JP2004257605A - Bathroom ventilation, heating, and drying apparatus - Google Patents

Bathroom ventilation, heating, and drying apparatus Download PDF

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Publication number
JP2004257605A
JP2004257605A JP2003046910A JP2003046910A JP2004257605A JP 2004257605 A JP2004257605 A JP 2004257605A JP 2003046910 A JP2003046910 A JP 2003046910A JP 2003046910 A JP2003046910 A JP 2003046910A JP 2004257605 A JP2004257605 A JP 2004257605A
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Prior art keywords
ventilation
bathroom
air
heating
opening
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JP2003046910A
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Japanese (ja)
Inventor
Kazuhiro Haraga
一博 原賀
Hiroyuki Usui
宏之 臼井
Hiroyuki Seki
裕之 関
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Toto Ltd
東陶機器株式会社
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Priority to JP2003046910A priority Critical patent/JP2004257605A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To properly control the air amount for ventilating each room according to various operation modes while securing the air amount for ventilation necessary for the entire part of a dwelling house in a multiple room ventilation type bathroom ventilation, heating, and drying apparatus. <P>SOLUTION: A heating and drying district chamber 21 circulatingly supplying warm air in a bathroom chamber 2 and a ventilation district chamber 27 ventilating a bathroom 2, a washroom 3, and a toilet 4 are independently formed, and opening-adjustable air amount control dampers 33 and 36 are fitted to a vent port 32 from the bathroom chamber 2 and the connection part of a toilet suction duct 9. For example, when the toilet is forcibly ventilated, a control part 40 decreases the opening of the damper 33 and increases the opening of the damper 36 while controlling the rotational speed of a ventilation motor 28 so that the discharged air amount is always kept generally constant for ventilating operation. By this, an increase in the sucked amount of air from the washroom 3 can be suppressed while the sucked amount of air from the toilet 4 is increased. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、浴室を含む多室の同時換気を行い、且つ、浴室を暖房・乾燥する機能を併せ持つ浴室換気暖房乾燥装置に関する。
【0002】
【従来の技術】
近年、新築の戸建て住宅や集合住宅では浴室換気暖房乾燥装置が標準的な住宅機器設備として採用されるようになってきている(例えば、非特許文献1参照)。この装置は、浴室のみの1室、浴室とトイレとの2室、或いは、浴室、洗面所及びトイレの3室の換気を行う換気機能と、浴室内に暖気を供給して浴室内の温度を上昇させる暖房・乾燥機能とを併せ持つ。こうした暖房・乾燥機能を用いれば、浴室を洗濯物乾燥室として利用することができるので天候を気にせずに洗濯物の乾燥を行えるとともに、浴室内自体の湿気を除去してカビの発生を効果的に防止することができる。
【0003】
もちろん、浴室内の暖房・乾燥時に同時に浴室内の換気を行うと、浴室内に送給された暖気が屋外へ排出されてしまって暖房効率が悪くなる。そこで、こうした多室型の換気暖房乾燥装置において、浴室内の暖房運転時に浴室の換気を停止し、暖気が屋外へ排出されることを防止できるようにした装置が従来知られている。
【0004】
例えば特許文献1に記載の装置では、トイレ及び洗面所から空気を吸引して屋外へ排出する換気ユニットと、浴室から空気を吸引してヒータで加熱した後に浴室内へ送出する暖房乾燥ユニットとを隣接して配置するとともに、両者を連通する連通口を設け、その連通口に開閉自在のダンパを設置した構成を備える。この構成によれば、ダンパを開放した状態で換気運転を行えば、トイレ、洗面所内の空気のみならず、暖房乾燥ユニット及び連通口を通して浴室内の空気も換気ユニットにより吸引されるから、浴室、トイレ及び洗面所の3室換気が達成される。一方、浴室暖房運転時にダンパを閉じれば、暖房乾燥ユニットと換気ユニットは遮断されるので、浴室内の空気は換気ユニットにより吸引されることがなく、暖気が屋外へ排出されることがない。
【0005】
しかしながら、上記従来技術では、略水平に設けた軸を中心にして蝶動自在に設けたダンパ本体を電磁石で吸着することで閉鎖させ、電磁石の吸着を解除したときに風圧によってダンパ本体が開放するようにしている。そのため、ダンパの開度が不安定であるという問題があった。こうした問題を解決するために、特許文献2に記載の装置では、ダンパ本体の略中心位置に軸を設け、該軸をモータで回転駆動することによりダンパ本体の回転角度、つまりはダンパの開度を任意に調整できるようにしている。
【0006】
【特許文献1】
特開平10−73294号公報
【特許文献2】
特開平2001−201256号公報
【非特許文献1】
“浴室換気暖房乾燥機「三乾王」”,[Online],東陶機器株式会社,[平成15年2月3日検索],インターネット〈URL: http://www.toto.co.jp/products/bath/b00008/index.htm〉
【0007】
【発明が解決しようとする課題】
上記のような従来の浴室換気暖房乾燥装置では、浴室暖房運転時に浴室換気を完全に停止することが可能であるが、実際には浴室暖房運転時にも、或る程度の浴室換気を行うことが好ましい場合が多い。例えば、一般に入浴時に浴室暖房を行うことが多いが、このときにはお湯から水蒸気が立ち上るため、浴室換気を完全に停止してしまうと浴室の天井や壁面で結露して水滴が生じ易い。また、浴室内で洗濯物の乾燥を行うために浴室暖房乾燥機能を利用する場合には、洗濯物から蒸発した水蒸気を迅速に排出するために換気を行う必要がある。
【0008】
上記従来の浴室換気暖房乾燥装置による構成では、ダンパを少しでも開放した状態で暖房ユニットと換気ユニットとを同時に動作させると、暖房ユニットから直接的に空気が換気ユニットへ吸引されるため、浴室内へ供給される前の暖気の一部が浴室へ供給されること無しにそのまま排出されてしまい、暖房が非効率的であるととともに電力消費量が多くなる。
【0009】
また、上記のようにダンパの開度を変更した場合には、そのダンパの開口を通した流路抵抗が変化する。従って、トイレや洗面所側の吸気風路の流路抵抗との比率が変化するわけであるが、浴室、トイレ、洗面所を含む全体の流路抵抗も変化する。それによって換気の総風量が変化してしまうと、こうした換気装置によって住戸内全体の換気を行っている場合に、一部の部屋での換気が悪くなって室内環境の悪化等を招く可能性がある。
【0010】
特に最近、住宅の高気密化、高断熱化が進んでおり、結露の発生やダニ等によるアレルギーの増加などの換気の不足を一因とする様々な問題が発生している。また、壁紙等の内装材から発生するホルムアルデヒド等の化学物質を原因とするシックハウス症も増加しており、こうした問題の解決にも住戸内の換気が一層重要になっており、法律や各種公的規制によっても常時換気の義務付けや必要換気風量の設定が為されるような状況になっている。こうしたことに対しても上記のような従来の装置では充分に対応することが難しい。
【0011】
本発明はこのような課題に鑑みて成されたものであり、その主たる目的とするところは、如何なる運転を実行した場合であっても快適性を損なうことがなく、必要な換気風量を確保することができる浴室換気暖房乾燥装置を提供することにある。
【0012】
【課題を解決するための手段、及び効果】
上記課題を解決するために成された第1発明は、住戸内で浴室と浴室以外の少なくとも他の1室とから空気を吸引して屋外へ排出するための換気ファンを内部に備えた換気区画室と、前記浴室内に暖気を循環的に送給するための循環ファン及び加熱手段を内部に備えた暖房区画室とを独立に具備する浴室換気暖房乾燥装置において、
a)浴室内から前記換気区画室に至る吸気風路中にあって、開度が複数段階又は無段階に調整し得る第1風路開閉手段と、
b)前記換気ファンによる屋外への排気風量を略一定に維持するべくそのファンモータの回転を制御する第1制御手段と、
c)前記排気風量の略一定制御の下に、前記換気ファンにより換気される浴室又は他の部屋の換気風量変更の指示に応じて前記第1風路開閉手段の開度を制御する第2制御手段と、
を備えることを特徴としている。
【0013】
この第1発明に係る浴室換気暖房乾燥装置では、第1制御手段の制御の下に、浴室と少なくとも他の1室とから吸引されて屋外へ排気される排気風量がほぼ一定に維持されるように、ファンモータの回転が制御される。そのため、吸気側の風路で流路抵抗が変化した場合でも、排気風量つまり換気総風量はほぼ一定に保たれる。一方、第2制御手段は、浴室や他の部屋の換気風量変更の指示に応じて、第1風路開閉手段の開度を適宜制御する。
【0014】
例えば第1発明の一実施態様として、第2制御手段は、浴室内を乾燥させる乾燥モードにおいて、乾燥運転の後半期間に前半期間よりも浴室換気風量を減少させる指示を受け、その後半期間には前半期間よりも開度を小さくするべく第1風路開閉手段を制御する構成とすることができる。
【0015】
これによれば、住戸全体の換気風量を略一定に維持しながら、乾燥運転の後半期間に浴室からの吸気風量を絞ることができる。また、換気区画室と暖房区画室とが分離されていて浴室内から直接的に空気を吸引しているため、暖房区画室内で生成された暖気が確実に浴室内に供給される一方、浴室内の湿った空気を吸引して換気することができる。これにより、浴室内の暖房や乾燥を効率的に行うことができるとともに、例えば洗濯物の乾燥を行う場合には洗濯物をふんわりと仕上げることができるという効果も奏する。
【0016】
また、第1発明の別の態様として、上記少なくとも他の1室がトイレ又は洗面所である場合に、第2制御手段は、そのトイレ又は洗面所の換気風量変更の指示に応じ、該換気風量増加指示時には開度を小さくするべく第1風路開閉手段を制御する構成とすることができる。
【0017】
これによれば、住戸全体の換気風量を略一定に維持しながら、必要に応じてトイレや洗面所の換気を強状態にして、不所望の臭気や湿気を迅速に屋外へ排出することができる。また、トイレや洗面所の換気風量を増減するために浴室側の吸気風路に設けた第1風路開閉手段を利用しているので、風量調節の構成が煩雑になることを回避することができる。
【0018】
また、第1発明に係る浴室換気暖房乾燥装置では、前記少なくとも他の1室内から前記換気区画室に至る吸気風路中にも、開度が複数段階又は無段階に調整し得る第2風路開閉手段を設け、前記第2制御手段は、浴室又は他の部屋の換気風量変更の指示に応じて前記第1及び第2風路開閉手段の一方又は両方の開度を制御する構成とすることができる。
【0019】
この構成によれば、第1及び第2なる2つ風路開閉手段の開度を適宜に制御することにより、他の部屋の吸気風量への影響をできる限り軽減しつつ、目的とする部屋の吸気風量を充分に増加又は減少させることができる。従って、例えば他の部屋に居る人が肌寒くなる等の快適性を損なうことを軽減できる、或いは、暖房中である部屋の暖気を急速に屋外へ排出しまって暖房効率を大きく低下させることを防止することができる。
【0020】
また上記課題を解決するために成された第2発明は、住戸内で浴室を含むn(2以上)室にそれぞれ設けられた吸気口から空気を吸引して屋外へ排出するための換気ファンを内部に備えた換気区画室と、前記浴室内に暖気を循環的に送給するための循環ファン及び加熱手段を内部に備えた暖房区画室とを具備する浴室換気暖房換気装置において、
a)前記n室の吸気口から前記換気区画室に至るn個の吸気風路のうち、最大n−1個の吸気風路中に設けられ、開度が複数段階又は無段階に調整し得る風路開閉手段と、
b)前記換気ファンによる屋外への排気風量を略一定に維持するべくそのファンモータの回転を制御する第1制御手段と、
c)前記排気風量の略一定制御の下に、前記換気ファンにより換気される前記n室の換気風量変更の指示に応じて前記最大n−1個の風路開閉手段の開度をそれぞれ制御する第2制御手段と、
を備えることを特徴としている。
【0021】
この第2発明に係る浴室換気暖房換気装置によれば、住戸全体の換気風量を略一定に保ちながらn室の各換気風量を適宜に制御する際に、n個の吸気風路のうち最大n−1個の吸気風路中に風量調節手段を設ければよい。従って、全ての吸気風路中に風量調節手段を設ける必要はなく、構成を簡素化してコストの低減に寄与する。また、n室の各換気風量の配分とは関係なく住戸全体の換気風量を充分に確保することができるので、上記n室以外の各部屋の換気も充分に行い、快適な住環境を居住者に提供することが可能となる。
【0022】
【発明の実施の形態】
以下、第1及び第2発明の一実施例による浴室換気暖房乾燥装置について、図1〜図5を参照しながら説明する。
【0023】
図1は本実施例の浴室換気暖房乾燥装置を設置した住戸1の概略縦断面図、図3は本装置を集合住宅の住戸に設置した場合の概略平面図である。
住戸1内には、水廻り設備を配置した部屋として浴室2、洗面所3、トイレ4が配置され、それ以外に台所やリビングルームなどが配置されている。装置本体20は浴室2の天井裏に設置されており、屋外に開口した排気口6と排気ダクト5により連通し、洗面所3内に開口した洗面所吸気グリル8と洗面所吸気ダクト7により連通し、トイレ4内に開口したトイレ吸気グリル10とトイレ吸気ダクト9により連通している。洗面所3の壁面には操作用のリモコン11が取り付けられ、リモコン11と装置本体20とは通信線12で接続されている。
【0024】
図2は本実施例の浴室換気暖房乾燥装置の装置本体20の構成を示す概略断面図である。装置本体20は、浴室2の暖房・乾燥を行うために、暖房乾燥区画室21内に循環モータ22、循環ファン23及びヒータ24を備え、この暖房乾燥区画室21は吸気口25及び吹出口26を通して浴室2内と連通している。一方、換気を行うために、換気区画室27内に換気モータ28及び換気ファン29を備え、この換気区画室27には排気ダクト5、洗面所吸気ダクト7、及びトイレ吸気ダクト9が接続されている。これら吸気ダクト7、9の接続口にはそれぞれ換気区画室27内方にのみ開放する逆流防止ダンパ34、35が設けられている。
【0025】
また、吸気口31を通して浴室2と連通する連結区画室30は、風量調節ダンパ33が設置された通気口32を介して換気区画室27と連通している。循環モータ22、ヒータ24、換気モータ28、及び風量調節ダンパ33はマイクロコンピュータを含む制御部40によりその動作が電気的に制御される。
【0026】
