EP2265823A2 - Compresseur de réfrigérant - Google Patents

Compresseur de réfrigérant

Info

Publication number
EP2265823A2
EP2265823A2 EP09722339A EP09722339A EP2265823A2 EP 2265823 A2 EP2265823 A2 EP 2265823A2 EP 09722339 A EP09722339 A EP 09722339A EP 09722339 A EP09722339 A EP 09722339A EP 2265823 A2 EP2265823 A2 EP 2265823A2
Authority
EP
European Patent Office
Prior art keywords
valve plate
piston
cylinder housing
cylinder
refrigerant compressor
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
EP09722339A
Other languages
German (de)
English (en)
Other versions
EP2265823B1 (fr
Inventor
Günther ZIPPL
Walter Brabek
Alfred Freiberger
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.)
Secop Austria GmbH
Original Assignee
ACC Austria 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 ACC Austria GmbH filed Critical ACC Austria GmbH
Priority to SI200930106T priority Critical patent/SI2265823T1/sl
Publication of EP2265823A2 publication Critical patent/EP2265823A2/fr
Application granted granted Critical
Publication of EP2265823B1 publication Critical patent/EP2265823B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • 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
    • F04B53/007—Cylinder heads
    • 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
    • F04B53/10—Valves; Arrangement of valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/4927—Cylinder, cylinder head or engine valve sleeve making

