EP0313024B1 - Hermetically enclosed compressor with mechanical and electrical connection means - Google Patents
Hermetically enclosed compressor with mechanical and electrical connection means Download PDFInfo
- Publication number
- EP0313024B1 EP0313024B1 EP19880117410 EP88117410A EP0313024B1 EP 0313024 B1 EP0313024 B1 EP 0313024B1 EP 19880117410 EP19880117410 EP 19880117410 EP 88117410 A EP88117410 A EP 88117410A EP 0313024 B1 EP0313024 B1 EP 0313024B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compressor
- refrigerator
- terminal strip
- mounting base
- strip
- 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.)
- Expired
Links
Images
Classifications
-
- 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
-
- 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
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
Definitions
- the present invention relates to a hermetically enclosed compressor according to DE-B-26 04 764.
- the innumerable possibilities of designing an electric circuit for a domestic refrigerator manufactured on an industrial scale may be basically reduced to just two alternative arrangements: the first of these arrangements is directed to the provision at any suitable location within the refrigerator of a suitable terminal strip or box so as to be accessible from the exterior, usually from the rear of the refrigerator.
- terminal box or strip Combined in this terminal box or strip are the terminals of all the electric component circuits of the refrigerator, the terminal box or strip being internally provided with means for interconnecting the various component circuits so as to result in a unitary circuit.
- the terminal box or strip is finally connected to an external power supply cable to thereby complete the wiring of the refrigerator.
- This solution is represented by DE-A-31 42 773 with respect to the connections between relays, the starter and the thermal protection device.
- the second arrangement proceeds from the recognition that the compressor is usually provided with certain electric components associated and connected thereto in a permanent manner and required for ensuring proper operation of the compressor, typically a starter and a thermal protection device.
- the present invention is therefore directed to the obtention of the following advantages:
- a hermetically enclosed compressor similarly conceived for connection via a separate terminal strip or an integrated terminal strip, to permit the alternative employ of two integrated structures each having the same mechanical and electrical mounting base to be attached to the compressor, and an integral module including the starter, the thermal protection device and a protection cover, but having different systems for the electric connection to the remaining circuit components of the refrigerator.
- the cable connection members comprise at least one integrated structure including a mounting base and a terminal strip, or alternatively an integrated structure including a mounting base and a cable clamping insert, said integrated structures being adapted to be mechanically mounted in an interlocking fit on a metallic base formed by punching and bending a sheet metal blank and permanently secured to the compressor adjacent the hermetically sealed connection terminal thereof.
- a domestic refrigerator presents, when viewed from the rear, a lower cavity 1 housing a compressor 2 with its external components 3 and the delivery and return pipes 4 and 5, respectively, of the refrigerant circuit. Also diagrammatically shown are a condenser 6 and a capillary 7.
- the refrigerator further includes a terminal strip or box 8, an external power supply cable 9, a connection 10 leading from terminal strip 8 to compressor 2, and a number of connections 11, 12 leading from terminal strip 8 to other electrical components of the refrigerator.
- a metallic mounting base 13 suitably welded to the outer casing 14 of the compressor adjacent the power supply terminals (not shown) thereof so that the latter extend through an opening 15 formed in mounting base 13.
- Fig. 4 Also shown in Fig. 4 are the horizontally positioned starter 20 and the thermal protection device 21 housed respectively in suitable cavities of the dismountable support 26.
- Support 26 is provided with a plurality of preferably internal contacts 31, the employ of which will be specified in the following.
- a first element 22 acting as a connector-terminal unit is composed of external electrical terminals 23 arranged and disposed for being connected to corresponding external conductors, of internal electric connections 32 between said terminals 23, of at least one external contact 321, and of a tongue 27 and detent 28 mechanism for releasably mounting and positioning said element 22 in cooperation with a corresponding guide 29 and recess 30, respectively, provided on an angularly extending leg portion of mounting plate 13.
- the mechanical configuration is selected so that, when element 22 is mounted on mounting plate 13, contact 321 is positively coupled to one of contacts 31.
- a second dismountable element 24 is composed of a tongue and detent mechanism fully identical to the above described elements 27 and 28, and of one or several cable holder inserts for individually retaining the power supply and grounding conductors leading to the compressor, and to be manually connected in the conventional manner to contacts 31 and/or to contacts projecting from the rear part of one of the relays, e.g. relay 21.
- the electric connection is automatically established either between contacts 321 and 31, or through a suitable connection between one of terminals 23 and one of the contacts projecting from the rear part of one of the relays, e.g. relay 21.
Description
- The present invention relates to a hermetically enclosed compressor according to DE-B-26 04 764.
- According to the actual state of the art, the design of the electric connection of such compressors is fundamentally dictated by the design of the electric circuit of the refrigerator as a whole.
- The innumerable possibilities of designing an electric circuit for a domestic refrigerator manufactured on an industrial scale may be basically reduced to just two alternative arrangements: the first of these arrangements is directed to the provision at any suitable location within the refrigerator of a suitable terminal strip or box so as to be accessible from the exterior, usually from the rear of the refrigerator.
- Combined in this terminal box or strip are the terminals of all the electric component circuits of the refrigerator, the terminal box or strip being internally provided with means for interconnecting the various component circuits so as to result in a unitary circuit.
- The terminal box or strip is finally connected to an external power supply cable to thereby complete the wiring of the refrigerator. This solution is represented by DE-A-31 42 773 with respect to the connections between relays, the starter and the thermal protection device.
- The second arrangement, applicable as an alternative to the first one proceeds from the recognition that the compressor is usually provided with certain electric components associated and connected thereto in a permanent manner and required for ensuring proper operation of the compressor, typically a starter and a thermal protection device.
- As this assembly already constitutes an elementary electric circuit, it is found convenient to connect the compressor itself directly to the external power supply. The power is then supplied to the remaining circuit components of the refrigerator via a suitable connection arrangement including a terminal box or strip to which the circuit components other than the compressor are connected and which serves the same purpose as described before, to thereby complete the wiring of the refrigerator. This second solution is represented by DE-A-33 20 391. A box includes the starter and the thermal protection device.
- From a purely electrical viewpoint the two solutions are substantially equivalent. From the viewpoint, however, of assembly of the connections in the production line there are relevant differences.
- In the first case, in which the various components are electrically connected to the terminal box or strip, there is the advantage of good accessibility, since the terminal box or strip can be disposed at the optimum location; on the other hand this solution requires the additional electric connection of the compressor to the terminal box or strip, obviously resulting in economical disadvantages as regards material requirements and assembly operations.
- In contrast thereto, in the second case explained above there is a concentration of the various circuits at a single location, namely, on the compressor, with evident advantages with regard to material requirements, but indubitably with greater difficulties in finishing and inspection of the wiring, because the connections are established manually after the compressor has been installed, these operations being sometimes rendered difficult by limited accessibility on all sides of the already installed compressor in its housing.
- In addition to all that has been said above, it is to be kept in mind that up to now all of the connections in the wiring of the refrigerator are established by wholly conventional manual operations, with the inevitable possibility of human errors and at relatively high cost.
- The present invention is therefore directed to the obtention of the following advantages:
In a hermetically enclosed compressor similarly conceived for connection via a separate terminal strip or an integrated terminal strip, to permit the alternative employ of two integrated structures each having the same mechanical and electrical mounting base to be attached to the compressor, and an integral module including the starter, the thermal protection device and a protection cover, but having different systems for the electric connection to the remaining circuit components of the refrigerator. - According to the invention, these objects are attained in a domestic refrigerator comprising a compressor having the features defined in claim 1.
- The cable connection members comprise at least one integrated structure including a mounting base and a terminal strip, or alternatively an integrated structure including a mounting base and a cable clamping insert, said integrated structures being adapted to be mechanically mounted in an interlocking fit on a metallic base formed by punching and bending a sheet metal blank and permanently secured to the compressor adjacent the hermetically sealed connection terminal thereof.
