EP3418568A1 - Piston de l'unité d'entraînement d'un compresseur frigorifique - Google Patents

Piston de l'unité d'entraînement d'un compresseur frigorifique Download PDF

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Publication number
EP3418568A1
EP3418568A1 EP17176601.7A EP17176601A EP3418568A1 EP 3418568 A1 EP3418568 A1 EP 3418568A1 EP 17176601 A EP17176601 A EP 17176601A EP 3418568 A1 EP3418568 A1 EP 3418568A1
Authority
EP
European Patent Office
Prior art keywords
piston
ring
groove
base body
peripheral surface
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.)
Withdrawn
Application number
EP17176601.7A
Other languages
German (de)
English (en)
Inventor
Robert Ablinger
Peter SCHÖLLAUF
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 GmbH
Original Assignee
Nidec Global Appliance Germany 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 Nidec Global Appliance Germany GmbH filed Critical Nidec Global Appliance Germany GmbH
Priority to EP17176601.7A priority Critical patent/EP3418568A1/fr
Publication of EP3418568A1 publication Critical patent/EP3418568A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • F04B39/04—Measures to avoid lubricant contaminating the pumped fluid
    • F04B39/041—Measures to avoid lubricant contaminating the pumped fluid sealing for a reciprocating rod
    • F04B39/042—Measures to avoid lubricant contaminating the pumped fluid sealing for a reciprocating rod sealing being provided on the piston
    • 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
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/12—Polyetheretherketones, e.g. PEEK
    • 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
    • F05C2251/00—Material properties
    • F05C2251/04—Thermal properties
    • F05C2251/042—Expansivity
    • 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
    • F05C2251/00—Material properties
    • F05C2251/04—Thermal properties
    • F05C2251/042—Expansivity
    • F05C2251/046—Expansivity dissimilar

Definitions

  • the present invention relates to a piston for the drive unit of a refrigerant compressor, the piston comprising a cylindrical base body and a ring made of plastic, wherein the base body has at least one circumferential groove in which the ring is held.
  • the mating clearance between piston and cylinder should on the one hand be as large as possible in order to reduce the friction, but on the other hand be as small as possible, so that the leakage losses of the refrigerant are low.
  • the shape of the piston can be made by grinding only with considerable additional effort.
  • the ring does not project beyond the piston in the radial direction at room temperature of the piston.
  • the peripheral surface of the piston with ring is consequently a straight line.
  • the base body alone forms the piston and the ring does not protrude in the radial direction beyond the groove of the base body.
  • a third variant of the invention provides at least one groove, which reduces both the end face of the cylindrical base body and the adjoining peripheral surface of the base body.
  • a groove or a ring is produced at the edge between the front and peripheral surface of the base body.
  • the piston is generally designed as a linear piston, so it moves exactly along a straight line, wherein the rotational movement of the electric motor of the drive unit is converted into a linear motion with a connecting rod.
  • the invention also relates to a refrigerant compressor comprising, in particular hermetically dense, housing and disposed therein a drive unit with piston according to the invention.
  • the refrigerant compressor may be used, for example, for cooling the interior of a refrigerator or freezer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
EP17176601.7A 2017-06-19 2017-06-19 Piston de l'unité d'entraînement d'un compresseur frigorifique Withdrawn EP3418568A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17176601.7A EP3418568A1 (fr) 2017-06-19 2017-06-19 Piston de l'unité d'entraînement d'un compresseur frigorifique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17176601.7A EP3418568A1 (fr) 2017-06-19 2017-06-19 Piston de l'unité d'entraînement d'un compresseur frigorifique

Publications (1)

Publication Number Publication Date
EP3418568A1 true EP3418568A1 (fr) 2018-12-26

Family

ID=59077946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17176601.7A Withdrawn EP3418568A1 (fr) 2017-06-19 2017-06-19 Piston de l'unité d'entraînement d'un compresseur frigorifique

Country Status (1)

Country Link
EP (1) EP3418568A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021114141B3 (de) 2021-06-01 2022-10-27 Schaeffler Technologies AG & Co. KG Zylinderanordnung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5681280A (en) * 1979-12-03 1981-07-03 Toyoda Autom Loom Works Ltd Compressor
US4697992A (en) 1985-02-20 1987-10-06 Sanden Corporation Piston ring for a piston in a refrigerant compressor
EP0400334A2 (fr) * 1989-04-28 1990-12-05 Iwata Air Compressor Mfg. Co.,Ltd. Appareil compresseur et d'expansion à mouvement alternatif, sans huile
JP2000045945A (ja) * 1998-07-31 2000-02-15 Tokico Ltd 往復動圧縮機
WO2005106250A1 (fr) * 2004-04-28 2005-11-10 Acc Austria Gmbh Compresseur frigorifique
CN201891576U (zh) * 2010-11-23 2011-07-06 中山富茂密封科技有限公司 一种伸缩弹性活塞油封

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5681280A (en) * 1979-12-03 1981-07-03 Toyoda Autom Loom Works Ltd Compressor
US4697992A (en) 1985-02-20 1987-10-06 Sanden Corporation Piston ring for a piston in a refrigerant compressor
EP0400334A2 (fr) * 1989-04-28 1990-12-05 Iwata Air Compressor Mfg. Co.,Ltd. Appareil compresseur et d'expansion à mouvement alternatif, sans huile
JP2000045945A (ja) * 1998-07-31 2000-02-15 Tokico Ltd 往復動圧縮機
WO2005106250A1 (fr) * 2004-04-28 2005-11-10 Acc Austria Gmbh Compresseur frigorifique
CN201891576U (zh) * 2010-11-23 2011-07-06 中山富茂密封科技有限公司 一种伸缩弹性活塞油封

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021114141B3 (de) 2021-06-01 2022-10-27 Schaeffler Technologies AG & Co. KG Zylinderanordnung

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