JPH029309Y2 - - Google Patents
Info
- Publication number
- JPH029309Y2 JPH029309Y2 JP1985065840U JP6584085U JPH029309Y2 JP H029309 Y2 JPH029309 Y2 JP H029309Y2 JP 1985065840 U JP1985065840 U JP 1985065840U JP 6584085 U JP6584085 U JP 6584085U JP H029309 Y2 JPH029309 Y2 JP H029309Y2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- heating
- water supply
- heating device
- circulation system
- 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 155
- 238000010438 heat treatment Methods 0.000 claims description 85
- 239000007788 liquid Substances 0.000 claims description 26
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003303 reheating Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、出湯栓の開き操作に連係して加熱作
動することにより給湯用温水を給湯路を介して前
記出湯栓に供給する給湯用加熱装置と、循環ポン
プを介装した暖房用熱媒液循環系の循環熱媒液を
加熱する暖房用加熱装置とを備えた給湯・暖房装
置に関する。[Detailed description of the invention] [Industrial application field] The present invention is a heating system for hot water supply that supplies hot water for hot water supply to the hot water tap through a hot water supply path by heating in conjunction with the opening operation of the hot water tap. The present invention relates to a hot water supply/heating device including a heating device and a heating device for heating a circulating heat medium liquid in a heating heat medium liquid circulation system in which a circulation pump is interposed.
従来、上記の如き給湯・暖房装置においては、
給湯用加熱装置と暖房用加熱装置とを給湯運転と
暖房運転とに対して全く各別に夫々専用機能させ
るように構成していた（文献を示すことができな
い）。
Conventionally, in the above hot water supply/heating equipment,
The heating device for hot water supply and the heating device for space heating were configured to have completely separate dedicated functions for hot water supply operation and heating operation, respectively (I cannot provide references).
しかし、給湯運転は夏場及び冬場を通じて一年
中行われるものの暖房運転は主に冬場しか行われ
ず、夏場においては暖房用加熱装置並びに暖房用
循環ポンプが長期にわたつて休止状態となるため
に、その休止期間中において暖房用循環ポンプの
ポンプロツクを招き易く、そのポンプロツクが暖
房運転再開の支障となる問題があつた。
However, although hot water supply operation is carried out all year round in summer and winter, heating operation is mainly carried out only in winter. During this period, the heating circulation pump was likely to become locked, which caused a problem in that the pump lock became a hindrance to resuming heating operation.
本考案の目的は、合理的な改良により、即時給
湯性の向上を図りながら、長期休止に起因した暖
房用循環ポンプのポンプロツクを回避する点にあ
る。 The purpose of the present invention is to avoid pump lock of the heating circulation pump due to long-term suspension while improving instant hot water supply performance through rational improvements.
〔問題点を解決するための手段〕
本考案による給湯・暖房装置の特徴構成は、給
湯用加熱装置と出湯栓とを接続する給湯路の出湯
栓近くから給湯用温水を前記給湯用加熱装置に戻
す戻り路を設け、前記給湯路と前記戻り路とにわ
たる給湯用温水循環系において温水を循環させる
循環ポンプを設け、暖房用加熱装置により加熱さ
れて暖房用熱媒液循環系を循環する熱媒液と、前
記給湯用温水循環系における温水とを熱交換させ
ることにより給湯用温水循環系の温水を加熱する
熱交換器を設け、前記給湯用温水循環系における
温水温度を検出するセンサーを設け、そのセンサ
ーからの情報に基づいて、検出湯温が設定以下で
あれば前記暖房用熱媒液循環系に対する循環ポン
プ、前記給湯用循環ポンプ、並びに、前記暖房用
加熱装置を自動的に作動させ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。[Means for Solving the Problems] The characteristic configuration of the hot water supply/heating device according to the present invention is that hot water for hot water supply is supplied to the hot water heating device from near the hot water tap of the hot water supply path that connects the hot water heating device and the hot water tap. A return path is provided, and a circulation pump is provided to circulate hot water in a hot water circulation system for hot water supply that extends between the hot water supply path and the return path, and a heat medium that is heated by a heating device for heating and circulates in a heat medium liquid circulation system for heating. A heat exchanger is provided to heat the hot water in the hot water circulation system for hot water supply by exchanging heat between the liquid and the hot water in the hot water circulation system for hot water supply, and a sensor is provided for detecting the hot water temperature in the hot water circulation system for hot water supply, Based on the information from the sensor, if the detected hot water temperature is below the setting, control automatically operates the circulation pump for the heating heat medium liquid circulation system, the hot water supply circulation pump, and the heating heating device. The purpose is to provide a means, and its functions and effects are as follows.