- It normally also happens that one and the same compressor model is used by different refrigerator makers in different refrigerator models having different wiring systems, so that it is not always possible to employ an integral structure incorporating a terminal strip for different refrigerator models having different electric circuits.
- The characteristics and advantages of the invention will become evident from the following description, given by way of example with reference to the accompanying drawings, wherein:
- Fig. 1
- is a diagrammatic perspective rear view of a domestic refrigerator of conventional type;
- fig. 2
- is an elevational view of a compressor according to the invention, including a starter, a thermal protection device and a terminal strip;
- fig. 3
- is an elevational view of a compressor according to the invention, including a cable clamping insert;
- fig. 4
- shows an exploded perspective view of the components of the integrated structure.
- With reference to Fig. 1, a domestic refrigerator presents, when viewed from the rear, a lower cavity 1 housing a
compressor 2 with itsexternal components 3 and the delivery andreturn pipes condenser 6 and acapillary 7. - In the "external terminal strip" version shown in fig. 1, the refrigerator further includes a terminal strip or
box 8, an externalpower supply cable 9, aconnection 10 leading fromterminal strip 8 tocompressor 2, and a number ofconnections terminal strip 8 to other electrical components of the refrigerator. - With reference to Fig. 2, there is shown a
metallic mounting base 13, suitably welded to the outer casing 14 of the compressor adjacent the power supply terminals (not shown) thereof so that the latter extend through an opening 15 formed inmounting base 13. - Also shown in Fig. 4 are the horizontally positioned
starter 20 and thethermal protection device 21 housed respectively in suitable cavities of the dismountable support 26. - Support 26 is provided with a plurality of preferably internal contacts 31, the employ of which will be specified in the following.
- A
first element 22 acting as a connector-terminal unit is composed of externalelectrical terminals 23 arranged and disposed for being connected to corresponding external conductors, of internal electric connections 32 between saidterminals 23, of at least one external contact 321, and of a tongue 27 and detent 28 mechanism for releasably mounting and positioning saidelement 22 in cooperation with a corresponding guide 29 and recess 30, respectively, provided on an angularly extending leg portion ofmounting plate 13. - The mechanical configuration is selected so that, when
element 22 is mounted onmounting plate 13, contact 321 is positively coupled to one of contacts 31. - With reference to figs. 3 and 4, a second
dismountable element 24 is composed of a tongue and detent mechanism fully identical to the above described elements 27 and 28, and of one or several cable holder inserts for individually retaining the power supply and grounding conductors leading to the compressor, and to be manually connected in the conventional manner to contacts 31 and/or to contacts projecting from the rear part of one of the relays,e.g. relay 21. - The employ of the device is now evident: depending on the type of the circuitry of the refrigerator, the electric connections are established on
element 22 or alternatively onelement 24. Any of these elements can be readily and interchangeably mounted on the compressor thanks to the complementary construction of the respective mounting structures 27, 28 and 29, 30, respectively. - In the first case the electric connection is automatically established either between contacts 321 and 31, or through a suitable connection between one of
terminals 23 and one of the contacts projecting from the rear part of one of the relays,e.g. relay 21. - In the second case the electric connection is established by manually connecting in the conventional manner the incoming cables to the above named contacts.
- The electric connection between the two
components cable holder 24 is just an alternative to the employ ofelement 22, so that the electric subassembly composed ofcompressor 2, the tworelays - Independently of the type of the connections between the above named electric components, it is finally to be noted that a further simplification in the mounting of these components is obtainable by the provision of a single protective cover 25 dimensioned so as to be able to accommodate any of the two connection arrangements described above and thus to be indifferently employed in any of the two cases.
Claims (2)
- Hermetically enclosed compressor (2) with a mounting base (13) secured to the compressor for carrying the electrical connections,
characterized by
a support member (26) which is dismountably attached to the compressor (2) and formed as a single module adapted to hold a starter (20) and a thermal protection device (21); and
two different cable connection members, one being a terminal strip (22) and the other being a cable clamping insert (24), the mounting base (13), the terminal strip (22) and the cable clamping insert (24) being formed such that the terminal strip (22) and the cable clamping insert (24) are selectively mountable on the mounting base (13). - Compressor according to claim 1, characterized in that there is provided a housing (25) to cover the support member (26) and the cable connection member (22 or 24).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT3405887U IT218547Z2 (en) | 1987-10-20 | 1987-10-20 | HERMETIC COMPRESSORS WITH MECHANICAL AND ELECTRICAL CONNECTION DEVICES. |
IT3405887U | 1987-10-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0313024A1 EP0313024A1 (en) | 1989-04-26 |
EP0313024B1 true EP0313024B1 (en) | 1992-12-30 |
Family
ID=11239101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19880117410 Expired EP0313024B1 (en) | 1987-10-20 | 1988-10-19 | Hermetically enclosed compressor with mechanical and electrical connection means |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0313024B1 (en) |
DE (1) | DE3877123T2 (en) |
ES (1) | ES2037789T3 (en) |
IT (1) | IT218547Z2 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT225654Y1 (en) * | 1991-08-05 | 1997-01-13 | Zanussi Elettromecc | COMPRESSOR WITH PERFECTED SUPPORT OF THERMAL PROTECTOR |
IT1267406B1 (en) * | 1994-03-11 | 1997-02-05 | Itw Fastex Italia Spa | TERMINAL BOARD, IN PARTICULAR FOR HOUSEHOLD APPLIANCES |
IT1268138B1 (en) * | 1994-10-18 | 1997-02-20 | Itw Fastex Italia Spa | INTEGRATED ELECTRICAL POWER SUPPLY UNIT, PARTICULARLY FOR HOUSEHOLD APPLIANCES. |
IT1285278B1 (en) * | 1996-02-29 | 1998-06-03 | Embraco Europ Srl | DEVICE FOR POWER SUPPLY AND PROTECTION OF A HERMETIC COMPRESSOR OF A REFRIGERATING MACHINE, DEVICE FOR CONNECTION OF |
IT245312Y1 (en) | 1998-05-28 | 2002-03-20 | Zanussi Elettromecc | HERMETIC MOTOR-COMPRESSOR WITH IMPROVED COMMAND AND CONTROL DEVICES |
EP1111316A1 (en) * | 1999-12-20 | 2001-06-27 | MINU S.p.A. | Terminal block assembly for connecting motor-actuated compressors, particularly for refrigerators |
ES2407557B1 (en) * | 2010-09-02 | 2014-06-09 | Bsh Electrodomésticos España, S.A. | COOLING EQUIPMENT AND WIRING ASSEMBLY |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2604764C3 (en) * | 1976-02-07 | 1978-08-03 | Danfoss A/S, Nordborg (Daenemark) | Electrical connection device for an encapsulated refrigeration machine |
IT1141680B (en) * | 1980-11-03 | 1986-10-08 | Necchi Spa | TERMINAL BOARD AND RELAY BOX IN MOTOR-COMPRESSORS FOR REFRIGERATING SYSTEMS |
IT1159282B (en) * | 1982-06-11 | 1987-02-25 | Necchi Spa | TERMINAL BLOCK-BOX GROUP STARTING RELAY AND THERMAL PROTECTION FOR HERMETIC MOTOR-COMPRESSORS |
-
1987
- 1987-10-20 IT IT3405887U patent/IT218547Z2/en active
-
1988
- 1988-10-19 EP EP19880117410 patent/EP0313024B1/en not_active Expired
- 1988-10-19 DE DE19883877123 patent/DE3877123T2/en not_active Expired - Fee Related
- 1988-10-19 ES ES88117410T patent/ES2037789T3/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0313024A1 (en) | 1989-04-26 |
ES2037789T3 (en) | 1993-07-01 |
DE3877123D1 (en) | 1993-02-11 |
DE3877123T2 (en) | 1993-04-29 |
IT8734058V0 (en) | 1987-10-20 |
IT218547Z2 (en) | 1992-06-17 |
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