EP0234551B1 - Refrigerated counter unit - Google Patents

Refrigerated counter unit Download PDF

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Publication number
EP0234551B1
EP0234551B1 EP87102570A EP87102570A EP0234551B1 EP 0234551 B1 EP0234551 B1 EP 0234551B1 EP 87102570 A EP87102570 A EP 87102570A EP 87102570 A EP87102570 A EP 87102570A EP 0234551 B1 EP0234551 B1 EP 0234551B1
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EP
European Patent Office
Prior art keywords
counter
housing
cold
bed
cold source
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.)
Expired - Lifetime
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EP87102570A
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German (de)
French (fr)
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EP0234551A2 (en
EP0234551A3 (en
Inventor
Heinz Dr. Nax
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.)
NAX GMBH & CO. LADENBAU OHG TE FRANKFORT A.D. MAIN
Original Assignee
Nax GmbH and Co Ladenbau oHG
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Publication date
Application filed by Nax GmbH and Co Ladenbau oHG filed Critical Nax GmbH and Co Ladenbau oHG
Priority to AT87102570T priority Critical patent/ATE75119T1/en
Publication of EP0234551A2 publication Critical patent/EP0234551A2/en
Publication of EP0234551A3 publication Critical patent/EP0234551A3/en
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Publication of EP0234551B1 publication Critical patent/EP0234551B1/en
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    • 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

Definitions

  • the invention relates to a refrigerated display unit, with a counter bed accommodating the goods storage space, in which a circulating air flow conveyed by a blower after cooling by a cooling source, for example an evaporator, and possibly humidification by a humidification device in the goods storage space and back to the cold source and possibly the humidification device is conveyed, the cold source and possibly the humidification device being arranged in a housing below the counter bed, preferably in a separate sub-housing of the counter bed, the housing has only a fraction of the length of the counter bed and the cooled and possibly humidified supply air flow from the interior of the housing via at least one passage opening in the bottom of the counter bed starting from this by means of at least one supply air duct running in the longitudinal direction of the counter over a substantial part of its length in the longitudinal direction of the counter to the G e longitudinally assigned counter section of the goods storage space is supplied, and wherein the return air flow from the goods storage space is returned via a return air duct which is common to all counter sections and runs
  • Such a refrigerated display unit is known from DE-OS 32 30 792. This has proven itself in practice.
  • the object of the present invention is to improve the known refrigerated display principle with regard to lower production costs and more effective cooling.
  • the fan is arranged in the passage opening of the bottom of the counter bed and promotes the supply air flow into a distribution chamber located above, from which at least one supply air duct branches off, that the return air flow in the housing is substantially perpendicular from top down through a cold source and the supply air stream leaving the cold source - after reversal - is guided essentially vertically from bottom to top to the fan in the bottom of the counter bed.
  • this novel type of circulating air flow in the housing for cooling and possibly moisture absorption both requires less production of the refrigerated display unit and also achieves better cooling performance.
  • the special type of air circulation in the housing opens up the possibility of making it particularly compact in the depth of the counter, while the housing no longer has to be in the longitudinal direction of the counter, than at the previously known counter.
  • the relatively short flow paths and the type of arrangement of the units for generating the circulating air flow, cooling the circulating air flow and possibly humidifying the circulating air flow also ensure an energetically favorable mode of operation. For this it is only accepted that the blower is no longer located in the housing as in the previously known counter, and in particular is also not accessible from the front of the housing by removing a flap.
  • the new solution of separating the blower and cold source and rearranging the blower behind the cold source outside the housing in the bottom of the counter bed means that the distribution of the circulating air flow over the cross section of the cold source, for example designed as an evaporator, is significantly better and can be designed independently of the blower and usual and thus inexpensive blowers can be used for the promotion of the circulating air flow.
  • the housing underneath the counter bed still serves as a chamber for conditioning the circulating air for temperature and possibly humidity, but the fan is relocated from the interior of the housing to improve the functionality of the refrigerated display unit.
  • a particularly favorable routing of the circulating air flow in the housing and the cooling source is obtained if an intermediate space is left between the cooling source and the housing base for the reversal of the supply air flow from vertically downwards to vertically upwards.
  • a vestibule for the distribution of the return air flow over the entire cross-sectional area of the cold source is left open, although the passage opening in the bottom of the counter bed for the Return air flow is relatively small.
  • additional baffles can be provided.
  • the humidification device which is designed, for example, as a sterile steam generator, is arranged outside the housing, for example on or in the rear of the counter bed, and the moisture is above the inside of the substantially vertical ascending supply air flow nozzle tube is supplied to the interior of the housing. This also ensures that the control of the humidification device can be well monitored and controlled by the sales staff, while a favorable moisture distribution takes place in the interior of the most compact housing possible.
  • the cold source for example in the form of an evaporator
  • the return air flow is inevitably guided through the cold source and rises on the seller side in the direction of the passage opening in the bottom of the counter bed and can accordingly be done on the seller side by simple flow guidance be placed in the goods storage room.
  • the passage opening for the return air flow in the floor of the counter bed is preferably (just now) on the seller side above the cold source. In this way it is achieved that the return air flow below the goods support plate in the goods storage space is returned against the direction of the circulating air flow in the goods storage space over as long a distance as possible and the goods support floor is thus cooled as well as possible from below.
  • the height of the cold source expediently makes up about 1/2 to 2/3 of the clear height of the interior of the housing. This results in favorable flow conditions in the anteroom in front of the cold source and in the space under the cold source with the required power of the cold source.
  • the depth that is to say the dimension prevailing in the direction of the buyer-seller side, should make up about 1/2 to 2/3 of the clear depth of the interior of the housing. This ensures that, with the required power of the cooling source, there is sufficient free space for the vertical inflow of the supply air flow, in which the supply air flow can then also be humidified if necessary.
  • the at least one supply air duct tapers in cross-section, starting from the distribution chamber and towards the longitudinal longitudinal section supplied by it.
  • At least one supply air duct expediently branches off from the distribution chamber on both sides in the longitudinal direction of the counter. In this way, the lengths over which the cooled or possibly humidified supply air must be transported can be kept short.
  • the refrigerated display unit 1 has a goods storage space 2 which is received by a counter bed 3.
  • the goods storage space 2 is covered by a counter top 23 at least on the buyer side and can be delimited on both sides by side walls 31 corresponding approximately to the counter contour.
  • a work surface 16 for the sales personnel above the rear of the counter adjoins the goods storage space 2 and is formed by individual box-shaped elements 32.
  • In the goods storage space 2 there is a removable goods shelf 21, with an extraction slot 22 which is effective essentially over the entire length of the counter being kept free.
  • a housing 7 is arranged below the counter bed 3, which only makes up a fraction of the length of the counter bed 3.
  • the interior 8 of the housing 7 is accessible via an assembly opening 12 which can be closed by a flap 12 '.
  • the housing 7 is in flow connection via two openings 24 (for the supply air flow K) and 24 '(for the return air flow R) that are separated from one another in terms of flow technology.
  • the through openings 24, 24 'thus have at most the length of the housing 7 in the longitudinal direction of the counter.
  • the circulating air flow is conveyed by a blower 5 after it has been cooled and possibly humidified in a cold source 4, for example an evaporator, accommodated in the housing 7.
  • the humidification takes place via a humidification device 6, which is arranged in one of the box elements 32 of the counter front and is designed as a sterile steam generator.
  • the sterile steam is emitted into the interior 8 from a nozzle pipe 6 '.
  • the cooled and possibly humidified supply air K is discharged via the fan 5 arranged in the bottom 18 of the counter bed 3 into a distribution chamber 11 located above it.
  • the fan 5 is accessible from the counter bed 3 and does not interfere with the accessibility of the cold source 4 in the housing 7.
  • supply air ducts 9 branch off from the distribution chamber 11, which extend over a substantial part of their length in the longitudinal direction of the counter to the relevant longitudinal section of the counter, at which the cooled and optionally humidified supply air K is discharged into the goods storage space 2 shall be.
  • the supply air ducts 9 open into vertically upwardly extending ducts 33, which open into the goods storage space 2 directly below the worktop 16 via an outlet opening 10 which may be provided with lamella plates 17.
  • the vertical channels 33 are delimited on their rear side by the thermally insulated counter bed rear wall 30.
  • the cold and possibly humidified supply air K falls slightly from the seller side V to the buyer side E of the refrigerated display unit 1 and leaves the goods storage space 2 via the front extraction slot 22.
  • the return air R is below the goods receiving floor 21 the entire length of the refrigerated display unit 1 is returned in the direction of the seller's side V, to an inlet slot 19 which extends over the entire length of the counter and which opens into a return air duct 20 which also extends over the entire length of the counter.
  • the return air duct 20 is in flow connection with the interior 8 of the housing 7 via the passage opening 24 ', which is no longer than the interior 8 of the housing 7.
  • the return air flow R passes from the passage opening 24 'into an anteroom 26 which is provided above the cold source 4 arranged on the side wall 28 of the housing 7 on the buyer side.
  • Distribution plates 27 can extend from the passage opening 24 'to the cold source 4 in order to apply the effective cross section of the cross section as evenly as possible To reach cold source 4 with the return air flow R.
  • the return air flow flows essentially vertically from top to bottom over its entire height.
  • an intermediate space 25 is left free, in which the already cooled circulating air flow undergoes a reversal of direction and in the seller-side part of the interior 8 of the housing 7 is arranged essentially perpendicularly from bottom to top to that arranged in the bottom 18 of the counter bed 3 Fan 5 flows.
  • the supply air flow K is supplied with moisture in the form of steam via the nozzle pipe 6 '.
  • the nozzle tube 6 ' can be provided with a baffle 13 to promote the exit of the steam from the nozzle tube 6'.
  • the circulation of the circulating air flow starts again from the distribution chamber 11.
  • the configuration of the supply air ducts 9, the distribution chamber 11, the department of the supply air ducts 9 and the distribution chamber 11 of the return air duct 20 and the prechamber 25 as well as part of the bottom 18 of the counter bed 3 can be made from sheets 14, 14 ', 14'',14''' which, if necessary, can be formed as a unit with the inner delimitation of the channels 33 to simplify assembly.
  • the housing 7 is arranged as a separate sub-housing only below approximately half the depth of the counter bed 3 on the seller side.
  • the passage opening 24 'for the return air flow R lies in the bottom 18 of the counter bed 3 as far as possible on the seller side just above the cold source 4. In this way, the best possible cooling of the goods support base 21 can be achieved with a favorable flow distribution in the cold source 4.
  • the height of the cold source 4 makes between about 1/2 to 2/3 of the clear height of the interior 8 of the housing 7.
  • the depth of the cold source 4 makes up about 1/2 to 2/3 of the clear depth of the interior of the housing 7.
  • the supply air channels 9 can be tapered in cross-section from the distribution chamber 11 to the longitudinal bar sections supplied by them.
  • at least one supply air duct 9 can also branch off on both sides in the longitudinal direction of the counter, which are possibly supplied by a fan 9 and are separated from one another by means of a vertical partition wall 15.
  • the housing 7 and the passage openings 24, 24 'for the supply air flow K and the return air flow R can also, as shown in FIG. 3, be arranged eccentrically with respect to the length of the counter.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The refrigerated counter unit is a further development of German Offenlegungsschrift 3,230,792. It is essentially characterised in that the fan is arranged in the passage opening of the bottom of the counter bed and no longer in a housing below the counter bed and it conveys the flow of intake air into a distribution chamber situated above said counter bed, from which at least one intake air channel branches off, in that the flow of return air is guided in the housing essentially vertically from the top to the bottom through the refrigeration source and the flow of intake air passing through the refrigeration source - after deflection - is guided essentially vertically from the bottom to the top to the fan in the bottom of the counter bed. A more effective refrigeration can be achieved in this manner with reduced production expenditure. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Kühlthekeneinheit, mit einem den Warenaufbewahrungsraum aufnehmenden Thekenbett, bei welcher ein von einem Gebläse geförderter Umluftstrom nach Kühlung durch eine Kältequelle, z.B. einem Verdampfer, und ggf. Befeuchtung durch eine Befeuchtungseinrichtung in den Warenaufbewahrungsraum und von diesem zurück zu der Kaltequelle und ggf. der Befeuchtungseinrichtung gefördert wird, wobei die Kältequelle und ggf. die Befeuchtungseinrichtung in einem Gehäuse unterhalb des Thekenbettes, vorzugsweise in einem gesonderten Unterbaugehäuse des Thekenbettes, angeordnet sind, das Gehäuse nur einen Bruchteil der Länge des Thekenbettes hat und der gekühlte und ggf. befeuchtete Zuluftstrom von dem Innenraum des Gehäuses über wenigstens eine Durchtrittsöffnung im Boden des Thekenbettes von dieser ausgehend mittels wenigstens eines über einen wesentlichen Teil seiner Länge in Thekenlängsrichtung verlaufenden Zuluftkanal in Thekenlängsrichtung dem dem Gehäuse zugeordneten Thekenlängsabschnitt des Warenaufbewahrungsraumes zugeleitet wird, und wobei der Rückluftstrom aus dem Warenaufbewahrungsraum über einen für alle Thekenabschnitte gemeinsamen, in Thekenlängsrichtung verlaufenden, in den Innenraum des Gehäuses mündenden Rückluftkanal zurückgeführt wird.The invention relates to a refrigerated display unit, with a counter bed accommodating the goods storage space, in which a circulating air flow conveyed by a blower after cooling by a cooling source, for example an evaporator, and possibly humidification by a humidification device in the goods storage space and back to the cold source and possibly the humidification device is conveyed, the cold source and possibly the humidification device being arranged in a housing below the counter bed, preferably in a separate sub-housing of the counter bed, the housing has only a fraction of the length of the counter bed and the cooled and possibly humidified supply air flow from the interior of the housing via at least one passage opening in the bottom of the counter bed starting from this by means of at least one supply air duct running in the longitudinal direction of the counter over a substantial part of its length in the longitudinal direction of the counter to the G e longitudinally assigned counter section of the goods storage space is supplied, and wherein the return air flow from the goods storage space is returned via a return air duct which is common to all counter sections and runs in the longitudinal direction of the counter and opens into the interior of the housing.

Eine solche Kühlthekeneinheit ist aus der DE-OS 32 30 792 bekannt. Diese hat sich zwar in der Praxis bewährt.Such a refrigerated display unit is known from DE-OS 32 30 792. This has proven itself in practice.

Aufgabe der vorliegenden Erfindung ist es jedoch, das bekannte Kühlthekenprinzip hinsichtlich geringeren Herstellungsaufwandes und wirksamerer Kühlung zu verbessern.The object of the present invention, however, is to improve the known refrigerated display principle with regard to lower production costs and more effective cooling.

Diese Aufgabe wird erfindungsgemäß im wesentlichen dadurch gelöst, daß das Gebläse in der Durchtrittsöffnung des Bodens des Thekenbettes angeordnet ist und den Zuluftstrom in eine darüber befindliche Verteilungskammer fördert, von welcher aus der wenigstens eine Zuluftkanal abzweigt, daß der Rückluftstrom in dem Gehäuse im wesentlichen senkrecht von oben nach unten durch eine Kältequelle und der die Kältequelle verlassende Zuluftstrom - nach Umkehrung - im wesentlicher senkrecht von unten nach oben zu dem Gebläse in dem Boden des Thekenbettes geführt wird.This object is achieved essentially in that the fan is arranged in the passage opening of the bottom of the counter bed and promotes the supply air flow into a distribution chamber located above, from which at least one supply air duct branches off, that the return air flow in the housing is substantially perpendicular from top down through a cold source and the supply air stream leaving the cold source - after reversal - is guided essentially vertically from bottom to top to the fan in the bottom of the counter bed.

Es hat sich überrschenderweise gezeigt, daß sich durch diese neuartige Weise der Umluftstromführung im Gehäuse zur Kühlung und ggf. Feuchtigkeitsaufnahme sowohl ein geringerer Herstellungsaufwand der Kühlthekeneinheit erforderlich als auch eine bessere Kühlleistung erzielt wird. Die besondere Art der Umluftführung im Gehäuse eröffnet die Möglichkeit, dieses in der Thekentiefe besonders kompakt zu gestalten, während das Gehäuse in Thekenlängsrichtung nicht länger zu sein braucht, als bei der vorbekannten Theke. Die verhältnismäßig kurzen Strömungswege und die Art der Anordnung der Aggregate für Erzeugung des Umluftstromes, Kühlung des Umluftstromes und ggf. Befeuchtung des Umluftstromes sorgen außerdem für eine energetisch günstige Betriebsweise. Hierfür wird lediglich in Kauf genommen, daß das Gebläse nicht mehr, wie bei der vorbekannten Theke in dem Gehäuse liegt, und insbesondere auch nicht von der Vorderseite des Gehauses durch Abnahme einer Klappe zugänglich ist. Dies ist aber möglich, weil derartige Gebläse heute einen derartigen Qualitätsstandard und geringe Störanfälligkeit haben, daß ihre Zugänglichkeit vom Thekenbett aus ausreicht. Andererseits wird mit der neuen Lösung der Trennung von Gebläse und Kältequelle und Nachordnung des Gebläses hinter die Kältequelle außerhalb des Gehäuses im Boden des Thekenbettes im Gegensatz zum Stand der Technik erreicht, daß die Verteilung des Umluftstromes über den Querschnitt der beispielsweise als Verdampfer ausgebildeten Kältequelle wesentlich besser und unabhängig von dem Gebläse gestaltet werden kann und für die Förderung des Umluftstromes übliche und damit kostengünstige Gebläse eingesetzt werden können. Das Gehäuse unterhalb des Thekenbettes dient zwar nach wie vor als Kammer für die Konditionierung der Umluft nach Temperatur und ggf. Feuchtigkeit, das Gebläse ist jedoch zur Verbesserung der Funktionsfähigkeit der Kühlthekeneinheit aus dem Innenraum des Gehäuses ausgelagert.Surprisingly, it has been shown that this novel type of circulating air flow in the housing for cooling and possibly moisture absorption both requires less production of the refrigerated display unit and also achieves better cooling performance. The special type of air circulation in the housing opens up the possibility of making it particularly compact in the depth of the counter, while the housing no longer has to be in the longitudinal direction of the counter, than at the previously known counter. The relatively short flow paths and the type of arrangement of the units for generating the circulating air flow, cooling the circulating air flow and possibly humidifying the circulating air flow also ensure an energetically favorable mode of operation. For this it is only accepted that the blower is no longer located in the housing as in the previously known counter, and in particular is also not accessible from the front of the housing by removing a flap. However, this is possible because such fans today have such a quality standard and low susceptibility to failure that their accessibility from the counter bed is sufficient. On the other hand, in contrast to the prior art, the new solution of separating the blower and cold source and rearranging the blower behind the cold source outside the housing in the bottom of the counter bed means that the distribution of the circulating air flow over the cross section of the cold source, for example designed as an evaporator, is significantly better and can be designed independently of the blower and usual and thus inexpensive blowers can be used for the promotion of the circulating air flow. The housing underneath the counter bed still serves as a chamber for conditioning the circulating air for temperature and possibly humidity, but the fan is relocated from the interior of the housing to improve the functionality of the refrigerated display unit.

Eine besonders günstige Führung des Umluftstromes in dem Gehäuse und der Kältequelle erhält man dann, wenn zwischen Kältequelle und Gehäuseboden ein Zwischenraum für die Umkehr des Zuluftstromes von senkrecht nach unten in senkrecht nach oben freigelassen ist.A particularly favorable routing of the circulating air flow in the housing and the cooling source is obtained if an intermediate space is left between the cooling source and the housing base for the reversal of the supply air flow from vertically downwards to vertically upwards.

Für die Beaufschlagung der Kältequelle durch den Rückluftstrom wird gemäß einem weiteren Merkmal der Erfindung vorgeschlagen, daß oberhalb der Kältequelle in dem Gehäuse ein Vorraum für die Verteilung des Rückluftstromes über die gesamte Querschnittsfläche der Kältequelle freigelassen ist, obgleich die Durchtrittsöffnung in dem Boden des Thekenbettes für den Rückluftstrom verhältnismäßig klein ist. Ausgehend von dieser Durchtrittsöffnung und verteilt in dem Vorraum können zusätzlich Leitbleche vorgesehen sein.For the application of the cold source by the return air flow, it is proposed according to a further feature of the invention that above the cold source in the housing a vestibule for the distribution of the return air flow over the entire cross-sectional area of the cold source is left open, although the passage opening in the bottom of the counter bed for the Return air flow is relatively small. Starting from this passage opening and distributed in the vestibule, additional baffles can be provided.

Für die Befeuchtung des Zuluftstromes und die kompakte Ausgestaltung des Gehäuses ist es von besonderem Vorteil, wenn die, beispielsweise als Sterildampferzeuger ausgebildete, Befeuchtungseinrichtung außerhalb des Gehäuses, beispielsweise an bzw. in der Rückfront des Thekenbettes, angeordnet ist und die Feuchtigkeit über ein in dem im wesentlichen senkrecht aufsteigenden Zuluftstrom liegendes Düsenrohr dem Innenraum des Gehäuses zugeführt wird. Hierdurch wird gleichzeitig erreicht, daß die Steuerung der Befeuchtungseinrichtung von dem Verkaufspersonal gut überwacht und gesteuert werden kann, während eine günstige Feuchtigkeitsverteilung im Innenraum des möglichst kompakten Gehäuses erfolgt.For the humidification of the supply air flow and the compact design of the housing, it is particularly advantageous if the humidification device, which is designed, for example, as a sterile steam generator, is arranged outside the housing, for example on or in the rear of the counter bed, and the moisture is above the inside of the substantially vertical ascending supply air flow nozzle tube is supplied to the interior of the housing. This also ensures that the control of the humidification device can be well monitored and controlled by the sales staff, while a favorable moisture distribution takes place in the interior of the most compact housing possible.

Wenn gemäß einem weiteren Merkmal der Erfindung die, beispielsweise als Verdampfer ausgebildete, Kältequelle an einer käuferseitigen Seitenwand des Gehäuses anliegt, wird der Rückluftstrom zwangsläufig durch die Kältequelle geführt und steigt verkäuferseitig in Richtung der Durchtrittsoffnung im Boden des Thekenbettes auf und kann demgemäß durch einfache Strömungsführung verkäuferseitig dem Warenaufbewahrungsraum beaufschlagt werden.If, according to a further feature of the invention, the cold source, for example in the form of an evaporator, bears against a side wall of the housing on the buyer side, the return air flow is inevitably guided through the cold source and rises on the seller side in the direction of the passage opening in the bottom of the counter bed and can accordingly be done on the seller side by simple flow guidance be placed in the goods storage room.

Die Durchtrittsöffnung für den Rückluftstrom in dem Boden des Thekenbettes liegt vorzugsweise verkäuferseitig (gerade noch) über der Kältequelle. Auf diese Weise wird erreicht, daß der Rückluftstrom unterhalb des Warenauflagebleches in dem Warenaufbewahrungsraum entgegen der Richtung des Umluftstromes in dem Warenaufbewahrungsraum über eine möglichst lange Strecke zurückgeführt und der Warenauflageboden damit bestmöglichst auch von unten gekühlt wird.The passage opening for the return air flow in the floor of the counter bed is preferably (just now) on the seller side above the cold source. In this way it is achieved that the return air flow below the goods support plate in the goods storage space is returned against the direction of the circulating air flow in the goods storage space over as long a distance as possible and the goods support floor is thus cooled as well as possible from below.

Zweckmäßigerweise macht die Höhe der Kältequelle etwa 1/2 bis 2/3 der lichten Höhe des Innenraumes des Gehäuses aus. Hierdurch ergeben sich bei der erforderlichen Leistung der Kältequelle günstige Strömungsverhältnisse in dem Vorraum vor der Kältequelle und in dem Zwischenraum unter der Kältequelle.The height of the cold source expediently makes up about 1/2 to 2/3 of the clear height of the interior of the housing. This results in favorable flow conditions in the anteroom in front of the cold source and in the space under the cold source with the required power of the cold source.

Ferner sollte die Tiefe, also die in Richtung Käuferseite-Verkäuferseite herrschende Abmessung, etwa 1/2 bis 2/3 der lichten Tiefe des Innenraumes des Gehäuses ausmachen. Hierdurch wird erreicht, daß bei der erforderlichen Leistung der Kältequelle ein hinreichender Freiraum für das vertikale Aufströmen des Zuluftstromes vorhanden ist, in welchem dann ggf. auch die Befeuchtung des Zuluftstromes erfolgen kann.Furthermore, the depth, that is to say the dimension prevailing in the direction of the buyer-seller side, should make up about 1/2 to 2/3 of the clear depth of the interior of the housing. This ensures that, with the required power of the cooling source, there is sufficient free space for the vertical inflow of the supply air flow, in which the supply air flow can then also be humidified if necessary.

Für die Verteilung des Zuluftstromes von der zentralen in dem Gehäuse aufgenommenen Kühl/Befeuchtungseinheit aus kann es von Vorteil sein, wenn gemäß einer Weiterbildung des Erfindungsgedankens sich der wenigstens eine Zuluftkanal von der Verteilerkammer ausgehend zu dem von ihm versorgten Thekenlängsabschnitt hin im Querschnitt verjüngt.For the distribution of the supply air flow from the central cooling / humidification unit accommodated in the housing, it can be advantageous if, according to a further development of the inventive concept, the at least one supply air duct tapers in cross-section, starting from the distribution chamber and towards the longitudinal longitudinal section supplied by it.

Von der Verteilerkammer aus zweigen zweckmäßigerweise nach beiden Seiten in Thekenlängsrichtung wenigstens ein Zuluftkanal ab. Auf diese Weise können die Längen, über welche die gekühlte oder ggf. befeuchtete Zuluft transpiortiert werden muß, gering gehalten werden.At least one supply air duct expediently branches off from the distribution chamber on both sides in the longitudinal direction of the counter. In this way, the lengths over which the cooled or possibly humidified supply air must be transported can be kept short.

Zur Bestimmung besonderer Verteilungsverhältnisse, beispielsweise dann, wenn verschiedene Thekenabschnitte der Kühlthekeneinheit unterschiedlich gekühlt und/oder befeuchtet werden sollen, kann es auch zweckmäßig sein, das Gehäuse und die Durchtrittsöffnung für den Zuluftstrom und den Rückluftstrom außermittig bezogen auf die Thekenlänge anzuordnen. Weitere Merkmale der Erfindung sind Gegenstand des Anspruchs 5, Vorteile und Anwendungsmöglichkeiten der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen anhand der Zeichnung.To determine special distribution conditions, for example when different counter sections of the refrigerated display unit are to be cooled and / or moistened differently, it may also be expedient to arrange the housing and the passage opening for the supply air flow and the return air flow off-center in relation to the length of the counter. Further features of the invention are the subject of claim 5, advantages and possible uses of the present invention result from the following description of exemplary embodiments with reference to the drawing.

Es zeigen:

Fig. 1
schematisch einen Querschnitt einer die Erfindung aufweisenden Kühlthekeneinheit, und
Fig. 2 und 3
schematisch Draufsichten auf zwei unterschiedliche Kühlthekeneinheiten nach der Erfindung im Bereich des Thekenbettes.
Show it:
Fig. 1
schematically shows a cross section of a refrigerated display unit having the invention, and
2 and 3
schematic top views of two different refrigerated display units according to the invention in the area of the counter bed.

Die Kühlthekeneinheit 1 gemäß Fig. 1 hat einen Warenaufbewahrungsraum 2, welcher von einem Thekenbett 3 aufgenommen ist. Der Warenaufbewahrungsraum 2 wird von einem Thekenaufsatz 23 wenigstens käuferseitig abgedeckt und kann beidseitig von etwa der Thekenkontur entsprechenden Seitenwänden 31 begrenzt sein. Verkäuferseitig schließt sich an den Warenaufbewahrungsraum 2 eine Arbeitsplatte 16 für das Verkaufspersonal oberhalb der Thekenrückfront an, die von einzelnen kastenförmigen Elementen 32 gebildet ist. In dem Warenaufbewahrungsraum 2 befindet sich ein herausnehmbarer Warenauflageboden 21, wobei ein im wesentlichen über die gesamte Thekenlänge wirksamer Abzugsschlitz 22 freigehalten ist. Unterhalb des Thekenbettes 3 ist ein Gehäuse 7 angeordnet, welches nur einen Bruchteil der Länge des Thekenbettes 3 ausmacht. Verkäuferseitig ist der Innenraum 8 des Gehäuses 7 über eine mit einer Klappe 12' verschließbaren Montageöffnung 12 zugänglich. Das Gehäuse 7 steht über zwei strömungstechnisch voneinander getrennte Öffnungen 24 (für den Zuluftstrom K) und 24' (für den Rückluftstrom R) in Strömungsverbindung. Die Durchtrittsöffnungen 24, 24' haben also allenfalls die Länge des Gehäuses 7 in Thekenlängsrichtung. Der Umluftstrom wird von einem Gebläse 5 gefördert, nachdem dieser in einer in dem Gehäuse 7 untergebrachten Kältequelle 4, z.B. einem Verdampfer, gekühlt und ggf. befeuchtet wurde. Die Befeuchtung erfolgt in dem dargestellten Fall über einen in einem der Kastenelemente 32 der Thekenrückfront angeordneten als Sterildampferzeuger ausgebildeten Befeuchtungseinrichtung 6. Der Sterildampf wird von einem Düsenrohr 6' in den Innenraum 8 abgegeben. Die gekühlte und ggf. befeuchtete Zuluft K wird über das im Boden 18 des Thekenbettes 3 angeordnete Gebläse 5 in eine darüber befindliche Verteilerkammer 11 abgegeben. Das Gebläse 5 ist vom Thekenbett 3 aus zugänglich und stört nicht die Zugänglichkeit der Kältequelle 4 im Gehäuse 7. Von der Verteilerkammer 11 zweigen in Thekenlängsrichtung ggf. in beiden Richtungen Zuluftkanäle 9 ab, welche sich über einen wesentlichen Teil ihrer Länge in Thekenlängsrichtung bis zu dem betreffenden Thekenlängsabschnitt erstrecken, an welchen die gekühlte und ggf. befeuchtete Zuluft K in den Warenaufbewahrungsraum 2 abgegeben werden soll. Hier münden die Zuluftkanäle 9 in jeweils vertikal aufwärts verlaufende Kanäle 33, welche über eine ggf. mit Lamellenblechen 17 versehene Austrittsöffnung 10 unmittelbar unter der Arbeitsplatte 16 in den Warenaufbewahrungsraum 2 münden. Die vertikalen Kanäle 33 werden auf ihrer Rückseite von der wärmeisolierten Thekenbettrückwand 30 begrenzt. Auf der Seite des Warenaufbewahrungsraums 2 grenzen sie an dadurch gekühlte Leitbleche. Von der Austrittsöffnung 10 aus fällt die kalte und ggf. befeuchtete Zuluft K leicht von der Verkäuferseite V zur Käuferseite E der Kühlthekeneinheit 1 hin ab und verläßt den Warenaufbewahrungsraum 2 über den vorderen Abszugsschlitz 22. Von hier an wird die Rückluft R unterhalb des Warenaufnahmebodens 21 über die gesamte Länge der Kühlthekeneinheit 1 in Richtung der Verkäuferseite V zurückgeführt, und zwar bis zu einem sich über die gesamte Thekenlänge erstreckenden Eintrittsschlitz 19, welcher in einen sich ebenfalls über die gesamte Thekenlänge erstreckenden Rückluftkanal 20 mündet. Der Rückluftkanal 20 steht über die Durchtrittsöffnung 24', die nicht länger ist als der Innenraum 8 des Gehäuses 7, mit dem Innenraum 8 des Gehäuses 7 in Strömungsverbindung. Der Rückluftstrom R gelangt von der Durchtrittsöffnung 24' in einen Vorraum 26, welcher oberhalb der an der käuferseitigen Seitenwand 28 des Gehäuses 7 angeordneten Kältequelle 4 vorgesehen ist. Von der Durchtrittsöffnung 24' zu der Kältequelle 4 können sich Verteilerbleche 27 erstrecken, um eine möglichst gleichmäßige Beaufschlagung des wirksamen Querschnittes der Kältequelle 4 mit dem Rückluftstrom R zu erreichen. In der Kältequelle 4 strömt der Rückluftstrom über deren gesamte Höhe im wesentlichen senkrecht von oben nach unten. Zwischen Kältequelle 4 und Gehäuseboden 9 ist ein Zwischenraum 25 freigelassen, in welchem der nunmehr bereits gekühlte Umluftstrom eine Richtungsumkehr erfährt und in dem verkäuferseitigen Teil des Innenraums 8 des Gehäuses 7 im wesentlichen senkrecht von unten nach oben zu dem in dem Boden 18 des Thekenbettes 3 angeordneten Gebläse 5 strömt. Auf dem Weg von dem unteren Austritt aus der Kältequelle 4 bis zu dem Gebläse 5 wird in dem dargestellten Fall dem Zuluftstrom K über das Düsenrohr 6' Feuchtigkeit in Form von Dampf zugeführt. Das Düsenrohr 6' kann mit einem Leitblech 13 versehen sein, um den Austritt des Dampfes aus dem Düsenrohr 6' zu fördern. Nun beginnt der Kreislauf des Umluftstromes ausgehend von der Verteilerkammer 11 von Neuem. Die Ausgestaltung der Zuluftkanäle 9, der Verteilerkammer 11, der Abteilung der Zuluftkanäle 9 und der Verteilerkammer 11 von dem Rückluftkanal 20 und der Vorkammer 25 sowie ein Teil des Bodens 18 des Thekenbettes 3 können von Blechen 14, 14', 14'', 14''' gebildet sein, welche, ggf. mit der inneren Begrenzung der Kanäle 33 zur Vereinfachung der Montage als eine Einheit ausgebildet sein können.The refrigerated display unit 1 according to FIG. 1 has a goods storage space 2 which is received by a counter bed 3. The goods storage space 2 is covered by a counter top 23 at least on the buyer side and can be delimited on both sides by side walls 31 corresponding approximately to the counter contour. On the seller side, a work surface 16 for the sales personnel above the rear of the counter adjoins the goods storage space 2 and is formed by individual box-shaped elements 32. In the goods storage space 2 there is a removable goods shelf 21, with an extraction slot 22 which is effective essentially over the entire length of the counter being kept free. A housing 7 is arranged below the counter bed 3, which only makes up a fraction of the length of the counter bed 3. On the seller side, the interior 8 of the housing 7 is accessible via an assembly opening 12 which can be closed by a flap 12 '. The housing 7 is in flow connection via two openings 24 (for the supply air flow K) and 24 '(for the return air flow R) that are separated from one another in terms of flow technology. The through openings 24, 24 'thus have at most the length of the housing 7 in the longitudinal direction of the counter. The circulating air flow is conveyed by a blower 5 after it has been cooled and possibly humidified in a cold source 4, for example an evaporator, accommodated in the housing 7. In the illustrated case, the humidification takes place via a humidification device 6, which is arranged in one of the box elements 32 of the counter front and is designed as a sterile steam generator. The sterile steam is emitted into the interior 8 from a nozzle pipe 6 '. The cooled and possibly humidified supply air K is discharged via the fan 5 arranged in the bottom 18 of the counter bed 3 into a distribution chamber 11 located above it. The fan 5 is accessible from the counter bed 3 and does not interfere with the accessibility of the cold source 4 in the housing 7. In the longitudinal direction of the counter, supply air ducts 9 branch off from the distribution chamber 11, which extend over a substantial part of their length in the longitudinal direction of the counter to the relevant longitudinal section of the counter, at which the cooled and optionally humidified supply air K is discharged into the goods storage space 2 shall be. Here, the supply air ducts 9 open into vertically upwardly extending ducts 33, which open into the goods storage space 2 directly below the worktop 16 via an outlet opening 10 which may be provided with lamella plates 17. The vertical channels 33 are delimited on their rear side by the thermally insulated counter bed rear wall 30. On the side of the goods storage space 2, they adjoin the guide plates cooled thereby. From the outlet opening 10, the cold and possibly humidified supply air K falls slightly from the seller side V to the buyer side E of the refrigerated display unit 1 and leaves the goods storage space 2 via the front extraction slot 22. From here on, the return air R is below the goods receiving floor 21 the entire length of the refrigerated display unit 1 is returned in the direction of the seller's side V, to an inlet slot 19 which extends over the entire length of the counter and which opens into a return air duct 20 which also extends over the entire length of the counter. The return air duct 20 is in flow connection with the interior 8 of the housing 7 via the passage opening 24 ', which is no longer than the interior 8 of the housing 7. The return air flow R passes from the passage opening 24 'into an anteroom 26 which is provided above the cold source 4 arranged on the side wall 28 of the housing 7 on the buyer side. Distribution plates 27 can extend from the passage opening 24 'to the cold source 4 in order to apply the effective cross section of the cross section as evenly as possible To reach cold source 4 with the return air flow R. In the cold source 4, the return air flow flows essentially vertically from top to bottom over its entire height. Between the cold source 4 and the housing base 9, an intermediate space 25 is left free, in which the already cooled circulating air flow undergoes a reversal of direction and in the seller-side part of the interior 8 of the housing 7 is arranged essentially perpendicularly from bottom to top to that arranged in the bottom 18 of the counter bed 3 Fan 5 flows. On the way from the lower outlet from the cold source 4 to the blower 5, in the case shown, the supply air flow K is supplied with moisture in the form of steam via the nozzle pipe 6 '. The nozzle tube 6 'can be provided with a baffle 13 to promote the exit of the steam from the nozzle tube 6'. Now the circulation of the circulating air flow starts again from the distribution chamber 11. The configuration of the supply air ducts 9, the distribution chamber 11, the department of the supply air ducts 9 and the distribution chamber 11 of the return air duct 20 and the prechamber 25 as well as part of the bottom 18 of the counter bed 3 can be made from sheets 14, 14 ', 14'',14''' which, if necessary, can be formed as a unit with the inner delimitation of the channels 33 to simplify assembly.

Entsprechend der zeichnerischen Darstellung ist da Gehäuse 7 als gesondertes Unterbaugehäuse nur unterhalb etwa der verkäuferseitigen Hälfte der Tiefe des Thekenbettes 3 angeordnet. Die Durchtrittsöffnung 24' für den Rückluftstrom R liegt in dem Boden 18 des Thekenbettes 3 soweit wie möglich verkäuferseitig gerade noch über der Kältequelle 4. Auf diese Weise kann eine möglichst gute Kühlung des Warenauflagebodens 21 bei dennoch günstiger Strömungsverteilung in der Kältequelle 4 erreicht werden. Die Höhe der Kältequelle 4 macht zwischen etwa 1/2 bis 2/3 der lichten Höhe des Innenraumes 8 des Gehäuses 7 aus. Die Tiefe der Kältequelle 4 macht etwa 1/2 bis 2/3 der lichten Tiefe des Innenraumes des Gehäuses 7 aus.According to the drawing, the housing 7 is arranged as a separate sub-housing only below approximately half the depth of the counter bed 3 on the seller side. The passage opening 24 'for the return air flow R lies in the bottom 18 of the counter bed 3 as far as possible on the seller side just above the cold source 4. In this way, the best possible cooling of the goods support base 21 can be achieved with a favorable flow distribution in the cold source 4. The height of the cold source 4 makes between about 1/2 to 2/3 of the clear height of the interior 8 of the housing 7. The depth of the cold source 4 makes up about 1/2 to 2/3 of the clear depth of the interior of the housing 7.

Auf diese Weise kann eine zweckmäßige Dimensionierung des Zwischenraumes 25, der Vorkammer 26 und des verkäuferseitig von der Kältequelle 4 liegenden Teiles des Innenraumes 8 vorgesehen werden, in welchem die Zuluft K im wesentlichen vertikal von unten nach oben strömt.In this way, an appropriate dimensioning of the intermediate space 25, the antechamber 26 and the part of the interior 8 lying on the seller side from the cold source 4 can be provided, in which the supply air K flows essentially vertically from bottom to top.

Wie aus den Fig. 2 und 3 ersichtlich, können die Zuluftkanäle 9 von der Verteilerkammer 11 ausgehend zu den von ihnen versorgten Thekenlängsabschnitten hin im Querschnitt verjüngt sein. Von der Verteilerkammer 11 aus können ferner nach beiden Seiten in Thekenlängsrichtung wenigstens ein Zuluftkanal 9 abzweigen, welche ggf. von je einem Gebläse 9 versorgt werden und mittels einer vertikalen Teilungswand 15 voneinander getrennt sind. Das Gehäuse 7 und die Durchtrittsöffnungen 24, 24' für den Zuluftstrom K und den Rückluftstrom R können ferner, wie aus Fig. 3 ersichtlich, außermittig bezogen auf die Thekenlänge angeordnet sein. Durch Variation dieser Gestaltungen und Bemessungen kann eine günstige Verteilung der hinsichtlich Temperatur und Feuchtigkeit optimal konditionierten Umluft zu den verschiedenen Thekenabschnitten gewährleistet werden.As can be seen from FIGS. 2 and 3, the supply air channels 9 can be tapered in cross-section from the distribution chamber 11 to the longitudinal bar sections supplied by them. From the distribution chamber 11, at least one supply air duct 9 can also branch off on both sides in the longitudinal direction of the counter, which are possibly supplied by a fan 9 and are separated from one another by means of a vertical partition wall 15. The housing 7 and the passage openings 24, 24 'for the supply air flow K and the return air flow R can also, as shown in FIG. 3, be arranged eccentrically with respect to the length of the counter. By varying these designs and dimensions, a favorable distribution of the circulating air, which is optimally conditioned with regard to temperature and humidity, to the various counter sections can be guaranteed.

Claims (12)

  1. Cold counter unit having a counter bed (3) which accommodates the goods-storage space (2), in which a circulating air current, conveyed by a fan (5), after cooling by means of a cold source (4), for example, an evaporator, and, if applicable, moistening by means of a moistening device (6) is conveyed into the goods-storage space (2) and from the latter back to the cold source (4) and, if applicable, the moistening device (6), in which the cold source (4) and, if applicable, the moistening device (6) are arranged in a housing (7) below the counter bed (3), preferably in a separate substructure housing of the counter bed (3), the housing (7) only has a fraction of the length of the counter bed (3) and the cooled and, if applicable, moistened supply air current (K) is directed from the interior space (8) of the housing (7), by way of at least one through-opening (24) in the base (18) of the counter bed (3), issuing from said opening, by means of at least one supply air duct (9), which extends over a substantial portion of its length in the longitudinal direction of the counter, in the longitudinal direction of the counter to the longitudinal counter section of the goods-storage space (2) associated with the housing (7), and in which the return air current (R) is guided back from the goods-storage space (2) by way of a return air duct (20) which is common to all counter sections, extends in the longitudinal direction of the counter and runs into the interior space (8) of the housing (7), characterised in that the fan (5) is arranged in the through-opening (24) of the base (18) of the counter bed (3) and conveys the supply air current (K) into a distributor chamber (11) which is located above it and from which there branches off the at least one supply air duct (9), in that the return air current (R) in the housing (7) is guided in a substantially vertical manner from the top to the bottom through the cold source (4) and the supply air current (K) leaving the cold source (4) - after reversal - is guided in a substantially vertical manner from the bottom to the top to the fan (5) in the base (18) of the counter bed (3).
  2. Cold counter unit according to claim 1, characterised in that between cold source (4) and housing base (29) an intermediate space (25) is left free, for the reversal of the supply air current (K) from vertically downwards to vertically upwards.
  3. Cold counter unit according to claim 1 or 2, characterised in that above the cold source (4) in the housing (7) an antechamber (26) is left free for the distribution of the return air current (R) over the whole cross-sectional area of the cold source (4).
  4. Cold counter unit according to one of the claims 1 to 3, characterised in that the moistening device (6), formed, for example, as a sterile steam generator, is arranged outside the housing (7), for example on or in the rear face of the counter bed (3), and the moisture is supplied to the interior space (8) of the housing (7) by way of a nozzle tube (6') which lies in the supply air current (K) rising in a substantially vertical manner.
  5. Cold counter unit according to one of the claims 1 to 4, in which the cooling air current in the goods-storage space (2) is guided from the seller's side (V) to the buyer's side (E) of the counter bed (3), characterised in that the housing (7) on the seller's side is arranged only below substantially the half of the depth of the counter bed (3) which is on the seller's side.
  6. Cold counter unit according to one of the claims 1 to 4, characterised in that the cold source (4), formed, for example, as an evaporator, rests against a side wall (28) of the housing (7) which is on the buyer's side.
  7. Cold counter unit according to one of the claims 1 to 6, characterised in that the through-opening (24') for the return air current (R) is arranged in the base (18) of the counter bed (3) on the seller's side above the cold source (4).
  8. Cold counter unit according to one of the claims 1 to 7, characterised in that the height of the cold source (4) amounts to approximately 1/2 to 2/3 of the clear height of the interior space (8) of the housing (7).
  9. Cold counter unit according to one of the claims 1 to 8, characterised in that the depth of the cold source amounts to approximately 1/2 to 2/3 of the clear depth of the interior space (8) of the interior space (8) of the housing (7).
  10. Cold counter unit according to one of the claims 1 to 9, characterised in that the at least one supply air duct (9) tapers in cross section starting from the distributor chamber (11) towards the longitudinal counter section supplied by it.
  11. Cold counter unit according to one of the claims 1 to 10, characterised in that at least one supply air duct (9) branches off from the distributor chamber (11) to both sides in the longitudinal direction of the counter.
  12. Cold counter unit according to one of the claims 1 to 11, characterised in that the housing (7) and the through-opening (24, 24') for the supply air current (K) and the return air current (R) are arranged eccentrically relative to the counter length.
EP87102570A 1986-02-25 1987-02-24 Refrigerated counter unit Expired - Lifetime EP0234551B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87102570T ATE75119T1 (en) 1986-02-25 1987-02-24 REFRIGERATED UNIT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3605967 1986-02-25
DE19863605967 DE3605967A1 (en) 1986-02-25 1986-02-25 COOLING UNIT

Publications (3)

Publication Number Publication Date
EP0234551A2 EP0234551A2 (en) 1987-09-02
EP0234551A3 EP0234551A3 (en) 1990-02-07
EP0234551B1 true EP0234551B1 (en) 1992-04-22

Family

ID=6294858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102570A Expired - Lifetime EP0234551B1 (en) 1986-02-25 1987-02-24 Refrigerated counter unit

Country Status (3)

Country Link
EP (1) EP0234551B1 (en)
AT (1) ATE75119T1 (en)
DE (2) DE8605004U1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9114724U1 (en) * 1991-08-24 1992-04-16 Nax Gmbh & Co Ladenbau Kg, 6000 Frankfurt, De

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2203991A (en) * 1939-06-15 1940-06-11 Andrew J Johnson Beverage cooler
GB843226A (en) * 1958-01-10 1960-08-04 Parnall & Sons Ltd Improvements in and relating to refrigerating cabinets
US3358467A (en) * 1965-07-16 1967-12-19 Clark Equipment Co Refrigerated case drain blockage warning structure
AT272385B (en) * 1967-07-28 1969-07-10 Kurt Dunkel Air circulation refrigeration units
DE7735143U1 (en) * 1977-11-16 1978-02-16 Brown Boveri - York Kaelte- Und Klimatechnik Gmbh, 6800 Mannheim SERVICE COOLER
DE2909811A1 (en) * 1979-03-13 1980-09-25 Linde Ag Refrigerated food cabinet with steam generator - has pipe inside air circulating part with end emerging in annular perforated pipe
DE3230792C2 (en) * 1982-08-19 1986-10-23 Nax GmbH & Co Ladenbau KG, 6000 Frankfurt Refrigerated counter unit

Also Published As

Publication number Publication date
EP0234551A2 (en) 1987-09-02
EP0234551A3 (en) 1990-02-07
DE8605004U1 (en) 1989-01-05
DE3605967A1 (en) 1987-08-27
ATE75119T1 (en) 1992-05-15

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