EP0607492A1 - Couverture pour réfrigérateur - Google Patents

Couverture pour réfrigérateur Download PDF

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Publication number
EP0607492A1
EP0607492A1 EP93109386A EP93109386A EP0607492A1 EP 0607492 A1 EP0607492 A1 EP 0607492A1 EP 93109386 A EP93109386 A EP 93109386A EP 93109386 A EP93109386 A EP 93109386A EP 0607492 A1 EP0607492 A1 EP 0607492A1
Authority
EP
European Patent Office
Prior art keywords
refrigerator
web
roller blind
cabinet cover
cover according
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.)
Ceased
Application number
EP93109386A
Other languages
German (de)
English (en)
Inventor
Paul Dipl.-Ing. Isfort
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.)
Remis Gesellschaft fuer Entwicklung und Vertrieb von Technischer Elemente mbH
Original Assignee
Remis Gesellschaft fuer Entwicklung und Vertrieb von Technischer Elemente mbH
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 Remis Gesellschaft fuer Entwicklung und Vertrieb von Technischer Elemente mbH filed Critical Remis Gesellschaft fuer Entwicklung und Vertrieb von Technischer Elemente mbH
Priority to DE9321027U priority Critical patent/DE9321027U1/de
Publication of EP0607492A1 publication Critical patent/EP0607492A1/fr
Ceased legal-status Critical Current

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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
    • A47F3/0469—Details, e.g. night covers

Definitions

  • the invention relates to a refrigerator and in particular a freezer for groceries or the food departments for department stores.
  • Frozen foods are offered in stores in refrigerators where they are kept at freezing temperature. Refrigerators of this type have an access opening which is kept open during business hours so that customers can remove the goods. During the night, the refrigeration units are closed with a cover to avoid unnecessary cold losses. Cold losses occur due to heat radiation, heat conduction and convection. In freezers with the access opening at the top, a cold lake of air is formed without buoyancy due to thermal convection. The convection losses are therefore negligible. The heat conduction losses can also be kept low by insulating linings. The greatest losses arise from heat radiation. These radiation losses depend on the emission coefficients of the radiation sources facing each other, as well as on the power of four of the temperature difference of these radiation sources. When the refrigerated cabinet is open, the cold radiation source is formed by the refrigerated goods or the walls of the cold room and the warm radiation source by the surroundings, for example the ceiling above the freezer. When the refrigerator is closed, the cover forms the warm radiation source.
  • a cover which has a low emission coefficient.
  • a cover consists of a plastic film, which is provided on its side facing the refrigerator with a metal coating which has the low emission coefficient.
  • the metal layer prevents heat radiation from the outside into the cooling space and reflects a large proportion of the heat radiation emitted by the cooling space. Since emission and absorption are reversible processes, the absorption coefficient of the metal layer is the same as the emission coefficient.
  • the outside of the cover is formed by a plastic layer with a high emission coefficient. This plastic film absorbs a large part of the heat radiation coming from the room and almost reaches room temperature.
  • the relatively cold metal layer transfers the cold to the plastic film, the temperature of which is significantly lower than the temperature of the surrounding room.
  • condensation forms on the plastic film.
  • Air movements in the surrounding room which can also be caused by fans, constantly introduce new room air to the cover, the steam contained in the room air being condensed on the cover as condensation.
  • Such a precipitation of moisture leads to moisture penetrating into the receiving space. If the cover is pushed back when the store opens, the condensation must first be wiped off.
  • the invention has for its object to provide a normally open, lockable by a cover refrigeration, in which condensation on the cover can be avoided.
  • the refrigeration cabinet according to the invention there is a two-layer cover, the two layers being at a mutual distance from one another. It is thereby achieved that the air layer located in the gap between the layers is at rest, so that air which does not constantly contain new moisture is carried to the layer facing the receiving space.
  • the double layer forms a chamber in which the standing air is not or only slightly influenced by external air currents. It contains a standing layer of air, which also forms an insulating air cushion. This will prevent condensation prevented both on the layer facing the receiving space and on the outer layer.
  • the two layers are preferably combined in a path which is deflected by a deflection device.
  • the web can be wound onto a roller blind device and the deflection device causes the tensioning of the two webs so that they assume a substantially parallel state.
  • the invention also addresses the problem of creating a refrigerator cover in which the flexible web can be extended and retracted by a motor.
  • the refrigeration cabinet cover has a carrying device fixedly attached to refrigeration cabinet and a movable holding device for the material web.
  • the carrying device includes a motor capable of pulling the holding device towards the carrying device. If the motor is operated in the opposite direction, a tensioning device pushes the holding device away from the carrying device, so that the material web is tensioned over the refrigerator opening. No changes to the edge of the refrigerator opening are required.
  • the holding device which holds the end of the material web, can slide with its ends on the lateral edges of the refrigerator cover. Special guiding devices or drive devices are not required on the edges of the refrigerator openings.
  • the motor drive of the refrigerator cover has the advantage that the cover of the refrigerator can be made automatically by a timer, so that it is ensured that the refrigerator is in the closed state at night.
  • FIG. 1 two refrigerator covers 10,11 are shown, which are arranged back to back on the central web 12 of a freezer 13.
  • the freezer 13 has two receiving spaces 14 which are separated from one another by the central web 12. It is a freezer that is placed in shops and can be several meters long.
  • the cooling units and other cooling devices are not shown here.
  • Each receiving space 14 is delimited by a bottom wall and by side walls which are designed to be heat-insulating in order not to let the cold contained in the receiving spaces escape.
  • Each receiving space 14 is open at the top. At the upper end there is the access opening 15, which allows the customer to take refrigerated goods out of the receiving space.
  • Each of the refrigerator covers 10 and 11 has a roller blind device 16 with a roller 17 on which a web 18 is wound.
  • the roller and the web extend over the entire length of the freezer 13.
  • the roller 17 can be driven by a motor (not shown).
  • a horizontally extendable deflection device 19 is mounted under the roller 17, which can span the entire width of the access opening 15, but in the retracted state it opens the access opening.
  • the end 18a of the web 18 is fixedly attached to the housing of the refrigerator cover under the deflection device 19, while the roller 17 is located above the deflection device.
  • the deflection device 19 has a rounded head strip 20 or a rotatably mounted roller around which the web 18 is deflected.
  • the header 20 is on a lever mechanism 21 attached, which is biased by springs (not shown) in the extended position.
  • This lever mechanism 21 has joints 21a and is designed similarly to that of a sun protection awning.
  • Fig. 2 shows the refrigerator cover 10 in the extended state.
  • the deflection device 19 covers the receiving space 14, a first layer 22 of the web 19 running directly above the access opening 15, then being deflected by 180 ° by the header 20 and adjoined by a second layer 23 which is at a distance above the first layer 22 runs and leads to the roll 17.
  • the web 18 presses against the head bar 20 and the deflection device 19 is compressed and retracted against the force of its pretension until the state shown in FIG. 1 is reached.
  • the web 18 is extended in such a way that the motor is driven and the roller 17 rotates in the unwinding direction.
  • the deflection device 19 then follows the pocket formed by the web 18 due to its spring preload.
  • the lever arm pairs of the lever mechanism bring about an end face sealing of the intermediate space 40 enclosed by the web 18.
  • This intermediate space 40 preferably has a height of at least 3 cm in order to obtain a good thermal protection effect.
  • the web 18 has a plastic film 24.
  • the plastic film is covered on its side facing the receiving space 14 with a metal layer 25a.
  • the upper track 23 is also on its side facing the receiving space 14 a metal layer 25b.
  • the sides facing away from the receiving space 14 are thus formed by the film 24 in both layers.
  • the metal layer 25b is arranged on the side which points outwards when it is wound onto the roll 17.
  • the metal foil 25a is arranged on the side which points inwards when the roll 17 is wound up.
  • the transition point 26 between the two layers 22 and 23 is located at the point which, when the deflection device 18 is fully extended, is in the region of the head strip 20.
  • the arrangement of the metal layers 25a and 25b described also has the advantage that there is no abrasion of the metal layer on the head strip 20 when the lever mechanism 21 is extended and retracted.
  • Fig. 4 shows the design of the two refrigeration cabinet covers.
  • the roller 17 of each cover is housed in a housing 30 which is formed from an angle profile 21 and a locking profile 32 engaging therewith.
  • the angle profile 31 is attached to a vertical wall of the freezer.
  • the closure profile 32 can be pivoted about a joint 33 at the end of the upright back leg of the angle profile and it forms a gap 34 for the passage of the deflection device 19 with the end of the support leg of the angle profile.
  • two housings 30 are placed with their back profiles against one another, so that the deflection devices 19 can be extended towards opposite ends.
  • FIG. 5 shows another embodiment of the roller blind device 16a, the roller blind device 16a including two rollers 17a and 17b, each of which is wound up Track 35 and 36 carries, which can be pulled against the action of a winding spring.
  • Each of the tracks 35, 36 consists of a plastic film which is provided with a metal coating on its side facing the receiving space 14. The ends of the two webs 35 and 36 are connected to one another by a spacer 37 and the webs are spaced about 10 cm apart at all points.
  • each refrigerator cover 40 has a carrying device 42, which is fastened on the central web and has an elongated housing 43, in which a roller blind device is accommodated.
  • the roller blind device 44 contains a shaft 45 on which the material web 46 is rolled up.
  • the shaft 45 is a motor shaft that includes an electric motor 47 that drives the shaft 45.
  • the free end of the material web 46 is fastened to a holding device 47 which can be moved over the refrigerator opening.
  • the holding device 47 is guided on a tensioning device 48 which is designed in the manner of an awning holder.
  • the tensioning device 48 is fastened at one end to the carrying device 42 and has a handlebar linkage consisting of two links 50, 51 connected by a joint 49.
  • the link 50 is attached to the carrying device 42 via a joint 52 and the link 51 via a link 53 to the holding device 47.
  • a tension spring 54 pulls the link 50 into the extended position in which it protrudes from the opening of the carrying device 42.
  • the spring 54 causes the tensioning device 48 to drive the holding device 47 into the extended state and pull the material web 46 over the refrigerator opening.
  • the holding device 47 contains a spring-loaded shaft 55, on which a further material web 56 is rolled up. The free end of this material web 56 is fastened to the housing of the carrying device 42.
  • the attachment is carried out with a releasable hooking device 57.
  • the motor 47 When the motor 47 is driven in one direction of rotation, it releases the material web 46 so that the tensioning device 48 can press the holding device 47 outwards.
  • the material web 46 unwinds from the shaft 45.
  • the material web 56 unwinds from the shaft 55 while overcoming the spring tension of the shaft 55.
  • the material web 56 lies under the material web 46. Both material webs are provided with a metal coating on their underside.
  • a single web of material can also be present.
  • the material web 46 omitted and only the lower material web 56 is present.
  • the upper material web 46 there is a pulling device which is driven by the motor 47 and moves the holding device 47.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Freezers Or Refrigerated Showcases (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP93109386A 1993-01-20 1993-06-11 Couverture pour réfrigérateur Ceased EP0607492A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9321027U DE9321027U1 (de) 1993-01-20 1993-06-11 Kühlmöbelabdeckung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4301360 1993-01-20
DE19934301360 DE4301360A1 (de) 1993-01-20 1993-01-20 Kühlmöbelabdeckung

