CN207513827U - Screw compressor and air conditioner - Google Patents
Screw compressor and air conditioner Download PDFInfo
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- CN207513827U CN207513827U CN201721127039.5U CN201721127039U CN207513827U CN 207513827 U CN207513827 U CN 207513827U CN 201721127039 U CN201721127039 U CN 201721127039U CN 207513827 U CN207513827 U CN 207513827U
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Abstract
The utility model provides a kind of screw compressor and air conditioner, screw compressor include：Including stent, annular wear plate and orbiter, orbiter have first end face, wear plate is arranged between stent and first end face, make stent and wear plate and first end face that back pressure cavity be collectively formed, 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.Contact wear when the utility model can avoid the orbiter from sealing, it is ensured that the reliability of back pressure cavity sealing, and then the performance of compressor is made to be guaranteed, while also have the advantages that operate steadily.
Description
Technical field
The utility model is related 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.Good pump housing sealing is to scroll compression
The Performance And Reliability of machine is most important, and pump housing sealing principle is to form a back pressure cavity in orbiter back side, is relied on
Axial gas force pushes orbiter to fixed scroll side in back pressure cavity, so as to fulfill 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 elastic steel sheet being set to be partitioned into back pressure cavity region and air-breathing alveolus in sound Pan Mifengmianchu
Domain, so as to fulfill reliable back pressure technology.As described in patent, which 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 fits closely always with elastic steel sheet surface,
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 leakproofness 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.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of screw compressor and air conditioner, can avoid moving
Contact wear when scroll plate seals, it is ensured that the reliability of back pressure cavity sealing, and then the performance of compressor is made to be guaranteed.
On the one hand the utility model provides a kind of screw compressor, including stent, annular wear plate and orbiter,
The orbiter has first end face, and the wear plate is arranged between the stent and the first end face, makes the branch
Back pressure cavity is collectively formed in frame and the wear plate and the first end face, and external fluid can enter the back pressure cavity, with right
The 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 in 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 in the first end face from the inner circumferential center position extension of the first annular groove
Recessed portion enables the first annular groove to be connected by the recessed portion with the back pressure cavity.
More preferably, the shape of first seal member is cylindrical shape, in the inner wall or outer wall of first seal member
Upper edge is circumferentially provided with second annular groove, and the second elastomeric element, second bullet are provided in the second annular groove
Property component can overlay first seal member on the wear plate by own resilient.
More preferably, it is provided in 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 own resilient
On 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 stent
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
The third that matches annular groove, second seal member are arranged in the third annular groove.
More preferably, third elastomeric element, the third elastomeric element energy are provided in the bottom of the third annular groove
Enough second seal member is overlayed on the wear plate by the elastic force of itself.
More preferably, it is provided in the second end face from the inner circumferential center position extension of the third annular groove
Drainage trough enables the third annular groove to be connected by the drainage trough with the back pressure cavity.
More preferably, the shape of second seal member is cylindrical shape, in the inner wall or outer wall of second seal member
Upper edge is circumferentially provided with fourth annular groove, and the 4th elastomeric element, the 4th bullet are provided in the fourth annular groove
Property component can overlay second seal member on the wear plate and the second end face by own resilient.
More preferably, it is provided in the second end face and matches third annular groove with second seal member, it is described
Second seal member is arranged in the third annular groove；
4th elastomeric element can rely on own resilient to overlay second seal member in third annular
On the side wall of the bottom of groove and/or the third annular groove.
More preferably, housing, fixed scroll and upper cover with cylindrical inner cavity are further included；
The stent, the wear plate, the orbiter and the fixed scroll are arranged at the inner cavity of the housing
In, compression chamber is collectively formed in the orbiter and the fixed scroll, and the upper cover and fixed scroll formation can connect
Receive the discharge chamber of the high-pressure fluid of the compression chamber discharge；
It is provided with the oil back chamber connected with the discharge chamber on the cover, enables the high-pressure fluid in the discharge chamber
Enough enter in the oil back chamber；
It is provided with the drainage channel connected with the back pressure cavity and the oil back chamber on the bracket, to by institute
The fluid in oil back chamber is stated, imports the back pressure cavity.
