JP3102507B2 - Saturated air generator - Google Patents
Saturated air generatorInfo
- Publication number
- JP3102507B2 JP3102507B2 JP03230600A JP23060091A JP3102507B2 JP 3102507 B2 JP3102507 B2 JP 3102507B2 JP 03230600 A JP03230600 A JP 03230600A JP 23060091 A JP23060091 A JP 23060091A JP 3102507 B2 JP3102507 B2 JP 3102507B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- air
- container
- temperature
- saturated
- 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
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- Control Of Non-Electrical Variables (AREA)
- Sampling And Sample Adjustment (AREA)
- Air Humidification (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は恒温恒湿器等の環境試験
装置その他湿度制御が要求される分野において、目標湿
度を、いわゆる二温度法に基づいて得るための飽和空気
発生装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a saturated air generator for obtaining a target humidity based on a so-called two-temperature method in an environment test apparatus such as a thermo-hygrostat and other fields requiring humidity control.
【０００２】[0002]
【従来の技術】二温度法によると、飽和空気発生装置で
得た所定温度の飽和空気を、例えば恒温恒湿槽等の所定
温度に制御された空間に導き、それによって該空間にお
いて目標とする温湿度雰囲気を得る。また、飽和空気を
恒温恒湿槽等の空間に導入するに先立って、適当な手段
で所定の温度に曝し、それによって目標温湿度の空気と
したのち、これを前記空間へ供給することもある。2. Description of the Related Art According to a two-temperature method, saturated air at a predetermined temperature obtained by a saturated air generator is guided to a space controlled at a predetermined temperature, such as a constant temperature / humidity chamber, and thereby is targeted in the space. Get temperature and humidity atmosphere. Prior to introducing the saturated air into a space such as a constant temperature / humidity chamber, the air may be exposed to a predetermined temperature by an appropriate means to obtain air having a target temperature and humidity, and then supplied to the space. .
【０００３】このように目標湿度を得るために利用され
る飽和空気発生装置は、通常、容器に収容した水を所定
温度の液水又は凍結水（氷）とし、空気を該容器に、前
記水に接触させつつ通過させて目標露点又は霜点の飽和
空気を得るように構成されている。ここで露点、霜点と
いうのは、前記容器内の水の状態（液体か凍結水（氷）
か）によってその違いができる。水温が同じであって
も、水の状態によってその飽和水蒸気圧が変わるため、
液体のときは露点、氷のときは霜点としてとらえる。[0003] The saturated air generator used to obtain the target humidity as described above usually converts the water contained in the container into liquid water or frozen water (ice) at a predetermined temperature, and supplies the air to the container with the water. And saturated air at the target dew point or frost point is obtained by passing the air while contacting the air. Here, the dew point and the frost point refer to the state of the water in the container (liquid or frozen water (ice)
Can make that difference. Even if the water temperature is the same, because the saturated steam pressure changes depending on the state of the water,
The dew point for liquids and the frost point for ice.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、水、特
に不純物含有量の少ないものは、氷点以下であっても過
冷却された液体の状態と、凍った状態（氷）の二つの状
態がある。例えば、蒸留水では、０度以下になっても直
ちに氷結せず、−２０〜−３０℃程度で凍り始める。However, water, especially those having a low impurity content, has two states, that is, a supercooled liquid state and a frozen state (ice) even when the temperature is below the freezing point. For example, distilled water does not freeze immediately even when the temperature becomes 0 ° C. or less, and starts to freeze at about −20 to −30 ° C.
【０００５】従って、従来、目標霜点の飽和空気を得よ
うとするときには、前記容器内水温を、水が完全に氷結
すると考えられる温度（蒸留水の場合は約−３０℃）ま
で低下させてから、任意の氷温度に制御していた。その
ため、水温降下制御に時間がかかった。さらに、例えば
使用水が蒸留水の場合、経験上、−３０℃以下に降下さ
せることで完全氷結したと判断しているものの、実際に
どのような状態か確かめる方法はなく、曖昧であった。Therefore, conventionally, when trying to obtain saturated air at the target frost point, the water temperature in the vessel is lowered to a temperature at which the water is considered to be completely frozen (about -30 ° C. in the case of distilled water). From, was controlled to any ice temperature. Therefore, it took time to control the water temperature drop. Furthermore, for example, when the used water is distilled water, it has been empirically determined that the temperature was lowered to −30 ° C. or less, but it was completely frozen. However, there was no method to confirm the actual state, and it was ambiguous.
【０００６】そこで本発明は、容器に収容した水を所定
温度の液水又は凍結水とし、空気を該容器に、前記水に
接触させつつ通過させて目標露点又は霜点の飽和空気を
得る飽和空気発生装置であって、前記容器内の水の状態
（液水か凍結水（氷）か）を正確に知ることができ、そ
れによって目標霜点の飽和空気を得ようとするときの水
温降下に要する時間を短縮することができ、また、同じ
温度における水について、露点としてとらえるべきか、
霜点としてとらえるべきかを容易に判断してそのときの
正確な飽和水蒸気圧を知ることができる飽和空気発生装
置を提供することを目的とする。Accordingly, the present invention provides a method for producing saturated water having a target dew point or frost point by converting the water contained in a container into liquid water or frozen water at a predetermined temperature and passing air through the container while contacting the water. An air generator, which is capable of accurately knowing the state of water (liquid water or frozen water (ice)) in the container, and thereby reducing the water temperature when trying to obtain saturated air at a target frost point. Time should be reduced, and water at the same temperature should be taken as a dew point,
It is an object of the present invention to provide a saturated air generator capable of easily determining whether to capture a saturated frost point and knowing an accurate saturated steam pressure at that time.
【０００７】[0007]
【課題を解決するための手段】本発明は前記目的に従
い、容器に収容した水を所定温度の液水又は凍結水と
し、空気を該容器に、前記水に接触させつつ通過させて
目標露点又は霜点の飽和空気を得る飽和空気発生装置に
おいて、前記容器内の水位レベルより下方で開口する空
気導入管を設けるとともに、該管に空気流れの有無を検
出する手段を接続したことを特徴とする飽和空気発生装
置を提供するものである。According to the present invention, in accordance with the above object, the water contained in a container is converted into liquid water or frozen water at a predetermined temperature, and air is passed through the container while contacting the water, thereby achieving a target dew point or freezing point. In a saturated air generator for obtaining saturated air having a frost point, an air introduction pipe that opens below the water level in the container is provided, and a means for detecting the presence or absence of air flow is connected to the pipe. A saturated air generator is provided.
【０００８】前記空気流れの有無を検出する手段として
は、空気導入管中の空気圧を検出する圧力センサ、空気
導入管中の空気流量を測定する流量計等が考えられる。
圧力センサを用いるときは、そのセンサによる検出圧力
が予め定めた値より高いか否か等によって空気流の有無
を知ることができ、流量計の場合は、それによって測定
される流量が予め定めた値より多いか否か等によって空
気流の有無を知ることができる。As means for detecting the presence or absence of the air flow, a pressure sensor for detecting the air pressure in the air inlet pipe, a flow meter for measuring the air flow rate in the air inlet pipe, and the like can be considered.
When using a pressure sensor, the presence or absence of an air flow can be known by whether or not the pressure detected by the sensor is higher than a predetermined value, and in the case of a flow meter, the flow rate measured thereby is predetermined. The presence / absence of the air flow can be known based on whether the value is larger than the value.
【０００９】前記空気導入管への空気の供給は常時行わ
れてもよいが、電磁弁等適当な弁の開閉により、前記容
器内の水が凍結しているか否かを判断したいときだけ供
給してもよい。また、空気導入管に供給する空気は、飽
和空気を得るために前記容器に通過させる空気流から分
流させたものでもよいし、別途供給されるものでもよ
い。The supply of air to the air introduction pipe may be performed at all times, but is only performed when it is desired to determine whether or not the water in the container is frozen by opening and closing an appropriate valve such as a solenoid valve. You may. Further, the air supplied to the air introduction pipe may be a stream separated from an air stream passed through the container to obtain saturated air, or may be supplied separately.
【００１０】[0010]
【作用】本発明装置によると、装置の容器における水が
凍結前のときは、空気導入管からこの水中へ供給される
空気は、該水中へ放出され、従って空気導入管に空気が
流れる。しかし、容器内水が凍結すると、空気導入管へ
空気が供給されても、該管中の空気流は停止し、管中圧
力が上昇する。According to the device of the present invention, when the water in the container of the device is not frozen, the air supplied into the water from the air inlet tube is discharged into the water, and the air flows through the air inlet tube. However, when the water in the container freezes, even if air is supplied to the air introduction tube, the air flow in the tube stops, and the pressure in the tube increases.
【００１１】従って、この空気流の有無が前記空気流の
有無を検出する手段により検出されることで、水の状態
が容易、正確に把握され、露点としてとらえるべきか、
霜点としてとらえるべきかの判断が可能となる。Therefore, the presence or absence of the air flow is detected by the means for detecting the presence or absence of the air flow, so that the state of the water can be easily and accurately grasped and should be taken as the dew point.
It is possible to determine whether to capture the frost point.
【００１２】[0012]
【実施例】以下、本発明の一実施例を図１を参照して説
明する。図１は一実施例の概略構成を、恒温恒湿器及び
乾燥気体発生装置等と共に示す図である。この飽和空気
発生装置Ａは、水を所定水位レベルに収容する容器１を
備え、該容器には水位レベルＬまで水Ｗが収容される。
容器１は冷却器、加熱器を含む温度制御装置１０により
温度制御される液体１２を収容した恒温槽１３に納めら
れており、水Ｗを所定温度に制御できる。An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a diagram showing a schematic configuration of one embodiment together with a thermo-hygrostat, a dry gas generator, and the like. The saturated air generator A includes a container 1 for storing water at a predetermined water level, and the container W stores water W up to a water level L.
The container 1 is housed in a thermostat 13 containing a liquid 12 whose temperature is controlled by a temperature controller 10 including a cooler and a heater, and can control the water W to a predetermined temperature.
【００１３】容器１の気相部１１は、一方で、配管２に
よって乾燥空気発生装置５に接続されており、該配管２
には流量計２１が接続されている。容器１の気相部１１
は、他方で、配管３により恒温恒湿器６の試験槽６１に
接続されている。試験槽６１は恒温槽６２に納められて
おり、槽６２には液体６３が有り、これが温度制御装置
６４にて温度制御されることで、槽６１の温度が制御さ
れる。On the other hand, the gas phase section 11 of the container 1 is connected to a dry air generator 5 by a pipe 2.
Is connected to a flow meter 21. Gas phase part 11 of container 1
On the other hand, is connected to the test tank 61 of the thermo-hygrostat 6 by the pipe 3. The test tank 61 is housed in a thermostat 62, and the tank 62 has a liquid 63. The temperature of the liquid 63 is controlled by a temperature controller 64, so that the temperature of the tank 61 is controlled.
【００１４】前記乾燥空気を供給する配管２には流量計
２１の下流側で空気導入管４が分岐接続され、該管４の
自由端は容器１中の水位レベルＬより下方まで延び、そ
こに開口４０している。管４の途中には電磁弁４１及び
管４中の気体圧力を検出する圧力センサ４２が接続され
ている。この飽和空気発生装置Ａによると、容器１中の
水Ｗが温度制御装置１０の操作によって所定温度まで降
下せしめられる。目標露点の飽和空気を得ようとすると
きには、該水Ｗは凍結しない状態で目標温度にまで降下
せしめられ、その状態で乾燥空気発生装置５から乾燥空
気が所定流量、容器１内に供給され、該容器内に供給さ
れた空気は水Ｗに接して移動しつつ低露点の飽和空気と
なって配管３から試験槽６１に供給される。試験槽６１
に供給された飽和空気は該試験槽が予め所定の温度に制
御されていることにより、ここで目標の温度湿度が発生
することになる。An air introduction pipe 4 is connected to the pipe 2 for supplying the dry air downstream of a flow meter 21 and has a free end extending below the water level L in the vessel 1. An opening 40 is provided. An electromagnetic valve 41 and a pressure sensor 42 for detecting a gas pressure in the pipe 4 are connected in the middle of the pipe 4. According to the saturated air generator A, the water W in the container 1 is lowered to a predetermined temperature by operating the temperature controller 10. When trying to obtain the saturated air at the target dew point, the water W is lowered to the target temperature without freezing, and in that state, dry air is supplied from the dry air generator 5 to the container 1 at a predetermined flow rate, The air supplied into the container moves into contact with the water W and becomes saturated air with a low dew point while being supplied to the test tank 61 from the pipe 3. Test tank 61
The target temperature and humidity are generated here because the saturated air supplied to the test tank is controlled to a predetermined temperature in advance.
【００１５】また、目標霜点の飽和空気を得ようとする
ときには、容器１内の水Ｗは予め定めた温度に凍結さ
れ、乾燥空気発生装置５から所定の流量で供給されてき
た乾燥空気はこの凍結水（氷）の表面に接しつつ容器１
内を通過することで所定霜点の飽和空気となり、配管３
から試験槽６１に供給される。一方、試験槽６１が予め
所定の温度に制御されていることと相俟って該試験槽に
目標の温度湿度が発生する。In order to obtain saturated air at the target frost point, the water W in the container 1 is frozen at a predetermined temperature, and the dry air supplied from the dry air generator 5 at a predetermined flow rate is Container 1 while contacting the surface of this frozen water (ice)
Passing through the inside, it becomes saturated air at a predetermined frost point,
Is supplied to the test tank 61. On the other hand, in combination with the fact that the test tank 61 is controlled to a predetermined temperature in advance, a target temperature and humidity are generated in the test tank.
【００１６】飽和空気を発生させるにあたり、容器１内
の水蒸気圧を知ろうとする場合、容器１中の水Ｗの状態
（液体か氷か）を知らなければならないが、これは空気
導入管４における電磁弁４１を開いて、圧力センサ４２
によって検出される圧力が予め定めた圧力よりも小さい
か否かによって判断することができる。即ち、圧力セン
サ４２によって検出される圧力が予め定めた値よりも小
さいということは、水Ｗが液体の状態であり、該センサ
によって検出される圧力が予め定めた値以上のときは水
Ｗが凍結している状態を示している。In order to generate the saturated air, in order to know the water vapor pressure in the container 1, it is necessary to know the state of the water W in the container 1 (liquid or ice). Opening the solenoid valve 41, the pressure sensor 42
Can be determined based on whether or not the pressure detected is smaller than a predetermined pressure. That is, the fact that the pressure detected by the pressure sensor 42 is smaller than a predetermined value means that the water W is in a liquid state, and when the pressure detected by the sensor is equal to or more than the predetermined value, the water W This shows a frozen state.
【００１７】即ち、センサで検出される圧力が予め定め
た値より小さいということは、管４中に空気流があり、
空気流があるということは管４の開口４０から空気が放
出され得る状態、即ち、水Ｗは液体の状態であることを
示している。一方、圧力センサ４２によって検出される
圧力が予め定めた値以上ということは、電磁弁４１を開
いて空気の供給が行われているにも拘らず管４に空気流
がないことを示し、空気流がないということは容器１中
の水Ｗが凍結していて管４の開口４０から空気の放出が
行われないということを意味している。That is, the fact that the pressure detected by the sensor is smaller than a predetermined value means that there is an air flow in the pipe 4,
The presence of the air flow indicates that air can be released from the opening 40 of the tube 4, that is, the water W is in a liquid state. On the other hand, the fact that the pressure detected by the pressure sensor 42 is equal to or greater than the predetermined value indicates that there is no air flow in the pipe 4 even though the solenoid valve 41 is opened and air is supplied. The absence of a flow means that the water W in the container 1 is frozen and no air is released from the opening 40 of the tube 4.
【００１８】従って、管４における空気流の有無を知る
ことによって容器１中の水Ｗの状態を知り、露点として
とらえるべきか、霜点としてとらえるべきかを容易、且
つ、正確に随時判断することができる。また、目標霜点
の飽和空気を得ようとする場合、容器１中の水Ｗは凍結
させなければならないが、これが凍結したか否かは、電
磁弁４１を随時開き、管４中に空気流があるか否かを見
ることにより、水Ｗの凍結を従来よりも速く、且つ、正
確に知ることができる。水Ｗが凍結したことが確認され
た後は、該凍結水の温度を所定温度に制御し、目標霜点
の飽和空気を容易に得ることができる。Therefore, the state of the water W in the container 1 is known by knowing the presence or absence of the air flow in the pipe 4, and it is easy and accurate to judge at any time whether it should be taken as a dew point or a frost point. Can be. In order to obtain saturated air at the target frost point, the water W in the container 1 must be frozen. Whether or not the water W has frozen is determined by opening the solenoid valve 41 at any time, By checking whether or not there is, it is possible to know the freezing of the water W faster and more accurately than before. After it is confirmed that the water W is frozen, the temperature of the frozen water is controlled to a predetermined temperature, and saturated air at the target frost point can be easily obtained.
【００１９】[0019]
【発明の効果】以上説明したように本発明によると、容
器に収容した水を所定温度の液水又は凍結水とし、空気
を該容器に、前記水に接触させつつ通過させて目標露点
又は霜点の飽和空気を得る飽和空気発生装置において、
前記容器内の水の状態（液水か凍結水（氷）か）を正確
に知ることができ、それによって目標霜点の飽和空気を
得ようとするときの水温降下に要する時間を短縮するこ
とができ、また、同じ温度における水について、露点と
してとらえるべきか、霜点としてとらえるべきかを容易
に判断してそのときの正確な飽和水蒸気圧を知ることが
できる。As described above, according to the present invention, the water contained in a container is made into liquid water or frozen water at a predetermined temperature, and air is passed through the container while making contact with the water to achieve a target dew point or frost. In a saturated air generator that obtains saturated air at a point,
It is possible to accurately know the state of water (liquid water or frozen water (ice)) in the container, thereby shortening the time required for lowering the water temperature when trying to obtain saturated air at a target frost point. It is also possible to easily determine whether water at the same temperature should be considered as a dew point or a frost point, and to know the exact saturated steam pressure at that time.
【図１】本発明の一実施例の概略構成を恒温恒湿器、乾
燥空気発生装置と共に示す図である。FIG. 1 is a diagram showing a schematic configuration of an embodiment of the present invention together with a thermo-hygrostat and a dry air generator.
Ａ 飽和空気発生装置 １ 容器 Ｗ 水 Ｌ 水位レベル １１ 気相部 ２、３ 容器１に空気を通過させる配管 ２１ 流量計 ４ 空気導入管 ４１ 電磁弁 ４２ 圧力センサ ４０ 管４の開口 ５ 乾燥空気発生装置 ６ 恒温恒湿器 ６１ 試験槽 Reference Signs List A saturated air generator 1 container W water L water level 11 gas phase part 2, 3 pipe for passing air through container 1 21 flow meter 4 air introduction pipe 41 solenoid valve 42 pressure sensor 40 opening of pipe 4 5 dry air generator 6 Constant temperature / humidity chamber 61 Test tank
Claims (1)
凍結水とし、空気を該容器に、前記水に接触させつつ通
過させて目標露点又は霜点の飽和空気を得る飽和空気発
生装置において、前記容器内の水位レベルより下方で開
口する空気導入管を設けるとともに、該管に空気流れの
有無を検出する手段を接続したことを特徴とする飽和空
気発生装置。1. A saturated air generator for converting water contained in a container into liquid water or frozen water at a predetermined temperature and passing air through the container while contacting the water to obtain saturated air at a target dew point or frost point. 3. The saturated air generator according to claim 1, further comprising an air introduction pipe which opens below a water level in the container, and a means for detecting the presence or absence of air flow is connected to the pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03230600A JP3102507B2 (en) | 1991-09-10 | 1991-09-10 | Saturated air generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03230600A JP3102507B2 (en) | 1991-09-10 | 1991-09-10 | Saturated air generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0571775A JPH0571775A (en) | 1993-03-23 |
| JP3102507B2 true JP3102507B2 (en) | 2000-10-23 |
Family
ID=16910287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03230600A Expired - Lifetime JP3102507B2 (en) | 1991-09-10 | 1991-09-10 | Saturated air generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3102507B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5501894B2 (en) * | 2010-08-06 | 2014-05-28 | 株式会社第一科学 | Saturated air generator |
| CN116358081B (en) * | 2023-05-31 | 2023-07-25 | 深圳市华图测控***有限公司 | Antifreezing gas humidifying device |
-
1991
- 1991-09-10 JP JP03230600A patent/JP3102507B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0571775A (en) | 1993-03-23 |
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