図4は風量調節ダンパ33の概略構成図である。扉体33aはその略中央に取り付けられた(図3では紙面に直交する方向に延在している)軸33bを中心に回動自在であって、軸33bの回動は制御部40からのパルス信号によって駆動されるステップモータ33cにより制御される。従って、制御部40はステップモータ33cに送出するパルス信号の数を制御することにより、扉体33aの角度、つまり開度(又は開口面積)を制御することができる。なお、風量調節ダンパ33の開度は任意に調節可能であるが、本実施例では、開度「零」(閉鎖)、開度「小」、開度「中」、及び開度「大」(全開)の4段階にのみ開度の設定が可能であるものとする。
【0027】
この制御部40の制御の下に行われる、本実施例の浴室換気暖房乾燥装置の特徴的な動作の一例として、浴室内で洗濯物等の乾燥を行う場合の乾燥モードについて、図5の制御フローチャートを参照して説明する。
【0028】
本装置では、基本的に常時換気を行っている。常時換気運転では、制御部40は換気モータ28を駆動し、換気ファン29の出口側、つまり排気ダクト5を経た排気風量がほぼ一定になるように換気モータ28の回転速度を制御している(ステップS10)。このとき風量調節ダンパ33は開度「中」としておくものとする。この状態では、換気ファン29の回転により、逆流防止ダンパ34、35が開いて洗面所吸気ダクト7及びトイレ吸気ダクト9から換気区画室27内に空気が吸い込まれるとともに、吸気口31を経て浴室2からも空気が吸い込まれ、これらは合流して排気ダクト5へ送り出される。これによって、浴室2、洗面所3及びトイレ4の3室換気が達成され、図3に描いたように、その3室を介して住戸1内の全部屋の換気を行うことができる。
【0029】
こうした状態下で乾燥モードが開始されると、制御部40は循環モータ22を作動させるとともにヒータ24に通電を行う(ステップS11)。また、ステップモータ33cに所定個数のパルス信号を送出して風量調節ダンパ33の開度を「中」から「大」に変更する(ステップS12)。それにより、循環ファン23が回転し、吸気口25から浴室2内の空気を暖房乾燥区画室21内に吸い込む。この空気はヒータ24のフィンを通過する際に熱交換によって加熱され、暖気となって吹出口26から浴室2内へ送り出される。
【0030】
一方、風量調節ダンパ33の開度が増加したことにより、浴室2内から換気区画室27へ吸引される吸気風量は増加する。但し、上述したように換気モータ28は排気風量が一定になるように制御されているため、浴室2からの吸気風量の増加分は洗面所3及びトイレ4からの吸気風量の減少によって補われる。このように、乾燥モードの開始当初、風量調節ダンパ33は全開状態に維持されるため、浴室2内に供給された暖気によって洗濯物から水蒸気が吐き出されると、その水蒸気を含む湿った空気は迅速に吸気口31→連結区画室30→通気口32→換気区画室27へ吸引され、洗面所3及びトイレ4から吸引された空気と共に排気ダクト5へ送られる。実際上、乾燥の初期には、浴室2内へ供給された熱量の多くは洗濯物から水蒸気を蒸発させるために使用されるため、浴室2内の温度上昇はそれほど大きくはない。
【0031】
上記のような乾燥運転が進行して乾燥開始から所定時間が経過すると、ステップS13からS14へ進み、制御部40はステップモータ33cに所定個数のパルス信号を送出して風量調節ダンパ33の開度を「大」から「小」に変更する。これにより、浴室2内から換気区画室27へ吸引される吸気風量は減少する。但し、上述したように換気モータ28は排気風量が一定になるように制御されているため、浴室2からの吸気風量の減少分は洗面所3及びトイレ4からの吸気風量の増加によって補われる。従って、住戸1内全体の換気風量は充分に確保され、良好な室内環境を維持することができる。
【0032】
上記のように浴室2からの吸気風量が減少した時点では洗濯物からの水蒸気の発生量も少なくなっており、浴室2内に供給された熱量のうち、温度上昇に利用される割合が増加する。また、吸気風量が減少したことによって、温度上昇した空気が屋外へ排出されにくくなるので、効率良く浴室2内の温度を上昇させることができる。それによって、洗濯物に残る湿り気をほぼ完全に蒸発させるとともに、洗濯物のふんわり感を向上させることができる。そして、所定の乾燥時間が経過したならば、ステップS15からS16へ進み、循環モータ22の動作を停止するとともにヒータ24への通電を停止し、乾燥運転を終了する。それと同時又はその後に、制御部40はステップモータ33cに所定個数のパルス信号を送出して風量調節ダンパ33の開度を「小」から「中」に戻し、常時換気を継続する(ステップS17)。
【0033】
以上のように本実施例による浴室換気暖房乾燥装置では、乾燥モードの運転の前半期間には風量調節ダンパ33の開度を小さくすることによって、浴室2内からの吸気風量の絞りを達成し、結果として効率的で且つ仕上がりの良好な洗濯物乾燥を遂行することができる。また、そうした浴室2からの吸気風量の絞りを行いつつも、住戸1内全体の換気風量を略一定に維持し、快適な居住性を実現することができる。
【0034】
次に、本実施例の浴室換気暖房乾燥装置の特徴的な動作の他の例として、トイレ使用時等の動作について、図6の制御フローチャートを参照して説明する。
【0035】
上記ステップS10と同様のS20の処理により、浴室2、洗面所3及びトイレ4の3室換気による常時換気を行っているとき、制御部40はトイレ換気強の指示の有無を繰り返し判定する(ステップS21)。ここで、トイレ換気強の指示は、例えばトイレ換気の強弱の切換スイッチにおいてトイレ換気強が選択された場合や、トイレ照明スイッチのオン操作によってトイレが使用中であることが高い確度で推定できる状態になったときに為されるようにすればよい。
【0036】
トイレ換気強が指示されるとステップS21からS22へ進み、制御部40はステップモータ33cに所定個数のパルス信号を送出して風量調節ダンパ33の開度を「中」から「小」に変更する。これにより、浴室2内から換気区画室27へ吸引される吸気風量は減少するが、換気モータ28は排気風量が一定になるように制御されているため、浴室2からの吸気風量が減少する代わりに、洗面所3及びトイレ4からの吸気風量が増加する。これによってトイレ4からの吸気風量を増加させることができるとともに、住戸1内全体の換気風量も充分に確保されて良好な室内環境を維持することができる。
【0037】
そしてトイレ換気強解除の指示があるまでその状態を維持し、解除指示があったならばステップS23からS24へ進み、制御部40はステップモータ33cに所定個数のパルス信号を送出して風量調節ダンパ33の開度を「小」から「中」に戻し、常時換気を継続する。
【0038】
以上のように本実施例による浴室換気暖房乾燥装置では、トイレ4の換気を強にしたい場合に風量調節ダンパ33の開度を小さくすることによって、浴室2内からの吸気風量を減少させ、その結果、トイレ4からの吸気風量を増加させることができる。もちろん、トイレ4ではなく洗面所3の換気を強にしたい場合にも同様の方法で換気風量を増加できることは明らかである。
【0039】
上記実施例の構成では、浴室2からの吸気風量を調節するための風量調節ダンパ33の開度を制御することにより、トイレ4又は洗面所3の換気風量を増加させることが可能であるが、例えばトイレ4の換気風量を増加させたい場合でも同時に洗面所3の換気風量も増加してしまう。一般に、換気風量が増加すると隣室との連通口(ガラリなど)を介してその隣室からの流れ込む空気量が増加し、当該部屋内に居る人が肌寒く感じることがある。例えばトイレ4を使用するべくトイレ換気強を指示したときに、他の人が洗面所3で風呂に入る準備をしているような場合、洗面所3に居る人は急に肌寒く感じて不快な思いをすることが考えられる。
【0040】
そこで、こうした問題を解消するため、本発明の他の実施例として図7に示すような構成に変形することができる。図7において図2と同一構成要素については同一符号を付して説明を省略する。特徴的な点は、換気区画室27へのトイレ吸気ダクト9の接続部分に、先の実施例において設けられていた逆流防止ダンパ35に代えて、制御部40により開閉動作が制御されるトイレ側風量調節ダンパ36を備えることである。このトイレ側風量調節ダンパ36の構成は浴室側の風量調節ダンパ33と同様である。
【0041】
この構成による浴室換気暖房乾燥装置では、浴室2、洗面所3及びトイレ4のいずれか1つ以上の部屋の換気風量の増加又は減少が指示されたときに、制御部40は2つの風量調節ダンパ33、36の開度をそれぞれ独立に且つ適当に調整することにより、使用者(居住者)が最も快適であるような風量設定を実現している。具体的な制御の一例として上記例と同様にトイレ換気を強にしたい場合について、図8の制御フローチャートを参照して説明する。
【0042】
