CN106286294B - Screw compressor - Google Patents
Screw compressor Download PDFInfo
- Publication number
- CN106286294B CN106286294B CN201610834625.7A CN201610834625A CN106286294B CN 106286294 B CN106286294 B CN 106286294B CN 201610834625 A CN201610834625 A CN 201610834625A CN 106286294 B CN106286294 B CN 106286294B
- Authority
- CN
- China
- Prior art keywords
- quiet disk
- hole
- screw compressor
- cavity
- noise elimination
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0269—Details concerning the involute wraps
- F04C18/0292—Ports or channels located in the wrap
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0021—Systems for the equilibration of forces acting on the pump
- F04C29/0035—Equalization of pressure pulses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
Abstract
The invention discloses a kind of screw compressors, belong to Compressor Technology field, design to solve the problems such as existing apparatus can generate tilting moment to Moving plate.Screw compressor of the present invention includes quiet disk, back pressure cavity and compression chamber, and Jing Panshang is provided with tracting pressuring hole and at least one linked hole, one end connection of tracting pressuring hole to compression chamber, other end connection to linked hole；Linked hole connection is to back pressure cavity.The drainage trough setting of screw compressor of the present invention is on quiet disk and uncorrelated to Moving plate, will not generate tilting moment to Moving plate, not influence the stable motion of Moving plate, improve the reliability of screw compressor.
Description
Technical field
The present invention relates to Compressor Technology field more particularly to a kind of screw compressors.
Background technique
In screw compressor, Moving plate can due to the effect for the axial gas power for bearing change with angle of eccentricity quiet disk with
Along axial floating between support body.The presence of axial gas power can not only cause the expansion of compression chamber axial gap, increase and let out
Leakage reduces volumetric efficiency, and also results in friction power loss increase.
In order to solve this problem, most common method is using back-pressure structure come balancing axial gas force.Specifically
, drainage trough and back pressure cavity are opened up, by active force that back pressure intracavity gas generates come balancing axial thrust, Moving plate is pressed to quiet
Disk.
Existing drainage trough a part is located on Moving plate, another part is located on quiet disk, and only opens up in the side of Moving plate
The structure.Drainage trough connection when in a certain angular range weekly, drainage trough access can generate tilting moment to Moving plate；And by
Farther out in center of the drainage trough from Moving plate, therefore the arm of force of tilting moment is longer, so tilting moment can be to the motion stabilization of Moving plate
Property has an impact；And biggish frictional dissipation can be generated in this approximate angle of drainage trough connection, it is final influence model machine can
By property；The 500-1000Hz pneumatic noise of pressure fluctuation formation, existing knot can be generated in the moment of drainage trough and back pressure cavity connection
Structure can not reduce the partial noise.
Summary of the invention
It is an object of the invention to propose that a kind of back pressure pilot device (that is, back-pressure structure) will not generate power of toppling to Moving plate
The screw compressor of square.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of screw compressor, including quiet disk, back pressure cavity and compression chamber are provided with tracting pressuring hole and at least on the quiet disk
One linked hole；When the pressure of required balance is bigger, the tracting pressuring hole is along the molded line of the quiet disk closer to the quiet disk
Center；Noise elimination cavity is provided on the quiet disk；One end connection of the tracting pressuring hole is to compression chamber, other end connection to the noise elimination
Chamber；Described linked hole one end connection is to the noise elimination cavity, other end connection to back pressure cavity；The screw compressor further includes quiet disk
Cover board, the quiet disk cover plate are covered on above the quiet disk；The noise elimination cavity is between the quiet disk cover plate and the quiet disk；
Transitional slope is provided between the noise elimination cavity and the linked hole；One end that the transitional slope connects the linked hole is high
In one end that it connects the noise elimination cavity.
In particular, the cross section of the noise elimination cavity in a ring, it is rectangular or oval.
In particular, check valve sheet is provided in the tracting pressuring hole or in the end point of the tracting pressuring hole, when the compression
The check valve sheet is opened when intracavitary pressure is greater than the pressure in the back pressure cavity, when the pressure in the compression chamber is less than etc.
The check valve sheet is closed when pressure in the back pressure cavity.
In particular, there are two the linked holes for setting on the quiet disk, two linked holes are about the quiet disk
Center symmetric setting.
