JPH0849865A - Indoor unit for hot water heater - Google Patents
Indoor unit for hot water heaterInfo
- Publication number
- JPH0849865A JPH0849865A JP18563894A JP18563894A JPH0849865A JP H0849865 A JPH0849865 A JP H0849865A JP 18563894 A JP18563894 A JP 18563894A JP 18563894 A JP18563894 A JP 18563894A JP H0849865 A JPH0849865 A JP H0849865A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- heat exchanger
- temperature
- indoor unit
- switching means
- 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.)
- Pending
Links
Landscapes
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明はファンコンベクタと呼ば
れる温水暖房機の室内機の構成ならびに運転制御に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the construction and operation control of an indoor unit of a hot water heater called a fan convector.
【0002】[0002]
【従来の技術】温水暖房機には例えば図6に示すような
ファンコンベクタと呼ばれる室内機31と、油だき温水ボ
イラと呼ばれ、前記室内機31の熱源機として利用される
室外機32とからなるものがある。室内機31にはその筐体
33の後方上部に室内空気の吸込口34が有り、前方下部に
室内への温風の吹出口35が有り、内部には室外機32から
の温水を熱源とする熱交換器36と、この熱交換器36で暖
められた空気を室内へ送出する送風機37と、同送風機37
を制御する制御部38と、熱交換器36から室外機32に戻る
温水の温度を検出する温度センサ39が有り、筐体33の前
面上部には運転操作部40が、また、背面下部には室内温
度を検出する温度センサ41が設けられている。一方の室
外機32側には温水を生成するボイラ42と、温水を蓄える
シスタンク43と、温水を室内機31へ循環させるポンプ44
と、ボイラ42およびポンプ44等を制御する室外機制御部
45が有り、この室外機制御部45と室内機31側の制御部38
とは信号線46で結ばれ、また、室外機32と室内機31間は
温水の往き管47と戻り管48で繋がれている。なお、往き
管47および戻り管48はそれぞれ室内側の壁面49に設けら
れた温水コンセント50で中継されている。2. Description of the Related Art A hot water heater includes, for example, an indoor unit 31 called a fan convector as shown in FIG. 6 and an outdoor unit 32 called an oil-fired hot water boiler and used as a heat source unit of the indoor unit 31. There is something. The indoor unit 31 has its housing
The indoor air suction port 34 is located in the upper rear part of the 33, the hot air outlet 35 to the room is located in the lower front part, the heat exchanger 36 using the hot water from the outdoor unit 32 as a heat source, and this heat The blower 37 that sends the air warmed by the exchanger 36 to the room, and the blower 37
There is a control unit 38 for controlling the temperature of the housing 33, and a temperature sensor 39 for detecting the temperature of the hot water returning from the heat exchanger 36 to the outdoor unit 32. A temperature sensor 41 for detecting the room temperature is provided. A boiler 42 that generates hot water, a cis tank 43 that stores hot water, and a pump 44 that circulates the hot water to the indoor unit 31 are provided on the outdoor unit 32 side.
And an outdoor unit controller that controls the boiler 42, the pump 44, and the like.
There is a 45, and the outdoor unit control unit 45 and the control unit 38 on the indoor unit 31 side
Is connected by a signal line 46, and the outdoor unit 32 and the indoor unit 31 are connected by a hot water outflow pipe 47 and a return pipe 48. The outgoing pipe 47 and the return pipe 48 are relayed by hot water outlets 50 provided on a wall surface 49 on the indoor side.
【0003】[0003]
【発明が解決しようとする課題】ところで、上述の往き
管47と戻り管48には同じ径のものが使用されるため図7
の(A)に示すような正常な配管工事が行われるとは限
らず、(B),(C),(D)に示すような接続が行わ
れる可能性がある。(B)は室外機32と温水コンセント
50間および同温水コンセント50と熱交換器36間がそれぞ
れ逆接続された場合で結果的には温水の進行方向に問題
はないが、(C),(D)に示すような逆接続が行われ
ると熱交換器36に循環させる温水の進行方向が逆になっ
てしまい、運転制御に支障をきたすことになる。そこ
で、このような配管接続ミスを無くすために、従来は配
管(往き管47と戻り管48)に目印となるマーキングを施
したり、配管断熱材を色分けしたり、配管を一々手でた
どったり、配管接続後の試運転で配管温度を手で確認し
たりといった手法が取られていたが手間がかかるだけで
なく、正確さに欠ける等の問題があった。したがって、
本発明においては、上述の配管工事が楽に行え、譬え配
管接続ミスがあっても正常に動作する温水暖房機の室内
機を提供することを目的としている。The forward pipe 47 and the return pipe 48 having the same diameter are used in FIG.
The normal piping work as shown in (A) is not always performed, and the connections as shown in (B), (C), and (D) may be performed. (B) is an outdoor unit 32 and a hot water outlet
50 and the hot water outlet 50 and the heat exchanger 36 are reversely connected, respectively, and as a result, there is no problem in the traveling direction of the hot water, but the reverse connection as shown in (C) and (D) is performed. If this happens, the traveling direction of the hot water circulated in the heat exchanger 36 will be reversed, and the operation control will be hindered. Therefore, in order to eliminate such pipe connection mistakes, conventionally, markings that serve as marks on the pipes (the forward pipe 47 and the return pipe 48), the pipe insulation materials are color-coded, and the pipes are traced by hand, The method of manually confirming the pipe temperature in the trial operation after connecting the pipes was used, but it was not only time-consuming, but there were problems such as lack of accuracy. Therefore,
It is an object of the present invention to provide an indoor unit of a hot water heater that can easily perform the above-mentioned piping work and can operate normally even if there is a mistake in the piping connection.
【0004】[0004]
【課題を解決するための手段】本発明は上記の課題を解
決するためになされたものであり、後方上部に室内空気
の吸込口を、前方下部に温風の吹出口を設けた筐体の内
側に室外機から循環させる温水を熱源とする熱交換器
と、同熱交換器で暖められた空気を室内に送出する送風
機と、同送風機を制御する制御部等を備えてなるものに
おいて、前記室外機と熱交換器とを結ぶ温水の往き管と
戻り管との間に前記熱交換器への温水の流れを切り換え
る水路切換手段を設けるとともに、前記熱交換器の入口
側の温水管に温水温度の検出手段を設け、同検出手段に
より検出される温水温度から温水の進行方向が正常か否
かを判定し、正常でなければ前記水路切換手段を切り換
えるように制御させることにした。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is directed to a housing having a room air suction port in the upper rear portion and a warm air outlet in the lower front portion. A heat exchanger that uses hot water as a heat source to circulate from an outdoor unit inside, a blower that sends out the air warmed by the heat exchanger into the room, a control unit that controls the blower, and the like. A water passage switching means for switching the flow of hot water to the heat exchanger is provided between a hot water outgoing pipe and a return pipe that connect the outdoor unit and the heat exchanger, and the hot water is supplied to the hot water pipe on the inlet side of the heat exchanger. A temperature detecting means is provided, and it is determined from the hot water temperature detected by the detecting means whether or not the traveling direction of the hot water is normal. If not, the water channel switching means is switched.
【0005】[0005]
【作用】室外機から熱交換器に送出される温水の温度は
例えば80℃を目標に制御されるので室外機と熱交換器
間に配管接続ミスがなければ熱交換器の入口側の温度は
約80℃になり、熱交換器から室外機に戻る温水の温度
は約60℃となるが、上記の構成であれば、熱交換器の
入口側の温水温度を検出することができるので、この検
出値から温水の進行方向が正常であるかどうかを判定で
き、正常でなければ温水の往き管と戻り管との間に設け
られた水路切換手段を切り換えて温水の進行方向を換え
るようになっているので配管接続ミスがあった場合でも
熱交換器には温水を正常に循環させることができる。The temperature of the hot water sent from the outdoor unit to the heat exchanger is controlled, for example, at 80 ° C. Therefore, the temperature at the inlet side of the heat exchanger will be the same as long as there is no pipe connection error between the outdoor unit and the heat exchanger. The temperature of the hot water that returns to the outdoor unit from the heat exchanger becomes approximately 80 ° C, and the temperature of the hot water that returns to the outdoor unit becomes approximately 60 ° C. However, with the above configuration, the temperature of the hot water at the inlet side of the heat exchanger can be detected. From the detected value, it can be determined whether the direction of warm water is normal or not, and if it is not normal, the direction of hot water can be changed by switching the water channel switching means provided between the hot water forward pipe and the return pipe. Therefore, even if there is a pipe connection error, hot water can be normally circulated in the heat exchanger.
【0006】[0006]
【実施例】以下、本発明の実施例を図1〜図5に基づい
て説明する。図1は温水暖房機の概略構成を表したもの
で、1はファンコンベクタと呼ばれる室内機、2は油だ
き温水ボイラと呼ばれ、室内機1の熱源機として利用さ
れる室外機である。室内機1にはその筐体3の後方上部
に室内空気の吸込口4が有り、前方下部に室内への温風
の吹出口5が有り、内部には室外機2からの温水を熱源
とする熱交換器6と、この熱交換器6で暖められた空気
を室内へ送出する送風機7と、同送風機7等を制御する
室内機制御部8とが有り、熱交換器6の入口側の配管
(往き管)には温度センサ9が、出口側の配管(戻り
管)には温度センサ10が取付けられ、筐体3内の往き管
と戻り管との間には配管接続ミスがあるときに熱交換器
6への温水の流れを切り換えることのできる水路切換手
段11が設けられている。また、筐体5の前面上部には運
転操作部12が、背面下部には室内温度を検出する温度セ
ンサ13が設けられている。一方の室外機2には温水を生
成するボイラ14と、温水を蓄えるシスタンク15と、温水
を熱交換器6へ循環させるポンプ16と、ボイラ14および
ポンプ16等を制御する室外機制御部17等が設けられてい
て、この室外機制御部17と室内機1側の制御部8とは信
号線18で結ばれている。なお、室外機2と室内機1とを
繋ぐ温水の往き管19および戻り管20は建物の壁面21に取
付けられた温水コンセント22で中継されている。Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 shows a schematic configuration of a hot water heater. 1 is an indoor unit called a fan convector, 2 is an oil-fired hot water boiler, and an outdoor unit used as a heat source unit of the indoor unit 1. The indoor unit 1 has an inlet 4 for indoor air in the upper rear part of the housing 3, an outlet 5 for warm air into the room in the lower front part, and uses hot water from the outdoor unit 2 as a heat source inside. There is a heat exchanger 6, a blower 7 that sends out the air warmed by the heat exchanger 6 to the room, and an indoor unit controller 8 that controls the blower 7 and the like, and piping on the inlet side of the heat exchanger 6 is provided. When the temperature sensor 9 is attached to the (outgoing pipe) and the temperature sensor 10 is attached to the outlet side pipe (return pipe), when there is a pipe connection error between the outgoing pipe and the return pipe in the housing 3. Water channel switching means 11 capable of switching the flow of hot water to the heat exchanger 6 is provided. Further, a driving operation unit 12 is provided on the upper front portion of the housing 5, and a temperature sensor 13 for detecting the indoor temperature is provided on the lower rear portion. In one of the outdoor units 2, a boiler 14 that generates hot water, a cis tank 15 that stores hot water, a pump 16 that circulates the hot water to the heat exchanger 6, an outdoor unit control unit 17 that controls the boiler 14, the pump 16, and the like. Is provided, and the outdoor unit control unit 17 and the control unit 8 on the indoor unit 1 side are connected by a signal line 18. The hot water outflow pipe 19 and the return pipe 20 connecting the outdoor unit 2 and the indoor unit 1 are relayed by a hot water outlet 22 attached to a wall surface 21 of the building.
【0007】図2は水路切換手段11の具体例を表したも
ので、この水路切換手段11は温水の往き管19に設けられ
た第1の開閉弁23と、戻り管20に設けられた第2の開閉
弁24と、これら二つの開閉弁23,24の入口側同士間およ
び出口側同士間に交差状に設けられた第3の開閉弁25
と、第4の開閉弁26とからなっており普段は開閉弁23,
24が開放され、開閉弁25,26が閉鎖された状態になって
いる。そして図2の(A)に示すように室外機2と熱交
換器6間の往き管19および戻り管20に配管接続ミスがな
ければ温度センサ9で検出される熱交換器6の入口側の
温水温度は約80℃、温度センサ10で検出される熱交換
器6の出口側の温水温度は約60℃となり、開閉弁23,
24,25,26は運転開始時の状態に保持される。もし、往
き管19と戻り管20が図2の(B)に示すような逆接続に
なっていると熱交換器6内の温水の流れが逆になり、温
度センサ9で検出される本来の入口側の温度が出口側の
温度より低くなってしまう。そこで、制御部8は入口側
の温度を予め設定された判定基準値(例えば78℃)と
比較することにより配管接続ミスを判定するようになっ
ており、配管接続ミスがある場合は開閉弁25,26を開放
させ、開閉弁23,24を閉塞するようになっている。図3
は制御系の概略を表したものである。FIG. 2 shows a concrete example of the water channel switching means 11. The water channel switching means 11 is provided with a first opening / closing valve 23 provided in the hot water outflow pipe 19 and a first on-off valve 20 provided in the return pipe 20. The second opening / closing valve 24 and the third opening / closing valve 25 provided in an intersecting manner between the inlet sides and the outlet sides of these two opening / closing valves 23, 24.
And a fourth on-off valve 26, which is normally on-off valve 23,
24 is open and the on-off valves 25 and 26 are closed. Then, as shown in FIG. 2A, if there is no pipe connection error in the forward pipe 19 and the return pipe 20 between the outdoor unit 2 and the heat exchanger 6, the temperature sensor 9 detects the inlet side of the heat exchanger 6. The hot water temperature is about 80 ° C., the hot water temperature on the outlet side of the heat exchanger 6 detected by the temperature sensor 10 is about 60 ° C., and the opening / closing valve 23,
24, 25 and 26 are held in the state they were in when the operation started. If the forward pipe 19 and the return pipe 20 are reversely connected as shown in FIG. 2 (B), the flow of hot water in the heat exchanger 6 is reversed, and the original temperature detected by the temperature sensor 9 is detected. The temperature on the inlet side becomes lower than the temperature on the outlet side. Therefore, the control unit 8 determines the pipe connection error by comparing the temperature on the inlet side with a preset reference value (for example, 78 ° C.). If there is a pipe connection error, the opening / closing valve 25 , 26 are opened and the on-off valves 23, 24 are closed. FIG.
Shows the outline of the control system.
【0008】ところで、配管接続ミスは上述のように熱
交換器6の入口側の温度で判定させてもよいが、もう一
つの方法としては熱交換器6の出口側の温度が所定値以
上(例えば78℃以上)のとき、あるいは熱交換器6の
入口側と出口側の温度差から判定させてもよい。図4は
後者の場合をフローチャートにより表したもので、室内
機制御部8に運転開始の指示信号が入力されると、ステ
ップST1では熱交換器6の入口側の温度を検出し、ス
テップST2では出口側の温度を検出し、ステップST
3で入口温度と出口温度の比較を行い、入口温度が出口
温度よりも大きければ配管接続ミスはないものとして水
路切換手段11は現状維持のままステップST5に進める
が、もし、入口温度が出口温度よりも小さければ配管接
続ミスがあるものとしてステップST4に進め、水路切
換手段11の切り換えをおこなった後、ステップST5に
進めるようになっており、ステップST5では出口温度
が所定値以上(例えば55℃以上)になるのを待ってス
テップST6に進め、送風機7を運転を開始させるよう
になっている。By the way, the pipe connection error may be judged by the temperature on the inlet side of the heat exchanger 6 as described above, but as another method, the temperature on the outlet side of the heat exchanger 6 is a predetermined value or more ( For example, when the temperature is 78 ° C. or higher), or the temperature difference between the inlet side and the outlet side of the heat exchanger 6 may be used for the determination. FIG. 4 is a flowchart showing the latter case. When an operation start instruction signal is input to the indoor unit control section 8, the temperature at the inlet side of the heat exchanger 6 is detected in step ST1, and in step ST2. Detects the temperature on the outlet side, step ST
In 3, the inlet temperature and the outlet temperature are compared. If the inlet temperature is higher than the outlet temperature, it is assumed that there is no pipe connection error, and the waterway switching means 11 proceeds to step ST5 while maintaining the current state. If it is smaller than this, it is assumed that there is a pipe connection error, the process proceeds to step ST4, and after switching the water channel switching means 11, the process proceeds to step ST5. At step ST5, the outlet temperature is equal to or higher than a predetermined value (for example, 55 ° C.). After waiting for the above (), the process proceeds to step ST6 to start the operation of the blower 7.
【0009】なお、水路切換手段11は図2に示すような
開閉弁23,24,25,26を用いるものに限定するものでは
なく、図5に示すように、往き管19に第1の三方弁27
を、戻り管20に第2の三方弁28を設けるとともに、第1
の三方弁27の切換口cを第2の三方弁28の出口側b(も
しくは入口側a)に、第2の三方弁28の切換口cを第1
の三方弁27の入口側a(もしくは出口側b)にそれぞれ
交差状に結合させたものでも良く、室外機2と熱交換器
6間の配管接続ミスがある場合には第1および第2の開
閉弁27,28の水路を切換口側に切り換えるように制御し
てもよい。The water channel switching means 11 is not limited to the one using the on-off valves 23, 24, 25, 26 as shown in FIG. 2, but as shown in FIG. Valve 27
The return pipe 20 is provided with a second three-way valve 28, and
The switching port c of the three-way valve 27 of the second three-way valve 28 to the outlet side b (or the inlet side a) of the second three-way valve 28, the first switching port c of the second three-way valve 28.
The three-way valve 27 may be connected to the inlet side a (or the outlet side b) in an intersecting manner. If there is a pipe connection error between the outdoor unit 2 and the heat exchanger 6, the first and second The water passages of the on-off valves 27 and 28 may be controlled to be switched to the switching port side.
【0010】[0010]
【発明の効果】以上、説明したような温水暖房機である
ならば、室外機と室内機側の熱交換器との間で配管接続
ミスがあったとしても温風暖房運転が開始される前に温
水の流れが正常な状態に切り換えられるので安全であ
り、配管工事や試運転が楽に行え便利である。As described above, in the case of the hot water heater as described above, even if there is a pipe connection error between the outdoor unit and the heat exchanger on the indoor unit side, the warm air heating operation is not started. Since the flow of hot water can be switched to the normal state, it is safe and convenient for piping work and trial run.
【図1】本発明の実施例を示す温水暖房機の概略構成図
である。FIG. 1 is a schematic configuration diagram of a hot water heater showing an embodiment of the present invention.
【図2】本発明の水路切換手段を備えた温水回路図であ
る。FIG. 2 is a hot water circuit diagram including the water channel switching means of the present invention.
【図3】本発明に係わる温水暖房機の制御ブロック図で
ある。FIG. 3 is a control block diagram of the hot water heater according to the present invention.
【図4】本発明のもう一つの制御動作例を示すフローチ
ャートである。FIG. 4 is a flowchart showing another control operation example of the present invention.
【図5】本発明のもう一つの水路切換手段を備えた温水
回路図である。FIG. 5 is a hot water circuit diagram including another water channel switching means of the present invention.
【図6】従来例を示す温水暖房機の概略構成図である。FIG. 6 is a schematic configuration diagram of a conventional hot water heater.
【図7】配管接続ミスの具体例を示す温水回路図であ
る。FIG. 7 is a hot water circuit diagram showing a specific example of a pipe connection error.
1 室内機(ファンコンベクタ) 2 室外機(油だき温水ボイラ) 3 筐体 6 熱交換器 7 送風機 8 制御部(室内機制御部) 9 温度センサ 10 温度センサ 11 水路切換手段 19 温水の往き管 20 温水の戻り管 22 温水コンセント 1 Indoor unit (fan convector) 2 Outdoor unit (oil-fired hot water boiler) 3 Case 6 Heat exchanger 7 Blower 8 Control unit (indoor unit control unit) 9 Temperature sensor 10 Temperature sensor 11 Water channel switching means 19 Hot water outflow pipe 20 Hot water return pipe 22 Hot water outlet
Claims (7)
部に温風の吹出口を設けた筐体の内側に室外機から循環
させる温水を熱源とする熱交換器と、同熱交換器で暖め
られた空気を室内に送出する送風機と、同送風機を制御
する制御部等を備えてなるものにおいて、前記室外機と
熱交換器とを結ぶ温水の往き管と戻り管との間に前記熱
交換器への温水の流れを切り換える水路切換手段を設け
るとともに、前記熱交換器の入口側の温水管に温水温度
の検出手段を設け、同検出手段により検出される温水温
度から温水の進行方向が正常か否かを判定し、正常でな
ければ前記水路切換手段を切り換えるように制御してな
ることを特徴とする温水暖房機の室内機。1. A heat exchanger using hot water as a heat source, which circulates from an outdoor unit inside a casing having a suction port for indoor air at an upper rear portion and a blowout port for warm air at a lower front portion, and the heat exchanger. In a blower for sending out the air warmed by a room to the room, a control unit for controlling the blower, etc., the hot water forward pipe and the return pipe connecting the outdoor unit and the heat exchanger, Water channel switching means for switching the flow of hot water to the heat exchanger is provided, and hot water temperature detecting means is provided in the hot water pipe on the inlet side of the heat exchanger, and the direction of travel of hot water from the hot water temperature detected by the detecting means. Is determined to be normal, and if not normal, the water channel switching means is controlled so as to be switched, and the indoor unit of the hot water heater.
部に温風の吹出口を設けた筐体の内側に室外機から循環
させる温水を熱源とする熱交換器と、同熱交換器で暖め
られた空気を室内に送出する送風機と、同送風機を制御
する制御部等を備えてなるものにおいて、前記室外機と
熱交換器とを結ぶ温水の往き管と戻り管との間に前記熱
交換器への温水の流れを切り換える水路切換手段を設け
るとともに、前記熱交換器の入口側および出口側の温水
管に温水温度の検出手段を設け、両検出手段により検出
される温水温度の差から温水の進行方向が正常か否かを
判定し、正常でなければ前記水路切換手段を切り換える
ように制御してなることを特徴とする温水暖房機の室内
機。2. A heat exchanger using hot water as a heat source, which circulates from an outdoor unit inside a housing having an inlet for indoor air in the upper rear part and an outlet for warm air in the lower front part, and the heat exchanger. In a blower for sending out the air warmed by a room to the room, a control unit for controlling the blower, etc., the hot water forward pipe and the return pipe connecting the outdoor unit and the heat exchanger, Water channel switching means for switching the flow of hot water to the heat exchanger is provided, and hot water temperature detecting means is provided at the hot water pipes on the inlet side and the outlet side of the heat exchanger, and the difference between the hot water temperatures detected by both detecting means is provided. The indoor unit of the hot water heater is characterized in that whether or not the traveling direction of the hot water is normal is determined, and if it is not normal, the water channel switching means is controlled to be switched.
き管および戻り管に設けられた第1および第2の開閉弁
と、これら二つの開閉弁の入口側同士間および出口側同
士間に交差状に設けられた第3および第4の開閉弁とか
らなり、前記熱交換器への温水の進行方向が正常でない
場合は第1および第2の開閉弁を閉じ、第3および第4
の開閉弁を開けるように制御してなる請求項1および2
記載の温水暖房機の室内機。3. A first and a second on-off valve, wherein the water channel switching means is provided on an outflow pipe and a return pipe to the heat exchanger, and between the inlet sides and between the outlet sides of these two on-off valves. A third and a fourth on-off valve which are provided in a cross shape with each other, and when the traveling direction of the hot water to the heat exchanger is not normal, the first and the second on-off valves are closed, and the third and the fourth on-off valves are closed.
3. The on / off valve of the control unit is controlled so as to be opened.
Indoor unit of the hot water heater described.
の往き管および戻り管に第1および第2の三方弁を設け
るとともに、第1の三方弁の切換口を第2の三方弁の入
口側もしくは出口側に、第2の三方弁の切換口を第1の
三方弁の出口側もしくは入口側にそれぞれ交差状に結合
させ、前記熱交換器への温水の進行方向が正常でない場
合は第1および第2の開閉弁の水路を切換口側に切り換
えるように制御してなる請求項1記載の温水暖房機の室
内機。4. The first and second three-way valves are provided on the outflow pipe and the return pipe to the heat exchanger as the water channel switching means, and the switching port of the first three-way valve is the inlet of the second three-way valve. Side or outlet side, the switching port of the second three-way valve is connected to the outlet side or the inlet side of the first three-way valve in an intersecting manner, and if the traveling direction of the hot water to the heat exchanger is not normal, The indoor unit of the hot water heater according to claim 1, wherein the water passages of the first and second opening / closing valves are controlled so as to be switched to the switching port side.
温度より高いか否かで熱交換器への温水の進行方向が正
常か否かを判定するようにしてなる請求項2記載の温水
暖房機の室内機。5. The method according to claim 2, wherein whether or not the temperature of the inlet side of the heat exchanger is higher than the temperature of the outlet side of the heat exchanger determines whether or not the traveling direction of the hot water to the heat exchanger is normal. Indoor unit of hot water heater.
下の時、前記水路切換手段を切り換えるように制御して
なる請求項1および2記載の温水暖房機の室内機。6. The indoor unit for a hot water heater according to claim 1, wherein the water channel switching means is controlled to switch when the temperature on the inlet side of the heat exchanger is equal to or lower than a predetermined value.
上の時、前記水路切換手段を切り換えるように制御して
なる請求項2記載の温水暖房機の室内機。7. The indoor unit of the hot water heater according to claim 2, wherein the water channel switching means is controlled to switch when the temperature on the outlet side of the heat exchanger is equal to or higher than a predetermined value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18563894A JPH0849865A (en) | 1994-08-08 | 1994-08-08 | Indoor unit for hot water heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18563894A JPH0849865A (en) | 1994-08-08 | 1994-08-08 | Indoor unit for hot water heater |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0849865A true JPH0849865A (en) | 1996-02-20 |
Family
ID=16174278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18563894A Pending JPH0849865A (en) | 1994-08-08 | 1994-08-08 | Indoor unit for hot water heater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0849865A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008130252A (en) * | 2006-11-16 | 2008-06-05 | Kyocera Corp | Fuel cell device |
JP2009019844A (en) * | 2007-07-13 | 2009-01-29 | Rinnai Corp | Hot water utilizing system |
JP2009019845A (en) * | 2007-07-13 | 2009-01-29 | Rinnai Corp | Hot water utilizing system |
KR101455138B1 (en) * | 2007-10-25 | 2014-10-27 | 후지 세이코 가부시키가이샤 | Device for folding body ply |
-
1994
- 1994-08-08 JP JP18563894A patent/JPH0849865A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008130252A (en) * | 2006-11-16 | 2008-06-05 | Kyocera Corp | Fuel cell device |
JP2009019844A (en) * | 2007-07-13 | 2009-01-29 | Rinnai Corp | Hot water utilizing system |
JP2009019845A (en) * | 2007-07-13 | 2009-01-29 | Rinnai Corp | Hot water utilizing system |
JP4668246B2 (en) * | 2007-07-13 | 2011-04-13 | リンナイ株式会社 | Hot water use system |
KR101455138B1 (en) * | 2007-10-25 | 2014-10-27 | 후지 세이코 가부시키가이샤 | Device for folding body ply |
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