EP2639532A2 - Structure de ventilateur monté incliné - Google Patents

Structure de ventilateur monté incliné Download PDF

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Publication number
EP2639532A2
EP2639532A2 EP12183628.2A EP12183628A EP2639532A2 EP 2639532 A2 EP2639532 A2 EP 2639532A2 EP 12183628 A EP12183628 A EP 12183628A EP 2639532 A2 EP2639532 A2 EP 2639532A2
Authority
EP
European Patent Office
Prior art keywords
fan
evaporator
eps
air
present
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Withdrawn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
EP12183628.2A
Other languages
German (de)
English (en)
Other versions
EP2639532A3 (fr
Inventor
Mehmet Ali Acar
Turgut Kokgiran
Volkan Kahraman
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.)
Indesit Co Beyaz Esya Sanayi ve Ticaret AS
Original Assignee
Indesit Co Beyaz Esya Sanayi ve Ticaret AS
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 Indesit Co Beyaz Esya Sanayi ve Ticaret AS filed Critical Indesit Co Beyaz Esya Sanayi ve Ticaret AS
Publication of EP2639532A2 publication Critical patent/EP2639532A2/fr
Publication of EP2639532A3 publication Critical patent/EP2639532A3/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F25D17/067—Evaporator fan units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/006—General constructional features for mounting refrigerating machinery components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/08—Parts formed wholly or mainly of plastics materials
    • 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

Definitions

  • the present invention relates to performance improvement of the fan used in no frost refrigerators by means of changing the angle and position thereof with respect to the evaporator and replacement of the material forming the air channels and fan mounting surface with a material having better heat and sound insulation.
  • evaporator is the section of the refrigerators where the low temperature and low pressure liquid from the throttling valve evaporates by the heat of the cabin. Heat transfer between the air and the evaporator surface is realized by means of natural or forced convection. Natural convection creates problems even with the small resistances encountered. Thus, air circulation obtained by means of forced convection using a fan is preferred.
  • the evaporator fan is used for forced distribution of the low temperature air provided in the evaporator into the sub sections. Fan motor is connected in series to the lower and upper door buttons. Motor disengages when any of the doors is opened. Thus, leakage of cold air to outside is prevented. The compressor stops when thermostat of the cooler switches off the circuit.
  • fan motor also stops for preventing the temperature rise in the freezer section.
  • fan motor is also disengaged for not sending the warm and moist air provided in the evaporator volume to the other parts of the cooler during melting of the ice in the evaporator section.
  • Evaporator fan is placed in the rear section of the evaporator, near the protective aluminum sheet walls.
  • fan is surrounded by polypropylene material, natural white color material obtained by polymerization (small molecules combine to form larger molecules) of propylene molecules obtained from "naptha", one of the crude oil derivatives.
  • polypropylene material natural white color material obtained by polymerization (small molecules combine to form larger molecules) of propylene molecules obtained from "naptha", one of the crude oil derivatives.
  • the availability and prices of said material directly depend on the availability and prices of the world crude oil reserves since, on average, crude oil derivatives of 97% are utilized in manufacturing thereof.
  • Improvements for suiting different places of use and purposes, can be made on the physical properties such as flexibility, heat resistance and brittleness of polypropylene raw material by introducing ethylene molecules into the propylene molecules resulting from a complex series of chemical processes. Propylene gas and ethylene gas are reacted under specific conditions in a reactor and introduction of ethylene molecules into the propylene molecules is achieved. Percentage of said ethylene introduced and placement positions thereof between the propylene molecules determine the physical properties of the obtained material. Polypropylene raw material is more expensive than other plastic materials. In addition, UV radiation resistance of polypropylene material is small and it exhibits high thermal expansion. Painting and coating thereof is difficult. It has low resistance to external weather conditions, it is prone to oxidation. It is flammable and interacts with chlorine containing solvents.
  • Expanded polystyrene i.e. EPS
  • EPS Expanded polystyrene
  • EPS is a lightweight, rigid plastic foam insulation material made of solid polystyrene particles. Expansion thereof is obtained with small amounts of pentane gas dissolved in the polystyrene base material during manufacturing. The gas expands by means of the heat applied in the form of steam to form EPS cells enclosed excellently. Said cells occupy as much as approximately 40 times of the polystyrene particle's volume.
  • EPS is molded in respective shapes according to the particle applications.
  • EPS is an important material for thermal and acoustic isolation of walls, roofs or floors. It is an easy to use, ideal and cost effective material in all types of buildings. EPS material is used as lightweight filler or a space forming material. It is also used as floating material. EPS material consists of 98% air, thus, it is a high quality thermal insulator. In addition, EPS material absorbs sound of impact in floating floors as well as sound generated in the walls. For this reason, it is a proven acoustic insulator.
  • the material surrounding the fan is a polypropylene derivative. Said material cannot absorb the noise generated by the fan as required.
  • the present invention relates to a refrigerator comprising a heat insulated wall, a storage compartment, an evaporator, an air conveying channel comprising air outlet vents opening to the storage compartment, a fan providing blowing of air from the evaporator towards the conveying channel, a vacuum opening positioned on said conveying channel and carrying out air vacuum by means of the static pressure drop occurring in the conveying channel walls during fan's blowing of air inside the conveying channel to the storage compartment through the air outlet vents, a condensation chamber conveying the air to the vacuum opening and at least one condenser element positioned inside said condensation chamber.
  • Another application related with the subject matter is the patent application JP 2010230286 .
  • the fan installation according to said application is intended to provide ease of installation and reduce fan noise.
  • the present invention which meets the aforementioned requirements, eliminates all the drawbacks and provides some additional advantages, relates to performance improvement of the fan used in no frost refrigerators by means of changing the angle and position thereof with respect to the evaporator and replacement of the material forming the air channels and fan mounting surface with a material having better heat and sound insulation.
  • An object of the present invention is to reduce pressure drop formed on the fan in the no frost refrigerators.
  • Another object of the present invention is to enable effective heat transfer of the air sucked out of the evaporator with all surfaces of the evaporator in the no frost refrigerators.
  • Another object of the present invention is to provide quieter operation by increasing sound insulation through surrounding the fan with EPS material.
  • Another object of the present invention is to increase thermodynamic efficiency by the fan assembly according to the present invention.
  • the present invention for the purpose of providing all the advantages, which are described above and will be understood from the detailed description given below, relates to fan assembly structure used in the no frost refrigerators, comprising a fan and evaporator, wherein it comprises fan mounting angle reducing pressure drop forming on the fan between the fan and the evaporator and increasing thermodynamic efficiency by enhancing heat transfer effectiveness of the air sucked over the evaporator with all surfaces of the evaporator.
  • the present invention in order to achieve all objects thereof, comprises EPS (expanded polystyrene rigid foam) material allowing for forming air channel by surrounding said fan and realizing heat and sound insulation.
  • EPS expanded polystyrene rigid foam
  • the present invention in general, comprises fan (1) having reduced pressure drop and enabling more effective use of the evaporator. Position of said fan (1) with respect to the evaporator (3) is changed as shown in Figure 1 . A fan mounting angle (4) is formed between the fan (1) and the evaporator (3) in order to improve flow and heat transfer properties.
  • an evaporator (3) operating as heat exchanger is provided in the present invention. Said evaporator (3) cools the air circulating inside the refrigerator by means of the refrigerant gas.
  • Another feature of the inclined mounted fan (1) structure according to the present invention is the insulating material (2) employed. Said insulating material (2) is made of EPS (expanded polystyrene rigid foam) forming air channel by surrounding the fan (1) and with good sound insulating feature.
  • EPS expanded polystyrene rigid foam
  • Said fan mounting angle (4) of the inclined mounted fan structure according to the present invention is not provided in the prior art shown in Figure 2 .
  • the fan mounting angle (4) according to the present invention is formed such that the fan (1) has an inclination in the clockwise (+) direction with respect to the evaporator (3).
  • said fan mounting angle (4) has values greater than 90° and less than 180°, wherein it may be in preferred magnitudes so as to increase the thermodynamic efficiency.
  • air intake prevents full performance operation of the evaporator (3) when the fan (1) and the evaporator (3) are in the same direction, i.e. without any angle in between them and in vertical position, because, air tends to pass over only a portion of the evaporator (3).
  • fan (1) by means of the inclined mounted fan structure according to the present invention, carries out suction so as to utilize all surfaces of the evaporator (3).
  • insulating material (2) employed.
  • insulating material (2) forming the air channels and the fan mounting surface is polypropylene (PP).
  • EPS expanded polystyrene rigid foam
  • the EPS mentioned herein, is a lightweight, rigid plastic foam insulation material made of solid polystyrene particles.
  • EPS is an important material for thermal and acoustic isolation of walls, roofs or floors.
  • EPS material is also used as lightweight filler or a space forming material. EPS material absorbs sound of impact in floating floors as well as sound generated in the walls. For this reason, it is a proven acoustic insulator. Operation of the fan (1) with less noise is thus achieved by surrounding thereof with EPS material and discomfort caused thereby to the surroundings thereof is reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP12183628.2A 2012-03-13 2012-09-10 Structure de ventilateur monté incliné Withdrawn EP2639532A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR201202841 2012-03-13

Publications (2)

Publication Number Publication Date
EP2639532A2 true EP2639532A2 (fr) 2013-09-18
EP2639532A3 EP2639532A3 (fr) 2014-10-01

Family

ID=46880602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12183628.2A Withdrawn EP2639532A3 (fr) 2012-03-13 2012-09-10 Structure de ventilateur monté incliné

Country Status (1)

Country Link
EP (1) EP2639532A3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103528306A (zh) * 2013-10-30 2014-01-22 合肥华凌股份有限公司 风道组件和具有它的冰箱
US10254037B2 (en) 2016-03-24 2019-04-09 Electrolux Home Products, Inc. Evaporator box fan mounting solution

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR200708742A2 (tr) 2007-12-17 2009-07-21 Bsh Ev Aletleri̇ Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ Bir buzdolabı
JP2010230286A (ja) 2009-03-30 2010-10-14 Sharp Corp ファンモータの取り付け構造及び冷蔵庫

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4311160A1 (de) * 1993-04-05 1994-10-06 Licentia Gmbh Lamellenverdampfer für Haushalt-Umluft-Kühl- und Gefriergeräte
JP2002130910A (ja) * 2000-10-27 2002-05-09 Sharp Corp 冷蔵庫
JP4632838B2 (ja) * 2005-03-31 2011-02-16 三洋電機株式会社 冷却装置
DE202005014370U1 (de) * 2005-09-12 2006-07-20 BSH Bosch und Siemens Hausgeräte GmbH No-Frost-Kältegerät
EP1906117B1 (fr) * 2006-09-22 2016-11-09 Electrolux Home Products Corporation N.V. Procédé pour la production des congelateurs armoires
DE102009003263A1 (de) * 2009-05-20 2010-11-25 BSH Bosch und Siemens Hausgeräte GmbH No-Frost-Kältegerät
KR101631904B1 (ko) * 2009-07-15 2016-06-20 엘지전자 주식회사 냉장고

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR200708742A2 (tr) 2007-12-17 2009-07-21 Bsh Ev Aletleri̇ Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ Bir buzdolabı
JP2010230286A (ja) 2009-03-30 2010-10-14 Sharp Corp ファンモータの取り付け構造及び冷蔵庫

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103528306A (zh) * 2013-10-30 2014-01-22 合肥华凌股份有限公司 风道组件和具有它的冰箱
CN103528306B (zh) * 2013-10-30 2016-05-18 合肥华凌股份有限公司 风道组件和具有它的冰箱
US10254037B2 (en) 2016-03-24 2019-04-09 Electrolux Home Products, Inc. Evaporator box fan mounting solution

Also Published As

Publication number Publication date
EP2639532A3 (fr) 2014-10-01

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