JPH041263B2 - - Google Patents
Info
- Publication number
- JPH041263B2 JPH041263B2 JP1131789A JP13178989A JPH041263B2 JP H041263 B2 JPH041263 B2 JP H041263B2 JP 1131789 A JP1131789 A JP 1131789A JP 13178989 A JP13178989 A JP 13178989A JP H041263 B2 JPH041263 B2 JP H041263B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- gas sensor
- carbon monoxide
- heat exchangers
- communication path
- 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
Links
- 238000002485 combustion reaction Methods 0.000 claims description 21
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 14
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 9
- 239000007789 gas Substances 0.000 description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 23
- 239000002737 fuel gas Substances 0.000 description 12
- 238000003303 reheating Methods 0.000 description 9
- 230000002159 abnormal effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Regulation And Control Of Combustion (AREA)
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は瞬間湯沸器付風呂釜や、追焚機能付給
湯器等のように複数の熱交換器を有する熱交換器
の安全機構に関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a safety mechanism for a heat exchanger having a plurality of heat exchangers, such as a bathtub with an instantaneous water heater or a water heater with a reheating function. It is something.
(従来の技術)
風呂釜や給湯器等の燃焼機器に於ける安全機構
としては、パイロツト炎に対応する熱電対によ
る、いわゆるパイロツト安全機構の他、熱交換器
の内胴内に一酸化炭素を被検ガスとするガスセン
サを設置し、不完全燃焼による一酸化炭素の発生
をガスセンサで検知して燃料ガス供給用の電磁弁
を閉とする安全機構がある。(Prior art) Safety mechanisms in combustion equipment such as bathtubs and water heaters include so-called pilot safety mechanisms using thermocouples that respond to pilot flames, as well as safety mechanisms that prevent carbon monoxide from entering the inner shell of heat exchangers. There is a safety mechanism in which a gas sensor is installed to detect the gas to be detected, and when the gas sensor detects the generation of carbon monoxide due to incomplete combustion, a solenoid valve for supplying fuel gas is closed.
(発明が解決しようとする課題)
以上の安全機構を瞬間湯沸器付風呂釜や、追焚
機能付給湯器等のように複数の熱交換器を有する
燃焼機器に適用する場合、従来はガスセンサを熱
交換器毎に設けなければならないので、所要スペ
ースが大きく、コスト高になるという課題があ
る。(Problem to be solved by the invention) When applying the above-mentioned safety mechanism to a combustion appliance having multiple heat exchangers, such as a bathtub with an instantaneous water heater or a water heater with a reheating function, conventionally, a gas sensor must be provided for each heat exchanger, which requires a large amount of space and increases costs.
本発明は、かかる課題を解決する目的とするも
のである。 The present invention aims to solve this problem.
(課題を解決するための手段)
本発明は前述した課題を解決するために、複数
の熱交換器を有する燃焼機器に於いて、隣接する
熱交換器間に、それらの内胴を連通させる連通路
を構成し、該連通路にガスセンサを設置したもの
である。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a communication system that connects adjacent heat exchangers with their inner shells in a combustion equipment having a plurality of heat exchangers. A passage is formed, and a gas sensor is installed in the communication passage.
ガスセンサは被検ガスを一酸化炭素とする他、
場合によつては可燃性ガスをも被検ガスとするも
のを用いることができる。 Gas sensors use carbon monoxide as the gas to be detected.
In some cases, combustible gas may also be used as the test gas.
(作用)
酸欠によるバーナの不完全燃焼で一酸化炭素が
発生し、内胴内に充満すると、一酸化炭素は連通
路内にも流入する。従つて、この連通路内の一酸
化炭素をガスセンサによつて検知することによ
り、バーナの不完全燃焼を検知することができ、
こうして所定濃度以上の一酸化炭素の発生時に燃
料ガス供給用の電磁弁を閉とする等の安全動作を
行うことができる。かかる際、ガスセンサは隣接
する熱交換器の夫々の内胴を連通する連通路に設
置しているので、いずれの内胴内に充満した一酸
化炭素でも検知することができ、両方の熱交換器
に対応するバーナを同時に燃焼させている場合は
勿論の事、いずれか一方側のみを燃焼させている
場合に於いても不完全燃焼の発生を検知すること
ができる。(Operation) Carbon monoxide is generated due to incomplete combustion in the burner due to lack of oxygen, and when the inner shell is filled, carbon monoxide also flows into the communication passage. Therefore, incomplete combustion in the burner can be detected by detecting carbon monoxide in this communication passage with a gas sensor,
In this way, safety operations such as closing the solenoid valve for supplying fuel gas can be performed when carbon monoxide of a predetermined concentration or higher is generated. In this case, since the gas sensor is installed in a communication path that communicates the inner shells of adjacent heat exchangers, it is possible to detect carbon monoxide filled in either inner shell, and the gas sensor It is possible to detect the occurrence of incomplete combustion not only when the burners corresponding to the burners are being burned at the same time, but also when only one side is being burned.
ガスセンサは、このように被検ガスを一酸化炭
素とする他、場合によつては可燃性ガスをも被検
ガスとするものを用いることができ、後者の場合
には、失火による生ガスの放出をも検知すること
ができる。 In addition to using carbon monoxide as the gas to be detected, gas sensors can also be used to detect flammable gases in some cases. Emissions can also be detected.
(実施例)
次に本発明を、図示の実施例ご参照して説明す
る。(Embodiments) Next, the present invention will be explained with reference to illustrated embodiments.
第1図は本発明を適用する燃焼機器の一例であ
り、この燃焼機器は、給湯用の熱交換器1aと、
追焚用の熱交換器1bを設けた追焚機能付給湯器
を表わしている。符合2a,2bは夫々の熱交換
器1a,1bの内胴で、該内胴2a,2b間に連
通路3を構成している。該連通路3は図中実線ま
たは2点鎖線で示すように、内胴2a,2bの適
所間に構成することができる。しかして、該連通
路3には、例えば金属酸化物半導体等の、一酸化
炭素を被検ガスとする素子を用いて構成したガス
センサ4を設置している。このガスセンサ4は、
可燃性ガスをも被検ガスとする素子を使用するこ
ともできる。符合5a,5bは前記熱交換器1
a,1bのフイン部で、また6a,6bは夫々給
湯経路、追焚経路の一部を構成する水管である。
符合7a,7bは夫々の熱交換器1a,1bに対
応して設けたバーナ、符合8は共通のパイロツト
バーナ、9a,9bは夫々のバーナに対応する燃
料ガス弁、10は燃料ガス元弁である。更に符合
11は、該燃料ガス元弁10を制御すする制御手
段で、この制御手段には前記ガスセンサ4の出力
と、前記パイロツトバーナ8に対応して設けた熱
電対12の出力を制御入力として、少なくとも一
方側の異常出力により前記燃料ガス元弁10を制
御する構成としている。 FIG. 1 shows an example of a combustion device to which the present invention is applied, and this combustion device includes a heat exchanger 1a for hot water supply,
This figure shows a water heater with a reheating function that is equipped with a heat exchanger 1b for reheating. Reference numerals 2a and 2b indicate inner shells of the respective heat exchangers 1a and 1b, and a communication passage 3 is formed between the inner shells 2a and 2b. The communication path 3 can be constructed between appropriate positions of the inner shells 2a and 2b, as shown by a solid line or a two-dot chain line in the figure. In the communication path 3, a gas sensor 4 is installed, which is constructed using an element such as a metal oxide semiconductor that uses carbon monoxide as a gas to be detected. This gas sensor 4 is
It is also possible to use an element that also uses flammable gas as the gas to be detected. Reference symbols 5a and 5b indicate the heat exchanger 1
In the fin portions a and 1b, 6a and 6b are water pipes constituting a part of the hot water supply route and a part of the reheating route, respectively.
7a and 7b are burners provided corresponding to the heat exchangers 1a and 1b, 8 is a common pilot burner, 9a and 9b are fuel gas valves corresponding to each burner, and 10 is a fuel gas main valve. be. Further, reference numeral 11 denotes a control means for controlling the fuel gas main valve 10, and this control means receives the output of the gas sensor 4 and the output of a thermocouple 12 provided corresponding to the pilot burner 8 as control inputs. , the fuel gas main valve 10 is controlled by an abnormal output on at least one side.
以上の構成に於いて、図中左側の給湯用熱交換
器1aに対応するバーナ7aを燃焼させることに
より、水管6aを通る上水を昇温して給湯を行う
ことができ、また図中右側の追焚用熱交換器1b
に対応するバーナ7bを燃焼させることにより、
水管6bを通る浴槽の循環水を昇温して追焚を行
うことができる。 In the above configuration, by burning the burner 7a corresponding to the hot water supply heat exchanger 1a on the left side of the figure, the temperature of the clean water passing through the water pipe 6a can be raised to perform hot water supply. Heat exchanger 1b for reheating
By burning the burner 7b corresponding to
Reheating can be performed by raising the temperature of the circulating water in the bathtub passing through the water pipe 6b.
かかる給湯または追焚のいずれかの運転時に於
いて、酸欠によりバーナ7aまたは7bが不完全
燃焼を起こし、一酸化炭素が発生して内胴2aま
たは2b内に充満すると、一酸化炭素は連通路3
内にも流入して、ガスセンサ4がこれを検知す
る。 When the burner 7a or 7b causes incomplete combustion due to lack of oxygen during such hot water supply or reheating operations, carbon monoxide is generated and fills the inner shell 2a or 2b, and the carbon monoxide is continuously released. aisle 3
The gas also flows into the interior, and the gas sensor 4 detects this.
しかして、ガスセンサの検知出力が所定値以上
の場合には制御手段11は制御出力を発生し、燃
料ガス元弁10を閉として燃料ガスの供給を遮断
することにより、不完全燃焼の進行を防ぐ。ま
た、第1図の実施例に於いては、制御手段11
は、パイロツトバーナ8が失火したり、異常燃焼
したりして熱電対12の発生熱起電力が所定以上
低下した場合にも制御出力を発生して、燃料ガス
元弁10を閉とする、いわゆるパイロツト安全動
作を行う。 When the detection output of the gas sensor is equal to or higher than a predetermined value, the control means 11 generates a control output and closes the fuel gas main valve 10 to cut off the supply of fuel gas, thereby preventing the progress of incomplete combustion. . Further, in the embodiment shown in FIG. 1, the control means 11
This is a so-called system that generates a control output and closes the fuel gas main valve 10 even when the thermoelectromotive force generated by the thermocouple 12 decreases by more than a predetermined value due to misfire or abnormal combustion of the pilot burner 8. Perform pilot safety operations.
以上の第1図の実施例に於いては、パイロツト
安全機構を併用しているが、本発明はパイロツト
バーナを有しない、いわゆる直接点火方式の燃焼
機器にも適用し得ることは勿論である。尚、第1
図の実施例に於いて、燃料ガス弁9a,9bは開
閉弁や比例制御弁等、その構成や制御動作は適宜
である。また、第1図に示す燃焼機器は、前述し
た通り、本発明を追焚機能付給湯器に適用した実
施例を表わしたものであるが、第2図に瞬間湯沸
器付風呂釜に適用した実施例を表わしたものであ
る。即ち、第2図に於いて、符合1aは瞬間湯沸
器を構成する給湯用熱交換器、1bは風呂釜を構
成する熱交換器であり、夫々の内胴2a,2b間
に連通路3を構成し、この連通路3にガスセンサ
4を設置している。また、符合6aは給湯用水
管、13,13′は風呂接続用循環接続口である。
このように、本発明は複数の熱交換器を有する適
宜の燃焼機器に適用することができるものであ
る。 In the embodiment shown in FIG. 1, a pilot safety mechanism is also used, but it goes without saying that the present invention can also be applied to so-called direct ignition type combustion equipment that does not have a pilot burner. Furthermore, the first
In the illustrated embodiment, the fuel gas valves 9a and 9b may be open/close valves, proportional control valves, or the like, and their configurations and control operations may be appropriate. Furthermore, as mentioned above, the combustion equipment shown in Fig. 1 represents an embodiment in which the present invention is applied to a water heater with a reheating function, but Fig. 2 shows an example in which the present invention is applied to a bathtub with an instantaneous water heater. This figure shows an example of the above. That is, in FIG. 2, reference numeral 1a is a hot water supply heat exchanger constituting an instantaneous water heater, 1b is a heat exchanger constituting a bath pot, and a communication passage 3 is provided between the respective inner bodies 2a and 2b. A gas sensor 4 is installed in this communication path 3. Further, reference numeral 6a is a water pipe for supplying hot water, and reference numerals 13 and 13' are circulation connection ports for connecting to a bath.
Thus, the present invention can be applied to any appropriate combustion equipment having a plurality of heat exchangers.
(発明の効果)
本発明は以上の通り、複数の熱交換器を有する
燃焼機器に於いて、隣接する熱交換器間に、それ
らの内胴を連通させる連通路を構成し、該連通路
にガスセンサを設置したので、共通の該ガスセン
サにより、いずれの内胴内に充満した一酸化炭素
等でも検知することができ、両方の熱交換器に対
応するバーナを同時に燃焼させている場合は勿論
の事、いずれか一方側のみを燃焼させている場合
に於いても不完全燃焼の発生を検知することがで
き、設置スペースが小さく燃焼機器の小型化に寄
与すると共にコストを低減し得るという効果があ
る。(Effects of the Invention) As described above, in a combustion equipment having a plurality of heat exchangers, the present invention configures a communication path between adjacent heat exchangers to communicate their inner bodies, and connects the communication path to the communication path. Since a gas sensor is installed, the common gas sensor can detect carbon monoxide, etc. that is filled in either inner cylinder. In fact, it is possible to detect the occurrence of incomplete combustion even when only one side is being combusted, and the installation space is small, contributing to the downsizing of combustion equipment and reducing costs. be.
第1図は本発明の一実施例の全体構成を表わし
た系統説明図、第2図は本発明の他実施例の要部
斜視図である。
符合1a,1b…熱交換器、2a,2b…内
胴、3…連通路、4…ガスセンサ、5a,5b…
フイン部、6a,6b…水管、7a,7b…バー
ナ、8…パイロツトバーナ、9a,9b…燃料ガ
ス弁、10…燃料ガス元弁、11…制御手段、1
2…熱電対、13,13′…循環接続口。
FIG. 1 is a system explanatory diagram showing the overall configuration of one embodiment of the present invention, and FIG. 2 is a perspective view of essential parts of another embodiment of the present invention. Symbols 1a, 1b...Heat exchanger, 2a, 2b...Inner shell, 3...Communication path, 4...Gas sensor, 5a, 5b...
Fin portion, 6a, 6b...water pipe, 7a, 7b...burner, 8...pilot burner, 9a, 9b...fuel gas valve, 10...fuel gas main valve, 11...control means, 1
2...Thermocouple, 13, 13'...Circulation connection port.
Claims (1)
隣接する熱交換器間に、それらの内胴を連通させ
る連通路を構成し、該連通路にガスセンサを設置
したことを特徴とする燃焼機器の安全機構。 2 第1項記載のガスセンサは、被検ガスを一酸
化炭素としたことを特徴とする燃焼機器の安全機
構。[Claims] 1. In a combustion equipment having a plurality of heat exchangers,
A safety mechanism for combustion equipment, characterized in that a communication path is formed between adjacent heat exchangers to communicate their inner shells, and a gas sensor is installed in the communication path. 2. The gas sensor according to item 1 is a safety mechanism for combustion equipment, characterized in that the gas to be detected is carbon monoxide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1131789A JPH02309119A (en) | 1989-05-25 | 1989-05-25 | Safety mechanism of combustion apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1131789A JPH02309119A (en) | 1989-05-25 | 1989-05-25 | Safety mechanism of combustion apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02309119A JPH02309119A (en) | 1990-12-25 |
JPH041263B2 true JPH041263B2 (en) | 1992-01-10 |
Family
ID=15066174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1131789A Granted JPH02309119A (en) | 1989-05-25 | 1989-05-25 | Safety mechanism of combustion apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02309119A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5151378B2 (en) * | 2007-10-10 | 2013-02-27 | パナソニック株式会社 | vending machine |
JP5401825B2 (en) * | 2008-04-16 | 2014-01-29 | パナソニック株式会社 | vending machine |
JP5481821B2 (en) * | 2008-10-06 | 2014-04-23 | パナソニック株式会社 | vending machine |
-
1989
- 1989-05-25 JP JP1131789A patent/JPH02309119A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH02309119A (en) | 1990-12-25 |
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