JPH0160744B2 - - Google Patents
Info
- Publication number
- JPH0160744B2 JPH0160744B2 JP59196075A JP19607584A JPH0160744B2 JP H0160744 B2 JPH0160744 B2 JP H0160744B2 JP 59196075 A JP59196075 A JP 59196075A JP 19607584 A JP19607584 A JP 19607584A JP H0160744 B2 JPH0160744 B2 JP H0160744B2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- heater
- water supply
- burner
- hot
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 83
- 238000002485 combustion reaction Methods 0.000 claims description 21
- 238000009423 ventilation Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000008236 heating water Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000010926 purge Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000003303 reheating Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
- F23N1/085—Regulating fuel supply conjointly with another medium, e.g. boiler water using electrical or electromechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/22—Timing network
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
- F23N2225/18—Measuring temperature feedwater temperature
-
- 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
- F23N2235/14—Fuel valves electromagnetically operated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、強制通気装置を備えた密閉型燃焼室
に、ガスバーナ、及び、それによつて加熱される
水加熱用熱交換器を内装した瞬間湯沸器に関す
る。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides an instant combustion system in which a gas burner and a heat exchanger for heating water heated by the gas burner are installed in a closed combustion chamber equipped with a forced ventilation device. Regarding water heaters.
従来、上記型式の瞬間湯沸器においては、給湯
開始操作に伴ない点火イグナイターを連続スパー
クさせる等しいバーナをダイレクト着火するよう
にしていた。（文献を示すことができない。）
〔発明が解決しようとする問題点〕
しかしながら、上記従来装置にあつては、給湯
開始動作の後に、バーナ着火に先立つて強制通気
装置を始動して燃焼室内を掃気する所謂プレパー
ジを必要とするために、繰返し給湯を行なつた
際、各給湯の度に、先ず前回の給湯で配管中に残
留した設定出湯温度に近い湯が吐出された後に、
再着火に先立つて行なわれたプレパージ中に熱交
換器を通過した冷水が吐出され、その後に、再着
火されたバーナによつて加熱された設定出湯温度
の湯の吐出が開始されることとなり、そのこと
が、第４図に破線で示す如き再給湯開始時の出湯
温度の大きな変動を招くと共に、人為給湯開始操
作から実際に安定給湯が開始されるまでの大きな
時間遅れを招く問題があり、殊にそれら湯温変動
や時間遅れが再給湯操作の度に生じるために、使
用者が多大の不便さを感じるのが実情であつた。
Conventionally, in the above-mentioned type of instantaneous water heater, the ignition igniter was used to continuously spark the ignition igniter to directly ignite the same burner when the hot water supply was started. (No reference can be provided.) [Problem to be solved by the invention] However, in the conventional device described above, after the hot water supply start operation, the forced ventilation device is started before the burner ignition, and the inside of the combustion chamber is Because a so-called pre-purge process is required, when hot water is repeatedly supplied, hot water close to the set hot water temperature that remained in the piping from the previous hot water supply is first discharged, and then
The cold water that passed through the heat exchanger is discharged during the pre-purge performed prior to re-ignition, and after that, the discharge of hot water at the set hot water temperature heated by the re-ignited burner is started, This causes the problem of large fluctuations in the hot water temperature at the time of re-starting hot water supply, as shown by the broken line in Figure 4, and a large time delay from the manual hot water heating start operation to the actual start of stable hot water supply. In particular, the fact is that these hot water temperature fluctuations and time delays occur every time hot water is reheated, causing a great deal of inconvenience to users.
本発明は、バーナ着火構造に対する合理的、か
つ、簡単な改良で、再給湯操作に際しての湯温変
動や安定給湯開始の遅れを効果的に抑制する点に
ある。 The present invention is a rational and simple improvement to the burner ignition structure to effectively suppress fluctuations in hot water temperature and delays in starting stable hot water supply during reheating operations.
本発明による瞬間湯沸器の特徴構成は、バーナ
点火用の赤熱電気ヒータを密閉型燃焼室に内装
し、給湯停止状態において前記ヒータへの通電を
継続する制御手段を設けたことにあり、その作
用・効果は、次の通りである。
The instantaneous water heater according to the present invention is characterized in that a red-hot electric heater for igniting a burner is housed in a closed combustion chamber, and a control means is provided to continue energizing the heater when hot water supply is stopped. The actions and effects are as follows.
つまり、給湯停止状態において、バーナ点火用
赤熱電気ヒータに対する通電を継続して、そのヒ
ータの赤熱状態を維持することにより、給湯停止
時に未燃ガスが不測に燃焼室内に充満してしまう
といつた事態を確実に回避できるから、従前の如
きバーナ再着火に先立つてのプリパージが不要と
なつて再給湯開始操作直後のバーナ着火が可能と
なる。しかも、給湯停止状態におけるヒータの発
熱による保温作用によつて、水加熱用熱交換器内
に残留した前回給湯時の湯の冷却も防止できる。
In other words, by continuing to energize the red-hot electric heater for igniting the burner and maintaining the red-hot state of the heater when hot water supply is stopped, unburned gas may unexpectedly fill the combustion chamber when hot water supply is stopped. Since this situation can be reliably avoided, there is no longer a need for pre-purging prior to re-igniting the burner as in the past, and the burner can be ignited immediately after the re-heating operation. Furthermore, due to the heat retention effect generated by the heat generated by the heater in the hot water supply stop state, cooling of the hot water remaining in the water heating heat exchanger from the previous hot water supply can be prevented.
上述の結果、第４図に実線で示す如く、再給湯
に際しての湯温変動、及び、安定給湯開始の時間
遅れを効果的に抑制できて、使用者にとつて極め
て使い易い瞬間湯沸器にできた。
As a result of the above, as shown by the solid line in Figure 4, it is possible to effectively suppress fluctuations in hot water temperature during refilling and the time delay in starting stable hot water supply, resulting in an instantaneous water heater that is extremely easy to use for users. did it.
ちなみに、再給湯に際しての湯温変動、及び安
定給湯開始の時間遅れを抑制するために、バーナ
点火装置として、給湯停止状態において継続的に
燃焼作動するパイロツトバーナを燃焼室に内装す
ることも考えられるが、密閉型燃焼室内でのパイ
ロツトバーナの燃焼作動を継続維持するために
は、給湯停止状態においても強制通気装置を継続
作動させたり、あるいは、パイロツトバーナにブ
ラスト式等の強制給気を必要とする特殊バーナを
採用しなければならないために、電力浪費やコス
トアツプを招き、又、パイロツトバーナの装備に
は、それに対する点火プラグ等の点火装置やガス
電磁弁等の燃料制御装置が必要であるために、一
層のコストアツプや構造の複雑化を招く問題があ
る。 Incidentally, in order to suppress fluctuations in hot water temperature when reheating hot water and the time delay in starting stable hot water supply, it is also possible to install a pilot burner in the combustion chamber that continuously burns when hot water supply is stopped, as a burner ignition device. However, in order to continue the combustion operation of the pilot burner in a closed combustion chamber, it is necessary to continue operating the forced ventilation system even when hot water supply is stopped, or to provide forced air supply to the pilot burner using a blast method. This requires the use of a special burner, which leads to power consumption and increased costs.Furthermore, pilot burner equipment requires an ignition device such as a spark plug and a fuel control device such as a gas solenoid valve. However, there are problems that lead to further increases in cost and complexity of the structure.
その点、本発明によれば単なる電気ヒータであ
るから、密閉型燃焼室内でのヒータ赤熱作動を維
持することに対して何ら特殊構造、特別手段を必
要とすることが無く、又、点火プラグや電磁弁等
の付帯装置も省略できて、全体構造を極めて簡略
なものにできると共に、コスト面においても安価
なものにできる。 In this respect, according to the present invention, since it is a simple electric heater, there is no need for any special structure or special means to maintain the heater's red-hot operation in the closed combustion chamber, and there is no need for a spark plug or other special means. Ancillary devices such as electromagnetic valves can also be omitted, making the overall structure extremely simple and inexpensive.
次に実施例を図面に基づいて説明する。 Next, embodiments will be described based on the drawings.
第１図は瞬間湯沸器の概略全体構造を示し、上
部排気口Ａを形成したケーシング１によつて密閉
型燃焼室Ｂを形成し、その燃焼室Ｂに対して、ガ
スバーナ２と、給湯管路３に接続したフインチユ
ーブ型の水加熱用交換器４とを内装すると共に、
バーナ２の燃焼作動を維持するための強制通気フ
アン５の吐出風路を連通接続してある。 Figure 1 shows the overall structure of an instantaneous water heater, in which a closed combustion chamber B is formed by a casing 1 with an upper exhaust port A formed therein, and a gas burner 2 and a hot water supply pipe are connected to the combustion chamber B. In addition to installing a Finch-Uve type water heating exchanger 4 connected to the passage 3,
A discharge air passage of a forced ventilation fan 5 for maintaining the combustion operation of the burner 2 is connected to the exhaust air passage.
そして、バーナ２に対するガス燃料供給路６
に、電磁ガス弁７、及び、加熱能力調節用の比例
制御弁８を、かつ、給湯管路３に湯温センサー９
を、更に、熱交換器４に対する給水管路１０に、
定流量弁１１、及び、水流スイツチ１２を夫々介
装すると共に、フアン５の吐出風路に対して燃焼
室Ｂに対する吹き込み風圧が設定値以上の時に
ON状態となる風圧スイツチ１３を設け、更に、
バーナ点火用の赤熱電気ヒータ１４、及び、バー
ナ燃焼確認用のフレームロツド１５を燃焼室Ｂに
内装すると共に、上記各センサー及びスイツチか
らの情報に基づいて給湯作動を自動制御する装置
１６、及び、その制御装置１６に対して人為操作
指令を与えるリモートコントローラ１７を設けて
ある。 A gas fuel supply path 6 for the burner 2
In addition, an electromagnetic gas valve 7 and a proportional control valve 8 for adjusting heating capacity are installed, and a hot water temperature sensor 9 is installed in the hot water supply pipe 3.
Further, to the water supply pipe 10 for the heat exchanger 4,
A constant flow valve 11 and a water flow switch 12 are respectively installed, and when the blowing air pressure to the combustion chamber B is higher than the set value with respect to the discharge air path of the fan 5.
A wind pressure switch 13 that is turned on is provided, and further,
A red-hot electric heater 14 for igniting the burner and a flame rod 15 for confirming burner combustion are installed in the combustion chamber B, and a device 16 for automatically controlling the hot water supply operation based on information from the above-mentioned sensors and switches; A remote controller 17 is provided for giving manual operation commands to the control device 16.
前記制御装置１６の給湯制御フローは下記(イ)〜
(ハ)の如く構成されている。（第２図参照）
(イ) リモートコントローラ１７に備えた運転スイ
ツチ１８がON操作された後、１回目の給湯栓
３Ａの開き操作（給湯開始操作）に伴なう水流
スイツチ１２のON作動に基づいてフアン５を
始動操作し、その後、風圧スイツチ１３のON
作動時から設定プレパージ時間taを経過した後
にヒータ１４に対する通電を開始すると共に、
ヒータ１４への通電開始時点から設定予熱時間
tbを経過した後に電磁ガス弁７を開くようにタ
イマー制御を行なつてバーナ２の燃焼作動を開
始する。 The hot water supply control flow of the control device 16 is as follows (a) to
It is structured as shown in (c). (See Figure 2) (a) After the operation switch 18 provided in the remote controller 17 is turned on, the water flow switch 12 is turned on in conjunction with the first opening operation of the hot water tap 3A (hot water supply start operation). Based on this, start the fan 5, and then turn on the wind pressure switch 13.
After the set pre-purge time ta has elapsed from the time of activation, energization to the heater 14 is started, and
Set preheating time from the start of energization to the heater 14
After tb has elapsed, timer control is performed to open the electromagnetic gas valve 7, and the combustion operation of the burner 2 is started.
尚、フレームロツド１５によるバーナ着火確
認後、ヒータ１４に対する通電を停止する。 Incidentally, after the burner ignition is confirmed by the flame rod 15, the power supply to the heater 14 is stopped.
(ロ) 給湯栓３Ａの閉じ操作（給湯停止操作）に伴
なう水流スイツチ１２のOFF作動に基づいて、
フアン５を停止すると共に電磁ガス弁７を閉じ
操作してバーナ２の燃焼作動を停止し、更に、
その時点において運転スイツチ１８がON状態
のままであればヒータ１４に対する通電を再開
すると共に、給湯停止状態においてタイマー制
御によりヒータ１４への通電を設定時間tcだけ
継続維持する。(b) Based on the OFF operation of the water flow switch 12 in conjunction with the closing operation of the hot water tap 3A (hot water supply stop operation),
The fan 5 is stopped and the electromagnetic gas valve 7 is closed to stop the combustion operation of the burner 2, and further,
If the operation switch 18 remains in the ON state at that point, the power supply to the heater 14 is restarted, and the power supply to the heater 14 is maintained continuously for a set time tc by timer control in the hot water supply stop state.
(ハ) そして、その設定時間tc内において給湯栓３
Ａが再び開き操作（再給湯開始操作）された場
合、それに伴なう水流スイツチ１２のON作動
に基づいてフアン５を始動操作すると共に、そ
の後の風圧スイツチ１３のON作動に基づい
て、そのON作動時点で電磁ガス弁７を開き操
作してバーナ２の燃焼作動を再開する。(c) Then, within the set time tc, the hot water tap 3
When A is operated to open again (operation to start hot water supply again), the fan 5 is started based on the accompanying ON operation of the water flow switch 12, and is also turned ON based on the subsequent ON operation of the wind pressure switch 13. At the time of activation, the electromagnetic gas valve 7 is opened and operated to restart the combustion operation of the burner 2.
尚、ヒータ１４への通電を維持する前記設定時
間tc内に再給湯操作が悪かつた場合、次の給湯開
始操作に対して前述(イ)の制御を実行する。 Incidentally, if the re-heating operation is unsuccessful within the set time tc during which the heater 14 is maintained energized, the control described in (a) above is executed for the next hot-water supply start operation.
又、再給湯における給湯停止操作に対する制御
は前述(ロ)と同様であり、以後の再給湯開始操作が
前記設定時間tc内で行なわれる限り、(ハ)、(ロ)の制
御が繰り返される。 Further, the control for the hot water supply stop operation in reheating hot water is the same as that described in (b) above, and as long as the subsequent hot water reheating start operation is performed within the set time tc, the controls in (c) and (b) are repeated.
つまり、上述給湯制御において、１回目の給湯
の後、給湯停止状態において赤熱電気ヒータ１４
への通電を維持することにより、次回の給湯開始
に際してプリパージを不要すると共に、熱交換器
４中の湯の保温を図り、それによつて、第４図に
実線で示す如く従来の出湯状態（第４図中破線に
示す）に比して再給湯に際しての湯温変動、及
び、安定出湯開始の時間遅れを効果的に抑制する
ようにしてある。 That is, in the hot water supply control described above, after the first hot water supply, the incandescent electric heater 14
By maintaining the power supply to the hot water supply, pre-purging is not required when starting the next hot water supply, and the hot water in the heat exchanger 4 is kept warm. (shown by the broken line in Fig. 4), this effectively suppresses fluctuations in hot water temperature upon re-supplying hot water and the time delay in starting stable hot water supply.
一方、制御装置１６による給湯温度制御として
は、湯温センサー９からのフイードバツク情報に
基づいて、その検出湯温を湯温設定スイツチ１９
により人為設定された温度に維持するように、前
記比例制御弁８を開度制御する。 On the other hand, the hot water supply temperature control by the control device 16 is based on feedback information from the hot water temperature sensor 9, and the detected hot water temperature is controlled by the hot water temperature setting switch 19.
The opening of the proportional control valve 8 is controlled so as to maintain the temperature at the artificially set temperature.
前記赤熱電気ヒータ１４は、第３図に示す如
く、コイル状のセラミツクSiC製電熱発生体１４
Ａをブロツク状の絶縁保持具１４Ｂに支持して構
成してあり、セラミツク製電熱発生体１４Ａを採
用することにより、一般の金属発熱体に比して、
ヒータ１４の耐久性向上を図ると共に、汎用
100Vの直接使用を可能にしてヒータ用変圧トラ
ンスを不要し、さらには、保温作用のための大き
な発熱量を小型なヒータで確保できるようにして
ある。 As shown in FIG. 3, the red-hot electric heater 14 is a coil-shaped electric heat generating body 14 made of ceramic SiC.
A is supported by a block-shaped insulating holder 14B, and by adopting the ceramic electric heat generating body 14A, compared to a general metal heat generating body,
In addition to improving the durability of the heater 14,
It enables direct use of 100V, eliminating the need for a transformer for the heater, and also allows a small heater to generate a large amount of heat for heat retention.
前述制御装置１６の給湯制御フローを構成する
に、第５図に示すように、運転スイツチ１８の
ON操作時点からフアン５を継続駆動させること
により、運転スイツチ１８のON操作時点でプレ
パージを行ない、そのプレパージ終了後、初回の
給湯の前の給湯停止状態においてもヒータ１４に
対して通電するようにしても良く、そのフローを
採用することによつて初回給湯の際の出湯温度の
立ち上がりが第６図の実線で示される状態とな
り、従来のダイレクト着火方式（第６図の破線）
に比して大巾に立ち上り性能が向上される。
To configure the hot water supply control flow of the control device 16, as shown in FIG.
By continuously driving the fan 5 from the ON operation, a pre-purge is performed when the operation switch 18 is ON, and after the pre-purge is completed, the heater 14 is energized even when the hot water supply is stopped before the first hot water supply. By adopting this flow, the rising temperature of the hot water during the first hot water supply becomes the state shown by the solid line in Figure 6, which is different from the conventional direct ignition method (the broken line in Figure 6).
The start-up performance is greatly improved compared to the previous model.
又、第５図の制御フローを採用するにあたつて
は、ヒータ１４の熱交換器４に対する予熱保温作
用を効果的なものとするために、給湯停止状態に
おけるフアン５の送風量を給湯状態よりも低減さ
せるようにしても良い。 In addition, when adopting the control flow shown in FIG. 5, in order to make the preheating and heat retention effect of the heater 14 on the heat exchanger 4 effective, the air flow rate of the fan 5 when the hot water supply is stopped is changed to the hot water supply state. It may also be made to be lower than that.
赤熱電気ヒータ１４の具体構成は種々の改良が
可能であり、又、その電熱発生体１４Ａとして
SiC以外のセラミツク材や各種の金属材を適用で
きる。 The specific structure of the red-hot electric heater 14 can be improved in various ways, and its electric heat generating body 14A can be modified in various ways.
Ceramic materials other than SiC and various metal materials can be applied.
第１図ないし第４図は本発明の実施例を示し、
第１図は概略全体構造図、第２図は制御タイムチ
ヤート図、第３図はヒータの拡大斜視図、第４図
は出湯温度状態を示すグラフである。第５図及び
第６図は本発明の別実施例を示し、第５図は制御
タイムチヤート図、第６図は初回給湯の際の出湯
温度の立ち上り状態を示すグラフである。
２……ガスバーナ、４……熱交換器、５……強
制通気装置、１４……赤熱電気ヒータ、１４Ａ…
…電熱発生体、１６……制御手段、Ｂ……燃焼
室。
1 to 4 show embodiments of the present invention,
FIG. 1 is a schematic overall structural diagram, FIG. 2 is a control time chart, FIG. 3 is an enlarged perspective view of the heater, and FIG. 4 is a graph showing the temperature state of the hot water. 5 and 6 show another embodiment of the present invention, FIG. 5 is a control time chart, and FIG. 6 is a graph showing the rising state of the outlet temperature at the time of initial hot water supply. 2...Gas burner, 4...Heat exchanger, 5...Forced ventilation device, 14...Red-hot electric heater, 14A...
...Electric heat generator, 16... Control means, B... Combustion chamber.
Claims (1)
ガスバーナ２、及び、それによつて加熱される水
加熱用熱交換器４を内装した瞬間湯沸器であつ
て、バーナ点火用の赤熱電気ヒータ１４を前記燃
焼室Ｂに内装し、給湯停止状態において前記ヒー
タ１４への通電を継続する制御手段１６を設けた
瞬間湯沸器。 ２ 前記ヒータ１４の電熱発生体１４Ａがセラミ
ツク製である特許請求の範囲第１項に記載の瞬間
湯沸器。[Claims] 1. A closed combustion chamber B equipped with a forced ventilation device 5,
This instant water heater is equipped with a gas burner 2 and a heat exchanger 4 for heating water heated by the gas burner, and a red-hot electric heater 14 for igniting the burner is installed in the combustion chamber B, and when hot water supply is stopped. An instantaneous water heater provided with a control means 16 for continuously supplying electricity to the heater 14. 2. The instantaneous water heater according to claim 1, wherein the electric heat generating body 14A of the heater 14 is made of ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59196075A JPS6176842A (en) | 1984-09-19 | 1984-09-19 | Tap-controlled water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59196075A JPS6176842A (en) | 1984-09-19 | 1984-09-19 | Tap-controlled water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6176842A JPS6176842A (en) | 1986-04-19 |
| JPH0160744B2 true JPH0160744B2 (en) | 1989-12-25 |
Family
ID=16351781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59196075A Granted JPS6176842A (en) | 1984-09-19 | 1984-09-19 | Tap-controlled water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6176842A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114234453B (en) * | 2021-09-26 | 2023-03-07 | 华帝股份有限公司 | Fluctuating temperature control method of gas water heater and gas water heater |
-
1984
- 1984-09-19 JP JP59196075A patent/JPS6176842A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6176842A (en) | 1986-04-19 |
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