In particular, the screw compressor further includes Moving plate, the back pressure cavity is located at the separate quiet disk of the Moving plate
Lateral position.
In particular, the linked hole is oblique relative to the axis of the quiet disk.
The tracting pressuring hole and at least one linked hole for drainage, tracting pressuring hole are provided on the quiet disk of screw compressor of the present invention
It is uncorrelated to Moving plate with the drainage trough of linked hole composition, tilting moment will not be generated to Moving plate, not influence the stable motion of Moving plate,
Improve the reliability of screw compressor.
Detailed description of the invention
Fig. 1 is the cross-sectional view for the screw compressor that the preferred embodiment of the present invention provides；
Fig. 2 is the partial sectional view for the screw compressor that the preferred embodiment of the present invention provides；
Fig. 3 is the explosive view for the quiet disk component that the preferred embodiment of the present invention provides；
Fig. 4 is the bottom view for the quiet disk that the preferred embodiment of the present invention provides；
Fig. 5 is the top view for the quiet disk that the preferred embodiment of the present invention provides.
In figure:
1, quiet disk；2, back pressure cavity；3, compression chamber；4, quiet disk cover plate；5, Moving plate；6, check valve sheet；11, tracting pressuring hole；12, join
Through-hole；13, noise elimination cavity；14, transitional slope.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
Preferred embodiment:
This preferred embodiment discloses a kind of screw compressor.As shown in Figures 1 to 5, the screw compressor include quiet disk 1,
Back pressure cavity 2, compression chamber 3 and Moving plate 5, back pressure cavity 2 are located at the lateral position far from quiet disk 1 of Moving plate 5.It is provided with and draws on quiet disk 1
Press hole 11 and at least one linked hole 12, one end connection of tracting pressuring hole 11 to compression chamber 3, other end connection to linked hole 12；Connection
12 connection of through-hole is to back pressure cavity 2.
The pressure drainage trough (including tracting pressuring hole 11 and linked hole 12) of the back pressure cavity 2 of screw compressor of the present invention does not open up
Drainage is just able to achieve on Moving plate 5, without by Moving plate 5 and the cooperation of quiet disk 1, but by quiet disk 1 directly by pressure from pressure
Contracting chamber 3 leads to back pressure cavity 2, will not generate tilting moment to Moving plate 5, not influence the stable motion of Moving plate 5, improve scroll compression
The reliability of machine.
In order to reduce, eliminate the 500-1000Hz pneumatic noise caused by the moment of drainage trough and 2 connection of back pressure cavity,
Noise elimination cavity 13 is set on quiet disk 1.One end connection of tracting pressuring hole 11 is to compression chamber 3, other end connection to noise elimination cavity 13；Linked hole 12
One end connection is to noise elimination cavity 13, other end connection to back pressure cavity 2.The concrete shape of noise elimination cavity 13 can determine 2 institute of back pressure cavity
It is designed after the ripple frequency characteristic of generation for the requirement for solving the noise, can be the structure of cross section in a ring, may be used also
Be cross section be square, oval and other arbitrary shapes structure, only need set by the expansion length of the noise elimination cavity 13 meets
Count deadening frequency band.
On the basis of above structure, screw compressor further includes quiet disk cover plate 4, and quiet disk cover plate 4 is covered on quiet disk 1
Side；Noise elimination cavity 13 is between quiet disk cover plate 4 and quiet disk 1.That is, the top half of quiet disk 1, quiet disk cover plate is arranged in noise elimination cavity 13
4 are covered on noise elimination cavity 13.The noise elimination cavity 13 is expanding reactive muffler, and shape is mainly determined by frequency of noise elimination.
Pressure when Moving plate 5 and the cooperation of quiet disk 1 are compressed to certain angle in compression chamber 3 flow to quiet disk 1 through tracting pressuring hole 11
In the noise elimination cavity 13 that top opens up, back pressure cavity 2, entire flow path such as arrow institute in Fig. 2 and Fig. 3 then are flow to by linked hole 12
Show.
