CN209164090U - Variable-capacity control mechanism and compressor - Google Patents
Variable-capacity control mechanism and compressor Download PDFInfo
- Publication number
- CN209164090U CN209164090U CN201821494825.3U CN201821494825U CN209164090U CN 209164090 U CN209164090 U CN 209164090U CN 201821494825 U CN201821494825 U CN 201821494825U CN 209164090 U CN209164090 U CN 209164090U
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- China
- Prior art keywords
- pin
- groove
- sealing ring
- control mechanism
- capacity control
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- 230000007246 mechanism Effects 0.000 title claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 67
- 239000003507 refrigerant Substances 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract 1
- 230000009471 action Effects 0.000 description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
- 241001136800 Anas acuta Species 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- Compressor (AREA)
Abstract
The utility model provides a variable volume control mechanism relates to compressor technical field. The method comprises the following steps: the flange, be provided with the cotter hole on the flange, the cotter downthehole pin that is equipped with, cotter hole department still is equipped with seal assembly, seal assembly is used for sealing connection the pin with the cotter hole. The utility model provides a varactor control mechanism, seal assembly can increase the leakproofness between cotter hole and the pin, and the high-pressure refrigerant gas of avoiding cotter head portion can be by the clearance between pin lateral wall and the cotter hole inside wall and the plane of pin afterbody and the clearance between the apron surface, and the condition of breathing in the intracavity and leaking through pin afterbody pressure control passageway to the cylinder takes place.
Description
Technical field
The utility model relates to compressor fields, in particular to a kind of variable capacity control mechanism and compressor.
Background technique
Positive displacement compressor is switched over by the state to transfiguration cylinder, is realized the adjusting of work discharge capacity, can be improved compression
Machine improves the efficiency under compressor low load condition to the adaptability of system condition.Transfiguration cylinder working state in positive displacement compressor
Switching mode be by control pin head and tail portion pressure difference control pin movement realization.
Using above-mentioned transfiguration switching mode, when transfiguration cylinder working, pin head is high pressure, tail portion is low pressure.At this point,
Under the action of pressure difference, the higher pressure refrigerant gas of pin head can by between pin lateral wall and pin hole inner sidewall gap and
Gap between the plane and lid surface of pin tail portion, by pin tail portion pressure control channel to cylinder air-breathing endoluminal leak.
Higher pressure refrigerant gas is in cylinder air-breathing intraluminal inflation, so that the refrigerant gas amount of actual cycle is reduced, volumetric efficiency is reduced,
Compressor output decline, and repeated compression reveals higher pressure refrigerant gas, will lead to consumption power and increases, so that pressure
The decline of contracting machine performance.
Utility model content
The utility model provides a kind of variable capacity control mechanism and compressor, it is intended to improve in existing compressor pin hole with
The low problem of leakproofness between pin.
The utility model is realized in this way:
A kind of variable capacity control mechanism, comprising: flange is provided with pin hole on the flange, is equipped with pin in the pin hole
It follows closely, seal assembly is additionally provided at the pin hole, the seal assembly is for being tightly connected the pin and the pin hole.
Further, in the utility model preferred embodiment, the variable capacity control mechanism further includes cover board, the lid
Plate is set to the bottom of the flange, and the seal assembly is set to the junction of the pin hole Yu the cover board.
Further, in the utility model preferred embodiment, the seal assembly includes the first groove and is set to
The first sealing ring in first groove, first groove is set on the top surface of the cover board and position and the pin
Hole is corresponding, and first groove is circular ring shape and is open towards the flange that the bottom surface of the pin can be with described first
The top surface of sealing ring abuts.
Further, in the utility model preferred embodiment, the seal assembly further includes ring-spring, and described
Cricoid card slot is offered on the inner sidewall of one sealing ring, the ring-spring is set in the card slot.
Further, in the utility model preferred embodiment, the seal assembly includes the second groove and is set to
The second sealing ring in second groove, second groove are set on the inner sidewall of the pin hole, and described second is recessed
Slot be circular ring shape and opening towards the pin lateral wall.
Further, in the utility model preferred embodiment, the internal diameter of second sealing ring is less than the pin
The internal diameter in hole, and the internal diameter of second sealing ring is less than or equal to the outer diameter of the pin.
