EP4063771A2 - A method of operating a cooling appliance - Google Patents

A method of operating a cooling appliance Download PDF

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Publication number
EP4063771A2
EP4063771A2 EP22158695.1A EP22158695A EP4063771A2 EP 4063771 A2 EP4063771 A2 EP 4063771A2 EP 22158695 A EP22158695 A EP 22158695A EP 4063771 A2 EP4063771 A2 EP 4063771A2
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EP
European Patent Office
Prior art keywords
evaporator
control unit
rpm
compressor
run time
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
EP22158695.1A
Other languages
German (de)
French (fr)
Other versions
EP4063771A3 (en
EP4063771B1 (en
Inventor
Huseyin CURA
Gokmen PEKER
Seren ATAKURU
Salman Mustafa HUSAIN
Tolga Nurettin AYNUR
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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Publication of EP4063771A2 publication Critical patent/EP4063771A2/en
Publication of EP4063771A3 publication Critical patent/EP4063771A3/en
Application granted granted Critical
Publication of EP4063771B1 publication Critical patent/EP4063771B1/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
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0251—Compressor control by controlling speed with on-off operation

Definitions

  • the present invention concerns a method of operating a cooling appliance.
  • Cooling devices having a relatively large inner volume are cooled by means of a refrigerant that is compressed by means of a compressor.
  • the refrigerant compression cycle at its simplest comprises a compressor, at least an evaporator, plurality of valves controlling the flow of the refrigerant, a condenser, and a capillary circulating refrigerant in a closed fluid cycle.
  • an evaporator is assigned to each of the compartments of the cooling appliance, meaning that to the fresh food compartment and the freezer compartment.
  • a solenoid valve is provided before the capillary to direct the flow of the refrigerant towards the evaporator of one of the said compartments.
  • a check valve component is used in the system at the outlet of the freezer compartment evaporator that allows unidirectional flow.
  • the refrigerant remains in the freezer evaporator after the freezer compartment operates.
  • the fluid is pumped out from the freezer evaporator to the condenser and the fluid is then collected in the condenser before the evaporator of the fresh food compartment operates.
  • the purpose of this process is to ensure that enough refrigerant flows into the Fresh food evaporator before the Fresh food compartment starts to be cooled.
  • the solenoid valve or simply known as check valve
  • the compressor is operated at high speed for a certain period of time to collect the fluid in the condenser.
  • a prior art publication in the technical field of the present invention may be referred to as KR100826179 among others, the document disclosing a cooling appliance and a controlling method thereof.
  • JP2012017881 A prior art publication in the technical field of the present invention may be referred to as JP2012017881 among others, the document disclosing a cooling appliance.
  • An aim of the present invention is to provide a method of operating a cooling appliance by means of which the operation parameters of the compressor such as time and revolutions per minute (rpm) can be adjusted to increase energy efficiency of the cooling appliance.
  • Another purpose of this invention is to provide optimum cooling both for the fresh food compartment and the freezer compartment.
  • Another aim of the present invention is to provide an energy efficient system operation ehich will be achieved by preventing the compressor from operating at high speed and time in case of low ambient temperature, usage and load, where the pump-out process is not turned off.
  • Another aim of the present invention is to optimize the cooling of the fresh food compartment by increasing the compressor cycle and operating time in pump-out operation at high ambient temperature, high usage, and high loads.
  • the present invention relates to a method of operating a cooling appliance comprising; providing a freezer compartment and a first evaporator configured to cool the freezer compartment upon activation, providing a fresh food compartment and a second evaporator configured to cool the fresh food compartment upon activation, providing a valve configured to direct the flow of the refrigerant towards the freezer evaporator or to the fresh food evaporator, providing a check valve on an outlet of the freezer evaporator, providing a condenser and a compressor, providing a control unit that activates or deactivates the first evaporator, the second evaporator, compressor and the valve.
  • the method of operating the cooling appliance further comprises the control unit that is configured to determine whether the second evaporator is activated after or before the first evaporator, and
  • the rpm values of "A”, “B”, “C”, “D”, “E” and “F” are between 2400-2100 rpm, 2100-1800 rpm, 1800-1500 rpm, 3000-2700 rpm, 2700-2400 rpm, 2400-2100 rpm respectively.
  • Another method of the present invention relates to a method of operating a cooling appliance comprising; providing a freezer compartment and a first evaporator configured to cool the freezer compartment upon activation, providing a fresh food compartment and a second evaporator configured to cool the fresh food compartment upon activation, providing a valve configured to direct the flow of the refrigerant towards the freezer evaporator or to the fresh food evaporator, providing a check valve on an outlet of the freezer evaporator, providing a condenser, providing a compressor which upon being activated pumps out the refrigerant towards the condenser, providing an ambient temperature sensor that measures the ambient temperature, providing a control unit that activates or deactivates the first evaporator, the second evaporator, compressor and the valve, and that the control unit receives the ambient temperature value from the temperature sensor.
  • control unit is configured to detect the ambient temperature
  • the rpm values of RPM1, RPM2, RPM3, RPM4, RPM5 and RPM6 are between 1200-1600 rpm, 1600-2000 rpm, 2000 -2400 rpm, 2400 -2800 rpm, 2800-3200 rpm, 3200-3600 rpm respectively.
  • the pump out times T1, T2, T3, T4, T5 and T6 are between 30-45, 45-60, 60-75, 75-90, 90-105 and 105-120 seconds respectively.
  • Another embodiment of the present invention relates to a method of operating a cooling appliance comprising;
  • control unit is configured to detect the ambient temperature
  • cooling appliance is responsive to outer environmental conditions such as temperature, load of the cooling appliance and/or the time the door of the cooling appliance remained open, thus improving the energy efficiency of the cooling appliance.

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  • 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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The present invention relates to a method of operating a cooling appliance comprising; providing a freezer compartment and a first evaporator configured to cool the freezer compartment upon activation, providing a fresh food compartment and a second evaporator configured to cool the fresh food compartment upon activation, providing a valve configured to direct the flow of the refrigerant towards the freezer evaporator or to the fresh food evaporator, providing a check valve on an outlet of the freezer evaporator, providing a condenser and a compressor, providing a control unit that activates or deactivates the first evaporator, the second evaporator, compressor and the valve.

Description

  • The present invention concerns a method of operating a cooling appliance.
  • Cooling devices having a relatively large inner volume are cooled by means of a refrigerant that is compressed by means of a compressor. The refrigerant compression cycle at its simplest comprises a compressor, at least an evaporator, plurality of valves controlling the flow of the refrigerant, a condenser, and a capillary circulating refrigerant in a closed fluid cycle. In the case of cooling appliances having parallel cooling, an evaporator is assigned to each of the compartments of the cooling appliance, meaning that to the fresh food compartment and the freezer compartment. Depending on the cooling needs of said compartments, a solenoid valve is provided before the capillary to direct the flow of the refrigerant towards the evaporator of one of the said compartments. By means of this, cooling needs of the compartments are separated thanks to the fully parallel cooling system and only one compartment can be cooled based on need. In parallel cooling systems as mentioned above and to meet the separate cooling requirements of the separate compartments, a check valve component is used in the system at the outlet of the freezer compartment evaporator that allows unidirectional flow. In parallel refrigerator systems, due to the working pressure difference between the fresh food evaporator and the freezer evaporator, the refrigerant remains in the freezer evaporator after the freezer compartment operates. Before cooling the fresh food compartment, the fluid is pumped out from the freezer evaporator to the condenser and the fluid is then collected in the condenser before the evaporator of the fresh food compartment operates. The purpose of this process is to ensure that enough refrigerant flows into the Fresh food evaporator before the Fresh food compartment starts to be cooled. In the pump-out process, the solenoid valve (or simply known as check valve) is turned off and the compressor is operated at high speed for a certain period of time to collect the fluid in the condenser.
  • A prior art publication in the technical field of the present invention may be referred to as KR100826179 among others, the document disclosing a cooling appliance and a controlling method thereof.
  • A prior art publication in the technical field of the present invention may be referred to as JP2012017881 among others, the document disclosing a cooling appliance.
  • An aim of the present invention is to provide a method of operating a cooling appliance by means of which the operation parameters of the compressor such as time and revolutions per minute (rpm) can be adjusted to increase energy efficiency of the cooling appliance. Another purpose of this invention is to provide optimum cooling both for the fresh food compartment and the freezer compartment.
  • Another aim of the present invention is to provide an energy efficient system operation ehich will be achieved by preventing the compressor from operating at high speed and time in case of low ambient temperature, usage and load, where the pump-out process is not turned off.
  • Another aim of the present invention is to optimize the cooling of the fresh food compartment
    by increasing the compressor cycle and operating time in pump-out operation at high ambient temperature, high usage, and high loads.
  • The present invention relates to a method of operating a cooling appliance comprising;
    providing a freezer compartment and a first evaporator configured to cool the freezer compartment upon activation, providing a fresh food compartment and a second evaporator configured to cool the fresh food compartment upon activation, providing a valve configured to direct the flow of the refrigerant towards the freezer evaporator or to the fresh food evaporator, providing a check valve on an outlet of the freezer evaporator, providing a condenser and a compressor, providing a control unit that activates or deactivates the first evaporator, the second evaporator, compressor and the valve.
  • In the preferred embodiment of the invention, the method of operating the cooling appliance further comprises the control unit that is configured to determine whether the second evaporator is activated after or before the first evaporator, and
    • if the second evaporator is activated after the first evaporator, the control unit measures last 5 run time of the first evaporator and if the average run time of the first evaporator is equal or less than %30, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of F, if the average run time of the freezer is between %30 to %50, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of E, if the average run time of the freezer is equal or greater than %50, activates the compressor to pump out the refrigerant towards the condenser at an rpm of D, or
    • if the second evaporator is activated before the first evaporator, the control unit measures last 5 run time of the first evaporator and if the average run time of the first evaporator is equal or less than %30, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of C, if the average run time of the first evaporator is between %30 to %50, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of B, if the average run time of the first evaporator is more than %50, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of A,
    • wherein A > B > C and D > E > F and wherein A is almost equal to F.
  • In the preferred embodiment of the invention, the rpm values of "A", "B", "C", "D", "E" and "F" are between 2400-2100 rpm, 2100-1800 rpm, 1800-1500 rpm, 3000-2700 rpm, 2700-2400 rpm, 2400-2100 rpm respectively.
  • Another method of the present invention relates to a method of operating a cooling appliance comprising;
    providing a freezer compartment and a first evaporator configured to cool the freezer compartment upon activation, providing a fresh food compartment and a second evaporator configured to cool the fresh food compartment upon activation, providing a valve configured to direct the flow of the refrigerant towards the freezer evaporator or to the fresh food evaporator, providing a check valve on an outlet of the freezer evaporator, providing a condenser, providing a compressor which upon being activated pumps out the refrigerant towards the condenser, providing an ambient temperature sensor that measures the ambient temperature, providing a control unit that activates or deactivates the first evaporator, the second evaporator, compressor and the valve, and that the control unit receives the ambient temperature value from the temperature sensor.
  • In another preferred embodiment of the invention, the control unit is configured to detect the ambient temperature, and
    • if the ambient temperature is less than 16 Celsius, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %20, the control unit activates the compressor to pump out the refrigerant towards the condenser for T2 seconds otherwise for T1 seconds, and if the second evaporator is to be activated after the first evaporator, the control unit activates the compressor at an rpm value RPM2, otherwise at an rpm value RPM1, or
    • if the ambient temperature is equal or greater than 16 Celsius but less than 25 Celsius, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %35 the control unit activates the compressor to pump out the refrigerant towards the condenser for T3 seconds otherwise for T2 seconds, and if the and if the second evaporator is to be activated after the first evaporator, the control unit activates the compressor at an rpm value RPM3, otherwise at an rpm value RPM2, or
    • if the ambient temperature is equal or greater than 25 Celsius but less than 32 Celsius, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %50 the control unit activates the compressor to pump out the refrigerant towards the condenser for T4 seconds otherwise for T3 seconds, and if the second evaporator is to be activated after the first evaporator, the control unit activates the compressor at an rpm value RPM4, otherwise at an rpm value RPM3, or
    • if the ambient temperature is equal or greater than 32 Celsius but less than 43 Celsius, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %70 the control unit activates the compressor to pump out the refrigerant towards the condenser for T5 seconds otherwise for T4 seconds, and if the second evaporator is to be activated after the first evaporator, the control unit activates the compressor at an rpm value RPM5, otherwise at an rpm value RPM4, or
    • if the ambient temperature is equal or greater than 43 Celsius, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %90 the control unit activates the compressor to pump out the refrigerant towards the condenser for T6 seconds otherwise for T5 seconds, and if the second evaporator is to be activated after the first evaporator, the control unit activates the compressor at an rpm value RPM6, otherwise at an rpm value RPM5,
    • wherein RPM6 > RPM5 > RPM4 > RPM3 > RPM2 > RPM1, and
    • wherein T6 > T5 > T4 > T3 > T2 > T1.
  • In another preferred embodiment of the invention, the rpm values of RPM1, RPM2, RPM3, RPM4, RPM5 and RPM6 are between 1200-1600 rpm, 1600-2000 rpm, 2000 -2400 rpm, 2400 -2800 rpm, 2800-3200 rpm, 3200-3600 rpm respectively.
  • In another preferred embodiment of the invention, the pump out times T1, T2, T3, T4, T5 and T6 are between 30-45, 45-60, 60-75, 75-90, 90-105 and 105-120 seconds respectively.
  • Another embodiment of the present invention relates to a method of operating a cooling appliance comprising;
    • providing a freezer compartment and a first evaporator configured to cool the freezer compartment upon activation,
    • providing a fresh food compartment and a second evaporator configured to cool the fresh food compartment upon activation,
    • providing a valve configured to direct the flow of the refrigerant towards the freezer evaporator or to the fresh food evaporator,
    • providing a check valve on an outlet of the freezer evaporator,
    • providing a condenser,
    • providing a compressor which upon being activated pumps out the refrigerant towards the condenser,
    • providing an ambient temperature sensor that measures the ambient temperature,
    • providing a sensor configured to detect the position of a door of the cooling appliance,
    • providing a control unit that activates or deactivates the first evaporator, the second evaporator, compressor and the valve, and that the control unit receives the ambient temperature value from the temperature sensor and that the control unit receives the position information of the door from the sensor and measures the time (P1, P2, P3, P4, P5) the door remained open per hour.
  • In another preferred embodiment of the invention, the control unit is configured to detect the ambient temperature, and
    • if the ambient temperature is less than 16 Celsius and
    • if the time the door remained open is less than P1, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %20, the control unit activates the compressor to pump out the refrigerant towards the condenser for a time interval of 30-45 seconds otherwise finishes the pump out process, and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm interval of 1400-1600 rpm, otherwise at an rpm interval of 1200-1400 rpm, or if the time the door remained open is greater than P1, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is greater than %20, the control unit activates the compressor to pump out the refrigerant towards the condenser for a time interval of 45-60 seconds, otherwise for a time interval of 30-45 seconds, and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm interval of 1600-1800, otherwise at an rpm interval of 1400-1600, or
    • if the ambient temperature is equal or greater than 16 Celsius but less than 25 Celsius and if the time the door remained open is less than P2, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %35 the control unit activates the compressor to pump out the refrigerant towards the condenser for a time interval of 60-75 seconds, otherwise for a time interval of 45-60 seconds and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm interval of 1800-2000 rpm, otherwise at an rpm interval of 1600-1800 rpm, or if the time the door remained open is greater than P2, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %35 the control unit activates the compressor to pump out the refrigerant towards the condenser for a time interval of 75-90 seconds, otherwise for a time interval of 60-75 seconds and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm interval of 2000-2200 rpm, otherwise at an rpm interval of 1800-2000 rpm, or
    • if the ambient temperature is equal or greater than 25 Celsius but less than 32 Celsius and if the time the door remained open is less than P3, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %50 the control unit activates the compressor to pump out the refrigerant towards the condenser for a time interval of 90-105 seconds, otherwise for a time interval of 75-90 seconds and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm interval of
    • 2200-2400 rpm, otherwise at an rpm value interval of 2000-2200, or if the time the door remained open is greater than P3, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %50 the control unit activates the compressor to pump out the refrigerant towards the condenser for a time interval of 105-120 seconds, otherwise for a time interval of 90-105 seconds and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm value interval of 2400-2600, otherwise at an rpm value interval of 2200-2400, or
    • if the ambient temperature is equal or greater than 43 Celsius and if the time the door remained open is less than P5, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %90 the control unit activates the compressor to pump out the refrigerant towards the condenser for time interval of 150-165 seconds, otherwise for time interval of 135-150 seconds and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm value interval of 3000-3200, otherwise at an rpm value interval of 2800-3000, or if the time the door remained open is greater than P5, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %90 the control unit activates the compressor to pump out the refrigerant towards the condenser for time interval of 165-180 seconds, otherwise for time interval of 150-165 seconds and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm value interval of 3400-3600, otherwise at an rpm interval of 3200-3400,
    • wherein P5 > P4 > P3 > P2 > P1.
  • All these applications involve alternative solutions to a particular embodiment, therefore it is inappropriate to cover these alternatives by a single claim.
  • An advantageous effect provided by means of the invention is that the cooling appliance is responsive to outer environmental conditions such as temperature, load of the cooling appliance and/or the time the door of the cooling appliance remained open, thus improving the energy efficiency of the cooling appliance.

Claims (6)

  1. A method of operating a cooling appliance comprising;
    providing a freezer compartment and a first evaporator configured to cool the freezer compartment upon activation,
    providing a fresh food compartment and a second evaporator configured to cool the fresh food compartment upon activation,
    providing a valve configured to direct the flow of the refrigerant towards the freezer evaporator or to the fresh food evaporator,
    providing a check valve on an outlet of the freezer evaporator,
    providing a condenser and a compressor,
    providing a control unit that activates or deactivates the first evaporator, the second evaporator, compressor and the valve,
    characterized in that
    the control unit determines whether the second evaporator is activated after or before the first evaporator, and
    if the second evaporator is activated after the first evaporator, the control unit measures last 5 run time of the first evaporator and if the average run time of the first evaporator is equal or less than %30, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of F, if the average run time of the freezer is between %30 to %50, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of E, if the average run time of the freezer is equal or greater than %50, activates the compressor to pump out the refrigerant towards the condenser at an rpm of D, or
    if the second evaporator is activated before the first evaporator, the control unit measures last 5 run time of the first evaporator and if the average run time of the first evaporator is equal or less than %30, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of C, if the average run time of the first evaporator is between %30 to %50, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of B, if the average run time of the first evaporator is more than %50, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of A,
    wherein A > B > C and D > E > F and wherein A is almost equal to F.
  2. A method of operating a cooling appliance according to claim 1, characterized in that the rpm values of "A", "B", "C", "D", "E" and "F" are between 2400-2100 rpm, 2100-1800 rpm, 1800-1500 rpm, 3000-2700 rpm, 2700-2400 rpm, 2400-2100 rpm respectively.
  3. A method of operating a cooling appliance comprising;
    providing a freezer compartment and a first evaporator configured to cool the freezer compartment upon activation,
    providing a fresh food compartment and a second evaporator configured to cool the fresh food compartment upon activation,
    providing a valve configured to direct the flow of the refrigerant towards the freezer evaporator or to the fresh food evaporator,
    providing a check valve on an outlet of the freezer evaporator,
    providing a condenser,
    providing a compressor which upon being activated pumps out the refrigerant towards the condenser,
    providing an ambient temperature sensor that measures the ambient temperature,
    providing a control unit that activates or deactivates the first evaporator, the second evaporator, compressor and the valve, and that the control unit receives the ambient temperature value from the temperature sensor,
    wherein
    the control unit detects the ambient temperature, and
    if the ambient temperature is less than 16 Celsius, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %20, the control unit activates the compressor to pump out the refrigerant towards the condenser for T2 seconds otherwise for T1 seconds, and if the second evaporator is to be activated after the first evaporator, the control unit activates the compressor at an rpm value RPM2, otherwise at an rpm value RPM1, or
    if the ambient temperature is equal or greater than 16 Celsius but less than 25 Celsius, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %35 the control unit activates the compressor to pump out the refrigerant towards the condenser for T3 seconds otherwise for T2 seconds, and if the and if the second evaporator is to be activated after the first evaporator, the control unit activates the compressor at an rpm value RPM3, otherwise at an rpm value RPM2, or
    if the ambient temperature is equal or greater than 25 Celsius but less than 32 Celsius, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %50 the control unit activates the compressor to pump out the refrigerant towards the condenser for T4 seconds otherwise for T3 seconds, and if the second evaporator is to be activated after the first evaporator, the control unit activates the compressor at an rpm value RPM4, otherwise at an rpm value RPM3, or if the ambient temperature is equal or greater than 32 Celsius but less than 43 Celsius, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %70 the control unit activates the compressor to pump out the refrigerant towards the condenser for T5 seconds otherwise for T4 seconds, and if the second evaporator is to be activated after the first evaporator, the control unit activates the compressor at an rpm value RPM5, otherwise at an rpm value RPM4, or if the ambient temperature is equal or greater than 43 Celsius, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %90 the control unit activates the compressor to pump out the refrigerant towards the condenser for T6 seconds otherwise for T5 seconds, and if the second evaporator is to be activated after the first evaporator, the control unit activates the compressor at an rpm value RPM6, otherwise at an rpm value RPM5,
    wherein RPM6 > RPM5 > RPM4 > RPM3 > RPM2 > RPM1, and
    wherein T6 > T5 > T4 > T3 > T2 > T1.
  4. A method of operating a cooling appliance according to claim 3, characterized in that the rpm values of RPM1, RPM2, RPM3, RPM4, RPM5 and RPM6 are between 1200-1600 rpm, 1600-2000 rpm, 2000 -2400 rpm, 2400 -2800 rpm, 2800-3200 rpm, 3200-3600 rpm respectively.
  5. A method of operating a cooling appliance according to claims 3 to 4, characterized in that the pump out times T1, T2, T3, T4, T5 and T6 are between 30-45, 45-60, 60-75, 75-90, 90-105 and 105-120 seconds respectively.
  6. A method of operating a cooling appliance comprising;
    providing a freezer compartment and a first evaporator configured to cool the freezer compartment upon activation,
    providing a fresh food compartment and a second evaporator configured to cool the fresh food compartment upon activation,
    providing a valve configured to direct the flow of the refrigerant towards the freezer evaporator or to the fresh food evaporator,
    providing a check valve on an outlet of the freezer evaporator,
    providing a condenser,
    providing a compressor which upon being activated pumps out the refrigerant towards the condenser,
    providing an ambient temperature sensor that measures the ambient temperature,
    providing a sensor configured to detect the position of a door of the cooling appliance,
    providing a control unit that activates or deactivates the first evaporator, the second evaporator, compressor and the valve, and that the control unit receives the ambient temperature value from the temperature sensor and that the control unit receives the position information of the door from the sensor and measures the time (P1, P2, P3, P4, P5) the door remained open per hour, wherein
    the control unit detects the ambient temperature, and
    if the ambient temperature is less than 16 Celsius and
    if the time the door remained open is less than P1, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %20, the control unit activates the compressor to pump out the refrigerant towards the condenser for a time interval of 30-45 seconds otherwise finishes the pump out process, and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm interval of 1400-1600 rpm, otherwise at an rpm interval of 1200-1400 rpm, or if the time the door remained open is greater than P1, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is greater than %20, the control unit activates the compressor to pump out the refrigerant towards the condenser for a time interval of 45-60 seconds, otherwise for a time interval of 30-45 seconds, and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm interval of 1600-1800, otherwise at an rpm interval of 1400-1600, or
    if the ambient temperature is equal or greater than 16 Celsius but less than 25 Celsius and if the time the door remained open is less than P2, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %35 the control unit activates the compressor to pump out the refrigerant towards the condenser for a time interval of 60-75 seconds, otherwise for a time interval of 45-60 seconds and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm interval of 1800-2000 rpm, otherwise at an rpm interval of 1600-1800 rpm, or if the time the door remained open is greater than P2, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %35 the control unit activates the compressor to pump out the refrigerant towards the condenser for a time interval of 75-90 seconds, otherwise for a time interval of 60-75 seconds and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm interval of 2000-2200 rpm, otherwise at an rpm interval of 1800-2000 rpm, or
    if the ambient temperature is equal or greater than 25 Celsius but less than 32 Celsius and if the time the door remained open is less than P3, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %50 the control unit activates the compressor to pump out the refrigerant towards the condenser for a time interval of 90-105 seconds, otherwise for a time interval of 75-90 seconds and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm interval of 2200-2400 rpm, otherwise at an rpm value interval of 2000-2200, or if the time the door remained open is greater than P3, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %50 the control unit activates the compressor to pump out the refrigerant towards the condenser for a time interval of 105-120 seconds, otherwise for a time interval of 90-105 seconds and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm value interval of 2400-2600, otherwise at an rpm value interval of 2200-2400, or
    if the ambient temperature is equal or greater than 43 Celsius and if the time the door remained open is less than P5, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %90 the control unit activates the compressor to pump out the refrigerant towards the condenser for time interval of 150-165 seconds, otherwise for time interval of 135-150 seconds and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm value interval of 3000-3200, otherwise at an rpm value interval of 2800-3000, or if the time the door remained open is greater than P5, the control unit measures the average of last 5 run time of the first evaporator and if the average run time of the first evaporator is more than %90 the control unit activates the compressor to pump out the refrigerant towards the condenser for time interval of 165-180 seconds, otherwise for time interval of 150-165 seconds and if the first evaporator is to be activated after the second evaporator, the control unit activates the compressor at an rpm value interval of 3400-3600, otherwise at an rpm interval of 3200-3400,
    wherein P5 > P4 > P3 > P2 > P1.
EP22158695.1A 2021-03-22 2022-02-25 A method of operating a cooling appliance Active EP4063771B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR202105166 2021-03-22

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EP4063771A2 true EP4063771A2 (en) 2022-09-28
EP4063771A3 EP4063771A3 (en) 2022-11-30
EP4063771B1 EP4063771B1 (en) 2024-02-07

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PL (1) PL4063771T3 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100826179B1 (en) 2006-11-14 2008-04-30 엘지전자 주식회사 Refrigerator and its control method
JP2012017881A (en) 2010-07-06 2012-01-26 Toshiba Corp Refrigerator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005016777A (en) * 2003-06-24 2005-01-20 Matsushita Electric Ind Co Ltd refrigerator
JP2005265267A (en) * 2004-03-18 2005-09-29 Matsushita Electric Ind Co Ltd refrigerator
JP5097361B2 (en) * 2006-05-15 2012-12-12 ホシザキ電機株式会社 Cooling storage and operation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100826179B1 (en) 2006-11-14 2008-04-30 엘지전자 주식회사 Refrigerator and its control method
JP2012017881A (en) 2010-07-06 2012-01-26 Toshiba Corp Refrigerator

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EP4063771A3 (en) 2022-11-30
EP4063771B1 (en) 2024-02-07

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