JPS5981438A - Water boiler - Google Patents

Abstract

PURPOSE:To prevent the wall of a combustion chamber from corroding and to obtain a superior heat insulating effect by an air duct, by cooling the wall of the combustion chamber with air for combustion to be fed to a burner part. CONSTITUTION:It is possible to prevent a can body 1 from corroding caused by superheating and to obtain a water heater having a long life and is highly reliable as an air duct 11A provided outside of a combustion chamber 2 is connected with an inner cylinder 8 constituting a burner 4 and the can body 1 is cooled by air for combustion to be fed by a blower 6 at the time of operation of the water heater.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、缶体内にパイプの熱交換器を設けた温水ボイ
ラに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hot water boiler having a pipe heat exchanger provided within the can.

従来例の構成とその問題点 ｕｆ＝来この種の温水ボイラは、バーナにより形成され
る炎からの高熱が外部へ放熱しないように燃焼室の内壁
全面に断熱材を設けているが、長期間使用するに従い、
断熱材が熱によって破損され、燃焼室壁が腐食されて運
転することが不可能となる。Conventional configuration and its problems uf = Next This type of hot water boiler is equipped with insulation material all over the inner wall of the combustion chamber to prevent the high heat from the flame formed by the burner from radiating to the outside. As you use it,
The heat damages the insulation and corrodes the combustion chamber walls, making it impossible to operate.

このような従来の温水ボイラを第１図、第２図にもとづ
いて説明する。第１図において１は温水ボイラの缶体で
、この缶体１内の下部に燃焼室２゜」二部に熱交換室３
が設けられている。４は燃焼室２に設けられたバーナで
、このバーナ４は燃料噴霧用のノズル６、燃焼用空気を
供給する送風機６゜炎孔了を有する中筒８．燃料を気化
させる助燃筒９、バーナリング１０等で構成されている
。１１は燃焼室２の内壁に設けられた断熱材、１２は熱
交換室３に取付けられたパイプ式の熱交換器で、一端に
給水口１３．他端に給湯口１４が設けられている。１ｒ
、、ｉ突に連結される排気筒である。Such a conventional hot water boiler will be explained based on FIGS. 1 and 2. In Fig. 1, reference numeral 1 indicates the can body of a hot water boiler, and inside the can body 1, there is a combustion chamber 2° in the lower part, and a heat exchange chamber 3 in two parts.
is provided. 4 is a burner provided in the combustion chamber 2, and this burner 4 has a nozzle 6 for fuel spraying, a blower for supplying combustion air, and a middle cylinder 8 having a 6° flame hole. It consists of an auxiliary combustion tube 9 that vaporizes fuel, a burner ring 10, and the like. 11 is a heat insulating material provided on the inner wall of the combustion chamber 2, 12 is a pipe-type heat exchanger attached to the heat exchange chamber 3, and a water supply port 13 is provided at one end. A hot water supply port 14 is provided at the other end. 1r
, , is an exhaust pipe connected to the i-tube.

このような構成〕・らなる温水ボイラは、バ〜す４に形
成される炎、あるいは高熱の燃焼ガスによって、燃焼室
２内壁に設けられた断熱材１１が次第に劣化して破損し
、更に燃焼室壁即ち缶体１が腐食されるという欠点があ
った。In a hot water boiler with such a configuration, the heat insulating material 11 provided on the inner wall of the combustion chamber 2 gradually deteriorates and is damaged by the flame formed in the bath 4 or the high-temperature combustion gas, and further combustion occurs. There was a drawback that the chamber wall, that is, the can body 1 was corroded.

発明の目的 本発明は上記従来の欠点を解消するもので、燃焼室壁が
バーナに形成される炎や高熱によって腐食されることの
ない温水ボイラの提供を目的とするものである。OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks and aims to provide a hot water boiler in which the walls of the combustion chamber are not corroded by the flames and high heat formed in the burner.

発明の構成 」＝記目的を達成するだめ、本発明の温水ボイラは、圧
力噴霧による霧化手段を、有底筒状の缶体に設けられた
開口部から燃焼室内に向けて臨ませ、かつ燃焼用空気の
供給手段として前記燃焼室中央部に７周壁に多数の空気
噴出孔を有する中筒を立設し、この中筒の周囲に前記霧
化手段と対向して開口部を設けだ助燃筒を同心上に立設
するとともに、前記缶体の内壁又は外壁に設けられだ有
底筒状の風胴上部にパイプ状の熱交換器を載置し、前記
風胴の上端に送風機を臨ませ、前記風胴と前記中筒とを
連通ずる構成であり、バーす部へ供給する燃焼用空気で
燃焼室壁を冷却することにより、燃焼室壁の腐食が防止
され、しかも風胴で優れた断熱効果を得ることができる
という効果を有するものである。In order to achieve the object described in "Structure of the Invention", the hot water boiler of the present invention has an atomizing means using pressure spray facing into the combustion chamber from an opening provided in a bottomed cylindrical can body, and As a means for supplying combustion air, a middle cylinder having a large number of air injection holes on seven peripheral walls is provided in the central part of the combustion chamber, and an opening is provided around the middle cylinder facing the atomizing means. The cylinders are arranged concentrically, a pipe-shaped heat exchanger is placed on the top of a bottomed cylindrical wind cylinder provided on the inner or outer wall of the can body, and a blower is placed at the upper end of the wind cylinder. The structure is such that the wind cylinder and the middle cylinder communicate with each other, and by cooling the combustion chamber wall with the combustion air supplied to the bar part, corrosion of the combustion chamber wall is prevented. This has the effect that it is possible to obtain a heat insulating effect.

実施例の説明 以下、本発明の一実施例を第３図、第４図に基づいて説
明する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

なお、従来例と同じ部材については、同一符号を付して
説明する。Note that the same members as in the conventional example will be described with the same reference numerals.

第３図において、１は温水ボイラの缶体で、この缶体１
の下部に燃焼室２．上部に熱交換室３が設けられている
。４は燃焼室２に設けられたバーナで、このバーナ４は
燃料の霧化手段であるノズル６、燃焼用空気η供給手段
である送風機６．炎孔７を多数有する中筒８．ノズル６
と対向する位置に開口部を有し、ノズル５から噴出され
た燃料を気化させる助燃筒９．バーナリンク１０等で構
成されている。１１Ａは有底筒状の風胴で、燃焼室２の
外側に設けられ、上端部が缶体１に密着さセ れている。この風胴１１の上部送風機６の吹８旧」が接
続され、下部は中筒８と連通されているａ１２は熱交換
室３に設けられ／ヒバイブ式の熱交換器で、一端に設け
られた給水口１３．他端に設けられた給湯口弁１４は、
風胴１１の上に載置されている。１６は煙突に接続され
る排気筒である。In Fig. 3, 1 is the can body of the hot water boiler, and this can body 1
Combustion chamber 2. A heat exchange chamber 3 is provided in the upper part. 4 is a burner provided in the combustion chamber 2, and this burner 4 includes a nozzle 6 which is a means for atomizing fuel, and a blower 6 which is a means for supplying combustion air η. Middle cylinder 8 with many flame holes 7. Nozzle 6
An auxiliary combustion tube 9 which has an opening at a position facing the nozzle 5 and vaporizes the fuel ejected from the nozzle 5. It is composed of burner links 10 and the like. 11A is a cylindrical wind barrel with a bottom, which is provided outside the combustion chamber 2, and whose upper end is in close contact with the can body 1. The blower 8 of the upper blower 6 of this wind cylinder 11 is connected, and the lower part communicates with the middle cylinder 8. A12 is installed in the heat exchange chamber 3 and is a Hibaib type heat exchanger, installed at one end. Water supply port 13. The hot water supply port valve 14 provided at the other end is
It is placed on the wind barrel 11. 16 is an exhaust pipe connected to the chimney.

以下上記構成における作用について説明する。The operation of the above configuration will be explained below.

温水ボイラを運転する時、燃料をノズル５がら助燃筒９
内へ噴出し、一方燃焼用空気を送風機６により、風胴１
１八を経て中筒８へ供給すると、炎孔７から燃焼室２内
へ吹き出される。この時態別に点火すると、燃焼室２の
下部でしばらく拡散燃焼を行い、燃焼室２内の温度が上
昇してくると、予混合ガス化燃焼へ移行して燃焼室２上
部で燃焼するようになる。そして高温の燃焼ガスはパイ
プ式の熱交換器１２へ導かれ、熱交換器１２に吸熱され
た後、排気ｍ１６から排出される。When operating a hot water boiler, fuel is transferred from the nozzle 5 to the auxiliary combustion tube 9.
The air for combustion is blown into the wind cylinder 1 by the blower 6.
When it is supplied to the middle cylinder 8 through the combustion chamber 18, it is blown out from the flame hole 7 into the combustion chamber 2. When ignited at this time, diffusion combustion occurs for a while in the lower part of the combustion chamber 2, and when the temperature inside the combustion chamber 2 rises, it shifts to premixed gasification combustion and burns in the upper part of the combustion chamber 2. Become. The high-temperature combustion gas is then guided to the pipe-type heat exchanger 12, where heat is absorbed, and then exhausted from the exhaust m16.

このように本実施例の温水ボイラによれば、燃焼室２の
外側に設けた風胴１１Ａとバーナ４を構成する中筒８と
を連通し、温水ボイラを運転時に送風機６で供給する燃
焼用空気により、缶体１を冷却するだめ、缶体１の過熱
による腐食を防止することかでき、長寿命で信頼性の高
い温水ボイラちを得ることができる。In this way, according to the hot water boiler of this embodiment, the wind cylinder 11A provided outside the combustion chamber 2 and the middle cylinder 8 constituting the burner 4 are connected to each other, and the combustion air is supplied by the blower 6 during operation of the hot water boiler. By cooling the can body 1 with air, corrosion due to overheating of the can body 1 can be prevented, and a hot water boiler with a long life and high reliability can be obtained.

また燃焼用空気は風胴１１Ａで予熱されて燃焼−室２内
へ供給されるため、燃焼効率を高めることができるとい
う効果を有する。Further, since the combustion air is preheated by the wind cylinder 11A and supplied into the combustion chamber 2, it has the effect of increasing combustion efficiency.

発明の効果 以上のように本発明によれば次の効果を得ることができ
る。Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

（１）燃焼室内壁は風胴内を流動する燃焼用空気によっ
て冷却されるので、異常加熱による腐食や破損が防止さ
れ、長寿命で信頼性の高い温水ボイラを得ることができ
る。(1) Since the combustion chamber walls are cooled by the combustion air flowing in the wind barrel, corrosion and damage due to abnormal heating are prevented, and a hot water boiler with a long life and high reliability can be obtained.

（２）燃焼用空気は風胴で予熱されて燃焼室へ供給する
ため、燃焼効率をよくすることができる。(2) Since the combustion air is preheated in the wind barrel and supplied to the combustion chamber, combustion efficiency can be improved.

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

第１図は従来例である温水ボイラの側面図、第第４図は
同第３図のＢ−Ｂ’線における平断面図である。 １・・・缶体、５・・・・・ノズル（Ｎ化手段）、６・
・送風機（送風手段）、８・・・・中筒、９・・山助燃
筒、１１八・・・・風胴、１２・・山・熱交換器。 代理人の氏名　弁理士　中　尾　敏　男　はが１名第１
図 ５ 第３図 第４図FIG. 1 is a side view of a conventional hot water boiler, and FIG. 4 is a cross-sectional plan view taken along line BB' in FIG. 3. 1... Can body, 5... Nozzle (N conversion means), 6...
-Blower (air blowing means), 8...middle cylinder, 9...mount auxiliary combustion cylinder, 118...wind cylinder, 12...mount/heat exchanger. Name of agent: Patent attorney Toshio Nakao (1st person)
Figure 5 Figure 3 Figure 4

Claims (1)

【特許請求の範囲】[Claims] 圧力噴霧による霧化手段を、有底筒状の缶体に設けられ
た開口部から燃焼室内に向けて臨ませ、かつ燃焼用空気
の供給手段として前記燃焼室中央部に２周壁に多数の空
気噴出孔を有する中筒を立殺し、この中筒の周囲に前記
霧化手段と対向して開口部を設けた助燃筒を同心上に立
設するとともに、前記缶体の内壁又は外壁に設けられた
有底筒状の風胴」二部にパイプ状の熱交換器を載置し、
前記風胴の上端に送風機を臨捷せ、前記風胴と前記中筒
とを連通ずる構成とした温水ボイラ。An atomization means using pressure spray is placed facing into the combustion chamber from an opening provided in a bottomed cylindrical can body, and a large amount of air is provided on two peripheral walls in the center of the combustion chamber as a means for supplying combustion air. A middle cylinder having an ejection hole is stood upright, and an auxiliary combustion cylinder having an opening facing the atomizing means is installed concentrically around the middle cylinder, and a combustion auxiliary cylinder is provided on the inner or outer wall of the can body. A pipe-shaped heat exchanger is placed on the second part of the cylindrical wind barrel with a bottom.
A hot water boiler having a structure in which a blower is disposed at the upper end of the wind cylinder, and the wind cylinder and the middle cylinder are communicated with each other.