JPH06341933A - Hygrometer calibrating device - Google Patents

Abstract

PURPOSE:To provide a small-sized, compact, and highly precise hygrometer calibrating device. CONSTITUTION:A constant temperature water W controlled to be at a fixed temperature T1 is sent between inner body (inside metal body) and outer body (outside metal body) consisting of metals having good heat conductivity to hold the whole body of a saturating device 3 at an uniform temperature. The humidified air Ao from a humidifier 1 is disturbed by the irregular form of the inside of the inner body, and laid into a prescribed temperature by heat conduction to provide a saturated air A1. A hygrometer 6 is calibrated by use of this saturated air 1.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は、湿度計を校正するた
めに湿度を発生する湿度計校正装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hygrometer calibration device that generates humidity for calibrating a hygrometer.

【０００２】[0002]

【従来の技術】湿度計を構成するために使用する湿度発
生装置には、ＪＩＳ Ｚ８８０６等でも示されているよ
うに、水蒸気が飽和している飽和槽の温度、圧力と、目
的とする湿度を得るための測定・試験槽の温度、圧力を
利用する２温度法、２圧力法、２温度２圧力法を用いた
ものがある。また、飽和槽の飽和空気と乾燥空気を混合
させる分流式を用いたもの等がある。2. Description of the Related Art As shown in JIS Z8806 and the like, a humidity generator used to construct a hygrometer includes the temperature and pressure of a saturated tank in which water vapor is saturated and the desired humidity. There is a method using a two-temperature method, a two-pressure method, a two-temperature two-pressure method, which utilizes the temperature and pressure of a measurement / test tank for obtaining. In addition, there is a device using a split flow system in which saturated air in a saturation tank and dry air are mixed.

【０００３】[0003]

【発明が解決しようとする課題】こうした湿度発生装置
には、恒温恒湿の飽和空気を得るための飽和槽（飽和
器、飽和装置）が用いられているが、多くは飽和槽自体
を水温槽内に設置して一定温度とし飽和空気を得るよう
にしている。A saturation tank (saturator, saturation device) for obtaining saturated air of constant temperature and humidity is used in such a humidity generator, but in many cases, the saturation tank itself is a water temperature tank. It is installed inside to maintain a constant temperature and obtain saturated air.

【０００４】しかしながら、水温槽を用いると、水温槽
全体の温度制御を必要とし制御対象の熱容量が大きく、
制御が繁雑で、また、均一な温度分布を得るために水温
槽全体を攪拌する必要があり温度分布の評価が困難で、
かつ装置も大型ものとなる問題点があった。However, when the water temperature tank is used, it is necessary to control the temperature of the entire water temperature tank, and the heat capacity of the controlled object is large.
Control is complicated, and it is difficult to evaluate the temperature distribution because it is necessary to stir the entire water temperature tank to obtain a uniform temperature distribution.
Moreover, there is a problem that the device becomes large in size.

【０００５】この発明の目的は、以上の点に鑑み、熱効
率を高め、小型で恒湿空気が多くとれ、一義的校正装置
としての精度評価を容易とする湿度計校正装置を提供す
ることである。SUMMARY OF THE INVENTION In view of the above points, an object of the present invention is to provide a hygrometer calibration device which has improved thermal efficiency, is small in size, and can take a large amount of constant humidity air, and facilitates accuracy evaluation as a unique calibration device. .

【０００６】[0006]

【課題を解決するための手段】この発明は、恒温水を循
環させ一定温度とされた金属体の内部に凹凸形状の流路
を形成し、この流路に加湿空気を流し、飽和空気を得る
構造の飽和装置を有するようにした湿度計校正装置であ
る。According to the present invention, a concavo-convex flow path is formed inside a metal body having a constant temperature circulated by constant temperature water, and humidified air is passed through this flow path to obtain saturated air. It is a hygrometer calibration device having a structure saturation device.

【０００７】[0007]

【実施例】図１は、この発明に係る一実施例を示す湿度
計校正装置である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a hygrometer calibration apparatus showing an embodiment according to the present invention.

【０００８】図において、１は水１０を有する加湿器
で、冷水器や冷凍機のような冷却手段２からの冷却用の
液体が配管Ｐ１により供給され冷却されるとともにセン
サＳ１で水１０の温度を検出し制御手段Ｃ１でヒータＨ
１を制御することによりその水１０は、所定温度Ｔｏと
される。加湿器１の下部よりコンプレッサ等で導入され
たエアＡは、水１０の中をバブリングされ飽和に近い加
湿空気Ａｏとなって飽和装置３の下部に導入される。飽
和装値３は、全体が熱伝導が良好な金属等の材質とさ
れ、内体（内側の金属体）と外体（外側の金属体）間に
一定温度Ｔ１とされた恒温水Ｗが循環し、内体の空気流
路はたとえば乱流が生じやすい凹凸状とされ効果率な熱
伝達を達成し、飽和空気Ａ１が上方から取り出される。
この飽和装置３への恒温水を供給する恒温水循環器４
は、冷却手段２の冷媒の配管Ｐ１により冷却されるとと
もに飽和装置３へ配管Ｐ２で送られ配管Ｐ３で戻ってく
る恒温水Ｗの温度Ｔ１を温度センサＳ２で検出し、ヒー
タＨ２を制御して所定温度Ｔ１に制御される。この温度
Ｔ１は、加湿器Ｔｏよりも若干低いので、相対湿度が１
００％の飽和空気Ａ１が得られ配管Ｐ４に送出される。
この飽和空気Ａ１は、配管Ｐ４でヒータＨ３で加熱さ
れ、測定槽５の入口の温度Ｔ２を温度センサＳ３で検出
して配管Ｐ４中のヒータＨ３を制御し、所定の温度Ｔ２
で、所定の湿度Ｈの空気Ａ２が測定槽５に導入され、そ
こで湿度計６等を挿入し、湿度計の校正が行われる。In the figure, reference numeral 1 is a humidifier having water 10, and a cooling liquid from a cooling means 2 such as a chiller or a refrigerator is supplied and cooled by a pipe P1 and a temperature of the water 10 is measured by a sensor S1. Of the heater H by the control means C1
By controlling 1, the water 10 is brought to the predetermined temperature To. The air A introduced from the lower part of the humidifier 1 by a compressor or the like is bubbled through the water 10 to become humidified air Ao which is close to saturation and is introduced to the lower part of the saturation device 3. The saturation load value 3 is made of a material such as a metal having good heat conduction as a whole, and the constant temperature water W having a constant temperature T1 circulates between the inner body (inner metal body) and the outer body (outer metal body). However, the air flow path of the inner body is made, for example, uneven so that turbulent flow is likely to occur, achieving efficient heat transfer, and the saturated air A1 is taken out from above.
Constant temperature water circulator 4 for supplying constant temperature water to the saturation device 3
The temperature sensor S2 detects the temperature T1 of the constant temperature water W that is cooled by the refrigerant pipe P1 of the cooling means 2 and is sent to the saturation device 3 by the pipe P2 and returned by the pipe P3, and controls the heater H2. The temperature is controlled to a predetermined temperature T1. Since this temperature T1 is slightly lower than that of the humidifier To, the relative humidity is 1
00% of saturated air A1 is obtained and sent to the pipe P4.
The saturated air A1 is heated by the heater H3 in the pipe P4, the temperature T2 at the inlet of the measuring tank 5 is detected by the temperature sensor S3, the heater H3 in the pipe P4 is controlled, and the predetermined temperature T2 is reached.
Then, the air A2 having a predetermined humidity H is introduced into the measuring tank 5, and the hygrometer 6 and the like are inserted therein, and the hygrometer is calibrated.

【０００９】つまり、一般に相対湿度Ｈは次式で与えら
れる。That is, the relative humidity H is generally given by the following equation.

【００１０】 Ｈ＝（Ｐ２／Ｐ１）・（ｅ１／ｅ２）×１００ （１） ここでＰ１は飽和装置３の圧力、Ｐ２は測定槽５の圧
力、ｅ１は飽和装置３の温度Ｔ１における飽和水蒸気
圧、ｅ２は測定槽５の温度Ｔ２における飽和水蒸気圧で
ある。H = (P2 / P1) · (e1 / e2) × 100 (1) where P1 is the pressure of the saturation device 3, P2 is the pressure of the measuring tank 5, and e1 is saturated steam at the temperature T1 of the saturation device 3. The pressure, e2, is the saturated water vapor pressure at the temperature T2 of the measuring tank 5.

【００１１】この図１では２温度法なので圧力Ｐ２／Ｐ
１＝１（両圧力共に大気圧）、温度Ｔ２はほぼ室温で、
Ｔ１はＴ２より低い温度であるので、ｅ１＜ｅ２で、次
式から１００％以下の相対湿度が得られる。In FIG. 1, since the two-temperature method is used, the pressure P2 / P
1 = 1 (both pressures are atmospheric pressure), temperature T2 is almost room temperature,
Since T1 is lower than T2, e1 <e2 and a relative humidity of 100% or less is obtained from the following equation.

【００１２】 Ｈ＝（ｅ１／ｅ２）×１００ （２） Ｔ２＝２０℃、Ｔ１＝０〜１５℃でＨ＝３０〜８０％程
度の湿度が得られる。H = (e1 / e2) × 100 (2) At T2 = 20 ° C. and T1 = 0 to 15 ° C., a humidity of H = 30 to 80% can be obtained.

【００１３】また、測定槽５は、この例では、室温とさ
れ、上端に達した所定湿度の空気はたとえば外周から下
方に達して外気に放出されるが、適当な断熱材で外側を
囲むとともに、冷却しつつヒータで所定温度に制御する
等して種々の温度の恒温とし、目的とする所用温度での
湿度定点を実現してもよい。Further, in this example, the measuring tank 5 is at room temperature, and the air having a predetermined humidity reaching the upper end, for example, reaches the lower part from the outer periphery and is released to the outside air. Alternatively, the humidity may be controlled to a predetermined temperature while being cooled so as to have a constant temperature at various temperatures, and a fixed humidity point at a desired temperature may be realized.

【００１４】図２は、この発明の飽和装置についての一
実施例を示す構成説明図である。FIG. 2 is a structural explanatory view showing an embodiment of the saturation device of the present invention.

【００１５】図において、内側に空気流路に垂直で互い
に違いとされた溝により凹凸形状とされた流路Ｒ１を形
成したアルミニュウム等の熱伝導の良好な金属等よりな
る板状の内体（内側の金属体）３１を１対対向させ、そ
の外側に内体３１と間隔をもたせ外体３２を設け、その
間の密閉した空間Ｒ２に恒温水Ｗを循環させる金属等の
外体（外側の金属体）３２が形成され、空間Ｒ２は下方
の配管Ｐ２より図１で示す恒温水Ｗが供給され、配管Ｐ
３より排出され、全体として所定温度Ｔ１に制御、保持
されている。下方の入口３ａより内体３１の流路Ｒ１に
入った温度Ｔ１より、やや高い温度Ｔｏの飽和に近い加
湿槽１からの加湿空気Ａ１は、この飽和装置３の流路Ｒ
１を上昇する過程で温度Ｔｏよりやや低い所定温度Ｔ１
とされて凹凸形状により乱流状態が発生し内体３１と高
効率な熱伝達が達成され、上部の出口３ｂにより温度Ｔ
１の飽和空気Ａ１が得られる。In the figure, a plate-shaped inner body made of metal or the like having good heat conduction such as aluminum, in which a flow path R1 having an uneven shape by grooves which are perpendicular to the air flow path and different from each other inside is formed ( One pair of inner metal bodies 31 are opposed to each other, an outer body 32 is provided outside the inner body 31 with a space therebetween, and an outer body such as a metal (outer metal) that circulates the constant temperature water W in a sealed space R2 therebetween. Body 32 is formed, and the space R2 is supplied with the constant temperature water W shown in FIG.
It is discharged from No. 3, and is controlled and maintained at a predetermined temperature T1 as a whole. The humidified air A1 from the humidifying tank 1 which is slightly higher than the temperature T1 that has entered the flow path R1 of the inner body 31 through the lower inlet 3a is near the saturation of the temperature T1.
The predetermined temperature T1 slightly lower than the temperature To in the process of increasing 1.
As a result, a turbulent state is generated due to the uneven shape, and highly efficient heat transfer is achieved with the inner body 31, and the temperature T is increased by the upper outlet 3b.
1 saturated air A1 is obtained.

【００１６】つまり、水の熱容量は空気の熱容量の約３
０００倍で大きく、飽和装置３の周囲が十分に断熱され
ていて熱損失が小さい状態では、循環する恒温水Ｗの温
度Ｔ１と内体３１および外体３２の金属体の温度が一致
し、飽和装置３の全体が一様な均一温度Ｔ１となる。こ
れに、加湿空気Ａｏを流すと、加湿空気への熱伝達率が
大きい状態では加湿空気の温度を金属等の内体３１の温
度と一致して温度Ｔ１の湿度１００％の恒温飽和空気Ａ
１が得られる。空気と内体３１の壁との間の熱伝達率
は、空気が層流状体で流れると小さく、乱流を生ずる形
状では大きい。そこで上記空気流路Ｒ１に垂直で水平長
手方向に沿った溝等よりなる凹凸を内体３１の内側に形
成し、熱伝達率を大きくし、高効率に飽和空気を得るよ
うにしている。こうして得られた飽和空気は図１の配管
Ｐ４を介し、測定槽５へ導かれる。That is, the heat capacity of water is about 3 times that of air.
In the state where the temperature of the circulating constant-temperature water W is equal to the temperature of the metal bodies of the inner body 31 and the outer body 32, the saturation of the saturated body 3 is saturated and the temperature of the circulating body is saturated. The entire device 3 has a uniform temperature T1. When the humidified air Ao is flown thereinto, the temperature of the humidified air matches the temperature of the inner body 31 such as a metal in the state where the heat transfer rate to the humidified air is large, and the constant temperature saturated air A having the humidity of 100% at the temperature T1 is used.
1 is obtained. The heat transfer coefficient between the air and the wall of the inner body 31 is small when the air flows in the laminar flow body, and is large in the shape that causes the turbulent flow. Therefore, irregularities made of grooves or the like that are perpendicular to the air flow path R1 and extend in the horizontal longitudinal direction are formed inside the inner body 31 to increase the heat transfer coefficient and obtain saturated air with high efficiency. The saturated air thus obtained is guided to the measuring tank 5 through the pipe P4 in FIG.

【００１７】なお、内体３１の金属板の凹凸形状は、上
記の例では、流路Ｒ１に垂直で互いに違いとなるものを
用いたが、乱流を十分に発生させる凹凸形状であれば、
板状、斜め状、丸状、その他どのような形状であっても
よい。また、下方から上方への流路Ｒ１は曲っていても
よい。また、必要に応じ飽和装置３の全体を断熱材で囲
むようにしてもよい。In the above example, the metal plate of the inner body 31 has irregularities which are perpendicular to the flow path R1 and different from each other.
It may have a plate shape, an oblique shape, a round shape, or any other shape. Further, the flow path R1 from the lower side to the upper side may be curved. Moreover, you may make it enclose the whole saturation device 3 with a heat insulating material as needed.

【００１８】[0018]

【発明の効果】以上述べたように、本願発明は、飽和装
置として、恒温水を循環させ一定温度とされた飽和装置
の内部の流路を乱流を生じやすい凹凸形状を有するもの
とし、加湿空気を流して高効率な熱伝達を達成し、効率
的に飽和空気を得るようにしたもので、恒温水槽のよう
な大型の装置は不要で、湿度計校正装置として小型、コ
ンパクト化を図ることができ、また、飽和装置の温度は
容易に変更でき、種々の湿度が発生でき、また、２温度
法以外の装置にも使用できる。特に２温度法では、飽和
装置と試験、測定槽それぞれの温度を独立に制御でき、
所定温度での高精度の湿度を得ることができる。As described above, according to the present invention, as the saturation device, the flow path inside the saturation device in which constant temperature water is circulated to have a constant temperature has an uneven shape that easily causes turbulent flow, and humidification is performed. A high-efficiency heat transfer is achieved by flowing air so that saturated air can be obtained efficiently. A large-scale device such as a constant temperature water tank is not required, and a hygrometer calibration device can be made compact and compact. In addition, the temperature of the saturation device can be easily changed, various kinds of humidity can be generated, and the device can be used in devices other than the two-temperature method. Especially in the two-temperature method, the temperature of the saturation device, the test and the measuring tank can be controlled independently,
It is possible to obtain highly accurate humidity at a predetermined temperature.

【図面の簡単な説明】[Brief description of drawings]

【図１】この発明の一実施例を示す構成説明図である。FIG. 1 is a structural explanatory view showing an embodiment of the present invention.

【図２】この発明の一実施例を示す構成説明図である。FIG. 2 is a structural explanatory view showing an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１ 加湿器 ２ 冷却手段 ３ 飽和装置 ４ 恒温水循環器 ５ 測定槽 Ｐ１〜Ｐ４ 配管 Ｈ１〜Ｈ３ ヒータ Ｃ１〜Ｃ３ 制御手段 ３１ 内体（金属体） ３２ 外体（金属体） 1 Humidifier 2 Cooling means 3 Saturator 4 Constant temperature water circulator 5 Measuring tank P1 to P4 Pipes H1 to H3 Heaters C1 to C3 Control means 31 Inner body (metal body) 32 Outer body (metal body)

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】恒温水を循環させ一定温度とされた金属体
の内部に凹凸形状の流路を形成し、この流路に加湿空気
を流し、飽和空気を得る構造の飽和装置を有する湿度計
校正装置。1. A hygrometer having a saturating device having a structure in which a concave-convex flow path is formed inside a metal body having a constant temperature circulated by constant temperature water, and humidified air is caused to flow through the flow path to obtain saturated air. Calibration device.