EP0473000A1 - Cooling device - Google Patents

Cooling device Download PDF

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Publication number
EP0473000A1
EP0473000A1 EP19910113579 EP91113579A EP0473000A1 EP 0473000 A1 EP0473000 A1 EP 0473000A1 EP 19910113579 EP19910113579 EP 19910113579 EP 91113579 A EP91113579 A EP 91113579A EP 0473000 A1 EP0473000 A1 EP 0473000A1
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EP
European Patent Office
Prior art keywords
condenser
cooling
shaft
compressor
air
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.)
Granted
Application number
EP19910113579
Other languages
German (de)
French (fr)
Other versions
EP0473000B1 (en
Inventor
Klaus Dipl.-Ing. Erdmann (Fh)
Helmut Dipl.-Ing. Konopa (Fh)
Bringfried Peglow
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.)
BOSCH-SIEMENS HAUSGERAETE GMBH
Coca Cola Co
Original Assignee
Coca Cola Co
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Filing date
Publication date
Application filed by Coca Cola Co filed Critical Coca Cola Co
Publication of EP0473000A1 publication Critical patent/EP0473000A1/en
Application granted granted Critical
Publication of EP0473000B1 publication Critical patent/EP0473000B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F25D23/00—General constructional features
    • F25D23/003—General constructional features for cooling refrigerating machinery
    • 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
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2323/00—General constructional features not provided for in other groups of this subclass
    • F25D2323/002—Details for cooling refrigerating machinery
    • F25D2323/0026—Details for cooling refrigerating machinery characterised by the incoming air flow
    • F25D2323/00261—Details for cooling refrigerating machinery characterised by the incoming air flow through the back bottom side
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2323/00—General constructional features not provided for in other groups of this subclass
    • F25D2323/002—Details for cooling refrigerating machinery
    • F25D2323/0027—Details for cooling refrigerating machinery characterised by the out-flowing air
    • F25D2323/00271—Details for cooling refrigerating machinery characterised by the out-flowing air from the back bottom

Definitions

  • the present invention relates to a device for cooling with a compressor arranged in a cooling circuit and a condenser, the compressor being arranged in a niche inside the device housing and the condenser being arranged in a duct which is open to the niche and has air inlet openings in its lower region and has exhaust air openings in its upper region, a shaft wall forming the rear wall of the device housing and the condenser consisting of a tube which is arranged in a plane and is in particular of a serpentine shape, and cooling air enters the shaft through the supply air openings, cools the condenser and through it Exhaust openings from the duct also exit through a lower opening into the niche, cool the compressor, flow through the duct and exit through the exhaust openings.
  • Such a device is preferably suitable in beverage vending machines with which carbonated water is mixed with beverage concentrates to form a soft drink, the starting materials for the soft drink on a Cool the temperature that the drink should have when dispensing from the machine.
  • the device is also suitable for vending machines in which bottles or cans with a ready-made drink are kept at a predetermined temperature that is lower than the ambient temperature.
  • a housing for a domestic drinks machine with a cooling unit consisting of an evaporator and a condenser is already known.
  • the cooling unit and condenser are arranged in a common space within the housing.
  • the condenser which consists of a cooling coil arranged in one plane, stands vertically in the drinks machine housing and is surrounded by vertical walls which form a convection shaft. Air from the surroundings of the vending machine reaches the condenser via supply air openings on the floor of the common room, absorbs heat there and exits the housing via exhaust air openings.
  • the shaft-shaped design of the room in the area of the condenser thus forms a chimney for the cooling air flow.
  • the chimney effect achieved is limited and does not meet increased cooling performance requirements.
  • a device which meets this requirement is characterized in accordance with the invention in that the condenser within the shaft is inclined upwards in the direction of the rear wall of the device housing is arranged.
  • the invention has a number of advantages.
  • the improvement in cooling performance is achieved in a simple manner by means of a fluid mechanically and thermodynamically favorable positioning and assignment of the condenser section and the compressor. This also makes it unnecessary to achieve a relatively high cooling capacity by using a fan which would increase the cooling air flow and thus increase the cooling capacity but would otherwise generate undesirable heat.
  • the solution according to the invention also proves to be energy-saving.
  • the tube forming the condenser consists of straight vertical, mutually parallel tube parts which are connected at their lower and upper ends to semicircular tube parts, and the straight tube parts are thermally conductively connected to straight horizontal, mutually parallel cooling webs.
  • the cooling bars enlarge the surface of the condenser tube and thus improve the cooling capacity of the device.
  • the special arrangement of the condenser tube and cooling webs causes a pronounced swirling of the cooling air flow and thus further contributes to an improved cooling performance of the device.
  • the serpentine tube forming the condenser in its upper region against the rear wall pressing buffer elements made of vibration-damping material.
  • This embodiment of the device according to the invention is characterized in that noises generated by vibrations of the condenser section are largely damped. A fatigue fracture of the tube that occurs when the condenser tube is rigidly supported by compressor vibrations is avoided. This increases the mechanical stability of the connection between the compressor and the condenser section.
  • the housing of the cooling device according to the invention shown in perspective in FIG. 1, preferably consists of flat bleaching parts which are bent at right angles to one another. On its underside, the housing has an opening which opens a niche 3 for a compressor 1.
  • the compressor 1 is mounted on horizontal supports 11. These preferably consist of narrow metal bars, which give the compressor the necessary stable mounting in the housing. At the same time, its narrow design enables the cooling air entering through the lower niche opening to have unhindered access to almost all of it Has bottom of the compressor container.
  • a bleaching part is placed on the back of the housing, which forms the rear wall 41 of the housing and has air slots 5, 6 in its lower and upper region. Cooling air enters the housing through the lower louvers 5. The cooling air impinges on the condenser, the positioning of which is shown diagonally to the rear wall 41 in FIG. 1, schematically by the dash-dot line. After being heated by the condenser, the cooling air leaves the housing through the upper air slots 6. As will be described with reference to FIG.
  • the air flow flowing through the recess opening and the duct 4 which is relatively strongly heated by the compressor 1, promotes the air flow flowing through the lower air slots 5, the duct 4 and the upper air slots 6 and heated by the condenser and thus affects the cooling performance of the device in a positive manner.
  • the sheet metal part on the back of the housing thus forms a convection shaft 4 for the cooling air.
  • the shaft 4 is open to the niche 3 and forms a common space with it.
  • the open niche 3 has at its upper limit a bevel leading to the shaft 4, which leads the air flow from the niche 3 into the shaft 4. Cooling air entering through the lower niche opening passes around the compressor 1, is heated and reaches the shaft 4 via the niche 3. It rises essentially vertically upwards and leaves the housing through the upper air slots 6.
  • the housing of the device stands on feet 12 which are preferably arranged in the corner areas and whose height is dimensioned such that sufficient cooling air can get into the opening of the compressor niche.
  • Figure 2 illustrates the assignment of compressor 1 and condenser 2.
  • the compressor 1 and the condenser 2 are arranged in a cooling circuit, not shown in the figure, which further comprises, in a known manner, an expansion valve and an evaporator arranged in a cooling space.
  • the compressor 1 and the condenser 2 are in a common space inside the device housing. This space is formed by the niche 3 and the adjacent shaft 4.
  • the condenser 2 can in particular consist of a serpentine tube, the shape of which is shown by way of example in FIG. 3.
  • the coil forming the condenser 2 runs in one plane. According to the invention, this plane is arranged obliquely within the shaft 4, in particular obliquely upwards in the direction of the rear wall 41 of the device housing.
  • the air heated by the compressor 1 does not, or only insignificantly, hit the condenser tube coil arranged obliquely in the shaft 4 after it emerges from the recess 3; rather, it arrives - producing a chimney effect - in a direct way to the upper louvers 6 through which it leaves the housing.
  • the inclined plane of the pipe coil can assume various angles with respect to a horizontal plane running through the base point of the condenser section 2, in particular angles of 70 to 85 °.
  • the rear wall 41 of the housing which forms a wall of the shaft 4, has, in addition to the upper air slots 6 from which the heated air exits, further air slots 5 through which cooling air enters the shaft 4 from the outside.
  • Further air slots, in particular supply air fins 51, can be provided on the shaft side walls in the vicinity of the motor-driven compressor 1, which heats up relatively strongly and therefore requires appropriate cooling.
  • the feet 12 at the corners of the device housing are sufficiently high for the required cooling air to reach the opening of the recess 3.
  • cooling webs 9 made of heat-conducting material can be attached to the condenser tube 2, which increase the surface area of the condenser tube and thus accelerate the cooling process.
  • the cooling webs 9 are in particular attached to the top and bottom of the condenser tube.
  • Buffer elements 8 in the upper area of the condenser coil preferably press against the rear wall 41 of the shaft 4 and at the same time against the horizontal shaft cover. So that the coil is elastically supported.
  • the buffer elements 8 are in particular designed as so-called spacer rollers, which concentrically envelop the coil, and consist of vibration-damping material. This design and arrangement in the shaft 4 ensures a mechanically stable, elastic mounting of the condenser coil. Vibrations emanating from the compressor 1 and transmitted to the coil are damped and fatigue fracture of the coil which occurs when the bearing is rigid is avoided.
  • the buffer elements 8 also contribute to noise reduction.
  • cooling air enters the duct 4 through the supply air openings 5, 51 and reaches the condenser 2, which emits thermal energy to the cooling air.
  • the heated air expands and decreases in density. It is replaced by cooler air of higher density.
  • the shaft 4 thus acts as a convection shaft or chimney. The heated air leaves it through the exhaust air openings 6.
  • the inclined arrangement of the condenser tube 2 shown ensures that air, which has already been heated by the condenser, no longer meets the condenser on its way through the duct 4, but rather directly meets the exhaust air openings 6 in the upper region of the duct 4 moves.
  • a vertical arrangement would the condenser coil, the rising cooling air, which is already warming up in the lower area of the coil, also cover the middle and upper areas of the coil and could then only cool it to a small extent.
  • the shaft 4 receives both the air which is relatively strongly heated by the compressor 1 and which emerges from the niche 3 and also the air which cools the condenser 2.
  • the air heated relatively strongly by the compressor 1 generates a negative pressure in the shaft 4 below the condenser tube 2 and thus exerts a suction effect on the air flow entering through the inlet air openings 5, 51, which cools the condenser 2.
  • the air flow cooling the condenser 2 is thus increased and the cooling capacity of the device is improved.
  • FIG. 3 shows a possible embodiment of the condenser coil 2.
  • This consists of straight, parallel vertical pipe sections, each of which are connected at their lower and upper ends by semicircular pipe sections.
  • Cooling webs 9 are attached to the condenser tube 2 in a heat-conducting manner and are preferably arranged horizontally, that is to say perpendicularly to the straight vertical tube parts.
  • the cooling webs 9 contribute in two ways to an improvement in the cooling performance. Firstly, they increase the effective surface area of the condenser tube; on the other hand, the horizontal arrangement of the cooling webs 9 promotes the swirling of the cooling air rising in the shaft.
  • the tube 2 has in its upper region vibration-damping buffer elements 8 which engage in the upper inner edge of the shaft on the rear wall of the housing.

Abstract

To improve the cooling capacity, the compressor (1) is arranged in a niche (3) of the device housing and the liquefier section (2), which is designed as a tube coil, is arranged in a shaft (4) connected to the niche (3). One shaft wall is formed by the rear wall (41) of the housing. The tube coil (2) is arranged inside the shaft (4), which acts as a convection shaft, at an angle upwards in the direction of the rear wall (4) of the device housing. <IMAGE>

Description

Die vorliegende Erfindung bezieht sich auf eine Vorrichtung zur Kühlung mit einem in einem Kühlkreislauf angeordneten Kompressor und einem Verflüssiger, wobei der Kompressor in einer Nische im Inneren des Vorrichtungsgehäuses und der Verflüssiger in einem zu der Nische offenen Schacht angeordnet ist, der in seinem unteren Bereich Zuluftöffnungen und in seinem oberen Bereich Abluftöffnungen aufweist, wobei eine Schachtwand die Rückwand des Vorrichtungsgehäuses bildet und wobei der Verflüssiger aus einem in einer Ebene angeordneten insbesondere schlangenförmig ausgebildeten Rohr besteht, und wobei Kühlluft sowohl durch die Zuluftöffnungen in den Schacht eintritt, den Verflüssiger kühlt und durch die Abluftöffnungen aus dem Schacht austritt alsauch durch eine untere Öffnung in die Nische eintritt, den Kompressor kühlt, durch den Schacht strömt und diesen durch die Abluftöffnungen verläßt.The present invention relates to a device for cooling with a compressor arranged in a cooling circuit and a condenser, the compressor being arranged in a niche inside the device housing and the condenser being arranged in a duct which is open to the niche and has air inlet openings in its lower region and has exhaust air openings in its upper region, a shaft wall forming the rear wall of the device housing and the condenser consisting of a tube which is arranged in a plane and is in particular of a serpentine shape, and cooling air enters the shaft through the supply air openings, cools the condenser and through it Exhaust openings from the duct also exit through a lower opening into the niche, cool the compressor, flow through the duct and exit through the exhaust openings.

Eine derartige Vorrichtung ist bevorzugt geeignet, in Getränkeautomaten, mit denen karbonisiertes Wasser mit Getränkekonzentraten zu einem Erfrischungsgetränk vermischt werden, die Ausgangsstoffe für das Erfrischungsgetränk auf eine Temperatur zu kühlen, die das Getränk bei der Ausgabe aus dem Automaten haben soll. Die Vorrichtung ist ebenso für Getränkeautomaten geeignet, in denen Flaschen oder Dosen mit einem Fertiggetränk auf einer vorgegbaren, gegenüber der Umgebungstemperatur geringeren Temperatur gehalten werden.Such a device is preferably suitable in beverage vending machines with which carbonated water is mixed with beverage concentrates to form a soft drink, the starting materials for the soft drink on a Cool the temperature that the drink should have when dispensing from the machine. The device is also suitable for vending machines in which bottles or cans with a ready-made drink are kept at a predetermined temperature that is lower than the ambient temperature.

Aus dem deutschen Gebrauchsmuster 78 38 836 ist bereits ein Gehäuse für einen Haushalt-Getränkeautomaten mit einem Kühlaggregat aus Verdampfer und Verflüssiger bekannt. Dabei sind Kühlaggregat und Verflüssiger in einem gemeinsamen Raum innerhalb des Gehäuses angeordnet. Der Verflüssiger, der aus einer in einer Ebene angeordneten Kühlschlange besteht, steht vertikal im Getränkeautomatengehäuse und ist von vertikalen Wandungen umgeben, die einen Konvektionsschacht bilden. Luft aus der Umgebung des Getränkeautomaten gelangt über Zuluftöffnungen am Boden des gemeinsamen Raums an den Verflüssiger, nimmt dort Wärme auf und tritt über Abluftöffnungen aus dem Gehäuse. Die schachtförmige Ausgestaltung des Raums im Bereich des Verflüssigers bildet damit einen Kamin für den Kühlluftstrom. Die erzielte Kaminwirkung ist jedoch begrenzt und wird erhöhten Anforderungen an die Kühlleistung nicht gerecht.From the German utility model 78 38 836 a housing for a domestic drinks machine with a cooling unit consisting of an evaporator and a condenser is already known. The cooling unit and condenser are arranged in a common space within the housing. The condenser, which consists of a cooling coil arranged in one plane, stands vertically in the drinks machine housing and is surrounded by vertical walls which form a convection shaft. Air from the surroundings of the vending machine reaches the condenser via supply air openings on the floor of the common room, absorbs heat there and exits the housing via exhaust air openings. The shaft-shaped design of the room in the area of the condenser thus forms a chimney for the cooling air flow. However, the chimney effect achieved is limited and does not meet increased cooling performance requirements.

Im Hinblick auf diesen Sachverhalt ist es Aufgabe der vorliegenden Erfindung, eine Vorrichtung der eingangs genannten Art mit verbesserter Kühlleistung zu schaffen.In view of this, it is the object of the present invention to provide a device of the type mentioned at the outset with improved cooling performance.

Eine Vorrichtung, die diese Anforderung genügt, ist erfindungsgemäß dadurch gekennzeichnet, daß der Verflüssiger innerhalb des Schachts schräg nach oben in Richtung der Rückwand des Vorrichtungsgehäuses angeordnet ist.A device which meets this requirement is characterized in accordance with the invention in that the condenser within the shaft is inclined upwards in the direction of the rear wall of the device housing is arranged.

Die Erfindung weist eine Mehrzahl von Vorteilen auf. Die Verbesserung der Kühlleistung wird in einfacher Weise durch eine stömungsmechanisch und thermodynamisch günstige Positionierung und Zuordnung von Verflüssigerstrecke und Kompressor erzielt. Damit erübrigt sich auch zur Erzielung relativ hoher Kühlleistung die Verwendung eines Ventilators, der den Kühlluftstrom verstärken und damit die Kühlleistung erhöhen andererseits aber unerwünschte Wärme erzeugen würde. Die erfindungsgemäße Lösung erweist sich also auch als energiesparend.The invention has a number of advantages. The improvement in cooling performance is achieved in a simple manner by means of a fluid mechanically and thermodynamically favorable positioning and assignment of the condenser section and the compressor. This also makes it unnecessary to achieve a relatively high cooling capacity by using a fan which would increase the cooling air flow and thus increase the cooling capacity but would otherwise generate undesirable heat. The solution according to the invention also proves to be energy-saving.

Nach einer weiteren vorteilhaften Ausführungsform der Erfindung besteht das den Verflüssiger bildende Rohr aus geraden vertikalen, zueinander parallelen Rohrteilen, die an ihren unteren und oberen Enden mit halbkreisförmigen Rohrteilen verbunden sind, und die geraden Rohrteile sind mit geraden horizontalen, zueinander parallelen Kühlstegen wärmeleitend verbunden. Die Kühlstege vergrößern die Oberfläche des Verflüssigerrohrs und verbessern damit die Kühlleistung der Vorrichtung. Die besondere Anordnung von Verflüssigerrohr und Kühlstegen bewirkt eine ausgeprägte Verwirbelung des Kühlluftstrom und trägt somit weiter zu einer verbesserten Kühlleistung der Vorrichtung bei.According to a further advantageous embodiment of the invention, the tube forming the condenser consists of straight vertical, mutually parallel tube parts which are connected at their lower and upper ends to semicircular tube parts, and the straight tube parts are thermally conductively connected to straight horizontal, mutually parallel cooling webs. The cooling bars enlarge the surface of the condenser tube and thus improve the cooling capacity of the device. The special arrangement of the condenser tube and cooling webs causes a pronounced swirling of the cooling air flow and thus further contributes to an improved cooling performance of the device.

Diese Wirkungen werden noch weiter verstärkt, wenn die geraden Rohrteile sowohl an ihrer Oberseite alsauch an ihrer Unterseite Kühlstege aufweisen.These effects are further enhanced if the straight tube parts have cooling fins on both their top and bottom.

Nach einer weiteren vorteilhaften Ausführungsform der Erfindung weist das den Verflüssiger bildende schlangenförmige Rohr in seinem oberen Bereich gegen die Rückwand drückende Pufferelemente aus schwingungsdämpfendem Material auf.
Diese Ausgestaltung der erfindungsgemäßen Vorrichtung zeichnet sich dadurch aus, daß durch Schwingungen der Verflüssigerstrecke erzeugte Geräusche weitgehend gedämpft werden. Ein bei einer starren Lagerung des Verflüssigerrohrs durch Kompressorvibrationen eintretender Ermüdungsbruch des Rohrs wird vermieden. Damit wird die mechanische Stabilität der Verbindung von Kompressor und Verflüssigerstrecke verstärkt.According to a further advantageous embodiment of the invention has the serpentine tube forming the condenser in its upper region against the rear wall pressing buffer elements made of vibration-damping material.
This embodiment of the device according to the invention is characterized in that noises generated by vibrations of the condenser section are largely damped. A fatigue fracture of the tube that occurs when the condenser tube is rigidly supported by compressor vibrations is avoided. This increases the mechanical stability of the connection between the compressor and the condenser section.

Die Erfindung wird nun anhand der Figuren beschrieben.The invention will now be described with reference to the figures.

Es zeigt

Figur 1
eine perspektivische Seitenanschicht eines Gehäuse der erfindungsgemäßen Vorrichtung;
Figur 2
eine Seitenansicht auf Kompressor und Verflüssiger und
Figur 3
eine Draufsicht auf die als Rohrschlange ausgebildete Verflüssigerstrecke.
It shows
Figure 1
a perspective side view of a housing of the device according to the invention;
Figure 2
a side view of the compressor and condenser and
Figure 3
a plan view of the condenser section designed as a coil.

Das in Figur 1 perspektivisch dargestellte Gehäuse der erfindungsgemäßen Kühlvorrichtung besteht vorzugsweise aus ebenen, rechtwinklig zueinander abgekanteten Bleichteilen. An seiner Unterseite weist das Geäuse eine Öffnung auf, die eine Nische 3 für einen Kompressor 1 freigibt. Der Kompressor 1 ist auf horizontalen Trägern 11 gelagert. Diese bestehen vorzugsweise aus schmalen Metallstegen, die dem Kompressor die erforderliche stabile Halterung im Gehäuse verleihen. Zugleich ermöglicht ihre schmale Ausbildung, daß die durch die untere Nischenöffnung eintretende Kühlluft ungehinderten Zugang zu nahezu der gesamten Unterseite des Kompressorbehälters hat.The housing of the cooling device according to the invention, shown in perspective in FIG. 1, preferably consists of flat bleaching parts which are bent at right angles to one another. On its underside, the housing has an opening which opens a niche 3 for a compressor 1. The compressor 1 is mounted on horizontal supports 11. These preferably consist of narrow metal bars, which give the compressor the necessary stable mounting in the housing. At the same time, its narrow design enables the cooling air entering through the lower niche opening to have unhindered access to almost all of it Has bottom of the compressor container.

An der Rückseite des Gehäuses ist ein Bleichteil aufgesetzt, das die Gehäuserückwand 41 bildet und in seinem unteren und oberen Bereich Luftschlitze 5, 6 aufweist. Durch die unteren Luftschlitze 5 tritt Kühlluft in das Gehäuse ein. Die Kühlluft trifft auf den Verflüssiger, dessen Positionierung schräg zu der Rückwand 41 in Figur 1 schematisch durch die Strich-Punkt-Linie dargestellt ist. Die Kühlluft verläßt nach ihrer Erwärmung durch den Verflüssiger durch die oberen Luftschlitze 6 das Gehäuse. Wie noch anhand von Figur 2 beschrieben wird, fördert der durch die Nischenöffnung und den Schacht 4 fließende, durch den Kompressor 1 relativ stark erwärmte Luftstrom den über die unteren Luftschlitze 5, den Schacht 4 und die oberen Luftschlitze 6 fließenden, durch den Verflüssiger erwärmten Luftstrom und beeinflußt damit die Kühlleistung der Vorrichtung in positiver Weise.A bleaching part is placed on the back of the housing, which forms the rear wall 41 of the housing and has air slots 5, 6 in its lower and upper region. Cooling air enters the housing through the lower louvers 5. The cooling air impinges on the condenser, the positioning of which is shown diagonally to the rear wall 41 in FIG. 1, schematically by the dash-dot line. After being heated by the condenser, the cooling air leaves the housing through the upper air slots 6. As will be described with reference to FIG. 2, the air flow flowing through the recess opening and the duct 4, which is relatively strongly heated by the compressor 1, promotes the air flow flowing through the lower air slots 5, the duct 4 and the upper air slots 6 and heated by the condenser and thus affects the cooling performance of the device in a positive manner.

Das Blechteil an der Rückseite des Gehäuses bildet damit einen Konvektionsschacht 4 für die Kühlluft. Der Schacht 4 ist zu der Nische 3 offen und bildet mit dieser einen gemeinsamen Raum. Die unten offene Nische 3 weist bei der in Figur 1 dargestellten Ausführungsform an ihrer oberen Begrenzung eine zu dem Schacht 4 führende Abschrägung auf, die den Luftstrom aus der Nische 3 in den Schacht 4 führt. Durch die untere Nischenöffnung eintretende Kühlluft umstreicht den Kompressor 1, wird erwärmt und gelangt über die Nische 3 in den Schacht 4. Sie steigt dabei im wesentlichen vertikal nach oben und verläßt durch die oberen Luftschlitze 6 das Gehäuse.The sheet metal part on the back of the housing thus forms a convection shaft 4 for the cooling air. The shaft 4 is open to the niche 3 and forms a common space with it. In the embodiment shown in FIG. 1, the open niche 3 has at its upper limit a bevel leading to the shaft 4, which leads the air flow from the niche 3 into the shaft 4. Cooling air entering through the lower niche opening passes around the compressor 1, is heated and reaches the shaft 4 via the niche 3. It rises essentially vertically upwards and leaves the housing through the upper air slots 6.

Das Gehäuse der Vorrichtung steht auf vorzugsweise in den Eckbereichen angeordneten Füßen 12, deren Höhe so dimensioniert ist, daß ausreichend Kühlluft in die Öffnung der Kompressornische gelangen kann.The housing of the device stands on feet 12 which are preferably arranged in the corner areas and whose height is dimensioned such that sufficient cooling air can get into the opening of the compressor niche.

Figur 2 verdeutlicht die Zuordnung von Kompressor 1 und Verflüssiger 2.
Der Kompressor 1 und der Verflüssiger 2 sind in einem, in der Figur nicht näher dargestellten Kühlkreislauf angeordnet, der in bekannter Weise weiterhin ein Entspannungsventil und ein in einem Kühlraum angeordneten Verdampfer umfaßt.
Der Kompressor 1 und der Verflüssiger 2 befinden sich in einem gemeinsamen Raum innerhalb des Vorrichtungsgehäuses. Dieser Raum wird durch die Nische 3 und den daran anschließenden Schacht 4 gebildet.Figure 2 illustrates the assignment of compressor 1 and condenser 2.
The compressor 1 and the condenser 2 are arranged in a cooling circuit, not shown in the figure, which further comprises, in a known manner, an expansion valve and an evaporator arranged in a cooling space.
The compressor 1 and the condenser 2 are in a common space inside the device housing. This space is formed by the niche 3 and the adjacent shaft 4.

Der Verflüssiger 2 kann insbesondere aus einem schlangenförmig ausgebildeten Rohr bestehen, dessen Form in Figur 3 beispielhaft dargestellt ist. Die den Verflüssiger 2 bildende Rohrschlange verläuft in einer Ebene.
Diese Ebene ist erfindungsgemäß innerhalb des Schachts 4 schräg angeordnet, insbesondere schräg nach oben in Richtung der Rückwand 41 des Vorrichtungsgehäuses. Bei dieser Anordnung trifft die durch den Kompressor 1 erwärmte Luft nach ihrem Austritt aus der Nische 3 nicht oder nur unwesentlich auf die schräg im Schacht 4 angeordnete Verflüssigerrohrschlange; vielmehr gelangt sie - eine Kaminwirkung erzeugend - auf direktem Weg zu den oberen Luftschlitzen 6, durch die sie das Gehäuse verläßt.The condenser 2 can in particular consist of a serpentine tube, the shape of which is shown by way of example in FIG. 3. The coil forming the condenser 2 runs in one plane.
According to the invention, this plane is arranged obliquely within the shaft 4, in particular obliquely upwards in the direction of the rear wall 41 of the device housing. In this arrangement, the air heated by the compressor 1 does not, or only insignificantly, hit the condenser tube coil arranged obliquely in the shaft 4 after it emerges from the recess 3; rather, it arrives - producing a chimney effect - in a direct way to the upper louvers 6 through which it leaves the housing.

Die schräg angeordnete Ebene der Rohrschlange kann je nach den Abmessungen des Schachts 4, der wie beschrieben, als Kamin wirkt, verschiedene Winkel bezüglich einer horizontalen, durch den Fußpunkt der Verflüssigerstrecke 2 verlaufenden Ebene einnehmen, insbesondere Winkel von 70 bis 85°.Depending on the dimensions of the shaft 4, which acts as a chimney as described, the inclined plane of the pipe coil can assume various angles with respect to a horizontal plane running through the base point of the condenser section 2, in particular angles of 70 to 85 °.

Die Rückwand 41 des Gehäuses, die eine Wand des Schachts 4 bildet, weist neben den oberen Luftschlitzen 6, aus denen die erwärmte Luft austritt, weitere Luftschlitze 5 auf, durch die Kühlluft von außen in den Schacht 4 eintritt. An den Schachtseitenwänden können weitere Luftschlitze, insbesondere Zuluftlamellen 51 in der Nähe des motorbetriebenen Kompressors 1 vorgesehen sein, der sich relativ stark erwärmt und somit eine entsprechende Kühlung erfordert.The rear wall 41 of the housing, which forms a wall of the shaft 4, has, in addition to the upper air slots 6 from which the heated air exits, further air slots 5 through which cooling air enters the shaft 4 from the outside. Further air slots, in particular supply air fins 51, can be provided on the shaft side walls in the vicinity of the motor-driven compressor 1, which heats up relatively strongly and therefore requires appropriate cooling.

Der Kompressor 1, der auf den horizontalen Trägern 11 positioniert ist, wird wie bereits anhand von Figur 1 beschrieben über die untere, großflächige Öffnung der Nische 3 belüftet. Die Füße 12 an den Ecken des Vorrichtungsgehäuses sind ausreichend hoch, damit die erforderliche Kühlluft an die Öffnung der Nische 3 gelangt.
Auf dem Verflüssigerrohr 2 können wie in den Figuren 2 und 3 dargestellt Kühlstege 9 aus wärmeleitendem Material angebracht sein, die die Oberfläche des Verflüssigerrohrs vergrößern und damit den Kühlungsprozeß beschleunigen. Die Kühlstege 9 sind insbesondere auf der Ober- und der Unterseite des Verflüssigerrohrs angebracht.The compressor 1, which is positioned on the horizontal supports 11, is ventilated as already described with reference to FIG. 1 via the lower, large-area opening of the recess 3. The feet 12 at the corners of the device housing are sufficiently high for the required cooling air to reach the opening of the recess 3.
As shown in FIGS. 2 and 3, cooling webs 9 made of heat-conducting material can be attached to the condenser tube 2, which increase the surface area of the condenser tube and thus accelerate the cooling process. The cooling webs 9 are in particular attached to the top and bottom of the condenser tube.

Pufferelemente 8 im oberen Bereich der Verflüssigerrohrschlange drücken vorzugsweise gegen die Rückwand 41 des Schachts 4 und zugleich gegen die horizontale Schachtabdeckung. Damit ist die Rohrschlange elastisch gelagert. Die Pufferelemente 8 sind insbesondere als sogenannte Abstandsrollen ausgebildet, die die Rohrschlange konzentrisch umhüllen, und bestehen aus schwingungsdämpfendem Material. Diese Ausgestaltung und Anordnung im Schacht 4 sichert eine mechanisch stabile, elastische Lagerung der Verflüssigerrohrschlange. Vom Kompressor 1 ausgehende und auf die Rohrschlange übertragene Schwingungen werden gedämpft und ein bei einer starren Lagerung eintretender Ermüdungsbruch der Rohrschlange wird vermieden. Die Pufferelemente 8 tragen auch zu einer Geräuschsdämpfung bei.
Wie bereits beschrieben befinden sich im unteren Bereich des Schachts 4 Zuluftöffnungen 5 und gegebenenfalls 51, während der Schacht 4 in seinem oberen Bereich Abluftöffnungen 6 aufweist. Kühlluft tritt durch die Zuluftöffnungen 5, 51 in den Schacht 4 ein und gelangt an den Verflüssiger 2, der Wärmeenergie an die Kühlluft abgibt. Die erwärmte Luft dehnt sich aus und nimmt an Dichte ab. Sie wird durch kühlere Luft höherer Dichte verdrängt. Der Schacht 4 wirkt damit als Konvektionsschacht oder Kamin. Die erwärmte Luft verläßt diesen durch die Abluftöffnungen 6.Buffer elements 8 in the upper area of the condenser coil preferably press against the rear wall 41 of the shaft 4 and at the same time against the horizontal shaft cover. So that the coil is elastically supported. The buffer elements 8 are in particular designed as so-called spacer rollers, which concentrically envelop the coil, and consist of vibration-damping material. This design and arrangement in the shaft 4 ensures a mechanically stable, elastic mounting of the condenser coil. Vibrations emanating from the compressor 1 and transmitted to the coil are damped and fatigue fracture of the coil which occurs when the bearing is rigid is avoided. The buffer elements 8 also contribute to noise reduction.
As already described, there are 4 supply air openings 5 and possibly 51 in the lower region of the duct, while the duct 4 has exhaust air openings 6 in its upper region. Cooling air enters the duct 4 through the supply air openings 5, 51 and reaches the condenser 2, which emits thermal energy to the cooling air. The heated air expands and decreases in density. It is replaced by cooler air of higher density. The shaft 4 thus acts as a convection shaft or chimney. The heated air leaves it through the exhaust air openings 6.

Die dargestellte schräge Anordnung des Verflüssigerrohrs 2, stellt sicher, daß Luft, die bereits durch den Verflüssiger erwärmt worden ist, auf ihrem weiteren Weg durch den Schacht 4 nicht mehr auf den Verflüssiger trifft, sondern sich unmittelbar auf die Abluftöffnungen 6 im oberen Bereich des Schachts 4 zubewegt. Im Gegensatz hierzu würde bei einer vertikalen Anordnung der Verflüssigerrohrschlange die aufsteigende Kühlluft, die sich bereits im unteren Bereich der Rohrschlange erwärmt, auch die mittleren und oberen Bereiche der Rohrschlange umstreichen und könnte diese dann nur in geringem Maße kühlen.
Der Schacht 4 nimmt bei dieser Anordnung sowohl die von dem Kompressor 1 relativ starke erwärmte, aus der Nische 3 austretende Luft auf alsauch die den Verflüssiger 2 kühlende Luft. Die durch den Kompressor 1 relativ stark erwärmte Luft erzeugt im Schacht 4 unterhalb des Verflüssigerrohres 2 einen Unterdruck und übt damit eine Sogwirkung auf den durch die Zuluftöffnungen 5, 51 eintretenden Luftstrom aus, der den Verflüssiger 2 kühlt. Der den Verflüssiger 2 kühlende Luftstrom wird damit verstärkt und die Kühlleistung der Vorrichtung verbessert.The inclined arrangement of the condenser tube 2 shown ensures that air, which has already been heated by the condenser, no longer meets the condenser on its way through the duct 4, but rather directly meets the exhaust air openings 6 in the upper region of the duct 4 moves. In contrast, a vertical arrangement would the condenser coil, the rising cooling air, which is already warming up in the lower area of the coil, also cover the middle and upper areas of the coil and could then only cool it to a small extent.
In this arrangement, the shaft 4 receives both the air which is relatively strongly heated by the compressor 1 and which emerges from the niche 3 and also the air which cools the condenser 2. The air heated relatively strongly by the compressor 1 generates a negative pressure in the shaft 4 below the condenser tube 2 and thus exerts a suction effect on the air flow entering through the inlet air openings 5, 51, which cools the condenser 2. The air flow cooling the condenser 2 is thus increased and the cooling capacity of the device is improved.

Figur 3 zeigt eine mögliche Ausgestaltung der Verflüssigerrohrschlange 2. Diese besteht aus geraden, zueinander parallelen vertikalen Rohrteilen, die jeweils an ihren unteren und oberen Enden durch halbkreisförmige Rohrteile verbunden sind.
Auf dem Verflüssigerrohr 2 sind wärmeleitend Kühlstege 9 angebracht, die bevorzugt horizontal, also senkrecht zu den geraden vertikalen Rohrteilen angeordnet sind. Die Kühlstege 9 tragen in zweifacher Weise zu einer Verbesserung der Kühlleistung bei. Zum einen vergrößern sie die wirksame Oberfläche des Verflüssigerrohrs; zum anderen fördert die horizontale Anordnung der Kühlstege 9 die Verwirbelung der im Schacht aufsteigenden Kühlluft. Ferner weist das Rohr 2 in seinem oberen Bereich schwingungsdämpfende Pufferelemente 8 auf, die in die obere Innenkante des Schachts an der Gehäuserückwand eingreifen.Figure 3 shows a possible embodiment of the condenser coil 2. This consists of straight, parallel vertical pipe sections, each of which are connected at their lower and upper ends by semicircular pipe sections.
Cooling webs 9 are attached to the condenser tube 2 in a heat-conducting manner and are preferably arranged horizontally, that is to say perpendicularly to the straight vertical tube parts. The cooling webs 9 contribute in two ways to an improvement in the cooling performance. Firstly, they increase the effective surface area of the condenser tube; on the other hand, the horizontal arrangement of the cooling webs 9 promotes the swirling of the cooling air rising in the shaft. Furthermore, the tube 2 has in its upper region vibration-damping buffer elements 8 which engage in the upper inner edge of the shaft on the rear wall of the housing.

Claims (5)

Vorrichtung zur Kühlung mit einem in einem Kühlkreislauf angeordneten Kompressor(1) und einem Verflüssiger(2), wobei der Kompressor(1) in einer Nische(3) im Inneren des Vorrichtungsgehäuses und der Verflüssiger(2) in einem zu der Nische(3) offenen Schacht(4) angeordnet ist, der in seinem unteren Bereich Zuluftöffnungen(5) und in seinem oberen Bereich Abluftöffnungen (6) aufweist, wobei eine Schachtwand die Rückwand(41) des Vorrichtungsgehäuses bildet und wobei der Verflüssiger(2) aus einer in einer Ebene angeordneten insbesondere schlangenförmig ausgebildeten Rohr besteht, und wobei Kühlluft sowohl durch die Zuluftöffnungen(5) in den Schacht (4) eintritt, den Verflüssiger(2) kühlt und durch die Abluftöffnungen(6) aus dem Schacht(4) austritt alsauch durch eine untere Öffnung in die Nische (3) eintritt, den Kompressor(1) kühlt, durch den Schacht(4) strömt und diesen durch die Abluftöffnungen(6) verläßt,
dadurch gekennzeichnet,
daß der Verflüssiger (2) innerhalb des Schachts(4) schräg nach oben in Richtung der Rückwand(41) des Vorrichtungsgehäuses angeordnet ist.Device for cooling with a compressor (1) arranged in a cooling circuit and a condenser (2), the compressor (1) in a niche (3) inside the device housing and the condenser (2) in one to the niche (3) Open shaft (4) is arranged, which has supply air openings (5) in its lower region and exhaust air openings (6) in its upper region, a shaft wall forming the rear wall (41) of the device housing and the condenser (2) consisting of one in one There is a level, in particular serpentine, tube, and cooling air enters the duct (4) through the supply air openings (5), cools the condenser (2) and exits the duct (4) through the exhaust air openings (6) and also through a lower one The opening enters the recess (3), cools the compressor (1), flows through the shaft (4) and leaves it through the exhaust air openings (6),
characterized,
that the condenser (2) within the shaft (4) is arranged obliquely upwards in the direction of the rear wall (41) of the device housing. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß das den Verflüssiger(2) bildende Rohr aus geraden vertikalen, zueinander parallelen Rohrteilen besteht, die an ihren unteren und oberen Enden mit halbkreisförmigen Rohrteilen verbunden sind, und daß die geraden Rohrteilen mit geraden horizontalen, zueinander parallelen Kühlstegen(9) wärmeleitend verbunden sind.Device according to claim 1,
characterized,
that the condenser forming the condenser (2) from straight vertical, there are mutually parallel pipe parts which are connected at their lower and upper ends to semicircular pipe parts, and that the straight pipe parts are connected in a heat-conducting manner with straight horizontal cooling webs (9) which are parallel to one another. Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß die geraden Rohrteile an ihrer Ober- und Unterseite Kühlstege(9) aufweisen.Device according to claim 2,
characterized,
that the straight tube parts have cooling webs (9) on their top and bottom. Vorrichtung nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
daß das den Verflüssiger(2) bildende schlangenförmige Rohr in seinem oberen Bereich gegen die Rückwand(41) drückende Pufferelemente(8) aus schwingungsdämpfendem Material aufweist.Device according to one of the preceding claims,
characterized,
that the serpentine tube forming the condenser (2) has in its upper region against the rear wall (41) pressing buffer elements (8) made of vibration-damping material. Vorrichtung nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
daß die schräg angeordnete Ebene der den Verflüssiger(2) bildenden Rohrschlange gegenüber einer horizontalen, durch den Fußpunkt der Rohrschlange verlaufenden Ebene Winkel im Bereich von 70 bis 85° aufweist.Device according to one of the preceding claims,
characterized,
that the obliquely arranged plane of the condenser forming the condenser (2) has an angle in the range of 70 to 85 ° with respect to a horizontal plane running through the base of the conduit.
EP91113579A 1990-08-16 1991-08-13 Cooling device Expired - Lifetime EP0473000B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4025984 1990-08-16
DE4025984 1990-08-16

Publications (2)

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EP0473000A1 true EP0473000A1 (en) 1992-03-04
EP0473000B1 EP0473000B1 (en) 1995-04-05

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ID=6412372

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EP91113579A Expired - Lifetime EP0473000B1 (en) 1990-08-16 1991-08-13 Cooling device

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US (1) US5228311A (en)
EP (1) EP0473000B1 (en)
AT (1) ATE120850T1 (en)
CA (1) CA2049081C (en)
DE (1) DE59105093D1 (en)
GR (1) GR3015707T3 (en)

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CH718261A1 (en) * 2022-04-01 2022-07-15 V Zug Ag Cooling device with a condenser arranged above at least one damping element

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JP3722109B2 (en) * 2002-07-05 2005-11-30 ダイキン工業株式会社 Air conditioner outdoor unit
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CN103062980B (en) * 2012-12-31 2016-03-30 合肥华凌股份有限公司 For refrigerator angle bar assembly and there is its refrigerator
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CH718261A1 (en) * 2022-04-01 2022-07-15 V Zug Ag Cooling device with a condenser arranged above at least one damping element

Also Published As

Publication number Publication date
GR3015707T3 (en) 1995-07-31
CA2049081C (en) 1995-03-14
EP0473000B1 (en) 1995-04-05
CA2049081A1 (en) 1992-02-17
DE59105093D1 (en) 1995-05-11
US5228311A (en) 1993-07-20
ATE120850T1 (en) 1995-04-15

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