JP4362979B2

JP4362979B2 - Constant temperature and humidity device

Info

Publication number: JP4362979B2
Application number: JP2001022947A
Authority: JP
Inventors: 正志清水; 和弘松下; 直希小澤; 文則斉藤
Original assignee: Hitachi Appliances Inc
Current assignee: Hitachi Appliances Inc
Priority date: 2001-01-31
Filing date: 2001-01-31
Publication date: 2009-11-11
Anticipated expiration: 2021-01-31
Also published as: JP2002228203A

Description

【０００１】
【発明の属する技術分野】
本発明は、熱の移動を遮断する断熱材により閉鎖された試験槽内を恒温恒湿に保つ恒温恒湿装置に係り、特に、試験槽内の湿度を制御するために使用される加湿用給水を供給することに起因する試験槽内の温度および湿度の乱れを防止する手段に関する。
【０００２】
【従来の技術】
恒温恒湿装置では、試験槽内の湿度を制御するために、加湿器により加湿する必要がある。この加湿器内の水量は、一般に試験槽の外部に設置された水位検出器で検出した水位に基づいて制御する。
【０００３】
しかし、試験槽内の圧力は、試験槽内の温度湿度条件や加熱器などの作動状態により変化するので、試験槽内外に圧力差が生じた場合には、水位の検出が困難になる。
【０００４】
また、恒温恒湿装置の機能上扉の開閉が必要であり、扉を開けた際の加湿蒸気の急激な吹き出しなどを避ける目的からも、試験槽内外の圧力を平衡に保つための均圧口が必要となる。この均圧口から、湿度制御時に発生した加湿蒸気が試験槽内外の圧力差により試験槽外に排出されるので、手動給水の場合、試験担当者は、残水量を常時点検して水を補給する作業をしなければならなかった。
【０００５】
一方、加湿するための給水方法には、予め純水製造器で製造し貯蔵された純水を手動でタンクに供給する方法、水道水を純水器に供給し逐次製造された純水を手動でタンクに供給する方法、水道配管を純水製造装置と直結し純水製造装置と恒温恒湿装置と直結するする方法などがある。いずれの場合も、水位検出弁により水位制御しながら、タンクから湿度検出器の湿球温度計および加湿器に加湿用給水を供給する。
【０００６】
そのため、恒温恒湿装置に供給される水は一般に水温が低く、そのまま湿度検出器の湿球温度計および加湿器に供給した場合、一時的に湿度検出器および加湿器内の水温が下がり湿度も乱れる問題が発生していた。特に、給水と湿度検出器の湿球温度計内および加湿器内の水温との温度差が大きくなる高温高湿運転においては、その傾向が顕著であった。
【０００７】
なお、恒温恒湿装置の給排水回路の一例としては、特願昭６２−３２４０６３号公報に記載されたものがある。この従来例では、加湿水の排水回路が均圧口を兼ねており、加湿蒸気に含まれる水は、排水回路から排出されてしまうために、やはり定期的な水の補給が不可欠となる。
【０００８】
【発明が解決しようとする課題】
上記従来技術のように、恒温恒湿装置により長時間の連続試験を実行する時には水の定期的な補給が必要であった。また、補給される水は一般に低温なので、給水時には、恒温恒湿装置内の温度および湿度に乱れが生じていた。
【０００９】
さらに、タンク供給方式で長時間の連続試験を実行する場合は、水の定期的な補給が不可欠となっており、試験担当者は、水が消費されるたびにタンクを運搬しなければならず、長時間の連続試験においては、相当の労力を要する。
【００１０】
本発明の目的は、給水による恒温恒湿装置内の温度および湿度の一時的な乱れを防止し、加湿蒸気中の水を回収して再利用し給水の消費量を削減する手段を備えた恒温恒湿装置を提供することである。
【００１１】
【課題を解決するための手段】
本発明は、上記目的を達成するために、断熱材により閉鎖した試験槽内に温度検出器，湿度検出器，加熱器，加湿器，冷凍装置の蒸発器を備え、加熱器と冷凍装置の蒸発器とを作動させて試験槽内の温度および湿度を所定値に制御する恒温恒湿装置において、湿度検出器の湿球温度計および加湿器への加湿用給水を加熱してから供給する給水配管を設けた恒温恒湿装置を提案する。
【００１２】
本発明は、また、断熱材により閉鎖した試験槽内に温度検出器，湿度検出器，加熱器，加湿器，冷凍装置の蒸発器を備え、加熱器と冷凍装置の蒸発器とを作動させて試験槽内の温度および湿度を所定値に制御する恒温恒湿装置において、加湿時に試験槽内外の圧力差により試験槽外に排出される加湿蒸気で湿度検出器の湿球温度計および加湿器への加湿用給水を加熱してから供給する給水配管を設けた恒温恒湿装置を提案する。
【００１３】
前記給水配管は、恒温恒湿装置の均圧口に接続された蒸気誘導管の外面に密接させて蒸気と給水とを熱交換させることができる。
【００１４】
前記給水配管は、恒温恒湿装置の均圧口に接続された蒸気誘導管内に配置して蒸気と給水とを熱交換させてもよい。
【００１５】
これらの発明においては、加湿運転時、前記均圧口から試験槽外に排出される蒸気と湿度検出器および加湿器への給水とを熱交換させる。この熱交換により、給水は温度が高められた後、湿度検出器および加湿器に供給されるので、水温の低下が抑制され、湿度の乱れもなくなる。一方、従来は均圧口から試験槽外に排出されていた加湿蒸気が温度の低い給水により冷却されるため、蒸気の回収も容易となり、復水をタンクまたは加湿器に戻すと、長時間の加湿制御運転が可能となる。
【００１６】
本発明は、さらに、断熱材により閉鎖した試験槽内に温度検出器，湿度検出器，加熱器，加湿器，冷凍装置の蒸発器を備え、加熱器と冷凍装置の蒸発器とを作動させて試験槽内の温度および湿度を所定値に制御する恒温恒湿装置において、給水配管または給水タンクに設置した加熱器で湿度検出器の湿球温度計および加湿器への加湿用給水を加熱してから供給する給水配管を設けた恒温恒湿装置を提案する。
【００１７】
これらの一連の構造により、給水は加熱後に湿度検出湿器および加湿器に供給されるので、温度低下による湿度の乱れを防止できる。タンク供給方式の場合には、蒸発水は回収し再利用する結果、給水の消費量を大幅に削減でき、連続試験可能時間を延長できる。
【００１８】
【発明の実施の形態】
次に、図１ないし図５を参照して、本発明による恒温恒湿装置の実施形態を説明する。
【００１９】
【実施形態１】
図１は、本発明により蒸気誘導管４に密接して給水用配管３を配置したタンク給水方式恒温恒湿装置の実施形態１の系統構成を示す図である。
【００２０】
試験槽１は、内部に、槽内ファン６と、加熱器７と、冷凍装置の蒸発器８と、加湿器９と、湿度検出器１０とを備えている。加湿器９は、ヒータ９ａと受け皿９ｂとからなる。湿度検出器１０は、湿球ＷＢを有する湿球温度計１１を含んでいる。
【００２１】
試験槽１の外部には、給水タンク５が設置され、給水配管３により、給水電磁弁１５を介して、加湿器９に給水するようになっている。加湿器９の水量は、水位制御弁１４により制御される。すなわち、水位制御弁１４により、加湿器９の液面を検出し、給水タンク５から、給水電磁弁１５を介して、湿度制御用加湿器９に給水する。
【００２２】
一方、水位制御弁１２により、湿度検出器１０の液面を検出し、給水タンク５から、給水電磁弁１３を介して、湿球温度計１１の湿球ＷＢに給水する。
【００２３】
本実施形態１においては、加湿器９および湿球温度計１１の湿球ＷＢへの加湿用給水配管３と均圧口２に接続された蒸気誘導管４とを密着させて配置してあるので、試験槽１内への給水を加熱する一方、均圧口２から排出される加湿蒸気を凝縮させて回収できることになる。なお、均圧口２は、試験槽１内外の圧力を平衡に保つ役目を果たしている。
【００２４】
恒温恒湿装置では、槽内ファン６により試験槽１内の空気を循環させ、必要に応じて加熱器７，加湿器９，冷凍装置の蒸発器８を各々作動させ、湿度検出器１０により、試験槽１内の湿度を検出し、目的の温湿度に制御する。
【００２５】
ここで、加湿器９が作動し、試験槽１内の圧力が試験槽１外の圧力より高くなると、加湿器９で発生した加湿蒸気は、均圧口２から排出され、蒸気誘導管４の内部を通過し、大気中に放出される。
【００２６】
その際に、加湿蒸気が、露点温度以下になると、加湿蒸気内に含まれる水が凝縮して水滴となる。水滴となった水は、やがて重力により落下し、蒸気誘導管４先端の下側に設置された加湿器９の受け皿９ｂに入り、加湿用給水として再利用できる。
【００２７】
なお、給水用配管３を流れる給水は、蒸気誘導管４内の蒸気により加熱され、湿度検出器１０および加湿器９の受け皿９ｂに供給される。
【００２８】
このため、湿度検出器１０および加湿器９内の加湿水の温度低下がなくなり、それに伴う湿度低下も抑制される。
【００２９】
本実施形態１によれば、加熱器７，加湿器９，冷凍装置の蒸発器８を試験槽内に備えた恒温恒湿装置において、加湿器７の作動時に均圧口２から排出される加湿蒸気を蒸気誘導管４に誘導し、蒸気誘導管４に密接させた給水配管３と熱交換させるので、給水配管３内の給水を加熱して加湿器９と湿度検出器１０との温度低下を防止し、温度／湿度の乱れを抑制できる。
【００３０】
また、特に、手動で給水を補給する方式の長時間の連続試験においても、加湿蒸気を冷却回収し再利用するので、湿度制御用給水の消費量を少なくでき、長時間の連続運転が可能となり、水量を点検し補給する試験担当者の労力を大幅に削減できる。
【００３１】
【実施形態２】
図２は、本発明により蒸気誘導管４に密接して給水用配管３を配置した自動給水方式恒温恒湿装置の実施形態２の系統構成を示す図である。本実施形態２の自動給水方式では、給水タンク５０内の水位検出器５１により液面を検出し、図示しない水道または純水製造装置から、給水電磁弁１５を介して、給水タンク５０に自動給水する。
【００３２】
本実施形態２においても、実施形態１と同様に、給水用配管３を蒸気誘導管４に密着させてあるので、給水配管３内の給水の加熱の効率と蒸気誘導管４内の蒸気の冷却の効率とが高められる。
【００３３】
【実施形態３】
図３は、本発明により供給配管３または給水タンク５０に加熱器９を設置した恒温恒湿装置の実施形態３の系統構成を示す図である。給水の加熱源としては、加熱器１６を給水用配管３に設置する場合と、加熱器１７を給水タンク５０内に設置する場合とがある。加熱器１６と１７とを併設してもよい。さらに、実施形態１または実施形態２の給水配管３および蒸気誘導管の構造と実施形態３の加熱器１６または１７とを組合せることもできる。恒温恒湿装置いずれにも加熱器を設置する場合の実施形態３であり、湿度検出器１０および加湿器９への給水を加熱後に供給でき、図１と同様な効果を得ることが可能である。
【００３４】
【実施形態４】
図４は、本発明により給水配管を蒸気誘導管の外面に密接させる実施形態の構造を示す図である。蒸気誘導管４の外周部を凹凸状に形成し、給水用配管３を蒸気誘導管４の凹部４ａに密着させる。本実施形態４においては、給水用配管３を蒸気誘導管４の凹部４ａに密着させてあるので、給水配管３内の給水の加熱の効率と蒸気誘導管４内の蒸気の冷却の効率とが高められる。
【００３５】
【実施形態５】
図５は、本発明により給水配管３を蒸気誘導管４内に配置した実施形態の構造を示す図である。給水配管３を蒸気誘導管４内に配置した本実施形態５においても、実施形態４と同様の効果が得られる。
【００３６】
なお、上記実施形態の他に、給水用配管３が試験槽１内を通過するように配管し、加湿用給水を試験槽１内とほぼ同温まで加熱してから湿度検出器１０および加湿器９に給水する方法も一応考えられる。
【００３７】
しかし、試験槽１内の熱容量との関係で、給水による恒温恒湿装置内の温度および湿度の一時的な乱れが生ずる場合もあり、本発明の目的を十分には達成できないので、ここでは採用しなかった。
【００３８】
【発明の効果】
本発明によれば、加熱器，加湿器，冷凍装置の蒸発器を試験槽内に備えた恒温恒湿装置において、加湿器の作動時に均圧口から排出される加湿蒸気を蒸気誘導管に誘導し、蒸気誘導管に密接させた給水配管と熱交換させるので、給水配管内の給水を加熱して湿度検出器と加湿器の温度低下を防止し、温度／湿度の乱れを抑制できる。
【００３９】
また、特に、手動で給水を補給する方式の長時間の連続試験においても、加湿蒸気を冷却回収し再利用するので、湿度制御用給水の消費量を少なくでき、長時間の連続運転が可能となり、水量を点検し補給する試験担当者の労力を大幅に削減できる。
【図面の簡単な説明】
【図１】本発明により蒸気誘導管に密接して給水用配管を配置したタンク給水方式恒温恒湿装置の実施形態１の系統構成を示す図である。
【図２】本発明により蒸気誘導管に密接して給水用配管を配置した自動給水方式恒温恒湿装置の実施形態２の系統構成を示す図である。
【図３】本発明により供給配管または給水タンクに加熱器を設置した恒温恒湿装置の実施形態３の系統構成を示す図である。
【図４】本発明により給水配管を蒸気誘導管の外面に密接させる実施形態４の構造を示す図である。
【図５】本発明により給水配管を蒸気誘導管内に配置した実施形態５の構造を示す図である。
【符号の説明】
１試験槽
２均圧口
３給水配管
４蒸気誘導管
４ａ凹部
４ｂ凸部
５給水タンク
６槽内ファン
７加熱器
８冷凍装置の蒸発器
９加湿器
９ａヒータ
９ｂ受け皿
１０湿度検出器
１１湿球温度計
１２水位制御弁
１３給水電磁弁
１４水位制御弁
１５給水電磁弁
１６加熱器
１７加熱器
５０給水タンク
５１水位検出器
ＷＢ湿球温度計１１の湿球[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a constant temperature and humidity device that maintains a constant temperature and humidity in a test chamber closed by a heat insulating material that blocks heat transfer, and in particular, a humidifying water supply used to control the humidity in the test chamber. The present invention relates to a means for preventing the temperature and humidity in the test chamber from being disturbed due to supplying water.
[0002]
[Prior art]
In the thermo-hygrostat, it is necessary to humidify with a humidifier in order to control the humidity in the test chamber. The amount of water in the humidifier is generally controlled based on the water level detected by a water level detector installed outside the test tank.
[0003]
However, since the pressure in the test tank changes depending on the temperature and humidity conditions in the test tank and the operating state of the heater, it is difficult to detect the water level when a pressure difference occurs inside and outside the test tank.
[0004]
In addition, the function of the temperature and humidity control device requires the opening and closing of the door, and the pressure equalization port is used to keep the pressure inside and outside the test chamber in equilibrium for the purpose of avoiding sudden blowout of humidified steam when the door is opened. Is required. From this pressure equalization port, humidified steam generated during humidity control is discharged outside the test tank due to the pressure difference between the inside and outside of the test tank, so in the case of manual water supply, the person in charge of the test constantly checks the remaining water volume and replenishes water Had to work.
[0005]
On the other hand, the water supply method for humidification includes a method of manually supplying pure water previously manufactured and stored in a pure water generator to a tank, and manually supplying purified water sequentially supplied by supplying tap water to the water purifier. There are a method of supplying water to a tank, a method of directly connecting a water pipe to a pure water production device and a pure water production device and a constant temperature and humidity device. In either case, the water supply for humidification is supplied from the tank to the wet bulb thermometer of the humidity detector and the humidifier while controlling the water level by the water level detection valve.
[0006]
Therefore, the water supplied to the constant temperature and humidity device is generally low in temperature, and if it is supplied to the wet bulb thermometer and humidifier of the humidity detector as it is, the water temperature in the humidity detector and humidifier temporarily decreases and the humidity also decreases. There was a disturbing problem. In particular, the tendency was remarkable in the high temperature and high humidity operation in which the temperature difference between the water supply and the water temperature in the wet bulb thermometer of the humidity detector and in the humidifier becomes large.
[0007]
An example of a water supply / drainage circuit of a constant temperature and humidity device is described in Japanese Patent Application No. 62-324063. In this conventional example, the humidified water drain circuit also serves as a pressure equalizing port, and the water contained in the humidified steam is discharged from the drain circuit, so that periodic replenishment of water is essential.
[0008]
[Problems to be solved by the invention]
As in the prior art described above, when a continuous test for a long time was performed using a constant temperature and humidity device, periodic replenishment of water was necessary. In addition, since the water to be replenished is generally low in temperature, the temperature and humidity in the constant temperature and humidity device are disturbed during water supply.
[0009]
In addition, when performing long-term continuous tests using the tank supply method, regular replenishment of water is essential, and the tester must transport the tank each time water is consumed. In a continuous test for a long time, considerable labor is required.
[0010]
An object of the present invention is to prevent the temperature and humidity in the constant temperature and humidity device due to water supply from being temporarily disturbed, and to recover the water in the humidified steam and reuse it to reduce the consumption of the water supply. It is to provide a humidity control device.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present invention includes a temperature detector, a humidity detector, a heater, a humidifier, and an evaporator of a refrigeration apparatus in a test chamber closed with a heat insulating material, and evaporates the heater and the refrigeration apparatus. In a constant temperature and humidity control device that controls the temperature and humidity in the test chamber to predetermined values by operating the test chamber, the water supply pipe that supplies the humidifier water supply to the humidifier thermometer and humidifier after heating We propose a constant temperature and humidity device with
[0012]
The present invention also includes a temperature detector, a humidity detector, a heater, a humidifier, and an evaporator of a refrigeration apparatus in a test chamber closed by a heat insulating material, and the heater and the evaporator of the refrigeration apparatus are operated. In a constant temperature and humidity controller that controls the temperature and humidity in the test chamber to the specified values, the humidified vapor discharged outside the test chamber due to the pressure difference between the inside and outside of the test chamber during humidification to the wet bulb thermometer and humidifier of the humidity detector We propose a constant temperature and humidity device with a water supply pipe that supplies water after heating the humidifying water supply.
[0013]
The water supply pipe can be in close contact with the outer surface of the steam guide pipe connected to the pressure equalization port of the constant temperature and humidity device to exchange heat between the steam and the water supply.
[0014]
The water supply pipe may be arranged in a steam guide pipe connected to a pressure equalizing port of a constant temperature and humidity apparatus to exchange heat between the steam and the water supply.
[0015]
In these inventions, during the humidification operation, heat exchange is performed between the steam discharged from the pressure equalizing port to the outside of the test tank and the water supplied to the humidity detector and the humidifier. By this heat exchange, the temperature of the water supply is raised and then supplied to the humidity detector and the humidifier, so that a decrease in the water temperature is suppressed and there is no disturbance in humidity. On the other hand, since the humidified steam that has been discharged from the pressure equalizing port to the outside of the test tank is cooled by the low temperature water supply, it is easy to collect the steam.If the condensate is returned to the tank or humidifier, it will take a long time. Humidification control operation is possible.
[0016]
The present invention further includes a temperature detector, a humidity detector, a heater, a humidifier, and an evaporator of a refrigeration apparatus in a test chamber closed with a heat insulating material, and the heater and the evaporator of the refrigeration apparatus are operated. In a constant temperature and humidity device that controls the temperature and humidity in the test tank to the specified values, the humidifier thermometer and the humidifier water supply to the humidifier are heated by a heater installed in the water supply pipe or water tank. We propose a constant temperature and humidity device with a water supply pipe to be supplied from the factory.
[0017]
With these series of structures, the water supply is supplied to the humidity detecting humidifier and the humidifier after heating, so that the disturbance of humidity due to a temperature drop can be prevented. In the case of the tank supply system, as a result of collecting and reusing the evaporated water, the consumption of water supply can be greatly reduced, and the continuous testable time can be extended.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Next, with reference to FIG. 1 thru | or FIG. 5, embodiment of the constant temperature and humidity apparatus by this invention is described.
[0019]
Embodiment 1
FIG. 1 is a diagram showing a system configuration of Embodiment 1 of a tank water supply type constant temperature and humidity apparatus in which a water supply pipe 3 is arranged in close contact with a steam guide pipe 4 according to the present invention.
[0020]
The test tank 1 includes an internal fan 6, a heater 7, an evaporator 8 of a refrigeration apparatus, a humidifier 9, and a humidity detector 10. The humidifier 9 includes a heater 9a and a tray 9b. The humidity detector 10 includes a wet bulb thermometer 11 having a wet bulb WB.
[0021]
A water supply tank 5 is installed outside the test tank 1, and water is supplied to the humidifier 9 through the water supply electromagnetic valve 15 by the water supply pipe 3. The amount of water in the humidifier 9 is controlled by the water level control valve 14. That is, the liquid level of the humidifier 9 is detected by the water level control valve 14, and water is supplied from the water supply tank 5 to the humidity control humidifier 9 through the water supply electromagnetic valve 15.
[0022]
On the other hand, the water level control valve 12 detects the liquid level of the humidity detector 10 and supplies water from the water supply tank 5 to the wet bulb WB of the wet bulb thermometer 11 through the water supply electromagnetic valve 13.
[0023]
In the first embodiment, the humidifying water supply pipe 3 to the wet bulb WB of the humidifier 9 and the wet bulb thermometer 11 and the steam guide pipe 4 connected to the pressure equalizing port 2 are arranged in close contact with each other. While the feed water into the test tank 1 is heated, the humidified steam discharged from the pressure equalizing port 2 can be condensed and recovered. The pressure equalizing port 2 serves to keep the pressure inside and outside the test tank 1 in equilibrium.
[0024]
In the constant temperature and humidity device, the air in the test chamber 1 is circulated by the in-tank fan 6, and the heater 7, the humidifier 9, and the evaporator 8 of the refrigeration device are operated as necessary. The humidity in the test tank 1 is detected and controlled to the target temperature and humidity.
[0025]
Here, when the humidifier 9 is activated and the pressure in the test tank 1 becomes higher than the pressure outside the test tank 1, the humidified steam generated in the humidifier 9 is discharged from the pressure equalizing port 2, It passes through the interior and is released into the atmosphere.
[0026]
At that time, when the humidified steam becomes the dew point temperature or less, the water contained in the humidified steam is condensed into water droplets. The water that has become water droplets eventually falls due to gravity, enters the tray 9b of the humidifier 9 installed below the tip of the steam guide tube 4, and can be reused as humidifying water supply.
[0027]
The feed water flowing through the feed water pipe 3 is heated by the steam in the steam guide pipe 4 and supplied to the humidity detector 10 and the tray 9 b of the humidifier 9.
[0028]
For this reason, the temperature drop of the humidified water in the humidity detector 10 and the humidifier 9 is eliminated, and the accompanying humidity drop is also suppressed.
[0029]
According to the first embodiment, in the constant temperature and humidity device provided with the heater 7, the humidifier 9, and the evaporator 8 of the refrigeration apparatus in the test tank, the humidification discharged from the pressure equalizing port 2 when the humidifier 7 is operated. Since the steam is guided to the steam guide pipe 4 and heat exchange is performed with the water supply pipe 3 in close contact with the steam guide pipe 4, the temperature of the humidifier 9 and the humidity detector 10 is decreased by heating the water supply in the water supply pipe 3. To prevent temperature / humidity disturbance.
[0030]
In particular, even in long-term continuous tests where water supply is manually replenished, humidified steam is cooled and recovered and reused, reducing the amount of water used for humidity control and enabling continuous operation for long periods of time. This greatly reduces the labor of testing personnel who check and replenish water.
[0031]
Embodiment 2
FIG. 2 is a diagram showing a system configuration of Embodiment 2 of the automatic water supply type constant temperature and humidity device in which the water supply pipe 3 is arranged in close contact with the steam guide pipe 4 according to the present invention. In the automatic water supply system of the second embodiment, the liquid level is detected by the water level detector 51 in the water supply tank 50, and the water supply tank 50 is automatically supplied with water from the water supply or pure water production apparatus (not shown) via the water supply electromagnetic valve 15. To do.
[0032]
Also in the second embodiment, as in the first embodiment, since the water supply pipe 3 is in close contact with the steam induction pipe 4, the efficiency of heating the water supply in the water supply pipe 3 and the cooling of the steam in the steam induction pipe 4 Efficiency.
[0033]
Embodiment 3
FIG. 3 is a diagram showing a system configuration of Embodiment 3 of the constant temperature and humidity apparatus in which the heater 9 is installed in the supply pipe 3 or the water tank 50 according to the present invention. As a heating source of water supply, there are a case where the heater 16 is installed in the water supply pipe 3 and a case where the heater 17 is installed in the water supply tank 50. Heaters 16 and 17 may be provided side by side. Furthermore, the structure of the water supply pipe 3 and the steam induction pipe of the first or second embodiment and the heater 16 or 17 of the third embodiment can be combined. This is a third embodiment in which a heater is installed in any of the constant temperature and humidity devices, and the water supply to the humidity detector 10 and the humidifier 9 can be supplied after heating, and the same effect as in FIG. 1 can be obtained. .
[0034]
Embodiment 4
FIG. 4 is a diagram showing a structure of an embodiment in which the water supply pipe is brought into close contact with the outer surface of the steam guide pipe according to the present invention. The outer periphery of the steam guide pipe 4 is formed in an uneven shape, and the water supply pipe 3 is brought into close contact with the recess 4 a of the steam guide pipe 4. In the fourth embodiment, since the water supply pipe 3 is brought into close contact with the recess 4a of the steam guide pipe 4, the efficiency of heating the feed water in the water feed pipe 3 and the efficiency of cooling the steam in the steam guide pipe 4 are increased. Enhanced.
[0035]
Embodiment 5
FIG. 5 is a diagram showing a structure of an embodiment in which the water supply pipe 3 is arranged in the steam guide pipe 4 according to the present invention. In the fifth embodiment in which the water supply pipe 3 is disposed in the steam guide pipe 4, the same effect as in the fourth embodiment can be obtained.
[0036]
In addition to the above embodiment, the water supply pipe 3 is piped so as to pass through the test tank 1, and the humidity detector 10 and the humidifier are heated after heating the humidified water supply to substantially the same temperature as in the test tank 1. A method of supplying water to 9 is also conceivable.
[0037]
However, there is a case where the temperature and humidity in the constant temperature and humidity device due to the water supply may be temporarily disturbed due to the heat capacity in the test tank 1, and the purpose of the present invention cannot be sufficiently achieved. I did not.
[0038]
【The invention's effect】
According to the present invention, in a constant temperature and humidity device equipped with a heater, a humidifier, and an evaporator of a refrigeration apparatus in a test tank, humidified steam discharged from a pressure equalizing port when the humidifier is operated is guided to a steam guide pipe. In addition, since heat exchange is performed with the water supply pipe that is in close contact with the steam guide pipe, the temperature of the humidity detector and the humidifier can be prevented by heating the water supply in the water supply pipe and the temperature / humidity disturbance can be suppressed.
[0039]
In particular, even in long-term continuous tests where water supply is manually replenished, humidified steam is cooled and recovered and reused, reducing the amount of water used for humidity control and enabling continuous operation for long periods of time. This greatly reduces the labor of testing personnel who check and replenish water.
[Brief description of the drawings]
FIG. 1 is a diagram showing a system configuration of Embodiment 1 of a tank water supply type constant temperature and humidity apparatus in which a water supply pipe is arranged in close contact with a steam guide pipe according to the present invention.
FIG. 2 is a diagram showing a system configuration of Embodiment 2 of an automatic water supply type constant temperature and humidity device in which a water supply pipe is arranged in close contact with a steam guide pipe according to the present invention.
FIG. 3 is a diagram showing a system configuration of a third embodiment of a constant temperature and humidity apparatus in which a heater is installed in a supply pipe or a water supply tank according to the present invention.
FIG. 4 is a view showing a structure of a fourth embodiment in which a water supply pipe is brought into close contact with an outer surface of a steam guide pipe according to the present invention.
FIG. 5 is a diagram showing a structure of a fifth embodiment in which a water supply pipe is arranged in a steam guide pipe according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Test tank 2 Pressure equalization port 3 Water supply piping 4 Steam induction pipe 4a Concave part 4b Convex part 5 Water supply tank 6 In-tank fan 7 Heater 8 Refrigerating device evaporator 9 Humidifier 9a Heater 9b Saucepan 10 Humidity detector 11 Wet bulb temperature Total 12 Water level control valve 13 Water supply electromagnetic valve 14 Water level control valve 15 Water supply electromagnetic valve 16 Heater 17 Heater 50 Water supply tank 51 Water level detector WB Wet bulb of wet bulb thermometer 11

Claims

A temperature detector, a humidity detector, a heater, a humidifier, and an evaporator of a refrigeration apparatus are provided in a test tank closed by a heat insulating material, and the heater and the evaporator of the refrigeration apparatus are operated to operate in the test tank. In the constant temperature and humidity device that controls the temperature and humidity of the
A water supply pipe was provided to supply after humidifying the thermometer wet bulb thermometer and the humidifier water supply to the humidifier with humidified steam discharged outside the test tank due to a pressure difference inside and outside the test tank during humidification A constant temperature and humidity device.

The constant temperature and humidity device according to claim 1 ,
A constant temperature and humidity device characterized in that the water supply pipe is brought into close contact with an outer surface of a steam induction pipe connected to a pressure equalizing port of the constant temperature and humidity device.

The constant temperature and humidity device according to claim 1 ,
The constant temperature and humidity device, wherein the water supply pipe is disposed in a steam induction pipe connected to a pressure equalizing port of the constant temperature and humidity device.