浴室2、洗面所3及びトイレ4の3室換気による常時換気運転時には、浴室側及びトイレ側の風量調節ダンパ33、36の開度はいずれも「中」に設定する(ステップS30)。制御部40はトイレ換気強の指示の有無を繰り返し判定し(ステップS31)、トイレ換気強が指示されるとステップS32へ進み、制御部40は浴室側風量調節ダンパ33の開度を「中」から「小」に変更する一方、トイレ側風量調節ダンパ36の開度を「中」から「大」に変更する。これにより、浴室側風量調節ダンパ33を通過する流路の流路抵抗が増加する一方、トイレ側風量調節ダンパ36を通過する流路(トイレ吸気ダクト9)の流路抵抗は減少する。そのため、排気風量一定の制御の下に、浴室2からの吸気風量の減少分はその殆どがトイレ4からの吸気風量の増加によって補われる。従って、トイレ換気強時に洗面所3からの吸気風量が急に増加することを軽減することができる。
【0043】
もちろん、トイレ換気以外に、上述したように乾燥モード時の換気風量の増減や、浴室2や洗面所3の換気強などに対しても、2つの風量調節ダンパの開度の制御によって、住戸1内全体の換気風量を一定に維持しつつ、各部屋からの換気風量をより適切に定めることができる。
【0044】
上記実施例はいずれも3室換気の浴室換気暖房乾燥装置であるが、本発明は3室換気に限るものではない。こうした換気装置によって住戸1内全体の換気を行おうとする場合、例えば或る1室からの換気を停止したり換気風量をごく小さく絞ったりしたときに、他の2室からの換気のみでは充分な換気風量を確保することが困難な場合があり得る。そうした場合には、図9に示すように、住戸1内の他の部屋、廊下、天井裏などの空間13に向けて開口する第4吸気グリル15を設置し、その吸気グリル15と装置本体20の換気区画室27(図9では図示せず)とを接続する第4吸気ダクト14を配設するとよい。第4吸気グリル15は住戸1内のいずれの場所に設けてもよいが、吸気ダクト14の圧損はできるだけ小さいほうが好ましいから、その点では第4吸気グリル15を装置本体20に近い場所に設けるほうがよい。
【0045】
図9の構成によれば、住戸1内から装置本体20への最大吸気風量が図1の構成よりも増加するため、1室又は複数室からの吸気を停止したり吸気風量を大きく減らしたりしても、例えば24時間換気のような常時換気運転に必要な換気風量を確保し易くなり、上記のように風量調節ダンパによる風量調節の自由度も増加する。それによって、居住者の快適性を損なうことなく、適切な換気風量調節が行い易くなる。
【0046】
さらにまた、図9の構成と同様に4室換気を可能とした他の実施例による構成の概略を図10に、このときの装置本体20の構成を図11に示す。この例では、住戸1内の天井裏16の空間に開口するように天井裏吸気グリル(第4吸気グリル)18を設け、この天井裏吸気グリル18と装置本体20とを天井裏吸気ダクト(第4吸気ダクト)17で接続している。但し、図10では理解を容易にするために天井裏吸気ダクト17を装置本体20から突設しているが、実際には装置本体20は天井裏16の空間に面していることが多いので、天井裏吸気ダクト17を延ばす必要がない場合が多い。
【0047】
図11に示すように、この装置本体20では、浴室側風量調節ダンパ33のほかに、洗面所吸気ダクト7及び天井裏吸気ダクト17の接続箇所にそれぞれ制御部40による開度の制御が可能な洗面所側風量調節ダンパ37、天井裏側風量調節ダンパ38が設けられている。即ち、浴室2、洗面所3、トイレ4、及び天井裏16からの4系統の吸気風路中の3系統の吸気風路に風量調節ダンパ37を設置し、これにより、それら3系統の吸気風路を介しての吸気風量のみならず、風量調節ダンパを設置していないトイレ吸気ダクト9を介しての吸気風量も制御するようにしている。
【0048】
この構成における換気風量制御の一例について説明する。常時換気の通常運転時には、制御部40により、浴室側風量調節ダンパ33の開度は「中」、洗面所側風量調節ダンパ37の開度は「中」、天井裏側風量調節ダンパ38の開度は「小」に設定される。天井裏16からの吸気風量を小さくしているのは、通常、天井裏16においては大風量の換気を行う必要性が低いからである。
【0049】
上記常時換気中に浴室暖房運転が指示され、且つ洗面所換気の強弱切換スイッチにおいて洗面所換気弱が選択された(又は浴室暖房運転と連動して洗面所換気を弱に自動設定する)場合を考える。この場合、制御部40の制御の下に、循環ファン23が駆動されるとともにヒータ24に通電がなされ、吹出口26から暖気が浴室2内へと供給される。一方、暖房中である浴室2内の暖気を逃がさないように浴室側風量調節ダンパ33は閉鎖され、浴室2に隣接する洗面所3からの吸気風量も減少させるべく洗面所側風量調節ダンパ37の開度は「中」から「小」に変更される。
【0050】
しかしながら、制御部40は排気風量を略一定に維持するように換気モータ28の回転を制御しているので、そのままの状態ではトイレ4からの吸気風量が急激に増加する。それにより、トイレ吸気グリル8での吸い込み音が異常に大きくなってトイレ4内に居る人が不安を感じたり、冬場ではドアの隙間等からの冷気の侵入により肌寒さを感じてしまう(いわゆるコールドドラフト)。そこで、上述したように浴室側及び洗面所側風量調節ダンパ33、37の開度を変更すると同時又はそれに先立って、天井裏側風量調節ダンパ38の開度を「小」から「大」に変更しておく。それにより、天井裏16からの吸気風量が急激に増加し、トイレ4からの吸気風量の増加の度合を軽減することができ、トイレ吸気グリル10での吸い込み音も抑制することができる。
【0051】
また、浴室暖房運転時に洗面所3からの吸気風量を減らせば、他の部屋(浴室2以外)から洗面所3へ流入する風量が減少するため、特に冬場において、入浴の準備又は入浴後の身支度等のために洗面所3に居る人に対するコールドドラフトを緩和することができる。更にまた、浴室2の換気が停止された状態において洗面所3で大きな風量で換気が行われると、浴室2内雰囲気が負圧になり浴室2内の湿気が洗面所3へ侵入し易くなるが、洗面所3の換気を弱めることによりこうした湿気の侵入も軽減できる。
【0052】
なお、上記実施例はいずれも本発明の一例であって、上記で言及した以外の点についても、本発明の趣旨の範囲で適宜変更、修正、追加を行っても本発明に包含されることは当然である。
【図面の簡単な説明】
【図1】第1及び第2発明の一実施例による浴室換気暖房乾燥装置を設置した住戸の概略縦断面図。
【図2】本実施例の浴室換気暖房乾燥装置の装置本体の構成を示す概略断面図。
【図3】本実施例の浴室換気暖房乾燥装置を集合住宅の住戸に設置した場合の概略平面図。
【図4】本実施例の浴室換気暖房乾燥装置における風量調節ダンパの概略構成図。
【図5】本実施例の浴室換気暖房乾燥装置における特徴的な動作の一例を示す制御フローチャート。
【図6】本実施例の浴室換気暖房乾燥装置における特徴的な動作の他の例を示す制御フローチャート。
【図7】他の実施例による浴室換気暖房乾燥装置の装置本体の構成を示す概略断面図。
【図8】他の実施例による浴室換気暖房乾燥装置における特徴的な動作の一例を示す制御フローチャート。
【図9】更に他の実施例による浴室換気暖房乾燥装置を設置した住戸の概略縦断面図。
【図10】更に他の実施例による浴室換気暖房乾燥装置を設置した住戸の概略縦断面図。
【図11】図10の実施例における装置本体の構成を示す概略断面図。
【符号の説明】
1…住戸
2…浴室
3…洗面所
4…トイレ
5…排気ダクト
6…排気口
7…洗面所吸気ダクト
8…洗面所吸気グリル
9…トイレ吸気ダクト
10…トイレ吸気グリル
11…リモコン
12…通信線
13…住戸内空間
14…第4吸気ダクト
15…第4吸気グリル
16…天井裏
17…天井裏吸気ダクト
18…天井裏吸気グリル
20…装置本体
21…暖房乾燥区画室
22…循環モータ
23…循環ファン
24…ヒータ
25…吸気口
26…吹出口
27…換気区画室
28…換気モータ
29…換気ファン
30…連結区画室
31…吸気口
32…通気口
33…(浴室側)風量調節ダンパ
33a…扉体
33b…軸
33c…ステップモータ
34…逆流防止ダンパ
36…トイレ側風量調節ダンパ
37…洗面所側風量調節ダンパ
38…天井裏側風量調節ダンパ
40…制御部
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a bathroom ventilation heating / drying device that simultaneously ventilates multiple rooms including a bathroom, and has a function of heating and drying the bathroom.
[0002]
[Prior art]
In recent years, bathroom ventilating, heating, and drying devices have been adopted as standard housing equipment in newly built detached houses and apartment houses (for example, see Non-Patent Document 1). This device has a ventilation function for ventilating one room only in a bathroom, two rooms in a bathroom and a toilet, or three rooms in a bathroom, a washroom and a toilet, and supplies warm air to the bathroom to control the temperature in the bathroom. It has both heating and drying functions to raise. With such a heating and drying function, the bathroom can be used as a laundry drying room, so that laundry can be dried without worrying about the weather, and the moisture in the bathroom itself is removed to reduce mold generation. Can be prevented.
[0003]
Of course, if ventilation in the bathroom is performed simultaneously during heating and drying of the bathroom, warm air sent into the bathroom is exhausted to the outside, resulting in poor heating efficiency. Therefore, in such a multi-room type ventilation heating / drying apparatus, an apparatus has been conventionally known in which the ventilation of the bathroom is stopped during the heating operation of the bathroom so that the warm air can be prevented from being discharged outside.
[0004]
For example, in the device described in Patent Literature 1, a ventilation unit that sucks air from a toilet and a washroom and discharges the air outside, and a heating and drying unit that sucks air from a bathroom and heats it with a heater, and then sends the air into the bathroom. A communication port is provided adjacent to and provided with a communication port for communicating the two, and an opening and closing damper is provided in the communication port. According to this configuration, if the ventilation operation is performed with the damper opened, not only the air in the toilet and the toilet, but also the air in the bathroom through the heating and drying unit and the communication port is sucked by the ventilation unit. Toilet and washroom ventilation is achieved. On the other hand, if the damper is closed during the bathroom heating operation, the heating / drying unit and the ventilation unit are shut off, so that the air in the bathroom is not sucked by the ventilation unit and the warm air is not discharged to the outside.
[0005]
However, in the above-mentioned prior art, the damper body provided so as to be freely swingable about an axis provided substantially horizontally is closed by being attracted by an electromagnet, and the damper body is opened by wind pressure when the attraction of the electromagnet is released. Like that. Therefore, there is a problem that the opening of the damper is unstable. In order to solve such a problem, in the device described in Patent Document 2, a shaft is provided at a substantially central position of the damper body, and the shaft is driven to rotate by a motor, so that the rotation angle of the damper body, that is, the opening of the damper, Can be adjusted arbitrarily.
[0006]
[Patent Document 1]
JP-A-10-73294
[Patent Document 2]
JP-A-2001-201256
[Non-patent document 1]
"Bathroom ventilation heating dryer" Sannooh "", [Online], Totoki Kiki Co., Ltd., [searched February 3, 2003], Internet <URL: http://www.toto.co.jp/ products / bath / b00008 / index.htm>
[0007]
[Problems to be solved by the invention]
In the conventional bathroom ventilation heating / drying device as described above, it is possible to completely stop the bathroom ventilation during the bathroom heating operation, but in practice, it is also possible to perform a certain degree of bathroom ventilation during the bathroom heating operation. Often preferred. For example, in general, bathroom heating is generally performed when taking a bath. At this time, steam rises from hot water, and if the ventilation of the bathroom is completely stopped, water droplets are likely to be formed on the ceiling or wall surface of the bathroom. In addition, when the bathroom heating / drying function is used to dry laundry in a bathroom, it is necessary to perform ventilation in order to quickly discharge water vapor evaporated from the laundry.
[0008]
In the configuration of the above-described conventional bathroom ventilation heating / drying apparatus, when the heating unit and the ventilation unit are simultaneously operated with the damper being opened even a little, air is directly sucked from the heating unit to the ventilation unit. Some of the warm air before being supplied to the bathroom is directly discharged without being supplied to the bathroom, so that heating is inefficient and power consumption increases.
[0009]
Further, when the opening degree of the damper is changed as described above, the flow path resistance through the opening of the damper changes. Therefore, although the ratio with respect to the flow path resistance of the intake air passage on the side of the toilet or the washroom changes, the flow path resistance of the whole including the bathroom, the toilet, and the washroom also changes. As a result, if the total airflow of ventilation changes, if such a ventilation system is used to ventilate the entire dwelling unit, the ventilation in some rooms may be poor and the indoor environment may be degraded. is there.
[0010]
In particular, recently, houses have been highly airtight and highly insulated, and various problems have been caused by lack of ventilation such as dew condensation and increase of allergies due to mites. In addition, sick house disease caused by chemical substances such as formaldehyde generated from interior materials such as wallpaper is increasing, and ventilation of dwelling units is becoming more important for solving such problems. Even under regulations, there is a situation where mandatory ventilation and setting of required ventilation air volume are made. It is difficult for the above-mentioned conventional apparatus to sufficiently cope with such a situation.
[0011]
The present invention has been made in view of such a problem, and a main object thereof is to ensure a necessary ventilation air volume without impairing comfort even when performing any operation. It is an object of the present invention to provide a bathroom ventilation heating / drying device.
[0012]
[Means for Solving the Problems and Effects]
According to a first aspect of the present invention, there is provided a ventilation compartment having a ventilation fan for sucking air from a bathroom and at least another room other than the bathroom in a dwelling unit and discharging the air to the outside. Room, and a bathroom ventilation heating and drying device independently including a heating compartment having a circulation fan and a heating means therein for cyclically supplying warm air to the bathroom,
a) a first air path opening / closing means which is located in an intake air path from a bathroom to the ventilation compartment and whose degree of opening can be adjusted in multiple steps or steplessly;
b) first control means for controlling the rotation of a fan motor of the ventilation fan so as to maintain a substantially constant exhaust air volume to the outdoors;
c) a second control for controlling an opening degree of the first air passage opening / closing means in accordance with an instruction to change a ventilation air volume of a bathroom or another room ventilated by the ventilation fan under substantially constant control of the exhaust air volume. Means,
It is characterized by having.
[0013]
In the bathroom ventilation heating / drying apparatus according to the first invention, under the control of the first control means, the amount of exhaust air sucked from the bathroom and at least one other chamber and exhausted to the outside is maintained substantially constant. Then, the rotation of the fan motor is controlled. Therefore, even when the flow path resistance changes in the air path on the intake side, the exhaust air volume, that is, the total ventilation air volume, is kept substantially constant. On the other hand, the second control means appropriately controls the degree of opening of the first air passage opening / closing means in accordance with an instruction to change the ventilation air volume in the bathroom or another room.
[0014]
For example, as one embodiment of the first invention, in the drying mode for drying the bathroom, the second control means receives an instruction to reduce the bathroom ventilation air volume in the latter half of the drying operation from the first half, and in the latter half of the drying operation, The first air path opening / closing means may be controlled to make the opening smaller than in the first half period.
[0015]
According to this, it is possible to reduce the amount of intake air from the bathroom during the latter half of the drying operation while maintaining the ventilation air flow of the entire dwelling unit substantially constant. In addition, since the ventilation compartment and the heating compartment are separated and air is directly sucked from the bathroom, warm air generated in the heating compartment is reliably supplied to the bathroom, It is possible to ventilate by sucking wet air. Accordingly, the heating and drying of the bathroom can be efficiently performed, and for example, when the laundry is dried, the laundry can be finished softly.
[0016]
In another aspect of the first invention, when the at least one other room is a toilet or a lavatory, the second control means responds to an instruction to change the ventilation air volume of the toilet or the lavatory, and At the time of the increase instruction, the first air path opening / closing means may be controlled to reduce the opening degree.
[0017]
According to this, while maintaining the ventilation air volume of the entire dwelling unit substantially constant, the ventilation of the toilet and the washroom can be strengthened as necessary, and the undesired odor and moisture can be quickly discharged to the outside. . In addition, since the first air path opening / closing means provided in the bathroom-side air intake air path is used to increase or decrease the ventilation air volume in the toilet or the lavatory, it is possible to avoid a complicated configuration of the air volume adjustment. it can.
[0018]
Also, in the bathroom ventilation heating / drying device according to the first invention, the second air path whose opening degree can be adjusted in a plurality of steps or steplessly even in the air intake path from the at least one other room to the ventilation compartment. Opening / closing means is provided, and the second control means controls the opening degree of one or both of the first and second air passage opening / closing means in accordance with an instruction to change a ventilation air volume in a bathroom or another room. Can be.
[0019]
According to this configuration, by appropriately controlling the opening degrees of the first and second two air path opening / closing means, the influence on the intake air volume of another room is reduced as much as possible, and The intake air volume can be sufficiently increased or decreased. Therefore, for example, it is possible to reduce a loss of comfort such as a person in another room becoming chilly, or to prevent a sudden discharge of warm air from a room being heated to the outside to greatly reduce the heating efficiency. be able to.
[0020]
Further, a second invention made to solve the above-mentioned problem provides a ventilation fan for sucking air from an air inlet provided in each of n (two or more) rooms including a bathroom in a dwelling unit and discharging the air to the outside. In a bathroom ventilation heating / ventilation apparatus comprising a ventilation compartment provided therein, and a heating compartment provided therein with a circulation fan and a heating means for supplying warm air to the bathroom cyclically,
a) Of the n intake air passages from the intake port of the n chamber to the ventilation compartment, provided in a maximum of n-1 intake air passages, and the degree of opening can be adjusted in multiple steps or steplessly. Air path opening and closing means,
b) first control means for controlling the rotation of a fan motor of the ventilation fan so as to maintain a substantially constant exhaust air volume to the outdoors;
c) Under substantially constant control of the exhaust air volume, the opening degree of each of the n-1 maximum air passage opening / closing means is controlled in accordance with an instruction to change the ventilation air volume of the n room ventilated by the ventilation fan. Second control means;
It is characterized by having.
[0021]
According to the bathroom ventilation / heating / ventilating apparatus according to the second aspect of the present invention, when appropriately controlling each ventilation air volume of the n rooms while keeping the ventilation air volume of the entire dwelling unit substantially constant, at most n of the n intake air paths are required. It is sufficient to provide an air volume adjusting means in one intake air path. Therefore, it is not necessary to provide air volume adjusting means in all the intake air paths, which simplifies the configuration and contributes to cost reduction. In addition, since the ventilation air volume of the entire dwelling unit can be sufficiently ensured irrespective of the distribution of the ventilation air volume of the n rooms, the ventilation of each room other than the n rooms is sufficiently performed, and a comfortable living environment is provided. Can be provided.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a bathroom ventilation heating / drying apparatus according to one embodiment of the first and second inventions will be described with reference to FIGS.
[0023]
FIG. 1 is a schematic vertical sectional view of a dwelling unit 1 provided with a bathroom ventilation heating / drying apparatus of the present embodiment, and FIG. 3 is a schematic plan view of the dwelling unit 1 installed in an apartment house.
In the dwelling unit 1, a bathroom 2, a washroom 3, and a toilet 4 are arranged as rooms in which water-supply facilities are arranged, and in addition, a kitchen, a living room, and the like are arranged. The apparatus main body 20 is installed behind the ceiling of the bathroom 2, communicates with an exhaust port 6 opened to the outside by an exhaust duct 5, and communicates by a washroom intake grill 8 opened in the washroom 3 and a washroom intake duct 7. The toilet air intake grille 10 opened in the toilet 4 and the toilet air intake duct 9 communicate with each other. A remote controller 11 for operation is attached to the wall surface of the lavatory 3, and the remote controller 11 and the apparatus main body 20 are connected by a communication line 12.
[0024]
FIG. 2 is a schematic sectional view showing the configuration of the apparatus main body 20 of the bathroom ventilation heating / drying apparatus of the present embodiment. The apparatus main body 20 includes a circulation motor 22, a circulation fan 23, and a heater 24 in a heating / drying compartment 21 for heating / drying the bathroom 2. The heating / drying compartment 21 has an inlet 25 and an outlet 26. Through the bathroom 2. On the other hand, in order to perform ventilation, a ventilation motor 28 and a ventilation fan 29 are provided in the ventilation compartment 27, and the exhaust duct 5, the washroom intake duct 7, and the toilet intake duct 9 are connected to the ventilation compartment 27. I have. Backflow prevention dampers 34 and 35 that open only to the inside of the ventilation compartment 27 are provided at the connection ports of the intake ducts 7 and 9, respectively.
[0025]
Further, the connection compartment 30 communicating with the bathroom 2 through the air inlet 31 communicates with the ventilation compartment 27 via a vent 32 in which an air volume adjustment damper 33 is installed. The operations of the circulation motor 22, the heater 24, the ventilation motor 28, and the air volume adjustment damper 33 are electrically controlled by a control unit 40 including a microcomputer.
[0026]
FIG. 4 is a schematic configuration diagram of the air volume adjustment damper 33. The door body 33a is rotatable around a shaft 33b (extending in a direction perpendicular to the paper surface in FIG. 3) which is attached substantially at the center of the door body 33a. It is controlled by a step motor 33c driven by a pulse signal. Therefore, the control unit 40 can control the angle of the door body 33a, that is, the opening degree (or opening area) by controlling the number of pulse signals sent to the step motor 33c. Although the opening of the air volume adjusting damper 33 can be arbitrarily adjusted, in this embodiment, the opening is “zero” (closed), the opening is “small”, the opening is “medium”, and the opening is “large”. It is assumed that the opening degree can be set only in four stages (full open).
[0027]
As an example of a characteristic operation of the bathroom ventilation heating / drying apparatus according to the present embodiment, which is performed under the control of the control unit 40, a drying mode in a case where laundry or the like is dried in a bathroom will be described with reference to FIG. This will be described with reference to a flowchart.
