EP1853139B1 - Bac de presentation refrigere - Google Patents

Bac de presentation refrigere Download PDF

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Publication number
EP1853139B1
EP1853139B1 EP05728735.1A EP05728735A EP1853139B1 EP 1853139 B1 EP1853139 B1 EP 1853139B1 EP 05728735 A EP05728735 A EP 05728735A EP 1853139 B1 EP1853139 B1 EP 1853139B1
Authority
EP
European Patent Office
Prior art keywords
chest
refrigerated
display
air
venting
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.)
Not-in-force
Application number
EP05728735.1A
Other languages
German (de)
English (en)
Other versions
EP1853139A1 (fr
Inventor
Thomas Krieger
Bernhard Möller
Dimitri Keller
Markus Schuster
Ines Spettmann
Stefan Strupp
Stefan Ullrich
Olivier Merker
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.)
Carrier Corp
Original Assignee
Carrier Corp
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 Carrier Corp filed Critical Carrier Corp
Publication of EP1853139A1 publication Critical patent/EP1853139A1/fr
Application granted granted Critical
Publication of EP1853139B1 publication Critical patent/EP1853139B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47F3/0447—Cases or cabinets of the open type with forced air circulation with air curtains
    • 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
    • F25D2323/00—General constructional features not provided for in other groups of this subclass
    • F25D2323/002—Details for cooling refrigerating machinery
    • F25D2323/0028—Details for cooling refrigerating machinery characterised by the fans
    • F25D2323/00283—Details for cooling refrigerating machinery characterised by the fans the fans allowing rotation in reverse direction

Definitions

  • the present invention relates to a refrigerated display chest comprising a display platform supporting the goods to be refrigerated and displayed, a cooler and means for venting an air flow.
  • the cooler may be an evaporator.
  • Refrigerated display chests comprise means for cooling air and means for venting an air flow.
  • the cooled air flow is directed into the display area where the goods to be refrigerated are supported by a display platform.
  • the space above the display platform supporting the goods to be refrigerated is called the display area.
  • Two operational principles are known for directing the flow of the cooling air. According to the first principle, an inlet for cooled air into the display area is provided at one side of the refrigerated display chest and an outlet is provided at the opposite side. According to the second principle, an inlet for cooled air into the display area is provided in the middle of the refrigerated display chest and outlets are provided at two sides located opposite to each other. Both principles have in common that the flow direction of the cooled air remains the same for the whole operation time of the refrigerated display case, i. e. as long as goods are refrigerated.
  • the present invention is provoked by the cognition that the temperature distribution in such a refrigerated display chest is to a certain extent inhomogeneous, because of the cooling air is becoming warmer on its way from the inlet to the outlet.
  • the average difference in the temperature of goods between the coldest area at the air inlet side and the warmest area at the air outlet side in the display area is about 6 °K.
  • US 4 723 414 A there is disclosed a low-temperature showcase wherein evaporators are installed in the vent ports located at both sides of a storage chamber, respectively associated therewith, and a blast fan which can rotate reversibly is installed in the air passage, and thereby the two evaporators are put in cooling operation alternatively.
  • a cooling operation by one of the evaporators is performed alternately every time by a timer, that is, every two hours. Then, for example, when one evaporator is put in cooling operation, the other evaporator is defrosted by a corresponding electric heater.
  • EP 0 862 878 A1 discloses a refrigerator display cabinet for furnishing refrigerated goods has a vertical duct, which is surrounded by a magazine which is filled with the goods from above, and at its lower part is surrounded by a bottom, on which the goods rest and which at its periphery has an opening for taking the goods out.
  • a fan is arranged to bring air which is refrigerated by a cooling element to flow upwards through the duct and then between goods located in the upper part of the magazine, from where the air flows downwards between goods located in the lower part of the magazine and out through holes in the bottom and then back to the fan.
  • Means are arranged to reverse the circulation direction of the air from time to time so that the air periodically will flow in opposite direction through the display cabinet.
  • the invention provides a refrigerated display chest according to claim 1.
  • At least one of the means for cooling and the means for venting an air flow are located underneath the display platform. This is especially useful to create a balanced flow of the cooled air along the sides of the refrigerated display case.
  • the whole length and width of the refrigerated display chest can be used as display area without any cooling means obstructing.
  • the means for venting comprise at least two fans being operated alternately, with the blowing direction of one of the fans being opposite to the blowing direction of the other one of the fans.
  • the cooling means or cooler comprises at least two cooling elements.
  • evaporators are used as cooling elements, e.g. evaporators, which may have fins the air to be cooled flows through.
  • cooling elements In accordance with an embodiment of the present invention there are provided two cooling elements, one cooling element is arranged on one side and the other cooling element is arranged on the other side of the means for venting.
  • This arrangement is especially useful to make sure there is no snow build up at the outlet of the cooling air, where the cooling air leaves the display area.
  • devices like air baffles or air flow distributors are used at the blowing side of the fan to improve the distribution of the cooled air.
  • the same devices are not useful at the suction side of the fan where the cooling air is sucked in again after having cooled the displayed goods, because of the possibility of the aforementioned build up of snow which could occur due to the cooling air being almost saturated with moisture at this point.
  • both sides have to be able to function as blowing side and as suction side.
  • a cooling element is provided at each side of the means for venting.
  • Each cooling element for example comprises an evaporator with fins suitable to be located at either side. The fins improve the distribution of the cooled air at the blowing side, but do not cause any build up of snow at the suction side.
  • Fig. 1 shows an embodiment of a refrigerated display chest 1 not according to the invention, comprising a display platform 2 supporting the goods to be refrigerated, cooling means (3a, 3b) and means for venting (4) an air flow which is a fan 4 in the embodiment shown in the Figure.
  • the cooling means are embodied as two cooling elements 3a, 3b each being located at a different side of the fan 4.
  • the means for venting (4) are designed to be able to change the air flow direction during operation of the refrigerated display chest 1.
  • the fan 4 changes its direction of rotation every few minutes, for example. This means that the blowing side and the suction side alternate. With the air flow direction alternating every few minutes a quite homogeneous temperature distribution over the display area is achieved.
  • Fig. 1 one air flow direction is indicated by black arrows, the other air flow direction is indicated by white arrows.
  • Fig. 2 shows the refrigerated display chest of the invention having venting means in the form of two fans 4b each arranged in a different air flow channel 10a and 10b, respectively.
  • each of the fans 4a and 4b is associated one cooler 3a and 3b, respectively, arranged in the same channel as the associated fan 4a and 4b, respectively.
  • the fans 4a and 4b are operated alternately so that only one of the fans 4a and 4b is operated at a time.
  • the fans 4a and 4b have different blowing directions so that there result alternating air flows through channel 10a and channel 10b resulting in alternating air flow direction above the display platform 2.
  • Fig. 3 shows a second embodiment of a refrigerated display chest not according to the invention having a single cooler 3 and at least one fan 4.
  • the fan or fans 4 is/are operated with alternating blowing direction.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Freezers Or Refrigerated Showcases (AREA)

Claims (6)

  1. Vitrine réfrigérée (1) conçue pour fournir une distribution de température plus homogène dans la vitrine comprenant une plateforme d'exposition (2) soutenant les marchandises qui doivent être réfrigérées, un refroidisseur (3a, 3b) et des moyens de ventilation (4) d'un flux d'air, dans lequel les moyens de ventilation (4) modifient la direction de flux du flux d'air refroidi au cours du fonctionnement de la vitrine réfrigérée (1), dans lequel les moyens de ventilation (4) comprennent au moins deux ventilateurs fonctionnant de façon alternée, les ventilateurs ayant des directions de ventilation opposée.
  2. Vitrine réfrigérée (1) selon la revendication 1, dans laquelle le refroidisseur (3a, 3b) est situé en dessous de la plateforme d'exposition (2).
  3. Vitrine réfrigérée (1) selon la revendication 1 ou 2, dans laquelle les moyens de ventilation (4) d'un flux d'air sont situés en dessous de la plateforme d'exposition (2).
  4. Vitrine réfrigérée (1) selon les revendications 1 à 3, dans laquelle le refroidisseur (3a, 3b) comprend au moins deux éléments de refroidissement (3a, 3b).
  5. Vitrine réfrigérée (1) selon la revendication 4, ayant deux éléments de refroidissement (3a, 3b) dans laquelle sur chaque côté des moyens de ventilation (4), un des éléments de ventilation (3a, 3b) est placé.
  6. Vitrine réfrigérée (1) selon l'une quelconque des revendications 1 à 3, dans laquelle le refroidisseur (3a, 3b) comprend un élément de refroidissement (3).
EP05728735.1A 2005-02-18 2005-02-18 Bac de presentation refrigere Not-in-force EP1853139B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2005/001725 WO2006087009A1 (fr) 2005-02-18 2005-02-18 Bac de presentation refrigere

Publications (2)

Publication Number Publication Date
EP1853139A1 EP1853139A1 (fr) 2007-11-14
EP1853139B1 true EP1853139B1 (fr) 2017-04-05

Family

ID=34982352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05728735.1A Not-in-force EP1853139B1 (fr) 2005-02-18 2005-02-18 Bac de presentation refrigere

Country Status (2)

Country Link
EP (1) EP1853139B1 (fr)
WO (1) WO2006087009A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5957762B2 (ja) * 2012-03-30 2016-07-27 パナソニックＩｐマネジメント株式会社 オープンショーケース
US9861213B2 (en) * 2014-11-13 2018-01-09 The Vollrath Company, L.L.C. Forced cold air well with false bottom insert
DE102019128365A1 (de) * 2019-10-21 2021-04-22 Kramer Gmbh Verkaufstheke und Verfahren zum Betreiben einer Verkaufstheke

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0862878A1 (fr) * 1997-03-07 1998-09-09 AKTIEBOLAGET ELECTROLUX (publ.) Distributeur refrigerant

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473294A1 (fr) * 1979-02-14 1981-07-17 Tyler Refrigeration Corp Bloc d'etalage refrigere et son procede de mise en oeuvre
US4723414A (en) 1984-10-31 1988-02-09 Sanyo Electric Co. Ltd. Low-temperature showcase
DE19810232A1 (de) * 1997-07-02 1999-01-07 Winfried H Eming Verfahren zur Vornahme von Verdampferabtauungen bei Kühlmöbeln und Kühlmöbel zur Durchführung des Verfahrens

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0862878A1 (fr) * 1997-03-07 1998-09-09 AKTIEBOLAGET ELECTROLUX (publ.) Distributeur refrigerant

Also Published As

Publication number Publication date
EP1853139A1 (fr) 2007-11-14
WO2006087009A1 (fr) 2006-08-24

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