JP2004061399A - Thermostatic chamber - Google Patents

Thermostatic chamber Download PDF

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Publication number
JP2004061399A
JP2004061399A JP2002222692A JP2002222692A JP2004061399A JP 2004061399 A JP2004061399 A JP 2004061399A JP 2002222692 A JP2002222692 A JP 2002222692A JP 2002222692 A JP2002222692 A JP 2002222692A JP 2004061399 A JP2004061399 A JP 2004061399A
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Japan
Prior art keywords
temperature
door
inspection room
measurement
humidity
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.)
Pending
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JP2002222692A
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Japanese (ja)
Inventor
Hirokazu Kobayashi
小林 宏和
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Crystal Device Corp
Original Assignee
Kyocera Crystal Device Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kyocera Crystal Device Corp filed Critical Kyocera Crystal Device Corp
Priority to JP2002222692A priority Critical patent/JP2004061399A/en
Publication of JP2004061399A publication Critical patent/JP2004061399A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a thermostatic chamber having a door lock means for preventing a door from unnecessarily opening or closing. <P>SOLUTION: The thermostatic chamber includes an inspection chamber for holding a sample to be inspected, a temperature/humidity device for heating/cooling or humidifying/dehumidifying the inspection chamber, a controller for controlling the temperature/humidity device at a desired value, and a door for tightly closing the inspection room. The door lock means is further provided to control the temperature or humidity of the thermostatic chamber and operates corresponding to a control measurement program for measuring a characteristic of the sample to be inspected arranged in the chamber. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】この発明は恒温槽に関し、特に恒温槽内部の温度又は湿度の管理が極めて精密な恒温槽に関する。
【0002】
【従来技術】通常恒温槽は、室内に被検査体などを収納する検査室とその検査室を密閉する扉、検査室内に任意の温度に制御された空気や窒素雰囲気を流入させ且つ吸い出す気体流路と、その流路中に流路内の気体を任意の温度に制御する加熱装置及び冷却装置と、その加熱装置及び冷却装置を制御する制御機構と検査室内の温度状況を表示する表示手段などで構成されており、検査室及び気体流路は断熱材で覆われている。
【0003】
恒温槽における検査室内の温度は、検査室内の気体を気体流路に吸い出し、気体流路中の加熱器又は冷却器で制御装置より制御された所定の温度に気体を調整した後、再度気体流路を通して検査室内に気体を流入させ、検査室内の気体を循環させることにより検査室内の温度が制御されている。
【0004】
更に、温度制御の自動化や被検査体測定等の自動化を行うために、その自動制御手段として恒温槽外部にパソコン等を配置し、恒温槽内の温湿度制御機構及び被検査体と電気的に接続し、自動制御、更に自動測定等を行っている。
【0005】
【発明が解決しようとする課題】前記従来技術における恒温槽の扉には、扉を恒温槽本体に密着固定又は開放させる扉開閉手段は装備されているが、扉が不必要に開閉することを防止する扉ロック手段が搭載されていないため、温度制御中や被検査体の測定中に誤って扉を開閉し検査室内の温度を制御できない状態にしてしまうことがあり、特に被検査体における温度特性等を測定している場合では、再度の特性を測定しなくてはならなくなり、検査工程の効率が著しく低下してしまう可能性がある。
【0006】
又、恒温槽を、検査室内の雰囲気を窒素に置換した状態で検査室内に配置した物品を高温で乾燥させる自動制御乾燥機として使用した場合、乾燥中に誤って恒温槽の扉を開けてしまった場合、空気が検査室内に流入し、高温状態にある物品表面を酸化させてしまう問題が生ずる可能性もあった。
【0007】
【課題を解決するための手段】この発明は前記従来技術の課題を鑑みて成されたものであり、恒温槽本体にあって、被検査体を収容する検査室と、その検査室内を加熱冷却加湿除湿する温湿度装置及び温湿度装置を所望の値に制御する制御機構と、この検査室を密閉する扉からなる恒温槽において、該恒温槽の槽内温度及び/又は湿度を制御し、且つ該槽内に配置した被検査体の特性を測定する制御測定プログラムと連動して動作する扉ロック手段を具備することを特徴とする恒温槽である。
【0008】
このような構造の恒温槽においては、自動制御測定プログラムが動作中は恒温槽の扉を誤って開くことができなくする作用が奏する。
【0009】
【発明の実施の形態】以下に、この発明の実施形態について図面に基づいて詳細に説明する。図1は本発明における恒温槽において、一実施状態を示した図である。図2は本発明の構成を示したブロック図である。図3は本発明において、一測定検査における動作フローチャートと扉ロック状態を示した図である。尚、図1及び図2において、説明を明りょうにするため構造体の一部を図示せず、又図1においては、一部寸法を誇張して図示している。
【0010】
即ち、恒温槽11には、室内に被検査体などを収納する検査室12と、その検査室を密閉する扉13とその扉には検査室を密閉状態に維持する検査室密閉手段14で構成されている。尚、検査室密閉手段14には、扉13を恒温槽11本体に密着固定又は開放させる扉開閉手段と、扉13を恒温槽11本体に密着固定状態でロックし扉13を開放できなくする扉ロック手段とが具備されている。扉開閉手段には、機械式手段又は電磁式手段等の構成で通常使用されており、扉ロック手段も扉開閉手段の構成に対応した形式手段の構成で形成されている。
【0011】
又、検査室内に任意の温度に制御された空気や窒素雰囲気などの気体を流入させ且つ吸い出す気体流路15と、その気体流路15の気体を任意の温湿度に制御する加熱装置16、冷却装置17、加湿装置18及び除湿装置19と、その装置類を制御する温湿度制御機構20と検査室内の温度状況を表示する簡易表示機構21などで恒温槽11が構成されている。
【0012】
更に、恒温槽11の温湿度制御の自動化や被検査体測定の自動化を行うために、その自動制御機構として恒温槽11外部にパソコン22を配置し、恒温槽11内の温湿度制御機構20及び被検査体と電気的に接続し、パソコン22からの出力信号により自動制御測定を行っている。
【0013】
このような構造の恒温槽を使用した検査体測定を、圧電発振器を被検査体とした場合を簡易例示し、このときの恒温槽の扉ロック動作を図3を参照して説明する。最初に、処理S1において、パソコン22における制御測定プログラムの開始とほぼ同時に恒温槽11の検査室密閉手段14における扉ロック手段に信号を出し、扉をロックする。
【0014】
次に処理S2において、パソコン22で動作している制御測定プログラム内に設定している測定温度点すべてで圧電発振器の発振周波数の測定が完了しているかどうかを確認する。測定が完了していない場合は、処理S3に進み、設定測定温度点の内次の順番の設定測定温度となるように、パソコン22から恒温槽11の温湿度制御手段に信号を出力する。
【0015】
次に処理S4において、検査室内の少なくとも1箇所以上に設置された温度センサにより測定された温度データが、制御測定プログラムに設定された温度範囲内に一定時間入っているかを確認する。温度範囲に入っていない場合は、再度処理S4の動作が繰り返えされる。一定時間温度範囲の中に入っていた場合は、処理S5にて圧電発振器の発振周波数測定等を行う。
【0016】
通常は複数個の圧電発振器について測定を行うので、処理S6にて全ての圧電発振器の発振周波数データを取得したかどうかを確認する。未取得の場合は処理S5及び処理S6を繰り返し、取得が完了した場合は、処理S2に戻り、次の設定測定温度点での測定を行う。
【0017】
処理S2において全ての測定データの取得が確認された場合は、処理S7に移行し恒温槽11の検査室密閉手段14における扉ロック手段に解除信号を出し、扉のロックを解除する。尚、このときは安全のため検査室内の温度が常温付近になってから扉のロックを解除するのが望ましい。
【0018】
尚、この扉ロック手段は、常時検査室内の温湿度データを監視している温湿度制御機構と連動しており、もし検査室内の温度が異常高温、異常低温になったり、又、パソコンから送られた制御温度データと検査室内の温度データとの差が一定時間変化が無い場合や、停電時などは、安全のためにロックを中止又は解除されるようになっている。更に、扉のロックの解除は、温湿度制御機構からの解除信号による解除だけではなく、恒温槽本体に扉ロック解除ボタンを設置し、非常時にはこのボタンを操作することで、直接扉のロックを解除できるようにもなっている。
【0019】
【発明の効果】以上説明したように、請求項1に係る本発明の恒温槽によって、恒温槽にて被検査体の測定おける誤った恒温槽扉の開閉のための測定不成功による再測定を回避できる。又、恒温槽を窒素置換した乾燥機として用いた場合に問題であった、扉誤開閉による物品の酸化を防止できる。因って、恒温槽を使用した測定の効率を上げることや、物品の製造における不良品の発生を防止できるという効果を成す。
【図面の簡単な説明】
【図1】図1は、本発明の一実施形態例を示す構成図である。
【図2】図2は、本発明の一実施形態例を示す恒温槽等のブロック図である。
【図3】図3は、本発明における恒温槽を使用した場合の圧電発振器測定フローチャート図である。
【符号の説明】
11,恒温槽
12,検査室
13,扉
14,検査室密閉手段
15,気体流路
16,加熱装置
17,冷却装置
18.加湿装置
19,除湿装置
20,温湿度制御機構
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermostat, and more particularly to a thermostat in which the temperature or humidity inside the thermostat is controlled very precisely.
[0002]
2. Description of the Related Art Usually, a thermostatic chamber is an inspection room for accommodating an object to be inspected in a room, a door for sealing the inspection room, and a gas flow for allowing air or nitrogen atmosphere controlled at an arbitrary temperature to flow into and out of the inspection room. A passage, a heating device and a cooling device for controlling the gas in the passage to an arbitrary temperature in the passage, a control mechanism for controlling the heating device and the cooling device, and a display means for displaying a temperature condition in the inspection room. , And the inspection room and the gas flow path are covered with a heat insulating material.
[0003]
The temperature in the test chamber in the thermostatic chamber is determined by sucking the gas in the test chamber into the gas flow path, adjusting the gas to a predetermined temperature controlled by the control device with a heater or a cooler in the gas flow path, and then re-starting the gas flow. The temperature in the inspection room is controlled by flowing gas into the inspection room through the passage and circulating the gas in the inspection room.
[0004]
Furthermore, in order to automate the temperature control and the measurement of the object to be inspected, a personal computer or the like is disposed outside the thermostatic chamber as an automatic control means, and the temperature and humidity control mechanism in the thermostatic chamber and the object to be inspected are electrically connected. Connected, automatic control, and automatic measurement are performed.
[0005]
The door of the thermostat in the prior art is provided with a door opening / closing means for fixing and opening the door in close contact with the thermostat main body. However, the door is required to be opened and closed unnecessarily. Since the door lock means for preventing the inspection is not mounted, the door may be opened and closed accidentally during temperature control or measurement of the object to be inspected, and the temperature in the inspection room may not be controlled. When the characteristics are measured, the characteristics must be measured again, and the efficiency of the inspection process may be significantly reduced.
[0006]
In addition, when the thermostatic oven is used as an automatic control dryer for drying the articles placed in the inspection room at a high temperature in a state where the atmosphere in the inspection room is replaced with nitrogen, the door of the oven is accidentally opened during drying. In such a case, there is a possibility that air may flow into the inspection room and oxidize the surface of the article in a high temperature state.
[0007]
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has an inspection room in a thermostatic chamber main body for housing an object to be inspected, and heating and cooling the inspection room. A temperature / humidity device for humidifying and dehumidifying, a control mechanism for controlling the temperature / humidity device to a desired value, and a constant temperature bath including a door closing the inspection room, controlling the temperature and / or humidity in the constant temperature bath, and A thermostatic oven characterized by comprising a door locking means which operates in conjunction with a control measurement program for measuring characteristics of a test object arranged in the oven.
[0008]
In the thermostat having such a structure, an effect is provided that the door of the thermostat cannot be opened by mistake while the automatic control measurement program is operating.
[0009]
Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing one embodiment of a thermostat in the present invention. FIG. 2 is a block diagram showing the configuration of the present invention. FIG. 3 is a diagram showing an operation flowchart and a door locked state in one measurement inspection in the present invention. In FIGS. 1 and 2, a part of the structure is not shown for clarity, and in FIG. 1, a part of the structure is exaggerated.
[0010]
That is, the thermostatic chamber 11 is composed of an inspection room 12 for accommodating an object to be inspected in the room, a door 13 for sealing the inspection room, and an inspection room sealing means 14 for maintaining the inspection room in a closed state at the door. Have been. The inspection room sealing means 14 includes a door opening / closing means for tightly fixing or opening the door 13 to the thermostatic chamber 11 main body, and a door for locking the door 13 in the thermostatic chamber 11 main body and locking the door 13 so that the door 13 cannot be opened. And locking means. The door opening / closing means is usually used in the form of a mechanical means or an electromagnetic means, and the door locking means is also formed in the form of a type means corresponding to the structure of the door opening / closing means.
[0011]
Also, a gas flow path 15 for flowing and sucking a gas such as air or nitrogen atmosphere controlled to an arbitrary temperature into the inspection room, a heating device 16 for controlling the gas in the gas flow path 15 to an arbitrary temperature and humidity, and a cooling device. The constant temperature chamber 11 includes the device 17, the humidifying device 18, the dehumidifying device 19, a temperature / humidity control mechanism 20 for controlling the devices, a simple display mechanism 21 for displaying a temperature condition in the inspection room, and the like.
[0012]
Furthermore, in order to automate the temperature / humidity control of the thermostat 11 and the measurement of the test object, a personal computer 22 is disposed outside the thermostat 11 as an automatic control mechanism, and the temperature / humidity control mechanism 20 in the thermostat 11 and It is electrically connected to the test object, and performs automatic control measurement by an output signal from the personal computer 22.
[0013]
The measurement of a test object using a thermostat having such a structure is simply exemplified by a case where a piezoelectric oscillator is used as a test subject, and a door locking operation of the thermostat at this time will be described with reference to FIG. First, in process S1, almost simultaneously with the start of the control and measurement program in the personal computer 22, a signal is issued to the door locking means in the examination room sealing means 14 of the thermostatic chamber 11 to lock the door.
[0014]
Next, in process S2, it is confirmed whether or not the measurement of the oscillation frequency of the piezoelectric oscillator has been completed at all the measurement temperature points set in the control measurement program running on the personal computer 22. If the measurement has not been completed, the process proceeds to step S3, where a signal is output from the personal computer 22 to the temperature / humidity control means of the thermostatic bath 11 so that the set measurement temperature in the next order among the set measurement temperature points is obtained.
[0015]
Next, in process S4, it is confirmed whether or not the temperature data measured by the temperature sensors installed at at least one location in the inspection room has been within a temperature range set in the control measurement program for a certain period of time. If not, the operation of the process S4 is repeated. If the temperature has been within the temperature range for a certain period of time, the oscillation frequency of the piezoelectric oscillator is measured in step S5.
[0016]
Normally, measurement is performed for a plurality of piezoelectric oscillators, so it is checked whether or not the oscillation frequency data of all the piezoelectric oscillators has been acquired in step S6. If not acquired, steps S5 and S6 are repeated. If acquisition is completed, the process returns to step S2 to perform measurement at the next set measurement temperature point.
[0017]
If the acquisition of all the measurement data is confirmed in the process S2, the process proceeds to the process S7, where a release signal is issued to the door locking means in the inspection room sealing means 14 of the constant temperature bath 11, and the door is unlocked. At this time, it is desirable to release the lock of the door after the temperature in the inspection room becomes close to room temperature for safety.
[0018]
This door lock means is linked with a temperature and humidity control mechanism that constantly monitors the temperature and humidity data in the inspection room, and if the temperature in the inspection room becomes abnormally high or abnormally low, or transmitted from a personal computer. When the difference between the obtained control temperature data and the temperature data in the inspection room does not change for a certain period of time, or when a power failure occurs, the lock is stopped or released for safety. In addition to unlocking the door, not only the unlock signal from the temperature / humidity control mechanism but also the door lock release button is installed on the thermostatic chamber main body, and this button is operated in an emergency to directly lock the door. It can also be unlocked.
[0019]
As described above, the thermostat according to the first aspect of the present invention makes it possible to perform re-measurement due to an unsuccessful measurement due to erroneous opening and closing of the thermostat door in measurement of a test object in the thermostat. Can be avoided. Further, it is possible to prevent oxidation of articles due to erroneous opening and closing of the door, which is a problem when the thermostat is used as a dryer with a nitrogen purge. Therefore, it is possible to increase the efficiency of measurement using a thermostat and to prevent the occurrence of defective products in the manufacture of articles.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an embodiment of the present invention.
FIG. 2 is a block diagram of a thermostat and the like showing an embodiment of the present invention.
FIG. 3 is a flowchart of a piezoelectric oscillator measurement in a case where the thermostatic bath according to the present invention is used.
[Explanation of symbols]
11. thermostatic bath 12, inspection room 13, door 14, inspection room sealing means 15, gas flow path 16, heating device 17, cooling device 18. Humidifier 19, dehumidifier 20, temperature and humidity control mechanism

Claims (1)

恒温槽本体にあって、被検査体を収容する検査室と、該検査室内を加熱冷却加湿除湿する温湿度装置及び該温湿度装置を所望の値に制御する制御機構と、該検査室を密閉する扉からなる恒温槽において、該恒温槽の槽内温度及び/又は湿度を制御し、且つ該槽内に配置した被検査体の特性を測定する制御測定プログラムと連動して動作する扉ロック手段を具備することを特徴とする恒温槽。An inspection room in the thermostatic chamber main body, in which an object to be inspected is accommodated, a temperature / humidity device for heating, cooling, humidifying and dehumidifying the inspection room, a control mechanism for controlling the temperature / humidity device to a desired value, and sealing the inspection room Door lock means that operates in conjunction with a control measurement program that controls the temperature and / or humidity in the bath of the thermostatic bath and measures the characteristics of the test object placed in the bath. A thermostat comprising:
JP2002222692A 2002-07-31 2002-07-31 Thermostatic chamber Pending JP2004061399A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101437631B1 (en) 2012-12-31 2014-09-15 한국기계연구원 Apparatus for controlling interior temperature of chamber using humidity control and the method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101437631B1 (en) 2012-12-31 2014-09-15 한국기계연구원 Apparatus for controlling interior temperature of chamber using humidity control and the method thereof

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