EP2064445B1 - Compresseur à piston alternatif - Google Patents

Compresseur à piston alternatif Download PDF

Info

Publication number
EP2064445B1
EP2064445B1 EP07788285A EP07788285A EP2064445B1 EP 2064445 B1 EP2064445 B1 EP 2064445B1 EP 07788285 A EP07788285 A EP 07788285A EP 07788285 A EP07788285 A EP 07788285A EP 2064445 B1 EP2064445 B1 EP 2064445B1
Authority
EP
European Patent Office
Prior art keywords
compressor
cylinder
end wall
compressor according
leaf spring
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
EP07788285A
Other languages
German (de)
English (en)
Other versions
EP2064445A1 (fr
Inventor
Marco Giacchi
Thorsten Kusnik
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 EP2064445A1 publication Critical patent/EP2064445A1/fr
Application granted granted Critical
Publication of EP2064445B1 publication Critical patent/EP2064445B1/fr
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
    • F04B39/1066—Valve plates
    • 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
    • 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
    • F04B39/1086—Adaptations or arrangements of distribution members the members being reed valves flat annular reed valves

Definitions

  • the present invention relates to a compressor having a cylinder which includes a compression chamber of circular cross-section in which a reciprocating piston is reciprocally movable.
  • Inlet and outlet openings for a medium to be compressed are often both arranged on an end wall of the cylinder.
  • the piston in the compression chamber must not be rotatable about its longitudinal axis.
  • a conventional, driven by a rotating engine via a crank mechanism reciprocating piston this is not a problem.
  • rotation of the piston about the longitudinal axis is not excluded. If such a rotatable piston is provided with a projection in the manner described above, there is a risk that the projection after a rotation of the piston no longer hits the outlet opening and instead strikes against the end wall of the cylinder, resulting in the destruction of the compressor can. See also GB 392,811 with the state of the art.
  • the object of the invention is to provide a compressor which achieves high efficiency, without a rotation of the piston in the compressor chamber about its longitudinal axis must be constructively excluded.
  • the latter preferably has a non-circular cross-section whose dimension in the circumferential direction of the cylinder is greater than in the radial direction.
  • the inlet opening may have a cross section in the form of a circular arc.
  • a plurality of inlet openings distributed around the outlet opening may be provided. These are expediently distributed along a circular arc.
  • the circular arc is expediently concentric to the longitudinal axis. Preferably, it extends over an angle of less than 180 °. The latter is particularly useful in order to shut off the entire inlet cross-section with a single shut-off.
  • shut-off body is preferably acted upon by a arranged in the compression chamber first leaf spring against the inlet opening.
  • the outlet opening In order to prevent the leaf spring blocking the outlet opening, it is preferably provided with an opening through which the longitudinal axis of the cylinder extends.
  • a second shut-off body is preferably acted upon by a arranged on the outside of the end wall second leaf spring against the outlet opening.
  • each leaf spring is held by at least two rivets to prevent twisting of the leaf spring, which could cause the locking body no longer properly obscured the associated opening.
  • Fig. 1 shows by way of example the construction of a linear compressor for a refrigeration device, which represents a preferred application of the invention.
  • the linear compressor has a rigid, in plan view approximately U-shaped frame, which is composed of two flat wall pieces 1 and a sheet 2. Between two mutually facing end sides of the sheet 2 and the two wall pieces 1, a first diaphragm spring 3 is clamped, a second diaphragm spring 4 of the same shape as the diaphragm spring 3 is fixed to the side facing away from the sheet 2 of the wall pieces 1.
  • the stamped from spring plate diaphragm springs 3, 4 each have four spring arms 5, which extend in a zigzag from the wall pieces 1 to a central portion 6, with which they meet.
  • the central portion 6 has two holes, two outer to which by means of screws or rivets 7, a permanent magnetic oscillating body 8 is suspended, and a central bore, through which in the diaphragm spring 3 a to the oscillating body 8 z.
  • B. fastened by screwing Piston rod 10 extends.
  • the piston rod 10 connects the oscillating body 8 with a reciprocating piston, not visible in the figure, in the interior of a cylinder 15, which is carried by the arch 2.
  • Refrigerant inlet and outlet ports of the pumping chamber are designated 16 and 17, respectively.
  • Two electromagnets 9 with E-shaped yoke and a wound around the middle leg of the E coil are each arranged between the oscillating body 8 and the wall pieces 1 with the oscillating body 8 pole pieces and serve to drive a swinging motion of the oscillating body 8.
  • a control circuit 37 supplies the Electromagnets 9 with an alternating current, whose frequency is adapted to the natural frequency of the oscillatory system, which is formed by the diaphragm springs 3, 4, the oscillating body 8 and driven by him lifting piston.
  • the cylinder 15 is, as in Fig. 1 recognizable, divided into a main body 11 in which the reciprocating piston is guided to and fro, a valve plate 12 which forms an end wall of a recessed in the main body compressor chamber, and a cap 13, on which the inlet and outlet ports 16, 17 are located ,
  • the structure of the cylinder is clearer by the exploded view of the Fig. 2 ,
  • the main body 11 is in the Fig. 2 omitted; the outline of the compressor chamber extending in the main body is indicated on the valve plate 12 as a dashed circle 14.
  • the longitudinal axis of the compression chamber is shown in dash-dotted line.
  • a circular outlet bore 18 is arranged exactly coaxially with the longitudinal axis.
  • a circular arc-shaped slot extends about an angle of about 120 ° around the outlet bore 18 around and forms an inlet opening 19 of the compression chamber.
  • an opening 28 is cut, which, when the leaf spring 23 is riveted to the valve plate 12, the outlet hole 18 leaves free.
  • the tongue 27 of the leaf spring 22 abuts against the outlet bore 18 from the outside, with its tip acting as a shut-off valve of the outlet valve.
  • the interior of the cap 13 is divided by an intermediate wall 29 into a suction-side cavity 30 and a pressure-side cavity 31, to which the refrigerant inlet nozzle 16 or outlet nozzle 17 opens and which communicate with the compressor chamber via the inlet opening 19 and the outlet bore 18, respectively.
  • the designated piston 32 has at its in the perspective of Fig. 2 Side facing away from the viewer to a longitudinal axis concentric projection 33 whose length and diameter of the common thickness of the valve plate 12 and the leaf spring 23 and the diameter of the outlet bore 18 correspond. At a top dead center of the movement of the reciprocating piston 32 when it almost touches the leaf spring 23 pressed against the valve plate 12 by the pressure prevailing in the compression chamber, the projection 33 enters the outlet bore 18 and displaces residual gas contained therein.
  • Fig. 3 shows a section through the main body 11 of the compression chamber and the reciprocating piston 32. It can be seen that the compression chamber 14 is surrounded by an annular cavity 34 which communicates with the compression chamber 14 through a plurality of small openings 35.
  • the cavity 34 extends in the longitudinal direction of the compression chamber 14 from the top to bottom dead center of the reciprocating piston 32. It is via a bore 36 of the valve plate 12 with the pressure-side cavity 31 of the cap 13 connected and fed in this way with compressed refrigerant that penetrates in small quantities through the openings 35 in the compression chamber 14 and so between the walls and the reciprocating piston 32 forms a gas cushion on which the reciprocating piston 32 is friction and low-wear movable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Claims (8)

