EP0628776A1 - (Low temperature) refrigerated cabinet - Google Patents

(Low temperature) refrigerated cabinet Download PDF

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Publication number
EP0628776A1
EP0628776A1 EP94108822A EP94108822A EP0628776A1 EP 0628776 A1 EP0628776 A1 EP 0628776A1 EP 94108822 A EP94108822 A EP 94108822A EP 94108822 A EP94108822 A EP 94108822A EP 0628776 A1 EP0628776 A1 EP 0628776A1
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EP
European Patent Office
Prior art keywords
deep
supply air
refrigerated cabinet
refrigerated
air ducts
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Withdrawn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
EP94108822A
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German (de)
French (fr)
Inventor
Gerd Böckmann
Fritz Mehlinger
Bernhard Möller
Rüdiger Windrich
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 EP0628776A1 publication Critical patent/EP0628776A1/en
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the invention relates to a (deep) refrigerated cabinet, which is open towards the front or can be closed with (glass) doors and optionally has goods display shelves and / or a chest-shaped, lower goods compartment.
  • the multi-curtain technology offers better thermal use of the air curtain compared to the use of only a single air curtain.
  • multi-veil technology Due to the necessary fans, the refrigerator is more expensive and also consumes more energy. Furthermore, due to the necessary suction and pressure space for the fans, there is an increased space requirement within the (deep) refrigerated cabinet. In the overall cost balance, multi-veil technology performs worse in the plus range, i.e. for (deep) refrigerated furniture that is operated between -2 and 15 ° C, and is therefore generally not used.
  • the aim and object of the present invention is to improve the disadvantages of the prior art.
  • both supply air ducts are supplied by means of a single fan.
  • the circulating cooling air in the rear or upper supply air duct is not or only partially cooled by the evaporator arranged in the front supply air duct.
  • the space requirement does not increase due to the necessary suction and pressure space of the fan of the (deep-freeze) refrigeration cabinet according to the invention compared to the space requirement of a fan of a concealed refrigeration cabinet.
  • Two alternative configurations of the (deep) refrigerated cabinet according to the invention are characterized in that the upper region of the (deep) refrigerated cabinet into a rear or upper supply air duct and a front or lower supply air duct or that the upper region of the (deep) refrigerated cabinet from the side of the (deep) refrigerated cabinet viewed in at least two supply air ducts one behind the other, which only merge into two superimposed supply air ducts just before the cooling air discharge zone.
  • a further embodiment of the (deep) refrigerated cabinet according to the invention is characterized in that at least one additional supply air duct is arranged between the at least two supply air ducts, in which the supply air is only partially cooled by the evaporator arranged in one of the other supply air ducts.
  • the inventive idea can be extended in the direction of several supply air ducts.
  • the cooling air guided in these individual supply air channels can then be cooled to different degrees by means of the evaporator.
  • the advantages of multi-veil technology with stepped blow-out temperatures can be used considerably more cost-effectively, more space-savingly and more economically, compared to the known prior art, which is primarily due to the improved efficiency of a large fan.
  • the figure shows a side view of the (deep) refrigerated cabinet 1 according to the invention in cross section.
  • the (deep) refrigerated cabinet 1 has goods display shelves 2.
  • a fan 4 is provided in the lower area 3 of the rear space of the (deep) refrigerated cabinet 1, which ventilates the fan into the (deep) refrigerated cabinet 1 via a common return air duct 5 returning cold air compresses.
  • the compressed air then enters either the supply air duct 6a or 6b.
  • the supply air ducts 6a and 7a or 6b and 7b are shown one behind the other or one above the other.

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

Abstract

(Low temperature) refrigerated cabinet (1) which is open towards the front or can be closed with (glass) doors and if appropriate has goods display shelves (2) and/or a chest-shaped lower goods space, a) a fan (4) being provided in the lower region (3) of the rear space of the (low temperature) refrigerated cabinet, which compresses the cold air flowing back via a common return-air duct (5) on the bottom of the (low temperature) refrigerated cabinet (1), b) the region of the rear space arranged above the region (3) described under a), and the top region of the (low temperature) refrigerated cabinet (1) being divided into at least two incoming-air ducts and c) an evaporator (8) being arranged in one of these incoming-air ducts. <IMAGE>

Description

Die Erfindung betrifft ein (Tief)kühlmöbel, welches nach vorne hin offen oder mit (Glas)türen verschließbar ist und gegebenenfalls Warenauslageböden und/oder einen truhenförmigen, unteren Warenraum aufweist.The invention relates to a (deep) refrigerated cabinet, which is open towards the front or can be closed with (glass) doors and optionally has goods display shelves and / or a chest-shaped, lower goods compartment.

