CN105201826B - A kind of oil spout scroll air compressor of back-pressure structure - Google Patents
A kind of oil spout scroll air compressor of back-pressure structure Download PDFInfo
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- CN105201826B CN105201826B CN201510611774.2A CN201510611774A CN105201826B CN 105201826 B CN105201826 B CN 105201826B CN 201510611774 A CN201510611774 A CN 201510611774A CN 105201826 B CN105201826 B CN 105201826B
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- orbiter
- rack
- back pressure
- bearing
- fixed scroll
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Abstract
The present invention relates to a kind of oil spout scroll air compressors of back-pressure structure,Including fixed scroll,Orbiter,Cross slip-ring,Bent axle,Rack,Main balance weight,Countershaft bearing ring,Rear cover,Belt pulley,Capacity eccentric bearing,Base bearing and supplementary bearing,The orbiter engages to form compression chamber with fixed scroll,The bent axle is mounted on base bearing and supplementary bearing in rack,The eccentric part of bent axle is mounted on the wheel hub of orbiter,Bent axle and orbiter are fixedly mounted by capacity eccentric bearing,Intracavity space between the back side and rack of the orbiter constitutes back pressure cavity,Gap between the front side and orbiter of the fixed scroll forms air compression chamber,The back pressure through-hole being communicated between back pressure cavity and air compression chamber at least provided with one on the orbiter,The rack is equipped with oil outlet and oil supplying hole,The drainback passage is to be located at the oil return circuit that suction plenum and back pressure cavity are communicated in frame side wall.The present invention makes compression efficiency be greatly improved, and operation is more stablized.
Description
Technical field
The present invention relates to a kind of compressors, and in particular to one kind not using seal construction between Moving plate back side and rack
The oil spout scroll air compressor of back pressure cavity configuration.
Background technology
Scroll air compressor is efficient with its, low noise, it is small, be conducive to the advantages that energy saving and environmental protection and wide
The general occasion that compressed air is needed applied to industries such as industry, agricultural, communications and transportation.Scroll air compressor mainly runs part whirlpool
Disk only engages, and does not generate abrasion, thus the service life is longer than piston type, screw compressor, is pneumatic machinery ideal power source.
In scroll air compressor, the main part scroll plate that runs is divided into orbiter and fixed scroll, orbiter and fixed scroll
Vortex piece is inside set, in general, being bonded to each other by orbiter and fixed scroll forms compression chamber, when orbiter drives edge by bent axle
When certain circular path and being translatable, orbiter vortex piece is formed by relative to the movement of fixed scroll vortex piece by the two
Compression chamber is mobile and changes its volume and completes the process of compressed air to be sucked, be compressed, discharged.
There are axial gaps and radial clearance when fixed scroll and the orbiter operation of scroll air compressor, real
The Effec-tive Function of existing scroll air compressor, major measure are when ensureing compressor operating in theory between axial gap and radial direction
Gap is zero.Realize that gap when fixed scroll and orbiter are run is zero, current technology is to use axial elasticity technology
With radial compliance technology.Its mode is the scroll air compressor using fixed radial gap, fixed scroll and orbiter
Between radial clearance (gap i.e. between vortex piece tooth top and bottom of the tooth) ensure mainly by processing and assembling, it is empty to ensure to be vortexed
Air compressor does not occur to cause the machinery between orbiter and fixed scroll stuck due to thermal expansion and pressure distortion when operating,
Radial clearance needs to set certain value, will result in radial more leakage in compression process in this way, causes compression efficiency
Decline.In the compressor arrangement in such fixed radial gap, compression efficiency is improved, it is necessary to reduce radial clearance, in this way
The stuck probability of machinery is resulted in rise.Also, the compressor arrangement in fixed radial gap, the requirement to the precision of processing is very
Height needs to improve the accuracy of form and position processed to ensure the uniformity of radial clearance, needs to use group technology in assembling,
Processing and the rising of assembly cost are resulted in this way, and compressor cost increase, the competitiveness of compressor is finally caused to decline.
Invention content
The object of the present invention is to which there is above-mentioned shortcoming in order to solve existing compressor, a kind of back-pressure structure is provided
Oil spout scroll air compressor.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of oil spout scroll air compressor of back-pressure structure, including fixed scroll, orbiter, cross slip-ring, bent axle,
Rack, main balance weight, countershaft bearing ring, rear cover, belt pulley, capacity eccentric bearing, base bearing and supplementary bearing, the orbiter with
Fixed scroll engages to form compression chamber, and the bent axle is mounted on base bearing and supplementary bearing in rack, the eccentric part of bent axle
On the wheel hub of orbiter, bent axle and orbiter are fixedly mounted by capacity eccentric bearing, the back of the body of the orbiter
Intracavity space between side and rack constitutes back pressure cavity, and the gap between the front side and orbiter of the fixed scroll forms sky
Gas compression chamber, the back pressure through-hole being communicated between back pressure cavity and air compression chamber at least provided with one on the orbiter, institute
The rack stated be equipped with oil outlet and oil supplying hole, the drainback passage be located in frame side wall be communicated in suction plenum and
The oil return circuit of back pressure cavity, the back pressure cavity is by adjusting rack oil supplying hole, drainback passage and orbiter back pressure through-hole
Size adjusts the gas pressure of back pressure cavity.
The purpose of the present invention can also be achieved through the following technical solutions：
Further, the back pressure through-hole is located at the axle sleeve hole edge in orbiter, close to orbiter center
Position.
Further, the back pressure through-hole is distributed in the vortex piece lateral location of orbiter.
Further, pressure of inspiration(Pi) is formed between the fixed scroll one side, orbiter side and the inner cavity of rack
Chamber is communicated equipped with a drainback passage with back pressure cavity in suction plenum.
Further, constant clearance is maintained between the orbiter and rack.
Further, the steady state value of the constant clearance is 0.02-0.1mm.
Beneficial effects of the present invention：
Intracavity space between the back side and rack of orbiter of the present invention constitutes back pressure cavity, the front side of the fixed scroll
Gap between orbiter forms air compression chamber, on the orbiter at least provided with one be communicated in back pressure cavity with it is empty
Back pressure through-hole between gas compression chamber.By constructing back pressure cavity, orbiter axial movement when compressor operation is made closely to be close to
Fixed scroll effectively eliminates radial leakage gap, due to radial leakage gap be influence compression efficiency it is most important because
Element, therefore, the present invention make compression efficiency be greatly improved.
2, in the present invention, due to using there is back pressure through-hole, so without using gasket structure back pressure cavity, eliminating sealing
Influence of the material to unfailing performance, improves the operational reliability of compressor.
3, the configuration of the present invention is simple, due to using there is back pressure through-hole, to the processing of orbiter, fixed scroll and rack
The accuracy of form and position requires to decline, and can cancel assembling grouping, and processing efficiency and packaging efficiency can be improved, compressor cost is made to decline.
Description of the drawings
Fig. 1 is the overall distribution schematic diagram of compressor arrangement of the present invention
Fig. 2 is compressor frame structural schematic diagram of the present invention.
Fig. 3 is compressor orbiter structural schematic diagram of the present invention.
Fig. 4 is compressor orbiter front view of the present invention.
Fig. 5 is compressor orbiter tilting moment of the present invention with pressure at expulsion variation diagram.
Specific implementation mode
Below in conjunction with attached drawing, the present invention is described in further detail.
Referring to figs. 1 to a kind of oil spout scroll air compressor of back-pressure structure shown in Fig. 4, including fixed scroll 1, dynamic vortex
Disk 2, cross slip-ring 3, bent axle 4, rack 5, main balance weight 6, countershaft bearing ring 7, rear cover 8, belt pulley 9, capacity eccentric bearing 15, main shaft
16 and supplementary bearing 17 are held, the orbiter 2 engages to form compression chamber with fixed scroll 1, and the bent axle 4 is with base bearing 16
It is mounted in rack 5 with supplementary bearing 17, the eccentric part of bent axle 4 is mounted on the wheel hub of orbiter 2, passes through capacity eccentric bearing 15
Bent axle 4 and orbiter 2 are fixedly mounted, the intracavity space between the back side and rack 5 of the orbiter 2 constitutes back pressure cavity
100, gap between the front side and orbiter 2 of the fixed scroll 1 forms air compression chamber 400, on the orbiter 2
The back pressure through-hole 2-1 being communicated between back pressure cavity 100 and air compression chamber 400 at least provided with one.
In embodiment, the back pressure through-hole 2-1 is located at the edges axle sleeve hole 2-2 in orbiter 2, close to dynamic vortex
2 center of disk.The back pressure through-hole 2-1 is distributed in 21 lateral location of vortex piece of orbiter 2.The fixed scroll 1
Suction plenum 200 is formed between one side, 2 side of orbiter and the inner cavity of rack 5, and one is equipped in suction plenum 200
Drainback passage 5-2 is communicated with back pressure cavity 100.Constant clearance 302 is maintained between the orbiter 2 and rack 5, this is constant
The steady state value in gap 302 is 0.02-0.1mm.The rack is equipped with oil outlet 5-1 and oil supplying hole 5-4, and the oil return is logical
Road 5-2 is to be located at the oil return circuit that suction plenum 200 and back pressure cavity 100 are communicated in 5 side wall of rack, the back pressure cavity
100 adjust back pressure cavity by adjusting the size of rack oil supplying hole 5-4, drainback passage 5-2 and orbiter back pressure through-hole 2-1
100 gas pressure.
In the present invention, as shown in Figs 1-4, organic frame oil supplying hole 5-4 is installed in compressor frame 5, lubricating oil passes through fuel feeding
Hole 5-4 enters rack rear portion and front by the channel at rack rear portion and crankshaft center portion respectively, lubricates supplementary bearing 17, master respectively
Bearings and motive position, the lubricating oil such as bearing 16, capacity eccentric bearing 15 and partition ring 3 collect in bottom of the frame, in back pressure cavity 100
Under the action of gas pressure, suction plenum 200, plug are entered equipped with oil outlet 5-1 and drainback passage 5-2 by rack 5
5-3 prevents oil leak from going out outside.The present invention in use, by set the size of oil supplying hole 5-4, drainback passage 5-2 it is big
It is small, and the size by setting the back pressure through-hole 2-1 on orbiter 2, so that back pressure cavity 100 is kept certain in compressor operation
Gas pressure, under the action of this 100 pressure of back pressure cavity, orbiter 2 is closely close to fixed scroll 1, orbiter bottom of the tooth
Radial clearance 301 between radial clearance 300 and fixed scroll bottom of the tooth between fixed scroll tooth height and orbiter tooth height is kept
For small―gap suture, orbiter 2 is a steady state value with 5 supporting surface gap 302 of rack.As a result, pressing the orbiter 1 of the present invention
Axial movement is close to fixed scroll 1 rather than deviates from fixed scroll 1 when contracting machine operates, therefore can effectively eliminate radial leakage
Gap.
The present invention is in application, as shown in figure 5, the pressure of back pressure cavity can be adjusted according to pressure at expulsion operating mode, when making
When with relatively high gas exhaust pressure X, at this point, the tilting moment Y due to orbiter 2 is increased, need to increase back pressure cavity 100
Pressure, also be ensure Moving plate operating stability, when using pressure at expulsion increase when, need to make tilting moment curve Z-direction Y
Axis negative direction moves.
Due to eliminating radial clearance, compression efficiency is greatly improved；Thus it avoids using gasket structure back pressure
Chamber eliminates influence of the sealing material to reliability and performance, improves the reliability of compressor, and thus simplify compressor
Overall structure, the accuracy of form and position of the processing of orbiter, fixed scroll and rack is required to decline, and assembling point can be eliminated
Processing efficiency and packaging efficiency can be improved in group, and compressor cost is made to decline.The present invention have that compression efficiency is high, assembling is simple and
Feature at low cost.
Claims (3)
1. a kind of oil spout scroll air compressor of back-pressure structure, including fixed scroll (1), orbiter (2), cross slip-ring
(3), bent axle (4), rack (5), main balance weight (6), countershaft bearing ring (7), rear cover (8), belt pulley (9), capacity eccentric bearing (15),
Base bearing (16) and supplementary bearing (17), the orbiter (2) engage to form compression chamber with fixed scroll (1), the song
Axis (4) is mounted on base bearing (16) and supplementary bearing (17) in rack (5), and the eccentric part of bent axle (4) is mounted on orbiter
(2) on wheel hub, bent axle (4) and orbiter (2) are fixedly mounted by capacity eccentric bearing (15), it is characterized in that：The dynamic whirlpool
Intracavity space between the back side and rack (5) of capstan (2) constitutes back pressure cavity (100), the front side of the fixed scroll (1) with it is dynamic
Gap between scroll plate (2) forms air compression chamber (400), and the back of the body is communicated at least provided with one on the orbiter (2)
Press the back pressure through-hole (2-1) between chamber (100) and air compression chamber (400)；The rack is equipped with oil outlet (5-1) and supplies
Oilhole (5-4), drainback passage (5-2) are to be located in rack (5) side wall to be communicated in suction plenum (200) and back pressure cavity (100)
Oil return circuit, the back pressure cavity (100) by adjusting rack oil supplying hole (5-4), drainback passage (5-2) and orbiter carry on the back
It presses the size of through-hole (2-1) to adjust the gas pressure of back pressure cavity (100), is protected between the orbiter (2) and rack (5)
Hold constant clearance (302), the steady state value of the constant clearance (302) is 0.02-0.1mm, fixed scroll (1) side
Suction plenum (200) is formed between face, orbiter (2) side and the inner cavity of rack (5), in suction plenum (200)
It is communicated with back pressure cavity (100) equipped with a drainback passage (5-2).
2. a kind of oil spout scroll air compressor of back-pressure structure according to claim 1, it is characterized in that：The back pressure
Through-hole (2-1) is located at edge axle sleeve hole (2-2) in orbiter (2), close to orbiter (2) center.
3. a kind of oil spout scroll air compressor of back-pressure structure according to claim 1, it is characterized in that：The back pressure
Through-hole (2-1) is distributed in vortex piece (21) lateral location of orbiter (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510611774.2A CN105201826B (en) | 2015-09-23 | 2015-09-23 | A kind of oil spout scroll air compressor of back-pressure structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510611774.2A CN105201826B (en) | 2015-09-23 | 2015-09-23 | A kind of oil spout scroll air compressor of back-pressure structure |
Publications (2)
| Publication Number | Publication Date |
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| CN105201826A CN105201826A (en) | 2015-12-30 |
| CN105201826B true CN105201826B (en) | 2018-08-24 |
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| CN201510611774.2A Active CN105201826B (en) | 2015-09-23 | 2015-09-23 | A kind of oil spout scroll air compressor of back-pressure structure |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102549777B1 (en) * | 2016-12-21 | 2023-06-30 | 삼성전자주식회사 | Scroll compressor |
| CN107676261A (en) * | 2017-10-19 | 2018-02-09 | 苏州英华特涡旋技术有限公司 | A kind of screw compressor with lubrication system |
| CN110671321A (en) * | 2019-09-11 | 2020-01-10 | 河北昊方新能源科技有限公司 | Oil-free vortex brake booster pump |
| DE102020109556B4 (en) | 2020-04-06 | 2022-10-06 | Hanon Systems | Devices for compressing a gaseous fluid and methods for operating the devices |
| CN114962259B (en) * | 2022-05-24 | 2023-12-05 | 江苏太平洋精锻科技股份有限公司 | Back pressure mechanism of electric automobile air conditioner compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4861245A (en) * | 1986-08-22 | 1989-08-29 | Hitachi, Ltd. | Scroll compressor with sealed pressure space biasing the orbiting scroll member |
| CN1132826A (en) * | 1994-10-24 | 1996-10-09 | 株式会社日立制作所 | Vortex-type compressor |
| CN201714672U (en) * | 2010-05-28 | 2011-01-19 | 湖南云箭集团有限公司 | Cooling lubricating oil oilway structure of vortex type air compressor main frame |
| CN104747438A (en) * | 2013-12-30 | 2015-07-01 | 上海三电贝洱汽车空调有限公司 | Scroll compressor |
| CN204961293U (en) * | 2015-09-23 | 2016-01-13 | 广州广涡压缩机有限公司 | Oil spout vortex air compressor of backpressure structure |
-
2015
- 2015-09-23 CN CN201510611774.2A patent/CN105201826B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4861245A (en) * | 1986-08-22 | 1989-08-29 | Hitachi, Ltd. | Scroll compressor with sealed pressure space biasing the orbiting scroll member |
| CN1132826A (en) * | 1994-10-24 | 1996-10-09 | 株式会社日立制作所 | Vortex-type compressor |
| CN201714672U (en) * | 2010-05-28 | 2011-01-19 | 湖南云箭集团有限公司 | Cooling lubricating oil oilway structure of vortex type air compressor main frame |
| CN104747438A (en) * | 2013-12-30 | 2015-07-01 | 上海三电贝洱汽车空调有限公司 | Scroll compressor |
| CN204961293U (en) * | 2015-09-23 | 2016-01-13 | 广州广涡压缩机有限公司 | Oil spout vortex air compressor of backpressure structure |
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| CN105201826A (en) | 2015-12-30 |
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