EP1549891B1 - Temperature control mechanism - Google Patents

Temperature control mechanism Download PDF

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Publication number
EP1549891B1
EP1549891B1 EP03776170A EP03776170A EP1549891B1 EP 1549891 B1 EP1549891 B1 EP 1549891B1 EP 03776170 A EP03776170 A EP 03776170A EP 03776170 A EP03776170 A EP 03776170A EP 1549891 B1 EP1549891 B1 EP 1549891B1
Authority
EP
European Patent Office
Prior art keywords
thermostat
shutter valve
shaft
refrigerator
fresh food
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.)
Expired - Lifetime
Application number
EP03776170A
Other languages
German (de)
French (fr)
Other versions
EP1549891A2 (en
Inventor
Haldun Dingec
Nihat Bayiz
Ismail Özcan
Yüksel Atilla
Veysi Ercan
Ahmet Dincer
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
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Filing date
Publication date
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Application filed by Arcelik AS filed Critical Arcelik AS
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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
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • 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
    • F25D17/065—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 with compartments at different temperatures
    • 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
    • F25D2317/067—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 air ducts
    • F25D2317/0672—Outlet ducts
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/04—Refrigerators with a horizontal mullion
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/30—Quick freezing
    • 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
    • F25D29/005—Mounting of control devices

Definitions

  • the present invention is concerned with a temperature control mechanism used in controlling temperature in preferably two compartment refrigerators.
  • refrigerators with fresh food compartment and a freezer compartment various methods of control are used to secure that such freezer and fresh food compartments remain at desired temperature ranges.
  • desired temperature is provided by distributing cool air between various compartments
  • working periods of the compressor are adjusted in accordance with temperature sensed through thermostatic control device in fresh food compartment or freezer compartment and shutters, mechanic shutter, lids, gates and similar mechanisms are used to adjust air flow by reducing or widening the passage opening between the compartments.
  • adjustment of air passage opening between compartments is carried out by means of thermostatic control at distinct points.
  • the object of the present invention is to provide a single temperature control mechanism both to provide a thermostat control to adjust the temperature of the freezer and fresh food compartment and to control the air flow between those compartments and also to provide a precise adjustment as well.
  • Refrigerator (1) comprise a fresh food compartment (2) to preserve food, a freezer compartment (3) to store food by freezing, a temperature control mechanism (4) to adjust the temperature of the freezer (3) and fresh food (2) compartments.
  • the temperature control mechanism (4) comprises a thermostat (5) which adjusts the temperature of the fresh food compartment (1), an air passage opening (6) to ensure air passage between the freezer (3) and fresh food (2) compartments, a shutter valve (8) to adjust the air passage opening (6) according to the desired air flow, a thermostat holder (7) that accomodates the thermostat (5) and the said shutter valve (8), an adjustment button (9) for the rotation of the shutter valve (8) at the same time with regulating thermostat (5), a shaft bed (13) located at the centre of the adjustment button (9), a shutter valve shaft (12) to transmit the motion taken from the shaft bed (13) to the shutter, a thermostat shaft (11) to transmit the motion generated by the shutter shaft (12) to the thermostat (5).
  • the circular motion generated by the adjustment button (9) is transmitted without using any auxiliary transmission means to the shaft bed (13) placed on the same axis from the said shaft bed (13) to shutter valve shaft (12) and from this latter to thermostat shaft (11).
  • the shutter valve (8) is in the form of a helical cam to adjust the air passage opening (6) to a desired size.
  • the shutter valve (8) comprises a slit (10) which ensures a limited amount of air from the freezer compartment (3) to the fresh food compartment (2) when the refrigerator needs to consume less power for instance in the vacation mode.
  • shutter valve (8) While the shutter valve (8) is turned via the adjustment button (9) to adjust to the highest allowable temperature degree of the fresh food compartment (2) in vacation mode, the thermostat (5) is adjusted to the minimum position to allow minimum cooling. In this position shutter valve (8) completely closes the air passage opening (6), by means of the slit (10) minimum amount of air passes through the fresh food compartment (2) from the freezer compartment (3). ( Figure 3 ).
  • the shutter valve (8) is rotated via adjustment button (9) to allow maximum air flow from the freezer compartment (3) to the fresh food compartment (2) which makes the air passage opening (6) fully opened, while at the same time the thermostat (5) is adjusted to a value that enables the cooling close to maximum ( Figure 5 ).
  • the temperature control mechanism (4) comprises a motion transmission element (14) to locate the thermostat (5) and the shutter valve (8) at distinct places inside the refrigerator (1) to control the performance of the thermostat (5) and the shutter valve (8) from a single point and to transmit the motion created by the adjustment button (9) to shutter valve (8) by connecting the shaft bed (13) which transmits the motion direct to the thermostat shaft (11) in the same time to the shutter valve shaft (12) ( Figure 8 ).
  • Adjustment of the thermostat (5) and air flow from the freezer compartment (3) to the fresh food compartment (2) from a single point provides easiness and low cost wise manufacturing process.
  • the special form of the shutter valve (8) allows a precise adjustment of the air flow.
  • the temperature control mechanism (4) provides the refrigerator to operate efficiently in vacation mode or in fast freezing positions.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Memory System Of A Hierarchy Structure (AREA)
  • Control Of Temperature (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The present invention is related to a temperature control mechanism (4) that provides the control of the thermostat (5) and the air flow by means of an adjustment button (9) at a single point and simultaneously in order to precisely adjust the temperature of the freezer compartment (3) and fresh food compartment (2) by the user.

Description

  • The present invention is concerned with a temperature control mechanism used in controlling temperature in preferably two compartment refrigerators.
  • In refrigerators with fresh food compartment and a freezer compartment, various methods of control are used to secure that such freezer and fresh food compartments remain at desired temperature ranges. In refrigerators where the desired temperature is provided by distributing cool air between various compartments, working periods of the compressor are adjusted in accordance with temperature sensed through thermostatic control device in fresh food compartment or freezer compartment and shutters, mechanic shutter, lids, gates and similar mechanisms are used to adjust air flow by reducing or widening the passage opening between the compartments. In general, adjustment of air passage opening between compartments is carried out by means of thermostatic control at distinct points. In the state-of-the art, there are also refrigerators where the control of air flow and the thermostat is effected from a same point but in such refrigerators additional connection elements located between the adjustment button and shutters to shut air passage opening as well as adjusting the same simultaneously are used. Furthermore, even if the adjustment of both thermostat and of air flow is carried out at the same point to ensure precise in adjustment, shutters are to be regulated by means of a second check.
  • In the US patent 3630046 , the air flow duct between the freezer and fresh food compartments and damper which is opened or shut by an adjustment button is controlled and the thermostat adjustment is provided by a separate button.
  • In the US patent 3656314 , air flow is regulated by means of a shutter in the form of letter L located into air passage opening. Control of the shutter and thermostat is ensured at distinct points.
  • In the US patent 3866437 , air flow is controlled by means of a shutter having the form of letter T located inside the air passage opening. The shutter and thermostat control is carried out at distinct points.
  • Another temperature control mechanism is known from US 4009590 .
  • In the US patent 4296611 , shutters located into the air passage way have been divided into two groups at the side of freezer and that of fresh food compartment and opening and closing of dampers and adjusting the thermostat is possible by a single button simultaneously. Connection means between the dampers set at the side of the fresh food compartment and control button exist in the mechanism and a separate adjustment button for dampers is provided at the side of the freezer compartment.
  • The object of the present invention is to provide a single temperature control mechanism both to provide a thermostat control to adjust the temperature of the freezer and fresh food compartment and to control the air flow between those compartments and also to provide a precise adjustment as well.
  • Temperature control mechanism realized to attain the object of this invention has been shown in drawings attached herewith, where:
    • Figure 1 is a schematic view of a refrigerator.
    • Figure 2 is an exploded view of a temperature control mechanism.
    • Figure 3 is a schematic fully covered view of a temperature control mechanism.
    • Figure 4 is a schematic half opened view of a temperature control mechanism.
    • Figure 5 is a schematic fully opened view of a temperature control mechanism.
    • Figure 6 is a schematic view of a temperature control mechanism in fast freezing position.
    • Figure 7 is a sectional view of a temperature control mechanism mounted on a refrigerator.
    • Figure 8 is a schematic view of a temperature control mechanism comprising a motion transmission means.
  • Parts shown in the drawings numbered one by one as follows :
    1. 1. Refrigerator
    2. 2. Fresh food compartment
    3. 3. Freezer compartment
    4. 4. Temperature control mechanism
    5. 5. Thermostat
    6. 6. Air passage opening
    7. 7. Thermostat holder
    8. 8. Shutter valve
    9. 9. Adjustment button
    10. 10. Slit
    11. 11. Thermostat shaft
    12. 12. Shutter valve shaft
    13. 13. Shaft bed
    14. 14. Motion transmission means.
  • Refrigerator (1) comprise a fresh food compartment (2) to preserve food, a freezer compartment (3) to store food by freezing, a temperature control mechanism (4) to adjust the temperature of the freezer (3) and fresh food (2) compartments.
  • The temperature control mechanism (4) comprises a thermostat (5) which adjusts the temperature of the fresh food compartment (1), an air passage opening (6) to ensure air passage between the freezer (3) and fresh food (2) compartments, a shutter valve (8) to adjust the air passage opening (6) according to the desired air flow, a thermostat holder (7) that accomodates the thermostat (5) and the said shutter valve (8), an adjustment button (9) for the rotation of the shutter valve (8) at the same time with regulating thermostat (5), a shaft bed (13) located at the centre of the adjustment button (9), a shutter valve shaft (12) to transmit the motion taken from the shaft bed (13) to the shutter, a thermostat shaft (11) to transmit the motion generated by the shutter shaft (12) to the thermostat (5).
  • The circular motion generated by the adjustment button (9) is transmitted without using any auxiliary transmission means to the shaft bed (13) placed on the same axis from the said shaft bed (13) to shutter valve shaft (12) and from this latter to thermostat shaft (11).
  • While rotating, the shutter valve (8) is in the form of a helical cam to adjust the air passage opening (6) to a desired size.
  • The shutter valve (8) comprises a slit (10) which ensures a limited amount of air from the freezer compartment (3) to the fresh food compartment (2) when the refrigerator needs to consume less power for instance in the vacation mode.
  • While the shutter valve (8) is turned via the adjustment button (9) to adjust to the highest allowable temperature degree of the fresh food compartment (2) in vacation mode, the thermostat (5) is adjusted to the minimum position to allow minimum cooling. In this position shutter valve (8) completely closes the air passage opening (6), by means of the slit (10) minimum amount of air passes through the fresh food compartment (2) from the freezer compartment (3). (Figure 3).
  • For adjusting fresh food compartment (2) to the lowest allowable temperature value, the shutter valve (8) is rotated via adjustment button (9) to allow maximum air flow from the freezer compartment (3) to the fresh food compartment (2) which makes the air passage opening (6) fully opened, while at the same time the thermostat (5) is adjusted to a value that enables the cooling close to maximum (Figure 5).
  • When in the freezer compartment (3) fast freezing is to be performed while the thermostat (5) is adjusted to a threshold value to ensure maximum cooling, at the same time the shutter valve (8) is positioned to partially close air passage opening (6) to ensure fast cooling of the freezer compartment (3) and thus to prevent food that are present in the fresh food compartment (2) to be frozen due to the decrease of temperature in the fresh food compartment more then desired. (Figure 6).
  • In another embodiment of the invention, the temperature control mechanism (4) comprises a motion transmission element (14) to locate the thermostat (5) and the shutter valve (8) at distinct places inside the refrigerator (1) to control the performance of the thermostat (5) and the shutter valve (8) from a single point and to transmit the motion created by the adjustment button (9) to shutter valve (8) by connecting the shaft bed (13) which transmits the motion direct to the thermostat shaft (11) in the same time to the shutter valve shaft (12) (Figure 8).
  • Adjustment of the thermostat (5) and air flow from the freezer compartment (3) to the fresh food compartment (2) from a single point provides easiness and low cost wise manufacturing process. On the other hand, the special form of the shutter valve (8) allows a precise adjustment of the air flow.
  • The temperature control mechanism (4) according to this invention provides the refrigerator to operate efficiently in vacation mode or in fast freezing positions.

Claims (5)

  1. A refrigerator (1) comprising a fresh food compartment (2), a freezer compartment (3) and a temperature control mechanism (4), said temperature control mechanism (4) comprises a thermostat (5) to provide adjustment of temperature in the fresh food compartment (2), an air passage opening (6) to provide air passage between the freezer (3) and fresh food (2) compartments, a shutter valve (8) to adjust the air passage opening (6) according to a desired air flow, a thermostat holder (7) to accommodate the thermostat (5) and the shutter valve (8), an adjustment button (9) to rotate the shutter valve (8) with the thermostat (5), a shaft bed (13) located at the centre of the adjustment button (9), a shutter valve shaft (12) to transmit the motion from shaft bed (13) to the shutter valve (8) and a thermostat shaft (11) to transmit the motion generated by the shutter valve shaft (12) to the thermostat (5) said temperature control mechanism (4) being characterized in that the shutter valve (8) is in the form of a helical cam to adjust the air passage opening (6) to a desired size while a circular motion is performed around a centre.
  2. A refrigerator (1) as in claim 1, characterized in that the circular motion generated by the adjustment button (9) is transmitted to shaft bed (13) situated on the same axis from the said shaft bed (13) to shutter valve shaft (12) and from this latter to the thermostat shaft (11), without using any auxiliary transmission means.
  3. A refrigerator (1) as in claim 1, characterized in that the shutter valve (8) comprises a slit (10) which ensures a limited amount of air from the freezer compartment (3) to the fresh food compartment (2) when the refrigerator (1) needs to consume less power as when in vacation mode.
  4. A refrigerator (1) as in claim 1, characterized in that when fast freezing is required in the freezer compartment (3), the thermostat (5) is adjusted to a threshold value for maximum cooling, in the same time, the shutter valve (8) is positioned to partially close air passage opening (6) for fast cooling in the freezer compartment (3) and thus to prevent food present in the fresh food compartment (2) to be frozen as a result of decreased temperature in the fresh food compartment (2) unnecessarily.
  5. A refrigerator (1) as in claim 1, characterized in that the temperature control mechanism (4) comprises a motion transmission means (14), to accommodate the thermostat (5) and the shutter (8) control of the at distinct places inside the refrigerator (1) to provide performance of the thermostat (5) and the shutter valve (8) from a single point and to transmit the motion created by the adjustment button (9) to shutter valve (8) by connecting the shaft bed (13) which transmits the motion direct to the thermostat shaft (11) in the same time to the shutter valve shaft (12)
EP03776170A 2002-09-30 2003-09-25 Temperature control mechanism Expired - Lifetime EP1549891B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
TR200202265 2002-09-30
TR200202265 2002-09-30
PCT/TR2003/000078 WO2004029527A2 (en) 2002-09-30 2003-09-25 Temperature control mechanism

Publications (2)

Publication Number Publication Date
EP1549891A2 EP1549891A2 (en) 2005-07-06
EP1549891B1 true EP1549891B1 (en) 2009-11-25

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ID=32041161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03776170A Expired - Lifetime EP1549891B1 (en) 2002-09-30 2003-09-25 Temperature control mechanism

Country Status (7)

Country Link
EP (1) EP1549891B1 (en)
AT (1) ATE449942T1 (en)
AU (1) AU2003283948A1 (en)
DE (1) DE60330260D1 (en)
ES (1) ES2334564T3 (en)
TR (1) TR200502091T1 (en)
WO (1) WO2004029527A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1834139A1 (en) * 2005-01-03 2007-09-19 Arçelik Anonim Sirketi A cooling device
DE102006005548A1 (en) * 2006-02-07 2007-08-09 BSH Bosch und Siemens Hausgeräte GmbH Recirculation refrigeration unit with nozzle
MX2007016337A (en) 2007-12-18 2009-06-18 Mabe Sa De Cv Damper.
CN106679322B (en) * 2016-12-22 2019-05-31 青岛海尔股份有限公司 The method that mechanical knob controls refrigerator operation

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1104348A (en) * 1965-07-21 1968-02-21 British Thermostat Co Ltd Improvements in thermostatically-operated means for controlling temperature in refrigerators
US3630046A (en) 1970-02-02 1971-12-28 Gen Motors Corp Damper control
US3656314A (en) 1970-07-10 1972-04-18 Westinghouse Electric Corp Control apparatus for a two temperature refrigerator
US3866437A (en) 1973-09-10 1975-02-18 Westinghouse Electric Corp Adjustable damper control mechanism
US3908392A (en) * 1974-10-30 1975-09-30 Gen Electric Dual control coordinating apparatus for a refrigerator
US4009591A (en) * 1976-01-02 1977-03-01 General Electric Company Single evaporator, single fan combination refrigerator with independent temperature controls
US4009590A (en) * 1976-01-02 1977-03-01 General Electric Company Single evaporator, single fan combination refrigrator with independent temperature controls
US4296611A (en) 1978-12-08 1981-10-27 General Electric Company Household refrigerator air flow control and method
DE3324623A1 (en) * 1982-07-12 1984-01-12 Gold Star Co COOLING DEVICE WITH A LOCKABLE REFRIGERATOR
US4920758A (en) * 1988-07-18 1990-05-01 Whirlpool Corporation Refrigerator temperature responsive air outlet baffle
IT1225121B (en) * 1988-07-27 1990-11-02 Zanussi A Spa Industrie REFRIGERATION TEMPERATURE ADJUSTMENT DEVICE FOR REFRIGERANT EQUIPMENT.
US6094932A (en) * 1999-01-28 2000-08-01 Camco Inc. Refrigerator air flow diffuser assembly

Also Published As

Publication number Publication date
ATE449942T1 (en) 2009-12-15
WO2004029527A3 (en) 2004-04-29
AU2003283948A1 (en) 2004-04-19
TR200502091T1 (en) 2007-01-22
WO2004029527A2 (en) 2004-04-08
ES2334564T3 (en) 2010-03-12
EP1549891A2 (en) 2005-07-06
DE60330260D1 (en) 2010-01-07

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