CN1073237A - The rotary vane compressor that has capacity control - Google Patents
The rotary vane compressor that has capacity control Download PDFInfo
- Publication number
- CN1073237A CN1073237A CN 92112839 CN92112839A CN1073237A CN 1073237 A CN1073237 A CN 1073237A CN 92112839 CN92112839 CN 92112839 CN 92112839 A CN92112839 A CN 92112839A CN 1073237 A CN1073237 A CN 1073237A
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- CN
- China
- Prior art keywords
- air chamber
- inlet
- outlet
- gas
- stator
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C29/122—Arrangements for supercharging the working space
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
A kind of rotary vane compressor, it comprises stator (11) and rotor (12), between outlet (13) and enter the mouth (12), subsidiary conduit (14) is arranged, when shifting to inlet (12) pressurized gas is incorporated in each air chamber and expands, thereby mechanical work is passed to rotor (20) with convenient air chamber (C).
Description
The present invention relates to compressor, particularly the compressor of rotation blade type.This compressor contains stator and rotor usually.Stator has entrance and exit, and outlet is radial arrangement and separates with inlet; Rotor passes through inlet by motor driven and along the postive direction rotation, then by outlet, thus gas is delivered to outlet from inlet; Blade be installed in peritrochanteric with separating each other so that and the wall of stator constituted air chamber together, the shape that stator inner wall is shaped is compressed the gas in the air chamber the process that is sent to outlet from inlet.
This has realized that when needs it is useful having the device that reduces the compressor operating volume, because will reduce the output power of the motor that drives rotor.The method of a known minimizing volume is that a part of pressurized gas circulation of discharging from outlet is turned back to inlet, but this has improved delivery temperature and can not reduce the power that needs.Another known method be gas access design in a certain position, air chamber at the volume of this position less than maximum volume, but this has influenced inherent compressibility, and reduces the power that needs with regard to true meaning.Generally can note GB-A-752064 in this respect; US-A-4866863 and US-A-4815944 patent.
A task of the present invention provides a kind of apparatus and method that reduce the rotary vane compressor swept volume, reduces by this way to drive the rotor power demand.Reduce power demand and to change size, weight and the cost of compressor be another object of the present invention on inferior limit ground.
On the one hand, the invention provides a kind of rotary vane compressor that comprises the rotor of stator and motor driven, stator has entrance and exit, rotor then passes through outlet by motor driven and along the postive direction rotation by inlet, thereby gas is sent to outlet from inlet, blade be installed in peritrochanteric with separating each other so that and the wall of stator constitute air chamber together, the shape that stator inner wall is shaped is compressed the gas in the air chamber the process that is sent to outlet from inlet, it is characterized in that an auxiliary conduit extends to an auxiliary entrance of stator wall from outlet conduit, this auxiliary entrance is arranged in rotor and goes back to a certain position that entry process is passed through from outlet, stator is increased the volume of air chamber air chamber in the main-inlet movement process in the shape of the inner wall forming in auxiliary entrance district, and the pressurized gas that allows to guide to air chamber from the auxiliary entrance expands in the gas chamber volume that is increased, thereby mechanical work is passed to rotor, reduce the required power of motor that drives rotor, reduce the rated power of motor.
On the other hand, the invention provides a kind of method of operating rotary vane compressor, this compressor comprises stator and rotor, and stator has entrance and exit; Rotor is installed in the stator, rotates to outlet from inlet, thereby gas is sent to outlet from inlet; Blade is installed in peritrochanteric with separating each other, constitute air chamber together with the wall of stator, the shape that stator inner wall is shaped is compressed the gas in the air chamber the process that is sent to outlet from inlet, it is characterized in that after air chamber moves past outlet enough pressurized gass being incorporated into each air chamber made gas expand before air chamber reaches inlet, the partial volume that occupies air chamber, thus minimizing is from the gas volume of ingress.
In order better now to separate the present invention, now only be described further with reference to the accompanying drawings.
Fig. 1 is the partial cross sectional view of compressor of the present invention;
Fig. 2 diagrammatizes the state of gas in one-period.
