CN106286294A - Screw compressor - Google Patents
Screw compressor Download PDFInfo
- Publication number
- CN106286294A CN106286294A CN201610834625.7A CN201610834625A CN106286294A CN 106286294 A CN106286294 A CN 106286294A CN 201610834625 A CN201610834625 A CN 201610834625A CN 106286294 A CN106286294 A CN 106286294A
- Authority
- CN
- China
- Prior art keywords
- screw compressor
- hole
- quiet dish
- cavity
- back pressure
- 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.)
- Granted
Links
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
-
- 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 compressor, belong to Compressor Technology field, the problems such as Moving plate generation tilting moment can be designed for solving existing apparatus.Screw compressor of the present invention includes quiet dish, back pressure cavity and compression chamber, and Jing Panshang is provided with tracting pressuring hole and at least one linked hole, and one end UNICOM of tracting pressuring hole to compression chamber, other end UNICOM are to linked hole；Linked hole UNICOM is to back pressure cavity.The drainage trough of screw compressor of the present invention is arranged on quiet dish and uncorrelated with Moving plate, Moving plate will not be produced tilting moment, not affect the stable motion of Moving plate, improve the reliability of screw compressor.
Description
Technical field
The present invention relates to Compressor Technology field, particularly relate to a kind of screw compressor.
Background technology
In screw compressor, Moving plate can because bear the effect of the axial gas power with angle of eccentricity change and at quiet dish and
Float vertically between stake body.The existence of axial gas power can not only cause the expansion of compression chamber axial gap, increase and let out
Leakage, reduction volumetric efficiency, and also result in friction power loss and increase.
In order to solve this problem, current most common method is to use back-pressure structure to carry out balancing axial gas force.Specifically
, offer drainage trough and back pressure cavity, the active force produced by back pressure intracavity gas carrys out balancing axial thrust, is pressed to by Moving plate quiet
Dish.
An existing drainage trough part is positioned on Moving plate, another part is positioned at Jing Panshang, and only side at Moving plate is offered
This structure.When in the most a certain angular range Nei Shi drainage trough UNICOM, drainage trough path can produce tilting moment to Moving plate；And by
In drainage trough from the center of Moving plate farther out, therefore the arm of force of tilting moment is longer, so tilting moment can be to the motion stabilization of Moving plate
Property produce impact；And bigger frictional dissipation can be produced at this approximate angle of drainage trough UNICOM, finally affect model machine can
By property；The 500-1000Hz pneumatic noise that pressure fluctuation is formed, existing knot can be produced in the moment of drainage trough Yu back pressure cavity UNICOM
Structure cannot reduce this partial noise.
Summary of the invention
It is an object of the invention to propose a kind of back pressure pilot device (that is, back-pressure structure) and Moving plate will not be produced power of toppling
The screw compressor of square.
For reaching this purpose, the present invention by the following technical solutions:
A kind of screw compressor, including quiet dish, back pressure cavity and compression chamber, is provided with tracting pressuring hole and at least on described quiet dish
One linked hole, one end UNICOM of described tracting pressuring hole to compression chamber, other end UNICOM to described linked hole；Described linked hole UNICOM
To described back pressure cavity.
Particularly, described quiet dish is provided with noise elimination cavity；One end UNICOM of described tracting pressuring hole is to compression chamber, other end UNICOM
To described noise elimination cavity；Described linked hole one end UNICOM is to described noise elimination cavity, other end UNICOM to described back pressure cavity.
Further, described screw compressor also includes quiet disk cover plate, and described quiet disk cover plate covers above described quiet dish；Institute
State noise elimination cavity between described quiet disk cover plate and described quiet dish.
Particularly, the cross section of described noise elimination cavity ringwise, square or oval.
Particularly, between described noise elimination cavity and described linked hole, it is provided with transitional slope；Described transitional slope connects institute
State one end higher than its described noise elimination cavity of connection, one end of linked hole.
Particularly, in described tracting pressuring hole or in the end of described tracting pressuring hole, it is provided with check valve sheet, when described compression
When the pressure of intracavity is more than the pressure in described back pressure cavity, described check valve sheet is opened, when the pressure in described compression chamber is less than
During pressure in described back pressure cavity, described check valve sheet is closed.
Particularly, being provided with two described linked holes on described quiet dish, two described linked holes are about described quiet dish
Centrosymmetry is arranged.
Particularly, described screw compressor also include Moving plate, described back pressure cavity be positioned at described Moving plate away from described quiet dish
Side at.
Particularly, when the pressure of required balance is the biggest described tracting pressuring hole along the molded line of described quiet dish the closer to described quiet
The center of dish.
Particularly, described linked hole is relative to the inclined shape of axis of described quiet dish.
The tracting pressuring hole for drain and at least one linked hole, tracting pressuring hole it is provided with on the quiet dish of screw compressor of the present invention
Uncorrelated with Moving plate with the drainage trough of linked hole composition, Moving plate will not be produced tilting moment, not affect the stable motion of Moving plate,
Improve the reliability of screw compressor.
