JPH0443162B2 - - Google Patents

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、浴室等に蒸気を充満させてサウナ室
等に利用する蒸気を作る蒸気発生装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a steam generator that fills a bathroom or the like with steam to produce steam for use in a sauna room or the like.

従来の技術 一般に水を沸騰蒸発させるこの種の蒸気発生装
置は第４図、第５図に示すように、缶体２２と、
その缶体の上部空間に設けた蒸気出口２６と、缶
体の下部水中に設けた給水口２５と、缶体上部空
間に設けた蒸気圧導入口２９と、給水管３０を周
囲に巻いた燃焼室４３と、給水管３０の上部を分
岐した導入口３１と、前記蒸気圧導入口２９と導
入口３１とにホースまたは管３２，３３で連結
し、缶体内水位と同水位になる水位検出室３４お
よび水位検出室に設けた水位センサ３５，３６
と、缶体２２を加熱し内部の水２７を沸騰蒸発す
る加熱源２１が備えられていた。BACKGROUND ART Generally, this type of steam generator for boiling and evaporating water has a can body 22, as shown in FIGS. 4 and 5.
A steam outlet 26 provided in the upper space of the can body, a water supply port 25 provided in the lower part of the can body, a steam pressure inlet 29 provided in the upper space of the can body, and a combustion system wrapped around a water supply pipe 30. A water level detection chamber which is connected to the chamber 43, an inlet 31 branched from the upper part of the water supply pipe 30, and the steam pressure inlet 29 and the inlet 31 with hoses or pipes 32, 33, and whose water level is the same as the water level inside the can. 34 and water level sensors 35 and 36 provided in the water level detection chamber.
A heating source 21 was provided to heat the can body 22 and boil and evaporate the water 27 inside.

前記した構成により缶体２２内の水２７が沸騰
蒸発して蒸気２８が発生すると、缶体上部空間に
設けた蒸気出口２６から、蒸気を取り出し、器外
へ送り出していた。沸騰蒸発を継続することによ
り缶体内の水位が下がると水が次々と自動的に補
給される。したがつて高温で析出するスケール成
分（カルシユウム、マグネシユウム、シリカ等）
は、濃縮されて缶体２２の内面に付着する。蒸気
発生装置の使用を停止することにより、熱膨張し
ていた缶体２２は冷却されて収縮する。缶体２２
の熱膨張係数と缶体内壁に付着したスケール４０
（第６図参照）の熱膨張係数は、缶体＞スケール
のようになる。したがつて付着したスケールが割
れてはがれ落ち、スケール片４１となつて缶体２
２内に堆積する。なお蒸気発生装置の使用を停止
すると同時に給水管３０の上流の途中に設けた排
水弁３９が開き、缶体内の濃縮された沸騰水２７
と共に、上記したスケール片４１も燃焼室４３の
周囲に巻かれた給水管３０を逆流して排出され
る。 With the above-described configuration, when the water 27 in the can body 22 boils and evaporates to generate steam 28, the steam is taken out from the steam outlet 26 provided in the upper space of the can body and sent out of the vessel. When the water level inside the can falls due to continued boiling and evaporation, water is automatically replenished one after another. Therefore, scale components (calcium, magnesium, silica, etc.) that precipitate at high temperatures
is concentrated and adheres to the inner surface of the can body 22. By stopping the use of the steam generator, the thermally expanding can body 22 is cooled and contracts. Can body 22
The coefficient of thermal expansion and the scale 40 attached to the inner wall of the can
The coefficient of thermal expansion (see Figure 6) is as follows: can body > scale. Therefore, the adhering scale cracks and peels off, becoming scale pieces 41 and disposing of the can body 2.
Deposits within 2. Note that at the same time as the use of the steam generator is stopped, the drain valve 39 installed upstream of the water supply pipe 30 opens, and the concentrated boiling water 27 inside the can is drained.
At the same time, the scale pieces 41 described above also flow backward through the water supply pipe 30 wound around the combustion chamber 43 and are discharged.

発明が解決しようとする問題点 しかしながら上記のような構成では、缶体２２
の内壁よりはがれ落ちたスケール片４１は、燃焼
室４３の周囲に巻かれた給水管３０内を通過して
器外に排出されるために、次のような問題点を有
していた。Problems to be Solved by the Invention However, in the above configuration, the can body 22
The scale pieces 41 that have peeled off from the inner wall of the combustion chamber 43 pass through the water supply pipe 30 that is wound around the combustion chamber 43 and are discharged outside the vessel, resulting in the following problems.

