EP0863374A2 - Gefäss mit festem Kältemittel für isothermische Behälter, insbesondere für den Warentransport mit überwachter Temperatur - Google Patents

Gefäss mit festem Kältemittel für isothermische Behälter, insbesondere für den Warentransport mit überwachter Temperatur Download PDF

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Publication number
EP0863374A2
EP0863374A2 EP98830085A EP98830085A EP0863374A2 EP 0863374 A2 EP0863374 A2 EP 0863374A2 EP 98830085 A EP98830085 A EP 98830085A EP 98830085 A EP98830085 A EP 98830085A EP 0863374 A2 EP0863374 A2 EP 0863374A2
Authority
EP
European Patent Office
Prior art keywords
cooling plate
drawer
reservoir according
solid refrigerant
section
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Withdrawn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
EP98830085A
Other languages
English (en)
French (fr)
Other versions
EP0863374A3 (de
Inventor
Giovanni Monetti
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.)
Monetti SpA
Original Assignee
Monetti 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 Monetti SpA filed Critical Monetti SpA
Publication of EP0863374A2 publication Critical patent/EP0863374A2/de
Publication of EP0863374A3 publication Critical patent/EP0863374A3/de
Withdrawn legal-status Critical Current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
    • F25D3/12—Devices using other cold materials; Devices using cold-storage bodies using solidified gases, e.g. carbon-dioxide snow
    • F25D3/125—Movable containers

Definitions

  • the present invention is related to solid refrigerant reservoirs intended to be fitted within isothermal containers, particularly for transportation and storage of products (for instance foodstuff) under controlled temperature.
  • reservoirs for instance known from European Patent applications EP-A-0337860 and EP-A-0631096, conventionally comprise a drawer of a generally parallelepipedal design having lateral walls, a lid and a bottom wall defining a cooling plate following sublimation of the solid refrigerant contained within the drawer.
  • EP-A-0631096 provides a system for varying and adjusting the amount of solid refrigerant (in particular CO 2 snow) introduced into the drawer, as a function of the requirements of the products for which the isothermal container equipped with the drawer is intended to be employed.
  • solid refrigerant in particular CO 2 snow
  • the object of the present invention is to overcome the above drawbacks, and more particularly to provide a solid refrigerant reservoir of the type set forth at the beginning designed in a simple, functional and cheap way so as to be immediately adapted to the above-disclosed different needs of use, without involving metering of the solid refrigerant, whose amount within the reservoir can thus be solely related to the desired operating life of the reservoir itself.
  • the object of the invention is to provide a solid refrigerant reservoir of the above-referenced type which is designed to be employed, without provision of any expedients outside of the reservoir itself, with isothermal containers indifferently intended for transportation and/or storage either of fresh or, respectively, deep-frozen products.
  • a further object of the present invention is to provide a solid refrigerant reservoir of the type set forth in the above, which can be immediately adapted to the cooling requirements of the products intended to be transported and/or stored within the isothermal container, following a simple and quick manual operation.
  • the bottom wall of the drawer comprises a high-thermal-exchange cooling plate and a thermally insulating structure arranged beneath said cooling plate and having at least one movable portion so as to vary the amount of outwardly exposure of said cooling plate.
  • the drawing which constitutes the solid refrigerant reservoir according to the invention embodies a shutter system which enables, by means of a greater or lower exposure of the cooling plate provided at the bottom of the drawer, to adjust the cooling performance thereof as a function of the user's need. Accordingly, control of the cooling by sublimation of the solid refrigerant contained within the drawer allows use thereof indifferently for isothermal containers designated to transportation and/or storage both of fresh and deep-frozen products.
  • the thermally insulating structure of the bottom wall of the drawer comprises a stationary section arranged in correspondence of a first portion of the cooling plate, and a movable section which is slidable relative to said stationary section, beneath a second portion of the cooling plate, between a closure end position and an open end position, in which said second portion of the cooling plate is completely covered and, respectively, completely exposed.
  • said slidable section can be positioned in any intermediate condition comprised between said end positions.
  • said second portion of the cooling plate is conveniently formed at the outside as a thermal dissipator. Accordingly in the partially or totally exposed condition of said second portion of the cooling plate, the cooling action due to sublimation of the solid refrigerant is made remarkably more efficient.
  • reference numeral 1 generally designates a reservoir according to the invention, intended to be partially or completely filled with a solid refrigerant R, and then to be fitted into the upper area of an isothermal container, for instance made as a wheeled closet, for transportation of fresh or deep-frozen products (namely foodstuff products).
  • the reservoir 1 is generally designed as a parallelepipedal-shaped drawer having two pairs of opposite lateral walls 2 and 3, a lid 4 and a bottom wall generally designated as 5.
  • the bottom wall 5 comprises a metal sheet 6, normally made of aluminium, providing a cooling plate following sublimation of the solid refrigerant R contained within the drawer 1, and ideally subdivided into a first and a second portions indicated as 6a, 6b, respectively.
  • the perimetral edge of the cooling plate 6 is sealingly fixed within the lower areas of the lateral walls 2, 3.
  • the first portion 6a of the cooling plate 6 rests upon a lowermost stationary section 7a of a thermally insulating structure 7 forming in one piece, further to the stationary section 7a, also the four lateral walls 2, 3 of the drawer 1.
  • the thermally insulating structure 7 may be formed, for instance, by outer and inner spaced-apart sheets made of polyethilene or like thermoplastic materials, with a polyurethanic or like material foam filler layer.
  • the section 7a and thus the first portion 6a of the cooling plate 6 extend over about one half of the entire bottom wall 5.
  • the other half of the cooling plate 6, i.e. the second portion 6b thereof, is thus located in correspondence of the area where the section 7a is absent.
  • the second portion 6b is provided with a number of parallel projecting fins 8 designed to build up a thermal dissipator.
  • the bottom wall 5 is completed by a movable section 7b, also having a thermally insulating structure and slidably mounted along longitudinal guide appendages 9 projecting from the two lateral walls 2.
  • the movable section 7b is thus slidable, immediately beneath the stationary section 7a, between completely closed and completely open end positions, shown in figures 4, 5 and in figures 6, 7, respectively.
  • the movable section 7b may be conveniently provided with a manually operable front handle 10, or with any other suitable system for displacement thereof.
  • the movable section 7b In the completely closed position shown in figures 4 and 5, the movable section 7b fully covers the second portion 6b of the cooling plate 6, while in the completely open position shown in figures 6 and 7 the movable section 7b overlaps the stationary section 7a, whereby the second portion 6b of the cooling plate 6, with the associated thermal dissipator constituted by the fins 8, is completely exposed to the outside.
  • the movable section 7b can be positioned in any intermediate configuration between the above disclosed end positions, for instance such as depicted in figure 1 in which the second portion 6b of the cooling plate 6 is partially exposed to the outside.
  • the lid 4 is normally made of metal, for instance of stainless steel, and can be provided with a series of through holes 11 in correspondence of which respective grids and associated filtering elements 12 may be applied.
  • the lid 4 can simply rest upon the upper edges of the lateral walls 2, 3, or it can be rigidly secured thereto.
  • the lid 4 may possibly be provided with a hinged portion which can be opened so as to enable access into the drawer 1, and may also be provided with a safety locking system, not shown in the drawings.
  • Reference numerals 13 designate outer support appendages projecting laterally of the two lateral walls 2 so as to allow slidable mounting of the drawer 1 along corresponding guides of an isothermal container, not shown in the drawing since of a conventional type.
  • the appendages 13 may be provided along the entire length of the drawer 1, or may be made as sectors according to the shown example.
  • a suitable solid refrigerant R is supplied into the drawer 1.
  • this solid refrigerant may be constituted by CO 2 snow fed in a liquid state into the drawer 1, which in this case shall be provided with a suitable injection nozzle not shown in the drawings, or it may consist of pieces or blocks of dry ice or other proper refrigerants, introduced from above into the drawer 1 after removing the cover 4 or after raising the hinged portion thereof, whenever provided. Then, after positioning the drawer 1 within the isothermal container, the movable section 7b of the bottom wall 5 shall be positioned in the condition corresponding to the requirements of use.
  • the movable section 7b shall be arranged in the closed position of figures 4 and 5, so as to minimize the cooling action performed by sublimation of the solid refrigerant.
  • the movable section 7b shall be positioned in the open condition shown in figures 6 and 7, so as to maximize the cooling effect carried out by sublimation of the solid refrigerant.
  • Intermediate conditions can be provided, even as a function of the amount and of characteristics of the solid refrigerant, by adjusting the position of the movable section 7b between the completely closed and completely open conditions.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Temperature (AREA)
EP98830085A 1997-03-05 1998-02-20 Gefäss mit festem Kältemittel für isothermische Behälter, insbesondere für den Warentransport mit überwachter Temperatur Withdrawn EP0863374A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO970179 1997-03-05
IT97TO000179A IT1291165B1 (it) 1997-03-05 1997-03-05 Recipiente di refrigerante solido per contenitori isotermici, particolarmente per il trasporto di prodotti a temperatura

Publications (2)

Publication Number Publication Date
EP0863374A2 true EP0863374A2 (de) 1998-09-09
EP0863374A3 EP0863374A3 (de) 1998-09-23

Family

ID=11415471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98830085A Withdrawn EP0863374A3 (de) 1997-03-05 1998-02-20 Gefäss mit festem Kältemittel für isothermische Behälter, insbesondere für den Warentransport mit überwachter Temperatur

Country Status (2)

Country Link
EP (1) EP0863374A3 (de)
IT (1) IT1291165B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2836543A1 (fr) * 2002-02-25 2003-08-29 Olivo Reservoir renforce pour compartiment cryogenique de conteneur isotherme
FR2839774A1 (fr) * 2002-05-17 2003-11-21 Olivo Reservoir cryogenique a diffusion adaptable pour conteneur isotherme
ITTO20090171A1 (it) * 2009-03-09 2010-09-09 Monetti Spa Modulo refrigerante per contenitori isotermici
WO2012056086A1 (en) * 2010-10-25 2012-05-03 Icebridge Oy A cooling solution in a trolley of an aeroplane
EP3244144A1 (de) 2016-05-10 2017-11-15 Bonetto S.r.l. Isothermischer behälter für den transport von verderblichen nahrungsmitteln
FR3058206A1 (fr) * 2016-10-31 2018-05-04 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Echangeur air/neige carbonique et procede de regulation d'un tel echangeur

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0337860A2 (de) 1988-04-08 1989-10-18 Carboxyque Francaise Isolier-Container mit Kältemittelbehälter und Verwendung beim Transport von frischen Produkten
EP0631096A1 (de) 1993-06-23 1994-12-28 Carboxyque Francaise Verfahren zur Konservierung von Waren bei niedrigen Temperaturen in einem isolierten Gehäuse, Vorrichtung zur Durchführung des Verfahrens, isoliertes Gehäuse und Behälter für solch ein Gehäuse

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1893483A (en) * 1931-01-05 1933-01-10 Joseph S Belt Refrigerating apparatus and method
FR995434A (fr) * 1945-03-02 1951-12-03 Perfectionnements aux procédés et aux dispositifs de réfrigération par la glace carbonique
FR1024493A (fr) * 1950-09-12 1953-04-01 Système de régulation de réfrigération, pour emballages ou chambres froides, refroidis au moyen d'un produit réfrigérant
US5363670A (en) * 1993-04-19 1994-11-15 Anthony Bartilucci Self-contained cooler/freezer apparatus
FR2752049B1 (fr) * 1996-07-30 1998-09-11 Olivo Conteneur isotherme avec reserve de frigories

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0337860A2 (de) 1988-04-08 1989-10-18 Carboxyque Francaise Isolier-Container mit Kältemittelbehälter und Verwendung beim Transport von frischen Produkten
EP0631096A1 (de) 1993-06-23 1994-12-28 Carboxyque Francaise Verfahren zur Konservierung von Waren bei niedrigen Temperaturen in einem isolierten Gehäuse, Vorrichtung zur Durchführung des Verfahrens, isoliertes Gehäuse und Behälter für solch ein Gehäuse

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2836543A1 (fr) * 2002-02-25 2003-08-29 Olivo Reservoir renforce pour compartiment cryogenique de conteneur isotherme
FR2839774A1 (fr) * 2002-05-17 2003-11-21 Olivo Reservoir cryogenique a diffusion adaptable pour conteneur isotherme
ITTO20090171A1 (it) * 2009-03-09 2010-09-09 Monetti Spa Modulo refrigerante per contenitori isotermici
WO2012056086A1 (en) * 2010-10-25 2012-05-03 Icebridge Oy A cooling solution in a trolley of an aeroplane
KR200477697Y1 (ko) * 2010-10-25 2015-07-10 아이스브릿지 오와이 냉각장치 유닛 및 이를 구비한 기내 서비스 카트
US9242732B2 (en) 2010-10-25 2016-01-26 Icebridge Oy Cooling solution in a trolley of an aeroplane
EP3244144A1 (de) 2016-05-10 2017-11-15 Bonetto S.r.l. Isothermischer behälter für den transport von verderblichen nahrungsmitteln
FR3058206A1 (fr) * 2016-10-31 2018-05-04 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Echangeur air/neige carbonique et procede de regulation d'un tel echangeur

Also Published As

Publication number Publication date
ITTO970179A1 (it) 1998-09-05
IT1291165B1 (it) 1998-12-29
EP0863374A3 (de) 1998-09-23

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