JPS60240949A - Safety device for instantaneous gas hot water supplier - Google Patents

Safety device for instantaneous gas hot water supplier

Info

Publication number
JPS60240949A
JPS60240949A JP59096849A JP9684984A JPS60240949A JP S60240949 A JPS60240949 A JP S60240949A JP 59096849 A JP59096849 A JP 59096849A JP 9684984 A JP9684984 A JP 9684984A JP S60240949 A JPS60240949 A JP S60240949A
Authority
JP
Japan
Prior art keywords
gas
heat exchanger
hole
flame
valve
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.)
Pending
Application number
JP59096849A
Other languages
Japanese (ja)
Inventor
Kosaku Kubo
久保　幸作
Takao Nishiyama
西山　隆夫
Yutaka Kamimura
豊 上村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP59096849A priority Critical patent/JPS60240949A/en
Publication of JPS60240949A publication Critical patent/JPS60240949A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
    • F23N5/126—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/245—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/22—Pilot burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/04—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using bimetallic elements

Abstract

PURPOSE:To exactly interrupt the supply of a gas by detecting the overflow of flame from the hole of the body of heat exchanger due to rise of internal pressure when the fins of the heat exchanger are blocked regardless of the kind of gases and the dispersion of dimensions by providing a bymetal adjacently to the hole of the heat exchanger body. CONSTITUTION:A thermo valve 10 provided in the usual gas stopper 9 is turned by pushing, or at the same time as the pushing operation ignition operation is made. Whereupon, flame is formed in the pilot burner 11, an electromotive force is generated in a thermocouple 12 for seed fire, and the thermo valve 10 is attracted. Afterwards, a water valve 13 is operated to open a water-pressure wide vavle, gas is jetted from the nozzle holder 14, and a gas-air mixed gas is formed and a main burner 15 is ignited. When the finned portion 17 of the heat exchanger 16 is blocked after the lapse of several years of use and CO begins to generate, the internal pressure of the combustion chamber 18 is raised, flame goes out from a hole 19 provided in the inner body and contacted with a bymetal provided adjacently to the hole 19, a switch is turned off by sensing the temperature, the safety valve 10 is released, and the supply of gas is interrupted.

Description

【発明の詳細な説明】 産業上の利用分野 本発明はガス瞬間湯沸器の不完全燃焼防止装置で特に熱
交換器のフィン詰りの検知に威力を発揮する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is an incomplete combustion prevention device for a gas instantaneous water heater, and is particularly effective in detecting clogging of fins in a heat exchanger.

従来例の構成とその問題点 第１図は従来例の構成を示すものである。Conventional configuration and its problems FIG. 1 shows the configuration of a conventional example.

以下図に従って説明オすると点火源で点火されたガス空
気混合気はメインバーナ１で燃焼し排ガスは燃焼室２、
フィン部３を径て排出される。ここで、長期間の器具使
用によってフィン部ａの詰りか発生した時、燃焼室の圧
力検出できる位置よりパイロットバーナ７に向って取り
付けられた環流管４によって排ガス中のＣＯ２をパイロ
ットノ；−すの火炎に吹き付け、かつその時に燃焼室２
の一部に取付けた逆バイアス熱電対５で、燃焼室２内の
雰囲気温度を感知して、パイロットノζ−すに取付けた
種火用熱電対８との発生起電力差を小さクシ、安全弁６
が離脱してガスを遮断する。この時、ガス種により逆バ
イアス熱電対５のさし込み代を変化させ、対応しなけれ
ばならず、さし込み代の管理が極めて難かしい。壕だ、
メインバーナ１と逆バイアス熱電対の位置関係は、燃焼
中の二次空気の影響を受けやすく、ガス遮断ポイントを
ばらつかす大きな要因となる。−力源流管４も同様にパ
イロットバーナ７と種火用熱電対８との両方の位置関係
を管理しなければならす、ガス遮断のバラつきに大きな
影響を与える。According to the diagram below, the gas-air mixture ignited by the ignition source burns in the main burner 1, and the exhaust gas flows into the combustion chamber 2.
It is discharged through the fin portion 3. Here, when the fin part a becomes clogged due to long-term use of the appliance, the CO2 in the exhaust gas is removed from the pilot burner by the reflux pipe 4, which is installed toward the pilot burner 7 from the position where the pressure in the combustion chamber can be detected. , and at that time the combustion chamber 2
A reverse bias thermocouple 5 attached to a part of the combustion chamber 2 detects the atmospheric temperature in the combustion chamber 2, and reduces the difference in electromotive force between it and the pilot flame thermocouple 8 attached to the pilot nozzle. 6
leaves and cuts off the gas. At this time, it is necessary to change the insertion distance of the reverse bias thermocouple 5 depending on the gas type, and it is extremely difficult to manage the insertion distance. It's a trench.
The positional relationship between the main burner 1 and the reverse bias thermocouple is susceptible to the influence of secondary air during combustion, and is a major factor in varying the gas cutoff point. - The power source flow pipe 4 also has a large influence on the variation in gas cutoff, which requires management of the positional relationship of both the pilot burner 7 and the pilot flame thermocouple 8.

発明の目的 本発明は前記従来例にみるばらつきをなくし熱交換器の
フィン詰り時の不完全燃焼による多量のＣＯ発生前に確
実にガスを遮断し、安全性の高いガス瞬間湯沸器を提供
することを目的としている。Purpose of the Invention The present invention eliminates the variations seen in the conventional example and reliably shuts off gas before a large amount of CO is generated due to incomplete combustion when the fins of a heat exchanger are clogged, thereby providing a highly safe gas instantaneous water heater. It is intended to.

発明の構成 上記目的を達するため、本発明の安全装置は、熱交換器
内胴に孔を設け、孔に近接してバイメタルスイッチを設
け、ガス種、寸法バラツキに関係なく、熱交換器のフィ
ン詰り時に内圧が上昇して炎が孔からあふれるのを感知
し確実にガスを遮断するものである。Structure of the Invention In order to achieve the above object, the safety device of the present invention provides a hole in the inner body of the heat exchanger, and a bimetal switch is provided adjacent to the hole, so that the fins of the heat exchanger can be fixed regardless of the gas type or size variations. It senses when the internal pressure rises and flame overflows from the hole when the hole becomes clogged, and reliably shuts off the gas.

実施例の説明 第２図は本実施例の構成図である。以下図面に基づき説
明する。DESCRIPTION OF THE EMBODIMENT FIG. 2 is a block diagram of the present embodiment. This will be explained below based on the drawings.

第２図において、通常ガス栓９内に併設しているサーモ
パルプ１０を押し回し、あるいは押し操作と同時に点火
操作をし、パイロットバーナ１１％　Ｋ火炎が形成され
種火用熱電対１２に起電力が生じサーモパルプ１０は吸
着される。その後水バルブ１３の操作により水圧法パル
プを開にし、ノズルホルダ１４よりガスが噴出し、ガス
空気混合気となってメーンバーナ１５に着火する。In Fig. 2, when the thermopulp 10 normally attached to the gas valve 9 is pushed around or ignited at the same time as the pushing operation, a 11% K flame is formed in the pilot burner and an electromotive force is generated in the pilot thermocouple 12. occurs and the thermopulp 10 is adsorbed. Thereafter, the water valve 13 is operated to open the hydraulic pulp, gas is ejected from the nozzle holder 14, becomes a gas-air mixture, and ignites the main burner 15.

ここで、器具使用直後は、熱交換器１６のフィン部１７
が目づまり少く、ドラフトにより燃焼した排ガスはフィ
ン部１７を通り排出される。ところが使用後、数年経つ
と熱交換器１６のフィン部１７が目づまりしてきてＣＯ
を発生してくると燃焼室内１８の内圧が上昇してぐる。Here, immediately after using the device, the fin portion 17 of the heat exchanger 16
is less likely to be clogged, and the exhaust gas combusted by the draft is discharged through the fin portion 17. However, after several years of use, the fin portion 17 of the heat exchanger 16 becomes clogged and CO
As this occurs, the internal pressure in the combustion chamber 18 increases.

内圧の上昇により火炎が内胴に設けられた穴１９を通り
外へあふれる。あふれた火炎が、穴１９に近接して設け
られたバイメタルスイッチに触れ、温度感知してスイッ
チが切れ、安全弁１０は離脱し、ガスは遮断される。Due to the increase in internal pressure, the flame overflows to the outside through a hole 19 provided in the inner shell. The overflowing flame touches the bimetallic switch provided close to the hole 19, senses the temperature and turns off the switch, the safety valve 10 is removed and the gas is cut off.

このように本実施例によればＡガス、Ｂガス、Ｃガスの
ガス種に関係なく、かつバラつくことなく確実にＣＯが
発生する前にガスを遮断する安全な装置である。As described above, the present embodiment is a safe device that reliably shuts off the gases before CO is generated, regardless of the types of gases A, B, and C, without any variation.

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

（１）熱交換器フィン詰り時に、確実に安全弁を離脱し
、ガスを遮断する。(1) When the heat exchanger fins become clogged, the safety valve is reliably removed and the gas is shut off.

（２）　ガス種に関係なく安全弁の遮断ポイントを容易
に設定できる。(2) The cutoff point of the safety valve can be easily set regardless of the gas type.

（３）取付寸法、位置関係によるバラつきの影響が少な
く管理しやすい。(3) Easy to manage with less influence of variations due to mounting dimensions and positional relationships.

（４装置の確実な動作を得ることにより、安全でしかも
安心して器具を使用出来る。(4) By ensuring the reliable operation of the equipment, you can use the equipment safely and with peace of mind.

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

第１図は従来例を示す構成図、第２図は本発明の一実施
例を示す構成図である。 １．１５−・・・メーンバーナ、３，１７・・・熱交換
器フィン部、４・・・・環流管、５・・・・・逆バイア
ス熱電対、６．１０・・安全弁、７．１１　・・・パイ
ロットバーナ、１９・・・・孔、２０・・・・・バイメ
タルスイッチ。FIG. 1 is a block diagram showing a conventional example, and FIG. 2 is a block diagram showing an embodiment of the present invention. 1.15- Main burner, 3,17 Heat exchanger fin section, 4 Reflux pipe, 5 Reverse bias thermocouple, 6.10 Safety valve, 7.11 ... Pilot burner, 19 ... hole, 20 ... bimetal switch.

Claims (1)

【特許請求の範囲】[Claims] 水通路と熱交換器とガス通路と燃焼室とを備え、前記ガ
ス通路には安全弁を内蔵し、前記安全弁とガス通路より
導かれた種火パイロットにより、熱起電力を発生するエ
レメントと、熱交換器の内胴の一部に開口部を設け、近
接してバイメタルスイッチを直列に接続して構成するガ
ス瞬間湯沸器の安全装置。It is equipped with a water passage, a heat exchanger, a gas passage, and a combustion chamber, and the gas passage has a built-in safety valve, and a pilot flame pilot led from the safety valve and the gas passage causes an element that generates a thermoelectromotive force and a heat A safety device for gas instantaneous water heaters that consists of an opening in a part of the inner body of the exchanger and a bimetal switch connected in series in the vicinity.
JP59096849A 1984-05-15 1984-05-15 Safety device for instantaneous gas hot water supplier Pending JPS60240949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59096849A JPS60240949A (en) 1984-05-15 1984-05-15 Safety device for instantaneous gas hot water supplier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59096849A JPS60240949A (en) 1984-05-15 1984-05-15 Safety device for instantaneous gas hot water supplier

Publications (1)

Publication Number Publication Date
JPS60240949A true JPS60240949A (en) 1985-11-29

Family

ID=14175942

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59096849A Pending JPS60240949A (en) 1984-05-15 1984-05-15 Safety device for instantaneous gas hot water supplier

Country Status (1)

Country Link
JP (1) JPS60240949A (en)

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