EP1749174A1 - A cooling device and a control method thereof - Google Patents

A cooling device and a control method thereof

Info

Publication number
EP1749174A1
EP1749174A1 EP05740442A EP05740442A EP1749174A1 EP 1749174 A1 EP1749174 A1 EP 1749174A1 EP 05740442 A EP05740442 A EP 05740442A EP 05740442 A EP05740442 A EP 05740442A EP 1749174 A1 EP1749174 A1 EP 1749174A1
Authority
EP
European Patent Office
Prior art keywords
ionizer
door
fan
operating
cooling device
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.)
Granted
Application number
EP05740442A
Other languages
German (de)
French (fr)
Other versions
EP1749174B1 (en
Inventor
Emre Arisoy
Cemil Inan
Birol Konak
Dincer Ahmet
Hande Guclu
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
Priority to PL05740442T priority Critical patent/PL1749174T3/en
Publication of EP1749174A1 publication Critical patent/EP1749174A1/en
Application granted granted Critical
Publication of EP1749174B1 publication Critical patent/EP1749174B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • F25D2317/041—Treating air flowing to refrigeration compartments by purification
    • 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
    • F25D2700/02—Sensors detecting door opening

Definitions

  • This invention relates to a cooling device and a control method thereof wherein means are provided for sterilizing by removing microorganisms in order to prevent the foodstuff placed thereinside from spoiling.
  • various ionizers are utilized in order for foods to be preserved in a more sterile medium purified from microorganisms by removing microorganisms in the surroundings of the cooling device or on foods placed inside the cooling device as much as possible from the interior of the cooling and / or freezing compartments where foods are preserved.
  • Ionizer is simply a device comprising a high voltage generator and at least one electrode connected to the said high voltage generator. It is a device wherein the amount of ions in the environment is increased by ionizing the air around the electrode as a result of the high voltage applied to the mentioned electrode by the high voltage generator and, microorganisms in the environment are destroyed as they are surrounded by afore-mentioned ions.
  • ionizers are utilized to remove microorganisms (bacteria, virus, microbe etc.) out of the cooling device, which microorganisms are located on the foods placed inside and / or enter inside as the door of the cooling compartment or freezing compartment is opened and which shorten the preservation period of the foodstuff placed inside and cause the generation of bad odour as a result of the spoiling of said foodstuff.
  • Ionizers are also frequently utilized, particularly in air conditioners.
  • the object of the present invention is the realization of a cooling device and a control method thereof wherein means are provided for removing microorganisms and sterilizing, in order to prevent the foodstuff placed thereinside from spoiling.
  • Fig.1 - is a schematic view of a cooling device.
  • Fig.2 - is the flow chart of a control method of a cooling device.
  • Cooling device 1. Compartment 3. Compressor 4. Evaporator 5. Fan 6. Ionizer 7. Electrode 8. Door 9. Display 10. Input device 11. Control card 12. Air return duct
  • the cooling device (1) comprises a compressor (3) used to circulate the refrigerant in the refrigeration cycle by compressing, one or more than one compartment (2) where foods are placed inside in order to be cooled and / or frozen, at least one door (8) whereby the user can reach inside, an evaporator (4) whereby heat transfer between the refrigerant and the environment is achieved, an ionizer (6), comprising a high voltage generator and at least one electrode (7) connected to the said high voltage generator, which (6) is utilized to increase the amount of negative ions by ionizing the air around the electrode (7) as a result of the high voltage applied to the mentioned electrode (7) by the high voltage generator wherein microorganisms inside the air are destroyed as they are surrounded by the said negative ions, an air return duct (12) with one of its ends communicating with the compartment (2) and the other end communicating with a volume including the evaporator (4), wherein the ionizer (6) is positioned before the evaporator (4) with respect
  • microorganisms which are surrounded by negative ions and stick onto the evaporator (4) are removed to the outside of the cooling device (1) through a defrost procedure.
