EP0931994A2 - Gefriergerät, insbesondere ein Gewerbegefrierbehälter zum Auslegen und Lagern von gefrorenen Waren - Google Patents

Gefriergerät, insbesondere ein Gewerbegefrierbehälter zum Auslegen und Lagern von gefrorenen Waren Download PDF

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Publication number
EP0931994A2
EP0931994A2 EP98610051A EP98610051A EP0931994A2 EP 0931994 A2 EP0931994 A2 EP 0931994A2 EP 98610051 A EP98610051 A EP 98610051A EP 98610051 A EP98610051 A EP 98610051A EP 0931994 A2 EP0931994 A2 EP 0931994A2
Authority
EP
European Patent Office
Prior art keywords
freezer
air
frame
lids
duct
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Withdrawn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
EP98610051A
Other languages
English (en)
French (fr)
Other versions
EP0931994A3 (de
Inventor
Ole Poulsen
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.)
Caravell AS
Original Assignee
Caravell AS
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 Caravell AS filed Critical Caravell AS
Publication of EP0931994A2 publication Critical patent/EP0931994A2/de
Publication of EP0931994A3 publication Critical patent/EP0931994A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate
    • 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
    • A47F3/0404—Cases or cabinets of the closed type
    • A47F3/0426—Details
    • A47F3/0434—Glass or transparent panels

Definitions

  • the present invention relates to a freezer, in particular a commercial freeze box for the display and storage of frozen products, e.g. edible ice, and provided with transparent lids in connection with a frame defining the opening of the freezer, and with an incorporated compressor in a compressor compartment intended therefor and communicating with the surroundings.
  • frozen products e.g. edible ice
  • transparent lids in connection with a frame defining the opening of the freezer, and with an incorporated compressor in a compressor compartment intended therefor and communicating with the surroundings.
  • misting may occur on the top side of the glass lid of a chest freezer, which is undesirable because it entirely or partly blocks the view of the contents in the freeze box.
  • Glass lids provided with a heat reflecting coating (EP 0 236 286 B1, DE 37 42 693 C2) to reduce the energy consumption of the freezer, remedy the problem to some extent, and the same applies to glass lids provided with thermo-pane glass. The latter, however, are so heavy that the operation is impeded.
  • a solution to remedying misting comprises passing a condenser pipe right up to the upper edge of the side wall of the freezer, right up in the frame. This, however, does not prevent misting of the glass lids in any event, and particularly not if the glass panels are mounted in a plastics frame which breaks the intended heat transfer to the glass panels.
  • Another solution comprises mounting electrical heating elements or decided heating of the glass lids in the form of electrically heated glass, which per se is flagrantly inconsistent with the function of a freezer, and it moreover consumes much energy.
  • US 2 542 136 A discloses a refrigerated display case, in which air is conveyed from the compressor compartment via an air duct in the rear side of the case to the upper edge of the sliding lids. Another solution comprises conveying air from the side of the lids horizontally inwardly over these. A somewhat more elegant solution comprises dividing the glass lids into sections by means of bars, which are utilized for conveying the air across the lids. Finally, the air may be conveyed via air ducts to the lower edge of the lids.
  • US 2 696 087 A which concerns a freeze box
  • the air is conveyed from the compressor compartment via an outer duct on the rear side of the freezer up to an air distribution duct on the top side of the freezer.
  • the amount of air and the direction of the air may be adjusted by means of a specially constructed revolving damper.
  • US 4 741 172 A discloses a refrigerated display case in which the air is conveyed from the compressor compartment out on the rear side of the freezer. Side-defining projections and the wall against which the freezer is mounted, define a duct behind the freezer through which the air is passed upwards. At the top side of the freezer, the air is drawn by a fan into a duct defined by the insulation and the top side of the case.
  • duct conveys the air to the front side of the lids where the duct ends in a plurality of air nozzles.
  • WO 87/3671 discloses a refrigerated display case in which the air is conveyed from the compressor compartment through a duct below the bottom to the lower edge of the glass pane.
  • US 4 949 554 discloses a refrigerated display case in which the air is conveyed from the compressor compartment through an air duct, which extends in the entire front side of the case, and from which the air is passed via a gap upwards over the sliding lids. It is common to these structures that the air is conveyed via separate ducts forwardly to and is distributed along the lids or the panes. The ducts are relatively complicated and affect the structure and the appearance.
  • the object of the invention is to provide a simpler, but still effective solution to the problem of misting of the lids with a flow of air.
  • the frame is provided with an air duct with air nozzles to pass the flow of air across the top side of the lids.
  • an air duct at the top of the frame with a horizontal partition in the existing frame profiles, which are typically of extruded aluminium.
  • the transverse wall has the additional advantage that it makes the frame profile more rigid, which is an advantage in the production of the freezers.
  • the air nozzles which may quite simply be holes or slots, are quite close to the glass lids, just as the structure does not interfere with the overall appearance and structure of the freezer.
  • the fan assembly is formed by a fan arranged in the compressor compartment of the freezer and connected with the air duct in the frame.
  • the required amount of air may be made correspondingly smaller, which in turn allows a smaller fan to be used, which in turn means that the energy consumption for preventing misting of the lids may be kept down.
  • the energy consumption may be reduced additionally when, in the shops in which the box is installed, the fan is turned off outside regular business hours.
  • the fan may moreover be controlled by a dew point meter, so that the fan starts only when moisture is registered on the glass lids.
  • a filter may be mounted in front of the fan, said filter being expediently arranged so as to be accessible from the outer side of the freezer. It is noted that the positive pressure in the ducts contributes to keeping the blow holes in the ducts clean.
  • the freeze box comprises two sliding glass lids 1, 2 in a frame 3 as a termination of the side walls 4 of the box and additionally defining the opening of the freeze box.
  • a fan 6 is arranged in the ceiling of the compressor compartment 5 of the box, said fan being connected with a pipe 7 to an air duct 8 at the top of the frame 3.
  • the air duct is provided by a horizontal transverse wall 9 in the frame.
  • the transverse wall has a stiffening effect which makes it easier to handle the profile in the production of the freezer.
  • the freeze box is a so-called inclined box, i.e. with an inclined opening, it having been found by experience that the problem of misting occurs at the low side of the freezer and only on the lowest glass lid 2.
  • the frame 3 is provided with a plurality of nozzle holes 10 at the lowest side of the box adjacent the lowest glass lid 2, air being passed from said nozzle holes across the lid.
  • the holes are graduated in size so as to produce an even air flow as an air curtain inwardly across the lid.
  • the air in the compressor compartment has a higher temperature than the surrounding air because of the waste heat from the compressor. In some situations the temperature may be so high that actual cooling of the compressor with a fan is required.
  • the glass lid By utilizing the warm air from the compressor compartment, the glass lid may effectively be kept free from misting on the top side with a relatively modest amount of air.
  • the necessary fan may thus be correspondingly small and not very energy-consuming.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
EP98610051A 1998-01-27 1998-12-23 Gefriergerät, insbesondere ein Gewerbegefrierbehälter zum Auslegen und Lagern von gefrorenen Waren Withdrawn EP0931994A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK11498A DK11498A (da) 1998-01-27 1998-01-27 Fryseboks med luftafdugning af glaslåg
DK11498 1998-01-27

Publications (2)

Publication Number Publication Date
EP0931994A2 true EP0931994A2 (de) 1999-07-28
EP0931994A3 EP0931994A3 (de) 1999-12-15

Family

ID=8089912

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98610051A Withdrawn EP0931994A3 (de) 1998-01-27 1998-12-23 Gefriergerät, insbesondere ein Gewerbegefrierbehälter zum Auslegen und Lagern von gefrorenen Waren

Country Status (2)

Country Link
EP (1) EP0931994A3 (de)
DK (1) DK11498A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008001432U1 (de) * 2007-12-27 2009-05-07 Liebherr-Hausgeräte Lienz Gmbh Kühl- und/oder Gefriergeät
WO2010064938A1 (en) * 2008-12-05 2010-06-10 Skope Industries Limited Improvements in openface coolers

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2542136A (en) * 1949-01-10 1951-02-20 Edwin O Hanson Means for preventing condensation of moisture on refrigerator windows
US2672735A (en) * 1951-10-08 1954-03-23 Harriet V Jones Condensation preventing means for display cases
US3462966A (en) * 1967-12-05 1969-08-26 Beverage Air Co Condensation removing means for refrigerated cabinets
US4009586A (en) * 1975-02-03 1977-03-01 Skvarenina John A Method and apparatus for preventing condensation from forming about the periphery of a freezer door
NL8400776A (nl) * 1984-03-09 1985-10-01 Hendrik Koster Inrichting voor het droog houden van koude oppervlakken van gekoelde toonmeubels met behulp van lucht uit de omgeving.
US4741172A (en) * 1985-08-26 1988-05-03 Sanden Corporation Refrigerated display cabinet
DE3722349C1 (de) * 1987-07-07 1988-04-07 Flachglas Ag Verfahren zum Entfernen des innenseitigen,die Transparenz beeintraechtigenden Kondensationsbeschlages auf der Verglasung eines Kuehlmoebels und Kuehlmoebel zur Durchfuehrung des Verfahrens
US4949554A (en) * 1989-09-08 1990-08-21 Specialty Equipment Companies, Inc. Single pane, curved glass lid, frozen food merchandiser
US4977754A (en) * 1990-05-01 1990-12-18 Specialty Equipment Companies, Inc. Next-to-be-purchased cold beverage merchandiser
IE77874B1 (en) * 1995-11-07 1998-01-28 Orrell Ltd Manufacture of a refrigerated merchandising unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008001432U1 (de) * 2007-12-27 2009-05-07 Liebherr-Hausgeräte Lienz Gmbh Kühl- und/oder Gefriergeät
WO2010064938A1 (en) * 2008-12-05 2010-06-10 Skope Industries Limited Improvements in openface coolers
AU2009323085B2 (en) * 2008-12-05 2014-05-22 Skope Industries Limited Improvements in openface coolers

Also Published As

Publication number Publication date
EP0931994A3 (de) 1999-12-15
DK11498A (da) 1999-07-28

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