CN1576588A - Screw compressor - Google Patents
Screw compressor Download PDFInfo
- Publication number
- CN1576588A CN1576588A CN200410071636.1A CN200410071636A CN1576588A CN 1576588 A CN1576588 A CN 1576588A CN 200410071636 A CN200410071636 A CN 200410071636A CN 1576588 A CN1576588 A CN 1576588A
- Authority
- CN
- China
- Prior art keywords
- helical
- slide block
- lobe compressor
- control slide
- path
- 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.)
- Pending
Links
Images
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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/10—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
- F04C28/12—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves
- F04C28/125—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves with sliding valves controlled by the use of fluid other than the working fluid
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- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
In a screw compressor for gaseous media, in particular refrigerants, comprising a compressor housing, two screw rotors arranged in screw rotor bores in the compressor housing, which are rotatingly drivable and interact to compress the medium, and a control slide arranged adjacent the screw rotors and movable in a direction of displacement for controlling the compression of the screw compressor, in order to solve the problem that the compression of the screw compressor can be controlled, but not precisely regulated, it is proposed that a scannable element, which is scannable with a measuring sensor so as to recognize a position of the control slide in the direction of displacement, be coupled with the control slide.
Description
The present invention relates to a kind of helical-lobe compressor that is used for gas medium, particularly refrigeration agent, it comprises a compressor case; Two screw rotors that are arranged in the interior screw rotor hole of compressor case, this rotor can drive and interact compressed media in rotary manner; And one near the screw rotor setting and can move the control slide block of the compression that is used for controlling helical-lobe compressor along direction of displacement.
The normal problem that exists of this helical-lobe compressor is to control the compression of helical-lobe compressor, but can not accurately be regulated.
This helical-lobe compressor that utilizes beginning to introduce can be realized this purpose, and according to the present invention, but a scanned copy is connected in the control slide block, but should can be scanned by measuring transducer by scanned copy, with the position of identification control slide block along direction of displacement.
Element that can scan in this way makes it possible to accurately measure the position of control slide block along direction of displacement, and comes accurately to learn the compressive deformation of helical-lobe compressor thus, and compressive deformation that if desired can the adjusting screw rod compressor.
For example, but but should scanned copy can have the internal structure of a photoscanning or magnetic scanning.
For for simplicity, but verified particularly advantageous for this scanned copy be to have an outer wheels profile that can scan.
This outer wheels profile that can scanning can be a dentation outer contour for example, and it can optics, induction or mechanically scanning.
Especially simply be that this outer contour that can scan is one to have the path of scanning area.
This path with scanning area also can be scanned in discontiguous mode.
From the angle of structure, the scheme that the path trace device is placed in the mode of Mechanical Contact on the scanning area in path is easy to carry out especially.
When favouring, this scanning area is easy to scanning when control slider displacement direction is extended especially.
In addition, utilization is extended substantially along a straight line but is favoured the scannable that the scanning area of controlling the slider displacement direction helps this scanning area.
To so far, also do not have the mobility of this path trace device is elaborated.In principle, can make path trace device being used for by the path around axis rotation.
But, from the angle of structure, can carry out a kind of scheme with a particularly advantageous mode, that is, the path trace device can move along a direction of extending transverse to direction of displacement.
The path trace device can be arranged on the arm, and is directed in a connection piece to move on a curve.
But, when the path trace device is mobile along a straight line, can come the path of detective path tracker with a simple especially method.
For guaranteeing to measure the path that needs by the detection of path trace device with simple as far as possible method, verified this path is suitable to be designed to: the ultimate range that the path trace device is advanced along direction of displacement less than the path along the ultimate range of horizontal travel.This scheme has advantage especially, that is, can use traditional short stroke position transducer to detect the ultimate range that the path trace device is advanced, and this makes the compact structure of helical-lobe compressor be designed to possibility.
In the explanation of above each scheme, scanned copy is not arranged at method in the shell but provide in more detail.
In this a kind of particularly advantageous scheme that provides be, but scanned copy be arranged at the bearing support zone of shell inner screw rotor.Thereby can but scanned copy be contained in wherein in the mode in a kind of special saving space.
In principle, but can should scanned copy directly be arranged on the control slide block; On the connector between one controlling device of control slide block and control slide block; Perhaps on the controlling device of control slide block.
