JPH03102136A - Circulation type hot water bath temperature holding device - Google Patents
Circulation type hot water bath temperature holding deviceInfo
- Publication number
- JPH03102136A JPH03102136A JP1236826A JP23682689A JPH03102136A JP H03102136 A JPH03102136 A JP H03102136A JP 1236826 A JP1236826 A JP 1236826A JP 23682689 A JP23682689 A JP 23682689A JP H03102136 A JPH03102136 A JP H03102136A
- Authority
- JP
- Japan
- Prior art keywords
- bath water
- heater
- circulation pump
- time value
- temperature detection
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 238000001514 detection method Methods 0.000 claims description 24
- 238000010792 warming Methods 0.000 claims description 19
- 238000013021 overheating Methods 0.000 abstract description 8
- 230000004044 response Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
Landscapes
- Bathtub Accessories (AREA)
- Control For Baths (AREA)
Abstract
Description
本発明は、循環式浴水保温装置の保護装置に関する。 The present invention relates to a protection device for a circulating bath water heat retention device.
【課題を解決するための手段及び発明の作用】本発明の
浴水保温装置は、第１の実施例は、浴槽内の浴水を循環
させるための循環ポンプ装置と、浴水を保温するための
ヒータ装置とを備えた循環式浴水保温装置において、浴
水の温度を検出する浴水温度検出装置と、ヒータ装置近
傍の温度を検出するヒータ温度検田装置と、浴水保温装
置の停止時に前記浴水温度検出装置の温度検出値とヒー
タ温度検出装置の温度検出値とに対応して、循環ポンプ
運転時間の時間値を記憶している運転時間値記憶装置か
ら読み出した時間値に従って循環ポンプ装置を運転する
タイマ運転装置とを備え、ヒータ装置および該装置付近
の装置部品を余熱から保護するようにし、
更にまた本発明の浴水保温装置の第２の実施例は、浴水
保温装置が運転を開始してからの時間を計時するための
運転時間計時タイマを備え、循環ポンプ運転の時間値記
憶装置に記憶されている時間値は、浴水温度検出装置の
温度検出値と、運転時間計時タイマ値に対応するように
したので、共に浴水保温装置の運転停止時に適正な時間
、循環ポンプを運転することにより浴水が比較的熱容量
の大きなヒータ装置４の余熱を奪いヒータ装置自体およ
び該装置の付属部品等の過熱による破損等を防止するこ
とができ、特に浴水保温装置の補修後等の比較的短時間
の試運転時後等における浴水保温装置の停止時に循環ポ
ンプの運転時間が必要以上に長くなるといった無駄がな
くなり使い勝手が向上するという作用がある。[Means for Solving the Problems and Effects of the Invention] A first embodiment of the bath water warming device of the present invention includes a circulation pump device for circulating bath water in a bathtub, and a circulation pump device for keeping bath water warm. In a circulating bath water heat retention device equipped with a heater device, a bath water temperature detection device that detects the temperature of the bath water, a heater temperature detection device that detects the temperature near the heater device, and a stoppage of the bath water heat retention device. In response to the temperature detection value of the bath water temperature detection device and the temperature detection value of the heater temperature detection device, circulation is performed according to a time value read from an operation time value storage device that stores a time value of the circulation pump operation time. A second embodiment of the bath water warming device of the present invention includes a timer operating device for operating the pump device, and protects the heater device and equipment parts near the device from residual heat. The time value stored in the time value storage device for circulation pump operation is based on the temperature detection value of the bath water temperature detection device and the operation time value. Since it is made to correspond to the time measurement timer value, by operating the circulation pump for an appropriate time when the bath water warming device is stopped, the bath water absorbs residual heat from the heater device 4, which has a relatively large heat capacity, and the heater device itself In addition, it is possible to prevent damage to the attached parts of the device due to overheating, and in particular, the circulation pump is operated when the bath water warming device is stopped, such as after a relatively short test run after repair of the bath water warming device. This has the effect of eliminating wasted time, such as unnecessarily long time, and improving usability.
