CN208203568U - A kind of screw compressor - Google Patents
A kind of screw compressor Download PDFInfo
- Publication number
- CN208203568U CN208203568U CN201820730583.7U CN201820730583U CN208203568U CN 208203568 U CN208203568 U CN 208203568U CN 201820730583 U CN201820730583 U CN 201820730583U CN 208203568 U CN208203568 U CN 208203568U
- Authority
- CN
- China
- Prior art keywords
- sealing strip
- volution trough
- screw compressor
- volution
- trough
- 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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Abstract
The utility model discloses a kind of screw compressors, it includes orbiter and fixed scroll, orbiter, fixed scroll vortex ring end face offer volution trough, the cross section of volution trough is in rectangle, it is provided with sealing strip in volution trough, the height of sealing strip is lower than the depth of volution trough, and sealing strip is that elastic component and its back side along its axial direction offer vent grooves, the radially opposite sides of vent grooves, which are formed with, extends out side wall, and extending out can be with the two sidewalls Interference contact of volution trough after side wall spreading.Above-mentioned screw compressor is optimized by the structure to sealing strip, while jacking up sealing strip, the two sidewalls for extending out side wall and volution trough are in close contact, and have filled up the radial clearance between sealing strip and volution trough, the effect for improving scroll plate end face seal improves the efficiency of compressor.
Description
Technical field
The utility model relates to the end face seal structures of a kind of screw compressor, especially its scroll plate.
Background technique
Since screw compressor has the characteristics that high-efficient, small in size, light weight, low noise, structure are simple, used extensively
In air-conditioning and refrigeration unit, have become one of the Main way of compressor development.Screw compressor mainly includes two phases
As scroll plate, be referred to as orbiter and fixed scroll, orbiter and fixed scroll are in 180 ° of angles cooperations one
Act the compression chamber for forming compressor.
It proposes to have opened up volution trough in the vortex ring end face of 2 ' of 1 ' of orbiter and fixed scroll currently, this field China is inside and outside
4 ', 4 ' of volution trough are opened up along the direction of vortex ring, and 4 both ends ' of volution trough are not open-minded, and floating seal item is installed in 4 ' of volution trough
3 ', when compressor movement, the high-pressure refrigerant that vortex ring head generates is poured in 4 ' of volution trough, and 3 ' of floating seal item is jacked up,
Contact 3 front ' of sealing strip with pairing vortex ring bottom, the end face seal played between 2 ' of 1 ' of orbiter and fixed scroll is made
With as shown in Fig. 6 to 8.
Although this structure can play certain sealing function, can not be kept away between 4 ' radial direction of 3 ' of sealing strip and volution trough
Exempt from there are gap, under gap is excessive or non-uniform situation, high-pressure refrigerant is from sealing strip two sides micro-leakage to low pressure
The high-low pressure of side, vortex ring two sides is ganged up, and compressor efficiency is caused to reduce, and when serious, 3 front ' of sealing strip cannot be formed with the back side
Pressure difference, cannot jack up 3 ' of sealing strip, and compressor cannot form end face seal.In addition, due to scroll plate sealing strip head to tail portion
Temperature has biggish difference, and the radial clearance of 4 ' of volution trough and 3 ' of sealing strip is inconsistent in each section, will lead to vortex ring head
Leakage, and vortex ring tail portion cannot effectively jack up, so that compressor efficiency reduces.
Therefore, it is desirable to its sealing structure is advanced optimized, to improve scroll plate end face seal effect.
Utility model content
The purpose of this utility model is to provide a kind of screw compressor, solve because there are between radial direction for sealing strip and volution trough
The above problem caused by gap.
In order to achieve the above object, the utility model uses following technical scheme:
A kind of screw compressor comprising orbiter and fixed scroll, orbiter, the vortex ring end face of fixed scroll are equal
Volution trough is offered, the cross section of volution trough is in rectangle, and sealing strip is provided in volution trough, and the height of sealing strip is lower than volution trough
Depth, sealing strip is that elastic component and its back side along its axial direction offer vent grooves, and the radially opposite sides of vent grooves are formed with
Side wall is extended out, extending out can be with the two sidewalls Interference contact of volution trough after side wall spreading.
Wherein, volution trough is opened up along the direction of vortex ring, and its tail end is closed, and head end is provided with venting channels, and ventilation is logical
The one end in road is connected to central high pressure chamber, and the other end is connected to the vent grooves of sealing strip in volution trough.
