JP2008110021A - Mist spray device - Google Patents

Mist spray device Download PDF

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JP2008110021A
JP2008110021A JP2006294387A JP2006294387A JP2008110021A JP 2008110021 A JP2008110021 A JP 2008110021A JP 2006294387 A JP2006294387 A JP 2006294387A JP 2006294387 A JP2006294387 A JP 2006294387A JP 2008110021 A JP2008110021 A JP 2008110021A
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mist
hot water
return temperature
heat exchanger
water
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JP4829747B2 (en
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Kazuyuki Morimoto
和幸 森本
Masatsuna Fukuda
正綱 福多
Kenji Nishi
健志 西
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Harman Pro Co Ltd
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Harman Pro Co Ltd
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  • Devices For Medical Bathing And Washing (AREA)
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a mist spray device which automatically performs thermal sterilization when starting mist operation and has a drainage free specification not requiring drainage operation of remaining water. <P>SOLUTION: The mist spray device 3 is provided with a mist nozzle 10 for spraying water for a mist bath in a bathroom 13 and a hot water returning temperature monitoring part which monitors hot water returning temperature from a heat exchanger 11 for mist when the mist operation starts and which performs monitoring control over the hot water returning temperature so that mist spray starts after it is determined on the basis of the monitoring result that the hot water returning temperature has been equal to prescribed temperature or higher for a prescribed time. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、ミスト噴霧装置に関し、詳しくはミスト用給水管路内に滞留した残水中の雑菌の殺菌機能を有するミスト噴霧装置に関するものである。   The present invention relates to a mist spraying device, and more particularly, to a mist spraying device having a function of sterilizing germs in residual water staying in a water supply pipe for mist.

従来、浴室内にミストサウナ用の水を噴霧するミストノズルと、ミストノズルに水を供給するミスト用給水管路と、ミスト用給水管路に配置されてミストノズルへの水の供給を行なう給水手段と、ミストノズルに供給される水を熱源機からの温水により加熱するミスト用熱交換器とを備えたミスト噴霧装置が知られている。   Conventionally, a mist nozzle that sprays water for mist sauna in the bathroom, a mist water supply pipe that supplies water to the mist nozzle, and a water supply that is disposed in the mist water supply pipe and supplies water to the mist nozzle There is known a mist spraying device including means and a heat exchanger for mist that heats water supplied to the mist nozzle with hot water from a heat source machine.

ところで、ミスト噴霧装置は長期間使用しない場合に、ミスト用給水管路内の残水中にレジオネラ菌などの雑菌が繁殖して、ミスト運転開始時にミストノズルから浴室内に噴出され、不衛生となる虞がある。   By the way, when the mist spraying device is not used for a long period of time, various bacteria such as Legionella bacteria propagate in the residual water in the water supply pipe for mist, and are ejected from the mist nozzle into the bathroom at the start of the mist operation, which becomes unsanitary. There is a fear.

そこで従来から、ミスト用熱交換器とミストノズルとの間にノズル開閉弁を備え、ノズル開閉弁より上流側に排水管路を分岐させて排水弁を開閉させることで、ミスト噴霧装置を長期間使用しない場合であっても、ミスト運転開始時にミスト用給水管路内の残水がミストノズルから浴室内に噴出されるのを防止できるようにしたミスト噴霧装置が知られている（例えば特許文献１参照）。   Therefore, conventionally, a mist spraying device has been provided for a long time by providing a nozzle opening / closing valve between the mist heat exchanger and the mist nozzle, branching the drainage pipe upstream from the nozzle opening / closing valve, and opening and closing the drainage valve. There is known a mist spraying device capable of preventing residual water in a mist water supply pipe from being ejected from a mist nozzle into a bathroom even when not used. 1).

ところが前記特許文献１に記載の技術では、ミスト運転開始時にミスト用給水管路内の残水（ミストサウナ使用後の一度加熱されたミスト用熱交換器内の残水）がミストノズルから浴室内に噴出されないように排水管路から排水しているので、このため、ミスト噴霧装置内部の配管を行う上で設計上の制約となり、またミスト噴霧装置を浴室に設置する際に残水を排出するための配管が別途必要がとなり、さらに残水の排出は水の廃棄を伴うために省資源でないという問題があった。
特開２００５−２４１２２４号公報 However, in the technique described in Patent Document 1, residual water in the water supply line for mist at the start of mist operation (residual water in the heat exchanger for mist heated once after using the mist sauna) is transferred from the mist nozzle into the bathroom. As a result, the water is drained from the drain pipe so that it is not blown into the water. Therefore, this is a design restriction for the piping inside the mist spraying device, and residual water is discharged when the mist spraying device is installed in the bathroom. Therefore, there is a problem that the drainage of the remaining water is not resource-saving because it requires disposal of the water.
JP-A-2005-241224

本発明は前記の従来の問題点に鑑みて発明したものであって、ミスト運転開始時に加熱殺菌を自動的に行なうことができると共に、従来のような残水の排水操作が不要な排水レス仕様となり、ミスト噴霧装置を浴室に設置する際の設計上の制約がなくなり、しかも水の廃棄を伴うことがなく省資源に寄与できるミスト噴霧装置を提供することを課題とするものである。   The present invention has been invented in view of the above-mentioned conventional problems, and can perform heat sterilization automatically at the start of mist operation, and does not require a drain operation for residual water as in the prior art. Thus, it is an object of the present invention to provide a mist spraying device that eliminates design restrictions when the mist spraying device is installed in a bathroom, and that contributes to resource saving without being accompanied by disposal of water.

