CN2763581Y - Screw compressor capable of reducing air displacement and keeping unchanged inner volume ratio - Google Patents
Screw compressor capable of reducing air displacement and keeping unchanged inner volume ratio Download PDFInfo
- Publication number
- CN2763581Y CN2763581Y CN 200420058055 CN200420058055U CN2763581Y CN 2763581 Y CN2763581 Y CN 2763581Y CN 200420058055 CN200420058055 CN 200420058055 CN 200420058055 U CN200420058055 U CN 200420058055U CN 2763581 Y CN2763581 Y CN 2763581Y
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- air displacement
- screw compressor
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- compressor
- volume ratio
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 42
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 12
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model relates to a screw compressor capable of reducing air displacement and keeping unchanged inner volume ratio. The utility model does not adopt the technique of frequency conversion, speed change, changing lengths of a rotor and a machine body, sliding valve regulation, etc. Cambered surfaces at the side of a driving rotor (3) and a driven rotor (4) on an inner volume ratio sliding valve (12) of the suction end of the compressor are partly cut and removed, the lengths of an adjusting block (13) or an adjusting ring (14) are lengthened at the same time, and other parts use the same technique. Thus, the utility model can decrease the self air displacement and not increase the manufacturing cost. The inner volume ratio of the compressor is constant, so the additional air suction lost power and the additional air discharging loss power do not exist. The self air displacement of the screw compressor can be decreased discretionarily at a range of 50% to 100%, so a plurality of air displacement assortments of the rotor diameter and the length specification of the rotor diameter are realized. Therefore, the development cost of the screw compressor is saved greatly.
Description
Affiliated technical field
The utility model relates to a kind of screw compressor, especially can reduce self air displacement and the constant screw compressor of interior volume specific ratio.
Background technique
Screw compressor mainly is made of several big parts such as intermeshing a pair of driving rotor (3) and driven rotor (4), suction end base (2), body (5) and exhausting end base (6) etc.Intermeshing a pair of driving rotor (3) has specific intermeshing convex-concave profile of tooth with driven rotor (4).The intermeshing a pair of driving rotor (3) of screw compressor utilized device in body produces periodic volume-variation to reach the effect of suction, compression and discharge gas medium when rotated with driven rotor (4).
The exhaust pressure of screw compressor is determined that by operating conditions the exhaust pressure of this moment and the exhaust pressure ratio of pressure of inspiration(Pi) are recently realized by internal volume, and be if both coincide, then energy-conservation; Interior volume specific ratio changes will cause the exhaust pressure ratio change, if both misfit, then many power consumptions.
In order to reduce the specification of screw type compressor rotor Tool Design and manufacturing as far as possible, 63,100,125,160,200,250,315,400,500,630,800mm people stipulate the compressor drum diameter series:, the slenderness ratio of rotor is generally 1.5, and air displacement series is 2 times of a last root diameter for next root diameter.Along with the increase of root diameter, the spacing of air displacement also just increases.
Screw compressor is after a kind of root diameter and length specification thereof are determined, its air displacement just only is defined as a kind.In order to adapt to the demand of different air displacemenies between two kinds of root diameters, reduce or improve its air displacement, prior art generally adopts Bian Frequency, speed change and technology such as change rotor and body length to reach a kind of root diameter and a plurality of air displacement kinds of length specification thereof.
The utility model patent ZL03254393.X screw compressor of air displacement " can reduce or improve self " implements to transform from the exhaust end of compressor to realize reducing self air displacement.
Bian Frequency technology be frequency by changing drive motor to change the rotating speed of drive motor, the rotating speed of compressor is changed, air displacement changes, yet people to pay a high price; Transmission technology is by overdrive gear rotating speed change, the air displacement of compressor to be changed, yet people also will pay a high price; For the consideration of price, frequency conversion and transmission technology generally are used to improve the air displacement of compressor, and converter technique more lays particular emphasis on the adjusting of air displacement; Can reduce or improve air displacement though change the technology of rotor and body length, but the cutter of the spray of airframe components and rotor processing all must redesign and make, owing to the reason rotor length of rotor rigidity can not be above 1.3 times, reduce or improve air displacement and all be restricted, people also will pay a high price; The guiding valve regulation technology can reduce air displacement, and regulation range is 15%～100%, and it is when regulating, and interior volume specific ratio diminishes, and makes energy consumption increase, and can only realize the air displacement adjusting that this specification compressor is in operation.
Summary of the invention
In order to solve after a kind of root diameter and length specification thereof are determined, screw compressor can only have a kind of problem of air displacement, the utility model provides a kind of screw compressor, this screw compressor is after a kind of root diameter and length specification thereof are determined, only the suction end at compressor changes individual part, just can reduce himself air displacement, realize a plurality of air displacement kinds of a kind of root diameter and length specification thereof.
The technological scheme that its technical problem that solves the utility model adopts is: do not adopt technology such as Bian Frequency, speed change, change rotor and body length and guiding valve adjusting, screw compressor only needs partly to cut interior volume specific ratio guiding valve (12) and lengthening adjustment piece (13) or adjust the length of enclosing (14) at the suction end of compressor, remaining parts is general, just can reduce himself air displacement, and its interior volume specific ratio is constant, realizes a plurality of air displacement kinds of a kind of root diameter and length specification thereof.
The utility model adopts in the cutting of interior volume specific ratio guiding valve (12) top of the suction end of compressor and removes the cambered surface that drives rotor (3) and driven rotor (4) side, lengthening is adjusted piece (13) or is adjusted the technology that the length of enclosing (14) reduces screw compressor self air displacement simultaneously, this technology does not increase manufacture cost, make the compressor interior volume specific ratio constant, there are not additional loss of suction merit and additional exhaust loss merit, can reduce screw compressor self air displacement in 100% the scope arbitrarily with being lower than being higher than 50%, and shorten rotor and relatively have more advanced with technology such as body length and shortening guiding valves, practicability and feasibility.
Shorten rotor and body length reduction screw compressor self air displacement technology dual mode is arranged: one is whole rotor and the body length of shortening, this mode all must redesign and make the spray of airframe components and the cutter of rotor processing, and manufacture cost increases greatly; It is two for prescinding the short body length of rotor length and pad on the basis of former compressor, manufacture cost has increase slightly, but its machine fixed end length and can fill up the restriction of length by compression can not reduce screw compressor self air displacement and be lower than 80%.
Shortening guiding valve reduces screw compressor self air displacement technology dual mode is arranged: one on guiding valve with the surface of contact place cancellation part of fixed end; Its two stroke for restriction guiding valve and fixed end surface of contact, these two kinds of mode manufacture costs all have increase slightly, but all restrictions of machine fixed end length by compression can only reduce screw compressor self air displacement below 70%, and have additional loss of suction merit and additional exhaust loss merit.
The beneficial effects of the utility model are to save the development cost of screw compressor greatly.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is an embodiment that can reduce the vertical section tectonic maps of the constant screw compressor of self air displacement and interior volume specific ratio.
Fig. 2 is another embodiment that can reduce the vertical section tectonic maps of the constant screw compressor of self air displacement and interior volume specific ratio.
Fig. 3 is the right sectional view that can reduce the constant screw compressor of self air displacement and interior volume specific ratio.
1. air-breathing end caps among the figure, 2. suction end cage 3. drives rotor, 4. driven rotor, 5. body, 6. exhausting end base, 7. exhaust end cap, 8. hand rest, 9. oily piston, 10. guiding valve guide rod, 11. guiding valves, 12. interior volume specific ratio guiding valves, 13. adjust pieces, and 14. adjust circle.
Embodiment
At first selected a kind of root diameter and length specification thereof carry out conventional design to screw compressor and produce a kind of screw compressor of basic air displacement.
Press Fig. 1 or Fig. 2 or Fig. 3 and remove the cambered surface that drives rotor (3) and driven rotor (4) side in the cutting of interior volume specific ratio guiding valve (12) top of the suction end of compressor, lengthening is adjusted piece (13) or is adjusted the length of enclosing (14) simultaneously, then can design and produce the screw compressor that is lower than basic air displacement; Along with adjusting piece (13) or adjusting the different length that encloses (14), then can design and produce the screw compressor series that is lower than basic air displacement.
In above-mentioned variation, the remaining parts of screw compressor is general.
Implementing an example of the present utility model is: basic air displacement 1100m
3/ h, expansion air displacement 1000m
3/ h, 950m
3/ h, 900m
3/ h, 850m
3/ h is the screw compressor series of totally five kinds.
Claims (1)
1. screw compressor, it is constant to reduce self air displacement and interior volume specific ratio, it is characterized in that: remove the cambered surface that drives rotor (3) and driven rotor (4) side in the cutting of interior volume specific ratio guiding valve (12) top of the suction end of compressor, lengthening is adjusted piece (13) or is adjusted the length of enclosing (14) simultaneously, and the remaining parts of screw compressor is general.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420058055 CN2763581Y (en) | 2004-12-30 | 2004-12-30 | Screw compressor capable of reducing air displacement and keeping unchanged inner volume ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420058055 CN2763581Y (en) | 2004-12-30 | 2004-12-30 | Screw compressor capable of reducing air displacement and keeping unchanged inner volume ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2763581Y true CN2763581Y (en) | 2006-03-08 |
Family
ID=36141127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420058055 Expired - Fee Related CN2763581Y (en) | 2004-12-30 | 2004-12-30 | Screw compressor capable of reducing air displacement and keeping unchanged inner volume ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2763581Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713410B (en) * | 2009-11-18 | 2011-08-31 | 西安交通大学 | Combined type energy regulating mechanism for screw compressor |
| CN101523046B (en) * | 2006-10-16 | 2012-06-13 | 开利公司 | Compressor slide valve support |
| CN105201789A (en) * | 2015-11-03 | 2015-12-30 | 干平 | Pneumatic valve and variable internal pressure ratio regulating device |
| CN107725368A (en) * | 2017-10-27 | 2018-02-23 | 无锡锡压压缩机有限公司 | A kind of helical-lobe compressor volume flow adjustment structure |
-
2004
- 2004-12-30 CN CN 200420058055 patent/CN2763581Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101523046B (en) * | 2006-10-16 | 2012-06-13 | 开利公司 | Compressor slide valve support |
| CN101713410B (en) * | 2009-11-18 | 2011-08-31 | 西安交通大学 | Combined type energy regulating mechanism for screw compressor |
| CN105201789A (en) * | 2015-11-03 | 2015-12-30 | 干平 | Pneumatic valve and variable internal pressure ratio regulating device |
| CN105201789B (en) * | 2015-11-03 | 2017-05-03 | 干平 | Variable internal pressure ratio regulating device |
| CN107725368A (en) * | 2017-10-27 | 2018-02-23 | 无锡锡压压缩机有限公司 | A kind of helical-lobe compressor volume flow adjustment structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060308 Termination date: 20101230 |