以下、本発明を実施例により説明する。
（１）第１の実施例
○システムの構或
以下、第１図を参照しながらシステムの構或について説
明する。
同図において、浴槽ｌ内の浴水は、浴水保温装置２０の
一部をなす循環路中を循環する。
循環路中には、浴水中の不純物を取り除くためのフィル
ター装置２、浴水を加熱保温するためのヒータ装置４お
よび浴水を殺菌するための殺菌装置５が配設されている
。
ヒータ装置４は、本実施例では、図示しないが金属製の
保護容器内に充填された絶縁油を介してシーズド・ヒー
タが配設されて構或されている。
シーズド・ヒータの熱は絶縁油を介して保護容器に伝達
されるが、絶縁油は量的にも多く、比較的大きな熱容量
がある。
循環する浴水は保護容器の外壁とこれを取り巻く樹脂製
のカバーとの間の隙間で保護容器の外壁により加熱され
る。
浴水温度を検出するための浴水温度検出装置１４および
ヒータ装置４の近傍（本実施例では保護容器の外壁表面
）の温度を検出するためのヒータ温度検出装１ｆ６は、
本実施例では共にサーミスタを使用しており、これらの
検出出力は浴水保温装置２０の運転を制御する運転制御
装置７に入力される。
運転制御装置７には更に運転／停止切り替え装置８、循
環ポンプ運転タイマｌｌ１ リード・オンリー・メモリ
ＲＯＭ等からなる時間値記憶装置ｌＯが接統され、運転
制御装置７はリレー装置ｌ２を介して循環ボンプ３をＯ
Ｎ／Ｏ Ｆ Ｆ制御し、リレー装置９を介してヒータ
装置をＯ Ｎ／Ｏ Ｆ Ｆ制御する。
運転／停止切り替え装置８はユーザーにより操作され運
転／停止信号を運転制御装置７に出力する。
運転制御装置７には、更に図示しないが温度設定装置が
接続され、浴槽内の浴水が設定された温度に達すると、
設定温度に対してある一定の小さな幅をもつ温度範囲を
保つべく循環ボンプ３の連続運転状態で、ヒータ装置４
を自動的に○Ｎ ／ ＯＦＦ制御する。これが浴水保温
装置２０の定常運転状態である。
時間値記憶装置１０は、運転制御装置７が運転／停止切
り替え装置８から停止信号を受け、ヒータ装置４への電
力供給が停止した時点における浴水温度とヒータ装置４
の近傍の温度とに対応する循環ボンプ３の適正な運転時
間を記憶している。
即ち、第１表に示すように、循環ボンプ３の運転時間は
、運転制御装置７が停止信号を受けヒータ装置４への電
力供給が停止した時点における浴水温度とヒータ装置４
の近傍の温度とに対応して浴水の循環により比較的熱容
量の大きなヒータ装置４の余熱を奪いヒータ装置４自体
およびヒータ装置の付属部品等の過熱を防止できるよう
に設定されている。
これらの設定値は運転試験の繰り返しにより実用上問題
がないように設定されている。
運転制御装置７は時間値記憶装置１０から読み出された
運転時間だけ循環ボング３を運転させるために循環ポン
プ運転タイマｌ１を動作させる。
○浴水保温装置の停止時の制御
次に、ユーザーの運転／停止切り替え装置の操作により
、浴水保温装置２０のヒータ装置４への電力供給が停止
した場合の浴水保温装置２０の制御について説明する。
ユーザーの操作により運転／停止切り替え装置８から運
転制御装置７が停止信号を受けると、運転制御装置７は
ヒータ運転停止信号を出力し、この信号を受けたリレー
装置９はヒータ装置４への電力供給を停止する。
同時に運転制御装置７は、ヒータ装置４への電力供給を
停止したときの浴水温度検出装置ｌ４とヒータ温度検出
装置６のそれぞれのサーミスタの抵抗値変化から、浴水
温度とヒータ近傍の温度を検出し、運転制御装置７は、
時間値記憶装置１０から検出した２つの温度に対応する
循環ポンプ３の運転時間値をを読み出し、循環ボンプ３
をその運転時間だけ運転制御するために循環ポンプ運転
タイマｌ１を動作させ、ヒータ装置４への電力供給を停
止してからの計時を行わせる。
その計時値が読み出された運転時間値に等しくなった時
点でリレー装置１２に循環ポンプ３の運転停止信号を出
力し、循環ポンプ３を停止させる。
以上説明した運転制御により、浴水保温装置の運転停止
時に適正な時間、循環ポンプ３が運転させられ、循環す
る浴水が比較的熱容量の大きなヒータ装置４の余熱を奪
いヒータ装置自体および該装置の付属部品等の過熱によ
る破損等を防止することができ、特に浴水保温装置の補
修後等の比較的短時間の試運転時後等における浴水保温
装置の停止時に循環ポンプの運転時間が必要以上に長く
なるといった無駄がなくなり使い勝手が向上する。
（２）第２の実施例
○システムの構戊
以下、第２図を参照しながら本発明の第２の実施例に係
わる浴水保温装置のシステムの構或について説明する。
この第２の実施例では先の第１の実施例と異なる部分に
ついてのみ説明する。
同図において、運転時間計時タイマｌ３は、運転／停止
切り替え装置８から運転信号を受けてから停止信号を受
けるまでの時間を計時する。
時間値記憶装置１０’は浴水保温装置の停止時に浴水温
度と浴水保温装置２０′の運転時間とに対応する循環ボ
ンプ３の適正な運転時間を記憶している。
即ち、第２表に示すように、循環ボンプ３の運転時間は
、運転制御装置７が停止信号を受けヒータ装置４への電
力供給が停止した時点における浴水温度とヒータ装置７
の運転時間とに対応して浴水の循環により比較的熱容量
の大きなヒータ装置４の余熱を奪いヒータ装置４自体お
よびヒータ装置の付属部品等の過熱を防止できるように
設定されている。
この第２表におけるヒータ装置４の運転時間は浴水の温
度が定常状態に達し、自動的にヒータ装置４の電源供給
が停止する前はその運転時間値をとり、それ以後はある
定数として扱い、浴水温度との組み合わせで循環ポンプ
３の運転時間を設定することにより、実用上の目的、機
能を達或することができる。
Ｏ浴水保温装置の停止時の制御
次に、浴水保温装置２０′の停止時の浴水保温装置２０
′の制御について説明する。
ユーザーの操作により運転／停止切り替え装置８から運
転制御装置７が停止信号を受けると、運転制御装置７は
ヒータ装置４の運転停止信号を出力し、この信号を受け
たリレー装置９はヒータ装置４への電力供給を停止する
。
同時に運転制御装置７は、ヒータ装置４への電力供給を
停止したときの浴水温度検出装置ｌ４と運転時間計時タ
イマ１３から浴水温度と浴水保温装置２０′のヒータ装
置４の運転時間を認識し、運転制御装置７は、時間値記
憶装置１０’から認識した２つの検出値に対応する循環
ポンブ３の運転時間値をを読み出し、循環ボンプ３をそ
の運転時間だけ運転制御する，ために循環ポンプ運転タ
イマ１ｌを動作させ、ヒータ装置４への電力供給を停止
してからの計時を行わせる。
その計時値が読み出された運転時間値に等しくなった時
点でリレー装置ｌ２に循環ボンプ３の運転停止信号を出
力し、循環ポンプ３を停止させる。
以上説明した運転制御により、浴水保温装置２０′の運
転停止指令が出された場合に、それに応じて適正な時間
だけ循環ポンプ３が運転制御され、循環する浴水が比較
的熱容量の大きなヒータ装置４の余熱を奪いヒータ装置
４自体および該装置の付属部品等の過熱を防止すること
ができる。
この制御は、特に浴水保温装置の補修後等の比較的短時
間の試運転時後等における浴水保温装置の停止時に有効
で、循環ポンプの運転時間が必要以上に長くなるといっ
た無駄がなくなる。The present invention will be explained below using examples. (1) First Embodiment System Structure The structure of the system will be described below with reference to FIG. In the figure, bath water in a bathtub l circulates in a circulation path that forms a part of a bath water heat retention device 20. Disposed in the circulation path are a filter device 2 for removing impurities from the bath water, a heater device 4 for heating and keeping the bath water warm, and a sterilizer 5 for sterilizing the bath water. In this embodiment, the heater device 4 includes a seeded heater (not shown) disposed in a metal protective container filled with insulating oil. The heat of the seeded heater is transferred to the protective container via insulating oil, but insulating oil is large in quantity and has a relatively large heat capacity. The circulating bath water is heated by the outer wall of the protective container in the gap between the outer wall of the protective container and the surrounding resin cover. The bath water temperature detection device 14 for detecting the bath water temperature and the heater temperature detection device 1f6 for detecting the temperature near the heater device 4 (in this embodiment, the outer wall surface of the protective container) are as follows:
In this embodiment, thermistors are used in both cases, and their detection outputs are input to the operation control device 7 that controls the operation of the bath water heat retention device 20. The operation control device 7 is further connected with a time value storage device 1O consisting of an operation/stop switching device 8, a circulation pump operation timer 11, a read-only memory ROM, etc. Bump 3 to O
The heater device is controlled to be turned on and off through the relay device 9. The run/stop switching device 8 is operated by a user and outputs a run/stop signal to the operation control device 7. A temperature setting device (not shown) is further connected to the operation control device 7, and when the bath water in the bathtub reaches a set temperature,
While the circulation pump 3 is in continuous operation to maintain a temperature range with a certain small width relative to the set temperature, the heater device 4
Automatically controls ○N/OFF. This is the steady operating state of the bath water warming device 20. The time value storage device 10 stores the bath water temperature and the heater device 4 at the time when the operation control device 7 receives a stop signal from the operation/stop switching device 8 and the power supply to the heater device 4 is stopped.
The appropriate operating time of the circulation pump 3 corresponding to the temperature in the vicinity of is memorized. That is, as shown in Table 1, the operation time of the circulation pump 3 is determined by the bath water temperature and the heater device 4 at the time when the operation control device 7 receives a stop signal and the power supply to the heater device 4 is stopped.
The heater device 4 is designed to remove residual heat from the heater device 4, which has a relatively large heat capacity, by circulating bath water in response to the temperature in the vicinity of the heater device 4, thereby preventing overheating of the heater device 4 itself and its attached parts. These set values are set through repeated driving tests so that there are no problems in practice. The operation control device 7 operates the circulation pump operation timer l1 in order to operate the circulation bong 3 for the operation time read from the time value storage device 10. ○ Control when stopping the bath water heat retention device Next, regarding the control of the bath water heat retention device 20 when the power supply to the heater device 4 of the bath water heat retention device 20 is stopped due to the operation of the operation/stop switching device by the user. explain. When the operation control device 7 receives a stop signal from the operation/stop switching device 8 due to a user's operation, the operation control device 7 outputs a heater operation stop signal, and the relay device 9 that receives this signal outputs power to the heater device 4. Stop supply. At the same time, the operation control device 7 detects the bath water temperature and the temperature near the heater from the resistance value changes of the thermistors of the bath water temperature detection device 14 and the heater temperature detection device 6 when power supply to the heater device 4 is stopped. The operation control device 7 detects the
The operation time values of the circulation pump 3 corresponding to the two detected temperatures are read out from the time value storage device 10, and
In order to control the operation of the heater device 4 for that operating time, the circulation pump operation timer l1 is operated to measure the time after the power supply to the heater device 4 is stopped. When the time value becomes equal to the read operation time value, an operation stop signal for the circulation pump 3 is output to the relay device 12, and the circulation pump 3 is stopped. With the operation control described above, the circulation pump 3 is operated for an appropriate time when the bath water heat retention device is stopped, and the circulating bath water absorbs the residual heat of the heater device 4, which has a relatively large heat capacity, and removes the residual heat from the heater device itself and the device. Damage to the attached parts due to overheating can be prevented, and the operation time of the circulation pump is required when the bath water insulation device is stopped, especially after a relatively short test run such as after repair of the bath water insulation device. There is no need for unnecessary length, which improves usability. (2) Second Embodiment - System Structure The system structure of a bath water warming device according to a second embodiment of the present invention will be described below with reference to FIG. In this second embodiment, only the parts different from the first embodiment described above will be explained. In the figure, an operating time timer l3 measures the time from when it receives an operation signal from the operation/stop switching device 8 until it receives a stop signal. The time value storage device 10' stores an appropriate operating time of the circulation pump 3 corresponding to the bath water temperature and the operating time of the bath water warming device 20' when the bath water warming device is stopped. That is, as shown in Table 2, the operating time of the circulation pump 3 is determined by the bath water temperature and the heater device 7 at the time when the operation control device 7 receives a stop signal and the power supply to the heater device 4 is stopped.
The setting is such that residual heat from the heater device 4 having a relatively large heat capacity is removed by circulation of bath water in accordance with the operating time of the heater device 4, thereby preventing overheating of the heater device 4 itself and attached parts of the heater device. The operating time of the heater device 4 in Table 2 takes the operating time value before the temperature of the bath water reaches a steady state and the power supply to the heater device 4 is automatically stopped, and thereafter it is treated as a constant. By setting the operation time of the circulation pump 3 in combination with the bath water temperature, the practical purpose and function can be achieved. O Control when the bath water heat retention device is stopped Next, the bath water heat retention device 20 when the bath water heat retention device 20' is stopped
′ control will be explained. When the operation control device 7 receives a stop signal from the operation/stop switching device 8 due to a user's operation, the operation control device 7 outputs an operation stop signal for the heater device 4 . Stop power supply to. At the same time, the operation control device 7 determines the bath water temperature and the operation time of the heater device 4 of the bath water heat retention device 20' from the bath water temperature detection device 14 and the operation time clock timer 13 when the power supply to the heater device 4 is stopped. Then, the operation control device 7 reads out the operation time value of the circulation pump 3 corresponding to the two detected values recognized from the time value storage device 10', and controls the operation of the circulation pump 3 for that operation time. The circulation pump operation timer 1l is operated to measure time after the power supply to the heater device 4 is stopped. When the time value becomes equal to the read operation time value, an operation stop signal for the circulation pump 3 is output to the relay device l2, and the circulation pump 3 is stopped. With the operation control described above, when a command to stop the operation of the bath water warming device 20' is issued, the operation of the circulation pump 3 is controlled for an appropriate time accordingly, and the circulating bath water is heated to a heater with a relatively large heat capacity. It is possible to remove residual heat from the device 4 and prevent overheating of the heater device 4 itself and its attached parts. This control is particularly effective when the bath water warming device is stopped after a relatively short test run, such as after repair of the bath water warming device, and eliminates waste such as unnecessarily long operation time of the circulation pump.
以上のように本発明によれば、浴水保温装置の運転停止
時に適正な時間、循環ポンプを運転することにより、循
環する浴水が比較的熱容量の太きなヒータ装置４の余熱
を奪いヒータ装置自体および該装置の付属部品等の過熱
による破損等を防止することができ、特に浴水保温装置
の補修後等の比較的短時間の試運転時後等における浴水
保温装置のヒータ装置４の停止時に循環ポンプの運転時
間が必要以上に長くなるといった無駄がなくなり使い勝
手が向上するという効果が得られる。
第 １
表
第 ２
表As described above, according to the present invention, by operating the circulation pump for an appropriate period of time when the operation of the bath water warming device is stopped, the circulating bath water absorbs residual heat from the heater device 4, which has a relatively large heat capacity, and heats the heater. It is possible to prevent damage to the device itself and the attached parts of the device due to overheating, especially when the heater device 4 of the bath water warming device is used after a relatively short test run such as after repair of the bath water warming device. This eliminates waste, such as unnecessarily long operation time of the circulation pump when it is stopped, and improves usability. Table 1 Table 2
図面は本発明の実施例に係り、第１図は第１の実施例に
係わる浴水保温装置のシステムブロック図、第２図は第
２の実施例に係わる浴水保温装置のシステムブロック図
である。
１は浴槽、３は循環ポンプ、４はヒータ装置、６はヒー
タ温度検出装置、ｌＯ、１０′は時間値記憶装置、ｌ１
は循環ポンプ運転タイマ、ｌ３は運転時間計時タイマ、
１４浴水温度検出装置であり、運転制御装置７、時間値
記憶装置１０、ｌＯ、循環ポンプ運転タイマ１１はタイ
マ運転装置の主要構或要素である。The drawings relate to embodiments of the present invention; FIG. 1 is a system block diagram of a bath water heat retention device according to the first embodiment, and FIG. 2 is a system block diagram of a bath water heat retention device according to the second embodiment. be. 1 is a bathtub, 3 is a circulation pump, 4 is a heater device, 6 is a heater temperature detection device, 1O, 10' is a time value storage device, 11
is the circulation pump operation timer, l3 is the operation time measurement timer,
14 is a bath water temperature detection device, and the operation control device 7, time value storage device 10, IO, and circulation pump operation timer 11 are the main components of the timer operation device.
Claims (1)
と、浴水を保温するためのヒータ装置とを備えた循環式
浴水保温装置において、浴水の温度を検出する浴水温度
検出装置と、ヒータ装置近傍の温度を検出するヒータ温
度検出装置と、浴水保温装置の停止時に前記浴水温度検
出装置の温度検出値とヒータ温度検出装置の温度検出値
とに対応して、循環ポンプ運転時間の時間値を記憶して
いる運転時間値記憶装置から読み出した時間値に従って
循環ポンプ装置を運転するタイマ運転装置とを備え、ヒ
ータ装置および該装置付近の装置部品を余熱から保護す
ることを特徴とする循環式浴水温度保温装置。 II、浴槽内の浴水を循環させるための循環ポンプ装置と
、浴水を保温するためのヒータ装置とを備えた循環式浴
水保温装置において、浴水の温度を検出する浴水温度検
出装置と、浴水保温装置が運転を開始してからの運転時
間を計時するための運転時間計時タイマと、浴水保温装
置の停止時に前記浴水温度検出装置の温度検出値と前記
運転時間とに対応して、循環ポンプ運転時間の時間値を
記憶している運転時間値記憶装置から読み出した時間値
に従って循環ポンプ装置を運転するタイマ運転装置とを
備え、ヒータ装置および該装置付近の装置部品を余熱か
ら保護することを特徴とする循環式浴水保温装置。[Claims] I. A circulating bath water warming device that includes a circulation pump device for circulating bath water in a bathtub and a heater device for keeping bath water warm, in which the temperature of bath water is detected. a heater temperature detection device that detects the temperature near the heater device; and a temperature detection value of the bath water temperature detection device and a temperature detection value of the heater temperature detection device when the bath water heat retention device is stopped. Correspondingly, it is equipped with a timer operation device that operates the circulation pump device according to a time value read from an operation time value storage device that stores the time value of the circulation pump operation time, and the heater device and device parts near the device are A circulating bath water temperature retaining device that protects from residual heat. II. A bath water temperature detection device that detects the temperature of bath water in a circulating bath water warming device that includes a circulation pump device for circulating bath water in the bathtub and a heater device for keeping the bath water warm. , an operating time timer for measuring the operating time since the bath water warming device starts operation, and a temperature detection value of the bath water temperature detection device and the operating time when the bath water warming device is stopped. Correspondingly, it is equipped with a timer operation device that operates the circulation pump device according to a time value read from an operation time value storage device that stores the time value of the circulation pump operation time, and the heater device and device parts near the device are A circulating bath water heat retention device that protects from residual heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1236826A JP2864254B2 (en) | 1989-09-14 | 1989-09-14 | Recirculating bath water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1236826A JP2864254B2 (en) | 1989-09-14 | 1989-09-14 | Recirculating bath water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03102136A true JPH03102136A (en) | 1991-04-26 |
| JP2864254B2 JP2864254B2 (en) | 1999-03-03 |
Family
ID=17006357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1236826A Expired - Fee Related JP2864254B2 (en) | 1989-09-14 | 1989-09-14 | Recirculating bath water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2864254B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120090341A1 (en) * | 2010-10-14 | 2012-04-19 | Takagi Industrial Co., Ltd. | Water heater and control method therefor |
-
1989
- 1989-09-14 JP JP1236826A patent/JP2864254B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120090341A1 (en) * | 2010-10-14 | 2012-04-19 | Takagi Industrial Co., Ltd. | Water heater and control method therefor |
| US9182159B2 (en) * | 2010-10-14 | 2015-11-10 | Purpose Company Limited | Water heater and control method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2864254B2 (en) | 1999-03-03 |
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