EP1948928B1 - Compressor - Google Patents
Compressor Download PDFInfo
- Publication number
- EP1948928B1 EP1948928B1 EP06807564A EP06807564A EP1948928B1 EP 1948928 B1 EP1948928 B1 EP 1948928B1 EP 06807564 A EP06807564 A EP 06807564A EP 06807564 A EP06807564 A EP 06807564A EP 1948928 B1 EP1948928 B1 EP 1948928B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- bearing
- pressure
- compressor
- reservoir
- 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.)
- Not-in-force
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/122—Cylinder block
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
- F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/125—Cylinder heads
Definitions
- the invention relates to a compressor according to the preamble of claim 1.
- the piston of a compressor should be stored by a gas bearing.
- part of the gas compressed by the compressor is branched off from the useful gas stream and passed through nozzles into the gas bearing.
- the problem with this arrangement is the loss of useful gas in particular because the gas loss depends on the thermodynamic operating point of the compressor. That at high end pressure of the gas more gas is lost than at low final pressure. As a result, the gas loss and the bearing capacity of the gas bearing are dependent on the compressor operating point.
- the structure of a known from the prior art gas bearing is schematically below in FIG. 1 and will be described in detail.
- the bearing nozzles must be continuously supplied with a gas stream. This is achieved by feeding the supply directly from the high-pressure chamber of the compressor.
- the invention relates to a compressor with self-supplying gas storage, in which the supply pressure is independent of the delivery pressure. This optimizes the gas storage according to structure and function.
- FIG. 1 a linear compressor is shown, in which a linearly guided compressor piston 2 acts on a gas volume 1.
- a gas bearing is formed between the piston 2 and the inner wall of the hollow cylinder 10.
- the gas space 1 is a low-pressure chamber 15 and a high-pressure chamber 20 assigned.
- the low-pressure space 15 has a gas inlet 16 and an inlet valve 17.
- the high-pressure space 20 has a gas outlet 21 and an outlet valve 22.
- FIG. 2 shows an improved design of the gas bearing.
- a second gas outlet 33 with channel 30 is mounted in the compression chamber 1.
- the pressure in the gas reservoir 25 is determined by the position A of the gas outlet 33 in the compression chamber and the pressure drop in the connecting line and is below the compression end pressure.
- the channel 30 is designed such that the pressure drop becomes minimal.
- the gas bearing can be fed directly from the high pressure, wherein the gas flow is limited by a pressure reducer to the minimum necessary bearing pressure.
- connection between compression chamber 1 and gas storage reservoir 25 is connected via a closable by valve 31 channel 30 FIG. 3 or a channel 40 without valve, but with anisotropic flow resistance 41 according to FIG. 4 produced. In both cases it is ensured that gas from the compression chamber 1 enters the gas reservoir 25. Conversely, however, no gas or only slightly gas can pass from the reservoir 25 back into the compression space 1 through the valve 31 or through the anisotropic flow resistance 41.
- the volume of the gas reservoir 25 is selected so that the gas bearing is fed reliably from the reservoir 25 during repetitive operation, in particular if the reservoir is not fed from the high-pressure chamber 20 during the part of the compression cycle or intake cycle.
- the gas reservoir 25 can be provided with an outlet valve 26.
- the pressure in the reservoir 25 can be maintained permanently or at least longer, whereby the time period in which the compressor can remain switched off without the gas bearing loses the load capacity, can be extended.
- the outlet valve 26 of the gas reservoir is again opened to first restore the carrying capacity of the gas bearing and then only to begin the movement of the piston 2.
- start-up is, with the gas reservoir 25 empty, first to move the piston 2 with a reduced stroke in order to pressurize the gas reservoir 25. Once this is the bearing capacity of the gas bearing, the stroke can be increased to normal and normal compressor operation begins.
- Another alternative would be an exhaust valve of the compression chamber, which opens independent of the pressure behind the exhaust valve only from a certain pressure. It can thereby be achieved that during start-up of the compressor first the gas reservoir 25 is filled and only then uses the Nutzgasstrom.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
Description
Die Erfindung bezieht sich auf einen Kompressor gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a compressor according to the preamble of claim 1.
Der Kolben eines Kompressors soll durch ein Gaslager gelagert werden. Dazu wird ein Teil des durch den Kompressor verdichteten Gases vom Nutzgasstrom abgezweigt und über Düsen in das Gaslager geleitet. Problematisch bei dieser Anordnung ist der Verlust von Nutzgas insbesondere deshalb, weil der Gasverlust vom thermodynamischen Arbeitspunkt des Kompressors abhängt. D.h. bei hohem Endruck des Gases geht mehr Gas verloren als bei niederem Enddruck. Dadurch sind der Gasverlust und die Tragfähigkeit des Gaslagers vom Kompressorarbeitspunkt abhängig.The piston of a compressor should be stored by a gas bearing. For this purpose, part of the gas compressed by the compressor is branched off from the useful gas stream and passed through nozzles into the gas bearing. The problem with this arrangement is the loss of useful gas in particular because the gas loss depends on the thermodynamic operating point of the compressor. That at high end pressure of the gas more gas is lost than at low final pressure. As a result, the gas loss and the bearing capacity of the gas bearing are dependent on the compressor operating point.
Um die Tragfähigkeit des Lagers auch bei niedrigem Verdichterenddruck sicherzustellen, sind entsprechend viele Lagerdüsen mit passendem Querschnitt vorzusehen. Bei hohem Verdichtungsenddruck führt dies zu starken Gasverlusten und deshalb zu schlechtem Verdichterwirkungsgrad.In order to ensure the bearing capacity of the bearing, even at low compressor discharge pressure, a corresponding number of bearing nozzles with a suitable cross section must be provided. At high compression end pressure, this leads to strong gas losses and therefore to poor compressor efficiency.
Der Aufbau eines vom Stand der Technik bekannten Gaslagers ist schematisch weiter unten in
Aus Dokument
Demgegenüber ist es Aufgabe der Erfindung, einen verbesserten Kompressor zu schaffen.In contrast, it is an object of the invention to provide an improved compressor.
Die Aufgabe ist erfindungsgemäß durch die Merkmale des Patentanspruches 1 gelöst. Weiterbildungen sind in den Unteransprüchen angegeben.The object is achieved by the features of claim 1. Further developments are specified in the subclaims.
Gegenstand der Erfindung ist ein Kompressor mit selbst versorgendem Gaslager, bei dem der Versorgungsdruck unabhängig vom Förderdruck ist. Damit ist das Gaslager nach Aufbau und Funktion optimiert.The invention relates to a compressor with self-supplying gas storage, in which the supply pressure is independent of the delivery pressure. This optimizes the gas storage according to structure and function.
Weitere Einzelheiten und Vorteile ergeben sich aus der nachfolgenden Figurenbeschreibung von Ausführungsbeispielen anhand der Zeichnung in Verbindung mit den Patentansprüchen.Further details and advantages will become apparent from the following description of exemplary embodiments with reference to the drawing in conjunction with the claims.
Es zeigen
- Figur 1
- eine Anordnung eines Linearkompressors gemäß dem Stand der Technik,
Figur 2- einen Kompressor gemäß
Figur 1 mit optimiertem Gaslager, - Figur 3
- eine erste Verbindung vom Gasreservoir und Kompressionsraum und
- Figur 4
- eine zweite Verbindung von Gasreservoir und Kompressionsraum.
- FIG. 1
- an arrangement of a linear compressor according to the prior art,
- FIG. 2
- a compressor according to
FIG. 1 with optimized gas bearing, - FIG. 3
- a first connection from the gas reservoir and compression space and
- FIG. 4
- a second connection of gas reservoir and compression space.
In
Es sind beispielhaft vier Gaseinlassdüsen 11 bis 11''' mit Längskanal 12 angedeutet, über die eine Gasströmung zum Gaslager gelangt. Dafür sind geeignete Leitungen vorhanden.By way of example, four
Dem Gasraum 1 ist ein Niederdruckraum 15 und ein Hochdruckraum 20 zugeordnet. Der Niederdruckraum 15 hat einen Gaseinlass 16 und ein Einlassventil 17. Der Hochdruckraum 20 hat einen Gasauslass 21 und ein Auslassventil 22.The gas space 1 is a low-
Um den Druck im Gaslagerreservoir 25 unabhängig vom Arbeitspunkt des Hauptgaskreislaufes einzustellen, wird ein zweiter Gasauslass 33 mit Kanal 30 im Kompressionsraum 1 angebracht. Der Druck im Gasreservoir 25 wird über die Lage A des Gasauslasses 33 im Kompressionsraum und den Druckabfall in der Verbindungsleitung bestimmt und liegt unterhalb des Verdichtungsenddrucks. Idealerweise wird der Kanal 30 derart gestaltet, dass der Druckabfall minimal wird.In order to adjust the pressure in the
Alternativ kann das Gaslager direkt aus dem Hochdruck gespeist werden, wobei der Gasstrom durch ein Druckminderer auf den minimal notwendigen Lagerdruck begrenzt wird.Alternatively, the gas bearing can be fed directly from the high pressure, wherein the gas flow is limited by a pressure reducer to the minimum necessary bearing pressure.
Die Kombination aus Druckminderungselement und zweitem Gasauslass ermöglicht minimale Verluste des Gaslagers, da der Gasmassenstrom minimal wird und die notwendige Verdichtungsarbeit für die Lagerversorgung minimal wird.The combination of pressure reducing element and second gas outlet allows minimal losses of the gas bearing, since the gas mass flow is minimal and the necessary compaction work for the storage supply is minimal.
Die Verbindung zwischen Kompressionsraum 1 und Gaslagerreservoir 25 wird über einen per Ventil 31 verschließbaren Kanal 30 gemäß
Das Volumen des Gasreservoirs 25 wird so gewählt, dass das Gaslager bei repetierendem Betrieb zuverlässig aus dem Reservoir 25 gespeist wird, insbesondere wenn während des Teils des Verdichtungszyklus bzw. Ansaugzyklus das Reservoir nicht aus dem Hochdruckraum 20 gespeist wird.The volume of the
Speziell für den Anlauf des Verdichters kann das Gasreservoir 25 mit einem Auslassventil 26 versehen werden. Dadurch kann der Druck im Reservoir 25 dauerhaft oder zumindest länger gehalten werden, wodurch die Zeitdauer, in der der Kompressor ausgeschaltet bleiben kann, ohne dass das Gaslager die Tragfähigkeit verliert, verlängert werden kann. Vor dem Anlauf des Kolbens 2 wird das Auslassventil 26 des Gasreservoirs wieder geöffnet, um zunächst die Tragfähigkeit des Gaslagers wieder herzustellen und dann erst die Bewegung des Kolbens 2 zu beginnen.Especially for the start-up of the compressor, the
Eine Alternative des Anlaufs besteht darin, bei entleertem Gasreservoir 25 den Kolben 2 zunächst mit reduziertem Hub zu bewegen, um das Gasreservoir 25 unter Druck zu setzten. Sobald dadurch die Tragfähigkeit des Gaslagers gegeben ist, kann der Hub auf Normalhub erhöht werden und der normale Verdichterbetrieb beginnt.An alternative of start-up is, with the
Eine weitere Alternative wäre ein Auslassventil des Kompressionsraums, das unabhängig vom Druck hinter dem Auslassventil erst ab einem bestimmten Druck öffnet. Dadurch kann erreicht werden, dass beim Anlauf des Verdichters zunächst das Gasreservoir 25 gefüllt wird und erst dann der Nutzgasstrom einsetzt.Another alternative would be an exhaust valve of the compression chamber, which opens independent of the pressure behind the exhaust valve only from a certain pressure. It can thereby be achieved that during start-up of the compressor first the
Claims (7)
- Compressor with gas bearing and with a compression chamber (1), wherein the gas bearing is a self-supplying gas bearing in which the supply pressure is independent of the conveying pressure, wherein a gas reservoir (25) with bearing supply pressure is present, characterised in that a channel (40) with an anisotropic flow resistance (41) is present between compression chamber (1) and gas reservoir.
- Compressor according to claim 1, characterised in that the supply of the bearing is undertaken at a lower pressure than the compression end pressure.
- Compressor according to claim 1, characterised in that the supply of the bearing is fed from the high pressure by way of a pressure reducer.
- Compressor according to claim 3, characterised in that the pressure reducer is fed from a separate tap in the compression chamber.
- Compressor according to claim 1, characterised in that means for ensuring the gas bearing support capability in the case of repeating operation of the gas bearing are present.
- Compressor according to claim 1, characterised in that the gas reservoir (25) is constantly under pressure.
- Compressor according to any one of the preceding claims, characterised in that at least one channel (30) with valve (31) is present between compression chamber (1) and gas reservoir (25).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005053836A DE102005053836A1 (en) | 2005-11-09 | 2005-11-09 | compressor |
PCT/EP2006/067795 WO2007054437A1 (en) | 2005-11-09 | 2006-10-26 | Compressor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1948928A1 EP1948928A1 (en) | 2008-07-30 |
EP1948928B1 true EP1948928B1 (en) | 2011-03-23 |
Family
ID=37547079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06807564A Not-in-force EP1948928B1 (en) | 2005-11-09 | 2006-10-26 | Compressor |
Country Status (8)
Country | Link |
---|---|
US (1) | US20090301293A1 (en) |
EP (1) | EP1948928B1 (en) |
CN (1) | CN101305186B (en) |
AT (1) | ATE503111T1 (en) |
DE (2) | DE102005053836A1 (en) |
ES (1) | ES2360729T3 (en) |
RU (1) | RU2411394C2 (en) |
WO (1) | WO2007054437A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101397083B1 (en) | 2011-09-06 | 2014-06-30 | 엘지전자 주식회사 | Reciprocating motor and reciprocating compressor having the same |
BR102013003056A2 (en) * | 2013-02-07 | 2014-09-16 | Whirlpool Sa | FLOW RESTRICTOR AND GAS COMPRESSOR |
JP6307527B2 (en) | 2013-03-13 | 2018-04-04 | ホーデン トマセン コンプレッサーズ ビーブイ | Horizontal piston compressor |
KR102278769B1 (en) * | 2014-06-24 | 2021-07-20 | 엘지전자 주식회사 | A linear compressor |
US9932975B2 (en) * | 2015-01-16 | 2018-04-03 | Haier Us Appliance Solutions, Inc. | Compressor |
CN106401908A (en) * | 2015-07-17 | 2017-02-15 | 姚宏志 | High-efficiency refrigerant compressor |
CN107101409B (en) * | 2017-05-17 | 2018-01-23 | 宁利平 | Double acting α type sterlin refrigerators |
KR102495256B1 (en) * | 2018-05-16 | 2023-02-02 | 엘지전자 주식회사 | Linear compressor |
CN111365909B (en) * | 2018-12-25 | 2024-04-05 | 珠海格力电器股份有限公司 | Refrigerant circulation system, air conditioning equipment and control method of refrigerant circulation system |
KR102430411B1 (en) * | 2020-12-07 | 2022-08-09 | 엘지전자 주식회사 | Linear compressor |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2907304A (en) * | 1957-04-04 | 1959-10-06 | Macks Elmer Fred | Fluid actuated mechanism |
GB923732A (en) * | 1960-05-27 | 1963-04-18 | Atomic Energy Authority Uk | Improvements in or relating to free piston compressors with gas bearings |
DE1945924A1 (en) * | 1969-09-11 | 1971-03-18 | Lenger Karl Werner | Free piston machine |
JPS5970830A (en) * | 1982-10-15 | 1984-04-21 | Hitachi Ltd | Turbosupercharger |
JP3089270B2 (en) * | 1990-02-26 | 2000-09-18 | 日本精工株式会社 | Hydrostatic gas bearing |
JPH08312582A (en) * | 1995-05-23 | 1996-11-26 | Daikin Ind Ltd | Reversal preventing device for compressor |
DE10257951A1 (en) * | 2002-12-12 | 2004-07-01 | Leybold Vakuum Gmbh | piston compressor |
JP4427248B2 (en) * | 2002-12-17 | 2010-03-03 | 株式会社東芝 | Gas bearing device |
-
2005
- 2005-11-09 DE DE102005053836A patent/DE102005053836A1/en not_active Withdrawn
-
2006
- 2006-10-26 WO PCT/EP2006/067795 patent/WO2007054437A1/en active Application Filing
- 2006-10-26 AT AT06807564T patent/ATE503111T1/en active
- 2006-10-26 ES ES06807564T patent/ES2360729T3/en active Active
- 2006-10-26 US US12/084,733 patent/US20090301293A1/en not_active Abandoned
- 2006-10-26 CN CN2006800417386A patent/CN101305186B/en not_active Expired - Fee Related
- 2006-10-26 EP EP06807564A patent/EP1948928B1/en not_active Not-in-force
- 2006-10-26 RU RU2008119085/06A patent/RU2411394C2/en not_active IP Right Cessation
- 2006-10-26 DE DE502006009174T patent/DE502006009174D1/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN101305186A (en) | 2008-11-12 |
ATE503111T1 (en) | 2011-04-15 |
CN101305186B (en) | 2010-08-18 |
RU2411394C2 (en) | 2011-02-10 |
ES2360729T3 (en) | 2011-06-08 |
DE102005053836A1 (en) | 2007-05-10 |
EP1948928A1 (en) | 2008-07-30 |
US20090301293A1 (en) | 2009-12-10 |
DE502006009174D1 (en) | 2011-05-05 |
WO2007054437A1 (en) | 2007-05-18 |
RU2008119085A (en) | 2009-12-20 |
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