前記課題を解決するために本発明は、浴室１３内にミストサウナ用の水を噴霧するミストノズル１０と、ミストノズル１０に水を供給するミスト用給水管路２０と、ミスト用給水管路２０に配置されてミストノズル１０への水の供給を行なう給水手段と、ミストノズル１０に供給される水を熱源機１４からの温水により加熱するミスト用熱交換器１１とを備えたミスト噴霧装置であって、ミスト運転開始時に前記ミスト用熱交換器１１からの温水戻り温度を監視し、この監視結果に基づき、温水戻り温度が所定温度以上であることを所定時間以上継続したことを判定した後にミスト噴霧を開始するように温水戻り温度監視制御を実行する温水戻り温度監視部６を備えることを特徴としている。   In order to solve the above-mentioned problems, the present invention provides a mist nozzle 10 for spraying water for mist sauna in the bathroom 13, a mist feed pipe 20 for supplying water to the mist nozzle 10, and a mist feed pipe 20. A mist spraying device provided with water supply means for supplying water to the mist nozzle 10 and a mist heat exchanger 11 for heating the water supplied to the mist nozzle 10 with hot water from the heat source unit 14. After the hot water return temperature from the mist heat exchanger 11 is monitored at the start of the mist operation, and after determining that the hot water return temperature is equal to or higher than a predetermined temperature based on the monitoring result, A hot water return temperature monitoring unit 6 that performs hot water return temperature monitoring control so as to start mist spraying is provided.

このような構成とすることで、ミスト噴霧を開始する前にミスト用熱交換器１１を所定温度以上を所定時間以上継続して加熱できるので、もしも、ミスト用熱交換器１１内にレジオネラ菌などの雑菌が繁殖していたとしても、その雑菌を死滅させることが可能となる。これによりミスト運転開始時に加熱殺菌が自動的に行なわれると共に、従来のような残水の排水操作が不要な排水レス仕様となる。   With such a configuration, the mist heat exchanger 11 can be continuously heated at a predetermined temperature or higher for a predetermined time or longer before the mist spraying is started, so if Legionella or the like is contained in the mist heat exchanger 11 Even if other germs are propagated, the germs can be killed. As a result, the heat sterilization is automatically performed at the start of the mist operation, and the drainage-free specification is unnecessary, which does not require the drainage operation of the remaining water as in the prior art.

また、浴室１３内に温風を供給する暖房機本体２が付設され、暖房機本体２は、循環ファン５と、循環ファン５からの風を加熱する暖房用熱交換器７と、暖房用熱交換器７を加熱するための温水を供給する熱源機１４と、熱源機１４からの温水を前記ミスト用熱交換器１１に循環させるためのミスト加熱用温水管路１９とを備え、前記ミスト用熱交換器１１から戻される循環温水の温度を前記温水戻り温度監視部６にて監視するのが好ましく、この場合、暖房機能を備えたミスト噴霧装置３において、ミスト用熱交換器１１を循環する温水戻り温度を監視することで加熱殺菌効果が得られるようになる。   Moreover, the heater main body 2 which supplies warm air in the bathroom 13 is attached, and the heater main body 2 is equipped with the circulation fan 5, the heat exchanger 7 for heating which heats the wind from the circulation fan 5, and the heat for heating. A heat source unit 14 for supplying hot water for heating the exchanger 7, and a mist heating hot water line 19 for circulating the hot water from the heat source unit 14 to the mist heat exchanger 11. The temperature of the circulating hot water returned from the heat exchanger 11 is preferably monitored by the hot water return temperature monitoring unit 6. In this case, the mist heat exchanger 11 having a heating function is circulated through the mist heat exchanger 11. The heat sterilization effect can be obtained by monitoring the warm water return temperature.

また、前記温水戻り温度監視部６は、温水戻り温度が少なくとも７０℃以上を少なくとも３０秒以上継続したことを判定した後にミスト噴霧を開始するのが好ましく、この場合、水中に７０℃で５秒間さらすと死滅するレジオネラ菌を確実に死滅させることができ、殺菌効果がより確実となる。   The warm water return temperature monitoring unit 6 preferably starts the mist spraying after determining that the warm water return temperature has continued at least 70 ° C. or more for at least 30 seconds. If it exposes, Legionella bacteria which will be killed can be killed reliably, and a bactericidal effect will become more reliable.

