CN212928154U - Variable displacement piston compressor - Google Patents
Variable displacement piston compressor Download PDFInfo
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- CN212928154U CN212928154U CN202020487231.0U CN202020487231U CN212928154U CN 212928154 U CN212928154 U CN 212928154U CN 202020487231 U CN202020487231 U CN 202020487231U CN 212928154 U CN212928154 U CN 212928154U
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- variable displacement
- piston compressor
- displacement piston
- cylinder
- piston
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Abstract
The utility model provides a variable displacement piston compressor, variable displacement piston compressor includes: the piston is arranged in the cylinder hole in a sliding mode; the air vent penetrates through the cylinder hole, and the adjusting mechanism is movably arranged relative to the air vent and covers or exposes the air vent on a moving path. The utility model discloses in, piston compressor changes the switching of the blow vent in the jar hole through adjustment mechanism through control adjustment mechanism's removal, changes the piston from this and actually produces the capacity of compression on the jar hole in the reciprocating motion process to control the discharge capacity of compressor, thereby realize piston compressor's discharge capacity's change.
Description
Technical Field
The utility model relates to a variable displacement piston compressor.
Background
The compressor is used as a core component of an automobile air conditioning system and determines a main component of the refrigeration effect of the air conditioning system, so that the requirement on the refrigeration capacity of the compressor is high.
If the internal mechanism of compressor is convenient for realize the variable displacement, can be applied to a plurality of motorcycle types, better satisfying market requirement, better satisfying personnel's in the car travelling comfort requirement. However, in the prior art, when the piston of the piston compressor reciprocates, the distance of the suction port of the piston on the cylinder hole of the cylinder block is constant, that is, the stroke generated by the compressor is constant, that is, the displacement per revolution of the compressor is constant, thereby limiting the application of the piston compressor.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is that the discharge capacity in order to overcome prior art piston compressor is fixed, and the usage receives the restriction defect, provides a variable discharge capacity piston compressor.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
a variable displacement piston compressor, characterized in that it comprises:
the piston is arranged in the cylinder hole in a sliding mode;
the air vent penetrates through the cylinder hole, and the adjusting mechanism is movably arranged relative to the air vent and covers or exposes the air vent on a moving path.
The utility model provides a when piston reciprocating motion exhausts, control the exhaust flow according to the state of opening and shutting of air vent to control the discharge capacity of compressor, thereby realize the change of piston compressor's discharge capacity. In the exhaust process of the piston, one or more vent holes in the cylinder hole are opened, the opened vent holes are communicated with the outside, so that in the stroke when the piston moves to the position of the opened vent holes, gas is exhausted through the vent holes, gas compression is not performed, and no discharge capacity exists at the moment. After the piston passes through all the opened vent holes in the movement process, the rest vent holes are in a blocking state, the cylinder hole is closed, and the piston compresses air, so that the compressor can be adjusted to other displacement between the maximum displacement and the minimum displacement besides the maximum displacement and the minimum displacement.
Therefore, the piston compressor changes the opening and closing of the air vent on the cylinder hole through controlling the movement of the adjusting mechanism, so that the capacity of the piston actually generating compression in the reciprocating operation process on the cylinder hole is changed, the displacement of the compressor is controlled, and the change of the displacement of the piston compressor is realized.
Preferably, the number of the vent holes is plural, and the vent holes are arranged in order along the axial direction of the cylinder hole. The plurality of vent holes can realize multi-stage adjustment of the displacement. Wherein the variable displacement volume corresponding to the vent holes arrayed along the axial direction of the cylinder bore also changes with the distance along the axis of the cylinder bore.
Preferably, the adjustment mechanism moves in a direction parallel to the axis of the cylinder bore and covers or uncovers one or more of the vent holes on the path of movement. Thus, the adjustment mechanism can be covered along the axial direction of the cylinder hole. Because the displacement in the cylinder hole also changes along with the distance along the axis of the cylinder hole, the relation between the moving distance of the adjusting mechanism and the displacement changes linearly, and the displacement is controlled and adjusted conveniently.
