EP0580494A1 - Display case with refrigerated shelf - Google Patents

Display case with refrigerated shelf Download PDF

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Publication number
EP0580494A1
EP0580494A1 EP93401864A EP93401864A EP0580494A1 EP 0580494 A1 EP0580494 A1 EP 0580494A1 EP 93401864 A EP93401864 A EP 93401864A EP 93401864 A EP93401864 A EP 93401864A EP 0580494 A1 EP0580494 A1 EP 0580494A1
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EP
European Patent Office
Prior art keywords
air
refrigerated
tray
display case
shelf
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Withdrawn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
EP93401864A
Other languages
German (de)
French (fr)
Inventor
Hervé Farge
Jean-Claude Neyton
Ronald Budzik
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.)
Frigoforme Sarl
Original Assignee
Frigoforme Sarl
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 Frigoforme Sarl filed Critical Frigoforme Sarl
Publication of EP0580494A1 publication Critical patent/EP0580494A1/en
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0482—Details common to both closed and open types
    • A47F3/0486—Details common to both closed and open types for charging, displaying or discharging the articles
    • A47F3/0491—Cooled shelves
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0482—Details common to both closed and open types
    • A47F3/0495—Spraying, trickling or humidifying means

Definitions

  • the present invention relates to a display case with refrigerated tray, for the conservation and display of food-type products. It relates more particularly to a display case with a refrigerated tray comprising means for creating an air flow forming a loop around said refrigerated tray.
  • a refrigerated display case comprising a refrigerated tray, which is a hollow body, the upper face of which is flat and can serve as a support for food products, and the interior cavity of which serves as a housing for a refrigerated product, the temperature of which is regulated.
  • the means for regulating the temperature of the refrigerant product are for example constituted by a circuit which allows the circulation of the refrigerant product outside the body, and which is equipped with means for cooling the refrigerant product, by compression and expansion of it.
  • Such a refrigerated tray has the advantage of actively participating in the cooling of the food products which it supports, and thereby allows to a certain extent to obtain temperature gradients which are less important than those which can be observed in the display cases.
  • presentation which are refrigerated by means of a conventional cold battery, the enclosure of the display case in this case being refrigerated by natural convection of air, and / or by forced circulation of air.
  • the aim set by the applicant is to improve the display cases with refrigerated tray currently known, so as to obtain a temperature uniformity on the surface of the refrigerated tray which is almost perfect, and thereby keep the food products at a constant temperature which is identical for all products, regardless of their position in the refrigerated display case.
  • the refrigerated display case of the invention which in known manner comprises on the one hand at least one refrigerated tray, at least part of which constitutes an exhibition tray serving as a food-type support, and on the other hand, means of forced air circulation.
  • the means of forced circulation of air inject air under the refrigerated tray and suck the air above said tray;
  • the edge of the exposure plate which is opposite to the part of the refrigerated plate where the air is injected, is contiguous with a vertical deflection wall and bent upwards, so that the flow of rising air which passes into the space separating said edge and the deflection wall, is redirected in the opposite direction towards the top of the exposure plate.
  • the deflection wall makes it possible to obtain an air flow which is very close to the surface of the upper wall of the exposure plate.
  • this air flow surrounding the refrigerated tray, and passing close to the surface of the exposure tray, combined with the creation of cold by the refrigerated tray, makes it possible to obtain a very good temperature uniformity of the preserved products. on the exhibition shelf.
  • all or part of the lower wall of the exposure plate has undulations whose crests are parallel to the direction of circulation of the air flow. These undulations make it possible to have a larger heat exchange surface with the air flow created. The orientation of the corrugations makes it possible not to disturb the circulation of the air flow. Ventilation is therefore more efficient.
  • all or part of the upper wall of the exposure plate has undulations whose crests are parallel to the direction of circulation of the air flow.
  • This corrugated shape of the upper wall allows, on the one hand a better circulation of the air flow which is redirected, by the deflection wall, under the products supported by the plate, and on the other hand limits the contact zones between products and the refrigerated surface, which contributes to improving the temperature uniformity of the products.
  • a problem associated with keeping a food product at the right temperature lies in the water loss of this product, which induces an equivalent loss in weight of the product. To avoid this dehydration which harms the quality of the product, it is necessary to regulate very precisely the rate of hygrometry inside the display case.
  • a known method of regulation consists in injecting moist air inside the display case. To the knowledge of the applicant, the display cases which currently use such a regulation process have a humidity rate which varies considerably over time and according to the location of the window where it is measured. The Applicant has found that the injection of moist air into the space between the above-mentioned deflection wall and the front edge of the exposure plate, combined with the ventilation created by the air flow surrounding the refrigerated plate.
  • the display case includes means for humidifying the air capable of creating a flow of moist air and a duct, one end of which is connected to the humidification means and the opposite end of which opens into the space separating the deflection wall and the edge of the exposure plate.
  • the refrigerated display case shown in Figure 1, is intended to serve as a display for the sale of food products, especially in supermarkets. It comprises a frame 1, the front edge 10 of which is fitted over its entire length with a window 2, and which supports a refrigerated tray 3.
  • the refrigerated tray 3 consists of a hollow body 30, containing a heat transfer fluid, of the glycol water type, the temperature of which is kept constant.
  • the hollow body 30 is in the form of a block comprising a hollow exposure tray 301, which serves as a support for the products presented for sale, a vertical rear part 302 also hollow, and a reservoir 303 for supply and '' heat transfer fluid.
  • the cavities of these three elements communicate with each other.
  • the lower 304 and upper 305 walls of the exposure tray 301 respectively have lower 306 and upper 307 undulations, the crests of which have a transverse direction relative to the length of the front edge 10 of the frame 1.
  • These undulations extend between the locations corresponding to sections YY 'and ZZ', the views of which are shown in Figures 2 and 3 respectively.
  • the height of the lower corrugations 306 progressively decreases from the rear to the front of the platform, that is to say from the section YY 'towards section ZZ', while the height of the upper undulations 307 gradually increases.
  • these undulations delimit, inside the exposure plate 301, identical and separate internal conduits 308 allowing transverse circulation of the heat transfer fluid inside the exposure plate, it that is to say from the rear to the front of the plate and vice versa.
  • the front part 309 of the exposure plate which is not corrugated, constitutes a distribution duct 310, into which each internal duct 308 opens, and which is parallel to the front edge 10 of the frame 1.
  • FIG. 4 a schematic top view of the hollow body 30, which shows the direction of circulation of the heat transfer fluid inside the exposure plate 301, and on which the interior conduits 308 are shown in dotted lines.
  • the reservoir 303 consists of two compartments 303a, 303b, pierced respectively with an orifice 304a, 304b.
  • the compartments 303a and 303b are respectively used for supplying and removing the heat transfer fluid contained in the hollow body 30.
  • the refrigerated tray comprises means of forced circulation 32 of the heat transfer fluid connected to the orifices 304a, 304b by means of flexible circulation conduits 34a.
  • These means of forced circulation 32 of the heat transfer fluid are for example a suction and treading pump, of the rotary positive displacement pump type.
  • the forced circulation means 32 are also connected by means of conduits 34b to cooling means 33 of the heat transfer fluid.
  • these cooling means 33 consist of a compressor connected at the inlet and at the outlet respectively to an evaporator and to a condenser, the evaporator and the condenser being respectively connected at the inlet and at the outlet to the conduits 34b .
  • the forced circulation means 32, the cooling means 33 and the conduits 34a, 34b constitute a closed circuit for cooling the heat transfer fluid, external to the hollow body 30, and which makes it possible to regulate the temperature of the heat transfer fluid contained in said body. hollow.
  • the refrigerated tray also consists of the same hollow body 30 which contains a static heat transfer fluid and which is supported directly by a cold source, such as the cold coil which is generally used in refrigeration cabinets. Maintaining the heat transfer fluid at a constant temperature is in this case achieved by heat exchange between the surface of the lower wall 304 of the exposure plate 301 of the hollow body 30, and the surface of the upper wall of the cold pack. Thanks to the convection currents which are established within the heat transfer fluid, the refrigerated tray has a uniform temperature over the entire surface of the upper wall 305 of the exposure tray 301.
  • the hollow body 30 is in one piece, and its walls are made of polyethylene.
  • polyethylene makes it possible to obtain a relatively light refrigerated tray, and therefore easy to handle.
  • polyethylene has all the necessary characteristics of food hygiene.
  • rotational molding a manufacturing process called rotational molding, known to those skilled in the art.
  • This example embodiment of the plate is not, however, limiting. It can also be made of a plastic material other than polyethylene, or be made of a metallic material, of the aluminum type.
  • the plate may not be in one piece, but consist of two half-shells assembled by welding or gluing according to the material used.
  • the presentation window also includes means for forced air circulation 4, of the fan type. Said means are fixed to the rear of the display case, behind the vertical part 302 of the hollow body 30. To access these means of forced air circulation, and thereby to the reservoir 303, it suffices to remove the removable plate 8 closing a inspection hatch 9 located at the rear of the display case.
  • the means of forced air circulation 4 create an air flow around the hollow body 30, which forms a loop represented schematically by arrows in FIG. 1. The air is injected under the exposure plate 301 of the body hollow 30, then flows in the direction of the lower corrugations 306 under said plate to the front edge 311, where it is then sucked in opposite direction above the exposure plate.
  • the lower corrugations 306 define, with the upper wall 11 of the frame 1, air circulation ducts under the exposure plate; in addition, they also serve as heat exchange fins between the surface of the bottom wall 304 of the exposure plate 301 and the ventilated air. It is the same for the upper corrugations 307. These also make it possible to reduce the contact surface with the exposed products, which contributes to a better homogeneity of their temperature.
  • the surface of the upper wall 305 of the exposure plate 301 is inclined downwards from the rear towards the front of the plate, so that the water resulting for example from the melting of the film of ice which generally covers the exposed products, can flow into the hollow of the upper undulations 307 which act as channels.
  • the water can flow to a discharge duct 6 produced in the base 7 of the frame 1. It is possible to also take advantage of the inclination of the exposure plate 301 and the upper surface 11 of the frame 1 to directly clean the hollow body 30 and the frame 1 by injecting pressurized water on the surface of the exposure plate 301 , which water then flows to the evacuation duct 6, driving along any passage of dirt.
  • the front edge 10 of the frame 1 is also provided, over the entire length L of the exposure plate 301, with a part 15 bent upwards.
  • the air which arrives at the front edge 311 of the exposure plate 301 passes through the space 12 separating the deflection wall 16 of the part 15 and the front edge 311, and is deflected towards the rear of the exposure plate 301 by said deflection wall.
  • the air which is sucked above the exposure plate 301 thus circulates near the surface of the upper wall 305 of the exposure plate 301; the exposed products are therefore better ventilated, and at the same time the formation of condensation on the glass 2 is avoided.
  • Such means are known to those skilled in the art. They include a container containing a liquid which is most often water, and in which oscillations are created using an ultrasound system. The air located above the container is therefore highly charged with humidity, and is ventilated by means of ventilation type fan.
  • the humidification means 14 are connected to the end 13a of a humidification conduit 13 formed in the frame 1, and the opposite end 13b of which opens into the space 12.
  • the air ventilated by the means forced air circulation 4 is charged with moisture by crossing the space 12, which allows the humidity level to be maintained at a constant level.
  • the front part 17 of the frame 1 includes a cavity (not shown) which extends over the entire length of the front face of the display case.
  • the front part 17 of the frame is regularly pierced with orifices (not shown) which directly communicate said interior cavity with the space 12.
  • the end 13b of the humidification duct opens into the cavity of the front part 17 of the frame 1.
  • This cavity then acts as a distribution duct, over the entire length of the display case, for ventilated moist air which is created by the humidification means 14.
  • the window 2 shown in Figure 1 is a laminated glass, in which was incorporated during the manufacturing process, a material which filters the ultraviolet radiation.
  • Securit glass which has hitherto always been used for the manufacture of windows for refrigerated display cases.
  • the use of laminated glass makes it possible to obtain panes having a strongly curved shape, unlike Securit glass.
  • the invention is not limited to the description which has just been made of a particular embodiment of a refrigerated display case according to the invention.
  • a display case of the refrigerated cupboard type comprising either several superimposed refrigerated trays, or a single refrigerated tray whose hollow body consists of a plurality of exposure trays superimposed on each other so as to constitute a shelf.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Freezers Or Refrigerated Showcases (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

The refrigerated display cabinet for keeping food products comprises, on the one hand a refrigerated shelf (3), at least part of which is a display shelf (301) on which the food products can be placed, and on the other hand means for the forced circulation of air (4). It is a feature of the invention that in order to create a flow of air in a loop surrounding the refrigerated shelf (3), the forced air circulating means (4) inject air on the underside of the refrigerated shelf (3) and draw the air in over the top of the refrigerated shelf, and the edge (311) of the display shelf (301), which is remote from the refrigerated part of the shelf (3) where the air injection takes place, is adjacent to a vertical deflecting wall (16) that arches up and over in such a way that the air rising up the gap (12) between said edge (311) and the deflecting wall (16) is redirected back over the display shelf (301). <IMAGE>

Description

La présente invention a pour objet une vitrine de présentation à plateau réfrigéré, pour la conservation et l'exposition de produits du type alimentaire. Elle concerne plus particulièrement une vitrine de présentation à plateau réfrigéré comportant des moyens pour la création d'un flux d'airformant une boucle autour dudit plateau réfrigéré.The present invention relates to a display case with refrigerated tray, for the conservation and display of food-type products. It relates more particularly to a display case with a refrigerated tray comprising means for creating an air flow forming a loop around said refrigerated tray.

On connaît déjà, notamment par le document NL 8 602 780, une vitrine de présentation réfrigérée comportant un plateau réfrigéré, qui est un corps creux, dont la face supérieure est plane et peut servir de support à des produits alimentaires, et dont la cavité intérieure sert de logement à un produit frigorifique, dont la température est régulée. Plus particulièrement, les moyens de régulation de la température du produit frigorifique sont par exemple constitués par un circuit qui permet la circulation du produit frigorifique à l'extérieur du corps, et qui est équipé de moyens de refroidissement du produit frigorifique, par compression et détente de celui-ci.Already known, in particular from document NL 8 602 780, a refrigerated display case comprising a refrigerated tray, which is a hollow body, the upper face of which is flat and can serve as a support for food products, and the interior cavity of which serves as a housing for a refrigerated product, the temperature of which is regulated. More particularly, the means for regulating the temperature of the refrigerant product are for example constituted by a circuit which allows the circulation of the refrigerant product outside the body, and which is equipped with means for cooling the refrigerant product, by compression and expansion of it.

Un tel plateau réfrigéré présente l'avantage de participer activement au refroidissement des produits alimentaires qu'il supporte, et permet par là-même dans une certaine mesure d'obtenir des gradients de température qui sont moins importants que ceux pouvant être observés dans les vitrines de présentation qui sont réfrigérées au moyen d'une batterie de froid classique, l'enceinte de la vitrine étant dans ce cas réfrigérée par convection naturelle de l'air, et/ou par circulation forcée de l'air.Such a refrigerated tray has the advantage of actively participating in the cooling of the food products which it supports, and thereby allows to a certain extent to obtain temperature gradients which are less important than those which can be observed in the display cases. presentation which are refrigerated by means of a conventional cold battery, the enclosure of the display case in this case being refrigerated by natural convection of air, and / or by forced circulation of air.

le but que s'est fixé le demandeur est d'améliorer les vitrines de présentation à plateau réfrigéré actuellement connues, de manière à obtenir une homogénéité en température à la surface du plateau réfrigéré qui soit quasiment parfaite, et par là-même de conserver les produits alimentaires à une température constante qui est identique pour tous les produits, quelle que soit leur position dans la vitrine réfrigérée.the aim set by the applicant is to improve the display cases with refrigerated tray currently known, so as to obtain a temperature uniformity on the surface of the refrigerated tray which is almost perfect, and thereby keep the food products at a constant temperature which is identical for all products, regardless of their position in the refrigerated display case.

Cet objectif est parfaitement atteint par la vitrine de présentation réfrigérée de l'invention, qui de manière connue comporte d'une part au moins un plateau réfrigéré, dont une partie au moins constitue un plateau d'exposition servant de support de type alimentaire, et d'autre part des moyens de circulation forcée de l'air.This objective is perfectly achieved by the refrigerated display case of the invention, which in known manner comprises on the one hand at least one refrigerated tray, at least part of which constitutes an exhibition tray serving as a food-type support, and on the other hand, means of forced air circulation.

De manière caractéristique selon l'invention, dans le but de créer un flux d'air qui forme une boucle entourant le plateau réfrigéré, les moyens de circulation forcée de l'air injectent de l'air sous le plateau réfrigéré et aspirent l'air au-dessus dudit plateau ; le bord du plateau d'exposition, qui est opposé à la partie du plateau réfrigéré où se fait l'injection d'air, est contigu d'une paroi de déflexion verticale et recourbée vers le haut, de telle sorte que le flux d'air ascendant qui passe dans l'espace séparant ledit bord et la paroi de déflexion, est redirigé en sens inverse vers le dessus du plateau d'exposition.Characteristically according to the invention, with the aim of creating an air flow which forms a loop surrounding the refrigerated tray, the means of forced circulation of air inject air under the refrigerated tray and suck the air above said tray; the edge of the exposure plate, which is opposite to the part of the refrigerated plate where the air is injected, is contiguous with a vertical deflection wall and bent upwards, so that the flow of rising air which passes into the space separating said edge and the deflection wall, is redirected in the opposite direction towards the top of the exposure plate.

La paroi de déflexion permet d'obtenir un flux d'air qui est très proche de la surface de la paroi supérieure du plateau d'exposition. Ainsi, ce flux d'air entourant le plateau réfrigéré, et passant à proximité de la surface du plateau d'exposition, combinée avec la création de froid par le plateau réfrigéré, permet d'obtenir une très bonne homogénéité de la température des produits conservés sur le plateau d'exposition.The deflection wall makes it possible to obtain an air flow which is very close to the surface of the upper wall of the exposure plate. Thus, this air flow surrounding the refrigerated tray, and passing close to the surface of the exposure tray, combined with the creation of cold by the refrigerated tray, makes it possible to obtain a very good temperature uniformity of the preserved products. on the exhibition shelf.

Avantageusement, tout ou partie de la paroi inférieure du plateau d'exposition comporte des ondulations dont les crêtes sont parallèles à la direction de circulation du flux d'air. Ces ondulations permettent d'avoir une surface d'échange thermique plus importante avec le flux d'air créé. L'orientation des ondulations permet de ne pas perturber la circulation du flux d'air. La ventilation est donc plus efficace.Advantageously, all or part of the lower wall of the exposure plate has undulations whose crests are parallel to the direction of circulation of the air flow. These undulations make it possible to have a larger heat exchange surface with the air flow created. The orientation of the corrugations makes it possible not to disturb the circulation of the air flow. Ventilation is therefore more efficient.

De préférence, tout ou partie de la paroi supérieure du plateau d'exposition comporte des ondulations dont les crêtes sont parallèles à la direction de circulation du flux d'air. Cette forme ondulée de la paroi supérieure permet, d'une part une meilleure circulation du flux d'air qui est redirigé, par la paroi de déflexion, sous les produits supportés par le plateau, et d'autre part limite les zones de contact entre les produits et la surface réfrigérée, ce qui contribue à améliorer l'homogénéité en température des produits.Preferably, all or part of the upper wall of the exposure plate has undulations whose crests are parallel to the direction of circulation of the air flow. This corrugated shape of the upper wall allows, on the one hand a better circulation of the air flow which is redirected, by the deflection wall, under the products supported by the plate, and on the other hand limits the contact zones between products and the refrigerated surface, which contributes to improving the temperature uniformity of the products.

Un problème lié à la conservation d'un produit alimentaire à bonne température réside dans la perte en eau de ce produit, laquelle induit une perte équivalente en poids du produit. Pour éviter cette déshydratation qui nuit à la qualité du produit, il est nécessaire de réguler de façon très précise le taux d'hygrométrie à l'intérieur de la vitrine de présentation. Un procédé de régulation connu consiste à injecter de l'air humide à l'intérieur de la vitrine. A la connaissance du demandeur, les vitrines de présentation qui mettent actuellement en oeuvre un tel procédé de régulation, ont un taux d'hygrométrie qui varie considérablement dans le temps et selon l'endroit de la vitrine où il est mesuré. Le demandeur a constaté que l'injection d'air humide dans l'espace situé entre la paroi de déflexion précitée et le bord avant du plateau d'exposition, combinée avec la ventilation créée par le flux d'airen- tourant le plateau réfrigéré permet d'obtenir un taux d'hygrométrie constant dans le temps et qui est homogène à l'intérieur de la vitrine de présentation réfrigérée, et notamment sur toute la surface du plateau d'exposition. A cet effet, la vitrine de présentation comporte des moyens d'humidification de l'air aptes à créer un flux d'air humide et une canalisation dont une extrémité est reliée aux moyens d'humidification et dont l'extrémité opposée débouche dans l'espace séparant la paroi de déflexion et le bord du plateau d'exposition.A problem associated with keeping a food product at the right temperature lies in the water loss of this product, which induces an equivalent loss in weight of the product. To avoid this dehydration which harms the quality of the product, it is necessary to regulate very precisely the rate of hygrometry inside the display case. A known method of regulation consists in injecting moist air inside the display case. To the knowledge of the applicant, the display cases which currently use such a regulation process have a humidity rate which varies considerably over time and according to the location of the window where it is measured. The Applicant has found that the injection of moist air into the space between the above-mentioned deflection wall and the front edge of the exposure plate, combined with the ventilation created by the air flow surrounding the refrigerated plate. to obtain a constant humidity level over time and which is uniform inside the refrigerated display case, and in particular over the entire surface of the exhibition tray. To this end, the display case includes means for humidifying the air capable of creating a flow of moist air and a duct, one end of which is connected to the humidification means and the opposite end of which opens into the space separating the deflection wall and the edge of the exposure plate.

D'autres caractéristiques et avantages ressortiront de la description suivante d'un mode de réalisation particulier d'une vitrine de présentation à plateau réfrigérée, donnée en référence au dessin annexé sur lequel :

  • La figure 1 est une vue de côté d'une vitrine de présentation comportant un plateau réfrigéré ayant un corps creux contenant un fluide caloporteur régulé en température et dont une partie sert de plateau d'exposition.
  • Les figures 2 et 3 sont des coupes transversales du plateau d'exposition du corps du plateau réfrigéré de la figure 1,
  • La figure 4 est une vue de dessus du corps creux du plateau réfrigéré.
Other characteristics and advantages will emerge from the following description of a particular embodiment of a display case with a refrigerated tray, given with reference to the attached drawing on which :
  • FIG. 1 is a side view of a display case comprising a refrigerated tray having a hollow body containing a heat-regulated fluid regulated in temperature and a part of which serves as an exposure tray.
  • FIGS. 2 and 3 are cross-sections of the exposure tray of the body of the refrigerated tray of FIG. 1,
  • Figure 4 is a top view of the hollow body of the refrigerated tray.

La vitrine de présentation réfrigérée, représentée à la figure 1, est destinée à servir de présentoir à la vente de produits alimentaires notamment dans les grandes surfaces. Elle comporte un bâti 1, dont le bord avant 10 est équipé sur toute sa longueur d'une vitre 2, et qui supporte un plateau réfrigéré 3.The refrigerated display case, shown in Figure 1, is intended to serve as a display for the sale of food products, especially in supermarkets. It comprises a frame 1, the front edge 10 of which is fitted over its entire length with a window 2, and which supports a refrigerated tray 3.

Le plateau réfrigéré 3 est constitué d'un corps creux 30, contenant un fluide caloporteur, du type eau glycolée, dont la température est maintenue constante. Le corps creux 30 se présente sous la forme d'un bloc comportant un plateau d'exposition 301 creux, qui sert de support aux produits présentés à la vente, une partie arrière 302 verticale également creuse, et un réservoir 303 d'alimentation et d'évacuation du fluide caloporteur. Les cavités de ces trois éléments communiquent entre elles. Les parois inférieure 304 et supérieure 305 du plateau d'exposition 301 présentent respectivement des ondulations inférieure 306 et supérieure 307, dont les crêtes ont une direction transversale par rapport à la longueur du bord avant 10 du bâti 1. Ces ondulations s'étendent entre les emplacements correspondant aux coupes YY' et ZZ', dont les vues sont représentées respectivement aux figures 2 et 3. La hauteur des ondulations inférieures 306 diminue progressivement de l'arrière vers l'avant du plateau, c'est-à-dire de la coupe YY' vers la coupe ZZ', tandis que la hauteur des ondulations supérieures 307 augmente progressivement. Comme cela apparaît sur les figures 2 et 3, ces ondulations délimitent à l'intérieur du plateau d'exposition 301, des conduits internes 308 identiques et séparés permettant une circulation transversale du fluide caloporteur à l'intérieur du plateau d'exposition, c'est-à-dire de l'arrière vers l'avant du plateau et réciproquement. La partie avant 309 du plateau d'exposition, qui n'est pas ondulée constitue un conduit de distribution 310, dans lequel débouche chaque conduit interne 308, et qui est parallèle au bord avant 10 du bâti 1. On a représenté à la figure 4, une vue schématique de dessus du corps creux 30, qui fait apparaître le sens de circulation du fluide caloporteur à l'intérieur du plateau d'exposition 301, et sur laquelle les conduits intérieurs 308 sont représentés en pointillés. Sur la figure 4, il apparaît également que le réservoir 303 est constitué de deux compartiments 303a, 303b, percés respectivement d'un orifice 304a, 304b. Les compartiments 303a et 303b servent respectivement à l'alimentation et à l'évacuation du fluide caloporteur contenu dans le corps creux 30.The refrigerated tray 3 consists of a hollow body 30, containing a heat transfer fluid, of the glycol water type, the temperature of which is kept constant. The hollow body 30 is in the form of a block comprising a hollow exposure tray 301, which serves as a support for the products presented for sale, a vertical rear part 302 also hollow, and a reservoir 303 for supply and '' heat transfer fluid. The cavities of these three elements communicate with each other. The lower 304 and upper 305 walls of the exposure tray 301 respectively have lower 306 and upper 307 undulations, the crests of which have a transverse direction relative to the length of the front edge 10 of the frame 1. These undulations extend between the locations corresponding to sections YY 'and ZZ', the views of which are shown in Figures 2 and 3 respectively. The height of the lower corrugations 306 progressively decreases from the rear to the front of the platform, that is to say from the section YY 'towards section ZZ', while the height of the upper undulations 307 gradually increases. As shown in FIGS. 2 and 3, these undulations delimit, inside the exposure plate 301, identical and separate internal conduits 308 allowing transverse circulation of the heat transfer fluid inside the exposure plate, it that is to say from the rear to the front of the plate and vice versa. The front part 309 of the exposure plate, which is not corrugated, constitutes a distribution duct 310, into which each internal duct 308 opens, and which is parallel to the front edge 10 of the frame 1. There is shown in FIG. 4 , a schematic top view of the hollow body 30, which shows the direction of circulation of the heat transfer fluid inside the exposure plate 301, and on which the interior conduits 308 are shown in dotted lines. In FIG. 4, it also appears that the reservoir 303 consists of two compartments 303a, 303b, pierced respectively with an orifice 304a, 304b. The compartments 303a and 303b are respectively used for supplying and removing the heat transfer fluid contained in the hollow body 30.

A cet effet, le plateau réfrigéré comprend des moyens de circulation forcée 32 du fluide caloporteur reliés aux orifices 304a, 304b par l'intermédiaire de conduits de circulation 34a souples. Ces moyens de circulation forcée 32 du fluide caloporteur sont par exemple une pompe aspirante et foulante, du type pompe volumétrique rotative. Les moyens de circulation forcée 32 sont également reliés par l'intermédiaire de conduits 34b, à des moyens de refroidissement 33 du fluide caloporteur. Dans un exemple de réalisation précis, ces moyens de refroidissement 33 sont constitués d'un compresseur relié en entrée et en sortie respectivement à un évaporateur et à un condenseur, l'évaporateur et le condenseur étant reliés respectivement en entrée et en sortie aux conduits 34b. Les moyens-de circulation forcée 32, les moyens de refroidissement 33 et les conduits 34a, 34b, constituent un circuit fermé de refroidissement du fluide caloporteur, extérieur au corps creux 30, et qui permet de réguler la température du fluide caloporteur contenu dans ledit corps creux.To this end, the refrigerated tray comprises means of forced circulation 32 of the heat transfer fluid connected to the orifices 304a, 304b by means of flexible circulation conduits 34a. These means of forced circulation 32 of the heat transfer fluid are for example a suction and treading pump, of the rotary positive displacement pump type. The forced circulation means 32 are also connected by means of conduits 34b to cooling means 33 of the heat transfer fluid. In a specific embodiment, these cooling means 33 consist of a compressor connected at the inlet and at the outlet respectively to an evaporator and to a condenser, the evaporator and the condenser being respectively connected at the inlet and at the outlet to the conduits 34b . The forced circulation means 32, the cooling means 33 and the conduits 34a, 34b, constitute a closed circuit for cooling the heat transfer fluid, external to the hollow body 30, and which makes it possible to regulate the temperature of the heat transfer fluid contained in said body. hollow.

Dans un autre mode de réalisation particulier (non représenté), le plateau réfrigéré est également constitué du même corps creux 30 qui contient un fluide caloporteur statique et qui est supporté directement par une source de froid, telle que la batterie de froid qui est généralement utilisée dans les meubles frigorifiques. Le maintien du fluide caloporteur à une température constante est dans ce cas réalisé par échange thermique entre la surface de la paroi inférieure 304 du plateau d'exposition 301 du corps creux 30, et la surface de la paroi supérieure de la batterie de froid. Grâce aux courants de convexion qui s'établissent au sein du fluide caloporteur, le plateau réfrigéré présente une température homogène sur toute la surface de la paroi supérieure 305 du plateau d'exposition 301.In another particular embodiment (not shown), the refrigerated tray also consists of the same hollow body 30 which contains a static heat transfer fluid and which is supported directly by a cold source, such as the cold coil which is generally used in refrigeration cabinets. Maintaining the heat transfer fluid at a constant temperature is in this case achieved by heat exchange between the surface of the lower wall 304 of the exposure plate 301 of the hollow body 30, and the surface of the upper wall of the cold pack. Thanks to the convection currents which are established within the heat transfer fluid, the refrigerated tray has a uniform temperature over the entire surface of the upper wall 305 of the exposure tray 301.

Dans un exemple précis de réalisation, le corps creux 30 est monobloc, et ses parois sont en polyéthylène. L'utilisation de polyéthylène permet d'obtenir un plateau réfrigéré relativement léger, et donc facilement manipulable. De plus, le polyéthylène présente toutes les caractéristiques nécessaires d'hygiène alimentaire. Par ailleurs, étant donné la forme compliquée du corps creux 30, pour réaliser celui-ci en un seul bloc, on utilise de préférence un procédé de fabrication appelé rotomoulage, connu de l'homme du métier. Cet exemple de réalisation du plateau n'est cependant pas limitatif. Il peut également être réalisé dans un matériau plastique autre que le polyéthylène, ou être fabriqué dans un matériau métallique, du type aluminium. En outre, le plateau peut-ne pas être monobloc, mais être constitué de deux demi-coques assemblées par soudage ou collage selon le matériau employé.In a specific embodiment, the hollow body 30 is in one piece, and its walls are made of polyethylene. The use of polyethylene makes it possible to obtain a relatively light refrigerated tray, and therefore easy to handle. In addition, polyethylene has all the necessary characteristics of food hygiene. Furthermore, given the complicated shape of the hollow body 30, to produce the latter in a single block, use is preferably made of a manufacturing process called rotational molding, known to those skilled in the art. This example embodiment of the plate is not, however, limiting. It can also be made of a plastic material other than polyethylene, or be made of a metallic material, of the aluminum type. In addition, the plate may not be in one piece, but consist of two half-shells assembled by welding or gluing according to the material used.

La vitrine de présentation comprend également des moyens de circulation forcée de l'air 4, du type ventilateur. Lesdits moyens sont fixés à l'arrière de la vitrine, derrière la partie verticale 302 du corps creux 30. Pour accéder à ces moyens de circulation forcée de l'air, et par là même au réservoir 303, il suffit de retirer la plaque amovible 8 fermant une trappe de visite 9 située à l'arrière de la vitrine de présentation. Les moyens de circulation forcée de l'air 4 créent un flux d'air autour du corps creux 30, qui forme une boucle représentée schématiquement par des flèches sur la figure 1. L'air est injecté sous le plateau d'exposition 301 du corps creux 30, puis circule dans la direction des ondulations inférieures 306 sous ledit plateau jusqu'au bord avant 311, où il est ensuite aspiré en sens inverse au-dessus du plateau d'exposition. Les ondulations inférieures 306 délimitent avec la paroi supérieure 11 du bâti 1 des conduits de circulation de l'air sous le plateau d'exposition; de plus, elles servent également d'ailettes d'échange thermique entre la surface de la paroi inférieure 304 du plateau d'exposition 301 et l'airventilé. Il en est de même pour les ondulations supérieures 307. Celles-ci permettent en outre de réduire la surface de contact avec les produits exposés, ce qui contribue à une meilleure homogénéité de leur température. De plus, la surface de la paroi supérieure 305 du plateau d'exposition 301 est inclinée vers le bas de l'arrière vers l'avant du plateau, en sorte que l'eau résultant par exemple de la fonte de la pellicule de glace qui recouvre généralement les produits exposés, puisse s'écouler dans le creux des ondulations supérieures 307 qui font office de rigoles. Ensuite, du fait de la déclivité vers l'arrière de la vitrine de la surface supérieure 11 du bâti 1, l'eau peut s'écouler jusqu'à un conduit d'évacuation 6 réalisé dans le piètement 7 du bâti 1. On peut également tirer profit de l'inclinaison du plateau d'exposition 301 et de la surface supérieure 11 du bâti 1 pour nettoyer directement le corps creux 30 et le bâti 1 en injectant de l'eau sous pression à la surface du plateau d'exposition 301, laquelle eau s'écoule ensuite jusqu'au conduit-d'évacuation 6 en entraînant sur son passage toutes les salissures éventuelles.The presentation window also includes means for forced air circulation 4, of the fan type. Said means are fixed to the rear of the display case, behind the vertical part 302 of the hollow body 30. To access these means of forced air circulation, and thereby to the reservoir 303, it suffices to remove the removable plate 8 closing a inspection hatch 9 located at the rear of the display case. The means of forced air circulation 4 create an air flow around the hollow body 30, which forms a loop represented schematically by arrows in FIG. 1. The air is injected under the exposure plate 301 of the body hollow 30, then flows in the direction of the lower corrugations 306 under said plate to the front edge 311, where it is then sucked in opposite direction above the exposure plate. The lower corrugations 306 define, with the upper wall 11 of the frame 1, air circulation ducts under the exposure plate; in addition, they also serve as heat exchange fins between the surface of the bottom wall 304 of the exposure plate 301 and the ventilated air. It is the same for the upper corrugations 307. These also make it possible to reduce the contact surface with the exposed products, which contributes to a better homogeneity of their temperature. In addition, the surface of the upper wall 305 of the exposure plate 301 is inclined downwards from the rear towards the front of the plate, so that the water resulting for example from the melting of the film of ice which generally covers the exposed products, can flow into the hollow of the upper undulations 307 which act as channels. Then, due to the slope towards the rear of the display case from the upper surface 11 of the frame 1, the water can flow to a discharge duct 6 produced in the base 7 of the frame 1. It is possible to also take advantage of the inclination of the exposure plate 301 and the upper surface 11 of the frame 1 to directly clean the hollow body 30 and the frame 1 by injecting pressurized water on the surface of the exposure plate 301 , which water then flows to the evacuation duct 6, driving along any passage of dirt.

Le bord avant 10 du bâti 1 est également muni, sur toute la longueur L du plateau d'exposition 301, d'une pièce 15 recourbée vers le haut. L'air qui arrive au niveau du bord avant 311 du plateau d'exposition 301 traverse l'espace 12 séparant la paroi de déflexion 16 de la pièce 15 et le bord avant 311, et est défléchi vers l'arrière du plateau d'exposition 301 par ladite paroi de déflexion. L'air qui est aspiré au-dessus du plateau d'exposition 301 circule ainsi à proximité de la surface de la paroi supérieure 305 du plateau d'exposition 301 ; les produits exposés sont donc mieux ventilés, et on évite par la même occasion la formation de condensation sur la vitre 2.The front edge 10 of the frame 1 is also provided, over the entire length L of the exposure plate 301, with a part 15 bent upwards. The air which arrives at the front edge 311 of the exposure plate 301 passes through the space 12 separating the deflection wall 16 of the part 15 and the front edge 311, and is deflected towards the rear of the exposure plate 301 by said deflection wall. The air which is sucked above the exposure plate 301 thus circulates near the surface of the upper wall 305 of the exposure plate 301; the exposed products are therefore better ventilated, and at the same time the formation of condensation on the glass 2 is avoided.

On a représenté schématiquement à la figure 1, des moyens d'humidification 14 de l'air fixés à l'intérieur du piétement 7 du bâti 1. De tels moyens sont connus de l'homme du métier. Ils comprennent un récipient contenant un liquide qui est le plus souvent de l'eau, et dans lequel on crée des oscillations à l'aide d'un système ultrasons. L'air situé au-dessus du récipient est donc fortement chargé en humidité, et est ventilé grâce à des moyens de ventilation type ventilateur. Les moyens d'humidification 14 sont reliés à l'extrémité 13a d'un conduit d'humidification 13 pratiqué dans le bâti 1, et dont l'extrémité opposée 13b débouche dans l'espace 12. Ainsi, l'air ventilé par les moyens de circulation forcée de l'air 4 se charge en humidité en traversant l'espace 12, ce qui permet le maintien à un niveau constant du taux d'hygrométrie. Pour améliorer la régulation du taux d'hygrométrie, la partie avant 17 du bâti 1 comporte une cavité (non représentée) qui s'étend sur toute la longueur de la face avant de la vitrine. La partie avant 17 du bâti est percée régulièrement d'orifices (non représentés) qui font communiquer directement ladite cavité intérieure avec l'espace 12. Dans ce cas, l'extrémité 13b du conduit d'humidification débouche dans la cavité de la partie avant 17 du bâti 1. Cette cavité fait alors office de conduit de distribution, sur toute la longueur de la vitrine, de l'air humide ventilé qui est créé par les moyens d'humidification 14.There is shown schematically in Figure 1, humidification means 14 of the air fixed inside the base 7 of the frame 1. Such means are known to those skilled in the art. They include a container containing a liquid which is most often water, and in which oscillations are created using an ultrasound system. The air located above the container is therefore highly charged with humidity, and is ventilated by means of ventilation type fan. The humidification means 14 are connected to the end 13a of a humidification conduit 13 formed in the frame 1, and the opposite end 13b of which opens into the space 12. Thus, the air ventilated by the means forced air circulation 4 is charged with moisture by crossing the space 12, which allows the humidity level to be maintained at a constant level. To improve the regulation of the humidity level, the front part 17 of the frame 1 includes a cavity (not shown) which extends over the entire length of the front face of the display case. The front part 17 of the frame is regularly pierced with orifices (not shown) which directly communicate said interior cavity with the space 12. In this case, the end 13b of the humidification duct opens into the cavity of the front part 17 of the frame 1. This cavity then acts as a distribution duct, over the entire length of the display case, for ventilated moist air which is created by the humidification means 14.

Un problème lié à l'utilisation d'une vitre dans les vitrines de présentation réfrigérées réside dans l'effet de serre créé par le rayonnement ultra-violet sur la vitre, qui a tendance à provoquer un réchauffement de l'intérieur de la vitrine. Pour pallier cet inconvénient, il est usuel d'appliquer à la surface de la vitre un film anti ultra-violet, ce qui permet d'atténuer fortement l'effet de serre. Dans un exemple précis de réalisation, la vitre 2 représentée à la figure 1 est un verre feuilleté, dans lequel on a incorporé au cours du procédé de fabrication, un matériau qui permet de filtrer le rayonnement ultraviolet. A la connaissance du demandeur, un tel traitement n'est pas réalisable avec du verre dit Securit, lequel est jusqu'à présent toujours employé pour la fabrication de vitres de vitrines de présentation réfrigérées. Par ailleurs, l'utilisation de verre feuilleté permet d'obtenir des vitres ayant une forme fortement recourbée, contrairement au verre Securit.A problem linked to the use of a glass in refrigerated display cases lies in the greenhouse effect created by the ultraviolet radiation on the glass, which tends to cause the interior of the window to heat up. To overcome this drawback, it is customary to apply an anti-ultraviolet film to the surface of the glass, which makes it possible to greatly reduce the greenhouse effect. In a specific embodiment, the window 2 shown in Figure 1 is a laminated glass, in which was incorporated during the manufacturing process, a material which filters the ultraviolet radiation. To the knowledge of the applicant, such a treatment cannot be carried out with so-called Securit glass, which has hitherto always been used for the manufacture of windows for refrigerated display cases. In addition, the use of laminated glass makes it possible to obtain panes having a strongly curved shape, unlike Securit glass.

L'invention n'est pas limitée à la description qui vient d'être faite d'un mode de réalisation particulier d'une vitrine de présentation réfrigérée selon l'invention. On peut notamment concevoir une vitrine de présentation du type armoire réfrigérée, comportant soit plusieurs plateaux réfrigérés superposés, soit un unique plateau réfrigéré dont le corps creux est constitué d'une pluralité de plateaux d'exposition superposés les uns aux autres de manière à constituer une étagère. On peut également, sans pour autant sortir du cadre de l'invention, envisager la réalisation d'un corps creux dont le plateau d'exposition possède un bord avant 311 ayant une forme recourbée vers le haut et faisant office de paroi de déflexion. Dans ce cas, la partie avant 309 du plateau d'exposition est percée à proximité du bord avant 311 d'au moins un orifice qui fait office d'espace 12.The invention is not limited to the description which has just been made of a particular embodiment of a refrigerated display case according to the invention. One can in particular design a display case of the refrigerated cupboard type, comprising either several superimposed refrigerated trays, or a single refrigerated tray whose hollow body consists of a plurality of exposure trays superimposed on each other so as to constitute a shelf. It is also possible, without departing from the scope of the invention, to envisage the production of a hollow body whose exposure plate has a front edge 311 having a shape bent upwards and serving as a deflection wall. In this In this case, the front part 309 of the exposure plate is pierced near the front edge 311 of at least one orifice which acts as a space 12.

Claims (4)

1. Vitrine de présentation réfrigérée pour la conservation des produits alimentaires, comportant d'une part un plateau réfrigéré (3) dont une partie au moins constitue un plateau d'exposition (301) qui sert de support aux produits alimentaires, et d'autre part des moyens de circulation forcée de l'air (4), caractérisée en ce que pour créer un flux d'air qui forme une boucle entourant le plateau réfrigéré (3), les moyens de circulation forcée de l'air (4) injectent de l'air sous le plateau réfrigéré (3) et aspirent l'air au-dessus dudit plateau réfrigéré, et le bord (311) du plateau d'exposition (301), qui est opposé à la partie du plateau réfrigéré (3) où se fait l'injection d'air, est contigu d'une paroi de déflexion (16) verticale et recourbée vers le haut, de telle sorte que le flux d'air ascendant qui passe dans l'espace (12) séparant ledit bord (311) et la paroi de déflexion (16) est redirigé en sens inverse vers le dessus du plateau d'exposition (301).1. Refrigerated display case for the preservation of food products, comprising on the one hand a refrigerated tray (3) at least part of which constitutes an exhibition tray (301) which serves as a support for food products, and the other part of the forced air circulation means (4), characterized in that to create an air flow which forms a loop surrounding the refrigerated tray (3), the forced air circulation means (4) inject air under the refrigerated tray (3) and draws the air above said refrigerated tray, and the edge (311) of the exposure tray (301), which is opposite to the part of the refrigerated tray (3) where the air is injected, is contiguous with a deflection wall (16) vertical and curved upwards, so that the upward flow of air which passes in the space (12) separating said edge (311) and the deflection wall (16) is redirected in the opposite direction towards the top of the exposure plate (3 01). 2. Vitrine de présentation selon la revendication 1 caractérisée en ce que toute ou partie de la surface de la paroi inférieure (304) du plateau d'exposition (301) comporte des ondulations dont les crêtes sont parallèles à la direction de circulation du flux d'air.2. Display case according to claim 1 characterized in that all or part of the surface of the lower wall (304) of the exposure plate (301) has undulations whose crests are parallel to the direction of circulation of the flow d 'air. 3. Vitrine de présentation selon la revendication 1 ou 2 caractérisée en ce que toute ou partie de la surface de la paroi supérieure (305) du plateau d'exposition (301) comporte des ondulations dont les crêtes sont parallèles à la direction de circulation du flux d'air.3. Display case according to claim 1 or 2 characterized in that all or part of the surface of the upper wall (305) of the exposure plate (301) has undulations whose crests are parallel to the direction of circulation of the air flow. 4. Vitrine de présentation selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'elle comprend des moyens d'humidification (14) de l'air aptes à créer un flux d'air humide et une canalisation (13) dont une première extrémité (13b) débouche dans l'espace (12) et dont l'extrémité opposée (13a) est reliée aux moyens d'humidification (14).4. Display case according to any one of claims 1 to 3, characterized in that it comprises means for humidifying (14) the air capable of creating a flow of moist air and a pipe (13) a first end (13b) of which opens into the space (12) and the opposite end (13a) of which is connected to the humidification means (14).
EP93401864A 1992-07-23 1993-07-20 Display case with refrigerated shelf Withdrawn EP0580494A1 (en)

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FR9209318 1992-07-23
FR9209318A FR2693891B1 (en) 1992-07-23 1992-07-23 Refrigerated display tray and display case.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2778733A1 (en) 1998-05-12 1999-11-19 Austria Haus Technik Aktienges Refrigerated vending cabinet with twin-walled shelves through which coolant is fed
FR2821730A1 (en) 2001-03-08 2002-09-13 Fun Air Refrigerated display cabinet for food products, uses multiple air circulation fans, which can operate at normal speed to cool the display and a higher speed to quickly defrost the display cabinet

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BE704532A (en) * 1967-09-29 1968-02-01
DE1501301A1 (en) * 1965-04-09 1969-06-26 Siemens Elektrogeraete Gmbh Grate for a cooler
DE2420632A1 (en) * 1974-04-27 1975-11-13 Broecker Ladenbau Kg Deep freeze cabinet modified for drying effect of airstream - by introducing open water reservoir between air cooler and goods display
NL8602780A (en) * 1986-11-03 1988-06-01 Fri Jado Wilmeta B V Refrigerated cabinet displaying foodstuffs in shop - has auxiliary flat cooling plates at base and temp. sensor for air temp. control
GB2247068A (en) * 1990-07-07 1992-02-19 Invicta Plastics Ltd A container for cooling articles such as cans

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US2029860A (en) * 1934-05-05 1936-02-04 Daemicke Company Refrigerator display case
US2068074A (en) * 1934-12-20 1937-01-19 Fay T Rodgers Refrigerator

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1501301A1 (en) * 1965-04-09 1969-06-26 Siemens Elektrogeraete Gmbh Grate for a cooler
BE704532A (en) * 1967-09-29 1968-02-01
DE2420632A1 (en) * 1974-04-27 1975-11-13 Broecker Ladenbau Kg Deep freeze cabinet modified for drying effect of airstream - by introducing open water reservoir between air cooler and goods display
NL8602780A (en) * 1986-11-03 1988-06-01 Fri Jado Wilmeta B V Refrigerated cabinet displaying foodstuffs in shop - has auxiliary flat cooling plates at base and temp. sensor for air temp. control
GB2247068A (en) * 1990-07-07 1992-02-19 Invicta Plastics Ltd A container for cooling articles such as cans

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2778733A1 (en) 1998-05-12 1999-11-19 Austria Haus Technik Aktienges Refrigerated vending cabinet with twin-walled shelves through which coolant is fed
FR2821730A1 (en) 2001-03-08 2002-09-13 Fun Air Refrigerated display cabinet for food products, uses multiple air circulation fans, which can operate at normal speed to cool the display and a higher speed to quickly defrost the display cabinet

Also Published As

Publication number Publication date
FR2693891A1 (en) 1994-01-28
FR2693891B1 (en) 1994-10-14

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