More preferably, it is provided with the throttle allowed fluid from the bracket, the throttle is drawn respectively with described
Circulation road is connected with the oil back chamber, enable fluid in the oil back chamber by the throttle and the drainage channel into
Enter the back pressure cavity.
More preferably, the step surface of circular ring shape is provided on the inner wall 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 stent is circle, and the side wall of the stent is bonded with the inner wall of the housing；
When having second end face on the stent, between the side wall of the stent and the second end face, along described
Stent is circumferentially provided with the arc section chamfering to form the throttle, makes the throttle and the wear plate and the shell
Throttling passage is collectively formed between the inner wall three of body.
More preferably, it is interference fit between the inner wall of the side wall of the stent and the housing.
More preferably, it is described in the direction towards the wear plate when in the inner cavity that the stent is mounted on the housing
Step surface is opposite to protrude 0.05 to 0.1 millimeter with the second end face.
More preferably, the cross sectional shape of the stent is circle, and the side wall of the stent and the inner wall of the housing paste
It closes；
Circumferentially disposed arc section groove of the throttle for stent described in the side wall upper edge in the stent, it is described recessed
Throttling passage is collectively formed in the inner wall of slot and the housing.
More preferably, it is interference fit between the inner wall of the side wall of the stent and the housing.
The another aspect of the utility model provides a kind of air conditioner, includes the scroll compression of any of the above technology technical characteristic
Machine.
The screw compressor of the offer of the utility model is used, is set between the first end face and the wear plate
There is the first seal member, with the skill that the fluid in the back pressure cavity is prevented to be oozed out between the first end face and the wear plate
Art scheme, contact wear when can avoid the orbiter from sealing, it is ensured that the reliability of back pressure cavity sealing, and then make compressor
Performance be guaranteed, while also have the advantages that operate steadily.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and forms one of the utility model
Point, the illustrative embodiments and their description of the utility model are not formed for explaining the utility model to the utility model
Improper restriction.In the accompanying drawings：
Fig. 1 is one example structure schematic diagram of screw compressor provided by the utility model；
Fig. 2 is the sectional perspective diagrammatic cross-section of Fig. 1；
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 structure diagram in Fig. 1；
Fig. 6 is the supporting structure schematic diagram in Fig. 1；
Fig. 7 is the wear plate structure diagram in Fig. 1；
Fig. 8 is second of structure diagram of circulation passage；
Fig. 9 is the stent partial cutaway schematic in Fig. 1；
In figure：1st, stent；11st, drainage channel；12nd, second end face；121st, third annular groove；122nd, drainage trough；13rd, it saves
Stream portion；14th, the second deflector hole；15th, transition passage；2nd, wear plate；21st, the first deflector hole；3rd, orbiter；31st, first end face；
311st, first annular groove；312nd, recessed portion；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, third elastomeric element；8th, housing；81st, step surface；9th, on
Lid；10th, throttling passage.
Specific embodiment
It is specific below in conjunction with the utility model to make the purpose of this utility model, technical solution and advantage clearer
Technical solutions of the utility model are clearly and completely described in embodiment and corresponding attached drawing.Obviously, described embodiment
Only it is the utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, this field
Those of ordinary skill's all other embodiments obtained without making creative work, belong to the utility model
The range of protection.
It should be noted that term " first " in the specification and claims of the utility model and above-mentioned attached drawing,
" second " etc. is the object for distinguishing similar, and specific sequence or precedence are described without being used for.It should be appreciated that in this way
The data used can be interchanged in the appropriate case, can be in addition at this so as to the embodiment of the utility model described herein
In diagram or description those other than sequence implement.
