EP0167978A2 - Saugrohrwärmetauscher und Verfahren zur Herstellung - Google Patents

Saugrohrwärmetauscher und Verfahren zur Herstellung Download PDF

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Publication number
EP0167978A2
EP0167978A2 EP85108234A EP85108234A EP0167978A2 EP 0167978 A2 EP0167978 A2 EP 0167978A2 EP 85108234 A EP85108234 A EP 85108234A EP 85108234 A EP85108234 A EP 85108234A EP 0167978 A2 EP0167978 A2 EP 0167978A2
Authority
EP
European Patent Office
Prior art keywords
tube
suction
heat exchanger
suction tube
capillary tube
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Withdrawn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
EP85108234A
Other languages
English (en)
French (fr)
Other versions
EP0167978A3 (de
Inventor
Edvin List Clausen
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.)
Norsk Hydro ASA
Original Assignee
Norsk Hydro ASA
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 Norsk Hydro ASA filed Critical Norsk Hydro ASA
Publication of EP0167978A2 publication Critical patent/EP0167978A2/de
Publication of EP0167978A3 publication Critical patent/EP0167978A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/37—Capillary tubes
    • 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
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/052—Compression system with heat exchange between particular parts of the system between the capillary tube and another part of the refrigeration cycle
    • 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
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/054—Compression system with heat exchange between particular parts of the system between the suction tube of the compressor and another part of the cycle
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters

Definitions

  • the present ivention concerns a heat exchanger of the so-called suction tube type for locating in the cooling circuit of a refrigerator/freezer in the compressor's suction line, and furthermore a method for manufacturing such heat exchangers.
  • Heat exchangers of this type incorporated into cooling systems in conjunction with a compressor, comprise a capillary tube connected to the system's suction line.
  • the purpose of this arrangement is that heat from the condensing fluid in the capillary tube is transferred to vapor drawn into the compressor through the suction tube. In this way, the efficiency of the cooling system is increased while simultaneously preventing the intake of unevaporated fluid into the compressor.
  • the object of the present invention is therefore to provide a heat exchanger that is cheaper to manufacture, yet qualitatively on a par with the heat exchangers of this type hitherto known and used.
  • Another object of the present invention is to provide a method for the fabrication of heat exchangers which provides a simple, effective, and mechanically/thermally reliable joint between the tubes in the heat exchanger. This is achieved by the heat exchanger and the fabrication method as stated in the characterizing parts of the patent claims 1 and 4 of the present application.
  • the suction line is given an oval cross-section, which is transformed to an essentially circular cross-section in the joining process of plastic deformation.
  • a heat exchanger (8) is shown in more details, comprising a suction line (1) and a capillary tube (2) inserted and fastened in the groove (3) in the suction tube.
  • Two standard tube fittings (9) connect the ends of the suction tube to the cooling circuit. (Only one of the fittings is shown in the figure.)
  • Fig, 3 which shows a vertical cross-section of the heat exchanger at line A-A on Fig. 2, illustrates the superior joint between the suction tube (1) and the capillary tube (2), where up to 80% of the surface of the capillary tube is engaged, and thereby in heat-transferring contact with the walls of the suction line through the inwardly protruding groove (3).
  • Fig. 4 shows both tubes in a vertical cross-section prior to the joining operation.
  • the suction line (1) is illustrated in the preferred embodiment with an oval (elliptical) cross-section and an inwardly projecting groove (3) forming a recess in the tube's circumference.
  • the cross-section of the groove and the diameter of the capillary tube are dimensioned to facilitate insertion of the tube into the groove.
  • the subsequent plastic deformation of the suction line which is transformed to an essentially circular cross-section, results in the walls (32) of the groove being elongated around the perimeter of the tube, partly enclosing the capillary tube.
  • FIG. 5 Another advantageous heat exchanger embodiment (8) according to the present invention is shown in Fig. 5.
  • the integrated groove (3) in the suction line (1) is formed as a projection protruding out from the surface of the tube.
  • the suction tube has an essentially circular cross-section.
  • the plastic deformation occuring in the process of joining the tubes is limited in this case to the deformation of the walls of the groove (32), which encompass the capillary tube after joining, resulting in a solid, reliable mechanical and heat exchanging contact between the tubes.
  • Fig. 7 shows still another embodiment of the suction tube ( 1 ) having an essentially circular cross-section with an inwardly protruding groove (3). Free surface of the capillary tube inserted and fastened in such a groove will achieve a direct contact with the circulating fluidum in the suction tube and result in further improvement of the heat transfer characteristic.
  • the heat exchanger according to the invention is not limited to the preferred embodiments discussed above and illustrated in the figures. Different requirements as to heat exchanging capacity, compact design of the cooling system, etc., may call for the incorporation of more than one capillary tube per suction line, for instance without excluding this variant from the scope of the present invention.
  • both the suction line and the capillary tube may be fabricated of aluminium, since neither the design nor the fabrication of heat exchangers according to the invention raise any limits on the choice of materials.
  • aluminium applied as construction material provides obvious advantages in the form of weight reduction and less problems associated with connections and corrosion in the cooling circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Saccharide Compounds (AREA)
  • Seasonings (AREA)
EP85108234A 1984-07-06 1985-07-03 Saugrohrwärmetauscher und Verfahren zur Herstellung Withdrawn EP0167978A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO842755 1984-07-06
NO842755A NO155067C (no) 1984-07-06 1984-07-06 Sugeroersvarmeveksler og fremgangsmaate til fremstilling av samme.

Publications (2)

Publication Number Publication Date
EP0167978A2 true EP0167978A2 (de) 1986-01-15
EP0167978A3 EP0167978A3 (de) 1986-06-11

Family

ID=19887755

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85108234A Withdrawn EP0167978A3 (de) 1984-07-06 1985-07-03 Saugrohrwärmetauscher und Verfahren zur Herstellung

Country Status (3)

Country Link
EP (1) EP0167978A3 (de)
DK (1) DK308485A (de)
NO (1) NO155067C (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0258040A1 (de) * 1986-08-28 1988-03-02 Sumitomo Chemical Company, Limited Polyamid enthaltende thermoplastische Harzzusammensetzung
EP0749892A1 (de) * 1995-05-26 1996-12-27 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Träger einer Aufbaustruktur eines Fahrzeuges und Verfahren zu dessen Herstellung
US7243499B2 (en) * 2004-08-16 2007-07-17 Parker Hannifin Corporation Refrigeration capillary tube inside suction line assembly
CN102313403A (zh) * 2011-09-13 2012-01-11 海尔集团公司 蒸发器总成、制冷回路系统及制冷设备
CN103673422A (zh) * 2013-12-14 2014-03-26 广东奥马电器股份有限公司 一种节能回气管组件、加工方法及模具
CN107178935A (zh) * 2016-03-11 2017-09-19 福特全球技术公司 嵌套式暖通空调管线
US9821420B2 (en) 2014-01-16 2017-11-21 Whirlpool Corporation Method of forming a refrigeration heat exchanger
CN107806726A (zh) * 2017-10-19 2018-03-16 合肥华凌股份有限公司 干燥过滤器、回气管组件及制冷设备
DE102017110706A1 (de) * 2017-05-17 2018-11-22 Miele & Cie. Kg Drosselvorrichtung für eine Wärmepumpe und Wärmepumpe mit einer Drosselvorrichtung
JP2020186887A (ja) * 2019-05-17 2020-11-19 アクア株式会社 冷蔵庫

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112696857A (zh) * 2020-12-28 2021-04-23 南京祥斯知商贸有限公司 一种节能冰箱

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415243A (en) * 1943-10-20 1947-02-04 Bohn Aluminium & Brass Corp Refrigeration apparatus and method of making same
US2687626A (en) * 1952-02-16 1954-08-31 Bohn Aluminium & Brass Corp Heat exchanger having open-sided bore superimposed on closed bore
US3448798A (en) * 1967-01-26 1969-06-10 Wakefield Eng Inc Heat transfer apparatus
CA1106628A (en) * 1976-10-27 1981-08-11 Robert B. Gelbard High efficiency heat exchanger for refrigeration suction line/capillary tube assembly
IT8253373V0 (it) * 1982-06-02 1982-06-02 Indesit Circuito frigorifero del tipo con capillare di espansione e ciclo a recupero termico

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0258040A1 (de) * 1986-08-28 1988-03-02 Sumitomo Chemical Company, Limited Polyamid enthaltende thermoplastische Harzzusammensetzung
EP0749892A1 (de) * 1995-05-26 1996-12-27 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Träger einer Aufbaustruktur eines Fahrzeuges und Verfahren zu dessen Herstellung
US5839777A (en) * 1995-05-26 1998-11-24 Dr. Ing. H.C.F. Porsche Ag Support of a body structure of a vehicle and process for manufacturing same
US7243499B2 (en) * 2004-08-16 2007-07-17 Parker Hannifin Corporation Refrigeration capillary tube inside suction line assembly
CN102313403A (zh) * 2011-09-13 2012-01-11 海尔集团公司 蒸发器总成、制冷回路系统及制冷设备
CN103673422A (zh) * 2013-12-14 2014-03-26 广东奥马电器股份有限公司 一种节能回气管组件、加工方法及模具
US9821420B2 (en) 2014-01-16 2017-11-21 Whirlpool Corporation Method of forming a refrigeration heat exchanger
CN107178935A (zh) * 2016-03-11 2017-09-19 福特全球技术公司 嵌套式暖通空调管线
DE102017110706A1 (de) * 2017-05-17 2018-11-22 Miele & Cie. Kg Drosselvorrichtung für eine Wärmepumpe und Wärmepumpe mit einer Drosselvorrichtung
CN107806726A (zh) * 2017-10-19 2018-03-16 合肥华凌股份有限公司 干燥过滤器、回气管组件及制冷设备
JP2020186887A (ja) * 2019-05-17 2020-11-19 アクア株式会社 冷蔵庫

Also Published As

Publication number Publication date
EP0167978A3 (de) 1986-06-11
NO155067C (no) 1987-02-04
NO155067B (no) 1986-10-27
DK308485A (da) 1986-01-07
NO842755L (no) 1986-01-07
DK308485D0 (da) 1985-07-05

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Inventor name: CLAUSEN, EDVIN LIST