A simple especially scheme is from the viewpoint of structure, but scanned copy is arranged on the carriage that is installed on the control slide block.
In order to make full use of free space in this helical-lobe compressor so that but scanned copy to be set, but should suitable being set to of scanned copy extend away from the control slide block, particularly extend along direction in contrast to the adjusting direction of control slide block along the direction of displacement of control slide block.
The suitable especially end that is arranged at the guide of control slide block of this carriage, and, for example extend along the direction of the drive motor of screw rotor.
Up to the present, also do not illustrate in greater detail carriage with respect to the integrally-built layout of control slide block.A particularly advantageous scheme is carriage to be arranged in the transverse cross-sectional area of control slide block.The advantage of this scheme is that this carriage can be placed on the control slide block in advance, thereby is inserted in the slider bore with slide block, and the control slide block inserts the obstruction that can not be subjected to carriage in the slider bore.
Especially, in the time of on carriage being placed the guide of controlling slide block, this carriage suits to be arranged in the transverse cross-sectional area of the guide of controlling slide block, like this, under this kind situation, carriage can be placed on the guide in advance equally, and this carriage that presets can not hinder in the part that guide is inserted into the slider bore that carriage provides.
In the explanation of above each claim, do not provide the design details of measuring transducer.For example, measuring transducer can be designed to scan each discrete position.
But especially simply, this measuring transducer is a position transducer, thereby can come directly each position to be detected one by one with it.
Measuring transducer is suitable to be designed to detect by the displacement path transverse to the path trace device that the path produced of direction of displacement.
Correctly regulate the position of control slide block in order to utilize the solution of the present invention, one control gear preferably is provided, be used for measuring the position of control slide block by measuring transducer, and by means of the position that is used for regulating the control slide block of the controlling device of control slide block.
Other features and advantages of the present invention are themes that dependent claims and embodiment's diagram will be illustrated.
Show among the figure:
Fig. 1 is the longitudinal plane according to an embodiment of helical-lobe compressor of the present invention; And
Fig. 2 is for having the enlarged detail in the compressor screw shell zone of controlling slide block among Fig. 1.
As shown in fig. 1, comprise one totally with 10 shells of representing according to an embodiment of helical-lobe compressor of the present invention, it comprises the part 16 on part 12, a compressor section 14 and the pressure side on the motor side.
Totally be arranged in the part 12 on the motor side with 20 motor of representing.Its stator 22 is placed in the part 12 on the motor side of the shell 10 on the motor side securely, and its rotor 24 is installed as in stator 22 around axis 26 rotations.
This motor 24 drives a transmission shaft 28, can drive pair of interacting screw rotor 30 rotatably via this transmission shaft 28.This is placed in the screw rotor hole 32 of the compressor screw shell that overall usefulness 34 represents screw rotor 30, and this screw rod shell is arranged in the compressor section 14 of shell 10.
At the either side of compressor screw shell 34, bearing support 36 and 38 is arranged in the shell 10.The axial region 40 and 42 that extends from screw rotor 30 utilizes swivel bearing 44 and 46 rotatably to be installed in bearing support 36 and 38.
Also be provided with a slider bore 48 in compressor screw shell 34, a control slide block 50 can move along 26 direction of displacement 52 that extend that parallel to the axis therein.Control slide block 50 is connected in a controlling device 56 via a connecting rod 54, this controlling device for example comprises one regulates a cylinder 58 and a regulating piston 60, this piston can carry out displacement by the pressurizing medium of regulating in the cylinder 58, thereby makes the control slide block 50 that connects via connecting rod 54 also can carry out displacement according to the position of regulating piston 60.
When control edge 64 directions along inlet 62 were moved at utmost, compression ratio was a maximum value, otherwise when control edge 64 directions along outlet 66 were moved at utmost, compression ratio was a minimum value.
The control gear that controlling device 56 is represented via the overall usefulness 70 of helical-lobe compressor activates, and the accurate position of regulating requirement control slide block 50 is confirmable.
For this reason, a path carriage 72 is linked in control slide block 50, and this carriage can be along the direction displacement of direction of displacement 52 with control slide block 50, and comprises that one can be by the path 74 of path trace device 76 scannings.
