CN206206152U - Screw compressor - Google Patents
Screw compressor Download PDFInfo
- Publication number
- CN206206152U CN206206152U CN201621064013.6U CN201621064013U CN206206152U CN 206206152 U CN206206152 U CN 206206152U CN 201621064013 U CN201621064013 U CN 201621064013U CN 206206152 U CN206206152 U CN 206206152U
- Authority
- CN
- China
- Prior art keywords
- quiet disk
- screw compressor
- hole
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of screw compressor, belong to Compressor Technology field, to solve to be designed the problems such as existing apparatus can produce tilting moment to Moving plate.The utility model screw compressor 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 UNICOM to compression chamber, the other end UNICOM to linked hole of tracting pressuring hole；Linked hole UNICOM is to back pressure cavity.The drainage trough of the utility model screw compressor be arranged on it is on quiet disk and uncorrelated to Moving plate, will not to Moving plate produce tilting moment, the stable motion of Moving plate is not influenceed, improve the reliability of screw compressor.
Description
Technical field
The utility model is related to Compressor Technology field, more particularly to a kind of screw compressor.
Background technology
In screw compressor, Moving plate can because of the effect of axial gas power bearing to change with angle of eccentricity in quiet disk and
Floated vertically between stake body.The presence of axial gas power can not only cause the expansion of compression chamber axial gap, increase to be let out
Leakage, reduction volumetric efficiency, and also result in friction power loss increase.
In order to solve this problem, current most common method is come balancing axial gas force using back-pressure structure.Specifically
, drainage trough and back pressure cavity are opened up, the active force produced by back pressure intracavity gas is pressed to Moving plate quiet come balancing axial thrust
Disk.
An existing drainage trough part is located on Moving plate, another part is located on quiet disk, and is only opened up in the side of Moving plate
The structure.When in a certain angular range Nei Shi drainage troughs UNICOM weekly, 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 more long, so tilting moment can be to the motion stabilization of Moving plate
Property produce influence；And this approximate angle in drainage trough UNICOM can produce larger frictional dissipation, final influence model machine can
By property；The 500-1000Hz pneumatic noises of pressure fluctuation formation, existing knot can be produced in the moment of drainage trough and back pressure cavity UNICOM
Structure cannot reduce the partial noise.
Utility model content
The purpose of this utility model is to propose that a kind of back pressure pilot device (that is, back-pressure structure) will not produce Moving plate to incline
Cover the screw compressor of torque.
It is that, up to this purpose, the utility model uses 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, one end UNICOM to compression chamber, the other end UNICOM to the linked hole of the tracting pressuring hole；The linked hole UNICOM
To the back pressure cavity.
Particularly, it is provided with noise elimination cavity on the quiet disk；One end UNICOM of the tracting pressuring hole to compression chamber, other end UNICOM
To the noise elimination cavity；Linked hole one end UNICOM is to the noise elimination cavity, other end UNICOM to the back pressure cavity.
Further, the screw compressor also includes quiet disk cover plate, and the quiet disk cover plate is covered in the quiet disk top；Institute
Noise elimination cavity is stated to be located between the quiet disk cover plate and the quiet disk.
Particularly, the cross section of the noise elimination cavity in a ring, square or ellipse.
Particularly, it is provided with transitional slope between the noise elimination cavity and the linked hole；The transitional slope connects institute
State the one end of one end higher than its connection noise elimination cavity of linked hole.
Particularly, check valve sheet is provided with the tracting pressuring hole or in the end of the tracting pressuring hole, when the compression
The check valve sheet is opened when pressure in chamber is more than pressure in the back pressure cavity, when the pressure in the compression chamber less than etc.
The check valve sheet is closed when pressure in the back pressure cavity.
Particularly, two linked holes are provided with the quiet disk, two linked holes are on the quiet disk
Central Symmetry is set.
Particularly, the screw compressor also includes Moving plate, and the back pressure cavity is positioned at the Moving plate away from the quiet disk
Side at.
Particularly, when the pressure of required balance is bigger the tracting pressuring hole along the molded line of the quiet disk closer to described quiet
The center of disk.
Particularly, 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 are provided with the quiet disk of the utility model screw compressor, are drawn
The drainage trough of pressure hole and linked hole composition is uncorrelated to Moving plate, will not produce tilting moment to Moving plate, and the stabilization of Moving plate is not influenceed
Motion, improves the reliability of screw compressor.
