EP0289915A1 - Evaporateur à plaques cannelé pour appareils frigorifiques - Google Patents

Evaporateur à plaques cannelé pour appareils frigorifiques Download PDF

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Publication number
EP0289915A1
EP0289915A1 EP88106676A EP88106676A EP0289915A1 EP 0289915 A1 EP0289915 A1 EP 0289915A1 EP 88106676 A EP88106676 A EP 88106676A EP 88106676 A EP88106676 A EP 88106676A EP 0289915 A1 EP0289915 A1 EP 0289915A1
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EP
European Patent Office
Prior art keywords
evaporator
channel
plate
seams
channeled
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.)
Withdrawn
Application number
EP88106676A
Other languages
German (de)
English (en)
Inventor
Dino Bacci
Alessandor Ros
Edi Zorzit
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.)
Industrie Zanussi SpA
Original Assignee
Industrie Zanussi SpA
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 Industrie Zanussi SpA filed Critical Industrie Zanussi SpA
Publication of EP0289915A1 publication Critical patent/EP0289915A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/022—Evaporators with plate-like or laminated elements
    • F25B39/024—Evaporators with plate-like or laminated elements with elements constructed in the shape of a hollow panel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/035—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other with U-flow or serpentine-flow inside the conduits

Definitions

  • the present invention relates to an eva­porator for refrigeration appliances, which is made up by two suitably shaped steel plates that are bonded to­gether to form a single plate assembly containing the flow channels ensuring the passage of the refrigerant fluid.
  • the resulting evaporator plate assembly is then fed into a press, blown-in and inflated through a hydraulic pump so as to obtain said flow channels.
  • Evaporators are also known, which are ma­de up by two iron plates that are bonded together by braze welding with the interposition of welding mate­rial or filler - usually a metal rod - therebetween (Italian patent no. 999.042).
  • this tech­nique appears to be rather complex in that it requires the use of welding material, while the plates have to undergo a heat treatment in order to promote their bonding.
  • all known evaporators of the plate type exhibit an internal flow channeling of con­siderable overall lenght (approx. 3.50m) to compensa­te for a reduced-size cross-section (approx. 40 to 50 sq.mm) in order to ensure an adequate thermodynamic ef­ficiency.
  • the main purpose of the present invention is to provide a channeled-plate evaporator which pro­ves simple to produce in a reliable and repetitive way, based on the use of suitably shaped steel plates.
  • Welding of said plates for sealing purpo­se is preferably done by laser beam and, therefore, a further aim of the present invention is to reduce the number and the length of the welding paths or seams for a most suitable and economic construction of the evaporator, while preventing it from possibly warping or buckling due to internal pressure of the refrigerant fluid.
  • the evaporator according to the present invention shall be such as to ensure a bet­ter utilization of heat-exchange surfaces, so as to at least match current "roll-bond” evaporators in efficien­cy.
  • a channeled plate evaporator in particular for refrigeration appliances, formed by two suitably shaped steel plates that are welded together with a plurality of seams to form a single plate assem­bly containing at least a flow channel for the circu­lation of the refrigerant fluid, the evaporator being characterized in that the channel substantially takes the whole volume of the plate assembly, said plurality of seams including laser weldings, which ensure seal­ing of the said channel, and spot weldings giving the evaporator the required strength and dimensional stabi­lity.
  • the evaporator according to the invention appears in the form of a plate assembly 5 (Figs. 1 and 2) involving two single plates 6,7 (Figs. 3, 4) of car­bon steel, ie. a material with good forming properties.
  • One of said plates is preferably flat, while the second one has a substantially rectangular drawn portion, with rounded corners to facilitate the drawing operation.
  • This embodiment appears quite advanta­geous whenever the evaporator is attached freely, ie. not in a tight contact with the inner wall of the re­frigerator.
  • the plates 6 and 7 must be bonded together in order to ensure the tight separa­tion of the channels. This is most suitably done by means of laser welding so that no filler or heat-treat­ment is required any longer, such as in the case of the known steel evaporator designs with braze-welded plates.
  • the proposed solution lies in the construction of an evaporator 5 having at least an inner channel 20 which substantially involves the whole volume of the plate assembly (Figs. 1 and 2).
  • the channeling of the evapora­tor according to the invention has a quite limited length and a substantially rectangular, wide-sized cross-section (Figs. 3 and 4).
  • the new solution enables laser weldings to be reduced to a minimum, ie. to just six seams, as indicated by the reference numerals 8,9,10,11,12,13 in Fig. 1, in the case of a dry expansion evaporator, or even to just three seams, as indicated by the referen­ce numerals 14,15,16 in Fig. 2, in the case of a flood­ed-type evaporator.
  • Dry-expansion evaporators are fed with refrigerant fluid at a flow rate which ensures full vaporization of the same fluid on the outlet side of the evaporator; in Fig 1 the inlet or feeding side is indicated by the arrow A, while the outlet side is in­dicated by the arrow B.
  • Fluid strengthening seams 21 are most ad­vantageously made by resistance spot welding, having care to have the plate 7 (or both plates) provided with suitable indentations 22 (Fig. 3) as these can be directly obtained in the sheet metal during drawing of the same.
  • Such a construction also enables the thick­ness of the sheet metal to be reduced to a minimum, whi­le ensuring best dimensional stability of the evapora­tor under operational conditions.
  • channel 20 is preferably symmetrical to a centre line of the plate assembly 5 and also the laser weld­ing seams 14,15,16, being in the number of three, are symmetrical to the same centre line.
  • the low number of welding seams and the very close contiguity of the flow channels are such as to minimize that part of the evaporator surface which is not directly involved by the circulating refrigerant fluid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Laser Beam Processing (AREA)
EP88106676A 1987-05-05 1988-04-26 Evaporateur à plaques cannelé pour appareils frigorifiques Withdrawn EP0289915A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4571887 1987-05-05
IT8745718A IT1210380B (it) 1987-05-05 1987-05-05 Evaporatore a piastra canalizzata per apparecchi frigoriferi.

Publications (1)

Publication Number Publication Date
EP0289915A1 true EP0289915A1 (fr) 1988-11-09

Family

ID=11257641

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88106676A Withdrawn EP0289915A1 (fr) 1987-05-05 1988-04-26 Evaporateur à plaques cannelé pour appareils frigorifiques

Country Status (2)

Country Link
EP (1) EP0289915A1 (fr)
IT (1) IT1210380B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995031686A1 (fr) * 1994-05-13 1995-11-23 Apv Uk Plc. Dispositif echangeur de chaleur
EP0797064A2 (fr) * 1996-03-20 1997-09-24 T.D.A. TECNOLOGIE D'AUTOMAZIONE S.r.l. Elément thermorayonnant en tÔle d'acier déformée et procédé de fabrication
US5875838A (en) * 1994-12-23 1999-03-02 Btg International Inc. Plate heat exchanger
WO2001007854A1 (fr) * 1999-07-27 2001-02-01 Ziepack Echangeur de chaleur et module d'echange s'y rapportant
FR2797685A1 (fr) * 1999-08-17 2001-02-23 Mach Gudin Dispositif de refrigeration d'aliment
EP1285203A1 (fr) * 1999-12-14 2003-02-26 Rheem Australia PTY Limited Chauffe-eau et fabrication de composants de chauffe-eau
EP2445378A1 (fr) * 2009-06-25 2012-05-02 Carrier Corporation Présentoir réfrigéré
WO2024085259A1 (fr) * 2022-10-21 2024-04-25 株式会社神戸製鋼所 Procédé de production d'unité de régulation de température et unité de régulation de température

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109027432B (zh) * 2018-09-21 2023-08-18 浙江佛城制冷有限公司 高效节能蒸发器连接管总成及其制造方法

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2067208A (en) * 1934-05-28 1937-01-12 Gen Motors Corp Refrigerating apparatus
US2244475A (en) * 1938-03-29 1941-06-03 Raskin Walter Evaporator plate for refrigerated cabinets
FR872687A (fr) * 1941-01-22 1942-06-16 Froid Ind Et Douane Reunis évaporateur pour armoires frigorifiques et appareils analogues
US2626130A (en) * 1949-08-19 1953-01-20 Raskin Leon Heat exchanger device
GB873769A (en) * 1959-02-09 1961-07-26 Tranter Mfg Inc Improvements in or relating to heat transfer units
GB885101A (en) * 1958-07-10 1961-12-20 Continentale De Procedes De So Conduit for the circulation of fluids and method for producing the conduit
FR1320513A (fr) * 1961-04-25 1963-03-08 Schlatter Ag Installation pour la fabrication de corps creux
FR2076017A1 (en) * 1970-01-09 1971-10-15 Inst Elektroswarki Patona Welding sheet metal to form hollow bodies
FR2204788A1 (en) * 1972-10-30 1974-05-24 Tranter Mfg Inc Plate heat exchanger unit - made from two flat plates spot welded together in rhombus pattern
JPS5847590A (ja) * 1981-09-18 1983-03-19 Toshiba Corp レ−ザ−シ−ム溶接機
FR2566306A1 (fr) * 1984-06-26 1985-12-27 Brun Michel Procede de realisation d'echangeurs de chaleur par soudage laser
EP0173655A1 (fr) * 1984-08-20 1986-03-05 FIAT AUTO S.p.A. Procédé de soudage de tôles métalliques

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2067208A (en) * 1934-05-28 1937-01-12 Gen Motors Corp Refrigerating apparatus
US2244475A (en) * 1938-03-29 1941-06-03 Raskin Walter Evaporator plate for refrigerated cabinets
FR872687A (fr) * 1941-01-22 1942-06-16 Froid Ind Et Douane Reunis évaporateur pour armoires frigorifiques et appareils analogues
US2626130A (en) * 1949-08-19 1953-01-20 Raskin Leon Heat exchanger device
GB885101A (en) * 1958-07-10 1961-12-20 Continentale De Procedes De So Conduit for the circulation of fluids and method for producing the conduit
GB873769A (en) * 1959-02-09 1961-07-26 Tranter Mfg Inc Improvements in or relating to heat transfer units
FR1320513A (fr) * 1961-04-25 1963-03-08 Schlatter Ag Installation pour la fabrication de corps creux
FR2076017A1 (en) * 1970-01-09 1971-10-15 Inst Elektroswarki Patona Welding sheet metal to form hollow bodies
FR2204788A1 (en) * 1972-10-30 1974-05-24 Tranter Mfg Inc Plate heat exchanger unit - made from two flat plates spot welded together in rhombus pattern
JPS5847590A (ja) * 1981-09-18 1983-03-19 Toshiba Corp レ−ザ−シ−ム溶接機
FR2566306A1 (fr) * 1984-06-26 1985-12-27 Brun Michel Procede de realisation d'echangeurs de chaleur par soudage laser
EP0173655A1 (fr) * 1984-08-20 1986-03-05 FIAT AUTO S.p.A. Procédé de soudage de tôles métalliques

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 128 (M-220)[1273], 3rd June 1983; & JP-A-58 047 590 (TOKYO SHIBAURA DENKI K.K.) 19-03-1983 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995031686A1 (fr) * 1994-05-13 1995-11-23 Apv Uk Plc. Dispositif echangeur de chaleur
US5875838A (en) * 1994-12-23 1999-03-02 Btg International Inc. Plate heat exchanger
US6032470A (en) * 1994-12-23 2000-03-07 Btg International Inc. Plate heat exchanger
EP0797064A2 (fr) * 1996-03-20 1997-09-24 T.D.A. TECNOLOGIE D'AUTOMAZIONE S.r.l. Elément thermorayonnant en tÔle d'acier déformée et procédé de fabrication
EP0797064A3 (fr) * 1996-03-20 1998-11-04 T.D.A. TECNOLOGIE D'AUTOMAZIONE S.r.l. Elément thermorayonnant en tÔle d'acier déformée et procédé de fabrication
FR2797039A1 (fr) * 1999-07-27 2001-02-02 Ziepack Echangeur de chaleur en module d'echange s'y rapportant
WO2001007854A1 (fr) * 1999-07-27 2001-02-01 Ziepack Echangeur de chaleur et module d'echange s'y rapportant
US7044207B1 (en) 1999-07-27 2006-05-16 Zie Pack Heat exchanger and related exchange module
FR2797685A1 (fr) * 1999-08-17 2001-02-23 Mach Gudin Dispositif de refrigeration d'aliment
EP1285203A1 (fr) * 1999-12-14 2003-02-26 Rheem Australia PTY Limited Chauffe-eau et fabrication de composants de chauffe-eau
EP1285203A4 (fr) * 1999-12-14 2006-06-21 Rheem Australia Pty Ltd Chauffe-eau et fabrication de composants de chauffe-eau
EP2445378A1 (fr) * 2009-06-25 2012-05-02 Carrier Corporation Présentoir réfrigéré
EP2445378A4 (fr) * 2009-06-25 2015-01-07 Carrier Corp Présentoir réfrigéré
WO2024085259A1 (fr) * 2022-10-21 2024-04-25 株式会社神戸製鋼所 Procédé de production d'unité de régulation de température et unité de régulation de température

Also Published As

Publication number Publication date
IT8745718A0 (it) 1987-05-05
IT1210380B (it) 1989-09-14

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