EP4077941A1 - Compresseur de réfrigérant encapsulé hermétiquement - Google Patents

Compresseur de réfrigérant encapsulé hermétiquement

Info

Publication number
EP4077941A1
EP4077941A1 EP20811513.9A EP20811513A EP4077941A1 EP 4077941 A1 EP4077941 A1 EP 4077941A1 EP 20811513 A EP20811513 A EP 20811513A EP 4077941 A1 EP4077941 A1 EP 4077941A1
Authority
EP
European Patent Office
Prior art keywords
housing
cover
piston pump
refrigerant compressor
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.)
Pending
Application number
EP20811513.9A
Other languages
German (de)
English (en)
Inventor
Ulf PLATZER
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.)
Anhui Meizhi Compressor Co Ltd
Original Assignee
Anhui Meizhi Compressor Co Ltd
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 Anhui Meizhi Compressor Co Ltd filed Critical Anhui Meizhi Compressor Co Ltd
Publication of EP4077941A1 publication Critical patent/EP4077941A1/fr
Pending 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
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/123—Fluid connections
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/127—Mounting of a cylinder block in a casing
    • 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
    • F04B39/14—Provisions for readily assembling or disassembling

Definitions

  • the present invention relates generally to hermetically sealed refrigerant compressors of the reciprocating compressor type, and more particularly to such compressors for refrigerating machines used in household appliances such as refrigerators,
  • Freezers and small air conditioners can be used.
  • the invention also relates to a method for assembling such a refrigerant compressor.
  • connection piece which is usually designed as a plug of a plug-in connection
  • this can lead to the plug-in connection in an undesirable manner when installing the refrigerant compressor on the substrate on which the refrigerant compressor is placed and is to be attached, rests or, in the event that the electrical connection is only made after the installation of the refrigerant compressor, the socket is difficult to connect to the plug due to the small installation space available.
  • this can lead to damage to the plug connection and / or the electrical connection between the piston pump and the control unit, especially if a cable leading from / to the plug connection is jammed between the plug connection and the ground .
  • the control unit is arranged essentially at the same level as the lower part of the compressor housing.
  • this results in further technical installation disadvantages since the installation space for the refrigerant compressor is often designed to be very small and cramped.
  • DE 37 13 893 A1 discloses a hermetic casing for refrigerant compressors, which comprises a lower part and an upper part, which are the same drawn parts, each with a shoulder.
  • a through opening in which electrical connections are arranged is formed in the shoulder of the upper part.
  • Through bores with refrigeration connections are formed in the shoulder of the lower part.
  • the arrangement of the refrigeration connections in the lower part indicates that the compressor block is inserted into the lower part during assembly and is connected to the refrigeration connections. It is also mentioned that conventionally the compressor block is resiliently suspended in the lower part.
  • DE 24 13 036 discloses a hermetically sealed capsule which is composed of two horizontally divided capsule halves. A current feed-through is arranged in the axis of the upper half of the capsule. A motor-compressor unit is elastically suspended from the lower half of the capsule on supports with helical springs. The motor / compressor unit is inserted in the lower half of the capsule when assembling with the supports and coil springs. The figures show that the motor / compressor unit is only connected to the upper half of the capsule via a cable.
  • connection piece is also attached in the lower part of the compressor housing because the fully assembled, electrically operated piston pumps are inserted into the lower part of the two-part compressor housing in a first step of the production process and the electrical connection is established via the connection piece with the electrical control unit . Then the cover of the compressor housing is put on and sealed with the lower part of the housing welded.
  • One way of avoiding the disadvantages described above is to use an inclined parting plane between the cover and the lower part of the two-part housing. This allows sufficient space to be created on the cover for attaching the connector. However, such a partition plane leads to other disadvantages.
  • the production of an inclined dividing plane is associated with greater effort from a production-technical point of view compared to the production of a horizontal dividing line, since other production machines must be used or existing ones converted and / or reprogrammed.
  • problems arise with the arrangement of the components of the refrigerant compressor, in particular the piston pump. Because of the inclined dividing line, the connection piece can indeed be integrated into the cover of the housing compressor, but there is a risk that the connection piece will collide with the electric piston pump. Because of this, the housing parts can no longer be hermetically sealed with one another.
  • the present invention achieves the set objects by providing a hermetically encapsulated refrigerant compressor of the reciprocating compressor type with a housing having a lower part and a cover, the cover being connectable to the lower part, an electrical connector penetrating the housing and an electrical connector arranged in the housing and having a Control unit electrically connectable piston pump via the connector.
  • the cover of the housing has a through opening in which the electrical connection piece is arranged.
  • the housing is configured in such a way that the piston pump can be inserted into the cover of the housing when the housing is open and can be connected to the electrical connector.
  • the invention also solves the problem posed by a method for assembling a hermetically encapsulated refrigerant compressor with the features described above, the method comprising the following steps:
  • the advantage of a piston pump that can be inserted into the cover of the housing is that very low overall heights can be achieved. This provides an important economic advantage as smaller refrigerant compressors are easier to transport and more versatile. In addition, housing material can be saved due to the low overall height of the refrigerant compressor, as a result of which the production costs of the refrigerant compressor are reduced.
  • Another advantage of the invention is that a substantially spherical construction of the housing can be realized. Such a structure can ensure an improvement in the structural mechanical properties of the compressor or the compressor can thereby be designed according to structural mechanical criteria. In addition, this design of the refrigerant compressor allows the housing to be reduced in size while maintaining the same compression rate.
  • cables which connect the reciprocating compressor and electrical add-on parts in particular a control unit, can be connected to the cover of the housing.
  • the electrical control unit can thus also be arranged in areas outside the compressor housing, which allow a simplified and easier installation of the compressor.
  • the cable connections can be kept short, which prevents the cables from resting on the ground and the resulting risk of damage to the cables and short circuits.
  • the housing has an essentially horizontal dividing plane between the lower part and the cover of the housing, so that the cover and the lower part can easily be welded along this dividing plane.
  • the assembly and the hermetic sealing by welding the cover and the lower part with a horizontal dividing plane is associated with less effort and can therefore be carried out more quickly than with a compressor with an inclined dividing plane.
  • the piston pump according to the invention can be inserted upside down in the cover by means of a positioning aid.
  • a positioning aid is designed as a support for the piston pump, which comprises geometric shapes, such as projections or ribs, on the inside of the cover.
  • the positioning aid has geometrical formations, such as projections or ribs, on the housing of the piston pump, which serve as supports on the inside of the cover when the piston pump is inserted into the cover of the housing.
  • the positioning aid comprises at least one element that can be inserted into the cover and that serves as a support for the piston pump.
  • the insert element can be configured in such a way that it is removed from the cover again after the piston pump has been positioned, before the housing is closed.
  • the electrical connector is an electrical connector with a steel base body which has metallic conductor pins held by an electrically insulating material, preferably glass, the electrical connector being inserted into the through opening of the cover and sealing with the circumference the through opening of the lid is connected.
  • an electrically insulating material preferably glass
  • the housing is formed from a corrosion-resistant material, preferably from metal or metal alloys, the housing parts preferably being deep-drawn parts. In this way, complex shapes can be created without great technical effort, whereby various further processing steps can be reduced or simplified and production costs lowered.
  • the cover of the housing has connecting pipes, in particular a suction pipe, a pressure pipe and a maintenance pipe.
  • the lower part of the housing has adjustable feet or fastening elements on its outside.
  • the electrical connector can be arranged in the cover of the housing and the refrigerant compressor is still simple and can be assembled in a few steps, which is of great value for mass production.
  • the piston pump, arranged in the cover can be easily wired to the electrical connector.
  • the external components in particular an electrical control unit, can be connected to the refrigerant compressor easily and quickly by a person skilled in the art.
  • the control unit can be arranged, for example on the outside of the cover or in the vicinity thereof, so that the installation and installation of the refrigerant compressor can be carried out more quickly. Cable connections can be kept very short and kinks in the cables can be avoided, since the cables are fed to the electrical connector in the area of the cover.
  • the present invention can significantly reduce the time required for the production, installation and connection of the electrical connections of the refrigerant compressor and save costs in the production of such refrigerant compressors.
  • FIG. 1 is a perspective view of a hermetically sealed refrigerant compressor with a fitting in accordance with the present invention.
  • FIG. 2 is a sectional view of the hermetically sealed refrigerant compressor of FIG. 1.
  • the invention provides a hermetically encapsulated refrigerant compressor 100 with a housing 10 having a lower part 11 and a cover 12.
  • the lower part 11 and the cover 12 are each formed in the shape of a bowl.
  • the cover 12 has a through opening 12a into which an electrical connection piece 30 is inserted in a hermetically sealing manner.
  • the electrical connector 30 can be connected to a control unit, which is not shown in the figures.
  • a piston pump 40 which can be electrically connected to the control unit via the electrical connection piece 30 is arranged in the interior of the housing 10.
  • the connection piece 30 comprises electrical plugs 31 with a steel base body, the electrical plugs 31 having metallic conductor pins 32 held by an electrically insulating material, in particular glass.
  • the electrical connection piece can be a conventional component.
  • the housing 10 of the refrigerant compressor 100 is formed from a die-cast metal or a metal alloy. As can be seen in the figures, the lower part 11 with the cover 12 of the housing 10 has an essentially horizontal, weldable parting plane 50 on. Furthermore, the cover 12 of the housing 10 contains connecting pipes 20, 21, 22, in particular a suction pipe 20, a pressure pipe 21 and a maintenance pipe 22.
  • the refrigerant compressor 100 In order to be able to securely fix the refrigerant compressor 100 on a substrate, for example by means of a screw connection, it has fastening elements 13, 14 on the lower part 11 of the housing 10.
  • the steps of assembling the hermetically sealed refrigerant compressor 100 are illustrated below. These steps include the provision of a housing 10 having a lower part 11 and a cover 12 with a through opening 12a passing through the cover 12; the insertion of an electrical connector 30 in the through opening 12a of the housing 10 in a sealing manner; placing the lid 12 with its open side, i.e., its underside, upwards on a work surface; providing a piston pump 40 and inserting the piston pump 40 upside down, i.e. upside down, into the cover 12 of the housing 10 from above; establishing an electrical connection between the electrical connector 30 and the piston pump 40; arranging the lower part 11 with its open side downwards, i.e. in the inverted position, and placing the lower part 11 arranged in this way onto the cover 12 of the housing 10; the production of a hermetically sealed connection between the lower part 11 and the cover 12 of the housing 10, preferably by means of a welded connection.
  • the electrical connection of the piston pump 40 to the connection piece 30 takes place via cable lines (not shown) which are connected to those parts of the metal pins 32 which face the interior of the housing 10.
  • a control unit for the piston pump 40 can be electrically connected by means of cables to those parts of the metal pins 32 which protrude from the housing 10.
  • the piston pump 40 is inserted upside down into the cover 12 of the housing 10 from above in such a way that the piston pump 40 rests on defined positioning aids 12b, 12c of the cover 12.

Landscapes

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

Abstract

L'invention porte sur un compresseur de réfrigérant encapsulé hermétiquement (100) comprenant: un boîtier (10) ayant une partie inférieure (11) et un couvercle (12), le couvercle (12) pouvant être connecté à la partie inférieure (11); un connecteur électrique (30) qui traverse le boîtier (10); et une pompe à piston (40) qui est située dans le boîtier (10) et qui peut être connectée électriquement à une unité de commande par l'intermédiaire du connecteur (30). Le couvercle (12) du boîtier (10) présente une ouverture de passage (12a) dans laquelle se trouve le connecteur électrique (30). Le boîtier (10) est conçu de telle sorte que, lorsque le boîtier (10) est ouvert, la pompe à piston (40) peut être insérée dans le couvercle (12) du boîtier (10) et connectée au connecteur électrique (30).
EP20811513.9A 2019-12-19 2020-11-12 Compresseur de réfrigérant encapsulé hermétiquement Pending EP4077941A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATGM50236/2019U AT17173U8 (de) 2019-12-19 2019-12-19 Hermetisch gekapselter Kältemittelverdichter
PCT/AT2020/060398 WO2021119682A1 (fr) 2019-12-19 2020-11-12 Compresseur de réfrigérant encapsulé hermétiquement

Publications (1)

Publication Number Publication Date
EP4077941A1 true EP4077941A1 (fr) 2022-10-26

Family

ID=76476457

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20811513.9A Pending EP4077941A1 (fr) 2019-12-19 2020-11-12 Compresseur de réfrigérant encapsulé hermétiquement

Country Status (5)

Country Link
US (1) US20230015085A1 (fr)
EP (1) EP4077941A1 (fr)
CN (1) CN114829773A (fr)
AT (1) AT17173U8 (fr)
WO (1) WO2021119682A1 (fr)

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1085898B (de) * 1957-04-19 1960-07-28 Gen Motors Corp Motorkompressoraggregat fuer Kaeltemaschinen
US3065901A (en) * 1958-01-06 1962-11-27 Trane Co Compressor
DE1189568B (de) * 1961-08-11 1965-03-25 Danfoss Ved Ing M Clausen Kapsel fuer Kleinkaeltemaschinen
US3361339A (en) * 1965-04-02 1968-01-02 Nippon Electric Industry Compa Electric motor and compressor assembly
US3317121A (en) * 1965-10-24 1967-05-02 Carrier Corp Compressor manifold seal
DE2413036A1 (de) * 1974-03-19 1975-10-02 Bosch Siemens Hausgeraete Motorverdichter-aggregat
DE2825129A1 (de) * 1978-06-08 1979-12-13 Bosch Gmbh Robert Motorverdichter
DD248632B1 (de) * 1986-04-25 1988-12-14 Dkk Scharfenstein Veb Hermetische umhuellung fuer kaeltemittelverdichter
US5007807A (en) * 1989-03-08 1991-04-16 Tecumseh Products Company Hermetic compressor having resilient internal mounting
DE102007038432A1 (de) * 2007-08-16 2009-02-19 Danfoss Compressors Gmbh Kältemittelverdichtereinrichtung
JP5520063B2 (ja) * 2010-01-27 2014-06-11 サンデン株式会社 流体機械
US9279425B2 (en) * 2010-07-26 2016-03-08 Bristol Compressors Interntional, Inc. Hermetic electrical feedthrough assembly for a compressor
CN102966515A (zh) * 2012-11-29 2013-03-13 广州万宝集团压缩机有限公司 一种冰箱压缩机及油过滤装置
CN205503391U (zh) * 2016-03-04 2016-08-24 思科普压缩机(天津)有限公司 制冷压缩机

Also Published As

Publication number Publication date
WO2021119682A1 (fr) 2021-06-24
CN114829773A (zh) 2022-07-29
US20230015085A1 (en) 2023-01-19
AT17173U8 (de) 2021-09-15
AT17173U1 (de) 2021-08-15

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