Brief description of the drawings
Fig. 1 is the sectional view of the screw compressor that the utility model preferred embodiment is provided；
Fig. 2 is the partial sectional view of the screw compressor that the utility model preferred embodiment is provided；
Fig. 3 is the explosive view of the quiet disk component that the utility model preferred embodiment is provided；
Fig. 4 is the upward view of the quiet disk that the utility model preferred embodiment is provided；
Fig. 5 is the top view of the quiet disk that the utility model preferred embodiment is provided.
In figure：
1st, quiet disk；2nd, back pressure cavity；3rd, compression chamber；4th, quiet disk cover plate；5th, Moving plate；6th, check valve sheet；11st, tracting pressuring hole；12nd, join
Through hole；13rd, noise elimination cavity；14th, transitional slope.
Specific embodiment
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by specific embodiment.
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 side away from quiet disk 1 of Moving plate 5.It is provided with quiet disk 1 and is drawn
The pressure linked hole 12 of hole 11 and at least one, one end UNICOM to compression chamber 3, the other end UNICOM to linked hole 12 of tracting pressuring hole 11；Connection
The UNICOM of through hole 12 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 the utility model screw compressor is not
It is opened on Moving plate 5, could realizes drainage without by Moving plate 5 and the cooperation of quiet disk 1, but by quiet disk 1 directly by pressure
Back pressure cavity 2 is caused from compression chamber 3, tilting moment will not be produced to Moving plate 5, the stable motion of Moving plate 5 is not influenceed, improve vortex
The reliability of compressor.
In order to reduce, eliminate in the 500-1000Hz pneumatic noises produced by the moment of drainage trough and the UNICOM of back pressure cavity 2,
Noise elimination cavity 13 is set on quiet disk 1.One end UNICOM of tracting pressuring hole 11 to compression chamber 3, other end UNICOM to noise elimination cavity 13；Linked hole 12
One end UNICOM is to noise elimination cavity 13, other end UNICOM to back pressure cavity 2.The concrete shape of noise elimination cavity 13 can be it is determined that the institute of back pressure cavity 2
Designed for the requirement for solving the noise after the ripple frequency characteristic of generation, can be cross section structure in a ring, may be used also
Be cross section be square, the structure of oval and other arbitrary shapes, only need the expansion length of the noise elimination cavity 13 to meet set
Meter deadening frequency band.
On the basis of said structure, screw compressor also includes quiet disk cover plate 4, and quiet disk cover plate 4 is covered on quiet disk 1
Side；Noise elimination cavity 13 is located between quiet disk cover plate 4 and quiet disk 1.That is, noise elimination cavity 13 is arranged on the top half of quiet disk 1, quiet disk cover plate
4 are covered on noise elimination cavity 13.The noise elimination cavity 13 is expanding reactive muffler, and its shape is mainly determined by frequency of noise elimination.
Pressure when Moving plate 5 and quiet disk 1 coordinate is 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 then is flow to by linked hole 12, arrow institute in whole stream such as Fig. 2 and Fig. 3
Show.
For mitigation of gases flowing velocity, pneumatic noise is further reduced, set between noise elimination cavity 13 and linked hole 12
Transitional slope 14.The one end of one end higher than its connection noise elimination cavity 13 of the connection linked hole 12 of transitional slope 14, air-flow is oblique along transition
Climb to slow down its velocity of liquid assets, reduce noise in slope 14.
On the basis of said structure, check valve sheet 6 is provided with tracting pressuring hole 11, when the pressure in compression chamber 3 is more than
Check valve sheet 6 is opened during pressure in back pressure cavity 2, unidirectional when the pressure in compression chamber 3 is less than or equal to pressure in back pressure cavity 2
Valve block 6 is closed, and can be avoided in back pressure cavity 2 in gas backflow to compression chamber 3.
The quantity of linked hole 12 is not limited on quiet disk 1, can only set a linked hole 12, its effect for being likewise supplied with water conservancy diversion
But effect is slightly worse；Preferably, two linked holes 12, two Central Symmetries of the linked hole 12 on quiet disk 1 are provided with quiet disk 1
Set.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 also more stable.
