EP1848937A1 - Dispositif de refroidissement et procede de commande - Google Patents

Dispositif de refroidissement et procede de commande

Info

Publication number
EP1848937A1
EP1848937A1 EP06710892A EP06710892A EP1848937A1 EP 1848937 A1 EP1848937 A1 EP 1848937A1 EP 06710892 A EP06710892 A EP 06710892A EP 06710892 A EP06710892 A EP 06710892A EP 1848937 A1 EP1848937 A1 EP 1848937A1
Authority
EP
European Patent Office
Prior art keywords
air flow
cooling device
compartment
air
temperatures
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Withdrawn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
EP06710892A
Other languages
German (de)
English (en)
Inventor
Alphan Arcelik Anonim Sirketi SAMDAN
Turgay Arcelik Anonim Sirketi Ercan
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.)
Arcelik AS
Original Assignee
Arcelik 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 Arcelik AS filed Critical Arcelik AS
Publication of EP1848937A1 publication Critical patent/EP1848937A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • 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
    • F25D2317/0684—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 the fans allowing rotation in reverse direction
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature
    • F25D2700/123—Sensors measuring the inside temperature more than one sensor measuring the inside temperature in a compartment

Definitions

  • the present invention relates to a cooling device wherein the air circulation is improved and a control method thereof.
  • the air in a cooling and/or freezing compartment is circulated within the compartment by the help of a fan to maintain a homogeneous distribution of heat.
  • the air is preferably passed over the evaporator.
  • the air that reaches its lowest temperature right after passing over the evaporator is heated as it circulates within the compartment.
  • the food items that the air contacts first after having left the evaporator are 3-4°C cooler than the food items that the air ultimately contacts.
  • the food on the closer shelf has to be cooled down to -22°C. This is a factor which both reduces efficiency by prolonging the cooling time and increases energy consumption.
  • the aim of the present invention is to realize a cooling device and a control method thereof wherein the heat distribution within the compartment is controlled more efficiently and a fast cooling process is accomplished.
  • Figure 1 - is the side schematic view of a cooling device.
  • Figure 2 - is the front schematic view of a cooling device.
  • Figure 3 - is the front schematic view of a cooling device in another embodiment.
  • Figure 4 - is the front schematic view of a cooling device in yet another embodiment.
  • Figure 5 - is the flow chart of a control method.
  • Figure 6 - is the flow chart of another embodiment of the control method.
  • Figure 7 - is the flow chart of a further embodiment of the control method.
  • Figure 8 - is the flow chart of an alternative embodiment of the control method.
  • the cooling device (1) of the present invention comprises, a compressor (4) compressing the refrigerant fluid and circulating it in the refrigerant cycle,
  • At least two sensors (6, 600) measuring temperatures (TA, TB) situated at different points (A, B) in the compartment (2) and,
  • control unit (7) which determines the direction of the air flow (Fl, F2) by evaluating the temperatures (TA, TB) measured by the sensors (6, 600) and controls the fan (5) according to this choice ( Figure 1).
  • the control unit (7) compares the temperature values (TA, TB) measured by the sensors (6, 600) and provides the direction of the air flow (Fl, F2) to be such that the air, after sweeping past the evaporator (3), first reaches the higher temperature point within the compartment (2), by flowing from the comparatively higher temperature point towards the lower temperature point (in a clockwise or counterclockwise direction between A and B).
  • the control unit (7) gathers information on the temperature values (TA, TB) measured by the sensors (6, 600) and, if necessary, about whether or not the compressor (4) is operating, and controls the fan (5) accordingly.
  • the control unit (7) is electrically connected to the compressor (4), the sensors (6, 600) and the fan (5) to this end.
  • the compartment (2) comprises a channel (8) in which the evaporator (3) and the fan (5) are situated and at least two orifices (9, 900) for allowing air to enter and exit from this channel (8).
  • the air flow (Fl, F2) enters the channel (8) from one orifice (9), flows above the evaporator (3), and leaves the channel (8) from the other orifice (900).
  • the change of direction of the air flow (Fl, F2) is provided by a fan (5), positioned in the compartment (2), preferably in the channel (8), which can circulate the air in the clockwise (Fl) and in the reverse (F2) direction within the compartment (2) ( Figure 2).
  • (Fl, F2) is provided by two fans (5, 500) side by side, whereby one of the fans circulates the air in only clockwise direction (Fl) and the other in only counterclockwise direction (F2) ( Figure 3).
  • the air passing over the evaporator (3) for example, first reaches A (Fl) when only the first fan (5) operates, and first reaches B (F2) when only the second fan (500) operates.
  • the two fans (5, 500) do not operate concurrently in order to have the air flow (Fl, F2) create a circulation within the compartment (2).
  • two fans (5, 500) are positioned at different points within the compartment (2), one of the fans circulating the air only in a clockwise (Fl) direction and the other in the counter clockwise direction (F2) ( Figure 4).
  • the upper fan (5) can circulate the air in a clockwise direction (Fl)
  • the lower fan (500) can circulate in a counterclockwise direction (F2)
  • the air which passes over the evaporator (3) will first reach A (Fl) when only the first fan (5) operates, and will first reach B (F2) when only the second fan (500) operates.
  • the control unit (7) of the cooling device (1) of the present invention functions according to the method given below: comparing (101) the temperatures (TA, TB) measured at two different points (A, B); controlling (102, 103) the fan(s) (5, 500) so that the air flows in a direction (Fl, F2) wherein the air first reaches the point that is hotter (from A to B or from B to A) after sweeping the evaporator (3).
  • the compressor (4) before comparing (101) the temperatures (TA, TB), the compressor (4) is controlled (105) for whether it is operating or not, if it is not operating, air flow (Fl, F2) stops (106) and the step wherein comparing (101) the temperatures (TA, TB) is carried out only after the compressor (4) starts operating ( Figure 6).
  • the first direction of the air flow (Fl, F2) after the compressor (4) starts operating is a direction determined by the producer, for example from A to B. But if the cooling device (1) is not operating for the first time, the first direction of the air flow (Fl, F2) after the compressor (4) starts operating is the direction when the compressor (4) last operated.
  • the difference of the two temperatures (TB-TA) is calculated. This difference is compared (108) to a value (DT2) set by the producer. While the said difference is below this value (DT2), the direction of the air flow is not changed (104). If the said difference is above this value (DT2), the flow is changed (102) to the reverse direction.
  • DT2 a value set by the producer. While the said difference is below this value (DT2), the direction of the air flow is not changed (104). If the said difference is above this value (DT2), the flow is changed (102) to the reverse direction.
  • the DTl and DT2 values can be equal or different from each other.
  • a threshold value (TAC, TBC) is assigned to each one of the sensors (6, 600) and the values read are compared (109, 110) not to each other but to these values, if these threshold values are exceeded, the air flow after the evaporator (3) is directed so that it first reaches to the point where the threshold value is exceeded. For example, if the temperature value (TA) read by the first sensor (6) exceeds the threshold value (TAC) assigned to this sensor (6) (TAfUTAC), the direction of the air flow is decided to be from A to B (Fl).
  • the temperature (TB) measured by the other sensor (600) is checked (110) for whether it exceeds the threshold value (TBC) of this sensor (600). If it is exceeded (TB fU TBC), the air circulation (F2) is from B to A (103), otherwise the circulation direction is from A to B (102) ( Figure 8).
  • the control unit (7) operates the upper fan (5) which can circulate the air both clockwise and counter clockwise ( Figure 2), so that the air flow is from A to B (Fl).
  • the hot food on the upper shelf will cool rapidly since the air passing over the evaporator will first reach the upper shelf.
  • the control unit (7) will circulate the air from B to A (F2), the food on the lower shelf will cool since cold air will first flow through the lower shelf.
  • the temperature of the compartment (2) is controlled in more points by positioning the sensors (6, 600) and the fan(s) (5, 500) suitably, creating an air flow which ensures that cool air reaches first of all the required region . Consequently the speed and efficiency of cooling is enhanced, and energy consumption 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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

Dispositif de refroidissement (1) à circulation d'air au moins dans deux directions différentes et procédé de commande.
EP06710892A 2005-02-16 2006-02-13 Dispositif de refroidissement et procede de commande Withdrawn EP1848937A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200500510 2005-02-16
PCT/IB2006/050465 WO2006087669A1 (fr) 2005-02-16 2006-02-13 Dispositif de refroidissement et procede de commande

Publications (1)

Publication Number Publication Date
EP1848937A1 true EP1848937A1 (fr) 2007-10-31

Family

ID=36585762

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06710892A Withdrawn EP1848937A1 (fr) 2005-02-16 2006-02-13 Dispositif de refroidissement et procede de commande

Country Status (5)

Country Link
EP (1) EP1848937A1 (fr)
KR (1) KR100924733B1 (fr)
CN (1) CN100538226C (fr)
RU (1) RU2362949C2 (fr)
WO (1) WO2006087669A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008004543U1 (de) * 2008-02-26 2009-07-09 Liebherr-Hausgeräte Lienz Gmbh Kühl- und/oder Gefriergerät
DE102010002419A1 (de) * 2010-02-26 2011-09-01 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät
KR20130073543A (ko) * 2011-12-23 2013-07-03 엘지전자 주식회사 냉장고
CN110360790A (zh) * 2014-08-20 2019-10-22 东芝生活电器株式会社 冰箱

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0752955B2 (ja) * 1986-02-05 1995-06-05 松下電器産業株式会社 投写型テレビジヨン受像機
KR0160424B1 (ko) * 1994-06-01 1999-01-15 윤종용 냉장고
JP2000130913A (ja) * 1998-10-28 2000-05-12 Toshiba Corp 冷蔵庫
JP2000346531A (ja) * 1999-05-31 2000-12-15 Toshiba Corp 冷蔵庫

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006087669A1 *

Also Published As

Publication number Publication date
RU2007134350A (ru) 2009-03-27
RU2362949C2 (ru) 2009-07-27
WO2006087669A1 (fr) 2006-08-24
KR100924733B1 (ko) 2009-11-04
CN100538226C (zh) 2009-09-09
KR20070103450A (ko) 2007-10-23
CN101128711A (zh) 2008-02-20

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