Publications (1)

Publication Number Publication Date
EP0607492A1 true EP0607492A1 (fr) 1994-07-27

Family

ID=6478532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93109386A Ceased EP0607492A1 (fr) 1993-01-20 1993-06-11 Couverture pour réfrigérateur

Country Status (2)

Country Link
EP (1) EP0607492A1 (fr)
DE (1) DE4301360A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6438534B1 (en) 1996-06-21 2002-08-20 Siemens Aktiengesellscaft Process and system for commissioning industrial plants, in particular in the primary industry
US9372025B2 (en) 2012-10-22 2016-06-21 Anthony, Inc. Covers for refrigeration systems

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4769497A (en) * 1996-11-19 1998-06-10 Eem Tecnica Holding Ag Method for avoiding unacceptable temperatures in chest freezers and chest freezer for the implementation of the method
DE20101977U1 (de) * 2001-02-06 2002-06-13 Remis Gmbh Kühlregal

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR956848A (fr) * 1950-02-08
EP0015411A1 (fr) * 1979-03-01 1980-09-17 Remis Gesellschaft für Entwicklung und Vertrieb von technischen Elementen mit beschränkter Haftung Feuille en matériau isolant
US4275645A (en) * 1978-07-10 1981-06-30 Expertise Assistance Inc. Closure for service opening
EP0152859A2 (fr) * 1984-02-17 1985-08-28 Linde Aktiengesellschaft Coffre de vente réfrigéré
DE8030666U1 (de) * 1980-11-15 1985-09-12 Coprex & Co Energiesparsysteme GmbH, 5500 Trier Nachtblende für Tiefkühlregale u.dgl.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2031498B (en) * 1978-09-27 1982-11-10 Teijin Ltd Multi-pane window structure
DE3620948A1 (de) * 1986-06-23 1988-01-07 Linde Ag Kuehlmoebel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR956848A (fr) * 1950-02-08
US4275645A (en) * 1978-07-10 1981-06-30 Expertise Assistance Inc. Closure for service opening
EP0015411A1 (fr) * 1979-03-01 1980-09-17 Remis Gesellschaft für Entwicklung und Vertrieb von technischen Elementen mit beschränkter Haftung Feuille en matériau isolant
DE8030666U1 (de) * 1980-11-15 1985-09-12 Coprex & Co Energiesparsysteme GmbH, 5500 Trier Nachtblende für Tiefkühlregale u.dgl.
EP0152859A2 (fr) * 1984-02-17 1985-08-28 Linde Aktiengesellschaft Coffre de vente réfrigéré

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6438534B1 (en) 1996-06-21 2002-08-20 Siemens Aktiengesellscaft Process and system for commissioning industrial plants, in particular in the primary industry
US9372025B2 (en) 2012-10-22 2016-06-21 Anthony, Inc. Covers for refrigeration systems
US9829239B2 (en) 2012-10-22 2017-11-28 Anthony, Inc. Covers for refrigeration systems

Also Published As

Publication number Publication date
DE4301360A1 (de) 1994-07-21

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