JPH0549896B2 - - Google Patents
Info
- Publication number
- JPH0549896B2 JPH0549896B2 JP8640684A JP8640684A JPH0549896B2 JP H0549896 B2 JPH0549896 B2 JP H0549896B2 JP 8640684 A JP8640684 A JP 8640684A JP 8640684 A JP8640684 A JP 8640684A JP H0549896 B2 JPH0549896 B2 JP H0549896B2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- control valve
- flow rate
- water supply
- temperature
- 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 - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 190
- 238000001514 detection method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 4
- 238000007710 freezing Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Fluid Heaters (AREA)
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は給湯停止時において給湯管内の湯温を
所定値以上に保ち瞬時給湯を実現する給湯装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a water heater that maintains the temperature of hot water in a hot water supply pipe at a predetermined value or higher when hot water supply is stopped and realizes instantaneous hot water supply.
従来例の構成とその問題点
従来この種の給湯装置には第１図に示すような
ものがあつた。Conventional Structure and Problems There has been a conventional water heater of this type as shown in FIG.
第１図において給水用のシスターン１から給湯
熱源機２へは給湯管３を経由して給水が行われ
る。給湯熱源機２で作られた湯は、給湯送り管４
から給湯戻り管５へ循環ポンプ６で循環が行わ
れ、給水管７及び給水管３を経て再び給湯熱源機
２へ戻る。給湯送り管４の途中に湯水混合弁８が
接続されており、この湯水混合弁８にはシスター
ン１から給水を行う給水管７も接続され、湯と水
を混合している。混合された混合湯は、給湯送り
管４を経て給湯栓９，１０から供給される。１１
はフロースイツチであり、給湯栓９，１０が開成
されているか閉成されているかを流量値としてと
らえている。 In FIG. 1, water is supplied from a water supply cistern 1 to a hot water supply heat source device 2 via a hot water supply pipe 3. The hot water made by the hot water heat source device 2 is sent to the hot water supply pipe 4.
The hot water is circulated from there to the hot water supply return pipe 5 by the circulation pump 6, and returns to the hot water heat source device 2 again via the water supply pipe 7 and the water supply pipe 3. A hot water mixing valve 8 is connected in the middle of the hot water supply pipe 4, and a water supply pipe 7 for supplying water from the cistern 1 is also connected to this hot water mixing valve 8 to mix hot water and water. The mixed hot water is supplied from hot water taps 9 and 10 via a hot water supply pipe 4. 11
is a flow switch, which determines whether the hot water taps 9 and 10 are open or closed as a flow rate value.
動作としては、まず給湯栓９，１０が閉成され
ている時はフロースイツチ１１が流量が低いこと
を検出し、循環ポンプ６の能力を落とし低圧循環
をさせる。給湯栓９，１０が開成された時は流量
が大きいことをフロースイツチ１１が検出し、循
環ポンプ６を昇圧循環させる。給湯栓９，１０で
供給された残りの湯は給湯戻り管５を経て給湯熱
源機２に戻る。湯水混合弁８は給湯熱源機２から
の湯と、給湯戻り管５からの循環湯及び給水管７
からの水を混ぜて供給している。 In operation, first, when the hot water taps 9 and 10 are closed, the flow switch 11 detects that the flow rate is low, and reduces the capacity of the circulation pump 6 to perform low-pressure circulation. When the hot water taps 9 and 10 are opened, the flow switch 11 detects that the flow rate is large and causes the circulation pump 6 to perform pressurized circulation. The remaining hot water supplied by the hot water taps 9 and 10 returns to the hot water heat source device 2 via the hot water return pipe 5. The hot water mixing valve 8 receives hot water from the hot water heat source device 2, circulating hot water from the hot water return pipe 5, and water supply pipe 7.
It is supplied by mixing water from
従来の循環給湯装置は以上のように構成されて
いたため次のような問題点を有していた。 Since the conventional circulating hot water supply device was constructed as described above, it had the following problems.