Definitions

  • the present invention relates to a refrigerant compressor comprising a refrigerant-compressing piston-cylinder unit comprising a cylinder housing and a piston guided in a piston bore of the cylinder housing, the cylinder housing being closed in an axial direction with a valve plate and a cylinder cover, according to the preamble of claim 1.
  • the refrigeration process with zeotropic gases as such has long been known.
  • a refrigerant is heated by energy intake from the space to be cooled in an evaporator and finally superheated, which leads to evaporation and compressed by a piston-cylinder unit of the refrigerant compressor to a higher pressure level where it emits heat through a capacitor and a throttle , in which a pressure reduction and the cooling of the refrigerant takes place, is transported back into the evaporator.
  • the piston-cylinder unit of the refrigerant compressor which is arranged in a hermetically sealed housing and driven by a drive motor, comprises a cylinder housing and a piston guided in a piston bore of the cylinder housing for compressing the refrigerant, the cylinder housing being closed in an axial direction with a valve plate, on which a cylinder cover or is encompassed by it.
  • screw connections are usually used for fastening the cylinder cover or the valve plate on the cylinder housing screw connections.
  • both the cylinder cover and the valve plate are provided with mostly four holes through which corresponding screw elements can be passed and screwed into threaded bores of the cylinder housing.
  • the "dead space volume" which is understood as meaning a part of the working space of the piston-cylinder unit that does not belong to the displacement volume, reduces the efficiency of generic refrigerant compressors
  • the amount of gas or refrigerant present in the dead space volume is not expelled from the working space of the piston-cylinder unit after completion of a piston stroke and therefore reduces the intake volume of the piston-cylinder unit It is therefore attempted to reduce the dead space volume as much as possible by providing a plurality of specially shaped sealing elements.
  • valve plate mounted on the cylinder housing, whereby the provision of sealing elements in the area of the valve plate can be dispensed with or the number of sealing elements used can be at least greatly reduced.
  • a refrigerant compressor comprising a refrigerant-compressing piston-cylinder unit comprising a cylinder housing and a piston guided in a piston bore of the cylinder housing, which piston bore is closed in an axial direction with a valve plate and a cylinder cover, it is provided according to the invention the valve plate is sunk in its operating position in the piston bore and fixed by means of a material connection to the cylinder housing or in the piston bore, ie by means of a permanent connection in which the components to be joined by molecular forces - ie without the use of additional components - held together become.
  • valve plate is thus secured by means of a liquid at least during its processing or viscous binder on the cylinder housing, a particularly simple and flexible mounting of the valve plate on the cylinder housing can be made possible.
  • the dead space can be limited to a minimum.
  • the selection as to which cohesive connection technology is used for fastening the valve plate, ie whether the valve plate is welded, soldered or glued to the cylinder housing, can be carried out depending on the respective component geometries and the respective desired manufacturing tolerances and tightness requirements.
  • the cohesive connection is a welded connection.
  • the cohesive connection is a solder joint. Even with the use of a solder as a binder between the valve plate and the cylinder housing a high tightness of the valve plate limited piston working space can be ensured, especially since the liquefied solder in an ideal manner in between the valve plate and the cylinder housing or the piston bore existing gaps or Column inserts. Since the areas of the valve plate and the cylinder housing or the piston bore to be soldered together are not heated to their liquidus temperature during the soldering operation, no distortion of the valve plate or the cylinder housing or the piston bore is to be feared.
  • valve plate is fixed according to a third embodiment by means of an adhesive connection to the cylinder housing or in the piston bore, an unchanged surface and microstructure of the remain to be bonded together areas of the valve plate and the cylinder housing and the piston bore. Since the adhesive used as a binder between the valve plate and the cylinder housing or the piston bore is heated only to a temperature which is not relevant for a deformation of the valve plate or the cylinder housing or the piston bore (or the adhesive is applied cold) is a thermal distortion of the valve plate or the cylinder housing or the piston bore during the bonding process excluded.
  • valve plate in the case of a particularly preferred embodiment of the invention, according to which the valve plate is formed integrally with the cylinder cover, can be dispensed with the providence of a separate cylinder cover.
