EP0027584A2 - Refrigerated vending unit - Google Patents

Refrigerated vending unit Download PDF

Info

Publication number
EP0027584A2
EP0027584A2 EP80106017A EP80106017A EP0027584A2 EP 0027584 A2 EP0027584 A2 EP 0027584A2 EP 80106017 A EP80106017 A EP 80106017A EP 80106017 A EP80106017 A EP 80106017A EP 0027584 A2 EP0027584 A2 EP 0027584A2
Authority
EP
European Patent Office
Prior art keywords
freezer
evaporator
refrigerated
compartment
chest
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Withdrawn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
EP80106017A
Other languages
German (de)
French (fr)
Other versions
EP0027584A3 (en
Inventor
Eugen Häni
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 EP0027584A2 publication Critical patent/EP0027584A2/en
Publication of EP0027584A3 publication Critical patent/EP0027584A3/en
Withdrawn legal-status Critical Current

Links

Images

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2511—Evaporator distribution valves

Definitions

  • the invention relates to a refrigerated display case with a refrigerated compartment and a deep-freeze compartment.
  • DE-OS 26 06 779 has already made known a frozen sales chest, on which an attachment is arranged to enlarge the range of goods on offer. Frozen food is offered in such a cabinet in the chest, while the essay is used to present uncooled goods.
  • freezers are confusing and come into their own.
  • the goods are not always easily accessible to the customer; especially if the chest is not completely full, the customer has to bend far down. All of these factors inhibit sales.
  • freezers have the great advantage that they can be operated particularly cheap in terms of energy, since they are only open at the top and therefore little warm ambient air can penetrate.
  • the invention is therefore based on the object of developing a refrigerated display cabinet of the type described at the outset which can be operated in an energy-saving manner and which allows a clear presentation, in particular of the frozen goods.
  • the refrigerator compartment is formed by a chest and the freezer compartment by a cupboard-shaped attachment arranged on the chest.
  • a freezer is created according to the invention, i.e. a refrigerator that works at temperatures in the range of 0 ° C and above.
  • dairy products or meat and sausage products are offered.
  • the freezer arranged according to the invention on the freezer is closed, for example, with glass doors to prevent warm air from entering. Frozen goods are placed clearly and in a sales-promoting manner in the attachment.
  • the arrangement of the freezer and freezer unit according to the invention also has a very significant advantage: cold air from the freezer unit, which escapes through inevitable leaks and when the glass doors are opened, falls into the freezer located underneath. The energy that must be applied to maintain the temperature in the freezer is therefore very low.
  • the chest and top have separate evaporators which are connected in parallel to a single refrigeration generator are.
  • the refrigerated display case is cooled by a cooling circuit in which a coolant is compressed, condensed, expanded and evaporated.
  • the term "refrigeration generator” essentially means a compressor, a condenser and an expansion valve.
  • An evaporator is located in the freezer and in the freezer.
  • the evaporators are connected in parallel to the refrigeration unit.
  • the cooling capacity for cooling the freezer is considerably higher than the cooling capacity required for the freezer.
  • the refrigeration unit is therefore sufficiently dimensioned for the freezer unit.
  • the cooling capacity transferred to the chest and the top is matched to the respective cooling requirement. This can be done, for example, by appropriately dimensioning the evaporator surface or the flow cross sections in the coolant line. According to a proposal according to the invention, however, it is particularly expedient if in the pressure lines between the refrigeration generator and the evaporators there is a solenoid valve controlled via temperature sensors arranged on the associated evaporators.
  • the solenoid valve automatically opens the associated pressure line and refrigerant flows into the evaporator.
  • the solenoid valves can be switched in two ways: Either both valves work completely independently of one another. This circuit allows a particularly precise metering of the refrigerant, but has the disadvantage that the compressor switches on and off very often, which accelerates wear.
  • Another option is to use the solenoid valve belonging to the freezer evaporator, depending on the solenoid valve in front of the cooler Control evaporator, while conversely the solenoid valve upstream of the freezer does not affect that before the cooling evaporator.
  • the solenoid valve in front of the freezer evaporator also opens. Since the cooling evaporator's cooling requirement is very low anyway, this does not result in any significant undercooling of the freezer evaporator. However, this can significantly reduce the number of times the compressor is switched on and off.
  • the suction side of the evaporator assigned to the freezer compartment is connected via a check valve to the suction side of the evaporator assigned to the cooling compartment and this is connected to the refrigeration generator via a suction line.
  • the check valve prevents the coolant from flowing back into the deep-freeze evaporator when the compressor is at a standstill. Otherwise, the coolant would at least partially recondense in the evaporator.
  • the lines are fastened to the cooling generator with couplings.
  • the refrigeration device can be disconnected from the refrigerator very quickly, for example for repair, and, if necessary, replaced with a new one.
  • a refrigerated display cabinet designed as a complete unit is advantageous, since no pipelines or even wall openings are necessary for an external refrigeration generator, that is to say arranged outside the cabinet.
  • the refrigerated display unit is delivered ready for connection and is ready for operation after the connection lines have been manufactured.
  • the refrigeration unit is arranged above the top so that, on the one hand, the available volume of goods can be optimally used and, on the other hand, to prevent the ascending waste heat from the refrigeration unit from entering the sales furniture.
  • FIG. 1 shows an inventive refrigerated cabinet with a refrigerated compartment in the form of a chest 1 and a freezer attachment 2 arranged thereon.
  • the refrigerated cabinet is designed as a structural unit with continuous side walls.
  • the freezer attachment 2 is designed as a cabinet and has doors 3 with insulating glass on its front. The insulating glazing prevents fogging of the panes on the one hand and warm ambient air entering the cabinet on the other.
  • the cabinet there are several consoles 4 on which frozen goods are displayed.
  • the freezer which is operated at temperatures of 0 ° C and above, is used, for example, to hold dairy products or meat and sausage products. Due to the arrangement of freezer 1 and Freezer attachment 2 it is possible to offer chilled and frozen goods in a confined space. In particular, the valuable frozen foods, such as ice cream, seafood and the like. be placed clearly visible and effective for sales at eye level of the customer.
  • the refrigerated display cabinet according to the invention also has the advantage that cold air, which escapes from the freezer unit as a result of inevitable leaks and when the doors are opened, falls into the freezer 1 located underneath.
  • This additional cooling with "waste cold" from the freezer attachment 2 means that the energy expenditure which has to be applied to cool the freezer is very low.
  • a refrigeration generator 6 is arranged on the top 2, which essentially contains a compressor 7 for a refrigerant, a condenser 8, a collecting bottle 9 for liquefied refrigerant and an expansion valve (not shown in the figure).
  • a fan for cooling the condenser is designated 10. The cooling generator is surrounded by a panel 5.
  • the cold generator 6 is accommodated at a location which cannot be used as a sales area anyway, since it is above the range of the customer. In addition, there is the further advantage that the rising waste heat from the refrigeration generator 6 cannot get into the refrigerated sales cabinet.
  • the cold generator 6 is connected to a deep-freeze evaporator 11 in the deep-freeze attachment 2 and a cooling evaporator 12 in the chest 1.
  • the connecting lines are not shown for better clarity.
  • the circuit diagram can be seen in FIG. 2.
  • Fans 13, 14 circulate the air in compartments 1, 2, the air cooling when the evaporators 11, 12 are swept over, then sweeping over the goods to be cooled and then again meeting the evaporators 11, 12.
  • FIG. 2 shows schematically the refrigeration of the refrigerated display cabinet according to the invention.
  • the same reference numerals are used for analog components as in FIG. 1.
  • the at least partially liquefied refrigerant is removed from the refrigeration generator 6 via a pressure line 20.
  • the lines leading to the freezer evaporator 11 and the cooling evaporator 12 are open or blocked.
  • the position of the valves 15, 16 is influenced by temperature sensors 17, 18 which measure the temperatures prevailing at the evaporators 11 and 12, respectively.
  • the solenoid valves 15, 16 can be switched independently of one another and only as a function of the temperature of the evaporator connected downstream. However, a circuit is also possible in which the solenoid valve 16 in front of the freezer evaporator 11 is also opened when the solenoid valve 15 opens. This reduces the number of times the compressor motor is switched on and off in the refrigeration generator. On the other hand, the additional cold, which is supplied to the freezer evaporator 11 when the solenoid valve 16 is opened at the same time, is so because of the relatively low cooling requirement of the cooling evaporator 12 low that there is no significant undercooling of the evaporator 11.
  • a non-return valve 19 is arranged in the suction line 21 for the refrigerant between the deep-freeze evaporator 11 and the cooling evaporator 12.
  • the check valve 19 prevents the refrigerant in the freezer evaporator 11 from recondensing when the solenoid valves 15, 16 are closed and the compressor motor is switched off.
  • the lines 20, 21 are made of a flexible material and attached to the refrigeration unit via couplings, not shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)

Abstract

In a refrigerated vending unit having a refrigeration compartment and a freezer compartment, the refrigeration compartment is formed by a chest (1) and the freezing compartment by a cabinet-shaped attachment (2) arranged on the chest (1). The chest and the attachment can have separate evaporators (11, 12) which are connected in parallel to a single refrigeration generator (6). <IMAGE>

Description

Die Erfindung betrifft ein Verkaufskühlmöbel mit einem Kühlabteil und einem Tiefkühlabteil.The invention relates to a refrigerated display case with a refrigerated compartment and a deep-freeze compartment.

Durch die DE-OS 26 06 779 ist bereits eine tiefgekühlte Verkaufstruhe bekannt geworden, auf der zur Vergrößerung der Warenangebotsfläche ein Aufsatz angeordnet ist. Tiefkühlkost wird bei einem solchen Verkaufskühlmöbel in der Truhe angeboten, während der Aufsatz zur Präsentation von ungekühlten Waren dient.DE-OS 26 06 779 has already made known a frozen sales chest, on which an attachment is arranged to enlarge the range of goods on offer. Frozen food is offered in such a cabinet in the chest, while the essay is used to present uncooled goods.

Bei Tiefkühltruhen besteht der Nachteil, daß die darin ausgestellten, größtenteils hochwertigen Waren unübersichtlich angeordnet sind und schlecht Zur Geltung kommen. Außerdem ist die Ware für den Kunden nicht immer leicht zugänglich; vor allem, wenn die Truhe nicht ganz gefüllt ist, muß sich der Kunde weit hinunterbeugen. Alle diese Faktoren wirken verkaufshemmend.The disadvantage of freezers is that the mostly high-quality goods on display are confusing and come into their own. In addition, the goods are not always easily accessible to the customer; especially if the chest is not completely full, the customer has to bend far down. All of these factors inhibit sales.

Andererseits besitzen Tiefkühltruhen den großen Vorteil, daß sie energetisch besonders günstig betrieben werden können, da sie nur nach oben offen sind und somit wenig warme Umgebungsluft eindringen kann.On the other hand, freezers have the great advantage that they can be operated particularly cheap in terms of energy, since they are only open at the top and therefore little warm ambient air can penetrate.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verkaufskühlmöbel der eingangs beschriebenen Art zu entwickeln, das in energiesparender Weise betrieben werden kann und das eine übersichtliche Präsentation, insbesondere der tiefgekühlten Waren gestattet.The invention is therefore based on the object of developing a refrigerated display cabinet of the type described at the outset which can be operated in an energy-saving manner and which allows a clear presentation, in particular of the frozen goods.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das KUhlabteil durch eine Truhe und das Tiefkühlabteil durch einen schrankförmigen, auf der Truhe angeordneten Aufsatz gebildet ist.This object is achieved in that the refrigerator compartment is formed by a chest and the freezer compartment by a cupboard-shaped attachment arranged on the chest.

Im Gegensatz zu den bisher bekannten Tiefkühltruhen wird erfindungsgemäß eine Kühltruhe geschaffen, d.h. ein Kühlmöbel, das bei Temperaturen im Bereich O°C und darüber arbeitet. In der Kühltruhe werden beispielsweise Molkereiprodukte oder Fleisch- und Wurstwaren angeboten. Der erfindungsgemäß auf der Tiefkühltruhe angeordnete Tiefkühlschrank ist beispielsweise mit Glastüren verschlossen, um ein Eindringen von Warmluft zu verhindern. Im Aufsatz werden Tiefkühlwaren übersichtlich und verkaufsfördernd plaziert.In contrast to the previously known freezers, a freezer is created according to the invention, i.e. a refrigerator that works at temperatures in the range of 0 ° C and above. In the freezer, for example, dairy products or meat and sausage products are offered. The freezer arranged according to the invention on the freezer is closed, for example, with glass doors to prevent warm air from entering. Frozen goods are placed clearly and in a sales-promoting manner in the attachment.

Aus der erfindungsgemäßen Anordnung von Kühltruhe und Tiefkühlaüfsatz ergibt sich noch ein ganz wesentlicher Vorteil : Kalte Luft aus dem Tiefkühlaufsatz, die durch unvermeidliche Leckstellen, sowie beim öffnen der Glastüren austritt, fällt in die darunter befindliche Kühltruhe. Die Energie, die aufgebracht werden muß, um die Temperatur in der Kühltruhe aufrecht zu erhalten, ist daher sehr gering.The arrangement of the freezer and freezer unit according to the invention also has a very significant advantage: cold air from the freezer unit, which escapes through inevitable leaks and when the glass doors are opened, falls into the freezer located underneath. The energy that must be applied to maintain the temperature in the freezer is therefore very low.

Bei einer bevorzugten Ausführungsform des Erfindungsgegenstandes weisen Truhe und Aufsatz getrennte Verdampfer auf, die parallel an einen einzigen Kälteerzeuger angeschlossen sind. Die Kühlung des Verkaufskühlmöbels erfolgt durch einen Kühlkreislauf, in dem ein Kühlmittel verdichtet, kondensiert, entspannt und verdampft wird. Mit "Kälteerzeuger" ist im wesentlichen ein Kompressor, ein Kondensator und ein Entspannungsventil gemeint.In a preferred embodiment of the subject of the invention, the chest and top have separate evaporators which are connected in parallel to a single refrigeration generator are. The refrigerated display case is cooled by a cooling circuit in which a coolant is compressed, condensed, expanded and evaporated. The term "refrigeration generator" essentially means a compressor, a condenser and an expansion valve.

Im TiefkUhlaufsatz und in der Kühltruhe ist je ein Verdampfer angeordnet. Die Verdampfer sind in Parallelschaltung an den Kälteerzeuger angeschlossen. Die Kälteleistung zur KUhlung des Tiefkühlaufsatzes ist erheblich größer als die für die Kühltruhe benötigte Kälteleistung. Der Kälteerzeuger ist daher für den Tiefkühlaufsatz ausreichend dimensioniert.An evaporator is located in the freezer and in the freezer. The evaporators are connected in parallel to the refrigeration unit. The cooling capacity for cooling the freezer is considerably higher than the cooling capacity required for the freezer. The refrigeration unit is therefore sufficiently dimensioned for the freezer unit.

Die in die Truhe und in den Aufsatz übertragene Kälteleistung ist auf den jeweiligen Kältebedarf abgestimmt. Dies kann beispielsweise durch entsprechende Dimensionierung der Verdampferfläche oder der Strömungsquerschnitte in der Kühlmittelleitung erfolgen. Gemäß einem erfindungsgemäßen Vorschlag ist es jedoch besonders zweckmäßig, wenn in den Druckleitungen zwischen Kälteerzeuger und den Verdampfern je ein über an den zugehörigen Verdampfern angeordnete Temperaturfühler gesteuertes Magnetventil vorgesehen ist.The cooling capacity transferred to the chest and the top is matched to the respective cooling requirement. This can be done, for example, by appropriately dimensioning the evaporator surface or the flow cross sections in the coolant line. According to a proposal according to the invention, however, it is particularly expedient if in the pressure lines between the refrigeration generator and the evaporators there is a solenoid valve controlled via temperature sensors arranged on the associated evaporators.

Sobald die Temperatur eines Verdampfers über einen vorgegebenen Sollwert ansteigt, öffnet das Magnetventil automatisch die zugehörige Druckleitung und Kältemittel strömt in den Verdampfer. Die Magnetventile können auf zweierlei Art geschaltet sein: Entweder beide Ventile arbeiten vollkommen unabhängig voneinander. Diese Schaltung erlaubt eine besonders exakte Dosierung des Kältemittels, hat aber den Nachteil, daß der Kompressor sich sehr oft an- und abschaltet, was den Verschleiß beschleunigt. Eine andere Möglichkeit ist es, das zum Tiefkühlverdampfer gehörende Magnetventil in Abhängigkeit vom Magnetventil vor dem KUhlverdampfer zu steuern, während umgekehrt das Magnetventil vor dem Tiefkühlverdampfer dasjenige vor dem Kühlverdampfer nicht beeinflußt.As soon as the temperature of an evaporator rises above a predefined setpoint, the solenoid valve automatically opens the associated pressure line and refrigerant flows into the evaporator. The solenoid valves can be switched in two ways: Either both valves work completely independently of one another. This circuit allows a particularly precise metering of the refrigerant, but has the disadvantage that the compressor switches on and off very often, which accelerates wear. Another option is to use the solenoid valve belonging to the freezer evaporator, depending on the solenoid valve in front of the cooler Control evaporator, while conversely the solenoid valve upstream of the freezer does not affect that before the cooling evaporator.

Sobald bei dieser Schaltung das Magnetventil die Druckleitung zum Kühlverdampfer öffnet, öffnet auch das Magnetventil vor dem Tiefkühlverdampfer. Da der Kältebedarf des Kühlverdampfers ohnehin sehr gering ist, führt dies zu keiner nennenswerten Unterkühlung des Tiefkühlverdampfers. Jedoch läßt sich hierdurch die Zahl der Ein- und Ausschaltungen des Kompressors deutlich verringern.As soon as the solenoid valve opens the pressure line to the cooling evaporator with this circuit, the solenoid valve in front of the freezer evaporator also opens. Since the cooling evaporator's cooling requirement is very low anyway, this does not result in any significant undercooling of the freezer evaporator. However, this can significantly reduce the number of times the compressor is switched on and off.

Bei einer vorteilhaften Weiterbildung des erfindungsgemäßen Verkaufsmöbels ist die Saugseite des dem Tiefkühlabteil zugeordneten Verdampfers über ein Rückschlagventil mit der Saugseite des dem Kühlabteil zugeordneten Verdampfers und dieser über eine Saugleitung mit dem Kälteerzeuger verbunden. Das Rückschlagventil verhindert ein unerwünschtes Zurückfließen des Kühlmittels in den Tiefkühlverdampfer bei Stillstand des Kompressors. Das Kühlmittel würde sonst in dem Verdampfer zumindest teilweise rückkondensieren.In an advantageous development of the sales furniture according to the invention, the suction side of the evaporator assigned to the freezer compartment is connected via a check valve to the suction side of the evaporator assigned to the cooling compartment and this is connected to the refrigeration generator via a suction line. The check valve prevents the coolant from flowing back into the deep-freeze evaporator when the compressor is at a standstill. Otherwise, the coolant would at least partially recondense in the evaporator.

Es ist zweckmäßig, wenn die Weiterbildung des Erfindungs-, gegenstandes die Verbindung zwischen Kälteerzeuger und den Verdampfern im wesentlichen durch flexible Leitungen hergestellt ist.It is expedient if the further development of the subject matter of the connection between the refrigeration generator and the evaporators is essentially established by flexible lines.

Gemäß einer günstigen Modifikation des Erfindungsgegenstandes sind die Leitungen mit Kupplungen am Kälteerzeuger befestigt. Dadurch läßt sich der Kälteerzeuger sehr rasch, beispielsweise zur Reparatur, vom Kühlmöbel trennen und gegebenenfalls gegen einen neuen austauschen.According to a favorable modification of the subject matter of the invention, the lines are fastened to the cooling generator with couplings. As a result, the refrigeration device can be disconnected from the refrigerator very quickly, for example for repair, and, if necessary, replaced with a new one.

Es hat sich als zweckmäßig erwiesen, wenn der Kälteerzeuger auf dem Aufsatz angeordnet ist. Besonders für kleinere Läden ist ein als komplette Einheit ausgebildetes Verkaufskühlmöbel von Vorteil, da keine Rohrleitungen oder gar Wanddurchbrüche für einen externen, also außerhalb des Möbels angeordneten Kälteerzeuger notwendig sind. Das Verkaufskühlmöbel wird anschlussfertig geliefert und ist nach Herstellung der Verbindungsleitungen betriebsbereit. Der Kälteerzeuger ist oberhalb des Aufsatzes angeordnet, damit einerseits das vorhandene Warenausstellungsvolumen optimal ausgenützt werden kann und um andererseits zu verhindern, daß die aufsteigende Abwärme des Kälteerzeugers in das Verkaufsmöbel dringt.It has proven to be useful if the refrigeration device is arranged on the top. Especially for smaller ones In stores, a refrigerated display cabinet designed as a complete unit is advantageous, since no pipelines or even wall openings are necessary for an external refrigeration generator, that is to say arranged outside the cabinet. The refrigerated display unit is delivered ready for connection and is ready for operation after the connection lines have been manufactured. The refrigeration unit is arranged above the top so that, on the one hand, the available volume of goods can be optimally used and, on the other hand, to prevent the ascending waste heat from the refrigeration unit from entering the sales furniture.

Weitere Einzelheiten der vorliegenden Erfindung werden anhand von schematisch dargestellten Ausführungsbeispielen beschrieben.Further details of the present invention are described using schematically illustrated exemplary embodiments.

Hierbei zeigen:

  • Figur 1 ein erfindungsgemäßes Verkaufskühlmöbel im Querschnitt,
  • Figur 2 ein Schaltschema des KUhlkreislaufs.
Here show:
  • FIG. 1 shows a cross-section of a refrigerated display case according to the invention,
  • Figure 2 is a circuit diagram of the cooling circuit.

Figur 1 zeigt ein erfindungsgemäßes Verkaufskühlmöbel mit einem Kühlabteil in Form einer Truhe 1 und einem darauf angeordneten Tiefkühlaufsatz 2. Das Verkaufskühlmöbel ist als bauliche Einheit mit durchgehenden Seitenwänden ausgeführt. Der Tiefkühlaufsatz 2 ist als Schrank ausgebildet und weist an seiner Vorderseite Türen 3 mit einer Isolierverglasung auf. Die Isolierverglasung verhindert einerseits ein Beschlagen der Scheiben und andererseits ein Eindringen vonwarmer Umgebungsluft in den Schrank. Im Schrank sind mehrere Konsolen 4angeordnet, auf denen tiefgekühlte Ware ausgestellt wird. Die Kühltruhe, die bei Temperaturen von 0°C und darüber betrieben wird, dient beispielsweise zur Aufnahme von Molkereiprodukten oder Fleisch- und Wurstwaren. Durch die erfindungsgemäße Anordnung von Kühltruhe 1 und Tiefkühlaufsatz 2 ist es möglich, auf engstem Raum gekühlte und tiefgekühlte Waren anzubieten. Insbesondere kann die wertvolle Tiefkühlkost, wie beispielsweise Eiskrem, Meeresfrüchte u.ä. gut sichtbar und verkäufswirksam in Augenhöhe des Kunden plaziert werden.FIG. 1 shows an inventive refrigerated cabinet with a refrigerated compartment in the form of a chest 1 and a freezer attachment 2 arranged thereon. The refrigerated cabinet is designed as a structural unit with continuous side walls. The freezer attachment 2 is designed as a cabinet and has doors 3 with insulating glass on its front. The insulating glazing prevents fogging of the panes on the one hand and warm ambient air entering the cabinet on the other. In the cabinet there are several consoles 4 on which frozen goods are displayed. The freezer, which is operated at temperatures of 0 ° C and above, is used, for example, to hold dairy products or meat and sausage products. Due to the arrangement of freezer 1 and Freezer attachment 2 it is possible to offer chilled and frozen goods in a confined space. In particular, the valuable frozen foods, such as ice cream, seafood and the like. be placed clearly visible and effective for sales at eye level of the customer.

Das erfindungsgemäße Verkaufskühlmöbel weist darüber hinaus den Vorteil auf, daß Kaltluft, die durch unvermeidliche Leckstellen sowie beim Öffnen der Türen aus dem Tiefkühlaufsatz zwei austritt, in die darunter befindliche Kühltruhe 1 fällt. Durchdiese zusätzliche Kühlung mit "Abfallkälte" aus dem Tiefkühlaufsatz 2 ist der Energieaufwand, der zur Kühlung der Kühltruhe aufgebracht werden muß, sehr gering.The refrigerated display cabinet according to the invention also has the advantage that cold air, which escapes from the freezer unit as a result of inevitable leaks and when the doors are opened, falls into the freezer 1 located underneath. This additional cooling with "waste cold" from the freezer attachment 2 means that the energy expenditure which has to be applied to cool the freezer is very low.

Auf dem Aufsatz 2 ist ein Kälteerzeuger 6 angeordnet, der im wesentlichen einen Verdichter 7 für ein Kältemittel, einen Verflüssiger 8, eine Sammelflasche 9 für verflüssigtes Kältemittel und ein in der Figur nicht dargestelltes Entspannungsventil enthält. Ein Ventilator zur Kühlung des Verflüssigers ist mit 10 bezeichnet. Der Kälteerzeuger ist von einer Verkleidung 5 umgeben.A refrigeration generator 6 is arranged on the top 2, which essentially contains a compressor 7 for a refrigerant, a condenser 8, a collecting bottle 9 for liquefied refrigerant and an expansion valve (not shown in the figure). A fan for cooling the condenser is designated 10. The cooling generator is surrounded by a panel 5.

Der Kälteerzeuger 6 ist an einer Stelle untergebracht, die ohnehin nicht als Verkaufsfläche nutzbar ist, da sie oberhalb der Reichweite des Kunden liegt. Daneben ergibt sich der weitere Vorteil, daß die nach oben steigende Abwärme des Kälteerzeugers 6 nicht in das VerkaufskUhlmöbel gelangen kann.The cold generator 6 is accommodated at a location which cannot be used as a sales area anyway, since it is above the range of the customer. In addition, there is the further advantage that the rising waste heat from the refrigeration generator 6 cannot get into the refrigerated sales cabinet.

Der Kälteerzeuger 6 ist mit einem Tiefkühlverdampfer 11 im Tiefkühlaufsatz 2 und einem Kühlverdampfer 12 in der Truhe 1 verbunden. Die Verbindungsleitungen sind wegen der besseren Übersichtlichkeit nicht dargestellt. Das Schaltschema kann der Figur 2 entnommen werden.The cold generator 6 is connected to a deep-freeze evaporator 11 in the deep-freeze attachment 2 and a cooling evaporator 12 in the chest 1. The connecting lines are not shown for better clarity. The circuit diagram can be seen in FIG. 2.

Da in der Kühltruhe 1 eine erheblich_höhere Temperatur als im Tiefkühlschrank 2 herrscht, muß entweder die Verdampferfläche des Kühlverdampfers 12 oder die durch diesen Verdampfer geleitete Kühlmittelmenge wesentlich kleiner als die des Tiefkühlverdampfers sein.In the freezer 1 there is a significantly _ higher temperature than the freezer 2, there must either the evaporator surface of the cooling evaporator 12 or passed through this evaporator refrigerant amount to be substantially less than that of the freezer evaporator.

Ventilatoren 13, 14 bewegen die Luft in den Abteilen 1, 2 im Kreislauf, wobei sich die Luft beim Überstreichen der Verdampfer 11, 12 abkühlt, anschließend die zu kühlenden Waren überstreicht und danach erneut auf die Verdampfer 11, 12 trifft.Fans 13, 14 circulate the air in compartments 1, 2, the air cooling when the evaporators 11, 12 are swept over, then sweeping over the goods to be cooled and then again meeting the evaporators 11, 12.

Figur 2 zeigt schematisch die Kälteversorgung des erfindungsgemäßen Verkaufskühlmöbels. Für analoge Bauteile sind dabei dieselben Bezugszeichen verwendet wie in Figur 1.Figure 2 shows schematically the refrigeration of the refrigerated display cabinet according to the invention. The same reference numerals are used for analog components as in FIG. 1.

Vom Kälteerzeuger 6 wird das zumindest teilweise verflüssigte Kältemittel über eine Druckleitung 20 entnommen. Je nach Stellung der Magnetventile 15, 16 sind die zum Tiefkühlverdampfer 11 und KUhlverdampfer 12 führenden Leitungen offen oder gesperrt. Die Stellung der Ventile 15, 16 ist durch Temperaturfühler 17, 18 beeinflußt, die die an den Verdampfern 11 bzw. 12 herrschenden Temperaturen messen.The at least partially liquefied refrigerant is removed from the refrigeration generator 6 via a pressure line 20. Depending on the position of the solenoid valves 15, 16, the lines leading to the freezer evaporator 11 and the cooling evaporator 12 are open or blocked. The position of the valves 15, 16 is influenced by temperature sensors 17, 18 which measure the temperatures prevailing at the evaporators 11 and 12, respectively.

Die Magnetventile 15, 16 können unabhängig voneinander und nur abhängig von der Temperatur des jeweils nachgeschalteten Verdampfers geschaltet sein. Es ist aber auch eine Schaltung möglich, bei der das Magnetventil 16 vor dem Tiefkühlverdampfer 11 auch dann geöffnet wird, wenn das Magnetventil 15 öffnet. Hierbei wird die Zahl der Aus-und Einschaltvorgänge des Verdichtermotors im Kälteerzeuger reduziert. Andererseits ist die zusätzliche Kälte, die beim gleichzeitigen Öffnen des Magnetventils 16 dem Tiefkühlverdampfer 11 zugeführt wird, wegen des verhältnismäßig kleinen Kältebedarfs des Kühlverdampfers 12 so gering, daß es zu keiner nennenswerten Unterkühlung des Verdampfers 11 kommt.The solenoid valves 15, 16 can be switched independently of one another and only as a function of the temperature of the evaporator connected downstream. However, a circuit is also possible in which the solenoid valve 16 in front of the freezer evaporator 11 is also opened when the solenoid valve 15 opens. This reduces the number of times the compressor motor is switched on and off in the refrigeration generator. On the other hand, the additional cold, which is supplied to the freezer evaporator 11 when the solenoid valve 16 is opened at the same time, is so because of the relatively low cooling requirement of the cooling evaporator 12 low that there is no significant undercooling of the evaporator 11.

In der Saugleitung 21 für das Kältemittel ist zwischen Tiefkühlverdampfer 11 und Kühlverdampfer 12 ein RUckschlagventil 19 angeordnet. Das Rückschlagventil 19 verhindert bei geschlossenen Magnetventilen 15, 16 und bei abgeschaltetem Verdichtermotor ein Rückkondensieren von Kältemittel im Tiefkühlverdampfer 11.A non-return valve 19 is arranged in the suction line 21 for the refrigerant between the deep-freeze evaporator 11 and the cooling evaporator 12. The check valve 19 prevents the refrigerant in the freezer evaporator 11 from recondensing when the solenoid valves 15, 16 are closed and the compressor motor is switched off.

Die Leitungen 20, 21 sind aus einem flexiblen Material hergestellt und über nicht dargestellte Kupplungen am Kälteerzeuger befestigt.The lines 20, 21 are made of a flexible material and attached to the refrigeration unit via couplings, not shown.

Claims (7)

1. Verkaufsmöbel mit einem Kühlabteil und einem Tiefkühlabteil, dadurch gekennzeichnet, daß das Kühlabteil durch eine Truhe (1) und das Tiefkühlabteil durch einen schrankförmigen auf der Truhe (1) angeordneten Aufsatz (2) gebildet ist.1. Sales furniture with a refrigerated compartment and a deep-freeze compartment, characterized in that the refrigerated compartment is formed by a chest (1) and the deep-freeze compartment by a cupboard-shaped attachment (2) arranged on the chest (1). 2. Verkaufskühlmöbel nach Anspruch 1, dadurch gekennzeichnet, daß Truhe (1) und Aufsatz (2) getrennte Verdampfer (11,12) aufweisen, die parallel an einen einzigen Kälteerzeuger (6) angeschlossen sind.2. Refrigerated sales cabinet according to claim 1, characterized in that the chest (1) and attachment (2) have separate evaporators (11, 12) which are connected in parallel to a single refrigeration generator (6). 3. Verkaufskühlmöbel nach Anspruch 2, dadurch gekennzeichnet, daß in den Saugleitungen zwischen Kälteerzeuger (6) und den Verdampfern (11,12) je ein über an den zugehörigen Verdampfern (11,12) angeordnete Temperaturfühler (17,18) gesteuertes Magnetventil (15,16) vorgesehen ist.3. Refrigerated sales cabinet according to claim 2, characterized in that in the suction lines between the refrigeration generator (6) and the evaporators (11, 12), one via the associated evaporators (11, 12) temperature sensors (17, 18) controlled solenoid valve (15 , 16) is provided. 4. Verkaufskühlmöbel nach'einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Saugseite des dem Tiefkühlabteil zugeordneten Verdampfers (11) über ein Rückschlagventil (19) mit der Saugseite des dem Kühlabteil zugeordneten Verdampfers (12) und dieser über eine Saugleitung (21) mit dem Kälteerzeuger (6) verbunden ist.4. Refrigerated sales cabinet according to one of claims 1 to 3, characterized in that the suction side of the evaporator assigned to the deep-freeze compartment (11) via a check valve (19) with the suction side of the evaporator (12) assigned to the cooling compartment and this via a suction line (21 ) is connected to the refrigeration generator (6). 5. VerkaufskUhlmöbel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Verbindung zwischen Kälteerzeuger (6) und den Verdampfern (11,12) im wesentlichen durch flexible Leitungen (20,21) hergestellt ist.5. Refrigerated sales furniture according to one of claims 1 to 4, characterized in that the connection between the refrigeration generator (6) and the evaporators (11, 12) is made essentially by flexible lines (20, 21). 6. Verkaufskühlmöbel nach Anspruch 5, dadurch gekennzeichnet, daß die Leitungen (20,21) mit Kupplungen am Kälteerzeuger (6) befestigt sind.6. Refrigerated sales cabinet according to claim 5, characterized in that the lines (20, 21) are fastened with couplings on the refrigeration generator (6). 7. Verkaufskühlmöbel nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Kälteerzeuger (6) auf dem Aufsatz (2) angeordnet ist.7. refrigerated display cabinet according to one of claims 1 to 6, characterized in that the cooling generator (6) is arranged on the attachment (2).
EP80106017A 1979-10-19 1980-10-04 Refrigerated vending unit Withdrawn EP0027584A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2942402 1979-10-19
DE19792942402 DE2942402A1 (en) 1979-10-19 1979-10-19 SALES REFRIGERATOR

Publications (2)

Publication Number Publication Date
EP0027584A2 true EP0027584A2 (en) 1981-04-29
EP0027584A3 EP0027584A3 (en) 1981-11-18

Family

ID=6083927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106017A Withdrawn EP0027584A3 (en) 1979-10-19 1980-10-04 Refrigerated vending unit

Country Status (3)

Country Link
EP (1) EP0027584A3 (en)
CH (1) CH642527A5 (en)
DE (1) DE2942402A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4000713A1 (en) * 1990-01-12 1991-07-18 Linde Ag SALES REFRIGERATOR
WO2008116475A1 (en) * 2007-03-23 2008-10-02 Carrier Corporation Frigorific sales furniture
WO2009061120A2 (en) * 2007-11-05 2009-05-14 Lg Electronics, Inc. Control method of refrigerator

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0715348B2 (en) * 1989-04-18 1995-02-22 三洋電機株式会社 Insulation box
DE4004747A1 (en) * 1990-02-15 1991-08-22 Linde Ag Refrigerated sales cabinet for goods - has three adjacent refrigerators, with top glass covered compartment
DE4243974A1 (en) * 1992-12-23 1994-06-30 Linde Ag Combination of freezer chests for selling goods
DE102010015165A1 (en) * 2010-04-16 2011-10-20 Liebherr-Hausgeräte Ochsenhausen GmbH Cooling and refrigerating device has refrigerant circuit with multiple dampers that are used for cooling different compartments, where coolant is supplied to dampers through compressor, and dampers are charged with coolant

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2333899A (en) * 1934-05-25 1943-11-09 Gen Motors Corp Refrigerating apparatus
US2501459A (en) * 1948-08-16 1950-03-21 Warren Company Inc Frozen foods and dairy products refrigerator
US2798367A (en) * 1952-12-04 1957-07-09 Guyon L C Earle "l" refrigerator assembly
GB1199267A (en) * 1968-05-02 1970-07-22 Zanussi A Spa Industrie Two-temperature, Single-compressor Refrigeration Vapor Cycle Circuit
FR2077310A1 (en) * 1970-01-26 1971-10-22 Linde Ag
US3858405A (en) * 1973-10-26 1975-01-07 Walter R Manzke Removably positioned refrigerated chest for motor vehicles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2126665A5 (en) * 1971-02-09 1972-10-06 Detroit Sem Electromecca

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2333899A (en) * 1934-05-25 1943-11-09 Gen Motors Corp Refrigerating apparatus
US2501459A (en) * 1948-08-16 1950-03-21 Warren Company Inc Frozen foods and dairy products refrigerator
US2798367A (en) * 1952-12-04 1957-07-09 Guyon L C Earle "l" refrigerator assembly
GB1199267A (en) * 1968-05-02 1970-07-22 Zanussi A Spa Industrie Two-temperature, Single-compressor Refrigeration Vapor Cycle Circuit
FR2077310A1 (en) * 1970-01-26 1971-10-22 Linde Ag
US3858405A (en) * 1973-10-26 1975-01-07 Walter R Manzke Removably positioned refrigerated chest for motor vehicles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4000713A1 (en) * 1990-01-12 1991-07-18 Linde Ag SALES REFRIGERATOR
WO2008116475A1 (en) * 2007-03-23 2008-10-02 Carrier Corporation Frigorific sales furniture
EP2139367B1 (en) 2007-03-23 2017-09-13 Carrier Corporation Frigorific sales furniture
WO2009061120A2 (en) * 2007-11-05 2009-05-14 Lg Electronics, Inc. Control method of refrigerator
WO2009061120A3 (en) * 2007-11-05 2010-07-15 Lg Electronics, Inc. Control method of refrigerator

Also Published As

Publication number Publication date
DE2942402A1 (en) 1981-04-23
EP0027584A3 (en) 1981-11-18
CH642527A5 (en) 1984-04-30

Similar Documents

Publication Publication Date Title
DE602004003733T2 (en) fridge
DE2022797A1 (en) Cooling device with cooling air duct
DE3200468A1 (en) &#34;SHAFT OR CHEST-SHAPED, REFRIGERATED CONTAINER WITH DEFROST AIR INLET AND WITH A COLLECTING AIRBAND FOR DEFROSTING&#34;
EP0027584A2 (en) Refrigerated vending unit
DE60120202T2 (en) SHOWER FURNITURE WITH IMPROVED LIGHTING
DE102010002171A1 (en) Refrigerating appliance with several storage compartments
DE102005037850A1 (en) Fridge and / or freezer
EP0602379B1 (en) Refrigerator, especially multi-temperature refrigerator
DE4319237A1 (en) (Deep) refrigerated cabinet
DE19635265C2 (en) Refrigerated and / or deep-freeze furniture with integrated refrigerant system
EP0889294A1 (en) Method for performing evaporator defrosts in refrigerating cabinets and refrigerating cabinet for carrying out the method
DE4407382A1 (en) Refrigerating device
DE3111877A1 (en) &#34;REFRIGERATED VEHICLE WITH TWO CHAMBERS&#34;
DE2208308C2 (en) Open refrigeration cabinet
DE4301148C2 (en) Freezer island
DE202007006987U1 (en) Fridge and / or freezer
DE60303615T2 (en) COOLER
DE1743237U (en) FREEZER.
DE4432439A1 (en) Refrigerator with two compartments in cooling space
DE102019111269A1 (en) Device for cooling food, additional cooling device and refrigerator
DE613453C (en) Refrigerator or heating cabinet
DE3807646A1 (en) Refrigerating furniture
DE3704245A1 (en) Refrigerated cabinet
DE1836628U (en) HOUSEHOLD REFRIGERATOR WITH FREEZER COMPARTMENT.
DE29808428U1 (en) Product presentation furniture

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19821026

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HAENI, EUGEN