Wherein, venting channels are set as semicircle at the arc-shaped head position of vortex ring, and semicircular straight flange is provided with whirlpool
The medial surface of the arc-shaped head of circle is simultaneously connected to central high pressure chamber, the lateral surface shape of the arc-shaped head of semicircular arc side and vortex ring
It is connected at closure wall, and with volution trough.Avoid the first compression chamber and the phenomenon that the second compression chamber may gang up.
Wherein, the tail end of sealing strip and the tail end of volution trough fit closely.After preventing sealing strip from being jacked up, high-pressure medium from
Tail end leakage.
Wherein, the axial length of sealing strip and the length of volution trough are almost the same.Without extra clearance groove in axial direction, pass through
Venting channels are passed through high-pressure medium to closed vent grooves, and high-pressure medium loss is few, enable sealing strip head to tail portion
Uniformly jacked up, sealing strip front with scroll plate bottom surface is more reliable is adjacent to, improve scroll plate end face seal to greatest extent
Effect.
Wherein, the frontal width of sealing strip is slightly less than the width of volution trough.It is obstructed when sealing strip being avoided to rise.
Wherein, when not being passed through high-pressure medium, the back side width of sealing strip is slightly less than the width of volution trough.So that not being passed through height
When pressing medium, sealing strip is normally retracted.
Wherein, the cross sectional shape of vent grooves can be any in triangle, trapezoidal or semicircle, or extend out to be other
Shape.
Wherein, the depth of vent grooves is about the half of sealing strip height.
To sum up, the beneficial effects of the utility model are that compared with prior art, the screw compressor passes through to sealing strip
Structure optimize so that its back side offers vent grooves and two sides with side wall is extended out, high-pressure medium is made to enter sealing
More smooth when the back side, sealing strip head to tail portion can uniformly be jacked up, while sealing strip extends out side wall by spreading, with whirlpool
The two sidewalls of spin slot are in close contact, and have filled up the radial clearance between sealing strip and volution trough, high-pressure medium is closed at one
Vent grooves internal loss is few, makes sealing strip front and vortex ring bottom is more reliable is adjacent to, improve scroll plate to greatest extent
The effect of end face seal, to improve the efficiency of compressor.
Detailed description of the invention
Fig. 1 is the fixed scroll of screw compressor provided by the embodiment of the utility model and the assembling schematic diagram of sealing strip；
Fig. 2 is the cross-sectional view in Fig. 1 at A-A；
Fig. 3 is the fixed scroll of screw compressor provided by the embodiment of the utility model and the assembly section of orbiter
Figure；
Fig. 4 is the enlarged drawing in Fig. 3 at B；
Fig. 5 is that moving vortex circle and quiet vortex ring cooperate schematic diagram in Fig. 3；
Fig. 6 is the assembling schematic diagram of fixed scroll and sealing strip in the prior art；
Fig. 7 is the cross-sectional view in Fig. 6 at C-C；
Fig. 8 is the assembly profile of fixed scroll and orbiter in the prior art.
In Fig. 1-5:
1- orbiter；11- moving vortex circle；2- fixed scroll；The quiet vortex ring of 21-；22- volution trough；23- venting channels；24- envelope
Close wall；3- sealing strip；31- vent grooves；32- extends out side wall；The first compression chamber of 4-；The second compression chamber of 5-；
In Fig. 6-8:
1 '-orbiter；2 '-fixed scroll；3 '-sealing strip；4 '-volution trough；The concave surface 5 '-.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
It please refers to shown in Fig. 1-5, the present embodiment provides a kind of screw compressor, screw compressor mainly includes two similar
Scroll plate, be referred to as orbiter 1 and fixed scroll 2, the vortex ring of orbiter 1 and fixed scroll 2 revolves molded line parameter phase
With, 180 ° of phase angle difference, after the two cooperation assembling, can be formed it is several to closed crescent cavity volume, i.e. compression chamber, in
The cavity of heart gas vent is the central high pressure chamber of maximum pressure, or is the first compression chamber 4, abuts 4 periphery of the first compression chamber
Two crescent cavity volumes are the second compression chamber 5.
