JPH0642705A - Steam generator - Google Patents

Abstract

PURPOSE:To provide a steam generator excellent in durability and reliability by reducing scale which may stick to and accumulate on the interior of a steam generating vessel body and the interior of water feed and drainage paths. CONSTITUTION:The operation of a heating device 23 is stopped by a switch 31 to finish operation for steam generation. Then, stored water 22 is drained from a steam generating vessel body 21, and the washing of said vessel body is also carried out. Thereafter. a drainage valve 29 is closed, and a water feed pump 30 is operated to feed water into the vessel body until a water level sensor 25 detects a state of the vessel filled with water. This control is carried out by a device 32. Since the stored water 22 remains in the interior of the steam generating vessel body 21, scale, which may stick to and accumulate on the inner face of the steam generating vessel body 21, is kept in a state of slime (mucilaginous state) by the remaining water. Therefore, the growth of scale sticking to and accumulating on the steam generating vessel body can be prevented.

Description

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

【０００１】[0001]

【産業上の利用分野】本発明は、スチーム入浴、加湿空
調、湿式乾燥、蒸し器などに利用する蒸気発生装置の構
成に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the construction of a steam generator used for steam bathing, humidifying air conditioning, wet drying, steamers and the like.

【０００２】[0002]

【従来の技術】従来、この種の水を沸騰させて蒸気を発
生させる蒸気発生装置は、図３及び処理Ｓ−１〜Ｓ−７
にわたるフローチャートを示す図４の通りである。すな
わち、スイッチ１１を操作して運転を停止させると（Ｓ
−１）、蒸気発生用缶体１の加熱装置３の加熱が停止し
（Ｓ−２）、そして排水弁９が開弁して（Ｓ−３）、蒸
気発生用缶体１内の貯水２と剥離スケールが給排水管
８、排水弁９を通って機外へ排出される（Ｓ−４）。そ
して、一定時間経過後（Ｓ−５）に給水ポンプ１０の運
転により給排水管８及び排水弁９を洗浄後（Ｓ−６）、
給水ポンプ１０を停止させ（Ｓ−７）、運転を終了させ
ていた。2. Description of the Related Art Conventionally, a steam generator for boiling water of this type to generate steam is shown in FIG. 3 and processes S-1 to S-7.
It is as FIG. 4 which shows the flowchart over. That is, when the switch 11 is operated to stop the operation (S
-1), the heating of the heating device 3 of the steam generating can 1 is stopped (S-2), and the drain valve 9 is opened (S-3) to store the water 2 in the steam generating can 1. And the peeling scale is discharged to the outside of the machine through the water supply / drainage pipe 8 and the drainage valve 9 (S-4). Then, after a lapse of a certain time (S-5), the water supply / drainage pipe 8 and the drainage valve 9 are washed by operating the water supply pump 10 (S-6),
The water supply pump 10 was stopped (S-7) and the operation was terminated.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、前記の
運転停止シーケンスでは、運転停止後において蒸気発生
用缶体１内に残留しているスケール成分が、蒸気発生用
缶体１内に、不使用時には水が入っていないので、蒸気
発生用缶体１の乾燥と共に濃縮されて凝固する。そし
て、その繰り返しによりスケール成分が成長し、蒸気発
生用缶体１の熱伝達率の劣化に伴う蒸気発生効率低下及
び給排水管８の詰まりが発生し、器具性能の低下並びに
器具寿命の低下をもたらしていた。However, in the above-described operation stop sequence, the scale component remaining in the steam generating can body 1 after the operation is stopped remains in the steam generating can body 1 when not in use. Since it does not contain water, it is condensed and solidified as the steam generating can body 1 is dried. Then, the scale component grows due to the repetition, and the steam generation efficiency is reduced and the water supply / drainage pipe 8 is clogged due to the deterioration of the heat transfer coefficient of the steam generating can body 1, resulting in the deterioration of the equipment performance and the life of the equipment. Was there.

【０００４】本発明は上記従来の問題点を解消するもの
で、運転停止時に残留したスケール成分の凝固を防止
し、スケール成分の成長の抑制をはかり、これにより長
時間の使用においても、缶体の安全性、耐久性に優れた
蒸気発生装置を実現しようとするものである。The present invention solves the above-mentioned problems of the prior art by preventing the solidification of the scale component remaining when the operation is stopped and suppressing the growth of the scale component, whereby the can body can be used even for a long time. It aims to realize a steam generator with excellent safety and durability.

【０００５】[0005]

【課題を解決するための手段】そこで本発明は、上記目
的を達成するために、器具の運転停止時の蒸気発生用缶
体の貯水を排水し、かつ給排水管洗浄後、蒸気発生用缶
体に再給水を行うよう制御する手段を備えたものであ
る。In order to achieve the above object, the present invention drains the stored water in the steam generating can during the operation of the appliance is stopped, and after cleaning the water supply / drain pipe, the steam generating can. It is equipped with a means for controlling to re-supply water.

【０００６】[0006]

【作用】上記手段により、本発明の蒸気発生装置は、蒸
気発生用缶体のスケール成分が貯水内に浸されているた
め凝固することなく保持され、蒸気発生用缶体から排出
され易く、給排水管、排水弁の詰まりが低減される。According to the above means, the steam generator of the present invention holds the scale component of the steam generating can body without being solidified because it is immersed in the stored water, and is easily discharged from the steam generating can body, so that water can be supplied and drained. Clogging of pipes and drain valves is reduced.

【０００７】[0007]

【実施例】以下、本発明による蒸気発生装置の実施例に
ついて、図面を参照しながら説明する。Embodiments of the steam generator according to the present invention will be described below with reference to the drawings.

【０００８】〔実施例１〕図１、及び処理Ｓ−１１〜Ｓ
−２１にわたるフローチャートの図２により本発明の一
実施例を示す。[First Embodiment] FIG. 1 and processes S-11 to S
An example of the present invention is shown in FIG.

【０００９】図１に示すように蒸気発生装置の運転ＳＷ
３１をＯＮすると、排水弁２９が閉弁状態であることを
制御装置３２が確認する。すると給水ポンプ３０が運転
を開始し、水が給排水管２８を通って蒸気発生用缶体２
１に給水される。そして、高水位検知用の水位センサ２
５が満水を検知するとポンプ３０の運転が停止し、加熱
装置２３の加熱が開始され、蒸気発生用缶体２３内の貯
水２２の沸騰と共に蒸気が発生する。この蒸気は蒸気吐
出管３３を通って使用箇所に導かれている。As shown in FIG. 1, the operation SW of the steam generator
When 31 is turned on, the control device 32 confirms that the drain valve 29 is closed. Then, the water supply pump 30 starts operation, and water passes through the water supply / drain pipe 28 and the steam generating can body 2
Water is supplied to 1. And the water level sensor 2 for high water level detection
When 5 detects full water, the operation of the pump 30 is stopped, the heating of the heating device 23 is started, and the stored water 22 in the steam generating can 23 is boiled and steam is generated. This steam is led to the point of use through the steam discharge pipe 33.

【００１０】このようにして連続的な蒸気発生により、
蒸気発生用缶体２１内の貯水２２が減少すると、低水位
検知用の水位センサ２５ａが貯水２２の減少を検知し、
給水ポンプ３０が運転され、再び、高水位検知用の水位
センサ２５が高水位を検知すると給水ポンプ３０の運転
を停止させる。そして、蒸気発生装置の運転中は、この
制御は制御装置３２によって連続に行われる。図中２４
は水槽である。In this way, continuous steam generation results in
When the water storage 22 in the steam generating can 21 decreases, the low water level detection water level sensor 25a detects the decrease of the water storage 22,
The water supply pump 30 is operated, and when the water level sensor 25 for high water level detection again detects a high water level, the operation of the water supply pump 30 is stopped. Then, during the operation of the steam generator, this control is continuously performed by the controller 32. 24 in the figure
Is an aquarium.

【００１１】そして、上記構成により次に本発明の特徴
部分の動作を説明すると、運転スイッチ３１をＯＦＦす
ると（Ｓ−１１）、蒸気発生用缶体２１の加熱装置２３
の加熱が停止する（Ｓ−１２）。その直後、排水弁２９
が開弁し（Ｓ−１３）、蒸気発生用缶体２１内の貯水２
２が給排水管２８及び排水弁２９を通って機外に排水さ
れる（Ｓ−１４）。その後の一定時間休止後（Ｓ−１
５）、給水ポンプ３０が運転され（Ｓ−１６）、給排水
管２８及び排水弁２９の洗浄後、再び停止する（Ｓ−１
７）。Next, the operation of the characteristic part of the present invention having the above-described structure will be described. When the operation switch 31 is turned off (S-11), the heating device 23 for the steam generating can 21 is heated.
Heating of S is stopped (S-12). Immediately after that, the drain valve 29
Is opened (S-13), and the stored water 2 in the steam generating can 21 is closed.
2 is drained out of the machine through the water supply / drain pipe 28 and the drain valve 29 (S-14). After a certain period of rest after that (S-1
5), the water supply pump 30 is operated (S-16), and after the water supply / drain pipe 28 and the drain valve 29 are cleaned, the water supply pump 30 is stopped again (S-1).
7).

【００１２】次に排水弁２９が閉弁し（Ｓ−１８）、給
水ポンプ３０が再運転され、水位センサタンク２４の高
水位検知用の水位センサ２５が高水位を検知すると給水
ポンプ３０の運転を停止する（Ｓ−１９・Ｓ−２０・Ｓ
−２１）。そして、運転スイッチ３１により、次の運転
が開始されるまで、蒸気発生用缶体２１内の貯水２２は
保持され、蒸気発生用缶体２１内のスケール凝固を防止
することができる。Next, when the drain valve 29 is closed (S-18), the water supply pump 30 is restarted, and the water level sensor 25 for detecting the high water level in the water level sensor tank 24 detects a high water level, the water supply pump 30 is operated. Stop (S-19, S-20, S
-21). Then, the operation switch 31 holds the stored water 22 in the steam generating can 21 until the next operation is started, thereby preventing scale solidification in the steam generating can 21.

【００１３】[0013]

【発明の効果】以上の説明により明らかなように、本発
明の蒸気発生装置では、制御手段が運転停止中の蒸気発
生用缶体内を貯水で満たして保存するように制御するか
ら、蒸気発生用缶体内に堆積するスケール成分の凝固を
軽減できると共に排水回路でのスケール片の詰まりも防
止することができ、安全性、耐久性に優れた蒸気発生装
置を提供することができる。As is apparent from the above description, in the steam generating apparatus of the present invention, the control means controls so as to fill and store the inside of the steam generating can while the operation is stopped. It is possible to reduce the coagulation of scale components accumulated in the can body and prevent clogging of scale pieces in the drainage circuit, and it is possible to provide a steam generator having excellent safety and durability.

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

【図１】本発明蒸気発生装置の一実施例を示す構成図FIG. 1 is a configuration diagram showing an embodiment of a steam generator of the present invention.

【図２】同装置の動作を示すフローチャートFIG. 2 is a flowchart showing the operation of the device.

【図３】従来の蒸気発生装置を示す構成図FIG. 3 is a configuration diagram showing a conventional steam generator.

【図４】同従来例の動作を示すフローチャートFIG. 4 is a flowchart showing the operation of the conventional example.

【符号の説明】[Explanation of symbols]

２１ 蒸気発生用缶体 ２２ 貯水 ２５ 高水位検知用水位センサ ２９ 排水弁 ３０ 給水ポンプ ３２ 制御装置（制御手段） 21 Canister for Steam Generation 22 Water Storage 25 Water Level Sensor for High Water Level Detection 29 Drain Valve 30 Water Supply Pump 32 Control Device (Control Means)

───────────────────────────────────────────────────── フロントページの続き (72)発明者 岡田 康弘 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhiro Okada 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】蒸気発生用缶体と、排水及び洗浄の終った
前記蒸気発生用缶体に再注水を行い貯水で満たすように
する制御手段を有する蒸気発生装置。1. A steam generator having a steam generating can body and a control means for refilling the steam generating can body which has been drained and washed so as to be filled with stored water.