EP3385649A1 - Appareil de refroidissement comprenant au moins deux compartiments de refroidissement - Google Patents

Appareil de refroidissement comprenant au moins deux compartiments de refroidissement Download PDF

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Publication number
EP3385649A1
EP3385649A1 EP18162691.2A EP18162691A EP3385649A1 EP 3385649 A1 EP3385649 A1 EP 3385649A1 EP 18162691 A EP18162691 A EP 18162691A EP 3385649 A1 EP3385649 A1 EP 3385649A1
Authority
EP
European Patent Office
Prior art keywords
cooling
wall
cooling apparatus
deflecting
region
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18162691.2A
Other languages
German (de)
English (en)
Inventor
Andrej LJUBENKO
Drago Razinger
Niko Lesnjak
Matej KEBRI
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.)
Gorenje gospodinjski aparati dd
Original Assignee
Gorenje gospodinjski aparati dd
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 Gorenje gospodinjski aparati dd filed Critical Gorenje gospodinjski aparati dd
Publication of EP3385649A1 publication Critical patent/EP3385649A1/fr
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the present invention refers to a household apparatus, particularly to a cooling apparatus comprising a cooling space with at least an upper compartment, an least a lower compartment, and with a compartment for preparing cooling air, wherein said cooling space can be closed by at least one door, and at least one circulating means to force air circulation in said cooling space.
  • a cooling apparatus may comprise two or more cooling compartments cooled by at least one heat exchanger.
  • the heat exchanger(s) can not be switched-on separately in order to affect the cooling power in each cooling compartment.
  • the cooling power my, however, be affected by changing the operating time of a compressor or the frequency of a compressor, by operating a circulating means to force cooling air circulation and by the rotational frequency thereof.
  • said cooling compartments arranged above each other can be separated by a cell, a partition wall, a shelf or similar.
  • cooling compartments are intended to store food products at different temperatures, wherein a higher temperature is provided in the upper compartment comparing to the temperature in the lower compartment, for example.
  • the cooling air preparation region can be a separate space with a cold heat exchanger connected with the upper and the lower cooling compartment via entering and exiting apertures. Air flow through the cooling air preparation region is ensured by a natural convection and/or by using said circulating means that can be switched on and/or off depending on the current cooling demand.
  • a temperature gradient is built in the height of the apparatus.
  • the temperature at the bottom is lower that the temperature at the top of the apparatus.
  • Said temperature gradient is larger when said circulating means is inactive, and is smaller when said circulating means is active. Operation of said circulating means accelerates the air circulation, hence, enabling temperature homogenization in the cooling apparatus.
  • It is the object of the present invention to create a cooling apparatus comprising at least two cooling compartments, which provides for uncomplicated affecting the proportion of splitting a cooling power between a lower cooling compartment and an upper cooling compartment, and provides lower temperature gradient in height of the upper cooling compartment.
  • a cooling apparatus comprises side walls 1, 2, a back wall 3, a top wall 4 and a bottom wall 5 building a cooling space and, respectively, a receptacle to receive goods to be stored. Said receptacle can be closed by a door not shown in the drawings.
  • an evaporator inside said back wall is arranged inside said back wall. Spaced from the back wall 3 and in direction towards the interior of said receptacle is arranged at least one deflecting wall 6 extending at least partially in the height of the receptacle. In this manner, at least one channel 7, 7' is formed between the back wall 3 and the deflecting wall 6 for circulating air in the cooling apparatus.
  • Said air circulation in the cooling apparatus is provided either by a natural air flow or forced by a circulating means 8' arranged either in the deflecting wall 6 or at any other suitable place in said receptacle of the cooling apparatus.
  • Said circulating means 8' is selected as a blower, for instance.
  • the cooling apparatus further comprises at least one partition wall 10 extending approximately horizontally, by means of which said receptacle of the cooling apparatus is divided to a first cooling region 11 and a second cooling region 11'.
  • said first cooling region 11 having a higher temperature regime is provided in the upper section of the cooling apparatus
  • said second cooling region 11' having a lower temperature regime is provided in the lower section of the cooling apparatus.
  • Said deflecting wall 6 is formed as a flat structure the height thereof preferably equals the width of said receptacle.
  • the height of said deflecting wall 6 can be approximately equal to or smaller than the height of said receptacle.
  • a cut-out 8 for accommodating the circulating means 8' is provided in the region of either the upper end and/or the lower end of the deflecting wall 6, and in the region of the lower end or the upper end of the deflecting wall 6 there is provided at least one aperture and, respectively, a slot 9 for entering and, respectively, exiting the circulation air.
  • the circulating means 8' provided in the region of either the upper end and/or the lower end of the deflecting wall 6, whereas the entrance and, respectively, the exit for the circulation air is enabled through at least one aperture and, respectively, a slot 9' which is provided in the region below said partition wall 10, and hence in said second cooling region 11', between at least one end of the deflecting wall 6 and said top wall 4 and/or said bottom wall 5 and, respectively, said partition wall 10.
  • the deflecting wall 6 is formed as a vertically aligned flat structure that is essentially smooth at its side facing said receptacle, whereas it is formed at the side facing the back wall 3 with at least one rib 12 extending approximately in vertical direction of said receptacle. Said rib 12 extends from the area of the edge of the deflecting wall 6 being close to the top wall 4 over at least part of the deflecting wall 6 in the direction towards the opposite edge thereof.
  • the deflecting wall 6 comprises at its side facing the back wall 3 two ribs 12 which extends approximately in vertical direction transversally spaced form each vertical edge region of the deflecting wall 6.
  • one of said channels 7, 7' comprises a substantially larger cross-section for flowing cool air than the rest of the channels.
  • the channel 7 arranged approximately in the central region of the back wall 3 and respectively, the evaporator placed therein, is selected as a region having larger cross-section where the cool air is prepared.
  • Said evaporator preferably extends only inside said wide channel 7.
  • the channels 7, 7' are created by the ribs 12, wherein the ribs 12 does not extend over the entire length of the deflecting wall 6 but over the part of its length only. In this manner, said fluid communication is created between the wide channel 7 and the channel 7' having smaller cross-section.
  • Said circulating means 8' is arranged in the cut-out 8 provided in the region of the top wall 4.
  • the circulating means 8' draws a relatively warm air A from the upper region 11 and forces it into said wide channel 7 where if cools down at said evaporator.
  • the air stream B cooled in said manner travels downwards the wide channel 7 and splitting into two parts.
  • a first part C of the cooled air stream is redirected via the channel 7' having smaller cross-section along the deflecting wall 6 upwards and through said aperture and, respectively, the slot 9 back into the upper cooling region 11.
  • a second part D of the cooled air stream travels along the deflecting wall 6 and further over said partition wall 10 downwards through the aperture and, respectively, the slot 9' into the lower cooling region 11'.
  • Said second part D of the air stream warms up when passing goods stored in the lower cooling region 11', and returns along the bottom wall 5 and the door of the cooling apparatus as a relatively warm air stream A into the upper cooling region 11.
  • the lower cooling region 11' has always lower temperature than the upper cooling region 11.
  • the temperature difference between the upper cooling region 11 and the lower cooling region 11' typically amounts to approximately 1 °C to 3 °C.
  • the first mode is represented by the above described example with the active circulating means 8', whereas the second mode is represented by the inactive circulating means 8'.
  • movement of the air stream is provided by means of the natural draught (stack effect) and gravitation.
  • the air stream velocity is substantially lower compared to the first mode.
  • the majority of the cooled air travels through the aperture and, respectively, the slot 9' into the lower cooling region 11', whereas the minority of the cooled air returns via the channel 7' into the upper cooling region 11.
  • the air warms up when passing goods and returns along the door of the cooling apparatus as a relatively warm air into the upper cooling region 11.
  • the temperature difference between the upper cooling region 11 and the lower cooling region 11' typically amounts to 5 °C to 8 °C.
  • the circulating means 8' is arranged in the slot 8 formed in the deflecting wall 6 in the area of the partition wall 10. Two modes of operation are possible, the first providing the circulating means 8' to be active, whereas the second mode provides the circulating means 8' to be inactive.
  • said cut-out 8 is formed in one of the ribs 12, thus, creating said fluid communication between said wide channel 7 having large cross-section and one of the channels 7' having small cross-section.
  • the active circulating means 8' draws a relatively warm air E from the upper region 11 through said wide channel 7, wherein it cools down at said evaporator.
  • the air stream F cooled down in said manner travels via the wide channel 7 downwards, and splits into two parts.
  • the first part G of the cooled air stream is drawn by the circulating means 8' from the wide channel 7 and is redirected via the channel 7' having a small cross-section along the deflecting wall 6 upwards and through said aperture and, respectively, the slot 9 back into the upper cooling region 11.
  • the second part H of the cooled air stream travels due to inertia along the deflecting wall 6 and over said partition wall 10 further downwards through the aperture and, respectively, the slot 9' into the lower cooling region 11'.
  • Said second part H of the air stream warms up when passing the goods stored in the lower cooling region 11' and returns along the bottom wall 5 and the door of the cooling apparatus as a relatively warm air stream E into the upper cooling region 11.
  • the lower cooling region 11' is warmer to some extent that the upper cooling region 11.
  • the temperature difference between the upper cooling region 11 and the lower cooling region 11' typically amounts to approximately 1 °C to 3 °C.
  • the circulating means 8' is inactive.
  • the air stream over the cooling apparatus is forced by means of the natural draught and gravitation.
  • the essential difference between the two modes of operation lies in the velocity of the air streams with the second mode of operation being substantially lower than the velocity with the first mode of operation.
  • the lower cooling region 11' is cooler to some extent than the upper cooling region 11.
  • the temperature difference between the upper cooling region 11 and the lower cooling region 11' typically amounts to approximately 5 °C to 8 °C.

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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)
EP18162691.2A 2017-04-03 2018-03-20 Appareil de refroidissement comprenant au moins deux compartiments de refroidissement Withdrawn EP3385649A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SI201700098A SI25412A (sl) 2017-04-03 2017-04-03 Hladilni aparat z vsaj dvema hladilnima predeloma

Publications (1)

Publication Number Publication Date
EP3385649A1 true EP3385649A1 (fr) 2018-10-10

Family

ID=61800297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18162691.2A Withdrawn EP3385649A1 (fr) 2017-04-03 2018-03-20 Appareil de refroidissement comprenant au moins deux compartiments de refroidissement

Country Status (2)

Country Link
EP (1) EP3385649A1 (fr)
SI (1) SI25412A (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0793066A2 (fr) 1996-03-01 1997-09-03 Liebherr-Hausgeräte Gmbh Réfrigérateur avec compartiments de refroidissement à des températures différentes
US5722252A (en) * 1995-10-13 1998-03-03 Lg Electronics, Inc. Cooling air distribution apparatus for refrigerator
JPH1096577A (ja) * 1996-09-25 1998-04-14 Matsushita Refrig Co Ltd 冷蔵庫
WO2001055655A1 (fr) 2000-01-25 2001-08-02 Liebherr-Hausgeräte GmbH Refrigerateur comportant un compartiment refrigere, un compartiment d'entreposage frigorifique et un compartiment de congelation
EP1605215A2 (fr) 2004-06-04 2005-12-14 GORENJE gospodinjski aparati, d.d. Appareil frigorifique
US20100275639A1 (en) * 2009-02-25 2010-11-04 Liebherr-Hausgerate Ochsenhausen Gmbh Refrigerator unit and/or freezer unit
WO2014006281A1 (fr) * 2012-07-06 2014-01-09 Coldway Container à régulation autonome de la température

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5722252A (en) * 1995-10-13 1998-03-03 Lg Electronics, Inc. Cooling air distribution apparatus for refrigerator
EP0793066A2 (fr) 1996-03-01 1997-09-03 Liebherr-Hausgeräte Gmbh Réfrigérateur avec compartiments de refroidissement à des températures différentes
JPH1096577A (ja) * 1996-09-25 1998-04-14 Matsushita Refrig Co Ltd 冷蔵庫
WO2001055655A1 (fr) 2000-01-25 2001-08-02 Liebherr-Hausgeräte GmbH Refrigerateur comportant un compartiment refrigere, un compartiment d'entreposage frigorifique et un compartiment de congelation
EP1605215A2 (fr) 2004-06-04 2005-12-14 GORENJE gospodinjski aparati, d.d. Appareil frigorifique
US20100275639A1 (en) * 2009-02-25 2010-11-04 Liebherr-Hausgerate Ochsenhausen Gmbh Refrigerator unit and/or freezer unit
WO2014006281A1 (fr) * 2012-07-06 2014-01-09 Coldway Container à régulation autonome de la température

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Publication number Publication date
SI25412A (sl) 2018-10-30

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