EP0283634A1 - Kältespeicher mit eutektischer Lösung - Google Patents

Kältespeicher mit eutektischer Lösung Download PDF

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Publication number
EP0283634A1
EP0283634A1 EP87830470A EP87830470A EP0283634A1 EP 0283634 A1 EP0283634 A1 EP 0283634A1 EP 87830470 A EP87830470 A EP 87830470A EP 87830470 A EP87830470 A EP 87830470A EP 0283634 A1 EP0283634 A1 EP 0283634A1
Authority
EP
European Patent Office
Prior art keywords
case
accumulator
heat exchanger
accumulator according
eutectic solution
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.)
Granted
Application number
EP87830470A
Other languages
English (en)
French (fr)
Other versions
EP0283634B1 (de
Inventor
Raffaele De Peverelli
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.)
FRIGOTECNICA INDUSTRIALE CHIAVENNA SpA
Original Assignee
FRIGOTECNICA INDUSTRIALE CHIAVENNA 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 FRIGOTECNICA INDUSTRIALE CHIAVENNA SpA filed Critical FRIGOTECNICA INDUSTRIALE CHIAVENNA SpA
Priority to AT87830470T priority Critical patent/ATE59898T1/de
Publication of EP0283634A1 publication Critical patent/EP0283634A1/de
Application granted granted Critical
Publication of EP0283634B1 publication Critical patent/EP0283634B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • 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

Definitions

  • This invention relates to a cold accumulator of the type which comprises a tubular case containing an eutectic solution that will freeze at a preset temperature, a heat exchanger extending within said case for freezing said eutectic solution, and a means of supporting said heat exchanger in said case.
  • Cold accumulators of this type are widely employed as refrigerating sets inside refrigerated vans. For this purpose, a plurality of such accumulators are suspended from the ceiling or the walls of a van. With the van inoperative, such as overnight, the eutectic solution contained in each cold accumulator would be frozen by connecting the heat exchanger to a refrigerating unit. The cold thus stored in the accumulators is then released at a low rate to refrigerate the van.
  • a basic problem with such vans is that of holding down the weight of the installations provided to refrigerate the products carried.
  • Weight in fact, penalizes a van payload, and is tied to several factors, among which the weight of the accumulators themselves and the weight of their mounts, which must be incorporated to the van load-bearing structure.
  • An exemplary cold accumulator of the type mentioned above is that disclosed in European Patent No. 61697, filed on March 23, 1982.
  • This prior accumulator comprises a tubular case made of a plastic material with a rectangular cross-section shape and having an eutectic solution with a set freezing temperature.
  • the accumulator length in the longitudinal direction is quite substantial (up to six meters long) compared to its cross dimension. Furthermore, it has a curtailed weight, thanks also to the case being formed from a plastics.
  • Accumulators of this kind are subjected to a variety of different stresses, among which static, dynamic, and thermal stresses.
  • the latter cost factor includes, inter alia, connection of the heat exchangers in the individual accumulators to a refrigeration set arranged to freeze the eutectic solution.
  • the problem underlying this invention is that of providing a cold accumulator so structured as to overcome all of the drawbacks affecting the cited prior art.
  • the solutive idea of this problem is that of discharging a significant quota of the mechanical stresses affecting the accumulator to a metal beam provided on the case interior.
  • Accumulators embodying this invention show to be easily handled and to afford long-term reliability. Further, it would become possible to provide larger size accumulators, so as to decrease, over the prior art, the number of accumulators required to achieve a sought thermal capacity, with attendant reduction in the assembling cost and cost for connecting the heat exchangers to the refrigeration unit.
  • an accumulator of the type specified hereinabove being characterized in that said mounts comprise a tubular metal beam arranged to extend substantially coaxially within said case and being tied to at least two opposed walls thereof.
  • the numeral 1 designates comprehensively a cold accumulator according to this invention.
  • the accumulator 1 comprises a tubular case 2 which is extruded from a plastic material to a substantially rectangular cross-section configuration.
  • the case 2 is closed at opposed ends by end elements 6,7.
  • the element 6 is formed with a filling port closed removably by a screw-on cap 9.
  • the heat exchange tube 12 is bent into a "U" with two legs 12a,b and extends longitudinally within the case 2.
  • the elevations 15 provide support for and guide a metal beam 16 extending coaxially with the case 2 along the entire length thereof.
  • the beam 16 has opposed ends abutting the end elements 6,7.
  • Said beam 16 is constructed by welding from two perforated sheet metal shells 16a,b of omega-like shape which are laid with facing concavities and have corresponding wings 17 mating with each other.
  • the two shells 16a,b are welded along the wings 17.
  • the beam 16 encloses and supports the heat exchange tube 12.
  • the two legs 12a,b of the latter are held firmly against the walls of the beam 16 by means of a plurality of supporting members 18 lying at pitch intervals along the length direction of the beam 16, inside it.
  • Said supporting members 18 are formed with two opposed seats 19 for a corresponding leg of the heat exchange tube 12, and with two opposed lugs 20 acting on the major walls of the beam 16 to hold them pressed against the corresponding major walls 2a, 2b of the case 2 to thereby discharge on the beam 16 all the stresses to which the case 2 is subjected.
  • the beam 16 serves, on the one side, to stiffen the structure of the cold accumulator and support the heat exchange tube 12 while increasing, on the other side, the heat exchange surface area of the latter.
  • the cold accumulator of this invention operates as follows.
  • An eutectic solution is introduced into the case 2 through the cap 9.
  • Said case would preferably be provided transparent for the purpose of checking the level of the eutectic solution therein.
  • the beam will also aid in improving the transfer of heat required to thoroughly freeze the eutectic solution.
  • the accumulator 1 would be freezed on the spot, while suspended from the ceiling of a refrigerated van.
  • the refrigerating capacity of the accumulator 1 is a function both of the type of the eutectic solution employed, specifically of its freezing temperature, and of the volume of the solution contained in the case 2, that is of the physical dimensions of the case, as well as of the outside surface area of the case 2 intended for heat exchange with the refrigerated van interior space.
  • the ratio of the outer heat transfer surface area of the case 2 to the amount of eutectic solution contained therein will govern the refrigeration output capacity of the accumulator.
  • the beam 16 imparts the accumulator 1 with significant rigidity in both the lengthwise and transverse directions thereof, it becomes possible to optimize the aforesaid parameters to suit the refrigerating capacity demand. Accordingly, the number of the required accumulators to provide a sought thermal capacity can be reduced by increasing their size. It also becomes possible to reduce the number of the mounts to be distributed along the longitudinal extent of the accumulator 1 in order to secure its case to the van ceiling.
  • a bank of accumulators according to this invention will include a smaller number of accumulators, each supported by a lesser number of mounts than an accumulator bank constructed in accordance with the prior art.
  • the cost of an installed accumulator bank will therefore be generally lower.
  • the structure of this accumulator can be easily assembled. Firstly, the heat exchange tube 12 is provided with its mounts 18 within either shell 16a,b of the beam 16. Then, the other shell is superimposed with the wings 17 in mating relationship.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Lubricants (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
EP87830470A 1987-03-19 1987-12-29 Kältespeicher mit eutektischer Lösung Expired - Lifetime EP0283634B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87830470T ATE59898T1 (de) 1987-03-19 1987-12-29 Kaeltespeicher mit eutektischer loesung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1977087 1987-03-19
IT19770/87A IT1203841B (it) 1987-03-19 1987-03-19 Accumulatore di frigorie a soluzione eutettica

Publications (2)

Publication Number Publication Date
EP0283634A1 true EP0283634A1 (de) 1988-09-28
EP0283634B1 EP0283634B1 (de) 1991-01-09

Family

ID=11161082

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87830470A Expired - Lifetime EP0283634B1 (de) 1987-03-19 1987-12-29 Kältespeicher mit eutektischer Lösung

Country Status (5)

Country Link
EP (1) EP0283634B1 (de)
AT (1) ATE59898T1 (de)
DE (1) DE3767301D1 (de)
ES (1) ES2021754B3 (de)
IT (1) IT1203841B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0520822A1 (de) * 1991-06-28 1992-12-30 Thermo King Corporation Kältespeicher mit eutektischer Lösung und dessen Herstellungsverfahren
GB2327751A (en) * 1997-07-23 1999-02-03 Zafer Muhittin Ure Thermal storage
IT201700088160A1 (it) * 2017-08-01 2019-02-01 Frigotecnica Ind Chiavenna Spa Ovvero In Forma Abbreviata Fic Spa Tubo eutettico, particolarmente per la refrigerazione delle celle di furgoni frigoriferi.

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB272852A (en) * 1926-06-21 1928-06-18 Reuben Nicholas Trane Improvements in or relating to radiators
US1775706A (en) * 1926-06-19 1930-09-16 Reuben N Trane Radiator
US2338016A (en) * 1941-11-27 1943-12-28 Vassiliou Trifon Heat exchanger
US2399484A (en) * 1943-12-27 1946-04-30 American Loeomotive Company Heat exchanger
US2656157A (en) * 1950-02-16 1953-10-20 Eugene W Wasielewski Heat transfer element supported against external or internal pressures
FR1148310A (fr) * 1955-05-03 1957-12-06 Svenska Flaektfabriken Ab Réchauffeur d'air
FR2405453A1 (fr) * 1977-10-10 1979-05-04 Bretagne Atel Chantiers Procede de montage de faisceaux de tubes ailetes en tiroirs dissociables de l'enveloppe d'un echangeur thermique
EP0061697A1 (de) * 1981-03-26 1982-10-06 Kunststoff- und Kältetechnik Grosskopf GmbH Kältespeicherelement, Halterungen und Luftregellamellen dafür
EP0213339A1 (de) * 1985-08-31 1987-03-11 Sütrak Transportkälte Gesellschaft Mit Beschränkter Haftung Kältespeicherelement für Kühlfahrzeuge

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1775706A (en) * 1926-06-19 1930-09-16 Reuben N Trane Radiator
GB272852A (en) * 1926-06-21 1928-06-18 Reuben Nicholas Trane Improvements in or relating to radiators
US2338016A (en) * 1941-11-27 1943-12-28 Vassiliou Trifon Heat exchanger
US2399484A (en) * 1943-12-27 1946-04-30 American Loeomotive Company Heat exchanger
US2656157A (en) * 1950-02-16 1953-10-20 Eugene W Wasielewski Heat transfer element supported against external or internal pressures
FR1148310A (fr) * 1955-05-03 1957-12-06 Svenska Flaektfabriken Ab Réchauffeur d'air
FR2405453A1 (fr) * 1977-10-10 1979-05-04 Bretagne Atel Chantiers Procede de montage de faisceaux de tubes ailetes en tiroirs dissociables de l'enveloppe d'un echangeur thermique
EP0061697A1 (de) * 1981-03-26 1982-10-06 Kunststoff- und Kältetechnik Grosskopf GmbH Kältespeicherelement, Halterungen und Luftregellamellen dafür
EP0213339A1 (de) * 1985-08-31 1987-03-11 Sütrak Transportkälte Gesellschaft Mit Beschränkter Haftung Kältespeicherelement für Kühlfahrzeuge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0520822A1 (de) * 1991-06-28 1992-12-30 Thermo King Corporation Kältespeicher mit eutektischer Lösung und dessen Herstellungsverfahren
GB2327751A (en) * 1997-07-23 1999-02-03 Zafer Muhittin Ure Thermal storage
IT201700088160A1 (it) * 2017-08-01 2019-02-01 Frigotecnica Ind Chiavenna Spa Ovvero In Forma Abbreviata Fic Spa Tubo eutettico, particolarmente per la refrigerazione delle celle di furgoni frigoriferi.

Also Published As

Publication number Publication date
IT8719770A0 (it) 1987-03-19
EP0283634B1 (de) 1991-01-09
ES2021754B3 (es) 1991-11-16
IT1203841B (it) 1989-02-23
ATE59898T1 (de) 1991-01-15
DE3767301D1 (de) 1991-02-14

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