CN101832267A - Energy-saving single-screw compressor - Google Patents
Energy-saving single-screw compressor Download PDFInfo
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- CN101832267A CN101832267A CN201010162557A CN201010162557A CN101832267A CN 101832267 A CN101832267 A CN 101832267A CN 201010162557 A CN201010162557 A CN 201010162557A CN 201010162557 A CN201010162557 A CN 201010162557A CN 101832267 A CN101832267 A CN 101832267A
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- tooth
- star
- wheel
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- screw compressor
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Abstract
The invention provides a single-screw compressor. The tooth form of a star wheel thereof is a reverse bevel edge with a tooth top wider than a dedendum width. The star wheel tooth of the single-screw compressor of the invention adopts a unique shape and greatly increases the volume of a screw channel under the condition of slightly increasing the length of a meshing pair leakage line, thus reducing the leakage rate of the unit air displacement of the compressor, lowering the air displacement loss of the compressor and improving the efficiency of the compressor. The single-screw compressor of the invention can be widely applied in various industries requiring compressors.
Description
Technical field
The invention belongs to the helical-lobe compressor field, relate to a kind of energy-saving single-bolt compressor particularly.
Background technique
Single screw compressor is a kind of novel rotary compressor tool, and its structure is very simple, has only a screw rod and several star-wheels.Single screw compressor advantage in theory is a lot, have a series of incomparable advantage such as volume is little, capacity is big, pressure ratio is high, noise is low, vibrations are little, the pulsation of giving vent to anger is little, can satisfy the requirement of all trades and professions, be the desirable upgrading regeneration product of other form compressor.
The efficient of single screw compressor is controlled by to a great extent the back lash of screw channel and star-wheel flank.Because there are the gap in screw channel and star-wheel flank, the high pressure air cognition that is compressed is leaked to the low-pressure gas that is not compressed by this gap, thus the loss compression work, the efficient of reduction compressor.
There is the gap between screw channel and the star-wheel flank, mainly contains two reasons.The first, screw channel is a pair of engagement pair that higher relative tangential velocity is arranged with the star-wheel flank, needs certain clearance and guarantees under the normal situation and have under the situation of temperature variation engagement pair normally to work; The second, because many difficulties that screw channel and star-wheel flank exist in processing, general manufacturing process can't guarantee that at all screw channel and star-wheel flank reach the engagement of no gap.In addition, even engagement pair can guarantee not have fully the gap engagement at initial operating stage, but after wearing and tearing after a while, still the back lash can appear.
The existence of back lash makes the leakage rate of compressor unit's air displacement increase, thereby the exhaust loss increase of compressor, compressor efficiency are reduced.
Summary of the invention
Based on above-mentioned technical problem, energy-saving single-bolt compressor of the present invention has been proposed, its purpose is by changing the shape of single screw compressor star-wheel tooth, under the situation of a small amount of increase engagement pair leaky line length, increase the volume of screw channel biglyyer, thereby reduce the leakage rate of compressor unit's air displacement, reduce the exhaust loss of compressor, improve the efficient of compressor.
Single screw compressor of the present invention comprises a screw rod and several star-wheels, and characteristics are that each star-wheel tooth of its star-wheel is the tooth top anti-hypotenuse shape wideer than tooth root.
Wherein, the flank limit of described star-wheel tooth (AF or DE) is straight line, and the intersection point at the bottom of described flank limit and the tooth is tooth base angle point (F or E).
The flank limit of described star-wheel tooth (AF or DE) is positioned between the elongation line of line (OF or OE) of the imaginary line parallel with the tooth center line (BF or CE) and star-wheel central point (O) and tooth base angle point (F or E).
In the described single screw compressor, the two flank limits (AF and DE) of described star-wheel tooth are with respect to tooth center line symmetry; Perhaps, the two flank limits (AF and DE) of described star-wheel tooth are asymmetric with respect to the tooth center line, but each star-shaped teeth shape is identical and laying in the same way.
In the above-described single screw compressor, the tip curve of each tooth of its star-wheel (camber line AD) all is the circular arcs on the same circle.
Adopt above scheme, compare with existing single screw compressor, under same back lash, use anti-hypotenuse profile of tooth proposed by the invention, the per unit air displacement of compressor has lower leakage rate, and the exhaust loss of compressor is less, and efficient is higher.And, under the situation that the compressor volume does not increase, can further increase the air displacement of compressor.
Description of drawings
Fig. 1 is the schematic representation of the rack tooth star-wheel of existing single screw compressor.
Fig. 2 is the schematic representation of the hypotenuse dental star wheel of existing single screw compressor.
Fig. 3 is the schematic representation of the anti-hypotenuse dental star wheel of single screw compressor of the present invention.
Fig. 4 is the schematic representation that the work tooth of anti-hypotenuse dental star wheel in the single screw compressor of the present invention is arranged in the situation of screw rod.
