EP0793068A1 - Dispositif d'alimentation et de protection pour un compresseur hermétique d'une machine frigorifique, dispositif de connexion pour le raccordement de composants électriques et compresseur hermétique pourvu d'un tel dispositif - Google Patents

Dispositif d'alimentation et de protection pour un compresseur hermétique d'une machine frigorifique, dispositif de connexion pour le raccordement de composants électriques et compresseur hermétique pourvu d'un tel dispositif Download PDF

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Publication number
EP0793068A1
EP0793068A1 EP97102972A EP97102972A EP0793068A1 EP 0793068 A1 EP0793068 A1 EP 0793068A1 EP 97102972 A EP97102972 A EP 97102972A EP 97102972 A EP97102972 A EP 97102972A EP 0793068 A1 EP0793068 A1 EP 0793068A1
Authority
EP
European Patent Office
Prior art keywords
insulating
lug
earth
aforesaid
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
EP97102972A
Other languages
German (de)
English (en)
Other versions
EP0793068B1 (fr
Inventor
Giacomo Bison (It)
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.)
Embraco Europe SRL
Original Assignee
Embraco Europe SRL
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 Embraco Europe SRL filed Critical Embraco Europe SRL
Publication of EP0793068A1 publication Critical patent/EP0793068A1/fr
Application granted granted Critical
Publication of EP0793068B1 publication Critical patent/EP0793068B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/002—Structural combination of a time delay electrothermal relay with an electrothermal protective relay, e.g. a start relay
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/077—Compressor control units, e.g. terminal boxes, mounted on the compressor casing wall containing for example starter, protection switches or connector contacts