つまり、出湯栓閉じ状態において、給湯用温水
循環系における温水温度が放熱冷却により設定温
度以下となればその給湯用温水循環系における温
水を自動的に再加熱すると共に循環させ、それに
よつて、給湯用温水循環系における温水を常時高
温状態に維持しておくことで、出湯栓閉じ時にお
ける放熱冷却にかかわらず出湯栓の開き操作直後
から高温水を吐出できるようにするのであるが、
給湯用温水循環系における温水の再加熱を暖房用
熱媒液循環系を循環する熱媒液との熱交換で行う
ようにし、その熱交換による再佳熱にあたつて暖
房用加熱装置及び暖房用循環ポンプを暖房運転状
態であるか否かにかかわらず作動させるから、夏
場においても暖房用循環ポンプを作動させること
になり、それによつて、長期運転休止に起因した
暖房用循環ポンプのポンプロツクを回避できる。
In other words, when the hot water tap is closed, if the temperature of hot water in the hot water circulation system for hot water supply falls below the set temperature due to radiation cooling, the hot water in the hot water circulation system for hot water supply is automatically reheated and circulated. By constantly maintaining the hot water in the hot water circulation system at a high temperature, high-temperature water can be discharged immediately after the hot water tap is opened, regardless of the heat dissipation cooling when the hot water tap is closed.
The reheating of hot water in the hot water circulation system for hot water supply is performed by heat exchange with the heat medium liquid circulating in the heat medium liquid circulation system for heating, and for reheating by the heat exchange, the heating device for heating and heating Since the heating circulation pump is operated regardless of whether it is in heating mode or not, the heating circulation pump is operated even in the summer. It can be avoided.
上述の結果、出湯栓を開いた後、しばらくの
間、冷たい温水が吐出されるといつた使用勝手上
の不都合が無く即時給湯性に優れ、しかも、夏場
における長期の暖房運転休止にかかわらず暖房用
循環ポンプのポンプロツクが無いことから次期の
暖房運転再開を円滑かつ簡便に行える取扱い性に
優れた給湯・暖房装置にできた。
As a result of the above, there is no inconvenience in terms of usability such as cold hot water being discharged for a while after opening the hot water tap, and the hot water supply is excellent in instant hot water supply.Moreover, even if the heating operation is stopped for a long time in the summer, heating is possible. Since there is no pump lock on the circulation pump, we have created a hot water/heating device that is easy to handle and can smoothly and easily resume heating operation next time.
次に本考案の実施例を説明する。 Next, an embodiment of the present invention will be described.
第１図は給湯・暖房装置の概略構成を示し、装
置本体ユニツト１に給湯用加熱装置２、及び、暖
房用加熱装置３を内装すると共に、給湯運転並び
に暖房運転を制御する制御装置４を装備してあ
る。 Fig. 1 shows a schematic configuration of a hot water supply/heating system, in which a main body unit 1 is equipped with a heating device 2 for hot water supply and a heating device 3 for space heating, as well as a control device 4 for controlling hot water supply operation and heating operation. It has been done.
給湯用加熱装置２には、給水路５に接続した水
管型の第１熱交換器６と、それに対する加熱用の
第１バーナ７とを装備してあり、給水路５から供
給される水を第１熱交換器６で加熱し、その加熱
温水を給湯路８を介して出湯栓９に供給するよう
に構成してある。 The hot water heating device 2 is equipped with a water tube type first heat exchanger 6 connected to the water supply channel 5 and a first burner 7 for heating the heat exchanger 6, and the water supplied from the water supply channel 5 is heated. The hot water is heated by a first heat exchanger 6 and the heated hot water is supplied to a tap 9 via a hot water supply path 8.
そして、給水路５において供給水の流動を検出
するセンサー１０を設けると共に、そのセンサー
１０からの情報に基づいて、第１熱交換器６に対
する給水状態で第１バーナ７を燃焼作動させ、か
つ、給水停止状態で第１バーナ７の燃焼作動を停
止させるように第１バーナ７を自動操作する給湯
制御回路４Ａを前記制御装置４に組み込み、もつ
て、給水断続操作、すなわち、出湯栓９の開閉操
作に連係して給湯用加熱装置２を自動発停するよ
うに構成してある。 A sensor 10 for detecting the flow of supply water is provided in the water supply channel 5, and based on the information from the sensor 10, the first burner 7 is operated for combustion while the water is being supplied to the first heat exchanger 6, and A hot water supply control circuit 4A that automatically operates the first burner 7 so as to stop the combustion operation of the first burner 7 when the water supply is stopped is incorporated into the control device 4, and then the water supply intermittent operation, that is, opening and closing of the hot water tap 9 is performed. The hot water heating device 2 is configured to automatically start and stop in conjunction with the operation.
一方、暖房用加熱装置３には、暖房用熱媒液循
環系１１に介装した液管型の第２熱交換器１２
と、それに対する加熱用の第２バーナ１３とを装
備してあり、暖房用熱媒液循環系１１を循環する
熱媒液を第２熱交換器１２通過に伴い加熱するよ
うに構成してある。 On the other hand, the heating device 3 for heating includes a liquid pipe type second heat exchanger 12 interposed in the heat medium liquid circulation system 11 for heating.
and a second burner 13 for heating it, and is configured to heat the heat medium liquid circulating in the heating heat medium liquid circulation system 11 as it passes through the second heat exchanger 12. .
暖房用熱媒液循環系１１には、暖房用放熱器１
４、及び、暖房用熱媒液循環ポンプ１５を介装し
てある。 The heating heat medium liquid circulation system 11 includes a heating radiator 1.
4, and a heating medium liquid circulation pump 15 are interposed.
又、図示しないが、制御装置４には、第１熱交
換器６からの出湯温度検出に基づいて、その検出
出湯温度を設定温度に維持するように第１バーナ
７を能力制御する回路、並びに、第２熱交換器１
２から送り出す熱媒液の温度検出に基づいて、そ
の検出熱媒液温度を設定温度に維持するように第
２バーナ１３を能力制御する回路を組み込み装備
してある。 Although not shown, the control device 4 includes a circuit that controls the capacity of the first burner 7 based on the detected hot water temperature detected from the first heat exchanger 6 so as to maintain the detected hot water temperature at a set temperature; , second heat exchanger 1
The second burner 13 is equipped with a built-in circuit that controls the capacity of the second burner 13 based on the detected temperature of the heat medium liquid sent out from the second burner 13 so as to maintain the detected temperature of the heat medium liquid at a set temperature.
給湯用温水を給湯路８の出湯栓９近くから第１
熱交換器６の入水部へ戻す戻り路１６を設け、給
湯路８と戻り路１６とにわたる給湯用温水循環系
８，１６を構成すると共に、その給湯用温水循環
系８，１６に、給湯用温水循環ポンプ１７、及
び、給湯用温水循環系保有水量の約1/2の貯水量
を有するストレージタンク１８を介装してある。 The hot water for hot water supply is supplied from the hot water supply path 8 near the hot water tap 9 to the first
A return path 16 is provided to return to the water inlet of the heat exchanger 6, and a hot water circulation system 8, 16 for hot water supply extending between the hot water supply path 8 and the return path 16 is provided. A hot water circulation pump 17 and a storage tank 18 having a storage capacity of about 1/2 of the water capacity of the hot water circulation system for hot water supply are interposed.
そして、ストレージタンク１８内の貯留温水と
暖房用熱媒液循環系１１を循環する高温熱媒液と
を熱交換させてストレージタンク内貯留温水を加
熱する第２熱交換器１９をストレージタンク１８
に内装すると共に、ストレージタンク内の貯留温
水温度を検出するセンサー２０を設け、更に、そ
のセンサー２０からの情報に基づいて第２図に示
す如き制御を実行する回路４Ｂを前記制御装置４
に組み込んである。 The second heat exchanger 19 heats the stored hot water in the storage tank by exchanging heat between the hot water stored in the storage tank 18 and the high temperature heat medium liquid circulating in the heating heat medium liquid circulation system 11.
The controller 4 is also equipped with a sensor 20 for detecting the temperature of stored hot water in the storage tank, and further includes a circuit 4B for executing control as shown in FIG. 2 based on information from the sensor 20.
It is incorporated into.
つまり、出湯栓９閉じ状態において給湯用温水
循環系８，１６（ストレージタンク１８を含む）
内の給湯用温水が自然放熱冷却してセンサー２０
による検出温度ｔが設定下限tnio未満となれば暖
房用加熱装置３の第２バーナ１３を燃焼作動させ
ると共に暖房用循環ポンプ１５を作動させ、第３
熱交換器１９での熱交換によりストレージタンク
１８内の貯留温水を再加熱する。 In other words, when the hot water tap 9 is closed, the hot water circulation system 8, 16 (including the storage tank 18) for hot water supply
The hot water for hot water supply inside the sensor 20 is cooled by natural heat radiation.
If the temperature t detected by
The hot water stored in the storage tank 18 is reheated by heat exchange in the heat exchanger 19.
そして、その加熱によりセンサー検出湯温ｔが
設定上限tnax以上となつた時点から給湯用循環ポ
ンプ１７を、その吐出量がストレージタンク容量
に等しくなるまで作動させてストレージタンク１
８内の再加熱温水を給湯用温水循環系８，１６の
給湯路８部分に送出する。 Then, from the time when the sensor-detected hot water temperature t becomes equal to or higher than the set upper limit t nax due to the heating, the hot water supply circulation pump 17 is operated until the discharge amount becomes equal to the storage tank capacity.
The reheated hot water in 8 is sent to the hot water supply path 8 portion of the hot water circulation system 8, 16 for hot water supply.
給湯用循環ポンプ１７の作動完了後、センサー
検出湯温ｔが設定下限tnio以上であれば暖房用加
熱装置３、及び、暖房用循環ポンプ１５を停止さ
せるが、設定下限tnio未満であればセンサー検出
湯温ｔが設定上限tnaxに達するまで暖房用加熱装
置３、及び、暖房用循環ポンプ１５の作動を維持
させる。 After the operation of the hot water circulation pump 17 is completed, if the sensor detected hot water temperature t is equal to or higher than the set lower limit t nio, the heating device 3 and the heating circulation pump 15 are stopped; however, if it is lower than the set lower limit t nio. The operation of the heating device 3 for heating and the circulation pump 15 for heating is maintained until the sensor-detected hot water temperature t reaches the set upper limit t nax .
以上要するに、上述の如き制御により給湯用温
水循環系８，１６内の温水、特に給湯路８内の温
水を常時高温状態に維持し、それによつて、出湯
栓９閉じ時における放熱冷却にかかわらず出湯栓
９開き操作直後から高温水を出湯できるようにし
てある。 In short, by controlling as described above, the hot water in the hot water circulation systems 8 and 16, especially the hot water in the hot water supply path 8, is always maintained at a high temperature, regardless of the heat dissipation cooling when the hot water tap 9 is closed. High temperature water can be dispensed immediately after opening the tap 9.
