EP2313718B1 - Kühlvorrichtung - Google Patents

Kühlvorrichtung Download PDF

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Publication number
EP2313718B1
EP2313718B1 EP09772566.7A EP09772566A EP2313718B1 EP 2313718 B1 EP2313718 B1 EP 2313718B1 EP 09772566 A EP09772566 A EP 09772566A EP 2313718 B1 EP2313718 B1 EP 2313718B1
Authority
EP
European Patent Office
Prior art keywords
door
heater
evaporator
opened
temperature
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.)
Active
Application number
EP09772566.7A
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English (en)
French (fr)
Other versions
EP2313718A2 (de
Inventor
Mehmet Oturak
Emre Arisoy
Veysi Ercan
Ilkin Tacan
Alper Mirza
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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Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Priority to PL09772566T priority Critical patent/PL2313718T3/pl
Publication of EP2313718A2 publication Critical patent/EP2313718A2/de
Application granted granted Critical
Publication of EP2313718B1 publication Critical patent/EP2313718B1/de
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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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • 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
    • F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/141—Removal by evaporation
    • F25D2321/1413—Removal by evaporation using heat from electric elements or using an electric field for enhancing removal
    • 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

  • the present invention relates to a cooling device comprising a drip tray, wherein the water resulting from the defrost operation is collected.
  • the frost deposit formed on the evaporator in time results in a decrease of refrigeration performance.
  • the frost on the evaporator is melted by performing the defrost operation at certain intervals in order to avert this adverse effect.
  • the water from melting is collected in a drip tray. This drip tray needs to be discharged in due course. There are embodiments known in the technique where the drip tray is discharged by the user.
  • the cooling device comprises a sensor for determining the water level in the tray.
  • the heater is energized when the water level reaches above a certain level depending on the data received from the sensor.
  • the Japanese Patent No JP9318233 a cooling device is explained wherein the decision for energizing the heater is based on the output relating to the water level in the evaporating pan and the temperature inside the device.
  • the heater immersed in the water receptacle is energized at low cabinet temperature or pressure, or whenever the compressor motor is stopped.
  • a heat transfer element is provided between the drip tray and the evaporator.
  • a heat sensor is disposed on the said heat transfer element. The decision for energizing the drip tray heater and the work duration is given by means of the data received from the said heat sensor.
  • problems may arise such as operating the heater more than required or less than required and not starting to operate the heater in due time since the time when to start energizing and the operation duration of the heater for evaporating the water in the drip tray cannot be determined effectively. This results in the increase in energy consumption of the cooling device and lowers operational efficiency.
  • the aim of the present invention is the realization of a cooling device, wherein the energy consumption of the drip tray heater, is decreased.
  • the cooling device comprises a control unit that determines the operation duration of the heater based on the number of times the door has been opened for evaporating by heating the water collected in the drip tray as a result of melting the ice deposited on the evaporator in the defrost process.
  • the operation duration of the heater is determined by the control unit by multiplying the number of times the door has been opened by a constant time period saved in the memory by the producer.
  • the operation duration of the heater is determined by the control unit by multiplying the number of times the door has been opened by a variable time period calculated by using the operational and exterior environmental parameters. Accordingly, the operation duration of the heater is adjusted by taking into consideration the data, for example, whether the exterior environment temperature is low or high, or the duration of the previous defrost process and thereby the heater is operated for the most efficient duration.
  • control unit keeps in memory how many times the door has been opened since the heater is last operated or since a certain time period to assess the number of times the door is opened and determines the operation duration of the heater according to this data.
  • control unit resets to zero the number of times the door has been opened saved in the memory when the heater is operated.
  • the cooling device comprises at least one compressor for performing the refrigeration cycle and a single cabin.
  • the control unit energizes the heater whenever the compressor is not operating.
  • the cooling device comprises more than one cabin, more than one evaporator disposed in each of these cabins and a valve that controls transfer of the refrigerant to the evaporators.
  • the control unit energizes the heater in the drip tray of each evaporator when the valve is in the position of preventing refrigerant delivery to the respective cabin.
  • control unit energizes the heater when the evaporator temperature is within a certain interval.
  • the upper and lower limit values of the said interval are prerecorded in the memory of the control unit by the producer or are calculated by the control unit using the operational and/or exterior environmental parameters.
  • control unit does not energize the heater if the door is not opened at all since a certain time period.
  • control unit energizes the heater when all of the following conditions are met: the door is opened at least once since a certain time period, the refrigerant not being delivered to the cabin containing the heater and the evaporator temperature is within the desired interval.
  • the heater is operated at the right time and as long as required. Consequently, the energy wastage and loss of efficiency due to operating the heater more than necessary is prevented.
  • the cooling device (1) comprises at least one cabin (2) wherein articles to be cooled are placed, one or more doors (3) allowing access into the cabin (2), at least one evaporator (4) that cools the interior volume of the cabin (2) by absorbing the thermal energy, at least one compressor (8) for maintaining the refrigeration cycle, at least one drip tray (5) for collecting the water resulting from melting the frost accumulated on the evaporator (4) and at least one heater (6) for vaporizing the water in the drip tray (5) by heating ( Figure 1 ).
  • the cooling device (1) furthermore comprises a control unit (7) that determines the operation duration of the heater (6) (theater) depending on the number of times the door (3) has been opened (n door ).
  • the heater (6) is operated for a sufficient period of time for evaporating the water in the drip tray (5) thereby preventing energy wastage since the operation duration of the heater (6) (theater) is determined with respect to the number of times the door (3) has been opened (n door ) which considerably affects the rate of humidity in the cooling device (1).
  • control unit (7) determines the operation duration of the heater (6) (theater) by multiplying the number of times the door (3) has been opened (n door ) with a constant time period (t c ), for example 8 minutes, saved into the memory of the control unit (7) by the producer.
  • control unit (7) determines the operation duration of the heater (6) (t heater ) by multiplying the number of times the door (3) has been opened (n door ), with a time period (t v ) calculated by using the operational and exterior environmental parameters.
  • the number of times the door (3) has been opened is the information about how many times the door (3) has been opened since the last time the heater (6) is energized and denergized.
  • the number of times the door (3) has been opened (n door ) that is saved in the memory of the control unit (7) is reset to zero when the heater (6) is operated.
  • the number of times the door (3) has been opened is information about how many times the door (3) has been opened since a certain time duration determined by the producer, for example in the last 7 hours, and saved in the memory of the control unit (7).
  • the cooling device (1) comprises a single cabin (2).
  • the control unit (7) energizes the heater (6) whenever the compressor (8) is not operating ( Figure 1 ).
  • the cooling device (1) comprises more than one cabin (2), at least one evaporator (4) disposed in each of these cabins (2), at least one drip tray (5) in each cabin (2), at least one heater (6) in each drip tray (5) and a valve (9) that determines the directing of the refrigerant pumped from the compressor (8) to the respective evaporators (4).
  • the control unit (7) energizes the heaters (6) whenever the valve (9) of the respective cabin (2) does not deliver the refrigerant thereto ( Figure 2 ).
  • the control unit (7) energizes the heater (6) when the evaporator (4) temperature (T eva ) is between the values of the minimum evaporator (4) temperature (T evamin ) for operating the heater (6) and the maximum evaporator (4) temperature (T evamax ) for operating the heater (6).
  • the said limit values (T evamin , T evamax ) are prerecorded in the memory of the control unit (7) by the producer or are calculated by the control unit (7) by using the operational and/or exterior environmental parameters.
  • control unit (7) does not energize the heater (6) when the door (3) is not opened at all since a certain time period, for example in the last 7 hours. Consequently, operating the heater (6) unnecessarily is prevented thereby conserving energy.
  • control unit (7) energizes the heater (6) when:
  • the operation of the heater (6) is controlled in the following manner:
  • the heater (6) is energized at the required time and for as long as necessary by using information of the number of times the door (3) has been opened (n door ), thereby reducing energy consumption and maintaining the efficient operation of the cooling device (1).

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)
  • Defrosting Systems (AREA)
  • Removal Of Water From Condensation And Defrosting (AREA)

Claims (10)

  1. Ein Kühlgerät(1) bestehendaus:
    mindestens einer Kabine (2) wobei Waren zum Kühlen hingelegt werden, einer oder mehreren Türe (3), die den Zugang in die Kabine (2) ermöglicht, mindestens einem Verdampfer (4), der den innerlichen Raum der Kabine (2) abkühlt durch Absorbieren von Wärmeenergie, mindestens einem Kompressor (8) für Versorgung eines Kälteerzeugungskreislaufes, mindestens einer Tropfschale (5) für Einsammlung des Wassers, das von Verschmelzung des auf dem Verdampfer (4)angesammelten Frost resultiert und mindestens einem Heizgerät (6) für Verdampfung des Wassers in der Tropfschale (5) durch Erhitzung, besagte Kühlgerät gekennzeichnet durch eine Kontrolleeinheit (7) konfiguriert für Feststellung der Operations-dauer des Heizgeräts (6) (theizgerät), die von Öffnungszahl der Tür (3) abhängig ist (ntür).
  2. Ein Kühlgerät (1) nach Anspruch 1, dadurch gekennzeichnet, daß Kontrolleinheit (7) die Operationsdauer des Heizgeräts (6) (theizgerät) feststellt durch Multiplizieren der Öffnungszahl der Tür (3) (ntür) mit einer konstanten Zeitperiode (tc), die vom Hersteller im Speicherder Kontrolleinheit (7) eingespeichert ist.
  3. Ein Kühlgerät (1) nach Anspruch 1, dadurch gekennzeichnet, daß Kontrolleinheit (7) die Operationsdauer des Heizgeräts (6) (theizgerät) feststellt durch Multiplizieren der Öffnungszahl der Tür (3) (ntür) mit einer Zeitperiode (tv) die durch Verwendung der operationalen und/oder äußeren Umweltparametern berechnet ist.
  4. Ein Kühlgerät (1) nach den vorhergehenden Ansprüchen, dadurch gekennzeichnet, daß eine Kontrolleinheit (7), die die Information darüber verwendet, wievielmal die Tür (3) geöffnet ist, nachdem das Heizgerät (6) eingeschaltet und abgeschaltet wird, als die Tür (3) (ntür)geöffnet wird und stellt die Öffnungszahl der Tür (3) (ntür) auf null zurück, die im Speicher eingespeichert ist, wenn das Heizgerät (6) operiert wird.
  5. Ein Kühlgerät (1) nach den vorhergehenden Ansprüchen 1 bis 3, dadurch gekennzeichnet daß eine Kontrolleinheit (7), die die Information darüber verwendet, wievielmal die Tür (3) geöffnet ist, nachdem Verlauf einer bestimmten Zeitperiode, die vom Hersteller festgestellt und im Speicher eingespeichert ist als die Öffnungszahl der Tür (3) (ntür).
  6. Ein Kühlgerät (1) nach den vorhergehenden Ansprüchen, dadurch gekennzeichnet daß mehr als eine Kabine (2), mindestens ein Verdampfer (4) angeordnet ist in jeder dieser Kabinen (2), mindestens eine Tropfschale (5) in jeder Kabine (2), mindestens ein Heizgerät (6) in jeder Tropfschale (5) und mindestens ein Ventil (9), das die Richtung des Kältemittels feststellt, das vom Kompressor (8) zur betreffenden Verdampfer (4) gepumpt wird und eine Kontrolleinheit(7), die die Heizgeräte einschaltet (6),falls das Ventil (9) der betreffenden Kabine (2) das Kältemittel hierher nicht einliefert.
  7. Ein Kühlgerät (1) nach den vorhergehenden Ansprüchen, dadurch gekennzeichnet daß eine Kontrolleinheit (7), die das Heizgerät (6) einschaltet, wenn die Verdampfer (4) Temperatur (Tver) zwischen Grenzwerten von niedrigster Verdampfer- (4) Temperatur (Tvermin) und höchster Verdampfer- (4) Temperatur (Tvermax) steht.
  8. Ein Kühlgerät (1) nach Anspruch 7, dadurch gekennzeichnet, daß eine Kontrolleinheit (7), wobei Grenzwerten (Tvermin, Tvermax) der Verdampfer- (4) Temperatur (Tver) vorher vom Hersteller in den Speicher eingespeichert wurde.
  9. Ein Kühlgerät (1) nach Anspruch 7, dadurch gekennzeichnet, daß eine Kontrolleinheit (7), die die Grenzwerte(Tvermin, Tvermax) der Verdampfer- (4) Temperatur (Tver) berechnet durch Verwendung von operationalen und/oder äußeren Umweltparametern.
  10. Eine Kontrollmethode für Kühlgerät (1) nach Anspruch1, bestehend aus Schritten:
    - Anfang des Prozesses für Entscheidung zur Operation des Heizgeräts (6) (100),
    - Kontrolle, ob der Kompressor (8) tätig ist oder nicht (101),
    - Falls der Kompressor (8) tätig ist, kehre zurück zum Anfangsschritt (100),
    - Falls der Kompressor (8) nicht tätig ist, vergleiche die Verdampfer- (4) Temperatur (Tver) mit minimal Verdampfer- (4) Temperatur (Tvermin) und Maximum Verdampfer- (4) Temperatur (Tvermax) für die Operation des Heizgeräts (6) (102),
    - Falls die Verdampfer- (4) Temperatur (Tver) niedriger als die minimal Verdampfer- (4) Temperatur (Tvermin) oder höher als die Maximum Verdampfer- (4) Temperatur (Tvermax) für die Operation des Heizgeräts (6) ist, kehre zurück zum Anfangsschritt (100),
    - Falls die Verdampfer- (4) Temperatur (Tver) zwischen der minimal Verdampfer- (4) Temperatur (Tvermin) und der Maximum Verdampfer- (4) Temperatur (Tvermax) für Operation des Heizgeräts (6) ist, kontrolliere ob die Öffnungszahlen der Tür (3) (ntür) von null verschieden ist oder nicht (103),
    - Falls die Öffnungszahlen der Tür (3) (ntür) null ist, kehr zurück zum Anfangsschritt (100),
    - Falls die Öffnungszahlen der Tür (3) (ntür) von null verschieden ist, operiere das Heizgerät (6) (104),
    - Vergleiche die Operationsdauer des Heizgeräts (6) (theizgerät) mit längster Operations-dauer des Heizgeräts (6) (theizgerät-max) und das Ergebnis von Multiplikation der Öffnungszahlen der Tür (3) (ntür) mit einer konstanten Zeit (tk) (105)
    - Falls die Operationsdauer des Heizgeräts (6) (theizgerät) gleich zur längster Operations-dauer (6) (theizgerät-max) oder zum Ergebnis der Multiplikation der Öffnungszahlen der Tür (3) (ntür) mit einer konstanten Zeit (tk) ist, die vom Hersteller im Speicher der Kontrolleinheit (7) eingespeichert ist, dann das Heizgerät (6) ist ausgeschaltet, wobei die Operationsdauer des Heizgeräts (6) (theizgerät) und die Öffnungszahlen der Tür (3) (ntür) sind auf null eingestellt (106)
    - Zurückkehrung zum Anfangsschritt (100).
EP09772566.7A 2008-07-04 2009-07-06 Kühlvorrichtung Active EP2313718B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09772566T PL2313718T3 (pl) 2008-07-04 2009-07-06 Urządzenie chłodzące

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200804968 2008-07-04
PCT/EP2009/058499 WO2010000866A2 (en) 2008-07-04 2009-07-06 A cooling device

Publications (2)

Publication Number Publication Date
EP2313718A2 EP2313718A2 (de) 2011-04-27
EP2313718B1 true EP2313718B1 (de) 2017-09-06

Family

ID=41463090

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09772566.7A Active EP2313718B1 (de) 2008-07-04 2009-07-06 Kühlvorrichtung

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EP (1) EP2313718B1 (de)
PL (1) PL2313718T3 (de)
WO (1) WO2010000866A2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011078321A1 (de) * 2011-06-29 2013-01-03 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit Verdunstungsschale und Hilfseinrichtung zur Verdunstungsförderung
DE102011078323A1 (de) * 2011-06-29 2013-01-03 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit Verdunstungsschale und Hilfseinrichtung zur Verdunstungsförderung
DE102011078322A1 (de) * 2011-06-29 2013-01-03 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit Verdunstungsschale und Hilfseinrichtung zur Verdunstungsförderung
DE102013221249B4 (de) 2013-10-21 2023-07-27 BSH Hausgeräte GmbH Kältegerät mit einer Verdunstungsschale
CN114291441B (zh) * 2022-01-13 2023-06-06 安徽宏昌机电装备制造有限公司 航空机动保障方舱

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10208558A1 (de) * 2002-02-27 2003-09-04 Vasilios Zigaris Verdunstungswanne
DE102004012498A1 (de) * 2004-03-15 2005-10-06 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2010000866A2 (en) 2010-01-07
WO2010000866A3 (en) 2010-03-04
EP2313718A2 (de) 2011-04-27
PL2313718T3 (pl) 2018-02-28

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