US20230015085A1 - Hermetically encapsulated refrigerant compressor - Google Patents
Hermetically encapsulated refrigerant compressor Download PDFInfo
- 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.)
- Abandoned
Links
- 239000003507 refrigerant Substances 0.000 title claims abstract description 53
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000005755 formation reaction Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 239000012777 electrically insulating material Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 9
- 239000002775 capsule Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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)
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 (fr) | 2019-12-19 | 2020-11-12 | Compresseur de réfrigérant encapsulé hermétiquement |
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 Abandoned US20230015085A1 (en) | 2019-12-19 | 2020-11-12 | Hermetically encapsulated refrigerant compressor |
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)
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 |
-
2019
- 2019-12-19 AT ATGM50236/2019U patent/AT17173U8/de not_active IP Right Cessation
-
2020
- 2020-11-12 US US17/757,608 patent/US20230015085A1/en not_active Abandoned
- 2020-11-12 EP EP20811513.9A patent/EP4077941A1/fr active Pending
- 2020-11-12 CN CN202080087913.5A patent/CN114829773A/zh active Pending
- 2020-11-12 WO PCT/AT2020/060398 patent/WO2021119682A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
EP4077941A1 (fr) | 2022-10-26 |
WO2021119682A1 (fr) | 2021-06-24 |
AT17173U1 (de) | 2021-08-15 |
CN114829773A (zh) | 2022-07-29 |
AT17173U8 (de) | 2021-09-15 |
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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 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |