CN101649836B - Single screw mechanism used by single screw compressor with stream guidance spiral groove - Google Patents
Single screw mechanism used by single screw compressor with stream guidance spiral groove Download PDFInfo
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- CN101649836B CN101649836B CN 200910053766 CN200910053766A CN101649836B CN 101649836 B CN101649836 B CN 101649836B CN 200910053766 CN200910053766 CN 200910053766 CN 200910053766 A CN200910053766 A CN 200910053766A CN 101649836 B CN101649836 B CN 101649836B
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- single screw
- helix
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- spiral groove
- screw rod
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Abstract
The invention discloses a single screw mechanism used by a single screw compressor with a stream guidance spiral groove, comprising a single screw and a star wheel meshed with the single screw, wherein the sealed spiral line of the single screw can serve as the conductor spiral groove of the housing of the compressor; gas at the inlet of the compressor enters the adsorption cavity of the screw compressor along the stream guidance spiral groove so as to realize the purposes of reducing intake resistance loss, ensuring sufficient intake amount and improving the volumetric efficiency of the compressor.
Description
Technical field
The present invention relates to a kind of fluid machinery, concrete relate to the single screw mechanism used of a kind of single screw compressor.
Background technique
The gas-entered passageway design of single screw compressor all is that the cylinder of employing compressor is a complete inner cylindrical surface (d among Fig. 1
1), the back taper (β among Fig. 1) of dependence screw rod air inlet end face is realized radial and axial air inlet.For increase the radial air inlet aisle spare and reduce screw rod and cylinder wall surface between the shearing loss that produces owing to the existence of Lubricants, along the sealing helix, cylinder is designed to stepped shaft; That some that is in sealing helix front is subsided (C among Fig. 1 partly).Reach the purpose that increases the radial air inlet aisle spare.
In the cylinder of compressor, because suction port (3 among Fig. 1) is vertical with the screw rod center line, radial and axial intake resistance loss is large, affects the air inflow of compressor, has reduced the volumetric efficiency of compressor.Wherein among Fig. 11 ' be single screw rod, 2 ' be star-wheel, 3 ' be inlet hole.
Summary of the invention
Technical problem to be solved by this invention is, overcome problems of the prior art, a kind of single screw mechanism used by single screw compressor with stream guidance spiral groove is provided, this mechanism has a stream guidance spiral groove, the gas of compressor inlet enters the suction chamber of helical-lobe compressor along stream guidance spiral groove, reduce the intake resistance loss to reach, air inflow is sufficient, improves the purpose of compressor volume efficient.
Such in order to address the above problem technological scheme of the present invention:
Single screw mechanism used by single screw compressor with stream guidance spiral groove, comprise single screw rod and the star-wheel that meshes with single screw rod, it is characterized in that, the sealing helix of described single screw rod is as the leading line of the stream guidance spiral groove of compressor housing, in cylinder, along the sealing helix, cylinder is designed to stepped shaft, that some that is in sealing helix front is subsided (C among Fig. 2 is partly).The import of compressor is placed in is in that some (C among Fig. 2) that subsides before the sealing helix in the compressor housing.The bottom that subsides and inlet maximum diameter of hole identical (D among Fig. 2); The maximum diameter ф D of the top of the water conservancy diversion helix of inlet and inlet tangent (D among Fig. 2), the starting point of sealing helix is in the interior circular hole (d among Fig. 2 of screw rod housing
1); Top and the addendum line of the top line that seals the helix starting point as stream guidance spiral groove with inlet's water conservancy diversion helix.
The present invention not only can shorten the length of compressor housing, but also for the gas of realizing compressor inlet enters the suction chamber of helical-lobe compressor along stream guidance spiral groove, reduces the intake resistance loss to reach, and improves the purpose of compressor volume efficient.
Description of drawings
Describe the present invention in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the single screw meshing pair structural representation of prior art
Among the figure 1 '. single screw rod 2 '. star-wheel 3 '. inlet hole
d
1: the screw rod external diameter; β: the reversed cone angle of inlet end face; C: the part that subsides before the sealing helix.
Fig. 2: single screw meshing pair structural representation of the present invention
1. single screw rod 2. star-wheels 3. inlet holes among the figure
d
1: the screw rod external diameter; d
2: the star-wheel external diameter; A: the distance of screw rod center line and star-wheel center line; A: the star-wheel center line is to the distance of screw rod external diameter; β: the reversed cone angle of air inlet end face; △: the axial length of reversed cone angle; L: the axial length of spiral chute inner high voltage gas leakage; L
1: screw rod exhaust side axial length; L ': screw rod air inlet side shaft is to length; L
2: the star-wheel center line is to the distance of exhaust port center line; β: the reversed cone angle of inlet end face; C: the part that subsides before the sealing helix; D: inlet's maximum diameter.
Fig. 3 import stream guidance spiral groove of the present invention launches schematic representation
Among the figure: 1 ". calculate import stream guidance spiral groove unfolded drawing
2 ". actual import stream guidance spiral groove unfolded drawing
Y-axis screw rod outside diameter d
1With the intersection line apart from a of star-wheel center to the screw rod external diameter
Represent that when Y=0 the star-wheel center line is in the position of screw axial
S: on spiral chute, the arc length that turns over along a bit corresponding screw rod on the screw axial
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
In the present embodiment
The screw rod outside diameter d
1=230mm, the star-wheel outside diameter d
2=d
1=230mm, the distance A=184mm of screw rod center line and star-wheel center line, the star-wheel center line to the screw rod external diameter apart from a=69mm, star-wheel width b=34.5mm, screw head is counted Z
1=6, tooth number of star Z
2=11, screw rod exhaust side axial length L
1=92mm, screw rod air inlet side shaft is to length L '=69mm, prevent the axial length L=34.5mm of spiral chute inner high voltage gas leakage, the reversed cone angle β of air inlet end face=37 °, back taper axial length Δ=23mm, the star-wheel center line to the exhaust port centerline axis to distance L
2=55mm(sees Fig. 2).
The design of single-screw compressor housing import helix, the theory of engagement according to star-wheel and screw rod calculates, screw rod right side helix (suction side), and its helix extended to 96mm, (distance from the star-wheel center line to the import avris), then this helix is the sealing helix.For guaranteeing sealing, helix should be seen Fig. 3 to the equidistant mobile Δ y=10mm(of suction side).Helix right side (suction side) subsides H=50mm at distance center line Y
1The helix at '=61.78mm place begins Y
2The height of the import helix till the '=106.26mm from H=50mm gradually excessively to being zero.The helix of formation system (see among Fig. 3 A to view).The maximum diameter that draws thus inlet is that 330mm(sees D among Fig. 2).The import helix can be calculated as follows:
Helix is along the position of screw axis.
-α≤θ
2≤α
r
Wherein: a=69
b=34.5
The engagement pair velocity ratio
-α=-50 ° (about) leading edge of screw rod is extended to inlet, the corner of star-wheel.
When α=-25.353 a ° star-wheel tooth seals screw channel, closed angle
α
rThe corner of star-wheel when=64.6466 ° of star-wheel tooth right sides break away from screw channel
θ
2The star-wheel corner
Result of calculation sees Table 1
Table 1
| θ 2 | Y | Y | S |
| -49.1° | -106 | -116 | -87.38 |
| -48 | -102.41 | -112.41 | -83.33 |
| -46° | -96.26 | -106.26 | -75.97 |
| -45° | -93.40 | -103.40 | -72.29 |
| -40° | -80.44 | -90.42 | -53.89 |
| -35° | -69.37 | -79.371 | -35.50 |
| -30° | -59.76 | -69.76 | -17.10 |
| -25.3534° | -51.78 | -61.78 | 0 |
| -20° | -43.47 | -53.47 | 19.70 |
| -15° | -36.35 | -46.35 | 38.10 |
| -10° | -29.68 | -39.68 | 56.50 |
| -5° | -23.35 | -33.35 | 74.89 |
| 0° | -17.25 | -27.25 | 93.29 |
| 5° | -11.28 | -21.28 | 111.69 |
| 10° | -5.35 | -15.35 | 130.09 |
| 15° | 0.63 | -9.37 | 148.49 |
| 20° | 6.76 | -3.24 | 166.89 |
| 25° | 13.14 | 3.14 | 185.28 |
| 30° | 19.92 | 9.92 | 203.68 |
| 35° | 27.26 | 17.26 | 222.08 |
| 40° | 35.38 | 25.38 | 240.48 |
| 45° | 44.60 | 34.60 | 258.88 |
| 50° | 55.39 | 45.39 | 277.28 |
| 55° | 68.47 | 58.47 | 295.67 |
| 58° | 77.87 | 67.87 | 306.71 |
| 60° | 85.01 | 75.01 | 314.07 |
| 62° | 93.03 | 83.01 | 321.43 |
| 62.7° | 96.07 | 86.07 | 324.01 |
The import helix draws unfolded drawing by the numerical value that calculates and sees among Fig. 31 ", Y '=Y-Δ y gets Δ y=10mm, and the unfolded drawing of making by Y ' value is exactly actual import helix, i.e. water conservancy diversion helix sees among Fig. 32 ".
More than show and described basic principle of the present invention, major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (1)
1. with the single screw mechanism used by single screw compressor of stream guidance spiral groove, comprise single screw rod and the star-wheel that meshes with single screw rod, it is characterized in that, the sealing helix of described single screw rod is as the leading line of the stream guidance spiral groove of compressor housing, in cylinder, along the sealing helix, cylinder is designed to stepped shaft, that some that is in sealing helix front is subsided, the import of compressor is placed in is in that some that subsides before the sealing helix in the compressor housing; The bottom that subsides is identical with the inlet maximum diameter of hole; The maximum diameter (D) of the top of the water conservancy diversion helix of inlet and inlet is tangent; The starting point of sealing helix is in the interior circular hole of screw rod housing; Top and the addendum line of the top line that seals the helix starting point as stream guidance spiral groove with inlet's water conservancy diversion helix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910053766 CN101649836B (en) | 2009-06-25 | 2009-06-25 | Single screw mechanism used by single screw compressor with stream guidance spiral groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910053766 CN101649836B (en) | 2009-06-25 | 2009-06-25 | Single screw mechanism used by single screw compressor with stream guidance spiral groove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101649836A CN101649836A (en) | 2010-02-17 |
| CN101649836B true CN101649836B (en) | 2013-04-03 |
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ID=41672137
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910053766 Expired - Fee Related CN101649836B (en) | 2009-06-25 | 2009-06-25 | Single screw mechanism used by single screw compressor with stream guidance spiral groove |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871452A (en) * | 2010-07-06 | 2010-10-27 | 深圳市亚普精密机械有限公司 | Single-screw compressor for increasing displacement and improving volumetric efficiency |
| CN106762627B (en) * | 2017-01-23 | 2018-10-09 | 西北农林科技大学 | A kind of delivery port structure of CP types single-screw (single screw) pump |
| CN108953150B (en) * | 2018-07-04 | 2019-11-05 | 中国石油大学(华东) | A kind of single screw compressor of high interior volume specific ratio |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4484872A (en) * | 1982-01-14 | 1984-11-27 | Omphale S.A. | Globoid-worm machine with tapered screw clearance near high pressure end seal |
| EP0517250A1 (en) * | 1991-06-05 | 1992-12-09 | Daikin Industries, Limited | Single-screw compressor rotor construction |
| CN2363088Y (en) * | 1999-02-14 | 2000-02-09 | 佛山市禅山空气压缩机厂 | Single screw bolt air compressor |
| CN2427650Y (en) * | 1999-10-26 | 2001-04-25 | 查世樑 | Energy-saving single-screw rod cmpressor |
| CN201436393U (en) * | 2009-06-25 | 2010-04-07 | 上海孚创螺杆技术有限公司 | Single screw mechanism with diversion helical groove used for single screw compressor |
-
2009
- 2009-06-25 CN CN 200910053766 patent/CN101649836B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4484872A (en) * | 1982-01-14 | 1984-11-27 | Omphale S.A. | Globoid-worm machine with tapered screw clearance near high pressure end seal |
| EP0517250A1 (en) * | 1991-06-05 | 1992-12-09 | Daikin Industries, Limited | Single-screw compressor rotor construction |
| CN2363088Y (en) * | 1999-02-14 | 2000-02-09 | 佛山市禅山空气压缩机厂 | Single screw bolt air compressor |
| CN2427650Y (en) * | 1999-10-26 | 2001-04-25 | 查世樑 | Energy-saving single-screw rod cmpressor |
| CN201436393U (en) * | 2009-06-25 | 2010-04-07 | 上海孚创螺杆技术有限公司 | Single screw mechanism with diversion helical groove used for single screw compressor |
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|---|---|
| CN101649836A (en) | 2010-02-17 |
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