JPS604053Y2 - Temperature detection device for refrigerators, etc. - Google Patents
Temperature detection device for refrigerators, etc.Info
- Publication number
- JPS604053Y2 JPS604053Y2 JP18352379U JP18352379U JPS604053Y2 JP S604053 Y2 JPS604053 Y2 JP S604053Y2 JP 18352379 U JP18352379 U JP 18352379U JP 18352379 U JP18352379 U JP 18352379U JP S604053 Y2 JPS604053 Y2 JP S604053Y2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- temperature
- main control
- refrigerator
- 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.)
- Expired
Links
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Alarm Systems (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【考案の詳細な説明】
本考案は冷蔵庫等の庫内温度検出回路に関するものであ
る。[Detailed Description of the Invention] The present invention relates to an internal temperature detection circuit for a refrigerator or the like.
従来、コンプレッサの０Ｎ−ＯＦＦ制御用と庫内温度の
昇温表示用にサーミスタ等の温度検出素子を各々有し、
制御していた為、使用部品数の増大、高価格等の欠点を
有していた。Conventionally, temperature detection elements such as thermistors were used for ON-OFF control of the compressor and for displaying temperature rise inside the refrigerator.
Since it was controlled, it had drawbacks such as an increase in the number of parts used and high cost.
本考案は上記した従来の欠点を解消するものでコンプレ
ッサのＯＮ −ＯＦ Ｆ制御用の比較回路と庫内の昇温
表示用の比較回路を各々設け、１個の温度検出素子で庫
内温度を検出し、別途設けたタイミング回路の出力信号
により温度検出素子の抵抗比を変化させ、上記比較回路
の入力信号とし、比較回路の出力を主制御回路に送信し
、コンプレッサの０Ｎ−ＯＦＦ制御および庫内の昇温表
示を行うよう制御するもので、これにより、１個の温度
検出素子で庫内温度を検出する為、使用部品数を少なく
して、安価な温度検出回路を提供するものである。The present invention solves the above-mentioned conventional drawbacks by providing a comparison circuit for ON-OFF control of the compressor and a comparison circuit for displaying temperature rise inside the refrigerator, and detects the temperature inside the refrigerator using a single temperature detection element. The resistance ratio of the temperature detection element is changed by the output signal of a separately provided timing circuit, which is used as an input signal to the above comparison circuit, and the output of the comparison circuit is sent to the main control circuit to perform ON-OFF control of the compressor and storage. This controls the internal temperature rise display, and because it detects the internal temperature with a single temperature detection element, it reduces the number of parts used and provides an inexpensive temperature detection circuit. .
以下本考案の詳細を図示の一実施例を参照して説明する
。The details of the present invention will be explained below with reference to an illustrated embodiment.
１はサーミスタで、冷蔵庫の庫内温度を検出する。1 is a thermistor that detects the temperature inside the refrigerator.
２は比較回路で、基準電圧を供給する抵抗３とで構成し
ている。Reference numeral 2 denotes a comparator circuit, which is composed of a resistor 3 that supplies a reference voltage.
比較回路２は庫内温度が通常使用状態より高くなった異
常温度検出用で出力はＡＮＤ回路６に接続している。The comparison circuit 2 is used to detect an abnormal temperature when the temperature inside the refrigerator is higher than the normal operating condition, and its output is connected to the AND circuit 6.
比較回路２はＢ点電圧よりＡ点電圧が高い場合に出力は
“１゛、低い場合は０゛になるよう構成されている。The comparator circuit 2 is configured so that the output is "1" when the voltage at point A is higher than the voltage at point B, and 0 when it is lower.
４は比較回路で、コンプレッサのＯＮ −ＯＦ Ｆ動作
温度検出用で基準電圧を供給する抵抗５とで構成してい
る。Reference numeral 4 denotes a comparator circuit, which is composed of a resistor 5 for supplying a reference voltage for detecting the ON-OFF operating temperature of the compressor.
比較回路４は０点電圧よりＡ点電圧が高い場合に出力は
“１”、低い場合に“０”になるよう回路構成されてい
る。The comparator circuit 4 is configured so that the output is "1" when the A point voltage is higher than the 0 point voltage, and "0" when it is lower.
比較回路４の出力はＡＮＤ回路７の１人力と接続し、Ａ
ＮＤ回路６，７の各々の出力は主制御回路８へ入力され
ている。The output of the comparison circuit 4 is connected to one of the AND circuits 7, and A
The outputs of each of the ND circuits 6 and 7 are input to a main control circuit 8.
９はタイミング回路、１０は発振回路である。9 is a timing circuit, and 10 is an oscillation circuit.
発振回路１０から連続して送出されるクロック信号をタ
イミング回路９は受信し、タイミング回路９は出力り、
Ｅに規則的に“１９９，６“０゛の信号を出し、同時に
出力り、 Ｅが“１゛にならないよう構成されている。The timing circuit 9 receives the clock signal continuously sent out from the oscillation circuit 10, and the timing circuit 9 outputs the clock signal.
A signal of "199,6"0 is regularly output to E, and the signal is output at the same time, so that E does not become "1".
１１は後述する表示ランプ２７等の警告装置用抵抗（以
下抵抗１１と略称する）、１２はダイオード、１３はト
ランジスタ、１４は抵抗で、タイミング回路９の出力り
が“１”になったとき、トランジスタ１３はベース抵抗
１４を介して動作状態となり、コレクタ側に接続したグ
イオ−ド１２を通じて、サーミスタ１から抵抗１１の方
向に電流が流れＡ点電圧はサーミスタ１と抵抗１１より
形成して、比較回路２の入力信号となる。11 is a resistor for a warning device such as an indicator lamp 27 (hereinafter referred to as resistor 11), which will be described later; 12 is a diode; 13 is a transistor; and 14 is a resistor. When the output of the timing circuit 9 becomes "1", The transistor 13 is activated via the base resistor 14, and current flows from the thermistor 1 to the resistor 11 through the guide 12 connected to the collector side, and the voltage at point A is formed by the thermistor 1 and resistor 11 for comparison. This becomes the input signal for circuit 2.
１５は温度調節用ボリウム、１６はダイオード、１７は
トランジスタ、１８は抵抗である。15 is a temperature control volume, 16 is a diode, 17 is a transistor, and 18 is a resistor.
タイミング回路９の出力Ｅが“１゛となった時ベース抵
抗１８を介してトランジスタ１７は動作状態となり、比
較回路４の入力信号はサーミスタ１とボリウム１５より
形成したＡ点電圧を送る。When the output E of the timing circuit 9 becomes "1", the transistor 17 becomes active via the base resistor 18, and the input signal of the comparator circuit 4 sends the voltage at point A formed by the thermistor 1 and the potentiometer 15.
またタイミング回路９の出力りはＡＮＤ回路６の１人力
及び主制御回路８の１１人力へ接続し、出力ＥはＡＮＤ
回路７の１人力、および主制御回路の１２人力と接続し
ている。In addition, the output of the timing circuit 9 is connected to the 1st power of the AND circuit 6 and the 11th power of the main control circuit 8, and the output E is connected to the AND circuit 6 and the 11th power of the main control circuit 8.
It is connected to the 1-man power of circuit 7 and the 12-man power of the main control circuit.
ＡＮＤ回路６はタイミング回路９の出力りが“１゛で比
較回路２の出力が１゛のときに主制御回路８のＳ１人力
に“１゛の信号を送り、同様にＡＮＤ回路７もタイミン
グ回路９の出力Ｅと比較回路４の２人力共“１゛のとき
のみ出力“１゛′の信号を主制御回路８のＳ２人力に送
る。The AND circuit 6 sends a signal of "1" to the S1 input of the main control circuit 8 when the output of the timing circuit 9 is "1" and the output of the comparator circuit 2 is "1". Only when the output E of the comparator circuit 9 and the two power inputs of the comparator circuit 4 are "1", a signal of output "1" is sent to the power input S2 of the main control circuit 8.
主制御回路８のＱ１出力は抵抗１９と接続し、トランジ
スタ２０へ動作信号を送る。The Q1 output of the main control circuit 8 is connected to a resistor 19 and sends an operation signal to a transistor 20.
トランジスタ２０のコレクタ側にリレー２１を接続し、
このリレー２１の常開補助接点２１ａはコンプレッサ２
２に動作電圧を供給する交流電源２３と直列に接続され
ている。Connect the relay 21 to the collector side of the transistor 20,
The normally open auxiliary contact 21a of this relay 21 is connected to the compressor 2
It is connected in series with an AC power supply 23 that supplies an operating voltage to 2.
また主制御回路８のＱ２出力は抵抗２４と接続し、トラ
ンジスタ２５へ動作信号を送る。Further, the Q2 output of the main control circuit 8 is connected to the resistor 24 and sends an operation signal to the transistor 25.
トランジスタ２５のエミッタ側に抵抗２６を接続し、抵
抗２６と表示ランプ２７が接続し、トランジスタ２５が
動作すると表示ランプ２７が点燈する。A resistor 26 is connected to the emitter side of the transistor 25, and a display lamp 27 is connected to the resistor 26. When the transistor 25 operates, the display lamp 27 lights up.
次に上記のように構成した回路の動作について説明する
。Next, the operation of the circuit configured as described above will be explained.
サーミスタ１は冷蔵庫庫内に取付けたものとする。It is assumed that the thermistor 1 is installed inside the refrigerator.
電源が投入されると発振回路１０は発振動作を開始して
、クロック信号をタイミング回路９に送出する。When the power is turned on, the oscillation circuit 10 starts an oscillation operation and sends a clock signal to the timing circuit 9.
タイミング回路９はこのクロック信号をカウントする。Timing circuit 9 counts this clock signal.
タイミング回路９の出力り、Ｅが“０゛の状態にある時
はトランジスタ１３．１７共にＯＦＦ状態にあり、Ａ点
電圧はサーミスタ１の抵抗変化に影響されず一定電圧を
保つ。When the output E of the timing circuit 9 is in the state of "0", both the transistors 13 and 17 are in the OFF state, and the voltage at the A point is not affected by the resistance change of the thermistor 1 and remains constant.
この時比較回路２，４の出力は“１パの状態にあるが、
ＡＮＤ回路６，７の他入力はタイミング回路９の出力り
、Ｅが“０“の状態にあり、ＡＮＤ回路６，７の出力は
°゛０゛で主制御回路８の２人力Ｓ□、Ｓ２共４４０９
９であり、Ｑｌ、Ｑ２出力共に“Ｏ”に保持されている
。At this time, the outputs of the comparator circuits 2 and 4 are in the “1-pa” state, but
The other inputs of the AND circuits 6 and 7 are the output of the timing circuit 9, and E is in the state of "0", and the outputs of the AND circuits 6 and 7 are °゛0゛, and the two manual inputs of the main control circuit 8 S□, S2 Common 4409
9, and both Ql and Q2 outputs are held at "O".
従って、コンプレッサ２２、表示ランプ２７は動作しな
い。Therefore, the compressor 22 and indicator lamp 27 do not operate.
発振回路１０のクロック信号によりタイミング回路９の
カウントが進み、出力りが“０゛から“１′に変化する
。The clock signal of the oscillation circuit 10 advances the count of the timing circuit 9, and the output changes from "0" to "1".
出力りが“１゛になるとベース抵抗１４を介してトラン
ジスタ１３は動作状態になり、Ａ点電圧はサーミスタ１
と抵抗１１より形成され、庫内温度の昇温表示用信号と
して比較回路２の入力となり、Ｂ点電圧よりＡ点電圧が
高い、すなわち庫内温度が高い状態にあり、比較回路２
の出力は“１゛になる。When the output voltage reaches "1", the transistor 13 becomes active via the base resistor 14, and the voltage at point A is applied to the thermistor 1.
and a resistor 11, which serves as an input to the comparator circuit 2 as a signal for indicating the temperature increase in the refrigerator.
The output of becomes “1”.
ＡＮＤ回路６は比較回路２の出力“１゛により１人力が
“１゛となる。In the AND circuit 6, the output of the comparator circuit 2 becomes "1", so that one person's power becomes "1".
また、タイミング回路９の出力りが“１″であるからＡ
ＮＤ回路６の他入力も“１″となりＡＮＤ動作により出
力は０゛′から“１゛に変わり主制御回路８のＳ１人力
は“１゛となる。Also, since the output of the timing circuit 9 is "1", A
The other inputs of the ND circuit 6 also become "1", and the output changes from 0' to "1" due to the AND operation, and the S1 manual power of the main control circuit 8 becomes "1".
Ｓ□大入力°１゛となると主制御回路８はタイミング回
路９の出力りと接続したＪ□大入力“１“とからＱ２出
力に“１゛を送出する様制御する。When the S□ large input is 1°, the main control circuit 8 controls to send “1” from the J□ large input “1” connected to the output of the timing circuit 9 to the Q2 output.
Ｑ２出力が“０″から°゛１゛に変化するとベース抵抗
２４を介してトランジスタ２５は動作し昇温表示ランプ
２７は点燈し、庫内温度が高い状態にあることを表示す
る。When the Q2 output changes from "0" to "1", the transistor 25 operates via the base resistor 24, and the temperature increase indicator lamp 27 lights up, indicating that the temperature inside the refrigerator is high.
またこの時、ＡＮＤ回路７の１人力であるタイミング回
路９の出力Ｅは“０゛状態にあり、主制御回路８のＳ２
人力は０゛′の状態である。Also, at this time, the output E of the timing circuit 9, which is one of the AND circuits 7, is in the "0" state, and the S2 of the main control circuit 8 is in the "0" state.
Human power is at 0'.
更に発振回路１０の出力するクロック信号によりタイミ
ング回路９はカウントを続は出力りが１゛から“０パに
なる。Furthermore, the timing circuit 9 continues counting by the clock signal output from the oscillation circuit 10, and the output goes from 1 to 0.
出力りが゛０パになると前述のようにＡＮＤ回路６の１
人力が°“０゛となり出力は゛１パから“Ｏ゛に変わり
主制御回路８のＳ、入力も“０“になる。When the output voltage becomes 0%, as mentioned above, 1 of the AND circuit 6
When the human power becomes 0, the output changes from 1 to 0, and the S input to the main control circuit 8 also becomes 0.
しかし、Ｑ２出力は“１゛の状態を保持したままで、昇
温表示を続ける。However, the Q2 output remains at "1" and continues to display the temperature increase.
またトランジスタ１３はオフになる。Also, transistor 13 is turned off.
タイミング回路９のカウントが進んで出力Ｅが°“０゛
から“１゛に変わるとベース抵抗１Ｂを介してトランジ
スタ１７は動作状態になりＡ点電圧はサーミスタ１と温
度調節用ボリウムとで形成し、比較回路４の入力電圧と
なる。When the count of the timing circuit 9 progresses and the output E changes from 0 to 1, the transistor 17 becomes active via the base resistor 1B, and the voltage at point A is formed by the thermistor 1 and the temperature adjustment volume. , becomes the input voltage of the comparator circuit 4.
庫内温度が高いのでＡ点電圧はＣ点電圧より高く、比較
回路４の出力は“０゛から１゛に変わる。Since the temperature inside the refrigerator is high, the voltage at point A is higher than the voltage at point C, and the output of comparator circuit 4 changes from "0" to "1".
ＡＮＤ回路７は比較回路４の出力と、タイミング回路９
の出力Ｅの“°１“′の信号を受けて、ＡＮＤ動作によ
り出力が“０゛から“１゛になり主制御回路８の５２人
力は“０゛から“１゛に変わる。The AND circuit 7 connects the output of the comparator circuit 4 and the timing circuit 9.
In response to the "°1" signal from the output E of the main control circuit 8, the output changes from "0" to "1" through an AND operation, and the 52 manual power of the main control circuit 8 changes from "0" to "1".
この時、主制御回路８の１２人力はタイミング回路９の
出力Ｅにより“１゛となりＳ２人力と１２人力が共に１
′′となり、主制御回路８は動作してＱ１出力は゛０パ
から“１゛に変わる。At this time, the 12-man power of the main control circuit 8 becomes "1" due to the output E of the timing circuit 9, and both the S2 man-power and the 12-man power become 1.
'', the main control circuit 8 operates and the Q1 output changes from 0 to 1.
Ｑ工出力が“ｌ“となると、ベース抵抗１９を介してト
ランジスタ２０はオン状態になり、リレー２１を励磁す
る。When the Q output becomes "l", the transistor 20 is turned on via the base resistor 19, and the relay 21 is energized.
このリレー２１が励磁されると、その常開補助接点２１
ａが閉Ｊｉ腰コンプレッサ２２に交流電源２３を接続し
てコンプレッサ２２が始動し、庫内の冷却を開始する。When this relay 21 is energized, its normally open auxiliary contact 21
When a is closed, the AC power supply 23 is connected to the compressor 22, the compressor 22 is started, and cooling of the inside of the refrigerator is started.
タイミング回路９の出力Ｅが“１パから“０゛になると
、トランジスタ１７はオフ状態となり、ＡＮＤ回路７の
出力も１゛から“０゛に変わり、主制御回路８のＳ２人
力、Ｊ２人力共に１゛から０゛になるが、依然としてＱ
１出力は１゛の状態を維持しコンプレッサ２２により庫
内温度が低下する。When the output E of the timing circuit 9 changes from "1" to "0", the transistor 17 turns off, and the output of the AND circuit 7 also changes from "1" to "0", and both the S2 manual power and J2 manual power of the main control circuit 8 It goes from 1゛ to 0゛, but still Q
1 output maintains the state of 1', and the temperature inside the refrigerator is lowered by the compressor 22.
タイミング回路９の出力りが再び“１パになると前述と
同様の動作で庫内温度が高い状態にあれば、主制御回路
８のＳ１人力、Ｊ１人力共に°“１′となりＱ２出力は
“１“の状態を維持して表示ランプ２７は昇温表示を続
ける。When the output of the timing circuit 9 becomes "1" again, the same operation as described above occurs, and if the temperature inside the refrigerator is high, both the S1 manual power and the J1 manual power of the main control circuit 8 become "1", and the Q2 output becomes "1". The display lamp 27 continues to display the temperature increase while maintaining the state of ".
同様にタイミング回路９の出力りが“°１゛から“０゛
になり、出力Ｅが“０”から“１゛となると比較回路４
はサーミスタ１とボリウム１５により形成したＡ点電圧
を受けて出力が“１゛となり主制御回路８のＳ２人力と
１２人力が１“となり、Ｑ１出力は“１゛の状態を維持
し、コンプレッサ２２は動作を続は庫内が低下する。Similarly, when the output of the timing circuit 9 changes from "°1" to "0" and the output E changes from "0" to "1", the comparator circuit 9
receives the A point voltage formed by the thermistor 1 and the regulator 15, and the output becomes "1", and the S2 manual power and 12 manual power of the main control circuit 8 become "1", the Q1 output maintains the state of "1", and the compressor 22 If the operation continues, the temperature inside the refrigerator will drop.
庫内温度が下った時タイミング回路９の出力りが“０゛
から“１゛°になると、前述のようにサーミスタ１と昇
温設定用抵抗１１とで形成したＡ点電圧が、Ｂ点電圧よ
り低くなり、比較回路２の出力は“Ｏ゛′になる。When the temperature inside the refrigerator falls and the output of the timing circuit 9 goes from 0° to 1°, the voltage at point A formed by the thermistor 1 and the temperature increase setting resistor 11 as described above becomes the voltage at point B. becomes lower, and the output of the comparator circuit 2 becomes "O''.
従ってＡＮＤ回路６の１人力が“０゛°、個入力が“１
゛である為出力は０゛になり、主制御回路８のＳ１人力
は“０°゛、１１人力は゛１パとなり、主制御回路８は
動作して、Ｑ２出力は“１゛から０゛に変わり、トラン
ジスタ２５はオフ状態となり昇温表示ランプ２７は消燈
し、庫内が冷えた状態であることを知らせる。Therefore, one person's power of AND circuit 6 is "0゛°, and each input is "1".
Therefore, the output becomes 0, the S1 manual power of the main control circuit 8 becomes "0", the 11 human power becomes "1", the main control circuit 8 operates, and the Q2 output changes from "1" to 0. Then, the transistor 25 is turned off and the temperature increase indicator lamp 27 is turned off, indicating that the inside of the refrigerator is cold.
タイミング回路９の出力りが１゛から“０”になり、出
力Ｅが“０”から“１”となるとＡ点’［圧はサーミス
タ１とボリウム１５とで形成される。When the output of the timing circuit 9 goes from 1 to "0" and the output E goes from "0" to "1", the pressure at point A' is formed by the thermistor 1 and the potentiometer 15.
庫内温度が設定温度より低くなるとＡ点電圧が０点電圧
より低くなり比較回路４は出力が“０゛′となり、ＡＮ
Ｄ回路７の出力は“０゛となり主制御回路８のＳ２人力
が０゛、１２人力が°゛１°゛の状態になり、主制御回
路８が動作してＱ１出力は１゛から“°Ｏ゛に変わり、
トランジスタ２０はオフ状態になり、リレー２１は動作
を停止する。When the temperature inside the refrigerator becomes lower than the set temperature, the voltage at point A becomes lower than the voltage at point 0, and the output of comparator circuit 4 becomes "0", and AN
The output of the D circuit 7 becomes "0", the S2 manual power of the main control circuit 8 becomes 0", the 12 human power becomes "1°", and the main control circuit 8 operates and the Q1 output changes from 1" to "°". Changed to O゛,
Transistor 20 is turned off and relay 21 stops operating.
リレー２１の動作停止により常開補助接点２１ａは開Ｊ
ｔし、コンプレッサ２２は交流電源２３との接続が切れ
、動作を停止する。The normally open auxiliary contact 21a is opened due to the relay 21 stopping operation.
t, the compressor 22 is disconnected from the AC power source 23 and stops operating.
冷却運転の停止により庫内温度は徐々に高くなり、タイ
ミング回路９の出力Ｅが１゛となった時のタイミングで
比較回路４の状態を主制御回路８のＳ２人力、１２人力
が受けて、コンプレッサ２２のオン、オフ動作制御を繰
り返す。As the cooling operation is stopped, the temperature inside the refrigerator gradually increases, and at the timing when the output E of the timing circuit 9 reaches 1, the state of the comparison circuit 4 is received by the main control circuit 8, S2 manual power and S12 manual power. The on/off operation control of the compressor 22 is repeated.
また、コンプレッサ２２のオン、オフ動作で庫内が設定
温度にある時、冷蔵庫の扉（図示せず）を長時間開放し
たり、温かい食品を多数人れると庫内温度は昇温表示の
設定温度以上まで上昇し、この時、前述のようにタイミ
ング回路９の出力りにより、サーミスタ１と抵抗１１と
で形成されたＡ点電圧とＢ点電圧を比較回路２は比較動
作して、主制御回路８のＳ１人力、１１人力に“１９９
の信号を送り、昇温表示ランプ２７を点燈し、昇温した
ことを知らせ、再び正常な温度まで庫内が低下すると前
述のように昇温表示ランプ２７は消燈する。In addition, when the temperature inside the refrigerator is at the set temperature due to the on/off operation of the compressor 22, if the refrigerator door (not shown) is left open for a long time or a large number of hot foods are placed in the refrigerator, the temperature inside the refrigerator will increase. The temperature rises above the temperature, and at this time, as described above, the output of the timing circuit 9 causes the comparison circuit 2 to compare the voltage at point A and the voltage at point B formed by the thermistor 1 and resistor 11, and the main control Circuit 8 S1 manpower, 11 manpower “199
A signal is sent, the temperature increase indicator lamp 27 is turned on to notify that the temperature has risen, and when the temperature inside the refrigerator falls to the normal temperature again, the temperature increase indicator lamp 27 is turned off as described above.
このように発振回路１０はクロック信号をタイミング回
路９に送りタイミング回路９はクロックをカウントして
出力りおよびＥは“０゛から“６１９９．“１゛から０
°゛に変化し、昇温表示の場合と、冷却運転の制御とで
Ａ点電圧を形成する抵抗を変え、主制御回路８の入力状
態によりコンプレッサ２２のオン、オフ、昇温表示ラン
プ２７の点燈、消燈動作を行うものである。In this way, the oscillation circuit 10 sends a clock signal to the timing circuit 9, and the timing circuit 9 counts and outputs the clock signal, and E ranges from "0" to "6199." “1゛ to 0
The resistance that forms the A point voltage is changed depending on the temperature rise display and cooling operation control, and the compressor 22 is turned on or off depending on the input state of the main control circuit 8, and the temperature rise display lamp 27 is turned on and off depending on the input state of the main control circuit 8. It performs the operation of turning on and off the light.
尚、実施例においては、冷蔵庫に適用した例を示したが
、コンプレッサをヒータに変えることにより、温蔵庫に
も適用でき、さらに、昇温表示の変りに降温表示等に利
用できることは言うまでもない。In addition, in the example, an example of application to a refrigerator was shown, but it goes without saying that by replacing the compressor with a heater, it can also be applied to a refrigerator, and furthermore, it can be used to display a temperature drop instead of a temperature increase display. .
以上述べた本考案によれば、庫内温度を検出するサーミ
スタ等の素子を１個有して、タイミング回路により、比
較回路の入力電圧を形成する抵抗を用途に応じて変える
ことで、制御でき、従来のように用途別にサーミスタを
必要とし、高価になる欠点を解消し、安価で、簡単な回
路構成で提供できる等の効果を有するものである。According to the present invention described above, it has one element such as a thermistor that detects the temperature inside the refrigerator, and can be controlled by using a timing circuit to change the resistance that forms the input voltage of the comparator circuit depending on the application. This eliminates the conventional disadvantage of requiring a thermistor for each application and being expensive, and has the advantage that it can be provided at low cost and with a simple circuit configuration.
図面は本考案の一実施例を示す電気配線図である。
１・・・・・・サーミスタ（素子）、２・・・・・・比
較回路、４・・・・・・比較回路、８・・・・・・主制
御回路、９・・・・・・タイミング回路、１１・・・・
・・警告装置用抵抗、１５・・・・・・温度調節用ボリ
ウム、２２・・・・・・コンプレッサ、２７・・・・・
・昇温表示ランプ。The drawing is an electrical wiring diagram showing one embodiment of the present invention. 1... Thermistor (element), 2... Comparison circuit, 4... Comparison circuit, 8... Main control circuit, 9... Timing circuit, 11...
...Resistor for warning device, 15...Volume for temperature adjustment, 22...Compressor, 27...
・Temperature increase indicator lamp.
Claims (1)
プレッサ等の熱源装置および昇温表示等の警告装置の０
Ｎ−ＯＦＦ動作を制御する比較回路と、前記比較回路の
出力により前記熱源装置および警告装置を作動する主制
御回路を備え、かつ前記比較回路の前記素子側の入力電
圧を前記サーミスタと警告装置用抵抗とで形成する状態
と前記サーミスタと温度調節用ポリウムとで形成する状
態とに所定周期で切換えるタイミング回路を備えてなる
冷蔵庫等の温度検出装置。A single thermistor or other element that detects the internal temperature, a heat source device such as a compressor, and a warning device such as a temperature rise display.
a comparison circuit that controls N-OFF operation; and a main control circuit that operates the heat source device and the warning device based on the output of the comparison circuit; A temperature detection device for a refrigerator or the like, comprising a timing circuit that switches at a predetermined period between a state formed by a resistor and a state formed by the thermistor and temperature-adjusting polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18352379U JPS604053Y2 (en) | 1979-12-26 | 1979-12-26 | Temperature detection device for refrigerators, etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18352379U JPS604053Y2 (en) | 1979-12-26 | 1979-12-26 | Temperature detection device for refrigerators, etc. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5699389U JPS5699389U (en) | 1981-08-05 |
| JPS604053Y2 true JPS604053Y2 (en) | 1985-02-04 |
Family
ID=29693801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18352379U Expired JPS604053Y2 (en) | 1979-12-26 | 1979-12-26 | Temperature detection device for refrigerators, etc. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS604053Y2 (en) |
-
1979
- 1979-12-26 JP JP18352379U patent/JPS604053Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5699389U (en) | 1981-08-05 |
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