JP2697604B2 - Can structure of electric once-through boiler - Google Patents
Can structure of electric once-through boilerInfo
- Publication number
- JP2697604B2 JP2697604B2 JP7445494A JP7445494A JP2697604B2 JP 2697604 B2 JP2697604 B2 JP 2697604B2 JP 7445494 A JP7445494 A JP 7445494A JP 7445494 A JP7445494 A JP 7445494A JP 2697604 B2 JP2697604 B2 JP 2697604B2
- Authority
- JP
- Japan
- Prior art keywords
- header
- water
- pipe
- boiler
- water pipe
- 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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- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、電熱ヒータを用いて
蒸気を発生させる電気式貫流ボイラの缶体構造に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a can structure of an electric once-through boiler that generates steam using an electric heater.
【０００２】[0002]
【従来の技術】従来、電気式貫流ボイラの缶体構造は、
図５〜図６に示すように、奥行方向に延びる円筒横置き
の下部ヘッダ２１に複数の垂直水管２２を単列に連結
し、これら垂直水管２２の各一側上端部より上昇管２３
を樹立し、そうした各上昇管２３の上端を前記下部ヘッ
ダ２１と同様な横置きの上部ヘッダ２４に連結し、且
つ、この各垂直水管２２の上端より電熱ヒータ２５を挿
入し、これら電熱ヒータ２５を垂直水管２２の上部にそ
れぞれ固定した缶体構造となっている。上部ヘッダ２４
に蒸気吐出管２６を設け、上部ヘッダ２４と下部ヘッダ
２１との間に水位制御管２７を設け、下部ヘッダ２１に
給水タンク２８を接続している。 2. Description of the Related Art Conventionally, the can structure of an electric once-through boiler is as follows.
As shown in FIGS. 5 and 6, a plurality of vertical water pipes 22 are connected in a single row to a lower header 21 that is arranged horizontally in a cylinder extending in the depth direction.
The upper end of each riser pipe 23 is connected to an upper header 24 which is horizontally arranged like the lower header 21 , and an electric heater 25 is inserted from the upper end of each vertical water pipe 22. Are fixed to the upper part of the vertical water pipe 22, respectively. Upper header 24
The upper header 24 and the lower header
A water level control pipe 27 is provided between the lower header 21 and the water level control pipe 27.
A water supply tank 28 is connected.
【０００３】ところで、上記構成の電気式貫流ボイラで
は、上部ヘッダ２４および下部ヘッダ２１を円筒状に形
成し、複数の垂直水管２２を単列に連結しているため、
ボイラ設置時において、奥行方向または横方向にかなり
な設置スペースが必要となる。従って、ボイラの設置状
況からすると、効率の悪いものになり、また、前記上昇
管２３は湾曲部分を含むため製作コストも高くつくこと
から、コンパクトで低コストの電気式貫流ボイラが要望
されている。[0003] In the electric once-through boiler having the above configuration, the upper header 24 and the lower header 21 are formed in a cylindrical shape, and the plurality of vertical water pipes 22 are connected in a single row.
When installing a boiler, a considerable installation space is required in the depth direction or the lateral direction. Therefore, the installation situation of the boiler is inefficient, and since the riser pipe 23 includes a curved portion, the production cost is high. Therefore, a compact and low-cost electric once-through boiler is demanded. .
【０００４】[0004]
【発明が解決しようとする課題】この発明は、上述の問
題点に鑑みなされたものであって、ボイラ設置効率のよ
いコンパクトで低コストの電気式貫流ボイラを提供する
ことを目的とするものである。SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems, and has as its object to provide a compact and low-cost electric once-through boiler having a high boiler installation efficiency. is there.
【０００５】[0005]
【課題を解決するための手段】即ち、この発明は、上部
ヘッダと下部ヘッダとを複数の水管で接続し、前記上部
ヘッダに蒸気吐出管を、前記下部ヘッダに給水管をそれ
ぞれ接続してなる貫流ボイラにおいて、前記水管の上端
部を前記上部ヘッダ内に突出させ、この水管の上端部と
上部ヘッダの内壁上面との間に隙間を設け、水管の突出
部における上部ヘッダの内壁下面近傍個所に開口部を穿
設し、前記水管内に電熱ヒータを挿入し、この電熱ヒー
タを前記上部ヘッダの上部に固定したことを第１の特徴
としている。また、この発明は、上部ヘッダと下部ヘッ
ダとを複数の水管で接続し、前記上部ヘッダに蒸気吐出
管を、前記下部ヘッダに給水管をそれぞれ接続してなる
貫流ボイラにおいて、前記水管の上端部を前記上部ヘッ
ダ内に突出させ、この水管 の上端部と上部ヘッダの内壁
上面との間に隙間を設け、前記水管内に電熱ヒータを挿
入し、この電熱ヒータを上部ヘッダの上部に固定し、前
記上部ヘッダと前記下部ヘッダとの間に電極棒を備えた
水位制御管を設け、この水位制御管の上端部を上部ヘッ
ダの内壁下面より突出させないで接続したことを第２の
特徴としている。さらに、この発明は、前記水管を複数
列平行に配設したことを第３の特徴としている。 That is, the present invention provides an
Connect the header and lower header with multiple water pipes,
Steam discharge pipe on the header and water supply pipe on the lower header
In the once-through boiler, each of which is connected,
Part into the upper header, and the upper end of this water pipe and
Provide a gap between the upper header and the upper surface of the inner wall, and project the water pipe.
A hole near the bottom surface of the inner wall of the upper header
And an electric heater inserted into the water pipe,
The first characteristic is that the data is fixed to the upper part of the upper header.
And The present invention also relates to an upper header and a lower head.
And water through multiple water pipes, and discharge steam to the upper header.
A pipe is formed by connecting a water supply pipe to the lower header.
In a once-through boiler, connect the upper end of the water pipe to the upper head.
The upper end of the water pipe and the inner wall of the upper header.
A gap is provided between the water pipe and the upper surface, and an electric heater is inserted into the water pipe.
And fix the electric heater to the top of the upper header.
An electrode rod was provided between the upper header and the lower header.
Provide a water level control pipe, and attach the upper end of this water level control pipe to the upper head.
The connection without projecting from the lower surface of the inner wall of the
Features. Furthermore, the present invention provides a method for manufacturing
The third feature is that they are arranged in parallel with each other.
【０００６】[0006]
【作用】この発明によれば、水管上端部と上部ヘッダ内
壁上面との間に所定の隙間Ｓを設けるとともに、水管の
上部ヘッダ内突出部に上部ヘッダ内の貯留水を水管に戻
すための開口部を設けたことにより、蒸気の乾き度が向
上する。また、水管の配列を複数列平行に配設したの
で、ボイラの占有スペースが小さくなり設置効率が高ま
る。 According to the present invention, the upper end of the water pipe and the inside of the upper header are provided.
A predetermined gap S is provided between the water pipe and the upper surface of the water pipe.
By providing an opening in the upper header projection to return the water stored in the upper header to the water pipe, the dryness of steam is improved.
Up. In addition, since the water pipes are arranged in multiple rows in parallel, the space occupied by the boiler is reduced and the installation efficiency is increased.
You.
【０００７】[0007]
【実施例】以下、この発明の実施例を図面に基づいて詳
細に説明する。図１は、この発明を実施した電気式貫流
ボイラの缶体を上面より見た説明図、図２は、図１のＡ
−Ａ線で切断し側面より見た説明図である。図１〜図２
において、方形に形成した上部ヘッダ１、同じく方形に
形成した下部ヘッダ２を備え、両ヘッダの間に水管３を
複数列平行に配設している。水管３の上端部を上部ヘッ
ダ１内に突出させ、この上端部と上部ヘッダ１の内壁上
面との間に所定の隙間Ｓを形成している。前記水管３の
突出部において、上部ヘッダ１の内壁下面近傍個所に所
要の開口部３ａを穿設している。蒸気吐出管４を前記上
部ヘッダ１の上面所定位置に接続している。給水管５の
一端を下部ヘッダ２に、他端を給水タンク６にそれぞれ
接続し、途中に給水ポンプ７を挿入している。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory view of a can body of an electric once-through boiler embodying the present invention as viewed from above, and FIG.
It is explanatory drawing cut | disconnected by the -A line and seen from the side surface. 1 and 2
In the above, the upper header 1 formed in a square,
A water pipe 3 is provided between both headers.
Multiple rows are arranged in parallel. Connect the upper end of the water pipe 3 to the upper
The upper end and the inner wall of the upper header 1.
A predetermined gap S is formed between the first and second surfaces. Of the water pipe 3
In the protruding part, at a location near the lower surface of the inner wall of the upper header 1
A necessary opening 3a is formed. Place the steam discharge pipe 4 above
It is connected to a predetermined position on the upper surface of the section header 1. Of water pipe 5
One end to the lower header 2 and the other end to the water tank 6
The connection is made, and the water supply pump 7 is inserted on the way.
【０００８】前記水管３内に電熱ヒータ８を前記上部ヘ
ッダ１の上部より挿入し、この電熱ヒータ８を上部ヘッ
ダ１に固定している。この電熱ヒータ８は、市場性のあ
る標準品で、図２に示すように、全長Ｌに対し発熱部の
寸法Ｌ’が比較的長くなっている。前記複数の水管３の
うち１本を水位制御用水管３ｂとし、この水位制御用水
管３ｂには電極棒９を上部ヘッダ１の上部より挿入し固
定している。前記給水タンク６および給水ポンプ７は、
上部ヘッダ１と下部ヘッダ２との間で水管３に接触しな
い空間部に、それぞれ適宜の手段で配設しボイラのコン
パクト化を図っている。An electric heater 8 is inserted into the water pipe 3 from above the upper header 1, and the electric heater 8 is fixed to the upper header 1. The electric heater 8 is a standard that is marketable, as shown in FIG. 2, the heat generating portion to the total length L
The dimension L ' is relatively long . The previous SL one of the plurality of water tubes 3 and the water level control water tube 3b, and the electrode rod 9 inserted from the top of the upper header 1 fixed to the water level control water tube 3b. The water supply tank 6 and the water supply pump 7
The space portion does not contact the water tubes 3 between the upper header 1 and the lower header 2, it is I FIG compact arrangement and to the boiler by an appropriate means, respectively.
【０００９】つぎに、上述の実施例の電気式貫流ボイラ
の作用を説明する。通常、蒸気吐出管４から供給する蒸
気は一定の乾き度が要求されるため、水管３内の水位か
ら蒸気吐出管４までの間には所定の空間が必要とされて
いる。即ち、この空間で蒸気と水滴を分離している。そ
こで、従来の電気式貫流ボイラでは、図６に示すように
電熱ヒータの発熱部より上部まで缶水を入れ、上昇管２
３と上部ヘッダ２４とで蒸気の乾き度を確保している。
この発明の実施例では、水管３の上端部を上部ヘッダ１
内に突出させ、この上端部と上部ヘッダ１の内壁上面と
の間に所定の隙間Ｓを形成したことにより、水管３内で
発生した蒸気と沸騰水が二相流となって前記ヒータ８の
発熱部をぬらし発熱部の過熱を防止する。そして、隙間
Ｓより流出する蒸気は上部ヘッダ１の端部に接続した蒸
気吐出管４より所定の乾き度の蒸気となって外部に供給
される。上部ヘッダ１内の水滴は、水管３の突出部にお
いて上部ヘッダ１の内壁下面近傍個所に穿設した開口部
３ａより水管３内に流入する。また、図２に示すよう
に、従来の上昇管を不要にし、複数列平行に配設した垂
直水管３内で缶水を電熱ヒータ８で加熱して蒸気とし、
上部ヘッダ１を介して供給するので、従来の水管を単列
配設したものに比しコンパクトで設置効率のよい電気式
貫流ボイラとなる。Next, the operation of the electric once-through boiler of the above embodiment will be described. Usually, the steam supplied from the steam discharge pipe 4 a certain dryness degree is required, between the water level in the water pipe 3 until the vapor discharge pipe 4 there is a need for a given space. That is, steam and water droplets are separated in this space. Therefore, in a conventional electric once-through boiler, as shown in FIG.
3 and the upper header 24 ensure the dryness of the steam.
In the embodiment of the present invention, the upper end of the water pipe 3 is connected to the upper header 1.
And a predetermined gap S is formed between the upper end portion and the upper surface of the inner wall of the upper header 1, so that steam and boiling water generated in the water pipe 3 become a two-phase flow to form the heater 8. Wet the heating part to prevent overheating of the heating part. The steam flowing out from the gap S is supplied to the outside as steam having a predetermined dryness from a steam discharge pipe 4 connected to an end of the upper header 1.
Is done. Water droplets in the upper header 1
And an opening formed near the lower surface of the inner wall of the upper header 1
It flows into the water pipe 3 from 3a. Further, as shown in FIG. 2, the conventional rising pipe is not required, and the can water is heated by the electric heater 8 into steam in the vertical water pipes 3 arranged in a plurality of rows in parallel to form steam,
Since the water is supplied through the upper header 1, the electric once-through boiler is more compact and more efficient in installation than the conventional water pipes arranged in a single row.
【００１０】つぎに、前記実施例（図１〜図２）にかわ
る実施例を図３〜図４に基づいて説明する。図３〜図４
に示す実施例は、上部ヘッダ１と下部ヘッダ２との間に
配設した水管３とは別に専用の水位制御管１０を設け、
この水位制御管１０の上端部を上部ヘッダ１の内壁下面
より突出させないで接続し、上部ヘッダ１内の水を水位
制御 管１０を介して下部ヘッダ２へ流入させるようにし
たものである。したがって、この実施例では、水位制御
管１０の開口端部が前記実施例（図１〜図２）における
水管３の開口部３ａと同様な働きをすることになる。前
記水位制御管１０は、電極棒１１を備えている。 Next, an embodiment which is an alternative to the above embodiment (FIGS. 1 and 2) will be described with reference to FIGS. 3 and 4
The embodiment shown, the dedicated level control pipe 10 separately from the water pipe 3 which is arranged between the upper part header 1 and the lower header 2 is provided,
The upper end of the water level control pipe 10 is connected without protruding from the lower surface of the inner wall of the upper header 1, and the water in the upper header 1 is brought to the water level.
It is designed to flow into the lower header 2 via the control pipe 10 . Thus, in this embodiment, so that the open end of the water level control pipe 10 is the same function as the open mouth portion 3a of the water tubes 3 in the embodiment (FIGS. 1-2). Previous
The water level control pipe 10 includes an electrode rod 11.
【００１１】[0011]
【発明の効果】以上説明したように、この発明は、上部
ヘッダと下部ヘッダとの間に複数の水管を複数列平行に
配設し、これら水管の上端部を上部ヘッダ内に突出さ
せ、この上端部と上部ヘッダの内壁上面との間に所定の
隙間Ｓを設け、前記水管突出部における上部ヘッダ内壁
下面の近傍個所に所要の開口部を穿設した缶体構造とし
たので、従来の上昇管を備えた水管単列構造の缶体に比
し、コンパクトでボイラ設置効率がよく、しかも、低コ
ストで蒸気発生効率のよい電気式貫流ボイラを提供する
ことができる。As described above, according to the present invention, a plurality of water pipes are arranged in parallel in a plurality of rows between an upper header and a lower header, and the upper ends of these water pipes are projected into the upper header. A predetermined gap S is provided between the upper end portion and the upper surface of the inner wall of the upper header, and the inner wall of the upper header at the water pipe protrusion is provided.
The can body structure has a required opening in the vicinity of the lower surface, so it is more compact, has better boiler installation efficiency, and is lower in cost than a conventional water tube single-row can body equipped with a riser. Thus, it is possible to provide an electric once-through boiler with high steam generation efficiency.
【図１】この発明を実施した電気式貫流ボイラの缶体を
上面より見た説明図である。FIG. 1 is an explanatory view of a can body of an electric once-through boiler embodying the present invention as viewed from above.
【図２】図１のＡ−Ａ線で切断し側面より見た説明図で
ある。FIG. 2 is an explanatory view taken along a line AA in FIG. 1 and viewed from a side.
【図３】図１〜図２の実施例にかわる実施例の缶体を上
面より見た説明図である。FIG. 3 is an explanatory view of a can body of an embodiment that is an alternative to the embodiment of FIGS.
【図４】図３のＢ−Ｂ線で切断し側面より見た説明図で
ある。FIG. 4 is an explanatory view taken along a line BB in FIG. 3 and viewed from a side.
【図５】従来の電気式貫流ボイラの缶体構造を上面より
見た説明図である。FIG. 5 is an explanatory view of a can body structure of a conventional electric once-through boiler as viewed from above.
【図６】図５のＣ−Ｃ線で切断し側面より見た断面説明
図である。FIG. 6 is an explanatory sectional view taken along a line CC in FIG. 5 and viewed from a side surface.
１ 上部ヘッダ ２ 下部ヘッダ ３ 水管 ３ａ 開口部 ４ 蒸気吐出管 ５ 給水管 ８ 電熱ヒータ １０ 水位制御管１１ 電極棒 DESCRIPTION OF SYMBOLS 1 Upper header 2 Lower header 3 Water pipe 3a Opening 4 Steam discharge pipe 5 Water supply pipe 8 Electric heater 10 Water level control pipe 11 Electrode rod
Claims (3)
水管３で接続し、前記上部ヘッダ１に蒸気吐出管４を、
前記下部ヘッダ２に給水管５をそれぞれ接続してなる貫
流ボイラにおいて、前記水管３の上端部を前記上部ヘッ
ダ１内に突出させ、この水管３の上端部と上部ヘッダ１
の内壁上面との間に隙間Ｓを設け、水管３の突出部にお
ける上部ヘッダ１の内壁下面近傍個所に開口部３ａを穿
設し、前記水管３内に電熱ヒータ８を挿入し、この電熱
ヒータ８を前記上部ヘッダ１の上部に固定したことを特
徴とする電気式貫流ボイラの缶体構造。1. An upper header 1 and a lower header 2
Connected by a water pipe 3, a steam discharge pipe 4 is connected to the upper header 1,
A water supply pipe 5 is connected to the lower header 2 respectively.
In the flow boiler, connect the upper end of the water pipe 3 to the upper head.
The water pipe 3 and the upper header 1
A gap S is provided between the inner surface of the water pipe 3 and
An opening 3a at a location near the lower surface of the inner wall of the upper header 1
And an electric heater 8 is inserted into the water pipe 3,
A can body structure for an electric once -through boiler, wherein a heater 8 is fixed to an upper portion of the upper header 1 .
水管３で接続し、前記上部ヘッダ１に蒸気吐出管４を、
前記下部ヘッダ２に給水管５をそれぞれ接続してなる貫
流ボイラにおいて、前記水管３の上端部を前記上部ヘッ
ダ１内に突出させ、この水管３の上端部と上部ヘッダ１
の内壁上面との間に隙間Ｓを設け、前記水管３内に電熱
ヒータ８を挿入し、この電熱ヒータ８を上部ヘッダ１の
上部に固定し、前記上部ヘッダ１と前記下部ヘッダ２と
の間に電極棒１１を備えた水位制御管１０を設け、この
水位制御管１０の上端部を上部ヘッダ１の内壁下面より
突出させないで接続したことを特徴とする電気式貫流ボ
イラの缶体構造。2. An upper header 1 and a lower header 2
Connected by a water pipe 3, a steam discharge pipe 4 is connected to the upper header 1,
A water supply pipe 5 is connected to the lower header 2 respectively.
In the flow boiler, connect the upper end of the water pipe 3 to the upper head.
The water pipe 3 and the upper header 1
A gap S is provided between the water pipe 3 and the upper surface of the inner wall of the water pipe.
The heater 8 is inserted, and the electric heater 8 is connected to the upper header 1.
Fixed to the upper part, the upper header 1 and the lower header 2
A water level control tube 10 provided with an electrode rod 11 is provided between
The upper end of the water level control pipe 10 from the lower surface of the inner wall of the upper header 1
A can body structure for an electric once -through boiler, wherein the can body is connected without protruding .
を特徴とする請求項１または請求項２に記載の電気式貫
流ボイラの缶体構造。3. A can body structure for an electric once-through boiler according to claim 1, wherein a plurality of said water pipes 3 are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7445494A JP2697604B2 (en) | 1994-03-18 | 1994-03-18 | Can structure of electric once-through boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7445494A JP2697604B2 (en) | 1994-03-18 | 1994-03-18 | Can structure of electric once-through boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07260101A JPH07260101A (en) | 1995-10-13 |
| JP2697604B2 true JP2697604B2 (en) | 1998-01-14 |
Family
ID=13547712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7445494A Expired - Lifetime JP2697604B2 (en) | 1994-03-18 | 1994-03-18 | Can structure of electric once-through boiler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2697604B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010084877A (en) * | 2000-02-29 | 2001-09-06 | 조중휴 | Electric boiler |
| JP5076646B2 (en) * | 2007-05-25 | 2012-11-21 | 三浦工業株式会社 | Electric boiler |
-
1994
- 1994-03-18 JP JP7445494A patent/JP2697604B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07260101A (en) | 1995-10-13 |
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