(1) 常に湯を循環させているため給湯送り管４、
給湯戻り管５からの放熱ロスが大きく、また循
環ポンプ６も電力を消費するためエネルギーを
多く必要とした。(1) Since hot water is constantly being circulated, the hot water supply pipe 4,
The heat radiation loss from the hot water supply return pipe 5 was large, and the circulation pump 6 also consumed electric power, so a large amount of energy was required.
(2) 給湯戻り管５及び循環ポンプ６が必須である
ため機材費用が高価で、配管工事も複雑なもの
となつていた。(2) Since the hot water supply return pipe 5 and the circulation pump 6 are required, equipment costs are high and the piping work is complicated.
発明の目的
本発明はこのような従来の問題点を解消するも
のであり、循環回路や循環ポンプを使用せずに瞬
時給湯が実現でき給湯温度の調節も可能な給湯装
置を提供することを目的とする。Purpose of the Invention The purpose of the present invention is to solve these conventional problems, and it is an object of the present invention to provide a water heater that can instantaneously supply hot water without using a circulation circuit or a circulation pump, and can also adjust the temperature of hot water. shall be.
発明の構成
この目的を達成するため本発明は、給湯熱源機
から湯を給湯する給湯管と、水を供給する給水管
と、これら給湯管と給水管が接続された湯水混合
弁と、混合湯量を検出する流量検出器と、混合湯
温あるいは給湯管の湯温を検出する湯温検出器
と、混合湯量の制御を行う制御弁と、流量検出器
と湯温検出器の信号に基づいて前記制御弁を湯温
検出器の信号が所定値以下では制御弁を開成し流
量検出器の信号に基づいて開度調節を行うととも
に、所定値以上では制御弁を閉成する制御器をも
つて構成し、給湯の不使用時に滞留している湯の
温度が下つたら制御弁を開成して低温湯を排出
し、上つたら制御弁を閉成し、同動作に加え制御
弁開成時の流量調節機能を併せ持たせることによ
り、常に給湯管内を所定の温度以上の湯で満たし
ておき瞬時給湯を達成するものである。Composition of the Invention In order to achieve this object, the present invention provides a hot water supply pipe for supplying hot water from a water heater heat source device, a water supply pipe for supplying water, a hot water mixing valve to which these hot water supply pipes and the water supply pipe are connected, and a mixing valve for the amount of hot water to be mixed. a flow rate detector that detects the water temperature, a hot water temperature detector that detects the mixed water temperature or the hot water temperature of the hot water supply pipe, a control valve that controls the amount of mixed hot water, and The control valve is configured with a controller that opens the control valve when the signal from the hot water temperature detector is below a predetermined value, adjusts the opening based on the signal from the flow rate detector, and closes the control valve when the signal exceeds the predetermined value. When the temperature of the hot water that remains when the hot water supply is not in use drops, the control valve is opened to discharge the low-temperature hot water, and when the temperature rises, the control valve is closed, and in addition to the same operation, the flow rate when the control valve is opened is By combining this with an adjustment function, the hot water supply pipe is always filled with hot water at a predetermined temperature or higher, achieving instantaneous hot water supply.
実施例の説明
次に本発明の実施例について、第２図と第３図
を用いて説明する。DESCRIPTION OF EMBODIMENTS Next, embodiments of the present invention will be described with reference to FIGS. 2 and 3.
第２図において、給湯熱源機１２から湯を供給
する給湯管１３と給水管１４が湯水混合弁１５に
接続されており、この湯水混合弁１５で調温され
た混合湯は端末給湯口から供給される。湯水混合
弁１５の後には流量検出器１６、湯温サーミスタ
１７及び湯の排出・排出停止を行なう制御弁１８
が設けてあり、この制御弁１８及び湯水混合弁１
５は制御器１９により制御される。２０は湯水混
合弁１５の設定部である。第３図に湯水混合弁１
５と制御弁１８の詳細を示す。 In FIG. 2, a hot water pipe 13 and a water supply pipe 14 that supply hot water from a hot water heat source device 12 are connected to a hot water mixing valve 15, and the mixed hot water whose temperature is controlled by this hot water mixing valve 15 is supplied from a terminal hot water supply port. be done. After the hot water mixing valve 15, there is a flow rate detector 16, a hot water temperature thermistor 17, and a control valve 18 for discharging and stopping the hot water.
is provided, and this control valve 18 and hot water mixing valve 1
5 is controlled by a controller 19. 20 is a setting section of the hot water mixing valve 15. Figure 3 shows hot water mixing valve 1.
5 and control valve 18 are shown in detail.
湯水混合弁１５は自動調温型であり、混合比率
を調節すると比率制御弁部２１と調節用の信号を
得る湯温サーミスタ１７及び前出の設定部２０か
ら構成される。比率制御弁部２１は湯側弁体２２
及び水側弁体２３が、弁軸２４に両端が規制され
た状態でばね２５により外側に付勢されて設けら
れ、弁軸２４は外設されたモータ２６によりギヤ
ボツクス２７を介して駆動される。そして設定部
２０で設定した温度と、湯温サーミスタ１７で検
出される温度を制御器１９で比較し、設定温度が
得られる混合比率に比率制御弁部２１を調節して
いる。制御弁１８は流路を開閉する弁体２８が弁
軸２９に取り付けられており、弁軸２９は外設さ
れたモータ３０によりギヤボツクス３１を介して
駆動される。湯温サーミスタ１７で検出される温
度信号は湯水混合弁１５の制御と制御弁１８の制
御に利用される。また流量検出器１６の信号は湯
水混合弁１５と制御弁１８の制御及び流量積算、
流量と温度の演算等に利用される。制御はいずれ
も制御器１９を介して行われ、また制御器１９は
時限制御機能を併せ持つている。 The hot water mixing valve 15 is of an automatic temperature control type, and is composed of a ratio control valve section 21 when adjusting the mixing ratio, a hot water temperature thermistor 17 that obtains a signal for adjustment, and the aforementioned setting section 20. The ratio control valve part 21 has a hot water side valve body 22
A water-side valve body 23 is provided with both ends restricted by a valve shaft 24 and biased outwardly by a spring 25, and the valve shaft 24 is driven by an external motor 26 via a gear box 27. . Then, the controller 19 compares the temperature set by the setting unit 20 and the temperature detected by the hot water temperature thermistor 17, and adjusts the ratio control valve unit 21 to a mixing ratio that provides the set temperature. In the control valve 18, a valve body 28 for opening and closing a flow path is attached to a valve shaft 29, and the valve shaft 29 is driven by an external motor 30 via a gear box 31. The temperature signal detected by the hot water temperature thermistor 17 is used to control the hot water mixing valve 15 and the control valve 18. In addition, the signal from the flow rate detector 16 controls the hot water mixing valve 15 and the control valve 18 and integrates the flow rate.
Used for flow rate and temperature calculations, etc. All controls are performed via the controller 19, and the controller 19 also has a time control function.
次にこの実施例の動作を説明する。 Next, the operation of this embodiment will be explained.
設定部２０で温度の設定を行い、スイツチ（図
示せず）を投入すると制御弁１８は閉成され、流
量検出器１６が湯の流動を検出し湯水混合弁１５
が駆動され設定部２０で設定した温度が得られる
ように湯と水の混合比率を調節し、末端給湯口か
ら設定どおりの湯が供給される。 When the temperature is set in the setting unit 20 and a switch (not shown) is turned on, the control valve 18 is closed, the flow rate detector 16 detects the flow of hot water, and the hot water mixing valve 15 is closed.
is driven to adjust the mixing ratio of hot water and water so that the temperature set by the setting unit 20 is obtained, and the hot water as set is supplied from the terminal hot water supply port.
もし希望するなら設定部２０で瞬時給湯量の設
定や積算湯量を設定することも可能である。この
場合、制御弁１８は設定どおりの流量値が得られ
る開度まで流路を開度調節したり、設定積算流量
値に達した段階で制御弁１８を閉成させ定量給湯
を行う。また流量検出器１６の値と湯温サーミス
タ１７の信号を演算し、概略の供給熱量を知るこ
とも可能である。 If desired, it is also possible to set the instantaneous amount of hot water supply or the cumulative amount of hot water using the setting section 20. In this case, the control valve 18 adjusts the opening of the flow path until the set flow rate value is obtained, or closes the control valve 18 when the set integrated flow rate value is reached to supply a fixed amount of hot water. It is also possible to calculate the approximate amount of heat supplied by calculating the value of the flow rate detector 16 and the signal of the hot water temperature thermistor 17.
設定部２０のスイツチを切ると制御弁１８は閉
成され給湯は停止される。同時に流量検出器１６
が湯の供給停止を検出して湯水混合弁１５の駆動
も停止される。給湯が停止されている状態では自
然放熱により湯温サーミスタ１７周辺の温度が設
定値以下に下ると、制御弁１８は強制的に開成さ
れ、冷えた湯が端末給湯口から排出される。そし
て給湯管１３内の冷えた湯は排出され、給湯熱源
機１２からの熱い湯が給湯管１３内に満たされ、
湯温サーミスタ１７周辺の温度が設定値以上に上
がると制御弁１８は閉成される。この時、排出さ
れる冷えた湯の瞬時流量値は予め定めた流量で排
出することができる。すなわち設定値どおりの流
量となる開度にまで流量検出器１６の信号を見つ
つ制御弁１８を調整し、湯を大量に排出すること
を防止している。以後湯温サーミスタ１７で検出
される温度に応じて制御弁１８は制御器１９を介
して開閉制御され、開成時の流量は設定値どおり
となる。このため給湯を再開した場合、給湯管１
３内の湯が冷え切つた状態でないので、端末給湯
口では瞬時に欲しい温度レベルに湯温が到達でき
る。この他、この給湯装置は凍結防止の用途にも
供することが可能である。すなわち湯温サーミス
タ１７で検出される温度が所定値以下に下つた場
合制御弁１８が開成され、冷えた給湯管１３内の
湯及び冷え切つた給水管１４内の水が末端給湯口
から排出され、より温度の高い湯または水に置き
替えることができるので凍結を未然に防ぐことが
可能となる。制御器１９は時限制御機能を有して
いるため、瞬時給湯の用途においてもまた凍結防
止の用途においても動作させる時間帯を設定する
ことにより、常温湯や水を排出、排出停止させず
に必要な時間帯だけ動作させエネルギーを節約す
ることができる。また湯水混合弁１５は本実施例
では電気駆動式の自動調温型を用いたが、バイメ
タルやワツクスサーモ等を用いた機械式の自動調
温型あるいは手動式でも良い。更に湯温サーミス
タ１７は湯水混合弁１５用と別個に制御弁１８用
として給湯管１３に設けても良い。 When the setting unit 20 is turned off, the control valve 18 is closed and hot water supply is stopped. At the same time, the flow rate detector 16
detects that the supply of hot water has stopped, and the driving of the hot water mixing valve 15 is also stopped. When hot water supply is stopped and the temperature around the hot water temperature thermistor 17 falls below a set value due to natural heat radiation, the control valve 18 is forcibly opened and cold hot water is discharged from the terminal hot water supply port. The cold hot water in the hot water supply pipe 13 is then discharged, and the hot water from the hot water heat source device 12 is filled in the hot water supply pipe 13.
When the temperature around the hot water temperature thermistor 17 rises above a set value, the control valve 18 is closed. At this time, the instantaneous flow rate value of the cooled hot water discharged can be discharged at a predetermined flow rate. That is, the control valve 18 is adjusted while monitoring the signal from the flow rate detector 16 until the opening degree reaches the set value, thereby preventing a large amount of hot water from being discharged. Thereafter, the control valve 18 is controlled to open and close via the controller 19 according to the temperature detected by the hot water temperature thermistor 17, and the flow rate when opened is the same as the set value. Therefore, when hot water supply is restarted, hot water supply pipe 1
Since the hot water in 3 is not completely cold, the water temperature can instantly reach the desired temperature level at the terminal hot water inlet. In addition, this water heater can also be used for anti-freezing purposes. That is, when the temperature detected by the hot water temperature thermistor 17 falls below a predetermined value, the control valve 18 is opened, and the hot water in the cold water supply pipe 13 and the water in the cold water supply pipe 14 are discharged from the terminal hot water supply port. Since it can be replaced with warmer water or hot water, it is possible to prevent freezing. Since the controller 19 has a time limit control function, by setting the operating time for instant hot water supply and antifreeze applications, you can discharge room temperature hot water or water as needed without stopping the discharge. It can save energy by operating only during certain hours. Further, although the hot water mixing valve 15 is an electrically driven automatic temperature control type in this embodiment, it may be a mechanical automatic temperature control type using a bimetal or wax thermometer, or a manual type. Furthermore, the hot water temperature thermistor 17 may be provided in the hot water supply pipe 13 for the hot water mixing valve 15 and for the control valve 18 separately.
本実施例における効果を述べると、制御器１９
は制御弁１８を時限制御するため給湯が必要な時
間帯だけ湯の排出、排出停止が行われるので、利
便性を維持しつつ省エネルギーが達成できる。更
に流量検出器１６の信号に基づいて湯水混合弁１
５の動作を給湯の停止中は停止させているため、
再使用時には設定変更をしない限り前回と同一温
度の弁位置から制御スタートするので設定温度が
早く得られる効果を有する。 To describe the effects of this embodiment, the controller 19
Since the control valve 18 is time-controlled, the hot water is discharged and the discharge is stopped only during the time period when hot water supply is required, so that energy saving can be achieved while maintaining convenience. Furthermore, based on the signal from the flow rate detector 16, the hot water mixing valve 1
Since the operation in step 5 is stopped while hot water supply is stopped,
When reusing the valve, unless the settings are changed, the control starts from the same valve position as the previous time, which has the effect of quickly reaching the set temperature.
発明の効果
本発明は湯水混合弁を用いた給湯装置の給湯不
使用時において、湯温検出器で検出される信号が
所定値以下では制御弁を開成し流量検出器の信号
に基づいて開度調節を行うとともに、所定値以上
では制御弁を閉成しているため次のような効果を
有する。Effects of the Invention The present invention, when a water heater using a hot water mixing valve is not in use, opens the control valve when the signal detected by the hot water temperature detector is below a predetermined value, and adjusts the opening level based on the signal from the flow rate detector. In addition to the adjustment, the control valve is closed when the value exceeds a predetermined value, resulting in the following effects.
(1) 循環回路や循環ポンプを使用せずに瞬時給湯
が可能となり、かつ従来と比べ給湯戻り管がな
いため放熱損失も低減でき、簡単な構成で安価
な、かつ省エネルギーを達成した給湯装置が実
現できる。(1) Instant hot water supply is possible without using a circulation circuit or circulation pump, and there is no hot water return pipe compared to conventional hot water supply pipes, which reduces heat radiation loss, and the water heater has a simple configuration, is inexpensive, and achieves energy savings. realizable.
(2) 湯水混合弁を用いているため給湯温度の調節
が可能となり、制御弁で冷えた湯を排出すると
湯、水とも連通しているので双方が排出され、
瞬時給湯とともに凍結防止の用途にも供するこ
とができる。(2) Since a hot water mixing valve is used, it is possible to adjust the temperature of the hot water supply, and when the cold water is discharged using the control valve, both the hot water and water are communicated, so both are discharged.
It can be used for instant hot water supply as well as anti-freezing purposes.
(3) 流量検出器の信号を利用して制御弁の開度調
節が可能となり、湯の排出時に大量に湯が排出
されることを制限でき、エネルギーや水の節約
ができる。(3) It is possible to adjust the opening of the control valve using the signal from the flow rate detector, which limits the amount of hot water that is discharged when discharging hot water, saving energy and water.
第１図は従来の給湯装置を示す構成図、第２図
は本発明の一実施例を示す給湯装置の構成図、第
３図は同湯水混合弁、制御弁の詳細を示す断面図
である。
１２……給湯熱源機、１３……給湯管、１４…
…給水管、１５……湯水混合弁、１６……流量検
出器、１７……湯温サーミスタ（湯温検出器、混
合湯温検出部）、１８……制御弁、１９……制御
器、２０……設定部、２１……比率制御弁部。
FIG. 1 is a configuration diagram showing a conventional water heater, FIG. 2 is a configuration diagram of a water heater according to an embodiment of the present invention, and FIG. 3 is a sectional view showing details of a hot water mixing valve and a control valve. . 12...Hot water heat source machine, 13...Hot water pipe, 14...
... Water supply pipe, 15 ... Hot water mixing valve, 16 ... Flow rate detector, 17 ... Hot water temperature thermistor (hot water temperature detector, mixed water temperature detection part), 18 ... Control valve, 19 ... Controller, 20 ...Setting section, 21...Ratio control valve section.
Claims (1)
供給する給水管と、前記給湯管と前記給水管が接
続された湯水混合弁と、混合湯量を検出する流量
検出器と、混合湯温あるいは給湯管の湯温を検出
する湯温検出器と、混合湯量の制御を行う制御弁
と、前記流量検出器と前記湯温検出器の信号に基
づいて前記制御弁を、湯温検出器の信号が所定値
以下では制御弁を開成し流量検出器の信号に基づ
いて開度調節を行うとともに、所定値以上では制
御弁を閉成する制御器より成る給湯装置。 ２ 制御器は制御弁を時限制御する特許請求の範
囲第１項記載の給湯装置。 ３ 制御器は流量検出器の信号に基づいて湯水混
合弁の動作を起動、停止させた特許請求の範囲第
１項記載の給湯装置。[Scope of Claims] 1. A hot water pipe that supplies hot water from a hot water heat source device, a water supply pipe that supplies water, a hot water mixing valve to which the hot water pipe and the water supply pipe are connected, and a flow rate detection device that detects the amount of mixed hot water. a water temperature detector that detects the mixed water temperature or the water temperature of the hot water supply pipe; a control valve that controls the amount of mixed hot water; and a control valve that controls the control valve based on signals from the flow rate detector and the water temperature detector A water heater comprising a controller that opens a control valve when the signal from a hot water temperature detector is below a predetermined value, adjusts the opening based on the signal from a flow rate detector, and closes the control valve when the signal is above a predetermined value. 2. The water heater according to claim 1, wherein the controller controls the control valve in a timed manner. 3. The water heater according to claim 1, wherein the controller starts and stops the operation of the hot water mixing valve based on the signal from the flow rate detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8640684A JPS60228827A (en) | 1984-04-27 | 1984-04-27 | Hot-water supplier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8640684A JPS60228827A (en) | 1984-04-27 | 1984-04-27 | Hot-water supplier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60228827A JPS60228827A (en) | 1985-11-14 |
| JPH0549896B2 true JPH0549896B2 (en) | 1993-07-27 |
Family
ID=13885980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8640684A Granted JPS60228827A (en) | 1984-04-27 | 1984-04-27 | Hot-water supplier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60228827A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2532382B2 (en) * | 1986-04-11 | 1996-09-11 | 松下電器産業株式会社 | Hot water mixing device |
| JPH0429302Y2 (en) * | 1986-05-02 | 1992-07-16 | ||
| JPS6334947U (en) * | 1986-08-21 | 1988-03-07 | ||
| JPS63286626A (en) * | 1987-05-19 | 1988-11-24 | Sekisui Chem Co Ltd | Water feeding, hot-water supplying and pressurizing pump unit |
| JPH044613U (en) * | 1990-04-23 | 1992-01-16 | ||
| JP6627338B2 (en) * | 2015-09-04 | 2020-01-08 | Toto株式会社 | Hot water supply system |
-
1984
- 1984-04-27 JP JP8640684A patent/JPS60228827A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60228827A (en) | 1985-11-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |