JP2010025394A - Hot water generating device - Google Patents

Hot water generating device Download PDF

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Publication number
JP2010025394A
JP2010025394A JP2008185422A JP2008185422A JP2010025394A JP 2010025394 A JP2010025394 A JP 2010025394A JP 2008185422 A JP2008185422 A JP 2008185422A JP 2008185422 A JP2008185422 A JP 2008185422A JP 2010025394 A JP2010025394 A JP 2010025394A
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hot water
pipe
valve
drain
cold water
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Japanese (ja)
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Hideaki Yumoto
秀昭 湯本
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TLV Co Ltd
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TLV Co Ltd
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Priority to JP2008185422A priority Critical patent/JP2010025394A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water generating device ejecting hot water of comparatively low temperature when the ejection of hot water is restarted. <P>SOLUTION: A steam supply pipe 2, a drainage discharge pipe 3, a cold water intake pipe 4 and a hot water ejection pipe 5 are connected to a heat exchanger 1. An electric valve 8 as an operating valve is disposed in the steam supply pipe 2. A flow switch 36 is disposed in the cold water intake pipe 4. The electric valve 8 as the operating valve is closed when the ejection of hot water is stopped, and the flow switch 36 does not detect flowing-down of cold water. Thus the electric valve 8 as the operating valve is closed at an early point when the ejection of hot water is stopped, and the hot water of comparatively low temperature is ejected when the ejection of hot water is restarted. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、蒸気の熱で冷水を加熱することにより温水を生成する温水生成装置に関し、温水の取出が停止された場合に温水が設定温度以上に昇温することを抑制できるようにしたものに関する。   The present invention relates to a hot water generating device that generates hot water by heating cold water with the heat of steam, and relates to an apparatus that can suppress the temperature of hot water from rising above a set temperature when the hot water is taken out. .

従来の温水生成装置は、例えば特開2002−130821に示されたものがある。これは、熱交換器に蒸気供給管とドレン排出管と冷水取入管並びに温水取出管を接続し、蒸気供給管に操作弁を取り付け、温水取出管に温度センサを設け、温水の取出が停止されて温度センサで検出される温水の温度が設定温度よりも所定温度上昇した場合に、操作弁を閉弁させるようにしたものである。温水の取出が停止されて温度センサで検出される温水の温度が設定温度よりも所定温度上昇した場合に、操作弁を閉弁させて蒸気が熱交換器に供給されることを防止することにより、温水が設定温度以上に昇温することを抑制するものである。   A conventional hot water generator is disclosed in, for example, Japanese Patent Application Laid-Open No. 2002-130821. This is because the steam supply pipe, drain discharge pipe, cold water intake pipe and hot water discharge pipe are connected to the heat exchanger, an operation valve is attached to the steam supply pipe, a temperature sensor is provided in the hot water discharge pipe, and hot water extraction is stopped. When the temperature of the hot water detected by the temperature sensor rises by a predetermined temperature from the set temperature, the operation valve is closed. By preventing the supply of steam to the heat exchanger by closing the operation valve when the temperature of the hot water detected by the temperature sensor is raised by a predetermined temperature above the set temperature after the hot water is taken out The hot water is prevented from rising above the set temperature.

上記従来の温水生成装置は、温水の取出が停止されて温度センサで検出される温水の温度が設定温度よりも所定温度上昇した場合に、操作弁を閉弁させて蒸気が熱交換器に供給されることを防止するものであるので、操作弁の閉弁が遅く、温水の取出が再開された場合に、設定温度以上の比較的高温の温水が取出されてしまう問題点があった。
特開2002−130821
In the conventional hot water generator, when the hot water is stopped and the temperature of the hot water detected by the temperature sensor rises by a predetermined temperature from the set temperature, the operation valve is closed and the steam is supplied to the heat exchanger. Therefore, when the operation valve is closed slowly and the extraction of warm water is restarted, there is a problem that warm water having a relatively high temperature that is equal to or higher than the set temperature is extracted.
JP 2002-130821 A

解決しようとする課題は、温水の取出が再開された場合に、比較的低温の温水が取出される温水生成装置を提供することである。   The problem to be solved is to provide a warm water generating device from which hot water having a relatively low temperature is taken out when the hot water is taken out again.

