WO2014067714A2 - Dispositif de refroidissement comprenant un commutateur bimétallique - Google Patents

Dispositif de refroidissement comprenant un commutateur bimétallique Download PDF

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Publication number
WO2014067714A2
WO2014067714A2 PCT/EP2013/069724 EP2013069724W WO2014067714A2 WO 2014067714 A2 WO2014067714 A2 WO 2014067714A2 EP 2013069724 W EP2013069724 W EP 2013069724W WO 2014067714 A2 WO2014067714 A2 WO 2014067714A2
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
compressor
heater
fresh food
food compartment
Prior art date
Application number
PCT/EP2013/069724
Other languages
English (en)
Other versions
WO2014067714A3 (fr
Inventor
Turgay Ercan
Erhan Kacmaz
Original Assignee
Arcelik Anonim Sirketi
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 Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to CN201380057365.1A priority Critical patent/CN104981671B/zh
Priority to EP13766296.1A priority patent/EP2914912B1/fr
Publication of WO2014067714A2 publication Critical patent/WO2014067714A2/fr
Publication of WO2014067714A3 publication Critical patent/WO2014067714A3/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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/006—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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/02—Refrigerators including a heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/34—Temperature balancing devices

Definitions

  • the present invention relates to a mechanically controlled cooling device that comprises a bimetal switch .
  • the operation of the compressor is generally controlled by means of thermostatic switches.
  • the thermostatic switch positioned so as to measure the fresh food compartment temperature operates the compressor in a temperature range predetermined by the producer. At low ambient temperatures, the thermostatic switch cannot reach the compressor activation temperature for a long period of time and cannot operate the compressor. Meanwhile, the freezing compartment temperature increases rapidly even though the temperature of the fresh food compartment remains within the ideal range. After a period of time, the freezing compartment temperature reaches critical values and results in thawing of the foodstuffs stored in the compartment.
  • a heater is disposed on and/or in the vicinity of the thermostatic switch that controls the operation of the compressor and the thermostatic switch is provided to be raised to the required temperature for activating the compressor.
  • the operation of these heaters is controlled by various methods but in some situations the heater can operate even if not required since the freezing compartment temperature cannot be detected directly with these methods. This increases energy consumption.
  • a refrigerator with two compartments comprising a bimetal switch and a heater
  • the heater is disposed in the vicinity of the fresh food compartment.
  • the bimetal switch is situated outside the body of the fresh food compartment and controls the operation of the heater according to the outside temperature.
  • a cooling device comprising two heaters connected in series, situated in the vicinity of the fresh food compartment and an outside temperature sensor connected in parallel to these heaters.
  • the outside temperature sensor which is bimetal, changes the current supplied to the heaters depending on the outside temperature by being activated or deactivated.
  • the aim of the present invention is the realization of a mechanically controlled cooling device wherein effective refrigeration can be performed under low ambient temperature conditions.
  • the cooling device realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a fresh food compartment, a freezing compartment, and an evaporator and a compressor for each compartment.
  • a thermostatic switch that controls the operation of the compressor is situated in the vicinity of the fresh food compartment. The thermostatic switch activates and deactivates the compressor at temperatures predetermined by the producer.
  • the compressor while the compressor is not active, when the temperature detected by the thermostatic switch reaches the compressor activation temperature predetermined by the producer, the compressor is activated and while the compressor is active, when the temperature detected by the thermostatic switch reaches the compressor deactivation temperature predetermined by the producer, the compressor is deactivated.
  • the fresh food compartment temperature is provided to be kept within a predetermined range.
  • the bimetal switch completes the circuit by elongating when its temperature reaches an upper limit temperature predetermined by the producer and switches off the circuit when its temperature reaches a lower limit temperature predetermined by the producer. Accordingly, the operation of the heater and hence the compressor is controlled depending on the freezing compartment conditions.
  • both compartments are provided to be cooled effectively even at low ambient temperatures.
  • Figure 1 – is the schematic view of the cooling device of the present invention.
  • Figure 2 – is the perspective view of the thermostatic switch.
  • the cooling device (1) comprises a fresh food compartment (2) wherein foodstuffs are placed to be cooled, a freezing compartment (3) kept at lower temperatures than the fresh food compartment (2), wherein foodstuffs are placed to be frozen, a compressor (4) that compresses and circulates the refrigerant fluid in the refrigeration cycle, a fresh food compartment evaporator (5) that provides the interior of the fresh food compartment (2) to be cooled, a freezing compartment evaporator (6) that provides the interior of the freezing compartment (3) to be cooled, at least one heater (7) disposed on and/or in the vicinity of the fresh food compartment evaporator (5) and a thermostatic switch (8) disposed on and/or in the vicinity of the fresh food compartment evaporator (5) and controlling the operation of the compressor (4) depending on the temperature value detected thereby ( Figure 1).
  • the cooling device (1) of the present invention furthermore comprises a bimetal switch (9) disposed on and/or in the vicinity of the freezing compartment evaporator (6), connected in series to the heater (7) and controlling the operation of the heater (7) depending on the temperature value detected thereby.
  • a bimetal switch (9) disposed on and/or in the vicinity of the freezing compartment evaporator (6), connected in series to the heater (7) and controlling the operation of the heater (7) depending on the temperature value detected thereby.
  • the temperature of the freezing compartment (3) increases and the heater (7) is activated by means of the bimetal switch (9).
  • the heater (7) provides the thermostatic switch (8) to activate the compressor (4) by increasing the temperature in the vicinity of the fresh food compartment (2) whereat the thermostatic switch (8) is disposed.
  • the compressor (4) operates depending on the thermostatic switch (8) and the heater (7) operates depending on the bimetal switch (9).
  • the heater (7) is also operated during almost the entire time period that the compressor (4) operates.
  • the temperature of the freezing compartment (3) is lowered, thus preventing thawing/melting of the foodstuffs inside the freezing compartment (3), but also the foodstuffs inside the fresh food compartment (2) are prevented from freezing. Consequently, both compartments (2, 3) are provided to operate effectively without utilizing any electronic system. Ease of production and cost advantage are maintained by controlling the cooling device (1) with the thermostatic switch (8) and the bimetal switch (9).
  • the thermostatic switch (8) activates the compressor (4) when the detected temperature (T R ) reaches the compressor (4) activation temperature (T Rcut-in ) predetermined by the producer while the compressor (4) is deactivated and deactivates the compressor (4) when the detected temperature (T R ) reaches the compressor (4) deactivation temperature (T Rcut-out ) predetermined by the producer while the compressor (4) is activated.
  • T R activation temperature
  • T Rcut-out the temperature of the fresh food compartment (2) is provided to be kept within a predetermined range and the foodstuffs preserved inside the fresh food compartment (2) are prevented from getting warm and/or freezing.
  • the bimetal switch (9) provides the heater (7) to operate by elongating and completing the circuit when its temperature (T F ) reaches an upper limit temperature (T Fmax ) predetermined by the producer while the heater (7) is not activated.
  • the bimetal switch (9) provides the heater (7) to be deactivated by getting shorter and cutting off the circuit when its temperature (T F ) reaches a lower limit temperature (T Fmin ) predetermined by the producer while the heater (7) is activated.
  • the selection of the materials used in the bimetal switch (9) is made according to the lower limit temperature (T Fmin ) and the upper limit temperature (T Fmax ) intended to be reached.
  • the temperature (T R ) detected by the thermostatic switch (8) increases when the heater (7) is activated and the compressor (4) is activated when the detected temperature (T R ) reaches the compressor (4) activation temperature (T Rcut-in ) predetermined by the producer.
  • the temperature (T R ) detected by the thermostatic switch (8) decreases quickly and the compressor (4) is deactivated when the detected temperature (T R ) reaches the compressor (4) deactivation temperature (T Rcut-out ) predetermined by the producer. Consequently, the compressor (4) is provided to be controlled indirectly depending on the conditions of the freezing compartment (3). Thus, the refrigeration effectiveness of the cooling device (1) is increased.
  • the upper limit temperature (T Fmax ) predetermined by the producer is -10 o C and the lower limit temperature (T Fmin ) is -22 o C.
  • the compressor (4) activation temperature (T Rcut-in ) predetermined by the producer is + 5 C and the compressor (4) deactivation temperature (T Rcut-out ) is + 1 C. In these settings, when the outside temperature is between 0 o C and 5 o C, the thermostatic switch (8) cannot reach the compressor (4) activation temperature (T Rcut-in ) predetermined by the producer and the temperature of the freezing compartment (3) increases.
  • the bimetal switch (9) When the temperature (T F ) of the bimetal switch (9) increases to -10 o C, the bimetal switch (9) activates the heater (7) by completing the circuit. Upon operation of the heater (7), the temperature (T R ) detected by the thermostatic switch (8) also increases and the compressor (4) is activated when the detected temperature (T R ) reaches +5 o C. Afterwards, the temperature (T F ) of the bimetal switch (9) starts to decrease again and the temperature of the freezing compartment (3) reaches the ideal level. Accordingly, the unfavorable conditions originating from low ambient temperature are eliminated and an effective refrigeration is realized.
  • the heater (7) is disposed in the vicinity of the thermostatic switch (8).
  • the changes in the working conditions of the heater (7) are provided to be reflected quickly to the thermostatic switch (8).
  • the thermostatic switch (8) comprises a command portion (10) wherein the switching operation is performed and a sensor portion (11) connected to the command portion (10) by means of a wire and which provides the detection of the temperature.
  • the sensor portion (11) can be easily moved and situated as desired.
  • the sensor portion (11) can be disposed in the vicinity of the heater (7). Consequently, the reactions of the heater (7) can be detected quickly but also the distance between the compressor (4) and the command portion (10) is shortened ( Figure 2).

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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

La présente invention porte sur un dispositif de refroidissement commandé mécaniquement (1), dans lequel dispositif le processus de réfrigération est effectué efficacement, et lequel comprend un compartiment d'aliments frais (2) dans lequel des produits alimentaires sont disposés afin d'être refroidis, un compartiment de congélation (3) maintenu à des températures inférieures à celle du compartiment d'aliments frais (2), dans lequel des produits alimentaires sont disposés afin d'être congelés, un compresseur (4) qui comprime le fluide réfrigérant et qui le fait circuler dans le cycle de réfrigération, un évaporateur de compartiment d'aliments frais (5) qui constitue l'intérieur du compartiment d'aliments frais (2) à refroidir, un évaporateur de compartiment de congélation (6) qui constitue l'intérieur du compartiment de congélation (3) à refroidir, au moins un élément chauffant (7) disposé sur l'évaporateur de compartiment d'aliments frais (5) et/ou au voisinage de celui-ci et un commutateur thermostatique (8) disposé sur l'évaporateur de compartiment d'aliments frais (5) et/ou au voisinage de celui-ci, commandant le fonctionnement du compresseur (4) en fonction de la valeur de température détectée par celui-ci.
PCT/EP2013/069724 2012-10-30 2013-09-23 Dispositif de refroidissement comprenant un commutateur bimétallique WO2014067714A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201380057365.1A CN104981671B (zh) 2012-10-30 2013-09-23 包括双金属开关的冷却装置
EP13766296.1A EP2914912B1 (fr) 2012-10-30 2013-09-23 Dispositif de refroidissement comprenant un commutateur bimétallique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TRA2012/12426 2012-10-30
TR201212426 2012-10-30

Publications (2)

Publication Number Publication Date
WO2014067714A2 true WO2014067714A2 (fr) 2014-05-08
WO2014067714A3 WO2014067714A3 (fr) 2014-07-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/069724 WO2014067714A2 (fr) 2012-10-30 2013-09-23 Dispositif de refroidissement comprenant un commutateur bimétallique

Country Status (2)

Country Link
EP (1) EP2914912B1 (fr)
WO (1) WO2014067714A2 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1026453A (ja) 1996-07-10 1998-01-27 Matsushita Refrig Co Ltd 冷蔵庫
CN1584474A (zh) 2003-08-22 2005-02-23 乐金电子(天津)电器有限公司 电冰箱温控装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724576A (en) * 1951-07-13 1955-11-22 Gen Motors Corp Refrigerating apparatus
IT1247626B (it) * 1990-11-05 1994-12-28 Zanussi Elettrodomestici Apparecchio refrigerante con singolo controllo termostatico della temperatura
SI22068A (sl) * 2005-05-19 2006-12-31 Gorenje Gospodinjski Aparati, D.D. Regulacija hladilno zamrzovalnega aparata
PL2175216T3 (pl) * 2008-10-09 2015-09-30 Whirlpool Co Chłodziarka jednodrzwiowa i sposób sterowania taką chłodziarką

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1026453A (ja) 1996-07-10 1998-01-27 Matsushita Refrig Co Ltd 冷蔵庫
CN1584474A (zh) 2003-08-22 2005-02-23 乐金电子(天津)电器有限公司 电冰箱温控装置

Also Published As

Publication number Publication date
EP2914912B1 (fr) 2016-09-07
CN104981671A (zh) 2015-10-14
WO2014067714A3 (fr) 2014-07-03
EP2914912A2 (fr) 2015-09-09

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