  1. Compresseur comprenant un cylindre (15) dans lequel une chambre de compresseur (14) de section circulaire est formée, des ouvertures d'entrée et de sortie (18, 19) pour un milieu à comprimer étant formées dans une paroi frontale (12) du cylindre (15), et comprenant un piston élévateur (32) effectuant un mouvement alternatif dans la chambre de compresseur (14), lequel piston porte, sur sa surface tournée vers la paroi frontale (12), une saillie d'expulsion (33) qui s'engage dans l'ouverture de sortie (18) lorsque le piston élévateur (32) se trouve dans une position de point mort, l'axe longitudinal du cylindre (15) passant par l'ouverture de sortie (18), caractérisé en ce qu'une ouverture d'entrée (19) a une section en forme d'arc de cercle dont la dimension est plus grande dans la direction circonférentielle du cylindre que dans la direction radiale ou en ce qu'une pluralité d'ouvertures d'entrée sont réparties le long d'un arc de cercle entourant l'ouverture de sortie.
  2. Compresseur selon la revendication 1, caractérisé en ce que l'arc de cercle s'étend sur un angle inférieur à 180°.
  3. Compresseur selon l'une des revendications précédentes, caractérisé en ce qu'un premier corps d'arrêt (38) est sollicité contre l'ouverture d'entrée (19) par un premier ressort à lames (23) situé dans la chambre de compresseur.
  4. Compresseur selon la revendication 3, caractérisé en ce que le ressort à lames (23) est fixé en un endroit de la paroi frontale (12) diamétralement opposé à l'ouverture d'entrée (19).
  5. Compresseur selon la revendication 4, caractérisé en ce que le ressort à lames (23) comporte une ouverture (28) à travers laquelle passe l'axe longitudinal du cylindre (15).
  6. Compresseur selon l'une des revendications précédentes, caractérisé en ce qu'un second corps d'arrêt (27) est sollicité contre l'ouverture de sortie (18) par un second ressort à lames (22) situé sur le côté extérieur de la paroi frontale.
  7. Compresseur selon l'une des revendications 3 à 5 et la revendication 6, caractérisé en ce que le premier et le second ressort à lames (22, 23) sont fixés sur la paroi frontale (12) au moyen d'au moins un rivet commun (24).
  8. Compresseur selon l'une des revendications précédentes, caractérisé par un moteur linéaire (1-9) pour commander le mouvement du piston (32).
EP07788285A 2006-09-07 2007-08-07 Compresseur à piston alternatif Not-in-force EP2064445B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006042015A DE102006042015A1 (de) 2006-09-07 2006-09-07 Hubkolbenverdichter
PCT/EP2007/058184 WO2008028736A1 (fr) 2006-09-07 2007-08-07 Compresseur à piston alternatif

Publications (2)

Publication Number Publication Date
EP2064445A1 EP2064445A1 (fr) 2009-06-03
EP2064445B1 true EP2064445B1 (fr) 2012-10-10

Family

ID=38596318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07788285A Not-in-force EP2064445B1 (fr) 2006-09-07 2007-08-07 Compresseur à piston alternatif

Country Status (6)

Country Link
US (1) US20100008801A1 (fr)
EP (1) EP2064445B1 (fr)
CN (1) CN101512152A (fr)
DE (1) DE102006042015A1 (fr)
RU (1) RU2450160C2 (fr)
WO (1) WO2008028736A1 (fr)

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB392811A (en) * 1932-10-03 1933-05-25 Teves Kg Alfred Improvements in electromagnetically actuated gas compressors
US2025240A (en) * 1934-10-20 1935-12-24 Universal Cooler Corp Refrigerant gas compressor
US2193123A (en) * 1936-02-28 1940-03-12 Roches Philip W Des Compressor valve
US2161769A (en) * 1936-03-23 1939-06-06 Mills Novelty Co Discharge valve for compressors and the like
US3509907A (en) * 1968-09-16 1970-05-05 Copeland Refrigeration Corp Compressor valving assembly
JPH0450470Y2 (fr) * 1987-04-16 1992-11-27
JPH04121477U (ja) * 1991-04-16 1992-10-29 サンデン株式会社 フリーピストン型コンプレツサー
US5147190A (en) * 1991-06-19 1992-09-15 General Motors Corporation Increased efficiency valve system for a fluid pumping assembly
US5265646A (en) * 1993-03-17 1993-11-30 Ingersoll-Rand Company Valve spacer plate
US5816783A (en) * 1993-05-19 1998-10-06 Hitachi, Ltd. Electrically driven hermetic compressor
US5454397A (en) * 1994-08-08 1995-10-03 Fel-Pro Incorporated Reed valve assembly and gas compressor incorporating same
BR9606480A (pt) * 1995-06-23 1998-07-14 Lg Electronics Inc Aparelho para suprimento de refrigerante líquido para compressor linear
KR100224186B1 (ko) * 1996-01-16 1999-10-15 윤종용 선형 압축기
WO1998001675A1 (fr) * 1996-07-09 1998-01-15 Sanyo Electric Co., Ltd. Compresseur lineaire
US6505032B1 (en) * 2000-05-26 2003-01-07 Xtremespectrum, Inc. Carrierless ultra wideband wireless signals for conveying application data
JP3058412B2 (ja) * 1997-12-30 2000-07-04 エルジー電子株式会社 リニア圧縮機の吐出バルブ装置
US6540492B2 (en) * 2001-04-09 2003-04-01 Carrier Corporation Compressor piston with reduced discharge clearance
US6913450B2 (en) * 2001-06-26 2005-07-05 Lg Electronics, Inc. Suction valve coupling structure for reciprocating compressor

Also Published As

Publication number Publication date
WO2008028736A1 (fr) 2008-03-13
US20100008801A1 (en) 2010-01-14
CN101512152A (zh) 2009-08-19
RU2450160C2 (ru) 2012-05-10
DE102006042015A1 (de) 2008-03-27
RU2009109832A (ru) 2010-10-20
EP2064445A1 (fr) 2009-06-03

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