In an illustrated embodiment, path carriage 72 preferably is supported on the guide 86 of control slide block 50, and this guide extends beyond control edge 64 along direction of displacement 52.Especially, path carriage 72 is supported in the maximum cross section of control slide block 50 as the extendible portion of guide 86, thereby direction from axis 26, path carriage 72 approximately extends in the zone of the bearing support 36 between motor 20 and compressor screw shell 34, especially, in the inner space 88 of the shell 10 around the bearing support 36, extend.Inner space 88 extends to the entry end 62 of compressor screw shell 34 around bearing support 36, and is the direction along motor 20 equally.Because path carriage 72 is arranged in the maximum cross section of control slide block 50, especially, in a cross section of guide 86, therefore, the control slide block 50 that path carriage 72 is installed on it can be inserted in the slider bore 48 from exporting 66 1 ends, and can slide until inner space 88 by this hole.
Preferably, inner space 88 is under the interior refrigeration agent feed pressure in entry end 62 zones.
Preferably, position transducer 84 is placed on the outside of compressor section 14 of shell 10, and gauge head 82 passes one and extend through the hole 90 of shell 10, thereby is held on the path 74 in spring-loaded mode with path trace device 76.
By accurately measuring the position of control slide block 50, can utilize control gear 70, particularly by starting the pressurization of controlling device 60 in regulating cylinder 58, and accurately regulate the position of controlling slide block 50 via the position that position transducer 84 Monitoring and Controlling slide blocks 50 are arrived, accurately regulate the position of control slide block 50.
Claims (18)
1. the helical-lobe compressor that is used for gas medium, particularly refrigeration agent comprises a compressor case (10); Two screw rotors (30) that are arranged in the interior screw rotor hole (32) of compressor case (10), this rotor can be driven and interact compressed media in rotary manner; And one be provided with and can move the control slide block (50) of the compression that is used for controlling helical-lobe compressor along direction of displacement (52) near screw rotor (30), it is characterized in that, but a scanned copy (74) is connected in control slide block (50), but should can scan by enough measuring transducers (84) by scanned copy (74), with the position of identification control slide block (50) along direction of displacement (52).
2. helical-lobe compressor as claimed in claim 1 is characterized in that, but scanned copy has an outer wheels profile (74) that can scan.
3. helical-lobe compressor as claimed in claim 2 is characterized in that, the outer wheels profile (74) that can scan is one to have the path (74) of one scan district (78).
4. helical-lobe compressor as claimed in claim 3 is characterized in that, a path trace device (76) is placed on the scanning area (78) of path (74) in the mode with scanning area (78) Mechanical Contact of path (74).
5. helical-lobe compressor as claimed in claim 4 is characterized in that, the direction of displacement (52) that scanning area (78) favours control slide block (50) extends.
6. helical-lobe compressor as claimed in claim 5 is characterized in that, scanning area (78) extends basically along a straight line.
7. as any described helical-lobe compressor among the claim 4-6, it is characterized in that path trace device (76) can move transverse to horizontal (80) of direction of displacement (52) extension along one.
8. helical-lobe compressor as claimed in claim 7 is characterized in that, path trace device (76) can move along a straight line.
9. as any described helical-lobe compressor among the claim 3-8, it is characterized in that the ultimate range that the ultimate range that path (74) are designed to advance on path trace device (76) edge horizontal (80) is advanced along direction of displacement (52) less than path (74).
10. as any described helical-lobe compressor in the above claim, it is characterized in that, but scanned copy (74) is arranged at the zone of the bearing support (36) that is arranged in screw rotor (30) in the shell (10).
11. as any described helical-lobe compressor in the above claim, it is characterized in that, but scanned copy (74) is arranged on the carriage (72) that is contained on the control slide block (50).
12. helical-lobe compressor as claimed in claim 11 is characterized in that, but scanned copy (74) extends away from control slide block (50) along the direction of displacement (52) of controlling slide block (50).
13. helical-lobe compressor as claimed in claim 12 is characterized in that, carriage (72) is arranged at the end of the guide (86) of control slide block (50).
14., it is characterized in that carriage (72) is arranged in the transverse cross-sectional area of control slide block (50) as any described helical-lobe compressor among the claim 11-13.