The multiple-blade gas compressor by the shell of the stator cavity 11 that comprises air chamber, be positioned at the inlet 12 of air chamber one side and form with the outlet 13 that inlet radially separates.The cross section of air chamber is not a garden shape, but its shape can provide gas breathing space and compressing area.The rotor 20 that is driven by the motor (not shown) is arranged in the air chamber, and the axle 21 of motor and rotor 20 links.The groove 22 that peritrochanteric has spaced radial to arrange is equipped with blade 23 in it, blade can slide in groove, skid off.The end wall of adjacent vanes 23 and stator constituted air chamber C with gas from enter the mouth 12 be transported to the outlet 13.From 12 stator walls to outlet 13 that enter the mouth are compress wall, and its shape makes the volume of air chamber reduce gradually to outlet 13 from main-inlet 12, with pressurized gas.Subsidiary conduit 14 is from exporting 13 auxiliary entrances 15 that extend between outlet 13 and the main-inlet 12 relative with the shaping wall.Solenoid valve or similar valve 16 are contained on the subsidiary conduit 14.
According to the present invention, stator makes air chamber C increase at their volumes when inlet 12 moves from exporting 13 to inlet 12 wall 11B relative with the compress wall 11A shapes that are shaped, and particularly allows the gas chamber volume increase.
As shown in Figure 1, gas enters the air chamber C that compressor is full of each sealing at main-inlet 12.Each air chamber is reducing volume towards relief opening between 13 moving periods, and gas was compressed before discharging relief opening 13.As shown in the figure, the cylinder wall 11A in the stator is not a garden shape, but at inlet 12 with between exporting 13 and between auxiliary entrance 15 and the main-inlet 12, its contour shape designs to such an extent that needed gas chamber volume ratio can be provided.
Cut-off valve 16, compressor will be worked under the set solid amount, and the air chamber of each emptying can be full of by entering the mouth in 12 o'clock, and was passing through outlet emptying in 13 o'clock.Open valve 16, each air chamber will be full of the pressurized gas that enter from subsidiary conduit 14 by auxiliary entrance 15 time.The volume at each air chamber C 15 place in the auxiliary entrance, the shape of the profile 11B that can design as required give earlier to be determined, but the volume that gas expands when rotor rotates to main-inlet part 12 generally is 50% of a maximum inlet gas chamber volume.Because each air chamber partly is full of before reaching main-inlet 12, so the gas volume that compressor sucks has reduced 50%.For the purpose of the present invention, 50% ratio is not the limit, but according to circumstances change.
From auxiliary entrance 15 to main-inlet 12 the inflation process, mechanical work is delivered on the axle 21 at gas, and the external shaft power of the needs of the rotor of drive compression gas has also just reduced.
Consider a kind of typical case and referring to Fig. 2, we suppose ingress gas chamber volume V
SBe 12 volume units, the volume V of discharge
DBe 3 volume units.For for simplicity, we suppose that also the pressure of ingress is 2 crust, are the functions of volume ratio according to head pressure, and approximate to estimate the pressure that discharge be 8 crust.The volume V of the air pressure ingress air chamber of 8 crust
E, V
EBe designed to 1.5 volume units.The gas of 8 crust, 1.5 unit of volume expand into 2 crust, during 12 unit of volume, will be reduced into 6 unit of volume, thereby the ambient atmos volume that enters compressor will reduce half.8 crust, V
EThe gas of volume expand into 2 crust, V
SIn the process of volume, the mechanical output of transmission approximately is 30% of a compression horsepower.In other words, discharge capacity reduces at 50% o'clock, and needed merit will reduce 30%.
The contour shape of stator cavity can be shaped as the discharge capacity that the ratio that is suitable for any volume and institute require minimizing.