(Tief)kühlmöbel mit Mehrschleier-Luftsystemen sind seit längerem bekannt, siehe z.B. das Modell NF6 bzw. NC6 der Firma Hussmann (Installation / Service Manual, Juni 1990).(Deep) refrigerated cabinets with multi-veil air systems have been known for a long time, see e.g. the model NF6 or NC6 from Hussmann (Installation / Service Manual, June 1990).

Die Mehrschleiertechnik bietet gegenüber der Verwendung nur eines einzelnen Luftschleiers eine bessere thermische Nutzung der Luftschleier. Mit der Mehrschleiertechnik sind jedoch auch Nachteile verbunden. Aufgrund der notwendigen Ventilatoren verteuert sich das Kühlmöbel und verbraucht zudem mehr Energie. Ferner besteht aufgrund des notwendigen Saug- und Druckraumes für die Ventilatoren ein erhöhter Platzbedarf innerhalb des (Tief)kühlmöbels. In der Gesamtkostenbilanz schneidet die Mehrschleiertechnik im Plusbereich, also bei (Tief)kühlmöbeln, die zwischen -2 und 15°C betrieben werden, schlechter ab und wird daher in der Regel nicht eingesetzt.The multi-curtain technology offers better thermal use of the air curtain compared to the use of only a single air curtain. However, there are also disadvantages associated with multi-veil technology. Due to the necessary fans, the refrigerator is more expensive and also consumes more energy. Furthermore, due to the necessary suction and pressure space for the fans, there is an increased space requirement within the (deep) refrigerated cabinet. In the overall cost balance, multi-veil technology performs worse in the plus range, i.e. for (deep) refrigerated furniture that is operated between -2 and 15 ° C, and is therefore generally not used.

Ziel und Aufgabe der vorliegenden Erfindung ist es, die Nachteile des Standes der Technik zu verbessern.The aim and object of the present invention is to improve the disadvantages of the prior art.

Dies wird erfindungsgemäß dadurch erreicht, daß

  • a) im unteren Bereich des Rückraumes des (Tief)kühlmöbels ein Ventilator vorgesehen ist, der die über einen gemeinsamen Rückluftkanal am Boden des (Tief)kühlmöbels zurückströmende Kaltluft verdichtet,
  • b) der oberhalb des unter a) beschriebenen Bereiches angeordnete Bereich des Rückraumes sowie der Deckenbereich des (Tief)kühlmöbels in mindestens zwei Zuluftkanäle unterteilt ist, und
  • c) in einem dieser Zuluftkanäle ein Verdampfer angeordnet ist.
This is achieved according to the invention in that
  • a) a fan is provided in the lower area of the rear space of the (deep) refrigerated cabinet, which compresses the cold air flowing back through a common return air duct at the bottom of the (deep) refrigerated cabinet,
  • b) the area of the rear area arranged above the area described under a) and the ceiling area of the (deep) refrigerated cabinet are divided into at least two supply air ducts, and
  • c) an evaporator is arranged in one of these supply air ducts.

Bei dem erfindungsgemäßen (Tief)kühlmöbel werden beide Zuluftkanäle mittels eines einzigen Ventilators versorgt. Die zirkulierende Kühlluft in dem rückwärtigen bzw. oberen Zuluftkanal wird durch den in dem vorderen Zuluftkanal angeordneten Verdampfer gar nicht oder nur teilweise gekühlt. Im Gegensatz zu dem aus dem Stand der Technik bekannten Tiefkühlmöbel erhöht sich der Platzbedarf aufgrund des notwendigen Saug- und Druckraumes des Ventilators des erfindungsgemäßen (Tief)kühlmöbels gegenüber dem Platzbedarf eines Ventilators eines Einschleier-Kühlmöbels nicht.In the (deep) refrigerated cabinet according to the invention, both supply air ducts are supplied by means of a single fan. The circulating cooling air in the rear or upper supply air duct is not or only partially cooled by the evaporator arranged in the front supply air duct. In contrast to the deep-freeze cabinet known from the prior art, the space requirement does not increase due to the necessary suction and pressure space of the fan of the (deep-freeze) refrigeration cabinet according to the invention compared to the space requirement of a fan of a concealed refrigeration cabinet.