Accompanying drawing explanation
Fig. 1 is the sectional view of the screw compressor that the preferred embodiment of the present invention provides；
Fig. 2 is the partial sectional view of the screw compressor that the preferred embodiment of the present invention provides；
Fig. 3 is the explosive view of the quiet dish assembly that the preferred embodiment of the present invention provides；
Fig. 4 is the upward view of the quiet dish that the preferred embodiment of the present invention provides；
Fig. 5 is the top view of the quiet dish that the preferred embodiment of the present invention provides.
In figure:
1, quiet dish；2, back pressure cavity；3, compression chamber；4, quiet disk cover plate；5, Moving plate；6, check valve sheet；11, tracting pressuring hole；12, connection
Through hole；13, noise elimination cavity；14, transitional slope.
Detailed description of the invention
Further illustrate technical scheme below in conjunction with the accompanying drawings and by detailed description of the invention.
Preferred embodiment:
The open a kind of screw compressor of this preferred embodiment.As shown in Figures 1 to 5, this screw compressor include quiet dish 1,
Back pressure cavity 2, compression chamber 3 and Moving plate 5, back pressure cavity 2 is positioned at the side away from quiet dish 1 of Moving plate 5.Quiet dish 1 is provided with and draws
Pressure hole 11 and at least one linked hole 12, one end UNICOM of tracting pressuring hole 11 to compression chamber 3, other end UNICOM are to linked hole 12；Connection
Through hole 12 UNICOM is to back pressure cavity 2.
The pressure drainage trough of the back pressure cavity 2 of screw compressor of the present invention is not offered (including tracting pressuring hole 11 and linked hole 12)
On Moving plate 5, drain could be realized without being coordinated by Moving plate 5 and quiet dish 1, but by quiet dish 1 direct by pressure from pressure
Contracting chamber 3 causes back pressure cavity 2, Moving plate 5 will not be produced tilting moment, not affect the stable motion of Moving plate 5, improve scroll compression
The reliability of machine.
In order to reduce, eliminate in 500-1000Hz pneumatic noise produced by the moment of drainage trough and back pressure cavity 2 UNICOM,
On quiet dish 1, noise elimination cavity 13 is set.One end UNICOM of tracting pressuring hole 11 is to compression chamber 3, other end UNICOM to noise elimination cavity 13；Linked hole 12
One end UNICOM is to noise elimination cavity 13, and other end UNICOM is to back pressure cavity 2.The concrete shape of noise elimination cavity 13 can determine back pressure cavity 2 institute
Design for the requirement solving this noise after the ripple frequency characteristic produced, can be cross section structure ringwise, also may be used
Be cross section be square, the oval and structure of other arbitrary shape, only need the expansion length of this noise elimination cavity 13 to meet set
Meter deadening frequency band.
On the basis of said structure, screw compressor also includes that quiet disk cover plate 4, quiet disk cover plate 4 cover on quiet dish 1
Side；Noise elimination cavity 13 is between quiet disk cover plate 4 and quiet dish 1.That is, noise elimination cavity 13 is arranged on the top half of quiet dish 1, quiet disk cover plate
4 cover on noise elimination cavity 13.This noise elimination cavity 13 is expanding reactive muffler, and its shape is mainly determined by frequency of noise elimination.
When Moving plate 5 coordinates with quiet dish 1 and to be compressed to certain angle, the pressure in compression chamber 3 flow to quiet dish 1 through tracting pressuring hole 11
In the noise elimination cavity 13 that top is offered, it is then passed through linked hole 12 and flow to back pressure cavity 2, arrow institute in whole stream such as Fig. 2 and Fig. 3
Show.
For mitigation of gases flowing velocity, reduce pneumatic noise further, arrange between noise elimination cavity 13 and linked hole 12
Transitional slope 14.Transitional slope 14 connects one end that one end of linked hole 12 connects noise elimination cavity 13 higher than it, and air-flow is oblique along transition
Slope 14 climbs to slow down its velocity of liquid assets, reduce noise.
On the basis of said structure, tracting pressuring hole 11 is provided with check valve sheet 6, when the pressure in compression chamber 3 is more than
During pressure in back pressure cavity 2, check valve sheet 6 is opened, unidirectional when pressure in the pressure in compression chamber 3 is less than or equal to back pressure cavity 2
Valve block 6 is closed, and gas backflow can be avoided in back pressure cavity 2 in compression chamber 3.
On quiet dish 1, the quantity of linked hole 12 does not limits, and can only arrange a linked hole 12, and it is likewise supplied with the effect of water conservancy diversion
But effect is slightly worse；Preferably, being provided with two linked holes 12 on quiet dish 1, two linked holes 12 are about the centrosymmetry of quiet dish 1
Arrange.That is, two linked holes 12 are spaced 180 ° of settings, from both sides difference UNICOM back pressure cavity 2 so that the pressure change of back pressure cavity 2
More steady, the motion of Moving plate 5 is the most more stable.
