EP0473000B1 - Dispositif de réfrigération - Google Patents

Dispositif de réfrigération Download PDF

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Publication number
EP0473000B1
EP0473000B1 EP91113579A EP91113579A EP0473000B1 EP 0473000 B1 EP0473000 B1 EP 0473000B1 EP 91113579 A EP91113579 A EP 91113579A EP 91113579 A EP91113579 A EP 91113579A EP 0473000 B1 EP0473000 B1 EP 0473000B1
Authority
EP
European Patent Office
Prior art keywords
condenser
shaft
compressor
cooling
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.)
Expired - Lifetime
Application number
EP91113579A
Other languages
German (de)
English (en)
Other versions
EP0473000A1 (fr
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
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 Coca Cola Co filed Critical Coca Cola Co
Publication of EP0473000A1 publication Critical patent/EP0473000A1/fr
Application granted granted Critical
Publication of EP0473000B1 publication Critical patent/EP0473000B1/fr
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 area, a shaft wall forming the rear wall of the device housing and the condenser consisting of a tube arranged in one plane, in particular a serpentine design, and cooling air entering the shaft through the supply air openings, cooling the condenser and through it Exhaust openings emerge from the shaft, as well as through a lower opening into the niche, cools the compressor, flows through the shaft and leaves it through exhaust air openings.
  • Such a device is preferably suitable in vending machines with which carbonated water is mixed with beverage concentrates to form a soft drink. to cool the raw materials for the soft drink to a temperature that the drink should have when it is dispensed from the machine.
  • the device is also suitable for vending machines in which bottles or cans with a finished drink are kept at a predeterminable temperature which is lower than the ambient temperature.
  • a housing for a domestic drinks machine with a cooling unit consisting of evaporator and 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 the increased cooling performance requirements.
  • a cooling arrangement is known from US Pat. No. 2,637,178, wherein inclined condensers are arranged in an appliance niche in the compressor and in a subsequent rear duct; in such a way that the air flow cooling the compressor flows through the condenser.
  • the compressor is also arranged in a device niche and on the rear wall, on the side facing away from the rear wall, there is an open condenser which runs obliquely upwards and backwards.
  • the improvement of the cooling performance is achieved in a simple manner by 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 output by using a fan which would increase the cooling air flow and thus increase the cooling output, but on the other hand would generate undesirable heat.
  • the solution according to the invention also proves to be energy-saving.
  • the cooling webs increase the surface area 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 sheet metal parts which are bent at right angles to one another.
  • the housing has an opening on its underside, which opens a recess 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 sheet metal part is placed on the rear of the housing, which forms the rear wall 41 and has air slots 5, 6 in its lower and upper region. Cooling air enters the housing through the lower air slots 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.
  • 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 sweeps 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.
  • FIG. 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 within 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 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 air slots 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 lamellae 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.
  • the coil is thus 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.
  • 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 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 supply 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 tube parts, each of which are connected at their lower and upper ends by semicircular tube parts.
  • 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.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Rotary Pumps (AREA)

Claims (4)

  1. Dispositif de refroidissement comportant un compresseur (1) disposé dans un circuit de refroidissement, et un condenseur (2), et dans lequel le compresseur (1) est disposé dans un logement (3) ménagé à l'intérieur du carter du dispositif et le condenseur (2) est disposé dans un puits (4) ouvert en direction du logement (3) et qui possède des ouvertures d'arrivée d'air (5) dans sa partie inférieure, située à l'opposé du compresseur (1) par rapport au plan du condenseur, et des ouvertures d'évacuation d'air (6) dans sa partie supérieure, et dans lequel une paroi du puits forme la paroi arrière (41) du carter du dispositif, et le condenseur (2) est constitué par un tube disposé dans un plan, notamment sous la forme d'un serpentin, et dans lequel l'air de refroidissement pénètre par les ouvertures d'arrivée d'air (5) dans le puits (4), refroidit le condenseur (2) et sort du puits (4) par les ouvertures d'évacuation d'air (6) et pénètre également dans le logement (3) par une ouverture inférieure, refroidit le compresseur (1), circule dans le puits (4) et quitte ce dernier par les ouvertures d'évacuation d'air (6), et dans lequel le condenseur (2) est disposé à l'intérieur du puits (4) de manière à s'étendre obliquement vers le haut en direction de la paroi arrière (4) du carter du dispositif, en étant en appui par sa partie supérieure contre cette paroi et en étant distant, au niveau de son côté tourné vers le compresseur, de la paroi voisine du puits, et dans lequel le tube formant le condenseur (2) est constitué par des éléments de tube rectilignes verticaux parallèles entre eux, qui sont reliés, par leurs extrémités inférieures et supérieures, aux éléments de tube de forme semi-circulaire, et dans lequel les éléments de tube rectilignes sont reliés d'une manière thermoconductrice à des barrettes horizontales rectilignes de refroidissement (9) parallèles entre elles.
  2. Dispositif selon la revendication 1, caractérisé en ce que les éléments rectilignes de tube possèdent des barrettes de refroidissement (9) au niveau de leurs faces supérieure et inférieure.
  3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que le tube en forme de serpentin, qui forme le condenseur (2), comporte, dans sa partie supérieure, des éléments tampons (8) qui exercent une pression contre la paroi arrière (41) et sont réalisés en un matériau amortissant les vibrations.
  4. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le plan oblique du serpentin tubulaire constituant le condenseur (2) fait un angle dans la gamme de 70° à 85° par rapport à un plan horizontal passant par la base du serpentin tubulaire.
EP91113579A 1990-08-16 1991-08-13 Dispositif de réfrigération Expired - Lifetime EP0473000B1 (fr)

Applications Claiming Priority (2)

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

Publications (2)

Publication Number Publication Date
EP0473000A1 EP0473000A1 (fr) 1992-03-04
EP0473000B1 true EP0473000B1 (fr) 1995-04-05

Family

ID=6412372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91113579A Expired - Lifetime EP0473000B1 (fr) 1990-08-16 1991-08-13 Dispositif de réfrigération

Country Status (6)

Country Link
US (1) US5228311A (fr)
EP (1) EP0473000B1 (fr)
AT (1) ATE120850T1 (fr)
CA (1) CA2049081C (fr)
DE (1) DE59105093D1 (fr)
GR (1) GR3015707T3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO20005974D0 (no) * 2000-11-24 2000-11-24 Sinvent As Kjöle- eller varmepumpesystem med varmeavgivelse ved endring i temperatur
BR0100723A (pt) * 2001-02-16 2002-11-12 Multibras Eletrodomesticos Sa Condensador para aparelho de refrigeração
KR20030089819A (ko) * 2002-05-20 2003-11-28 엘지전자 주식회사 냉장고 기계실 커버
JP3722109B2 (ja) * 2002-07-05 2005-11-30 ダイキン工業株式会社 空気調和装置の室外ユニット
CA2754768A1 (fr) * 2010-12-08 2012-06-08 Habco Beverage Systems Inc. Appareil de refrigeration avec serpentin d'evaporation tubulaire
DE102012205061A1 (de) 2012-03-29 2013-10-02 BSH Bosch und Siemens Hausgeräte GmbH Kühlkreislauf für ein Kühlgerät
CN103062980B (zh) * 2012-12-31 2016-03-30 合肥华凌股份有限公司 用于冰箱的角铁组件和具有其的冰箱
CN103062985B (zh) * 2013-01-30 2016-02-24 合肥美的电冰箱有限公司 用于冰箱的底板组件和具有其的冰箱
CH718261A1 (de) * 2022-04-01 2022-07-15 V Zug Ag Kühlgerät mit einem über mindestens einem Dämpfungselement angeordneten Verflüssiger

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US2446876A (en) * 1943-05-29 1948-08-10 Admiral Corp Refrigerator cabinet and means for mounting a compressor and condenser therein
US2637178A (en) * 1949-03-17 1953-05-05 Liquid Carbonic Corp Refrigerated storage, dispensing, and display cabinet
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FR1162098A (fr) * 1956-07-09 1958-09-09 Reiert Aluminium Metall Condenseur s'adaptant sur la paroi arrière d'un réfrigérateur à compression
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Also Published As

Publication number Publication date
ATE120850T1 (de) 1995-04-15
GR3015707T3 (en) 1995-07-31
CA2049081C (fr) 1995-03-14
EP0473000A1 (fr) 1992-03-04
CA2049081A1 (fr) 1992-02-17
DE59105093D1 (de) 1995-05-11
US5228311A (en) 1993-07-20

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