EP3172507B1 - Appareil de froid muni d'un réservoir à liquide - Google Patents

Appareil de froid muni d'un réservoir à liquide Download PDF

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Publication number
EP3172507B1
EP3172507B1 EP15739280.4A EP15739280A EP3172507B1 EP 3172507 B1 EP3172507 B1 EP 3172507B1 EP 15739280 A EP15739280 A EP 15739280A EP 3172507 B1 EP3172507 B1 EP 3172507B1
Authority
EP
European Patent Office
Prior art keywords
heat
heat transfer
refrigeration appliance
tank
heat exchanger
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.)
Active
Application number
EP15739280.4A
Other languages
German (de)
English (en)
Other versions
EP3172507A1 (fr
Inventor
Karl-Friedrich Laible
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete 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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP3172507A1 publication Critical patent/EP3172507A1/fr
Application granted granted Critical
Publication of EP3172507B1 publication Critical patent/EP3172507B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F25D11/025—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures using primary and secondary refrigeration 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
    • F25D23/00—General constructional features
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • F25D23/126—Water cooler
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
    • 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
    • F25D23/06—Walls
    • F25D23/065—Details
    • F25D23/068—Arrangements for circulating fluids through the insulating material
    • 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
    • F25D2323/122—General constructional features not provided for in other groups of this subclass the refrigerator is characterised by a water tank for the water/ice dispenser

