EP2642224B1 - Kühl- und/oder Gefriergerät - Google Patents

Kühl- und/oder Gefriergerät Download PDF

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Publication number
EP2642224B1
EP2642224B1 EP13001368.3A EP13001368A EP2642224B1 EP 2642224 B1 EP2642224 B1 EP 2642224B1 EP 13001368 A EP13001368 A EP 13001368A EP 2642224 B1 EP2642224 B1 EP 2642224B1
Authority
EP
European Patent Office
Prior art keywords
compartment
unit
fan
air
evaporator
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.)
Not-in-force
Application number
EP13001368.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2642224A3 (de
EP2642224A2 (de
Inventor
Eugen Schmid
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.)
Liebherr Hausgeraete Ochsenhausen GmbH
Original Assignee
Liebherr Hausgeraete Ochsenhausen 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 Liebherr Hausgeraete Ochsenhausen GmbH filed Critical Liebherr Hausgeraete Ochsenhausen GmbH
Publication of EP2642224A2 publication Critical patent/EP2642224A2/de
Publication of EP2642224A3 publication Critical patent/EP2642224A3/de
Application granted granted Critical
Publication of EP2642224B1 publication Critical patent/EP2642224B1/de
Not-in-force 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • 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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays

Definitions

  • the present invention relates to a refrigerator and / or freezer with at least a first compartment and at least a second compartment, wherein the second compartment is operated at a lower or the same temperature during operation of the device as / as the first compartment, wherein at least one horizontal Separating plate is provided which separates the first compartment from the second compartment, and wherein at least one evaporator is provided which serves to cool the first and / or the second compartment.
  • Cooling and / or freezers are known from the prior art, which have a cold storage compartment arranged at the bottom and a cooling compartment arranged at the top. Between both compartments there is an insulated horizontal partition plate. Furthermore, located in the rear area of thedekompartimentes a vertical partition plate which separates a cooling air duct to the receiving space for the refrigerated goods out. In this cooling air duct is an evaporator. In the upper part of the cooling air duct is a fan, which conveys air from the cooling compartment into the cooling air duct. The air is cooled in the cooling air duct by means of the evaporator and then enters the cold storage compartment. From this, the air flows into the cooling compartment.
  • the vertical partition plate is insulated with a Styrofoam insert to prevent condensate from forming on the cold side of the vertical partition due to the cold evaporator located behind the vertical partition.
  • the horizontal partition plate is foamed for stability reasons.
  • the present invention is based on the object to further develop a refrigerator and / or freezer of the type mentioned in that the said isolation can be dispensed with. This saves costs and prevents loss of useful content due to isolation.
  • the at least one evaporator is arranged in or on the horizontal partition plate and that at least one fan is provided, which is arranged such that it in at least one operating mode of the device cooled by the evaporator air in the first and / or promotes into the second compartment.
  • the evaporator of the device is thus according to the invention in or on said horizontal partition plate, which separates the first from the second compartment.
  • the evaporator described above with reference to the prior art does not exist behind the vertical separating plate, so that the vertical separating plate does not have to be insulated accordingly.
  • the evaporator present in or on the horizontal separating plate is the only evaporator which serves for cooling the first, in particular the cooling compartment, and the second, in particular the cold storage compartment.
  • the first compartment and / or the second compartment are formed for example by a cold storage compartment and / or by adekompartiment.
  • first and the second compartment are operated at identical temperatures or even at different temperatures.
  • a preferred embodiment of the invention is that the compartment located below the partition plate is operated at a lower temperature than the compartment located above the partition plate.
  • a vertical partition plate this preferably only serves according to the invention to guide the cold air cooled by the evaporator into the compartment or compartments, preferably into the cooling compartment, preferably in its very upper area, and can therefore be made narrower than this is known from the prior art.
  • the cooling air duct therefore, preferably no evaporator is provided.
  • Corresponding designs can also apply to the cold storage compartment or another compartment.
  • the cold storage compartment it is preferably provided, however, that no cooling air duct is arranged, but that the air cooled by the evaporator passes directly into this compartment.
  • the second compartment in particular the cold storage compartment below and the first compartment, in particular the cooling compartment is arranged above said horizontal partition plate.
  • the horizontal partition plate has no or less strong foaming or other thermal insulation than in known devices.
  • At least one cooling air duct is arranged, which is connected through at least one partition plate, preferably at least one vertical partition plate to the receiving space is separated for the refrigerated goods and that this partition plate has no thermal insulation.
  • At least one cooling air duct is arranged, wherein the cooling air duct is formed such that it has at least one inlet, is introduced into the air cooled by the evaporator by means of the fan and at least one outlet, from which the evaporator cooled air enters the compartment, in particular in the cooling compartment.
  • the at least one inlet is located at the level of the horizontal partition plate, and preferably in the rear area thereof.
  • the outlet is arranged in an upper region of the compartment, preferably at the very top in the cooling compartment. Notwithstanding arrangements known from the prior art, in this case the cold air thus flows through the compartment in question, in particular the cooling compartment, from top to bottom.
  • At least one adjustable flap or another throttle element is arranged in the cooling air passage, by means of which the volume flow of cold air flowing through the cooling air passage is changeable or by means of which the cooling air passage can be completely shut off.
  • This throttle element may be, for example, a pivotable flap or a slider or the like.
  • the at least one fan may, in at least one operating mode, convey cold air cooled by the evaporator directly or indirectly, preferably through one or more cooling air ducts into the first and / or second compartment, preferably into the cooling compartment and / or into the cold storage compartment.
  • the fan is arranged such that air conveyed by the fan is directed into both the first compartment, preferably in the cooling compartment and in the second compartment, preferably in the cold storage compartment, wherein it is preferably provided that the fan is adjustable in position, so that the ratio of the volume flow can be changed from the conveyed in the first compartment air to the air supplied to the second compartment.
  • At least one control and / or regulating unit is provided which determines the position of the fan and / or its rotational speed and / or operating state (switched on or off) and / or one or more of said throttle elements in dependence thereon controls or regulates how the refrigeration demand in the first and / or in the second compartment is.
  • the horizontal partition plate has a facing the door of the device front and a facing the rear wall of the inner container or the back. It is preferably provided that the fan is arranged in or on the horizontal partition plate in the region of the rear side of the partition plate.
  • at least one condensation-collecting receptacle which is impermeable to water and permeable to air, is arranged beneath the evaporator arranged on or in the horizontal separating plate, so that air cooled by the evaporator passes through the condensation-collecting container and down into the compartment or cold storage compartment or other compartment can.
  • the air permeability of the condensate collection container prevents horizontal flow along the cold, cooled by the evaporator air at the condensation collection container.
  • the air permeability allows this cold air vertically downwards, preferably to flow or "fall” in the Biofresh storage area or in the cold storage compartment.
  • the cold air flowing downwards due to the higher density causes a preferably vertically upward flow of the air, which is located in the compartment located below the evaporator and which heats and optionally humidifies is. This air can now flow through the air-permeable condensate collection container and then condenses on the evaporator.
  • the condensate collection container thus serves in a preferred embodiment of the invention for an exchange of air in two directions, namely on the one hand to a flow of cold air from the evaporator into the arranged below the evaporator compartment, in particular in the cold storage compartment, and in addition to a flow of heated and / or moist air from below through the condensate collection container through to the evaporator.
  • dew-water collecting container is to be understood generally and has been formed, for example, by a shell, a fabric, a fleece or the like.
  • the condensation collecting container is inclined, preferably to the side or to the rear, i. towards the rear wall of the unit, so that the condensation water runs either laterally or to the rear.
  • At least one fan is provided, which is arranged in such a way that, during operation of the fan, it conveys cooled cold air through the evaporator into the first and / or second compartment, in particular into the cooling compartment and / or into the cold storage compartment.
  • the device has at least one control or regulating unit which controls or regulates the fan, wherein the control or regulating unit is designed such that it switches off the fan to set a static cooling mode and turns on to set a dynamic cooling mode.
  • the device is thus “static” and “dynamic” operable.
  • the fan In the case of static operation, the fan is off. In a dynamic operation, however, the fan is turned on and actively promotes the cooled air from the evaporator in the first and / or second compartment, ie preferably in the cooling compartment and / or in the cold storage compartment.
  • Whether the static or dynamic mode of operation is selected may depend on the refrigeration demand that exists in the compartment or compartments.
  • the at least one control or regulating unit is designed such that it switches on or off depending on the refrigeration demand in the first and / or second compartment, preferably in thedekompartiment and / or in the cold storage compartment fan and / or changed in its speed and / or the volume flow of the air cooled by the evaporator in the first, preferably in thedekompartiment and / or in the second compartment, preferably in the cold storage compartment preferably by adjusting at least one throttle or the like in the cooling air duct or by changing the position of the Fan changes.
  • the control or regulating unit operates or switches off the fan and / or changes its speed and / or position, so that a larger or smaller volume flow is attributable to e.g. Cooling compartment or the cold storage compartment or the first and / or second compartment is supplied. It is also conceivable that a throttle element, such as a flap or the like is closed, opened or changed its position, which influences the supply of air cooled by the evaporator in the one or more compartments.
  • At least one storage medium preferably a sponge, a lava rock or another suitable for receiving water means is provided which is adapted to receive from the condensation water container or running off this water.
  • This storage medium may be placed or placed in the volumetric flow delivered by the fan in such a way that the air through the in the storage medium moistened water is moistened. It is conceivable, the storage medium either in the flow of cold air, which is supplied to the one or more compartments, or to move out of this or partially into it, depending on the extent to which a humidification of the air is required.
  • one or more moisture sensors are provided, for example in the cold storage compartment and / or in the cooling compartment or in the first and / or second compartment and that in a statement that the humidity must be changed, the storage medium such or is further moved into or out of the cold air flow, so that a stronger or less strong humidification of the air takes place.
  • the positioning of the storage medium may thus depend on the need for humidification.
  • the present invention further relates to a method for operating a refrigerator and / or freezer according to any one of claims 1-13, wherein it is provided that, depending on the refrigeration demand in the first compartment, preferably in the cooling compartment and / or the second compartment , Preferably in the cold storage compartment of the fan is switched on or off and / or is changed in its speed and / or the volume flow of the air cooled by the evaporator in the first and / or in the second compartment, preferably by adjusting a throttle valve or the like or is changed by changing the position of the fan.
  • a particularly advantageous embodiment of the invention is that depending on the refrigeration demand in the first compartment and / or in the second compartment, a change in position of the fan is made.
  • the first compartment can be, for example, a refrigeration compartment or also a cold storage compartment. This also applies to the second compartment.
  • the first compartment and the second compartment can basically be occupied or formed by any number of compartments.
  • one conceivable mode of operation of the device according to the invention is preferably that a static cooling mode is set, by turning off the fan when only the compartment below the horizontal divider plate reports a refrigeration demand. Is also or only in the compartment located above the horizontal partition cooling demand, the fan is turned on.
  • a reduction of the horizontal temperature difference in the arranged below the horizontal partition plate compartment is to be expected because it is preferably provided that the condensation collection container extends over the entire bottom or over a large part of the underside of the horizontal partition plate.
  • a reduction of the horizontal temperature difference has a positive effect on the standard energy consumption.
  • the first preferably the cooling compartment in static operation, i. Less cooled than the cold storage compartment or the compartment below the horizontal divider when the fan is off. This makes it possible to adjust the temperature in the second compartment, in particular in the cold storage compartment, more independently of the temperature in the first compartment, in particular in the refrigeration compartment.
  • dynamic cooling mode i.
  • a partial air quantity of the air cooled by the evaporator is conveyed into the first compartment and a partial air quantity into the second compartment.
  • the volume flow increases and the dynamic pressure to be built up is reduced.
  • This is a preferred embodiment of the invention. This is contrary to the operation of the cost-effective axial fans and may have a favorable effect by possible lower speeds in terms of noise.
  • the first compartment preferably the cooling compartment
  • the first compartment is supplied with the air cooled by the evaporator from above.
  • Such an air duct in which the cold air flows through the first compartment or the cooling compartment from top to bottom, reduces the vertical type temperature difference in this compartment.
  • the fan used according to the invention can also be used to make the temperatures in the cold storage compartment comparable. This brings advantages in the determination of the standard energy consumption. Furthermore, the fan can be used to accelerate defrosting. This reduces the cyclical, temporal temperature differences in the region of the cold storage compartment or in the region of the compartment below the horizontal separating plate.
  • the fan bearing can be adjustable, for example, be rotatable or tiltable.
  • the volume flow of cold air can be adjusted, which is supplied to the first and / or the second compartment.
  • a change in the relation of the two compartments supplied amount of cold air can be regulated or adjusted.
  • the condensate can be discharged via a storage medium.
  • This can be arranged in the air flow coming from the evaporator, so that the dry, coming from the evaporator air is humidified and thus a total of a higher relative humidity, for example in the field of cold storage compartment is achieved.
  • horizontal separating plate should not be interpreted so narrowly that only exactly horizontal separating plates are encompassed by the invention. Also inclined to the horizontal partition plates are included in this term.
  • horizontal separator plate means a separator plate separating an upper compartment from a lower compartment.
  • vertical divider panel does not mean that this divider panel needs to be positioned exactly vertically, and an inclination relative to the vertical is also encompassed by the invention.
  • FIG. 1 shows a refrigerator with a body 100 and with a door 200.
  • the body 100 and the door 200 enclose a cooled interior, which is divided by the horizontal partition plate 10 into two sections.
  • Above the horizontal separating plate 10 is the cooling compartment 20, in which an average cold room temperature according to EN ISO 15502 of about +4 ° C to +9 ° C prevails.
  • Below the horizontal partition plate 10 is the cold storage compartment 30, in which a temperature within limit temperatures of -2 ° C to +3 ° C prevails.
  • the horizontal partition plate 10 consists of an upper plate-shaped horizontal tray 12, which forms the bottom of thedekompartiments 20 and an underlying horizontally disposed evaporator 40 and from the condensation collection container 50th
  • the fan 60 In the rear region of the horizontal partition plate 10 is the fan 60, which is operated so that it sucks air from the evaporator 40 and then promotes the cooling compartment 20 and / or in the cold storage compartment 30.
  • FIG. 1 it can be seen further, is located in the rear region of the cooling compartment 20, a vertical partition plate 70 which separates a cooling air duct 80.
  • This cooling air duct has an upper opening 82, through which air flows from the cooling air duct 80 into the cooling compartment 20 at the top.
  • the cooling air duct 80 has a lower inlet opening and a lower inlet area, respectively, through which air is conveyed from the fan 60 into the cooling air channel 80, as indicated by the arrows in FIG FIG. 1 is indicated.
  • an opening is provided between the fan 60 and the cold storage compartment 30, through which air conveyed by the fan 60 passes into the cold storage compartment 30.
  • This introduction of air into the cold storage compartment can take place immediately by the air flowing through an opening in the horizontal partition plate 10 into the cold storage compartment 30.
  • a cooling air duct is also arranged, which has one or more openings through which air flows into the cold storage compartment 30.
  • air is introduced from the fan 60 upwards and downwards, ie, on the one hand into the cooling air duct 80 and on the other hand into the cold storage compartment 30.
  • This air is cooled by the evaporator 40 and conveyed by the fan 60.
  • the air is guided in each case in the rear region of the cooling compartment 20 and the cold storage compartment 30 along or introduced into this compartment.
  • the air then flows through the compartments and, after passing through from top to bottom with respect to the cooling compartment 20 or after the flow from bottom to top of the cold storage compartment 30, returns to the evaporator 40 so that a circulation flow occurs relative to each of the compartments.
  • the cooled air due to its high density, passes from the evaporator 40 into the cold storage compartment 30. It flows through the air-permeable condensation-collecting container 50 FIG. 2 Down falling air causes a vertical upward flow of the cold storage compartment 30 located, comparatively warm and humid air. This flows through the air-permeable condensate collection container 50 and reaches the evaporator 40, where the humidity condenses out.
  • the located in the condensation collection container 50 Dew water can be absorbed by a storage medium, such as by a sponge, or removed in any other suitable manner.
  • the storage medium can be introduced into the cold air flow in such a way that a humidification of this cold air takes place, which is then supplied to the cooling compartment 20 and / or the cold storage compartment 30.

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  • 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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP13001368.3A 2012-03-19 2013-03-18 Kühl- und/oder Gefriergerät Not-in-force EP2642224B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012005490 2012-03-19
DE102012009457A DE102012009457A1 (de) 2012-03-19 2012-05-11 Kühl- und/oder Gefriergerät

Publications (3)

Publication Number Publication Date
EP2642224A2 EP2642224A2 (de) 2013-09-25
EP2642224A3 EP2642224A3 (de) 2015-07-22
EP2642224B1 true EP2642224B1 (de) 2017-06-28

Family

ID=47915404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13001368.3A Not-in-force EP2642224B1 (de) 2012-03-19 2013-03-18 Kühl- und/oder Gefriergerät

Country Status (3)

Country Link
EP (1) EP2642224B1 (es)
DE (1) DE102012009457A1 (es)
ES (1) ES2644348T3 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015007359A1 (de) * 2014-10-29 2016-05-04 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
EP3015799B1 (de) * 2014-10-29 2021-01-06 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder gefriergerät
WO2018033966A1 (ja) * 2016-08-17 2018-02-22 三菱電機株式会社 冷蔵庫

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607201A (en) * 1948-06-28 1952-08-19 Dole Refrigerating Co Blast freezer
US3164970A (en) * 1962-07-23 1965-01-12 Whirlpool Co Defrost control
US3466891A (en) * 1967-09-06 1969-09-16 Amana Refrigeration Inc Combination freezer and refrigerator with fast freezing means
US3455119A (en) * 1968-02-16 1969-07-15 Gen Motors Corp Plural compartment high humidity domestic refrigerator
US3495416A (en) * 1968-09-03 1970-02-17 Gen Electric Control circuit for refrigerator including case heater means
US3866437A (en) * 1973-09-10 1975-02-18 Westinghouse Electric Corp Adjustable damper control mechanism
US4296611A (en) * 1978-12-08 1981-10-27 General Electric Company Household refrigerator air flow control and method
DE3324623A1 (de) * 1982-07-12 1984-01-12 Gold Star Co Kuehlvorrichtung mit einem verschliessbaren kuehlfach
JPH063341B2 (ja) * 1986-06-02 1994-01-12 松下冷機株式会社 冷蔵庫
DE3844259A1 (de) * 1988-12-29 1990-07-05 Liebherr Werk Lienz Gmbh Kuehlschrank
JP2702782B2 (ja) * 1989-06-28 1998-01-26 松下冷機株式会社 冷蔵庫
DE9100015U1 (de) * 1990-12-11 1992-04-09 Jakob, Karl, Dipl.-Ing., 8011 Baldham Wärmetauscher mit Gebläse
NO174484C (no) * 1992-01-15 1994-05-11 Ketil Aas Fremgangsmåte for å hindre uttörking av varer i kjölerom ved hjelp av fuktig luft
DE102005021606A1 (de) * 2005-05-10 2006-11-23 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät
DE102007029180A1 (de) * 2007-06-25 2009-01-08 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät
KR101631904B1 (ko) * 2009-07-15 2016-06-20 엘지전자 주식회사 냉장고
DE102009054029A1 (de) * 2009-11-20 2011-05-26 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

Also Published As

Publication number Publication date
ES2644348T3 (es) 2017-11-28
EP2642224A3 (de) 2015-07-22
EP2642224A2 (de) 2013-09-25
DE102012009457A1 (de) 2013-09-19

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