[0028]
In this device, ventilation is always performed basically. In the constant ventilation operation, the control unit 40 drives the ventilation motor 28 and controls the rotation speed of the ventilation motor 28 so that the amount of exhaust air passing through the outlet side of the ventilation fan 29, that is, through the exhaust duct 5, becomes substantially constant ( Step S10). At this time, the air volume adjustment damper 33 is set at the opening degree “medium”. In this state, the backflow prevention dampers 34 and 35 are opened by the rotation of the ventilation fan 29, and air is sucked into the ventilation compartment 27 from the lavatory suction duct 7 and the toilet suction duct 9, and the bathroom 2 passes through the suction port 31. The air is also sucked in from these, and they are merged and sent out to the exhaust duct 5. As a result, three rooms of the bathroom 2, the washroom 3, and the toilet 4 are ventilated, and all the rooms in the dwelling unit 1 can be ventilated through the three rooms as illustrated in FIG.
[0029]
When the drying mode is started in such a state, the control unit 40 activates the circulation motor 22 and energizes the heater 24 (step S11). Further, a predetermined number of pulse signals are sent to the step motor 33c to change the opening of the air volume adjusting damper 33 from "medium" to "large" (step S12). Thereby, the circulation fan 23 rotates, and the air in the bathroom 2 is drawn into the heating / drying compartment 21 from the intake port 25. This air is heated by heat exchange when passing through the fins of the heater 24, becomes warm air, and is sent out of the outlet 26 into the bathroom 2.
[0030]
On the other hand, as the opening degree of the air volume adjustment damper 33 increases, the amount of intake air suctioned from the bathroom 2 into the ventilation compartment 27 increases. However, as described above, since the ventilation motor 28 is controlled so that the exhaust air volume is constant, an increase in the intake air volume from the bathroom 2 is compensated by a decrease in the intake air volume from the washroom 3 and the toilet 4. As described above, at the beginning of the drying mode, the air volume adjustment damper 33 is maintained in the fully opened state. Therefore, when steam is discharged from the laundry by the warm air supplied into the bathroom 2, the moist air containing the steam is quickly discharged. Then, the air is sucked into the intake compartment 31 → the connecting compartment 30 → the vent 32 → the ventilation compartment 27 and sent to the exhaust duct 5 together with the air sucked from the washroom 3 and the toilet 4. In practice, at the beginning of drying, much of the heat supplied into the bathroom 2 is used to evaporate water vapor from the laundry, so that the temperature rise in the bathroom 2 is not so large.
[0031]
When a predetermined time has elapsed from the start of drying after the above-described drying operation has progressed, the process proceeds from step S13 to step S14, where the control unit 40 sends a predetermined number of pulse signals to the step motor 33c to open the air volume adjustment damper 33. Is changed from "large" to "small". Thereby, the amount of intake air sucked from the bathroom 2 into the ventilation compartment 27 decreases. However, as described above, since the ventilation motor 28 is controlled so that the amount of exhaust air is constant, the decrease in the amount of intake air from the bathroom 2 is compensated for by the increase in the amount of intake air from the washroom 3 and the toilet 4. Therefore, the ventilation air volume in the entire dwelling unit 1 is sufficiently ensured, and a favorable indoor environment can be maintained.
[0032]
As described above, when the amount of air blown from the bathroom 2 is reduced, the amount of water vapor generated from the laundry is also reduced, and the ratio of the amount of heat supplied to the bathroom 2 used for increasing the temperature increases. . Further, since the intake air volume is reduced, it is difficult for the air whose temperature has risen to be discharged to the outside, so that the temperature in the bathroom 2 can be increased efficiently. Thereby, the moisture remaining in the laundry can be almost completely evaporated, and the softness of the laundry can be improved. When the predetermined drying time has elapsed, the process proceeds from step S15 to S16, in which the operation of the circulation motor 22 is stopped, the power supply to the heater 24 is stopped, and the drying operation ends. At the same time or after that, the control unit 40 sends a predetermined number of pulse signals to the step motor 33c to return the opening of the air volume adjustment damper 33 from "small" to "medium", and to continue ventilation at all times (step S17). .
[0033]
As described above, in the bathroom ventilation heating / drying apparatus according to the present embodiment, by reducing the opening of the air volume adjustment damper 33 in the first half period of the operation in the drying mode, the amount of intake air from the bathroom 2 is reduced, As a result, it is possible to perform efficient and good-quality laundry drying. In addition, while reducing the amount of intake air from the bathroom 2, the ventilation air volume of the entire dwelling unit 1 can be maintained substantially constant, so that comfortable livability can be realized.
[0034]
Next, as another example of the characteristic operation of the bathroom ventilation heating / drying apparatus of the present embodiment, an operation at the time of using a toilet will be described with reference to a control flowchart of FIG.
[0035]
By the process of S20 similar to the above-described step S10, when the constant ventilation is performed by the three-room ventilation of the bathroom 2, the washroom 3, and the toilet 4, the control unit 40 repeatedly determines whether or not there is an instruction for strong toilet ventilation (step S10). S21). Here, the instruction of the toilet ventilation intensity is, for example, when the toilet ventilation intensity is selected in the toilet ventilation intensity changeover switch, or when the toilet illumination switch is turned on to estimate that the toilet is in use with high accuracy. What should be done when it becomes.
[0036]
When the toilet ventilation is instructed, the process proceeds from step S21 to S22, and the control unit 40 sends a predetermined number of pulse signals to the step motor 33c to change the opening degree of the air volume adjustment damper 33 from “medium” to “small”. . As a result, the amount of intake air sucked from the bathroom 2 to the ventilation compartment 27 decreases, but the ventilation motor 28 is controlled so that the amount of exhaust air is constant, so that the amount of intake air from the bathroom 2 decreases instead. In addition, the amount of intake air from the toilet 3 and the toilet 4 increases. As a result, the amount of air blown from the toilet 4 can be increased, and the amount of ventilation air in the entire dwelling unit 1 can be sufficiently ensured to maintain a favorable indoor environment.
[0037]
Then, the state is maintained until there is an instruction to release toilet ventilation, and if there is an instruction to release, the process proceeds from step S23 to step S24, where the control unit 40 sends a predetermined number of pulse signals to the step motor 33c to send the air volume adjustment damper. The opening degree of 33 is returned from “small” to “medium”, and the ventilation is constantly continued.
[0038]
As described above, in the bathroom ventilation heating / drying apparatus according to the present embodiment, when it is desired to increase the ventilation of the toilet 4, the opening degree of the air volume adjustment damper 33 is reduced to reduce the intake air volume from the interior of the bathroom 2. As a result, the amount of air blown from the toilet 4 can be increased. Of course, it is apparent that the same method can be used to increase the amount of ventilation air when it is desired to increase the ventilation of the toilet 3 instead of the toilet 4.
[0039]
In the configuration of the above embodiment, it is possible to increase the ventilation air volume of the toilet 4 or the washroom 3 by controlling the opening of the air volume adjustment damper 33 for adjusting the air volume from the bathroom 2. For example, even if it is desired to increase the ventilation air volume of the toilet 4, the ventilation air volume of the toilet 3 also increases at the same time. In general, when the amount of ventilation air increases, the amount of air flowing from the adjacent room through a communication port (such as a rag) with the adjacent room increases, and people in the room may feel chilly. For example, if another person is preparing to take a bath in the toilet 3 when the toilet ventilation is instructed to use the toilet 4, the person in the toilet 3 suddenly feels chilly and uncomfortable. It is possible to think.
[0040]
Therefore, in order to solve such a problem, another embodiment of the present invention can be modified to a structure as shown in FIG. 7, the same components as those in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted. A characteristic point is that, instead of the backflow prevention damper 35 provided in the previous embodiment, at the connection portion of the toilet intake duct 9 to the ventilation compartment 27, the opening / closing operation of the toilet 40 is controlled by the control unit 40. That is, an air volume adjusting damper 36 is provided. The configuration of the toilet-side air volume adjustment damper 36 is the same as that of the bathroom-side air volume adjustment damper 33.
