JP3622237B2

JP3622237B2 - Indoor unit of hot water heater

Info

Publication number: JP3622237B2
Application number: JP22527694A
Authority: JP
Inventors: 隆行太田
Original assignee: Fujitsu General Ltd
Current assignee: Fujitsu General Ltd
Priority date: 1994-09-20
Filing date: 1994-09-20
Publication date: 2005-02-23
Anticipated expiration: 2020-02-23
Also published as: JPH0886456A

Description

【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に関する。
【０００２】
【従来の技術】
温水暖房機には例えば図３に示すようなファンコンベクタと呼ばれる室内機２１と、油だき温水ボイラと呼ばれ、前記室内機２１の熱源機として利用される室外機２２とからなるものがある。室内機２１は室外機２２からの温水を熱源とする熱交換器２３と、この熱交換器２３で暖められた空気を室内へ送出する送風機２４とで構成され、一方の室外機２２は温水を生成するボイラ２５と、温水を蓄えるシスタンク２６と、温水を循環させるポンプ２７等で構成され、室外機２２と室内機２１間は温水の往き管２８と戻り管２９とで結ばれている。また、室内機２１側には送風機２４等を制御する制御部３０を備えた運転操作部３１が有り、室外機２２側にはボイラ２５，ポンプ２７等を制御する制御部３２が有り、両制御部は図示されてない信号線で結ばれている。
【０００３】
【発明が解決しようとする課題】
ところで、上述の室内機２１は一般に壁寄りの床面に設置され室外機２２との間が配管接続されるため、石油ストーブやファンヒータ等に比べれば転倒事故を起こす可能性は低い。そのためか、従来の室内機２１には石油ストーブやファンヒータ等に設けられているような事故防止対策（例えば、電源遮断装置等）は無く、室内機２１が傾斜したり転倒した状態でも送風機２４の運転は停止されず、熱交換器２３には温水が流れっぱなしになる。しかしながら、室内機２１側の配管の接続位置は筐体の後方下部にあるため、筐体の上部は動き易く、もし、筐体と壁との間で転倒防止策がなされてない場合には子供が引っ張ったり、大きな地震が発生した時などに転倒する恐れがあり、運転中であれば吹出口からの温風が床面に直接当たるようになり、床面の温度が異常に上昇するなどの不具合が発生する。したがって、本発明においては、このような不具合を発生させることのない、より安全な温水暖房機の室内機を提供することを目的としている。
【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、筐体内に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、同送風機等を制御する制御部とを備えたものにおいて、前記筐体に、同筐体が傾斜乃至は転倒すると作動する転倒検出手段を設けるとともに、前記熱交換器の温水経路に開閉弁を設け、前記筐体が傾斜乃至は転倒した時、前記熱交換器への温水を遮断するようにした。
【０００５】
【作用】
上記の構成であれば、運転中に例えば地震が発生して筐体が傾斜してしまったような時、転倒検出手段が作動し、これを検知した制御部が開閉弁を制御して熱交換器への温水を遮断することができ、異常運転を防止できる。
【０００６】
【実施例】
以下、本発明の一実施例を図１〜図２に基づいて説明する。図１は温水暖房機の室内機の概略構成を表したもので、１は後方上部に室内空気の吸込口２を、前方下部に温風の吹出口３を有する筐体である。この筐体１の内部には従来の技術の項で説明したような室外機からの温水を熱源とする熱交換器４と、この熱交換器４で暖められた空気を室内へ送出する送風機５と、同送風機５等を制御する室内機制御部６とが有り、熱交換器４の入口側の温水管（往き管）７には開閉弁８が設けられ、出口側の温水管（戻り管）９には図示はされてないが熱交換器４から室外機に戻る温水の温度を検出する温度センサが設けられている。また、筐体１の前面上部には運転操作部１０が、背面下部には図示はされてないが室内温度を検出する温度センサが有り、底部には筐体１が地震などにより傾斜したり転倒したりして床面１１との間に隙間ができた時に作動する転倒検出手段（スイッチ）１２が設けられている。
【０００７】
図２は温水暖房機の制御系の概略を表したもので、室内機制御部６には運転操作部１０で設定された室温や風量に関する情報と、温度センサにより検出された温水温度に関する情報、室内温度に関する情報等が入力され、室内機制御部６ではこれらの入力情報を基に送風機５を制御すると共に、室外機制御部との情報交換を行うようになっている。ところで、本発明の特徴とするところは、先に説明した開閉弁８と転倒検出手段１２を室内機に設け、この転倒検出手段の動作を室内機制御部（マイクロコンピュータ）６により検知させるようにし、筐体１が地震や子供の悪戯などで傾いた時に送風機駆動手段１３および開閉弁駆動手段１４を制御して送風機５の運転を停止させると共に、開閉弁８を切換えて熱交換器４への温水の流れを遮断し、更に、室外機制御部１５に所定の信号を送り、室外機（熱源機）の運転を停止させるようにしたことである。なお、本実施例では以上説明したような手段により、温水の流れを遮断したり送風機５の運転を停止させたりするようになっているが、このような手段に限定するものではなく、転倒検出手段１２は一種のスイッチでもあるので例えば室内機の電源回路あるいは室内機制御部６の電源回路に直列に設けて電源を遮断するようにしてもよい。
【０００８】
【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、地震や子供の悪戯で室内機が転倒するようなことがあっても、その時は速やかに温水経路が遮断されると共に、送風機等の運転が停止されるので、筐体内部や床面が過熱状態になるようなこともなく、より安全な暖房システムとなる。
【図面の簡単な説明】
【図１】本発明の一実施例を示す温水暖房機の概略構成図である。
【図２】本発明の一実施例を示す温水暖房機の制御ブロック図ある。
【図３】従来例を示す温水暖房機の概略構成図である。
【符号の説明】
１筐体（室内機の）
２吸込口
３吹出口
４熱交換器
５送風機
６制御部
７温水管（往き管）
８開閉弁
９温水管（戻り管）
１０運転操作部
１１床面
１２転倒検出手段（スイッチ）[0001]
[Industrial application fields]
The present invention relates to a configuration of an indoor unit of a hot water heater called a fan convector.
[0002]
[Prior art]
Some hot water heaters include, for example, an indoor unit 21 called a fan convector as shown in FIG. 3 and an outdoor unit 22 called an oil-fired hot water boiler and used as a heat source unit of the indoor unit 21. The indoor unit 21 includes a heat exchanger 23 that uses hot water from the outdoor unit 22 as a heat source, and a blower 24 that sends the air warmed by the heat exchanger 23 to the room. One outdoor unit 22 supplies hot water. A boiler 25 to be generated, a cis tank 26 that stores hot water, a pump 27 that circulates hot water, and the like are connected. The outdoor unit 22 and the indoor unit 21 are connected by a hot water forward pipe 28 and a return pipe 29. The indoor unit 21 has an operation unit 31 having a control unit 30 for controlling the blower 24 and the like, and the outdoor unit 22 has a control unit 32 for controlling the boiler 25, the pump 27, and the like. The parts are connected by signal lines not shown.
[0003]
[Problems to be solved by the invention]
By the way, since the indoor unit 21 described above is generally installed on the floor near the wall and connected to the outdoor unit 22 by piping, there is a low possibility of causing a fall accident as compared with an oil stove, a fan heater or the like. For this reason, the conventional indoor unit 21 has no accident prevention measures (for example, a power shut-off device) provided in an oil stove, a fan heater, or the like, and the blower 24 even when the indoor unit 21 is tilted or falls. The operation is not stopped, and warm water continues to flow through the heat exchanger 23. However, since the connection position of the pipe on the indoor unit 21 side is in the lower rear part of the housing, the upper part of the housing is easy to move, and if there is no fall prevention measure between the housing and the wall, the child May overturn in the event of a major earthquake or a major earthquake, etc., and hot air from the outlet will directly hit the floor during operation, causing the floor temperature to rise abnormally. A malfunction occurs. Therefore, it is an object of the present invention to provide a safer indoor unit for a hot water heater that does not cause such a problem.
[0004]
[Means for Solving the Problems]
The present invention has been made to solve the above-described problems, and includes a heat exchanger that uses hot water as a heat source in a housing, a blower that sends air heated by the heat exchanger into the room, the blower, and the like. Provided with a control unit for controlling the casing, the casing is provided with a fall detection means that operates when the casing is tilted or falls, and an open / close valve is provided in the hot water path of the heat exchanger. When the body tilts or falls, the hot water to the heat exchanger is cut off.
[0005]
[Action]
With the above configuration, when a case such as an earthquake occurs during operation and the housing is tilted, the fall detection means operates, and the control unit that detects this operates the on-off valve to control heat exchange. The hot water to the vessel can be shut off and abnormal operation can be prevented.
[0006]
【Example】
An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a schematic configuration of an indoor unit of a hot water heater. Reference numeral 1 denotes a housing having a room air inlet 2 at the upper rear and a hot air outlet 3 at the lower front. Inside the housing 1 is a heat exchanger 4 that uses hot water from an outdoor unit as described in the section of the prior art as a heat source, and a blower 5 that sends out the air warmed by the heat exchanger 4 into the room. And an indoor unit control unit 6 for controlling the blower 5 and the like, and a hot water pipe (outward pipe) 7 on the inlet side of the heat exchanger 4 is provided with an open / close valve 8 and a hot water pipe (return pipe) on the outlet side. ) 9 is provided with a temperature sensor (not shown) for detecting the temperature of warm water returning from the heat exchanger 4 to the outdoor unit. In addition, a driving operation unit 10 is provided at the upper front portion of the housing 1 and a temperature sensor (not shown) for detecting the indoor temperature is provided at the lower rear portion, and the housing 1 is inclined or falls due to an earthquake or the like at the bottom portion. For example, a fall detection means (switch) 12 is provided that operates when a gap is formed between the floor surface 11 and the floor surface 11.
[0007]
FIG. 2 shows an outline of the control system of the hot water heater. The indoor unit control unit 6 includes information on the room temperature and the air volume set in the operation unit 10 and information on the hot water temperature detected by the temperature sensor. Information relating to the room temperature and the like are input, and the indoor unit control unit 6 controls the blower 5 based on these input information and exchanges information with the outdoor unit control unit. By the way, the feature of the present invention is that the on-off valve 8 and the fall detection means 12 described above are provided in the indoor unit, and the operation of the fall detection means is detected by the indoor unit control unit (microcomputer) 6. When the casing 1 is tilted due to an earthquake or a child's mischief, the blower drive means 13 and the on-off valve drive means 14 are controlled to stop the operation of the blower 5 and the on-off valve 8 is switched to connect to the heat exchanger 4. The flow of the hot water is interrupted, and further, a predetermined signal is sent to the outdoor unit control unit 15 to stop the operation of the outdoor unit (heat source unit). In the present embodiment, the flow of hot water is interrupted or the operation of the blower 5 is stopped by the means described above. However, the present invention is not limited to such means, and the fall detection is performed. Since the means 12 is also a kind of switch, for example, it may be provided in series with the power supply circuit of the indoor unit or the power supply circuit of the indoor unit control unit 6 to cut off the power supply.
[0008]
【The invention's effect】
In the case of a hot water heater as described above, even if an indoor unit may fall down due to an earthquake or a child's mischief, the hot water path is immediately shut off and the operation of the blower etc. Since it is stopped, the inside of the housing and the floor surface are not overheated, and a safer heating system is obtained.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a hot water heater showing an embodiment of the present invention.
FIG. 2 is a control block diagram of a hot water heater showing an embodiment of the present invention.
FIG. 3 is a schematic configuration diagram of a hot water heater showing a conventional example.
[Explanation of symbols]
1 Housing (for indoor units)
2 Inlet 3 Outlet 4 Heat exchanger 5 Blower 6 Control unit 7 Hot water pipe (outward pipe)
8 On-off valve 9 Hot water pipe (return pipe)
10 driving operation part 11 floor 12 fall detection means (switch)

Claims

In the housing provided with a heat exchanger using hot water as a heat source, a blower that sends out the air warmed by the heat exchanger into the room, and a controller that controls the blower, etc. In addition to providing a fall detection means that operates when the casing is tilted or falls, an on-off valve is provided in the hot water path of the heat exchanger, and when the casing is tilted or falls, hot water is supplied to the heat exchanger. An indoor unit of a hot water heater characterized by being cut off.

The indoor unit of a hot water heater according to claim 1, wherein when the overturn detection means operates, the operation of the blower is stopped.

The indoor unit of a hot water heater according to claim 1, wherein when the overturn detection means is operated, the operation of the heat source device that circulates the hot water in the heat exchanger is stopped.

The indoor unit of a hot water heater according to claim 1, wherein the fall detection means is provided at the bottom of the casing.

The indoor unit of a hot water heater according to claim 1, wherein the fall detection means is provided in series with a power circuit of the indoor unit.