JPS5819606Y2 - Ondoseigiyosouchi - Google Patents

Description

【考案の詳細な説明】 この考案は温度制御装置に関する。[Detailed explanation of the idea] This invention relates to a temperature control device.

たとえばフィルムの現像装置の現像液や定着液を基準温
度となるように加熱制御する場合、従来は基準温度１で
大容量のヒータで現像液（或いは現像液を間接的に加熱
する場合は加熱用の液）を加熱し、その後は単にそのヒ
ータをオン、オフしていた。For example, when controlling the heating of the developer and fixer in a film developing device to a reference temperature, conventionally, at the reference temperature 1, a large capacity heater is used to heat the developer (or if the developer is heated indirectly, the heating liquid) and then simply turned the heater on and off.

このような従来の制御方法では、被加熱液が基準温度と
なって大容量ヒータをオフとしてもヒータ内に蓄積され
た熱により液が基準温度より上昇しすぎる一方、ヒータ
容置が大きいほど基準温度の上下の液温の振幅が大きく
なる欠点があった。In such conventional control methods, even if the heated liquid reaches the standard temperature and the large-capacity heater is turned off, the liquid rises too much above the standard temperature due to the heat accumulated in the heater. There was a drawback that the amplitude of the liquid temperature was large.

この考案は上述の欠点な排除するためになされたもので
、大小２個の容置のヒータと被加熱体の温度制御器の設
定温度を加熱途中で切換える手段を設け、加熱時は大容
量ヒータを用い、基準温度の保持には小容量ヒータを用
いることにより、比較的安師な装置で、かつ高精度に温
度制御を行なえる温度制御装置を提供することを目的と
する。This idea was made in order to eliminate the above-mentioned drawbacks, and a means was provided to switch the set temperatures of the heaters for two large and small containers and the temperature controller for the heated object during heating, and the large capacity heater was used during heating. It is an object of the present invention to provide a temperature control device that is relatively simple and can perform temperature control with high precision by using a small-capacity heater to maintain a reference temperature.

以下にこの考案の一実施例を図面とともに説明する。An embodiment of this invention will be described below with reference to the drawings.

第１図において、１は５００Ｗのヒータ、２ばｉ ｏ
ｏｗのヒータで両ヒータ１，２は、たとえば第２図に示
すようにフィルムＦの現像装置３の加熱液４を加熱する
ように下側液槽５ａ内に設けられる。In Figure 1, 1 is a 500W heater, 2 is a 500W heater,
Both heaters 1 and 2 are provided in the lower liquid tank 5a so as to heat the heating liquid 4 of the developing device 3 for the film F, as shown in FIG. 2, for example.

再び第１図に訃いて、６は温度調節器、７は温度設定抵
抗器、８は下側液槽５ａの液温を検出するサーミスタで
ある。Returning to FIG. 1 again, 6 is a temperature regulator, 7 is a temperature setting resistor, and 8 is a thermistor for detecting the liquid temperature in the lower liquid tank 5a.

温度調節器６は温度設定抵抗器７で設定された温度設定
値とサーミスタ８との抵抗値の相互関係に応じて接点６
−１を開閉する。The temperature regulator 6 is connected to the contact 6 according to the correlation between the temperature setting value set by the temperature setting resistor 7 and the resistance value of the thermistor 8.
-1 opens and closes.

９．１０，１１ばそれぞれリレー、９−１゜９−２．１
０−１ 、１０−２．１１−１ 、１１−２はそれぞれ
リレー９，１０，１１０各接点で、図中ａは常開接点、
ｂは常閉接点を示す。9.10 and 11 relays, 9-1゜9-2.1
0-1, 10-2, 11-1 and 11-2 are the contacts of relays 9, 10, and 110, respectively, and a in the figure is a normally open contact.
b indicates a normally closed contact.

上記した温度設定抵抗器７からは高温（たとえば３０℃
）設定端子７ａと低温（たとえば２８℃）設定端子７ｂ
とが導出されてかり、低温設定端子γｂはリレー９の常
閉接点を介して、また高温設定端子７ａはリレー９の常
開接点を介してそれぞれ、温度調節器６の設定信号入力
端子に接続されていて、リレー９のオン、オフにより、
設定温度が変種される。The above-mentioned temperature setting resistor 7 is connected to a high temperature (for example, 30°C).
) setting terminal 7a and low temperature (for example, 28°C) setting terminal 7b
The low temperature setting terminal γb is connected to the setting signal input terminal of the temperature controller 6 through the normally closed contact of the relay 9, and the high temperature setting terminal 7a is connected to the setting signal input terminal of the temperature controller 6 through the normally open contact of the relay 9. and by turning on and off relay 9,
The set temperature is varied.

リレー９はダイオード１３、抵抗１４、コンデンサ１５
で構成される遅延回路１６と接続され、遅延回路１６は
リレー１０の接点１０−２を介して電源と接続される。The relay 9 has a diode 13, a resistor 14, and a capacitor 15.
The delay circuit 16 is connected to a power source via a contact 10-2 of the relay 10.

リレー１０は温度調節器６のオフ側接点で、サーミスタ
８で検出される温度が設定温度より高くなったときオン
とされる接点６−１ｂに接続されている。The relay 10 is an off-side contact of the temperature regulator 6, and is connected to a contact 6-1b that is turned on when the temperature detected by the thermistor 8 becomes higher than the set temperature.

遅延回路１６の遅延時間ｔ１は温度調節器６に電源を投
入したとき接点６−１がｂからａに切換る時間ｔ２より
も長くしている。The delay time t1 of the delay circuit 16 is set longer than the time t2 during which the contact 6-1 switches from b to a when the temperature controller 6 is powered on.

５００Ｗのヒータ１はリレー１０の常閉接点１０−１を
介して、また１００Ｗのヒータ２は温度調節器６の常開
接点６−１ａを介してそれぞれ電源に接続される。The 500 W heater 1 is connected to the power source via the normally closed contact 10-1 of the relay 10, and the 100 W heater 2 is connected to the power source via the normally open contact 6-1a of the temperature regulator 6.

リレー１１はダイオード１７．抵抗１８．コンデンサ１
９で構成される遅延回路２０と接続され、遅延回路２０
はリレー９の接点９−２を介して電源と接続される。The relay 11 is a diode 17. Resistance 18. capacitor 1
9, the delay circuit 20 is connected to the delay circuit 20 composed of
is connected to the power supply via contact 9-2 of relay 9.

ダイオード１７はリレー１１の常開接点１ｌ−１ａを介
して温度調節器６の常開接点６−１ａとも接続され、こ
の接点１ｌ−１ａにより、リレー１１は、自己保持され
るようになっている。The diode 17 is also connected to the normally open contact 6-1a of the temperature regulator 6 via the normally open contact 1l-1a of the relay 11, and the relay 11 is self-maintained by this contact 1l-1a. .

遅延回路２０の遅延時間ｔ３は、温度設定抵抗器７の設
定が低温側７ｂから高温側γａに切換わったとき接点６
−１がａ側に切換わる時間ｔ４よりも少し長くなるよう
に定めている。The delay time t3 of the delay circuit 20 is determined by the contact 6 when the setting of the temperature setting resistor 7 is switched from the low temperature side 7b to the high temperature side γa.
-1 is set to be slightly longer than the time t4 when switching to the a side.

２１は第２図の下側液槽５ａの液を上側液槽５ｂに送給
するポンプ、２２は加熱準備中の表示灯で、Ｍはフィル
ムＦ駆動モーターを含む回路である。21 is a pump that feeds the liquid from the lower liquid tank 5a in FIG. 2 to the upper liquid tank 5b, 22 is an indicator lamp indicating that heating is being prepared, and M is a circuit including a film F drive motor.

い捷、下側液槽５ａの液が温度設定器Ｔの低温側７ｂの
設定値より低温の場合に釦いて、電源を投入すると、時
間ｔ２ののち、接点６−１はａ側に切換わる。When the liquid in the lower liquid tank 5a is lower than the set value on the low temperature side 7b of the temperature setting device T, press the button to turn on the power, and after time t2, the contact 6-1 switches to the a side. .

この時間ｔ２の間、リレー１０はオンとされるが遅延回
路１６の遅延時間により、リレー９はオンとされない。During this time t2, relay 10 is turned on, but relay 9 is not turned on due to the delay time of delay circuit 16.

上記の接点６−１の切換わりにより、ヒータ２に通電さ
れ、またリレー１０はオフとされ、ヒータ１に通電され
、下側液槽５ａの液は両ヒータ１，２により６００Ｗで
加熱される。By switching the contact 6-1, the heater 2 is energized, the relay 10 is turned off, the heater 1 is energized, and the liquid in the lower liquid tank 5a is heated by both heaters 1 and 2 at 600W. .

一方、接点９−１はｂ側にあり、温度調節器６は低温側
設定値で動作する。On the other hand, the contact 9-1 is on the b side, and the temperature regulator 6 operates at the low temperature side set value.

接点９−２ｂにより、リレー１１がオンとされ、接点１
１−２がａ側に切換わり、加熱準備中のランプ２１が点
灯される。Relay 11 is turned on by contact 9-2b, and contact 1
1-2 is switched to the a side, and the lamp 21 in preparation for heating is turned on.

液の温度が低温側設定温度（２８℃）に達すると温度調
節器６の接点６−１はｂ側に切換わり、リレー１０がオ
ンとされ、５００Ｗのヒータ１の通電は停止される。When the temperature of the liquid reaches the low-temperature set temperature (28°C), the contact 6-1 of the temperature regulator 6 is switched to the b side, the relay 10 is turned on, and the 500W heater 1 is de-energized.

リレー１０の接点１０−２がオンとされ、遅延回路１６
の遅延時間ｔ１ののち、リレー９がオンとされ、接点９
−２はａ側に切換えられ、リレー９．１０は相互に保持
される。Contact 10-2 of relay 10 is turned on, delay circuit 16
After delay time t1, relay 9 is turned on and contact 9
-2 is switched to the a side and relays 9.10 are held together.

一方リレー９のオンにより、接点９−２がａ側に切換わ
るがコンデンサ１８の電荷により、リレー１１は依然保
持状態にあり、接点１１−１もオンとされている。On the other hand, when the relay 9 is turned on, the contact 9-2 is switched to the a side, but due to the charge in the capacitor 18, the relay 11 is still held, and the contact 11-1 is also turned on.

接点９−１がａ側に切換えられ、温度調節器６の設定値
は高温側（３０℃）とされ、上記リレー９の保持により
以後この状態を保つ。The contact 9-1 is switched to the a side, and the set value of the temperature regulator 6 is set to the high temperature side (30° C.), and this state is maintained thereafter by holding the relay 9.

この切換え時の液温は高温側設定値より低いのでｔ４時
間後に接点６−１は再びａ側に切換わる。Since the liquid temperature at the time of this switching is lower than the set value on the high temperature side, the contact 6-1 is switched to the a side again after t4 hours.

この時間よりも長い遅延回路２０の遅延時間ｔ３の間上
述のようにリレー接点１１−１はオン状態を続けていた
ので接点６−１ａからリレー１１へ通電を行なう。During the delay time t3 of the delay circuit 20, which is longer than this time, the relay contact 11-1 continues to be in the on state as described above, so that the relay 11 is energized from the contact 6-1a.

接点６−１がａ側に切換わることにより１００Ｗのヒー
タ１に通電され、下側液槽５ａの液は小容ｔヒータで加
熱される。When the contact 6-1 is switched to the a side, the 100 W heater 1 is energized, and the liquid in the lower liquid tank 5a is heated by the small-capacity T heater.

この加熱により、液温か高温設定値（３０℃）に達する
と、温度調節器６の接点６−１はｂ側に切換わり、ヒー
タ２への通電は停止される。As a result of this heating, when the liquid temperature reaches the high temperature set value (30° C.), the contact 6-1 of the temperature regulator 6 is switched to the b side, and the power supply to the heater 2 is stopped.

昔たリレー１１は遅延時間ｔ３の後オフとされ、接点１
１−１．１１−２はｂ側になり、ランプ２２は消灯し、
フィルム駆動、乾燥等の回路Ｍが作動呵の状態になる。The old relay 11 is turned off after the delay time t3, and the contact 1
1-1.11-2 is on the b side, the lamp 22 is turned off,
The circuit M for driving the film, drying, etc. becomes operational.

ヒータ２の加熱が停止することにより、成る時間後液温
が自然降下すると、接点６−１は再びａ側に切換わり、
ヒータ２は再び加熱される。When the heater 2 stops heating and the liquid temperature naturally falls after a certain period of time, the contact 6-1 switches to the a side again.
The heater 2 is heated again.

しかし、リレー１１は接点１１−１がｂ側であるため接
点６−１のオン、オフに関係なく以後オフを保つ。However, since the contact 11-1 of the relay 11 is on the b side, the relay 11 remains off regardless of whether the contact 6-1 is on or off.

以下同様にヒータ２がオン、オフされ、下側液槽５ａの
液温は基準温度に保持される。Thereafter, the heater 2 is turned on and off in the same manner, and the liquid temperature in the lower liquid tank 5a is maintained at the reference temperature.

なお、この間常時ポンプ２１が働きノズル孔２３を介し
て上側液槽５ｂに供給しこの液槽の液量が一定量を越え
ると、不要分はオーバーフロー口（図示せず）から溢流
して下側液槽５ａにもどされる。During this time, the pump 21 is constantly working to supply liquid to the upper liquid tank 5b through the nozzle hole 23, and when the amount of liquid in this liquid tank exceeds a certain amount, the unnecessary amount overflows from the overflow port (not shown) and flows to the lower side. It is returned to the liquid tank 5a.

このようにして液は循環運動を行ないながら加熱を行な
うとともに、上側液槽５ｂ内の現像槽２３の現像液２４
、定着槽２５の定着液２６を循環液の熱により同時に加
熱される。In this way, the liquid is heated while being circulated, and the developer 24 in the developer tank 23 in the upper liquid tank 5b is heated.
At the same time, the fixing liquid 26 in the fixing tank 25 is heated by the heat of the circulating liquid.

また、第１図の実施例でリレー９，１０と遅延回路１６
は、高、低２つの温度設定を可能にする働きを行ない、
リレー１１と遅延回路１９は基準温度に達しないときに
、現像作業が働くことを防止する安全回路としての働き
をする。Furthermore, in the embodiment of FIG. 1, the relays 9 and 10 and the delay circuit 16
functions to enable two temperature settings, high and low.
The relay 11 and the delay circuit 19 function as a safety circuit that prevents the developing operation from working when the reference temperature is not reached.

なお、第１図の実施例では温度設定抵抗器７は無段の可
変抵抗器を用いて設定しているが、第３図のように抵抗
器７に多段のタップを設け、ロータリースイッチ３０，
３１により、有段切換により１℃おきに設定するように
しても所定の目標温度に高精度で設定できた。In the embodiment shown in FIG. 1, the temperature setting resistor 7 is set using a stepless variable resistor, but as shown in FIG.
31, it was possible to set a predetermined target temperature with high precision even if the temperature was set every 1° C. using stepped switching.

以上詳述したように、この考案は被加熱体を加熱するヒ
ータの容量を大小２種に設け、かつ温度調節器の設定値
を基準値より低いものと基準値とに切換えできるように
して、加熱時には設定値を低温度側に設定し、大容量ヒ
ータで加熱するとともに温度が基準値に近くなると、設
定値を基準温度側に切換え、かつ小容量ヒータで加熱し
、かつ定温度となるよう温度制御するから基準温度近傍
で動作するヒータの蓄積熱が小さいことから温度調節器
動作のタイムラグの影響が小となり、被加熱体が所定温
度に達した近傍での温度振幅が小さく、高精度で温度制
御が行なえるとともに、温度設定点が２つあっても１つ
の温度調節器を用いることができるので、コストが安両
となる。As detailed above, this invention provides two types of capacity for the heater that heats the heated object, large and small, and also allows the set value of the temperature controller to be switched between a value lower than the reference value and a value lower than the reference value. When heating, set the set value to the low temperature side, heat with a large capacity heater, and when the temperature approaches the reference value, switch the set value to the reference temperature side, heat with the small capacity heater, and maintain a constant temperature. Since the temperature is controlled, the accumulated heat of the heater that operates near the reference temperature is small, so the influence of the time lag of temperature controller operation is small, and the temperature amplitude is small near the point where the heated object reaches the specified temperature, making it possible to achieve high accuracy. Temperature control can be performed, and even if there are two temperature set points, one temperature regulator can be used, so costs are reduced.

また、大容量ヒータのオン、オフは、加熱時に１回で、
例えば１日に１回スイッチをオン、オフすればよく、液
温を基準温度に保持する場合は小容量ヒータ用のスイッ
チのみくり返しオン、オフ動作するので、接点寿命が長
く保てる利点がある。In addition, the large capacity heater can be turned on and off only once during heating.
For example, it is only necessary to turn the switch on and off once a day, and when the liquid temperature is maintained at the reference temperature, only the switch for the small capacity heater is turned on and off repeatedly, which has the advantage that the contact life can be maintained for a long time.

伺２個の温度制御器を用いて各別にセットする場合には
操作ミスにより片一方の調節器の温度設定のみしかしな
い場合等、使用上、構成上程々の問題があるが本考案の
如く１つの温度調節器の設定値を切換えて使用すること
により、上述のような不具合は起らず制御装置全体とし
ての使用が容易になる。When using two temperature controllers and setting each one separately, there are some problems in usage and configuration, such as when only one temperature controller is set due to an operational error. By switching and using the set values of the two temperature controllers, the above-mentioned problems do not occur and the control device as a whole becomes easier to use.

【図面の簡単な説明】[Brief explanation of drawings]

第１図はこの考案の一実施例を示す回路図、第２図はこ
の考案が適用されるフィルム現像装置を示す図、第３図
は温度設定抵抗器の他の実施例を示す回路図である。 １・・・ヒータ（大容量）、２・・・ヒータ（小容量）
、６・・・温度調節器、Ｔ・・・温度設定抵抗器、８・
・・サーミスタ、９，１０，１１・・・リレー。Figure 1 is a circuit diagram showing one embodiment of this invention, Figure 2 is a diagram showing a film developing device to which this invention is applied, and Figure 3 is a circuit diagram showing another embodiment of the temperature setting resistor. be. 1... Heater (large capacity), 2... Heater (small capacity)
, 6... Temperature regulator, T... Temperature setting resistor, 8...
...Thermistor, 9, 10, 11... Relay.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] サーミスタ式温度調節器の温度設定抵抗器に高温と低温
の２段の設定点を設けて各設定点をリレー９の接点を介
して温度調節器に接続し、かつ大容量ヒータと小容量ヒ
ータとを設け、さらに制御対象の温度が低温以下では大
容量ヒータと小容量ヒータとに通電する回路を設けると
ともに、制御対象の温度が低温を越えると温度調節器の
接点を介して励磁されるリレー１０により大容量ヒータ
の通電を遮断し、かつリレー９を励磁してリレー９の励
磁によりリレー９の接点を低温設定点から高温設定点に
切り換えるようにする一方、上記リレー９，１０をそれ
ぞれ保持回路により励磁状態を保持させるとともに、リ
レー１０に温度調節器の常開接点を接続し、リレー１０
の励磁状態を保持して温度調節器の接点が開閉しても大
容量ヒータは遮断状態を続けるとともに制御対象が高温
設定点となるか否かにしたがって小容量ヒータが温度調
節器の接点の開閉で通電あるいは遮断されるようにした
ことを特徴とする温度制御装置。The temperature setting resistor of the thermistor type temperature controller is provided with two set points for high temperature and low temperature, each set point is connected to the temperature controller via the contact of relay 9, and a large capacity heater and a small capacity heater are connected. In addition, a relay 10 is provided which energizes the large capacity heater and the small capacity heater when the temperature of the controlled object is below a low temperature, and is energized via the contact of the temperature controller when the temperature of the controlled object exceeds the low temperature. energization of the large-capacity heater is interrupted, and the relay 9 is energized so that the contacts of the relay 9 are switched from the low-temperature set point to the high-temperature set point. At the same time, the normally open contact of the temperature controller is connected to the relay 10, and the relay 10
Even if the energized state is maintained and the contacts of the temperature controller open and close, the large-capacity heater continues to be cut off, and the small-capacity heater opens and closes the contacts of the temperature regulator depending on whether the controlled object reaches the high temperature set point. A temperature control device characterized in that the current is turned on or off at a temperature.