WO2001077596A1 - Appareil de congelation d'un liquide refrigerant dans la chambre d'un refrigerateur - Google Patents

Appareil de congelation d'un liquide refrigerant dans la chambre d'un refrigerateur Download PDF

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Publication number
WO2001077596A1
WO2001077596A1 PCT/SE2001/000760 SE0100760W WO0177596A1 WO 2001077596 A1 WO2001077596 A1 WO 2001077596A1 SE 0100760 W SE0100760 W SE 0100760W WO 0177596 A1 WO0177596 A1 WO 0177596A1
Authority
WO
WIPO (PCT)
Prior art keywords
jets
ducts
layer
storage space
cooling battery
Prior art date
Application number
PCT/SE2001/000760
Other languages
English (en)
Inventor
Per-Oskar Persson
Original Assignee
Ingenjörsfirman Per Oskar Persson Ab
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 Ingenjörsfirman Per Oskar Persson Ab filed Critical Ingenjörsfirman Per Oskar Persson Ab
Priority to AU2001247003A priority Critical patent/AU2001247003A1/en
Publication of WO2001077596A1 publication Critical patent/WO2001077596A1/fr

Links

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
    • F25D15/00—Devices not covered by group F25D11/00 or F25D13/00, e.g. non-self-contained movable devices
    • 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
    • F25D16/00—Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery
    • 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
    • F25D3/02—Devices using other cold materials; Devices using cold-storage bodies using ice, e.g. ice-boxes
    • F25D3/06—Movable containers
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation

Definitions

  • the present invention relates generally to a refrigerator container and, more precisely, to an apparatus for freezing a cooling medium or a refrigerant which is arranged as a layer substantially enclosing a product storage space in a refrigerator container.
  • refrigerator containers of the kind which ensure that the products, during transport, maintain a desirably low temperature even at normal or elevated ambient temperatures.
  • refrigerator containers are described, for example, in US-A-5, 050 , 387.
  • the known refrigerator containers advantageously achieve this by utilising as refrigerant a substance which is in solid state at low temperature and, at a similarly low melting point, requires the absorption of a considerable quantity of heat in order to pass into the liquid state.
  • One substance of this type is water, which, with its 0°C melting point, is primarily usable for chilled products.
  • the refrigerator container Before the refrigerator container can be used for the transport of, for example, temperature-sensitive foods, it has to be charged, i.e. the refrigerant at least cooled to solid state.
  • the refrigerant layer in the form of water-filled plates being removed from the refrigerator container and chilled at least sufficiently for the refrigerant to solidify.
  • the whole of the refrigerator container can be introduced into a cooled space having sufficiently low temperature for the refrigerant to be converted to solid state.
  • An object of the present invention is therefore to simplify and shorten the freezing of the refrigerant as preparation for utilising the refrigerator container for the transport of, for example, frozen foods.
  • This object is achieved by means of an apparatus of the type stated in the introduction and having the features evident from claim 1. Preferred embodiments of the apparatus are evident from claims 2-16.
  • the invention accordingly utilises a device, which is introducible into the product storage space, via an opening thereto, into a working position, for generating jets of cooled air directed against the layer.
  • a device which is introducible into the product storage space, via an opening thereto, into a working position, for generating jets of cooled air directed against the layer.
  • the utilisation of such a device implies a very quick, simple and effective chilling of all parts of the refrigerant layer. More precisely, the jets break through the air layer closest to the free surface of the refrigerant layer and thus produce a sharp increase in the heat transfer coefficient between the air and the refrigerant layer. In practice, this means that the freezing time for the refrigerant can be reduced approximately by a factor of 10.
  • the jet-generating device can advantageously comprise a plurality of ducts, which, in the working position, extend along the layer and have perforated walls, facing said layer, for the generation of the jets.
  • the jet-generating device can further advantageously comprise additional ducts, which extend in one plane and have perforated walls for generating jets against parts of the layers which are arranged on the inside of a door by means of which the opening to the refrigerator storage space is sealable.
  • a fan member is arranged to create a pressure increase inside the ducts for the generation of the jets and the ducts have inlets which are connected to an outlet from a cooling battery. That part of the product storage space which is not taken up by the ducts can be designed to form at least a part of a return duct for the air of the jets to an inlet to the cooling battery.
  • That part of a region closest to the door which is not taken up by the additional ducts can also be designed to form a return duct for the air of the jets to an inlet to the cooling battery.
  • the cooling battery is arranged alongside the fan member, i.e. each apparatus has its own cooling battery.
  • a cooling battery can be jointly used by a plurality of apparatuses according to the invention, for example the cooling battery can be arranged to generate cooled air separately from the fan member and can be placed in a larger, pre-existing space connected to the suction side of the fan member.
  • Fig. 1 is a diagrammatic perspective view of one embodiment of an apparatus according to the invention.
  • Fig. 2 is a cross-sectional view level with the line II-II in Fig. 1 and shows, apart from the apparatus, also a refrigerator container.
  • Fig. 3 is a block diagram of a temperature-measuring device which is usable in connection with an apparatus according to the invention.
  • the embodiment, shown in the drawings, of an apparatus or charging station according to the invention comprises a cooling battery 1, a fan 2, a chamber 3 and a plurality of ducts 4, 5 and 6 having inlets which are connected to an outlet from the cooling battery 1 via the chamber 3.
  • the cooling battery 1, the fan 2, the chamber 3 and the ducts 4-6 are supported on a wall 7.
  • the opening 9 of a refrigerator container 8 is connectible in a sealing manner against the chamber 3, so that the ducts 4 and 5 extend into a product storage space 10 inside the refrigerator container 8 via the opening 9 thereof, which, during transport, is sealed by means of a door 11.
  • a refrigerating unit 12 with associated control equipment is arranged above the cooling battery 1.
  • the cooling battery 1 is cooled by the refrigerating unit 12 and cools, in turn, air which is blown through the cooling battery 1 from an inlet 13 to an outlet 14, which opens out in the chamber 3.
  • the ducts 4 have the form of L-shaped or U-shaped tubular arms, which extend in the direction outward from a front wall of the chamber 3. In their outward-facing sides, the ducts 4 are perforated and have tiny holes which discharge the cooled air blown out through the out- let 14 from the cooling battery 1, and this in the form of jets, which eventually hit the inside of the three inner side walls of the refrigerator container 8 and effectively cool these by breaking through the air layer closest to the surfaces of these side walls.
  • the refrige- rator container 8 is provided in a conventional manner with a layer 15 of a refrigerant, for example water or a salt solution, arranged in suitable containers which form the surfaces of the side walls or are situated directly adjacent thereto.
  • a refrigerant for example water or a salt solution
  • the ducts 5, of which only the upper one is shown, have the form of straight, tubular arms, which also extend in the direction outward from the front wall of the chamber 3 along the ceiling and floor respectively of the refrigerator container 8.
  • the ducts 5 are perforated and have tiny holes which discharge the cooled air blowing out through the outlet 14 from the cooling battery 1, and this in the form of jets, which eventually hit the inside of the ceiling and floor respectively of the refrigerator container 8 and effectively cool these.
  • the refrigerant layer 15 is thus also extended along the floor and ceiling of the refrigerator container 8.
  • the ducts 6 have the form of straight, tubular arms extending parallel with the wall 7. In their sides facing away from the wall 7, the ducts 6 are perforated and have tiny holes which, in the form of jets, discharge the cooled air blown out into the chamber 3 from the outlet 14 of the cooling battery 1. The jets eventually hit the inside of the door 11 of the refrigerator container 8 and effectively cool the refrigerant layer 15 likewise extended along said door.
  • the jets after having hit the respective parts of the refrigerant layer 15, can flow back between the ducts 4-5 to the suction side of the fan 2 , that part of the product storage space 10 which is not taken up by the ducts 4-5 forming a return duct for the air of the jets to an inlet to the inlet 13 of the cooling battery 1 via the fan 2.
  • that part of the region between the door 11 and the wall 7 which is not taken up by the ducts 6 forms a second return duct 16 to the inlet 13 of the cooling battery 1 via the fan 2.
  • This return duct 16 is shown in Fig. 2 as comprising a pipeline in to the product storage space 10.
  • these gripping members 17 are exemplified diagrammatically by pneumatic cylinders having gripping pistons. Two of the gripping members 17 are arranged to engage with the refrigerator container 8 above and below its opening 9 and a third one of these gripping members 17 is arranged to engage with the free side of the door 11.
  • the gripping members 17 can be controlled by an operator and pull the refrigerator con- tainer 8 with a predefined force in against the charging station.
  • a refrigerator container 8 In order to control the charging of a refrigerator container 8, this can be provided, as shown diagrammatically in Fig. 3, with one or more built-in temperature sensors 18i and 18u, which, via contacts 19 on the refrigerator container 8 and the charging station respectively, are connectible to a signal-processing circuit 20.
  • the temperature sensors 18i and 18u are arranged by that side of the refrigerant layer 15 closest to the product storage space 10 and by that side of the refrigerant layer 15 facing away from the product storage space 10, respectively.
  • the signal-processing circuit 20 is designed to indicate, for example, the temperature of the refrigerant in the refrigerant layer 15, and/or completed charging, on a display 21.
  • the signal-processing circuit 20 provides a facility for automatically controlling the refrigerating time in the charging station depending on, for example, the pattern of the temperature reduction in the refrigerant 15. This control function can advantageously be carried out such that the temperature in the layer 15 is detected at one or more points by that side of the layer 15 facing away from the product storage space 10.
  • the signal- processing circuit 20 can then register when the whole of the layer 15 has been cooled to a temperature immediately below the melting point of the refrigerant and can then terminate the charging, since further cooling only implies a limited increase in the cooling capacity of the refrigerant in the layer 15. Accordingly, it becomes possible to have control over when the charging is completed.
  • a cooling battery can be utilised jointly by a plu- rality of apparatuses according to the invention.
  • a preexisting, larger cooling space can also be used, provided that the cooling battery of the cooling space has the necessary cooling capacity.
  • the apparatus's own cooling battery it is possible, of course, to use the apparatus's own cooling battery merely as a complement to enable the attainment of the necessary cooling capacity.
  • the refrigerating unit to which the cooling battery 1 belongs and which is conventional in type can, of course, be variously positioned in relation to the actual cooling battery 1.

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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

L'invention porte sur un appareil de congélation d'un liquide réfrigérant formant un revêtement (15) entourant sensiblement le compartiment (10) de stockage de produits de la chambre d'un réfrigérateur. Ledit appareil comporte une batterie (1) et un dispositif (4, 5) pouvant être introduit dans ledit compartiment (10) par une ouverture (9) à cet effet et produisant des jets d'air, refroidi sans ladite batterie et dirigés sur le revêtement (15).
PCT/SE2001/000760 2000-04-10 2001-04-06 Appareil de congelation d'un liquide refrigerant dans la chambre d'un refrigerateur WO2001077596A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001247003A AU2001247003A1 (en) 2000-04-10 2001-04-06 Apparatus for freezing a cooling medium in a refrigerator container

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0001329-2 2000-04-10
SE0001329A SE518895C2 (sv) 2000-04-10 2000-04-10 Apparat för frysning av ett kylmedium i en kyltransportbehållare

Publications (1)

Publication Number Publication Date
WO2001077596A1 true WO2001077596A1 (fr) 2001-10-18

Family

ID=20279266

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/000760 WO2001077596A1 (fr) 2000-04-10 2001-04-06 Appareil de congelation d'un liquide refrigerant dans la chambre d'un refrigerateur

Country Status (3)

Country Link
AU (1) AU2001247003A1 (fr)
SE (1) SE518895C2 (fr)
WO (1) WO2001077596A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003987A1 (de) * 1980-02-04 1981-08-13 Messer Griesheim Gmbh, 6000 Frankfurt Mit einer kuehleinrichtung versehener kleincontainer
US5050387A (en) * 1988-03-02 1991-09-24 Pallet-Cooler Kb Method and container for storing and distribution of foodstuffs
EP0778463A1 (fr) * 1995-12-08 1997-06-11 The Perkin-Elmer Corporation Calorimètre avec refroidissement rapide d'un récipient pour chauffer en celui-ci
WO1997030317A1 (fr) * 1996-02-13 1997-08-21 Ingenjörsfirman Per-Oskar Persson Ab Congelateur pour liquide
DE19629034A1 (de) * 1996-07-18 1998-01-22 Messer Griesheim Gmbh Tragtasche
US5711164A (en) * 1996-10-25 1998-01-27 Slack; Patricia M. Portable cooler using CO2 for temporary cooling
EP0964214A1 (fr) * 1998-06-11 1999-12-15 Colpo Company Limited Système de réfrigération compact pour conteneurs et procédé de conservation du froid

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003987A1 (de) * 1980-02-04 1981-08-13 Messer Griesheim Gmbh, 6000 Frankfurt Mit einer kuehleinrichtung versehener kleincontainer
US5050387A (en) * 1988-03-02 1991-09-24 Pallet-Cooler Kb Method and container for storing and distribution of foodstuffs
EP0778463A1 (fr) * 1995-12-08 1997-06-11 The Perkin-Elmer Corporation Calorimètre avec refroidissement rapide d'un récipient pour chauffer en celui-ci
WO1997030317A1 (fr) * 1996-02-13 1997-08-21 Ingenjörsfirman Per-Oskar Persson Ab Congelateur pour liquide
DE19629034A1 (de) * 1996-07-18 1998-01-22 Messer Griesheim Gmbh Tragtasche
US5711164A (en) * 1996-10-25 1998-01-27 Slack; Patricia M. Portable cooler using CO2 for temporary cooling
EP0964214A1 (fr) * 1998-06-11 1999-12-15 Colpo Company Limited Système de réfrigération compact pour conteneurs et procédé de conservation du froid

Also Published As

Publication number Publication date
AU2001247003A1 (en) 2001-10-23
SE0001329D0 (sv) 2000-04-10
SE518895C2 (sv) 2002-12-03
SE0001329L (sv) 2001-10-11

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