  • the ionizer (6) incorporates a, preferably 5000 - 10000 DC V, high voltage generator which is supplied by the network voltage and which increases the network voltage and, an electrode (7) with one of its ends opening to the air return duct (12), preferably in a form with a cylindrical or needle end, connected to the outlet of the said high voltage generator.
  • a high voltage generator which is supplied by the network voltage and which increases the network voltage
  • an electrode (7) with one of its ends opening to the air return duct (12), preferably in a form with a cylindrical or needle end, connected to the outlet of the said high voltage generator.
  • heat transfer occurs between the cold air which is cooled by means of the evaporator (4) and transferred into the compartment (2) by being blown by the fan (5) and the foodstuff placed inside the compartment (2) and, the air that is warmed as foods are cooled leaves the compartment (2) and enters the air return duct (12).
  • the suction of the fan (5) the air passing over the foods and containing microorganisms passes over the electrode (7) positioned inside the air return duct (12).
  • the ionizer (6) operates, as a result of high voltage, an electric field is generated between the electrode (7) and the air around it and therefore, molecules inside the air (water etc.) dissociate into their ions and the amount of negative ions is increased in the air return duct (12) where the electrode (7) is placed.
  • said negative ions generated inside the air return duct (12) causes them either to die due to lack of air or to become heavier and precipitate.
  • the evaporator (4) functions as a trap for the said microorganisms and that the air that is cooled again on the said evaporator (4) is blown into the compartment (2) after it is cleaned.
  • the frost layer which accumulates on the evaporator (4) and contains microorganisms surrounded by negative ions is then discharged to the outside of the cooling device (1) through a defrost procedure. Thereby, it is accomplished that microorganisms be captured in the air return duct (12) which obviously is a volume outside the compartment (2).
  • the cooling device (1) comprises one or more than one input device (10) enabling the user to enter data and, a control card (11) used to control the ionizer (6) to operate with respect to the data entered through the input device (10). If large amounts of foods are loaded into the cooling device (1) and / or odorous foods are placed, the user may utilize the input device (10) to transfer time data to the control card (11) so as to change the operation intervals and operation period of the ionizer (6) enabling the control card (11) to activate the ionizer (6) with respect to the said periods. Thereby, it is achieved that the user may operate the ionizer (6) more frequently for a longer period of time.
  • f DOO _ON/OFF is the number of the o rpening o / closing o of the compartment (2) door (8) by the user.
  • n is the number of opening / closing of the compartment (2) door (8) necessary to operate the ionizer (6), determined by the manufacturer.
  • t is the predetermined maximum waiting time for the ionizer (6) to restart.
  • t ION_MIN is the predetermined minimum waiting time for the ionizer (6) to restart.
  • [025] t is the predetermined operation period of the ionizer (6).
  • t IONJNPUT is the o spreration c period of the ionizer ( ⁇ 6) determined by J the user.
  • t is the minimum waiting time for the ionizer (6) to restart, determined ION_INPUT_MIN by the user.
  • the input device (10) is positioned on the cooling device (1) and, as data is entered by means of the input device (10), through the control card (11), it is achieved that the ionizer (6) operates for a period (t ) which is preferably longer than the predetermined o r peration r period (t ION ) and, that the minimum waiting ⁇ time (t IONJNPUTJvlI ) for the ionizer (6) to restart is preferably shorter than the predetermined minimum waiting time (t IO vMN ).
  • the cooling device (1) comprises a display (9) which gets active when the ionizer (6) is activated. Thereby, whether the ionizer (6) is operating or not is shown to the user.
  • a control method is developed for both sterilizing the cooling device (1) in a most efficient manner and for minimizing the energy consumption by effectively operating the ionizer (6).
  • cooling device (1) By means of the cooling device (1), object of the present invention, by removing the microorganisms inside the cooling device (1) to the outside of the cooling device (1), it is achieved that foods are cooled in a sterile medium, for a longer period without spoiling.

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)
  • Freezing, Cooling And Drying Of Foods (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)

Abstract

This invention relates to a cooling device (1) and a control method thereof wherein means are provided for sterilizing by removing microorganisms in order to prevent the foodstuff placed thereinside from spoiling.

Description

Description A COOLING DEVICE AND A CONTROL METHOD THEREOF
[001] This invention relates to a cooling device and a control method thereof wherein means are provided for sterilizing by removing microorganisms in order to prevent the foodstuff placed thereinside from spoiling.
[002] Foods left open are the most suitable media where microorganisms can live and reproduce. If proper cautions are not considered during preservation of foods, said microorganisms reproduce rapidly and cause foods to spoil and, as a result of spoiling bad odour is generated. Preserving foods in cooling devices makes the food to spoil in a longer period of time; however, still it is not possible to completely destroy the microorganisms that cause the mentioned spoiling. For that reason, in cooling devices, various ionizers are utilized in order for foods to be preserved in a more sterile medium purified from microorganisms by removing microorganisms in the surroundings of the cooling device or on foods placed inside the cooling device as much as possible from the interior of the cooling and / or freezing compartments where foods are preserved.
[003] Ionizer is simply a device comprising a high voltage generator and at least one electrode connected to the said high voltage generator. It is a device wherein the amount of ions in the environment is increased by ionizing the air around the electrode as a result of the high voltage applied to the mentioned electrode by the high voltage generator and, microorganisms in the environment are destroyed as they are surrounded by afore-mentioned ions.
[004] In cooling devices, ionizers are utilized to remove microorganisms (bacteria, virus, microbe etc.) out of the cooling device, which microorganisms are located on the foods placed inside and / or enter inside as the door of the cooling compartment or freezing compartment is opened and which shorten the preservation period of the foodstuff placed inside and cause the generation of bad odour as a result of the spoiling of said foodstuff. Ionizers are also frequently utilized, particularly in air conditioners.
[005] In the current state of the art, in the Switzerland Patent Document CH 618346, a description is given of an ionizer located inside a cooling device to enhance the sterilizing effect, whereby it is achieved to increase the amount of negative ions in the air by applying high voltage to the electrodes.
[006] In the current state of the art, in the German Patent Document DE 3105886, a description is given of an ionizer which is positioned in the air duct and is supplied with high voltage.
[007] In the current state of the art, in the Japanese Patent Document JP 5149671, a description is given of a deodorizer which consists of an ion generator that is activated and deactivated with respect to the frequency of the opening and closing of the door of the cooling device.
[008] In the current state of the art, in the Japanese Patent Document JP 11347111 , a description is given of an application wherein an ionizer the operation of which is controlled by means of an ion sensor and a fan are active when foods are placed to a special compartment where said ionizer is located and, the ionizer is activated periodically in order to reduce energy consumption.
[009] The object of the present invention is the realization of a cooling device and a control method thereof wherein means are provided for removing microorganisms and sterilizing, in order to prevent the foodstuff placed thereinside from spoiling.
[010] The cooling device designed to fulfill the objectives of the present invention is illustrated in the attached figures where:
[011] Fig.1 - is a schematic view of a cooling device.
[012] Fig.2 - is the flow chart of a control method of a cooling device.
[013] Parts shown in figures are numbered as follows: 1. Cooling device 2. Compartment 3. Compressor 4. Evaporator 5. Fan 6. Ionizer 7. Electrode 8. Door 9. Display 10. Input device 11. Control card 12. Air return duct
[014] The cooling device (1), the object of the present invention, comprises a compressor (3) used to circulate the refrigerant in the refrigeration cycle by compressing, one or more than one compartment (2) where foods are placed inside in order to be cooled and / or frozen, at least one door (8) whereby the user can reach inside, an evaporator (4) whereby heat transfer between the refrigerant and the environment is achieved, an ionizer (6), comprising a high voltage generator and at least one electrode (7) connected to the said high voltage generator, which (6) is utilized to increase the amount of negative ions by ionizing the air around the electrode (7) as a result of the high voltage applied to the mentioned electrode (7) by the high voltage generator wherein microorganisms inside the air are destroyed as they are surrounded by the said negative ions, an air return duct (12) with one of its ends communicating with the compartment (2) and the other end communicating with a volume including the evaporator (4), wherein the ionizer (6) is positioned before the evaporator (4) with respect to the direction of the air flow and whereby the air, containing microorganisms is sucked, air is warmed as foods are cooled because of the heat transfer between the cold air blown into the compartment (2) and the items placed inside the said compartment (2) and, a fan (5) whereby moist warm air and the microorganisms that pass over the ionizer (6) and are captured by negative ions generated are directly routed onto the evaporator (4) wherein said microorganisms are prevented from returning to the interior of the compartment (2) (Figure 1).
[015] In the preferred embodiment of the present invention, microorganisms which are surrounded by negative ions and stick onto the evaporator (4) are removed to the outside of the cooling device (1) through a defrost procedure.
[016] The ionizer (6) incorporates a, preferably 5000 - 10000 DC V, high voltage generator which is supplied by the network voltage and which increases the network voltage and, an electrode (7) with one of its ends opening to the air return duct (12), preferably in a form with a cylindrical or needle end, connected to the outlet of the said high voltage generator. When high voltage is applied to the electrode (7), air molecules around the electrode (7) are ionized and the amount of the negative ions in the environment is increased.
[017] In the preferred embodiment of the present invention, heat transfer occurs between the cold air which is cooled by means of the evaporator (4) and transferred into the compartment (2) by being blown by the fan (5) and the foodstuff placed inside the compartment (2) and, the air that is warmed as foods are cooled leaves the compartment (2) and enters the air return duct (12). As a result of the suction of the fan (5), the air passing over the foods and containing microorganisms passes over the electrode (7) positioned inside the air return duct (12). As the ionizer (6) operates, as a result of high voltage, an electric field is generated between the electrode (7) and the air around it and therefore, molecules inside the air (water etc.) dissociate into their ions and the amount of negative ions is increased in the air return duct (12) where the electrode (7) is placed. As a result, by surrounding the microorganisms inside the compartment (2) which are transferred to the air return duct (12) through the air current, said negative ions generated inside the air return duct (12) causes them either to die due to lack of air or to become heavier and precipitate.
[018] In the afore-mentioned application, microorganisms surrounded by negative ions drift with the air flow velocity towards the evaporator (4) by passing through the air return duct (12). Moist warm air that returns from the compartment (2) after cooling the foods is cooled again in the vicinity of the evaporator (4) and during this procedure, moist air thermally sticks to the surface of the evaporator (4) whereas microorganisms surrounded by negative ions stick electrically because the evaporator (4) is neutral. The moist air and microorganisms surrounded by negative ions that stick to the evaporator (4) freeze and, a frost layer is formed on the evaporator (4). Thereby since the microorganisms inside the compartment (2) stick onto the evaporator (4), it is achieved that the evaporator (4) functions as a trap for the said microorganisms and that the air that is cooled again on the said evaporator (4) is blown into the compartment (2) after it is cleaned. The frost layer which accumulates on the evaporator (4) and contains microorganisms surrounded by negative ions is then discharged to the outside of the cooling device (1) through a defrost procedure. Thereby, it is accomplished that microorganisms be captured in the air return duct (12) which obviously is a volume outside the compartment (2).
[019] In the preferred embodiment of the present invention, the cooling device (1) comprises one or more than one input device (10) enabling the user to enter data and, a control card (11) used to control the ionizer (6) to operate with respect to the data entered through the input device (10). If large amounts of foods are loaded into the cooling device (1) and / or odorous foods are placed, the user may utilize the input device (10) to transfer time data to the control card (11) so as to change the operation intervals and operation period of the ionizer (6) enabling the control card (11) to activate the ionizer (6) with respect to the said periods. Thereby, it is achieved that the user may operate the ionizer (6) more frequently for a longer period of time.
[020] To be able to describe the control method of a cooling device (1) the object of the present invention, following symbols are utilized :
[021] f DOO _ON/OFF : is the number of the o rpening o / closing o of the compartment (2) door (8) by the user. [022] n : is the number of opening / closing of the compartment (2) door (8) necessary to operate the ionizer (6), determined by the manufacturer. [023] t : is the predetermined maximum waiting time for the ionizer (6) to restart.
[024] t ION_MIN : is the predetermined minimum waiting time for the ionizer (6) to restart.
[025] t : is the predetermined operation period of the ionizer (6).
[026] t IONJNPUT : is the o spreration c period of the ionizer ( \6) determined by J the user.
[027] t : is the minimum waiting time for the ionizer (6) to restart, determined ION_INPUT_MIN by the user. [028] The input device (10) is positioned on the cooling device (1) and, as data is entered by means of the input device (10), through the control card (11), it is achieved that the ionizer (6) operates for a period (t ) which is preferably longer than the predetermined o rperation r period (t ION ) and, that the minimum waiting σ time (t IONJNPUTJvlI ) for the ionizer (6) to restart is preferably shorter than the predetermined minimum waiting time (t IO vMN ). As the periods (t IONJNPUT ) and (t IONJNPUTJWIN ) in this application started to be measured at the instant data entered may be the r periods (t ION ) and (t ION_MIN ) determined by the manufacturer, they may also be periods changed by the user by means of the input device (10). [029] In the preferred embodiment of the present invention, the cooling device (1) comprises a display (9) which gets active when the ionizer (6) is activated. Thereby, whether the ionizer (6) is operating or not is shown to the user. [030] A control method is developed for both sterilizing the cooling device (1) in a most efficient manner and for minimizing the energy consumption by effectively operating the ionizer (6). [031] In the control method of the present invention, it is achieved that both energy is saved and the internal volume of the cooling device (1) is sterilized in a most effective manner by operating the ionizer (6) for certain periods of time determined with respect to the number of opening / closing of the compartment (2) door (8) and to the operation of the fan (5). [032] In the control method of the present invention, if the fan (5) is not operating, the ionizer (6) ' does not operate even when the minimum waiting ° time (t IONJvlIN ) for the ionizer (6) to restart or the maximum waiting ° time (t IONJvIAX ) for the ionizer (6) to restart are completed (Figure 2). [033] The cooling device (1) is operated with a control method comprising following steps; • Measure the number (f DOOR_ON/OFF ) of o rpening / closing ° of the com rpartment (2) door (8) by the user during the minimum waiting time (t IONJVIIN ) for the ionizer (6) to restart (101) and compare the number (f ) of opening / closing of the door (8) with the predetermined number (n) of the opening / closing (102), • If the number (f DOORJDN/OFF ) of o cpening ° / closing ° of the door (8) during ° the minimum waiting time (t IONJVIIN ) for the ionizer (6) to restart is equal to or smaller than the predetermined number (n) of the opening / closing (f =< n), meaning that the door (8) is opened and closed at infrequent DOOR_ON/OFF intervals, decide to operate the ionizer (6) at the end of the predetermined maximum waiting ° time (t IONJvIAX ) of the ionizer (6) (103), • If the number (f DOOR.ON/OFF ) of o ^pening b / closing b of the door (8) is larg fc>er than the p rredetermined number (n) of the o rp-ening o / closing o (f D0OR_ON/OFF > n), meaning that the door (8) is opened and closed at frequent intervals, decide to operate the ionizer (6) at the end of the predetermined minimum waiting time (t IONJVIIN ) of the ionizer (6) (104), • Check whether the fan (5) is operating in order to apply the afore-mentioned steps (103 and 104) wherein decisions are given concerning the operation of the ionizer (6) (105), • If the fan (5) is not operating, wait until the fan (5) operates in order to apply the decisions concerning the operation of the ionizer (6) (106), • If the fan (5) is operating or after waiting until the fan (5) operates, operate the ionizer (6) for the predetermined operation period (t ) of the ionizer (6) as long as the fan (5) is operating (107), • At the same time, check whether the predetermined operation period (t ) of the ionizer (6) is completed (108), • If the predetermined operation period (t ) of the ionizer (6) is completed, stop the operation of the ionizer (6) (109), • If the predetermined operation period (t ) of the ionizer (6) is not completed, check whether the door (8) is opened and / or the fan (5) is operating during that time (110), • If the door (8) is not opened and / or the fan (5) does not stop, go back to the step (107) wherein the ionizer (6) is operated, • If the door (8) is opened and / or the fan (5) stops, stop the operation of the ionizer (6) (111), • Save the time of the operation of the ionizer (6) in the memory (112), • Check whether the door (8) is closed and the fan (5) is operating (113), • If the door (8) is not closed and the fan (5) is not operating, go back to the step (112) wherein the time of the operation of the ionizer (6) is saved in the memory, • If the door (8) is closed and the fan (5) is operating, go back to the step (107) wherein the ionizer (6) is operated.
[034] By means of the cooling device (1), object of the present invention, by removing the microorganisms inside the cooling device (1) to the outside of the cooling device (1), it is achieved that foods are cooled in a sterile medium, for a longer period without spoiling.
[035]

Claims

Claims
[001] A cooling device (1) comprising; a compressor (3) used to circulate the refrigerant in the refrigeration cycle by compressing; one or more than one compartment (2) where foods are placed inside in order to be cooled and / or frozen; at least one door (8) whereby the user can reach inside; an evaporator (4) whereby heat transfer between the refrigerant and the environment is achieved; an ionizer (6), comprising a high voltage generator and at least one electrode (7) connected to the said high voltage generator, which (6) is utilized to increase the amount of negative ions by ionizing the air around the electrode (7) as a result of the high voltage applied to the mentioned electrode (7) by the high voltage generator wherein microorganisms inside the air are destroyed as they are surrounded by the said negative ions and characterized by an air return duct (12) with one of its ends communicating with the compartment (2) and the other end communicating with a volume including the evaporator (4), wherein the ionizer (6) is positioned before the evaporator (4) with respect to the direction of the air flow and whereby air is sucked and, bya fan (5) whereby moist warm air and the microorganisms, which pass over the ionizer (6) and are captured by negative ions generated, are directly routed onto the evaporator (4) wherein said microorganisms are prevented from returning to the interior of the compartment (2).
[002] A cooling device (1) as described in Claim 1, wherein it is achieved that, if the fan (5) is not operating, the ionizer (6) does not operate even when the minimum waiting time (t IONJVIIN ) for the ionizer (6) to restart or the maximum waiting time (t IONJvIAX ) for the ionizer (6) to restart are completed.
[003] A cooling device (1) as described in Claims 1, 2, characterized by an ionizer (6) comprising one or more than one electrode (7) in cylindrical form.
[004] A cooling device (1) as described in Claims 1, 2, characterized by a input device (10) whereby the user may enter data concerning the operation intervals and operation period of the ionizer (6) according to the amount and type of the food loaded and, a control card (11) whereby the ionizer (6) is operated with respect to the mentioned operation intervals and operation periods entered.
[005] A cooling device (1) as described in Claims 1, 2, characterized by a display (9) which gets active as the ionizer (6) is activated, whereby whether the ionizer (6) is operating or not is shown to the user.
[006] A control method for a cooling device (1) as described in Claims 1 - 5, com rprising ° following σ ste rps; measure the number (f DOOR_ON/OFF ) of opening / closing of the compartment (2) door (8) by the user during the minimum waiting time (t IONJVIIN ) for the ionizer (6) to restart (101) ' and compare the number (f
DOOR DN/OFF ) of opening / closing of the door (8) with the predetermined number
(n) of the opening / closing (102); if the number (f ) of opening / closing ° of the door (8) during ° the minimum waiting ° time (t IONJVIIN ) for the ionizer
(6) to restart is equal to or smaller than the predetermined number (n) of the opening b / closing ° (f DOOR_ON/OFF =< n), meaning ° that the door ( \8) / is op rened and closed at infrequent intervals, decide to operate the ionizer (6) at the end of the predetermined maximum waiting time (t ) of the ionizer (6) (103); if the number (f DOOR_ON/OFF ) of op cening ° / closing ° of the door (8) is larg °er than the p rre- determined number (n) ' of the op fening b / closing to ( Vf DOOR_ON/OFF > n) ", meaning 6 that the door (8) is opened and closed at frequent intervals, decide to operate the ionizer (6) ' at the end of the p rredetermined minimum waiting ° time (t IONJVIIN ) of the ionizer (6) (104); check whether the fan (5) is operating in order to apply the afore-mentioned steps (103 and 104) wherein decisions are given concerning the operation of the ionizer (6) (105); if the fan (5) is not operating, wait until the fan (5) operates in order to apply the decisions concerning the operation of the ionizer (6) (106); if the fan (5) is operating or after waiting until the fan (5) operates, operate the ionizer (6) for the predetermined operation period (t ) of the ionizer (6) as long as the fan (5) is operating (107); at the same time, check whether the predetermined operation period (t ) of the ionizer (6) is completed (108); if the predetermined operation period (t ) of the ionizer (6) is completed, stop the operation of the ionizer (6) (109); if the predetermined operation period (t ) of the ionizer (6) is not completed, check whether the door (8) is opened and / or the fan (5) is operating during that time (110); if the door (8) is not opened and / or the fan (5) does not stop, go back to the step (107) wherein the ionizer (6) is operated; if the door (8) is opened and / or the fan (5) stops, stop the operation of the ionizer (6) (111); save the time of the operation of the ionizer (6) in the memory (112); check whether the door (8) is closed and the fan (5) is operating (113); if the door (8) is not closed and the fan (5) is not operating, go back to the step (112) wherein the time of the operation of the ionizer (6) is saved in the memory; if the door (8) is closed and the fan (5) is operating, go back to the step (107) wherein the ionizer (6) is operated.
EP05740442.8A 2004-05-25 2005-05-25 A cooling device and a control method thereof Active EP1749174B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05740442T PL1749174T3 (en) 2004-05-25 2005-05-25 A cooling device and a control method thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200401165 2004-05-25
PCT/IB2005/051699 WO2005116548A1 (en) 2004-05-25 2005-05-25 A cooling device and a control method thereof

Publications (2)

Publication Number Publication Date
EP1749174A1 true EP1749174A1 (en) 2007-02-07
EP1749174B1 EP1749174B1 (en) 2018-08-29

Family

ID=34968475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05740442.8A Active EP1749174B1 (en) 2004-05-25 2005-05-25 A cooling device and a control method thereof

Country Status (4)

Country Link
EP (1) EP1749174B1 (en)
PL (1) PL1749174T3 (en)
TR (1) TR200606460T1 (en)
WO (1) WO2005116548A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2460225A (en) * 2008-05-19 2009-11-25 Mao-Chuan Ko Cooling apparatus comprising a water dissociation unit, and method for defrosting
CN111380291B (en) * 2018-12-28 2022-03-25 海尔智家股份有限公司 Air-cooled refrigerator and sterilization method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002053993A1 (en) * 2000-12-27 2002-07-11 Sharp Kabushiki Kaisha Storage unit and refrigerator
JP2003042645A (en) * 2001-07-26 2003-02-13 Matsushita Refrig Co Ltd Refrigerator
JP2003294354A (en) * 2002-03-29 2003-10-15 Sanyo Electric Co Ltd Refrigerator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005116548A1 *

Also Published As

Publication number Publication date
PL1749174T3 (en) 2019-03-29
EP1749174B1 (en) 2018-08-29
TR200606460T1 (en) 2007-02-21
WO2005116548A1 (en) 2005-12-08

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