Preferably, the number of the vent holes is multiple, and the moving path of the adjusting mechanism passes through all the vent holes and covers or exposes one or more vent holes on the moving path. The adjustment mechanism ensures that the opening and closing of all the vent holes can be controlled, thereby still ensuring that the original maximum displacement and minimum displacement can be realized.
Preferably, the variable displacement piston compressor comprises a plurality of cylinder bores, each of the cylinder bores having one or more of the vent holes disposed therein, each of the cylinder bores corresponding to one of the adjustment mechanisms.
Preferably, the variable displacement piston compressor further comprises a main shaft, each cylinder bore is circumferentially disposed on the periphery of the main shaft, wherein each adjusting mechanism is disposed in a space between the cylinder bore and the main shaft.
Preferably, each of the adjustment mechanisms is provided in a space on the periphery of each of the cylinder holes or a space between the cylinder holes.
Preferably, the adjusting mechanisms are arranged in a surrounding manner, and the centers of the adjusting mechanisms form a circular ring.
Preferably, the variable displacement piston compressor further comprises a control unit, and the control unit is connected with the adjusting mechanism and drives the adjusting mechanism to move.
Preferably, the vent hole is disposed between two extreme positions of the piston within the cylinder bore.
The utility model discloses an actively advance the effect and lie in, the utility model discloses in, piston compressor changes the switching of the blow vent in the jar hole through adjustment mechanism through control adjustment mechanism's removal, changes the piston from this and reciprocates the volume that the in-process actually produced the compression on the jar hole to control the discharge capacity of compressor, thereby realize piston compressor's the change of discharge capacity.
Drawings
Fig. 1 is an assembly sectional view of a variable displacement piston compressor according to a preferred embodiment of the present invention.
Fig. 2 is a schematic diagram of a moving position of the adjusting mechanism according to the preferred embodiment of the present invention.
Fig. 3 is a schematic view of another moving position of the adjusting mechanism according to the preferred embodiment of the present invention.
Fig. 4 is an enlarged schematic view of the adjusting mechanism and the cylinder hole portion according to the preferred embodiment of the present invention.
Fig. 5 is a schematic view of a first arrangement of an adjusting mechanism according to a preferred embodiment of the present invention.
Fig. 6 is a schematic view of a second arrangement of the adjusting mechanism according to the preferred embodiment of the present invention.
Fig. 7 is a schematic view of a third arrangement of the adjusting mechanism according to the preferred embodiment of the present invention.
Description of the reference numerals
Front cylinder head gasket 2
Exhaust valve plate 3
Front valve plate 4
Suction valve plate 5
Rear cylinder gasket 6
Inclined plate 9
Slipper 10
Piston 11
Rear cylinder gasket 13
Suction valve plate 14
Rear valve plate 15
Exhaust valve plate 16
Rear cylinder head gasket 17
Rear cover 18
Suction cup assembly 20
Pulley unit 21
Detailed Description
The present invention will be more clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1-7, the present invention discloses a variable displacement piston compressor. The operation of the variable displacement piston compressor shown in fig. 1 is: the compressor sucks low-pressure gas from an air conditioning system, compresses the low-pressure gas and discharges high-pressure gas, and each cycle needs 4 basic processes: compressing; exhausting; expanding; and (6) sucking. And (3) a compression process: the piston 11 moves from the bottom dead center, namely the position shown in fig. 2, to a certain position, the suction valve plate 14 and the exhaust valve plate 16 are both in a closed state in the process, and the pressure in the cavity gradually rises from suction to exhaust; and (3) an exhaust process: the piston 11 moves from a certain position to another certain position, in the process, the air suction valve plate 14 is closed, the air exhaust valve plate 16 is opened, the pressure in the cavity is maintained at exhaust until the piston 11 moves to the top dead center, namely the position of the piston 11 shown in the position of fig. 4; and (3) an expansion process: the piston 11 moves from a certain position to another certain position, the air suction valve plate 14 and the air discharge valve plate 16 are both closed in the process, and the pressure in the cavity is gradually reduced from air discharge to air suction due to the volume expansion; and (3) a gas suction process: the piston 11 moves from a certain position to another certain position, in the process, the suction valve plate 14 is opened, the exhaust valve plate 16 is closed, and the pressure in the cavity is maintained at suction until the piston moves to the bottom dead center, namely the position of the piston 11 shown in fig. 2.
As shown in fig. 1 to 7, the variable displacement piston compressor includes a cylinder bore 25 and a piston 11, the piston 11 is slidably disposed in the cylinder bore 25; a vent hole 26 and an adjusting mechanism 23, wherein the vent hole 26 penetrates through the cylinder hole 25, and the adjusting mechanism 23 is movably arranged relative to the vent hole 26 and covers or exposes the vent hole 26 on a moving path. The variable displacement piston compressor further comprises a control unit 24, the control unit 24 being connected to the adjustment mechanism 23 and moving the adjustment mechanism 23.
The utility model provides a when piston 11 reciprocating motion exhausts, control the exhaust flow according to the state of opening and shutting of air vent 26 to control the discharge capacity of compressor, thereby realize the change of piston compressor's discharge capacity. During the exhaust process of the piston 11, one or more vent holes 26 on the cylinder hole 25 are in the opening process, and the opened vent holes 26 are communicated with the outside, so that in the stroke when the piston 11 moves to the position of the opened vent holes 26, gas is exhausted through the vent holes 26, and therefore gas compression is not performed, and no displacement is performed. When the piston 11 moves through all the open vent holes 26, because the rest of the vent holes 26 are in a blocking state, the cylinder holes 25 are closed, and the piston 11 performs air compression, thereby enabling the compressor to be adjusted to other displacement between the maximum displacement and the minimum displacement besides the maximum displacement and the minimum displacement.
Therefore, the piston compressor controls the movement of the adjusting mechanism 23, and the adjusting mechanism 23 changes the opening and closing of the air vent on the cylinder hole 25, so that the capacity of the piston 11 actually compressed in the reciprocating operation process on the cylinder hole 25 is changed, the displacement of the compressor is controlled, and the displacement of the piston compressor is changed.
As shown in fig. 4, the number of the vent holes 26 in the present embodiment is plural, and the vent holes 26 are arranged in order along the axial direction of the cylinder hole 25. The plurality of vent holes 26 may enable multi-stage adjustment of the displacement. Here, the variable displacement corresponding to vent holes 26 aligned in the axial direction of cylinder hole 25 also changes with the distance along the axis of cylinder hole 25.
As shown in fig. 2 and 3, the adjustment mechanism 23 of the present embodiment moves in a direction parallel to the axis of the cylinder hole 25, and covers or uncovers one or more vent holes 26 on the moving path. Thereby, adjustment mechanism 23 can be covered along the axial direction of cylinder hole 25. Since the displacement in cylinder hole 25 also changes with the distance along the axis of cylinder hole 25, the relationship between the displacement distance and the displacement of adjustment mechanism 23 changes linearly, facilitating the control and adjustment of the displacement.
As shown in fig. 4, the number of the vent holes 26 is plural in the present embodiment, and the moving path of the adjustment mechanism 23 passes through all the vent holes 26, and covers or exposes one or more vent holes 26 on the moving path. The adjustment mechanism 23 ensures that the opening and closing of all the vent holes 26 can be controlled, thereby still ensuring that the original maximum and minimum displacement can be achieved.
As shown in fig. 5, 6 and 7, the variable displacement piston compressor of the present embodiment includes a plurality of cylinder bores 25, each cylinder bore 25 is provided with one or more vent holes 26, and each cylinder bore 25 corresponds to one adjustment mechanism 23. As shown in fig. 5, the variable displacement piston compressor further includes a main shaft 12, and each cylinder bore 25 is circumferentially provided on the outer periphery of the main shaft 12, wherein each adjustment mechanism 23 is provided in a space between the cylinder bore 25 and the main shaft 12.
As shown in fig. 6, each adjustment mechanism 23 is provided in a space on the periphery of each cylinder hole 25, or as shown in fig. 6, each adjustment mechanism 23 is provided in a space between cylinder holes 25. As shown in fig. 6, only 3 adjustment mechanisms 23 are required between the circumferences of the 5 cylinder bores 25 of the cylinder block. At this time, the adjusting mechanism 23 moves by the control unit 24 when the piston 11 is operated by reciprocating the vent holes 26 in the two cylinder holes 25 on opposite sides of the adjusting mechanism 23, thereby controlling the vent holes 26 in the two cylinder holes 25.
As shown in fig. 5, 6 and 7, the adjusting mechanisms 23 of the present embodiment are preferably arranged in a surrounding manner, and the centers of the adjusting mechanisms 23 form a circular ring.
In the present embodiment, the vent hole 26 is provided between two extreme positions of the piston 11 in the cylinder hole 25. I.e. the extreme position that the piston 11 can reach on the left in fig. 2 and 3, and the extreme position that the piston 11 can reach on the right in fig. 2 and 3. These two extreme positions correspond to a maximum displacement and a minimum displacement, respectively.
The utility model discloses in, piston compressor changes the switching of the blow vent in the jar hole through adjustment mechanism through control adjustment mechanism's removal, changes the piston from this and actually produces the capacity of compression on the jar hole in the reciprocating motion process to control the discharge capacity of compressor, thereby realize piston compressor's discharge capacity's change.
Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (10)
1. A variable displacement piston compressor, comprising:
the piston is arranged in the cylinder hole in a sliding mode;
the air vent penetrates through the cylinder hole, and the adjusting mechanism is movably arranged relative to the air vent and covers or exposes the air vent on a moving path.
2. The variable displacement piston compressor as claimed in claim 1, wherein the number of the vent holes is plural, and the vent holes are arranged in sequence along an axial direction of the cylinder bore.
3. A variable displacement piston compressor according to claim 2, wherein the adjustment mechanism moves in a direction parallel to the axis of the cylinder bore and covers or uncovers one or more of the vent holes on the path of movement.
4. A variable displacement piston compressor according to claim 2, wherein the number of said vent holes is plural, and the path of movement of said adjustment mechanism passes through all of said vent holes and covers or uncovers one or more of said vent holes in the path of movement.
5. The variable displacement piston compressor as claimed in claim 1, wherein the variable displacement piston compressor includes a plurality of cylinder bores, each of the cylinder bores having one or more of the vent holes disposed thereon.
6. The variable displacement piston compressor as claimed in claim 5, further comprising a main shaft, each cylinder bore disposed circumferentially about a periphery of the main shaft, wherein each adjustment mechanism is disposed in a space between the cylinder bore and the main shaft.
7. A variable displacement piston compressor as claimed in claim 5 wherein each said adjustment mechanism is located in a space peripheral to each said cylinder bore or between said cylinder bores.
8. A variable displacement piston compressor according to claim 6 or 7, wherein the adjustment mechanisms are circumferentially disposed with each other and the centres of the adjustment mechanisms form a circular ring.
9. The variable displacement piston compressor as claimed in claim 1, further comprising a control unit connected to the adjustment mechanism and moving the adjustment mechanism.
10. A variable displacement piston compressor according to claim 1, characterised in that the vent hole is provided between two extreme positions of the piston in the cylinder bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020487231.0U CN212928154U (en) | 2020-04-03 | 2020-04-03 | Variable displacement piston compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020487231.0U CN212928154U (en) | 2020-04-03 | 2020-04-03 | Variable displacement piston compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212928154U true CN212928154U (en) | 2021-04-09 |
Family
ID=75296480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020487231.0U Active CN212928154U (en) | 2020-04-03 | 2020-04-03 | Variable displacement piston compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212928154U (en) |
-
2020
- 2020-04-03 CN CN202020487231.0U patent/CN212928154U/en active Active
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