Definitions

  • the present invention concerns a supply and protection device for a hermetic compressor of a refrigeration machine, including:
  • a refrigeration machine such as a domestic or commercial refrigerator it is known for the electrical supply cable or the cables intended to supply any accessories of the machine such as an internal light for a refrigerator, a fan, a condenser, etc to converge at a terminal board mounted on the casing of the compressor.
  • the terminal board must therefore be provided with a large number of contacts (of screw type and/or of the type known by the commercial name "fast-on"), so that all of the necessary connections may be achieved safely.
  • One of the terminals is intended to connect together the earth wires of the various components of the refrigerator or other machine (a cabinet, light socket, thermostat, compressor, possible fans, etc) and is, in its turn connected to the earth wire of the user's electrical system.
  • a cabinet a cabinet, light socket, thermostat, compressor, possible fans, etc
  • the earth terminal is usually mounted on the terminal board or on the casing of the compressor at a point adjacent the terminal board itself.
  • the tension reliever for the connection cables may be an integral part of the terminal board.
  • the metal casing of the compressor must be electrically connected to the earth wire of the supply line.
  • this aim is achieved by means of a supply and protection device of the aforesaid type, characterised in that the aforesaid metal plate includes a projecting apertured lug situated in a position off-set from the aforesaid support body, and in that the electrical unit includes:
  • the invention also concerns a device for connecting various electrical components and a metal casing to earth, as well as a hermetic compressor for refrigeration machines provided with a device according to the invention.
  • a hermetic compressor for a refrigeration machine includes a metal casing generally indicated 10.
  • the casing 10 includes a lower part 12.
  • a metal plate 14 is welded to a side wall of the lower part 12 of the casing 10.
  • the metal plate 14 is of L-shape.
  • One limb 16 thereof is welded to the side wall of the lower part 12 of the casing 10.
  • Another limb 18 projects from the casing 10 in the form of a bracket.
  • the connector 20 has projecting pins 22 outside the casing 10.
  • An electrical supply and protection unit generally indicated 24 is associated with the connector 20.
  • the unit 24 is protected by a box 25 in a known way.
  • the unit 24 includes an insulating support body 26 of complex shape and formed from a moulded synthetic material.
  • the attachment and support of the body 26 on the casing 10 are obtained by the simple insertion of the pins 22 into the holes 28 and into the female connector parts lying behind them.
  • the insulating support body 26 contains a thermally-activated protection switch 30 of known type which is in thermal contact with the limb 16 of the metal plate 14 ( Figure 4).
  • the same body 26 houses ( Figure 4) a resistor having a positive temperature coefficient (PTC), not shown, which is also well known.
  • PTC positive temperature coefficient
  • the connection means 32 enable an external supply cable to be connected electrically to the windings of the electric motor of the compressor by means of the aforesaid protective switch and PTC resistor and by means of a compressor control thermostat, as well as the connection with any other accessories of a refrigerator or other refrigeration machine.
  • the welded limb 16 of the metal plate 14 includes a projecting apertured lug 34 formed by cutting and bending, the hole through which, in the case shown, is threaded.
  • the lug 34 is bent so as to lie in a general plane perpendicular to the general planes of both of the limbs 16 and 18 of the welded plate 14.
  • an insulating body formed from moulded synthetic material and generally indicated 36 is associated with the apertured lug 34.
  • the insulating body 36 which, as will be seen, is intended for connecting the supply and protection device to earth, is completely separate from the support body 26.
  • the body 36 has a complex shape which can be seen in the drawings and which will not be described in detail.
  • a seat 38 for receiving the apertured lug 34 is formed in the body 36.
  • a shaped blade-like metal element 40 ( Figures 3 and 4) is housed and retained in the insulating body 36.
  • the blade-like element 40 is provided with a screw 42 for a possible alternative earth connection, as provided by the regulations.
  • the element 40 includes an apertured blade-like portion 44 and male connector parts 46 of the type known by the commercial name "fast-on”.
  • the blade-like portion 44 faces an apertured wall 48 of the body 36.
  • the blade-like portion 44 and the wall 48 comprise the opposite sides of the seat 38.
  • the connectors 46 of the metal element 40 constitute earthing terminal portions for various electrical components of a refrigeration machine.
  • the seat 38 is intended to receive the lug 34 when the insulating body 36 has been installed.
  • the limb 18 projects from the casing 10 in the form of a bracket and has a pair of attachment apertures 50 ( Figure 4).
  • the two attachment apertures 50 are elongate in a direction perpendicular to the plane of the aforesaid welded limb 16.
  • Each includes a wide part 52 in the form of a window which is further from the welded limb 16, and a narrow part 54 in the form of a slot closer to the welded limb 16.
  • the insulating earth-connector body 36 includes, in its turn ( Figures 5 and 6), a base wall 56 having a pair of attachment projections 58 corresponding to the attachment apertures 50.
  • Each attachment projection 58 includes a wide foot 60.
  • the size and shape of each foot 60 is such that it is able to pass through the wide part 52 of the associated attachment aperture 50.
  • Each attachment projection 58 also includes a narrow leg 62 the size and shape of which is such that it is able to slide along the narrow part 54 of the associated attachment aperture 52.
  • the distance between the base wall 56 and each foot 60 corresponds to the thickness of the projecting limb 18.
  • the arrangement is such that the aforesaid reception seat and the projecting lug 34 of the plate 14 are aligned when each attachment projection 58 is inserted in the associated attachment aperture 50.
  • each attachment projection 58 has been inserted right through the wide part 52 of the associated attachment aperture 50, and when the base wall 56 of the insulating body 36 is attached to the projecting limb 18, the sliding of the body 36 towards the welded limb 16 in the direction of the arrow F of Figure 4, guided by each leg 62 sliding along the narrow part of the associated attachment aperture 50, brings the seat 38 to couple with the apertured lug 34 which, in the embodiment represented, remains framed ( Figure 3) between the blade-like portion 44 and the wall 48.
  • the holes in the blade-like portion 44 and the wall 48 are elongated as slots, as can be seen in Figure 4.
  • the insulating body 36 is attached to the lug 34 together with the blade-like portion 44 by means of a simple screw 64 (or other metal member, such as a rivet) screwed into the threaded hole of the lug 34.
  • the screw 64 also provides for the fixing of a terminal end 66, better seen in Figure 7, of an earth conductor 68 of a three-core supply cable 70 in electrical contact with the blade-like portion 44.
  • a terminal end like the terminal end 66 of the earth conductor 68 of the three-core supply cable 70 may be fixed in electrical contact with the blade-like element 40 by means of a further screw connection 42.
  • an insulating body like the insulating body 36 may also comprise only one attachment projection like the projection 58, intended to couple with a single attachment aperture like the aperture 50.
  • the insulating body 36 includes at least one cable clamp and, preferably, as shown, a pair of cable clamps.
  • the two cable clamps are generally indicated 72 and 74 in Figures 1 and 4 to 7.
  • Each cable clamp 72,74 is preferably situated, as shown, on a side of the insulating body 36 opposite the side adjacent the aforesaid support body 26.
  • Each cable clamp 72, 74 defines a passage which preferably, as shown, is oriented vertically when the compressor has been installed to allow the insertion ( Figure 7) of the supply cable 70 (in the cable clamp 72) and a bundle of conductors 76 (in the cable clamp 74) upwards from below, in conformity with safety regulations.
  • each cable clamp 72, 74 includes an associated hollow 78, 80 ( Figures 3,5 and 6) on one side in the base wall 56 of the insulating body 36, and an associated clamp 82,84 on the other side.
  • the insulating body 36 is formed from a synthetic material which is relatively flexible in small thicknesses and each clamp 82, 84 is formed as a single piece with the body 36 and is connected integrally with the body itself by an associated flexible thread-like connector 88,90.
  • the tightening of the clamp 82,84 is obtained by means of associated screws 92,94 screwed into the body 36.
  • Figure 7 shows an example of the wiring of the supply and protection device including the two separate bodies 26 and 36.
  • the cable clamp 72 holds the ends of the three-core supply cable 70, the end terminal of which is fixed to the screw 64 which, at the same time, fixes the body 76 to the lug 34 ( Figures 2,3 and 4).
  • phase conductors 96 lead to respective blades of the terminal board 32.
  • the terminal board 32 includes further blades to which lead the conductors of the bundle 76 locked in the cable clamp 74.
  • Earth conductors 98 form part of the bundle 76, which lead to the blades 46 of the blade-like element 40, and serve to connect other parts of the refrigeration machine to earth.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
EP97102972A 1996-02-29 1997-02-24 Dispositif d'alimentation et de protection pour un compresseur hermétique d'une machine frigorifique et compresseur hermétique pourvu d'un tel dispositif Expired - Lifetime EP0793068B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO960146 1996-02-29
IT96TO000146A IT1285278B1 (it) 1996-02-29 1996-02-29 Dispositivo di alimentazione e protezione di un compressore ermetico di una macchina frigorifera, dispositivo per il collegamento di

Publications (2)

Publication Number Publication Date
EP0793068A1 true EP0793068A1 (fr) 1997-09-03
EP0793068B1 EP0793068B1 (fr) 2002-05-15

Family

ID=11414329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102972A Expired - Lifetime EP0793068B1 (fr) 1996-02-29 1997-02-24 Dispositif d'alimentation et de protection pour un compresseur hermétique d'une machine frigorifique et compresseur hermétique pourvu d'un tel dispositif

Country Status (4)

Country Link
EP (1) EP0793068B1 (fr)
DE (1) DE69712559T2 (fr)
ES (1) ES2176541T3 (fr)
IT (1) IT1285278B1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999061847A1 (fr) * 1998-05-28 1999-12-02 Zanussi Elettromeccanica S.P.A. Compresseur de refrigeration hermetique possedant des moyens ameliores de commande et de raccordement
EP1111316A1 (fr) * 1999-12-20 2001-06-27 MINU S.p.A. Ensemble bloc de connexion pour le raccordement des compresseurs à moteur, notamment pour des réfrigérateurs
WO2002047236A2 (fr) * 2000-12-04 2002-06-13 Empresa Brasileira De Compressores S.A - Embraco Configuration de construction pour le systeme de demarrage d'un moteur electrique
US6760216B2 (en) * 2002-08-09 2004-07-06 Samsung Gwangju Electronics Co., Ltd. Protective cover mounting apparatus for a hermetic compressor
WO2005103587A1 (fr) * 2004-04-20 2005-11-03 Danfoss Commercial Compressors Boitier de composants electriques et electroniques pour compresseur de refrigeration
WO2006058396A2 (fr) * 2004-12-03 2006-06-08 Whirlpool S.A. Ensemble de montage pour systeme de demarrage d'un compresseur
WO2008004094A2 (fr) * 2006-07-06 2008-01-10 Itw Industrial Components S.R.L. Con Unico Socio Dispositif serre-câbles
KR100849513B1 (ko) * 2000-12-04 2008-07-31 월풀 에쎄.아. 전동기의 시동 시스템용 구조 장치
WO2009091901A1 (fr) * 2008-01-17 2009-07-23 Bitzer Scroll Inc. Compresseur à spirale ayant une bande d'alimentation standardisée
DE102008033764A1 (de) 2008-07-18 2010-01-21 Danfoss Compressors Gmbh Hermetisch gekapselter Kältemittelkompressor
WO2017076465A1 (fr) * 2015-11-06 2017-05-11 Arcelik Anonim Sirketi Ensemble carte d'onduleur destiné à être utilisé avec un compresseur hermétique
EP3258104A1 (fr) * 2016-06-14 2017-12-20 Whirlpool S.A. Compresseur alternatif et procédé de montage de boîtier hermétique pour compresseur alternatif
EP3660305A1 (fr) 2018-11-29 2020-06-03 Embraco Indústria de Compressores e Soluções em Refrigeração Ltda. Agencement d'ensemble de mise à la terre électrique pour compresseur alternatif

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2028340A7 (fr) * 1969-01-15 1970-10-09 Bosch
US4467385A (en) * 1981-08-07 1984-08-21 Aspera S.P.A. Supply and protection unit for a hermetic compressor
FR2541831A1 (fr) * 1983-02-28 1984-08-31 Thomson Brandt Boitier de connexion electrique pour moteur de compresseur
EP0313024A1 (fr) * 1987-10-20 1989-04-26 Zanussi Elettromeccanica S.p.A. Compresseur encapsulé hermétiquement avec moyens de connexion mécaniques et électriques

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2028340A7 (fr) * 1969-01-15 1970-10-09 Bosch
US4467385A (en) * 1981-08-07 1984-08-21 Aspera S.P.A. Supply and protection unit for a hermetic compressor
FR2541831A1 (fr) * 1983-02-28 1984-08-31 Thomson Brandt Boitier de connexion electrique pour moteur de compresseur
EP0313024A1 (fr) * 1987-10-20 1989-04-26 Zanussi Elettromeccanica S.p.A. Compresseur encapsulé hermétiquement avec moyens de connexion mécaniques et électriques

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999061847A1 (fr) * 1998-05-28 1999-12-02 Zanussi Elettromeccanica S.P.A. Compresseur de refrigeration hermetique possedant des moyens ameliores de commande et de raccordement
FR2779187A1 (fr) * 1998-05-28 1999-12-03 Zanussi Elettromecc Motocompresseur hermetique avec dispositifs ameliores de commande et de controle
GB2354045A (en) * 1998-05-28 2001-03-14 Zanussi Elettrodomestici Hermetic refrigeration compressor with improved control and connection means
GB2354045B (en) * 1998-05-28 2001-11-28 Zanussi Elettromecc Hermetic refrigeration compressor with improved control and connection means
EP1111316A1 (fr) * 1999-12-20 2001-06-27 MINU S.p.A. Ensemble bloc de connexion pour le raccordement des compresseurs à moteur, notamment pour des réfrigérateurs
WO2002047236A3 (fr) * 2000-12-04 2002-08-01 Brasil Compressores Sa Configuration de construction pour le systeme de demarrage d'un moteur electrique
WO2002047236A2 (fr) * 2000-12-04 2002-06-13 Empresa Brasileira De Compressores S.A - Embraco Configuration de construction pour le systeme de demarrage d'un moteur electrique
US6841730B2 (en) 2000-12-04 2005-01-11 Empresa Brasileira De Compressores S.A. -Embraco Constructive arrangement for the starting system of an electric motor
KR100849513B1 (ko) * 2000-12-04 2008-07-31 월풀 에쎄.아. 전동기의 시동 시스템용 구조 장치
US6760216B2 (en) * 2002-08-09 2004-07-06 Samsung Gwangju Electronics Co., Ltd. Protective cover mounting apparatus for a hermetic compressor
WO2005103587A1 (fr) * 2004-04-20 2005-11-03 Danfoss Commercial Compressors Boitier de composants electriques et electroniques pour compresseur de refrigeration
US7194871B2 (en) 2004-04-20 2007-03-27 Danfoss Commercial Compressors Electrical and electronic component cabinet for a refrigeration compressor
WO2006058396A2 (fr) * 2004-12-03 2006-06-08 Whirlpool S.A. Ensemble de montage pour systeme de demarrage d'un compresseur
WO2006058396A3 (fr) * 2004-12-03 2006-08-24 Brasil Compressores Sa Ensemble de montage pour systeme de demarrage d'un compresseur
WO2008004094A3 (fr) * 2006-07-06 2008-05-08 Itw Ind Components Srl Dispositif serre-câbles
US8030573B2 (en) 2006-07-06 2011-10-04 Itw Industrial Components S.R.L. Con Unico Socio Cable-clamping device
WO2008004094A2 (fr) * 2006-07-06 2008-01-10 Itw Industrial Components S.R.L. Con Unico Socio Dispositif serre-câbles
CN101443965B (zh) * 2006-07-06 2011-06-08 Itw工业组件有限责任公司（独个股东） 电缆夹紧装置
WO2009091901A1 (fr) * 2008-01-17 2009-07-23 Bitzer Scroll Inc. Compresseur à spirale ayant une bande d'alimentation standardisée
US7997877B2 (en) 2008-01-17 2011-08-16 Bitzer Kuhlmaschinenbau Gmbh Scroll compressor having standardized power strip
CN101629564B (zh) * 2008-07-18 2015-12-09 思科普有限责任公司 密封封闭的制冷剂压缩机
DE102008033764A1 (de) 2008-07-18 2010-01-21 Danfoss Compressors Gmbh Hermetisch gekapselter Kältemittelkompressor
DE102008033764B4 (de) * 2008-07-18 2017-04-06 Secop Gmbh Hermetisch gekapselter Kältemittelkompressor
WO2017076465A1 (fr) * 2015-11-06 2017-05-11 Arcelik Anonim Sirketi Ensemble carte d'onduleur destiné à être utilisé avec un compresseur hermétique
EP3371452B1 (fr) 2015-11-06 2020-03-04 Arçelik Anonim Sirketi Ensemble carte d'onduleur destiné à être utilisé avec un compresseur hermétique
EP3258104A1 (fr) * 2016-06-14 2017-12-20 Whirlpool S.A. Compresseur alternatif et procédé de montage de boîtier hermétique pour compresseur alternatif
CN107503912A (zh) * 2016-06-14 2017-12-22 惠而浦股份有限公司 往复式压缩机和用于安装往复式压缩机的气密壳体的方法
EP3660305A1 (fr) 2018-11-29 2020-06-03 Embraco Indústria de Compressores e Soluções em Refrigeração Ltda. Agencement d'ensemble de mise à la terre électrique pour compresseur alternatif
US10851768B2 (en) 2018-11-29 2020-12-01 Embraco Industria de Compressores e Solucoes em Refrigeracao Ltda. Electrical grounding assembly arrangement for reciprocating compressor

Also Published As

Publication number Publication date
ES2176541T3 (es) 2002-12-01
DE69712559D1 (de) 2002-06-20
EP0793068B1 (fr) 2002-05-15
ITTO960146A0 (fr) 1996-02-29
DE69712559T2 (de) 2002-11-28
ITTO960146A1 (it) 1997-08-29
IT1285278B1 (it) 1998-06-03

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