Further, in the utility model preferred embodiment, the seal assembly includes third groove and is set to
Third sealing ring in the third groove, the third groove are set on the lateral wall of the pin, the third groove
For circular ring shape and opening towards the pin hole inner sidewall.
Further, in the utility model preferred embodiment, the outer diameter of the third sealing ring is greater than the pin
Outer diameter, and the outer diameter of the third sealing ring be greater than or equal to the pin hole internal diameter.
Further, in the utility model preferred embodiment, the variable capacity control mechanism further includes cylinder and cover board,
The flange is located at the cylinder lower part, and the cover board is located at the flange base, and the cylinder has sliding cavity, the sliding
Intracavitary to be equipped with slide plate, the slide plate is equipped with notch corresponding with the pin；The cover board is equipped with and the pin hole
Corresponding channel.
A kind of compressor, including variable capacity control mechanism described in any of the above embodiments.
The beneficial effects of the utility model are: the variable capacity control mechanism that the utility model obtains by above-mentioned design, sealing
Component can increase the leakproofness between pin hole and pin, avoid the higher pressure refrigerant gas of pin head can be by the outside of pin
Gap between wall and pin hole inner sidewall and the gap between the plane and lid surface of pin tail portion pass through pin tail portion pressure
Control channel occurred to the case where cylinder air-breathing endoluminal leak.
Detailed description of the invention
It, below will be to required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore not
It should be considered as the restriction to range, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other relevant attached drawings.
Fig. 1 is a kind of structural schematic diagram of variable capacity control mechanism in embodiment 1；
Fig. 2 is the portion A enlarged drawing in Fig. 1 in embodiment 1；
Fig. 3 is a kind of schematic cross-section of first sealing ring of variable capacity control mechanism in embodiment 1；
Fig. 4 is a kind of partial schematic diagram of the cover board of variable capacity control mechanism in embodiment 1；
Fig. 5 is a kind of structural schematic diagram of variable capacity control mechanism in embodiment 2；
Fig. 6 is the portion B enlarged drawing in Fig. 5 in embodiment 2；
Fig. 7 is a kind of structural schematic diagram of variable capacity control mechanism in embodiment 3；
Fig. 8 is the portion C enlarged drawing in Fig. 7 in embodiment 4.
Icon: flange 1；Slide plate 2；Notch 21；Cover board 3；Pin 4；Spring 5；Pin hole 6；Channel 7；First groove 101；
First sealing ring 102；Ring-spring 103；Card slot 1021；Second groove 201；Second sealing ring 202；Third groove 301；Third
Sealing ring 302.
Specific embodiment
It is practical below in conjunction with this to keep the purposes, technical schemes and advantages of the utility model embodiment clearer
The technical solution in the utility model embodiment is clearly and completely described in attached drawing in novel embodiment, shows
So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.It is practical based on this
Embodiment in novel, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment is fallen within the protection scope of the utility model.Therefore, the implementation to the utility model provided in the accompanying drawings below
The detailed description of mode is not intended to limit the range of claimed invention, but is merely representative of the utility model
Selected embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative labor
Every other embodiment obtained under the premise of dynamic, fall within the protection scope of the utility model.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise " be based on the orientation or positional relationship shown in the drawings, be only for
Convenient for description the utility model and simplify description, rather than the equipment of indication or suggestion meaning or element must have specifically
Orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it
"lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to
Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above "
One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special
Sign is directly below and diagonally below the second feature including fisrt feature under the second feature " below ", " below " and " below ", or only
Indicate that first feature horizontal height is less than second feature.
Embodiment 1:
It please refers to shown in Fig. 1-Fig. 4, the present embodiment provides a kind of variable capacity control mechanisms, comprising: flange 1 is arranged on flange 1
There is pin hole 6, pin 4 is equipped in pin hole 6, seal assembly is additionally provided at pin hole 6, seal assembly is for being tightly connected pin
4 and pin hole 6.
