EP1780485A1 - Kühlschrank - Google Patents

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Publication number
EP1780485A1
EP1780485A1 EP05109698A EP05109698A EP1780485A1 EP 1780485 A1 EP1780485 A1 EP 1780485A1 EP 05109698 A EP05109698 A EP 05109698A EP 05109698 A EP05109698 A EP 05109698A EP 1780485 A1 EP1780485 A1 EP 1780485A1
Authority
EP
European Patent Office
Prior art keywords
cabinet
refrigerator according
wall
refrigeration module
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.)
Withdrawn
Application number
EP05109698A
Other languages
English (en)
French (fr)
Inventor
Håkan Sjölander
John Andersen
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.)
ENJOY SALES AB
Original Assignee
ENJOY SALES AB
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 ENJOY SALES AB filed Critical ENJOY SALES AB
Priority to EP05109698A priority Critical patent/EP1780485A1/de
Publication of EP1780485A1 publication Critical patent/EP1780485A1/de
Withdrawn legal-status Critical Current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
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F25D19/02—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors plug-in type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/06—Damage
    • 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
    • F25D2317/065—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 return
    • F25D2317/0651—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 return through the bottom
    • 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

Definitions

  • the present invention relates to refrigerators having a detachable refrigeration machine.
  • Refrigerators of many different kinds are employed in domestic environments, such as in peoples homes, as well as in commercial environments, such as in shops and stores.
  • the different refrigerators have in common that they are used for storing products, which are susceptible to be harmed if exposed to the surrounding temperature, or the variation of the surrounding temperature, for a certain amount of time.
  • a refrigerator comprises a chamber for the cooled products and a refrigerating machine for cooling the chamber.
  • the chamber and the refrigerating machine are one integrated unit.
  • a problem with such traditional refrigerators is that, if the refrigerating machine is found to be defect such that the desired temperature inside the chamber cannot be maintained, the entire refrigerator has to be put out of service. Since repairs often have to be performed in a workshop, the entire refrigerator has to be transported to the workshop. Therefore, it is necessary to empty the chamber of the stored products and put them in another refrigerator for continued cooling, which is laborious and time consuming work especially if the refrigerator is large. Furthermore, if a refrigerator with enough space to house the products of the defect refrigerator cannot be found, the products may have to be wasted. For a commercial shop keeper having several refrigerators, such waste can amount to a considerable loss.
  • US 5,417,081 discloses a refrigerator apparatus equipped with a compact refrigeration machine mounted in a refrigeration unit.
  • the refrigeration unit is slidably arranged on rails in the bottom of the refrigeration apparatus.
  • the refrigerating unit can be pulled out of the refrigerator apparatus and a replace unit can be pushed in while the camber with the cooled products is left unaffected.
  • DE 39 25 676 A1 discloses a compact refrigeration machine similar to the one disclosed in US 5,417,081 .
  • the refrigeration machine according to DE 39 25 676 A1 is located in the upper part of the refrigerator housing.
  • the upper part of the refrigerator housing is disconnectable from the lower part of the refrigerator housing.
  • the upper part of the refrigerator housing which includes the refrigeration machine, can be lifted off and transported away for service and repair of the refrigeration machine.
  • a problem with such compact refrigeration machines is, that they are less effective than the integrated refrigeration machine of a traditional refrigerator.
  • the refrigerator according to the invention comprises a cabinet for cooled products, which cabinet has walls and a roof. Furthermore, the refrigerator comprises a refrigeration module including a refrigerating machine and a wall unit.
  • the wall unit of the refrigeration module extends in parallel with and covers a wall section of one of the walls of the cabinet, such that the cabinet is cooled by the refrigerating machine of the refrigeration module.
  • the refrigeration module is detachable from the cabinet.
  • the refrigerating machine Due to the refrigerating machine being housed in a wall unit, the refrigerating machine does not need to be a compact machine.
  • the space in the wall unit is large enough for housing larger heat absorbing parts and heat dissipating parts of the refrigerating machine, which increases the efficiency of the machine.
  • the refrigeration module can be detached and replaced by another module, such that the products inside of the cabinet are only to a minor amount effected by the break down.
  • the detachable refrigeration module is easier accessible and easier to handle than the disconnectable refrigeration machines of the prior art.
  • the term "refrigerator” includes all kinds of cabinets cooled to temperatures above or below the freezing point for storing cooled product for domestic or commercial purposes.
  • the refrigerator can be a cabinet having a front opening for accessing the cooled products inside of the cabinet, and can be provided with a door for closing the front opening.
  • the refrigerator can include a wheeled carriage for carrying the cooled products or include fixed or movable shelves.
