EP1831555A1 - Compresseur lineaire - Google Patents

Compresseur lineaire

Info

Publication number
EP1831555A1
EP1831555A1 EP05813374A EP05813374A EP1831555A1 EP 1831555 A1 EP1831555 A1 EP 1831555A1 EP 05813374 A EP05813374 A EP 05813374A EP 05813374 A EP05813374 A EP 05813374A EP 1831555 A1 EP1831555 A1 EP 1831555A1
Authority
EP
European Patent Office
Prior art keywords
piston
linear compressor
pumping chamber
übertragerstange
compressor according
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
Application number
EP05813374A
Other languages
German (de)
English (en)
Other versions
EP1831555B1 (fr
Inventor
Jan Brand
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 EP1831555A1 publication Critical patent/EP1831555A1/fr
Application granted granted Critical
Publication of EP1831555B1 publication Critical patent/EP1831555B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Definitions

  • the present invention relates to a linear compressor, in particular a linear compressor, which is suitable for compressing refrigerant in a refrigerator.
  • a linear compressor having a pumping chamber in which a piston is reciprocable is fixed to a frame fixed to the pumping chamber, to which a vibrating body is reciprocated by at least one spring, one mounted to the frame Electromagnet for driving the reciprocating motion of the vibrating body and a piston rod known, which connects the vibrating body to the piston.
  • the spring is a diaphragm spring, the edge of which is fastened to the annular space surrounding the pumping chamber and screwed to the center of the cup-shaped oscillating body and one end of the piston rod.
  • the other end of the piston rod is spherical and engages a cup formed on the piston so that the piston rod and the piston are pivotally movable with respect to one another.
  • the pivotal mobility prevents the transmission of torque from the vibrating body via the piston rod to the piston, which could cause the piston in the pumping chamber to tilt and become difficult to move.
  • the piston In order to achieve sufficient security against tilting, the piston must have a considerable length. Accordingly, a lot of space for the piston is required in the pumping chamber, so that the ratio of pumping chamber volume to throughput is rather unfavorable.
  • piston rod can also transmitted transversely to the direction of movement of the piston in the pumping chamber oriented forces on the piston, this against a
  • the gas film formed along the side wall prevents direct contact between the pump chamber wall and the piston, if the gas flow rate is high enough.
  • the object of the invention is to provide a linear compressor in which the transmission of lateral forces from the vibrating body is minimized to the piston.
  • the object is achieved in that the connection of a jointed with the piston Mattertragerstange is formed with the oscillating body by a second joint.
  • the Studentstange can thus essentially only tensile and shear forces transmitted to the piston, but no significant lateral forces.
  • the two joints can be particularly simple and inexpensive each formed by an elastically flexible rod.
  • this rod is formed in one piece with the Sprinttragerstange and thinner than this, in order to achieve the required degree of flexibility.
  • the first joint preferably connects the Studentstange with a rigidly anchored to the piston and guided in the pumping chamber piston rod.
  • Fig. 1 is a perspective view of a linear compressor according to the invention
  • Fig. 2 in detail the Mattertragerstange, the pumping chamber and a part of
  • the linear compressor shown in Figure 1 in perspective view has a rigid, in plan view in approximately U-shaped frame, which is composed of three parts, namely two flat wall pieces 1 and a sheet 2. Between facing narrow 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 attached to the side facing away from the bow narrow sides of the wall pieces 1.
  • the stamped from spring plate diaphragm springs 3, 4 each have an elongated edge strip which covers the narrow sides of the wall pieces 1, and four spring arms 5 which extend in a zigzag from the ends of the edge strips to a central portion 6, where they meet.
  • the central portion 6 has three 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. by screw fastened rod portion 10 extends.
  • the rod portion 10 is connected to a transmission rod 9 formed in the present case of spring steel via a flexibly flexible tapered portion 11.
  • a second tapered portion 12 connects the transmission rod 11 integrally with a piston rod 13, which engages in a pumping chamber 14 supported by the arc 2, is guided through a bore in an end wall of the pumping chamber and in the pumping chamber 14 with a movable piston 15 (see Figure 2) is connected.
  • Two electromagnets 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 facing pole pieces and serve to drive a vibrating movement of the vibrating body.
  • the pumping chamber 14 is annularly surrounded by a cavity 16 which communicates with the pumping chamber 14 through a plurality of openings 17 in its side wall and which is fed via a passage 18 with compressed gas branched from a pressure port 19 of the pumping chamber.
  • the penetrating through the openings 17 in the pumping chamber 14 compressed gas forms on the side wall a cushion on which the piston 15 slides substantially frictionless.
  • the transmitter rod 9, as shown in Figure 2 extends straight between the vibrating body 8 and the piston 15, and the directions of movement of the vibrating body 8 and the piston 15 are exactly parallel.
  • deviations from such an ideal configuration always occur due to manufacturing tolerances, be it that the pump chamber 14 is not exactly aligned with the oscillating body 8, or that due to tolerances in the attachment of the diaphragm spring 3, 4 on the frame and the oscillating body. 8 the direction of movement of the oscillating body 8 does not coincide with that of the piston 15.
  • FIG. 3 shows in a representation analogous to FIG. 2 the case of a lateral offset between oscillating body 8 and piston 15.
  • the longitudinal axes of head portion 10 and piston rod 13 are parallel, but not collinear. The deviation is absorbed by a slight elastic bending of the tapered sections, 12 and a slight inclination of the Mattertragerstange 9.
  • the piston 15 reciprocates in the pumping chamber 14, without him acting on significant tilting torques or lateral forces, the piston 15 Press against a wall of the pumping chamber 14.
  • the clearance between the piston 15 and pump chamber wall can therefore be kept small, so that only a small gas flow rate is required for the storage of the piston 15 and a correspondingly high efficiency of the compressor can be achieved.
  • Figure 4 shows the case of a not exactly parallel alignment of the directions of movement of the oscillating body 8 and piston 15. This is compensated by means of the flexible tapered sections 11, 12, wherein the Sprintmanbar 9, as shown in each case by dashed lines, not between the reversal points of their movement only a shift, but also performs a slight turn.
  • the tapered sections 11, 12 could also be replaced by ball joints or cardan joints;
  • the version with tapered sections is particularly suitable for miniaturization and inexpensive to manufacture.

Landscapes

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

Abstract

L'invention concerne un compresseur linéaire comprenant une chambre de pompe (14) dans laquelle un piston (15) va et vient, un cadre (1, 2) qui est solidaire de la chambre de pompe (14) et contre lequel un corps flottant (8) est maintenu en va-et-vient par au moins un ressort (4, 5), au moins un électro-aimant monté sur le cadre (1, 2) et destiné à entraîner le mouvement de va-et-vient du corps flottant (8). Une tige de translation (9) est raccordée au piston (15) par une première articulation (12) et au corps flottant (8) par une deuxième articulation (11).
EP05813374.5A 2004-12-23 2005-11-29 Compresseur linéaire Expired - Lifetime EP1831555B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004062300A DE102004062300A1 (de) 2004-12-23 2004-12-23 Linearverdichter
PCT/EP2005/056297 WO2006069873A1 (fr) 2004-12-23 2005-11-29 Compresseur lineaire

Publications (2)

Publication Number Publication Date
EP1831555A1 true EP1831555A1 (fr) 2007-09-12
EP1831555B1 EP1831555B1 (fr) 2017-01-11

Family

ID=35734915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05813374.5A Expired - Lifetime EP1831555B1 (fr) 2004-12-23 2005-11-29 Compresseur linéaire

Country Status (6)

Country Link
US (1) US20080019852A1 (fr)
EP (1) EP1831555B1 (fr)
CN (1) CN101087951B (fr)
DE (1) DE102004062300A1 (fr)
RU (1) RU2392495C2 (fr)
WO (1) WO2006069873A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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NZ526361A (en) * 2003-05-30 2006-02-24 Fisher & Paykel Appliances Ltd Compressor improvements
DE102004062298A1 (de) * 2004-12-23 2006-07-13 BSH Bosch und Siemens Hausgeräte GmbH Linearverdichter
BRPI1103357A2 (pt) 2011-07-04 2013-07-23 Whirlpool Sa haste ou biela para compressor linear
BRPI1104172A2 (pt) * 2011-08-31 2015-10-13 Whirlpool Sa compressor linear baseado em mecanismo oscilatório ressonante
US9496778B2 (en) 2012-08-22 2016-11-15 Ta Instruments-Waters L.L.C. Electromagnetic motor
RU2749795C1 (ru) * 2020-10-19 2021-06-17 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный аграрный университет" (ФГБОУ ВО Казанский ГАУ) Поршневой акустический нагнетатель газа

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Also Published As

Publication number Publication date
US20080019852A1 (en) 2008-01-24
CN101087951A (zh) 2007-12-12
RU2392495C2 (ru) 2010-06-20
DE102004062300A1 (de) 2006-07-13
RU2007121770A (ru) 2009-01-27
CN101087951B (zh) 2010-11-03
WO2006069873A1 (fr) 2006-07-06
EP1831555B1 (fr) 2017-01-11

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