As shown in Figure 1, 2, 3, a kind of screw compressor, including stent 1, annular wear plate 2 (can be specifically annulus
Shape) and orbiter 3, orbiter 3 has first end face 31, and wear plate 2 is arranged between stent 1 and first end face 31, makes
Stent 1 and wear plate 2 and first end face 31 are collectively formed back pressure cavity 5, and external fluid can enter back pressure cavity 5, with to the
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 solution, avoid generating contact wear between wear plate 2 during the sealing of orbiter 3, it is ensured that the back of the body
The reliability that chamber 5 is pressed to seal, and then the fluid in back pressure cavity 5 is enable to provide orbiter 3 stable pressure, it ensure that pressure
The performance of contracting machine, while can be suspended in orbiter 3 wear-resisting the pressure of orbiter 3 by the fluid in back pressure cavity 5
It is at this time contactless state between orbiter 3 and wear plate on piece 2, orbiter 3 operates more steady.Need what is illustrated
It is that the first seal member 6 uses wear-resistant material to make to prolong the service life.
Specifically, the first seal member 6 is annular, is specifically as follows circular ring shape, as shown in Fig. 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.It can ensure the accuracy of 6 sealing station of the first seal member in this way, and then improve sealing effect.
More preferably, the first elastomeric element 61 is provided in 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, is acted on by the elastic force of the first elastomeric element 61 and overlays the first seal member 6 on wear plate 2, energy
Enough ensure tightly to be combined, and then improve sealing effect between the first seal member 6 and wear plate 2.
More preferably, as shown in figure 5, being provided in first end face 31 from the inner circumferential center side of first annular groove 311
To the recessed portion 312 of extension, first annular groove 311 is enable to be connected by recessed portion 312 with back pressure cavity 5.It can incite somebody to action in this way
Fluid in back pressure cavity 5 is entered in first annular groove 311, makes to generate pressure between the inner side and outer side of the first seal member 6
Force difference, 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 fits closely, and then enhances sealing effect.
Second of structure may be used in the structure of first seal member 6, as shown in figure 4, using second of structure, i.e., first
The shape of seal member 6 is cylindrical shape, and second annular groove is circumferentially provided in the inner wall or outer wall upper edge of the first seal member 6
62, it is provided with the second elastomeric element 63 in second annular groove 62, the second elastomeric element 63 can rely on own resilient by the
One seal member 6 is overlayed on wear plate 2 and first end face 31.When being provided in first end face 31 and 6 phase of the first seal member
Match first annular groove 311, 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 own resilient
On 311 side wall.Sealing effect of first seal member 6 between first end face 31 and wear plate 2 can be made more may be used in this way
It leans on.
Further, as shown in Fig. 1,2,3,6, there is second end face 12 on stent 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 be sealed, ensure that close with back pressure cavity 5 simultaneously by the first seal member 6 and the second seal member 7 simultaneously in this way
Seal effect.
Specifically, the second seal member 7 is annular, is specifically as follows circular ring shape, as shown in Fig. 2 and Fig. 5, second end face
It is provided on 12 and matches third annular groove 121 with the second seal member 7, it is recessed that the second seal member 7 is arranged on third annular
In slot 121.It can ensure the accuracy of 7 sealing station of the second seal member in this way, and then improve sealing effect.
More preferably, third elastomeric element 71 is provided in the bottom of third annular groove 121, third elastomeric element 71 can
The second seal member 7 is overlayed on wear plate 2 by the elastic force of itself.Wherein third elastomeric element 71 can be waveform bullet
Spring when being not limited to this, is acted on by the elastic force of third elastomeric element 71 and overlays the second seal member 7 on wear plate 2, energy
Enough ensure tightly to be combined, and then improve sealing effect between the second seal member 7 and wear plate 2.
More preferably, drawing from the inner circumferential center position extension of third annular groove 121 is provided in second end face 12
Chute 122 enables third annular groove 121 to be connected by drainage trough 122 with back pressure cavity 5.It in this way can will be in back pressure cavity 5
Fluid is entered in third annular groove 121, makes to generate pressure differential between the inner side and outer side of the second seal member 7, second is close
Component 7 is sealed by the pressure differential and the tension of itself, it can be tight with the cell wall and wear plate 2 of third annular groove 121
Closely connected conjunction, and then enhance sealing effect.