Claims (7)
1, a kind of rotary vane compressor, the rotor (20) that comprises stator (11) and motor driven, stator has inlet (12) and outlet (13), rotor (20) then passes through outlet (13) by inlet (12) earlier by motor driven and along the postive direction rotation, thereby gas is sent to outlet (13) from inlet (12), the wall (11) that blade (23) is installed in peritrochanteric and stator at interval constitutes air chamber (C) jointly, the part of stator wall (11A) can make the gas in the air chamber (C) be sent to outlet (13) process and be compressed from inlet (12), it is characterized in that having a subsidiary conduit (14) to extend to auxiliary entrance (15) from the pipe of outlet (13), auxiliary entrance (15) is positioned at a certain position on rotor (20) goes back to the stator wall that inlet (12) passed through from outlet (13) the part (11B), shape in the zone of stator wall (11B) in auxiliary entrance (15) in the process that air chamber shifts towards main-inlet should make the volume of air chamber increase and allow pressurized gas to introduce the air chamber (C) from auxiliary entrance (15), make it in the air chamber volume that increases, to expand, thereby mechanical output is delivered on the rotor (20), and when working under the situation that is reducing discharge capacity, has reduced the motor desired power of driving rotor (20).
2, compressor as claimed in claim 1 is characterized in that valve (16) is installed on the subsidiary conduit (14).
3, compressor as claimed in claim 1 or 2 is characterized in that the size that is processed into to the profile of the section inner stator (11B) of main-inlet in from the auxiliary entrance (15) and/or shape allow pressurized gas to reach half that approximately occupies the air chamber volume when main-inlet (12) expand into the gas pressure of air chamber at air chamber.
4,, it is characterized in that motion in the groove (22) of blade (23) in rotor (20) wall as any one described compressor in the above-mentioned claim.
5, a kind of method of operating rotary vane compressor, described compressor is by the stator with inlet (12) and outlet (13), be positioned at stator and rotation are sent to gas outlet (13) from inlet (12) by outlet (13) by inlet (12) back rotor (20), being spaced from each other and being installed in rotor (20) forms on every side and with the blade (23) that stator wall constitutes air chamber (C), the shape of stator wall (11A) is compressed the gas in the air chamber (C) the transport process of air chamber from inlet (12) to outlet (13), it is characterized in that comprising enough pressurized gass are turned over the step that outlet (13) is incorporated into each air chamber afterwards at each air chamber, reach expand the before partial volume that occupies air chamber (C) and therefore occupied a part of volume of locating to enter the gas of air chamber (C) at main-inlet (12) of inlet (12) at each air chamber, to reduce rotor (20) desired power.
6, method as claimed in claim 5 is characterized in that introducing pressurized gas by the auxiliary entrance (15) that is positioned between outlet (13) and the main-inlet (12).
7, as claim 5 or 6 described methods, it is characterized in that pressurized gas is introduced by in the determined air chamber of partial stator wall (11B) (C), its profile is according to allowing expansion of compressed gas when air chamber reaches main-inlet (12) and locates the interior pressure that gas had of air chamber, and the size or the shape that approximately occupy half volume of air chamber (C) are selected.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9121668A GB2261031B (en) | 1991-10-11 | 1991-10-11 | Rotary vane compressor with capacity control |
| GB9121668.9 | 1991-10-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1073237A true CN1073237A (en) | 1993-06-16 |
Family
ID=10702816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92112839 Pending CN1073237A (en) | 1991-10-11 | 1992-10-10 | The rotary vane compressor that has capacity control |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1073237A (en) |
| GB (1) | GB2261031B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321428A (en) * | 2015-06-30 | 2017-01-11 | 熵零股份有限公司 | Gas compression method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8123506B2 (en) | 2008-05-29 | 2012-02-28 | Flsmidth A/S | Rotary sliding vane compressor with a secondary compressed fluid inlet |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB752064A (en) * | 1954-11-19 | 1956-07-04 | Dewandre Co Ltd C | Improvements in or relating to rotary exhausters and the like |
| JPS6062690A (en) * | 1983-09-16 | 1985-04-10 | Toyoda Autom Loom Works Ltd | Rotary compressor enable of partial load operation |
| JPH0833158B2 (en) * | 1987-02-20 | 1996-03-29 | 松下電器産業株式会社 | Capacity control compressor |
-
1991
- 1991-10-11 GB GB9121668A patent/GB2261031B/en not_active Expired - Fee Related
-
1992
- 1992-10-10 CN CN 92112839 patent/CN1073237A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321428A (en) * | 2015-06-30 | 2017-01-11 | 熵零股份有限公司 | Gas compression method |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2261031A (en) | 1993-05-05 |
| GB2261031B (en) | 1994-08-24 |
| GB9121668D0 (en) | 1991-11-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |