CN107575381A - Screw compressor and air conditioner - Google Patents
Screw compressor and air conditioner Download PDFInfo
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- CN107575381A CN107575381A CN201710783545.8A CN201710783545A CN107575381A CN 107575381 A CN107575381 A CN 107575381A CN 201710783545 A CN201710783545 A CN 201710783545A CN 107575381 A CN107575381 A CN 107575381A
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- 239000012530 fluid Substances 0.000 claims abstract description 27
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 230000000994 depressogenic effect Effects 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 26
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 29
- 239000010687 lubricating oil Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 210000002421 cell wall Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000003456 pulmonary alveoli Anatomy 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The present invention, which provides a kind of screw compressor and air conditioner, screw compressor, to be included：Including support, annular wear plate and orbiter, orbiter have first end face, wear plate is arranged between support and first end face, support and wear plate and first end face is set to be collectively forming back pressure cavity, external fluid can enter back pressure cavity, to form pressure to first end face；The first seal member is provided between first end face and wear plate, to seal back pressure cavity.The contact wear when present invention can avoid the orbiter from sealing, it is ensured that the reliability of back pressure cavity sealing, and then the performance of compressor is guaranteed, while also there is the advantages of operating steadily.
Description
Technical field
The present invention relates to family's electro-technical field, more particularly to a kind of screw compressor and air conditioner.
Background technology
Screw compressor as a kind of energy-efficient compressor, compared to other compressors have efficiency is high, noise it is small with
And the advantage that reliability is high, it is widely used in commercial combined air conditioners refrigeration system.The good pump housing is sealed to scroll compression
The Performance And Reliability of machine is most important, and its pump housing sealing principle is to form a back pressure cavity in orbiter rear side, is relied on
Axial gas force pushes orbiter to fixed scroll side in back pressure cavity, so as to realize effective sealing between pump housing axial direction.
A kind of automobile-used whirlpool as disclosed in existing patent Japanese Patent No. 2007-4013730 (US6872063 U.S. Patent numbers)
Compressor back-pressure structure is revolved, by setting elastic steel sheet to be partitioned into back pressure cavity region and air-breathing alveolus in sound Pan Mifengmianchu
Domain, so as to realize reliable back pressure technology.As described in patent, the structure will realize the sealing between back pressure cavity, it is necessary first to
Pretightning force is provided by elastic steel sheet, next needs to ensure that Moving plate outer circumferential end face is brought into close contact with elastic steel sheet surface all the time,
Final realize in Moving plate effectively seals between the back pressure cavity in outside and suction muffler, forms effective back-pressure.It, which exists, uses
Middle Moving plate outer circumferential end face, which can be gradually worn out, causes sealing between back pressure cavity and suction muffler to be deteriorated, increase back pressure cavity leakage danger
Danger, it is final to influence the shortcomings that pump housing sealing causes compressor performance to decline.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of screw compressor and air conditioner, and it can avoid dynamic vortex
Contact wear when disk seals, it is ensured that the reliability of back pressure cavity sealing, and then the performance of compressor is guaranteed.
One aspect of the present invention provides a kind of screw compressor, including support, and annular wear plate and orbiter are described
Orbiter has first end face, and the wear plate is arranged between the support and the first end face, make the support and
The wear plate and the first end face are collectively forming back pressure cavity, and external fluid can enter the back pressure cavity, with to described
First end face forms pressure；
The first seal member is provided between the first end face and the wear plate, to seal the back pressure cavity.
More preferably, first seal member is annular, is provided with and first seal member in the first end face
Match first annular groove, and first seal member is arranged in the first annular groove.
More preferably, the first elastomeric element, the first elastomeric element energy are provided with the bottom of the first annular groove
Enough first seal member is overlayed on the wear plate and the first end face by the elastic force of itself.
More preferably, it is provided with the first end face from the inner circumferential center position extension of the first annular groove
Depressed part, the first annular groove is set to be connected by the depressed part with the back pressure cavity.
More preferably, first seal member is shaped as cylindrical shape, in the inwall or outer wall of first seal member
It is above circumferentially arranged to have the second annular groove, the second elastomeric element, second bullet are provided with second annular groove
Property part can overlay first seal member on the wear plate by its own resilient.
More preferably, it is provided with the first end face and matches first annular groove with first seal member, it is described
First seal member is arranged in the first annular groove；
Second elastomeric element can overlay first seal member described first annular by its own resilient
In the side wall of the bottom of groove and/or the first annular groove.
More preferably, there is second end face, the wear plate is located at the second end face and the first end on the support
Between face；
The second seal member is provided between the second end face and the wear plate, to seal the back pressure cavity.
More preferably, second seal member is annular, is provided with and second seal member in the second end face
Match the 3rd annular groove, and second seal member is arranged in the 3rd annular groove.
More preferably, the 3rd elastomeric element, the 3rd elastomeric element energy are provided with the bottom of the 3rd annular groove
Enough second seal member is overlayed on the wear plate by the elastic force of itself.
More preferably, it is provided with the second end face from the inner circumferential center position extension of the 3rd annular groove
Drainage trough, the 3rd annular groove is set to be connected by the drainage trough with the back pressure cavity.
More preferably, second seal member is shaped as cylindrical shape, in the inwall or outer wall of second seal member
It is above circumferentially arranged to have fourth annular groove, the 4th elastomeric element, the 4th bullet are provided with the fourth annular groove
Property part can overlay second seal member on the wear plate and the second end face by its own resilient.
More preferably, it is provided with the second end face and matches the 3rd annular groove with second seal member, it is described
Second seal member is arranged in the 3rd annular groove；
4th elastomeric element can rely on its own resilient to overlay second seal member in the described 3rd annular
In the side wall of the bottom of groove and/or the 3rd annular groove.
More preferably, housing, fixed scroll and the upper lid of the inner chamber with cylinder are included；
The support, the wear plate, the orbiter and the fixed scroll are arranged at the inner chamber of the housing
In, the orbiter and the fixed scroll are collectively forming compression chamber, and the upper lid and the fixed scroll are formed and can connect
Receive the discharge chamber of the high-pressure fluid of the compression chamber discharge；
The oil back chamber connected with the discharge chamber is provided with lid on described, enables the high-pressure fluid in the discharge chamber
Enough enter in the oil back chamber；
The drainage channel connected with the back pressure cavity and the oil back chamber is provided with the bracket, to by institute
The fluid in oil back chamber is stated, imports the back pressure cavity.
More preferably, the restriction allowed fluid from is provided with the bracket, and the restriction is drawn with described respectively
Circulation road connects with the oil back chamber, the fluid in the oil back chamber is entered by the restriction and the drainage channel
Enter the back pressure cavity.
More preferably, the step surface of annular is provided with the inwall of the housing, the fixed scroll is connected to described
The outer of wear plate, and the outer of the wear plate is overlayed on the step surface；
The cross sectional shape of the support is circle, and the side wall of the support is bonded with the inwall of the housing；
Between the side wall and the second end face of the support, the throttling is formed along being circumferentially provided with for the support
The arc section chamfering in portion, make to be collectively forming throttling between the restriction and the wear plate and the inwall three of the housing
Passage.
More preferably, it is interference fit between the inwall of the side wall of the support and the housing.
More preferably, it is described in the direction towards the wear plate when in the inner chamber that the support is arranged on the housing
Step surface is relative to protrude 0.05 to 0.1 millimeter with the second end face.
More preferably, the cross sectional shape of the support is circle, and the side wall of the support and the inwall of the housing paste
Close；
The restriction be in the side wall of the support along the circumferentially disposed arc section groove of the support, it is described recessed
The inwall of groove and the housing is collectively forming throttling passage.
More preferably, it is interference fit between the inwall of the side wall of the support and the housing.
Another aspect of the invention provides a kind of air conditioner, includes the screw compressor of any of the above technology technical characteristic.
The screw compressor of the offer of the present invention, use, the is provided between the first end face and the wear plate
One seal member, to prevent the technical side that the fluid in the back pressure cavity oozes out between the first end face and the wear plate
Case, contact wear when can avoid the orbiter from sealing, it is ensured that the reliability of back pressure cavity sealing, and then make the property of compressor
It can be guaranteed, while also there is the advantages of operating steadily.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the present invention, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the example structure schematic diagram of screw compressor one provided by the invention；
Fig. 2 is Fig. 1 sectional perspective diagrammatic cross-section；
Fig. 3 is the A portions enlarged diagram in Fig. 1；
Fig. 4 is the diagrammatic cross-section of second of structure of the first seal member in Fig. 1；
Fig. 5 is the orbiter structural representation in Fig. 1；
Fig. 6 is the supporting structure schematic diagram in Fig. 1；
Fig. 7 is the wear plate structural representation in Fig. 1；
Fig. 8 is second of structural representation of circulation passage；
Fig. 9 is the support partial cutaway schematic in Fig. 1；
In figure：1st, support；11st, drainage channel；12nd, second end face；121st, the 3rd annular groove；122nd, drainage trough；13rd, save
Stream portion；14th, the second pod apertures；15th, transition passage；2nd, wear plate；21st, the first pod apertures；3rd, orbiter；31st, first end face；
311st, first annular groove；312nd, depressed part；4th, fixed scroll；41st, flow-guiding channel；5th, back pressure cavity；51st, compression chamber；52nd, it is vented
Chamber；53rd, oil back chamber；531st, it is vented oil seal；532nd, oil return pond；6th, the first seal member；61st, the first elastomeric element；62nd, second
Annular groove；63rd, the second elastomeric element；7th, the second seal member；71st, the 3rd elastomeric element；8th, housing；81st, step surface；9th, on
Lid；10th, throttling passage.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described corresponding accompanying drawing.Obviously, described embodiment is only the present invention one
Section Example, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out under the premise of creative work the every other embodiment obtained, belong to the scope of protection of the invention.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use
Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except illustrating herein or
Order beyond those of description is implemented.
As shown in Figure 1, 2, 3, a kind of screw compressor, including support 1, annular wear plate 2 (can be specifically annulus
Shape) and orbiter 3, orbiter 3 there is first end face 31, wear plate 2 is arranged between support 1 and first end face 31, made
Support 1 and wear plate 2 and first end face 31 are collectively forming back pressure cavity 5, and external fluid can enter back pressure cavity 5, with to
End face 31 forms pressure, the first seal member 6 is provided between first end face 31 and wear plate 2, to seal back pressure cavity
5.Using such technical scheme, avoid producing contact wear between wear plate 2 during the sealing of orbiter 3, it is ensured that the back of the body
The reliability for pressing chamber 5 to seal, and then the fluid in back pressure cavity 5 is provided orbiter 3 stable pressure, it ensure that pressure
The performance of contracting machine, while the pressure by the fluid in back pressure cavity 5 to orbiter 3, can be suspended in orbiter 3 wear-resisting
It is now contactless state between orbiter 3 and wear plate, orbiter 3 operates more steady on piece 2.Need what is illustrated
It is that the first seal member 6 uses wear-resistant material to make to increase the service life.
Specifically, the first seal member 6 is annular, is specifically as follows annular, as shown in Figure 2,3, 4, first end face 31
On be provided with and match first annular groove 311 with the first seal member 6, the first seal member 6 is arranged on first annular groove
In 311.The accuracy of the sealing station of the first seal member 6 can so be ensured, and then improve sealing effectiveness.
More preferably, the first elastomeric element 61 is provided with the bottom of first annular groove 311, the first elastomeric element 61 can
The first seal member 6 is overlayed on wear plate 2 by the elastic force of itself.Wherein the first elastomeric element 61 can be waveform bullet
Spring, when being not limited to this, acted on by the elastic force of the first elastomeric element 61 and overlay the first seal member 6 on wear plate 2, energy
Enough ensure tightly to be combined between the first seal member 6 and wear plate 2, and then improve sealing effectiveness.
More preferably, as shown in figure 5, being provided with first end face 31 from the inner circumferential center side of first annular groove 311
To the depressed part 312 of extension, first annular groove 311 is set to be connected by depressed part 312 with back pressure cavity 5.It can so incite somebody to action
Fluid in back pressure cavity 5 is entered in first annular groove 311, makes to produce pressure between the inner side and outer side of the first seal member 6
Power is poor, the first seal member 6 by the pressure differential and the tension of itself, can with the cell wall of first annular groove 311 with
And wear plate 2 is brought into close contact, and then enhance sealing effectiveness.
The structure of first seal member 6 can use second of structure, as shown in figure 4, using second of structure, i.e., first
Seal member 6 is shaped as cylindrical shape, circumferentially arranged on the inwall or outer wall of the first seal member 6 to have the second annular groove
62, it is provided with the second elastomeric element 63 in the second annular groove 62, the second elastomeric element 63 can rely on its own resilient by the
One seal member 6 is overlayed on wear plate 2 and first end face 31.When being provided with first end face 31 and the phase of the first seal member 6
First annular groove 311 is matched, and the second elastomeric element 63 when the first seal member 6 is arranged in first annular groove 311
The first seal member 6 can be overlayed in the bottom of first annular groove 311 and/or first annular groove by its own resilient
In 311 side wall.The first seal member 6 can be so set more may be used the sealing effectiveness between first end face 31 and wear plate 2
Lean on.
Further, as shown in Fig. 1,2,3,6, there is second end face 12 on support 1, wear plate 2 is located in second end face
Between 12 and first end face 31, the second seal member 7 is provided between second end face 12 and wear plate 2, to seal back pressure cavity
5.It can so be sealed, ensure that close with back pressure cavity 5 simultaneously by the first seal member 6 and the second seal member 7 simultaneously
Seal effect.
Specifically, the second seal member 7 is annular, is specifically as follows annular, as shown in Figure 2 and Figure 5, second end face 12
On be provided with and match the 3rd annular groove 121 with the second seal member 7, the second seal member 7 is arranged on the 3rd annular groove
In 121.The accuracy of the sealing station of the second seal member 7 can so be ensured, and then improve sealing effectiveness.
More preferably, the 3rd elastomeric element 71 is provided with the bottom of the 3rd annular groove 121, the 3rd elastomeric element 71 can
The second seal member 7 is overlayed on wear plate 2 by the elastic force of itself.Wherein the 3rd elastomeric element 71 can be waveform bullet
Spring, when being not limited to this, acted on by the elastic force of the 3rd elastomeric element 71 and overlay the second seal member 7 on wear plate 2, energy
Enough ensure tightly to be combined between the second seal member 7 and wear plate 2, and then improve sealing effectiveness.
More preferably, drawing from the inner circumferential center position extension of the 3rd annular groove 121 is provided with second end face 12
Chute 122, the 3rd annular groove 121 is set to be connected by drainage trough 122 with back pressure cavity 5.So can be by back pressure cavity 5
Fluid is entered in the 3rd annular groove 121, makes to produce pressure differential between the inner side and outer side of the second seal member 7, second is close
Part 7 is sealed by the pressure differential and the tension of itself, can be tight with the cell wall and wear plate 2 of the 3rd annular groove 121
Closely connected conjunction, and then enhance sealing effectiveness.
The structure of second seal member 7 can be identical with using second of structure of the first seal member 6, i.e. the second sealing
Second seal member 7 of part 7 is shaped as cylindrical shape, circumferentially arranged on the inwall or outer wall of the second seal member 7 to have
Four annular grooves (not shown), the 4th elastomeric element (not shown), the 4th elastic portion are provided with fourth annular groove
Part can overlay the second seal member 7 on wear plate 2 and second end face by its own resilient.Set when in second end face 12
It is equipped with and matches the 3rd annular groove 121 with second seal member 7, and the second seal member 7 is arranged on the 3rd annular
When in groove 121, the 4th elastomeric element can overlay the second seal member 7 in the 3rd annular groove 121 by its own resilient
Bottom and/or the 3rd annular groove 121 side wall on.The second seal member 7 can so be made to second end face 12 and wear-resisting
Sealing effectiveness between piece 2 is relatively reliable.
As shown in Figure 1, 2, 3, screw compressor also includes housing 8, fixed scroll 4 and the upper lid of the inner chamber with cylinder
9, support 1, wear plate 2, orbiter 3 and fixed scroll 4 are arranged in the inner chamber of housing 8, orbiter and fixed scroll 4
Compression chamber 51 is collectively forming, upper lid 9 and fixed scroll 4 form the discharge chamber for the high-pressure fluid that can receive the discharge of compression chamber 51
52, the oil back chamber 53 connected with discharge chamber 52 is provided with upper lid 9, the high-pressure fluid in discharge chamber 52 is entered oil return
In chamber 53.Be provided with support 1 can with back pressure cavity 5 and the drainage channel 11 connected of oil back chamber 53, to by oil return
The fluid of chamber 53, import back pressure cavity 5.In actual use, as shown in fig. 1, exhaust oil seal is provided with oil back chamber 53
531, and oil return pond 532 is set in the bottom of oil back chamber 53, exhaust oil seal 531 can will enter the high-pressure refrigerant of oil back chamber 53
Lubricating oil is isolated, the lubricating oil is accumulated in oil return pond 532, drainage channel 11 can connect with oil return pond 532, make oil return
Lubricating oil in pond 532 can enter back pressure cavity 5 by drainage channel 11, to enter to the part (such as bearing) in back pressure cavity 5
Row lubrication.
Further, as shown in fig. 6, being provided with the restriction 13 allowed fluid from support 1, restriction 13 is distinguished
Connected with drainage channel 11 and oil back chamber 53 (communicating position can be oil return pond 532), make the fluid of oil back chamber 53 (can specifically wrap
Include lubricating oil) back pressure cavity 5 can be entered by restriction 13 and drainage channel 11, the fluid of oil back chamber 53 is flowing through restriction 13
During with drainage channel 11, decompression can be throttled, subsequently into back pressure cavity 5.
Wherein restriction 13 can be connected as used in Fig. 6 by transition passage 15 with drainage channel 11, but simultaneously not only be limited
In this.
Specifically, the step surface 81 of annular is provided with the inwall of housing 8, fixed scroll 4 is connected to wear plate 2
Outer, and the outer of wear plate 2 is overlayed on step surface 81, the cross sectional shape of support 1 is circular, and the side wall of support 1
It is bonded with the inwall of housing 8.Between the side wall and second end face 12 of support 1, as shown in figure 5, being circumferentially provided with along support 1
The arc section chamfering of restriction 13 is formed, makes to be collectively forming section between restriction 13 and wear plate 2 and the inwall three of housing 8
Circulation road 10.Now drainage channel 11 can be connected to the side of restriction 13 by transition passage 15.In actual fabrication, need
The section of throttling passage 10 is fabricated to the entrance sufficiently small, the fluid so discharged from oil back chamber 53 passes through throttling passage 10
During back pressure cavity 5, the meeting of throttling passage 10 convection body forms larger circulating resistance, to reduce the pressure of fluid.
Because throttling passage 10 is by being collectively forming, propping up between the inwall three of restriction 13 and wear plate 2 and housing 8
Interference fit can be used between the side wall of frame 1 and the inwall of housing 8, to ensure the sealing of throttling passage 10.
Specifically, as shown in fig. 7, position corresponding with restriction 13 on wear plate 2 is provided with the first pod apertures 21,
The first pod apertures can either be made to be connected with throttling passage 10, be provided with flow-guiding channel 41 on fixed scroll 4, the one of flow-guiding channel 41
End be connected with oil back chamber 53 and (can specifically be connected to oil return pond 532), the other end is connected in the first pod apertures 21, with realize and
The connection of throttling passage 10.
When in the inner chamber that support 1 is arranged on housing 8, in the direction towards wear plate 2, step surface 81 is relative with the second end
Face 12 protrudes 0.05 to 0.1 millimeter, can so ensure that the outer of wear plate 2 tightly engages with step surface 81, and then improve
The sealing of throttling passage 10.
The present embodiment additionally provides second of structure type of throttling passage 10, as shown in Figure 8 and Figure 9, the section of support 1
Circle is shaped as, and the side wall of support 1 is bonded with the inwall of housing 8；Restriction 13 is along support 1 in the side wall of support 1
Circumferentially disposed arc section groove, the inwall of groove and housing 8 is collectively forming throttling passage 10.Specifically, the side wall of support 1
It is interference fit between the inwall of housing 8, to ensure the sealing of throttling passage 10.
Specifically, as shown in Figure 8,9, the second pod apertures 14 that can be connected with groove, quiet vortex are provided with support 1
Flow-guiding channel 41 is provided with disk 4, one end of flow-guiding channel 41 is connected with compression chamber 51, and the other end is connected to the second pod apertures 14
On.It should be noted that the other end of flow-guiding channel 41 is connected in the second pod apertures 14, can both use by wear plate 2
The first pod apertures 21 set connect, and can also use and gap (figure is to show) is set on wear plate 2, and make the second pod apertures
14 and the mode corresponding with the gap of flow-guiding channel 41 connect, can also use and the diameter of wear plate 2 is made smaller, make resistance to
The second pod apertures 14 and flow-guiding channel 41 are not blocked in grinding 2, the mode for making the second pod apertures 14 be connected with flow-guiding channel 41, now
The outer of wear plate 2 is not between fixed scroll 4 and step surface 81, i.e., fixed scroll 4 does not press the outer of wear plate 2
It is attached on step surface 81.
To realize that goal of the invention another aspect of the invention provides a kind of air conditioner, include the scroll compression of above example description
Contracting machine.
Contact wear when above example enables the invention to avoid the orbiter seal, it is ensured that back pressure cavity sealing
Reliability, and then the performance of compressor is guaranteed, while also there is the advantages of operating steadily.
Embodiments of the invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included within scope of the presently claimed invention.
Claims (20)
- A kind of 1. screw compressor, it is characterised in that：Including support (1), annular wear plate (2) and orbiter (3), the orbiter (3) have first end face (31), The wear plate (2) is arranged between the support (1) and the first end face (31), makes the support (1) and described wear-resisting Piece (2) and the first end face (31) are collectively forming back pressure cavity (5), and external fluid can enter the back pressure cavity (5), with right The first end face (31) forms pressure；The first seal member (6) is provided between the first end face (31) and the wear plate (2), to seal the back of the body Press chamber (5).
- 2. screw compressor according to claim 1, it is characterised in that：First seal member (6) is annular, is provided with and the first seal member (6) phase on the first end face (31) First annular groove (311) is matched, first seal member (6) is arranged in the first annular groove (311).
- 3. screw compressor according to claim 2, it is characterised in that：The bottom of the first annular groove (311) is provided with the first elastomeric element (61), first elastomeric element (61) First seal member (61) can be overlayed on the wear plate (2) by the elastic force of itself.
- 4. screw compressor according to claim 2, it is characterised in that：It is provided with the first end face (31) from the recessed of the inner circumferential center position extension of the first annular groove (311) Fall into portion (312), the first annular groove (311) is connected by the depressed part (312) with the back pressure cavity (5).
- 5. screw compressor according to claim 1, it is characterised in that：First seal member (6) is shaped as cylindrical shape, along week on the inwall or outer wall of first seal member (6) To the second annular groove (62) is provided with, the second elastomeric element (63) is provided with second annular groove (62), it is described Second elastomeric element (63) can overlay first seal member (6) in the wear plate (2) and institute by its own resilient State in first end face.
- 6. screw compressor according to claim 5, it is characterised in that：It is provided with the first end face (31) and matches first annular groove (311) with first seal member (6), it is described First seal member (6) is arranged in the first annular groove (311)；Second elastomeric element (63) can overlay first seal member (6) in first ring by its own resilient In the side wall of the bottom of connected in star (311) and/or the first annular groove (311).
- 7. screw compressor according to claim 1, it is characterised in that：There is second end face (12), the wear plate (2) is located at the second end face (12) and described on the support (1) Between first end face (31)；The second seal member (7) is provided between the second end face (12) and the wear plate (2), to seal the back of the body Press chamber (5).
- 8. screw compressor according to claim 7, it is characterised in that：Second seal member (7) is annular, is provided with and the second seal member (7) phase on the second end face (12) The 3rd annular groove (121) is matched, second seal member (7) is arranged in the 3rd annular groove (121).
- 9. screw compressor according to claim 8, it is characterised in that：The 3rd elastomeric element (71), the 3rd elastomeric element (71) are provided with the bottom of the 3rd annular groove (121) Second seal member (7) can be overlayed on the wear plate (2) by the elastic force of itself.
- 10. screw compressor according to claim 8, it is characterised in that：Drawing from the inner circumferential center position extension of the 3rd annular groove (121) is provided with the second end face (12) Chute (122), the 3rd annular groove (121) is set to be connected by the drainage trough (122) with the back pressure cavity (5).
- 11. screw compressor according to claim 7, it is characterised in that：Second seal member (7) is shaped as cylindrical shape, along week on the inwall or outer wall of second seal member (7) To fourth annular groove is provided with, the 4th elastomeric element, the 4th elastomeric element are provided with the fourth annular groove Second seal member (7) can be overlayed on the wear plate (2) and the second end face by its own resilient.
- 12. screw compressor according to claim 11, it is characterised in that：It is provided with the second end face (12) and matches the 3rd annular groove (121) with second seal member (7), it is described Second seal member (7) is arranged in the 3rd annular groove (121)；It is recessed in the described 3rd annular that 4th elastomeric element can rely on its own resilient to overlay second seal member (7) In the side wall of the bottom of groove (121) and/or the 3rd annular groove (121).
- 13. according to the screw compressor described in claim 1 to 12 any one, it is characterised in that：Also include the housing (8), fixed scroll (4) and upper lid (9) of the inner chamber with cylinder；The support (1), the wear plate (2), the orbiter (3) and the fixed scroll (4) are arranged at the shell In the inner chamber of body (8), the orbiter (3) and the fixed scroll (4) are collectively forming compression chamber (51), the upper lid (9) The discharge chamber (52) for the high-pressure fluid that can receive the compression chamber (51) discharge is formed with the fixed scroll (4)；Covered on described on (9) and be provided with the oil back chamber (53) connected with the discharge chamber (52), made in the discharge chamber (52) High-pressure fluid can enter the oil back chamber (53) in；Being provided with the support (1) can lead to the drainage connected of the back pressure cavity (5) and the oil back chamber (53) Road (11), by the fluid in the oil back chamber (53), to import the back pressure cavity (5).
- 14. screw compressor according to claim 13, it is characterised in that：The restriction (13) allowed fluid from is provided with the support (1), the restriction (13) is drawn with described respectively Circulation road (11) connects with the oil back chamber (53), the fluid in the oil back chamber (53) is passed through the restriction (13) Enter the back pressure cavity (5) with the drainage channel (11).
- 15. screw compressor according to claim 13, it is characterised in that：The step surface (81) of annular is provided with the inwall of the housing (8), the fixed scroll (4) is connected to described resistance to The outer of (2) is ground, and the outer of the wear plate (2) is overlayed on the step surface (81)；The cross sectional shape of the support (1) is circle, and the side wall of the support (1) is bonded with the inwall of the housing (8)；Between the side wall and the second end face (12) of the support (1), institute is formed along being circumferentially provided with for the support (1) The arc section chamfering of restriction (13) is stated, makes the restriction (13) and the wear plate (2) and the inwall of the housing (8) Throttling passage (10) is collectively forming between three.
- 16. screw compressor according to claim 15, it is characterised in that：It is interference fit between the side wall of the support (1) and the inwall of the housing (8).
- 17. screw compressor according to claim 15, it is characterised in that：When in the inner chamber that the support (1) is arranged on the housing (8), in the direction towards the wear plate (2), described Terrace (81) is relative to protrude 0.05 to 0.1 millimeter with the second end face (12).
- 18. screw compressor according to claim 13, it is characterised in that：The cross sectional shape of the support (1) is circle, and the side wall of the support (1) is bonded with the inwall of the housing (8)；The restriction (3) be in the side wall of the support (1) along the circumferentially disposed arc section groove of the support (1), The inwall of the groove and the housing (8) is collectively forming throttling passage (10).
- 19. screw compressor according to claim 18, it is characterised in that：It is interference fit between the side wall of the support (1) and the inwall of the housing (8).
- A kind of 20. air conditioner, it is characterised in that：Including the screw compressor described in claim 1 to 19 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710783545.8A CN107575381A (en) | 2017-09-04 | 2017-09-04 | Screw compressor and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710783545.8A CN107575381A (en) | 2017-09-04 | 2017-09-04 | Screw compressor and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107575381A true CN107575381A (en) | 2018-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710783545.8A Pending CN107575381A (en) | 2017-09-04 | 2017-09-04 | Screw compressor and air conditioner |
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| Country | Link |
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| CN (1) | CN107575381A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090527A (en) * | 2021-04-19 | 2021-07-09 | 重庆超力高科技股份有限公司 | Backpressure cavity seal structure, compressor and on-vehicle air conditioning system |
| WO2024021946A1 (en) * | 2022-07-29 | 2024-02-01 | 丹佛斯（天津）有限公司 | Sealing ring and scroll compressor |
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Application publication date: 20180112 |
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