JP2003056845A - Gas combustion appliance - Google Patents
Gas combustion applianceInfo
- Publication number
- JP2003056845A JP2003056845A JP2001240034A JP2001240034A JP2003056845A JP 2003056845 A JP2003056845 A JP 2003056845A JP 2001240034 A JP2001240034 A JP 2001240034A JP 2001240034 A JP2001240034 A JP 2001240034A JP 2003056845 A JP2003056845 A JP 2003056845A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- low
- valve
- burner
- supplied
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はウォッベ指数の異な
る燃料ガスを燃焼可能なガス燃焼器具に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas combustion device capable of combusting fuel gases having different Wobbe indices.
【０００２】[0002]
【従来の技術】現在、家庭用ガス燃焼器具へ供給するガ
ス種としては、主に都市ガスとＬＰガス（プロパンを主
成分とした液化石油ガスで、以下、ＬＰＧと呼ぶ）とが
知られているが、ＬＰＧはやや高価である。そこで、最
近、安価なジメチルエーテル（以下、ＤＭＥと呼ぶ）を
ＬＰＧの代替燃料として使用することが検討されてい
る。また、ＤＭＥの供給は現在のところ十分なものでは
ないので、常にＤＭＥを使い続けることができる保障も
なく、ＤＭＥの供給が滞った場合には、ＬＰＧを使う必
要があり、今後ＬＰＧをＤＭＥに置き換えるようにして
も、当面の間はＤＭＥとＬＰＧとの並行使用をすること
も考えられている。2. Description of the Related Art Currently, city gas and LPG (liquefied petroleum gas containing propane as a main component, hereinafter referred to as LPG) are mainly known as gas species to be supplied to household gas combustion appliances. However, LPG is somewhat expensive. Therefore, recently, the use of inexpensive dimethyl ether (hereinafter referred to as DME) as an alternative fuel for LPG has been studied. Moreover, since the supply of DME is not sufficient at present, there is no guarantee that DME can always be used, and if the supply of DME is delayed, it is necessary to use LPG. In the future, LPG will be used as DME. Even if they are replaced, it is considered to use DME and LPG in parallel for the time being.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、ＤＭＥ
とＬＰＧとはウォッベ指数（以下、ＷＩと呼ぶ）が大幅
に異なるため、ＬＰＧ用の燃焼器具にそのままＤＭＥを
供給すると、単位時間当たりの発熱量（インプット）が
大幅に変化して燃焼器具の燃焼や出力などの特性が悪化
してしまうので、供給ガスがＤＭＥかＬＰＧかを判別す
る必要がある。そこで、本発明のガス燃焼器具は上記課
題を解決し、燃料ガスの種類に応じた仕様に自動的に切
り替わるガス燃焼器具を提供することを目的とする。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
Since the Wobbe index (hereinafter referred to as WI) is significantly different between LPG and LPG, if DME is directly supplied to the combustion equipment for LPG, the calorific value (input) per unit time changes significantly and combustion of the combustion equipment It is necessary to determine whether the supply gas is DME or LPG because the characteristics such as output and output deteriorate. Therefore, it is an object of the present invention to solve the above problems and provide a gas combustion appliance that automatically switches to a specification according to the type of fuel gas.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決する本発
明の請求項１記載のガス燃焼器具は、ウォッベ指数（Ｗ
Ｉ）の異なる２種類の燃料ガスを燃焼可能なメインバー
ナと、高ＷＩガスが供給されても低ＷＩガスが供給され
ても正常燃焼する両ＷＩガス用パイロットバーナと、上
記低ＷＩガスと上記高ＷＩガスとの何れか一方のガスが
供給される時は正常燃焼し、他方のガスが供給される時
は異常燃焼する片ＷＩガス用パイロットバーナと、上記
各パイロットバーナの燃焼状態をそれぞれ検知する２つ
の炎検知素子と、上記メインバーナへのガス流路を遮断
した状態で上記各パイロットバーナに点火し、上記２つ
の炎検知素子により検知した信号に応じて、該メインバ
ーナへの燃料ガス供給流量を切り替える流量切替手段と
を備えたことを要旨とする。A gas burning appliance according to claim 1 of the present invention which solves the above-mentioned problems, has a Wobbe index (W).
I) a main burner capable of burning two types of fuel gas different from each other, a pilot burner for both WI gases that normally burns regardless of whether a high WI gas is supplied or a low WI gas is supplied, the low WI gas and the above Detects the combustion state of the pilot burner for single WI gas that normally burns when one of the high WI gases is supplied and abnormally burns when the other gas is supplied, and the above-mentioned pilot burners The two flame detecting elements and the pilot burner are ignited in a state where the gas flow path to the main burner is blocked, and the fuel gas to the main burner is responsive to the signals detected by the two flame detecting elements. The gist is that it is provided with a flow rate switching means for switching the supply flow rate.
【０００５】また、本発明の請求項２記載のガス燃焼器
具は、ウォッベ指数（ＷＩ）の異なる２種類の燃料ガス
を燃焼可能なメインバーナと、高ＷＩガスが供給される
時は正常燃焼し、低ＷＩガスが供給される時は異常燃焼
する高ＷＩガス用パイロットバーナと、上記低ＷＩガス
が供給される時は正常燃焼し、上記高ＷＩガスが供給さ
れる時は異常燃焼する低ＷＩガス用パイロットバーナ
と、上記各パイロットバーナの燃焼状態をそれぞれ検知
する２つの炎検知素子と、上記メインバーナへのガス流
路を遮断した状態で上記各パイロットバーナに点火し、
上記２つの炎検知素子により検知した信号に応じて、該
メインバーナへの燃料ガス供給流量を切り替える流量切
替手段とを備えたことを要旨とする。A gas combustion apparatus according to a second aspect of the present invention is a main burner capable of combusting two types of fuel gas having different Wobbe indices (WI), and normally burns when a high WI gas is supplied. , A high WI gas pilot burner that abnormally burns when low WI gas is supplied, and a low WI that normally burns when the low WI gas is supplied and abnormally burns when the high WI gas is supplied A gas pilot burner, two flame detection elements that detect the combustion state of each pilot burner, and a gas flow path to the main burner are cut off, and each pilot burner is ignited.
The gist of the present invention is to include flow rate switching means for switching the fuel gas supply flow rate to the main burner according to the signals detected by the two flame detection elements.
【０００６】また、本発明の請求項３記載のガス燃焼器
具は、上記請求項１記載のガス燃焼器具において、上記
片ＷＩガス用パイロットバーナを、低ＷＩガスが供給さ
れる時は正常燃焼し、高ＷＩガスが供給される時は異常
燃焼する低ＷＩガス用パイロットバーナで構成すると共
に、上記メインバーナへの燃料ガス供給路として設けら
れる第１ガス供給路及び第２ガス供給路と、上記第１ガ
ス供給路中に設けられ、点火操作により開弁されると共
に、上記両ＷＩガス用パイロットバーナに備えられた上
記炎検知素子からの正常燃焼信号で開弁保持される第１
電磁弁と、上記第２ガス供給路中に設けられ、点火操作
により開弁されると共に、上記低ＷＩガス用パイロット
バーナに備えられた上記炎検知素子からの正常燃焼信号
で開弁保持される第２電磁弁と、上記第１ガス供給路中
で第１電磁弁より下流に設けられ、点火操作時のみ閉弁
する第１一時閉鎖弁と、上記第２ガス供給路中で第２電
磁弁より下流に設けられ、点火操作時のみ閉弁する第２
一時閉鎖弁とを備えたことを要旨とする。[0006] According to a third aspect of the present invention, there is provided the gas combustion instrument according to the first aspect, wherein the single WI gas pilot burner normally burns when a low WI gas is supplied. A first gas supply path and a second gas supply path which are configured as a low WI gas pilot burner that abnormally burns when high WI gas is supplied, and which are provided as fuel gas supply paths to the main burner; First valve provided in the first gas supply path, opened by ignition operation, and kept open by a normal combustion signal from the flame detection elements provided in both WI gas pilot burners
An electromagnetic valve is provided in the second gas supply passage, is opened by an ignition operation, and is kept open by a normal combustion signal from the flame detection element provided in the low WI gas pilot burner. A second solenoid valve, a first temporary closing valve provided downstream of the first solenoid valve in the first gas supply passage and closed only during ignition operation, and a second solenoid valve in the second gas supply passage Second valve that is installed further downstream and closes only during ignition operation
The gist is that it is equipped with a temporary closing valve.
【０００７】また、本発明の請求項４記載のガス燃焼器
具は、上記請求項２記載のガス燃焼器具において、上記
メインバーナへの燃料ガス供給路として設けられる第１
ガス供給路及び第２ガス供給路と、上記第１ガス供給路
中に設けられ、点火操作により開弁されると共に、上記
高ＷＩガス用パイロットバーナに備えられた上記炎検知
素子からの正常燃焼信号で開弁保持される第１電磁弁
と、上記第２ガス供給路中に設けられ、点火操作により
開弁されると共に、上記低ＷＩガス用パイロットバーナ
に備えられた上記炎検知素子からの正常燃焼信号で開弁
保持される第２電磁弁と、上記第１ガス供給路中で第１
電磁弁より下流に設けられ、点火操作時のみ閉弁する第
１一時閉鎖弁と、上記第２ガス供給路中で第２電磁弁よ
り下流に設けられ、点火操作時のみ閉弁する第２一時閉
鎖弁とを備えたことを要旨とする。Further, a gas burning appliance according to a fourth aspect of the present invention is the gas burning appliance according to the second aspect, which is provided as a fuel gas supply passage to the main burner.
Normal combustion from the flame detection element provided in the gas supply passage and the second gas supply passage and the first gas supply passage, opened by ignition operation, and provided in the high WI gas pilot burner A first electromagnetic valve that is held open by a signal and a valve provided in the second gas supply path that is opened by an ignition operation and that is provided from the flame detection element provided in the low WI gas pilot burner. A second solenoid valve that is kept open by a normal combustion signal and a first solenoid valve in the first gas supply path.
A first temporary shutoff valve provided downstream of the solenoid valve and closed only during ignition operation, and a second temporary shutoff valve provided downstream of the second solenoid valve in the second gas supply passage and closed only during ignition operation. The gist is that it has a closing valve.
【０００８】また、本発明の請求項５記載のガス燃焼器
具は、上記請求項３または４記載のガス燃焼器具におい
て、上記高または両ＷＩガス用パイロットバーナへのガ
ス供給管を、上記第１電磁弁と上記第１一時閉鎖弁との
間のガス流路に設け、上記低ＷＩガス用パイロットバー
ナへのガス供給管を、上記第２電磁弁と上記第２一時閉
鎖弁との間のガス流路に設けたことを要旨とする。A gas combustion instrument according to claim 5 of the present invention is the gas combustion instrument according to claim 3 or 4, wherein the gas supply pipe to the pilot burner for high or both WI gases is A gas supply pipe for the low WI gas pilot burner is provided in a gas flow path between the electromagnetic valve and the first temporary closing valve, and a gas between the second electromagnetic valve and the second temporary closing valve is provided. The point is that it is provided in the flow path.
【０００９】また、本発明の請求項６記載のガス燃焼器
具は、上記請求項５記載のガス燃焼器具において、上記
炎検知素子に熱電対を用いて、該熱電対から発生する起
電力で上記電磁弁を開弁保持することを要旨とする。Further, the gas burning instrument according to claim 6 of the present invention is the gas burning instrument according to claim 5, wherein a thermocouple is used for the flame detecting element, and the electromotive force generated from the thermocouple is used. The gist is to hold the solenoid valve open.
【００１０】また、本発明の請求項７記載のガス燃焼器
具は、上記請求項６記載のガス燃焼器具において、上記
２つの炎検知素子と上記第１，第２電磁弁とで上記メイ
ンバーナの立ち消え安全装置を構成したことを要旨とす
る。A gas combustion instrument according to a seventh aspect of the present invention is the gas combustion instrument according to the sixth aspect, wherein the two flame detection elements and the first and second solenoid valves are provided for the main burner. The main point is that an erasure safety device is configured.
【００１１】また、本発明の請求項８記載のガス燃焼器
具は、上記請求項１〜７の何れかに記載のガス燃焼器具
において、上記低ＷＩガスはジメチルエーテル、上記高
ＷＩガスはＬＰガスであることを要旨とする。A gas combustion instrument according to claim 8 of the present invention is the gas combustion instrument according to any one of claims 1 to 7, wherein the low WI gas is dimethyl ether and the high WI gas is LP gas. The point is that there is.
【００１２】上記構成を有する本発明の請求項１記載の
ガス燃焼器具は、メインバーナを燃焼させる前に２つの
パイロットバーナに点火し、このパイロットバーナの燃
焼状態を２つの炎検知素子でそれぞれ検知してガス種を
判別する。例えば、片ＷＩガス用パイロットバーナを、
低ＷＩガスでは正常燃焼し高ＷＩガスでは異常燃焼する
ように構成した場合においては、低ＷＩガスが供給され
る場合では、片ＷＩガス用パイロットバーナと両ＷＩガ
ス用パイロットバーナの両方とも正常燃焼し、一方、高
ＷＩガスが供給される場合では、片ＷＩガス用パイロッ
トバーナが異常燃焼すると共に、両ＷＩガス用パイロッ
トバーナが正常燃焼する。逆に、片ＷＩガス用パイロッ
トバーナを、高ＷＩガスでは正常燃焼し低ＷＩガスでは
異常燃焼するように構成した場合においては、高ＷＩガ
スが供給される場合では、片ＷＩガス用パイロットバー
ナと両ＷＩガス用パイロットバーナの両方とも正常燃焼
し、一方、低ＷＩガスが供給される場合では、片ＷＩガ
ス用パイロットバーナが異常燃焼すると共に、両ＷＩガ
ス用パイロットバーナが正常燃焼する。従って、２つの
パイロットバーナの燃焼状態を検知することで供給され
た燃料ガスの種類が判別される。流量切替手段は、この
ガス種判別に応じてメインバーナへのガス供給流量を切
り替える。この結果、燃料ガスのＷＩの大きさに関係な
く同一能力（インプット）でメインバーナを燃焼させる
ことができる。In the gas combustion instrument according to claim 1 of the present invention having the above structure, the two pilot burners are ignited before the main burner is burned, and the combustion states of the pilot burners are detected by the two flame detection elements, respectively. Then, the gas type is determined. For example, a pilot burner for single WI gas,
When the low WI gas is normally burned and the high WI gas is abnormally burned, when the low WI gas is supplied, both the single WI gas pilot burner and the both WI gas pilot burners are normally burned. On the other hand, when high WI gas is supplied, the pilot burner for one WI gas abnormally burns, and the pilot burners for both WI gases burn normally. Conversely, in the case where the single WI gas pilot burner is configured to normally burn in high WI gas and abnormally burn in low WI gas, when the high WI gas is supplied, the single WI gas pilot burner Both of the WI gas pilot burners burn normally, while when low WI gas is supplied, the one WI gas pilot burner abnormally burns and both WI gas pilot burners burn normally. Therefore, the type of the fuel gas supplied is determined by detecting the combustion states of the two pilot burners. The flow rate switching means switches the gas supply flow rate to the main burner according to the gas type discrimination. As a result, the main burner can be burned with the same capacity (input) regardless of the WI of the fuel gas.
【００１３】また、本発明の請求項２記載のガス燃焼器
具は、メインバーナを燃焼させる前に２つのパイロット
バーナに点火し、このパイロットバーナの燃焼状態を２
つの炎検知素子でそれぞれ検知してガス種を判別する。
低ＷＩガスが供給される場合には、高ＷＩガス用パイロ
ットバーナが異常燃焼し、低ＷＩガス用パイロットバー
ナが正常燃焼し、一方、高ＷＩガスが供給される場合に
は、低ＷＩガス用パイロットバーナが異常燃焼し、高Ｗ
Ｉガス用パイロットバーナが正常燃焼する。従って、２
つのパイロットバーナの燃焼状態を検知することで供給
された燃料ガスの種類が判別される。流量切替手段は、
このガス種判別に応じてメインバーナへのガス供給流量
を切り替える。この結果、燃料ガスのＷＩの大きさに関
係なく同一能力（インプット）でメインバーナを燃焼さ
せることができる。Further, according to the second aspect of the present invention, there is provided a gas combustion apparatus, wherein two pilot burners are ignited before the main burner is burned, and the combustion state of the pilot burners is set to 2
The two flame detection elements detect each to determine the gas type.
When low WI gas is supplied, the pilot burner for high WI gas abnormally burns, and the pilot burner for low WI gas burns normally, while when high WI gas is supplied, it is for low WI gas Pilot burner burns abnormally, high W
The pilot burner for I gas burns normally. Therefore, 2
The type of fuel gas supplied is determined by detecting the combustion state of the two pilot burners. The flow rate switching means is
The gas supply flow rate to the main burner is switched according to the gas type discrimination. As a result, the main burner can be burned with the same capacity (input) regardless of the WI of the fuel gas.
【００１４】また、本発明の請求項３記載のガス燃焼器
具は、点火操作により第１電磁弁と第２電磁弁とを開弁
すると共に、これらの下流に設けられた第１一時閉鎖弁
と第２一時閉鎖弁とを閉弁する。従って、点火操作中に
はメインバーナへ燃料ガスが供給されない。この燃料ガ
スが低ＷＩガスである場合には、低ＷＩガス用パイロッ
トバーナと両ＷＩガス用パイロットバーナの両方とも正
常燃焼し、それらに備えられた各炎検知素子が両方とも
正常燃焼信号を出力する。そして、点火操作後、第１電
磁弁と第２電磁弁の両方が開弁保持されると共に、第１
一時閉鎖弁と第２一時閉鎖弁とが開弁され、燃料ガス
は、第１ガス供給路と第２ガス供給路の両方からメイン
バーナへ噴出する。一方、この燃料ガスが高ＷＩガスで
ある場合には、両ＷＩガス用パイロットバーナのみ正常
燃焼してその炎検知素子が正常燃焼信号を出力する。そ
して、点火操作後、第１電磁弁が開弁保持され第２電磁
弁が閉弁されると共に、第１一時閉鎖弁と第２一時閉鎖
弁とが開弁され、燃料ガスは、第１ガス供給路からのみ
メインバーナへ噴出する。このように、高ＷＩガスでは
１つのガス供給路からガスを供給することに対して、低
ＷＩガスでは２つのガス供給路からガスを供給してガス
流量を自動的に増加させる。これらのガス流量をそれぞ
れのガス種に対応させることにより、燃料ガスのＷＩの
大きさに関係なく同一能力でメインバーナを燃焼させる
ことができる。Further, according to a third aspect of the present invention, there is provided a gas combustion instrument which opens the first solenoid valve and the second solenoid valve by an ignition operation, and at the same time, provides a first temporary shutoff valve provided downstream thereof. The second temporary closing valve is closed. Therefore, fuel gas is not supplied to the main burner during the ignition operation. When this fuel gas is low WI gas, both the low WI gas pilot burner and both WI gas pilot burners burn normally, and each flame detection element provided in them outputs a normal combustion signal. To do. After the ignition operation, both the first solenoid valve and the second solenoid valve are held open and the first solenoid valve is opened.
The temporary closing valve and the second temporary closing valve are opened, and the fuel gas is jetted to the main burner from both the first gas supply passage and the second gas supply passage. On the other hand, when the fuel gas is high WI gas, only the pilot burners for both WI gases are normally burned and the flame detection element outputs a normal burning signal. After the ignition operation, the first solenoid valve is held open and the second solenoid valve is closed, the first temporary shutoff valve and the second temporary shutoff valve are opened, and the fuel gas is the first gas. Ejects to the main burner only from the supply channel. As described above, in the high WI gas, the gas is supplied from one gas supply path, whereas in the low WI gas, the gas is supplied from the two gas supply paths to automatically increase the gas flow rate. By making these gas flow rates correspond to the respective gas types, it is possible to burn the main burner with the same capacity regardless of the size of the WI of the fuel gas.
【００１５】また、本発明の請求項４記載のガス燃焼器
具は、点火操作により第１電磁弁と第２電磁弁とを開弁
すると共に、これらの下流に設けられた第１一時閉鎖弁
と第２一時閉鎖弁とを閉弁する。従って、点火操作中に
はメインバーナへ燃料ガスが供給されない。この燃料ガ
スが低ＷＩガスである場合には、高ＷＩガス用パイロッ
トバーナが異常燃焼して炎検知素子が異常燃焼信号を出
力し、低ＷＩガス用パイロットバーナが正常燃焼して炎
検知素子が正常燃焼信号を出力する。そして、点火操作
後、第２電磁弁が開弁保持され第１電磁弁が閉弁される
と共に、第１一時閉鎖弁と第２一時閉鎖弁とが開弁さ
れ、燃料ガスは、第２ガス供給路からのみメインバーナ
へ噴出する。一方、この燃料ガスが高ＷＩガスである場
合には、高ＷＩガス用パイロットバーナのみ正常燃焼し
てその炎検知素子が正常燃焼信号を出力する。そして、
点火操作後、第１電磁弁が開弁保持され第２電磁弁が閉
弁されると共に、第１一時閉鎖弁と第２一時閉鎖弁とが
開弁され、燃料ガスは、第１ガス供給路からのみメイン
バーナへ噴出する。このように、高ＷＩガスでは第１ガ
ス供給路からのみガスを供給し、低ＷＩガスでは第２ガ
ス供給路からのみガスを供給する。これらのガス流量を
それぞれのガス種に対応させることにより、燃料ガスの
ＷＩの大きさに関係なく同一能力でメインバーナを燃焼
させることができる。According to a fourth aspect of the present invention, there is provided a gas combustion instrument which opens the first solenoid valve and the second solenoid valve by an ignition operation, and at the same time, provides a first temporary shutoff valve provided downstream thereof. The second temporary closing valve is closed. Therefore, fuel gas is not supplied to the main burner during the ignition operation. When the fuel gas is low WI gas, the high WI gas pilot burner abnormally burns and the flame detection element outputs an abnormal combustion signal, and the low WI gas pilot burner normally burns and the flame detection element Output a normal combustion signal. Then, after the ignition operation, the second electromagnetic valve is held open and the first electromagnetic valve is closed, the first temporary closing valve and the second temporary closing valve are opened, and the fuel gas is the second gas. Ejects to the main burner only from the supply channel. On the other hand, when the fuel gas is high WI gas, only the high WI gas pilot burner normally burns and the flame detection element outputs a normal burning signal. And
After the ignition operation, the first electromagnetic valve is held open, the second electromagnetic valve is closed, the first temporary closing valve and the second temporary closing valve are opened, and the fuel gas is supplied to the first gas supply path. Ejects into the main burner only from. Thus, the high WI gas supplies the gas only from the first gas supply passage, and the low WI gas supplies the gas only from the second gas supply passage. By making these gas flow rates correspond to the respective gas types, it is possible to burn the main burner with the same capacity regardless of the size of the WI of the fuel gas.
【００１６】また、本発明の請求項５記載のガス燃焼器
具は、パイロットバーナが異常燃焼する場合に、そのパ
イロットバーナに対応する電磁弁が閉弁し、異常燃焼し
たパイロットバーナを消火させる。このように、電磁弁
でパイロットバーナの開閉弁を兼用する。Further, in the gas combustion device according to the fifth aspect of the present invention, when the pilot burner abnormally burns, the solenoid valve corresponding to the pilot burner is closed to extinguish the abnormally burned pilot burner. Thus, the solenoid valve also serves as the opening / closing valve of the pilot burner.
【００１７】また、本発明の請求項６記載のガス燃焼器
具は、正常燃焼しているパイロットバーナでは、熱電対
から発生した所定の起電力により電磁弁が開弁保持さ
れ、一方、異常燃焼しているパイロットバーナでは、熱
電対から所定の起電力が得られないため、電磁弁が閉弁
される。このように、供給ガス種に対して適切な電磁弁
のみ、熱電対回路により機械的に開弁保持する。Further, in the gas combustion instrument according to claim 6 of the present invention, in the pilot burner which is normally burning, the electromagnetic valve is held open by a predetermined electromotive force generated from the thermocouple, while abnormal combustion is caused. In the pilot burner that is in use, the electromagnetic valve is closed because a predetermined electromotive force cannot be obtained from the thermocouple. In this way, only the solenoid valve suitable for the supplied gas type is mechanically opened and held by the thermocouple circuit.
【００１８】また、本発明の請求項７記載のガス燃焼器
具は、メインバーナとパイロットバーナの燃焼中に何ら
かの原因で立ち消えした場合に、熱電対の起電力が低下
してメインバーナとパイロットバーナへのガス供給流路
を遮断する。従って、ガス種に応じた流路切替と立ち消
え安全機能とを兼用する。Further, in the gas combustion instrument according to claim 7 of the present invention, when the main burner and the pilot burner are extinguished for some reason during the combustion, the electromotive force of the thermocouple is reduced to the main burner and the pilot burner. Shut off the gas supply flow path. Therefore, the flow path switching according to the gas type and the extinguishing safety function are combined.
【００１９】また、本発明の請求項８記載のガス燃焼器
具は、ＤＭＥとＬＰＧとを判別して供給ガス流量を調整
する。ＤＭＥは、ＬＰＧと同様にガスボンベに液化封入
して供給できるため、ＬＰＧの代替燃料として使うこと
ができる。こうしたＤＭＥとＬＰＧとを切り替えて適切
なガス量で並行使用することができる。Further, in the gas combustion instrument according to claim 8 of the present invention, the flow rate of the supply gas is adjusted by discriminating between DME and LPG. Like the LPG, the DME can be liquefied and enclosed in a gas cylinder and supplied, and thus can be used as an alternative fuel for the LPG. Such DME and LPG can be switched and used in parallel with an appropriate gas amount.
【００２０】[0020]
【発明の実施の形態】以上説明した本発明の構成・作用
を一層明らかにするために、以下本発明のガス燃焼器具
の好適な実施形態について説明する。BEST MODE FOR CARRYING OUT THE INVENTION In order to further clarify the structure and operation of the present invention described above, preferred embodiments of the gas combustion appliance of the present invention will be described below.
【００２１】《第１実施形態》本発明の第１実施形態と
してのテーブルこんろについて図１〜図４を用いて説明
する。テーブルこんろには、燃料ガスのＷＩの大きさに
関係なくＤＭＥでもＬＰＧでも燃焼するメインバーナ１
０と、メインバーナ１０の近傍に設けられ低ＷＩガス
（つまり、ＤＭＥ）のみ正常に燃焼する低ＷＩパイロッ
トバーナ２０と、メインバーナ１０の近傍に設けられ高
ＷＩガス（ＬＰＧ）でも低ＷＩガス（ＤＭＥ）でも正常
に燃焼する両ＷＩパイロットバーナ４０とが設けられ
る。尚、各パイロットバーナのこうした異なる燃焼状態
は、ガス供給流量，空気流量，炎口形状等により調整さ
れるものである。<< First Embodiment >> A table hob according to a first embodiment of the present invention will be described with reference to FIGS. Main burner 1 that burns both DME and LPG on the table, regardless of the WI size of the fuel gas.
0, the low WI pilot burner 20 provided in the vicinity of the main burner 10 and normally burning only the low WI gas (that is, DME), and the high WI gas (LPG) provided in the vicinity of the main burner 10 and the low WI gas ( Both WI pilot burners 40 that normally burn even in DME) are provided. The different combustion states of each pilot burner are adjusted by the gas supply flow rate, the air flow rate, the flame opening shape, and the like.
【００２２】メインバーナ１０へ燃料ガスを供給するガ
ス流路は、上流から順に、器具の燃料ガス入口管となる
主ガス管６１，点火操作により主ガス管６１を開くメイ
ン弁部７０，メイン弁部７０から分岐する第１ガス分岐
管６２，第２ガス分岐管６３を備える。The gas flow path for supplying the fuel gas to the main burner 10 has, in order from the upstream side, a main gas pipe 61 which serves as a fuel gas inlet pipe for the appliance, a main valve portion 70 for opening the main gas pipe 61 by an ignition operation, and a main valve. A first gas branch pipe 62 and a second gas branch pipe 63 branched from the portion 70 are provided.
【００２３】この第１ガス分岐管６２には、後述する低
ＷＩ弁部２１が接続され、低ＷＩ弁部２１から低ＷＩパ
イロットバーナ２０へのガス供給路として低ＷＩパイロ
ットガス管６４が、メインバーナ１０へのガス供給路と
して第１メインガス管６６が設けられる。この第１メイ
ンガス管６６には、メインバーナ１０へのガス流量を規
制する低ＷＩノズル２２が接続される。A low WI valve portion 21, which will be described later, is connected to the first gas branch pipe 62, and a low WI pilot gas pipe 64 serves as a gas supply path from the low WI valve portion 21 to the low WI pilot burner 20. A first main gas pipe 66 is provided as a gas supply path to the burner 10. The low WI nozzle 22 that regulates the gas flow rate to the main burner 10 is connected to the first main gas pipe 66.
【００２４】一方、第２ガス分岐管６３には、後述する
両ＷＩ弁部４１が接続され、両ＷＩ弁部４１から両ＷＩ
パイロットバーナ４０へのガス供給路として両ＷＩパイ
ロットガス管６５が、メインバーナ１０へのガス供給路
として第２メインガス管６７が設けられる。この第２メ
インガス管６７には、メインバーナ１０へのガス流量を
規制する両ＷＩノズル４２が接続される。On the other hand, both WI valve portions 41, which will be described later, are connected to the second gas branch pipe 63, and the both WI valve portions 41 are connected to both WI valve portions 41.
Both WI pilot gas pipes 65 are provided as gas supply passages to the pilot burner 40, and second main gas pipes 67 are provided as gas supply passages to the main burner 10. Both WI nozzles 42 that regulate the gas flow rate to the main burner 10 are connected to the second main gas pipe 67.
【００２５】メイン弁部７０，低ＷＩ弁部２１，両ＷＩ
弁部４１には、図示しないプッシュプッシュ型操作ボタ
ンの点火・消火操作に連動して進退する（図中、上方
向）３つに分岐した操作軸７１ａ，７１ｂ，７１ｃがそ
れぞれ挿入され、これらの操作軸７１にはメイン弁体７
１ｄ，低ＷＩ一時閉鎖弁（第２一時閉鎖弁）７１ｅ，両
ＷＩ一時閉鎖弁（第１一時閉鎖弁）７１ｆが形成され
る。Main valve 70, low WI valve 21, both WIs
Into the valve portion 41 are inserted three operating shafts 71a, 71b, 71c that move forward and backward (upward in the drawing) in conjunction with ignition / fire extinguishing operations of a push-push type operation button (not shown). The main valve body 7 is attached to the operating shaft 71.
1d, a low WI temporary closing valve (second temporary closing valve) 71e, and both WI temporary closing valves (first temporary closing valve) 71f are formed.
【００２６】メイン弁部７０は、メイン弁体７１ｄと、
メイン弁部７０に固定されメイン弁体７１ｄと接離する
メイン弁受７２と、メイン弁体７１ｄを閉弁方向（後退
方向）に付勢する戻しバネ７３とを備える。この操作ボ
タンには周知のハートカム機構が設けられ、操作ボタン
を押し切ると、操作軸７１が消火位置（図１中のａ）か
ら点火位置（図１中のｂ）へ前進するのに伴って、メイ
ン弁受７２に当接していたメイン弁体７１ｄも前進す
る。The main valve portion 70 includes a main valve body 71d and
The main valve receiving member 72 is fixed to the main valve unit 70 and comes in contact with and separates from the main valve body 71d, and a return spring 73 for urging the main valve body 71d in the valve closing direction (reverse direction). The operation button is provided with a well-known heart cam mechanism, and when the operation button is pushed down, as the operation shaft 71 advances from the fire extinguishing position (a in FIG. 1) to the ignition position (b in FIG. 1), The main valve body 71d that was in contact with the main valve support 72 also moves forward.
【００２７】そして操作ボタンから手が離されると、操
作軸７１が燃焼位置（図２中のｃ）へ若干後退し、メイ
ン弁体７１ｄも後退し開弁状態を保持する。再度、操作
ボタンを押し切ると、操作軸７１およびメイン弁体７１
ｄが再び前進し、操作ボタンから手が離されると後退し
て元の位置（図１，２中のａ）へ戻り、メイン弁体７１
ｄは、メイン弁受７２に当接して閉弁する。When the hand is released from the operation button, the operation shaft 71 is slightly retracted to the combustion position (c in FIG. 2), and the main valve body 71d is also retracted to maintain the valve open state. When the operation button is pressed down again, the operation shaft 71 and the main valve body 71
d moves forward again, and when the operation button is released, it moves backward and returns to the original position (a in FIGS. 1 and 2), and the main valve body 71
The valve d contacts the main valve support 72 and closes the valve.
【００２８】低ＷＩ弁部２１は、上流側の第１ガス分岐
管６２と下流側の第１メインガス管６６との間で低ＷＩ
弁部２１の内部空間を仕切る低ＷＩ弁受２３と、低ＷＩ
弁受２３の下流側でガス流路を開閉する低ＷＩ一時閉鎖
弁７１ｅと、低ＷＩ弁受２３の上流側でガス流路を開閉
する低ＷＩ電磁弁（第２電磁弁）２４とを備える。この
低ＷＩ弁受２３には、低ＷＩ一時閉鎖弁７１ｅと低ＷＩ
電磁弁２４との間に形成されるメイン通路２３ａと低Ｗ
Ｉパイロットガス管６４とを連通するパイロット通路２
３ｂが形成される。The low WI valve portion 21 has a low WI between the upstream first gas branch pipe 62 and the downstream first main gas pipe 66.
A low WI valve support 23 for partitioning the internal space of the valve portion 21 and a low WI
A low WI temporary closing valve 71e that opens and closes the gas flow path on the downstream side of the valve support 23 and a low WI electromagnetic valve (second electromagnetic valve) 24 that opens and closes the gas flow path on the upstream side of the low WI valve support 23 are provided. . The low WI valve support 23 includes a low WI temporary closing valve 71e and a low WI.
The main passage 23a formed between the solenoid valve 24 and the low W
I Pilot passage 2 communicating with I pilot gas pipe 64
3b is formed.
【００２９】また、低ＷＩ電磁弁２４は、操作軸７１ｂ
により押されて移動する低ＷＩ電磁弁体２５と、電磁弁
体２５を吸着する低ＷＩ電磁石２６と、低ＷＩ電磁弁体
２５を閉弁方向に付勢する戻しバネ２７とを備える。低
ＷＩ電磁石２６を巻回するコイル２６ａには、低ＷＩパ
イロットバーナ２０の火炎状態を検知する低ＷＩ熱電対
２８が接続され、低ＷＩ熱電対２８の起電力によって低
ＷＩ電磁石２６が低ＷＩ電磁弁体２５を吸着する構成と
なっている。Further, the low WI solenoid valve 24 has the operation shaft 71b.
The low WI electromagnetic valve body 25 pushed and moved by, the low WI electromagnet 26 that attracts the electromagnetic valve body 25, and the return spring 27 that biases the low WI electromagnetic valve body 25 in the valve closing direction. A low WI thermocouple 28 that detects the flame state of the low WI pilot burner 20 is connected to the coil 26a that winds the low WI electromagnet 26, and the low WI electromagnet 26 is driven by the electromotive force of the low WI thermocouple 28. It is configured to adsorb the valve body 25.
【００３０】両ＷＩ弁部４１も低ＷＩ弁部２１と同じ構
成をしており、上流側の第２ガス分岐管６３と下流側の
第２メインガス管６７との間で両ＷＩ弁部４１の内部空
間を仕切る両ＷＩ弁受４３と、両ＷＩ弁受４３の下流側
でガス流路を開閉する両ＷＩ一時閉鎖弁７１ｆと、両Ｗ
Ｉ弁受４３の上流側でガス流路を開閉する両ＷＩ電磁弁
（第１電磁弁）４４とを備える。この両ＷＩ受４３に
は、両ＷＩ一時閉鎖弁７１ｆと両ＷＩ電磁弁４４との間
に形成されるメイン通路４３ａと両ＷＩパイロットガス
管６５とを連通するパイロット通路４３ｂが形成され
る。Both WI valve portions 41 have the same structure as the low WI valve portion 21, and both WI valve portions 41 are provided between the second gas branch pipe 63 on the upstream side and the second main gas pipe 67 on the downstream side. Both WI valve supports 43 for partitioning the internal space of the WI, both WI temporary closing valves 71f for opening and closing the gas flow path on the downstream side of both WI valve supports 43, and both W
Both WI electromagnetic valves (first electromagnetic valves) 44 that open and close the gas flow path upstream of the I valve receiver 43 are provided. A pilot passage 43b, which connects the main passage 43a formed between the both WI temporary closing valves 71f and the both WI electromagnetic valves 44 and the both WI pilot gas pipes 65, is formed in the both WI receivers 43.
【００３１】また、両ＷＩ電磁弁４４は、操作軸７１ｃ
により押されて移動する両ＷＩ電磁弁体４５と、電磁弁
体４５を吸着する両ＷＩ電磁石４６と、両ＷＩ電磁弁体
４５を閉弁方向に付勢する戻しバネ４７とを備える。両
ＷＩ電磁石４６を巻回するコイル４６ａには、両ＷＩパ
イロットバーナ４０の火炎状態を検知する両ＷＩ熱電対
４８が接続され、両ＷＩ熱電対４８の起電力によって両
ＷＩ電磁石４６が両ＷＩ電磁弁体４５を吸着する構成と
なっている。Both WI solenoid valves 44 are provided with an operating shaft 71c.
Both WI electromagnetic valve bodies 45 pushed and moved by, WI electromagnets 46 attracting the electromagnetic valve bodies 45, and return springs 47 for urging both WI electromagnetic valve bodies 45 in the valve closing direction. Both WI thermocouples 48 for detecting the flame state of both WI pilot burners 40 are connected to a coil 46a around which both WI electromagnets 46 are wound, and both WI electromagnets 46 are driven by both WI electromagnets 46 by the electromotive force of both WI thermocouples 48. It is configured to adsorb the valve element 45.
【００３２】メインバーナ１０へのガス流量を規制する
低ＷＩノズル２２は、ＬＰＧが両ＷＩノズル４２から供
給される時のインプットと、ＤＭＥが両ＷＩノズル４２
と低ＷＩノズル２２とから供給される時のインプットと
が等しくなるようにノズル径が決められている。つま
り、インプットがノズル径φを２乗したものとＷＩとに
比例することから、ＬＰＧとＤＭＥとで同一インプット
にするためには次式が成り立つようにすればよい。The low WI nozzle 22 that regulates the gas flow rate to the main burner 10 is an input when LPG is supplied from both WI nozzles 42 and a DME is both WI nozzles 42.
The nozzle diameter is determined so that the input when supplied from the low WI nozzle 22 and the input when supplied from the low WI nozzle 22 are the same. That is, since the input is proportional to the square of the nozzle diameter φ and WI, the following equation may be established to make the LPG and DME have the same input.
【００３３】
φ42 2ＷＩLPG＝（φ42 2＋φ22 2）ＷＩDME …式（１）
尚、φ42：両ＷＩノズル４２のノズル径、φ22：低ＷＩ
ノズル２２のノズル径、ＷＩLPG：ＬＰＧ（ここでは純
プロパン）のＷＩで１９，０００ｋｃａｌ／Ｎｍ3、Ｗ
ＩDME：ＤＭＥのＷＩで１２，４２０ｋｃａｌ／Ｎｍ3。
式（１）を変形して、
φ22／φ42＝｛（ＷＩLPG／ＷＩDME）−１｝1/2 …式（２）Φ 42 2 WI LPG = (φ 42 2 + φ 22 2 ) WI DME (1) where φ 42 : nozzle diameter of both WI nozzles 42, φ 22 : low WI
Nozzle diameter of nozzle 22, WI LPG : WI of LPG (here pure propane) is 19,000 kcal / Nm 3 , W
I DME : WI of DME is 12,420 kcal / Nm 3 .
By transforming the equation (1), φ 22 / φ 42 = {(WI LPG / WI DME ) −1} 1/2 ... Equation (2)
【００３４】式（２）に数値を代入してφ22／φ42＝
０．７３となることから、低ＷＩノズル２２のノズル径
φ22を両ＷＩノズル４２のノズル径φ42の０．７３倍の
大きさにすると、インプットを等しくすることができ
る。例えば、両ＷＩノズル４２のノズル径φ42を０．８
３ｍｍとした場合には、低ＷＩノズル２２のノズル径φ
22を０．６１ｍｍとすればよい。Substituting a numerical value into the equation (2), φ 22 / φ 42 =
Since the 0.73, when the nozzle diameter phi 22 low WI nozzle 22 to 0.73 times the size of the nozzle diameter phi 42 of both WI nozzle 42, it is possible to equalize the input. For example, the nozzle diameter φ 42 of both WI nozzles 42 is 0.8
When 3 mm, the nozzle diameter φ of the low WI nozzle 22
22 may be 0.61 mm.
【００３５】上述のように構成された点火消火機構を持
つテーブルこんろでは、操作ボタンを押すと、操作軸７
１が図１中の矢印Ｆの方向に前進し、メイン弁体７１ｄ
が戻しバネ７３の付勢力に抗しながらメイン弁受７２か
ら離れてメイン弁部７０を開弁すると共に、低，両ＷＩ
一時閉鎖弁７１ｅ，７１ｆが低，両ＷＩ弁受２３，４３
に当接して、メインバーナ１０用の第６，７ガス管６
６，６７へのガス流路を閉鎖する。In the table stove having the ignition and extinguishing mechanism configured as described above, when the operation button is pushed, the operation shaft 7
1 moves forward in the direction of arrow F in FIG.
While opening the main valve portion 70 while separating from the main valve support 72 while resisting the urging force of the return spring 73, the low and both WI
Temporary closing valve 71e, 71f is low, both WI valve receiving 23, 43
The sixth and seventh gas pipes 6 for the main burner 10
Close the gas flow path to 6,67.
【００３６】これと同時に、操作軸７１ｂ，７１ｃは、
低，両ＷＩ電磁弁体２５，４５を前進させて、低，両Ｗ
Ｉパイロットバーナ２０，４０用の第４，５ガス管６
４，６５へのガス流路を開くと共に、低，両ＷＩ電磁弁
体２５，４５を低，両ＷＩ電磁石２６，４６に当接させ
る。この点火操作により、燃料ガスは、低，両ＷＩパイ
ロットバーナ２０，４０へ流れて、図示しないイグナイ
タにより点火される。At the same time, the operating shafts 71b and 71c are
Low, both WI solenoid valve bodies 25, 45 are advanced to lower, both W
4th and 5th gas pipes 6 for I pilot burner 20, 40
The low and both WI electromagnetic valve bodies 25 and 45 are brought into contact with the low and both WI electromagnets 26 and 46, while opening the gas flow paths to 4, and 65. By this ignition operation, the fuel gas flows to the low and both WI pilot burners 20, 40 and is ignited by an igniter (not shown).
【００３７】燃料ガスがＬＰＧ（高ＷＩガス）の場合で
は、両ＷＩパイロットバーナ４０が正常に燃焼し、両Ｗ
Ｉ熱電対４８が所定レベル以上の起電力を発生して、両
ＷＩ電磁石４６が両ＷＩ電磁弁体４５を吸着して両ＷＩ
電磁弁４４を開弁保持する。これに対して、低ＷＩパイ
ロットバーナ２０では、火炎がリフトし、低ＷＩ熱電対
２８が発生する起電力が所定レベル未満となるため、低
ＷＩ電磁石２６が低ＷＩ電磁弁体２５を吸着することが
できない。When the fuel gas is LPG (high WI gas), both WI pilot burners 40 normally burn and both W
The I thermocouple 48 generates an electromotive force of a predetermined level or higher, and the WI electromagnets 46 attract the WI electromagnetic valve bodies 45 to attract the WIs.
The solenoid valve 44 is held open. On the other hand, in the low WI pilot burner 20, the flame lifts and the electromotive force generated by the low WI thermocouple 28 becomes less than a predetermined level, so the low WI electromagnet 26 adsorbs the low WI electromagnetic valve body 25. I can't.
【００３８】従って、点火操作後、操作ボタンから手が
離されると、図２に示されるように、メイン弁部７０の
開弁状態を維持したまま操作軸７１は所定位置まで後退
すると共に、低，両ＷＩ一時閉鎖弁７１ｅ，７１ｆが
低，両ＷＩ弁受２３，４３から離れるように後退して、
メインバーナ１０用の第６，７ガス管６６，６７へのガ
ス流路を開く。Therefore, when the hand is released from the operation button after the ignition operation, as shown in FIG. 2, the operation shaft 71 is retracted to a predetermined position while maintaining the valve open state of the main valve portion 70, and is lowered. , Both WI temporary closing valves 71e, 71f are low, retracted away from both WI valve bearings 23, 43,
Open the gas flow paths to the sixth and seventh gas pipes 66, 67 for the main burner 10.
【００３９】これと同時に、操作軸７１ｂ，７１ｃは、
低，両ＷＩ電磁弁体２５，４５への付勢を解除して離れ
る。従って、低ＷＩ電磁石２６に吸着されていない低Ｗ
Ｉ電磁弁体２５は、戻しバネ２７により後退して低ＷＩ
弁受２３に当接し、低ＷＩパイロットバーナ２０へのガ
ス流路と低ＷＩノズル２２へのガス流路とを閉じる。つ
まり、低ＷＩ電磁弁２４を閉弁し、両ＷＩ電磁弁４４を
開弁保持する。At the same time, the operating shafts 71b and 71c are
Low, both WI solenoid valve bodies 25, 45 are released from the urging. Therefore, the low W that is not attracted to the low WI electromagnet 26
The I solenoid valve body 25 is retracted by the return spring 27 to reduce the WI.
It abuts the valve support 23 and closes the gas flow path to the low WI pilot burner 20 and the gas flow path to the low WI nozzle 22. That is, the low WI solenoid valve 24 is closed and both WI solenoid valves 44 are held open.
【００４０】このようにして、両ＷＩパイロットバーナ
４０は、点火操作後も燃焼を継続すると共に、メインバ
ーナ１０は、両ＷＩノズル４２からのみ燃料ガスが供給
され、両ＷＩパイロットバーナ４０から火移りして点火
され燃焼する。この時、低ＷＩパイロットバーナ２０は
消火される。In this way, both WI pilot burners 40 continue combustion even after the ignition operation, and the main burner 10 is supplied with fuel gas only from both WI nozzles 42, and the WI pilot burners 40 transfer fire. Then it is ignited and burned. At this time, the low WI pilot burner 20 is extinguished.
【００４１】一方、燃料ガスがＤＭＥ（低ＷＩガス）の
場合では、図３に示されるように、低，両ＷＩパイロッ
トバーナ２０，４０の両方が正常に燃焼し、低，両ＷＩ
電磁弁２４，４４を開弁保持する。従って、点火操作
後、操作ボタンから手が離されると、図４に示されるよ
うに、メイン弁部７０の開弁状態を維持したまま操作軸
７１が後退して、メインバーナ１０用の第６，７ガス管
６６，６７へのガス流路を開く。On the other hand, in the case where the fuel gas is DME (low WI gas), as shown in FIG. 3, both the low and both WI pilot burners 20 and 40 burn normally, and the low and both WI are burned.
The solenoid valves 24 and 44 are held open. Therefore, when the hand is released from the operation button after the ignition operation, as shown in FIG. 4, the operation shaft 71 is retracted while maintaining the opened state of the main valve portion 70, and the sixth burner for the main burner 10 is released. , 7 open the gas flow paths to the gas pipes 66, 67.
【００４２】これと同時に、低，両ＷＩ電磁弁体２５，
４５は、操作軸７１ｂ，７１ｃによる開弁方向の付勢力
が解除されるが、低，両ＷＩ電磁石２６，４６によって
どちらも吸着されるため、開弁状態が保持される。At the same time, low and both WI solenoid valve bodies 25,
45, the urging force in the valve opening direction by the operation shafts 71b and 71c is released, but both are held by the low and both WI electromagnets 26 and 46 so that the valve open state is maintained.
【００４３】つまり、低，両ＷＩパイロットバーナ２
０，４０は、点火操作後も燃焼を継続すると共に、メイ
ンバーナ１０は、低，両ＷＩノズル２２，４２の両方か
ら燃料ガスが供給され、低，両ＷＩパイロットバーナ２
０，４０から火移りして点火され燃焼する。従って、Ｄ
ＭＥが供給される場合では、ＬＰＧの場合よりもメイン
バーナ１０への供給ガス流量が増加し、ＷＩが小さくて
も同インプットで燃焼することができる。言い換えれ
ば、ＬＰＧが供給される時に供給ガス流量をＤＭＥより
も減らすため、インプット過多になることがなく安全に
使用できる。That is, low and both WI pilot burners 2
0 and 40 continue combustion even after ignition operation, and the main burner 10 is supplied with fuel gas from both the low and both WI nozzles 22 and 42, and the low and both WI pilot burners 2
The flame is transferred from 0, 40, ignited and burned. Therefore, D
When ME is supplied, the flow rate of the supply gas to the main burner 10 is larger than that in the case of LPG, and combustion can be performed with the same input even if WI is small. In other words, when the LPG is supplied, the flow rate of the supply gas is reduced as compared with the DME, so that it can be safely used without excessive input.
【００４４】そして、点火操作後、再び操作ボタンが押
し離し操作されると、操作軸７１は所定距離前進した後
にプッシュプッシュ機構のロックが解除されて後退し、
メイン弁部７０を閉弁して、各バーナ１０，２０，４０
へのガス供給を遮断して消火する。When the operation button is pushed and released again after the ignition operation, the operation shaft 71 moves forward by a predetermined distance, and then the lock of the push-push mechanism is released to move backward,
The main valve unit 70 is closed and each burner 10, 20, 40
Extinguish the fire by shutting off the gas supply to.
【００４５】バーナ１０，２０，４０が燃焼中に立ち消
えを起こすと、熱電対２８，４８の両方とも起電力が所
定レベル未満となり、電磁弁２２，４４の両方とも閉弁
して、バーナ１０，２０，４０へのガス流路が全て遮断
されるため、生ガスが漏出することを防止する。尚、点
火時に両方のパイロットバーナが着火しない場合には、
燃料ガスが適正に供給されていないとして、メインバー
ナのガス流路の開弁を禁止するため安全である。When the burners 10, 20, 40 are extinguished during combustion, the electromotive force of both thermocouples 28, 48 becomes less than a predetermined level, and both solenoid valves 22, 44 are closed to cause burner 10, Since the gas flow paths to 20 and 40 are all blocked, raw gas is prevented from leaking. If both pilot burners do not ignite during ignition,
It is safe because the valve opening of the gas passage of the main burner is prohibited if the fuel gas is not properly supplied.
【００４６】以上説明したように、本実施形態のテーブ
ルこんろでは、メインバーナ１０を燃焼させる前に、各
パイロットバーナ２０，４０の燃焼状態からガス種を判
別して、判別されたガス種に適したガス流量に自動的に
調整し、メインバーナを正常に燃焼させることができる
ため、ＬＰＧとＤＭＥとを適宜切り替えて安全に並行使
用できる。しかも、ガス種判別後は、異常燃焼したパイ
ロットバーナへのガス供給を遮断するため安全である。As described above, in the table stove of this embodiment, the gas type is determined from the combustion state of each pilot burner 20, 40 before the main burner 10 is burned, and the determined gas type is determined. Since the main gas burner can be normally burned normally by automatically adjusting to an appropriate gas flow rate, LPG and DME can be appropriately switched and safely used in parallel. Moreover, after the gas type is discriminated, the gas supply to the abnormally burned pilot burner is cut off, which is safe.
【００４７】また、ＤＭＥ，ＬＰＧともにガス流量が調
整されて、インプットが等しい状態でメインバーナ１０
を燃焼させることができ、使用者は燃料ガスを区別して
使用しなくてもよく、使い勝手がよい。また、ＬＰＧよ
り安価なＤＭＥを適宜使用すれば、ガス料金が安価とな
る。また、メインバーナ１０へのガス流量を電磁弁と熱
電対回路だけで調整することができ、複雑な制御回路が
不要で、しかも、メインバーナ１０の立ち消え安全装置
と兼用できるため安価となる。Further, the gas flow rates of both DME and LPG are adjusted so that the main burner 10 has the same input.
The fuel gas can be burned, and the user does not need to distinguish the fuel gas and use it, which is convenient. Moreover, if DME, which is cheaper than LPG, is appropriately used, the gas charge will be low. Further, the gas flow rate to the main burner 10 can be adjusted only by the solenoid valve and the thermocouple circuit, a complicated control circuit is unnecessary, and the main burner 10 can be used as a safety device for extinguishing the burner, so that the cost is low.
【００４８】《第２実施形態》次に、第２実施形態につ
いて図５，図６を用いて説明する。尚、第１実施形態と
異なる部分について説明し、重複する部分に関しては同
一符号を付してその説明を省略する。<< Second Embodiment >> Next, a second embodiment will be described with reference to FIGS. It should be noted that parts different from the first embodiment will be described, and overlapping parts will be denoted by the same reference numerals and description thereof will be omitted.
【００４９】第２実施形態では、メインバーナ１０の近
傍に設けられ低ＷＩガス（つまり、ＤＭＥ）のみ正常に
燃焼する低ＷＩパイロットバーナ２０と、メインバーナ
１０の近傍に設けられ高ＷＩガス（ＬＰＧ）のみ正常に
燃焼する高ＷＩパイロットバーナ５０とを備える。尚、
各パイロットバーナのこうした異なる燃焼状態は、ガス
供給流量，空気流量，炎口形状等により調整されるもの
である。In the second embodiment, the low WI pilot burner 20 which is provided near the main burner 10 and normally burns only the low WI gas (that is, DME), and the high WI gas (LPG) which is provided near the main burner 10. ) High WI pilot burner 50 that burns normally only. still,
These different combustion states of each pilot burner are adjusted by the gas supply flow rate, the air flow rate, the flame opening shape, and the like.
【００５０】また、第１メインガス管６６には、メイン
バーナ１０へのガス流量を規制する低ＷＩノズル３２が
設けられる。この低ＷＩノズル３２は、ＬＰＧが両ＷＩ
ノズル４２から供給される時のインプットと、ＤＭＥが
低ＷＩノズル３２から供給される時のインプットとが等
しくなるようにノズル径が決められている。つまり、第
２実施形態の低ＷＩノズル３２は、第１実施形態の低Ｗ
Ｉノズル２２よりもノズル径が大きい。Further, the first main gas pipe 66 is provided with a low WI nozzle 32 for regulating the gas flow rate to the main burner 10. This low WI nozzle 32 has both WI and LPG.
The nozzle diameter is determined so that the input when supplied from the nozzle 42 and the input when the DME is supplied from the low WI nozzle 32 are equal. That is, the low WI nozzle 32 of the second embodiment has the low W of the first embodiment.
The nozzle diameter is larger than that of the I nozzle 22.
【００５１】具体的には、
φ42 2ＷＩLPG＝φ32 2ＷＩDME …式（３）
尚、φ32：低ＷＩノズル３２のノズル径。式（１）を変
形して、
φ32／φ42＝（ＷＩLPG／ＷＩDME）1/2 …式（４）[0051] Specifically, φ 42 2 WI LPG = φ 32 2 WI DME ... Equation (3) Incidentally, phi 32: nozzle diameter low WI nozzle 32. By transforming the equation (1), φ 32 / φ 42 = (WI LPG / WI DME ) 1/2 ... Equation (4)
【００５２】式（４）に数値を代入してφ22／φ42＝
１．２４となることから、低ＷＩノズル３２のノズル径
φ32を両ＷＩノズル４２のノズル径φ42の１．２４倍の
大きさにすると、インプットを等しくすることができ
る。例えば、両ＷＩノズル４２のノズル径φ42を０．８
３ｍｍとした場合には、低ＷＩノズル３２のノズル径φ
32を１．０３ｍｍとすればよい。つまり、第２実施形態
のノズル径φ32は、第１実施形態の低ＷＩノズル２２の
ノズル径φ22（０．６１ｍｍ）の１．７倍程度となる。Substituting a numerical value into the equation (4), φ 22 / φ 42 =
Since the 1.24, when the nozzle diameter phi 32 low WI nozzle 32 to 1.24 times the size of the nozzle diameter phi 42 of both WI nozzle 42, it is possible to equalize the input. For example, the nozzle diameter φ 42 of both WI nozzles 42 is 0.8
When 3 mm, the nozzle diameter φ of the low WI nozzle 32
32 should be 1.03 mm. That is, the nozzle diameter φ 32 of the second embodiment is about 1.7 times the nozzle diameter φ 22 (0.61 mm) of the low WI nozzle 22 of the first embodiment.
【００５３】上述のように構成された点火消火機構を持
つテーブルこんろでは、操作ボタンを押すと、第１実施
形態と同様に、メインバーナ１０用の第６，７ガス管６
６，６７へのガス流路を閉鎖すると同時に、低，高ＷＩ
パイロットバーナ２０，５０用の第４，５ガス管６４，
６５へのガス流路を開くと共に、低，両ＷＩ電磁弁体２
５，４５を低，両ＷＩ電磁石２６，４６に当接させる。
この点火操作により、燃料ガスは、低，高ＷＩパイロッ
トバーナ２０，５０へ流れて、図示しないイグナイタに
より点火される。In the table stove having the ignition and extinguishing mechanism configured as described above, when the operation button is pushed, the sixth and seventh gas pipes 6 for the main burner 10 are pressed as in the first embodiment.
Low and high WI at the same time closing the gas flow path to 6,67
4th and 5th gas pipes 64 for pilot burners 20 and 50,
Open the gas flow path to 65, and low and both WI solenoid valve bodies 2
5 and 45 are brought into contact with both low and both WI electromagnets 26 and 46.
By this ignition operation, the fuel gas flows to the low and high WI pilot burners 20, 50 and is ignited by an igniter (not shown).
【００５４】燃料ガスがＬＰＧ（高ＷＩガス）の場合で
は、第１実施形態と同様に、高ＷＩパイロットバーナ５
０が正常に燃焼し、低ＷＩパイロットバーナ２０が異常
燃焼するため、点火操作後、操作ボタンから手が離され
ると、低ＷＩ電磁弁２４を閉弁し、両ＷＩ電磁弁４４を
開弁保持する。このようにして、高ＷＩパイロットバー
ナ５０は、点火操作後も燃焼を継続すると共に、メイン
バーナ１０は、両ＷＩノズル４２からのみ燃料ガスが供
給され、高ＷＩパイロットバーナ５０から火移りして点
火され燃焼する。この時、低ＷＩパイロットバーナ２０
は消火される。When the fuel gas is LPG (high WI gas), the high WI pilot burner 5 is used as in the first embodiment.
0 normally burns and the low WI pilot burner 20 abnormally burns, so when the hand is released from the operating button after ignition operation, the low WI solenoid valve 24 is closed and both WI solenoid valves 44 are held open. To do. In this way, the high WI pilot burner 50 continues combustion even after the ignition operation, and the main burner 10 is supplied with fuel gas only from the both WI nozzles 42, and the high WI pilot burner 50 transfers the fire and ignites. Is burned. At this time, the low WI pilot burner 20
Is extinguished.
【００５５】一方、燃料ガスがＤＭＥ（低ＷＩガス）の
場合では、図５に示されるように、高ＷＩパイロットバ
ーナ５０では火炎が伸びて異常燃焼し、低ＷＩパイロッ
トバーナ２０では正常に燃焼するため、点火操作後、操
作ボタンから手が離されると、低ＷＩ電磁弁２４を開弁
保持し、両ＷＩ電磁弁４４を閉弁する。このようにし
て、低ＷＩパイロットバーナ２０は、図６に示されるよ
うに、点火操作後も燃焼を継続すると共に、メインバー
ナ１０は、低ＷＩノズル３２からのみ燃料ガスが供給さ
れ、低ＷＩパイロットバーナ２０から火移りして点火さ
れ燃焼する。この時、高ＷＩパイロットバーナ５０は消
火される。従って、ＤＭＥとＬＰＧのどちらが供給され
ても、メインバーナ１０は、同インプットで燃焼するこ
とができる。On the other hand, when the fuel gas is DME (low WI gas), as shown in FIG. 5, the flame spreads abnormally in the high WI pilot burner 50 and abnormally burns, and normally burns in the low WI pilot burner 20. Therefore, when the operation button is released after the ignition operation, the low WI solenoid valve 24 is held open and both WI solenoid valves 44 are closed. In this way, the low WI pilot burner 20 continues combustion even after the ignition operation, and the main burner 10 is supplied with fuel gas only from the low WI nozzle 32 as shown in FIG. The flame is transferred from the burner 20, ignited and burned. At this time, the high WI pilot burner 50 is extinguished. Therefore, regardless of whether DME or LPG is supplied, the main burner 10 can burn with the same input.
【００５６】以上説明したように、本実施形態のテーブ
ルこんろでは、第１実施形態の効果に加えて、低ＷＩガ
ス（ここではＤＭＥ）が供給される場合では、メインバ
ーナ１０の燃焼中に燃焼するパイロットバーナは１つだ
けであるため、つまり、低ＷＩパイロットバーナ２０の
み燃焼を継続するため、高ＷＩパイロットバーナ５０
は、使用時間が短く耐久性が向上する。As described above, in addition to the effects of the first embodiment, in the table stove of the present embodiment, when low WI gas (here, DME) is supplied, during burning of the main burner 10. Since only one pilot burner burns, that is, only the low WI pilot burner 20 continues burning, the high WI pilot burner 50
Has a shorter usage time and improved durability.
【００５７】以上本発明の実施形態について説明した
が、本発明はこうした実施形態に何等限定されるもので
はなく、本発明の要旨を逸脱しない範囲において、種々
なる態様で実施し得ることは勿論である。例えば、熱電
対２８，４８に代えてフレームロッドを用い、その電流
を検知して電磁弁２４，４４の開閉制御をしてもよい。
また、熱電対の起電力で電磁弁の開弁保持をしてガス流
量を切り替えることに代えて、コントローラからガス比
例弁に制御信号を送ってガス流量制御を行ってもよい。
また、ノズルを２つ設けなくてもよい。例えば、第１メ
インガス管６６と第２メインガス管６７とを接続してそ
の下流先端にノズルを１つ設けてもよい。Although the embodiments of the present invention have been described above, the present invention is not limited to such embodiments, and it goes without saying that the present invention can be implemented in various modes without departing from the scope of the present invention. is there. For example, a frame rod may be used in place of the thermocouples 28 and 48, and the current may be detected to control the opening / closing of the solenoid valves 24 and 44.
Further, instead of keeping the solenoid valve open and switching the gas flow rate by the electromotive force of the thermocouple, a gas flow rate control may be performed by sending a control signal from the controller to the gas proportional valve.
Moreover, it is not necessary to provide two nozzles. For example, you may connect the 1st main gas pipe 66 and the 2nd main gas pipe 67, and may provide one nozzle at the downstream tip.
【００５８】[0058]
【発明の効果】以上詳述したように、本発明の請求項
１，２のガス燃焼器具によれば、メインバーナを燃焼さ
せる前に、２つのパイロットバーナの燃焼状態からガス
種を判別してそのガス種に適したガス供給流量に切り替
えるため、ガス種に関係なくメインバーナを正常に燃焼
させることができ、２種類の燃料ガスを切り替えて並行
使用できて安全である。また、燃料ガスのＷＩの大きさ
に関係なく同一能力でメインバーナを燃焼できて使い勝
手がよい。As described in detail above, according to the gas combustion apparatus of claims 1 and 2 of the present invention, the gas type is determined from the combustion states of the two pilot burners before the main burner is burned. Since the gas supply flow rate suitable for the gas type is switched, the main burner can be normally burned regardless of the gas type, and two types of fuel gas can be switched and used in parallel, which is safe. Further, the main burner can be burned with the same capacity regardless of the size of the WI of the fuel gas, which is convenient.
【００５９】更に本発明の請求項３，４のガス燃焼器具
によれば、ガス種に応じて使用するガス供給路の数を自
動的に選択するという簡単な方法でガス量を調整するた
め、確実にメインバーナを正常に燃焼させることができ
て安全である。Further, according to the gas combustion apparatus of claims 3 and 4 of the present invention, the gas amount is adjusted by a simple method of automatically selecting the number of gas supply passages to be used according to the gas species. It is safe because the main burner can be reliably burned normally.
【００６０】更に、本発明の請求項５のガス燃焼器具に
よれば、パイロットバーナへのガス供給管を電磁弁と一
時閉鎖弁との間のガス流路に設けたため、パイロットバ
ーナが正常燃焼しない場合には、メインバーナへのガス
供給路を遮断すると同時にパイロットバーナへのガス供
給路も遮断できて安全である。しかも、電磁弁でパイロ
ットバーナの開閉弁を兼用することができ、部品点数が
少なくなり、製造コストが安価となる。Further, according to the gas combustion instrument of claim 5 of the present invention, since the gas supply pipe to the pilot burner is provided in the gas flow path between the electromagnetic valve and the temporary closing valve, the pilot burner does not normally burn. In this case, it is safe to cut off the gas supply passage to the main burner and at the same time cut off the gas supply passage to the pilot burner. Moreover, the solenoid valve can also serve as the opening / closing valve of the pilot burner, the number of parts can be reduced, and the manufacturing cost can be reduced.
【００６１】更に、本発明の請求項６のガス燃焼器具に
よれば、２つのパイロットバーナと熱電対回路だけでメ
インバーナへのガス流量を調整でき、構成が簡単である
ため安価となる。Furthermore, according to the gas burning device of the sixth aspect of the present invention, the gas flow rate to the main burner can be adjusted only by the two pilot burners and the thermocouple circuit, and the structure is simple, so the cost is low.
【００６２】更に、本発明の請求項７のガス燃焼器具に
よれば、２つの炎検知素子と第１，第２電磁弁とでメイ
ンバーナの立ち消え安全装置を構成するため、ガス種に
応じた流路切替と立ち消え安全機能とを兼用できる。Further, according to the gas combustion instrument of claim 7 of the present invention, since the main burner extinguishing safety device is constituted by the two flame detecting elements and the first and second solenoid valves, it is possible to comply with the gas type. It can be used both as a flow path switching function and as a turn-off safety function.
【００６３】更に、本発明の請求項８のガス燃焼器具に
よれば、ＬＰＧと同様にガスボンベに液化封入できるＤ
ＭＥを将来ＬＰＧと並行使用する環境になっても、ガス
種を判別してそのガス種に適した仕様に切り替えること
ができるため、安全に燃焼させることができる。Further, according to the gas combustion instrument of claim 8 of the present invention, D which can be liquefied and enclosed in a gas cylinder like the LPG.
Even in the future environment where the ME is used in parallel with the LPG, the gas type can be discriminated and the specification can be switched to the one suitable for the gas type.
【図１】第１実施形態としてのガス流路部の概略構成図
である。FIG. 1 is a schematic configuration diagram of a gas flow path unit according to a first embodiment.
【図２】第１実施形態としてのガス流路部の概略構成図
である。FIG. 2 is a schematic configuration diagram of a gas flow path unit according to the first embodiment.
【図３】第１実施形態としてのガス流路部の概略構成図
である。FIG. 3 is a schematic configuration diagram of a gas flow path unit according to the first embodiment.
【図４】第１実施形態としてのガス流路部の概略構成図
である。FIG. 4 is a schematic configuration diagram of a gas flow path unit according to the first embodiment.
【図５】第２実施形態としてのガス流路部の概略構成図
である。FIG. 5 is a schematic configuration diagram of a gas flow path portion as a second embodiment.
【図６】第２実施形態としてのガス流路部の概略構成図
である。FIG. 6 is a schematic configuration diagram of a gas flow path portion as a second embodiment.
１０…メインバーナ、２０，４０，５０…低，両，高Ｗ
Ｉパイロットバーナ、２１，４１…低，両ＷＩ弁部、２
２，３２，４２…低，低，両ＷＩノズル、２３，４３…
低，両ＷＩ弁受、２３ａ，４３ａ…メイン通路、２３
ｂ，４３ｂ…パイロット通路、２４，４４…低，両ＷＩ
電磁弁、２５，４５…低，両ＷＩ電磁弁体、２６，４６
…低，両ＷＩ電磁石、２８，４８…低，両ＷＩ熱電対、
６１〜６７…ガス管、７０…メイン弁部、７１…操作
軸、７１ｅ，７１ｆ…低，両ＷＩ一時閉鎖弁。10 ... Main burner, 20, 40, 50 ... Low, both, high W
I pilot burner, 21, 41 ... Low, both WI valves, 2
2, 32, 42 ... Low, low, both WI nozzles, 23, 43 ...
Low, both WI valves, 23a, 43a ... Main passage, 23
b, 43b ... pilot passage, 24, 44 ... low, both WI
Solenoid valve, 25, 45 ... Low, both WI solenoid valve bodies, 26, 46
… Low, both WI electromagnets, 28, 48… Low, both WI thermocouples,
61-67 ... Gas pipe, 70 ... Main valve part, 71 ... Operation shaft, 71e, 71f ... Low, both WI temporary closing valves.
Claims (8)
燃料ガスを燃焼可能なメインバーナと、 高ＷＩガスが供給されても低ＷＩガスが供給されても正
常燃焼する両ＷＩガス用パイロットバーナと、 上記低ＷＩガスと上記高ＷＩガスとの何れか一方のガス
が供給される時は正常燃焼し、他方のガスが供給される
時は異常燃焼する片ＷＩガス用パイロットバーナと、 上記各パイロットバーナの燃焼状態をそれぞれ検知する
２つの炎検知素子と、 上記メインバーナへのガス流路を遮断した状態で上記各
パイロットバーナに点火し、上記２つの炎検知素子によ
り検知した信号に応じて、該メインバーナへの燃料ガス
供給流量を切り替える流量切替手段とを備えたことを特
徴とするガス燃焼器具。1. A main burner capable of burning two types of fuel gas having different Wobbe indices (WI), and a pilot burner for both WI gases that normally burns regardless of whether a high WI gas or a low WI gas is supplied. A pilot burner for one-sided WI gas, which normally burns when one of the low WI gas and the high WI gas is supplied, and abnormally burns when the other gas is supplied; Two flame detecting elements for detecting the combustion state of each pilot burner, and each pilot burner is ignited in a state in which the gas flow path to the main burner is blocked, and according to the signals detected by the two flame detecting elements. And a flow rate switching means for switching the flow rate of the fuel gas supplied to the main burner.
燃料ガスを燃焼可能なメインバーナと、 高ＷＩガスが供給される時は正常燃焼し、低ＷＩガスが
供給される時は異常燃焼する高ＷＩガス用パイロットバ
ーナと、 上記低ＷＩガスが供給される時は正常燃焼し、上記高Ｗ
Ｉガスが供給される時は異常燃焼する低ＷＩガス用パイ
ロットバーナと、 上記各パイロットバーナの燃焼状態をそれぞれ検知する
２つの炎検知素子と、 上記メインバーナへのガス流路を遮断した状態で上記各
パイロットバーナに点火し、上記２つの炎検知素子によ
り検知した信号に応じて、該メインバーナへの燃料ガス
供給流量を切り替える流量切替手段とを備えたことを特
徴とするガス燃焼器具。2. A main burner capable of burning two types of fuel gas having different Wobbe indices (WI), and normal combustion when high WI gas is supplied, and abnormal combustion when low WI gas is supplied. When the high WI gas pilot burner and the low WI gas are supplied, normal combustion is performed and the high W
A pilot burner for low WI gas that abnormally burns when I gas is supplied, two flame detection elements that detect the combustion state of each pilot burner, and a state in which the gas flow path to the main burner is blocked. A gas combustion instrument, comprising: a flow rate switching unit that ignites each of the pilot burners and switches a flow rate of a fuel gas supplied to the main burner according to a signal detected by the two flame detection elements.
上記低ＷＩガスが供給される時は正常燃焼し、上記高Ｗ
Ｉガスが供給される時は異常燃焼する低ＷＩガス用パイ
ロットバーナで構成すると共に、 上記メインバーナへの燃料ガス供給路として設けられる
第１ガス供給路及び第２ガス供給路と、 上記第１ガス供給路中に設けられ、点火操作により開弁
されると共に、上記両ＷＩガス用パイロットバーナに備
えられた上記炎検知素子からの正常燃焼信号で開弁保持
される第１電磁弁と、 上記第２ガス供給路中に設けられ、点火操作により開弁
されると共に、上記低ＷＩガス用パイロットバーナに備
えられた上記炎検知素子からの正常燃焼信号で開弁保持
される第２電磁弁と、 上記第１ガス供給路中で第１電磁弁より下流に設けら
れ、点火操作時のみ閉弁する第１一時閉鎖弁と、 上記第２ガス供給路中で第２電磁弁より下流に設けら
れ、点火操作時のみ閉弁する第２一時閉鎖弁とを備えた
ことを特徴とする請求項１記載のガス燃焼器具。3. The pilot burner for one-sided WI gas,
When the low WI gas is supplied, it normally burns, and the high W
A first gas supply path and a second gas supply path, which are configured as a low WI gas pilot burner that abnormally burns when I gas is supplied, and which are provided as fuel gas supply paths to the main burner, and the first gas supply path. A first solenoid valve which is provided in the gas supply path and is opened by an ignition operation, and which is held open by a normal combustion signal from the flame detection elements provided in both WI gas pilot burners; A second solenoid valve which is provided in the second gas supply path, is opened by an ignition operation, and is kept open by a normal combustion signal from the flame detection element provided in the low WI gas pilot burner; A first temporary shutoff valve that is provided downstream of the first solenoid valve in the first gas supply passage and that closes only during ignition operation; and a first shutoff valve that is provided downstream of the second solenoid valve in the second gas supply passage. During ignition operation Second gas combustion device according to claim 1, wherein further comprising a a temporary closure valve for closing.
して設けられる第１ガス供給路及び第２ガス供給路と、 上記第１ガス供給路中に設けられ、点火操作により開弁
されると共に、上記高ＷＩガス用パイロットバーナに備
えられた上記炎検知素子からの正常燃焼信号で開弁保持
される第１電磁弁と、 上記第２ガス供給路中に設けられ、点火操作により開弁
されると共に、上記低ＷＩガス用パイロットバーナに備
えられた上記炎検知素子からの正常燃焼信号で開弁保持
される第２電磁弁と、 上記第１ガス供給路中で第１電磁弁より下流に設けら
れ、点火操作時のみ閉弁する第１一時閉鎖弁と、 上記第２ガス供給路中で第２電磁弁より下流に設けら
れ、点火操作時のみ閉弁する第２一時閉鎖弁とを備えた
ことを特徴とする請求項２記載のガス燃焼器具。4. A first gas supply path and a second gas supply path provided as a fuel gas supply path to the main burner, and a valve provided by the ignition operation provided in the first gas supply path, A first electromagnetic valve that is opened and held by a normal combustion signal from the flame detection element provided in the high WI gas pilot burner, and is provided in the second gas supply path and is opened by an ignition operation. A second solenoid valve that is opened and held by a normal combustion signal from the flame detection element provided in the low WI gas pilot burner, and is provided downstream of the first solenoid valve in the first gas supply path. And a second temporary closing valve that is closed only during an ignition operation and a second temporary closing valve that is provided downstream of the second electromagnetic valve in the second gas supply path and that closes only during an ignition operation. Gas according to claim 2, characterized in that Baked instrument.
ーナへのガス供給管を、上記第１電磁弁と上記第１一時
閉鎖弁との間のガス流路に設け、上記低ＷＩガス用パイ
ロットバーナへのガス供給管を、上記第２電磁弁と上記
第２一時閉鎖弁との間のガス流路に設けたことを特徴と
する請求項３または４記載のガス燃焼器具。5. A gas supply pipe to the pilot burner for high or both WI gases is provided in a gas flow path between the first electromagnetic valve and the first temporary closing valve, and the pilot burner for low WI gas is provided. The gas combustion instrument according to claim 3 or 4, wherein a gas supply pipe for the gas is provided in a gas flow path between the second electromagnetic valve and the second temporary closing valve.
電対から発生する起電力で上記電磁弁を開弁保持するこ
とを特徴とする請求項５記載のガス燃焼器具。6. The gas combustion instrument according to claim 5, wherein a thermocouple is used as the flame detecting element, and the electromagnetic valve is held open by an electromotive force generated from the thermocouple.
電磁弁とで上記メインバーナの立ち消え安全装置を構成
したことを特徴とする請求項６記載のガス燃焼器具。7. The two flame detecting elements and the first and second flame detecting elements.
7. The gas combustion instrument according to claim 6, wherein a safety device for extinguishing the main burner is constituted by an electromagnetic valve.
記高ＷＩガスはＬＰガスであることを特徴とする請求項
１〜７の何れかに記載の家庭用ガス燃焼器具。8. The household gas combustion appliance according to claim 1, wherein the low WI gas is dimethyl ether and the high WI gas is LP gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001240034A JP4604269B2 (en) | 2001-08-08 | 2001-08-08 | Gas burning appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001240034A JP4604269B2 (en) | 2001-08-08 | 2001-08-08 | Gas burning appliances |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003056845A true JP2003056845A (en) | 2003-02-26 |
| JP4604269B2 JP4604269B2 (en) | 2011-01-05 |
Family
ID=19070703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001240034A Expired - Fee Related JP4604269B2 (en) | 2001-08-08 | 2001-08-08 | Gas burning appliances |
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| Country | Link |
|---|---|
| JP (1) | JP4604269B2 (en) |
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| JP3533302B2 (en) * | 1996-12-29 | 2004-05-31 | 東京瓦斯株式会社 | Combustion equipment |
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2001
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