Zwei zueinander alternative Ausgestaltungen des erfindungsgemäßen (Tief)kühlmöbels sind dadurch gekennzeichnet, daß der obere Bereich des (Tief)kühlmöbels in einen rückwärtigen bzw. oberen Zuluftkanal und einen vorderen bzw. unteren Zuluftkanal oder daß der obere Bereich des (Tief)kühlmöbels von der Seite des (Tief)kühlmöbels aus betrachtet in mindestens zwei hintereinanderliegende Zuluftkanäle, die erst kurz vor der Kühlluft-Ausblaszone in zwei übereinander liegende Zuluftkanäle übergehen, unterteilt ist.Two alternative configurations of the (deep) refrigerated cabinet according to the invention are characterized in that the upper region of the (deep) refrigerated cabinet into a rear or upper supply air duct and a front or lower supply air duct or that the upper region of the (deep) refrigerated cabinet from the side of the (deep) refrigerated cabinet viewed in at least two supply air ducts one behind the other, which only merge into two superimposed supply air ducts just before the cooling air discharge zone.

Für welche der beiden Ausgestaltungen man sich entscheidet, läßt sich durch fachmännische Überlegungen unter Berüchsichtigung der Parameter Gesamtluftmenge, Kühlluftschleiermenge, Möbelmaße, etc. bestimmen.Which of the two configurations you choose can be determined by professional considerations taking into account the parameters of total air volume, cooling air curtain volume, furniture dimensions, etc.

Selbstverständlich sind dem Fachmann keine Grenzen hinsichtlich möglicher Kombinationen von unterschiedlichsten Zuluftkanalführungen, ausgehend von den beiden genannten Ausgestaltungen, gesetzt.Of course, the person skilled in the art has no limits with regard to possible combinations of the most varied supply air duct routing, starting from the two configurations mentioned.

Eine weitere Ausgestaltung des erfindungsgemäßen (Tief)kühlmöbels ist dadurch gekennzeichnet, daß zwischen den mindestens zwei Zuluftkanäle mindestens ein weiterer Zuluftkanal angeordnet ist, in dem die Zuluft nur teilweise durch den in einem der anderen Zuluftkanäle angeordneten Verdampfer gekühlt wird.A further embodiment of the (deep) refrigerated cabinet according to the invention is characterized in that at least one additional supply air duct is arranged between the at least two supply air ducts, in which the supply air is only partially cooled by the evaporator arranged in one of the other supply air ducts.

Es ist für den Fachmann selbstverständlich, daß der Erfindungsgedanke in Richtung mehrerer Zuluftkanäle hin ausgeweitet werden kann. Die in diesen einzelnen Zuluftkanälen geführte Kühlluft kann dann unterschiedlich stark mittels des Verdampfers gekühlt werden. Mittels dieser Ausgestaltung lassen sich gegenüber dem bekannten Stand der Technik die Vorteile der Mehrschleiertechnik mit gestuften Ausblastemperaturen erheblich kostensparender, raumsparender und energetisch günstiger, was vor allem auf den verbesserten Wirkungsgrad eines großen Ventilators zurückzuführen ist, nutzen.It is self-evident for the person skilled in the art that the inventive idea can be extended in the direction of several supply air ducts. The cooling air guided in these individual supply air channels can then be cooled to different degrees by means of the evaporator. By means of this configuration, the advantages of multi-veil technology with stepped blow-out temperatures can be used considerably more cost-effectively, more space-savingly and more economically, compared to the known prior art, which is primarily due to the improved efficiency of a large fan.

Die Erfindung sowie weitere Ausgestaltungen davon werden anhand der Figur näher erläutert.The invention and further refinements thereof are explained in more detail with reference to the figure.