また、前記ミストノズル１０の入り口側に逆止弁２４を配置するのが好ましく、この場合、ミストノズル１０の内部への雑菌の侵入を逆止弁２４によって未然に防止できるようになる。   Further, it is preferable to arrange a check valve 24 on the inlet side of the mist nozzle 10, and in this case, the check valve 24 can prevent invasion of various germs into the mist nozzle 10.

また、前記温水戻り温度監視部６は、ミスト運転停止状態が第２所定時間以上継続した場合のみミスト運転開始時に温水戻り温度監視制御を実行し、ミスト運転停止状態が第２所定時間未満の場合はミスト運転開始時に温水戻り温度監視制御を実行せずにミスト噴霧を開始可能とするのが好ましく、また、前記第２所定時間は２４時間であるのが好ましく、この場合、ミスト運転停止状態が第２所定時間（２４時間）未満の場合は雑菌が有害な量まで繁殖しないことから、温水戻り温度監視制御を実効せずに、速やかなミスト噴霧ができるようになる。   The hot water return temperature monitoring unit 6 executes the hot water return temperature monitoring control at the start of the mist operation only when the mist operation stop state continues for the second predetermined time or more, and the mist operation stop state is less than the second predetermined time. It is preferable that the mist spraying can be started without executing the warm water return temperature monitoring control at the start of the mist operation, and the second predetermined time is preferably 24 hours. In this case, the mist operation stop state is When the time is less than the second predetermined time (24 hours), the germs do not propagate to a harmful amount, so that the mist spraying can be performed quickly without performing the hot water return temperature monitoring control.

本発明は、温水戻り温度監視制御の実行によりミスト噴霧を開始する前にミスト用熱交換器を所定温度以上、所定時間以上継続して加熱できるので、もしも、ミスト用熱交換器１１内にレジオネラ菌などの雑菌が繁殖していたとしても、その雑菌を死滅させることが可能となり、ミスト運転開始時に加熱殺菌が自動的に行なわれると共に、従来のような残水の排水操作が不要な排水レス仕様となる。従って、ミスト噴霧装置内部の配管を行う上で設計上の制約がなくなり、またミスト噴霧装置を浴室に設置する際に残水を排出するための配管が不要となり、さらに水の廃棄を伴わないので省資源化を図ることができるものである。   In the present invention, the heat exchanger for mist can be continuously heated for a predetermined temperature or more and for a predetermined time or more before the mist spraying is started by executing the warm water return temperature monitoring control. Even if miscellaneous germs such as germs have propagated, it is possible to kill the germs, heat sterilization is automatically performed at the start of mist operation, and drainage-free operation that does not require conventional wastewater drainage operations It becomes a specification. Therefore, there are no design restrictions on the piping inside the mist spraying device, and there is no need for piping for draining residual water when installing the mist spraying device in the bathroom, and there is no disposal of water. Resources can be saved.

以下、本発明を添付図面に示す実施形態に基いて説明する。   Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

図１は本発明の一実施形態に用いるミストサウナ機能付き浴室暖房乾燥機１の配管図であり、図２はその側面断面図である。   FIG. 1 is a piping diagram of a bathroom heating dryer 1 with a mist sauna function used in an embodiment of the present invention, and FIG. 2 is a side sectional view thereof.

ミストサウナ機能付き浴室暖房乾燥機１は、図４に示すように、浴室１３の天井部に設置され、浴室１３内に温風を供給する暖房機本体２と、浴室１３内にミスト噴霧を行なうミスト噴霧装置３とで構成されている。なお図４中の１５は浴室１３外に設置されるリモコン操作部であり、ミスト運転スイッチ、暖房運転スイッチ、換気運転スイッチ、乾燥運転スイッチ、涼風運転スイッチ等が設けられている。   As shown in FIG. 4, the bathroom heater / dryer 1 with a mist sauna function is installed on the ceiling of the bathroom 13, and performs the mist spraying in the heater body 2 that supplies hot air into the bathroom 13 and the bathroom 13. The mist spraying apparatus 3 is comprised. 4 is a remote control operation unit installed outside the bathroom 13, and is provided with a mist operation switch, a heating operation switch, a ventilation operation switch, a drying operation switch, a cool air operation switch, and the like.

前記暖房機本体２は、図１、図２に示すように、循環ファン５と、循環ファン５により通風される空気を熱源機１４（図４）から供給される温水により加熱する暖房用熱交換器７と、暖房用熱交換器７への温水の供給量を調節する熱動弁８とを備えている。暖房用熱交換器７は、熱源機１４からの温水が循環する暖房用温水管路１６の途中に配置され、熱動弁８を開放することで、循環ファン５からの風が暖房用熱交換器７により加熱されて、下方の温風吹き出し口３０から浴室１３内に供給されるようになっている。さらに暖房用温水管路１６の途中には、後述のミスト用熱交換器１１を加熱するためのミスト加熱用温水管路１９がバイパス接続されている。ミスト加熱用温水管路１９の上流端は暖房用温水管路１６の熱動弁８よりも上流位置に分岐接続され、ミスト加熱用温水管路１９の下流端は暖房用温水管路１６の暖房用熱交換器７よりも下流位置に合流している。図１中の９は浴室温度センサー、１７は温水往き温度センサー、２６は換気ファンであり、図２中の２７は空気吸込み口３３に設けられるグリル板、２８は温風吹き出し口３０に設けられる可動ルーバー、３４は排気エルボである。   As shown in FIGS. 1 and 2, the heater main body 2 is a heat exchanger for heating that heats the circulation fan 5 and the air ventilated by the circulation fan 5 using hot water supplied from the heat source unit 14 (FIG. 4). And a thermal valve 8 that adjusts the amount of hot water supplied to the heating heat exchanger 7. The heating heat exchanger 7 is disposed in the middle of the heating hot water conduit 16 through which the hot water from the heat source unit 14 circulates, and the heat from the circulation fan 5 is exchanged for heating by opening the thermal valve 8. It is heated by the vessel 7 and supplied into the bathroom 13 from the hot air outlet 30 below. Further, a mist heating hot water pipe 19 for heating a mist heat exchanger 11 to be described later is bypassed in the middle of the heating hot water pipe 16. The upstream end of the mist heating hot water pipeline 19 is branched and connected to the upstream position of the heating valve 8 of the heating hot water pipeline 16, and the downstream end of the mist heating hot water pipeline 19 is the heating of the heating hot water pipeline 16. The heat exchanger 7 joins the downstream position. In FIG. 1, 9 is a bathroom temperature sensor, 17 is a warm water temperature sensor, 26 is a ventilation fan, 27 in FIG. 2 is a grill plate provided in the air inlet 33, and 28 is provided in the hot air outlet 30. A movable louver 34 is an exhaust elbow.

前記暖房機本体２の機器ケーシング２５の上部にはミストボックス３２が載設されている。ミストボックス３２内には、ミスト用給水管路２０の一部が配管されており、ミスト用給水管路２０の途中には後述のミスト用熱交換器１１が配置されている。ミスト用熱交換器１１よりも上流側は、給水電磁弁２２及びストレーナ２３を介して、外部の水道管に接続されている。ミスト用給水管路２０の下流側の部分は暖房機本体２の機器ケーシング２５内に配管されていると共に、機器ケーシング２５内に設置される第１及び第２ノズル開閉弁２９ａ，２９ｂを介して、ミストサウナ用の水を噴霧するミストノズル１０に接続されている。このようにミストボックス３２から機器ケーシング２５にまたがって配管されるミスト用給水管路２０と、ミストボックス３２内のミスト用熱交換器１１及び給水電磁弁２２と、機器ケーシング２５内のノズル開閉弁２９ａ，２９ｂ及びミストノズル１０とで、ミスト噴霧装置３が構成されている。   A mist box 32 is placed on the upper part of the equipment casing 25 of the heater body 2. In the mist box 32, a part of the mist water supply pipe 20 is piped, and a mist heat exchanger 11 described later is disposed in the middle of the mist water supply pipe 20. The upstream side of the mist heat exchanger 11 is connected to an external water pipe via a water supply electromagnetic valve 22 and a strainer 23. The downstream portion of the water supply pipe 20 for mist is piped in the equipment casing 25 of the heater body 2 and via first and second nozzle opening / closing valves 29a and 29b installed in the equipment casing 25. The mist nozzle 10 for spraying water for the mist sauna is connected. As described above, the mist water supply pipe 20 piped from the mist box 32 to the equipment casing 25, the mist heat exchanger 11 and the water supply electromagnetic valve 22 in the mist box 32, and the nozzle opening / closing valve in the equipment casing 25. 29a, 29b and the mist nozzle 10 constitute a mist spraying device 3.

また、前記ミストボックス３２内には、前記暖房用温水管路１６から分岐されたミスト加熱用温水管路１９の一部が配管されていると共に、ミスト加熱用温水管路１９からミスト用熱交換器１１に供給される水温が適切になったときに温水の出湯量の調節を行う水比例弁１２と、ミスト用熱交換器１１からの循環温水の戻り温度を検知するための温水戻り温度センサー２１とが設置されている。さらにミスト用熱交換器１１から吐出する水の温度を検知するためのミスト温度センサー１８が設置されている。   In the mist box 32, a part of the mist heating hot water pipe 19 branched from the heating hot water pipe 16 is piped, and the mist heating hot water pipe 19 exchanges heat for mist. A water proportional valve 12 that adjusts the amount of hot water discharged when the water temperature supplied to the vessel 11 becomes appropriate, and a hot water return temperature sensor for detecting the return temperature of the circulating hot water from the mist heat exchanger 11 21 are installed. Further, a mist temperature sensor 18 for detecting the temperature of water discharged from the mist heat exchanger 11 is installed.