Its working principle is that: when eccentric shaft pushes the basic circle center of orbiter 1 to do circle around the basic circle center of fixed scroll 2
When all tracks move, these closed cavity volumes are expanded or shunk accordingly, are achieved in sucking, compression and the exhaust of gas
Purpose.The periphery gap in air-breathing aperture or the orbiting and fixed scroll that low-pressure gas is opened up from fixed scroll enters suction chamber, through pressing
It is discharged after contracting by the vent ports at 2 center of fixed scroll.
The structure of orbiter 1 and fixed scroll 2 is essentially identical, when carrying out end face seal, the moving vortex circle of orbiter 1
11 and the end face of quiet vortex ring 21 of fixed scroll 2 offer volution trough, sealing strip, cooperation assembling are provided in volution trough
When, the sealing strip of orbiter 1 is posted by the bottom surface of fixed scroll 2, and the sealing strip of fixed scroll 2 is posted by orbiter 1
Bottom surface.
It is described in detail by taking fixed scroll 2 as an example below.
The volution trough 22 of fixed scroll 2 is opened up along the direction of quiet vortex ring 21, and the cross section of volution trough 22 is in rectangle, is vortexed
Sealing strip 3 is provided in slot 22, the height of sealing strip 3 is slightly below the depth of volution trough 22.
Sealing strip 3 is that elastic component and its back side along its axial direction offer vent grooves 31, and the positive width of sealing strip 3 is less than
The cross sectional shape of the width of volution trough 22, the vent grooves 31 at 3 back side of sealing strip can be in triangle, trapezoidal or semicircle
One kind, or shape is extended out to be other, preferably set trapezoidal for vent grooves 31 herein, so that the radial direction of vent grooves 31
Two sides, which are formed with, extends out side wall 32, and when sealing strip 3 is not passed through high-pressure medium, the spacing for extending out side wall 32 is slightly less than volution trough 22
Width, and 31 depth of vent grooves is about the half of 3 height of sealing strip, when so that sealing strip 3 being jacked up, vent grooves 31 do not surpass
The end face of volution trough 22 out avoids dielectric leakage at tail end.
The axial length and volution trough 22 of sealing strip 3 are consistent, without extra clearance groove, the tail end of volution trough 22 in axial direction
Closure, head end are provided with venting channels 23, and venting channels 23 are recessed by central high pressure chamber and the ventilation of sealing strip 3 in volution trough 22
Slot 31 is connected to.
It should be noted that the vortex ring head of two scroll plates is generally arc-shaped, has directly set in the prior art
It is set to 5 ' of concave surface (as shown in Figure 6), so that the setting that central high pressure chamber is connected to vent grooves, when being likely to result in compression
One compression chamber 4 is ganged up with the second compression chamber 5, and the case where there are at leakage.
Therefore the present embodiment proposes to set semicircle according to the arc-shaped head of vortex ring for venting channels 23, it is semicircular straight
While be provided with the medial surface of the arc-shaped head of quiet vortex ring 21 and be connected to central high pressure chamber, semicircular arc side and quiet vortex ring 21
The lateral surface of arc-shaped head forms closure wall 24 and is connected to volution trough 22.The presence of closure wall 24 can effectively prevent the first pressure
Contracting chamber 4 is ganged up with the second compression chamber 5, improves compressor efficiency.
It is passed through high-pressure medium to vent grooves 31 by venting channels 23, the high-pressure medium of the present embodiment refers to high-pressure refrigeration
Agent, 3 back side stress of sealing strip are jacked up, while extending out 32 stress of side wall by spreading, and the two sidewalls interference with volution trough 22 connects
Touching, to form closed medium channel, high-pressure medium loss is few, tail end can be swimmingly reached from head end, so that sealing strip 3
Head to tail portion can uniformly be jacked up, the front of sealing strip 3 with scroll plate bottom surface is more reliable is adjacent to, improve whirlpool to greatest extent
The effect of capstan end face seal.
The screw compressor at least has a characteristic that
1) bottom of sealing strip opens up vent grooves, smooth, the sealing strip head to tail portion so that the back side of sealing strip is pressurized
It can uniformly be jacked up, integral sealing effect is more preferable；
2) the micro spreading after extending out side wall compression of sealing strip two sides, so that sealing strip and the linear sealing of volution trough radial direction, high
It presses medium few in closed vent grooves internal loss, makes sealing strip front and vortex pan bottom is more reliable is adjacent to；
3) semicircular venting channels, so that retaining certain wall thickness on the outside of vortex ring head, venting channels connect sealing strip
The back side vent grooves, avoid the first compression chamber and the phenomenon that the second compression chamber is ganged up, improve the efficiency of compressor.