The position of tracting pressuring hole 11 size of pressure value required for back pressure cavity 2 determines that pressure if desired is bigger on quiet disk 1
Then tracting pressuring hole 11 along the molded line of quiet disk 1 closer to the center direction of the dotted line with arrow (along Fig. 4 move) of quiet disk 1.
Linked hole 12 is oblique relative to the axis of quiet disk 1, it is to avoid air-flow flings initiation noise, further reduces drainage
When pneumatic noise.
Note, above are only preferred embodiment of the present utility model and the know-why used.Those skilled in the art
It will be appreciated that the utility model is not limited to specific embodiment described here, can carry out for a person skilled in the art various
Significantly change, readjust and substitute without departing from protection domain of the present utility model.Therefore, although implement more than
Example is described in further detail to the utility model, but the utility model is not limited only to above example, is not taking off
In the case of conceiving from the utility model, more other Equivalent embodiments can also be included, and scope of the present utility model is by institute
Attached right is determined.
Claims (10)
1. a kind of screw compressor, including quiet disk (1), back pressure cavity (2) and compression chamber (3), it is characterised in that in the quiet disk
(1) tracting pressuring hole (11) and at least one linked hole (12) are provided with, one end UNICOM of the tracting pressuring hole (11) to the compression
Chamber (3), other end UNICOM to the linked hole (12)；Linked hole (12) UNICOM to the back pressure cavity (2).
2. screw compressor according to claim 1, it is characterised in that be provided with noise elimination cavity (13) on the quiet disk (1)；
One end UNICOM of the tracting pressuring hole (11) to the compression chamber (3), other end UNICOM to the noise elimination cavity (13)；The linked hole
(12) one end UNICOM to the noise elimination cavity (13), other end UNICOM to the back pressure cavity (2).
3. screw compressor according to claim 2, it is characterised in that the screw compressor also includes quiet disk cover plate
(4), the quiet disk cover plate (4) is covered in quiet disk (1) top；The noise elimination cavity (13) positioned at the quiet disk cover plate (4) and
Between the quiet disk (1).
4. screw compressor according to claim 2, it is characterised in that the cross section of the noise elimination cavity (13) in a ring,
Square or ellipse.
5. screw compressor according to claim 2, it is characterised in that in the noise elimination cavity (13) and the linked hole
(12) transitional slope (14) is provided between；One end that the transitional slope (14) connects the linked hole (12) connects higher than it
One end of the noise elimination cavity (13).
6. screw compressor according to claim 1, it is characterised in that in the tracting pressuring hole (11) or in the impulse
The end in hole (11) is provided with check valve sheet (6), when the pressure in the compression chamber (3) is more than in the back pressure cavity (2)
The check valve sheet (6) is opened during 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 during power.
7. the screw compressor according to any one of claim 1 to 6, it is characterised in that be provided with the quiet disk (1)
Two linked holes (12), Central Symmetry of two linked holes (12) on the quiet disk (1) is set.
8. the screw compressor according to any one of claim 1 to 6, it is characterised in that the screw compressor also includes
Moving plate (5), the back pressure cavity (2) is at the side away from the quiet disk (1) of the Moving plate (5).
9. the screw compressor according to any one of claim 1 to 6, it is characterised in that when the pressure of required balance is got over
When big the tracting pressuring hole (11) along the molded line of the quiet disk (1) closer to the center of the quiet disk (1).
10. the screw compressor according to any one of claim 1 to 6, it is characterised 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 |
|---|---|---|---|
| CN201621064013.6U CN206206152U (en) | 2016-09-19 | 2016-09-19 | Screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621064013.6U CN206206152U (en) | 2016-09-19 | 2016-09-19 | Screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206206152U true CN206206152U (en) | 2017-05-31 |
Family
ID=58760807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621064013.6U Expired - Fee Related CN206206152U (en) | 2016-09-19 | 2016-09-19 | Screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206206152U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286294A (en) * | 2016-09-19 | 2017-01-04 | 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 CN201621064013.6U patent/CN206206152U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286294A (en) * | 2016-09-19 | 2017-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Screw compressor |
| CN106286294B (en) * | 2016-09-19 | 2019-06-07 | 珠海格力电器股份有限公司 | Screw compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |