EP1831565B1 - Verdichter für ein kältegerüt - Google Patents

Verdichter für ein kältegerüt Download PDF

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Publication number
EP1831565B1
EP1831565B1 EP05813686A EP05813686A EP1831565B1 EP 1831565 B1 EP1831565 B1 EP 1831565B1 EP 05813686 A EP05813686 A EP 05813686A EP 05813686 A EP05813686 A EP 05813686A EP 1831565 B1 EP1831565 B1 EP 1831565B1
Authority
EP
European Patent Office
Prior art keywords
chamber
piston
coating
compressor
refrigerating appliance
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
Application number
EP05813686A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1831565A1 (de
Inventor
Erich Hell
Jan-Grigor Schubert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1831565A1 publication Critical patent/EP1831565A1/de
Application granted granted Critical
Publication of EP1831565B1 publication Critical patent/EP1831565B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F04B39/10—Adaptations or arrangements of distribution members
    • 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
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/08—Ceramics; Oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2253/00—Other material characteristics; Treatment of material
    • F05C2253/12—Coating

Definitions

  • the present invention relates to a refrigerator having a linear compressor for compressing refrigerant with a chamber, a piston movable in the chamber, and valves arranged between the chamber and a suction port and a pressure port defining the flow direction through the compressor from the suction port to the pressure port.
  • the US 4,966,789 indicates as a coating material for valves a coating from the group of silicon carbides, metal carbides, metal nitrides.
  • the object of the invention is to provide a refrigeration device with a linear compressor whose valves have a particularly long service life.
  • This object is achieved in that on moving parts of the valves of the linear compressor, a coating is applied, which is harder than said moving parts, and that the coating is formed by superficial reaction of the material of the moving parts.
  • a particularly close bond between the movable part and the coating formed thereon, in particular ceramic layer, is obtained if the coating is formed by superficial reaction of the material of the moving parts.
  • a hard coating is in particular a ceramic coating into consideration.
  • the material of the ceramic coating in particular oxides, nitrides, carbides or a mixture of several of these substances come into consideration.
  • a spring steel is preferably used as a material for the moving parts.
  • the invention is particularly advantageously applicable to a compressor comprising a linear drive unit acting directly on the piston, for such compressors, as they consist, for example US 6 641 377 B2 are known, in comparison to the rotationally driven compressors have a relatively small piston stroke and therefore have to work with a high frequency of movement and accordingly frequent switching of the valves in order to achieve a required throughput.
  • the invention is advantageously applicable when the piston is stored oil-free in the chamber. While in oil-bearing pistons usually a thin film of oil covers the entire interior of the chamber including the valves, which favors the heat dissipation from the moving parts of the valves, the heat dissipation from the moving parts in oil-free operation is usually much worse, and accordingly great is the thermal load and consequently the tendency of these moving parts to wear.
  • the lower region of the linear compressor shown in FIG. 1 forms a drive unit 1. It comprises a permanent magnetic oscillating body 2 whose longitudinal ends each form opposite magnetic poles.
  • the vibrating body 2 extends through two opposite openings 3 of a chamber 4 which is provided to receive a pair of electromagnets 8.
  • the electromagnets 8, which are diametrically opposite each other on either side of the oscillating body 2, can be connected to an alternating current of controlled frequency in order to generate alternating magnetic fields, each having opposed poles of the same name.
  • the Electromagnets 8 have an iron core 9 of E-shaped cross-section with three parallel legs 11, 12 connected at one end. A winding 10 respectively surrounds the middle leg 11 of each iron core. The tip of the middle leg 11, on the one hand, and the two outer legs 12, on the other hand, each form different pole of each electromagnet 8.
  • the poles alternately attract one of the poles of the oscillating body 2 and the other at the tips of the legs 12, thereby deflecting the vibrating body 2 alternately in opposite directions.
  • each arm 7 receives a 90 ° sector extending from the longitudinal axis of the oscillating body 2, and each arm 7 is shaped in mirror image to the two adjacent arms 7.
  • a compression chamber is connected to the chamber 4 of the electromagnet via an arc 21, which is attached via the opposite ends of the oscillating body of the arms 7 of the upper diaphragm spring 5 to the webs 6 of the top of the chamber 4.
  • a piston rod 22 connects a reciprocating in the compression chamber 20 piston 23 with the vibrating body 2, so that both form a vibratory system whose natural frequency substantially by the mass of the oscillating body 2, the piston 23 and the piston rod 22 and the spring constant the diaphragm spring 5 is fixed.
  • a suction port 24 and a pressure port 25 each open via an inlet valve 26 and an outlet 27 into the compression chamber 20.
  • the valves 26, 27 are exemplified here as plate valves, each with a spring leaf 28 at one end to the wall of the compressor chamber 20 is soldered or fastened in another suitable manner and in its movable portion carries a sealing body 29, which in the in Fig. 1 Each shown configuration contacts a hollow conical valve seat 30, which is formed in the wall of the compression chamber 20.
  • the spring leaf 28 is formed in each case from spring steel.
  • the sealing body 29 can be completely realized as a fixed to the spring leaf 28 ceramic layer; it may also be made of spring steel in the core and be provided with only an outer coating which is too thin to be represented in the figure. In the latter case, the sealing body 29 is preferably formed integrally from the material of the spring leaf 28 by embossing.
  • the outlet valve 27 is in a separate chamber 31 within the wall of the compression chamber into which it can retreat to allow fluid displaced by the upwardly moving piston 23 to flow to the pressure port.
  • a passage 32 From the chamber 31 is a passage 32, which feeds a compression chamber 20 annularly surrounding cavity 33 with compressed fluid.
  • the cavity 33 communicates with the interior of the compression chamber 20 via a plurality of radial bores 24 through which a portion of the fluid displaced by the piston 23 can flow back into the compression chamber 20. It forms a sliding film between the inner wall of the compression chamber 20 and the peripheral surface of the piston 23, which allows it to slide largely frictionless and allows to dispense with oil lubrication of the piston 23.
  • the wear-reducing hard surface layer may be limited to those surface areas of the sealing body 29 that actually come into contact with the valve seat 30; but it can also extend over the entire sealing body or, especially if it is integrally formed from the spring leaf 28, over the entire surface of the spring leaf 28 or at least the valve seat 30 side facing it.
  • It can be produced by reacting a surface layer of the A sealing body in a reactive, for example, oxygen-containing atmosphere or in an oxygen, nitrogen and / or carbon-containing plasma to an oxide, nitride or carbide, wherein the reacted surface layer is a part of the spring steel of the sealing body 29 itself or in advance for the purpose of implementation applied thereto material can, or it is immediately the desired ceramic material such as alumina or zirconia, for example in the form of a suspension or a gel brushed or sprayed on the surface in question and then sintered thereon.
  • a reactive for example, oxygen-containing atmosphere or in an oxygen, nitrogen and / or carbon-containing plasma
  • oxide, nitride or carbide wherein the reacted surface layer is a part of the spring steel of the sealing body 29 itself or in advance for the purpose of implementation applied thereto material can, or it is immediately the desired ceramic material such as alumina or zirconia, for example in the form of a suspension or a gel brushed or sprayed on

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP05813686A 2004-12-23 2005-11-30 Verdichter für ein kältegerüt Not-in-force EP1831565B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004062297A DE102004062297A1 (de) 2004-12-23 2004-12-23 Verdichter für ein Kältegerät
PCT/EP2005/056347 WO2006069883A1 (de) 2004-12-23 2005-11-30 Verdichter für ein kältegerät

Publications (2)

Publication Number Publication Date
EP1831565A1 EP1831565A1 (de) 2007-09-12
EP1831565B1 true EP1831565B1 (de) 2010-02-10

Family

ID=35734942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05813686A Not-in-force EP1831565B1 (de) 2004-12-23 2005-11-30 Verdichter für ein kältegerüt

Country Status (8)

Country Link
US (1) US20080112829A1 (ru)
EP (1) EP1831565B1 (ru)
CN (1) CN101087956A (ru)
AT (1) ATE457426T1 (ru)
DE (2) DE102004062297A1 (ru)
ES (1) ES2338906T3 (ru)
RU (1) RU2387874C2 (ru)
WO (1) WO2006069883A1 (ru)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8028409B2 (en) 2005-08-19 2011-10-04 Mark Hanes Method of fabricating planar spring clearance seal compressors
DE102006052447A1 (de) 2006-11-07 2008-05-08 BSH Bosch und Siemens Hausgeräte GmbH Linearverdichter und Gasdrucklager dafür
WO2008108752A1 (en) * 2007-03-02 2008-09-12 Pv-Med, Inc. Method of fabricating a compressor having planar spring and gas bearing
US8607560B2 (en) 2008-02-28 2013-12-17 Superconductor Technologies, Inc. Method for centering reciprocating bodies and structures manufactured therewith
BRPI1103355A2 (pt) * 2011-07-04 2013-07-23 Whirlpool Sa dispositivo adaptador para compressor linear, e compressor provido do referido dispositivo
BRPI1103647A2 (pt) * 2011-07-07 2013-07-02 Whirlpool Sa disposiÇço entre componentes de compressor linear
BRPI1103447A2 (pt) * 2011-07-19 2013-07-09 Whirlpool Sa feixe de molas para compressor e compressor provido de feixe de molas
BRPI1104172A2 (pt) * 2011-08-31 2015-10-13 Whirlpool Sa compressor linear baseado em mecanismo oscilatório ressonante
US11512686B2 (en) * 2019-04-05 2022-11-29 Montana Technological University Mechanical resonant pump

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1669889A (en) * 1922-04-17 1928-05-15 Couzens Ice Machine Company Compressor valve
US3586456A (en) * 1968-06-17 1971-06-22 Sira Compressors for fluids
US4059367A (en) * 1976-04-26 1977-11-22 Richard Clarence Marshall Gaseous fluid compressing apparatus
IT1182433B (it) 1985-02-12 1987-10-05 Gevipi Ag Organi di tenuta in materiale duro aventi basso coefficiente di attrito
US4948764A (en) * 1986-09-16 1990-08-14 Lanxide Technology Company, Lp Production of ceramic and ceramic-metal composite articles with surface coatings
ATE77869T1 (de) * 1987-02-27 1992-07-15 Willy Ernst Salzmann Pendelkolbenmaschine.
US4960643A (en) * 1987-03-31 1990-10-02 Lemelson Jerome H Composite synthetic materials
US5960825A (en) * 1997-06-26 1999-10-05 Copeland Corporation Laser hardened reed valve
US6073648A (en) * 1999-04-26 2000-06-13 Watson Grinding And Manufacturing Company Metal element having a laminated coating
WO2004036723A1 (ja) 2002-10-16 2004-04-29 Matsushita Refrigeration Company リニアモータとそれを用いたリニアコンプレッサ
WO2004061306A1 (ja) * 2002-12-27 2004-07-22 Zexel Valeo Climate Control Corporation 超臨界冷凍サイクル用の斜板式可変容量コンプレッサ
NZ526361A (en) * 2003-05-30 2006-02-24 Fisher & Paykel Appliances Ltd Compressor improvements

Also Published As

Publication number Publication date
DE502005009014D1 (de) 2010-03-25
CN101087956A (zh) 2007-12-12
RU2387874C2 (ru) 2010-04-27
WO2006069883A1 (de) 2006-07-06
RU2007121325A (ru) 2009-01-27
DE102004062297A1 (de) 2006-07-13
EP1831565A1 (de) 2007-09-12
US20080112829A1 (en) 2008-05-15
ATE457426T1 (de) 2010-02-15
ES2338906T3 (es) 2010-05-13

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