EP0866289A2 - A heat-exchanger such as a condenser and/or evaporator for refrigerating apparatus - Google Patents

A heat-exchanger such as a condenser and/or evaporator for refrigerating apparatus Download PDF

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Publication number
EP0866289A2
EP0866289A2 EP97203453A EP97203453A EP0866289A2 EP 0866289 A2 EP0866289 A2 EP 0866289A2 EP 97203453 A EP97203453 A EP 97203453A EP 97203453 A EP97203453 A EP 97203453A EP 0866289 A2 EP0866289 A2 EP 0866289A2
Authority
EP
European Patent Office
Prior art keywords
heat
coil
heat exchanger
exchanger
evaporator
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Withdrawn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
EP97203453A
Other languages
German (de)
French (fr)
Other versions
EP0866289A3 (en
Inventor
Henri Charcosset
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.)
D'electromenager Du Nord Selnor Ste
Original Assignee
D'electromenager Du Nord Selnor Ste
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 D'electromenager Du Nord Selnor Ste filed Critical D'electromenager Du Nord Selnor Ste
Publication of EP0866289A2 publication Critical patent/EP0866289A2/en
Publication of EP0866289A3 publication Critical patent/EP0866289A3/en
Withdrawn legal-status Critical Current

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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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/005—Devices using other cold materials; Devices using cold-storage bodies combined with heat exchangers
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/046—Condensers with refrigerant heat exchange tubes positioned inside or around a vessel containing water or pcm to cool the refrigerant gas
    • 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
    • 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
    • F25B39/04—Condensers

Definitions

  • the present invention relates to a heat-exchanger such as an evaporator and/or a condenser for refrigerating apparatus, of the type comprising a coil for a refrigerant fluid.
  • the present invention addresses the problem of providing an exchanger which improves the performance of the cycle and, at the same time, is structurally simple.
  • a heat exchanger of the type specified which is characterized in that it comprises a heat accumulator arranged for exchanging heat with the coil.
  • a heat exchanger which, in the embodiment shown, is an evaporator for refrigerating apparatus, such as a refrigerator, a freezer, a combination of the two, or the like, is generally indicated 1.
  • the heat exchanger 1 comprises a coil 2 through which a refrigerant fluid is intended to flow, and a heat accumulator 3 having a high heat capacity, arranged for exchanging heat with the coil 2.
  • the coil 2 is formed by a metal pipe 4 with end portions both indicated 5.
  • the heat accumulator 3 comprises a tank 6 formed by two metal sheets and, more precisely, by a flat sheet 7 and a substantially tray-shaped sheet 8 formed by drawing.
  • the sheets 7 and 8 are welded together along respective peripheral edges 9 and 10, so as to define a chamber 13 between respective facing inner faces 11 and 12.
  • the heat accumulator 3 also comprises a substance 14 having a high heat capacity, disposed in the chamber 13.
  • the substance 14 is a mixture of water and alcohol.
  • the coil 2 is placed inside the tank 6 and is fixed thereto by fixing means 15. In particular, the coil 2 is in contact with the inner face 11 of the flat sheet 7.
  • the fixing means 15 are advantageously constituted by two wall ducts, both indicated 16, which are formed in the tank 6 and through each of which a respective end portion 5 of the coil 2 extends.
  • Each wall duct 16 comprises a collar 17 formed by opposed portions of the peripheral edges of the sheet and, more precisely, by a flat portion 18 of the peripheral edge 9 of the sheet 7 and by a U-shaped portion 19 of the peripheral edge 10 of the sheet 8, deformed by drawing.
  • the portions 18 and 19 are clamped tightly onto the end portions 5 so as to hold them firmly and consequently to hold the coil firmly inside the tank.
  • Weld material 30 is preferably provided between the portions 18 and 19, for example, by braze welding to ensure that the wall duct is leaktight.
  • the main advantage of the heat-exchanger according to the present invention lies in the fact that it improves the performance of the cycle.
  • the heat exchanger according to the invention is of extremely simple construction, which is no small advantage for an item which has to be produced on a large or very large scale.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

A heat-exchanger (1) such as an evaporator and/or a condenser for refrigerating apparatus which achieves a good performance of the cycle and, at the same time, is of simple construction comprises a coil (2) for a refrigerant fluid and a heat accumulator arranged for exchanging heat (3) with the coil (2).

Description

The present invention relates to a heat-exchanger such as an evaporator and/or a condenser for refrigerating apparatus, of the type comprising a coil for a refrigerant fluid.
The present invention addresses the problem of providing an exchanger which improves the performance of the cycle and, at the same time, is structurally simple.
This problem is solved by a heat exchanger of the type specified which is characterized in that it comprises a heat accumulator arranged for exchanging heat with the coil.
Further characteristics and the advantages of the heat-exchanger according to the present invention will become clear from the following description of an embodiment thereof, given by way of non-limiting example with reference to the appended drawings, in which:
  • Figure 1 is partially-sectioned, perspective view of a heat exchanger according to the invention, and
  • Figure 2 is a section taken on the line II-II through the heat-exchanger of Figure 1.
    • With reference to the appended drawings, a heat exchanger which, in the embodiment shown, is an evaporator for refrigerating apparatus, such as a refrigerator, a freezer, a combination of the two, or the like, is generally indicated 1.
    The heat exchanger 1 comprises a coil 2 through which a refrigerant fluid is intended to flow, and a heat accumulator 3 having a high heat capacity, arranged for exchanging heat with the coil 2.
    The coil 2 is formed by a metal pipe 4 with end portions both indicated 5.
    The heat accumulator 3 comprises a tank 6 formed by two metal sheets and, more precisely, by a flat sheet 7 and a substantially tray-shaped sheet 8 formed by drawing. The sheets 7 and 8 are welded together along respective peripheral edges 9 and 10, so as to define a chamber 13 between respective facing inner faces 11 and 12. The heat accumulator 3 also comprises a substance 14 having a high heat capacity, disposed in the chamber 13. In the embodiment described, the substance 14 is a mixture of water and alcohol.
    The coil 2 is placed inside the tank 6 and is fixed thereto by fixing means 15. In particular, the coil 2 is in contact with the inner face 11 of the flat sheet 7.
    The fixing means 15 are advantageously constituted by two wall ducts, both indicated 16, which are formed in the tank 6 and through each of which a respective end portion 5 of the coil 2 extends.
    Each wall duct 16 comprises a collar 17 formed by opposed portions of the peripheral edges of the sheet and, more precisely, by a flat portion 18 of the peripheral edge 9 of the sheet 7 and by a U-shaped portion 19 of the peripheral edge 10 of the sheet 8, deformed by drawing.
    The portions 18 and 19 are clamped tightly onto the end portions 5 so as to hold them firmly and consequently to hold the coil firmly inside the tank.
    Weld material 30 is preferably provided between the portions 18 and 19, for example, by braze welding to ensure that the wall duct is leaktight.
    The main advantage of the heat-exchanger according to the present invention lies in the fact that it improves the performance of the cycle.
    Moreover, there is a particularly enhanced exchange of heat between the heat accumulator and the coil by virtue of the fact that the coil is substantially entirely immersed in the substance having a high heat capacity, contained in the tank.
    Moreover, it should be added that, at the same time, the heat exchanger according to the invention is of extremely simple construction, which is no small advantage for an item which has to be produced on a large or very large scale.
    Naturally, in order to satisfy contingent and specific requirements, an expert in the art may apply to the above-described heat exchanger many modifications and variations all of which, however, are included within the scope of protection of the invention as defined by the following claims.

    Claims (7)

    1. A heat exchanger (1) such as an evaporator and/or a condenser for refrigerating apparatus, of the type comprising a coil (2) for a refrigerant fluid, characterized in that it comprises a heat accumulator (3) arranged for exchanging heat with the coil (2).
    2. A heat exchanger (1) according to Claim 1, characterized in that the heat accumulator (3) comprises a tank (6) formed by two metal sheets (7, 8) of which at least one (8) is deformed by drawing and which have respective peripheral edges (9, 10) welded together and defining a chamber (13), and a substance (14) having a high heat capacity and disposed in the chamber (13).
    3. A heat exchanger (1) according to Claim 2, characterized in that the coil (2) is positioned inside the tank (6) and is fixed thereto by fixing means (15).
    4. A heat exchanger (1) according to Claim 3, characterized in that the fixing means (15) are constituted by at least one wall duct (16) which is formed in the tank (6) and through which an end portion (5) of the coil (2) extends.
    5. A heat exchanger (1) according to Claim 4, characterized in that the wall duct (16) comprises a collar (17) formed by opposed portions (18, 19) of the peripheral edges (9, 10) of the sheets (7, 8).
    6. A heat exchanger (1) according to Claim 5, characterized in that the portion (18) of the peripheral edge (9) of one sheet (7) is flat and that the portion (19) of the peripheral edge (10) of the other sheet (8) is U-shaped.
    7. A heat exchanger (1) according to Claim 6, characterized in that it comprises weld material (20) disposed between the portions (18, 19).
    EP97203453A 1997-03-18 1997-11-07 A heat-exchanger such as a condenser and/or evaporator for refrigerating apparatus Withdrawn EP0866289A3 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    ITMI970619 1997-03-18
    ITMI970619 IT1290117B1 (en) 1997-03-18 1997-03-18 HEAT EXCHANGER AS A CONDENSER AND / OR EVAPORATOR FOR A COLD GENERATOR

    Publications (2)

    Publication Number Publication Date
    EP0866289A2 true EP0866289A2 (en) 1998-09-23
    EP0866289A3 EP0866289A3 (en) 1999-12-22

    Family

    ID=11376487

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP97203453A Withdrawn EP0866289A3 (en) 1997-03-18 1997-11-07 A heat-exchanger such as a condenser and/or evaporator for refrigerating apparatus

    Country Status (2)

    Country Link
    EP (1) EP0866289A3 (en)
    IT (1) IT1290117B1 (en)

    Cited By (9)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1010955A1 (en) * 1998-12-18 2000-06-21 OCEAN S.p.A. An evaporator for a refrigerator or the like
    EP1229293A1 (en) * 2001-02-02 2002-08-07 Whirlpool Corporation Refrigeration circuit condenser particularly for refrigerators, freezers and similar domestic appliances
    KR100348992B1 (en) * 2000-03-24 2002-08-17 진성냉기산업주식회사 Cool fluid accumulator-type vaporizer
    WO2002066911A1 (en) * 2001-02-16 2002-08-29 Multibrás S.A. Eletrodomésticos Condenser for a refrigeration appliance
    EP1606566A1 (en) * 2002-12-04 2005-12-21 Hewlett-Packard Development Company, L.P. Cooling system with evaporators distributed in parallel
    GB2449522A (en) * 2007-05-22 2008-11-26 4Energy Ltd Temperature controlled equipment cabinet comprising an absorption refrigerator system with an evaporator pipe located within a fluid containing enclosure
    WO2009144067A1 (en) * 2008-04-17 2009-12-03 BSH Bosch und Siemens Hausgeräte GmbH Refrigerator, in particular household refrigerator, comprising a condenser with heat storage elements
    DE102012017345A1 (en) * 2012-08-29 2014-05-15 Johannes Georg Mehlig Refrigerator or freezer for use in household, has evaporator and condenser are located in front of rear wall in water tanks, and antifreeze is added to water tanks such that water remains liquid even at low evaporation temperatures
    US10871315B2 (en) 2016-03-16 2020-12-22 Liebherr-Hausgerate Lienz Gmbh Refrigerant circuit for a cooling and/or freezing appliance

    Family Cites Families (8)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US1706891A (en) * 1927-04-26 1929-03-26 Kulair Corp Evaporator element
    US2014703A (en) * 1932-03-23 1935-09-17 Fedders Mfg Co Inc Refrigerating apparatus
    US2405432A (en) * 1939-03-20 1946-08-06 Dole Refrigerating Co Cooling apparatus
    US2560453A (en) * 1946-02-09 1951-07-10 Dole Refrigerating Co Heat exchange unit for refrigeration
    BE514736A (en) * 1951-10-18
    IT1021238B (en) * 1974-09-10 1978-01-30 Vitco Patens Ag EUTECTIC EVAPORATOR WITH FINNED COIL
    JPS623659Y2 (en) * 1981-01-19 1987-01-27
    US5172567A (en) * 1991-05-29 1992-12-22 Thermo King Corporation Eutectic beams for use in refrigeration

    Non-Patent Citations (1)

    * Cited by examiner, † Cited by third party
    Title
    None

    Cited By (10)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1010955A1 (en) * 1998-12-18 2000-06-21 OCEAN S.p.A. An evaporator for a refrigerator or the like
    KR100348992B1 (en) * 2000-03-24 2002-08-17 진성냉기산업주식회사 Cool fluid accumulator-type vaporizer
    EP1229293A1 (en) * 2001-02-02 2002-08-07 Whirlpool Corporation Refrigeration circuit condenser particularly for refrigerators, freezers and similar domestic appliances
    WO2002066911A1 (en) * 2001-02-16 2002-08-29 Multibrás S.A. Eletrodomésticos Condenser for a refrigeration appliance
    EP1606566A1 (en) * 2002-12-04 2005-12-21 Hewlett-Packard Development Company, L.P. Cooling system with evaporators distributed in parallel
    GB2449522A (en) * 2007-05-22 2008-11-26 4Energy Ltd Temperature controlled equipment cabinet comprising an absorption refrigerator system with an evaporator pipe located within a fluid containing enclosure
    WO2008142414A1 (en) * 2007-05-22 2008-11-27 4Energy Ltd. Condenser heatsink
    WO2009144067A1 (en) * 2008-04-17 2009-12-03 BSH Bosch und Siemens Hausgeräte GmbH Refrigerator, in particular household refrigerator, comprising a condenser with heat storage elements
    DE102012017345A1 (en) * 2012-08-29 2014-05-15 Johannes Georg Mehlig Refrigerator or freezer for use in household, has evaporator and condenser are located in front of rear wall in water tanks, and antifreeze is added to water tanks such that water remains liquid even at low evaporation temperatures
    US10871315B2 (en) 2016-03-16 2020-12-22 Liebherr-Hausgerate Lienz Gmbh Refrigerant circuit for a cooling and/or freezing appliance

    Also Published As

    Publication number Publication date
    IT1290117B1 (en) 1998-10-19
    EP0866289A3 (en) 1999-12-22
    ITMI970619A1 (en) 1998-09-18

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