  • the refrigerator can also include a vending unit for dispensing a cooled product after insertion of for example coins or a credit card.
  • wall section includes any combination of open and closed wall portions, from a fully open to a fully closed wall section.
  • the refrigerator according to the invention can have a rectangular cross section and four walls.
  • the refrigerator can also have a curved cross section, for example a circular or oval, and only one surrounding curved wall.
  • the areas of the cabinet that are not covered by the refrigeration module, will normally be isolated, while the covered parts can be insulated as well as uninsulated, where the latter is advantageous for some reasons as will be explained below.
  • the wall section can be a whole wall or only a part of a wall of the cabinet, for example a section located transversally over the wall spaced from the top and bottom ends thereof. It is possible that the wall section is located extending vertically over at least a substantial portion of the height of the cabinet, such as for example from the bottom to the top of the wall, and over a width thereof.
  • the refrigerator module is detachable from the cabinet.
  • the refrigerator module including the refrigerating machine can be removed from the refrigerator and transported off as a separate unit.
  • the refrigerator module can be loosely arranged side by side with the associated wall of the cabinet, wherein the relevant wall of the wall unit necessarily need not touch the wall section, although this normally enhances the cooling efficiency. The cooling efficiency is even more enhanced if the wall section is uninsulated. If the wall section is a fully open portion of a cabinet wall, the wall unit will close the opening when placed at the cabinet for cooling thereof.
  • the refrigeration module can be detachably fastened to the cabinet or another part of the refrigerator by any suitable means, such as screws, hooks, clasps or any other locking devices.
  • the refrigeration module need not be attached to a part of the refrigerator at all, it can be arranged leaning against the cabinet or another suitable part, or it can be a free standing unit.
  • the detachable fastening is preferred.
  • the refrigeration module is provided with wheels.
  • the wheels carry the refrigeration module, such that it is easily movable when it has been detached from the cabinet. If the refrigerating machine of the refrigeration module has been found to be defect, an operator can detach the refrigeration module from the cabinet and easily pull it away for repairs at a suitable location.
  • the wheels are retractable.
  • the wall unit of the refrigeration module covers essentially entirely one of the walls of the cabinet.
  • the refrigerating machine includes a compressor, a condenser and an evaporator, which are interconnected by piping for circulating a refrigerant.
  • the evaporator includes piping located over an area of a cabinet facing wall of the wall unit. Due to the increased size of the wall unit of the refrigeration module, the heat-absorption quality of the refrigerator according to the invention is thereby considerably increased compared with the compact refrigerating machines of the prior art.
  • the condenser includes piping located over an area of an outer wall of the wall unit. Due to the increased size of the available area of the wall unit of the refrigeration module, the heat dissipation of the refrigerator according to the invention is thereby considerably increasable compared with the compact refrigerating machines of the prior art.
  • the refrigeration module includes a top unit arranged at and covering a ceiling section of a ceiling or covering a roof of the cabinet.
  • the top unit covers essentially entirely the ceiling of the cabinet.
  • parts of the refrigerating machine are housed in the top unit.
  • a wall of the cabinet is equipped with an air duct that is connected to the inside of the cabinet, and a circulating fan is arranged for circulating the air in the cabinet.
  • the air is cooled by piping of the evaporator, which protrudes into the air duct, from the outside of the cabinet.
  • the wall unit includes an air duct having a cold air outlet connected to the inner of the cabinet at a bottom portion thereof and a warm air inlet connected to the inner of the cabinet at a top portion thereof
  • the refrigeration module includes a circulating fan for circulating air through the air duct and the cabinet
  • the evaporator includes piping located over an area in the air duct for cooling air in the air duct.
  • the refrigerator 10 includes a cabinet 1 for storing cooled products.
  • the cabinet 1 has two isolated side walls 2, a front opening closed by a front door 3, and a roof 19.
  • the refrigerator 10 is provided with a refrigeration module 5 according to the invention.
  • the refrigeration module 5 is releasable from the cabinet and is easily movable since there are two fixed wheels 23 at the bottom thereof and two foldable wheels 24 at a lower end thereof. By means of the wheels 23, 24 the refrigeration module 5 can be pushed around like a carriage.
  • the topmost roof 4 of the refrigerator 10 constitutes the roof of the refrigeration module 5, while the roof 19 of the very cabinet 1 is lowered in relation to the upper edges of the walls 2 and a front panel 28.
  • the cabinet 1 has a wall section in form of an insulated rear wall 18 connected to the roof 19, which rear wall 18 is covered by the refrigeration module 5 when locked to the cabinet 1.
  • the rear wall 18 of the cabinet 1 is provided with an opening 20, about in the middle thereof.
  • the opening 20 is a recess in that it extends through a rear wall plate 39 of the rear wall 18 and into a space between that rear wall plate 39 and a front wall plate 38 of the rear wall 18, but not through that front wall plate 38.
  • the space between the front and rear wall plates 38, 39 of the rear wall 18 is filled with an isolating material, except for an air duct 31 extending vertically internal of the rear wall 18, and passing the opening 20.
  • the air duct 31 connects an upper space 32 of the cabinet 1 with an air outlet 37 arranged on the front wall plate 38 in a lower portion of the inner of the cabinet 1.
  • the upper space 32 is defined by the cabinet roof 19 and a cover plate 33, which covers a circulating fan 34 attached to the underside of the roof 19.
  • the cover plate 33 is provided with apertures enabling air passage.
  • the refrigeration module 5 includes an evaporator 14, which is received in the recess 20. Thereby, the air flowing through the air duct 31 passes the evaporator 14, which cools the air.
  • the refrigerator module further comprises a wall unit 6 and a top unit 7, attached to the wall unit 6.
  • a refrigerating machine which comprises a compressor 8, a top and a main condenser 9, 11 and the evaporator 14, which are interconnected by piping for circulating a refrigerant, is housed in the refrigeration module 5.
  • the compressor 8 and the top condenser 9 are located in the top unit 7.
  • the main condenser 11 of the refrigerating machine is arranged in loops for providing a large area for heat dissipation.
  • the top condenser 9 is provided with a condenser fan 10.
  • the cabinet 1 has a wall section in form of an uninsulated rear wall plate 43, a roof 49 and a ceiling including a ceiling section in form of an uninsulated ceiling plate 44.
  • the ceiling 44 is spaced from the roof 49.
  • the rear wall plate 43 is provided with an air outlet opening 45 and the ceiling plate 44 is provided with an air intake opening 47.
  • the refrigeration module 42 includes the same basic refrigerating machine parts, i.e. condenser, compressor, etc. as the previously described embodiment. However the air circulation equipment is also arranged in the refrigeration module, rather than in the cabinet 41.
  • the refrigeration module 42 is provided with an air duct 12 having a horizontal portion 12a and a vertical portion 12b.
  • the vertical portion 12b of the air duct 12 is limited by the rear wall 52 of the wall unit 6 and a cover plate 13 engaged with the rear wall 52 at a front, or inward facing, side 54 thereof.
  • the evaporator 74 is arranged over a large area of the inward facing side 54 of the rear wall 52 of the wall unit 6.
  • the horizontal portion of the air duct is limited by a double bottom, comprising a lower bottom plate 26 and an upper bottom plate 27 vertically spaced from the lower bottom plate 26, of the top unit 7.
  • a circulating fan 22 is arranged in the top unit 7 between the upper and lower bottom plates 26, 27.
  • the cover plate 13 is provided with an air outlet 15.
  • a drip tray 17 is arranged, which is provided with a heat tube (not shown) in the part below the main condenser 11. Defrost water from the evaporator 74 is lead through the rear wall 24 of the wall unit 6 and evaporated by the heat tube under the main condenser 11.
  • the refrigeration module 42 is arranged such that the cover plate 13 of the wall unit 6 covers and extends in parallel with the rear plate 43 of the cabinet 41, and the top unit 7 is arranged in the space between the ceiling plate 44 and the roof 49 covering and extending in parallel with the ceiling plate 44.
  • the circulating fan 22 of the refrigeration module 42 is aligned with the air outlet opening 47 of the cabinet and the air intake 46 of the cover plate 13 is aligned with the air outlet opening 46 of the cabinet 1.
  • the air in front of the evaporator 14 in the air duct 12 will be cooled. Due to the circulating fan 22, the cooled air will be blown into the cabinet 1 through the air opening 47. Air will be extracted by the circulating fan 22 through the openings 45 and 46 at the bottom portion of the cabinet 41, and will be forced by the circulating fan 22 through the vertical and horizontal portions 12a, 12b of the air duct 12, to be recirculated passed the evaporator 14 in the air duct 12. In addition, the products inside the cabinet 41, will be cooled by heat exchange directly through the rear wall plate 43.
  • the refrigeration module is provided with two handles 16, and the wheels 23, 24. Thereby it is easy to remove the refrigeration module from and pull the refrigeration module against the cabinet.
  • the refrigeration module is placed against the cabinet it is fastened by any suitable releasable fastening means (not shown).
  • the refrigerating machine is connected with a power source.
  • the cover plate of the wall unit can be discarded. Then the air duct can be obtained by means of narrow side walls protruding from the rear wall of the wall unit and engaging the rear of the cabinet.
  • the wall plate of the cabinet can be discarded. Then the cover plate of the wall unit constitutes the rear wall of the cabinet.
  • the air duct can be obtained in many other ways as well, including other structures of the horizontal portion.
  • the parts of the refrigerating machine can be relocated as appropriate for different applications, while maintaining the idea of the detachable refrigeration module having a wall unit.
EP05109698A 2005-10-18 2005-10-18 Kühlschrank Withdrawn EP1780485A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05109698A EP1780485A1 (de) 2005-10-18 2005-10-18 Kühlschrank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05109698A EP1780485A1 (de) 2005-10-18 2005-10-18 Kühlschrank

Publications (1)

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EP1780485A1 true EP1780485A1 (de) 2007-05-02

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ID=35966013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05109698A Withdrawn EP1780485A1 (de) 2005-10-18 2005-10-18 Kühlschrank

Country Status (1)

Country Link
EP (1) EP1780485A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009065200A1 (en) * 2007-11-23 2009-05-28 Whirlpool S.A. Refrigeration unit and refrigeration system
WO2010143973A1 (en) * 2009-06-10 2010-12-16 Enjoy Group Ab A refrigerator with rotatable shelves
EP2447636A1 (de) * 2007-09-12 2012-05-02 Whirlpool S.A. Kühlmodul und Kühlsystem
CN103080674A (zh) * 2010-08-27 2013-05-01 奥特冷机系统有限公司 制冷器具，尤其是制冷搁板单元
DE102016013226A1 (de) * 2016-11-07 2018-05-09 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
US10334967B2 (en) 2016-07-25 2019-07-02 Retail Space Solutions Llc Merchandiser and methods relating to same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156102A (en) * 1963-05-07 1964-11-10 Victory Metal Mfg Company Refrigerator construction
EP0099108A1 (de) * 1982-07-14 1984-01-25 Hitachi, Ltd. Kühlschrank
DE3540084A1 (de) * 1985-11-12 1987-05-14 Linde Ag Kuehlmoebel
DE3925676A1 (de) 1989-08-03 1991-02-07 Fritz Schweikle Kuehlvitrine
US5417081A (en) 1992-07-01 1995-05-23 The Coca-Cola Company Modular refrigeration apparatus
US20040168458A1 (en) * 2003-02-28 2004-09-02 Sung Ki Rin Food preparation table

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156102A (en) * 1963-05-07 1964-11-10 Victory Metal Mfg Company Refrigerator construction
EP0099108A1 (de) * 1982-07-14 1984-01-25 Hitachi, Ltd. Kühlschrank
DE3540084A1 (de) * 1985-11-12 1987-05-14 Linde Ag Kuehlmoebel
DE3925676A1 (de) 1989-08-03 1991-02-07 Fritz Schweikle Kuehlvitrine
US5417081A (en) 1992-07-01 1995-05-23 The Coca-Cola Company Modular refrigeration apparatus
US20040168458A1 (en) * 2003-02-28 2004-09-02 Sung Ki Rin Food preparation table

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2447636A1 (de) * 2007-09-12 2012-05-02 Whirlpool S.A. Kühlmodul und Kühlsystem
WO2009065200A1 (en) * 2007-11-23 2009-05-28 Whirlpool S.A. Refrigeration unit and refrigeration system
WO2010143973A1 (en) * 2009-06-10 2010-12-16 Enjoy Group Ab A refrigerator with rotatable shelves
CN103080674A (zh) * 2010-08-27 2013-05-01 奥特冷机系统有限公司 制冷器具，尤其是制冷搁板单元
CN103080674B (zh) * 2010-08-27 2017-04-12 奥特冷机系统有限公司 制冷器具，尤其是制冷搁板单元
US9677804B2 (en) 2010-08-27 2017-06-13 Aht Cooling Systems Gmbh Refrigerating furniture, in particular refrigerating shelf
US10334967B2 (en) 2016-07-25 2019-07-02 Retail Space Solutions Llc Merchandiser and methods relating to same
DE102016013226A1 (de) * 2016-11-07 2018-05-09 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

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