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EP3376142B1 - Réfrigérateur ayant un mode sans givre avancé - Google Patents

Réfrigérateur ayant un mode sans givre avancé Download PDF

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Publication number
EP3376142B1
EP3376142B1 EP17161322.7A EP17161322A EP3376142B1 EP 3376142 B1 EP3376142 B1 EP 3376142B1 EP 17161322 A EP17161322 A EP 17161322A EP 3376142 B1 EP3376142 B1 EP 3376142B1
Authority
EP
European Patent Office
Prior art keywords
matrix
ice level
operating
time interval
output values
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
EP17161322.7A
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German (de)
English (en)
Other versions
EP3376142A1 (fr
Inventor
Serhat ÖZKÜCÜK
Ali Utku SACKIRAN
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.)
Vestel Elektronik Sanayi ve Ticaret AS
Original Assignee
Vestel Elektronik Sanayi ve Ticaret 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 Vestel Elektronik Sanayi ve Ticaret AS filed Critical Vestel Elektronik Sanayi ve Ticaret AS
Priority to EP17161322.7A priority Critical patent/EP3376142B1/fr
Priority to TR2017/04723A priority patent/TR201704723A2/tr
Publication of EP3376142A1 publication Critical patent/EP3376142A1/fr
Application granted granted Critical
Publication of EP3376142B1 publication Critical patent/EP3376142B1/fr
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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
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating

Definitions

  • the present invention refers according to claim 1 to a refrigerator and a method for operating a refrigerator according to claim 7.
  • Document US5692385A discloses an apparatus for use with a refrigeration system including a compressor for compressing a working fluid evaporated in an evaporator and condensed in a condenser.
  • a control circuit initiates operation of a refrigeration cycle and initiates a defrost cycle in response to a defrost enable signal.
  • the apparatus drives an air moving assembly moving air over the evaporator.
  • a motor including a rotatable assembly is in driving relation to the air moving assembly.
  • An energizing circuit selectively energizes the motor in response to the control circuit.
  • a sensing circuit generates a speed/torque signal representative of a speed or a torque of the motor.
  • a defrost initiating circuit generates the defrost enable signal when the speed/torque signal indicates that the speed is greater than a predetermined speed or the torque is greater than a predetermined torque.
  • the defrost cycle is initiated in response to degradation of the refrigeration cycle as indicated by frost or ice on the evaporator which reduces air flow through the evaporator and increases static pressure.
  • Other demand defrost apparatus and methods of initiating and sensing defrost cycles are also disclosed.
  • Document US20080073376A1 discloses a dispenser, for preferably Frozen Carbonate Beverage (FCB) product, having valves that can be manually or electrically operated in response to electronic controls.
  • the valve has a jam dispensing position, and can be used with an additive, such as flavors, injector.
  • a power failure back up is provided to close the valve, along with sanitation and optional purging cycles.
  • Product dispense is provided only when sensed to have a desired consistency and/or in a condition to prevent splashing.
  • Additive dispense is provided only when product is present.
  • the dispenser can have a monitor and suitable controller to dispense strips or layers of different additives or flavors into the product.
  • a defrost controller may use an embodiment of such a probe to monitor an amount of frost build up on the fin or fins of a cooling unit (e.g., a refrigeration or freezer unit) so that the controller may initiate a defrost cycle only when warranted.
  • a cooling unit e.g., a refrigeration or freezer unit
  • Such a probe may be more reliable than other defrost-detection techniques, and such a defrost controller may increase the cooling and energy efficiencies of a cooling unit as compared to a cooling unit having a conventional defrost controller.
  • Document US4104888 discloses a control system for monitoring frost accumulation on the coil of a heat pump.
  • An operational parameter of the heat pump compressor responsive to frost accumulation such as compressor current, is compared to a reference level developed during a non-frost condition of the coil to initiate and terminate coil defrosting in response to a predetermined variation between the operational and reference parameter levels.
  • the main problem is that the presence and amount of ice on the heat-exchanger is not detected simultaneously without sensors.
  • Defrost operation is done automatically with help of periodic programming. Existence of ice and need of heating to melt the ice is unknown. So this periodic defrost operation causes inefficient situation by energy consume and cooling performance of No-frost refrigerators.
  • the refrigerator according to the present invention comprises at least a compressor unit for compressing a liquid, a heater unit for heating of at least parts of an internal space for defrosting, an energy source, in particularly a plug for connecting to a grid, wherein the energy source provides electric energy for operating the heater unit and wherein the energy source provides an operating current for operating the compressor unit, and a control unit, wherein the control unit determines changes of the operating current of the compressor unit, wherein the control unit operates the heater unit in a predefined manner in dependency of changes of the operating current, wherein operating current is detected in multiple predefined time intervals and an output value representing the average current in each time interval is outputted, wherein the output values are processed as matrix values, wherein the output values are inputted into a state matrix one after the other, wherein a determinant is calculated and outputted after the state matrix is filled, wherein further output values representing the average operating current in defined time intervals are outputted, wherein the output values are processed as further matrices
  • the operating current is detected according to the present invention in multiple predefined time intervals and an output value representing the average current in each time interval is outputted, wherein the output values are processed as matrix values, wherein the output values are inputted into a state matrix one after the other, wherein a determinant is calculated and outputted after the state matrix is filled.
  • This is beneficial since changes of the operating current are tracked and processed in a predefined manner.
  • further output values representing the average operating current in defined time intervals are outputted, wherein the output values are processed as further matrices values, wherein the output values are inputted into further state matrixes one after the other, wherein the output values of each time interval are processed as one state matrix, wherein a determinant is calculated and outputted for each state matrix.
  • This embodiment is beneficial since a very precise determination and handling of present situations is possible.
  • An ice level matrix is set up according to the present invention, wherein the ice level matrix is a YxY matrix, in particularly a 2x2 matrix, wherein the determinants are inserted in chronological order.
  • the ice level matrix is a YxY matrix, in particularly a 2x2 matrix, wherein the determinants are inserted in chronological order.
  • a further determinant is according to a further preferred embodiment of the present invention inserted into the field of the last line and the last column, the determinant of the filed in the first line and the first column is deleted, each of the other determinants is inserted into a field previous to the respective present field.
  • zero ice level is determined in case all four members of ice level matrix are negative, low ice level is determined in case three members of ice level matrix are negative, mid ice level is determined in case two members of ice level matrix are negative, high ice level is determined in case one members of ice level matrix is negative, highest ice level is determined in case zero members of ice level matrix are negative, wherein zero ice level does not require operation of heater unit and wherein low ice level requires a first time interval of operating the heater unit, wherein mid ice level requires a second time interval of operating the heater unit, wherein high ice level requires a third time interval of operating the heater unit, wherein highest ice level requires a fourth time interval of operating the heater unit, wherein the second time interval is longer than the first time interval and wherein the third time interval is longer than the second time interval and wherein the fourth time interval is longer than the third time interval.
  • This embodiment is beneficial since the necessary heater unit operation can be selected in a clear and precise manner.
  • the above mentioned object is also solved by a method according to claim 7 for operating a refrigerator.
  • the method comprises at least the steps: Providing a refrigerator, wherein the refrigerator comprises at least a compressor unit for compressing a liquid, a heater unit for heating of at least parts of an internal space for defrosting, an energy source, in particularly a plug for connecting to a grid, wherein the energy source provides electric energy for operating the heater unit and wherein the energy source provides an operating current for operating the compressor unit, and a control unit, wherein the control unit determines changes of the operating current of the compressor unit, wherein the control unit operates the heater unit in a predefined manner in dependency of changes of the operating current, wherein operating current is detected in multiple predefined time intervals and an output value representing the average current in each time interval is outputted, wherein the output values are processed as matrix values, wherein the output values are inputted into a state matrix one after the other, wherein a determinant is calculated and outputted after the state matrix is filled, wherein further output values representing the average operating current in
  • Fig. 1 shows a refrigerator comprising a BLDC compressor and a control unit.
  • Fig. 1 shows a refrigerator 1.
  • Said refrigerator 1 comprises a BLDC compressor 2.
  • the BLDC compressor is part of a heat-exchanger unit.
  • a control unit 3 operates a heater unit 4.
  • the present invention refers to a compressor unit 2 for compressing a liquid, a heater unit 4 for heating of at least parts of an internal space for defrosting, an energy source 5, in particularly a plug for connecting to a grid, wherein the energy source 5 provides electric energy for operating the heater unit 4 and wherein the energy source 5 provides an operating current for operating the compressor unit 2, and a control unit 3, wherein the control unit 3 determines changes of the operating current of the compressor unit 2, wherein the control unit 3 operates the heater unit 4 in a predefined manner in dependency of changes of the operating current.
  • the inventive refrigerator 1 preferably has a BLDC compressor (inverter).
  • Id is the flux component
  • Iq is the torque component of the BLDC compressor current.
  • the average of the torque component of the BLDC compressor current (Iq) is taken in certain measurement period.
  • the average measurements Iq values are captured in period of small certain time (interval between 5 and 10 minutes can be select) for a newly developed matrices algorithm.
  • the detecting existing ice even amount of the ice on the heat-exchanger without using any sensor but with using a matrix algorithm is possible.
  • Ice Level Matrix det state matrix _ 1 det state matrix _ 2 det state matrix _ 3 det state matrix _ 4
  • det state matrix_N .
  • det state matrix_N ) is always equal to zero or positive value.
  • Ice Level matrix One interpretation of the Ice Level matrix might be:
  • the heater unit is operated in dependency of the number of members of the Ice Level Matrix.

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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)
  • Defrosting Systems (AREA)

Claims (7)

  1. Réfrigérateur (1),
    comprenant au moins
    une unité de compresseur (2) pour comprimer un liquide,
    une unité de dispositif de chauffage (4) pour le chauffage d'au moins des parties d'un espace interne pour dégivrage,
    une source d'énergie (5), en particulier une fiche pour connexion à un réseau,
    dans lequel la source d'énergie (5) fournit de l'énergie électrique pour faire fonctionner l'unité de dispositif de chauffage (4) et
    dans lequel la source d'énergie (5) fournit un courant de fonctionnement pour faire fonctionner l'unité de compresseur (2),
    et
    une unité de commande (3),
    dans lequel l'unité de commande (3) détermine des changements du courant de fonctionnement de l'unité de compresseur (2),
    dans lequel l'unité de commande (3) fait fonctionner l'unité de dispositif de chauffage (4) d'une manière prédéfinie en fonction de changements du courant de fonctionnement, caractérisé en ce qu'un courant de fonctionnement est détecté dans de multiples intervalles de temps prédéfinis et une valeur de sortie représentant le courant moyen dans chaque intervalle de temps est sortie, dans lequel les valeurs de sortie sont traitées en tant que valeurs matricielles, dans lequel les valeurs de sortie sont entrées dans une matrice d'état les unes après les autres,
    dans lequel un déterminant est calculé et sorti après que la matrice d'état a été remplie, dans lequel des valeurs de sortie supplémentaires représentant le courant de fonctionnement moyen dans des intervalles de temps définis sont sorties, dans lequel les valeurs de sortie sont traitées en tant que valeurs matricielles supplémentaires, dans lequel les valeurs de sortie sont entrées dans des matrices d'état supplémentaires les unes après les autres, dans lequel les valeurs de sortie de chaque intervalle de temps sont traitées en tant qu'une matrice d'état,
    dans lequel un déterminant est calculé et sorti pour chaque matrice d'état, et,
    dans lequel une matrice de niveau de glace est établie, dans lequel la matrice de niveau de glace est une matrice YxY, dans lequel les déterminants sont insérés dans un ordre chronologique.
  2. Réfrigérateur selon la revendication 1,
    caractérisé en ce que
    l'unité de compresseur (2) comprend ou est constituée d'un compresseur BLDC.
  3. Réfrigérateur selon la revendication 1,
    caractérisé en ce que
    dans le cas où la matrice de niveau de glace est pleine un déterminant supplémentaire est inséré dans le champ de dernière ligne et dernière colonne, le déterminant du champ de première ligne et première colonne est supprimé, chacun des autres déterminants est inséré dans un champ avant le présent champ respectif.
  4. Réfrigérateur selon la revendication 3,
    caractérisé en ce que
    la matrice de niveau de glace est une matrice 2x2.
  5. Réfrigérateur selon la revendication 4,
    caractérisé en ce que
    un niveau de glace nul est déterminé dans le cas où les quatre éléments de matrice de niveau de glace sont tous négatifs,
    un niveau de glace bas est déterminé dans le cas où trois éléments de matrice de niveau de glace sont négatifs,
    un niveau de glace intermédiaire est déterminé dans le cas où deux éléments de matrice de niveau de glace sont négatifs,
    un niveau de glace élevé est déterminé dans le cas où un élément de matrice de niveau de glace est négatif,
    un niveau de glace le plus élevé est déterminé dans le cas où aucun élément de matrice de niveau de glace n'est négatif,
    dans lequel un niveau de glace nul ne nécessite pas le fonctionnement de l'unité de dispositif de chauffage et
    dans lequel un niveau de glace bas nécessite un premier intervalle de temps de fonctionnement de l'unité de dispositif de chauffage,
    dans lequel un niveau de glace intermédiaire nécessite un deuxième intervalle de temps de fonctionnement de l'unité de dispositif de chauffage,
    dans lequel un niveau de glace élevé nécessite un troisième intervalle de temps de fonctionnement de l'unité de dispositif de chauffage,
    dans lequel un niveau de glace le plus élevé nécessite un quatrième intervalle de temps de fonctionnement de l'unité de dispositif de chauffage,
    dans lequel le deuxième intervalle de temps est plus long que le premier intervalle de temps et dans lequel le troisième intervalle de temps est plus long que le deuxième intervalle de temps et dans lequel le quatrième intervalle de temps est plus long que le troisième intervalle de temps.
  6. Réfrigérateur selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que
    chaque matrice d'état est une matrice 2x2.
  7. Procédé de fonctionnement d'un réfrigérateur comprenant au moins les étapes de :
    fourniture d'un réfrigérateur (1) comprenant au moins
    une unité de compresseur (2) pour comprimer un liquide,
    une unité de dispositif de chauffage (4) pour le chauffage d'au moins des parties d'un espace interne pour dégivrage,
    une source d'énergie (5), en particulier une fiche pour connexion à un réseau,
    dans lequel la source d'énergie (5) fournit de l'énergie électrique pour faire fonctionner l'unité de dispositif de chauffage (4) et
    dans lequel la source d'énergie (5) fournit un courant de fonctionnement pour faire fonctionner l'unité de compresseur (2),
    et
    une unité de commande (3),
    dans lequel l'unité de commande (3) détermine des changements du courant de fonctionnement de l'unité de compresseur (2),
    dans lequel l'unité de commande (3) fait fonctionner l'unité de dispositif de chauffage (4) d'une manière prédéfinie en fonction de changements du courant de fonctionnement,
    caractérisé en ce qu'un courant de fonctionnement est détecté dans de multiples intervalles de temps prédéfinis et une valeur de sortie représentant le courant moyen dans chaque intervalle de temps est sortie, dans lequel les valeurs de sortie sont traitées en tant que valeurs matricielles, dans lequel les valeurs de sortie sont entrées dans une matrice d'état les unes après les autres,
    dans lequel un déterminant est calculé et sorti après que la matrice d'état a été remplie, dans lequel des valeurs de sortie supplémentaires représentant le courant de fonctionnement moyen dans des intervalles de temps définis sont sorties, dans lequel les valeurs de sortie sont traitées en tant que valeurs matricielles supplémentaires, dans lequel les valeurs de sortie sont entrées dans des matrices d'état supplémentaires les unes après les autres, dans lequel les valeurs de sortie de chaque intervalle de temps sont traitées en tant qu'une matrice d'état,
    dans lequel un déterminant est calculé et sorti pour chaque matrice d'état, et
    dans lequel une matrice de niveau de glace est établie, dans lequel la matrice de niveau de glace est une matrice YxY, dans lequel les déterminants sont insérés dans un ordre chronologique,
    détection du courant de fonctionnement,
    fonctionnement de l'unité de dispositif de chauffage (4) en fonction du courant de fonctionnement détecté.
EP17161322.7A 2017-03-16 2017-03-16 Réfrigérateur ayant un mode sans givre avancé Active EP3376142B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17161322.7A EP3376142B1 (fr) 2017-03-16 2017-03-16 Réfrigérateur ayant un mode sans givre avancé
TR2017/04723A TR201704723A2 (tr) 2017-03-16 2017-03-29 Geli̇şmi̇ş karlanma önleyi̇ci̇ i̇şleyi̇şe sahi̇p soğutucu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17161322.7A EP3376142B1 (fr) 2017-03-16 2017-03-16 Réfrigérateur ayant un mode sans givre avancé

Publications (2)

Publication Number Publication Date
EP3376142A1 EP3376142A1 (fr) 2018-09-19
EP3376142B1 true EP3376142B1 (fr) 2019-09-25

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TR (1) TR201704723A2 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4104888A (en) 1977-01-31 1978-08-08 Carrier Corporation Defrost control for heat pumps
US5692385A (en) 1996-01-26 1997-12-02 General Electric Company System and method initiating defrost in response to speed or torque of evaporator motor
US20080073376A1 (en) 2006-04-12 2008-03-27 Imi Cornelius Inc. Frozen carbonated modulating dispensing valve and/or flavor injection
CA2776382C (fr) 2009-10-02 2018-01-30 The Controls Group, Inc. Retrait d'une substance congelee accumulee a partir d'une unite de refroidissement
KR101940509B1 (ko) * 2012-08-01 2019-01-22 삼성전자주식회사 냉각장치 및 그 제어방법
CN103913042B (zh) * 2013-01-02 2016-08-31 Lg电子株式会社 冰箱、家电及其操作方法
KR101817816B1 (ko) * 2013-11-05 2018-02-22 엘지전자 주식회사 냉장고
KR102220911B1 (ko) * 2014-01-06 2021-02-25 엘지전자 주식회사 냉장고, 및 홈 어플라이언스
KR102173371B1 (ko) * 2014-01-06 2020-11-03 엘지전자 주식회사 냉장고, 및 홈 어플라이언스

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
EP3376142A1 (fr) 2018-09-19
TR201704723A2 (tr) 2018-09-21

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