To sum up, above-mentioned screw compressor is optimized by the structure to sealing strip, so that its back side offers ventilation
Groove and two sides, which have, extends out side wall, keeps high-pressure medium more smooth when entering the sealing strip back side, sealing strip head to tail portion energy
Uniformly jacked up, while sealing strip extends out side wall by spreading, is in close contact with the two sidewalls of volution trough, filled up sealing strip with
Radial clearance between volution trough, high-pressure medium is few in a closed vent grooves internal loss, makes sealing strip front and whirlpool
Bottom is more reliable is adjacent to for circle, the effect of scroll plate end face seal is improved to greatest extent, to improve the effect of compressor
Rate.
Above embodiments only elaborate the basic principles and features of the present invention, and the utility model is not by above-mentioned example
Limitation, on the premise of not departing from the spirit and scope of the utility model, the present invention has various changes and changes, these changes
Change and change is fallen within the scope of the claimed invention.The utility model requires protection scope is wanted by appended right
Ask book and its equivalent thereof.
Claims (9)
1. a kind of screw compressor, including orbiter (1) and fixed scroll (2), the orbiter (1), fixed scroll (2)
Vortex ring end face offer volution trough (22), the cross section of the volution trough (22) is in rectangle, is set in the volution trough (22)
It is equipped with sealing strip (3), the height of the sealing strip (3) is lower than the depth of the volution trough (22), which is characterized in that
The sealing strip (3) is elastic component and its back side offers vent grooves (31) along its axial direction, the vent grooves (31)
Radially opposite sides be formed with and extend out side wall (32), described extend out can be with the two sides of the volution trough (22) after side wall (32) spreading
Wall Interference contact.
2. screw compressor according to claim 1, it is characterised in that: the volution trough (22) is opened along the direction of vortex ring
And if its tail end closure, head end are provided with venting channels (23), one end of the venting channels (23) and central high pressure chamber company
Logical, the other end is connected to the vent grooves (31) of sealing strip (3) in volution trough (22).
3. screw compressor according to claim 2, it is characterised in that: arc of the venting channels (23) in the vortex ring
Be set as semicircle at shape head position, the semicircular straight flange be provided with the medial surface of the arc-shaped head of the vortex ring and with
The lateral surface of the arc-shaped head of the central high pressure chamber connection, the semicircular arc side and the vortex ring forms closure wall
(24), it and with the volution trough (22) is connected to.
4. screw compressor according to claim 3, it is characterised in that: the tail end and the vortex of the sealing strip (3)
The tail end of slot (22) fits closely.
5. screw compressor according to claim 1, it is characterised in that: the axial length of the sealing strip (3) with it is described
The length of volution trough (22) is consistent.
6. screw compressor according to claim 1, it is characterised in that: the frontal width of the sealing strip (3) is less than institute
State the width of volution trough (22).
7. screw compressor according to claim 1, it is characterised in that: when not being passed through high-pressure medium, the sealing strip (3)
Back side width be less than the volution trough (22) width.
8. screw compressor according to claim 1, it is characterised in that: the cross sectional shape of the vent grooves (31) is three
It is any in angular, trapezoidal or semicircle.
9. screw compressor according to claim 1, it is characterised in that: the depth of the vent grooves (31) is described close
The half of strip of paper used for sealing (3) height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820730583.7U CN208203568U (en) | 2018-05-16 | 2018-05-16 | A kind of screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820730583.7U CN208203568U (en) | 2018-05-16 | 2018-05-16 | A kind of screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208203568U true CN208203568U (en) | 2018-12-07 |
Family
ID=64517261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820730583.7U Expired - Fee Related CN208203568U (en) | 2018-05-16 | 2018-05-16 | A kind of screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208203568U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425845A (en) * | 2018-05-16 | 2018-08-21 | 上海加冷松芝汽车空调股份有限公司 | A kind of screw compressor |
-
2018
- 2018-05-16 CN CN201820730583.7U patent/CN208203568U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425845A (en) * | 2018-05-16 | 2018-08-21 | 上海加冷松芝汽车空调股份有限公司 | A kind of 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181207 Termination date: 20210516 |