EP0603653A1 - Meuble de vente réfrigéré et processus pour le fonctionnement d'un meuble de vente réfrigéré - Google Patents

Meuble de vente réfrigéré et processus pour le fonctionnement d'un meuble de vente réfrigéré Download PDF

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Publication number
EP0603653A1
EP0603653A1 EP93119802A EP93119802A EP0603653A1 EP 0603653 A1 EP0603653 A1 EP 0603653A1 EP 93119802 A EP93119802 A EP 93119802A EP 93119802 A EP93119802 A EP 93119802A EP 0603653 A1 EP0603653 A1 EP 0603653A1
Authority
EP
European Patent Office
Prior art keywords
air duct
evaporator
return air
longitudinal section
sales furniture
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Withdrawn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
EP93119802A
Other languages
German (de)
English (en)
Inventor
Gerd Dipl.-Ing. Böckmann
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Publication of EP0603653A1 publication Critical patent/EP0603653A1/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a refrigerated sales cabinet with a chest-shaped goods space, which has at least one longitudinal section, to which at least one cooling air circuit is assigned, the cooling air circuit having return air channels, an evaporator, a blower and at least one supply air channel, in the longitudinal section of which there is a central divider extends in the longitudinal direction essentially over the entire length of the longitudinal section, contains the supply air duct and has outlet openings for cooling air on both sides, which are connected to the supply air duct arranged within the center divider, and return air openings are provided on the long sides, which are connected to the return air ducts.
  • At least one cooling air circuit driven by a blower is used for cooling, in which air is cooled by indirect heat exchange with evaporating refrigerant or with a coolant.
  • the use of a coolant without a phase transition is included here, even if the heat exchanger is referred to as an evaporator as usual.
  • the evaporator can be realized by one or more heat exchangers.
  • the device for conveying the cooling air referred to here briefly as a blower, can be constructed in one or more stages.
  • the furniture need not necessarily be constructed symmetrically to the central plane of the transverse direction; the middle divider can also be arranged somewhat offset.
  • the goods space can be divided into several longitudinal sections along vertical planes running perpendicular to the center divider, the cooling air circuits of which are independent of one another. These vertical levels can, but do not have to be, real walls.
  • Chilled sales furniture of the type mentioned at the outset has so far been operated with two separate cooling air circuits per longitudinal section of the goods area.
  • at least one separate cooling air circuit with its own fan and evaporator is required.
  • this is relatively economical in terms of operating costs, it requires a lot of equipment.
  • a subsequent installation of a middle divider in an existing freezer or freezer is practically not possible.
  • the invention is therefore based on the object of developing a refrigerated display cabinet of the type mentioned at the outset which is economically more favorable, in particular due to lower production costs.
  • Both partial spaces of a longitudinal section of the goods space created by the center divider are thus supplied by a single cooling air circuit.
  • a second evaporator and a second fan are not necessary.
  • the existing cooling air circuit can essentially be maintained; it is only necessary to convert the openings previously operated as air outlet on one of the two long sides of the piece of furniture to return air openings, that is to say to connect them to the inlet of the evaporator via a first return air duct; in addition, it is necessary to direct the cold air downstream of the evaporator and fan into the supply air duct inside the center divider. It is not necessary to convert the evaporator or blower.
  • the arrangement of one of the two devices, evaporator or blower, below the goods area is particularly favorable for maintenance and cleaning work.
  • One or both of the two devices can be located entirely or partially at another location, for example the evaporator inside the center divider.
  • the accessibility for maintenance and cleaning work is further increased if both devices, evaporator and blower, are arranged below the goods area.
  • the return air openings on one long side are connected to a first return air duct which extends below the goods space essentially to the opposite long side and is combined to form a common cooling air duct with a second return air duct which is connected to the return air openings of this opposite long side.
  • the return air is guided from one long side past other internals located below the goods space over practically the entire transverse extent of the furniture.
  • the return air thus combined from both long sides of the furniture flows into the common cooling air duct.
  • the merging of the two return air streams is preferably supported by a baffle plate which is arranged at the point where the first and second return air ducts merge and which deflects the flow in the first return air duct approximately in the direction of the flow in the second return air duct.
  • blower and evaporator While the order of the blower and evaporator generally does not play an important role, it has proven to be particularly advantageous for the distribution of the volume below the goods space if the blower is arranged downstream of the evaporator. The entire return air can thus be fed directly to the inlet of the evaporator.
  • the blower is arranged in a blower duct below the goods space, which forms a section of the cooling air duct and whose inlet is connected to the evaporator and whose outlet is connected to the supply air duct.
  • the arrangement of the outlet of the fan duct above the evaporator is particularly favorable.
  • the blower duct is preferably arranged between two parallel sections of the first return air duct. Despite the fact that the blower is accommodated below the goods area, the return air can be sucked in evenly over the entire area of the section of the goods room. This also applies if the blower duct is at the full height of the volume that is available below the goods area for the cooling air circuit.
  • part of the first return air duct is arranged above the evaporator. In this way, the return air can be passed over the entire length of the section past the evaporator without any problems, namely between the goods floor and the cover plate of the evaporator.
  • one or more compensating openings can be provided in the middle divider, through which an air exchange and thus a temperature equalization can take place. This means that both subspaces can be stably controlled with a control loop.
  • the invention relates to a method for operating a cooled sales piece of furniture, which has a chest-shaped goods space with at least one longitudinal section, to which a cooling air circuit is assigned, the cooling air circuit having at least one evaporator and at least one blower and the longitudinal section having a central divider, which is essentially above
  • the entire length of the longitudinal section runs, with air being sucked in from the longitudinal section of the goods area on the long sides of the longitudinal section facing away from the center divider, in a common cooling air duct via a blower and an evaporator, downstream of the blower and evaporator through an inlet air duct arranged within the middle divider guided and then introduced into the longitudinal section of the goods area via outlet openings arranged on both sides of the center divider.
  • the exemplary embodiment of a refrigerated display case according to the invention shown in the drawings has a merchandise space 1 which is divided into two longitudinal sections 100, 200 by a vertical plane 2 running in the transverse direction and which are supplied with cooling air essentially independently of one another.
  • the division into longitudinal sections is merely a consequence of the design of the cooling air circuits;
  • the vertical level 2 could be formed by a real wall that divides the goods space in the longitudinal direction.
  • the two longitudinal sections 100, 200 are interrupted by a continuous center divider 3, which here runs in the longitudinal direction along the axis of symmetry.
  • the middle divider has outlet openings 4 for cooling air. It can additionally be provided with compensation openings 15, which allow a certain air exchange through the middle divider 3.
  • Air is drawn in on both long sides of the goods space 1 via return air openings 5 arranged on the long sides and fed to the cooling air circuit.
  • the return air sucked in on the left in FIG. 2 is led through a first return air duct 6 under the goods room 1 to the right side (arrows 7) and there, supported by a dust plate 14, is combined with the flow (arrows 8) of a second return air duct 9.
  • the return air continues to flow through a common cooling air duct in which the evaporator 10 and blower 11 are arranged.
  • the cooling air duct finally opens into the likewise common supply air duct 12, which is integrated in the middle divider 3.
  • the two blowers 11 each assigned to a section 100, 200 are each arranged in a blower duct 13 which only covers part of the longitudinal extent of the longitudinal section. This leaves space on the side to lead a part of the return air (first return air duct 6) past the blower 11.
  • the outlet of the fan duct 13 (transition to the supply air duct 12) is arranged above the evaporator 10.
  • the transverse extent of the evaporator is thereby not limited by the middle divider 3. However, it must not reach the bottom of the goods room 1 in order to allow the blower duct 13 and the first return air duct 6 to be guided past.
  • the evaporator 10 of a longitudinal section can be composed of one or more heat exchangers; deviating from this, it is possible to guide the evaporator tubes over several longitudinal sections, for example over the entire length of the piece of furniture.
  • the freezer or freezer according to the invention thus only requires one cooling air circuit per longitudinal section of the goods space.
  • the invention reduces the energy consumption of the freezer or freezer. At the same time, the evaporation temperature can be raised. Conversely, it is possible to enlarge the glass surfaces on the furniture body with the same or reduced cooling requirements.
  • the evaporator system is suitable for the use of brine as a coolant.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
EP93119802A 1992-12-23 1993-12-08 Meuble de vente réfrigéré et processus pour le fonctionnement d'un meuble de vente réfrigéré Withdrawn EP0603653A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4243975 1992-12-23
DE19924243975 DE4243975A1 (de) 1992-12-23 1992-12-23 Gekühltes Verkaufsmöbel und Verfahren zum Betreiben eines gekühlten Verkaufsmöbels

Publications (1)

Publication Number Publication Date
EP0603653A1 true EP0603653A1 (fr) 1994-06-29

Family

ID=6476467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93119802A Withdrawn EP0603653A1 (fr) 1992-12-23 1993-12-08 Meuble de vente réfrigéré et processus pour le fonctionnement d'un meuble de vente réfrigéré

Country Status (2)

Country Link
EP (1) EP0603653A1 (fr)
DE (1) DE4243975A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004032689A1 (fr) * 2002-10-04 2004-04-22 Carrier Commercial Refrigeration, Inc. Vitrine frigorifique a circulation d'air divisee pour des ventilations individuelles

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10103980A1 (de) * 2001-01-30 2002-08-01 Linde Ag (Tief)Kühlinsel
DE202008010806U1 (de) * 2008-08-05 2009-12-31 Kunststoff- Und Blechverarbeitung Burkhardt Gmbh Kühlregalsystem für eine beidseitig offene Warenpräsentation von Kühlgut
IT201700063123A1 (it) * 2017-06-08 2018-12-08 Arneg Gruppo espositore refrigerato e relativo sistema di distribuzione dei flussi di aria refrigerata.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1907680A (en) * 1929-11-11 1933-05-09 Wallich Ice Machine Company Display counter
GB904719A (en) * 1957-12-10 1962-08-29 William Richard Armour Happer Improvements in or relating to display apparatus for articles such as chilled or frozen foods and food products
DE3701974A1 (de) * 1987-01-23 1988-08-04 Linde Ag Kuehlinsel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1907680A (en) * 1929-11-11 1933-05-09 Wallich Ice Machine Company Display counter
GB904719A (en) * 1957-12-10 1962-08-29 William Richard Armour Happer Improvements in or relating to display apparatus for articles such as chilled or frozen foods and food products
DE3701974A1 (de) * 1987-01-23 1988-08-04 Linde Ag Kuehlinsel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004032689A1 (fr) * 2002-10-04 2004-04-22 Carrier Commercial Refrigeration, Inc. Vitrine frigorifique a circulation d'air divisee pour des ventilations individuelles

Also Published As

Publication number Publication date
DE4243975A1 (de) 1994-06-30

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