Die Figur zeigt eine Seitenansicht des erfindungsgemäßen (Tief)kühlmöbels 1 im Querschnitt. Das (Tief)kühlmöbel 1 weist Warenauslageböden 2 auf. Im unteren Bereich 3 des Rückraumes des (Tief)kühlmöbels 1 ist ein Ventilator 4 vorgesehen, der die über einen gemeinsamen Rückluftkanal 5 in das (Tief)kühlmöbel 1 zurückströmende Kaltluft verdichtet. Die verdichtete Luft gelangt anschließend entweder in den Zuluftkanal 6a oder 6b. In der Figur sind die Zuluftkanäle 6a und 7a bzw. 6b und 7b hinter- bzw. übereinander dargestellt. Sie könnten jedoch selbstverständlich auch, von der Seite des (Tief)kühlmöbels (1) aus betrachtet, hintereinanderliegen und erst kurz vor der Kühlluft-Ausblaszone in zwei übereinanderliegende Zuluftkanäle übergehen. Bei einem verhältnismäßig langem (Tief)kühlmöbel kommen unter Umständen mehrere Verdampfer zum Einsatz, sodaß sich Zuluftkanäle mit und ohne Verdampfer abwechseln. Die im Falle der Figur in den Zuluftkanal 6a gelangte Luft erfährt keine oder nur eine geringe Abkühlung und wird über den oberen Zuluftkanal 7a durch die Luftleitwabe 9 geführt und fallt entlang der Vorderkante des Kühlmöbels hinab. Die in den Zuluftkanal 6b gelangte Luft erfährt eine Abkühlung durch den Verdampfer 8 und gelangt anschließend über den Zuluftkanal 7b ebenfalls durch die Luftleitwabe 9 an die Vorderkante des (Tief)kühlmöbels 1.The figure shows a side view of the (deep) refrigerated cabinet 1 according to the invention in cross section. The (deep) refrigerated cabinet 1 has goods display shelves 2. A fan 4 is provided in the lower area 3 of the rear space of the (deep) refrigerated cabinet 1, which ventilates the fan into the (deep) refrigerated cabinet 1 via a common return air duct 5 returning cold air compresses. The compressed air then enters either the supply air duct 6a or 6b. In the figure, the supply air ducts 6a and 7a or 6b and 7b are shown one behind the other or one above the other. However, you could of course also, viewed from the side of the (deep) refrigerated cabinet (1), lie one behind the other and only shortly before the cooling air blow-out zone merge into two superposed supply air ducts. In the case of a relatively long (deep) refrigerator unit, several evaporators may be used, so that supply air ducts alternate with and without an evaporator. The air entering the supply air duct 6a in the case of the figure experiences no or only a slight cooling and is guided via the upper supply air duct 7a through the air guide honeycomb 9 and falls down along the front edge of the refrigerated cabinet. The air entering the supply air duct 6b is cooled by the evaporator 8 and then reaches the front edge of the (deep) refrigerated cabinet 1 via the supply air duct 7b, likewise through the air guide honeycomb 9.

Claims (4)

(Tief)kühlmöbel (1), welches nach vorne hin offen oder mit (Glas)türen verschließbar ist und gegebenenfalls Warenauslageböden (2) und/oder einen truhenförmigen, unteren Warenraum aufweist, dadurch gekennzeichnet, daß a) im unteren Bereich (3) des Rückraumes des (Tief)kühlmöbels ein Ventilator (4) vorgesehen ist, der die über einen gemeinsamen Rückluftkanal (5) am Boden des (Tief)kühlmöbels (1) zurückströmende Kaltluft verdichtet, b) der oberhalb des unter a) beschriebenen Bereiches (3) angeordnete Bereich des Rückraumes sowie der Deckenbereich des (Tief)kühlmöbels (1) in mindestens zwei Zuluftkanäle unterteilt ist, und c) in einem dieser Zuluftkanäle ein Verdampfer (8) angeordnet ist. (Deep) refrigerated furniture (1) which is open towards the front or can be closed with (glass) doors and optionally has goods display shelves (2) and / or a chest-shaped, lower goods space, characterized in that a) a fan (4) is provided in the lower area (3) of the rear space of the (deep) refrigerated cabinet, which compresses the cold air flowing back through a common return air duct (5) at the bottom of the (deep) refrigerated cabinet (1), b) the area of the rear space arranged above the area (3) described under a) and the ceiling area of the (deep) refrigerated cabinet (1) are divided into at least two supply air ducts, and c) an evaporator (8) is arranged in one of these supply air ducts. (Tief)kühlmöbel (1) nach Anspruch 1, dadurch gekennzeichnet, daß der obere Bereich des (Tief)kühlmöbels (1) in einen rückwärtigen bzw. oberen Zuluftkanal (6a bzw. 7a) und einen vorderen bzw. unteren Zuluftkanal (6b bzw. 7b) unterteilt ist.(Deep) refrigerated cabinet (1) according to claim 1, characterized in that the upper region of the (deep) refrigerated cabinet (1) into a rear or upper supply air duct (6a or 7a) and a front or lower supply air duct (6b or 7b) is divided. (Tief)kühlmöbel (1) nach Anspruch 1, dadurch gekennzeichnet, daß der obere Bereich des (Tief)kühlmöbels (1) von der Seite des (Tief)kühlmöbels (1) aus betrachtet in mindestens zwei hintereinanderliegende Zuluftkanäle, die erst kurz vor der Kühlluft-Ausblaszone in zwei übereinanderliegende Zuluftkanäle übergehen, unterteilt ist.(Deep) refrigerated cabinet (1) according to claim 1, characterized in that the upper region of the (deep) refrigerated cabinet (1) viewed from the side of the (deep) refrigerated cabinet (1) in at least two successive supply air ducts which are only shortly before the Cooling air discharge zone merge into two superposed supply air channels, is divided. (Tief)kühlmöbel (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zwischen den mindestens zwei Zuluftkanäle mindestens ein weiterer Zuluftkanal angeordnet ist, in dem die Zuluft nur teilweise durch den in einem der anderen Zuluftkanäle angeordneten Verdampfer (8) gekühlt wird.(Deep) refrigerated furniture (1) according to one of claims 1 to 3, characterized in that at least one additional supply air duct is arranged between the at least two supply air ducts, in which the supply air is only partially cooled by the evaporator (8) arranged in one of the other supply air ducts becomes.
EP94108822A 1993-06-09 1994-06-08 (Low temperature) refrigerated cabinet Withdrawn EP0628776A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4319237 1993-06-09
DE19934319237 DE4319237A1 (en) 1993-06-09 1993-06-09 (Deep) refrigerated cabinet

