JPH0221005B2 - - Google Patents
Info
- Publication number
- JPH0221005B2 JPH0221005B2 JP56152209A JP15220981A JPH0221005B2 JP H0221005 B2 JPH0221005 B2 JP H0221005B2 JP 56152209 A JP56152209 A JP 56152209A JP 15220981 A JP15220981 A JP 15220981A JP H0221005 B2 JPH0221005 B2 JP H0221005B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- radiator
- heat
- peltier element
- heater
- 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 - Lifetime
Links
- 238000001816 cooling Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Temperature (AREA)
Description
【発明の詳細な説明】
本発明は、ペルチエ素子を利用した温度制御器
に係り、特に、空気恒温槽を周囲より高温に温度
制御するのに好適な放熱器の構成に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a temperature controller using a Peltier element, and more particularly to a configuration of a radiator suitable for controlling the temperature of an air constant temperature bath to a higher temperature than the surroundings.
ペルチエ素子は、一方から他方へ熱を強制的に
移動させる機能をもつた素子である。そして、熱
の移動方向は、素子に流す電流の方向で決まる。
例えば、第１図ａの矢印３のように電源２からペ
ルチエ素子１に電流を流せば、熱は矢印４のよう
に下から上へ、ｂのように電流を流せば、熱は上
から下へ流れる。したがつて、流す電流の向きに
より、加熱用としても冷却用としても利用でき
る。 A Peltier element is an element that has the function of forcibly transferring heat from one side to another. The direction of heat transfer is determined by the direction of current flowing through the element.
For example, if a current is passed from the power source 2 to the Peltier element 1 as shown by arrow 3 in Figure 1 a, heat will flow from the bottom to the top as shown by arrow 4, and if a current is caused to flow as shown by arrow b, the heat will flow from top to bottom. flows to Therefore, depending on the direction of the current, it can be used for heating or cooling.
このペルチエ素子を用いて温度制御した空気恒
温槽で、周囲温度より高温に制御する場合の従来
法を第２図に示す。動作は、まず、ペルチエ素子
１に熱が下から上へ流れるように電流を流す。こ
うすると、放熱器８の熱が放熱器７へ流れ、放熱
器７はどんどん加熱される。フアン５によつて空
気を放熱器７に当てながら循環させて、効率よく
恒温槽１０を温める。温度検出器９で設定温度に
達したことを検知すると、電源制御回路１２で電
源１１を制御し、ペルチエ素子１に流す電源の向
きを変えて素子を冷却用として用いる。こうして
恒温槽の温度が上がりすぎるのを防ぐ、以後、温
度検出器９で恒温槽内の温度を調べ、設定温度よ
り低ければペルチエ素子１を加熱用、高ければ冷
却用として用いて温度制御する。このときの温度
制御特性を第３図に示す。設定温度付近で振動す
るのは、放熱器の持つ余熱と、放熱器と温度検出
器の間を循環する空気の時間遅れのためである。
例えば、温度が上がりすぎるのは、温度測定点の
温度が設定温度に達して加熱するのをやめても、
放熱器の温度が設定温度より高くなつているので
その温度差に対応する熱量分だけ空気が引き続き
加熱されるからである。 FIG. 2 shows a conventional method for controlling the temperature to be higher than the ambient temperature in an air constant temperature chamber using this Peltier element. In operation, first, a current is applied to the Peltier element 1 so that heat flows from the bottom to the top. In this way, the heat from the radiator 8 flows to the radiator 7, and the radiator 7 is rapidly heated. Air is circulated by a fan 5 while being applied to a radiator 7, and a thermostatic oven 10 is efficiently heated. When the temperature detector 9 detects that the set temperature has been reached, the power supply control circuit 12 controls the power supply 11, changes the direction of the power flowing to the Peltier element 1, and uses the element for cooling. In this way, the temperature of the thermostatic oven is prevented from rising too high.Then, the temperature inside the thermostatic oven is checked with the temperature detector 9, and if it is lower than the set temperature, the Peltier element 1 is used for heating, and if it is higher, the temperature is controlled by using it for cooling. The temperature control characteristics at this time are shown in FIG. The reason why the device oscillates around the set temperature is due to residual heat in the radiator and a time delay in the air circulating between the radiator and the temperature sensor.
For example, the temperature may rise too much even if the temperature at the temperature measurement point reaches the set temperature and heating is stopped.
This is because the temperature of the radiator is higher than the set temperature, so the air continues to be heated by the amount of heat corresponding to the temperature difference.
ペルチエ素子を用いたこの方法では、熱容量の
大きな空気恒温槽を温度制御する上で、次のよう
な欠点がある。 This method using a Peltier element has the following drawbacks when controlling the temperature of an air constant temperature bath with a large heat capacity.
加熱速度を上げるため、ワツト数の大きなペル
チエ素子を用いる場合、大電流（例えば、50Wの
動作能力を得るのに20〜30A）がとれる電源が必
要であり、電源自体での電力損失が大きくなる。 When using a Peltier element with a large wattage to increase the heating rate, a power source that can draw a large current (for example, 20 to 30 A to obtain an operating capacity of 50 W) is required, which increases the power loss in the power source itself. .
本発明の目的は、空気恒温槽を周囲温度より高
温に温度制御する場合において、加熱する際に設
定温度に達するまでに必要な時間を短くし、か
つ、設定温度付近での振動を小さくするような温
度制御機構を提供することにある。 An object of the present invention is to shorten the time required to reach the set temperature during heating when controlling the temperature of an air constant temperature oven to a temperature higher than the ambient temperature, and to reduce vibrations around the set temperature. The purpose of this invention is to provide a temperature control mechanism.
本発明は、空気恒温槽内を周囲より高温に制御
する温度制御器において、上記恒温槽内に放熱器
および温度検出器を配置し、上記放熱器には交流
によつて作動されるヒータを埋め込み、上記放熱
器をペルチエ素子の冷却側に取付け、上記恒温槽
内が設定温度に達したときの上記温度検出器から
の信号に基づき上記ヒータによる上記放熱器の加
熱を停止し、同時に上記ペルチエ素子により上記
放熱器の与熱を取り去るように冷却することを特
徴とする。 The present invention provides a temperature controller for controlling the inside of an air constant temperature chamber to a higher temperature than the surroundings, in which a radiator and a temperature detector are arranged in the constant temperature chamber, and a heater operated by alternating current is embedded in the radiator. , the heat radiator is attached to the cooling side of the Peltier element, and the heating of the heat radiator by the heater is stopped based on the signal from the temperature detector when the inside of the thermostatic chamber reaches the set temperature, and at the same time, the heat radiator is installed on the cooling side of the Peltier element. Cooling is performed so as to remove heat from the radiator.
周囲温度より高い設定温度にす早く到達させる
には、加熱用にワツト数の大きなヒータを用いれ
ばよい。しかし、ただヒータのワツト数を大きく
しただけでは、恒温槽が設定温度に達してヒータ
を切つた後の余熱が大きくなるため、その分恒温
槽が余計に加熱されて設定温度より高くなる。そ
こで、その余熱を取り去るために、ヒータの付い
た放熱器にペルチエ素子の冷却側を取り付けたも
のである。これにより、恒温槽をす早く加熱し、
かつ、設定温度到達後の加熱し過ぎが少なくな
り、設定温度付近での振動が小さくなる。 In order to quickly reach a set temperature higher than the ambient temperature, a heater with a large wattage may be used for heating. However, if you simply increase the wattage of the heater, the residual heat will increase after the thermostatic oven reaches the set temperature and the heater is turned off, so the thermostatic oven will be heated that much and the temperature will rise above the set temperature. Therefore, in order to remove the residual heat, the cooling side of the Peltier element is attached to a radiator equipped with a heater. This allows the temperature chamber to heat up quickly,
Moreover, overheating after reaching the set temperature is reduced, and vibrations around the set temperature are reduced.
以下、本発明の一実施例を第４図と第５図によ
り説明する。第４図において、第２図に示した従
来技術と異なる点は空気恒温槽１０を設定温度に
す早く到達させるために、加熱用にワツト数の大
きな交流で作動されるヒータ１４を用いているこ
とである。放熱器７，８及びフアン５の役目は第
２図と同じである。温度検出器９で恒温槽内の温
度が設定温度に達したことを知ると、ヒータ１４
を切り、冷却用ペルチエ素子１で放熱器７の温度
を下げる。この冷却作用で、放熱器７の持つてい
る余熱で恒温槽がさらに加熱されるのを防ぐこと
ができる。 An embodiment of the present invention will be described below with reference to FIGS. 4 and 5. 4, the difference from the prior art shown in FIG. 2 is that in order to quickly reach the set temperature in the air constant temperature chamber 10, a heater 14 operated with high wattage alternating current is used for heating. That's true. The roles of the heat radiators 7, 8 and the fan 5 are the same as in FIG. When the temperature detector 9 detects that the temperature in the thermostatic chamber has reached the set temperature, the heater 14 is activated.
is turned off, and the temperature of the radiator 7 is lowered using the cooling Peltier element 1. This cooling effect can prevent the thermostatic oven from being further heated by the residual heat of the radiator 7.
第５図は、本方式による恒温槽内の温度変化を
示すグラフである。第３図の従来方式による温度
変化と比較して、設定温度に到達するまでに必要
な時間が短くなり、かつ、ワツト数の大きなヒー
タを用いた割に、温度の上がりすぎが小さいこと
がわかる。 FIG. 5 is a graph showing the temperature change in the thermostatic chamber according to this method. Compared to the temperature change according to the conventional method shown in Figure 3, it can be seen that the time required to reach the set temperature is shorter, and the temperature rises less excessively even though a heater with a large wattage is used. .
本実施例によれば、大きなワツト数の必要な加
熱素子に交流で作動されるヒータを用いているの
で、制御機能も含めて、電源の構成が簡単にな
る。また、大容量のヒータを放熱器に埋め込んで
いるので、設定温度に達するまでの時間が短かく
なり、かつ、設定温度に達すると同時に放熱器の
与熱を取り去るように冷却するので、大容量のヒ
ータを用いたことによる加熱しすぎを防止でき
る。また、同一放熱器にペルチエ素子が配置され
ているので、放熱器の加熱および与熱の除去が容
易になり、温度変動の振幅が小さくなる結果、温
度の制御精度が向上する。さらに、ペルチエ素子
の冷却能力分だけ設定温度を周囲より低くするこ
ともできる。 According to this embodiment, since a heater operated by alternating current is used as the heating element that requires a large wattage, the configuration of the power supply including the control function is simplified. In addition, since a large-capacity heater is embedded in the radiator, the time it takes to reach the set temperature is shortened, and as soon as the set temperature is reached, the heat from the radiator is removed. Overheating caused by using a heater can be prevented. Furthermore, since the Peltier element is disposed in the same heat radiator, it becomes easy to heat the radiator and remove heat input, and as a result, the amplitude of temperature fluctuation is reduced, and as a result, temperature control accuracy is improved. Furthermore, the set temperature can be made lower than the ambient temperature by the cooling capacity of the Peltier element.
本発明によれば、空気恒温槽を周囲よりも高温
に制御する場合、加熱時には交流で作動されるヒ
ータによつて迅速に温度上昇させることができ、
また、上記ヒータが埋め込まれている放熱器にペ
ルチエ素子が配置されているので、放熱器の加熱
および与熱の除去が容易になり、恒温槽内の温度
を設定温度付近で精度良く制御できる。 According to the present invention, when controlling the air constant temperature chamber to a higher temperature than the surroundings, the temperature can be quickly raised by the heater operated by alternating current during heating,
Furthermore, since the Peltier element is disposed in the heat radiator in which the heater is embedded, it becomes easy to heat the radiator and remove heat, and the temperature in the thermostatic oven can be accurately controlled around the set temperature.
第１図は、ペルチエ素子の動作の説明図、第２
図は、ペルチエ素子のみによる空気恒温槽の構成
図、第３図は、第２図の方式による温度制御特性
を示すグラフ、第４図は、本発明の一実施例によ
る放熱器を使用した空気恒温槽の構成図、第５図
は、第４図の方式による温度制御特性を示すグラ
フである。
１…ペルチエ素子、７，８…放熱器、１４…ヒ
ータ。
Figure 1 is an explanatory diagram of the operation of the Peltier element, Figure 2
Figure 3 is a diagram showing the configuration of an air constant temperature chamber using only a Peltier element, Figure 3 is a graph showing temperature control characteristics using the method shown in Figure 2, and Figure 4 is an air conditioner using a radiator according to an embodiment of the present invention. FIG. 5, which is a diagram showing the configuration of the thermostatic chamber, is a graph showing the temperature control characteristics according to the method shown in FIG. 1... Peltier element, 7, 8... radiator, 14... heater.
Claims (1)
制御器において、上記恒温槽内に放熱器および温
度検出器を配置し、上記放熱器には交流によつて
作動されるヒータを埋め込み、上記放熱器をペル
チエ素子の冷却側に取付け、上記恒温槽内が設定
温度に達したときの上記温度検出器からの信号に
基づき上記ヒータによる上記放熱器の加熱を停止
し、同時にペルチエ素子により上記放熱器の余熱
を取り去るように冷却することを特徴とする温度
制御器。1. In a temperature controller that controls the inside of an air constant temperature chamber to a higher temperature than the surroundings, a heat radiator and a temperature detector are arranged in the constant temperature chamber, a heater operated by alternating current is embedded in the heat radiator, and the heat radiator is A device is attached to the cooling side of the Peltier element, and when the inside of the constant temperature chamber reaches the set temperature, the heating of the radiator by the heater is stopped based on the signal from the temperature detector, and at the same time, the heating of the radiator by the Peltier element is stopped. A temperature controller characterized by cooling so as to remove residual heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15220981A JPS5854410A (en) | 1981-09-28 | 1981-09-28 | Temperature controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15220981A JPS5854410A (en) | 1981-09-28 | 1981-09-28 | Temperature controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5854410A JPS5854410A (en) | 1983-03-31 |
| JPH0221005B2 true JPH0221005B2 (en) | 1990-05-11 |
Family
ID=15535447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15220981A Granted JPS5854410A (en) | 1981-09-28 | 1981-09-28 | Temperature controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5854410A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5855450Y2 (en) * | 1977-12-29 | 1983-12-19 | 株式会社島津製作所 | Constant temperature bath equipment |
-
1981
- 1981-09-28 JP JP15220981A patent/JPS5854410A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5854410A (en) | 1983-03-31 |
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