15. helical-lobe compressor as claimed in claim 11 is characterized in that, carriage (72) is arranged in the transverse cross-sectional area of guide (86).
16., it is characterized in that measuring transducer is a position transducer (84) as any described helical-lobe compressor in the above claim.
17. helical-lobe compressor as claimed in claim 16 is characterized in that, measuring transducer (84) detects the displacement path of the path trace device (76) that is produced by the path (74) transverse to direction of displacement (52).
18. as any described helical-lobe compressor in the above claim, it is characterized in that, provide a control gear (70), be used for measuring the position of control slide block (50) by measuring transducer (84), and by means of the position that is used for regulating control slide block (50) of the controlling device (56) of control slide block (50).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10333400A DE10333400A1 (en) | 2003-07-16 | 2003-07-16 | screw compressors |
| DE10333400.9 | 2003-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1576588A true CN1576588A (en) | 2005-02-09 |
Family
ID=33462008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200410071636.1A Pending CN1576588A (en) | 2003-07-16 | 2004-07-15 | Screw compressor |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20050013702A1 (en) |
| EP (1) | EP1498611A1 (en) |
| CN (1) | CN1576588A (en) |
| DE (1) | DE10333400A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748286A (en) * | 2012-04-11 | 2012-10-24 | 无锡市制冷设备厂有限责任公司 | Screw compressor |
| CN106795884A (en) * | 2014-10-08 | 2017-05-31 | 比泽尔制冷设备有限公司 | Screw compressor |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10941770B2 (en) | 2010-07-20 | 2021-03-09 | Trane International Inc. | Variable capacity screw compressor and method |
| DE102013020534A1 (en) | 2013-12-12 | 2015-06-18 | Gea Refrigeration Germany Gmbh | compressor |
| DE102014010534A1 (en) * | 2014-07-19 | 2016-01-21 | Gea Refrigeration Germany Gmbh | screw compressors |
| DE102015006129A1 (en) * | 2015-05-09 | 2016-11-10 | Man Diesel & Turbo Se | screw machine |
| WO2017174131A1 (en) * | 2016-04-06 | 2017-10-12 | Bitzer Kühlmaschinenbau Gmbh | Compressor unit and method for operating a compressor unit |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4351160A (en) * | 1980-06-16 | 1982-09-28 | Borg-Warner Corporation | Capacity control systems for screw compressor based water chillers |
| US4548549A (en) * | 1982-09-10 | 1985-10-22 | Frick Company | Micro-processor control of compression ratio at full load in a helical screw rotary compressor responsive to compressor drive motor current |
| US4536130A (en) * | 1984-06-18 | 1985-08-20 | Dunham-Bush, Inc. | Simplified unloader indicator for helical screw rotary compressor |
| US4609329A (en) * | 1985-04-05 | 1986-09-02 | Frick Company | Micro-processor control of a movable slide stop and a movable slide valve in a helical screw rotary compressor with an enconomizer inlet port |
| US4610612A (en) * | 1985-06-03 | 1986-09-09 | Vilter Manufacturing Corporation | Rotary screw gas compressor having dual slide valves |
| US5257921A (en) * | 1992-05-19 | 1993-11-02 | Fes, Inc. | Electronic slide valve position indicator |
| JPH09158867A (en) * | 1995-12-06 | 1997-06-17 | Hitachi Ltd | Screw compressor capacity detector |
| GB2331574A (en) * | 1997-11-20 | 1999-05-26 | Gethin Bermingham | Sensing device for screw compressor valve |
-
2003
- 2003-07-16 DE DE10333400A patent/DE10333400A1/en not_active Ceased
-
2004
- 2004-05-27 EP EP04012535A patent/EP1498611A1/en not_active Withdrawn
- 2004-07-02 US US10/884,421 patent/US20050013702A1/en not_active Abandoned
- 2004-07-15 CN CN200410071636.1A patent/CN1576588A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748286A (en) * | 2012-04-11 | 2012-10-24 | 无锡市制冷设备厂有限责任公司 | Screw compressor |
| CN106795884A (en) * | 2014-10-08 | 2017-05-31 | 比泽尔制冷设备有限公司 | Screw compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| US20050013702A1 (en) | 2005-01-20 |
| EP1498611A1 (en) | 2005-01-19 |
| DE10333400A1 (en) | 2005-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |