JPH08201321A - Drying progress degree measuring method and dry sensor - Google Patents
Drying progress degree measuring method and dry sensorInfo
- Publication number
- JPH08201321A JPH08201321A JP1005595A JP1005595A JPH08201321A JP H08201321 A JPH08201321 A JP H08201321A JP 1005595 A JP1005595 A JP 1005595A JP 1005595 A JP1005595 A JP 1005595A JP H08201321 A JPH08201321 A JP H08201321A
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- Japan
- Prior art keywords
- temperature
- sensor
- sheath
- dry
- monitor
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Washing And Drying Of Tableware (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、相対湿度の変化の測
定、特に相対湿度の経時的な変化から乾燥の進行状況を
検知する方法及びこの方法に使用するドライセンサに関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring changes in relative humidity, and more particularly to a method for detecting the progress of drying from changes in relative humidity over time and a dry sensor used in this method.
【０００２】[0002]
【従来の技術】相対湿度あるいは相対湿度の経時的変化
を測定する測器としては湿度計がある。代表的な湿度計
には、従来より乾湿湿度計，通風湿度計，伸縮式湿度
計，露点湿度計，電気湿度計，赤外線湿度計などが知ら
れている。しかし、これらの湿度計は大気中の湿度の測
定に用いるものである。2. Description of the Related Art There is a hygrometer as a measuring instrument for measuring relative humidity or a change with time of relative humidity. As typical hygrometers, psychrometers, ventilation hygrometers, telescopic hygrometers, dew point hygrometers, electric hygrometers, infrared hygrometers, etc. have been conventionally known. However, these hygrometers are used to measure atmospheric humidity.
【０００３】[0003]
【発明が解決しようとする課題】一方、空調設備や電子
レンジの湿度センサとして電気抵抗が湿度によって変化
するセラミックセンサが知られている。これらの湿度セ
ンサにおいても前記湿度計と同じことであり、空調設備
が設置された室内や電子レンジ内の雰囲気の湿度を測定
することができるが、室内に置かれた「もの」の湿度や
電子レンジ内の調理物の湿度が測定できるわけではな
い。On the other hand, a ceramic sensor whose electric resistance changes with humidity is known as a humidity sensor for air conditioning equipment and microwave ovens. These humidity sensors are also the same as the above-mentioned hygrometer, and can measure the humidity of the atmosphere in the room where the air conditioning equipment is installed or in the microwave oven. It is not possible to measure the humidity of cooked food in the range.
【０００４】例えば、食器類の洗浄機では、洗浄機内に
収容された被処理物に最初水を噴付けて水洗処理し、次
いで乾燥空気を噴き込んで乾燥処理が行われるが、洗浄
機内に乾燥空気の噴き込みによって洗浄機内が或る程度
乾燥雰囲気になったとしても、必ずしも機内の被洗浄物
の乾燥処理が完了したことにはならない。機内の被処理
物が実際に乾燥したかどうかを判断するには、被処理物
の湿度を直接測定しなければならないが、現実には皿，
食器類に湿度センサを接触させてその湿度を測定するこ
とは難しい。[0004] For example, in a dishwasher, the object to be treated contained in the dishwasher is first sprayed with water to wash it, and then dry air is blown into the dish to dry it. Even if the inside of the washing machine is brought into a dry atmosphere to some extent by the blowing of air, it does not necessarily mean that the drying process of the article to be washed inside the machine is completed. In order to determine whether the object to be processed in the machine actually dried, the humidity of the object to be processed must be directly measured.
It is difficult to measure the humidity by contacting the tableware with a humidity sensor.
【０００５】本発明の目的は、モニタを用いて被処理物
の乾燥度合いを測定する方法とその方法に使用するドラ
イセンサを提供することにある。It is an object of the present invention to provide a method of measuring the dryness of an object to be processed using a monitor and a dry sensor used in the method.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明による乾燥の進行度合い測定方法において
は、湿潤した被処理物が乾燥処理されてゆく環境の温度
と、前記被処理物と同一の条件で湿潤したモニタの温度
とを同時に検知し、環境温度とモニタ温度との温度差が
ゼロとなる検知出力をもって被処理物の乾燥完了情報を
得るものである。In order to achieve the above object, in the method for measuring the degree of progress of drying according to the present invention, the temperature of the environment in which a wet object to be processed is dried and the same as the object to be processed are the same. At the same time, the temperature of the monitor that has been wetted is detected, and the drying completion information of the object to be processed is obtained from the detection output in which the temperature difference between the environmental temperature and the monitor temperature becomes zero.
【０００７】また、本発明によるドライセンサにおいて
は、対の温度センサと、信号処理装置とを有するドライ
センサであって、対をなす温度センサの一方は、環境温
度検知用センサ、他方は、蒸発温度検知用センサであ
り、環境温度検知用センサは、湿潤した被処理物が乾燥
処理される環境の温度を測定して環境温度信号を出力す
るものであり、蒸発温度検知用センサは、前記被処理物
と同一条件で湿潤したモニタの温度を測定してモニタ温
度信号を出力するものであり、信号処理装置は、環境温
度信号及びモニタ温度信号を入力とし、両信号の大小を
演算し、環境の温度とモニタの温度との温度差を出力す
るものである。The dry sensor according to the present invention is a dry sensor having a pair of temperature sensors and a signal processing device, one of the pair of temperature sensors is an ambient temperature detecting sensor, and the other is an evaporation sensor. The temperature detection sensor is an environment temperature detection sensor that measures the temperature of the environment in which a wet object is dried and outputs an environment temperature signal. It measures the temperature of the monitor that is wet under the same conditions as the processed object and outputs the monitor temperature signal.The signal processing device inputs the environmental temperature signal and the monitor temperature signal, calculates the magnitude of both signals, and outputs The temperature difference between the temperature of the monitor and the temperature of the monitor is output.
【０００８】また、環境温度検知用センサ及び蒸発温度
検知用センサは鞘を有し、鞘は、温度センサを収容して
水密に封止するものであり、環境温度検知用センサの鞘
は、環境にさらされる外面が撥水性であり、蒸発温度検
知用センサの鞘は、環境にさらされる外面が吸水性であ
り、吸水性の外面は、被処理物のモニタを構成するもの
である。Further, the environmental temperature detecting sensor and the evaporation temperature detecting sensor have a sheath, and the sheath accommodates the temperature sensor and seals it in a watertight manner. The outer surface exposed to water is water-repellent, and the sheath of the evaporation temperature detecting sensor has water absorption on the outer surface exposed to the environment, and the water-absorbing outer surface constitutes a monitor of the object to be processed.
【０００９】また、蒸発温度検知用センサの鞘は、撥水
性の鞘の表面を吸水材で覆ったものである。The sheath of the evaporation temperature detecting sensor is a water-repellent sheath whose surface is covered with a water absorbing material.
【００１０】また、環境温度検知用センサ及び蒸発温度
検知用センサの鞘は、同一のステムに装着され、各鞘内
の温度センサの出力配線はステムより外部に引き出され
て信号処理装置に結線され、信号処理装置は、両温度セ
ンサと２つの抵抗器とを組合せたブリッジ回路であり、
両温度センサの出力差を出力するものである。The sheaths of the ambient temperature detecting sensor and the evaporation temperature detecting sensor are mounted on the same stem, and the output wiring of the temperature sensor in each sheath is pulled out from the stem and connected to the signal processing device. , The signal processing device is a bridge circuit combining both temperature sensors and two resistors,
The output difference of both temperature sensors is output.
【００１１】また、環境温度検知用センサ及び蒸発温度
検知用センサの温度センサは、同一の抵抗温度特性を有
するＮＴＣサーミスタである。The temperature sensors of the environmental temperature detecting sensor and the evaporation temperature detecting sensor are NTC thermistors having the same resistance temperature characteristic.
【００１２】[0012]
【作用】本発明によるドライセンサの湿度検知機能は、
基本的に乾湿球湿度計の原理に基づいている。乾湿球湿
度計は、２本のガラス温度計を用い、一方の温度計の球
部をガーゼで包み、水で湿らせてこれを湿球とし、２本
の温度計の温度差と湿球の温度とから湿度を求める方式
のものである。湿球のガーゼが乾燥しきったときには、
湿度計としての機能が失われる。The function of the dry sensor according to the present invention to detect humidity is
Basically, it is based on the principle of dry and wet bulb hygrometer. A dry-wet bulb hygrometer uses two glass thermometers, one bulb of the thermometer is wrapped in gauze, moistened with water to make it a wet bulb, and the temperature difference between the two thermometers and the wet bulb This is a method of obtaining humidity from temperature. When the wet-bulb gauze is completely dry,
The function as a hygrometer is lost.
【００１３】湿度計としての機能が失われる時点は、乾
燥完了を意味する。もっとも乾湿球湿度計をそのままで
はドライセンサに使用できない。本発明においては、乾
湿球湿度計の乾湿球に代えて温度センサを用い、乾球に
相当する温度センサをもって環境温度を測定し、湿球に
相当する温度センサをもってモニタの蒸発温度を測定
し、環境温度とモニタ温度との差の検知信号を出力する
ことによって相対湿度情報を得るものである。When the function as a hygrometer is lost, it means that the drying is completed. However, the dry-wet bulb hygrometer cannot be used as a dry sensor as it is. In the present invention, the temperature sensor is used in place of the dry and wet bulb of the dry and wet bulb hygrometer, the ambient temperature is measured by the temperature sensor corresponding to the dry bulb, and the evaporation temperature of the monitor is measured by the temperature sensor corresponding to the wet bulb, Relative humidity information is obtained by outputting a detection signal of the difference between the environmental temperature and the monitor temperature.
【００１４】温度センサには、セラミックスを使ったも
のとしては、温度による電気抵抗の変化を利用したサー
ミスタ，温度変化によって電圧が生ずる焦電体などが使
用できるが、抵抗が温度上昇にともなって減少する負の
抵抗温度特性をもつサーミスタ（ＮＴＣサーミスタ）が
好適である。一対の温度センサに同一の抵抗温度特性を
有するサーミスタを用いれば、出力値の０点調整が容易
となる。温度センサとしては、その他にも、例えば熱電
対や白金抵抗体を使用できるが、サーミスタの方が温度
係数が大きく、大出力が得られる点で有利である。As the temperature sensor, as a temperature sensor, a thermistor utilizing a change in electric resistance due to temperature, a pyroelectric body generating a voltage due to a temperature change, or the like can be used, but the resistance decreases as the temperature rises. A thermistor having a negative resistance temperature characteristic (NTC thermistor) is preferable. If the thermistors having the same resistance temperature characteristic are used for the pair of temperature sensors, the zero point adjustment of the output value becomes easy. As the temperature sensor, for example, a thermocouple or a platinum resistor can be used, but the thermistor is advantageous in that it has a large temperature coefficient and a large output can be obtained.
【００１５】温度センサは、鞘内に封止されており、直
接外気に触れることがなく、鞘の放熱又は吸熱温度が測
定される。温度センサがそれぞれ収容された吸水性及び
撥水性の鞘が被処理物の水洗中のような多湿の雰囲気の
環境中にさらされているときには、蒸発熱がないので両
温度センサの検知温度は同じとなり、出力差が生じな
い。しかし、外気が乾燥雰囲気となったときには撥水性
の鞘の表面は直ちに乾燥してその内部の温度センサは乾
燥状態となった環境の温度を検知する。吸水性の鞘は、
被処理物のモニタである。その表面は依然として水を含
んでおり、乾燥雰囲気中でその水が表面より蒸発を続
け、蒸発熱が奪われて吸水性の鞘内の温度センサは、環
境温度より低い温度を検知する。両温度センサの検出温
度の温度差は、雰囲気の相対湿度と、吸水性の鞘表面の
乾燥の進行度合いを示すことになる。The temperature sensor is sealed in the sheath so that the heat radiation or heat absorption temperature of the sheath can be measured without directly contacting the outside air. When the water-absorbing and water-repellent sheaths in which the temperature sensors are housed are exposed to the environment of a humid atmosphere such as when washing the object to be processed, since there is no heat of evaporation, the temperature detected by both temperature sensors is the same. The output difference does not occur. However, when the outside air becomes a dry atmosphere, the surface of the water-repellent sheath is immediately dried, and the temperature sensor inside the sheath detects the temperature of the environment in a dry state. The water-absorbing sheath is
It is a monitor of an object to be processed. The surface still contains water, the water continues to evaporate from the surface in a dry atmosphere, the heat of evaporation is removed, and the temperature sensor inside the water-absorbing sheath detects a temperature lower than the ambient temperature. The temperature difference between the temperatures detected by both temperature sensors indicates the relative humidity of the atmosphere and the degree of progress of drying of the water-absorbing sheath surface.
【００１６】吸水性の鞘の表面の水分の蒸発が進んで乾
燥状態となると蒸発熱がなくなり、内部の温度センサは
環境温度を検知することとなり、両温度センサの検知温
度の温度差は０となる。両温度センサの温度検出出力
は、ブリッジ回路に出力し、乾燥の進行度合いは、ブリ
ッジ回路の平衡状態又は、平衡状態からのずれによって
検出される。When the water content of the surface of the water-absorbing sheath progresses to a dry state due to evaporation, the heat of evaporation disappears, and the internal temperature sensor detects the ambient temperature, and the temperature difference between the temperature sensors is 0. Become. The temperature detection outputs of both temperature sensors are output to the bridge circuit, and the degree of progress of drying is detected by the equilibrium state of the bridge circuit or the deviation from the equilibrium state.
【００１７】吸水性及び撥水性の鞘の材質は特に限定さ
れるものではないが、できれば熱伝導率が同一で放熱性
に優れた金属材料が好ましい。同一金属材料の鞘の一方
の表面にモニタとして、毛細管現象で保水できる金網，
紙，布，ガラスウール編織物や吸湿樹脂を装着し、ある
いはコーティングを施してこれを吸水性の鞘とし、金属
面を表面に露出させたものを撥水性の鞘として使用でき
る。The material of the water-absorbing and water-repellent sheath is not particularly limited, but if possible, a metal material having the same thermal conductivity and excellent heat dissipation is preferable. As a monitor on one surface of the sheath of the same metal material, a wire mesh that can retain water by capillary action,
It is possible to use paper, cloth, glass wool knitted woven fabric or a hygroscopic resin, or apply a coating to form a water-absorbing sheath, and use a metal surface exposed on the surface as a water-repellent sheath.
【００１８】[0018]
【実施例】以下に本発明の実施例を図によって説明す
る。図１において、吸水性の鞘１と、撥水性の鞘２とを
同一のステム３に装着し、各々の鞘１，２内に温度セン
サとしてガラス封止したサーミスタ（ＮＴＣサーミス
タ）４，５を挿入し、そのリード線をステム３から外部
へ引き出す。サーミスタ４，５の特性は、いずれも抵抗
値が２５℃で３０ＫΩ，Ｂ定数は３５００Ｋである。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a water-absorbing sheath 1 and a water-repellent sheath 2 are mounted on the same stem 3, and glass-sealed thermistors (NTC thermistors) 4 and 5 as temperature sensors are installed in the respective sheaths 1 and 2. Insert and pull out the lead wire from the stem 3 to the outside. As for the characteristics of the thermistors 4 and 5, the resistance value is 30 KΩ at 25 ° C., and the B constant is 3500 K.
【００１９】実施例においては、撥水性の鞘２として
２．５ｍｍφ，長さ２５ｍｍのステンレス製パイプを用
い、吸水性の鞘１には、同じステンレス製パイプの表面
にモニタとなる吸水材６としてガラス繊維チューブを外
装した。In the embodiment, a 2.5 mmφ, 25 mm long stainless steel pipe is used as the water-repellent sheath 2, and the water-absorbing sheath 1 is the water-absorbing material 6 serving as a monitor on the surface of the same stainless steel pipe. The glass fiber tube was covered.
【００２０】撥水性の鞘２に組合された温度センサは、
環境温度検知用センサＣであり、吸水性の鞘１と組合さ
れた温度センサは、蒸発温度検知用センサＳである。両
センサＣ，Ｓの出力端は、図２に示す信号処理装置７に
接続され、ドライセンサ９を構成する。The temperature sensor combined with the water-repellent sheath 2 is
The sensor C for detecting the ambient temperature, which is combined with the water-absorbing sheath 1, is the sensor S for detecting the evaporation temperature. The output ends of both sensors C and S are connected to the signal processing device 7 shown in FIG.
【００２１】図２に両センサＣ，Ｓの信号処理装置７の
一例を示す。図は、抵抗（７．４ＫΩ）Ｒ1と環境温度
検知用センサＣとの直列回路及び抵抗（７．４ＫΩ）Ｒ
2と蒸発温度検知用センサＳとの直列回路とを直流電源
（ＤＣ５Ｖ）に並列に結線し、両直列回路の中点間に電
圧計８を接続してブリッジ回路を構成した例である。環
境温度検知用センサＣと、蒸発温度検知用センサＳとの
抵抗値が同じである限り、ブリッジ回路は平衡を保ち、
電圧計８の指示は０を示す。FIG. 2 shows an example of the signal processing device 7 for both sensors C and S. The figure shows a series circuit of a resistor (7.4 KΩ) R 1 and a sensor C for detecting the ambient temperature, and a resistor (7.4 KΩ) R
This is an example in which a series circuit of 2 and the evaporation temperature detecting sensor S is connected in parallel to a DC power source (DC5V), and a voltmeter 8 is connected between the midpoints of both series circuits to form a bridge circuit. As long as the environmental temperature detection sensor C and the evaporation temperature detection sensor S have the same resistance value, the bridge circuit maintains balance,
The voltmeter 8 indicates 0.
【００２２】蒸発温度検知用センサＳの吸水材５に水を
含ませ、これを湿度制御装置内にセットし、相対湿度を
変化させて両センサＣ，Ｓの出力差を測定した。測定
は、周囲温度が２０℃，３０℃，４０℃，５０℃，６０
℃のときの出力電圧値Ｖ（ｍＶ）を測定したものであ
る。その測定結果を図３に示す。図４は、相対湿度と乾
球，湿球温度差との関係をＳｐｒｕｎｇの公式により求
めたものである。図３と図４とを比較して図３の出力
は、乾湿球相対湿度計における相対湿度と乾球，湿球の
温度差との関係と同じパターンであり、図３に示す測定
結果は間違いなく乾湿球湿度計の特性を表わしているこ
とが分かる。The water absorbing material 5 of the evaporation temperature detecting sensor S was made to contain water, which was set in the humidity control device, and the relative humidity was changed to measure the output difference between the sensors C and S. The ambient temperature is 20 ℃, 30 ℃, 40 ℃, 50 ℃, 60
The measured output voltage value V (mV) at the temperature of ° C. The measurement result is shown in FIG. FIG. 4 is a graph showing the relationship between the relative humidity and the temperature difference between the dry bulb and the wet bulb obtained by the Sprun's formula. Comparing FIG. 3 and FIG. 4, the output of FIG. 3 has the same pattern as the relationship between the relative humidity in the dry and wet bulb relative hygrometer and the temperature difference between the dry bulb and the wet bulb, and the measurement result shown in FIG. 3 is incorrect. It can be seen that it shows the characteristics of a dry-wet bulb hygrometer.
【００２３】両温度センサＳ，Ｃの検出出力の出力差
は、相対湿度と周囲温度（環境温度）との関数として示
される。図３に示す出力値は、吸水材６が湿っている間
にその水分の蒸発熱によって示される値である。したが
って、湿度計としての機能を保つためには、吸水材６は
常に湿った状態でなければならない。The output difference between the detection outputs of both temperature sensors S and C is shown as a function of relative humidity and ambient temperature (environmental temperature). The output value shown in FIG. 3 is a value indicated by the heat of vaporization of water while the water absorbent 6 is wet. Therefore, in order to maintain the function as the hygrometer, the water absorbing material 6 must be always in a wet state.
【００２４】吸湿材が乾燥してしまうと両温度センサの
検知温度差がゼロとなり、電圧計８には出力が示されな
くなる。これは湿度計としての機能が失われることであ
るが、反面，両センサの出力差がゼロになることによっ
てモニタ、ひいては被処理物乾燥の進行度合いが完了し
たことを示すことになる。When the hygroscopic material has dried, the temperature difference detected by both temperature sensors becomes zero, and the voltmeter 8 does not show any output. This means that the function as a hygrometer is lost, but on the other hand, the output difference between the two sensors becomes zero, which means that the progress of the monitor, and thus the drying of the object to be processed, is completed.
【００２５】図５は、蒸発温度検知用センサＳの吸水材
６を水で濡らし、環境の雰囲気の相対湿度を１００％か
ら順次０％まで変化させ、両温度センサＳ，Ｃの出力差
を測定した結果を示すものである。環境の相対湿度が１
００％のときには蒸発熱がゼロであり、両センサＳ，Ｃ
間には、出力差は生じない。一方、環境の相対湿度をゼ
ロ％にすると、蒸発温度検知用センサＳの検出温度が下
がり、環境温度検知用センサＣと蒸発温度検知用センサ
Ｓとの出力値の差が大きくなり、信号処理装置７の出力
値は、周囲温度に応じた値を示す。In FIG. 5, the water absorbing material 6 of the evaporation temperature detecting sensor S is wetted with water, the relative humidity of the environment atmosphere is gradually changed from 100% to 0%, and the output difference between the temperature sensors S and C is measured. The results are shown. Relative humidity of the environment is 1
When it is 00%, the heat of evaporation is zero, and both sensors S, C
There is no output difference between them. On the other hand, when the relative humidity of the environment is set to 0%, the temperature detected by the evaporation temperature detecting sensor S decreases, and the difference between the output values of the environmental temperature detecting sensor C and the evaporation temperature detecting sensor S increases, and the signal processing device The output value of 7 indicates a value according to the ambient temperature.
【００２６】環境の相対湿度０％において、吸水材６の
乾燥が進むに従って、その蒸発熱が小さくなり、電圧計
８の出力が次第に減少し、一定時間経過後、吸水材６が
乾燥しきったときに出力はゼロになる。図５にはその様
子を環境温度４０℃，５０℃，６０℃について示してい
る。At a relative humidity of 0%, as the water absorbing material 6 dries, the heat of vaporization becomes smaller, the output of the voltmeter 8 gradually decreases, and when the water absorbing material 6 is completely dried after a certain period of time. The output will be zero. FIG. 5 shows the situation at ambient temperatures of 40 ° C., 50 ° C. and 60 ° C.
【００２７】図６に本発明のドライセンサ９を食器の洗
浄乾燥機１０に適用した例を示す。蒸発温度検知用セン
サＳは、被処理物である食器１１の乾燥進行の度合いを
示すモニタとなる。スプリンクラ１２から噴出した洗浄
水が機内の食器１１に噴付けられ、同時に両センサＣ，
Ｓは洗浄水を浴びて濡らされる。洗浄が完了し、乾燥空
気が噴出されると、環境温度検知用センサＣの表面は直
ちに乾燥して環境温度を検知するが、蒸発温度検知用セ
ンサＳの表面は、食器１１の表面と同様に濡れたままで
あるため、乾燥空気の噴付けによって表面の水分が蒸発
し、蒸発温度検知用センサＳは、蒸発熱の放散による低
温を検知する。このため、両センサＣ，Ｓの検知温度に
差が生じ、両センサＣ，Ｓの検知温度の差の信号から食
器乾燥進行の程度が示される。両センサの検知温度に温
度差がなくなったときには乾燥処理を停止させる。FIG. 6 shows an example in which the dry sensor 9 of the present invention is applied to a dishwasher / dryer 10. The evaporation temperature detecting sensor S serves as a monitor showing the degree of progress of drying of the tableware 11, which is the object to be processed. The washing water spouted from the sprinkler 12 is sprayed on the tableware 11 in the machine, and at the same time, both sensors C,
S is soaked in the wash water. When the cleaning is completed and the dry air is ejected, the surface of the environmental temperature detecting sensor C is immediately dried to detect the environmental temperature, but the surface of the evaporation temperature detecting sensor S is similar to the surface of the tableware 11. Since it remains wet, the moisture on the surface is evaporated by the spray of dry air, and the evaporation temperature detecting sensor S detects a low temperature due to the dissipation of evaporation heat. Therefore, a difference occurs between the temperatures detected by the sensors C and S, and the signal indicating the difference between the temperatures detected by the sensors C and S indicates the degree of progress of the tableware drying. When there is no temperature difference between the temperatures detected by both sensors, the drying process is stopped.
【００２８】なお、洗浄乾燥機１０内にドライセンサ９
を設置するに際しては、ステム３上に両温度センサＳ，
Ｃを支えた姿勢で垂直又は傾斜状に設置する。両温度セ
ンサＳ，Ｃをステム３から吊下げた姿勢で下向きに設置
したときにはステム３から蒸発温度検知用センサＳ又は
環境温度検知用センサＣに水滴の雫が垂れて乾燥完了情
報の検知に誤りが生ずる虞れがある。もっともドライセ
ンサ９が正規の姿勢に設置されていても、食器１１や食
器を収容する籠１３から水滴の雫が温度センサＳ，Ｃに
落下しないような個所を選定してドライセンサを設置す
るのが望ましい。A dry sensor 9 is installed in the washing / drying machine 10.
When installing the two temperature sensors S,
Install it vertically or inclined with C being supported. When both temperature sensors S and C are installed downward with the stem 3 suspended from the stem 3, a drop of water drops drips from the stem 3 onto the evaporation temperature detection sensor S or the environmental temperature detection sensor C, and the detection of the drying completion information is erroneous. May occur. However, even if the dry sensor 9 is installed in the proper posture, the dry sensor is installed by selecting a place where the drop of water drop does not drop from the tableware 11 or the basket 13 containing the tableware to the temperature sensors S and C. Is desirable.
【００２９】以上、実施例においては、温度センサにＮ
ＴＣサーミスタを用いた例を説明したが、温度センサに
熱電対や白金抵抗体を用いたときには、環境温度検知用
センサＣと、蒸発温度検知用センサＳとを電源回路に直
接結線して両センサの温度差に対応した出力を取り出す
ことができる。As described above, in the embodiment, the temperature sensor has N
Although the example using the TC thermistor has been described, when a thermocouple or a platinum resistor is used as the temperature sensor, both the ambient temperature detecting sensor C and the evaporation temperature detecting sensor S are directly connected to the power supply circuit and both sensors are used. The output corresponding to the temperature difference can be taken out.
【００３０】[0030]
【発明の効果】以上のように本発明によるときには、環
境温度検知用センサと、蒸発温度検知用センサとの検知
温度の出力差を検知することによって、乾燥すべき被処
理物の乾燥進行情報を得ることができ、また、両センサ
の出力差がゼロとなった時点を検知して被処理物の乾燥
の仕上り時機を知ることができる。特に本発明によれ
ば、対の温度センサを鞘内に収めて乾燥機の機内に設置
するものであるために、食器類の洗浄乾燥機のように被
処理物の乾燥処理に先立って、機内に洗浄のための水が
噴射されるような環境であっても、湿度や乾燥度合いの
測定に支障を来すことがなく、機内の被処理物と同一条
件の下で濡らされた洗浄水の乾燥の程度を検知できる。As described above, according to the present invention, by detecting the output difference of the detected temperature between the sensor for detecting the ambient temperature and the sensor for detecting the evaporation temperature, it is possible to obtain the drying progress information of the object to be dried. Further, it is possible to detect the time when the difference between the outputs of both sensors becomes zero, and to know the finish time of drying of the object to be processed. In particular, according to the present invention, since the pair of temperature sensors are housed in the sheath and installed in the dryer, the interior of the dryer is dried prior to the drying process of the object to be treated like a dishwasher. Even in an environment where water for cleaning is sprayed onto the machine, it does not interfere with the measurement of humidity and dryness, and the cleaning water is wet under the same conditions as the in-machine object. The degree of dryness can be detected.
【００３１】本発明には、温度センサとしてＮＴＣサー
ミスタ，焦電体，熱電対，白金抵抗体などを使用できる
が、ＮＴＣサーミスタは、温度変化に対する出力電圧が
大きいために信号処理に簡単なブリッジ回路を用いて被
処理物の乾燥程度を容易に検知できる。In the present invention, an NTC thermistor, a pyroelectric body, a thermocouple, a platinum resistor or the like can be used as a temperature sensor. However, the NTC thermistor has a large output voltage with respect to a temperature change, so that the bridge circuit is simple for signal processing. Can be used to easily detect the degree of drying of the object to be treated.
【００３２】本発明によれば、乾燥空気の送風量が一定
の場合に、乾燥処理される被処理物の量に応じて乾燥処
理時間が自動的に決定されることになり、乾燥処理時間
をタイマーで設定する場合のように被処理物の過剰な乾
燥や乾燥不足が生ぜず、常に適正に乾燥処理を行うこと
ができ、乾燥処理のための電力の無駄が生じない。According to the present invention, when the air flow rate of the dry air is constant, the drying processing time is automatically determined according to the amount of the object to be dried, and the drying processing time is Excessive drying and insufficient drying of the object to be processed as in the case of setting with a timer does not occur, the drying process can always be properly performed, and power is not consumed for the drying process.
【００３３】本発明は、洗浄後の食器類の乾燥度合いの
測定に限らず、湿潤した蒸発温度検知用センサの乾燥速
度を乾燥すべき被処理物の乾燥速度に合致させることに
よって、被処理物の乾燥進行の度合いをモニタしつつ広
く一般の乾燥処理物の乾燥処理を行うことができる効果
を有する。The present invention is not limited to the measurement of the degree of dryness of tableware after washing, but by matching the drying rate of the sensor for detecting the evaporation temperature which has been wet with the drying rate of the object to be treated, the object to be treated can be dried. This has the effect of being able to perform a wide range of general dry processing of the dried product while monitoring the degree of progress of drying.
【図１】本発明のドライセンサの一実施例を示す図であ
る。FIG. 1 is a diagram showing an embodiment of a dry sensor of the present invention.
【図２】センサ出力の測定回路の一例を示す図である。FIG. 2 is a diagram showing an example of a sensor output measurement circuit.
【図３】相対湿度と検出出力との関係を示す図である。FIG. 3 is a diagram showing a relationship between relative humidity and detection output.
【図４】相対湿度と乾湿球温度差との関係を示す図であ
る。FIG. 4 is a diagram showing a relationship between relative humidity and a wet-dry bulb temperature difference.
【図５】検出出力の時間的変化を示す図である。FIG. 5 is a diagram showing a temporal change of a detection output.
【図６】本発明のドライセンサを設置した食器の洗浄乾
燥機の断面図である。FIG. 6 is a sectional view of a dishwasher / dryer in which the dry sensor of the present invention is installed.
【符号の説明】 １ 吸水性の鞘 ２ 撥水性の鞘 ３ ステム ４，５ サーミスタ ６ 吸水材 ７ 信号処理装置 ８ 電圧計 ９ ドライセンサ １０ 洗浄乾燥機 １１ 食器 １２ スプリンクラ １３ 籠 Ｃ 環境温度検知用センサ Ｓ 蒸発温度検知用センサ Ｒ1，Ｒ2 抵抗[Explanation of Codes] 1 Water-absorbing sheath 2 Water-repellent sheath 3 Stem 4,5 Stem thermistor 6 Water absorbing material 7 Signal processing device 8 Voltmeter 9 Dry sensor 10 Washing / drying machine 11 Tableware 12 Sprinkler 13 Basket C Environmental temperature sensor S Evaporation temperature detection sensor R 1 , R 2 resistance
Claims (6)
環境の温度と、前記被処理物と同一の条件で湿潤したモ
ニタの温度とを同時に検知し、環境温度とモニタ温度と
の温度差がゼロとなる検知出力をもって被処理物の乾燥
完了情報を得ることを特徴とする乾燥の進行度合い測定
方法。1. The temperature difference between the environmental temperature and the monitor temperature is detected by simultaneously detecting the temperature of the environment where the wet object to be processed is dried and the temperature of the monitor which is wet under the same conditions as the object to be processed. A method for measuring the degree of progress of drying, characterized in that the completion information of drying of the object to be processed is obtained with a detection output indicating that the value becomes zero.
するドライセンサであって、 対をなす温度センサの一方は、環境温度検知用センサ、
他方は、蒸発温度検知用センサであり、 環境温度検知用センサは、湿潤した被処理物が乾燥処理
される環境の温度を測定して環境温度信号を出力するも
のであり、 蒸発温度検知用センサは、前記被処理物と同一条件で湿
潤したモニタの温度を測定してモニタ温度信号を出力す
るものであり、 信号処理装置は、環境温度信号及びモニタ温度信号を入
力とし、両信号の大小を演算し、環境の温度とモニタの
温度との温度差を出力するものであることを特徴とする
ドライセンサ。2. A dry sensor having a pair of temperature sensors and a signal processing device, wherein one of the pair of temperature sensors is an environmental temperature detecting sensor,
The other is an evaporation temperature detection sensor.The environmental temperature detection sensor measures the temperature of the environment in which a wet object is dried and outputs an environmental temperature signal. Is a device for measuring the temperature of a monitor that has been wetted under the same conditions as the object to be processed and outputting a monitor temperature signal.The signal processing device receives the environmental temperature signal and the monitor temperature signal as input and determines the magnitude of both signals. A dry sensor, which calculates and outputs the temperature difference between the environment temperature and the monitor temperature.
用センサは鞘を有し、 鞘は、温度センサを収容して水密に封止するものであ
り、 環境温度検知用センサの鞘は、環境にさらされる外面が
撥水性であり、 蒸発温度検知用センサの鞘は、環境にさらされる外面が
吸水性であり、吸水性の外面は、被処理物のモニタを構
成するものであることを特徴とする請求項２に記載のド
ライセンサ。3. The environmental temperature detecting sensor and the evaporation temperature detecting sensor have a sheath, and the sheath accommodates the temperature sensor and seals in a watertight manner, and the sheath of the environmental temperature detecting sensor is the environment. The outer surface that is exposed to water is water repellent, and the sheath of the evaporation temperature detection sensor is that the outer surface that is exposed to the environment is water absorbent, and the water absorbent outer surface constitutes the monitor of the object to be processed. The dry sensor according to claim 2.
鞘の表面を吸水材で覆ったものであることを特徴とする
請求項３に記載のドライセンサ。4. The dry sensor according to claim 3, wherein the sheath of the evaporation temperature detecting sensor is a water-repellent sheath whose surface is covered with a water absorbing material.
用センサの鞘は、同一のステムに装着され、各鞘内の温
度センサの出力配線はステムより外部に引き出されて信
号処理装置に結線され、 信号処理装置は、両温度センサと２つの抵抗器とを組合
せたブリッジ回路であり、両温度センサの出力差を出力
するものであることを特徴とする請求項３又は４に記載
のドライセンサ。5. The sheaths of the environmental temperature detecting sensor and the evaporation temperature detecting sensor are mounted on the same stem, and the output wiring of the temperature sensor in each sheath is pulled out from the stem and connected to the signal processing device. The dry sensor according to claim 3 or 4, wherein the signal processing device is a bridge circuit in which both temperature sensors and two resistors are combined, and which outputs an output difference between both temperature sensors. .
用センサの温度センサは、同一の抵抗温度特性を有する
ＮＴＣサーミスタであることを特徴とする請求項２，
３，４又は５に記載のドライセンサ。6. The temperature sensor of the ambient temperature detecting sensor and the evaporation temperature detecting sensor are NTC thermistors having the same resistance temperature characteristic.
The dry sensor according to 3, 4, or 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01005595A JP3668951B2 (en) | 1995-01-25 | 1995-01-25 | Dry sensor for washing dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01005595A JP3668951B2 (en) | 1995-01-25 | 1995-01-25 | Dry sensor for washing dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08201321A true JPH08201321A (en) | 1996-08-09 |
| JP3668951B2 JP3668951B2 (en) | 2005-07-06 |
Family
ID=11739713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01005595A Expired - Lifetime JP3668951B2 (en) | 1995-01-25 | 1995-01-25 | Dry sensor for washing dryer |
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| Country | Link |
|---|---|
| JP (1) | JP3668951B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014178286A (en) * | 2013-03-15 | 2014-09-25 | Miyagawa Kasei Ind Co Ltd | Water vapor amount-measuring device, and water vapor amount-measuring method |
-
1995
- 1995-01-25 JP JP01005595A patent/JP3668951B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014178286A (en) * | 2013-03-15 | 2014-09-25 | Miyagawa Kasei Ind Co Ltd | Water vapor amount-measuring device, and water vapor amount-measuring method |
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| Publication number | Publication date |
|---|---|
| JP3668951B2 (en) | 2005-07-06 |
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