US20230015085A1 - Hermetically encapsulated refrigerant compressor - Google Patents

Hermetically encapsulated refrigerant compressor Download PDF

Info

Publication number
US20230015085A1
US20230015085A1 US17/757,608 US202017757608A US2023015085A1 US 20230015085 A1 US20230015085 A1 US 20230015085A1 US 202017757608 A US202017757608 A US 202017757608A US 2023015085 A1 US2023015085 A1 US 2023015085A1
Authority
US
United States
Prior art keywords
housing
cover
piston pump
refrigerant compressor
bottom part
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
US17/757,608
Other languages
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
Assigned to ANHUI MEIZHI COMPRESSOR CO., LTD. reassignment ANHUI MEIZHI COMPRESSOR CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PLATZER, Ulf
Publication of US20230015085A1 publication Critical patent/US20230015085A1/en
Pending legal-status Critical Current

Links

Images

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 generally relates to hermetically encapsulated refrigerant compressors of the reciprocating compressor type, and in particular to such compressors for refrigerating machines used in household appliances such as refrigerators, freezers and small air conditioners.
  • the invention relates to a method of assembling such a refrigerant compressor.
  • an electrical connection piece is generally arranged on the bottom part of the compressor housing, which serves the purpose of electrically connecting the piston pump to a control unit. Due to the requirement to keep the compressor housing as small as possible, manufacturers of refrigerant compressors of the above type move the connection piece further and further towards the base on which the refrigerant compressor is placed. This can lead to major problems in terms of installation technology, since the aforementioned electrical connection is generally implemented by a standardized electrical plug-in connection, the dimension of which is specified by standards and therefore is not variable.
  • connection piece which is usually designed as a plug of a plug-in connection
  • the plug-in connection lies in an undesirable manner on the base on which the refrigerant compressor is to be placed and fastened when the refrigerant compressor is being installed or that, in the event that the electrical connection is made only after the refrigerant compressor has been installed, the socket can be connected to the plug only with difficulty because of the small installation space that is available.
  • this may cause damage to the plug-in connection and/or the electrical connection between the piston pump and the control unit, especially if a cable line leading away from/to the plug-in connection is sandwiched between the plug-in connection and the base.
  • the control unit is arranged essentially at the same level as the bottom part of the compressor housing.
  • the above-indicated arrangement of the refrigerant compressor and the control unit reduces the installation space, which may hamper and prolong the assembly and installation of the refrigerant compressor in a refrigerator, for example.
  • DE 37 13 893 A1 discloses a hermetic enclosure for refrigerant compressors which comprises a bottom part and a top part, which are identical drawn parts each having one shoulder. In the shoulder of the top part, a through opening is formed in which electrical connections are arranged. Through holes with connections associated with refrigeration technology are formed in the shoulder of the bottom part. The arrangement of the connections associated with refrigeration technology in the bottom part indicates that, during assembly, the compressor block is inserted into the bottom part and connected to the connections associated with refrigeration technology. Furthermore, it is noted that the compressor block is conventionally suspended resiliently in the bottom part.
  • DE 24 13 036 discloses a hermetically sealed capsule composed of two horizontally divided capsule halves. A current feedthrough is arranged in the axis of the upper half of the capsule.
  • a motor-compressor unit is elastically suspended on supports on the lower half of the capsule. The motor-compressor unit is used during the assembly with the supports and the helical springs in the lower half of the capsule. It is evident from the figures that the motor-compressor unit is connected to the upper half of the capsule only via a cable.
  • connection piece is attached in the bottom part of the compressor housing also because the fully assembled, electrically operated piston pumps are inserted into the bottom part of the two-part compressor housing in a first step of the production process, and the electrical connection is thereby established via the connection piece with the electrical control unit. Subsequently, the cover of the compressor housing is attached and tightly welded to the bottom part of the housing.
  • One way to avoid the disadvantages described above is to use an oblique dividing plane between the cover and the bottom part of the two-part housing. In this way, sufficient space can be created on the cover for attaching the connection piece. However, such a dividing plane leads to other disadvantages.
  • the production of an oblique dividing plane is associated with greater effort in terms of production technology in comparison to the production of a horizontal dividing line, since other production machines have to be used or, respectively, existing ones have to be converted and/or reprogrammed.
  • problems arise with respect to the arrangement of the components of the refrigerant compressor, in particular the piston pump.
  • the connection piece can be integrated into the cover of the housing compressor due to the oblique dividing line, there is a risk of the connection piece colliding with the electric piston pump. As a result, the housing parts are no longer hermetically sealable with one another.
  • a hermetically encapsulated refrigerant compressor of the reciprocating compressor type comprising a housing having a bottom part and a cover, the cover being connectable to the bottom part, an electrical connection piece penetrating the housing and a piston pump which is arranged in the housing and can be electrically connected to a control unit via the connection piece.
  • 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, when the housing is open, the piston pump can be inserted into the cover of the housing and is connectable to the electrical connection piece.
  • the invention achieves the given object by means of a method of assembling a hermetically encapsulated refrigerant compressor having the above-described features, the method comprising the following steps:
  • a housing having a bottom part and a cover and comprising a through opening penetrating the cover;
  • 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 benefit as smaller refrigerant compressors are easier to transport and more versatile. In addition, due to the low overall height of the refrigerant compressor, housing material can be saved, as a result of which the production costs of the refrigerant compressor are reduced.
  • a further advantage of the invention is that a substantially spherical design of the housing is feasible. Such a design can bring about 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 downsized with the compression capacity remaining the same.
  • cables which interconnect the reciprocating compressor and electrical add-on parts can be connected to the cover of the housing.
  • the electrical control unit can also be arranged in areas outside of the compressor housing which allow for simplified and easier installation of the compressor.
  • the cable connections can be kept short, whereby the cables are prevented from lying on the base and the resulting risks of damage to the cables and short circuits are avoided.
  • the housing has a substantially horizontal dividing plane between the bottom part and the cover of the housing so that the cover and the bottom part can be easily welded along this dividing plane.
  • the assembly and the hermetic sealing as a result of the cover and the bottom part being welded with a horizontal dividing plane involve less effort and can therefore be implemented faster than in the case of a compressor with an oblique dividing plane.
  • the piston pump according to the invention can be inserted into the cover in an upside-down manner by means of a positioning aid.
  • the piston pump can be easily wired to the electrical connection piece arranged in the cover, for which only short connecting cables are required.
  • the at least one positioning aid is designed as a support for the piston pump, the support comprising geometric formations, such as projections or ribs, on the inside of the cover.
  • the positioning aid has geometric formations, such as projections or ribs, on the housing of the piston pump, which formations serve as supports on the inside of the cover when the piston pump is being inserted into the cover of the housing.
  • the positioning aid comprises at least one element that can be inserted into the cover and 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 before the housing is closed, after the piston pump has been positioned.
  • the electrical connection piece is an electrical plug with a steel base body, which comprises metallic conductor pins held by an electrically insulating material, preferably glass, with the electrical connection piece being inserted into the through opening of the cover and being sealingly connected to the circumference of the cover's through opening.
  • the housing is made of a corrosion-resistant material, preferably metal or metal alloys, with the housing parts preferably being deep-drawn parts.
  • the cover of the housing has connecting pipes, in particular a suction pipe, a pressure pipe and a maintenance pipe.
  • the arrangement of the connecting pipes on the cover of the housing allows the refrigerant compressor to be installed at its place of use in a space-saving manner, whereby the refrigerating machines can be designed on a smaller and more compact scale.
  • the bottom part of the housing has adjustable feet or fastening elements on its outside.
  • the above-described method according to the invention of assembling a hermetically encapsulated refrigerant compressor provides the significant advantage that the electrical connection piece can be arranged in the cover of the housing, in contrast to refrigerant compressors according to the prior art, and the refrigerant compressor can nevertheless be assembled easily and in just a few steps, which is of great value for mass production.
  • the piston pump which is arranged in the cover, can easily be wired to the electrical connection piece.
  • the external components in particular an electrical control unit, can be quickly and easily connected to the refrigerant compressor by a skilled person.
  • control unit can be arranged, for example, on the outer area of the cover or in the vicinity thereof, in such a way that the assembly and installation of the refrigerant compressor can be performed faster. In doing so, cable connections can be kept very short and kinks in the cables can be avoided, since the cables are supplied to the electrical connection piece in the area of the cover.
  • FIG. 1 is a perspective view of a hermetically encapsulated refrigerant compressor comprising a connection piece according to the present invention.
  • FIG. 2 is a sectional view of the hermetically encapsulated refrigerant compressor of FIG. 1 .
  • the invention provides a hermetically encapsulated refrigerant compressor 100 comprising a housing 10 having a bottom part 11 and a cover 12 .
  • the bottom part 11 and the cover 12 are each formed in the shape of a bowl.
  • the cover 12 has a through opening 12 a into which an electrical connection piece 30 is inserted in a hermetically sealing manner.
  • the electrical connection piece 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 steel base bodies on its outside and its inside, the electrical plugs 31 comprising 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 bottom part 11 has a substantially horizontal, weldable dividing plane 50 with the cover 12 of the housing 10 . 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 has fastening elements 13 , 14 on the bottom part 11 of the housing 10 so that it can be securely fixed to a base, for example, by means of a screw connection.
  • the steps of assembling the hermetically encapsulated refrigerant compressor 100 are illustrated below. Those steps comprise:
  • a housing 10 having a bottom part 11 and a cover 12 and comprising a through opening 12 a penetrating the cover 12 ;
  • connection piece 30 The electrical connection of the piston pump 40 to the connection piece 30 is effected via cable lines, not shown, which are connected to those parts of the metal pins 32 which face the interior of the housing 10 .
  • cable lines not shown
  • a control unit for the piston pump 40 can be electrically connected to those parts of the metal pins 32 which protrude from the housing 10 .
  • the piston pump 40 is inserted into the cover 12 of the housing 10 from above in an upside-down manner in such a way that the piston pump 40 will lie on defined positioning aids 12 b , 12 c of the cover 12 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
US17/757,608 2019-12-19 2020-11-12 Hermetically encapsulated refrigerant compressor Pending US20230015085A1 (en)

