CN102465880A - Volume ratio adjusting mechanism of spiral compressor - Google Patents
Volume ratio adjusting mechanism of spiral compressor Download PDFInfo
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- CN102465880A CN102465880A CN2010105318652A CN201010531865A CN102465880A CN 102465880 A CN102465880 A CN 102465880A CN 2010105318652 A CN2010105318652 A CN 2010105318652A CN 201010531865 A CN201010531865 A CN 201010531865A CN 102465880 A CN102465880 A CN 102465880A
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Abstract
The invention relates to a volume ratio adjusting mechanism of a spiral compressor. The volume ratio adjusting mechanism is provided with a rotor chamber, wherein a rotor hole path is arranged on the internal wall surface of the rotor chamber, so that a pair of rotors can be engaged with each other to rotate after being arranged; a sliding valve is arranged at one side of the rotor, and can be used for controlling a volume ratio through the axial displacement; a check valve block is arranged on a sliding valve moving path, and can be used for adjusting the axial position of the sliding valve; a fulcrum shaft is arranged at one end of the check valve block, and is used for controlling the axial displacement of the check valve block; and the fulcrum shaft which is used for pushing the check valve block to move is arranged in an eccentric manner to ensure that the check valve block can be fixed without shaking during the axial displacement. The volume ratio adjusting mechanism has the beneficial effects that: the check valve block displaces more stably, and cannot shake, and a component which is used for controlling the positioning of the check valve block is easy to process.
Description
Technical field
The present invention relates to a kind of screw compressor, relate in particular to a kind of volume ratio regulating mechanism of screw compressor.
Background technique
General screw compressor mainly in the shell side of compressor, is provided with two mutual parallel axis holes, and each axis hole provides a pair of cylindrical rotor installing fixing respectively; The rotor of this screw compressor; Generally have and form rotor circumference and the extended blade and the groove of shape in the shape of a spiral; During rotation; See through that two rotors are meshing with each other and,, be formed on a series of change in volume between the rotor with corresponding groove on another rotor of rotor blade engagement with the screw-like blade interlock that closely cooperates.When rotor in continuous rotation process, see through the continuous variation of volume between blade, progressively reach the compression of gas, again the opposite end of compressed gas to shell discharged at last.
Above-mentioned rotor, one of which side are to be provided with one can make the guiding valve that moves axially, by the axial position of adjustment guiding valve, can determine the delivery space ratio of pressurized gas; And being provided with one again at an end of guiding valve can end the valve piece in order to what adjust its axial position.
Screw compressor of the prior art, the U.S. the 6th, 409 shown in Figure 1A; No. 490 patent cases, this U.S. the 6th, 409; No. 490 the patent case discloses a pair of convex shape lining 11,21 of being located at the rotor chamber inwall; This convex shape lining 11,21 mainly provides the rotating shaft of rotor to pass through, and in order to assist the location to end the valve piece, so that the position of stable control guiding valve.
Please join shown in Figure 1B, this convex shape lining 11,21 comprises the convex pipe part 13,23 that dull and stereotyped 12,22 and one a white dull and stereotyped end face stretches out, and the central authorities of lining 11,21 are provided with to bore a hole and 14,24 pass through for the rotating shaft of rotor.
But find through manufacturing test on the spot, because convex shape lining 11 is to form the convex pipe part 13 with a lateral depth in addition again in the side end face of flat board.So will make convex shape lining 11 when manufacturing; Not only need consider simultaneously to inscribe between the concentric circle of dull and stereotyped external diameter and convex pipe part external diameter; Increase the degree of difficulty of processing, and influence dull and stereotyped external diameter easily and end the control in crack between the valve piece, and then influence ends the stability of valve piece.
In addition, the U.S. the 6th, 409; No. 490 the patent case discloses; It is located at guiding valve 20 in addition end end valve piece 25 be receive one be located at its circle centre position 10 promotions of fulcrum because this fulcrum 10 is positioned at the only center of circle of valve piece 25, so can't be as being a kind of mechanism that the valve piece rocks or rotates that prevents to end; So when promoting to end 25 displacements of valve piece with fulcrum 10; End valve piece 25 and can easily in shifting process, produce and rock, therefore compressor is easy to generate different sound, severe patient even cause and end the valve piece and rotor interferes with each other friction.
Summary of the invention
The technical issues that need to address of the present invention have provided a kind of volume ratio regulating mechanism of screw compressor, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the present invention realizes through following technological scheme:
The present invention includes: be provided with a rotor chamber; Described rotor chamber internal face is provided with the rotor duct, for getting engagement rotation relatively after a pair of rotor installing; In a side of rotor, be provided with one again and can see through axially displaced guiding valve with control volume ratio; On the path that guiding valve moves, be provided with one again and can adjust the only valve piece of slide valve spindle to the position; It is axially displaced to control it that a said end that ends the valve piece is provided with fulcrum; Should be set for the eccentric in order to the fulcrum that promotes only valve piece displacement, do not rock in order to provide to keep fixing when only the valve piece is axially displaced.
