KR100364991B1 - Apparatus and method for preventing freezing of damper of refrigerator - Google Patents

Apparatus and method for preventing freezing of damper of refrigerator Download PDF

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Publication number
KR100364991B1
KR100364991B1 KR1019970032202A KR19970032202A KR100364991B1 KR 100364991 B1 KR100364991 B1 KR 100364991B1 KR 1019970032202 A KR1019970032202 A KR 1019970032202A KR 19970032202 A KR19970032202 A KR 19970032202A KR 100364991 B1 KR100364991 B1 KR 100364991B1
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South Korea
Prior art keywords
damper
refrigerator
compartment
temperature
freezing
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KR1019970032202A
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Korean (ko)
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KR19990009712A (en
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김재호
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주식회사 엘지이아이
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Priority to KR1019970032202A priority Critical patent/KR100364991B1/en
Publication of KR19990009712A publication Critical patent/KR19990009712A/en
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    • 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
    • F25D21/04—Preventing the formation of frost or condensate
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • 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
    • F25D21/002—Defroster control
    • F25D21/008—Defroster control by timer
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00—Control issues
    • F25D2600/02—Timing
    • 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
    • F25D2600/00—Control issues
    • F25D2600/06—Controlling according to a predetermined profile
    • 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

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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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

PURPOSE: An apparatus and a method for preventing freezing of damper of refrigerator are provided to prevent freezing of the damper in advance. CONSTITUTION: A damper freezing preventing heater(34) is included to a refrigerator to work for fixed time to prevent freezing of an electronic damper(35) when a door of a refrigerator compartment is sensed to be closed. A microcomputer(41) senses closing of the door and turns on/off the damper freezing preventing heater. The damper freezing preventing heater is installed between baffles of the refrigerator compartment.

Description

냉장고 댐퍼 결빙 방지 장치 및 방법Refrigerator damper freezing prevention device and method

본 발명은 냉장고의 냉장실 온도를 조절하는 댐퍼 결빙방지 장치 및 방법에관한 것으로, 특히 냉장실 도어를 열고 닫은 후 일정시간 댐퍼결빙방지히터를 구동하여 댐퍼가 결빙되어 동작불량이 발생하는 것을 방지하고자 한 냉장고 댐퍼 결빙 방지 장치 및 방법에 관한 것이다.The present invention relates to a damper freezing prevention device and method for controlling the temperature of the refrigerator compartment of the refrigerator, in particular, a refrigerator intended to prevent the operation of the damper by freezing the damper by driving the damper freezing prevention heater for a certain time after opening and closing the refrigerator door. A damper freezing prevention device and method.

도1은 냉장고의 블록 구성도로서, 이에 도시된 바와같이 냉동실 및 냉장실의 냉각을 담당하는 압축기(13)와; 냉장실에 냉기 공급 또는 차단함으로써 냉장실의 온도를 조절하는 냉장실 댐퍼(12)와; 냉기순환 역할을 하여 냉기를 강제송풍하는 냉동팬을 구동시키는 냉동팬모터(10)와: 저온저압인 액체상태의 냉매를 기체상태로 변화시키면서 외부의 열을 흡수하는 증발기(11)와: 냉동실 문닫힘을 감지하는 냉장실도어스위치(15)와; 냉동실 문닫힘을 감지하는 냉동실도어스위치(14)로 구성된다.1 is a block diagram of a refrigerator, and as shown therein, a compressor 13 for cooling the freezer compartment and the refrigerating compartment; A refrigerator compartment damper 12 for controlling the temperature of the refrigerator compartment by supplying or blocking cold air to the refrigerator compartment; And a refrigeration fan motor (10) for driving a refrigeration fan for forced cooling by acting as a cold air circulation: an evaporator (11) for absorbing external heat while changing a refrigerant of low temperature and low pressure into a gaseous state; A refrigerating chamber door switch 15 for detecting closing; It is composed of a freezer door switch 14 for detecting the freezer door closing.

도2는 종래 냉장고의 회로도로서, 이에 도시된 바와같이 냉장실 문닫힘에 따라 온/오프되는 냉장실도어스위치(21)와; 상기 냉장실도어스위치(21)의 온/오프에따라 냉장실의 문닫힘을 감지하는 포토커플러(PC1)와 증발기에서 토출된 저온, 저압의 냉매증기를 흡입하여 이를 압축함으로써 고온, 고압이 증기로 만드는 압축기 (23)와; 냉장실의 냉기 공급과 차단으로 냉장실의 온도를 조절할 수 있는 냉장실 전자식 댐퍼(Damper:24)와; 냉기순환 역할을 하여 상기 증발기에서 발생된 냉기를 강제송풍 하는 냉동면(Fan)을 구동시키는 냉동팬 모터(22)와; 냉장실 온도를 감지하는 냉장실 센서(TH2)와; 냉동실의 온도를 감지하는 냉동실 센서(TH1)와; 상기 냉장실 센서(TH2) 및 냉동실 센서(TH1)에서 감지한 온도를 입력받아 그에 해당하는 제어신호를 출력하는 마이크로컴퓨터(29)와; 상기 마이크로컴퓨터(29)의 제어신호를 반전하는 인버터부(28)와; 상기 인버터부(2B)에서 반전된 신호에 의해 구동되는제1,제2 릴레이부(26),(27)로 구성된다.2 is a circuit diagram of a conventional refrigerator, as shown in the refrigerator compartment door switch 21 which is turned on / off according to the refrigerating compartment door closing; The compressor which makes high temperature and high pressure steam by inhaling and compressing the low temperature and low pressure refrigerant vapor discharged from the photocoupler PC1 and the evaporator which detects the door closing of the refrigerating chamber according to the on / off of the refrigerating chamber door switch 21. 23; A refrigerator compartment electronic damper (Damper) 24 capable of controlling the temperature of the refrigerator compartment by supplying and blocking cold air from the refrigerator compartment; A refrigeration fan motor 22 that serves as a cold air circulation and drives a freezing surface Fan for forcedly cooling cold air generated in the evaporator; A refrigerator compartment sensor (TH2) for detecting a refrigerator compartment temperature; A freezer compartment sensor TH1 for sensing a temperature of the freezer compartment; A microcomputer 29 which receives a temperature detected by the refrigerating compartment sensor TH2 and the freezing compartment sensor TH1 and outputs a control signal corresponding thereto; An inverter unit 28 for inverting the control signal of the microcomputer 29; The first and second relay units 26 and 27 are driven by signals inverted by the inverter unit 2B.

이와같이 구성된 종래 냉장고의 동작을 설명한다.The operation of the conventional refrigerator configured as described above will be described.

냉장고의 냉동실센서(TH1)의 감지온도가 설정온도보다 높으면 압축기(23)와 연결된 제1 릴레이부(26)를 동작시켜 상기 압축기(23)를 운전시키고, 이와는 반대로 냉동실센서(TH1)의 온도가 기설정온도보다 낮으면 압축기(23)를 정지시켜 온도를 조절한다.When the detected temperature of the freezer compartment sensor TH1 of the refrigerator is higher than the set temperature, the first relay unit 26 connected to the compressor 23 is operated to operate the compressor 23, and conversely, the temperature of the freezer compartment sensor TH1 is increased. If the temperature is lower than the preset temperature, the compressor 23 is stopped to adjust the temperature.

이때, 냉장실에 장착된 냉동팬 모터(22)는 압축기모터(23)와 연동하여 증발기에서 발생된 냉기를 강제 송풍하는 냉동팬을 구동시켜 냉기순환역활을 한다.At this time, the refrigerating fan motor 22 mounted in the refrigerating chamber drives the refrigerating fan forcibly blowing cold air generated in the evaporator in cooperation with the compressor motor 23 to serve as a cold air circulation.

여기서, 냉장실 온도조절은 냉장실에 설치된 댐퍼(24)를 전개 또는 전폐시켜 온도를 조절하는 데, 냉장실 센서(TH2)의 감지온도가 높으면 전자식댐퍼(24)와 연결된 제2 릴레이부(27)를 동작시켜 상기 전자식댐퍼(24)와 연동하는 리드스위치 (25)의 상태를 감지하여 댐퍼모터를 정지시킴으로써 상기 전자식댐퍼(24)는 전개상태가 된다.Here, the temperature control of the refrigerator compartment adjusts the temperature by developing or closing the damper 24 installed in the refrigerator compartment. When the sensing temperature of the refrigerator compartment sensor TH2 is high, the second relay unit 27 connected to the electronic damper 24 is operated. By detecting the state of the reed switch 25 in conjunction with the electronic damper 24 to stop the damper motor, the electronic damper 24 is in an expanded state.