Variable capacity control mechanism provided in this embodiment, seal assembly can increase the sealing between pin hole 6 and pin 4
Property, avoid 4 head of pin higher pressure refrigerant gas can by between 6 inner sidewall of 4 lateral wall of pin and pin hole gap and pin
The gap between 3 upper surface of plane and cover board of 4 tail portions is followed closely, is let out by 4 tail portion pressure control channel of pin into cylinder suction chamber
The case where leakage, occurs.
Further, in the present embodiment, variable capacity control mechanism further includes cylinder and cover board 3, and flange 1 is located under cylinder
Portion, cover board 3 are located at 1 bottom of flange, and cylinder has sliding cavity, and slide plate 2 is equipped in sliding cavity, and slide plate 2 is equipped with opposite with pin 4
The notch 21 answered；Cover board 3 is equipped with channel 7 corresponding with pin hole 6.4 bottom end of pin is equipped with blind hole, is equipped with spring in blind hole
5, one end of spring 5 is set in blind hole, and the other end stretches out blind hole and abuts with the top surface of cover board 3.Spring 5 can be by pin 4
It pushes up to 2 direction of slide plate.
The head of pin 4 is connected to sliding cavity, and the tail portion of pin 4 is connected to channel 7.Sliding cavity and channel 7 can be according to realities
Situation selection in border is connect with the air entry of the exhaust outlet of compressor or cylinder.Wherein, the exhaust outlet of connect compressor can be
High pressure, the air entry for connecting cylinder is low pressure.
It can be two kinds of control models when controlling pin 4；
The first are as follows: 4 head of pin is always high pressure conditions, and 4 tail portion of pin is according to demand in high pressure conditions and low pressure shape
It is switched between state.When 4 tail portion of pin is low-pressure state, pin 4 divides under the action of pressure difference with the notch 21 on slide plate 2
From keeping cylinder in running order.When the tail portion of pin 4 is high pressure conditions, pressure difference is not present in the head and tail portion of pin 4,
Pin 4 is mobile to 2 direction of slide plate under the action of spring 5, and is fastened togather with the notch 21 on slide plate 2, is in cylinder
Unloaded state.
Second are as follows: 4 tail portion of pin is always low-pressure state, and 4 head of pin is according to demand in high pressure conditions and low pressure shape
It is switched between state.When 4 head of pin is in high pressure conditions, pin 4 divides under the action of pressure difference with the notch 21 on slide plate 2
From keeping cylinder in running order.When 4 head of pin is low-pressure state, pressure difference, pin is not present in the head and tail portion of pin 4
Nail 4 is mobile to 2 direction of slide plate under the action of spring 5, and is fastened togather with the notch 21 on slide plate 2, is in cylinder and unloads
Load state.
Further, in the present embodiment, seal assembly is set to the junction of pin hole 6 Yu cover board 3.Specifically, close
It groove 101 and the first sealing ring 102 for being set in the first groove 101 that sealing assembly, which includes first, and the first groove 101 is set to lid
On the top surface of plate 3 and position is corresponding with pin hole 6, and the first groove 101 is circular ring shape and is open towards flange 1, the bottom of pin 4
The top surface that the first sealing ring 102 is capable of in face abuts.In the present embodiment, the material of the first sealing ring 102 is polytetrafluoroethylene (PTFE).
When the head of pin 4 is high pressure, and bottom is low pressure, pin 4 slides into the bottom of pin hole 6 under the action of pressure difference
Portion.At this point, the bottom surface of pin 4 is abutted with the top surface of the first sealing ring 102, make between 6 inner sidewall of 4 lateral wall of pin and pin hole
Gap is isolated with the channel 7 on cover board 3, prevents the higher pressure refrigerant gas on 4 head of pin can be by 4 lateral wall of pin and pin
Gap between 3 upper surface of plane and cover board of 4 tail portion of gap and pin between 6 inner sidewall of hole flows into the channel 7 on cover board 3
It is interior.
The outer diameter of the first sealing ring 102 is slightly larger than the outer diameter of the first groove 101, the first sealing ring 102 and first when setting
Groove 101 may be implemented to be interference fitted, and enables the first sealing ring 102 is stable to be installed in the first groove 101, is not easy to take off
From.
Further, in the present embodiment, seal assembly further includes ring-spring 103, the inner sidewall of the first sealing ring 102
On offer cricoid card slot 1021, ring-spring 103 is set in card slot 1021.In the present embodiment, by the first sealing
Ring-spring 103 is set in the card slot 1021 of circle 102, can slow down 4 bottom surface of pin when abutting with the first sealing ring 102
To the impact force of the first sealing ring 102；The elasticity of the first sealing ring 102 is also ensured in ring-spring 103, makes 4 bottom surface of pin
When abutting with 102 top surface of the first sealing ring, the top surface of the first sealing ring 102 is able to use to be fitted closely with the bottom surface with pin 4.
The present embodiment also provides a kind of compressor, including above-mentioned variable capacity control mechanism.Meanwhile pressure provided in this embodiment
Contracting machine can be the rolling rotor-type positive displacement compressor of single-stage, twin-stage or multistage.
Embodiment 2:
Referring to figure 5. shown in-Fig. 6, the present embodiment the difference from embodiment 1 is that: in the present embodiment, seal assembly packet
Including second groove 201 and the second sealing ring 202 for being set in the second groove 201, and the second groove 201 is set to pin hole 6
On inner sidewall, the second groove 201 be circular ring shape and opening towards pin 4 lateral wall.The internal diameter of second sealing ring 202 is less than pin
The internal diameter of nail hole 6, and the internal diameter of the second sealing ring 202 is less than or equal to the outer diameter of pin 4.Preferably, second sealing ring 202
Internal diameter is less than the outer diameter of pin 4.In the present embodiment, the material of the second sealing ring 202 is polytetrafluoroethylene (PTFE).
It is embodied in, and the second sealing ring 202 is embedded in the second groove 201, and the inner sidewall of the second sealing ring 202
The lateral wall for stretching out the second groove 201 and pin 4 fits closely together, since the internal diameter of the second sealing ring 202 is less than pin 4
Outer diameter, substantially increase the leakproofness between pin 4.Pin hole 6 can be isolated into two parts by the second sealing ring 202, be prevented
The higher pressure refrigerant gas that shotpin follows closely 4 heads can be by the clearance leakage between 6 inner sidewall of 4 lateral wall of pin and pin hole to cover board
At channel 7 on 3.
Further, in this embodiment the thickness of the second sealing ring 202 is slightly larger than the thickness of the second groove 201, second is close
Seal 202 and the second groove 201 are interference fitted, in the installation for keeping the second sealing ring 202 stable and the second groove 201, no
Easily it is detached from.Meanwhile the leakproofness between the second sealing ring 202 and the second groove 201 is also enhanced, avoid higher pressure refrigerant gas logical
Cross the slot leakage between the second sealing ring 202 and the second groove 201.
Embodiment 3:
Please refer to shown in Fig. 7-Fig. 8, the present embodiment the difference from embodiment 1 is that: in the present embodiment, seal assembly packet
The third sealing ring 302 for including third groove 301 and being set in third groove 301, third groove 301 are set to the outer of pin 4
On side wall, third groove 301 be circular ring shape and opening towards pin hole 6 inner sidewall.The outer diameter of third sealing ring 302 is greater than pin
The outer diameter of nail 4, and the outer diameter of third sealing ring 302 is greater than or equal to the internal diameter of pin hole 6.Preferably, third sealing ring 302
Outer diameter is greater than the internal diameter of pin hole 6.In the present embodiment, the material of third sealing ring 302 is polytetrafluoroethylene (PTFE).
It is embodied in, and third sealing ring 302 is embedded in third groove 301, and the lateral wall of third sealing ring 302
The inner sidewall for stretching out third groove 301 and pin hole 6 fits closely together, since the outer diameter of third sealing ring 302 is greater than pin
The internal diameter of nail hole 6 substantially increases the leakproofness between 6 inner sidewall of pin hole.Third sealing ring 302 can by pin hole 6 every
From for two parts, prevent the higher pressure refrigerant gas on 4 head of pin can be by between 6 inner sidewall of 4 lateral wall of pin and pin hole
At channel 7 in clearance leakage to cover board 3.
Further, in this embodiment the thickness of third sealing ring 302 is slightly larger than the thickness of third groove 301, third is close
Seal 302 and third groove 301 are interference fitted, in the installation for keeping third sealing ring 302 stable and third groove 301, no
Easily it is detached from.Meanwhile the leakproofness between third sealing ring 302 and third groove 301 is also enhanced, avoid higher pressure refrigerant gas logical
Cross the slot leakage between third sealing ring 302 and third groove 301.
It is worth noting that the embodiment of the three kinds of seal assemblies provided in embodiment 1, embodiment 2 and embodiment 3,
Two kinds can be arbitrarily chosen according to demand to be combined or three kinds while implementing.
Above description is merely a prefered embodiment of the utility model, is not intended to limit the utility model, for
For those skilled in the art, various modifications and changes may be made to the present invention.All spirit and original in the utility model
Within then, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of variable capacity control mechanism characterized by comprising flange (1) is provided with pin hole (6) on the flange (1),
Pin (4) are equipped in the pin hole (6), seal assembly are additionally provided at the pin hole (6), the seal assembly is for sealing
Connect the pin (4) and the pin hole (6).
2. variable capacity control mechanism according to claim 1, which is characterized in that the variable capacity control mechanism further includes cover board
(3), the cover board (3) is set to the bottom of the flange (1), the seal assembly be set to the pin hole (6) with it is described
The junction of cover board (3).
3. variable capacity control mechanism according to claim 2, which is characterized in that the seal assembly includes the first groove
(101) and the first sealing ring (102) for being set in first groove (101), first groove (101) are set to described
On the top surface of cover board (3) and position is corresponding with the pin hole (6), and first groove (101) is circular ring shape and opening court
To the flange (1), the bottom surface of the pin (4) can be abutted with the top surface of first sealing ring (102).
4. variable capacity control mechanism according to claim 3, which is characterized in that the seal assembly further includes ring-spring
(103), it is offered cricoid card slot (1021) on the inner sidewall of first sealing ring (102), the ring-spring (103) sets
It is placed in the card slot (1021).
5. variable capacity control mechanism according to claim 1, which is characterized in that the seal assembly includes the second groove
(201) and the second sealing ring (202) for being set in second groove (201), second groove (201) are set to described
On the inner sidewall of pin hole (6), second groove (201) be circular ring shape and opening towards the pin (4) lateral wall.
6. variable capacity control mechanism according to claim 5, which is characterized in that the internal diameter of second sealing ring (202) is small
Internal diameter in the pin hole (6), and the internal diameter of second sealing ring (202) is less than or equal to the outer diameter of the pin (4).
7. variable capacity control mechanism according to claim 1, which is characterized in that the seal assembly includes third groove
(301) and the third sealing ring (302) that is set in the third groove (301), the third groove (301) are set to described
On the lateral wall of pin (4), the third groove (301) be circular ring shape and opening towards the pin hole (6) inner sidewall.
8. variable capacity control mechanism according to claim 7, which is characterized in that the outer diameter of the third sealing ring (302) is big
Outer diameter in the pin (4), and the outer diameter of the third sealing ring (302) is greater than or equal to the internal diameter of the pin hole (6).
9. variable capacity control mechanism according to claim 1, which is characterized in that the variable capacity control mechanism further include cylinder and
Cover board (3), the flange (1) are located at the cylinder lower part, and the cover board (3) is located at the flange (1) bottom, the cylinder tool
There is sliding cavity, is equipped with slide plate (2) in the sliding cavity, the slide plate (2) is equipped with notch corresponding with the pin (4)
(21)；The cover board (3) is equipped with channel (7) corresponding with the pin hole (6).
10. a kind of compressor, which is characterized in that including the described in any item variable capacity control mechanisms of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821494825.3U CN209164090U (en) | 2018-09-12 | 2018-09-12 | Variable-capacity control mechanism and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821494825.3U CN209164090U (en) | 2018-09-12 | 2018-09-12 | Variable-capacity control mechanism and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209164090U true CN209164090U (en) | 2019-07-26 |
Family
ID=67331103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821494825.3U Active CN209164090U (en) | 2018-09-12 | 2018-09-12 | Variable-capacity control mechanism and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209164090U (en) |
-
2018
- 2018-09-12 CN CN201821494825.3U patent/CN209164090U/en active Active
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