Compared with prior art, the invention has the beneficial effects as follows: make that the displacement of valve piece only is more stable does not rock, and in order to control only the assembly of valve piece location have the characteristic of easy processing.
Description of drawings
Figure 1A is the sliding valve structure section diagrammatic sketch that the 6th, 409, No. 490 patent cases of the U.S. disclose compressor in the existing technology.
Figure 1B is the three-dimensional diagrammatic sketch that the 6th, 409, No. 490 patent cases of the U.S. disclose the lining of compressor in the existing technology.
Fig. 2 does not install for the present invention's compressor drum is indoor and establishes the preceding plan view of lining.
Fig. 3 is the present invention's male and female rotor engaged plan view.
Fig. 4 is the axial section of the present invention's compressor.
Fig. 5 is the plan view after lining is established in the present invention's the indoor installation of compressor drum.
Fig. 6 is the planimetric map and the sectional arrangement drawing of the present invention's lining.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
The present invention's main purpose is in the improvement that a kind of screw compressor volume ratio regulating mechanism is provided, and makes that the displacement of valve piece only is more stable does not rock, and in order to control only the assembly of valve piece location have the characteristic of easy processing.
Improvement according to the present invention's screw compressor volume ratio regulating mechanism; It ends the valve piece is to receive an eccentric fulcrum that is provided with to promote, and cooperates and is located at the only plate pad of valve piece one end, because can control plate pad easily and end the gap between the valve piece; Do not rock so can not produce in the time of can guaranteeing only valve piece displacement; Make the control of volume ratio certain more easily, compressor can not produce different sound, is the present invention's a time purpose.
Improvement according to the present invention's screw compressor volume ratio regulating mechanism; It is plate through pad is changed into; Make pad add the size that only need consider its external diameter man-hour; Process simple and easy relatively and tolerance is controlled more precisely, can avoid that the convex shape lining adds the problem that need consider too much combined tolerances accumulative total man-hour in the existing technology, be the present invention's a purpose again.
According to the improvement of the present invention's screw compressor volume ratio regulating mechanism because that pad changes into is plate, pad can be directly as the interface module of rotor end-face and rotor chamber inwall; Because the effect of pad is merely effective clearance fixing and that keep and end the valve piece; Under the preceding topic of easily processing, if the rotor chamber inwall is when causing error excessive because of machining deviation, can through the thickness of pad adjust and rotor between the gap; Improve compressor efficiency, be the present invention's another purpose.
Improvement according to the present invention's screw compressor volume ratio regulating mechanism; Because pad is the plate of processing easily; When compressor causes rotor and plate pad to touch because of improper use; Directly change the gap that pad can be kept rotor, can exempt the essential cost and inconvenience of changing compressor case in the existing technology, be the present invention's another purpose.
The improvement of the present invention's screw compressor volume ratio regulating mechanism; As shown in Figure 2; This screw compressor 3; Its enclosure is provided with two rotor shaft hatchs 31,32, and after providing male rotor 41 and mother rotor 51 (as shown in Figure 3) to pack into, male rotor 41 and mother rotor 51 are by the rotation that is meshing with each other of groove and vane sheet.
Please with reference to shown in Figure 4; Before male rotor 41 and mother rotor 51 are packed screw compressor 3 inside into; At rotor chamber 30 inwall front ends, promptly be positioned at rotor shaft hatch 31,32 places, respectively being provided with one can be in order to the lining 42,52 (as shown in Figure 5) that is attached at axis hole 31,32 walls.
Please with reference to shown in Figure 6; This said lining 42,52; Be the planar of non-circular geometric face, it cuts edge 421,521 to respectively forming one by the place, perforation 422,522 is set between wherein; This perforation 422,522 and rotor shaft hatch 31,32 communicate, and the rotating shaft of male rotor 41 and mother rotor 51 are got pass simultaneously perforation 422,522 and rotor shaft hatch 31,32 and fix.
As shown in Figure 5, after lining 42,52 was mounted on the rotor chamber internal face, it was the gap that is keeping quite small with ending valve piece 6.And owing to lining 42,52 designs for planar; Whether it adds only need consider man-hour to remain within the standard clearance with the distance of ending valve piece 6 and gets final product; Compared to convex shape lining of the prior art; The control of fabrication and processing degree of difficulty and tolerance etc. all can be simplified a lot, and therefore, this flat lining 42,52 provides easily precisely control to end the advantage that valve piece 6 is located.
Please continue with reference to shown in Figure 4, the improvement of the present invention's screw compressor volume ratio regulating mechanism, the fulcrum 61 that further makes adjustment end valve piece 6 positions is set for the eccentric.Through the fulcrum 61 of this eccentric setting, when promoting limited slip block 6 displacements, can avoid the center of circle to promote to be easy to generate the problem of rocking, the only characteristics of valve piece 6 stable location further are provided.
Therefore, as mentioned above, see through the fulcrum 61 of plate lining 42,52 and eccentric setting,, perhaps in the rotor operation process, all can be maintained fixed, do not rock, and then promote the precision of guiding valve control no matter only valve piece 6 front and back displacement is provided.
Again, additional disclosure is because that lining 42,52 changes into is plate, makes and the gap of rotor tip and rotor chamber inwall can adjust through the thickness of lining 42,52.Even, when rotor in use, produce improper contact or when interfering because of improper use or external force factor cause rotor tip and rotor chamber, also can be through the finishing of processing again to lining 42,52, perhaps more resleeve 42,52 is improved.These are modified or change processing of lining, all because of lining change easy processing into plate simplify relatively many.
The above is merely the best specific embodiment of the present invention, but the present invention's structure characteristics is not limited thereto, any be familiar with this skill in field of the present invention, can think easily and variation or modification, all can be encompassed in the claim protection domain of the present invention.
Claims (3)
1. the volume ratio regulating mechanism of a screw compressor comprises: be provided with a rotor chamber; Described rotor chamber internal face is provided with the rotor duct, for getting engagement rotation relatively after a pair of rotor installing; In a side of rotor, be provided with one again and can see through axially displaced guiding valve with control volume ratio; On the path that guiding valve moves, be provided with one again and can adjust the only valve piece of slide valve spindle to the position; It is characterized in that: it is axially displaced to control it that a said end that ends the valve piece is provided with fulcrum; Should be set for the eccentric in order to the fulcrum that promotes only valve piece displacement, do not rock in order to provide to keep fixing when only the valve piece is axially displaced.
2. the volume ratio regulating mechanism of screw compressor according to claim 1; It is characterized in that: said rotor duct internal face is provided with one group again can end the lining that the valve piece rocks in order to restriction; This lining is a non-circular geometric face, and it is to respectively forming a side cut by the place, perforation is set between wherein; Its perforation communicates with the rotor duct, the rotating shaft of rotor is got pass simultaneously to bore a hole and rotor duct and fixing; And this lining is being installed fixing back and is being ended valve piece maintenance micro-gap, and this lining is a planar.
3. the volume ratio regulating mechanism of a screw compressor, comprising: be provided with a rotor chamber, the rotor chamber internal face is provided with the rotor duct, for after a pair of rotor installing engagement rotation relatively; In a side of rotor, be provided with one again and can see through axially displaced guiding valve with control volume ratio; Can adjust the only valve piece of slide valve spindle and on the path that guiding valve moves, be provided with one to the position; Said rotor duct internal face is provided with one group again can end the lining that the valve piece rocks in order to restriction; This lining is a non-circular geometric face; It is to respectively forming a side cut by the place, perforation is set between wherein, and its perforation and rotor duct communicate; The rotating shaft of rotor is got pass perforation simultaneously and fix, and this lining is at fixing back of installing and valve piece maintenance micro-gap only with the rotor duct; It is characterized in that: said lining is a planar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105318652A CN102465880A (en) | 2010-11-04 | 2010-11-04 | Volume ratio adjusting mechanism of spiral compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105318652A CN102465880A (en) | 2010-11-04 | 2010-11-04 | Volume ratio adjusting mechanism of spiral compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102465880A true CN102465880A (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105318652A Pending CN102465880A (en) | 2010-11-04 | 2010-11-04 | Volume ratio adjusting mechanism of spiral compressor |
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| CN (1) | CN102465880A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2156438A (en) * | 1984-02-24 | 1985-10-09 | Sabroe & Co As | Meshing-screw rotary gas-compressor |
| GB2282642A (en) * | 1993-10-07 | 1995-04-12 | Howden Compressors Ltd | Variable volume screw compressor |
| JP3214100B2 (en) * | 1992-10-15 | 2001-10-02 | ダイキン工業株式会社 | Screw compressor capacity control device |
| US6409490B1 (en) * | 2001-05-25 | 2002-06-25 | York International Corporation | Rotary screw compressor with slide valve and slide stop guidance bushings |
| WO2007128308A1 (en) * | 2006-05-04 | 2007-11-15 | Johnson Controls Denmark Aps | Screw compressor with rotor endplates |
-
2010
- 2010-11-04 CN CN2010105318652A patent/CN102465880A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2156438A (en) * | 1984-02-24 | 1985-10-09 | Sabroe & Co As | Meshing-screw rotary gas-compressor |
| JP3214100B2 (en) * | 1992-10-15 | 2001-10-02 | ダイキン工業株式会社 | Screw compressor capacity control device |
| GB2282642A (en) * | 1993-10-07 | 1995-04-12 | Howden Compressors Ltd | Variable volume screw compressor |
| US6409490B1 (en) * | 2001-05-25 | 2002-06-25 | York International Corporation | Rotary screw compressor with slide valve and slide stop guidance bushings |
| WO2007128308A1 (en) * | 2006-05-04 | 2007-11-15 | Johnson Controls Denmark Aps | Screw compressor with rotor endplates |
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Application publication date: 20120523 |