상기 전자식댐퍼(24)가 전개되면 냉동실의 차가운 냉기가 냉장실로 이동되어 냉장실이 차가워지고, 이에따라 냉장실 센서(TH2)의 감지온도가 낮아지므로 상기 댐퍼(24)를 동작시키는 모터와 연동되는 리드스위치(25)의 상태에 따라 상기 모터를 정지시키면 댐퍼(24)는 전폐상태가 되며, 이와같은 동작을 반복하여 냉장실 온도를 조절한다.When the electronic damper 24 is deployed, the cold switch of the freezer compartment is moved to the refrigerating compartment, and thus the refrigerating compartment becomes cold, and thus the sensing temperature of the refrigerating compartment sensor TH2 is lowered, so that the reed switch interlocked with the motor for operating the damper 24 ( When the motor is stopped according to the state of 25, the damper 24 is in a fully closed state, and this operation is repeated to adjust the refrigerating chamber temperature.

그러나, 상기와 같이 동작하는 종래 장치는 냉장실 도어를 열 때 외부의 습한 공기 유입이나 따뜻한 식품을 냉장실 고내에 넣었을 때 냉동실의 차가운 냉기와 냉장실의 습한 공기가 만나는 댐퍼가 결빙되어 댐퍼불량 및 냉장실 온도 불량을 일으키는 문제점이 있었다.However, in the conventional apparatus operating as described above, when the refrigerator door is opened, the damper that meets the cold air of the freezer compartment and the wet air of the refrigerator compartment when the external humid air inflow or the hot food is put into the refrigerator compartment freezes, resulting in a bad damper and poor temperature of the refrigerator compartment. There was a problem causing.

따라서, 본 발명의 목적은 댐퍼에 댐퍼결빙방지히터를 부착하여 댐퍼결빙을 사전에 방지하여 댐퍼동작 불량 및 댐퍼동작 불량으로 인하여 발생되는 냉장실 온도 불량을 방지하는 냉장고 댐퍼 결빙 방지 장치 및 방법을 제공함에 있다.Accordingly, it is an object of the present invention to provide a refrigerator damper freezing prevention device and method for preventing a damper operation and a poor temperature in the refrigerator compartment caused by the damper operation failure by attaching a damper anti-freeze heater to the damper in advance to prevent the damper freezing. have.

도1은 일반적인 냉장고의 단면도.1 is a cross-sectional view of a typical refrigerator.

도2는 종래 냉장고의 회로도.2 is a circuit diagram of a conventional refrigerator.

도3은 본 발명 냉장고의 회로도.Figure 3 is a circuit diagram of the refrigerator of the present invention.

도4는 본 발명의 동작흐름도.4 is a flow chart of the present invention.

도5a는 전자식댐퍼의 단면도.Fig. 5A is a sectional view of the electronic damper.

도5b는 전자식댐퍼의 측면도.Figure 5b is a side view of the electronic damper.

도6은 전자식댐퍼의 동작 타이밍도.6 is an operation timing diagram of an electronic damper.

*****도면의 주요부분에 대한 부호의 설명********** Description of the symbols for the main parts of the drawings *****

31:냉장실 도어 스위치 32:냉동팬31: refrigerator door switch 32: refrigeration fan

33:압축기 34:댐퍼결빙방지히터33: Compressor 34: Damper freezing heater

35:전자식댐퍼 36:리드스위치35: Electronic damper 36: Reed switch

37,38,39:릴레이부 40:인버터부37, 38, 39: Relay part 40: Inverter part

상기와 같은 목적은, 시스템을 총괄제어하는 마이크로컴퓨터와 그 마이크로컴퓨터의 제어신호에 따라 냉장실에 공급되는 냉기를 제어하는 냉장실 전자식 댐퍼를 구비한 냉장고에 있어서, 냉장실 문닫힘이 감지되면 제어신호에 따라 기 설정된 시간 동안 발열하여 댐퍼결빙을 방지하는 댐퍼결빙방지히터를 더 포함하여 구성함으로써 달성된다.The above object is a refrigerator having a microcomputer for overall control of a system and a refrigerator damper electronic damper for controlling cold air supplied to a refrigerator compartment according to a control signal of the microcomputer, wherein when the door of the refrigerator compartment is closed, the refrigerator according to the control signal is detected. It is achieved by further comprising a damper anti-freeze heater that generates heat for a predetermined time to prevent the damper freezing.

그리고, 상기 냉장고의 댐퍼결빙을 방지하는 방법은 냉장실 문닫침을 감지하는 제1 단계와; 상기 단계에서 냉장실 문닫힘이 감지되면 기 설정된 소정시간 동안 댐퍼결빙방지히터를 구동시키는 제2 단계로 이루어진 것을 특징으로 한다.The method for preventing damper freezing of the refrigerator includes: a first step of detecting a door of the refrigerating compartment; When the refrigerating compartment door closing is detected in the above step, characterized in that the second step of driving the damper frost prevention heater for a predetermined time.

이하, 본 발명에 따른 실시예를 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도3은 본 발명 실시예의 회로도로서, 이에 도시한 바와같이 냉장실 문닫힘에 따라 온/오프되는 냉장실도어스위치(31)와; 상기 냉장실도어스위치(31)의 온/오프에 의하여 문닫힘을 감지하는 포토커플러(PC1)와; 증발기에서 토출된 저온, 저압의냉매증기를 흡입하여 이를 압축함으로써 고온, 고압의 증기로 만드는 압축기(33)와; 냉장실의 냉기 공급과 차단으로 냉장실의 온도를 조절할 수 있는 냉장실 전자식 댐퍼(Damper:35)와; 냉기순환 역할을 하여 상기 증발기에서 발생된 냉기를 강제송풍하는 냉동팬(Fan)을 구동시키는 냉동팬 모터(32)와: 냉장실 온도를 감지하는 냉장실 센서(TH2)와; 냉동실의 온도를 감지하는 냉동실 센서(TH1)와; 상기 냉장실 센서(TH2) 및 냉동실 센서(TH1)에서 감지한 온도에 따라 그에 해당하는 제어신호를 출력하는 마이크로컴퓨터(41)와; 상기 마이크로컴퓨터(41)의 제어신호를 반전하는 인버터부(40)와; 상기 인버터부(40)에서 반전된 신호에 의해 구동되는 복수개의 릴레이부(37∼39)로 이루어진 냉장고에 있어서, 냉장실 문닫힘이 감지되면 댐퍼의 결빙을 방지하기 위하여 소정시간 동작하는 댐퍼결빙방지히터(35)를 포함하여 구성하며, 이와같은 본 발명의 동작을 도4에 흐름도를 참조하여 설명한다.Figure 3 is a circuit diagram of an embodiment of the present invention, as shown in the refrigerator door switch 31 that is turned on / off according to the closing door of the refrigerator compartment; Photo coupler (PC1) for detecting the door closed by the on / off of the refrigerating chamber door switch (31); A compressor (33) which makes steam of high temperature and high pressure by sucking and compressing the low temperature and low pressure refrigerant vapor discharged from the evaporator; A refrigerator compartment electronic damper (Damper 35) capable of controlling the temperature of the refrigerator compartment by supplying and blocking cold air from the refrigerator compartment; A refrigeration fan motor (32) for driving a refrigeration fan (Fan) for forced cooling of the cold air generated in the evaporator by acting as a cold air circulation; and a refrigerating chamber sensor (TH2) for detecting a fridge temperature; A freezer compartment sensor TH1 for sensing a temperature of the freezer compartment; A microcomputer 41 which outputs a control signal corresponding to the temperature detected by the refrigerating compartment sensor TH2 and the freezing compartment sensor TH1; An inverter unit 40 for inverting the control signal of the microcomputer 41; In a refrigerator comprising a plurality of relays 37 to 39 driven by a signal inverted by the inverter unit 40, a damper freezing heater that operates for a predetermined time to prevent freezing of the damper when a door of the refrigerating chamber is detected. The operation of the present invention, which includes 35, is described with reference to the flowchart in FIG.

먼저, 냉장고의 냉동실센서(TH1)의 감지온도가 높으면 압축기(33)와 연결된 제1 릴레이부(37)를 동작시켜 상기 압축기(33)를 운전시키고, 이와는 반대로 냉동실센서(TH1)의 온도가 낮으면 압축기(33)를 정지시켜 온도를 조절한다.First, when the detection temperature of the freezer compartment sensor TH1 of the refrigerator is high, the first relay unit 37 connected to the compressor 33 is operated to operate the compressor 33, and conversely, the temperature of the freezer compartment sensor TH1 is low. If so, the compressor 33 is stopped to adjust the temperature.

이때, 냉장실에 장착된 팬모터(32)는 압축기모터(33)와 연동하여 증발기에서 발생된 냉기를 강제송풍하는 냉동팬을 구동시켜 냉기순환역활을 한다.At this time, the fan motor 32 mounted in the refrigerating chamber drives a refrigerating fan forcibly blowing cold air generated in the evaporator in cooperation with the compressor motor 33 to serve as a cold air circulation.

여기서, 냉장실 온도조절은 냉장실에 설치된 댐퍼(35)를 전개 또는 전폐시켜 온도를 조절하는 데, 냉장실 센서(TH2)의 감지온도가 높으면 전자식댐퍼(35)와 연결된 제3 릴레이부(39)를 동작시켜 상기 전자식댐퍼(35)를 구동시키는 모터와 연동하는 리드스위치(36)의 상태를 감지하여 모터를 정지시킴으로써 상기 전자식댐퍼(35)는 전개상태가 된다.Here, the temperature control of the refrigerator compartment controls the temperature by developing or closing the damper 35 installed in the refrigerator compartment. When the sensing temperature of the refrigerator compartment sensor TH2 is high, the third relay unit 39 connected to the electronic damper 35 is operated. By detecting the state of the reed switch 36 that interlocks with the motor for driving the electronic damper 35 to stop the motor is the electronic damper 35 is developed.

전자식댐퍼(35)가 전개되면 냉동실의 차가운 냉기가 냉장실로 이동되어 냉장실이 차가워지고, 이에따라 냉장실 센서(TH2)의 감지온도가 낮아지므로 상기 댐퍼 (35)를 동작시키는 모터와 연동되는 리드스위치(36)의 상태에 따라 상기 모터를 정지시키면 댐퍼(36)는 전폐상태가 되며, 이와같은 동작을 반복하여 냉장실 온도를 조절한다.When the electronic damper 35 is deployed, the cold cold air of the freezer compartment is moved to the cold compartment, and thus the cold compartment becomes cold, and thus the sensing temperature of the cold compartment sensor TH2 is lowered, so that the reed switch 36 interlocked with the motor for operating the damper 35. When the motor is stopped according to the state of), the damper 36 is in a fully closed state, and this operation is repeated to adjust the refrigerating chamber temperature.

이때, 냉장고 문닫힘이 감지되면 상기 냉장고 문이 닫힌후 댐퍼결빙방지히터 (34)를 소정시간동안 구동후 정지시킴으로써 냉장고 댐퍼(35)의 결빙을 방지한다.At this time, when the refrigerator door is closed, the damper freezing prevention heater 34 is stopped after driving for a predetermined time after the refrigerator door is closed to prevent freezing of the refrigerator damper 35.

즉, 냉장실 문이 열리면 냉장실 도어스위치(31)가 온되고 이 도어스위치(31)가 온되면 저항(R2)을 통해 포토커플러(PC1)가 동작되어 마이크로컴퓨터(41)의 일측에 연결된 포트(11)는 저전위상태가 되고, 이후 냉장실도어가 닫히면 포토커플러 (PC1)가 정지되어 마이크로컴퓨터(41)의 일축에 연결된 포트(11)는 고전위가 된다.That is, when the refrigerating compartment door is opened, the refrigerating compartment door switch 31 is turned on, and when the door switch 31 is turned on, the photocoupler PC1 is operated through the resistor R2 to connect the port 11 to one side of the microcomputer 41. ) Becomes a low potential state, and when the refrigerating chamber door is closed, the photocoupler PC1 is stopped and the port 11 connected to one axis of the microcomputer 41 becomes a high potential.

이에따라, 제2 릴레이부(38)의 코일일측이 저전위가 되어 제 2릴레이부(38)가 온되어 댐퍼결빙방지히터(34)는 동작하게 된다.As a result, one side of the coil of the second relay unit 38 becomes low and the second relay unit 38 is turned on so that the damper icing prevention heater 34 operates.

이후, 마이크로컴퓨터(41)의 일측에 연결된 포트(02)가 저전위상태가 되면 제2 릴레이부(38)의 코일 일측이 고전위가 되어 제2 릴레이부(38)가 오프되므로 댐퍼결빙방지히터(52)가 정지한다.Then, when the port (02) connected to one side of the microcomputer 41 is in a low potential state, one side of the coil of the second relay unit 38 becomes a high potential so that the second relay unit 38 is turned off, thus preventing the damper icing heater. 52 is stopped.

도5a는 전자식 댐퍼의 정면도이고, 도5b는 전자식 댐퍼의 측면도이며, 도6은 전자식 댐퍼의 동작 상태도로서, 이에 도시한 바와 같이 냉장실 센서(TH2)는 '가'베플(50)의 전개/전폐를 담당하고, 또 다른 냉장실 센서(TH3)는 '나'베플(51)의 전개/전폐를 담당하여 냉장실의 중칸 및 하칸의 온도를 조절하고, 냉장실 상칸은 상기 '가', '나'베플(50),(51)이 동시에 냉기를 분배하여 온도를 조절하며, 상기 '가'베플(50)과 '나'베플(51)사이에 댐퍼결빙방지히터(52)를 부착하여 마이크로컴퓨터(41)가 냉장실도어의 문닫힘을 감지하여 댐퍼결빙방지히터(52)를 온/오프시킴으로써 댐퍼의 결빙을 방지한다.FIG. 5A is a front view of the electronic damper, FIG. 5B is a side view of the electronic damper, and FIG. 6 is an operational state diagram of the electronic damper. As shown in the drawing, the refrigerating chamber sensor TH2 is developed / closed of the 'ga' baffle 50. In addition, another refrigerator compartment sensor (TH3) is responsible for the expansion / closure of the 'b' baffle 51 to adjust the temperature of the middle compartment and the lower compartment of the refrigerating compartment, and the upper compartment of the refrigerating compartment is the 'a', 'b' baffle ( 50 and 51 simultaneously control the temperature by distributing cold air, and attaching a damper anti-icing heater 52 between the 'ga' baffle 50 and the 'b' baffle 51 to provide a microcomputer 41. Detects the door closing of the refrigerating chamber door to prevent the damper freezing by turning on / off the damper freezing prevention heater (52).

이상에서 설명한 바와같이 본 발명은 냉장실 온도를 조절하는 댐퍼의 결빙으로 인하여 발생하는 댐퍼 동작 불량 및 냉장실 온도 불량을 댐퍼결빙방지히터를 부착하여 조절함으로써 댐퍼 결빙을 사전방지하여 댐퍼 동작 불량 및 댐퍼동작 불량으로 인하여 발생되는 냉장실 온도 불량을 방지하는 데 큰 효과가 있다.As described above, the present invention prevents damper freezing by preventing damper freezing by installing a damper anti-icing heater to prevent damper operation defect and cold room temperature defect caused by freezing of the damper for controlling the temperature of the refrigerator compartment. There is a great effect to prevent the refrigerating chamber temperature caused by.

Claims (3)

시스템을 총괄제어하는 마이크로컴퓨터와 그 마이크로컴퓨터의 제어신호에 따라 냉장실에 공급되는 냉기를 제어하는 냉장실 전자식 댐퍼를 구비한 냉장고에 있어서, 냉장실 문닫힘이 감지되면 제어신호에 따라 기 설정된 시간 동안 발열하여 댐퍼결빙을 방지하는 댐퍼결빙방지히터를 더 포함하는 것을 특징으로 하는 냉장고 댐퍼 결빙 방지 장치.A refrigerator having a microcomputer for total control of a system and an electronic damper for a refrigerator compartment controlling cold air supplied to a refrigerator compartment according to a control signal of the microcomputer, wherein when a refrigerator door closing is detected, the refrigerator generates heat for a predetermined time according to a control signal. Refrigerator damper icing prevention device further comprising a damper icing prevention heater for preventing the damper icing. 제1 항에 있어서, 댐퍼결빙방지히터는 댐퍼의 '가'베플과 '나'베플사이에 부착되는 것을 특징으로 하는 냉장고 댐퍼 결빙 방지 장치.The apparatus of claim 1, wherein the damper anti-icing heater is attached between the 'gap' and 'b' baffles of the damper. 냉장실 문닫힘을 감지하는 제1 단계와; 상기 단계에서 냉장실 문닫힘이 감지되면 기 설정된 소정시간 동안 댐퍼결빙방지히터를 구동시키는 제2 단계로 이루어진 것을 특징으로 하는 냉장고 댐퍼 결빙 방지 방법.Detecting a refrigerating door closing; And a second step of driving the damper icing prevention heater for a predetermined time when the refrigerating compartment door closing is detected in the step.
KR1019970032202A 1997-07-11 1997-07-11 Apparatus and method for preventing freezing of damper of refrigerator KR100364991B1 (en)

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KR20220124925A (en) 2021-03-04 2022-09-14 엘지전자 주식회사 a refrigerator
KR20230020164A (en) 2021-08-03 2023-02-10 엘지전자 주식회사 a refrigerator and operating method thereof

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Publication number Priority date Publication date Assignee Title
EP4311991A1 (en) 2022-07-28 2024-01-31 LG Electronics Inc. Refrigerator

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