ここで、ミストボックス３２に設置されるミスト用熱交換器１１は、例えば複数枚の伝熱プレートを積層したプレート式の液−液熱交換器で構成されている。ミスト用熱交換器１１の一次側には前記暖房用温水管路１６にバイパス接続されたミスト加熱用温水管路１９が接続され、二次側にはミスト用給水管路２０が接続され、ミスト加熱用温水管路１９に配置した水比例弁１２を開くことで、ミスト用熱交換器１１の一次側に温水が供給され、これにより二次側を通過するミストサウナ用の水が加熱されるようになっている。   Here, the heat exchanger 11 for mist installed in the mist box 32 is comprised by the plate-type liquid-liquid heat exchanger which laminated | stacked the several heat exchanger plate, for example. A mist heating hot water pipe 19 bypassed to the heating hot water pipe 16 is connected to the primary side of the mist heat exchanger 11, and a mist water supply pipe 20 is connected to the secondary side of the mist heat exchanger 11. By opening the water proportional valve 12 disposed in the heating hot water pipeline 19, hot water is supplied to the primary side of the heat exchanger 11 for mist, thereby heating the water for the mist sauna passing through the secondary side. It is like that.

また、機器ケーシング２５に設置されるミストノズル１０は、機器ケーシング２５のグリル板２５ａに設けた開口部２５ｃに嵌め込まれる前パネル２５ｂのノズル用開口孔４０から浴室１３内に臨んで配置されている。本例ではミストノズル１０は３個設けられ、例えば、ノズル開閉弁２９ａ側の１個のミストノズル１０ａは、マイルドなミストサウナ（ミスト噴霧量が例えば０．５リットル／ｍｉｎ）を得るためのものであり、ノズル開閉弁２９ｂ側の２個のミストノズル１０ｂ，１０ｃはハードなミストサウナ（ミスト噴霧量が例えば１．０リットル／ｍｉｎ）を得るためのものである。   Further, the mist nozzle 10 installed in the equipment casing 25 is disposed facing the inside of the bathroom 13 from the nozzle opening hole 40 of the front panel 25b fitted into the opening 25c provided in the grill plate 25a of the equipment casing 25. . In this example, three mist nozzles 10 are provided. For example, one mist nozzle 10a on the nozzle opening / closing valve 29a side is for obtaining a mild mist sauna (mist spray amount is 0.5 liter / min, for example). The two mist nozzles 10b and 10c on the nozzle opening / closing valve 29b side are for obtaining a hard mist sauna (mist spray amount is, for example, 1.0 liter / min).

浴室１３内は制御部４により所定温度に制御される。制御部４は、図５に示すように、リモコン操作部１５から指令されるリモコン信号以外に、浴室温度センサー９、温水往き温度センサー１７、ミスト温度センサー１８、温水戻り温度センサー２１からの各検知信号を受信すると共に、各検知結果に基づいて暖房機本体２及びミスト噴霧装置３の各構成部品を駆動制御するマイクロコンピュータにより構成される。   The inside of the bathroom 13 is controlled to a predetermined temperature by the control unit 4. As shown in FIG. 5, the control unit 4 detects each of the detection from the bathroom temperature sensor 9, the hot water going-out temperature sensor 17, the mist temperature sensor 18, and the hot water return temperature sensor 21 in addition to the remote control signal commanded from the remote control operation unit 15. The microcomputer is configured to receive a signal and to drive and control each component of the heater main body 2 and the mist spraying device 3 based on each detection result.

ここで、本発明においては、図５に示すように、制御部４内にミスト運転開始時に温水戻り温度監視制御を実行する温水戻り温度監視部６を備えている。温水戻り温度監視制御システムは、ミスト用熱交換器１１からの温水戻り温度を図１に示すサーミスタ等からなる温水戻り温度センサー２１で監視すると共に、この監視結果に基づき、温水戻り温度が所定温度以上であることを所定時間以上継続したことを判定した後にミスト噴霧を開始するための加熱殺菌シーケンスを具備している。ここにおいて所定温度は例えば７０℃、所定時間は例えば３０秒とされるが、勿論この数値に限定されるものではなく、適宜設定変更自在である。   Here, in the present invention, as shown in FIG. 5, a hot water return temperature monitoring unit 6 that executes hot water return temperature monitoring control at the start of the mist operation is provided in the control unit 4. The hot water return temperature monitoring control system monitors the hot water return temperature from the mist heat exchanger 11 with a hot water return temperature sensor 21 comprising a thermistor or the like shown in FIG. 1, and based on the monitoring result, the hot water return temperature is a predetermined temperature. A heat sterilization sequence for starting mist spraying after determining that the above has been continued for a predetermined time or more is provided. Here, the predetermined temperature is, for example, 70 ° C., and the predetermined time is, for example, 30 seconds. However, it is of course not limited to this value, and the setting can be changed as appropriate.

次に、温水戻り温度監視部６の動作を説明する。リモコン操作部１５のミスト運転スイッチを押すと制御部４にミストサウナ運転開始を指令する信号が送られる。このとき、ミスト運転停止状態が第２所定時間（例えば２４時間）未満であればただちにミスト噴霧を開始可能とする。一方、ミスト運転停止状態が第２所定時間（例えば２４時間）以上の場合は、以下の加熱殺菌シーケンスを実行する。   Next, the operation of the hot water return temperature monitoring unit 6 will be described. When the mist operation switch of the remote control operation unit 15 is pressed, a signal instructing the control unit 4 to start the mist sauna operation is sent. At this time, if the mist operation stop state is less than a second predetermined time (for example, 24 hours), mist spraying can be started immediately. On the other hand, when the mist operation stop state is longer than the second predetermined time (for example, 24 hours), the following heat sterilization sequence is executed.

先ず、温水供給用の熱源機１４（図４）に運転信号を出し、熱源機１４が暖房運転を開始する。次いで、図１に示す温風側の熱動弁８、ミスト側の水比例弁１２がそれぞれ開き、８０℃の循環温水が暖房用温水管路１６内及びミスト加熱用温水管路１９内を循環し始める。次いで、温水往き温度が６０℃以上になると、循環ファン５がＯＮとなり、浴室１３に温風を送る。一方、温水戻り温度監視制御により、ミスト用熱交換器１１を循環する温水戻り温度が温水戻り温度センサー２１で監視されており、温水戻り温度が７０℃以上になるとタイマー計時を行ない、３０秒以上経過すると、ミスト用熱交換器１１の加熱を終了する。これにより、以下の表１に基づき、ミスト用熱交換器１１を７０℃以上で５秒間以上に加熱したことが保証される。その後、浴室温度が２５℃以上になると給水手段を構成する給水電磁弁２２を開くと共にノズル開閉弁２９ａ，２９ｂの両方又は一方を開いて、ミスト噴霧を開始する。ただし前記の温水戻り温度監視制御において「７０℃以上で且つ３０秒以上経過」であるとの判定が終了しない限り、ミスト噴霧は開始されない。   First, an operation signal is issued to the heat source unit 14 (FIG. 4) for supplying hot water, and the heat source unit 14 starts the heating operation. Next, the hot air-side thermal valve 8 and the mist-side water proportional valve 12 shown in FIG. 1 are opened, and the circulating hot water at 80 ° C. circulates in the heating hot water pipe 16 and the mist heating hot water pipe 19. Begin to. Next, when the temperature of the warm water reaches 60 ° C. or higher, the circulation fan 5 is turned on and warm air is sent to the bathroom 13. On the other hand, the warm water return temperature circulating through the mist heat exchanger 11 is monitored by the warm water return temperature sensor 21 by the warm water return temperature monitoring control. When the warm water return temperature reaches 70 ° C. or more, the timer is timed for 30 seconds or more. If it passes, the heating of the heat exchanger 11 for mist will be complete | finished. This ensures that the mist heat exchanger 11 is heated at 70 ° C. or higher for 5 seconds or longer based on Table 1 below. Thereafter, when the bathroom temperature becomes 25 ° C. or higher, the water supply electromagnetic valve 22 constituting the water supply means is opened, and both or one of the nozzle opening / closing valves 29a and 29b are opened, and mist spraying is started. However, mist spraying is not started unless the determination of “70 ° C. or higher and 30 seconds or longer has elapsed” in the warm water return temperature monitoring control is completed.

以下の表１は、温水戻り温度が７０℃に達したときから５秒〜６０秒後の各部の温度データを示したものである。試験条件として給水温度を１７℃、水圧を０．２ＭＰａ、外気温を２０℃とした。   Table 1 below shows temperature data of each part 5 seconds to 60 seconds after the warm water return temperature reaches 70 ° C. As test conditions, the feed water temperature was 17 ° C., the water pressure was 0.2 MPa, and the outside air temperature was 20 ° C.

Figure 2008110021
Figure 2008110021

上記の表1によれば、ミスト用熱交換器１１からの温水戻り温度が、７０℃に到達して後、３０秒以上経過した場合に、ミスト用熱交換器１１の内面温度が７２．０℃以上で３０秒間に加熱されたこととなり、レジオネラ菌が死滅することが考えられる。   According to Table 1 above, when the warm water return temperature from the mist heat exchanger 11 reaches 70 ° C. and 30 seconds or more have elapsed, the inner surface temperature of the mist heat exchanger 11 is 72.0. It can be considered that Legionella bacteria were killed by heating at 30 ° C. or higher for 30 seconds.

しかして、ミスト噴霧装置３を長期間使用せずに、ミスト用熱交換器１１内の残水にレジオネラ菌などの雑菌が繁殖している場合であっても、ミスト運転開始時に温水戻り温度を例えば７０℃を５秒間以上にする加熱殺菌シーケンスが自動的に実行されるので、水中に７０℃で５秒間曝すと死滅するレジオネラ菌の殺菌効果が得られ、その後にミスト噴霧が開始されるので、ミスト運転開始時に殺菌を自動的に行なうことができると共に、従来のような残水の排水操作が不要な排水レス仕様となる。これにより、ミスト噴霧装置３を浴室１３に設置する際に、予備排水のための排水配管を行なう必要がなくなり、ミスト噴霧装置３の設計上の制約がなくなると共に、予備排水による無駄な水の廃棄をなくすことができ、省資源にも寄与するものである。   Therefore, even if miscellaneous bacteria such as Legionella bacteria are propagated in the residual water in the heat exchanger 11 for mist without using the mist spraying device 3 for a long time, the warm water return temperature is set at the start of the mist operation. For example, since the heat sterilization sequence of 70 ° C. for 5 seconds or more is automatically executed, the sterilization effect of Legionella dies when exposed to water at 70 ° C. for 5 seconds, and then mist spraying is started. In addition, sterilization can be automatically performed at the start of mist operation, and the drainage-free specification is unnecessary, which does not require the conventional residual water drainage operation. As a result, when installing the mist spraying device 3 in the bathroom 13, there is no need to provide drainage piping for preliminary drainage, there are no restrictions on the design of the mist spraying device 3, and wastewater is discarded by the preliminary drainage. This contributes to resource saving.

また本例では、浴室１３内に温風を供給する浴室暖房機本体２に、浴室１３内にミストサウナ用の温水をミスト状に噴霧するミスト噴霧装置３を付設したものにおいて、暖房用の熱源機１４からの温水をミスト用熱交換器１１に循環させると共に、ミスト用熱交換器１１からの温水戻り温度を監視するようにしたので、このミストサウナ機能付き浴室暖房乾燥機１においても、ミスト運転開始時に加熱殺菌効果が得られるようになる。   Further, in this example, the bathroom heater main body 2 that supplies warm air into the bathroom 13 is provided with a mist spraying device 3 that sprays hot water for mist sauna in the bathroom 13 in a mist form. Since the hot water from the machine 14 is circulated to the heat exchanger 11 for mist and the return temperature of the hot water from the heat exchanger 11 for mist is monitored, the bathroom heating dryer 1 with the mist sauna function is also equipped with a mist. A heat sterilization effect can be obtained at the start of operation.

また本例では、ミストノズル１０（１０ａ〜１０ｃ）のそれぞれの入り口側に逆止弁２４を配置しているので、ミストノズル１０の内部への雑菌の侵入を防止できるようになる。   Moreover, in this example, since the check valve 24 is arrange | positioned at each entrance side of the mist nozzle 10 (10a-10c), the penetration | invasion of a microbe to the inside of the mist nozzle 10 can be prevented now.

さらに本例では、加熱殺菌シーケンスの実行は、ミスト運転停止状態が第２所定時間である２４時間以上継続した場合のみとされ、２４時間未満の場合はレジオネラ菌が有害な量まで繁殖しないことから、温水戻り温度監視制御は実効されないため、速やかなミスト噴霧が可能となる。なお第２所定時間として２４時間未満、或いは２４時間以上であってもよい。   Furthermore, in this example, the heat sterilization sequence is executed only when the mist operation stop state continues for 24 hours or more, which is the second predetermined time, and Legionella does not propagate to a harmful amount in less than 24 hours. Since the warm water return temperature monitoring control is not effective, quick mist spraying is possible. The second predetermined time may be less than 24 hours or more than 24 hours.

本発明の一実施形態に用いるミストサウナ機能付き浴室暖房乾燥機の配管図である。It is a piping diagram of the bathroom heating dryer with a mist sauna function used for one embodiment of the present invention. 同上のミストサウナ機能付き浴室暖房乾燥機の側面断面図である。It is side surface sectional drawing of the bathroom heating dryer with a mist sauna function same as the above. 同上の暖房機本体の機器ケーシングのグリル板を取り外した状態の斜視図である。It is a perspective view of the state which removed the grill plate of the apparatus casing of the heater main body same as the above. 同上の浴室の天井部にミストサウナ機能付き浴室暖房乾燥機を設置した場合の斜視図である。It is a perspective view at the time of installing the bathroom heating dryer with a mist sauna function in the ceiling part of a bathroom same as the above. 同上の温水戻り温度監視部に関連するブロック図である。It is a block diagram relevant to the warm water return temperature monitoring part same as the above.

符号の説明Explanation of symbols

１ ミストサウナ機能付き浴室暖房乾燥機
２ 暖房機本体
３ ミスト噴霧装置
５ 循環ファン
６ 温水戻り温度監視部
７ 暖房用熱交換器
１０ ミストノズル
１１ ミスト用熱交換器
１３ 浴室
１４ 熱源機
１９ ミスト加熱用温水管路
２０ ミスト用給水管路
２１ 温水戻り温度センサー
２４ 逆止弁 DESCRIPTION OF SYMBOLS 1 Bathroom heating dryer with mist sauna function 2 Heating machine main body 3 Mist spraying device 5 Circulating fan 6 Hot water return temperature monitoring part 7 Heating heat exchanger 10 Mist nozzle 11 Heat exchanger for mist 13 Bathroom 14 Heat source machine 19 For mist heating Hot water pipe 20 Water supply pipe for mist 21 Hot water return temperature sensor 24 Check valve

Claims (6)

浴室内にミストサウナ用の水を噴霧するミストノズルと、ミストノズルに水を供給するミスト用給水管路と、ミスト用給水管路に配置されてミストノズルへの水の供給を行なう給水手段と、ミストノズルに供給される水を熱源機からの温水により加熱するミスト用熱交換器とを備えたミスト噴霧装置であって、ミスト運転開始時に前記ミスト用熱交換器からの温水戻り温度を監視し、この監視結果に基づき、温水戻り温度が所定温度以上であることを所定時間以上継続したことを判定した後にミスト噴霧を開始するように温水戻り温度監視制御を実行する温水戻り温度監視部を備えることを特徴とするミスト噴霧装置。   A mist nozzle that sprays water for mist sauna in the bathroom, a mist water supply line that supplies water to the mist nozzle, and a water supply means that is disposed in the mist water supply line and that supplies water to the mist nozzle A mist spraying device comprising a mist heat exchanger for heating water supplied to the mist nozzle with hot water from a heat source device, and monitoring the return temperature of the hot water from the mist heat exchanger at the start of mist operation Then, based on this monitoring result, a hot water return temperature monitoring unit for executing the hot water return temperature monitoring control so as to start mist spraying after determining that the hot water return temperature is equal to or higher than a predetermined temperature has been continued for a predetermined time or longer. A mist spraying device comprising: 浴室内に温風を供給する暖房機本体が付設され、暖房機本体は、循環ファンと、循環ファンからの風を加熱する暖房用熱交換器と、暖房用熱交換器を加熱するための温水を供給する熱源機と、熱源機からの温水を前記ミスト用熱交換器に循環させるためのミスト加熱用温水管路とを備え、前記ミスト用熱交換器から戻される循環温水の温度を前記温水戻り温度監視部にて監視することを特徴とする請求項１に記載のミスト噴霧装置。   A main body of the heater for supplying warm air into the bathroom is attached. The main body of the heater includes a circulation fan, a heat exchanger for heating that heats the air from the circulation fan, and hot water for heating the heat exchanger for heating. A mist heating hot water pipe for circulating hot water from the heat source machine to the mist heat exchanger, and the temperature of the circulating hot water returned from the mist heat exchanger is set to the hot water The mist spraying device according to claim 1, wherein monitoring is performed by a return temperature monitoring unit. 前記温水戻り温度監視部は、温水戻り温度が少なくとも７０℃以上を少なくとも３０秒以上継続したことを判定した後にミスト噴霧を開始することを特徴とする請求項１又は２に記載のミスト噴霧装置。   The mist spraying device according to claim 1 or 2, wherein the warm water return temperature monitoring unit starts mist spraying after determining that the warm water return temperature has continued at least 70 ° C or more for at least 30 seconds. 前記ミストノズルの入り口側に逆止弁を配置したことを特徴とする請求項１乃至３のいずれかに記載のミスト噴霧装置。   The mist spraying device according to any one of claims 1 to 3, wherein a check valve is disposed on an inlet side of the mist nozzle. 前記温水戻り温度監視部は、ミスト運転停止状態が第２所定時間以上継続した場合のみミスト運転開始時に温水戻り温度監視制御を実行し、ミスト運転停止状態が第２所定時間未満の場合はミスト運転開始時に温水戻り温度監視制御を実行せずにミスト噴霧を開始可能とすることを特徴とする請求項１乃至４のいずれかに記載のミスト噴霧装置。   The warm water return temperature monitoring unit executes the warm water return temperature monitoring control at the start of the mist operation only when the mist operation stop state continues for the second predetermined time or more, and when the mist operation stop state is less than the second predetermined time, the mist operation is performed. The mist spraying device according to any one of claims 1 to 4, wherein the mist spraying can be started without executing the hot water return temperature monitoring control at the start. 前記第２所定時間が２４時間であることを特徴とする請求項５に記載のミスト噴霧装置。   The mist spraying device according to claim 5, wherein the second predetermined time is 24 hours.
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