation direction of a rotor 5 of the rotary vane compressor, and a medium in a backpressure space 10 on the inner side of a vane groove 9 is gradually pressed to be excessive from the medium through the first high pressure groove 7.
The present embodiment has the following advantages:
the utility model discloses a rotary vane compressor offers well indent 1, first hyperbaric groove 7 and second hyperbaric groove 8 at the bearing inner end face, and structural design is reasonable, and simple easy the implementation can solve the problem that 10 pressures in the backpressure space of blade 13 fall suddenly to prevent that blade 13 from breaking away from 14 internal faces of cylinder body, avoid the blade vibration and the vibration noise that cause from this, reduce the leakage between the compression chamber of blade both sides.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A rotary vane compressor is characterized in that, in the rotation direction of a rotor (5) of the rotary vane compressor, there are sequentially provided:
the intermediate pressure groove (1) is arranged on the end surface of the inner side of a bearing (2) of the rotary vane compressor, which is close to the cylinder chamber (3), and is communicated with the exhaust port (6) through a throttling structure;
the first high-pressure groove (7) and the at least one second high-pressure groove (8) are arranged on the end surface of the inner side, close to the cylinder chamber (3), of the bearing (2) of the rotary vane compressor and are communicated with the exhaust port (6) through hole positions;
the first high-pressure groove (7) is communicated with a back pressure space (10) at the inner side of at most one blade groove (9);
the middle pressure groove (1) is communicated with a back pressure space (10) at the inner side of a blade groove (9) of the rotary vane compressor in the earlier stages of the air suction process and the compression process; the first high-pressure groove (7) is communicated with the back pressure space (10) at the later stage of the compression process, and the second high-pressure groove (8) is communicated with the back pressure space (10) in the exhaust process;
the throttling structure is a gap between a rotating shaft (4) and a bearing (2) in the rotary vane compressor.
2. Rotary vane compressor according to claim 1, characterized in that the spacing between the intermediate pressure groove (1) and the first high pressure groove (7) satisfies the following condition: the back pressure space (10) passing through the gap communicates with at least one of the intermediate pressure tank (1) and the first high pressure tank (7).
3. Rotary vane compressor according to claim 1, characterized in that the spacing between the first high pressure groove (7) and the second high pressure groove (8) satisfies the following condition: the back pressure space (10) passing through the gap communicates with at least one of the first high pressure groove (7) and the second high pressure groove (8).
4. The rotary vane compressor according to claim 1, wherein when two or more second high pressure grooves (8) are provided, an interval between adjacent two second high pressure grooves (8) satisfies the following condition: the back pressure space (10) passing through the gap communicates with at least one of the two second high pressure grooves (8).
5. The rotary vane compressor according to any one of claims 1 to 4, wherein at least one of the pair of bearings (2) of the rotary vane compressor has the intermediate pressure groove (1) formed in an inner end surface thereof.
6. The rotary vane compressor according to any one of claims 1 to 4, wherein the first high pressure groove (7) is opened at an inner end surface of at least one of the pair of bearings (2) of the rotary vane compressor.
7. The rotary vane compressor according to any one of claims 1 to 4, wherein the second high pressure groove (8) is opened at an inner end surface of at least one of the pair of bearings (2) of the rotary vane compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021972218.0U CN213205971U (en) | 2020-09-10 | 2020-09-10 | Rotary vane compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021972218.0U CN213205971U (en) | 2020-09-10 | 2020-09-10 | Rotary vane compressor |
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| Publication Number | Publication Date |
|---|---|
| CN213205971U true CN213205971U (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021972218.0U Active CN213205971U (en) | 2020-09-10 | 2020-09-10 | Rotary vane compressor |
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|---|---|
| CN (1) | CN213205971U (en) |
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- 2020-09-10 CN CN202021972218.0U patent/CN213205971U/en active Active
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