For mitigation of gases flowing velocity, pneumatic noise is further decreased, is arranged between noise elimination cavity 13 and linked hole 12
Transitional slope 14.One end that transitional slope 14 connects linked hole 12 is higher than its one end for connecting noise elimination cavity 13, and air-flow is oblique along transition
It climbs to slow down its velocity of liquid assets, reduce noise on slope 14.
On the basis of above structure, check valve sheet 6 is provided in tracting pressuring hole 11, when the pressure in compression chamber 3 is greater than
Check valve sheet 6 is opened when pressure in back pressure cavity 2, unidirectional when the pressure in compression chamber 3 is less than or equal to the pressure in back pressure cavity 2
Valve block 6 is closed, can be to avoid gas backflow in back pressure cavity 2 into compression chamber 3.
The quantity of linked hole 12 is unlimited on quiet disk 1, and a linked hole 12 can only be arranged, be likewise supplied with the effect of water conservancy diversion
But effect is slightly worse；Preferably, there are two linked hole 12, central symmetry of two linked holes 12 about quiet disk 1 for setting on quiet disk 1
Setting.That is, two linked holes 12 are spaced 180 ° of settings, connection back pressure cavity 2 is distinguished from both sides, so that the pressure change of back pressure cavity 2
More stable, the movement of Moving plate 5 is also more stable.
The size of position pressure value required for back pressure cavity 2 of tracting pressuring hole 11 determines that pressure if desired is bigger on quiet disk 1
Then tracting pressuring hole 11 is along the molded line of quiet disk 1 closer to the center of quiet disk 1 (direction of dotted line with the arrow is moved along Fig. 4).
Linked hole 12 is oblique relative to the axis of quiet disk 1, and air-flow is avoided to fling initiation noise, further decreases drainage
When pneumatic noise.
Note that the technical principle that above are only presently preferred embodiments of the present invention and used.Those skilled in the art can manage
Solution, the invention is not limited to the specific embodiments described herein, is able to carry out various apparent changes for a person skilled in the art
Change, readjust and substitutes without departing from protection scope of the present invention.Therefore, although by above embodiments to the present invention into
It has gone and has been described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept,
It can also include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (6)
1. a kind of screw compressor, including quiet disk (1), back pressure cavity (2) and compression chamber (3), which is characterized in that in the quiet disk
(1) tracting pressuring hole (11) and at least one linked hole (12) are provided on；
When the pressure of required balance is bigger, the tracting pressuring hole (11) is along the molded line of the quiet disk (1) closer to the quiet disk
(1) center；
Noise elimination cavity (13) are provided on the quiet disk (1)；One end connection of the tracting pressuring hole (11) is to the compression chamber (3), another
One end connection is to the noise elimination cavity (13)；Linked hole (12) one end connection is to the noise elimination cavity (13), and other end connection is extremely
Back pressure cavity (2)；
The screw compressor further includes quiet disk cover plate (4), and the quiet disk cover plate (4) is covered on above the quiet disk (1)；It is described
Noise elimination cavity (13) is between the quiet disk cover plate (4) and the quiet disk (1)；
Transitional slope (14) are provided between the noise elimination cavity (13) and the linked hole (12)；The transitional slope (14) is even
The one end for connecing the linked hole (12) is higher than its one end for connecting the noise elimination cavity (13).
2. screw compressor according to claim 1, which is characterized in that the cross section of the noise elimination cavity (13) in a ring,
It is rectangular or oval.
3. screw compressor according to claim 1, which is characterized in that in the tracting pressuring hole (11) or in the impulse
The end point in hole (11) is provided with check valve sheet (6), when the pressure in the compression chamber (3) is greater than in the back pressure cavity (2)
The check valve sheet (6) is opened when pressure, when the pressure in the compression chamber (3) is less than or equal to the pressure in the back pressure cavity (2)
The check valve sheet (6) is closed when power.
4. screw compressor according to any one of claims 1 to 3, which is characterized in that be provided on the quiet disk (1)
Two linked holes (12), center symmetric setting of two linked holes (12) about the quiet disk (1).
5. screw compressor according to any one of claims 1 to 3, which is characterized in that the screw compressor further includes
Moving plate (5), the back pressure cavity (2) are located at the lateral position far from the quiet disk (1) of the Moving plate (5).
