KR860001125Y1 - A door open alarm of a refrigerator - Google Patents

A door open alarm of a refrigerator Download PDF

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Publication number
KR860001125Y1
KR860001125Y1 KR2019830009929U KR830009929U KR860001125Y1 KR 860001125 Y1 KR860001125 Y1 KR 860001125Y1 KR 2019830009929 U KR2019830009929 U KR 2019830009929U KR 830009929 U KR830009929 U KR 830009929U KR 860001125 Y1 KR860001125 Y1 KR 860001125Y1
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South Korea
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refrigerator
door
integrated circuit
terminal
circuit
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KR2019830009929U
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Korean (ko)
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KR850004170U (en
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김재인
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삼성전자주식회사
정재은
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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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/008—Alarm 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
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/028—Details
    • 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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

내용 없음.No content.

Description

냉장고의 도어개방 경보장치Door open alarm of refrigerator

제1도는 본 고안의 회로도.1 is a circuit diagram of the present invention.

제2도는 리드스위치의 단면도.2 is a cross-sectional view of the reed switch.

제3도는 톤발생용 집적회로(2)의 상세한 회로도이다.3 is a detailed circuit diagram of the tone generating integrated circuit 2.

* 도면의 주요부호에 대한 부호의 설명* Explanation of symbols for major symbols in the drawings

1 : 스위칭회로부 2 : 톤발생용 집적회로1: switching circuit unit 2: integrated circuit for generating tone

3 : 입력신호인가회로 4 : 멜로디발생장치3: input signal application circuit 4: melody generating device

IN : 톤발생용집적회로(2)의 입력단자IN: Input terminal of tone generation integrated circuit (2)

OUT : 톤발생용집적회로(2)의 출력단자OUT: Output terminal of tone generating integrated circuit (2)

RST : 톤발생용 집적회로(2)의 리셋트단자RST: Reset terminal of tone generation integrated circuit (2)

SW1, SW2: 리드스위치 CP1, CP2: 비교기SW 1 , SW 2 : Reed switch CP 1 , CP 2 : Comparator

IV : 인버터IV: Inverter

본 고안은 냉장고의 냉동실과 냉장실의 도어가 개방되었을때 경보용 멜로디를 발생시키도록 된 경보장치에 관한 것이다.The present invention relates to an alarm device for generating an alarm melody when the doors of the freezer compartment and the refrigerator compartment of the refrigerator are opened.

종래의 일반적인 냉장고에는 별도로 경보장치가 설치되어 있지 않았기 때문에 취급에 부주의가 따르거나 적재물량이 과다하여 도어가 열려져도 사용자는 이를 감지할 수가 없었다. 특히 여름철과 같이 냉장고의 가동시간이 길때 냉장고의 개방상태가 장시간 지속되고 있다는 사실을 사용자가 인식하지 못하게 되는 경우에는 소비전력이 불필요하게 증대됨은 물론 적재물이 부패하게 되는 결과까지 초래된다.Since a conventional refrigerator is not separately provided with an alarm device, the user could not detect it even if the door is opened due to careless handling or excessive load. In particular, when the user does not recognize that the open state of the refrigerator continues for a long time when the operating time of the refrigerator is long, such as in summer, power consumption is unnecessarily increased as well as the load becomes corrupted.

본 고안은 상기와 같은 결점을 개선하기 위해 고안된 것으로서, 자기력에 대하여 민감하게 작용하는 리드스위치(REED SWTTCH)와 이 리드스위치의 개폐여부에 따라 경보용 멜로디를 발생시키는 전자회로를 냉장실과 냉동실의 도어에다 연정설치해 놓음으로서 사용자로 하여금 도어의 개폐상태를 쉽게 감지할 수 있도록 한 것이다.The present invention is designed to improve the above-mentioned shortcomings, and the reed switch (REED SWTTCH) sensitive to the magnetic force and the electronic circuit for generating an alarm melody depending on whether the reed switch is opened or closed, the door of the refrigerator compartment and the freezer In addition, by installing the coalescing so that the user can easily detect the opening and closing state of the door.

이하 본 고안의 구성 및 작용효과를 예시도면에 의거 상세히 설명하면 다음과 같다.Hereinafter, the configuration and operation of the present invention will be described in detail based on the drawings.