(1) 排出経路が長いので途中でひつかかつて給水
管が詰り、濃縮された水およびスケール片が排
出できない。(1) Because the drainage route is long, the water supply pipe may once become clogged, making it impossible to discharge the concentrated water and scale particles.

(2) 缶体内の水が蒸発して水位が下がると自動的
に圧力の高い水が補給されるので、給水管の途
中にあるスケール片が缶体内に押しもどされる
ため十分な排出ができなく、缶体内に堆積す
る。(2) When the water in the can evaporates and the water level drops, high-pressure water is automatically replenished, so scale pieces in the middle of the water supply pipe are pushed back into the can, preventing sufficient drainage. , deposited inside the can body.

(3) 導入口にスケール片が入り、水位検出室と連
結しているホースまたは管が詰つて、水位検出
が正確にできなくなる。（第５図参照） 本発明は前記問題点を解決するもので、缶体内
へのスケール片堆積を防止するとともに水位検出
を正確に行うことを目的とする。(3) Scale pieces enter the inlet and clog the hose or pipe connected to the water level detection chamber, making accurate water level detection impossible. (See FIG. 5) The present invention is intended to solve the above-mentioned problems, and aims to prevent scale pieces from accumulating inside the can and to accurately detect the water level.

問題点を解決するための手段 本発明は、前記問題点を解決するために、蒸気
出口と給水口と蒸気圧導入口を有し、かつ給水管
を周囲に巻いた燃焼室を有する缶体と、前記給水
管を缶体の給水口直前で下方向に分岐し、独立し
て設けた排水管と、この排水管の先に設けた排水
弁と、この排水管の上部で横方向に分岐した導水
口と、前記蒸気圧導入口と、前記導入口とに連結
し、缶体内水位と同水位になる水位検出室および
その水位検出室に設けた水位センサと、缶体を加
熱し、内部の水を沸騰蒸発させる加熱源を備える
ものである。Means for Solving the Problems In order to solve the above problems, the present invention provides a can body having a steam outlet, a water supply port, a steam pressure inlet, and a combustion chamber around which a water supply pipe is wound. , the water supply pipe is branched downward just before the water supply opening of the can body, a drain pipe is provided independently, a drain valve is provided at the tip of this drain pipe, and a drain pipe is branched laterally at the upper part of the drain pipe. A water inlet, the steam pressure inlet, a water level detection chamber that is connected to the inlet and has the same water level as the water level inside the can, and a water level sensor installed in the water level detection chamber; It is equipped with a heating source that boils and evaporates water.

作 用 本発明は上記した構成によつて、給水管と下方
向に分岐された排水管は、各々独立しているので
スケール片は重力と排水圧によつて排水管を出て
いくため、燃焼室に巻かれた給水管側に入つて、
給水管が詰ることなく、かつ缶体内に押しもどさ
れることもない。また水位検出室へ連結した導入
口は横方向であるため、排水管を落下するスケー
ル片は導入口には入らないのでホースを詰らすこ
ともない。Effect The present invention has the above-described configuration, and since the water supply pipe and the drain pipe branched downward are each independent, scale pieces exit the drain pipe due to gravity and drainage pressure, so that they are not combusted. Enter the water supply pipe that wraps around the room,
The water supply pipe will not be clogged and will not be pushed back into the can. Furthermore, since the inlet connected to the water level detection chamber is oriented horizontally, scale pieces that fall down the drain pipe do not enter the inlet, so they do not clog the hose.

実施例 以下本発明の一実施例について図面を参照しな
がら説明する。第１図、第２図において、缶体２
の下方に一定の燃焼室を設けて加熱手段であるバ
ーナ１が配設されている。缶体２の外周面は、バ
ーナ１の燃焼熱を吸収するフイン３が多数溶接さ
れている。缶体２は、周囲に給水管１０を巻きつ
けた燃焼室４４と一体になつている。前記缶体２
には、上方空間に蒸気出口６と、下方水中に連通
した給水口５と、上方空間に蒸気圧導入口９が設
けられている。前記燃焼室４４に巻いた給水管１
０は、缶体２の給水口５と連結されているが、給
水口５の直前で排水口１７を下方向に分岐して独
立した排水管を接続し、その先に排水弁１９を設
け、かつ排水管２０の上部に横方向に向けて分岐
した導入口１１を設けている。前記蒸気圧導入口
９と前記導水口１１は、缶体水位と同水位になる
水位検出室１４とホースまたは管１２，１３で連
結されている。水位検出室１４には、缶体２内の
水７が沸騰蒸発して減つても常に一定範囲内に水
位が保たれるように給水弁に信号を送す上水位セ
ンサ１５と下水位センサ１６が設けられている。
缶体内の水７は沸騰蒸発、補給というサイクルが
くり返されることにより水中のスケール成分が濃
縮され缶体２の内壁に付着する（第３図参照）。
蒸気発生装置の使用を停止すると、バーナ１の燃
焼が止まり、水位検出機能も止まる。使用停止と
同時に排水弁１９が自動的に開かれて、缶体２内
の濃縮された水７が蒸気圧により勢いよく排水さ
れる。バーナ１の燃焼停止により缶体２は急激に
冷却されて、収縮をする。沸騰蒸発中の高温時に
付着した缶体内壁のスケール４２は、缶体２とス
ケール４２の熱膨張係数のちがいにより、はがれ
落ちてスケール片２０となり缶体２の下部に堆積
する。蒸気発生装置の使用と停止をくり返すこと
により、缶体内壁にはスケールの付着と剥離をく
り返す。排水口１７は缶体２の給水口５の直前で
給水管１０を分岐して下向きに構成されているの
で蒸気発生装置の停止と同時に排水弁１９が開か
れ蒸気圧により剥離堆積したスケール片２０は缶
体内の濃縮水７と一緒に効率よく排出される。ま
た給水管１０の排水管１８が独立しているので給
水管１０にスケール片２０が詰ることもない。又
排水管１８の上部で横方向に導入口１１を分岐し
ているのでスケール片２０が導入口１１に入り、
ホース１２を詰らすこともない。Embodiment An embodiment of the present invention will be described below with reference to the drawings. In Figures 1 and 2, the can body 2
A certain combustion chamber is provided below the burner 1, which is a heating means. A large number of fins 3 that absorb the combustion heat of the burner 1 are welded to the outer peripheral surface of the can body 2 . The can body 2 is integrated with a combustion chamber 44 around which the water supply pipe 10 is wrapped. Said can body 2
is provided with a steam outlet 6 in the upper space, a water supply port 5 communicating with the water below, and a steam pressure inlet 9 in the upper space. Water supply pipe 1 wound around the combustion chamber 44
0 is connected to the water supply port 5 of the can body 2, but just before the water supply port 5, the drain port 17 is branched downward to connect an independent drain pipe, and a drain valve 19 is provided at the end of the drain port 17. In addition, an inlet 11 is provided at the upper part of the drain pipe 20, which branches laterally. The steam pressure inlet 9 and the water inlet 11 are connected by hoses or pipes 12 and 13 to a water level detection chamber 14 whose water level is the same as the can body water level. The water level detection chamber 14 includes an upper water level sensor 15 and a lower water level sensor 16 that send a signal to the water supply valve so that the water level is always maintained within a certain range even if the water 7 in the can body 2 boils and evaporates. is provided.
As the water 7 inside the can body undergoes a repeated cycle of boiling, evaporating, and replenishing, scale components in the water are concentrated and adhere to the inner wall of the can body 2 (see FIG. 3).
When the use of the steam generator is stopped, combustion in the burner 1 is stopped, and the water level detection function is also stopped. At the same time as the use is stopped, the drain valve 19 is automatically opened, and the concentrated water 7 in the can body 2 is drained vigorously due to steam pressure. When the burner 1 stops burning, the can body 2 is rapidly cooled and contracts. The scale 42 attached to the inner wall of the can during boiling and evaporation at high temperatures peels off and becomes scale pieces 20 which are deposited on the lower part of the can 2 due to the difference in thermal expansion coefficient between the can 2 and the scale 42. As the steam generator is repeatedly used and stopped, scale is repeatedly deposited and peeled off on the inner wall of the can. Since the drain port 17 branches the water supply pipe 10 just before the water supply port 5 of the can body 2 and is configured to point downward, the drain valve 19 is opened at the same time as the steam generator is stopped, and the scale pieces 20 are separated and deposited due to the steam pressure. is efficiently discharged together with the concentrated water 7 inside the can. Further, since the drain pipe 18 of the water supply pipe 10 is independent, the water supply pipe 10 is not clogged with scale pieces 20. Also, since the inlet 11 is branched laterally at the upper part of the drain pipe 18, the scale pieces 20 enter the inlet 11,
There is no need to clog the hose 12.

発明の効果 以上のように本発明によれば、次のような作用
効果を有する。Effects of the Invention As described above, the present invention has the following effects.

(1) 排水管と給水管を缶体の給水口直前で分岐し
独立させているためスケール片の排出効果が高
く、かつ給水管にスケール片が詰ることがない
ので給水もスムーズにできる。(1) The drain pipe and water supply pipe are separated just before the water supply port of the can body, making them independent, making it highly effective for removing scale pieces.Also, since the water supply pipe is not clogged with scale pieces, water can be supplied smoothly.

(2) 水位検出室へ連結する導入口も横方向にして
排水管上部に設けているので排水時に水位検出
室内の水も吸い出されホース１２内は常に掃除
でき、水位検出が正確にできる。(2) Since the inlet connected to the water level detection chamber is also oriented horizontally and provided at the top of the drain pipe, the water inside the water level detection chamber is also sucked out during drainage, allowing the inside of the hose 12 to be constantly cleaned and accurate water level detection.

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

第１図は本発明の一実施例を示す蒸気発生装置
の縦断面図、第２図は第１図ほ右側より見た横断
面図で、両図面ともバーナにより加熱されて蒸気
発生している状態を示す。第３図は缶体内壁に付
着したスケール状態と剥離したスケール片を示す
断面図、第４図は従来例の縦断面図、第５図は第
４図を右側面よりみた横断面図で両図面には、ス
ケール片が排水時に出る状態と、水位検出室に連
結するホースへのスケールの詰り状態を示してい
る。第６図は同缶体内壁に付着したスケール状態
とスケール片を示す断面図である。 ２……缶体、５……給水口、６……蒸気出口、
９……蒸気圧導入口、１０……給水管、１１……
導水口、１４……水位検出室、１５，１６……
上、下の水位センサ、１７……排水口、１８……
排水管、１９……排水弁、２０……スケール片。 Fig. 1 is a longitudinal cross-sectional view of a steam generator showing an embodiment of the present invention, and Fig. 2 is a cross-sectional view as seen from the right side of Fig. 1. In both figures, steam is generated by being heated by a burner. Indicates the condition. Figure 3 is a cross-sectional view showing the state of scale attached to the inner wall of the can and peeled off scale pieces, Figure 4 is a longitudinal cross-sectional view of the conventional example, and Figure 5 is a cross-sectional view of Figure 4 seen from the right side. The drawings show the state in which scale pieces come out during drainage, and the state in which the scale clogs the hose connected to the water level detection chamber. FIG. 6 is a sectional view showing the state of scale and scale pieces attached to the inner wall of the can. 2...Can body, 5...Water inlet, 6...Steam outlet,
9... Steam pressure inlet, 10... Water supply pipe, 11...
Water inlet, 14... Water level detection chamber, 15, 16...
Upper and lower water level sensors, 17... Drain port, 18...
Drain pipe, 19...Drain valve, 20...Scale piece.

Claims (1)

【特許請求の範囲】[Claims] １ 蒸気出口と給水口と蒸気圧導入口を有し、か
つ給水管を周囲に巻いた燃焼室を有する缶体と、
前記給水管を缶体の給水口直前で下方向に分岐
し、独立して設けた排水口と、この排水口と連結
した排水管と、この排水管の先に設けた排水弁
と、前記排水管の上部で横方向に分岐した導水口
と、前記蒸気圧導入口と前記導水口とに連結し、
缶体内水位と同水位になる水位検出室およびその
水位検出室に設けた水位センサと、缶体を加熱
し、内部の水を沸騰蒸発させる加熱源を備えた蒸
気発生装置。1. A can body having a steam outlet, a water supply inlet, a steam pressure inlet, and a combustion chamber surrounded by a water supply pipe;
The water supply pipe is branched downward just before the water supply port of the can body, and a drain port provided independently, a drain pipe connected to the drain port, a drain valve provided at the end of the drain pipe, and the drain A water inlet branched laterally at the upper part of the pipe, connected to the steam pressure inlet and the water inlet,
A steam generator comprising a water level detection chamber whose water level is the same as the water level inside the can, a water level sensor installed in the water level detection chamber, and a heating source that heats the can and boils and evaporates the water inside.