Definitions

  • the present invention relates to a refrigeration appliance, in particular a domestic refrigeration appliance, with a heat-insulating wall delimiting a cooled storage chamber and a tank embedded in the wall.
  • a refrigeration appliance in particular a domestic refrigeration appliance
  • a heat-insulating wall delimiting a cooled storage chamber and a tank embedded in the wall.
  • Such tanks are widely used to supply a cold water dispenser in household refrigerators.
  • Out DE 10 2006 052 554 A1 is a refrigeration device with integrated into the rear wall of a dispenser water tank known, in which on one side of the tank air-conveying lines are recessed, which communicate via a passage in the insulating material layer of the wall with the storage chamber. These conduits act as a tank cooling heat exchanger which uses the air of the storage chamber as the heat transfer fluid.
  • the low heat capacity of the air requires a fan to provide sufficient air circulation to cool the tank under normal operating conditions.
  • the cross-section of the lines must be large and, due to the tight installation space, the length of the lines is small. The combination of small length and large cross-section means that the air circulates through the heat exchanger even when the fan is not in operation.
  • the US 4,866,949 discloses a refrigerator having an output on a front door for a refrigerated carbonated liquid such as water or drinks.
  • a carbonator is provided, which is cooled by an evaporation unit.
  • the Evaporation unit communicates with a liquefaction unit which is arranged in the freezer compartment.
  • the US 2009/0260371 A1 discloses a refrigeration device with a first and a second refrigeration cycle equip, the second refrigeration cycle 52 is supplied by a coupler 72 of the first refrigeration cycle 30 with thermal energy.
  • the US 3,908,394 B discloses a refrigerator with a valve and a piping system for beverage dispensing.
  • the pipe system contains frozen ice.
  • the valve When the valve is opened, the pipe system expands due to the water pressure and the water flowing past the frozen ice 44 is cooled.
  • the WO 2010/034330 A1 discloses a beverage cooler having a cooling vessel having an inlet and an outlet for conveying drinks to and from the cooling vessel. Through the cooling tank, a cooling pipe is guided to cool the drink in the cooling tank.
  • the DE 10 2005 014 742 A1 discloses a device for cooling drinks with a phase change material containing cold storage equip.
  • the cold storage can be arranged in a wall or within the interior of the shock cooling device. Through the cold storage a pipe is passed for a liquid to be cooled.
  • the US 2,709,343 discloses a refrigerator with an attached to the ice tank evaporator, wherein the evaporator cools the refrigerator and the ice tank.
  • a condenser is arranged in the engine room of the refrigerator.
  • an electric heater is additionally arranged on the tank. Their operation, however, requires additional energy, and since the heat released by the heater ultimately heats the storage chamber, their operation also leads to longer compressor run times. The heater thus significantly affects the energy efficiency of the refrigerator.
  • Object of the present invention is to provide a refrigeration device with a recessed in a heat-insulating wall tank, in which a supercooling of the tank can be avoided without the use of heating.
  • a refrigeration appliance in particular a household refrigeration appliance, with a heat-insulating wall defining a cooled storage chamber, a tank embedded in the wall and a conduit for a heat transfer fluid, part of which is arranged in thermal contact with the tank first heat exchanger forms, a shut-off is provided which is switchable between a circulation of the heat transfer fluid in the line permitting position and a circulation blocking position.
  • a second heat exchanger is arranged on an inner side of the heat-insulating wall.
  • it may, like a coldwall evaporator, be arranged between an inner skin and an insulation material layer of the heat-insulating wall.
  • the heat transfer fluid is a liquid, since it is able to transfer more heat energy than a gas with a small line cross-section and low flow velocity.
  • the heat exchanger therefore occupies significantly less space in a refrigerator than a conventional, working with air as a heat transfer heat exchanger, so that the usable volume of the refrigerator can be increased.
  • the first heat exchanger is preferably arranged on one of the bearing chamber side facing the tank. Thus, it is shielded from ambient heat by the tank itself by incoming ambient heat, and unnecessary heat input into the heat transfer fluid is avoided.
  • the conduit is a closed circuit, of which a second part forms a second heat exchanger arranged in thermal contact with the storage chamber.
  • An adhesion of the second heat exchanger to the inner skin favors the heat exchange with the storage chamber.
  • a pump may be arranged in the closed circuit.
  • Such a pump may suitably also serve as a shut-off member for preventing the circulation.
  • Particularly suitable for this purpose are pumps in which the driven elements completely fill the free cross-section of the circle, such as gear or rotary vane pumps, which blocked in the case of the stoppage of the movable elements of the cross-section of the circle and thereby the circulation is blocked.
  • a controllable valve can serve as a shut-off.
  • a control signal for such a valve and / or for the pump can be provided in particular by a thermostat control.
  • the shut-off member can also be formed by at least a portion of the second heat exchanger, which can be closed by freezing heat transfer fluid. By blocking the heat transfer fluid at too low a temperature, this closable section can also prevent excessive cooling of the tank, which could lead to the freezing of its contents.
  • the expansion of the water during freezing can be used by the shut-off member comprises a water-filled expandable chamber whose volume expansion during freezing at least narrows the cross-section of the conduit.
  • FIG. 1 shown in a schematic section refrigeration device has a heat-insulating body 1 and a door 2, which define an interior.
  • the interior is divided into a storage chamber 3, here a freezer compartment, and an evaporator chamber 4, in which an evaporator and a fan for circulating air between the evaporator chamber 4 and the storage chamber 3 are housed.
  • An icemaker 5 is arranged immediately below the evaporator chamber 4 in the storage chamber 3 in order to be able to be charged directly with cold air from the evaporator chamber 4.
  • a collecting container 6 is mounted, which catches ice pieces 5 produced by the icemaker.
  • a screw conveyor 7 at the bottom of the collecting container 6 serves to convey ice pieces to an outlet 8 at a door near the end of the collecting container. 6
  • a niche 12 in which a user can place a container to discharge ice from the sump 6 without opening the door 2.
  • An upper wall of the niche 12 lies below the outlet 8 of the collecting container 6. Through this wall extends a tubular or funnel-shaped passage, also referred to as an ice chute 9.
  • a movable flap 10 is arranged, which blocks the ice slide 9 airtight in the closed position, so that no hot air from the niche 12 can pass through the ice chute 9 in the storage chamber 3.
  • a water outlet 11 is arranged, via which a container placed in the niche 12 can also be filled with cold water from a tank 13.
  • the tank 13 is in a wall of the niche 12, here a rear wall, taken in and separated from both the niche 12 and the storage chamber 3 by a thermal barrier coating 14 so that the tank 13 in stationary operation, a temperature is set between the Temperature of the storage chamber 3 and the environment is located.
  • the tank 13 is connected via a through the door 2 and walls of the body 1 extending line 15 to a domestic water, not shown.
  • a solenoid valve 16 is opened in the line, so that cold water is displaced from the tank 13 by flowing from the domestic water line forth, relatively warm water. If this water could only transfer its heat to the storage chamber 3 via the thermal barrier coating 14, it would take a very long time before cold water can be tapped again. In order to avoid this, it is necessary to be able to intensify the heat exchange between the tank 13 and the storage chamber 3. If necessary, it must also be possible to stop this heat flow again to prevent freezing of the water in the tank 13.
  • a cold heat exchanger 17 is arranged on an inner side of the door 2 in close thermal contact with the storage chamber 3.
  • the cold heat exchanger 17 may have a line with a flattened, lying surface on the inner skin cross-section; Alternatively or additionally, an adhesive layer in a limited by the outer skin and a rounding of the pipeline gusset the area on which an intense heat exchange is possible to increase.
  • the freezing point of the heat transfer fluid is below the lowest setpoint temperature which can be set for the storage chamber 3, so that freezing of the heat transfer fluid in the cold heat exchanger 17 is precluded.
  • the heat transfer fluid may be, for example, a common antifreeze solution for use in automobile radiators.
  • the other, warm heat exchanger 18 is in contact with the tank 13.
  • the warm heat exchanger 18 is located here on a side facing the storage chamber 3 of the tank 13 to be isolated from the environment by the tank 13 itself and thus to avoid unnecessary heat absorption from the environment.
  • Fig. 2 shows an interior view of the door 2 according to a first embodiment of the invention.
  • the heat exchangers 17, 18 and connecting lines 19, 20 are in Fig. 2 shown in dashed lines, since they are not visible in reality. Rather, the cold heat exchanger 17 is enclosed above the niche 12 between the door inner skin covering the entire inner door surface and the thermal barrier coating 14, and between the warm heat exchanger 18 and the inner skin is in addition a part of the thermal barrier coating 14th
  • the heat exchangers 17, 18 and lines 19, 20 may be integrally formed of a pipe or hose made of metal or plastic, which in the case of Fig. 2 extends in vertically oriented meanders.
  • the two ends of the tube or hose are connected to the inlet and outlet of a pump 21 to form a closed circuit.
  • the pump 21 is shown here in the line 19, but could be placed anywhere in the heat transfer circuit 22, also within one of the heat exchanger 17, 18.
  • the pump 21 is connected to a temperature sensor 23, which is arranged on an upper side of the tank 13.
  • the temperature sensor 23 sets the pump 21 in motion when a high detected temperature or a rise in temperature suggests that fresh water has flowed from the house water line, and switches off the pump 21 as soon as a limit temperature of some degrees above 0 ° C is exceeded ,
  • the design of the pump 21 is chosen so that it blocks the circulation of heat transfer fluid through the heat exchangers 17, 18 in the off state.
  • a gear pump as a pump 21 into consideration.
  • a valve should be provided in the heat transfer circuit 22, which serves as a shut-off when the pump is switched off. Even so, a cooling of the tank 13 via the heat transfer medium 22 can be reliably prevented if the temperature of the water in the tank 13 is close to 0 ° C.
  • the meanders of the heat exchangers 17, 18 are oriented horizontally, the conduit 19 connects directly to the upper ends of the heat exchangers 17, 18, and the conduit 20 connects directly to the lower ends thereof.
  • This asymmetry favors a purely convection-driven circulation of the heat transfer fluid in the circuit 22.
  • a via a temperature sensor on the tank 13 controlled valve 24 acts as a shut-off, which prevents the circulation of the heat transfer fluid at low temperature of the tank 13.
  • the valve 24 is shown in the conduit 19, but could be positioned at any other location in the circuit 22.
  • Fig. 4 shows a section of the door 2, which separates the tank 13 from the storage chamber 3, according to a third embodiment of the invention.
  • the freezing point of the heat transfer fluid is in this embodiment below 0 ° C, but above the temperature of the storage chamber 3, and accordingly the cold heat exchanger 17 is here separated from the storage chamber 3 by a thin layer of thermal insulation material, which prevents freezing of the heat transfer fluid in the heat exchanger 17 ,
  • a heat-conducting body 25 is embedded, with one end to the inner skin 26 of the door, with the other end to the top of the tank 13 rests and has a passage through which the heat transfer circuit 22, here again the line 19, runs.
  • the cross section of the heat conducting body 25 is small in relation to the surface of the tank 13; accordingly, its influence on the temperature of the tank 13 is negligible.
  • the passage forms a bottleneck 27 of the circuit 22.
  • the surfaces of the heat-conducting body 25 delimiting the bottleneck 27 assume a temperature between that of the storage chamber 3 and that of the tank 13.
  • the freezing point of the circulating in the heat transfer medium 22 heat transfer fluid is chosen so that the adjacent to the bottleneck 27 surface of the heat conducting body 25 falls below this temperature when the temperature of the tank 13 is just above 0 ° C.
  • the layer 28 of solidified heat transfer fluid which forms in this case in the bottleneck 27, constricts the bottleneck 27 in addition. This reduces the flow rate of the heat transfer fluid, which further promotes the growth of the layer 28.
  • Fig. 5 shows you one Fig. 4 analog section according to another embodiment of the invention.
  • a heat-conducting body 25 is arranged between the inner skin 26 and the tank 13.
  • the heat conducting body 25 contains here on its side facing the bearing chamber 3 side a water-filled and closed with a movable piston 30 chamber 29.
  • the contents of the chamber 29 freezes and drives the piston 30 into the bottleneck 27 inside , so that the circulation of the heat transfer fluid preferably comes to a complete stop, but at least severely limited, to prevent freezing of the tank 13.

Landscapes

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

Claims (9)

  1. Appareil frigorifique en particulier appareil frigorifique ménager avec une paroi thermo-isolée délimitant un espace de rangement (3) réfrigéré, avec un réservoir (13) encastré dans la paroi et une conduite pour un fluide caloporteur, dont une partie forme un premier échangeur de chaleur (18) disposé en contact thermique avec le réservoir (13) et un élément de sectionnement (21, 24, 27) pouvant passer d'une position permettant la circulation du fluide caloporteur dans la conduite et une position interdisant cette circulation, et la conduite est un circuit caloporteur fermé (22) dont une deuxième partie forme un deuxième échangeur de chaleur (17) disposé en contact thermique avec l'espace de rangement (3), et ce deuxième échangeur de chaleur (17) est disposé sur un côté intérieur de la paroi thermo-isolée, caractérisé en ce que ce deuxième échangeur de chaleur (17) est disposé entre un revêtement intérieur (26) et une couche de matière isolante (14) de la paroi thermo-isolée.
  2. Appareil frigorifique selon la revendication 1, caractérisé en ce que le fluide caloporteur est un liquide.
  3. Appareil frigorifique selon la revendication 1 ou 2, caractérisé en ce que le premier échangeur de chaleur (18) est disposé sur un côté du réservoir (13) tourné vers l'espace de rangement (3).
  4. Appareil frigorifique selon la revendication 1, caractérisé en ce que le deuxième échangeur de chaleur (17) est disposé au-dessus du premier échangeur de chaleur (18).
  5. Appareil frigorifique selon l'une des revendications 1 ou 4, caractérisé en ce que dans le circuit caloporteur fermé (22) se trouve une pompe (21).
  6. Appareil frigorifique selon la revendication 5, caractérisé en ce que la pompe (21) constitue cet élément de sectionnement.
  7. Appareil frigorifique selon l'une des revendications 1 à 6, caractérisé en ce qu'une vanne pouvant être commandée (24) constitue cet élément de sectionnement.
  8. Appareil frigorifique selon l'une des revendications 1, 4, 5 ou 6, caractérisé en ce que le compartiment de rangement (3) peut être refroidi à une température théorique située sous le point de congélation du fluide caloporteur et en ce que l'élément de sectionnement est constitué par au moins une section (27) du circuit caloporteur (22) pouvant être fermée par le fluide caloporteur de congélation.
  9. Appareil frigorifique selon l'une des revendications 1, 4 ou 5, caractérisé en ce que l'élément de sectionnement (27) comprend un espace (29) extensible rempli d'eau.
EP15739280.4A 2014-07-23 2015-07-20 Appareil de froid muni d'un réservoir à liquide Active EP3172507B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014214322.5A DE102014214322A1 (de) 2014-07-23 2014-07-23 Kältegerät mit Flüssigkeitstank
PCT/EP2015/066557 WO2016012402A1 (fr) 2014-07-23 2015-07-20 Appareil de froid muni d'un réservoir à liquide

Publications (2)

Publication Number Publication Date
EP3172507A1 EP3172507A1 (fr) 2017-05-31
EP3172507B1 true EP3172507B1 (fr) 2019-05-22

Family

ID=53682712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15739280.4A Active EP3172507B1 (fr) 2014-07-23 2015-07-20 Appareil de froid muni d'un réservoir à liquide

Country Status (5)

Country Link
US (1) US10126044B2 (fr)
EP (1) EP3172507B1 (fr)
DE (1) DE102014214322A1 (fr)
TR (1) TR201908930T4 (fr)
WO (1) WO2016012402A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180216865A1 (en) * 2017-01-27 2018-08-02 Louis C. Gonsalves Water exchange cooler
ES2949363T3 (es) * 2018-03-08 2023-09-28 Mgi Digital Tech Método de fabricación de dispositivos personalizados de identificación por radiofrecuencia (“RFID”) sin chip

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2709343A (en) 1949-02-04 1955-05-31 Muffly Glenn Defrosting means for refrigeration apparatus
US3908394A (en) * 1974-11-14 1975-09-30 Gen Electric Water-dispensing system
US4866949A (en) * 1988-11-15 1989-09-19 The Coca-Cola Company Carbonated liquid refrigeration system
DE102005014742A1 (de) 2004-09-27 2006-04-06 Aqamore Gmbh Vorrichtung zum Kühlen von Lebensmitteln
DE102005057165A1 (de) * 2005-11-30 2007-05-31 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit Wassertank
DE102005057164A1 (de) * 2005-11-30 2007-05-31 BSH Bosch und Siemens Hausgeräte GmbH Ausgabevorrichtung für fließ- oder schüttfähige Güter
DE102006040377A1 (de) * 2006-08-29 2008-03-06 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit Wassertank
DE102006052445A1 (de) 2006-11-07 2008-05-08 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit Wassertank
US8794026B2 (en) * 2008-04-18 2014-08-05 Whirlpool Corporation Secondary cooling apparatus and method for a refrigerator
WO2010034330A1 (fr) 2008-09-26 2010-04-01 Electrolux Home Products Corporation N.V. Refroidisseur de boisson, réfrigérateur comportant un tel refroidisseur de boisson et procédé de refroidissement de boisson

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
TR201908930T4 (tr) 2019-07-22
DE102014214322A1 (de) 2016-01-28
US20170211873A1 (en) 2017-07-27
US10126044B2 (en) 2018-11-13
WO2016012402A1 (fr) 2016-01-28
EP3172507A1 (fr) 2017-05-31

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