On quiet dish 1, the position of tracting pressuring hole 11 is determined by the size of force value required for back pressure cavity 2, and pressure if desired is the biggest
Then tracting pressuring hole 11 is along the molded line of quiet dish 1 the closer to the center (direction of the dotted line of band arrow is moved along Fig. 4) of quiet dish 1.
Linked hole 12 is relative to the inclined shape of axis of quiet dish 1, it is to avoid air-flow flings trigger noise, reduces drain further
Time pneumatic noise.
Note, above are only presently preferred embodiments of the present invention and the know-why used.Those skilled in the art can manage
Solve, the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art
Change, readjust and substitute without departing from protection scope of the present invention.Therefore, although by above example, the present invention is entered
Go and be described in further detail, but the present invention has been not limited only to above example, without departing from the inventive concept,
Other Equivalent embodiments more can also be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a screw compressor, including quiet dish (1), back pressure cavity (2) and compression chamber (3), it is characterised in that at described quiet dish
(1) tracting pressuring hole (11) and at least one linked hole (12) it are provided with on, one end UNICOM of described tracting pressuring hole (11) to described compression
Chamber (3), other end UNICOM to described linked hole (12)；Described linked hole (12) UNICOM is to described back pressure cavity (2).
Screw compressor the most according to claim 1, it is characterised in that be provided with noise elimination cavity (13) on described quiet dish (1)；
One end UNICOM of described tracting pressuring hole (11) is to described compression chamber (3), other end UNICOM to described noise elimination cavity (13)；Described linked hole
(12) one end UNICOM is to described noise elimination cavity (13), other end UNICOM to described back pressure cavity (2).
Screw compressor the most according to claim 2, it is characterised in that described screw compressor also includes quiet disk cover plate
(4), described quiet disk cover plate (4) covers in described quiet dish (1) top；Described noise elimination cavity (13) be positioned at described quiet disk cover plate (4) and
Between described quiet dish (1).
Screw compressor the most according to claim 2, it is characterised in that the cross section of described noise elimination cavity (13) ringwise,
Square or oval.
Screw compressor the most according to claim 2, it is characterised in that at described noise elimination cavity (13) and described linked hole
(12) transitional slope (14) it is provided with between；Described transitional slope (14) connects one end of described linked hole (12) and connects higher than it
One end of described noise elimination cavity (13).
Screw compressor the most according to claim 1, it is characterised in that in described tracting pressuring hole (11) or at described impulse
The end in hole (11) is provided with check valve sheet (6), in the pressure in described compression chamber (3) is more than described back pressure cavity (2)
During pressure, described check valve sheet (6) is opened, the pressure in the pressure in described compression chamber (3) is less than or equal to described back pressure cavity (2)
During power, described check valve sheet (6) is closed.
7. according to the screw compressor described in any one of claim 1 to 6, it is characterised in that be provided with on described quiet dish (1)
Two described linked holes (12), two described linked holes (12) are arranged about the centrosymmetry of described quiet dish (1).
8. according to the screw compressor described in any one of claim 1 to 6, it is characterised in that described screw compressor also includes
Moving plate (5), described back pressure cavity (2) is positioned at the side away from described quiet dish (1) of described Moving plate (5).
9. according to the screw compressor described in any one of claim 1 to 6, it is characterised in that when the pressure of required balance is got over
Time big, described tracting pressuring hole (11) is along the molded line of described quiet dish (1) the closer to the center of described quiet dish (1).
10. according to the screw compressor described in any one of claim 1 to 6, it is characterised in that described linked hole (12) relative to
The inclined shape of axis of described quiet dish (1).
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 true CN106286294A (en) | 2017-01-04 |
| CN106286294B 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109477483A (en) * | 2016-11-30 | 2019-03-15 | 翰昂汽车零部件有限公司 | Motor compressor |
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| 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 |
| 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 |
| CN1877126A (en) * | 2005-06-10 | 2006-12-13 | 日立空调·家用电器株式会社 | Scroll compressor and refrigerating apparatus |
| US20100212352A1 (en) * | 2009-02-25 | 2010-08-26 | Cheol-Hwan Kim | Compressor and refrigerating apparatus having the same |
| 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 |
-
2016
- 2016-09-19 CN CN201610834625.7A patent/CN106286294B/en active Active
Patent Citations (12)
| 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 |
| 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 |
| CN1877126A (en) * | 2005-06-10 | 2006-12-13 | 日立空调·家用电器株式会社 | Scroll compressor and refrigerating apparatus |
| CN102084134A (en) * | 2008-07-15 | 2011-06-01 | 大金工业株式会社 | Scroll compressor |
| US20100212352A1 (en) * | 2009-02-25 | 2010-08-26 | Cheol-Hwan Kim | Compressor and refrigerating apparatus having the same |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477483A (en) * | 2016-11-30 | 2019-03-15 | 翰昂汽车零部件有限公司 | Motor compressor |
| CN109477483B (en) * | 2016-11-30 | 2020-05-15 | 翰昂汽车零部件有限公司 | Electric 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106286294B (en) | 2019-06-07 |
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| 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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