본 고안은 냉동실과 냉장실의 도어에 부착되는 공지의 리드스위치(SW1)(SW2)와 멜로디 발생장치(4)를 구비한 냉장고의 도어개방 경보장치에 있어서, 상기 리드스위치 (SW1)(SW2)를 입력단으로 하고 트랜지스터(TR3)와 직결된 트랜지스터 (TR1) (TR2)를 스위칭소자로 사용하는 스위칭회로부(1)의 출력단에는 톤발생용 집적회로 (2)의 리셋트단자(RST)를 연결하고, 상기 톤발생용 집적회로(2)의 입력단자(IN)에는 다이오드(D1)와 콘덴서(C1)를 구비하고 있는 입력신호 인가회로(3)를 연결함과 더불어 출력단자 (OUT)에는 통상의 멜로디 발생장치(4)를 결합시킨 구조로 되어있다.The present invention is a door open alarm device of a refrigerator provided with a known reed switch (SW 1 ) (SW 2 ) and a melody generator (4) attached to the door of the freezer compartment and the refrigerating compartment, the reed switch (SW 1 ) ( the SW 2) to the input terminal and the transistor (TR 3) and the direct connection of the transistor (TR 1) (the reset terminal of the switching circuit (1) integrated circuit (2), the tone generating an output terminal of that use TR 2) to the switching elements And an input signal applying circuit (3) having a diode (D 1 ) and a capacitor (C 1 ) to the input terminal (IN) of the tone generating integrated circuit (2). The output terminal OUT has a structure in which a normal melody generating device 4 is combined.

제1도는 상기한 구조로 되어있는 본 고안의 회로도를 도시해 놓은 것인데, 여기서 냉동실과 냉장실의 도어내측에 부착되는 리드스위치(SW1)(SW2)는 자력에 대하여 민감하게 동작하도록 된 것으로서, 이러한 리드스위치(SW1)(SW2)는 제2도에서와 같이 유리관 내부에 질소가스를 봉입시키는 한편 자성체 리드로서는 니켈-철합금을 사용하되 그 접점부는 금으로 도금시켜 놓고있는데, 이러한 리드스위치는 외부에서 영구자석을 접근시키면 2개의 자성체에 자력선이 통하는 위치에서 접점이 “온”되고, 자석이 멀어지면 “오프”되는 특성이 있기때문에 근접스위치용으로 많이 사용되고 있는 것이다.1 is a circuit diagram of the present invention having the above-described structure, wherein the reed switch (SW 1 ) (SW 2 ) attached to the inside of the door of the freezer compartment and the refrigerating compartment is to be sensitive to magnetic force, This lead switch (SW 1 ) (SW 2 ), as shown in Figure 2, while encapsulating nitrogen gas inside the glass tube while using a nickel-iron alloy as a magnetic lead, the contact portion is plated with gold. When the permanent magnet is approached from the outside, the contact is “on” at the position where the magnetic force line passes through the two magnetic bodies and “off” when the magnet is far away, so it is widely used for proximity switches.

본 고안에서는 상기한 리드스위치(SW1)(SW2)를 냉동실과 냉장실측에다 장치하는 한편, 영구자석을 도어측에 설치하여 도어의 개폐를 감지할 수 있도록 하였다.In the present invention, the reed switch SW 1 (SW 2 ) is installed on the freezer compartment and the refrigerating compartment side, and a permanent magnet is installed on the door side to detect the opening and closing of the door.

또, 제3도에는 도어의 개폐에 따라 평탄한 톤(flat tone)을 발생하는 톤발생용 집적회로(2)의 상세도가 도시되어져 있는바, 이는 입력단자(IN)가 로우상태이고 리셋트단자(RST)가 하이상태일때 출력단자(OUT)에서 톤을 출력하도록 되어있다.3 shows a detailed view of the tone generating integrated circuit 2 generating flat tones as the door is opened and closed, in which the input terminal IN is in a low state and the reset terminal. When (RST) is high, it outputs the tone from the output terminal.

이와같은 부품의 특성을 이용함에 있어서 냉동실과 냉장실의 도어가 닫힌 상태에서는 리드스위치(SW1)(SW2)가 “온”상태를 유지하게 되므로 트랜지스터(TR1) (TR2)는 “턴온”되어 저항(R6)의 일단에 가해지는 동작전원(Vcc)은 접지되게 되고, 그에따라 톤발생용 집적회로(2)의 리셋트단자(RST)는 로우레벨로 유지되며, 한편, 트랜지스터(T3)는 바이어스가 걸리지 않기 때문에 “턴오프”상태가 되고 입력단자(IN)는 저항(R1)(R2)과 다이오드(D1)를 거쳐서 콘덴서(C1)에 충전되는 동작전원(Vcc)으로 인해서 하이레벨이 된다.In using the characteristics of such components, the transistors TR 1 (TR 2 ) are “turned on” because the reed switch SW 1 (SW 2 ) remains “on” when the doors of the freezer compartment and the refrigerator compartment are closed. Thus, the operating power supply Vcc applied to one end of the resistor R 6 is grounded, so that the reset terminal RST of the tone generating integrated circuit 2 is kept at a low level, while the transistor T 3 ) Because it is not biased, it is “turned off” and the input terminal IN is charged to the capacitor C 1 through the resistor R 1 (R 2 ) and the diode D 1 (Vcc) ) Is a high level.

즉 단자(RST)가 로우레벨로 되어 톤발생용 집적회로(2)내부의 RS플립플롭(5)이 리셋트되므로 입력단자(IN)의 신호레벨에 관계없이 톤발생용 집적회로(2) 출력단자 (OUT)에서는 아무런 신호도 발생되지 않게 된다.That is, since the terminal RST is at the low level and the RS flip-flop 5 inside the tone generating integrated circuit 2 is reset, the tone generating integrated circuit 2 is output regardless of the signal level of the input terminal IN. No signal is generated at terminal (OUT).

한편 냉동실의 도어가 열려져서 리드스위치(SW1)가 “오프”되거나 냉장실의 도어가 열려서 리드스위치(SW2)가 “오프”되면 트랜지스터(TR1)(TR2)는 “턴”오프 되므로 저항(R6)을 통하는 동작전원(Vcc)은 하이레벨상태로 톤발생용 집적회로(2)의 리셋트단자(RST)에 인가된다. 또한 동작전원(Vcc)은 저항(R7)을 통해서 트랜지스터 (TR3)의 베이스에 인가되고, 트랜지스터(TR3)의 콜렉터측에도 저항(R1)을 거쳐서 동작전원(Vcc)이 인가되기 때문에 트랜지스터(TR3)는 “턴온”되어 저항(R1)측의 동작전원(Vcc)이 접지된다. 이로 인하여 콘덴서(C1)에 충전되었던 전하는 저항(R3)을 통해서 접지측으로 방전된다.On the other hand, if the reed switch SW1 is “off” because the door of the freezer compartment is opened or the reed switch SW 2 is “off” because the door of the refrigerating compartment is opened, the transistor TR 1 (TR 2 ) is “turned off” and thus the resistance ( The operating power supply Vcc through R 6 is applied to the reset terminal RST of the tone generating integrated circuit 2 in a high level state. In addition, since the operating power supply Vcc is applied to the base of the transistor TR 3 through the resistor R 7 , and the operating power supply Vcc is applied to the collector side of the transistor TR 3 via the resistor R 1 , the transistor is applied. (TR 3 ) is "turned on" and the operating power supply (Vcc) of the resistor (R 1 ) side is grounded. As a result, the charge charged in the capacitor C 1 is discharged to the ground side through the resistor R 3 .

그리고 이렇게 방전되는 시간, 즉 일정한 지연시간 동안은 입력단자(IN)가 하이레벨상태를 유지하고 있게되므로 톤발생용 집적회로(2)에 있는 비교기(CP1)의 출력으로 RS플립플롭(5)의 단자(R)가 로우레벨상대로 유지되는 한편, 단자(S)도 로우레벨 상태를 유지하게 되고, 그에따라 RS플립플롭(5)의 특성상 톤발생용 집적회로(2)의 출력단자(OUT)에는 아무런 신호도 발생되지 않게 된다. 콘덴서(C1)에 충전된 전하가 저항 (R3)을 통하여 방전된 후에 입력단자(IN)는 로우레벨 상태로 되어 비교기(CP1) (CP2)를 거친 플립플롭(5)의 단자(R)(S)입력은 각각 로우레벨 상태와 하이레벨 상태가 되므로 톤발생용 집적회로(2)의 출력단자(OUT)에서 평탄한 톤(flat tone)이 멜로디발생장치 (4)에 가해지게 되는데, 이때 멜로디 발생장치(4)에서는 상기 톤신호를 받아서 멜로디를 발생시켜서 스피이커(SP)로 가청신호를 재생시키게 된다.Since the input terminal IN is maintained at a high level during the discharge time, that is, the predetermined delay time, the RS flip-flop 5 is output to the output of the comparator CP 1 in the tone generating integrated circuit 2. While the terminal R is held at the low level, the terminal S is also maintained at the low level, and accordingly, the output terminal OUT of the tone generating integrated circuit 2 is due to the characteristics of the RS flip-flop 5. No signal will be generated. After the charge charged in the capacitor C 1 is discharged through the resistor R 3 , the input terminal IN goes to a low level, and the terminal of the flip-flop 5 passing through the comparator CP 1 (CP 2 ) ( Since the R) (S) inputs become a low level state and a high level state, a flat tone is applied to the melody generating device 4 at the output terminal OUT of the tone generating integrated circuit 2. At this time, the melody generating device 4 receives the tone signal and generates a melody to reproduce the audible signal with the speaker SP.

따라서 사용자는 냉장고의 도어가 열려있음을 감지하게 되는 것이다.Therefore, the user will sense that the door of the refrigerator is open.

상기와 같이 동작하게 되는 본 고안은 사용자로 하여금 비교적 간단한 회로구성으로 도어의 개폐여부를 확실하게 인식할 수 있게 해주며 도어개방으로부터 야기되는 불필요한 전력소모나 냉기의 손실을 방지할수 있는 장점을 가지고 있다.The present invention, which operates as described above, enables the user to be sure of whether the door is opened or closed with a relatively simple circuit configuration, and has an advantage of preventing unnecessary power consumption or cold air loss caused by the door opening.

Claims (1)

냉동실과 냉장실의 도어에 부착되는 공지의 리드스위치(SW1)(SW2)와 멜로디발생장치(4)를 구비한 냉장고의 도어개방 경보장치에 있어서, 상기 리드스위치(SW1) (SW2)를 입력단으로 하고, 트랜지스터(TR3)와 직결된 트랜지스터(TR1)(TR2)를 스위칭소자로 사용하는 스위칭회로부(1)의 출력단에 톤발생용 집접회로(2)의 리셋트단자 (RST)를 연결하고, 상기 톤발생용 집적회로(2)의 입력단자(IN)에는 다이오드(D1)와 콘덴서(C1)를 구비하고 있는 입력신호 인가회로(3)를 연결하는 한편 톤발생용 집적회로 (2)의 출력단자(OUT)에는 통상의 멜로디 발생장치(4)를 결합시킨 구조로 되어 냉장고의 도어개방시 멜로디를 발생하도록 된 것을 특징으로 하는 냉장고의 도어개방 경보장치.In the refrigerator opening alarm device provided with a known reed switch (SW 1 ) (SW 2 ) and a melody generating device (4) attached to the door of the freezer compartment and the refrigerating compartment, the reed switch (SW 1 ) (SW 2 ) Is the input terminal, and the reset terminal RST of the tone generating circuit 2 is output at the output terminal of the switching circuit section 1 using transistors TR 1 and TR 2 connected directly to the transistor TR 3 as switching elements. ), And an input signal applying circuit (3) having a diode (D 1 ) and a capacitor (C 1 ) is connected to an input terminal (IN) of the tone generating integrated circuit (2), while The output terminal (OUT) of the integrated circuit (2) has a structure in which a conventional melody generating device (4) is coupled to generate a melody when opening the door of the refrigerator, characterized in that the door opening alarm device of the refrigerator.
KR2019830009929U 1983-11-24 1983-11-24 A door open alarm of a refrigerator KR860001125Y1 (en)

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KR2019830009929U KR860001125Y1 (en) 1983-11-24 1983-11-24 A door open alarm of a refrigerator

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Application Number Priority Date Filing Date Title
KR2019830009929U KR860001125Y1 (en) 1983-11-24 1983-11-24 A door open alarm of a refrigerator

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KR850004170U KR850004170U (en) 1985-07-13
KR860001125Y1 true KR860001125Y1 (en) 1986-06-05

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