Publications (1)

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EP0628776A1 true EP0628776A1 (en) 1994-12-14

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EP94108822A Withdrawn EP0628776A1 (en) 1993-06-09 1994-06-08 (Low temperature) refrigerated cabinet

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DE (1) DE4319237A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040017969A (en) * 2002-08-23 2004-03-02 캐리어엘지 유한회사 Cooling air circulation structure for open type show-case
GB2418978A (en) * 2004-10-05 2006-04-12 Lg Electronics Inc Refrigerator
CN100462653C (en) * 2006-03-29 2009-02-18 三洋电机株式会社 Open showcase
WO2009059621A1 (en) * 2007-11-08 2009-05-14 Carrier Corporation Refrigerating sales furniture and method for operating the same
US7712852B2 (en) 2004-09-07 2010-05-11 Lg Electronics Inc. Double drawer of refrigerator
EP2612574A1 (en) * 2012-01-06 2013-07-10 Uab "Npi" Refrigeration unit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10048490A1 (en) * 2000-09-29 2002-04-11 Linde Ag Commercial furniture item with low-temperature cooling of stored goods, has common compressor for cooling of air required for cooling of stored goods
DE20021025U1 (en) * 2000-12-12 2002-04-18 Rewe Zentral Ag refrigerated
DE10140889A1 (en) * 2001-08-21 2003-03-06 Linde Ag Novel cooling rack

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2604461A1 (en) * 1975-02-07 1976-08-19 Kysor Industrial Corp EXHIBITION REFRIGERATOR WITH AIR CURTAIN
DE3029903A1 (en) * 1979-09-18 1981-04-02 Tyler Refrigeration Corp., Niles, Mich. OTHER-HALF-RIMED REFRIGERATED SHOWCASE
GB2167846A (en) * 1984-11-14 1986-06-04 Sanden Corp Refrigerated storage cabinet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2604461A1 (en) * 1975-02-07 1976-08-19 Kysor Industrial Corp EXHIBITION REFRIGERATOR WITH AIR CURTAIN
DE3029903A1 (en) * 1979-09-18 1981-04-02 Tyler Refrigeration Corp., Niles, Mich. OTHER-HALF-RIMED REFRIGERATED SHOWCASE
GB2167846A (en) * 1984-11-14 1986-06-04 Sanden Corp Refrigerated storage cabinet

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040017969A (en) * 2002-08-23 2004-03-02 캐리어엘지 유한회사 Cooling air circulation structure for open type show-case
US7712852B2 (en) 2004-09-07 2010-05-11 Lg Electronics Inc. Double drawer of refrigerator
GB2418978A (en) * 2004-10-05 2006-04-12 Lg Electronics Inc Refrigerator
CN100462653C (en) * 2006-03-29 2009-02-18 三洋电机株式会社 Open showcase
WO2009059621A1 (en) * 2007-11-08 2009-05-14 Carrier Corporation Refrigerating sales furniture and method for operating the same
EP2612574A1 (en) * 2012-01-06 2013-07-10 Uab "Npi" Refrigeration unit

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