JPS64545Y2 - - Google Patents
Info
- Publication number
- JPS64545Y2 JPS64545Y2 JP1982172401U JP17240182U JPS64545Y2 JP S64545 Y2 JPS64545 Y2 JP S64545Y2 JP 1982172401 U JP1982172401 U JP 1982172401U JP 17240182 U JP17240182 U JP 17240182U JP S64545 Y2 JPS64545 Y2 JP S64545Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- refrigerator
- comparison circuit
- section
- time
- 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
- 238000001514 detection method Methods 0.000 claims description 15
- 230000007257 malfunction Effects 0.000 claims description 10
- 238000009529 body temperature measurement Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000005856 abnormality Effects 0.000 description 21
- 238000010257 thawing Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000007423 decrease Effects 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Description
【考案の詳細な説明】
本考案は、冷凍庫又は冷蔵庫の庫内温度を実測
して該庫の冷凍又は冷蔵機能異常を検出しかつま
たそれを表示又は報知する温度検出装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a temperature detection device that actually measures the internal temperature of a freezer or refrigerator, detects an abnormality in the freezing or refrigeration function of the refrigerator, and also displays or notifies the abnormality.
従来より冷凍庫又は冷蔵庫の機能異常を検出す
るためには温度検出装置が用いられているが、従
来の温度検出装置は庫内温度に対して上限温度又
は下限温度を設定し、一定の時間に渡つて実測庫
内温度がこれらの上限温度又は下限温度を超過し
続けたときには機能異常が発生しているものとし
て出力信号を発出する構成が採られている。すな
わち、上限温度又は下限温度を超過後に庫内温度
が再び限度内に戻る傾向に有るか又は限度外を維
持又は益々超過状態を増加させて行く傾向にある
か等の推移を微細に判別する能力は有していな
い。更に冷凍庫又は冷蔵庫は多く霜取り機能を有
しているため一定時間、冷凍又冷蔵機能を停止す
ることがある。故に従来のこの種温度検出装置
は、庫内温度の上昇が、少くとも霜取り時間より
長時間に亘つて設定上限温度を超過継続したと
き、機能異常として判断する構成が採られるので
必然的に機能異常検出に長時間を要するという不
都合があり、しかも霜取り機能を有しない冷凍庫
や冷蔵庫に用いる場合にも簡単に機能異常検出時
間を短縮する手段を具備していないものが多い。
つまり、霜取り機能の有無によつて使い分け得る
多様性を有していない。 Temperature detection devices have traditionally been used to detect malfunctions in freezers or refrigerators, but conventional temperature detection devices set an upper or lower limit temperature for the internal temperature and detect When the actually measured internal temperature continues to exceed the upper limit temperature or the lower limit temperature, it is assumed that a malfunction has occurred and an output signal is issued. In other words, the ability to finely determine whether the temperature inside the refrigerator tends to return to within the limits after exceeding the upper limit temperature or lower limit temperature, or whether it tends to remain outside the limits or to increasingly exceed the limits. does not have. Furthermore, since many freezers and refrigerators have a defrosting function, the freezing or refrigeration function may be stopped for a certain period of time. Therefore, conventional temperature detection devices of this type are configured to determine a malfunction when the internal temperature rise continues to exceed the set upper limit temperature for at least a longer period of time than the defrosting time, so it is inevitable that the device will malfunction. There is an inconvenience that it takes a long time to detect an abnormality, and even when used in a freezer or refrigerator that does not have a defrosting function, many of them do not have a means to easily shorten the time for detecting a functional abnormality.
In other words, it does not have the versatility to be used depending on whether or not it has a defrosting function.
従つて、本考案の目的は、冷凍庫又は冷蔵庫の
庫内温度を継続的に実測すると共にこれらの実測
温度が上限又は下限の設定基準温度を超過したと
きにはそれらの温度の推移傾向を検出して庫内温
度が設定基準温度内へ復帰する傾向がないときに
のみ機能異常と判別することにより比較的短時間
に機能異常を検出できるようにした温度検出装置
を提供することにある。 Therefore, the purpose of the present invention is to continuously measure the internal temperature of a freezer or refrigerator, and when the measured temperature exceeds the upper or lower set standard temperature, to detect the trends in temperature and to It is an object of the present invention to provide a temperature detection device capable of detecting a functional abnormality in a relatively short period of time by determining a functional abnormality only when the internal temperature does not tend to return to a set reference temperature.
本考案によれば、冷凍庫又は冷蔵庫の庫内温度
を実測して該庫の機能異常を検出し得るようにす
る温度検出装置において、庫内温度を継続測定す
る測温部と、前記冷凍庫又は冷蔵庫の機能正常限
界に対応した基準温度を設定発生する温度設定部
と、前記測温部からの実測温度情報と前記温度設
定部からの基準温度とを比較し、該実測温度情報
が該基準温度情報を超過したとき出力を生じる第
一判別部と、前記第一判別部の出力が生じたとき
作動し、前記庫内の実測温度が基準温度以内へ復
帰する傾向あるか基準温度超過を維持する傾向に
あるかを前記実測温度情報における前後２つの値
の差から判断することを繰り返す比較回路と該比
較回路が、予め設定された時間に渡つて継続的に
前記維持傾向にあることを判断する限り計時を続
行し、その計時々間が前記設定時間を越えたとき
信号を出力する計時器とを具えた第二判別部と、
前記第二判別部が前記維持傾向にあることを判断
したときその信号を受信して前記冷凍庫又は冷蔵
庫の機能異常を表示又は報知する警報部とを具備
して構成されることを特徴とする温度検出装置が
提供され、このとき同装置の上記第二判別部は上
記の設定時間の増減調節手段を具備して更に上記
温度設定部は基準温度の可変手段を具備して冷凍
庫又は冷蔵庫の霜取り機能の有無に従つて設定時
間又は基準温度を変えるようにすることもでき
る。以下、本考案を添付図面に示す実施例に基づ
き詳細に説明する。 According to the present invention, there is provided a temperature detection device that measures the internal temperature of a freezer or a refrigerator to detect a malfunction of the refrigerator, which includes a temperature measuring section that continuously measures the internal temperature of the freezer or the refrigerator; A temperature setting section that generates a reference temperature that corresponds to the functional normal limits of a first discrimination section that generates an output when the temperature exceeds the reference temperature, and a first discrimination section that operates when the output of the first discrimination section is generated, and whether the actual measured temperature in the refrigerator tends to return to within the reference temperature or maintain the temperature above the reference temperature. as long as the comparison circuit repeatedly judges from the difference between the two values before and after the actual measured temperature information, and the comparison circuit continuously determines that the tendency is maintained over a preset period of time. a second determining unit comprising a timer that continues to measure time and outputs a signal when the measured time exceeds the set time;
and an alarm unit that receives a signal when the second determination unit determines that the temperature is in the maintenance tendency and displays or notifies a malfunction of the freezer or refrigerator. A detection device is provided, in which the second discrimination section of the device is provided with a means for adjusting the increase/decrease of the set time, and the temperature setting section is further provided with a means for varying the reference temperature to control the defrosting function of the freezer or refrigerator. It is also possible to change the set time or reference temperature depending on the presence or absence of. Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.
第１図は本考案による温度検出装置の実施例に
おける構成を示すブロツク図である。同図におい
て、温度検出装置は冷凍庫又は冷蔵庫（以下、単
に庫と記載する）の庫内温度を実測する測温部
１、庫の機能異常を検出する際の上限又は下限の
基準温度を設定発生する温度設定部２、実測温度
と基準温度の比較判別を行なう第一判別部３、庫
内温度が基準温度を超過したときその庫内温度の
推移傾向を検出して庫の機能異常を判別する第二
判別部４、上記第二判別部４から機能異常を示す
出力があつたときに異常表示又は異常報知をおこ
なう警報部５を有して構成されている。さて、上
記測温部１は例えば周知のサーミスタ素子からな
る測温体６とこの測温体６が実測した庫内温度を
他の物理定数に変換する変換回路７とを具備して
いる。この場合に測温体６としてサーミスタ素子
が用いられた場合には庫内温度変化に対応するサ
ーミスタ素子の電気抵抗値変化を更に電気的周波
数変化に変換する抵抗−周波数変換回路を上記変
換回路７として用いることができ、以下において
はこの例に就いて説明する。なお、サーミスタ素
子は温度上昇に従つて抵抗値が減少する特性を有
し、従がつて変換回路７は抵抗値の減少に従つて
周波数が上昇する。一方、温度設定部２は、庫の
機能異常を検出する基準温度を温度設定器８を有
し、この温度設定器８は本実施例の場合には可変
抵抗器から形成される。また、温度設定部２は温
度設定器８におき基準温度に対応して設定された
電気抵抗値を周波数に変換する変換回路９を具備
し、この変換回路９は測温部１の変換回路７と等
価に形成されている。なお、温度設定器８は庫内
の上限基準温度、すなわち温度上昇限度を設定す
る場合もあり、また下限基準温度、すなわち温度
下降限度を設定する場合もある。第一判別部３
は、上記の二つの変換回路７，９に接続されて庫
内の実測温度と温度設定部２で設定発生された基
準温度とを比較判別する第一比較回路１０と、こ
の第一比較回路１０を作動させるクロツクパルス
を発生するパルス発振器１１と、上記測温部１の
変換回路７および第一比較回路１０と接続された
後述の遅延回路１２とを具備している。また、第
二判別部４には変換回路７からの庫内実測温の情
報を第一比較回路１０からの駆動制御信号により
遅延回路１２を介して一時的に記憶する第一レジ
スタ１３、第一比較回路１０からの駆動制御信号
に従つて第一レジスタ１３から送出される温度情
報を一時的に記憶する第二レジスタ１４、上記第
一レジスタ１３と第二レジスタ１４からの両温度
情報が入力されるとこれらを比較することによつ
て後述のように温度の推移傾向を比較判断する第
二比較回路１５、上記第一判別部３の第一比較回
路１０と第二判別部４の第二比較回路１５とに接
続され、該第一比較回路１０からの駆動制御信号
によつて作動し、第二比較回路１５又は第一比較
回路１０から作動停止用の停止制御信号又はリセ
ツト信号を受けると停止する可変調節タイマー１
６等が具備されている。なお警報部５の具体的構
成としてはランプ又はブザーによつて異常表示を
行うと共に外部へ異常信号の送出が可能に形成さ
れているものである。 FIG. 1 is a block diagram showing the structure of an embodiment of the temperature detection device according to the present invention. In the figure, the temperature detection device is a temperature measurement unit 1 that actually measures the temperature inside the freezer or refrigerator (hereinafter simply referred to as the refrigerator), and a temperature measurement unit 1 that sets the upper or lower reference temperature when detecting a malfunction in the refrigerator. a temperature setting unit 2 for comparing and determining the actual measured temperature and a reference temperature; a first determining unit 3 for comparing and determining the actual measured temperature and a reference temperature; and a first determining unit 3 for determining a functional abnormality in the refrigerator by detecting a trend in the temperature inside the refrigerator when the temperature inside the refrigerator exceeds the reference temperature. It is comprised of a second discrimination section 4 and an alarm section 5 that displays or reports an abnormality when an output indicating a functional abnormality is received from the second discrimination section 4. The temperature measuring section 1 includes a temperature measuring element 6 made of, for example, a well-known thermistor element, and a conversion circuit 7 for converting the internal temperature actually measured by the temperature measuring element 6 into other physical constants. In this case, when a thermistor element is used as the temperature measuring element 6, the resistance-frequency conversion circuit 7 converts the change in the electrical resistance value of the thermistor element corresponding to the temperature change inside the refrigerator into an electrical frequency change. This example will be explained below. Note that the thermistor element has a characteristic that the resistance value decreases as the temperature rises, and therefore the frequency of the conversion circuit 7 increases as the resistance value decreases. On the other hand, the temperature setting unit 2 has a temperature setting device 8 for setting a reference temperature for detecting a malfunction in the storage, and in this embodiment, the temperature setting device 8 is formed of a variable resistor. Further, the temperature setting section 2 includes a conversion circuit 9 that converts the electrical resistance value set in the temperature setting device 8 corresponding to the reference temperature into a frequency, and this conversion circuit 9 is connected to the conversion circuit 7 of the temperature measurement section 1. is formed equivalently. Note that the temperature setting device 8 may set an upper reference temperature in the refrigerator, that is, a temperature rise limit, and may also set a lower limit reference temperature, that is, a temperature fall limit. First discrimination section 3
The first comparison circuit 10 is connected to the above two conversion circuits 7 and 9 and compares and discriminates the actual measured temperature inside the refrigerator with the reference temperature set and generated by the temperature setting section 2, and this first comparison circuit 10 The temperature measuring section 1 includes a pulse oscillator 11 that generates a clock pulse for operating the temperature measuring section 1, and a delay circuit 12, which will be described later, and which is connected to the conversion circuit 7 and the first comparison circuit 10 of the temperature measurement section 1. The second determination unit 4 also includes a first register 13 that temporarily stores information on the actual temperature inside the refrigerator from the conversion circuit 7 via a delay circuit 12 in response to a drive control signal from the first comparison circuit 10; A second register 14 temporarily stores temperature information sent from the first register 13 in accordance with a drive control signal from the comparator circuit 10, and both temperature information from the first register 13 and the second register 14 are inputted. and a second comparison circuit 15 which compares and determines the trend of temperature change as described later by comparing these, and a second comparison circuit between the first comparison circuit 10 of the first discrimination section 3 and the second discrimination section 4. It is connected to the circuit 15, operates in response to the drive control signal from the first comparison circuit 10, and stops when it receives a stop control signal or a reset signal for stopping the operation from the second comparison circuit 15 or the first comparison circuit 10. Variable adjustment timer 1
Equipped with 6th grade. The specific configuration of the alarm unit 5 is such that it can display an abnormality using a lamp or a buzzer and can also send an abnormality signal to the outside.
次に上述した実施例の作用を説明する。 Next, the operation of the above-described embodiment will be explained.
庫の機能異常検出に当つては、庫内に測温部１
が取付けられ、継続的に庫内の温度が実測され
る。また温度設定部２においては機能異常の検出
基準となる上限又は下限の基準温度が温度設定器
８によつて設定される。この結果として測温部１
からの実測の温度値に対応した周波数値が時々
刻々の値として第一比較回路１０に印加され、ま
た温度設定部２からの基準温度値に対応した周波
数値（設定変更をしない限り一定値）が第一比較
回路１０に印加される。このとき第一比較回路１
０はパルス発振器１１からの刻時パルス信号を受
信する都度、上述に印加された両周波数値の比較
を行い庫内実測温が基準温度内にあるか或いは超
過しているかを比較判別する。いま、測温部１か
らの実測温に対応した周波数値をs2、この周波
数値s2の１回前の実測温に対応した周波数値を
s1であるとする。更に温度設定部２における例
えば上限基準温度値に対応した周波数をvとする
と、第一比較回路１０はパルス発振器１１からの
刻時パルス信号に応じてvとs2とを比較するの
である。比較の結果、v＞s2のときは庫内の実
測温が上限基準温度内にあることを意味し、従つ
て第一比較回路１０は停止制御信号を第一、第二
レジスタと遅延回路１２とタイマー１６へ出力す
る。即ち、第一レジスタ１３と第二レジスタ１４
は、記憶されている内容をクリヤーし、タイマー
は停止する。一方 v≦s2のときは庫内の実測
温が上限基準温度に等しいかこれを過ぎたこと
（両者を含めて超過という。）を意味し、このとき
第一比較回路１０は駆動制御信号を出力して遅延
回路１２と第一レジスタ１３とタイマー１６に印
加する。タイマー１６はこのとき作動を開始す
る。第一レジスタ１３はこの制御信号を受信する
と、該第一レジスタ１３に遅延回路１２を介して
先に一時的に記憶されている前回の実測温に対応
した周波数s1を第二レジスタ１４へ移送する。
そしてこのs1を第二レジスタへ移送後に第一比
較回路１０からの駆動制御信号により遅延回路１
２を介して今回の実測温に対応した周波数s2を
記憶する。これら第二レジスタ１４に記憶された
s1と第一レジスタ１３に記憶されたs2は次に第
二比較回路１５に印加されて、そこで両者の比較
がおこなわれる。つまり庫内の実測温が続けて２
回基準温度を越えたとき前回の実測温と今回の実
測温との比較によつて温度の推移傾向が判別され
るのである。但し、第一比較回路１０によつて、
初めて超過したと判別されたときは、第二レジス
タには前回の実測温に対応した周波数が入力され
ないため、第二比較回路において判別されない
が、タイマーは動作する。なお、上述した遅延回
路１２は第一レジスタ１３から第二レジスタ１４
へのs1の移送と第一レジスタ１３へのs2の記憶
のタイミングを適正にするように予め遅延定数を
選定してある。第二比較回路１５はs1≦s2のと
きは、基準上限温度を超過したにもかかわらず、
依然として庫内が温度上昇を続けていることを比
較判別し、このときにはタイマー１６の作動を放
置すべく、タイマー１６の作動停止用の停止制御
信号を送出しない。また、s1＞s2のときは、基
準上限温度を超過しているが庫内温度は下降の傾
向を示していることを判別し、タイマー１６の作
動を停止し、クリヤーすべく停止制御信号を送出
し、タイマー１６に再度作動開始用の制御信号が
入力されたとき作動開始するように準備させる。
このとき第二比較回路１５からの停止制御信号
は、第一レジスタ１３と第二レジスタ１４へ出力
され記憶されている内容をクリヤーする。このよ
うにして第一判別部３と第二判別部４は庫内温度
を継続的に実測しながらパルス発振器１１の刻時
パルスに応じて基準設定温度との比較を繰り返
す。この間に温度推移傾向が基準設定温度に向け
て復帰傾向を示さないときは、第二比較回路１５
からタイマー１６へ制御信号が送出されないから
タイマー１６は予め設定調整された時間まで動作
を継続する。そして設定時間が経過するまで作動
停止用の制御信号を第一比較回路１０又は第二比
較回路１５から受けなかつたときは庫に機能異常
が発生しているものとして警報器５へ異常出力を
送出する。 In order to detect abnormality in the function of the refrigerator, there is a temperature measurement unit 1 inside the refrigerator.
is installed, and the temperature inside the refrigerator is continuously measured. Further, in the temperature setting section 2, an upper or lower limit reference temperature is set by a temperature setting device 8, which is a standard for detecting a functional abnormality. As a result, the temperature measuring section 1
A frequency value corresponding to the actually measured temperature value from the temperature setting section 2 is applied to the first comparison circuit 10 as a momentary value, and a frequency value corresponding to the reference temperature value from the temperature setting section 2 (a constant value unless the setting is changed). is applied to the first comparison circuit 10. At this time, the first comparison circuit 1
Each time the clock pulse signal from the pulse oscillator 11 is received, the controller 0 compares the above-mentioned applied frequency values to determine whether the actual temperature inside the refrigerator is within the reference temperature or exceeds the reference temperature. Now, let s2 be the frequency value corresponding to the actually measured temperature from temperature measuring section 1, and let s2 be the frequency value corresponding to the actually measured temperature one time before this frequency value s2.
Suppose it is s1 . Furthermore, if the frequency corresponding to, for example, the upper limit reference temperature value in the temperature setting section 2 is v , the first comparison circuit 10 compares v and s2 in accordance with the clock pulse signal from the pulse oscillator 11. As a result of the comparison, when v > s2 , it means that the actual temperature inside the refrigerator is within the upper limit reference temperature, and therefore the first comparison circuit 10 sends the stop control signal to the first and second registers and the delay circuit 12. Output to timer 16. That is, the first register 13 and the second register 14
clears the stored contents and stops the timer. On the other hand, when v ≦ s2 , it means that the actual temperature inside the refrigerator is equal to or exceeds the upper limit reference temperature (both are referred to as exceeded), and in this case, the first comparison circuit 10 outputs a drive control signal. and is applied to the delay circuit 12, first register 13, and timer 16. Timer 16 starts operating at this time. When the first register 13 receives this control signal, it transfers the frequency s1 corresponding to the previous measured temperature, which has been temporarily stored in the first register 13 via the delay circuit 12, to the second register 14. .
After transferring this s1 to the second register, the delay circuit 1
2, the frequency s2 corresponding to the current measured temperature is stored. stored in these second registers 14.
s1 and s2 stored in the first register 13 are then applied to the second comparison circuit 15, where a comparison between them is performed. In other words, the actual temperature inside the refrigerator is 2 in a row.
When the reference temperature is exceeded, the temperature trend is determined by comparing the previous measured temperature with the current measured temperature. However, by the first comparison circuit 10,
When it is determined for the first time that the temperature has been exceeded, the frequency corresponding to the previously measured temperature is not input to the second register, so the second comparison circuit does not determine the temperature, but the timer operates. Note that the above-described delay circuit 12 is connected to the first register 13 to the second register 14.
A delay constant is selected in advance so that the timing of transferring s1 to the first register 13 and storing s2 to the first register 13 is appropriate. When s1 ≦ s2 , the second comparison circuit 15 detects that even though the reference upper limit temperature has been exceeded,
It is compared and determined that the temperature inside the refrigerator is still rising, and in this case, a stop control signal for stopping the operation of the timer 16 is not sent out in order to leave the operation of the timer 16 alone. In addition, when s1 > s2 , it is determined that although the standard upper limit temperature is exceeded, the temperature inside the refrigerator is showing a downward trend, and the operation of the timer 16 is stopped and a stop control signal is sent to clear the temperature. Then, the timer 16 is prepared to start operating when the control signal for starting the operation is inputted again.
At this time, the stop control signal from the second comparison circuit 15 is output to the first register 13 and the second register 14 to clear the stored contents. In this way, the first discriminating section 3 and the second discriminating section 4 repeatedly measure the temperature inside the refrigerator and compare it with the standard set temperature according to the clock pulse of the pulse oscillator 11. During this period, if the temperature trend does not show a tendency to return to the reference set temperature, the second comparison circuit 15
Since no control signal is sent to the timer 16 from the timer 16, the timer 16 continues to operate until the preset and adjusted time. If the control signal for stopping the operation is not received from the first comparison circuit 10 or the second comparison circuit 15 until the set time has elapsed, it is assumed that a functional abnormality has occurred in the warehouse, and an abnormality output is sent to the alarm 5. do.
上述の説明から明らかなように、本考案による
温度検出装置は庫の庫内実測温が基準設定温度を
超過したときには、その庫内実測温の推移傾向を
検出し、単なる一時的な異常のとき、または庫自
体が冷凍又は冷蔵機能における自力制御能力を失
つていないときには機能異常が無いものと判断す
るので、機能異常を従来の装置と比較して短時間
に検出できるのである。 As is clear from the above explanation, the temperature detection device according to the present invention detects the trend of the actual temperature inside the refrigerator when it exceeds the standard set temperature, and detects the trend of the actual temperature inside the refrigerator when it is a mere temporary abnormality. Or, if the refrigerator itself has not lost its self-control ability in the freezing or refrigeration function, it is determined that there is no functional abnormality, so it is possible to detect a functional abnormality in a shorter time than with conventional devices.
なお、温度設定部２による基準温度の設定は上
限基準温度で庫の管理を行うことが必要な場合に
は上限基準温度を設定し、また下限基準温度で庫
の管理を行うことが必要な場合には下限基準温度
を設定し、庫内実測温がこれらの基準温度値を超
過した場合の機能異常検出を行えばよいのであ
る。また、上限、下限の両基準値に就いて共通の
測温部１を用いて機能異常を検出することも可能
であり、特に第一、第二判別部３，４を周知のマ
イクロプロセツサで構成すれば、上限基準温度又
は下限基準温度の何れか一方のみの管理のみなら
ず、両基準温度に基づく管理を行う温度検出装置
を比較的コンパクトに形成することができる。 In addition, when setting the reference temperature by the temperature setting unit 2, the upper limit reference temperature is set when it is necessary to manage the refrigerator at the upper limit reference temperature, and when it is necessary to manage the refrigerator at the lower limit reference temperature. It is only necessary to set lower limit reference temperatures for these values, and to detect a functional abnormality when the actual temperature inside the refrigerator exceeds these reference temperature values. It is also possible to detect a functional abnormality using a common temperature measuring section 1 for both the upper limit and lower limit reference values. With this configuration, it is possible to form a relatively compact temperature detection device that not only manages only either the upper limit reference temperature or the lower limit reference temperature, but also controls based on both reference temperatures.
また、上述の実施例は温度値を電気的周波数に
対応変換することによつて機能異常を検出する構
成例を示したが、温度値を他の物理定数、例えば
電圧値に対応変換することによつても同様に本考
案の目的は達成を得る。 Furthermore, while the above-described embodiment shows a configuration example in which a functional abnormality is detected by converting a temperature value into a corresponding electrical frequency, the object of the present invention can be similarly achieved by converting a temperature value into a corresponding other physical constant, for example, a voltage value.
更に霜取り機能のある冷凍庫又は冷蔵庫に設置
する場合にはタイマー１６の設定時間を霜取り時
間より長く設定し、霜取り機能のない庫の場合に
はタイマー１６の設定時間を短かくすることによ
つて何れの庫にも多様的に本装置を適用すること
ができる。このとき、霜取り機能を有する庫の場
合には霜取り動作開始と終了時に信号をとりだ
し、この信号によつて例えばタイマー１６の設定
時間を長短切替設定するように構成することもで
きる。 Furthermore, when installing in a freezer or refrigerator with a defrosting function, the setting time of the timer 16 is set longer than the defrosting time, and in the case of a refrigerator without a defrosting function, the setting time of the timer 16 is shortened. This device can also be applied to storage in various ways. At this time, in the case of a refrigerator having a defrosting function, a signal may be taken out at the start and end of the defrosting operation, and the setting time of the timer 16, for example, can be switched between long and short based on these signals.
一方、タイマー１６による時間設定に換えて刻
時パルス発振器１１のパルスをカウンタ装置でカ
ウントし、予め設定したカウント数の間になお温
度推移が復帰傾向を示さないときには異常出力を
送出する実施例とすることもできる。また測温部
１の測温体は既述のサーミスタ素子の他に白金測
温抵抗体、ダイオード等の周知測温素子を用いて
構成してもよい。更に推移傾向を判別する方法と
しては、第一レジスタ，第二レジスタに実測温を
順次記憶して、第一比較回路にて基準温度を超過
したときのみ第二比較回路を動作させる様にして
もよい。本考案の温度検出装置は実用に当つては
庫内に測温部を構成するサーミスタを設置すると
共に他の構成部分は別体として庫外に設置しても
よいし、温度設定部と警報部とを一種の受信手段
とし、測温部、第一、第二判別部を温度感知手段
とした分離構成を採ることができる。そして、こ
のときには一つの受信手段に複数の温度感知手段
を接続し、複数の庫を走査管理することも可能で
ある。 On the other hand, there is an embodiment in which the pulses of the clock pulse oscillator 11 are counted by a counter device instead of the time setting by the timer 16, and an abnormal output is sent out if the temperature trend still does not show a recovery tendency within a preset number of counts. You can also. Further, the temperature measuring element of the temperature measuring section 1 may be constructed using a well-known temperature measuring element such as a platinum temperature measuring resistor or a diode in addition to the above-mentioned thermistor element. Furthermore, as a method for determining the trend, the measured temperature may be stored in the first register and the second register sequentially, and the second comparison circuit may be operated only when the first comparison circuit exceeds the reference temperature. good. In practical use, the temperature detection device of the present invention may be implemented by installing a thermistor constituting the temperature measuring part inside the refrigerator, while other components may be installed separately outside the refrigerator, or by installing a temperature setting part and an alarm part. A separate configuration can be adopted in which the temperature measurement section and the first and second discrimination sections are used as a kind of temperature sensing means. At this time, it is also possible to connect a plurality of temperature sensing means to one receiving means to scan and manage a plurality of warehouses.
図は本考案による温度検出装置の実施例の構成
を示すブロツク図である。
１……測温部、２……温度設定部、３……第一
判別部、４……第二判別部、５……警報部。
The figure is a block diagram showing the configuration of an embodiment of a temperature detection device according to the present invention: 1... temperature measuring section, 2... temperature setting section, 3... first discrimination section, 4... second discrimination section, 5... alarm section.
Claims (1)
の機能異常を検出し得るようにする温度検出装
置において、庫内温度を継続測定する測温部１
と、前記冷凍庫又は冷蔵庫の機能正常限界に対
応した基準温度を設定発生する温度設定部２
と、前記測温部１からの実測温度情報と前記温
度設定部からの基準温度とを比較し、該実測温
度情報が該基準温度情報を超過したとき出力を
生じる第一判別部３と、前記第一判別部３の出
力が生じたとき作動し、前記庫内の実測温度が
基準温度以内へ復帰する傾向にあるか基準温度
超過を維持する傾向にあるかを前記実測温度情
報における前後２つの値の差から判断すること
を繰り返す比較回路１５と該比較回路１５が、
予め設定れた時間に渡つて継続的に前記維持傾
向にあることを判断する限り計時を続行し、そ
の計時々間が前記設定時間を越えたとき信号を
出力する計時器１６とを具えた第二判別部４
と、その第二判別部４の出力信号を受信して前
記冷凍庫又は冷蔵庫の機能異常を表示又は報知
する警報部５とを具備して構成されることを特
徴とする温度検出装置。 ２ 前記第二判別部４の前記計時器１６は、前記
設定時間の加減調節手段を具備したタイマーか
ら成る実用新案登録請求の範囲第１項に記載の
温度検出装置。 ３ 前記温度設定部２は、前記基準温度を加減設
定する可変手段を具備してなる実用新案登録請
求の範囲第１項または第２項に記載の温度検出
装置。[Scope of Claim for Utility Model Registration] 1. Temperature measuring unit 1 that continuously measures the temperature inside the refrigerator in a temperature detection device that actually measures the temperature inside the freezer or refrigerator to detect malfunctions in the refrigerator.
and a temperature setting unit 2 that sets and generates a reference temperature corresponding to the normal functional limit of the freezer or refrigerator.
a first determining unit 3 that compares the measured temperature information from the temperature measurement unit 1 with the reference temperature from the temperature setting unit and generates an output when the measured temperature information exceeds the reference temperature information; It operates when the output of the first discrimination section 3 occurs, and determines whether the actually measured temperature in the refrigerator tends to return to within the reference temperature or maintains the temperature above the reference temperature by comparing the two before and after in the actually measured temperature information. A comparison circuit 15 that repeats judgment based on the difference in values and the comparison circuit 15,
A clock 16 that continues to measure time as long as it is determined that the maintenance trend continues for a preset time, and outputs a signal when the measured time exceeds the set time. 2 discriminator 4
and an alarm section 5 that receives the output signal of the second discrimination section 4 and displays or notifies a malfunction of the freezer or refrigerator. 2. The temperature detecting device according to claim 1, wherein the timer 16 of the second determining section 4 is a timer including means for adjusting the set time. 3. The temperature detection device according to claim 1 or 2, wherein the temperature setting unit 2 includes variable means for adjusting or decreasing the reference temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17240182U JPS5976967U (en) | 1982-11-16 | 1982-11-16 | temperature detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17240182U JPS5976967U (en) | 1982-11-16 | 1982-11-16 | temperature detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5976967U JPS5976967U (en) | 1984-05-24 |
| JPS64545Y2 true JPS64545Y2 (en) | 1989-01-09 |
Family
ID=30375811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17240182U Granted JPS5976967U (en) | 1982-11-16 | 1982-11-16 | temperature detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5976967U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0631388Y2 (en) * | 1988-01-08 | 1994-08-22 | 三菱重工業株式会社 | Temperature recorder |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5423369B2 (en) * | 1974-08-21 | 1979-08-13 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5423369U (en) * | 1977-07-19 | 1979-02-15 | ||
| JPS5570793U (en) * | 1978-11-07 | 1980-05-15 | ||
| JPS5572085U (en) * | 1978-11-10 | 1980-05-17 |
-
1982
- 1982-11-16 JP JP17240182U patent/JPS5976967U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5423369B2 (en) * | 1974-08-21 | 1979-08-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5976967U (en) | 1984-05-24 |
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