EP3527917A1 - Kühlvorrichtung zum abtauen - Google Patents

Kühlvorrichtung zum abtauen Download PDF

Info

Publication number
EP3527917A1
EP3527917A1 EP18157172.0A EP18157172A EP3527917A1 EP 3527917 A1 EP3527917 A1 EP 3527917A1 EP 18157172 A EP18157172 A EP 18157172A EP 3527917 A1 EP3527917 A1 EP 3527917A1
Authority
EP
European Patent Office
Prior art keywords
bimetals
cooling apparatus
voltage
evaporator coil
evaporator
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.)
Withdrawn
Application number
EP18157172.0A
Other languages
English (en)
French (fr)
Inventor
Mert Serdar BILGIN
Yusuf AK
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 EP18157172.0A priority Critical patent/EP3527917A1/de
Publication of EP3527917A1 publication Critical patent/EP3527917A1/de
Withdrawn legal-status Critical Current

Links

Images

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

Definitions

  • This invention refers to a cooling apparatus for defrosting after detecting frost according to claim 1.
  • White goods are electronic devices such as air conditioners and refrigerators that are mostly used to reduce temperature.
  • a common problem experienced by such white goods is the formation of frost on the indoor unit coil.
  • Defrosting is the process of removing or freeing the frost formed on the indoor unit coil.
  • Various methods for defrosting are known in the prior art such as providing separate evaporator coils, reversing the cooling cycle, wherein the indoor unit is heated instead of cooled and outdoor unit is cooled instead of heating.
  • reversing of the cooling cycle manually causes increase in power consumption over the time and reversing of the cooling cycle automatically increases electrical and mechanical complexity.
  • the defrosting method has to avoid the reversing of the cooling cycle manually or automatically.
  • Prior art US 4741175 A discloses a refrigerator that includes a freezer compartment, a fresh food compartment and an evaporator chamber. Air is circulated between the chamber and each compartment. Air from the fresh food compartment is returned through a return duct.
  • the evaporator has one section in the evaporator chamber and another section in the return air duct so that the fresh food compartment return air passes over both of the evaporator sections while the freezer return air passes over only the evaporator section in the evaporator chamber.
  • FIG. 6266969 B1 Another prior art US 6266969 B1 relates to a device for rapidly defrosting a refrigerator compartment, such as a freezer compartment or the like, said compartment comprising a plurality of adjacent walls, in correspondence with at least one of said walls there being arranged a hairpin coil evaporator for a static refrigerator, or a part of an evaporator of forced-air type, within a refrigeration circuit comprising a motor-compressor unit, said device comprising heating means arranged in correspondence with at least one of said walls and/or with the evaporator, said heating means being electrically powered via an electrical supply circuit associated with the refrigerator; the heating means are at least one resistance element of PTF (polymer thin/thick film) type.
  • PTF polymer thin/thick film
  • the before mentioned object is solved by a cooling apparatus for defrosting that enables breaking of the frost formed on the evaporator coil after detecting the frost and thereby avoiding reversing of the cooling cycle manually or automatically according to claim 1.
  • the present invention refers to a cooling apparatus for defrosting after detecting frost.
  • the cooling apparatus preferably comprises of an evaporator, an evaporator coil, a compressor, a condenser, a condenser coil and a receiver dryer.
  • the cooling apparatus further includes plurality of bimetals, wherein the bimetals are placed on the evaporator coil.
  • the bimetals are activated by applying voltage from a power supply. Further, the bimetals are configured to bend according to the application of voltage and thereby applying pressure on frosted surface formed on the evaporator coil and breaking the frost formed on the evaporator coil.
  • the bimetals and evaporator coil are perpendicular to each other.
  • the bimetals are arranged in the form of loop.
  • the application of voltage on the bimetals is controlled by a microcontroller unit and the application of voltage on the bimetals varies according to degree of frosting.
  • Fig. 1 illustrates exemplary model of a cooling apparatus 100 that indicates position of bimetals when there is no frost, according to the present invention.
  • the present invention preferably comprises of an evaporator 1, an evaporator coil, a compressor 4, a condenser 5, a condenser coil 6 and a receiver dryer 7.
  • the cooling apparatus further includes plurality of bimetals 3, wherein the bimetals are placed on the evaporator coil 2.
  • the bimetals 3 and the evaporator coil 2 are perpendicular to each other and the bimetals 3 are arranged in the form of loop.
  • the bimetals 3 are activated by applying voltage from a power supply 10.
  • the bimetals 3 are configured to bend according to the application of voltage and thereby applying pressure on frosted surface formed on the evaporator coil 2 and breaking the ice formed on the evaporator coil 2.
  • a microcontroller unit (MCU) 8 controls the application of the voltage on the evaporator coil varies according to the degree of icing.
  • the MCU 8 triggers relays 9 and thereby activates bimetals by applying constant voltage according to the degree of frosting.
  • Fig. 1 shows the position of the bimetals 3 when there is no frost on the evaporator coil 2. Since no frost is detected on the evaporator coil 2, voltage is not applied on the bimetals 3 and therefore bimetals 3 remain in the same position without any bending.
  • Fig. 1(a) illustrates an exemplary model of a cooling apparatus 100 (a) that shows bending of bimetals when low voltage is applied, according to the present invention.
  • a frost breaking is performed automatically only after detecting frosting instead of melting the frost. That is, the cooling cycle is not reversed manually or automatically for defrosting.
  • the cooling apparatus utilizes bimetals 3, MCU 8, relays 9 and power supply 10. After detecting low degree of frost on the evaporator coil 2, the MCU 8 triggers the relays 9 and thereby activates bimetals 3(a) by applying a low voltage 10(a) on the bimetals 3(a).
  • the bimetals 3 are heat sensitive material and have a certain resistance value and therefore start bending 3 (a) with the application of low voltage 10(a).
  • the bimetals 3 (a) applies pressure on frost on the evaporator coil 2 and breaks the frost.
  • the bending of bimetals is less 3(a) as the applied voltage 10 (a) and the degree of frosting is less.
  • FIG. 1(b) illustrates an exemplary model of a cooling apparatus 100 (b) that shows bending of bimetals when medium voltage is applied, according to the present invention.
  • the MCU 8 After detecting frost on the evaporator coil even after applying voltage 10(a) on the bimetals, the MCU 8 triggers the relays 9 and thereby activates bimetals 3 (b) by applying slightly greater voltage 10(b) on the bimetals 3(b). The bimetals starts bending 3(b) more with the application of voltage 10(b) in a curved manner.
  • bimetals 3(b) apply more pressure on frost on the evaporator coil 2 and thereby breaking the frost.
  • the bending of bimetals 3(b) seems to be more compared to the bending of bimetals 3(a) applied with low voltage 10 (a).
  • FIG. 1 (c) illustrates an exemplary model of a cooling apparatus 100 (c) that shows bending of bimetals when high voltage is applied in a circular manner, according to the present invention.
  • the MCU 8 triggers the relays 9 and thereby activates bimetals 3 (c) by applying high voltage 10(c) on the bimetals 3(c) in a circular manner.
  • the bimetals starts bending 3(c) deeper with the application of voltage 10(c). Therefore, the bimetals 3(c) applies high pressure on frost on the evaporator coil 2 and thereby breaks the frost. Therefore, depending upon the degree of frosting detected the voltage is controlled by the MCU and voltage is applied according on the bimetals for breaking the frost.
  • Such a cooling apparatus 100(a, b, c) enables breaking of the frost on the evaporator coil 2 and thereby avoids reversing of the cooling cycle manually.
  • the application of voltage on the bimetals 10(a, b, c) causes the bimetals to bend 3(a, b, c) accordingly and thereby applies pressure on the frosted surface of the evaporator coil 2 and breaks the frost formed on the evaporator coil 2.
  • the bimetals 3 are arranged in such a form on the evaporator coil (2) that the bimetals can change its form from straight to curved and into circular depending on the applied voltage. Hence reversing of the cooling cycle manually or automatically for defrosting is avoided. Additionally, implementation of such a cooling apparatus is simple and effective.
  • Fig. 2 illustrates a block diagram of a defrosting method 200, according to the present invention.
  • the frost condition is detected 11 and depending upon the degree of frosting the MCU starts defrost algorithm 12.
  • the relays are triggered by the MCU 13 and the bimetals are activated 14.
  • the bimetals bends according to the applied voltage 15 and applies pressure on frost on the evaporator coil and thereby breaks the frost 16.
  • the cooling apparatus preferably comprises of an evaporator 1, an evaporator coil 2, a compressor 4, a condenser 5, a condenser coil 6 and receiver dryer 7.
  • the cooling apparatus further includes plurality of bimetals 3, wherein the bimetals 3 are placed on the evaporator coil 2.
  • the bimetals 3 are activated by applying voltage from a power supply 10.
  • the bimetals 3 are configured to bend according to the application of voltage and thereby applying pressure on frosted surface formed on the evaporator coil 2 and breaking the ice formed on the evaporator coil 2.
  • the subject-matter of the application provides a defrosting method without melting of the frost and without avoiding reversing of the cooling cycle manually or automatically.

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)
EP18157172.0A 2018-02-16 2018-02-16 Kühlvorrichtung zum abtauen Withdrawn EP3527917A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18157172.0A EP3527917A1 (de) 2018-02-16 2018-02-16 Kühlvorrichtung zum abtauen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18157172.0A EP3527917A1 (de) 2018-02-16 2018-02-16 Kühlvorrichtung zum abtauen

Publications (1)

Publication Number Publication Date
EP3527917A1 true EP3527917A1 (de) 2019-08-21

Family

ID=61231136

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18157172.0A Withdrawn EP3527917A1 (de) 2018-02-16 2018-02-16 Kühlvorrichtung zum abtauen

Country Status (1)

Country Link
EP (1) EP3527917A1 (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7507775U (de) * Rautenbach, Robert, Prof. Dr.-Ing.
DD117279A1 (de) * 1975-01-20 1976-01-05
US4741175A (en) 1987-03-17 1988-05-03 General Electric Company Auto defrost refrigerator
US6266969B1 (en) 1998-11-27 2001-07-31 Whirlpool Corporation Device for defrosting evaporator in a refrigerator compartment
RU2193933C2 (ru) * 2000-12-13 2002-12-10 Открытое акционерное общество "Ракетно-космическая корпорация "Энергия" им. С.П. Королева" Устройство для разрушения льда
WO2006081180A2 (en) * 2005-01-24 2006-08-03 The Trustees Of Dartmoutn College Pulse electrothermal and heat-storage ice detachment apparatus and methods
EP3012187A1 (de) * 2014-10-23 2016-04-27 The Boeing Company Aktiv gesteuerte superhydrophobe oberflächen
WO2017192568A1 (en) * 2016-05-03 2017-11-09 Carrier Corporation Intelligent voltage control for electric heat and defrost in transport refrigeration system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7507775U (de) * Rautenbach, Robert, Prof. Dr.-Ing.
DD117279A1 (de) * 1975-01-20 1976-01-05
US4741175A (en) 1987-03-17 1988-05-03 General Electric Company Auto defrost refrigerator
US6266969B1 (en) 1998-11-27 2001-07-31 Whirlpool Corporation Device for defrosting evaporator in a refrigerator compartment
RU2193933C2 (ru) * 2000-12-13 2002-12-10 Открытое акционерное общество "Ракетно-космическая корпорация "Энергия" им. С.П. Королева" Устройство для разрушения льда
WO2006081180A2 (en) * 2005-01-24 2006-08-03 The Trustees Of Dartmoutn College Pulse electrothermal and heat-storage ice detachment apparatus and methods
EP3012187A1 (de) * 2014-10-23 2016-04-27 The Boeing Company Aktiv gesteuerte superhydrophobe oberflächen
WO2017192568A1 (en) * 2016-05-03 2017-11-09 Carrier Corporation Intelligent voltage control for electric heat and defrost in transport refrigeration system

Similar Documents

Publication Publication Date Title
CA2409732A1 (en) Reduced energy refrigerator defrost method and apparatus
CN101512253B (zh) 制冷机和操作该制冷机的方法
WO2011081098A1 (ja) 保冷庫
CN108800747A (zh) 冰箱及其控制方法
CN108800704A (zh) 冰箱及其控制方法
EP4053479A2 (de) Kühlschrank
EP1004835A3 (de) Vorrichtung zum schnellen Abtauen eines Kühlschrankfaches, wie ein Gefrierfach oder dergleichen
CN111609634A (zh) 风冷冰箱及其除霜控制方法
US3899895A (en) Automatic defrosting control system
EP3527917A1 (de) Kühlvorrichtung zum abtauen
WO2011000706A3 (en) A refrigerator operating independently of the ambient temperature
CN110887283B (zh) 计算机可读存储介质、制冷设备及其化霜方法
JP6109518B2 (ja) 冷却庫
CN114746707A (zh) 食用肉熟化模块及冰箱
CN109696007B (zh) 家用制冷器具和用于运行这种家用制冷器具的方法
US2297970A (en) Forced air circulation refrigeration system
JP2018031487A (ja) 冷凍・冷蔵ショーケース
EP1020149A3 (de) Verfahren und Vorrichtung zum Steuern der Kältebedingungen in Kühleinheiten
WO2010133516A3 (en) A cooling device heated to prevent frosting
CN106996675A (zh) 制冷温控智能除霜控制装置
US2541145A (en) Defrosting control
DE102011088656A1 (de) Kältegerät mit einem statischen Verdampfer und einem dynamischen Verdampfer
EP2437008A1 (de) Kühlanwendung mit zwei in Serie geschalteten Verdampfern und Verfahren zur Steuerung einer solchen Vorrichtung
KR20060014483A (ko) 냉장고용 증발기의 제상장치
JP2020012600A (ja) 冷却貯蔵庫

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200217

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20210303