WO1999061847A1 - Hermetic refrigeration compressor with improved control and connection means - Google Patents

Hermetic refrigeration compressor with improved control and connection means Download PDF

Info

Publication number
WO1999061847A1
WO1999061847A1 PCT/EP1999/002642 EP9902642W WO9961847A1 WO 1999061847 A1 WO1999061847 A1 WO 1999061847A1 EP 9902642 W EP9902642 W EP 9902642W WO 9961847 A1 WO9961847 A1 WO 9961847A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressor
bracket
refrigeration compressor
hermetic refrigeration
connection means
Prior art date
Application number
PCT/EP1999/002642
Other languages
French (fr)
Inventor
Roberto Missio
Original Assignee
Zanussi Elettromeccanica S.P.A.
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 Zanussi Elettromeccanica S.P.A. filed Critical Zanussi Elettromeccanica S.P.A.
Priority to BR9910768-6A priority Critical patent/BR9910768A/en
Priority to JP2000551202A priority patent/JP2002516979A/en
Priority to GB0027900A priority patent/GB2354045B/en
Priority to SI9920052A priority patent/SI20388B/en
Priority to US09/700,822 priority patent/US6375439B1/en
Publication of WO1999061847A1 publication Critical patent/WO1999061847A1/en

Links

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
    • 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 mvenhon refers to a hermetic refrigeration compressor, in particular such a compressor as used in refrigeration appliances for household applications.
  • Hermetic refrigeration compressors of the above mentioned kind are usually enclosed in a container, or casing, on the wall of which there are attached, by means of a mounting bracket welded on to the outside wall of said casing, the control and connection means of the compressor itself.
  • Such means include: an overload cutout device provided with a protective support and electnc terminals; an electric starter; a terminal block for the connection of the power supply cables; a strain-relief; and a removable closing cover adapted to enclose and protect all of the above cited means.
  • the closmg cover is attached on to the bracket by snap-fitting it thereonto in the direcnon of the greater axis of the casing which is oval in its shape
  • a snap-fitting attachment requires a considerable extent of accuracy m the construcnon of the support m order to ensure a precise, firm and reliable attachment.
  • the axial assembly calls for the availability of a greater space inside the refrigeration appliance, since it contnbutes to a larger overall size of the compressor itself
  • the new solution is effective in reducing the number of component parts to be assembled, decreasing the overall space requirements of the compressor, making it easier for the enclosmg cover to be attached in position and for access to the control and power connection means of the compressor to be gained.
  • the above aims are reached in particular by mtegraimg the termmal block housmg the electncal contacts with the the addition of the support of the overload cutout of the compressor motor, so as recited in the appended claim 1.
  • FIG. 1 is an exploded perspective view of a lamination of a hermehc refngeranon compressor with the yet to be assembled control and connection means according to the present mvennon;
  • - Figure 2 is a front view of a detail of the control and connecnon means of the compressor shown m Figure 1
  • - Figure 3 is a partial perspecnve view of the compressor shown in Figure 1 , but with its control and connechon means duly assembled.
  • the casing of the hermetic refrigeration compressor 10 is provided with an appropnately shaped bracket 11 which is welded on to the outer side surface thereof and from which the part 12 protrudes with the terminals for the connection of the compressor motor to an overload cutout 13.
  • the latter is arranged m a support 14 provided in an one-piece construction 15 that integrally mcludes also the electnc starter 16 (usually a PTC, ie. a positive temperature coefficient resistor) and the termmal block 17 for the connection of the motor power supply cables.
  • the electnc starter 16 usually a PTC, ie. a positive temperature coefficient resistor
  • the power supply cables are fixed by means of a strain-relief device 18 which is provided with elastically pliable appendices 19 and 20 adapted to retain the cables (not shown) m the respective through-passing seats.
  • the strain-relief device 18 is provided with elastically pliable appendices 19 and 20 adapted to retain the cables (not shown) m the respective through-passing seats.
  • a cover 27 is then inserted onto the bracket 11 so as to enclose all of the above described component parts.
  • the first important feature of this improved solution consists in the support 14 of the motor overload cutout 13 and the terminal block 15 having so been made in a single-piece construction 15, thereby eliminating the use of a cable in order to connect said two component parts to each other , as this normally occurs in prior-art solutions.
  • this is effective not only in enabling the part count to be reduced, but also the assembly of the whole device to be greatly simplified.
  • the support 14 itself may of course be made so as to enable it to selectively accomodate vanous types of overalod cutouts, sa as this is for instance described m the patent publication GB-A-2258499 to the same Applicant.
  • a f rther feature of the solunon according to the present invention consists m the fact that the bracket 11 is provided with a first guide 28, and the strain-relief 18 is in turn provided with a second guide 29, said guides bemg capable of bemg engaged by conespondmg folded edges of the cover 27.
  • These guides 28 and 29 are rectilinear, extend parallelly to each other and are arranged horizontally on two distinct levels. Such guides are further substantially orthogonal to the greater axis of the casmg 10 of the compressor, which has usually an oval shape. As a result, the cover 27 can be mounted and removed by simply letting it slide on said guides 28 and 29 accordingly.
  • This solution ensures a greater assembly accuracy and reliability as compared with the preceding snap-fitting assembly solutions. Furthermore, it enables the space required for accomodatmg the compressor inside the refrigeration appliance to be reduced. In fact, the assembly/disassembly of the cover is earned out in a direction which is parallel to the smaller axis of the casmg 10, ie. from the less-encumbering side of the same casing. In other words, the control and connection means of the compressor are made accessible by opening the cover 27 m a direction which is tangential, rather than radial, to the casing 10.
  • the bracket 11 is provided, at the upper end of its portion 30 that is bent orthogonally to the wall of the casmg 10, with coupling means for an auxiliary bracket 31.
  • Such an auxiliary bracket 31 is provided, at its free end, with an aperture in which the threaded termmal of a capacitor 32 is capable of being inserted to be clamped on to the same bracket 31 by means of a conespondmg threaded nut.
  • a capacitor 32 is the running capacitor of the compressor motor, which quite often, owing to space and encumbrance reasons, is actually arranged separately from the related motor itself and therefore requires a relatively long cable for connection to the termmal block 17.
  • the auxiliary bracket 31 can also be made integral or firmly joined with the bracket 11 , but it is preferably removable m view of making it possible for the capacitor 32 to be arranged m differing manners, according to the actual needs of the user.
  • the proposed solution is anyway effective m bnngmg about a further integration of the control and connection means of hermetic refrigeration compressors, thereby allowmg for a particular effectiveness and convenience m use.