  • a separate cylinder cover which adjoins the valve plate or surrounds it, may furthermore be provided.
  • valve plate fastened to the cylinder housing or the piston bore according to the invention by means of a material-locking connection or by means of a welding, soldering or adhesive connection is that an ideal dimensioning of the dead space of the piston-cylinder unit is now possible.
  • a particularly preferred embodiment of the invention is characterized in that a gap is formed between the circumferential surface of the piston bore and the peripheral surface of the valve plate, in which a provided for forming the cohesive connection binder layer (ie, a weld, a solder layer or an adhesive layer) is receivable.
  • a provided for forming the cohesive connection binder layer ie, a weld, a solder layer or an adhesive layer.
  • the gap in a particularly preferred embodiment of the invention has a in the direction of the peripheral wall of the piston bore tapered course.
  • the wedge-shaped course of the gap results from a bevel provided in the edge region of the valve plate.
  • a binder layer provided for forming the cohesive connection is arranged only in sections along the circumference of the valve plate.
  • a binder layer provided for forming the cohesive connection can be arranged only in sections along the circumference of the valve plate.
  • Claim 11 is directed to a method for attaching a valve plate to a cylinder housing of a refrigerant compressor, wherein the cylinder housing is provided with a piston bore for receiving a piston oscillating therein and wherein between the end face of the piston located at its top dead center and a piston facing the first end face the valve plate is provided a distance from the formation of a dead space volume, that is a not counting a stroke volume of the piston chamber within the cylinder housing.
  • the valve plate is inserted during its assembly in the axial direction in the piston bore, made between the end face of the piston located in its top dead center and the piston facing the first end face of the valve plate a respectively defined distance or a desired dead space volume is and the valve plate is welded in this position on the cylinder housing or soldered or glued. In this way, the dead space volume within the cylinder housing be limited exactly, without the provision of compensating sealing elements is necessary.
  • Fig.l a cylinder head arrangement of a refrigerant compressor according to the prior art in sectional view Figure 2 a refrigerant compressor according to the invention in
  • FIG. 3 is a plan view of the piston-cylinder unit of a refrigerant compressor according to the invention
  • Viewing direction 26 in Figure 2 Figure 4 is a sectional view of the piston-cylinder unit along line A-A in Figure 3
  • FIG. 5 is a plan view of a piston-cylinder unit of a refrigerant compressor according to the invention in alternative
  • FIG. 6 is a sectional view of the piston-cylinder unit taken along line B-B in Figure 5
  • FIG. 7 is a plan view of a piston-cylinder unit of a refrigerant compressor according to the invention in alternative
  • FIG. 2 shows a refrigerant compressor 1 according to the invention, with a refrigerant-compressing piston-cylinder unit 2, which has a cylinder housing 4 and a piston 3 guided in a piston bore 5 of the cylinder housing 3 includes.
  • a stator core 8 provided with a stator winding 18 is provided, within which a rotor 9 is arranged.
  • the offset in rotation rotor 9 drives in a known manner via a crankshaft 10, to which a connecting rod 11 is articulated, the piston 3, so that it along the axis 16 performs a linear forward and backward movement.
  • the piston bore 5 is closed in an axial direction with a valve plate 6.
  • the valve plate 6 has a suction opening 12 and an outlet opening 13, through which the refrigerant is sucked into the working space of the cylinder housing 4 and ejected therefrom.
  • the refrigerant is in this case by means not shown suction or pressure lines to the intake or outlet openings 12, 13 zoomed or discharged.
  • valve plate 6 together with the cylinder cover 7 in a piston-cylinder arrangement according to the prior art, as shown in Fig.l, in a complex manner by means of
  • Screw elements 25 is fixed to the cylinder housing 4, it is according to the invention provided, the valve plate 6 in their respective desired operating position by means of a material connection in the piston bore 5 of the
  • Cylinder housing 4 to be attached.
  • valve plate 6 is fixed in a simple manner by means of a liquid or viscous at least during their processing binder layer 17, ie by means of a weld, a solder layer or an adhesive layer in the piston bore 5 of the cylinder housing 4.
  • valve plate 6 is formed as a cylindrical disc, which in
  • Annular gap covers the entire cross section of the piston bore 5.
  • binder layer 17 instead of a single binder layer 17, it is also possible to apply a plurality of binder layers 17 in succession or side by side, e.g. can the valve plate 6 with the cylinder housing 4 and the piston bore in order to ensure particularly high sealing properties double glued or soldered twice.
  • the cohesive connection between the valve plate 6 and the piston bore 5 of the cylinder housing 4 may also be produced without the use of a binder layer 17 by only the contact surfaces between the valve plate 6 and the piston bore 5 of the cylinder housing 4, for. are thermally heated by a laser or ultrasonic welding process and fused together.
  • the cohesive connection between the valve plate 6 and the piston bore 5 of the cylinder housing 4 is a welded connection 7 shows a top view of the piston-cylinder unit 2 in a viewing direction according to arrow 26, wherein FIG. 8 shows a detailed sectional illustration along line CC in FIG.
  • a gap 22 is formed, in which a binder layer 17, in the present embodiment, a weld 17 is receivable.
  • the edge region 6a of the valve plate 6 is provided in each case with a chamfer 24, so that the gap 22 has a course which tapers in the direction of the circumferential surface 15b of the piston bore 5.
  • the second end face 20 of the valve plate 6 may be in a plane with the end face 23 of the cylinder housing 4 ( Figure 2) or even in the piston bore of the cylinder housing 4 completely sunk ( Figure 6, Figure 8). Also, that the valve plate 6 is only partially sunk in the cylinder housing 4, so that the second end face 20 of the valve plate 6 protrudes beyond the plane of the end face 23 of the cylinder housing 4, is conceivable.
  • the cohesive connection between the valve plate 6 and the cylinder housing 4 or the piston bore 5 is a solder joint (shown in FIGS Figures 3-6).
  • solder joint shown in FIGS Figures 3-6.
  • the binder or solder layer 17 may either be flush with the end faces 19, 20 of the valve plate 6, in particular plan with the piston 3 facing the first end face of the valve plate 6 or curved and depending on the size of the produced dead space volume on the end faces 19, 20 of the valve plate 6 may be formed protruding.
  • the same possibilities also exist in the case of an embodiment of the binder layer as a weld or as an adhesive layer.
  • soldering method for producing a valve plate 6 with the cylinder housing 4 and the piston bore 5 connecting the solder joint all known in the prior art soldering can be used.
  • valve plate 6 is in the cohesive connection between the valve plate 6 and the cylinder housing 4 and the piston bore 5 to an adhesive connection (not shown separately - it applies with regard to the arrangement possibilities of the valve plate 6 and the binder or Adhesive layer 17 in turn analogous to what was said to the welds and solder joints.)
  • valve plate 6 is formed integrally with the cylinder cover.
  • the provision of a separate cylinder cover 7, as can be seen in the state of the art illustration according to FIG. 1, can therefore be dispensed with.
  • the valve plate cylinder cover element does not necessarily have to be plate-shaped, but may have any geometry.
  • valve plate 6 in the manner described according to the invention cohesively in the piston bore 5 of the cylinder housing 4 and continue to provide a separately manufactured cylinder cover 7 which adjoins the valve plate 6 or this surrounds and is secured to the cylinder housing.
  • This can be particularly in the case of special Saug effets- and Pressure line connections to the piston-cylinder unit 2 be expedient.
  • a particularly critical point in the production of generic piston-cylinder units 2 is the limitation of the previously mentioned dead space volume, ie a not counting the stroke volume of the piston 5 space within the cylinder housing 4.
  • always needs to be located between the end face 27 of the top dead center Piston 5 and a piston 5 facing the first end face 19 of the valve plate 6 may be provided a clearly defined distance to form the dead space volume to compensate for operational thermal expansion of the components of the piston-cylinder unit 2 and a striking of the piston 5 on the cylinder cover 7 and to prevent the valve plate 6.
  • valve plate 6 it is therefore proposed as a method for fixing the valve plate 6 on the cylinder housing 4, that the valve plate 6 is inserted in the axial direction 26 in the piston bore 5 (see Figure 2), between the end face 27 of the piston 5 located in its top dead center and the piston 5 facing the first end face 19 of the valve plate 6, a respectively defined distance or a desired dead space volume is made. If this position of the valve plate 6 within the piston bore 5 is reached (see Figure 3), then the Valve plate 6 welded in a manner already described or soldered or glued.
  • the piston 3 during assembly of the valve plate 6 or during the insertion of the valve plate 6 in the piston bore 5 does not need to be real in its top dead center, but that as a reference point for measuring the defined distance, up to that Valve plate 6 is inserted into the piston bore 5, that plane is used, in which the piston end face 27 would be located during the top dead center position of the piston 5.
  • a distance measurement can be done by means of suitable reference points or surfaces of the cylinder housing geometries, e.g. with reference to a cylinder housing end face 23rd
  • the dead space volume of the piston-cylinder unit 2 can be exactly limited.
  • the smallest possible dead space volume brings a higher efficiency and a better specific cooling capacity of the refrigerant compressor 1 with it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

Compresseur de réfrigérant (1) comprenant une unité piston-cylindre (2) qui comprime un réfrigérant et qui comprend un boîtier cylindrique (4) et un piston (3) guidé dans un alésage pour piston (5) du boîtier cylindrique (4), le boîtier cylindrique (4) étant fermé dans une direction axiale par une lame de soupape (6) et un couvercle cylindrique (7). Pour permettre un montage simple et flexible de la lame de soupape (6) sur le boîtier cylindrique (4), il est prévu selon l’invention que la lame de soupape (6) dans sa position de fonctionnement s’abaisse dans l’alésage pour piston (5) du boîtier cylindrique (4) et soit fixée par liaison de matière au boîtier cylindrique (4) ou dans l’alésage pour piston (5).
EP09722339A 2008-03-19 2009-03-19 Compresseur de réfrigérant Not-in-force EP2265823B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200930106T SI2265823T1 (sl) 2008-03-19 2009-03-19 Kompresor hladiva

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0016808U AT10394U1 (de) 2008-03-19 2008-03-19 Kältemittelverdichter
PCT/EP2009/053229 WO2009115565A2 (fr) 2008-03-19 2009-03-19 Compresseur de réfrigérant

Publications (2)

Publication Number Publication Date
EP2265823A2 true EP2265823A2 (fr) 2010-12-29
EP2265823B1 EP2265823B1 (fr) 2011-08-17

Family

ID=40104834

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09722339A Not-in-force EP2265823B1 (fr) 2008-03-19 2009-03-19 Compresseur de réfrigérant

Country Status (6)

Country Link
US (1) US8419388B2 (fr)
EP (1) EP2265823B1 (fr)
CN (1) CN102027237B (fr)
AT (2) AT10394U1 (fr)
SI (1) SI2265823T1 (fr)
WO (1) WO2009115565A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT10394U1 (de) 2008-03-19 2009-02-15 Acc Austria Gmbh Kältemittelverdichter
BRPI1101993A2 (pt) * 2011-04-28 2014-02-11 Whirlpool Sa Arranjo de válvula para compressores herméticos
EP3118293B1 (fr) 2015-07-13 2020-09-09 The Procter and Gamble Company Produit de nettoyage
EP3228864B1 (fr) * 2016-04-08 2018-08-01 J.P. Sauer & Sohn Maschinenbau GmbH Unite de soupape pour un compresseur a piston et compresseur a piston
CN111306034B (zh) * 2019-11-21 2023-12-22 山东青耕电气有限公司 一种改进型液体活塞压缩机
CN116025422B (zh) * 2021-10-26 2025-09-23 莱克电气绿能科技(苏州)有限公司 进风装置和动力系统
CN115091128A (zh) * 2022-06-21 2022-09-23 广州市华钠电器有限公司 一种电发热盘的制造方法及其设备

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Publication number Priority date Publication date Assignee Title
US3865345A (en) * 1973-06-04 1975-02-11 Carrier Corp Valve plate for reciprocating compressor
DE4022447C2 (de) * 1990-07-14 1994-02-03 Hemscheidt Maschf Hermann Verfahren zum Herstellen einer Kolbenzylinderanordnung sowie Kolbenzylinderanordnung
DE10323767B4 (de) * 2003-05-22 2007-11-08 Danfoss Compressors Gmbh Kolbenverdichter, insbesondere hermetischer Kältemittelverdichter
DE10330760B4 (de) 2003-07-07 2005-06-02 Danfoss Compressors Gmbh Kolbenverdichter, insbesondere hermetischer Kältemittelverdichter
DE10342422B4 (de) * 2003-09-13 2009-05-07 Danfoss A/S Tauchkolbenverdichter für Kältemittel
DE102004047159B4 (de) * 2004-09-29 2006-09-07 Danfoss Compressors Gmbh Kolbenverdichter, insbesondere hermetischer Kältemittelverdichter
DE102004050844B4 (de) * 2004-10-18 2009-05-07 Danfoss Compressors Gmbh Kolbenverdichter-Zylinderanordnung, insbesondere für hermetisch gekapselte Kältemittelverdichter
JP2007009863A (ja) 2005-07-04 2007-01-18 Matsushita Electric Ind Co Ltd 圧縮機
DE112006001911T5 (de) * 2005-07-21 2008-06-05 Fisher & Paykel Appliances Ltd., East Tamaki Zylinder- und Kopfkonstruktion eines Linearkompressors
AT10394U1 (de) 2008-03-19 2009-02-15 Acc Austria Gmbh Kältemittelverdichter

Non-Patent Citations (1)

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Title
See references of WO2009115565A2 *

Also Published As

Publication number Publication date
US8419388B2 (en) 2013-04-16
CN102027237B (zh) 2013-12-18
WO2009115565A2 (fr) 2009-09-24
US20110103983A1 (en) 2011-05-05
ATE520882T1 (de) 2011-09-15
SI2265823T1 (sl) 2011-12-30
CN102027237A (zh) 2011-04-20
EP2265823B1 (fr) 2011-08-17
AT10394U1 (de) 2009-02-15
WO2009115565A3 (fr) 2009-11-19

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