6. screw compressor according to any one of claims 1 to 3, which is characterized in that the linked hole (12) relative to
The axis of the quiet disk (1) is oblique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610834625.7A CN106286294B (en) | 2016-09-19 | 2016-09-19 | Screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610834625.7A CN106286294B (en) | 2016-09-19 | 2016-09-19 | Screw compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106286294A CN106286294A (en) | 2017-01-04 |
| CN106286294B true CN106286294B (en) | 2019-06-07 |
Family
ID=57712126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610834625.7A Active CN106286294B (en) | 2016-09-19 | 2016-09-19 | Screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106286294B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112018000059T5 (en) * | 2016-11-30 | 2019-03-07 | Hanon Systems | ELECTRICAL COMPRESSOR |
| CN109185158A (en) * | 2018-11-08 | 2019-01-11 | 珠海凌达压缩机有限公司 | A kind of muffler and compressor |
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|---|---|---|---|---|
| CN1690433A (en) * | 2004-04-28 | 2005-11-02 | 乐金电子(天津)电器有限公司 | Screw compressor |
| CN1823227A (en) * | 2003-06-12 | 2006-08-23 | 松下电器产业株式会社 | Scroll compressor |
| CN102084134A (en) * | 2008-07-15 | 2011-06-01 | 大金工业株式会社 | Scroll compressor |
| CN103032329A (en) * | 2011-09-28 | 2013-04-10 | Lg电子株式会社 | Scroll compressor |
| CN103629111A (en) * | 2012-08-27 | 2014-03-12 | 湖南华强电气有限公司 | Semi-closed scroll compressor |
| CN104863851A (en) * | 2014-02-20 | 2015-08-26 | Lg电子株式会社 | Scroll compressor |
| CN106122010A (en) * | 2016-08-22 | 2016-11-16 | 广东美的暖通设备有限公司 | Screw compressor and refrigeration plant |
| CN206206152U (en) * | 2016-09-19 | 2017-05-31 | 珠海格力节能环保制冷技术研究中心有限公司 | Screw compressor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08284849A (en) * | 1995-04-13 | 1996-10-29 | Hitachi Ltd | Scroll compressor |
| JPH11166490A (en) * | 1997-12-03 | 1999-06-22 | Mitsubishi Electric Corp | Displacement control scroll compressor |
| JP4614441B2 (en) * | 2005-06-10 | 2011-01-19 | 日立アプライアンス株式会社 | Scroll compressor |
| KR101576459B1 (en) * | 2009-02-25 | 2015-12-10 | 엘지전자 주식회사 | Scoroll compressor and refrigsrator having the same |
-
2016
- 2016-09-19 CN CN201610834625.7A patent/CN106286294B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1823227A (en) * | 2003-06-12 | 2006-08-23 | 松下电器产业株式会社 | Scroll compressor |
| CN1690433A (en) * | 2004-04-28 | 2005-11-02 | 乐金电子(天津)电器有限公司 | Screw compressor |
| CN102084134A (en) * | 2008-07-15 | 2011-06-01 | 大金工业株式会社 | Scroll compressor |
| CN103032329A (en) * | 2011-09-28 | 2013-04-10 | Lg电子株式会社 | Scroll compressor |
| CN103629111A (en) * | 2012-08-27 | 2014-03-12 | 湖南华强电气有限公司 | Semi-closed scroll compressor |
| CN104863851A (en) * | 2014-02-20 | 2015-08-26 | Lg电子株式会社 | Scroll compressor |
| CN106122010A (en) * | 2016-08-22 | 2016-11-16 | 广东美的暖通设备有限公司 | Screw compressor and refrigeration plant |
| CN206206152U (en) * | 2016-09-19 | 2017-05-31 | 珠海格力节能环保制冷技术研究中心有限公司 | Screw compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106286294A (en) | 2017-01-04 |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190513 Address after: 519070, Jinji Hill Road, front hill, Zhuhai, Guangdong Applicant after: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI Applicant after: Zhuhai Gree Energy Saving & Refrigerating Technology Resarch Center Co., Ltd. Address before: 519070 science and technology building, 789 Jinji Road, Qianshan, Zhuhai, Guangdong Applicant before: Zhuhai Gree Energy Saving & Refrigerating Technology Resarch Center Co., Ltd. |
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