本発明の温水生成装置は、熱交換器に蒸気供給管とドレン排出管と冷水取入管並びに温水取出管を接続し、蒸気供給管に操作弁を取り付け、冷水取入管にフロースイッチを設け、温水の取出が停止されてフロースイッチで冷水の流下が検出されなくなった場合に、操作弁を閉弁させるようにしたことを特徴とする。   The hot water generator of the present invention connects a steam supply pipe, a drain discharge pipe, a cold water intake pipe and a hot water discharge pipe to the heat exchanger, attaches an operation valve to the steam supply pipe, and provides a flow switch in the cold water intake pipe. The operation valve is closed when the extraction of the water is stopped and the flow of cold water is no longer detected by the flow switch.

本発明は、温水の取出が停止された場合に、操作弁を早期に閉弁することができるので、温水の取出が再開された場合に、比較的低温の温水を取出すことができるという優れた効果を生じる。   The present invention can close the operation valve at an early stage when the removal of the hot water is stopped, so that it is possible to take out the relatively low temperature hot water when the removal of the hot water is resumed. Produces an effect.

本発明の温水生成装置は、温水の取出が停止されてフロースイッチで冷水の流下が検出されなくなった場合に、操作弁を閉弁させるようにしたものである。そのため、温水の取出が停止された場合に、操作弁を早期に閉弁することができる。そのため、温水の取出が再開された場合に、比較的低温の温水を取出すことができる。   The hot water generator of the present invention is configured to close the operation valve when the hot water is stopped and the flow switch no longer detects the flow of cold water. Therefore, the operation valve can be closed early when the extraction of hot water is stopped. Therefore, when extraction of warm water is restarted, relatively low temperature warm water can be extracted.

上記の技術的手段の具体例を示す実施例を説明する(図1参照)。コルゲートチューブ式熱交換器1に蒸気供給管2、ドレン排出管3、冷水取入管4並びに温水取出管5を接続する。蒸気供給管2に上流側から、開閉弁6、気液分離器7、操作弁としての電動弁8、安全弁9、制御弁10を取り付ける。ドレン排出管3にヘッダータンク11を接続する。ヘッダータンク11は熱交換器1から排出されるドレンを一時的に溜め置くものである。ヘッダータンク11にドレン流入管12を接続し、ドレン流入管12に上流側から逆止弁13、ドレン圧送ポンプ14を取り付ける。逆止弁13はヘッダータンク11からドレン圧送ポンプ14への流体の通過を許容し、反対方向の通過を阻止するものである。   An embodiment showing a specific example of the above technical means will be described (see FIG. 1). A steam supply pipe 2, a drain discharge pipe 3, a cold water intake pipe 4 and a hot water discharge pipe 5 are connected to the corrugated tube heat exchanger 1. An on-off valve 6, a gas-liquid separator 7, an electric valve 8 as an operation valve, a safety valve 9, and a control valve 10 are attached to the steam supply pipe 2 from the upstream side. A header tank 11 is connected to the drain discharge pipe 3. The header tank 11 temporarily stores the drain discharged from the heat exchanger 1. A drain inflow pipe 12 is connected to the header tank 11, and a check valve 13 and a drain pressure feed pump 14 are attached to the drain inflow pipe 12 from the upstream side. The check valve 13 allows passage of fluid from the header tank 11 to the drain pressure feed pump 14 and prevents passage in the opposite direction.

ドレン圧送ポンプ14はドレン流入口15、ドレン圧送口16、蒸気導入口17、蒸気排出口18を有する。ドレン流入口15に逆止弁13を介してドレン流入管12を接続する。ドレン圧送口16にドレン圧送管19を接続し、ドレン圧送管19に上流側から逆止弁20、開閉弁21を取り付ける。逆止弁20はドレン圧送ポンプ14から開閉弁21への流体の通過を許容し、反対方向の通過を阻止するものである。蒸気導入口17に蒸気供給管2から分岐した蒸気導入管22を接続し、蒸気導入管22に上流側から開閉弁23、ストレーナ24、減圧弁25を接続する。蒸気導入管22の減圧弁25の前後に圧力計26と圧力計27を設ける。蒸気導入管22の蒸気導入口17への接続部から分岐するドレン排除管28をドレン圧送管19に接続し、ドレン排除管28に上流側から蒸気トラップ29、逆止弁30を取り付ける。蒸気トラップ29は蒸気を排出することがなくドレンを自動的に下流側の逆止弁30側に排出するものである。逆止弁30は蒸気トラップ29からドレン圧送管19への流体の通過を許容し、反対方向の通過を阻止するものである。蒸気排出口18は下記の初期空気排出管33の排気弁34の上流側に排気管43で接続する。   The drain pressure pump 14 has a drain inlet 15, a drain pressure inlet 16, a steam inlet 17, and a steam outlet 18. A drain inlet pipe 12 is connected to the drain inlet 15 via a check valve 13. A drain pressure feed pipe 19 is connected to the drain pressure feed port 16, and a check valve 20 and an opening / closing valve 21 are attached to the drain pressure feed pipe 19 from the upstream side. The check valve 20 allows passage of fluid from the drain pumping pump 14 to the on-off valve 21 and prevents passage in the opposite direction. A steam introduction pipe 22 branched from the steam supply pipe 2 is connected to the steam introduction port 17, and an opening / closing valve 23, a strainer 24, and a pressure reducing valve 25 are connected to the steam introduction pipe 22 from the upstream side. A pressure gauge 26 and a pressure gauge 27 are provided before and after the pressure reducing valve 25 of the steam introduction pipe 22. A drain evacuation pipe 28 branched from a connection portion of the steam introduction pipe 22 to the steam introduction port 17 is connected to the drain pressure feed pipe 19, and a steam trap 29 and a check valve 30 are attached to the drain evacuation pipe 28 from the upstream side. The steam trap 29 automatically discharges drain to the downstream check valve 30 side without discharging steam. The check valve 30 allows passage of fluid from the steam trap 29 to the drain pressure feed pipe 19 and prevents passage in the opposite direction. The steam discharge port 18 is connected to the upstream side of the exhaust valve 34 of the initial air discharge pipe 33 described below by an exhaust pipe 43.

ドレン圧送ポンプ14は内部に配置した図示しないフロートが下方部に位置する場合に、蒸気導入口17を閉口し蒸気排出口18を開口して、ヘッダータンク11に溜まったドレンを逆止弁13を介してドレン流入口15から内部に流下させる。そして、内部にドレンが溜まって図示しないフロートが所定上方部に位置すると、蒸気排出口18を閉口し、蒸気導入口17を開口して、蒸気導入管22の蒸気を蒸気導入口17から内部に流入させることにより、内部に溜まったドレンをドレン圧送口16からドレン圧送管19を通して所望の圧送先に圧送する。ドレンの圧送により内部の液位が低下すると、再び蒸気導入口17を閉口し蒸気排出口18を開口して、ドレンをドレン流入口15から内部に流下させる。このような作動サイクルを繰り返すことにより、ドレン圧送ポンプ14はヘッダータンク11からのドレンを所望の圧送先に圧送する。   When the float (not shown) disposed inside is located at the lower part, the drain pressure feed pump 14 closes the steam introduction port 17 and opens the steam discharge port 18, and drains accumulated in the header tank 11 through the check valve 13. Through the drain inlet 15. When drain is accumulated inside and a float (not shown) is located at a predetermined upper portion, the steam discharge port 18 is closed, the steam introduction port 17 is opened, and the steam in the steam introduction pipe 22 is brought into the interior from the steam introduction port 17. By letting it flow in, the drain accumulated inside is pumped from the drain pumping port 16 to the desired pumping destination through the drain pumping pipe 19. When the liquid level inside falls due to the pumping of the drain, the steam inlet 17 is closed again, the steam outlet 18 is opened, and the drain flows down from the drain inlet 15 to the inside. By repeating such an operation cycle, the drain pumping pump 14 pumps the drain from the header tank 11 to a desired pumping destination.

気液分離器7のドレン排出口31をドレン排除管28の蒸気トラップ29と逆止弁30との間にドレン排除管32で接続する。ドレン排出管3から分岐する初期空気排出管33をドレン排除管32に接続する。初期空気排出管33に排気弁34と逆止弁35を取り付ける。排気弁34はヘッダータンク11の初期空気を排気するものである。逆止弁35は排気弁34からドレン排除管32への流体の通過を許容し、反対方向の通過を阻止するものである。冷水取入管4にフロースイッチ36を設ける。温水取出管5に温度センサ37を設け、温水利用先に開閉弁38を取り付ける。   A drain discharge port 31 of the gas-liquid separator 7 is connected between a steam trap 29 of the drain removal pipe 28 and the check valve 30 by a drain removal pipe 32. An initial air discharge pipe 33 branched from the drain discharge pipe 3 is connected to the drain exclusion pipe 32. An exhaust valve 34 and a check valve 35 are attached to the initial air discharge pipe 33. The exhaust valve 34 exhausts the initial air of the header tank 11. The check valve 35 allows passage of fluid from the exhaust valve 34 to the drain exclusion pipe 32 and prevents passage in the opposite direction. A flow switch 36 is provided in the cold water intake pipe 4. A temperature sensor 37 is provided in the hot water outlet pipe 5, and an open / close valve 38 is attached to the hot water usage destination.

温水取出管5と冷水取入管4とを循環ポンプ39を有する循環管40で連結する。循環管40の循環ポンプ39の上流側である冷水取入管4の間に電磁弁41を取り付ける。熱交換器1の冷水取入管4側に冷水溜部42を設ける。冷水溜部42は熱交換器1と一体に形成したり熱交換器1とは別体に熱交換器1と冷水取入管4の間に設けたりすることができる。電磁弁41が開き循環ポンプ39が起動すると、循環ポンプ39で強制的に熱交換器1の温水を冷却溜部42、冷水取入管4、循環管40及び温水取出管5を介して熱交換器1に循環させる。   The hot water extraction pipe 5 and the cold water intake pipe 4 are connected by a circulation pipe 40 having a circulation pump 39. An electromagnetic valve 41 is attached between the cold water intake pipe 4 on the upstream side of the circulation pump 39 of the circulation pipe 40. A cold water reservoir 42 is provided on the cold water intake pipe 4 side of the heat exchanger 1. The cold water reservoir 42 can be formed integrally with the heat exchanger 1 or provided between the heat exchanger 1 and the cold water intake pipe 4 separately from the heat exchanger 1. When the electromagnetic valve 41 is opened and the circulation pump 39 is activated, the circulation pump 39 forces the hot water of the heat exchanger 1 through the cooling reservoir 42, the cold water intake pipe 4, the circulation pipe 40 and the hot water extraction pipe 5. Cycle to 1.

制御弁10は温度センサ37で検出される温水の温度が設定温度よりも上昇すると開度が小さくされ設定温度よりも低下すると開度が大きくされる。操作弁としての電動弁8は制御弁10の制御範囲以下により或いは制御弁10の故障により、温度センサ37で検出される温水の温度が設定温度よりも所定温度上昇すると閉じられる。また、操作弁としての電動弁8は温水の取出が停止されてフロースイッチ36で冷水の流下が検出されなくなった場合に或いはフロースイッチ36の故障により温度センサ37で検出される温水の温度が設定温度よりも所定温度上昇した場合に閉じられる。電磁弁41及び循環ポンプ39は温水の取出が停止されてフロースイッチ36で冷水の流下が検出されなくなった場合に或いはフロースイッチ36の故障により温度センサ37で検出される温水の温度が設定温度よりも所定温度上昇した場合に開かれると共に起動される。これにより、循環ポンプ39で強制的に熱交換器1の温水を冷却溜部42、冷水取入管4、循環管40及び温水取出管5を介して熱交換器1に循環させて、温水が熱交換器1内に滞留することを防止して、熱交換器1内に残存する蒸気で温水が設定温度以上に昇温することを抑制する。温水の取出が停止されてフロースイッチ36で冷水の流下が検出されなくなった場合に、操作弁としての電動弁8を閉弁することにより、電動弁8を早期に閉弁することができ、温水の取出が再開された場合に、比較的低温の温水を取出すことができる。また、循環する温水の温度を冷水溜部42で低下させることにより、温水が設定温度以上に昇温することを抑制する能力を高めることができる。また、温水の取出が再開された場合に、循環管40から温水取出管5に向けて循環する比較的低温の温水を優先的に取出すことができる。   The opening of the control valve 10 is reduced when the temperature of the hot water detected by the temperature sensor 37 is higher than the set temperature, and is increased when the temperature is lower than the set temperature. The motor-operated valve 8 as the operation valve is closed when the temperature of the hot water detected by the temperature sensor 37 rises by a predetermined temperature below the set temperature due to the control range of the control valve 10 or less or due to a failure of the control valve 10. The motor-operated valve 8 as the operation valve is set to the temperature of the hot water detected by the temperature sensor 37 when the flow of the cold water is not detected by the flow switch 36 or when the flow switch 36 is not detected. It is closed when a predetermined temperature rises above the temperature. The temperature of the hot water detected by the temperature sensor 37 is higher than the set temperature when the solenoid valve 41 and the circulation pump 39 stop taking out the hot water and the flow switch 36 no longer detects the flow of cold water. Is also opened when the temperature rises to a predetermined temperature. Thereby, the hot water of the heat exchanger 1 is forcibly circulated to the heat exchanger 1 through the cooling reservoir 42, the cold water intake pipe 4, the circulation pipe 40 and the hot water discharge pipe 5 by the circulation pump 39, and the hot water is heated. It prevents that it stays in the exchanger 1, and suppresses that warm water raises temperature more than preset temperature with the steam which remains in the heat exchanger 1. FIG. When the removal of the hot water is stopped and the flow of cold water is no longer detected by the flow switch 36, the motor-operated valve 8 can be closed early by closing the motor-operated valve 8 as the operation valve. When the extraction of the water is resumed, the relatively low temperature hot water can be extracted. Moreover, the capability to suppress that warm water raises temperature more than preset temperature can be improved by lowering | hanging the temperature of the warm water by the cold water storage part 42. FIG. Moreover, when extraction of warm water is restarted, relatively low-temperature warm water circulating from the circulation pipe 40 toward the warm water extraction pipe 5 can be preferentially taken out.

上記の実施例では、循環ポンプ39で強制的に熱交換器1の温水を冷却溜部42、冷水取入管4、循環管40及び温水取出管5を介して熱交換器1に循環させた。これに代えて、循環管40の循環ポンプ39の上流側である温水取出管5の間に電磁弁41を取り付け、電磁弁41が開き循環ポンプ39が起動すると、循環ポンプ39で強制的に熱交換器1の温水を温水取出管5、循環管40、冷水取入管4及び冷却溜部42を介して熱交換器1に循環させてもよい。   In the above embodiment, the hot water of the heat exchanger 1 is forcibly circulated to the heat exchanger 1 through the cooling reservoir 42, the cold water intake pipe 4, the circulation pipe 40 and the hot water discharge pipe 5 by the circulation pump 39. Instead, when the solenoid valve 41 is attached between the hot water extraction pipe 5 on the upstream side of the circulation pump 39 of the circulation pipe 40 and the solenoid valve 41 is opened and the circulation pump 39 is started, the circulation pump 39 forcibly heats up. The hot water in the exchanger 1 may be circulated to the heat exchanger 1 through the hot water take-out pipe 5, the circulation pipe 40, the cold water intake pipe 4 and the cooling reservoir 42.

本発明の温水生成装置の実施例を示す構成図。The block diagram which shows the Example of the warm water production | generation apparatus of this invention.

符号の説明Explanation of symbols

1 コルゲートチューブ式熱交換器
2 蒸気供給管
3 ドレン排出管
4 冷水取入管
5 温水取出管
6 開閉弁
7 気液分離器
8 操作弁としての電動弁
9 安全弁
10 制御弁
11 ヘッダータンク
12 ドレン流入管
13 逆止弁
14 ドレン圧送ポンプ
15 ドレン流入口
16 ドレン圧送口
17 蒸気導入口
18 蒸気排出口
19 ドレン圧送管
20 逆止弁
21 開閉弁
22 蒸気導入管
23 開閉弁
24 ストレーナ
25 減圧弁
26 圧力計
27 圧力計
28 ドレン排除管
29 蒸気トラップ
30 逆止弁
31 ドレン排出口
32 ドレン排除管
33 初期空気排出管
34 排気弁
35 逆止弁
36 フロースイッチ
37 温度センサ
38 開閉弁
39 循環ポンプ
40 循環管
41 電磁弁
42 冷水溜部
43 排気管
DESCRIPTION OF SYMBOLS 1 Corrugated tube type heat exchanger 2 Steam supply pipe 3 Drain discharge pipe 4 Cold water intake pipe 5 Hot water extraction pipe 6 On-off valve 7 Gas-liquid separator 8 Motor operated valve 9 Safety valve 10 Control valve 11 Header tank 12 Drain inflow pipe 13 Check valve 14 Drain pressure feed pump 15 Drain inlet 16 Drain pressure feed port 17 Steam introduction port 18 Steam discharge port 19 Drain pressure feed tube 20 Check valve 21 Opening valve 22 Steam introduction tube 23 Opening valve 24 Strainer 25 Pressure reducing valve 26 Pressure gauge 27 Pressure Gauge 28 Drain Exhaust Pipe 29 Steam Trap 30 Check Valve 31 Drain Exhaust Port 32 Drain Exhaust Pipe 33 Initial Air Discharge Pipe 34 Exhaust Valve 35 Check Valve 36 Flow Switch 37 Temperature Sensor 38 On-off Valve 39 Circulation Pump 40 Circulation Pipe 41 Solenoid valve 42 Cold water reservoir 43 Exhaust pipe

Claims (1)

熱交換器に蒸気供給管とドレン排出管と冷水取入管並びに温水取出管を接続し、蒸気供給管に操作弁を取り付け、冷水取入管にフロースイッチを設け、温水の取出が停止されてフロースイッチで冷水の流下が検出されなくなった場合に、操作弁を閉弁させるようにしたことを特徴とする温水生成装置。
Connect the steam supply pipe, drain discharge pipe, cold water intake pipe and hot water intake pipe to the heat exchanger, attach the operation valve to the steam supply pipe, install the flow switch in the cold water intake pipe, and stop the hot water extraction. The hot water generator is characterized in that the operation valve is closed when the flow of cold water is no longer detected.
JP2008185422A 2008-07-16 2008-07-16 Hot water generating device Pending JP2010025394A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013176269A1 (en) 2012-05-25 2013-11-28 株式会社テイエルブイ Hot water generator
JP2014037965A (en) * 2012-05-25 2014-02-27 Tlv Co Ltd Hot water generating device
JP2014074502A (en) * 2012-10-02 2014-04-24 Tlv Co Ltd Hot water generating device
JP2017156071A (en) * 2016-03-04 2017-09-07 高砂熱学工業株式会社 Water to steam heat exchange system and its operational method

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JPH0358691U (en) * 1989-10-14 1991-06-07
JPH0763411A (en) * 1993-08-30 1995-03-10 Yunisun:Kk Hot water manufacturing device
JP2001311550A (en) * 2000-04-28 2001-11-09 Harman Co Ltd Bath hot water supplying device
JP2002130821A (en) * 2000-10-25 2002-05-09 Spirax Sarco Ltd Hot water generator
JP2003074973A (en) * 2001-08-29 2003-03-12 Nippon Reonaado Shokai:Kk Clean water heater and clean steam supply unit
JP2003120999A (en) * 2001-10-15 2003-04-23 Naomoto Kogyo Kk Water heater
JP2007333327A (en) * 2006-06-16 2007-12-27 Miyawaki Inc Heating system

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JPH0358691U (en) * 1989-10-14 1991-06-07
JPH0763411A (en) * 1993-08-30 1995-03-10 Yunisun:Kk Hot water manufacturing device
JP2001311550A (en) * 2000-04-28 2001-11-09 Harman Co Ltd Bath hot water supplying device
JP2002130821A (en) * 2000-10-25 2002-05-09 Spirax Sarco Ltd Hot water generator
JP2003074973A (en) * 2001-08-29 2003-03-12 Nippon Reonaado Shokai:Kk Clean water heater and clean steam supply unit
JP2003120999A (en) * 2001-10-15 2003-04-23 Naomoto Kogyo Kk Water heater
JP2007333327A (en) * 2006-06-16 2007-12-27 Miyawaki Inc Heating system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013176269A1 (en) 2012-05-25 2013-11-28 株式会社テイエルブイ Hot water generator
JP2014037965A (en) * 2012-05-25 2014-02-27 Tlv Co Ltd Hot water generating device
KR20150016542A (en) 2012-05-25 2015-02-12 가부시키가이샤 티엘브이 Hot water generator
EP2857774A4 (en) * 2012-05-25 2016-03-23 Tlv Co Ltd Hot water generator
US9897342B2 (en) 2012-05-25 2018-02-20 Tlv Co., Ltd. Hot water generator
KR102055643B1 (en) * 2012-05-25 2019-12-13 가부시키가이샤 티엘브이 Hot water generator
JP2014074502A (en) * 2012-10-02 2014-04-24 Tlv Co Ltd Hot water generating device
JP2017156071A (en) * 2016-03-04 2017-09-07 高砂熱学工業株式会社 Water to steam heat exchange system and its operational method

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