Abstract

Hermetic refrigeration compressor, in particular for household refrigeration appliances, comprising control and connection means, such as a motor overload cutout (13) provided with a protective support (14), an electric motor starter (16), a terminal block (17) with related strain-relief (18), and a closing cover (27), in which some of these component parts are integrated into a single one-piece construction (15). The cover (27) is mounted slidably in a direction which is tangential to the casing (10) of the compressor. This solution is advantageous in that it cuts the number of parts to be assembled and reduces the amount of space required to accommodate the compressor.

Description

HERMETIC REFRIGERATION COMPRESSOR WITH IMPROVED CONTROL
AND CONNECTION MEANS
DESCRIPTION
The present mvenhon refers to a hermetic refrigeration compressor, in particular such a compressor as used in refrigeration appliances for household applications.
Hermetic refrigeration compressors of the above mentioned kind are usually enclosed in a container, or casing, on the wall of which there are attached, by means of a mounting bracket welded on to the outside wall of said casing, the control and connection means of the compressor itself. Such means include: an overload cutout device provided with a protective support and electnc terminals; an electric starter; a terminal block for the connection of the power supply cables; a strain-relief; and a removable closing cover adapted to enclose and protect all of the above cited means.
An example of such a pnor-art solution is described m the European patent publication no. 0313024 to the same Applicant.
This solution, although capable of fulfilling its task in a correct manner, calls for a rather complicated and cost-intensive assembly, smce the various component parts shall first be pre-assembled and then attached to the support bracket.
Furthermore, the closmg cover is attached on to the bracket by snap-fitting it thereonto in the direcnon of the greater axis of the casing which is oval in its shape Sucn a snap-fitting attachment requires a considerable extent of accuracy m the construcnon of the support m order to ensure a precise, firm and reliable attachment. The axial assembly calls for the availability of a greater space inside the refrigeration appliance, since it contnbutes to a larger overall size of the compressor itself
It is therefore a mam purpose of the present invennon to simplify and rationalize the construcnon and the assembly of the component parts constituting the control and connection means of a hermetic refrigeration compressor, so as to do away with the typical drawbacks of the pnor-art solutions, while denvmg further advantages of both a technical and economic nature.
In particular, the new solution is effective in reducing the number of component parts to be assembled, decreasing the overall space requirements of the compressor, making it easier for the enclosmg cover to be attached in position and for access to the control and power connection means of the compressor to be gained.
According to the present invention, the above aims are reached in particular by mtegraimg the termmal block housmg the electncal contacts with the the addition of the support of the overload cutout of the compressor motor, so as recited in the appended claim 1.
Further features and advantages of the present invention will be more readily understood from the descripnon that is given below by way of non-limiting example with reference to the accompanying drawings, in which
- Figure 1 is an exploded perspective view of a lamination of a hermehc refngeranon compressor with the yet to be assembled control and connection means according to the present mvennon;
- Figure 2 is a front view of a detail of the control and connecnon means of the compressor shown m Figure 1 , and - Figure 3 is a partial perspecnve view of the compressor shown in Figure 1 , but with its control and connechon means duly assembled.
As illustrated in Figure 1 , the casing of the hermetic refrigeration compressor 10 is provided with an appropnately shaped bracket 11 which is welded on to the outer side surface thereof and from which the part 12 protrudes with the terminals for the connection of the compressor motor to an overload cutout 13. The latter is arranged m a support 14 provided in an one-piece construction 15 that integrally mcludes also the electnc starter 16 (usually a PTC, ie. a positive temperature coefficient resistor) and the termmal block 17 for the connection of the motor power supply cables.
The power supply cables are fixed by means of a strain-relief device 18 which is provided with elastically pliable appendices 19 and 20 adapted to retain the cables (not shown) m the respective through-passing seats. The strain-relief device
18 is fixed to the bracket 11 through the insertion of appendices 21, 22 in respective apertures 23, 24, and the edge 25 under the tab 26.
A cover 27 is then inserted onto the bracket 11 so as to enclose all of the above described component parts.
According to the present invention, the first important feature of this improved solution consists in the support 14 of the motor overload cutout 13 and the terminal block 15 having so been made in a single-piece construction 15, thereby eliminating the use of a cable in order to connect said two component parts to each other, as this normally occurs in prior-art solutions. As a result, this is effective not only in enabling the part count to be reduced, but also the assembly of the whole device to be greatly simplified.
The support 14 itself may of course be made so as to enable it to selectively accomodate vanous types of overalod cutouts, sa as this is for instance described m the patent publication GB-A-2258499 to the same Applicant. A f rther feature of the solunon according to the present invention consists m the fact that the bracket 11 is provided with a first guide 28, and the strain-relief 18 is in turn provided with a second guide 29, said guides bemg capable of bemg engaged by conespondmg folded edges of the cover 27. These guides 28 and 29 are rectilinear, extend parallelly to each other and are arranged horizontally on two distinct levels. Such guides are further substantially orthogonal to the greater axis of the casmg 10 of the compressor, which has usually an oval shape. As a result, the cover 27 can be mounted and removed by simply letting it slide on said guides 28 and 29 accordingly.
This solution ensures a greater assembly accuracy and reliability as compared with the preceding snap-fitting assembly solutions. Furthermore, it enables the space required for accomodatmg the compressor inside the refrigeration appliance to be reduced. In fact, the assembly/disassembly of the cover is earned out in a direction which is parallel to the smaller axis of the casmg 10, ie. from the less-encumbering side of the same casing. In other words, the control and connection means of the compressor are made accessible by opening the cover 27 m a direction which is tangential, rather than radial, to the casing 10.
Finally, a further feature of the solution according to the present invention should be duly pomted out. The bracket 11 is provided, at the upper end of its portion 30 that is bent orthogonally to the wall of the casmg 10, with coupling means for an auxiliary bracket 31. Such an auxiliary bracket 31 is provided, at its free end, with an aperture in which the threaded termmal of a capacitor 32 is capable of being inserted to be clamped on to the same bracket 31 by means of a conespondmg threaded nut. Such a capacitor 32 is the running capacitor of the compressor motor, which quite often, owing to space and encumbrance reasons, is actually arranged separately from the related motor itself and therefore requires a relatively long cable for connection to the termmal block 17.
The auxiliary bracket 31 can also be made integral or firmly joined with the bracket 11 , but it is preferably removable m view of making it possible for the capacitor 32 to be arranged m differing manners, according to the actual needs of the user. The proposed solution is anyway effective m bnngmg about a further integration of the control and connection means of hermetic refrigeration compressors, thereby allowmg for a particular effectiveness and convenience m use.

Claims

1. Hermetic refrigeration compressor, m particular for household refrigeration appliances, enclosed m an outer casmg (10) and comprising control and connection means, such as a motor overaload cutout (13) provided with a protective support (14), an electnc motor starter (16), a termmal block (17) and a strain-relief (18) for the connection of the power supply cables, and a closmg cover (27), in which all said component parts are mounted on a bracket (11) attached on to the outer wall of the compressor, characterized in that said protective support (14), said electnc starter (16) and said termmal block (17) are integrated into a single one-piece construction (15).
2. Hermetic refrigeration compressor accordmg to claim 1, characterized in that said cover (27) is mounted slidably, m a direction which is tangential to the casmg (10), on a first guide (28) provided on the bracket (11) and a second guide (29) provided on the strain-relief (18).
3. Hermetic refrigeration compressor accordmg to claim 2, characterized in that said guides (28, 29) extend parallelly to each other and are arranged horizontally on two distinct levels, m a direction which is orthogonal to the greater axis of the casmg (10).
4. Hermetic refrigeration compressor accordmg to any of the precedmg claims 1 to 3, characterized m that said bracket (11) supports an auxiliary bracket (31) which the runnmg capacitor (32) of the compressor motor is capable of bemg fastened to
PCT/EP1999/002642 1998-05-28 1999-04-20 Hermetic refrigeration compressor with improved control and connection means WO1999061847A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BR9910768-6A BR9910768A (en) 1998-05-28 1999-04-20 Hermetic refrigeration compressor
JP2000551202A JP2002516979A (en) 1998-05-28 1999-04-20 Hermetic cooling compressor with improved control and connection means
GB0027900A GB2354045B (en) 1998-05-28 1999-04-20 Hermetic refrigeration compressor with improved control and connection means
SI9920052A SI20388B (en) 1998-05-28 1999-04-20 Hermetic refrigeration compressor with improved control and connection means
US09/700,822 US6375439B1 (en) 1998-05-28 1999-04-20 Hermetic refrigeration compressor with improved control and connection means

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPN98U000030 1998-05-28
IT1998PN000030U IT245312Y1 (en) 1998-05-28 1998-05-28 HERMETIC MOTOR-COMPRESSOR WITH IMPROVED COMMAND AND CONTROL DEVICES

Publications (1)

Publication Number Publication Date
WO1999061847A1 true WO1999061847A1 (en) 1999-12-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/002642 WO1999061847A1 (en) 1998-05-28 1999-04-20 Hermetic refrigeration compressor with improved control and connection means

Country Status (12)

Country Link
US (1) US6375439B1 (en)
JP (1) JP2002516979A (en)
CN (1) CN1123746C (en)
BR (1) BR9910768A (en)
DE (1) DE29909117U1 (en)
DK (1) DK199900215U3 (en)
ES (1) ES1043043Y (en)
FR (1) FR2779187B1 (en)
GB (1) GB2354045B (en)
IT (1) IT245312Y1 (en)
SI (1) SI20388B (en)
WO (1) WO1999061847A1 (en)

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EP1700067A2 (en) * 2003-12-30 2006-09-13 Copeland Corporation Compressor protection and diagnostic system
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US9310439B2 (en) 2012-09-25 2016-04-12 Emerson Climate Technologies, Inc. Compressor having a control and diagnostic module
US9310094B2 (en) 2007-07-30 2016-04-12 Emerson Climate Technologies, Inc. Portable method and apparatus for monitoring refrigerant-cycle systems
US9480177B2 (en) 2012-07-27 2016-10-25 Emerson Climate Technologies, Inc. Compressor protection module
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US9651286B2 (en) 2007-09-19 2017-05-16 Emerson Climate Technologies, Inc. Refrigeration monitoring system and method
US9669498B2 (en) 2004-04-27 2017-06-06 Emerson Climate Technologies, Inc. Compressor diagnostic and protection system and method
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EP1111316A1 (en) * 1999-12-20 2001-06-27 MINU S.p.A. Terminal block assembly for connecting motor-actuated compressors, particularly for refrigerators
EP1700067A2 (en) * 2003-12-30 2006-09-13 Copeland Corporation Compressor protection and diagnostic system
EP1768237A3 (en) * 2003-12-30 2007-08-29 Emerson Climate Technologies, Inc. Compressor protection and control system
EP1700067A4 (en) * 2003-12-30 2007-09-05 Emerson Climate Technologies Compressor protection and diagnostic system
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US7648342B2 (en) 2003-12-30 2010-01-19 Emerson Climate Technologies, Inc. Compressor protection and diagnostic system
US9669498B2 (en) 2004-04-27 2017-06-06 Emerson Climate Technologies, Inc. Compressor diagnostic and protection system and method
US10335906B2 (en) 2004-04-27 2019-07-02 Emerson Climate Technologies, Inc. Compressor diagnostic and protection system and method
US9017461B2 (en) 2004-08-11 2015-04-28 Emerson Climate Technologies, Inc. Method and apparatus for monitoring a refrigeration-cycle system
US8974573B2 (en) 2004-08-11 2015-03-10 Emerson Climate Technologies, Inc. Method and apparatus for monitoring a refrigeration-cycle system
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BR9910768A (en) 2001-02-13
CN1297522A (en) 2001-05-30
ES1043043U (en) 1999-11-01
IT245312Y1 (en) 2002-03-20
FR2779187B1 (en) 2002-02-01
GB2354045B (en) 2001-11-28
SI20388B (en) 2008-02-29
DE29909117U1 (en) 1999-07-29
GB0027900D0 (en) 2000-12-27
SI20388A (en) 2001-04-30
FR2779187A1 (en) 1999-12-03
JP2002516979A (en) 2002-06-11
GB2354045A (en) 2001-03-14
CN1123746C (en) 2003-10-08
ITPN980030U1 (en) 1999-11-28
ES1043043Y (en) 2000-04-01
US6375439B1 (en) 2002-04-23
DK199900215U3 (en) 1999-10-08

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