EP0957732B1 - Horizontales und offenes verkaufskühlmöbel für tiefgekühlte oder gekühlte lebensmittel - Google Patents

Horizontales und offenes verkaufskühlmöbel für tiefgekühlte oder gekühlte lebensmittel Download PDF

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Publication number
EP0957732B1
EP0957732B1 EP96937385A EP96937385A EP0957732B1 EP 0957732 B1 EP0957732 B1 EP 0957732B1 EP 96937385 A EP96937385 A EP 96937385A EP 96937385 A EP96937385 A EP 96937385A EP 0957732 B1 EP0957732 B1 EP 0957732B1
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EP
European Patent Office
Prior art keywords
cold air
air
deflector
curtain
flow
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.)
Expired - Lifetime
Application number
EP96937385A
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English (en)
French (fr)
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EP0957732A1 (de
Inventor
Christian Morillon
François Penot
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Individual
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Individual
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Classifications

    • 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
    • A47F3/0439—Cases or cabinets of the open type
    • A47F3/0443—Cases or cabinets of the open type with forced air circulation

Definitions

  • the present invention relates to a refrigeration unit of horizontal and open sale, intended for frozen food or refrigerated.
  • horizontal refrigeration cabinets such as verticals tend to be open, i.e. without protective cover or door, to facilitate and encourage spontaneous purchase of food by consumers.
  • the food are directly exposed to the ambient air which is generally at a temperature of around 25-30 ° C and are subject to infrared radiation from the environment outside that warms them.
  • These refrigeration units have a main circuit cold air to form one or more cold air curtains on the exposed surface of frozen or chilled food, in order to keep them in a satisfactory condition.
  • the aforementioned bathtub is generally materialized by side walls of the refrigeration unit which protrude one certain height the surface of the food.
  • the present invention therefore aims to eliminate the aforementioned drawbacks and to propose a piece of furniture horizontal and open sales refrigerator, intended for frozen or chilled food, ensuring optimal cooling of the latter while limiting the energy expenditure and despite flow rates of the higher cold air flows.
  • the subject of the present invention is a horizontal and open refrigerated sales unit, intended frozen or chilled foodstuffs, of the type comprising a box and a bin inside of it, for storage said foodstuffs, and a main cold air circuit flowing in the space delimited between the box and the tank below and next to it and having cold air blowing nozzles to form at least one curtain of cold air on the surface of commodities that are exposed between two opposite edges of the bin, on one of which are arranged said blowing nozzles, and a return of part of the cold air from said curtain, arranged at the edge opposite to that where the blowing nozzles, to recirculate this part of the cold air in said space, the cold air being blown at such a speed for example of the order of 2 m / s, that the air flow becomes turbulent, a deflector on the other part of the cold air flow from the cold air curtain being provided at level of cold air return to return this part of the air as a relatively mixed air stream colder than the ambient air in the opposite
  • the deflector has section a substantially U-shaped shape whose opening is oriented towards the inside of the cabinet.
  • the deflector has section a shape substantially C flattened or chistera whose opening is oriented towards the inside of the cabinet, the deflector can then also have the function to partially shield infrared radiation.
  • the part upper side of the deflector is fitted with an internal lining and spaced therefrom, said lining defining with said upper part of the deflector a divergent channel or with increasing section in the opposite direction to the flow of cold air flow, which slows the flow velocity of the surface layer of air mixed in the tub and thereby reduces turbulence to the interface between the ambient air and the air loop aforementioned intermediary.
  • the lower part of the deflector is equipped with a separator to separate the air flow drawn in by the main circuit of the mixed air flow returned in reverse in the furniture, thereby reducing the turbulence at the separation zone of the two flows.
  • the separator is a curved plate in the direction of the mixed air flow entering the deflector, said plate being spaced from the lower part of the deflector to define a passage secondary with air intake.
  • the separator is a curved plate towards the cold air flow drawn in by the main circuit, said plate being spaced from the lower part of the deflector to define a passage secondary with air intake.
  • the glazing can be functionally part of the aforementioned deflector.
  • the furniture of the invention comprises a structure with multiple air layers, growing cold, starting for example with a layer of air superficial slowed down to the curtain of cold air main, passing through the mixed air loop relatively cooler intermediate.
  • the refrigerated display cabinet of the invention comprises a double-walled box 1 containing an insulator 2, by polyurethane example, and having for example a shape substantially elongated and open upward defining a horizontal upper opening 3.
  • a tray 4 for the storage of frozen products or refrigerated 5 (shown schematically in Figures 2 to 8) is mounted inside the casing 1, so that a duct 6 for the main circulation of recycled cold air, i.e. defined between the internal wall of the box 1 and the wall outside of tray 4.
  • a suction fan 7 and an evaporator 8 are mounted through the sheath 6, the evaporator being supplied in refrigerant.
  • the aforementioned sheath 6 opens at the opening upper 3 in blowing nozzles 9 which produce at least one curtain of cold air R on the surface of the tank 4.
  • the heat absorbed by the food by radiation from the ambient environment is extracted from these by forced convection between the surface of frozen food or containers in tray 4 and the air curtain cold R.
  • the cold air curtain R is recycled in the duct 6 by suction at an air intake 10.
  • the upper part of box 1 at the recovery cold air 10 here consists of triple glazing vertical transparent 11 for easy viewing of consumer goods.
  • the most internal glazing of the aforementioned triple glazing 11 is functionally part of the deflector D1 of the invention which here comprises an upper wall 12 equipped with an internal lining 13, and a plate separation 14 in the shape of a longitudinal and curved fin downwards or in the direction of the cold air intake, in the vicinity of glazing 11.
  • the profiled fin 14 promotes the directional flow of the cold air curtain R to main circuit 6 and flow of mixed air entrained by the turbulent flow of the curtain R towards the deflector D1 to make it return in direction reverse above curtain R, following loop B.
  • the lining 13 which is in the form of a sheet bent downwards and towards the glazing 11, is spaced therefrom to define a C channel divergent or increasing in section through which passes a layer of superficial mixed air S whose speed is weak to reduce turbulence at the interface with external ambient air.
  • the curved end of the separating fin 14 is also spaced from the glazing 11 to define a passage secondary P1 to main circuit 6.
  • This secondary passage P1 facilitates the separation of cold air flow and air mixed with level of return air.
  • the T-shaped soil has been indicated in Figure 1 to define the orientation of the refrigerated display cabinet supra.
  • the deflector D2 has in section vertical perpendicular to the longitudinal extension of the furniture, a shape substantially flattened C or chistera whose opening is oriented towards the inside of the cabinet.
  • the deflector D2 here extends over a large part of the upper opening 3 of the box 1 to protect partially the foodstuffs 5 of the infrared radiation, whereas in figure 1, the deflector D1 is clearly smaller and confined to the air intake.
  • the deflector D2 here has neither separator nor lining.
  • the deflector D2 could alternatively be much smaller and confined to the level of the return air 10.
  • Figure 3 partially shows yet another mode of the furniture of the invention, in which the deflector D3 has a substantially U-shaped shape whose opening is oriented towards the inside of the cabinet.
  • the deflector D3 here has a larger size than the deflector D1 of Figure 1 and is distinguished from the latter in particular by the fact that the separator 15 is here a plate ensuring a continuous connection both with the inner wall of deflector D3 and with the inner wall of box 1, so the aforementioned passage P1 is here deleted.
  • FIG. 4 represents a variant of the embodiment shown in Figure 3, in which the separator 16 is a profiled fin-shaped plate curved towards the top towards the mixed air flow B.
  • the curved end of the fin 16 is spaced here from the lower part of deflector D3 to define a passage secondary P2 communicating with the main circuit 6.
  • FIG. 5 represents a variant of FIG. 3, in which the separator 14 has a shape substantially identical to that of figure 1.
  • Figure 7 is similar to Figure 6 except that the panel 17 has been deleted and replaced by a transparent plate horizontal, for example glass or plastic such as polymethacrylate, fixed on the deflector D3 in the plane of its upper wall 12, to facilitate viewing food 5.
  • a transparent plate horizontal for example glass or plastic such as polymethacrylate
  • Figure 8 groups together the variants of Figures 6 and 7, with the panel 17 mounted on the aforementioned plate 18.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Freezers Or Refrigerated Showcases (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Claims (5)

  1. Horizontales und offenes Verkaufskühlmöbel bestimmt für gefrorene oder tiefgefrorene Lebensmittel (5) von der Art, umfassend ein Fach und einen Behälter im Innern desselben für die Lagerung der besagten Lebensmittel und einen Hauptströmungskreis der im zwischen dem Fach und dem darunter liegenden Behälter und neben demselben abgegrenzten Raum strömenden Kaltluft und mit Kaltluftgebläsedüsen zur Bildung wenigstens eines Kaltluftvorhangs (R) an der Oberfläche der Lebensmittel, die ihm zwischen zwei gegenüber liegenden Rändern des Behälters ausgesetzt sind, wobei auf einem von ihnen die besagten Kaltluftgebläsedüsen (9) angeordnet sind, und eine Rücknahme (10) eines Teils der Kaltluft des besagten Vorhangs (R), die auf der Höhe des diesem gegenüber liegenden Randes, wo sich die Kaltluftgebläsedüsen befinden, angeordnet ist, um diesen Teil der Kaltluft wieder in den besagten Raum in Umlauf zu bringen, wobei die Kaltluft bei einer derartigen Geschwindigkeit, zum Beispiel in der Größenordnung von 2 m/Sek. geblasen wird, dass der Luftstrom zum Wirbel wird, wobei ein Abweiser (D1, D2, D3) des anderen Teils des Kaltluftstroms des Kaltluftvorhangs auf der Höhe der Rücknahme der Kaltluft (10) vorgesehen ist, um diesen Teil der Luft in Form eines gemischten, relativ kälteren Luftstroms als die Raumluft in umgekehrter Richtung oberhalb des vorgenannten Kaltluftstroms (R) zurückzuführen und dabei eine Schleife gemischter, relativ mittelmäßig kalter Luft (B) zwischen dem Kaltluftvorhang und der Raumluft zu bilden.
  2. Möbel gemäß Anspruch 1, dadurch gekennzeichnet, dass der Abweiser (D1, D3) einen Durchmesser in deutlicher Form eines liegenden Us hat, dessen Öffnung zur Innenseite des Möbels gerichtet ist.
  3. Möbel gemäß Anspruch 1, dadurch gekennzeichnet, dass der Abweiser (D2) einen Durchmesser in deutlicher Form eines abgeflachten Cs oder einer Chistera hat, dessen / deren Öffnung zur Innenseite des Möbels gerichtet ist.
  4. Möbel gemäß einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass der obere Teil (12) des Abweisers mit einer inneren und von diesem entfernten Verkleidung (13) ausgerüstet ist, wobei die besagte Verkleidung (13) mit dem besagten oberen Teil (12) des Abweisers einen divergierenden oder einen Kanal (C) im größer werdenden Abschnitt in gegengesetzter Richtung zur Stromrichtung des Kaltluftstroms (R) definiert.
  5. Möbel gemäß einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass der untere Teil (10) des Abweisers mit einem Abscheider (14, 15, 16) zum Trennen des vom Hauptstrom (6) angesaugten Luftstroms ausgerüstet ist.
EP96937385A 1995-11-10 1996-10-31 Horizontales und offenes verkaufskühlmöbel für tiefgekühlte oder gekühlte lebensmittel Expired - Lifetime EP0957732B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9513359 1995-11-10
FR9513359A FR2741141B1 (fr) 1995-11-10 1995-11-10 Meuble frigorifique de vente horizontal et ouvert, destine aux denrees surgelees ou refrigerees
PCT/FR1996/001725 WO1997017003A1 (fr) 1995-11-10 1996-10-31 Meuble frigorifique de vente horizontal et ouvert, destine aux denrees surgelees ou refrigerees

Publications (2)

Publication Number Publication Date
EP0957732A1 EP0957732A1 (de) 1999-11-24
EP0957732B1 true EP0957732B1 (de) 2002-08-14

Family

ID=9484456

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96937385A Expired - Lifetime EP0957732B1 (de) 1995-11-10 1996-10-31 Horizontales und offenes verkaufskühlmöbel für tiefgekühlte oder gekühlte lebensmittel

Country Status (4)

Country Link
EP (1) EP0957732B1 (de)
DE (1) DE69623061T2 (de)
FR (1) FR2741141B1 (de)
WO (1) WO1997017003A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2786999B1 (fr) 1998-12-09 2001-02-23 Nevoret Concept Meuble frigorifique de vente
CN103720244A (zh) * 2013-12-19 2014-04-16 大连三洋冷链有限公司 热泵式的冷热双温陈列柜
US9861213B2 (en) 2014-11-13 2018-01-09 The Vollrath Company, L.L.C. Forced cold air well with false bottom insert

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR965379A (de) * 1950-09-11
US2447759A (en) * 1941-10-20 1948-08-24 C V Hill & Company Inc Open top access refrigerated display case
FR2276545A1 (fr) * 1974-06-24 1976-01-23 Linde Ag Congelateur
US4628697A (en) * 1985-09-20 1986-12-16 Convex Display Systems, Inc. Air-flow temperature and humidity management for maintaining freshness of delicate produce

Also Published As

Publication number Publication date
DE69623061D1 (de) 2002-09-19
EP0957732A1 (de) 1999-11-24
FR2741141A1 (fr) 1997-05-16
DE69623061T2 (de) 2003-03-20
FR2741141B1 (fr) 1998-01-02
WO1997017003A1 (fr) 1997-05-15

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