EP1275919A1 - Présentoir frigorifique - Google Patents

Présentoir frigorifique Download PDF

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Publication number
EP1275919A1
EP1275919A1 EP01650081A EP01650081A EP1275919A1 EP 1275919 A1 EP1275919 A1 EP 1275919A1 EP 01650081 A EP01650081 A EP 01650081A EP 01650081 A EP01650081 A EP 01650081A EP 1275919 A1 EP1275919 A1 EP 1275919A1
Authority
EP
European Patent Office
Prior art keywords
frame
heating element
merchandising unit
unit
merchandising
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Withdrawn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
EP01650081A
Other languages
German (de)
English (en)
Inventor
Liam Geoghegan
Michael Mulligan
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.)
Orrell Ltd
Original Assignee
Orrell Ltd
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 Orrell Ltd filed Critical Orrell Ltd
Priority to EP01650081A priority Critical patent/EP1275919A1/fr
Publication of EP1275919A1 publication Critical patent/EP1275919A1/fr
Withdrawn legal-status Critical Current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
    • F25D23/00—General constructional features
    • F25D23/08—Parts formed wholly or mainly of plastics materials
    • F25D23/082—Strips
    • F25D23/085—Breaking strips
    • 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
    • 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
    • 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
    • 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
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/061—Walls with conduit means
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/10—Refrigerator top-coolers

Definitions

  • the present invention relates to a refrigerated merchandising unit of the chest type comprising: insulated base and side walls terminating in an open mouth and having inner panels of heat conducting material; evaporator tubes forming part of a refrigeration unit, housed in the insulated walls and base; a frame of low heat conducting material forming the open mouth; and a closure lid mounted in the frame.
  • refrigerated merchandising units are used extensively in supermarkets and retail outlets generally for the storage and display of foodstuffs.
  • the lid of the unit is either a tilting hinged lid or a sliding lid formed of more than one sliding panel, usually two which meet in the centre of the chest intermediate the ends.
  • the product within the unit must be held at a temperature of the order of -18°C.
  • the refrigerated merchandising unit while it has a certain amount of freezing capacity, has as its main purpose the ability to retain products that are placed in the unit at the desired temperature of below -18°C, such that they will not exceed this temperature. All such units are marked with a load limit line above which products must not be placed.
  • the first problem arises with the build up of ice in the unit above the load limit line and particularly on the frame surrounding the open mouth of the unit. There are two problems with the build up of such ice.
  • the first problem is that it is aesthetically unpleasing and the second problem is that it can cause difficulties with the closure lid.
  • the closure lid is a hinged lid, this is often not a great problem because hinged lids tend to have a better sealing capacity than sliding lids, however, in many countries a sliding lid is the preferred merchandising option. Sliding lids by their very construction tend to be less easy to seal against the ingress of air than pivoting lids.
  • the second problem is one of condensation.
  • the ingress of moist air will result in condensation being formed.
  • This moisture is both aesthetically unpleasing and unhygienic. It can occur on both the sliding and the hinged lids.
  • the present invention is directed to overcoming these problems.
  • a refrigerated merchandising unit of the chest type comprising: insulated base and side walls terminating in an open mouth and having inner panels of heat conducting material; evaporator tubes forming part of a refrigeration unit, housed in the insulated walls and base; a frame of low heat conducting material forming the open mouth; and a closure lid mounted in the frame; characterised in that a heating element is mounted around the frame.
  • the frame is a two-part frame comprising an outer lid mounting part and an inner thermal barrier connecting the frame to the side walls.
  • a heating element is mounted adjacent to the thermal barrier.
  • the heating element provides different heat outputs at different locations around the frame where the ingress of air is more likely to occur.
  • the open mouth is rectangular and the heating element provides the greatest heat output adjacent to the corners of the frame.
  • the open mouth is rectangular; the lid comprises a plurality of sliding lid sections; and the heating element provides the greatest heat output adjacent the corners of the frame and where the lid sections meet when the unit is closed.
  • the frame houses a temperature sensor, connected to a controller in turn connected to a power source for operating the heating element.
  • the heating element is connected to a timer.
  • the heating element is removably mounted on the inwardly facing surface of the frame.
  • the frame comprises: a resilient plastics material; an inwardly facing re-entrant slot around its periphery for reception of heating element and a closure for the slot.
  • the heating element is a strip heater comprising a heating wire housed within an elongate flexible strap-like body.
  • the evaporator tubes extend up the side walls to adjacent the frame.
  • a prior art refrigerated merchandising unit indicated generally by the reference numeral 1, comprising upstanding rectangular insulated side walls 11 and a insulated base wall 12 housing insulation material 13 and evaporator tubes 14 forming part of a refrigeration unit not shown.
  • the insulated side walls 11 and an insulated base wall 12 are formed by an outer cabinet body housing an inner liner cabinet which is formed of panels 15 of a high heat conducting material.
  • the outer skin, as it were, of the side walls 11 and base walls 12 is formed from further panels 16.
  • the merchandising unit 1 has an open mouth 20 for reception of a closure lid (not shown).
  • the open mouth 20 is surrounded by a frame 21 having depending open resilient slots 22 and 23 for reception of the panels 15 and 16 respectively.
  • Fine temperature probes which were used for tests as will be described below, were temporarily placed in the merchandising unit and are identified by the circled numerals 3, 4 and 5 in Fig. 1.
  • a refrigerated merchandising unit according to the invention, indicated generally by the reference numeral 10. Parts similar to those described with reference to the previous drawing are used to identify the same parts.
  • the frame member is again identified by the reference numeral 21 and is a two part.
  • the frame member 21 additionally comprises an inner thermal barrier 31 of a low heat conducting material which engages within the depending slot 22 and itself has a depending slot 32 for engagement with the panels 15. Effectively the thermal barrier turns the frame into a two part frame.
  • Heating elements 35, 36, 37 and 38 are mounted behind the frame 21 and thermal barrier 31. The heating elements 35 and 36 are connected to suitable sources of supply and/or to a control unit.
  • some or all of the heating elements 35, 36, 37 and 38 are used to ensure that there is a sharp rise in temperature between the top of the panels 15 and open mouth 20.
  • FIG. 3 there is illustrated an alternative construction or portion of a frame according to the invention, again identified by the reference numeral 21.
  • the frame member 21 is of a resilient plastics material and has an inwardly facing re-entrant slot 40 housing a heating element in the form of a resistance wire 41 which can be pushed home within the re-entrant slot.
  • the re-entrant slot 40 is closed by a resilient cap 42.
  • Fig. 4 shows a still further construction of frame, again identified by the reference numeral 40 in which there is provided a heating element 45 which is a strap or strip heater indicated therein by the reference numeral 45 comprising of an elongated strap like body 46 housing a heating wire 47 spirally wound therein.
  • a heating element 45 which is a strap or strip heater indicated therein by the reference numeral 45 comprising of an elongated strap like body 46 housing a heating wire 47 spirally wound therein.
  • the frame has been illustrated as constructed as a two part frame, it will be appreciated a one piece simple frame similar to the frame of Fig. 1 may be used with suitable elements. It is also envisaged that possibly one heating element may be sufficient in many instances, or indeed that more than one heating element may be used. It is also envisaged that various control means and temperature sensors may be used to control the amount of heat supplied. Further, it is envisaged that various types of heating element may be used.
  • heat may be provided using alternative heat sources such as light fitting.
  • One of the advantages of the present invention is that it is possible to have the evaporator coils extending up the unit and the frame and thus much higher in the cabinet than is possible with some conventional merchandising units that also incorporate a thermal barrier between the frame and the thermally conductive panels. The higher up in the merchandising unit that the evaporator coils may be placed, the higher up the load limit line can be.
  • the present invention in addition to providing a merchandising unit that greatly reduces condensation and ice build up, also provides a merchandising unit with increased capacity as heretofore the need to prevent condensation and ice build up effectively meant that the load limit line had to be kept relatively low within the merchandising unit and various thermal barriers had to be incorporated in the merchandising unit to ensure an adequate frame temperature.

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  • 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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP01650081A 2001-07-13 2001-07-13 Présentoir frigorifique Withdrawn EP1275919A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01650081A EP1275919A1 (fr) 2001-07-13 2001-07-13 Présentoir frigorifique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01650081A EP1275919A1 (fr) 2001-07-13 2001-07-13 Présentoir frigorifique

Publications (1)

Publication Number Publication Date
EP1275919A1 true EP1275919A1 (fr) 2003-01-15

Family

ID=8183601

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01650081A Withdrawn EP1275919A1 (fr) 2001-07-13 2001-07-13 Présentoir frigorifique

Country Status (1)

Country Link
EP (1) EP1275919A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10357864A1 (de) * 2003-12-11 2005-07-21 Koenig & Bauer Ag Einrichtung zum Erfassen der Lage einer Kante eines bogenförmigen Verarbeitungsgutes
WO2009003636A1 (fr) * 2007-06-29 2009-01-08 Liebherr-Hausgeräte Lienz Gmbh Appareil de réfrigération et/ou de congélation
EP2808629A1 (fr) * 2013-05-29 2014-12-03 REMIS Gesellschaft für Entwicklung und Vertrieb technischer Elemente mbH Système de recouvrement de congélateur
US10178918B2 (en) 2013-03-12 2019-01-15 Hussmann Corporation Anti-fog heat control for a refrigerated merchandiser
CN111023669A (zh) * 2019-10-12 2020-04-17 海信（山东）冰箱有限公司 一种冷藏冷冻装置、除露控制方法及装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2238511A (en) * 1940-03-12 1941-04-15 Curtis H Thaxter Refrigerated cabinet
GB596842A (en) * 1945-12-10 1948-01-12 J & E Hall Ltd Improvements in or relating to means for preventing the condensation of moisture on surfaces of refrigerated chambers
US4127765A (en) * 1978-02-17 1978-11-28 Anthony's Manufacturing Company, Inc. Anti-condensation system for refrigerator doors
US4341089A (en) * 1978-02-10 1982-07-27 Tyler Refrigeration Corporation Self heating refrigerator
DE3208686A1 (de) * 1982-03-10 1983-09-22 Kueleg Kuehlmoebelfabrik Und A Kuehlschrank
DE3505759A1 (de) * 1984-02-23 1985-08-29 Koch Ag Kuehlgeraet, insbesondere kuehlschrank
US4548049A (en) * 1984-08-08 1985-10-22 Whirlpool Corporation Antisweat heater structure
DE19833958A1 (de) * 1998-07-10 2000-01-13 Austria Haustechnik Ag Rottenm Kühltruhe
US6178763B1 (en) * 1998-10-13 2001-01-30 Specialty Equipment Companies, Inc. Hinged pocket thermal breaker and refrigeration unit
WO2001016540A1 (fr) * 1999-08-28 2001-03-08 Norfrost Limited Congelateurs

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2238511A (en) * 1940-03-12 1941-04-15 Curtis H Thaxter Refrigerated cabinet
GB596842A (en) * 1945-12-10 1948-01-12 J & E Hall Ltd Improvements in or relating to means for preventing the condensation of moisture on surfaces of refrigerated chambers
US4341089A (en) * 1978-02-10 1982-07-27 Tyler Refrigeration Corporation Self heating refrigerator
US4127765A (en) * 1978-02-17 1978-11-28 Anthony's Manufacturing Company, Inc. Anti-condensation system for refrigerator doors
DE3208686A1 (de) * 1982-03-10 1983-09-22 Kueleg Kuehlmoebelfabrik Und A Kuehlschrank
DE3505759A1 (de) * 1984-02-23 1985-08-29 Koch Ag Kuehlgeraet, insbesondere kuehlschrank
US4548049A (en) * 1984-08-08 1985-10-22 Whirlpool Corporation Antisweat heater structure
DE19833958A1 (de) * 1998-07-10 2000-01-13 Austria Haustechnik Ag Rottenm Kühltruhe
US6178763B1 (en) * 1998-10-13 2001-01-30 Specialty Equipment Companies, Inc. Hinged pocket thermal breaker and refrigeration unit
WO2001016540A1 (fr) * 1999-08-28 2001-03-08 Norfrost Limited Congelateurs

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10357864A1 (de) * 2003-12-11 2005-07-21 Koenig & Bauer Ag Einrichtung zum Erfassen der Lage einer Kante eines bogenförmigen Verarbeitungsgutes
WO2009003636A1 (fr) * 2007-06-29 2009-01-08 Liebherr-Hausgeräte Lienz Gmbh Appareil de réfrigération et/ou de congélation
US10178918B2 (en) 2013-03-12 2019-01-15 Hussmann Corporation Anti-fog heat control for a refrigerated merchandiser
EP2808629A1 (fr) * 2013-05-29 2014-12-03 REMIS Gesellschaft für Entwicklung und Vertrieb technischer Elemente mbH Système de recouvrement de congélateur
CN111023669A (zh) * 2019-10-12 2020-04-17 海信（山东）冰箱有限公司 一种冷藏冷冻装置、除露控制方法及装置

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