Second seal member, 7 structure can be identical with using second of structure of the first seal member 6, i.e. the second sealing
The shape of second seal member 7 of part 7 is cylindrical shape, and the is circumferentially provided in the inner wall or outer wall upper edge of the second seal member 7
Four annular grooves (not shown) are provided with the 4th elastomeric element (not shown), the 4th elastic portion in fourth annular groove
Part can overlay the second seal member 7 on wear plate 2 and second end face by own resilient.When in second end face 12
It is provided with and matches third annular groove 121 with second seal member 7, and the second seal member 7 is arranged on third ring
When in connected in star 121, the 4th elastomeric element can overlay the second seal member 7 in third annular groove by own resilient
On 121 bottom and/or the side wall of third annular groove 121.It can make the second seal member 7 in this way to 12 He of second end face
Sealing effect between wear plate 2 is relatively reliable.
As shown in Figure 1, 2, 3, screw compressor further includes housing 8, fixed scroll 4 and upper cover with cylindrical inner cavity
9, stent 1, wear plate 2, orbiter 3 and fixed scroll 4 are arranged in the inner cavity of housing 8, orbiter and fixed scroll 4
Compression chamber 51 is collectively formed, upper cover 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 in upper cover 9, the high-pressure fluid in discharge chamber 52 is enable to enter oil return
In chamber 53.Be provided on stent 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 imports back pressure cavity 5.In actual use, as shown in fig. 1, exhaust oil seal is provided in oil back chamber 53
531, and in 53 bottom of oil back chamber setting oil return pond 532, the high-pressure refrigerant that exhaust oil seal 531 can will enter oil back chamber 53
Lubricating oil is isolated, the lubricating oil is made to accumulate in oil return pond 532, drainage channel 11 can be connected with oil return pond 532, be made back
Lubricating oil in oil sump 532 can enter back pressure cavity 5 by drainage channel 11, with to the component (such as bearing) in back pressure cavity 5
It is lubricated.
Further, as shown in fig. 6, being provided with the throttle 13 that allows fluid from stent 1, throttle 13 is divided
It is not connected with drainage channel 11 and oil back chamber 53 (communicating position can be oil return pond 532), the fluid for making oil back chamber 53 is (specific
May include lubricating oil) back pressure cavity 5 can be entered by throttle 13 and drainage channel 11, the fluid of oil back chamber 53 is flowing through section
When stream portion 13 and drainage channel 11, decompression can be throttled, subsequently into back pressure cavity 5.
Wherein throttle 13 can be connected, but simultaneously not only limit as used in Fig. 6 by transition passage 15 with drainage channel 11
In this.
Specifically, the step surface 81 of circular ring shape is provided on the inner wall 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 stent 1 is circle, and the side of stent 1
Wall is bonded with the inner wall of housing 8.Between the side wall of stent 1 and second end face 12, as shown in figure 5, being set along the circumferential direction of stent 1
The arc section chamfering to form throttle 13 is equipped with, makes common shape between throttle 13 and wear plate 2 and the inner wall three of housing 8
Into throttling passage 10.Drainage channel 11 can be connected to the end side of throttle 13 by transition passage 15 at this time.In actual fabrication
In, the section by throttling passage 10 is needed to be fabricated to sufficiently small, the fluid discharged in this way from oil back chamber 53 passes through throttling passage 10
Entrance back pressure cavity 5 when, throttling passage 10 can convection current body form larger circulating resistance, to reduce the pressure of fluid.
Since throttling passage 10 is by being collectively formed, propping up between the inner wall three of throttle 13 and wear plate 2 and housing 8
Interference fit can be used between the side wall of frame 1 and the inner wall of housing 8, to ensure the sealing of throttling passage 10.
Specifically, as shown in fig. 7, being provided with the first deflector hole 21 with 13 corresponding position of throttle on wear plate 2,
The first deflector hole can either be made to be connected with throttling passage 10, flow-guiding channel 41 is provided on fixed scroll 4, flow-guiding channel 41
One end connect with oil back chamber 53 and (can specifically be connected to oil return pond 532), and the other end is connected in the first deflector hole 21, to realize
With the connection of throttling passage 10.
When in the inner cavity that stent 1 is mounted on housing 8, in the direction towards wear plate 2, step surface 81 is opposite and second end
Face 12 protrudes 0.05 to 0.1 millimeter, can ensure that the outer of wear plate 2 tightly engages, and then improve with step surface 81 in this way
The leakproofness 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 stent 1
Shape is circle, and the side wall of stent 1 is bonded with the inner wall of housing 8；Throttle 13 is the side wall upper edge stent 1 in stent 1
Circumferentially disposed arc section groove, throttling passage 10 is collectively formed in the inner wall of groove and housing 8.Specifically, the side wall of stent 1
It is interference fit between the inner wall of housing 8, to ensure the leakproofness of throttling passage 10.
Specifically, as shown in Figure 8,9, the second deflector hole 14 that can be connected with groove, quiet vortex are provided on stent 1
Flow-guiding channel 41 is provided on disk 4, one end of flow-guiding channel 41 is connect with compression chamber 51, and the other end is connected to the second deflector hole 14
On.It should be noted that 41 other end of flow-guiding channel is connected in the second deflector hole 14, both may be used by wear plate 2
First deflector hole 21 of upper setting connects, and can also use and gap (figure is to show) is set on wear plate 2, and make the second water conservancy diversion
Hole 14 and the mode corresponding with the gap of flow-guiding channel 41 connect, and can also use the diameter of wear plate 2 being made smaller, make
Wear plate 2 does not block the second deflector hole 14 and flow-guiding channel 41, the mode that the second deflector hole 14 is made to be connected with flow-guiding channel 41, this
When wear plate 2 outer be not between fixed scroll 4 and step surface 81, i.e., fixed scroll 4 not will wear plate 2 it is outer
Edge is overlayed on step surface 81.
To realize that the another aspect of purpose of utility model the utility model provides a kind of air conditioner, described including above example
Screw compressor.
Contact wear when above example enables the utility model avoid the orbiter from sealing, it is ensured that back pressure cavity is close
The reliability of envelope, and then the performance of compressor is made to be guaranteed, while also have the advantages that operate steadily.
The above description is only the embodiments of the present invention, is not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the right of the utility model.
Claims (20)
1. a kind of screw compressor, it is characterised in that：
Including stent (1), annular wear plate (2) and orbiter (3), the orbiter (3) have first end face (31),
The wear plate (2) is arranged between the stent (1) and the first end face (31), makes the stent (1) and described wear-resisting
Back pressure cavity (5) is collectively formed in piece (2) and the first end face (31), 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 first elastomeric element (61), first elastomeric element (61) are provided in the bottom of the first annular groove (311)
First seal member (6) 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 in the first end face (31) from the recessed of the inner circumferential center position extension of the first annular groove (311)
Concave portion (312) makes the first annular groove (311) that can be connected by the recessed portion (312) with the back pressure cavity (5).
5. screw compressor according to claim 1, it is characterised in that：
The shape of first seal member (6) is cylindrical shape, in inner wall or outer wall the upper edge week of first seal member (6)
To second annular groove (62) is provided with, the second elastomeric element (63) is provided in the 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 own resilient
It states in first end face.
6. screw compressor according to claim 5, it is characterised in that：
It is provided on 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 own resilient
On the bottom of connected in star (311) and/or the side wall of 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 positioned at the second end face (12) and described first on the stent (1)
Between 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)
Third annular groove (121) is matched, second seal member (7) is arranged in the third annular groove (121).
9. screw compressor according to claim 8, it is characterised in that：
Third elastomeric element (71), the third elastomeric element (71) are provided in the bottom of the third 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 third annular groove (121) is provided in the second end face (12)
Chute (122) makes the third annular groove (121) that can 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：
The shape of second seal member (7) is cylindrical shape, in inner wall or outer wall the upper edge week of second seal member (7)
To fourth annular groove is provided with, the 4th elastomeric element, the 4th elastomeric element are provided in the fourth annular groove
Second seal member (7) can be overlayed on the wear plate (2) and the second end face by own resilient.
12. screw compressor according to claim 11, it is characterised in that：
It is provided on the second end face (12) and matches third annular groove (121) with second seal member (7), it is described
Second seal member (7) is arranged in the third annular groove (121)；
4th elastomeric element can overlay second seal member (7) by own resilient recessed in the third annular
On the side wall of the bottom of slot (121) and/or the third annular groove (121).
13. according to the screw compressor described in claim 1 to 12 any one, it is characterised in that：
Further include housing (8), fixed scroll (4) and upper cover (9) with cylindrical inner cavity；
The stent (1), the wear plate (2), the orbiter (3) and the fixed scroll (4) are arranged at the shell
In the inner cavity of body (8), compression chamber (51), the upper cover (9) is collectively formed in the orbiter (3) and the fixed scroll (4)
The discharge chamber (52) of the high-pressure fluid of the compression chamber (51) discharge can be received with the fixed scroll (4) formation；
The oil back chamber (53) connected with the discharge chamber (52) is provided in the upper cover (9), is made in the discharge chamber (52)
High-pressure fluid can enter the oil back chamber (53) in；
Being provided on the stent (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 throttle (13) allowed fluid from is provided on the stent (1), the throttle (13) is drawn respectively with described
Circulation road (11) is connected with the oil back chamber (53), and the fluid in the oil back chamber (53) is enable to pass through the throttle (13)
Enter the back pressure cavity (5) with the drainage channel (11).
15. screw compressor according to claim 14, it is characterised in that：
The step surface (81) of circular ring shape is provided on the inner wall 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 stent (1) is circle, and the side wall of the stent (1) is bonded with the inner wall of the housing (8)；
When on the stent (1) have second end face (12) when, the stent (1) side wall and the second end face (12) it
Between, to form the arc section chamfering of the throttle (13) along being circumferentially provided with for the stent (1), make the throttle (13) with
Throttling passage (10) is collectively formed between the inner wall three of the wear plate (2) and the housing (8).
16. screw compressor according to claim 15, it is characterised in that：
It is interference fit between the side wall of the stent (1) and the inner wall of the housing (8).
17. screw compressor according to claim 15, it is characterised in that：
When the stent (1) is in the inner cavity of the housing (8), in the direction towards the wear plate (2), described
Terrace (81) is opposite to protrude 0.05 to 0.1 millimeter with the second end face (12).
18. screw compressor according to claim 14, it is characterised in that：
The cross sectional shape of the stent (1) is circle, and the side wall of the stent (1) is bonded with the inner wall of the housing (8)；
Circumferentially disposed arc section groove of the throttle (13) for stent (1) described in the side wall upper edge in the stent (1),
Throttling passage (10) is collectively formed in the inner wall of the groove and the housing (8).
19. screw compressor according to claim 18, it is characterised in that：
It is interference fit between the side wall of the stent (1) and the inner wall of the housing (8).
20. a kind of 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 |
|---|---|---|---|
| CN201721127039.5U CN207513827U (en) | 2017-09-04 | 2017-09-04 | Screw compressor and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721127039.5U CN207513827U (en) | 2017-09-04 | 2017-09-04 | Screw compressor and air conditioner |
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| Publication Number | Publication Date |
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| CN207513827U true CN207513827U (en) | 2018-06-19 |
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| CN201721127039.5U Active CN207513827U (en) | 2017-09-04 | 2017-09-04 | Screw compressor and air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575381A (en) * | 2017-09-04 | 2018-01-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Screw compressor and air conditioner |
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2017
- 2017-09-04 CN CN201721127039.5U patent/CN207513827U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575381A (en) * | 2017-09-04 | 2018-01-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Screw compressor and air conditioner |
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