EP0571331A1 - Meuble pour refroidissement - Google Patents

Meuble pour refroidissement Download PDF

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Publication number
EP0571331A1
EP0571331A1 EP93810360A EP93810360A EP0571331A1 EP 0571331 A1 EP0571331 A1 EP 0571331A1 EP 93810360 A EP93810360 A EP 93810360A EP 93810360 A EP93810360 A EP 93810360A EP 0571331 A1 EP0571331 A1 EP 0571331A1
Authority
EP
European Patent Office
Prior art keywords
air
display surface
cooling element
display
cabinet 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.)
Granted
Application number
EP93810360A
Other languages
German (de)
English (en)
Other versions
EP0571331B1 (fr
Inventor
Eberhard Buob
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.)
Buob Kuehlmobel
Original Assignee
Buob Kuehlmobel
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 Buob Kuehlmobel filed Critical Buob Kuehlmobel
Publication of EP0571331A1 publication Critical patent/EP0571331A1/fr
Application granted granted Critical
Publication of EP0571331B1 publication Critical patent/EP0571331B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47F3/0482—Details common to both closed and open types
    • A47F3/0495—Spraying, trickling or humidifying means
    • 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
    • A47F3/0465—Cases or cabinets of the open type with natural air circulation

Definitions

  • the invention relates to a refrigerator for the display of food in shops according to the preamble of claim 1.
  • an air access slot is provided above the cooling element, into which warm room air can enter, pass the cooling element and, cooled there, exit through the slot at the height of the display surface and can slowly distribute itself over the display surface.
  • a refrigerated display case in which evaporators are arranged under the working body, which cool the heated air that is sucked in directly under the working surface.
  • the cooled air flows from the evaporators in a tapered channel under the display surface to the opposite side of the display and leaves the room to flow back over the display surface to the inlet opening above the evaporators.
  • the invention seeks to remedy this.
  • the invention as defined in the characterizing features of claim 1, solves the problem of creating a piece of refrigerated furniture which enables the cold air to be circulated and distributed regularly over the entire display.
  • the v-shaped design of the bottom of the channel under the display surface through which the air flows from the evaporator before it emerges on the opposite side into the display surface, creates a perfect circulation above the display and at a distance from the display surface , so that a cold air lake is created under the circulating cold air.
  • the air flow of the cold air can be obtained without the use of a fan. Due to the gradual heating of the air in the second section of the room under the display surface, it rises, exits through the air outlet slot and pulls the air flowing under the floor with it.
  • the resulting closed circulation of the air flow under the delivery surface and over the goods to be cooled on the one hand achieves an excellent cooling temperature, which is constant above all over the delivery area, and on the other hand the cold air that inevitably heats up when it overflows the delivery surface completely bypass the cooling element.
  • An overflow of cold air over the work surface and thereby a loss of cooled air, which must be replaced by warm air, is completely eliminated.
  • This essentially complete circulation results in a Energy savings with optimal cooling of the entire display area of 30-40%. If the cold air flow over the display surface is disturbed when food stored there is removed, the essentially laminar flow is rebuilt within a few seconds; A build-up of cold air above the level of the work surface can be completely prevented.
  • reference numeral 1 shows a refrigerator, as it is used above all in butchers, cheese shops and grocery stores.
  • a cover 5 made of glass or plexiglass is arranged on the buyer side above a flat or step-shaped display surface 7 and protects the goods 9 to be cooled from contamination.
  • the refrigerated cabinet 1 has a work surface 11, under which a cooling element 13, for example an evaporator or coolant-carrying lines 14 with corresponding fins for releasing the cold to the air flowing past the cooling element 13.
  • the cooling element 13 is not explained in detail, since it is constructed in a known manner, but preferably with large-area evaporator elements, in order to allow air to circulate without fans.
  • the display surface 7 preferably consists of a stainless steel trough 15.
  • a space 23 is formed under this trough 15 by two surface sections 17 and 19 arranged at an angle of 2 ° to 10 ° to the horizontal.
  • a channel 25 can be formed, to which a condensate drain line 27 is connected.
  • the space 23 is connected through an air outlet slot 29 to a cooling space 31, which contains the cooling element 13.
  • the space 23 is connected to the display surface 7 by an air outflow slot 33, which is located at the top in the space 23, and opens out via the display surface 7.
  • the cooling space 31 has an air inlet slot 37 along its upper cover 35, which connects the space above the display surface to the cooling space 31.
  • the air inlet slot 37 is higher than the air outlet slot 33 on the opposite side of the display surface 7. All the cooled air leaves the cooling space 31 in the region below the display surface 7 through the air outlet slot 29.
  • a moisture dispenser 39 (ultrasonic atomizer) can be arranged in the room 23, with which the cooled air can be enriched with water mist in order to further increase the humidity of the circulating cold air.
  • a high level of moisture can already be found due to the system can be achieved through the closed, low-loss cycle.
  • the cross section of the air inlet slot 37 to the cooling space 31 is preferably smaller than the cross section of the air outlet slot 33 on the opposite side of the display surface.
  • the ratio of the cross-sectional areas can be approximately 5 to 6 to 4 to 5.
  • the cover 5 On the side, the cover 5 is closed off by a wall 41 in order to prevent air circulation within the refrigerator.
  • the display surface 7 is open to the operating personnel from the side of the work surface 11.
  • the cold air - already warmed somewhat by contact with the display surface 7 - flows through the air outlet slot 33, which is higher than the air outlet slot 29, onto the display surface 7 and flows continuously, at a distance above it stored goods 9 to the air inlet slot 37 above the cooling element 13.
  • a continuous flow flows automatically Flow of cold air from the cooling element 13 under the display surface 7 through the space 23 and back from there via the refrigerated goods 9 to the cooling element 13.
  • the suction effect at the air inlet slot 37 is so strong that essentially all of the cold circulation air is sucked in and cooled again.
  • Turbulence caused by the removal of refrigerated goods 9 from the display surface 7 is immediately smoothed out by the flowing air extending over the entire length of the refrigerated cabinet 1 and prevents it from rising into the area above the air inlet slot 37.
  • the arrangement of the air outflow slot 33 over a few centimeters The delivery surface 7 has the effect that the cold air flow is not substantially disturbed by the refrigerated goods 9 and this comes to lie completely or almost completely below the cold air flow zone.
  • the refrigerated goods 9 are consequently located between the bottom 9 of the display surface 7, which is cooled by the air flow flowing from below through the space 23, and the compact cooling air ceiling flowing over the display surface 7 in a cold air lake, the cooling air ceiling behaving similarly to a high fog ceiling over a valley. The moisture under the cooling air ceiling in the food area remains relatively high.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Liquid Crystal Substances (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
EP93810360A 1992-05-18 1993-05-14 Meuble pour refroidissement Expired - Lifetime EP0571331B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH160692 1992-05-18
CH1606/92 1992-05-18

Publications (2)

Publication Number Publication Date
EP0571331A1 true EP0571331A1 (fr) 1993-11-24
EP0571331B1 EP0571331B1 (fr) 1997-01-02

Family

ID=4214358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93810360A Expired - Lifetime EP0571331B1 (fr) 1992-05-18 1993-05-14 Meuble pour refroidissement

Country Status (3)

Country Link
EP (1) EP0571331B1 (fr)
AT (1) ATE146949T1 (fr)
DE (1) DE59304940D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0958766A1 (fr) 1998-05-23 1999-11-24 Wälchli, Hans, Dr. Comptoir frigorifique
FR2821730A1 (fr) 2001-03-08 2002-09-13 Fun Air Vitrine refrigeree pour la presentaiton de produits alimentaires
WO2010064270A2 (fr) 2008-12-02 2010-06-10 Mondial Group S.R.L Dispositif d'exposition réfrigéré amélioré pour crèmes glacées préparées

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB596075A (en) * 1945-07-17 1947-12-29 Hussmann Ligonier Company Open refrigerated display case
BE752575R (fr) * 1969-06-27 1970-12-28 Turner Brothers Asbest Perfectionnement aux popylene renforces par des fibres d'amiante
DE3203903A1 (de) * 1981-02-27 1982-10-28 C. Hoegger & Cie. AG, 9202 Gossau Verfahren zur kuehlung einer kuehlvitrine fuer lebensmittel und kuehlvitrine zur durchfuehrung des verfahrens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB596075A (en) * 1945-07-17 1947-12-29 Hussmann Ligonier Company Open refrigerated display case
BE752575R (fr) * 1969-06-27 1970-12-28 Turner Brothers Asbest Perfectionnement aux popylene renforces par des fibres d'amiante
DE3203903A1 (de) * 1981-02-27 1982-10-28 C. Hoegger & Cie. AG, 9202 Gossau Verfahren zur kuehlung einer kuehlvitrine fuer lebensmittel und kuehlvitrine zur durchfuehrung des verfahrens

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0958766A1 (fr) 1998-05-23 1999-11-24 Wälchli, Hans, Dr. Comptoir frigorifique
FR2821730A1 (fr) 2001-03-08 2002-09-13 Fun Air Vitrine refrigeree pour la presentaiton de produits alimentaires
WO2010064270A2 (fr) 2008-12-02 2010-06-10 Mondial Group S.R.L Dispositif d'exposition réfrigéré amélioré pour crèmes glacées préparées

Also Published As

Publication number Publication date
ATE146949T1 (de) 1997-01-15
EP0571331B1 (fr) 1997-01-02
DE59304940D1 (de) 1997-02-13

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