EP3169902A1 - Schraubenverdichter - Google Patents
SchraubenverdichterInfo
- Publication number
- EP3169902A1 EP3169902A1 EP15736789.7A EP15736789A EP3169902A1 EP 3169902 A1 EP3169902 A1 EP 3169902A1 EP 15736789 A EP15736789 A EP 15736789A EP 3169902 A1 EP3169902 A1 EP 3169902A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- valve
- gas
- screw compressor
- check valve
- 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.)
- Granted
Links
- 238000005057 refrigeration Methods 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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
- F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
- F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
-
- 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
-
- 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
- F04C29/0092—Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning
-
- 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
- F04C2240/00—Components
- F04C2240/30—Casings or housings
Definitions
- the present invention relates to a screw compressor according to the preamble of patent claim 1.
- check valves are usually arranged on the suction side of the compressor to prevent it when switching off the compressor drive by the pressure difference before and after the compressor to a
- check valves also serve to ensure that the pressures of the system before and after the compressor do not compensate when the compressor is stopped.
- Such systems typically have filters on the suction side of the compressors to prevent dirt from entering and damaging the compressor.
- Compressor housing integrated check valves common, which are opened by the gas flow and closed by a compression spring.
- DE 10 2006 016 317 AI shows an exemplary construction which is actuated by a compression spring. In such
- CONFIRMATION COPY Compressors are also customary in the compressor housing integrated suction gas filter.
- the check valves commonly used in small compressors, which are actuated by a compression spring, are not advantageous because of their large flow losses.
- the streamlined, operated by compressed gas check valves, which are common in systems with larger compressors, are expensive.
- the separately arranged components require a plurality of housings, which are connected by connecting elements, which leads to high expenditure on machining and assembly. Pipelines are required to direct gas from the pressure side of the compressor to the check valve, the
- Check valve has low flow losses. This construction is to be designed as inexpensively as possible and should have the least possible number of pipelines and fittings in order to minimize the risk of gas leaks. The installation of a suction gas filter should also be possible.
- the object underlying the invention is achieved by a screw compressor with the features of claim 1.
- the non-return valve located in the compressor housing together with the suction gas filter for its control supplied with compressed gas, wherein the compressed gas passes through drilled or cast in the compressor housing channels to the check valve.
- a likewise arranged on the compressor solenoid valve is present, which serves for switching on and off the compressed gas supply.
- Suction gas filter coaxially arranged around the check valve so that the valve disc of the check valve moves within the Sauggasfilters.
- Design is a cover of the compressor housing at the same time cover of the
- This integrated solution is less expensive than using separate components in the system. By eliminating external lines assembly costs are saved and the risk of gas leakage through broken pipes or leaking pipe fittings is avoided.
- the check valve controlled by compressed gas has lower flow losses than the check valves commonly used in small and medium screw compressors and actuated by a compression spring.
- Fig.2 the check valve of Fig. 1 in the open state (screw compressor in Business);
- Fig. 3 the check valve of Fig. 1 in the closed state (screw compressor stopped);
- Figure 4 is a sectional view of the first embodiment of a screw compressor, showing a system of bores and solenoid valves through which gas, which is under final pressure, is passed from a gas space behind the screw rotor a channel for a rod of the check valve in the lid;
- Figure 5 is a sectional view of a section of a second embodiment of a screw compressor according to the invention, showing a system of holes and a shut-off valve, whereby a bypass between the gas space in front of and behind the closed check valve can be made.
- a position reporting system which may optionally be present to report the switching position of the check valve.
- a compressor housing 1 of a screw compressor a screw compressor
- Suction gas filter 2 is arranged, which has the shape of a cylinder open on both sides.
- the compressor housing 1 is closed by a cover 3, so that a change, or the cleaning of the suction gas filter 2 is easily possible.
- the lid 3 is sealed by a first seal 4, for example, an O-ring to the housing 1.
- a first seal 4 for example, an O-ring to the housing 1.
- At both ends of the suction gas filter 2 is fitted in the housing 1, so that the gas entering the compressor is forced through a screen fabric 5, which
- Suction gas filter 2 has, and not to flow laterally past this.
- Valve rod 8 is arranged.
- the valve rod 8 is guided by a linear ball bearing 9, so that the valve disc 6 and valve rod 8 are jointly axially displaceable.
- Linear ball bearing 9 is arranged in a first channel 13 in the lid 3. The linear linear
- Lid 3 limited in the other direction of movement moves the valve plate 6 against a valve seat 10 which is arranged in a bore in the compressor housing 1, which is also arranged coaxially with the valve disk 6 and the suction gas filter 2.
- the valve seat 10 is sealed by a second seal 11, for example an O-ring, against the compressor housing 1 ⁇ .
- Screw rotor 14 of the compressor is formed.
- the check valve 7 In a screw compressor at standstill, the check valve 7 as shown in Fig 3, closed. This prevents a pressure equalization of the different pressures of the working medium takes place before and after the screw compressor.
- pressurized gas In order to close the check valve 7, pressurized gas has to be disposed downstream of the screw rotor 14 from a third gas space 15 which is located downstream (with regard to a gas flow in the compressor during a normal operation of the compressor)
- a plurality of channels and a solenoid valve 17 are arranged in the compressor housing 1 and in the lid 3 .
- a second channel 16 extends to the solenoid valve 17, which is arranged directly on the compressor housing 1.
- the solenoid valve 17 opens so that the check valve 7 closes.
- the solenoid valve 17 is open, the compressed gas from the gas chamber 15 via the channels 16, 22, 23 and 24 passes through the compressor housing 1 in the lid 3 and there in the first channel 13.
- the valve rod 8 In the first channel 13 is the valve rod 8.
- the compressed gas pushes the valve rod 8 with the valve plate 6 to the Valve seat 10.
- the valve is closed. This pressure equalization between the gas (compressed gas or by the screw rotor 14 compressed gas) in the suction line 18 and the gas in the third gas space 15 is prevented.
- the screw rotor 14 generated in the first and second gas chamber 12 and 19 between valve seat 10 and screw rotor 14 has a lower ⁇ pressure which is lower than the pressure in the suction line 18 so that the check valve 7 opens and in Fig.2 shown position occupies.
- a system of bores and a shut-off valve as shown in Fig.5 is provided in a second possible embodiment of the system according to the invention. As a result, a bypass between the second gas chamber 12 and the suction line 18, which are separated by the valve disk 6, which rests against the valve seat 11, are produced.
- a sixth channel 20 in the compressor housing 1 is connected by two channels (seventh channel 21 and eighth channel 29) to the second gas chamber 12 and the suction line 18.
- a check valve 25 At the junction of sixth channel 20 and seventh channel 21 is a check valve 25 in
- Compressor housing 1 is arranged so that when closing the shut-off valve 25, the connection of the sixth channel 20 to seventh channel 21 is disconnected or closed. During maintenance, the shut-off valve 25 can be opened, so that the connection of the sixth channel 20 to seventh channel 21 is opened, and thus the pressure between the gas space 19 second gas space 12 and the suction line 18 can compensate.
- a position reporting system 30 is mounted on the cover 3 of the check valve 7, by means of which an adjustment path of the valve rod 8 can be detected.
- the detection can in individual embodiments, for example, on mechanical, electrical or electro-magnetic, and on magnetic basis.
- a corresponding encoder can be provided which outputs or transmits the adjustment path or a signal indicating the adjustment path or representative signal, for example a corresponding voltage signal, to a control device, in particular a control device of the compressor.
- Compressor housing 1 which at least partially einhaust the compressor, with an optional integrated suction gas filter 2 and an integrated check valve 7, wherein the check valve 7 is a valve to be actuated with compressed gas and the
- Compressor housing 1 recesses, in particular drilled or cast-in channels 13,
- solenoid valve 17 which is preferably designed as a solenoid valve, for switching on and off the compressed gas supply to the check valve 7, wherein the solenoid valve 17 is disposed directly on the compressor housing 1 and the connection of the compressor housing (1) drilled or cast channels 13, 16, 22, 23, 24 produces.
- Compressor housing 1 at the same time lid of the check valve 7 is.
- screw compressor according to one of the preceding points (1, 2, 3 or 4), wherein the screw compressor, a third gas space 15, which for receiving compressed gas, that is, compressed gas is provided, and a first channel 13, in which the check valve 7 is at least partially supported, wherein the third gas chamber 15 and the first channel 13 are in communication by means of a fluid connection.
- Compressor housing 1 has a second channel 16 which opens at a first end in the third gas space 15 and at a second end in a first port of a / of the solenoid valve 17 opens, and wherein the compressor housing 1 further channels, in particular a third channel 22, a fourth channel 23 and a fifth channel 24 communicating with each other, one of the channels 22-24 terminating at one of its ends in a first port of one / of the solenoid valve 17 and another of the channels 22-24 in a first channel 13 opens.
- screw compressor according to one of the preceding points (1, 2, 3, 4, 5 or 6), wherein the screw compressor a suction volume, in particular a suction line 18 and a first gas space 19, which is disposed within the suction gas filter 2 is, wherein the first gas space 19 and the suction volume are in communication by means of a fluid connection.
- Screw compressor according to one of the preceding points (1, 2, 3, 4, 5, 6 or 7), wherein the screw compressor / a suction volume, in particular a / the suction line 18 and a / the first Gas chamber 19 which is disposed within the Sauggasfilters 2, and that the compressor housing 1 channels, in particular a sixth channel 20, a seventh channel 21 and an eighth channel 29 which communicate with each other, wherein one of the channels 20, 21st , 29 opens into the suction line 18 and wherein another of the channels 20, 21, 29 opens in the second gas space 12.
- Screw compressor according to one of the preceding points (1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th or 9th), wherein arranged on the cover 3 of the check valve 7, a position reporting system 30, in particular is attached, for detecting the adjustment path of the
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014010534.2A DE102014010534A1 (de) | 2014-07-19 | 2014-07-19 | Schraubenverdichter |
PCT/EP2015/001413 WO2016012083A1 (de) | 2014-07-19 | 2015-07-10 | Schraubenverdichter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3169902A1 true EP3169902A1 (de) | 2017-05-24 |
EP3169902B1 EP3169902B1 (de) | 2018-09-19 |
Family
ID=53546200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15736789.7A Active EP3169902B1 (de) | 2014-07-19 | 2015-07-10 | Schraubenverdichter |
Country Status (6)
Country | Link |
---|---|
US (1) | US10648473B2 (de) |
EP (1) | EP3169902B1 (de) |
CN (1) | CN107076151B (de) |
DE (1) | DE102014010534A1 (de) |
DK (1) | DK3169902T3 (de) |
WO (1) | WO2016012083A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106640644A (zh) * | 2016-12-01 | 2017-05-10 | 南京德西联智能科技有限公司 | 可实现辅助进气的预冷压缩机 |
CN111417784B (zh) * | 2017-12-08 | 2022-07-08 | 株式会社日立产机*** | 供液式螺杆压缩机 |
CN114688021A (zh) * | 2020-12-25 | 2022-07-01 | 宁波市润桥工业设计有限公司 | 一种充排可控的螺杆泵 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2302046A1 (de) * | 1973-01-17 | 1974-07-25 | Demag Drucklufttechnik Gmbh | Verdichteranlage |
US3941505A (en) * | 1973-06-25 | 1976-03-02 | Trw Inc. | Method and apparatus for pumping fuel |
US4083380A (en) * | 1976-05-27 | 1978-04-11 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Fluid valve assembly |
US4396345A (en) * | 1981-05-07 | 1983-08-02 | Ingersoll-Rand Company | Unloader valve having bypass valving means |
DE3210790A1 (de) * | 1982-03-24 | 1983-10-06 | Bauer Kompressoren | Druckmittelbetaetigtes steuerbares absperrventil |
AT378041B (de) * | 1983-01-13 | 1985-06-10 | Hoerbiger Ventilwerke Ag | Einrichtung zum steuern von schraubenverdichtern |
US4929161A (en) * | 1987-10-28 | 1990-05-29 | Hitachi, Ltd. | Air-cooled oil-free rotary-type compressor |
JP3262011B2 (ja) | 1996-02-19 | 2002-03-04 | 株式会社日立製作所 | スクリュー圧縮機の運転方法及びスクリュー圧縮機 |
US5899435A (en) * | 1996-09-13 | 1999-05-04 | Westinghouse Air Brake Co. | Molded rubber valve seal for use in predetermined type valves, such as, a check valve in a regenerative desiccant air dryer |
BE1015079A4 (nl) * | 2002-08-22 | 2004-09-07 | Atlas Copco Airpower Nv | Compressor met drukontlasting. |
DE10333400A1 (de) * | 2003-07-16 | 2005-02-10 | Bitzer Kühlmaschinenbau Gmbh | Schraubenverdichter |
US7273068B2 (en) * | 2004-01-14 | 2007-09-25 | Honeywell International, Inc. | Electric driven, integrated metering and shutoff valve for fluid flow control |
DE102005018602B4 (de) | 2005-04-21 | 2015-08-20 | Gea Grasso Gmbh | Zweistufiges Schraubenverdichteraggregat |
DE102006016317A1 (de) | 2006-04-06 | 2007-10-11 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Verdichteranordnung mit einer Ventileinheit im Ansaugbereich |
US8267116B2 (en) * | 2006-07-31 | 2012-09-18 | Johnson Controls Technology Company | Strainer and anti-backflow device for compressors |
CN201425024Y (zh) * | 2009-05-15 | 2010-03-17 | 南通炜创机械配件制造有限公司 | 螺杆式空压机进气阀 |
TWI397483B (zh) * | 2010-01-26 | 2013-06-01 | Nabtesco Corp | 鐵道車輛用空氣壓縮裝置 |
CN102155411A (zh) * | 2011-05-20 | 2011-08-17 | 宁波鲍斯能源装备股份有限公司 | 一种螺杆压缩机进气阀 |
US8821141B2 (en) * | 2011-06-23 | 2014-09-02 | Wright Flow Technologies Limited | Positive displacement rotary pumps with improved cooling |
DE102011084811B3 (de) * | 2011-10-19 | 2012-12-27 | Kaeser Kompressoren Ag | Gaseinlassventil für einen Kompressor, Kompressor mit einem derartigen Gaseinlassventil sowie Verfahren zum Betreiben eines Kompressors mit einem derartigen Gaseinlassventil |
DE102013010780A1 (de) | 2013-06-28 | 2014-12-31 | GEA AWP GmbH | Rückschlagventil-Filter-Baugruppe |
-
2014
- 2014-07-19 DE DE102014010534.2A patent/DE102014010534A1/de not_active Withdrawn
-
2015
- 2015-07-10 US US15/326,524 patent/US10648473B2/en active Active
- 2015-07-10 DK DK15736789.7T patent/DK3169902T3/en active
- 2015-07-10 EP EP15736789.7A patent/EP3169902B1/de active Active
- 2015-07-10 CN CN201580039012.8A patent/CN107076151B/zh active Active
- 2015-07-10 WO PCT/EP2015/001413 patent/WO2016012083A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
DE102014010534A1 (de) | 2016-01-21 |
US20170211575A1 (en) | 2017-07-27 |
EP3169902B1 (de) | 2018-09-19 |
DK3169902T3 (en) | 2019-01-14 |
CN107076151B (zh) | 2020-07-24 |
CN107076151A (zh) | 2017-08-18 |
WO2016012083A1 (de) | 2016-01-28 |
US10648473B2 (en) | 2020-05-12 |
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