Applications Claiming Priority (3)

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

Publications (1)

Publication Number Publication Date
US20230015085A1 true US20230015085A1 (en) 2023-01-19

Family

ID=76476457

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/757,608 Pending US20230015085A1 (en) 2019-12-19 2020-11-12 Hermetically encapsulated refrigerant compressor

Country Status (5)

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

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
CN114829773A (zh) 2022-07-29
WO2021119682A1 (de) 2021-06-24
AT17173U1 (de) 2021-08-15
EP4077941A1 (de) 2022-10-26
AT17173U8 (de) 2021-09-15

Similar Documents

Publication Publication Date Title
KR101589555B1 (ko) 전동 압축기 및 그의 제조 방법
CA2383905A1 (en) Refrigerator cabinet refrigerant tube assembly
CN106953473B (zh) 有内置控制装置的壳体和结合该壳体的电压缩机
US7197892B2 (en) Encapsulated electrically driven compressor
US20040118146A1 (en) Horizontal compressor end cap
AU2005234736B2 (en) Terminal cluster block
US20180091016A1 (en) Electric compressor
US20230015085A1 (en) Hermetically encapsulated refrigerant compressor
JP2013157320A (ja) 並列式電気的接続を有するコネクタブロック
US20050054234A1 (en) Electric connector for the motor of a hermetic compressor and its manufacturing process
CZ2014781A3 (cs) Utěsněný kompresor
US11486393B2 (en) Scroll compressor for vehicle
US6375497B1 (en) Recessed hermetic terminal assembly
EP3430262B1 (en) Hermetic terminal socket and terminal plug for use in a hermetic compressor
US20050031471A1 (en) Method of draining and recharging hermetic compressor oil
CN104104854A (zh) 带制冷器的ccd相机
EP3467308A1 (en) Hermetic type compressor
CN112467450A (zh) 气密端子
JPH11303744A (ja) 密閉型圧縮機
US9051835B2 (en) Offset electrical terminal box with angled studs
KR20240025701A (ko) 기밀 단자
US10378548B2 (en) Submersible pump motor housing for improving the serviceability of submersible pumps
CN211144754U (zh) 压缩机壳体和具有其的压缩机
JPH056184U (ja) 圧縮機
WO2000007749A1 (en) Method for joining metal tubes to the casing of refrigeration compressors

Legal Events

Date Code Title Description
AS Assignment

Owner name: ANHUI MEIZHI COMPRESSOR CO., LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PLATZER, ULF;REEL/FRAME:060237/0068

Effective date: 20220523

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED