EP3916321B1 - Récipient de climatisation - Google Patents

Récipient de climatisation Download PDF

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Publication number
EP3916321B1
EP3916321B1 EP21163397.9A EP21163397A EP3916321B1 EP 3916321 B1 EP3916321 B1 EP 3916321B1 EP 21163397 A EP21163397 A EP 21163397A EP 3916321 B1 EP3916321 B1 EP 3916321B1
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EP
European Patent Office
Prior art keywords
air
compartment
fan
climatization
refrigerator
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
EP21163397.9A
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German (de)
English (en)
Other versions
EP3916321A1 (fr
Inventor
Bernardus Jacobus Maria MUSTERS
Johannes Cornelis Nieuwlaat
Johannes Adrianus Stephanus STOOPEN
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.)
Illinois Tool Works Inc
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Illinois Tool Works Inc
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Publication date
Application filed by Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Publication of EP3916321A1 publication Critical patent/EP3916321A1/fr
Application granted granted Critical
Publication of EP3916321B1 publication Critical patent/EP3916321B1/fr
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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
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
    • F25D2317/0662—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply from the corner
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
    • F25D2317/0665—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply from the top
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
    • F25D2317/0681—Details thereof
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
    • F25D2317/0682—Two or more fans

Definitions

  • This invention relates generally to a climatization container, for instance a refrigerator.
  • a climatization container comprises a container suitable for keeping contents stored therein under particular climatic conditions, for instance within a predetermined temperature or humidity range.
  • Climatization containers are commonly used for storing products such as food and beverages. Particular examples include refrigerators and freezers where the primary requirement is to store food and beverages within a predetermined temperature range. Where in the present document reference is made to a particular example of a climatization container, for instance a refrigerator, this should be understood to include all types of climatization containers unless the context requires that it is limited to the particular example.
  • a climatization container may comprise a compartment defined by walls and closable by a door. Within the compartment is a shelf support, or series of shelf supports, supporting one or more shelves. On each shelf products, for instance food and beverage products, may be stored.
  • a climatization container typically requires air to be distributed around a compartment, and for this a fan is provided to draw air in from one part of the compartment and expel air to another part of the compartment.
  • the fan intake and outlet may be spaced apart to encourage air flow around the compartment.
  • a cooling system will also be provided to cool the air, and the fan may be provided upstream or downstream of the cooling system.
  • US-2006/112720-A1 discloses a cooling air guide unit for a walk-in refrigerator including a mounting part comprising a first mounting surface and a second mounting surface and a cooling air blowing part.
  • the first and second mounting surface of the mounting part are tilted with respect to each other by a predetermined angle.
  • WO-2016/082622-A1 discloses a refrigerator, comprising a box body, a storage chamber arranged within the box body, an air passage arranged within the box body and in communication with the storage chamber, and an evaporator and a fan arranged within the air passage, the air passage being provided with an air inlet and an air outlet, a flow-guiding device also being arranged within the air passage, the flow-guiding device being located between the evaporator and the air inlet.
  • US-2016/209098-A1 discloses a supercooling freezer including: a body having a cooling chamber having shelves on which objects to be accommodated are placed and a door for opening or closing the side surface of the cooling chamber; an evaporator disposed at the upper portion of the cooling chamber to cool the air of the cooling chamber; a cooling duct for accommodating the evaporator therein; air circulation fans disposed in front of the evaporator in the cooling duct to supply the air of the cooling chamber to the evaporator; a cool air supply duct connected with the cooling duct to induce the air cooled through the evaporator in the cooling duct to the bottom of the cooling chamber; and extension ducts projecting from the cool air supply duct in a direction in which the door is positioned to supply cool air to the objects above the objects placed on the shelves.
  • WO-2014/198152-A1 disclose an electric refrigerator capable of forming a suitable air curtain to prevent leakage of cooled air from a refrigerator compartment.
  • the electric refrigerator has an airflow direction control unit provided at an air outlet formed at the front part of a circulating air duct located at a side of the top surface of a refrigerator compartment. Insofar that a door of the refrigerator compartment is in an opened state, air blown out from the air outlet via the airflow direction control unit is directed downward to form an air curtain.
  • US2250612A discloses a cooler for bottled beverages having a fan arranged to circulate air through a bottle compartment according to the preamble of claim 1.
  • the fan expels air from a side of the compartment, horizontally towards the bottles and across the compartment. Air is returned from an opposite side of the compartment via a channel formed in the bottom of the compartment.
  • a climatization container comprising: a compartment for storage of products, the compartment being defined by walls and closable by a door; at least one shelf to support the products; and a fan for distribution of air within the climatization container; wherein the fan is positioned proximal to a top wall of the compartment and angled relative to a vertical direction such that air expelled by the fan is directed towards the top wall of the compartment.
  • cooled air may be directed up and over products on an uppermost shelf such that the cool air flow does not immediately strike products proximal to the fan. Accordingly, air may circulate more effectively around the compartment and so cool products throughout the compartment more evenly.
  • FIGS. 1 and 2 these illustrate a refrigerator 1 according to the prior art.
  • the following description refers to refrigerators as examples of climatization containers according to the present invention.
  • the invention is not limited only to refrigerators.
  • the refrigerator 1 in each of figures 1 and 2 comprises a compartment 2 defined by side walls 3, 4, top wall 5, rear wall 6 and bottom wall 7.
  • the compartment 2 is closable at the front by doors 8, in this example a pair of doors.
  • each shelf 9 is supported by shelf supports (not visible, but they may comprise one or more ladder rack on each side wall 3, 4 allowing the vertical position of the shelves within compartment 2 to be adjusted).
  • Products 10, for instance beverage bottles, are position on each shelf 9. Additionally, products 10 are supported directly on the bottom wall 7 of compartment 2 in order to maximise the number of products that can be stored in the compartment 2.
  • Refrigerator 1 further comprises a cooling system in cooling system compartment 11. Details of the cooling system are not shown, except for fan 12 which is located upon side wall 4 of compartment 2 in order to expel cooled air into the compartment 2.
  • the fan 12 cooperates with air duct 13 in order to draw in air from proximal to the bottom wall 7 and expel cooled air proximal to the top wall 5.
  • the cooling system will include an evaporator within the air duct 13 such that air is drawn through the evaporator by the fan 12 and so cooled.
  • Fan 12 is vertically orientated and so generally directs air horizontally into the compartment towards the opposite side wall 3. Dashed arrows 14 indicate the flow of air around the compartment 2. It can be seen that cooled air expelled by fan 12 may directly strike products 10 positioned on an uppermost shelf proximal to the fan 12. Disadvantageously, this may result in uneven cooling in that these products may be cooled more that products further away from the fan 12. In order to ensure that all products are adequately cooled it may be required to install a fan 12 with greater air flow capacity (or operate it at a higher speed) or increase the cooling capacity of the cooling system. It will be appreciated that such a prior art refrigerator 1 suffers from energy inefficiency and uneven product cooling.
  • a further problem with the refrigerator of figures 1 and 2 is that products supported on the bottom wall 7 of the compartment 2 occlude the flow of air returning to duct 13.
  • FIGS 3 to 5 illustrate an example of a refrigerator in accordance with an example of the present invention, which addresses some or all of the above described problems associated with conventional refrigerators.
  • FIGS 3 to 5 illustrate corresponding parts to the refrigerator of figures 1 and 2 , the same reference numerals are used, and the above description is considered to apply equally to figures 3 to 5 . Parts which are unchanged are not described again.
  • the refrigerator 1 of figures 3 to 5 differs in that fan 12 is angled upwards.
  • fan 12 is shown being positioned under an angle 30 relative to the vertical Z direction.
  • Angle 30 may be 30° meaning that air is expelled from fan towards the top wall 5 at an angle of 60° relative to the vertical Z direction.
  • An airflow angle of 60° has been found to give an acceptable distribution of cooling throughout the refrigerator.
  • the precise angle may vary, and air may be expelled at an angle relative to the Z direction within a range of 30° to 90°, preferably 45° to 75°.
  • This serves to direct the air flow (indicated by dashed arrows 14) up and above products 10 upon the uppermost shelf 9. Accordingly, more even product cooling is achieved by not excessively cooling products proximal to the fan 12.
  • Fan 12 may thus be specified and operated to be more energy efficient.
  • baffle 31 arranged to further guide air expelled by fan 12 up and over products 10 and to cause the air flow to be close to the top wall 5 and parallel to the X axis as the cooled air enters compartment 2. This further improves the evenness of cooling products.
  • a bottom shelf 9 proximal to the bottom wall 7 but spaced apart from bottom wall 7 to define air space 32.
  • This air space 32 may be relatively compact but serves to allow air returning to air duct 13 to pass relatively unimpeded by products 10 within the compartment 2. That is, refrigerator 1 of figures 3 to 5 differs from refrigerator 1 of figures 1 and 2 in that a third, bottommost shelf 9 is provided instead of products 10 in the lower part of compartment 2 being supported directly on the bottom wall 7 of the compartment 2. More efficient air circulation results, at the cost of only a small reduction of usable volume within compartment 2.
  • Each shelf 9 may be supported by a ladder rack on side walls 3 and 4 to allow their vertical position to be adjusted (according to size of products). In some examples the lowest shelf support setting on the ladder rack may preserve the minimum required air space 13 for efficient air circulation.
  • FIG. 5 shows the air circulation in greater detail, indicated by arrows 14. It can be seen that air expelled by fan 12 is guided proximal to top wall 5 towards the far side wall 3, but also towards the front of the compartment 2 (closed by doors 8) and towards the back of compartment 2. This flow of cooled air may be aided by the shape and configuration of fan 12 and baffle 31. Cooled air thus travels around all sides of the compartment 2. Cooled air travelling towards the front the compartment 2 (towards doors 8) is important for energy efficiency as the doors 8 represent the highest energy loss due to being opened and reduced insulation even when closed. Supplying cooled air to the doors 8 counteracts this energy loss.
  • the fan 12 may additionally be rotated slightly about the Z axis (as well as about the Y axis as described above) to direct a greater proportion of air towards doors 8. Accordingly, air flow along the Y axis is not uniform in the compartment 2. With reference also now to figures 6 and 7 , rotation of the fan 12 (and hence also the airflow) about the Y axis and the Z axis is illustrated.
  • Figure 6 is a side view showing rotation of the fan and air flow about the Y axis in order to direct the airflow up and over products on the top shelf.
  • the fan 12 is shown relative to the side wall 4, which is aligned with the Z axis shown in figure 5 .
  • the angle 30 relative to the Z axis (the vertical direction) is identified.
  • the angle selected is, in some examples, proportional to the width of the refrigerator. That is, for a wider refrigerator it may be necessary to angle the air flow up more to pass over the full length of products on the top shelf. In some examples this may relate to the number of doors 8 that the refrigerator has: a one door refrigerator may be narrower than a two, three or four door refrigerator.
  • the angle 30 of the air flow relative to the Z axis may be a range of 30° to 90° (where 90° indicates that the airflow is parallel to top wall of the refrigerator and smaller angles indicate an inclination towards the top wall of the refrigerator), preferably 45° to 75°, and preferably approximately 60°.
  • Figure 7 is a side view showing rotation of the fan and air flow about the Z axis in order to direct the airflow preferentially towards the door or doors 8.
  • the fan 12 is shown relative to the side wall 4 and door 8.
  • Angle 33 is rotation of the fan 12 about the Z axis and relative to side wall 4 which is aligned with the Y axis.
  • the angle selected is, in some examples, proportional to the energy loss from the doors (from their sealing and when opened).
  • the angle 33 of the air flow relative to the Y axis may be a range of 75° to 90° (where 90° indicates that the airflow is parallel to the doors and smaller angles indicate an inclination towards the doors).

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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)

Claims (7)

  1. Conteneur de climatisation comprenant :
    un compartiment (2) pour le stockage de produits (10), le compartiment (2) étant défini par des parois (3-7) et pouvant être fermé à l'avant par au moins une porte (8) ;
    au moins une étagère (9) pour servir de support aux produits (10) ; et
    un ventilateur (12) pour la distribution d'air au sein du conteneur de climatisation ;
    dans lequel le compartiment (2) comprend en outre un conduit d'air (13) configuré de telle sorte que le ventilateur (12) tire de l'air depuis une position proximale vers une paroi de fond (7) du compartiment (2) ; et
    dans lequel une étagère (9) de fond est située proximale à la paroi de fond (7) du compartiment (2), mais espacée de celle-ci, pour définir une lame d'air (32) sous l'étagère (9) de fond en communication fluidique avec le conduit d'air (13) de telle sorte que le ventilateur (12) tire de l'air depuis la lame d'air (32) sous l'étagère (9) de fond
    caractérisé en ce que le ventilateur (12) est positionné sur une première paroi latérale (4) proximale à une paroi de sommet (5) et incliné vers le haut par rapport à une direction verticale de sorte que l'air expulsé par le ventilateur est dirigé vers la paroi de sommet (5) et se déplace d'un bout à l'autre de la paroi de sommet (5) vers une deuxième paroi latérale (3).
  2. Conteneur de climatisation selon la revendication 1, dans lequel le ventilateur (12) est incliné de telle sorte que l'air est dirigé vers le haut dans une plage de 30° à 90°, de préférence de 45° à 75° et de préférence de 60° par rapport à la direction verticale.
  3. Conteneur de climatisation selon la revendication 1, dans lequel des supports d'étagères sont montés sur des parois latérales du compartiment (2) pour permettre de positionner une pluralité d'étagères (9) à des hauteurs variables au sein du compartiment (2) .
  4. Récipient de climatisation selon l'une quelconque des revendications précédentes, comprenant en outre un déflecteur (31) configuré pour diriger l'air expulsé par le ventilateur (12) vers la paroi de sommet (5) du compartiment (2).
  5. Conteneur de climatisation selon l'une quelconque des revendications précédentes, dans lequel au moins deux ventilateurs (12) sont prévus en tandem pour distribuer l'air au sein du compartiment (2).
  6. Conteneur de climatisation selon l'une quelconque des revendications précédentes, dans lequel le conteneur de climatisation comprend un réfrigérateur ou congélateur et comprend en outre un système de refroidissement pour refroidir l'air aspiré dans le ventilateur de sorte que l'air refroidi est expulsé par le ventilateur (12).
  7. Conteneur de climatisation selon l'une quelconque des revendications précédentes, dans lequel le ventilateur (12) est en outre incliné vers une face avant du compartiment (2) qui est fermé par une porte (8) de sorte qu'une plus grande proportion d'air expulsé par le ventilateur (12) passe vers la face avant du compartiment (2) puis vers la face arrière du compartiment (2).
EP21163397.9A 2020-05-28 2021-03-18 Récipient de climatisation Active EP3916321B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20177210 2020-05-28

Publications (2)

Publication Number Publication Date
EP3916321A1 EP3916321A1 (fr) 2021-12-01
EP3916321B1 true EP3916321B1 (fr) 2025-07-02

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EP21163397.9A Active EP3916321B1 (fr) 2020-05-28 2021-03-18 Récipient de climatisation

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2631960A (en) * 2023-07-19 2025-01-22 Illinois Tool Works Air duct for a refrigerator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2250612A (en) * 1939-03-31 1941-07-29 Westinghouse Electric & Mfg Co Refrigerating apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060112720A1 (en) * 2004-11-29 2006-06-01 Kim Brian S Blow unit for a walk-in refrigerator
JP6131116B2 (ja) * 2013-06-14 2017-05-17 アクア株式会社 冷蔵庫
KR101327739B1 (ko) * 2013-08-27 2013-11-11 주식회사 스노파 냉동고
CN104567203A (zh) * 2014-11-27 2015-04-29 青岛海尔股份有限公司 冰箱

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2250612A (en) * 1939-03-31 1941-07-29 Westinghouse Electric & Mfg Co Refrigerating apparatus

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