尚、図中２１は、第２熱交換器１２で加熱され
た熱媒液を放熱器１４側と第３熱交換器１９側と
に分配供給する三方弁であり、夏場等においては
暖房用熱媒液を給湯用温水の再加熱にのみ用いる
ように三方弁２１を切換えておく。 In addition, 21 in the figure is a three-way valve that distributes and supplies the heat medium liquid heated by the second heat exchanger 12 to the radiator 14 side and the third heat exchanger 19 side. The three-way valve 21 is switched so that the medium is used only for reheating hot water for hot water supply.
次に本考案の別実施例を説明する。 Next, another embodiment of the present invention will be described.
ストレージタンク１８を装置本体ユニツト１か
ら分離した状態に設けても良く、又、ストレージ
タンク１８を省略し、給湯用温水循環系８，１６
の給湯用温水を、循環流動させながら第３熱交換
器１９で暖房用熱媒液と熱交換させて加熱するよ
うにしても良い。 The storage tank 18 may be provided separately from the device main unit 1, or the storage tank 18 may be omitted and the hot water circulation system 8, 16 for hot water supply may be provided.
The hot water for hot water supply may be heated by being circulated and exchanged with the heating medium liquid in the third heat exchanger 19.
給湯用温水循環系８，１６に対する第３熱交換
器１９、並びに、湯温センサー２０の付設位置は
適宜改良が可能である。 The positions of the third heat exchanger 19 and the hot water temperature sensor 20 relative to the hot water circulation systems 8 and 16 for hot water supply can be modified as appropriate.
湯温センサー２０からの情報に基づいて暖房用
加熱装置３、暖房用循環ポンプ１５、並びに、給
湯用循環ポンプ１７の三者を発停制御するに、単
に、センサー検出湯温ｔが設定以下の時に三者
３，１５，１７を同時に作動させ、センサー検出
湯温ｔが設定を超えた時に三者３，１５，１７を
同時に停止させるようにしても良く、具体的制御
フローの細部は種々の改良が可能である。 In order to control the heating device 3 for heating, the circulation pump 15 for heating, and the circulation pump 17 for hot water supply based on the information from the hot water temperature sensor 20, it is necessary to simply set the sensor-detected hot water temperature t below the setting. Sometimes, the three parts 3, 15, and 17 may be operated simultaneously, and when the sensor-detected hot water temperature t exceeds the setting, the three parts 3, 15, and 17 may be stopped at the same time, and the details of the specific control flow may vary. Improvements are possible.
湯温センサー２０からの情報に基づいて上述の
三者３，１５，１７を発停制御する具体的制御回
路構成もマイコンを適用したり、シーケンス回路
で構成する等、種々の構成変更が可能である。 The specific control circuit configuration for controlling the above-mentioned three, 15, and 17 on/off based on the information from the hot water temperature sensor 20 can be changed in various ways, such as by applying a microcomputer or configuring it with a sequence circuit. be.
暖房用熱媒液としては、水はもとより種々の液
剤を適用できる。 As the heating heat medium liquid, not only water but also various liquid agents can be used.
給湯用加熱装置２、及び、暖房用加熱装置３
は、燃焼加熱式の他に電気加熱式で構成しても良
い。 Hot water heating device 2 and space heating device 3
In addition to the combustion heating type, the heating type may be an electric heating type.
第１図及び第２図は本考案の実施例を示し、第
１図は全体概略構成図、第２図はフローシートで
ある。
２……給湯用加熱装置、３……暖房用加熱装
置、４Ｂ……制御手段、８……給湯路、９……出
湯栓、１１……暖房用熱媒液循環系、１５，１７
……循環ポンプ、１６……戻り路、１９……熱交
換器、２０……センサー。
1 and 2 show an embodiment of the present invention, with FIG. 1 being a general schematic diagram and FIG. 2 being a flow sheet. 2... Heating device for hot water supply, 3... Heating device for heating, 4B... Control means, 8... Hot water supply path, 9... Hot water tap, 11... Heat medium liquid circulation system for heating, 15, 17
... Circulation pump, 16 ... Return path, 19 ... Heat exchanger, 20 ... Sensor.
Claims (1)
とにより給湯用温水を給湯路８を介して前記出湯
栓９に供給する給湯用加熱装置２と、循環ポンプ
１５を介装した暖房用熱媒液循環系１１の循環熱
媒液を加熱する暖房用加熱装置３とを備えた給
湯・暖房装置であつて、給湯用温水を前記給湯路
８の前記出湯栓９近くから前記給湯用加熱装置２
に戻す戻り路１６を設け、前記給湯路８と前記戻
り路１６とにわたる給湯用温水循環系８，１６に
おいて温水を循環させる循環ポンプ１７を設け、
前記給湯用温水循環系８，１６における給湯用温
水を前記暖房用熱媒液循環系１１を循環する熱媒
液と熱交換させて加熱する熱交換器１９を設け、
前記給湯用温水循環系８，１６における温水温度
を検出するセンサー２０を設け、そのセンサー２
０からの情報に基づいて、検出湯温が設定以下で
あれば前記給湯用循環ポンプ１７、前記暖房用循
環ポンプ１５、並びに、前記暖房用加熱装置３を
自動的に作動させる制御手段４Ｂを設けた給湯・
暖房装置。 A heating device 2 for hot water supply that supplies hot water for hot water supply to the hot water tap 9 via a hot water supply path 8 by heating in conjunction with the opening operation of the hot water tap 9, and a heating heat medium for heating in which a circulation pump 15 is interposed. The hot water supply/heating device includes a heating device 3 for heating the circulating heat medium liquid of the liquid circulation system 11, and the hot water for hot water supply is supplied from near the tap 9 of the hot water supply path 8 to the heating device 2 for hot water supply.
A return path 16 is provided for returning the hot water to the hot water supply path 8, and a circulation pump 17 is provided for circulating hot water in the hot water circulation system 8, 16 extending between the hot water supply path 8 and the return path 16.
A heat exchanger 19 is provided that heats the hot water for hot water supply in the hot water circulation systems 8 and 16 by exchanging heat with the heat medium liquid circulating in the heating heat medium liquid circulation system 11,
A sensor 20 is provided for detecting the hot water temperature in the hot water circulation system 8, 16 for hot water supply.
A control means 4B is provided which automatically operates the hot water supply circulation pump 17, the heating circulation pump 15, and the heating heating device 3 if the detected hot water temperature is below a setting based on information from 0. Hot water supply/
Heating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985065840U JPH029309Y2 (en) | 1985-05-01 | 1985-05-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985065840U JPH029309Y2 (en) | 1985-05-01 | 1985-05-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61181207U JPS61181207U (en) | 1986-11-12 |
| JPH029309Y2 true JPH029309Y2 (en) | 1990-03-07 |
Family
ID=30598190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985065840U Expired JPH029309Y2 (en) | 1985-05-01 | 1985-05-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH029309Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2582069B2 (en) * | 1987-04-16 | 1997-02-19 | 大阪瓦斯株式会社 | Hot water heater |
| JP4602062B2 (en) * | 2004-07-22 | 2010-12-22 | パナソニック株式会社 | Water heater |
| JP4624091B2 (en) * | 2004-07-22 | 2011-02-02 | パナソニック株式会社 | Water heater |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5625626A (en) * | 1979-08-09 | 1981-03-12 | Matsushita Electric Ind Co Ltd | Control device for hot water supplying type room heater |
-
1985
- 1985-05-01 JP JP1985065840U patent/JPH029309Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5625626A (en) * | 1979-08-09 | 1981-03-12 | Matsushita Electric Ind Co Ltd | Control device for hot water supplying type room heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61181207U (en) | 1986-11-12 |
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