WO2007098991A1 - Compresseur lineaire a tige de piston precontrainte elastiquement, et machine frigorifique - Google Patents

Compresseur lineaire a tige de piston precontrainte elastiquement, et machine frigorifique Download PDF

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Publication number
WO2007098991A1
WO2007098991A1 PCT/EP2007/050484 EP2007050484W WO2007098991A1 WO 2007098991 A1 WO2007098991 A1 WO 2007098991A1 EP 2007050484 W EP2007050484 W EP 2007050484W WO 2007098991 A1 WO2007098991 A1 WO 2007098991A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
compressor
linear compressor
spring
linkage
Prior art date
Application number
PCT/EP2007/050484
Other languages
German (de)
English (en)
Inventor
Georg Hannig
Theodor Planner
Jan-Grigor Schubert
Original Assignee
BSH Bosch und Siemens Hausgeräte 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 Hausgeräte GmbH filed Critical BSH Bosch und Siemens Hausgeräte GmbH
Priority to US12/223,898 priority Critical patent/US20100162733A1/en
Priority to EP07703979A priority patent/EP1991780A1/fr
Publication of WO2007098991A1 publication Critical patent/WO2007098991A1/fr

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
    • 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
    • F04B39/0005—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 adaptations of pistons
    • F04B39/0022—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 adaptations of pistons piston rods
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F04B53/144—Adaptation of piston-rods
    • F04B53/145—Rod shock absorber

Definitions

  • the invention relates to a linear compressor comprising a piston housing and a piston reciprocating therein along an axis, wherein the compressor piston is connected via a linkage with a drive for reciprocating, a refrigerator and a method for cooling or freezing a would.
  • a disadvantage of known solutions is that due to the thin bends the probability of buckling even during normal operation comparatively is high. As a result, it is necessary to develop for each application, ie for each compressor variant, its own specially adapted piston rod, so that the design-related delicate balance of transverse and axial stiffness is maintained. In addition, a connection of the piston rod to the piston and linear drive due to the small diameter of the bottlenecks is complicated.
  • the linear compressor according to the invention comprises a piston housing and a compressor piston reciprocating along an axis thereof, wherein the compressor piston is connected via a linkage with a drive for the reciprocating movement, wherein the linkage comprises a prestressed spring, in particular a helical spring.
  • the linkage may be formed by one or more piston rods.
  • a plurality of piston rods can be connected to each other in parallel and / or in series with each other.
  • the linear compressor can be oil-free. In particular, it has a gas pressure bearing, by means of which the compressor piston is mounted without contact in the piston housing during the reciprocating movement.
  • the linkage for transmitting a force of the drive to the compressor piston has a prestressed spring, i. a spring, which only changes its length when a predetermined threshold of a force amount is exceeded.
  • the spring may be made of a metal, in particular steel, as well as of plastics or composite materials.
  • fiber-reinforced springs such as e.g. carbon, glass and / or polyaramid fiber reinforced springs are used.
  • the spring is a helical spring lying on a block, i. adjacent turns touch each other, advantageously the surfaces of adjacent turns against each other under pressure.
  • a predetermined threshold of force i. certain predetermined amount of force are exceeded, so that adjacent spring coils are separated.
  • a compression pressure greater than zero can act along the interface.
  • the bias of the spring is greater than a train generated with the drive in the linkage tensile stress. This ensures that the spring is not further compressed or stretched and thus a hard coupling between the drive and the compressor piston is effected. In particular, this avoids that the linkage does not become a self-oscillating system due to the spring.
  • the linkage at least two sections each have a prestressed spring. It is particularly preferred, however, that the linkage as such is formed by the spring. As a result, a particularly soft coupling in the transverse direction is effected, which can accommodate a wide variety of vibration modes, in particular S-shaped bending of the linkage.
  • the linkage in particular with a spring portion, screwed to the drive and / or to the compressor piston.
  • a coil spring extending toward the block, it is possible to carry out the connection between the compressor piston and the drive in each case as a screw connection by using the turns of the helical spring at the ends as a thread, which is in contrast to the known fastening techniques by gluing or terminals is more reliable and cheaper.
  • the ratio of axial to transverse rigidity of the spring or of the linkage according to the invention is at least 20: 1, in particular at least 50: 1, preferably at least 200: 1.
  • the described linkage has a particularly good ratio of axial to transverse stiffness due to its design.
  • the same component can be used for different linear compressors, in particular linear compressors with different power levels, e.g. 40 watts, 80 watts, 120 watts or 160 watts.
  • a special adaptation of the linkage to the respective type of linear compressor is no longer necessary. As a result, the manufacturing cost of the linear compressor can be further reduced.
  • the compressor piston is guided in the piston housing by means of a housing wall having openings and a gaseous fluid, in particular a coolant, flowing through the openings.
  • the refrigerating machine according to the invention in particular a refrigerator and / or freezer or an air conditioning system, in particular an air conditioning system for motor vehicles, comprises the linear compressor according to the invention.
  • the advantageous properties of the linear compressor according to the invention thus transferred to the chiller and thus allow a particularly reliable as energy-saving operation of the chiller, which increases the application possibilities of the chiller, especially in mobile applications.
  • the method according to the invention for cooling or freezing a product comprises the refrigerating machine according to the invention. Due to the high reliability and the high efficiency of the chiller, a particularly reliable and energy-saving cooling or freezing of goods is possible. This allows a particularly fast and cost-effective cooling or freezing of goods.
  • FIG. 1 is a sectional view of a linear compressor according to the invention
  • Fig. 2 is a sectional view of a detail of another invention
  • Fig. 3 shows a linear compressor according to the invention in a perspective view
  • 4 shows an inventive refrigeration device.
  • FIG. 1 shows a longitudinal section through a detail of a linear compressor 1 according to the invention with a compressor piston 4, which has a drive 6 and a rod 5 for connecting the compressor piston 4 to the housing within a housing wall 14, which has openings 12 through which fluid flows Drive 6 has.
  • the rod 5 configured as a piston rod is formed by a coil spring 7 lying on a block, which is under a prestress.
  • the bias voltage is approximately 5 to 50 Newton, i. It must be expended in the axial direction of the rod 5 at least 5 to 50 Newton to separate adjacent windings 16 from each other. Due to the leverage effect, however, only 0.14 to 1.4 Newtons are required in the transverse direction to cause the lever shown here to lift one turn from its adjacent turn.
  • the compressor piston 4 moves in the form of a cylinder sleeve housing wall 14 on an axis 3 back and forth.
  • the piston 4 is supported by means of a fluid 17, which flows between the housing wall 14 and the piston housing 2 through the openings 12.
  • the flowing fluid forms a gas cushion, so that a gas pressure bearing is generated.
  • Fig. 2 shows a longitudinal section through a section of another linear compressor 1 according to the invention, wherein the linkage 5 is tubular and at a first portion 8 and at a second portion 9 as lying on block biased springs are configured.
  • the two sections 8, 9 allow bending of the linkage 5 in these areas and thus allow a particularly low transverse rigidity.
  • Fig. 3 shows a perspective view of a linear compressor 1 according to the invention with a drive 6, a piston housing 2, wherein a compressor piston (not shown) by the drive 6 by means of a linkage 5 is driven.
  • the compression pressure is 9 to 10 bar.
  • the mass of the compressor piston 6 is 50g.
  • the working frequency is slightly below 50Hz.
  • the stroke of the compressor piston is about 20 mm and the volume that is compressed is 1 to 9 cm 3 .
  • FIG. 4 shows the refrigerator 13 according to the invention with the linear compressor 1 according to the invention and a product 15 which is cooled. Due to the high reliability and the high efficiency of the linear compressor 1 according to the invention a particularly reliable, fast and energy-efficient cooling of the goods 15 is possible.
  • the invention relates to a linear compressor 1 comprising a piston housing 2 and a compressor piston 4 reciprocable therein along an axis 3, wherein the compressor piston 4 is connected via a linkage 5 to a drive 6 for the reciprocating movement, wherein the linkage 5 comprises a prestressed spring 7, as well as a refrigerating machine and a method for cooling or freezing a product comprising the linear compressor 1 according to the invention.
  • the invention is characterized in that due to the design of the preloaded spring, a particularly good ratio of axial to transverse stiffness of the coupling between the drive 6 and compressor piston 4 can be achieved and thus different linear compressor with different power levels are covered with one and the same component can. This reduces not only the variance of the piston rod but also the number of fasteners required piston and drive side.

Landscapes

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

Abstract

L'invention concerne un compresseur linéaire (1) qui comprend un boîtier de piston (2) dans lequel un piston de compresseur (4) peut se déplacer en va-et-vient le long d'un axe (3). Le piston (4) du compresseur est relié par une tige (5) à un entraînement (6) de déplacement en va-et-vient et la tige (5) présente un ressort précontraint (7). L'invention concerne également une machine frigorifique et un procédé de refroidissement ou de congélation de produits (15) qui comprennent un compresseur linéaire (1) selon l'invention. L'invention est caractérisée en ce que grâce au mode de construction du ressort précontraint, on peut obtenir un très bon rapport entre la rigidité axiale et la rigidité transversale de l'accouplement entre l'entraînement (6) et le piston (4) du compresseur et que l'on peut ainsi utiliser un seul et même composant pour différents compresseurs linéaires qui présentent différents niveaux de puissance. Non seulement cela réduit le nombre de variantes de la tige de piston mais également le nombre des pièces de fixation du piston et de l'entraînement.
PCT/EP2007/050484 2006-02-28 2007-01-18 Compresseur lineaire a tige de piston precontrainte elastiquement, et machine frigorifique WO2007098991A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/223,898 US20100162733A1 (en) 2006-02-28 2007-01-18 Linear Compressor With Preloaded Spring Piston Rod, and Refrigerating Machine
EP07703979A EP1991780A1 (fr) 2006-02-28 2007-01-18 Compresseur lineaire a tige de piston precontrainte elastiquement, et machine frigorifique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006009270.8 2006-02-28
DE102006009270A DE102006009270A1 (de) 2006-02-28 2006-02-28 Linearverdichter mit vorgespannter Federkolbenstange sowie Kältemaschine

Publications (1)

Publication Number Publication Date
WO2007098991A1 true WO2007098991A1 (fr) 2007-09-07

Family

ID=37890194

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/050484 WO2007098991A1 (fr) 2006-02-28 2007-01-18 Compresseur lineaire a tige de piston precontrainte elastiquement, et machine frigorifique

Country Status (6)

Country Link
US (1) US20100162733A1 (fr)
EP (1) EP1991780A1 (fr)
CN (1) CN101389864A (fr)
DE (1) DE102006009270A1 (fr)
RU (1) RU2451209C2 (fr)
WO (1) WO2007098991A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105626482A (zh) * 2016-03-01 2016-06-01 珠海格力节能环保制冷技术研究中心有限公司 活塞组件及具有其的压缩机

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT12038U1 (de) 2009-12-14 2011-09-15 Acc Austria Gmbh Kältemittelverdichter mit linearantrieb
ITCO20120027A1 (it) 2012-05-16 2013-11-17 Nuovo Pignone Srl Attuatore elettromagnetico e dispositivo di conservazione d¿inerzia per un compressore alternativo
ITCO20120028A1 (it) 2012-05-16 2013-11-17 Nuovo Pignone Srl Attuatore elettromagnetico per un compressore alternativo
CN105464943A (zh) * 2016-01-22 2016-04-06 珠海格力节能环保制冷技术研究中心有限公司 一种活塞驱动杆、活塞缸组件和压缩机
CN108071573A (zh) * 2016-11-17 2018-05-25 天津市千顷田机械科技有限公司 新式压缩机连杆
RU2756420C1 (ru) * 2020-11-17 2021-09-30 Федеральное государственное бюджетное учреждение науки Институт теплофизики им. С.С. Кутателадзе Сибирского отделения Российской академии наук Двусторонний линейный пружинно-поршневой компрессор

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB823109A (en) 1956-04-13 1959-11-04 Chausson Usines Sa Improvements in or relating to compressors
US4966533A (en) 1987-07-14 1990-10-30 Kabushiki Kaisha Nagano Keiki Seisakusho Vacuum pump with rotational sliding piston support
US5275542A (en) 1991-04-16 1994-01-04 Sanden Corporation Free piston-type compressor
DE69526217T2 (de) 1994-03-21 2002-11-07 Sunpower Inc Fluidlager mit elastischem gestänge zum zentrieren von hin- und hergehenden körpern
WO2006081642A2 (fr) 2005-02-01 2006-08-10 Whirlpool S.A. Tige d'entrainement destinee au piston d'un compresseur alternatif

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4873913A (en) * 1986-09-12 1989-10-17 Helix Technology Corporation Dry roughing pump having a gas film bearing
BR0201189B1 (pt) * 2002-03-22 2010-06-29 compressor alternativo acionado por motor linear.
KR20030079784A (ko) * 2002-04-04 2003-10-10 마츠시타 덴끼 산교 가부시키가이샤 냉동 사이클 장치와, 그것을 구비하는 공기 조화기,냉장고, 온수 공급기 및 극저온 냉동 장치
US7263856B2 (en) * 2005-05-26 2007-09-04 Lg Electronics Inc. Refrigerator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB823109A (en) 1956-04-13 1959-11-04 Chausson Usines Sa Improvements in or relating to compressors
US4966533A (en) 1987-07-14 1990-10-30 Kabushiki Kaisha Nagano Keiki Seisakusho Vacuum pump with rotational sliding piston support
US5275542A (en) 1991-04-16 1994-01-04 Sanden Corporation Free piston-type compressor
DE69526217T2 (de) 1994-03-21 2002-11-07 Sunpower Inc Fluidlager mit elastischem gestänge zum zentrieren von hin- und hergehenden körpern
WO2006081642A2 (fr) 2005-02-01 2006-08-10 Whirlpool S.A. Tige d'entrainement destinee au piston d'un compresseur alternatif

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105626482A (zh) * 2016-03-01 2016-06-01 珠海格力节能环保制冷技术研究中心有限公司 活塞组件及具有其的压缩机

Also Published As

Publication number Publication date
RU2451209C2 (ru) 2012-05-20
US20100162733A1 (en) 2010-07-01
DE102006009270A1 (de) 2007-08-30
EP1991780A1 (fr) 2008-11-19
RU2008135720A (ru) 2010-04-10
CN101389864A (zh) 2009-03-18

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