Fig. 5 is the schematic representation that the anti-hypotenuse dental star wheel on asymmetric flank limit is arranged in the single screw compressor of the present invention.
Embodiment
Fig. 1 and Fig. 2 are respectively the rack tooth star-wheel of existing single screw compressor and the schematic representation of hypotenuse dental star wheel.In order fully to enlarge the toothed area of star-wheel tooth, the existing between cog spacing of star-wheel at the bottom of tooth all has been compressed to minimum limit.So situation and the existing star-wheel of the star-wheel of single screw compressor of the present invention at the bottom of tooth do not done difference.
Referring to illustrated in figures 1 and 2, from the bottom of the tooth to tooth top, existing star-wheel keeps the constant or facewidth of the facewidth to narrow down gradually, that is, the addendum width L of existing star-wheel work tooth
hBe less than or equal to tooth bottom width degree L
b
The anti-hypotenuse dental star wheel construction of the single screw compressor that the present invention proposes as shown in Figure 3 and Figure 4, wherein She Ji anti-hypotenuse tooth is that the facewidth is broadened to tooth top (as A, D) gradually from (as F, E) at the bottom of the tooth, promptly, different with existing star-wheel work profile of tooth, addendum width L of the present invention
hGreater than tooth bottom width degree L
bIn addition, star-wheel flank sideline (as AF and DE) remains straight line; And the addendum line of all teeth (camber line AD) is a part of circular arc of same circle.
Among the present invention, on the basis of satisfying the anti-hypotenuse design of described star-wheel tooth, the position on flank limit can change, AF or DE can be positioned at the imaginary line parallel (referring to BF or the CE of Fig. 4) and star-wheel central point (referring to the O point of Fig. 4) and tooth base angle point (F or E) with the tooth center line line (OF or OE) elongation line (comprising this elongation line) between any one position.
In the present invention, the shape that is arranged in each the star-wheel tooth on the star-wheel is identical.Further, the two flank limits (AF and DE) of each star-wheel tooth can be (the equating with ∠ DEC as ∠ AFB among Fig. 4) of symmetry with respect to the tooth center line, but also can be asymmetric (∠ AFB and ∠ DEC are unequal among Fig. 4); In the asymmetric situation in two flank limits of star-wheel tooth, each star-wheel tooth should equidirectional laying (referring to Fig. 5).
Fig. 4 represents that also the work tooth of anti-hypotenuse dental star wheel of the single screw compressor of present embodiment is arranged in the schematic representation of the situation of screw rod.Wherein, label 1 expression star-wheel, label 2 expression screw rods.FB, BC, CE are the teeth outline of existing straight flange profile of tooth star-wheel, and the teeth outline of FA, ABCD, the DE anti-hypotenuse profile of tooth that to be present embodiment propose.The dash area of label 3,4 expressions is flank of tooth areas that the anti-hypotenuse star-wheel tooth of present embodiment increases than existing straight flange star-wheel tooth.
In the present embodiment, the interior limit position of tooth limit, the left side straight line AF of star-wheel tooth is the BF parallel with the tooth center line; Outer limit position is the elongation line of the line OF of star-wheel central point O and tooth base angle point F.Equally, the interior limit position of tooth limit, the right side straight line DE of the star-wheel tooth of present embodiment is the CE parallel with the tooth center line; Outer limit position is the elongation line of the line OE of star-wheel central point O and tooth base angle point E.
For the anti-hypotenuse profile of tooth FABCDE of existing straight flange profile of tooth FBCE and present embodiment, its leaky line length and flank of tooth area are respectively:
The leaky line length of profile of tooth FBCE:
L1≈FB+BC+CE
The area of profile of tooth FBCE:
S1≈FB×BC
The leaky line length of profile of tooth FABCDE:
L2≈FA+AB+BC+CD+DE
The area of profile of tooth FABCDE:
S2≈FB×BC+FB×AB/2+CE×CD/2
Owing to have:
FA≈FB
CE≈DE
AB＝CD
Therefore have:
L2≈L1+2AB
S2≈S1+FB×AB
So profile of tooth changes the leaky line length change that causes and is:
L2/L1＝1+AB/(FB+BC/2)
Profile of tooth changes the flank of tooth area change that causes:
S2/S1＝1+AB/BC
Owing to, have to all existing rack tooths:
FB＞BC
Therefore:
L2/L1＜1+AB/(1.5BC)＝S2/S1-0.5AB/BC
Just have:
L2/L1＜S2/S1
Promptly, the profile of tooth of present embodiment is compared with existing straight flange profile of tooth, the increase ratio of its leaky line length is less than the increase ratio of flank of tooth area, therefore, increases the increase ratio of ratio greater than its leaky line length by the volume of the pairing screw channel of profile of tooth of present embodiment, consequently, under same back lash, use the profile of tooth that present embodiment proposed, the per unit air displacement of compressor has lower leakage rate, the exhaust loss of compressor is less, and efficient is higher.It can also be seen that from top calculating the efficient of compressor increases along with the increase of AB/BC.
When the work tooth when FBCE and FABCDE position rotate to F ' B ' C ' E ' and F ' A ' B ' C ' D ' E ', can prove that in like manner the work area of its work tooth in screw rod increases the increase ratio of ratio leaky line length and want big.
Another remarkable advantage of the single screw compressor of present embodiment is under the situation that the compressor volume does not increase, and can further increase the air displacement of compressor.
Claims (6)
1. a single screw compressor comprises a screw rod and several star-wheels, it is characterized in that each star-wheel tooth of its star-wheel is the tooth top anti-hypotenuse shape wideer than tooth root.
2. single screw compressor according to claim 1 is characterized in that, the flank limit of described star-wheel tooth (AF or DE) is straight line, and the intersection point at the bottom of described flank limit and the tooth is tooth base angle point (F or E).
3. single screw compressor according to claim 2, it is characterized in that the flank limit of described star-wheel tooth (AF or DE) is positioned between the elongation line of line (OF or OE) of the imaginary line parallel with the tooth center line (BF or CE) and star-wheel central point (O) and tooth base angle point (F or E).
4. single screw compressor according to claim 3 is characterized in that, the two flank limits (AF and DE) of described star-wheel tooth are with respect to tooth center line symmetry.
5. single screw compressor according to claim 3 is characterized in that, the two flank limits (AF and DE) of described star-wheel tooth are asymmetric with respect to the tooth center line, and each star-shaped teeth shape is identical and laying in the same way.
6. according to the arbitrary described single screw compressor of claim 1 to 5, it is characterized in that the tip curve of each tooth of its star-wheel (camber line AD) all is the circular arcs on the same circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010162557A CN101832267A (en) | 2010-04-28 | 2010-04-28 | Energy-saving single-screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010162557A CN101832267A (en) | 2010-04-28 | 2010-04-28 | Energy-saving single-screw compressor |
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| CN101832267A true CN101832267A (en) | 2010-09-15 |
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| CN201010162557A Pending CN101832267A (en) | 2010-04-28 | 2010-04-28 | Energy-saving single-screw compressor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661279A (en) * | 2012-05-23 | 2012-09-12 | 贵州中电振华精密机械有限公司 | Single-screw compressor |
| CN103114999A (en) * | 2012-09-29 | 2013-05-22 | 苏州利森空调制冷有限公司 | Energy-saving compression assembly of single-screw compressor |
| CN113059236A (en) * | 2021-04-22 | 2021-07-02 | 江西奥夫科压缩机有限公司 | Method for manufacturing screw and star wheel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2716861A (en) * | 1948-05-19 | 1955-09-06 | Goodyear James Wallis | Pressure energy translating and like devices |
| FR1259874A (en) * | 1960-06-16 | 1961-04-28 | Compressor or fluid pump | |
| US3180565A (en) * | 1962-05-08 | 1965-04-27 | Zimmern Bernard | Worm rotary compressors with liquid joints |
| US3788784A (en) * | 1971-07-30 | 1974-01-29 | B Zimmern | Globoid worm fluid-flow machines |
| JPS50134208A (en) * | 1974-04-15 | 1975-10-24 | ||
| WO2009081962A1 (en) * | 2007-12-26 | 2009-07-02 | Daikin Industries, Ltd. | Gate rotor and screw compressor |
-
2010
- 2010-04-28 CN CN201010162557A patent/CN101832267A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2716861A (en) * | 1948-05-19 | 1955-09-06 | Goodyear James Wallis | Pressure energy translating and like devices |
| FR1259874A (en) * | 1960-06-16 | 1961-04-28 | Compressor or fluid pump | |
| US3180565A (en) * | 1962-05-08 | 1965-04-27 | Zimmern Bernard | Worm rotary compressors with liquid joints |
| US3788784A (en) * | 1971-07-30 | 1974-01-29 | B Zimmern | Globoid worm fluid-flow machines |
| JPS50134208A (en) * | 1974-04-15 | 1975-10-24 | ||
| WO2009081962A1 (en) * | 2007-12-26 | 2009-07-02 | Daikin Industries, Ltd. | Gate rotor and screw compressor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661279A (en) * | 2012-05-23 | 2012-09-12 | 贵州中电振华精密机械有限公司 | Single-screw compressor |
| CN102661279B (en) * | 2012-05-23 | 2016-01-27 | 贵州中电振华精密机械有限公司 | Single screw compressor |
| CN103114999A (en) * | 2012-09-29 | 2013-05-22 | 苏州利森空调制冷有限公司 | Energy-saving compression assembly of single-screw compressor |
| CN113059236A (en) * | 2021-04-22 | 2021-07-02 | 江西奥夫科压缩机有限公司 | Method for manufacturing screw and star wheel |
| CN113059236B (en) * | 2021-04-22 | 2022-07-26 | 江西奥夫科压缩机有限公司 | Method for manufacturing screw and star wheel |
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Application publication date: 20100915 |