JP2507898Y2 - Temperature controller for constant temperature bath - Google Patents
Temperature controller for constant temperature bathInfo
- Publication number
- JP2507898Y2 JP2507898Y2 JP1989135962U JP13596289U JP2507898Y2 JP 2507898 Y2 JP2507898 Y2 JP 2507898Y2 JP 1989135962 U JP1989135962 U JP 1989135962U JP 13596289 U JP13596289 U JP 13596289U JP 2507898 Y2 JP2507898 Y2 JP 2507898Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- constant temperature
- heater
- temperature control
- test tank
- 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
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Devices For Use In Laboratory Experiments (AREA)
- Control Of Temperature (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は主としてタイヤなどのゴム材料あるいはプラ
スチック材料を低温から高温までの広範囲な温度におけ
る動的粘弾性を測定し、その構造解析あるいは品質管理
に使用する動的粘弾性測定装置に関するもので、特に試
料を収める恒温槽内での温度制御装置の改良型を提案す
るものである。[Detailed Description of the Invention] (Industrial field of application) The present invention mainly measures the dynamic viscoelasticity of a rubber material or a plastic material such as a tire in a wide range of temperatures from low temperature to high temperature, and analyzes its structure or quality control. The present invention relates to a dynamic viscoelasticity measuring device for use in, and particularly proposes an improved type of temperature control device in a thermostatic chamber containing a sample.
（従来の技術） （ａ）従来に於けるこの種の恒温試験槽の温度制御方式
は試験槽内に設けられた電気ヒーターが組込まれた試料
室に液化窒素ガスと空気の混合気体を直接吹きつけて電
気ヒーターによって温度を制御していた。(Prior Art) (a) In the conventional temperature control method of this type of constant temperature test tank, a mixed gas of liquefied nitrogen gas and air is directly blown to a sample chamber in which an electric heater provided in the test tank is incorporated. It was turned on and the temperature was controlled by an electric heater.
（ｂ）又、ゴム材料の製造工程における品質管理を行う
ための方法として材料の粘弾性率を測定する。この場
合、一定温度に於いて多数の試験片を測定するために恒
温槽の蓋の開閉を頻繁に行い、試験片の交換をする。こ
の時、恒温槽内の温度が設定した温度に素早く戻らない
と測定能率が悪くなり品質管理に支障を来すものであ
る。(B) Further, the viscoelastic modulus of the material is measured as a method for performing quality control in the manufacturing process of the rubber material. In this case, in order to measure many test pieces at a constant temperature, the lid of the thermostatic chamber is frequently opened and closed to replace the test pieces. At this time, unless the temperature in the constant temperature bath is quickly returned to the set temperature, the measurement efficiency is deteriorated and the quality control is hindered.
（考案が解決しようとする課題） 前記した従来の（ａ）の場合に於いては第５図及び第
６図に示す如く試料に加える一定温度制御や、等速昇温
制御時に於ける温度が不安定に上下して（ハンチング現
象）その温度制御精度は良くなかった。又、前記した従
来の（ｂ）の場合に於いて、蓋体を開けて試験片を取付
けて閉じた場合には第７図に示す如くハンチング的な温
度変化が生じ設定温度に到達するまに時間がかかる欠点
があった。(Problems to be Solved by the Invention) In the case of the above-mentioned conventional (a), the temperature in the constant temperature control applied to the sample as shown in FIGS. It went up and down instably (hunting phenomenon) and its temperature control accuracy was not good. Further, in the case of the above-mentioned conventional (b), when the lid is opened and the test piece is attached and closed, a hunting-like temperature change occurs as shown in FIG. 7 until the set temperature is reached. It had the drawback of being time consuming.
而して、本考案は従来技術の欠点に鑑みなされたもの
で測定中に恒温槽の扉を開閉した時の安全性と槽内温度
制御精度の向上、設定温度に復帰する時間の短縮性能を
向上せしめる事を技術的課題とするものである。Thus, the present invention has been made in view of the drawbacks of the prior art, and improves safety when the door of the constant temperature bath is opened and closed during measurement, improvement of bath temperature control accuracy, and shortening time to return to the set temperature. It is a technical issue to improve it.
（課題を解決するための手段） 本考案では低温域から高温域まで恒温試験槽に供給す
る気体の温度制御には液体窒素と乾燥空気を混合する混
合室を設け、ここで低温になった混合気体はニクロム線
ヒーターの中を通り温度制御されて恒温試験室に供給さ
れるシステムに成してある。(Means for Solving the Problems) In the present invention, a temperature control of the gas supplied to the constant temperature test chamber from the low temperature region to the high temperature region is provided with a mixing chamber for mixing liquid nitrogen and dry air, and the mixing temperature becomes low. The gas passes through the nichrome wire heater and is temperature controlled and supplied to the constant temperature test chamber.
（作用） 液体窒素コンテナより取り出した液体窒素を混合器に
送給すると共に空気圧縮機からの空気を前記混合器に供
給し、該混合器内で液体窒素と空気とを混合してガス化
した混合ガスを加熱器に送気して所定温度にコントロー
ルして恒温試験槽に供給するものである。(Operation) Liquid nitrogen taken out from the liquid nitrogen container is fed to the mixer, and air from the air compressor is supplied to the mixer, and liquid nitrogen and air are mixed and gasified in the mixer. The mixed gas is sent to a heater, controlled to a predetermined temperature, and supplied to a constant temperature test tank.
（実施例） 第１図乃至第３図に於いて、１は動的粘弾性測定装置
であり、該動的粘弾性測定装置１は温度制御装置本体２
と恒温試験槽３と液体窒素（LN2）コンテナ４と空気圧
縮機（5kg/cm2）５と温度コントロールユニット６とCPU
回路ユニット７とから構成してある。温度制御装置本体
２の温度制御範囲は−150℃〜＋200℃である。(Example) In FIGS. 1 to 3, reference numeral 1 is a dynamic viscoelasticity measuring apparatus, and the dynamic viscoelasticity measuring apparatus 1 is a temperature controller main body 2
, Constant temperature test tank 3, liquid nitrogen (LN 2 ) container 4, air compressor (5 kg / cm 2 ) 5, temperature control unit 6 and CPU
It is composed of a circuit unit 7. The temperature control range of the temperature control device body 2 is -150 ° C to + 200 ° C.
８は脱水機で空気圧縮機５から供給される圧縮空気中
の水分を除去するもので温度コントロールユニット６か
ら電力Ｐ供給により作動するものである。10は圧力スイ
ッチである。A dehydrator 8 removes water in the compressed air supplied from the air compressor 5, and is operated by the power P supplied from the temperature control unit 6. 10 is a pressure switch.
11は混合器であり、第３図に示す如くその内部にはス
テンレス等の金属製線材11Aを不規則に丸めたものを入
れてある。Reference numeral 11 is a mixer, and as shown in FIG. 3, a metal wire rod 11A made of stainless steel or the like is irregularly rolled therein.
而して、脱水機８により脱水された乾燥圧縮空気と液
体窒素コンテナ４から供給される低温の窒素ガスとを該
混合器11内に送り込み、ここで乱流を生ぜしめ混合ガス
を作る。Then, the dry compressed air dehydrated by the dehydrator 8 and the low-temperature nitrogen gas supplied from the liquid nitrogen container 4 are fed into the mixer 11, where a turbulent flow is generated to form a mixed gas.
12は加熱器であり、第４図に示す如くセラミック碍子
12Bにニクロム線ヒーター12Aを捲回してある。而して、
混合器11で混合された混合ガスは加熱器12へ送られここ
で所定温度に加熱される。13はバッファー、14は恒温試
験槽３内に配設した温度センサーで熱電対を採用してあ
る。12 is a heater, as shown in FIG. 4, a ceramic insulator
A nichrome wire heater 12A is wound around 12B. Therefore,
The mixed gas mixed in the mixer 11 is sent to the heater 12 where it is heated to a predetermined temperature. Reference numeral 13 is a buffer, and 14 is a temperature sensor arranged in the constant temperature test tank 3, which is a thermocouple.
この温度センサー14は温度コントロールユニット６に
接続してあり、該温度コントロールユニット６はCPU回
路ユニット７により予め設定された温度プログラムに基
き、加熱器12に於けるニクロム線ヒーター12Aに流れる
加熱電流をコントロールして恒温試験槽３の温度を所定
温度にすべく成してある。前記した恒温試験槽３は扉体
3Aを有するもので、この扉体3Aを開放した際に加熱器12
の過熱防止をすべく扉体3Aに付加してあるドアスイッチ
（図示せず）が作動し、温度コントロールユニット６を
介して第一電磁弁SV1と第二電磁弁SV2とを閉め、圧縮空
気と液体窒素の流出を停止する。同時に加熱器12による
加熱も停止する。The temperature sensor 14 is connected to the temperature control unit 6, which controls the heating current flowing through the nichrome wire heater 12A in the heater 12 based on the temperature program preset by the CPU circuit unit 7. The temperature of the constant temperature test tank 3 is controlled to be a predetermined temperature. The above-mentioned constant temperature test tank 3 is a door body
It has 3A, and when the door 3A is opened, the heater 12
Of was added to the door 3A in order to overheating prevention door switch (not shown) is actuated are, closing the first solenoid valve SV 1 through the temperature control unit 6 and the second solenoid valve SV 2, compression Stop the flow of air and liquid nitrogen. At the same time, heating by the heater 12 is also stopped.
扉体3Aを閉じた際にはドアスイッチが作動し、第一電
磁弁SV1と第二電磁弁SV2とを開弁して加熱器12を作動さ
せて恒温試験槽３の温度コントロールを開始する。V1は
ストップバルブ、V2，V3V4は流量調整弁である。15はド
アスイッチ接続線、16はAC100Vの商用電源、17は安全
弁、17Aは破裂板、18は保圧弁、18Aはガス放出弁、19は
昇圧弁、20は断熱配管である。When the door body 3A is closed, the door switch is activated, the first solenoid valve SV 1 and the second solenoid valve SV 2 are opened, and the heater 12 is activated to start the temperature control of the constant temperature test tank 3. To do. V 1 is a stop valve, and V 2 , V 3 V 4 are flow control valves. Reference numeral 15 is a door switch connection line, 16 is a commercial power source of 100 VAC, 17 is a safety valve, 17A is a rupture plate, 18 is a pressure holding valve, 18A is a gas release valve, 19 is a boost valve, and 20 is a heat insulation pipe.
而して、空気圧縮機５により圧縮された5kg/cm2の空
気は第一電磁弁SV1を通って脱水機８へ送られ、ここで
水分除去が行われる。Thus, the air of 5 kg / cm 2 compressed by the air compressor 5 is sent to the dehydrator 8 through the first solenoid valve SV 1 and the water is removed there.
次いで、圧力調整弁L1により、約0.4kg/cm2に減圧
さ、浮子式の流量調整弁V2を通って混合器11へ送られ
る。Then, the pressure is reduced to about 0.4 kg / cm 2 by the pressure adjusting valve L 1 and is sent to the mixer 11 through the float type flow rate adjusting valve V 2 .
一方、液体窒素コンテナ４内の液体窒素は第二電磁弁
SV2、流体調整弁V3を通って混合器11へ送られ、ここで
前記圧縮空気と混合されて空気と窒素の混合ガスとな
り、断熱配管20を介して加熱器12へ送られ、そこで予め
設定されたCPU回路ユニット７のプログラミングに基い
た温度コントロールユニット６の指令でもって適宜の温
度に加熱せしめられる。On the other hand, the liquid nitrogen in the liquid nitrogen container 4 is the second solenoid valve.
SV 2 , is sent to the mixer 11 through the fluid regulating valve V 3 , where it is mixed with the compressed air to become a mixed gas of air and nitrogen, which is sent to the heater 12 via the adiabatic pipe 20 and there in advance. It is heated to an appropriate temperature according to a command from the temperature control unit 6 based on the set programming of the CPU circuit unit 7.
而して、加熱せしめられた混合ガスは流量調整弁V4，
バッファー13を通って恒温試験槽３内へ供給される。こ
のように恒温試験槽３内はCPU回路ユニット７によるプ
ログラミング設定に基いて温度が制御される。Thus, the heated mixed gas is flow rate adjusting valve V 4 ,
It is supplied into the constant temperature test tank 3 through the buffer 13. In this way, the temperature inside the constant temperature test tank 3 is controlled based on the programming setting by the CPU circuit unit 7.
今、前記した混合器11を介さず圧縮空気と窒素ガスと
を直接加熱器12で加熱し、恒温試験槽３へ送ると、恒温
試験槽３内の温度は安定せず、CPU回路ユニット７で設
定された温度（第２図ａ）とのずれが生じる。（第２図
ｂ）更に、恒温試験槽３の扉体3Aを一度開き、再び閉め
た時の恒温試験槽３内の温度の設定温度への復帰が遅
れ、安定した制御が出来にくい。従って上記のように混
合器11を介して圧縮空気と窒素ガスを混合して混合ガス
とすることで恒温試験槽３内の温度制御の安定化を図る
ことが出来ると共に、扉体3Aを開けた際に恒温試験槽３
内の過熱及び過冷却を防ぐために圧縮空気の送給を停止
し、液体窒素の供給を停止し、加熱器12の加熱電流を断
つものである。Now, when compressed air and nitrogen gas are directly heated by the heater 12 and sent to the constant temperature test tank 3 without passing through the mixer 11 described above, the temperature in the constant temperature test tank 3 is not stable, and the CPU circuit unit 7 A deviation from the set temperature (Fig. 2a) occurs. (Fig. 2b) Furthermore, when the door body 3A of the constant temperature test tank 3 is once opened and then closed again, the temperature inside the constant temperature test tank 3 is delayed in returning to the set temperature, making it difficult to perform stable control. Therefore, as described above, by mixing the compressed air and the nitrogen gas through the mixer 11 to form a mixed gas, the temperature control in the constant temperature test tank 3 can be stabilized and the door body 3A is opened. In case of constant temperature test tank 3
In order to prevent overheating and supercooling of the inside, the supply of compressed air is stopped, the supply of liquid nitrogen is stopped, and the heating current of the heater 12 is cut off.
（考案の効果） 而して、本考案では叙上の如き構成を有するので下記
の如き効果がある。(Effect of the Invention) Since the present invention has the above configuration, it has the following effects.
（ａ）請求項１の記載に於いては圧縮空気と液体窒素と
を混合器に入れ、空気−窒素混合ガスとしたものを加熱
器で設定温度に加熱し、恒温試験槽へ供給する為、恒温
試験槽内の安定した温度制御が出来る。(A) In the first aspect of the present invention, compressed air and liquid nitrogen are put in a mixer, and an air-nitrogen mixed gas is heated to a set temperature by a heater and supplied to a constant temperature test tank. Stable temperature control in the constant temperature test tank is possible.
（ｂ）請求項３の記載に於いては恒温試験槽の扉体を開
いた際に、圧縮空気、液体窒素、加熱器の加熱電流の供
給をそれぞれ停止すべく成した為、恒温試験槽内の過
熱、過冷却を防ぐと共に、再び扉体を閉めた際に恒温試
験槽内の温度の設定温度への復帰が早く出来る。(B) According to the third aspect, when the door of the constant temperature test tank is opened, the supply of compressed air, liquid nitrogen, and the heating current of the heater are stopped respectively. In addition to preventing overheating and overcooling, the temperature inside the thermostatic test tank can quickly return to the set temperature when the door is closed again.
第１図は本考案装置のブロック図、第２図は本考案装置
の混合器を使用した場合と使用しない場合との比較を示
してある。 第３図は混合器の縦断正面図、第４図は加熱器の斜視図
である。 第５図乃至第７図は従来技術を示してある。 ３……恒温試験槽、６……温度コントロールユニット、
11……混合器、12……加熱器FIG. 1 shows a block diagram of the device of the present invention, and FIG. 2 shows a comparison between the case where the mixer of the device of the present invention is used and the case where the mixer is not used. FIG. 3 is a vertical sectional front view of the mixer, and FIG. 4 is a perspective view of the heater. 5 to 7 show the prior art. 3 ... Constant temperature test tank, 6 ... Temperature control unit,
11 …… Mixer, 12 …… Heater
───────────────────────────────────────────────────── フロントページの続き (72)考案者 豊田 恵嗣 埼玉県川口市青木３―５―１ 株式会社 東理社内 (56)参考文献 特開 昭60−33031（ＪＰ，Ａ) 特公 昭59−14182（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Keiji Toyota 3-5-1 Aoki, Kawaguchi City, Saitama Tori Co., Ltd. (56) References JP-A-60-33031 (JP, A) JP-B Sho-59- 14182 (JP, B2)
Claims (3)
んで混合し、混合ガスを温度コントロールユニット６の
設定に基き作動する加熱器12へ送給して加熱し、恒温試
験槽３へ送気すべく成した恒温槽の温度制御装置1. Compressed air and liquid nitrogen are sent to and mixed with a mixer 11, and a mixed gas is sent to and heated by a heater 12 which operates based on the setting of a temperature control unit 6, to a constant temperature test tank 3. Temperature control device for thermostatic chamber designed to supply air
に丸めて入れた請求項１記載の恒温槽の温度制御装置2. The temperature control device for a thermostatic chamber according to claim 1, wherein the metal wire rod 11A is irregularly rolled into the mixer 11.
んで混合し、混合ガスを温度コントロールユニット６の
設定に基き作動する加熱器12へ送給して加熱し、恒温試
験槽３へ送気すべく成す一方、恒温試験槽３の扉体3Aを
開いた際に圧縮空気、液体窒素、加熱器への加熱電流の
供給を夫々停止し、扉体3Aを閉じた際には前記停止を全
て解除し再作動すべく成した恒温槽の温度制御装置3. Compressed air and liquid nitrogen are sent to and mixed with a mixer 11, and a mixed gas is sent to and heated by a heater 12 which operates based on the setting of a temperature control unit 6, to a constant temperature test tank 3. While supplying air, the supply of compressed air, liquid nitrogen, and heating current to the heater are stopped when the door 3A of the constant temperature test tank 3 is opened, and when the door 3A is closed, the stop is performed. Temperature control device for constant temperature bath, which was designed to release all
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989135962U JP2507898Y2 (en) | 1989-11-22 | 1989-11-22 | Temperature controller for constant temperature bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989135962U JP2507898Y2 (en) | 1989-11-22 | 1989-11-22 | Temperature controller for constant temperature bath |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0374346U JPH0374346U (en) | 1991-07-25 |
| JP2507898Y2 true JP2507898Y2 (en) | 1996-08-21 |
Family
ID=31683193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989135962U Expired - Lifetime JP2507898Y2 (en) | 1989-11-22 | 1989-11-22 | Temperature controller for constant temperature bath |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2507898Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100928190B1 (en) | 2008-09-23 | 2009-11-25 | 동국대학교 산학협력단 | Particle size analyzing method of ice by dry freezing method and particle size analyzing device for the method |
| KR101458377B1 (en) * | 2013-10-24 | 2014-11-05 | 한국에너지기술연구원 | Thermostat Device for Preventing Supply Pressure Change of Fluid |
| WO2018225182A1 (en) * | 2017-06-07 | 2018-12-13 | シャープ株式会社 | Aging device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2737610C2 (en) * | 1977-08-20 | 1983-10-27 | Messer Griesheim Gmbh, 6000 Frankfurt | Process for the production of a protective gas for the heat treatment of ferrous metals |
| JPH0173337U (en) * | 1987-11-05 | 1989-05-17 | ||
| JPH01132240U (en) * | 1988-03-04 | 1989-09-07 |
-
1989
- 1989-11-22 JP JP1989135962U patent/JP2507898Y2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100928190B1 (en) | 2008-09-23 | 2009-11-25 | 동국대학교 산학협력단 | Particle size analyzing method of ice by dry freezing method and particle size analyzing device for the method |
| KR101458377B1 (en) * | 2013-10-24 | 2014-11-05 | 한국에너지기술연구원 | Thermostat Device for Preventing Supply Pressure Change of Fluid |
| WO2018225182A1 (en) * | 2017-06-07 | 2018-12-13 | シャープ株式会社 | Aging device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0374346U (en) | 1991-07-25 |
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