[0041]
In the bathroom ventilation / heating / drying apparatus having this configuration, when an increase or decrease in the ventilation air volume in any one or more of the bathroom 2, the washroom 3, and the toilet 4 is instructed, the control unit 40 controls the two air volume adjustment dampers. By independently and appropriately adjusting the opening degrees of the 33 and 36, the air volume setting that makes the user (resident) most comfortable is realized. As an example of specific control, a case where it is desired to increase toilet ventilation similarly to the above example will be described with reference to a control flowchart of FIG.
[0042]
During the regular ventilation operation by three-room ventilation of the bathroom 2, the washroom 3, and the toilet 4, the openings of the air volume adjustment dampers 33, 36 on the bathroom side and the toilet side are both set to "medium" (step S30). The control unit 40 repeatedly determines whether or not there is an instruction for the strong toilet ventilation (step S31). When the strong toilet ventilation is instructed, the process proceeds to step S32, and the control unit 40 sets the opening of the bathroom-side air volume adjustment damper 33 to “medium”. Is changed from “medium” to “large” while the opening degree of the toilet-side air volume adjustment damper 36 is changed from “medium” to “large”. Thereby, while the flow path resistance of the flow path passing through the bathroom-side air flow adjustment damper 33 increases, the flow path resistance of the flow path (toilet intake duct 9) passing through the toilet-side air flow adjustment damper 36 decreases. Therefore, under the control of the constant exhaust air flow, the decrease in the intake air flow from the bathroom 2 is mostly compensated for by the increase in the intake air flow from the toilet 4. Therefore, it is possible to reduce a sudden increase in the amount of intake air from the washroom 3 when toilet ventilation is high.
[0043]
Of course, in addition to the toilet ventilation, the dwelling unit 1 is controlled by controlling the opening degree of the two air volume adjustment dampers also for the increase and decrease of the ventilation air volume in the drying mode as described above, and for the ventilation intensity of the bathroom 2 and the washroom 3. The ventilation airflow from each room can be more appropriately determined while keeping the ventilation airflow of the entire interior constant.
[0044]
Although each of the above embodiments is a three-room ventilation bathroom ventilation heating / drying apparatus, the present invention is not limited to three-room ventilation. When the ventilation of the entire dwelling unit 1 is to be performed by such a ventilation device, for example, when the ventilation from one room is stopped or the ventilation air volume is reduced to a very small value, the ventilation from the other two rooms alone is sufficient. It may be difficult to secure the ventilation air volume. In such a case, as shown in FIG. 9, a fourth intake grill 15 opening toward a space 13 such as another room in the dwelling unit 1, a corridor, or a space above a ceiling is installed, and the intake grill 15 and the apparatus main body 20 are installed. A fourth intake duct 14 may be provided to connect the ventilation compartment 27 (not shown in FIG. 9). Although the fourth intake grill 15 may be provided at any place in the dwelling unit 1, it is preferable that the pressure loss of the intake duct 14 be as small as possible. Good.
[0045]
According to the configuration of FIG. 9, the maximum intake air flow from the interior of the dwelling unit 1 to the apparatus main body 20 is increased as compared with the configuration of FIG. 1, so that intake from one or more rooms is stopped or the intake air flow is significantly reduced. However, for example, it becomes easy to secure the ventilation air volume required for the constant ventilation operation such as 24-hour ventilation, and the degree of freedom of the air volume adjustment by the air volume adjustment damper also increases as described above. Thereby, appropriate ventilation air volume adjustment can be easily performed without impairing the occupant's comfort.
[0046]
Further, FIG. 10 schematically shows a configuration according to another embodiment in which four-chamber ventilation is enabled similarly to the configuration of FIG. 9, and FIG. 11 shows a configuration of the apparatus main body 20 at this time. In this example, a ceiling air intake grille (fourth air intake grille) 18 is provided so as to open into the space of the ceiling space 16 inside the dwelling unit 1, and the ceiling air intake grille 18 and the apparatus main body 20 are connected to the ceiling air intake duct (the fourth air intake duct). (4 intake ducts) 17. However, in FIG. 10, the air intake duct 17 above the ceiling is protruded from the apparatus main body 20 for easy understanding, but since the apparatus main body 20 actually faces the space of the ceiling 16 in many cases, In many cases, it is not necessary to extend the air intake duct 17 above the ceiling.
[0047]
As shown in FIG. 11, in this apparatus main body 20, in addition to the bathroom-side air volume adjustment damper 33, the control unit 40 can control the opening degree at the connection points of the lavatory intake duct 7 and the ceiling intake duct 17, respectively. A lavatory side air volume adjustment damper 37 and a ceiling back air volume adjustment damper 38 are provided. That is, the air volume adjustment dampers 37 are installed in three of the four intake air passages from the bathroom 2, the washroom 3, the toilet 4, and the ceiling 16, and thereby the three intake air passages are provided. Not only the intake air volume through the road but also the intake air volume through the toilet intake duct 9 without the air volume adjustment damper is controlled.
[0048]
An example of ventilation air volume control in this configuration will be described. During the normal operation of the normal ventilation, the opening of the bathroom-side air volume adjustment damper 33 is "medium", the opening of the lavatory-side air volume adjustment damper 37 is "medium", and the opening of the ceiling back air volume adjustment damper 38 is controlled by the control unit 40. Is set to “small”. The reason why the amount of intake air from the ceiling 16 is reduced is that it is usually less necessary to ventilate a large amount of air in the ceiling 16.
[0049]
The case where the bathroom heating operation is instructed during the above-mentioned constant ventilation and the toilet ventilation weakness is selected by the toilet ventilation intensity changeover switch (or the toilet ventilation is automatically set to weak in conjunction with the bathroom heating operation) Think. In this case, the circulation fan 23 is driven and the heater 24 is energized under the control of the control unit 40, and warm air is supplied from the outlet 26 into the bathroom 2. On the other hand, the bathroom-side air volume adjustment damper 33 is closed so as not to release the warm air in the bathroom 2 being heated, and the bathroom-side air volume adjustment damper 37 is closed to reduce the intake air volume from the washroom 3 adjacent to the bathroom 2. The opening is changed from “medium” to “small”.
[0050]
However, since the control unit 40 controls the rotation of the ventilation motor 28 so as to maintain the exhaust air volume substantially constant, the intake air volume from the toilet 4 rapidly increases in the state as it is. As a result, the suction sound in the toilet intake grill 8 becomes abnormally large, and the person in the toilet 4 feels uneasy, and in the winter, it feels chilly due to intrusion of cool air from a gap in the door (so-called cold). draft). Therefore, as described above, at the same time as or before the opening of the bathroom-side and lavatory-side air volume adjustment dampers 33 and 37 is changed, the opening of the ceiling-side air volume adjustment damper 38 is changed from “small” to “large”. Keep it. As a result, the amount of intake air from the ceiling 16 increases rapidly, the degree of increase in the amount of intake air from the toilet 4 can be reduced, and the sound of suction from the toilet intake grill 10 can be suppressed.
[0051]
In addition, if the amount of intake air from the washroom 3 is reduced during the bathroom heating operation, the amount of air flowing into the washroom 3 from other rooms (other than the bathroom 2) is reduced, and particularly in winter, preparation for bathing or dressing after bathing is performed. For example, a cold draft for a person in the toilet 3 can be reduced. Furthermore, if ventilation is performed with a large air volume in the washroom 3 in a state where the ventilation of the bathroom 2 is stopped, the atmosphere in the bathroom 2 becomes a negative pressure, and moisture in the bathroom 2 easily enters the washroom 3. By reducing the ventilation of the lavatory 3, such intrusion of moisture can be reduced.
[0052]
It should be noted that each of the above embodiments is an example of the present invention, and that points other than those described above are included in the present invention even if appropriately changed, modified, or added within the scope of the spirit of the present invention. Is natural.
[Brief description of the drawings]
FIG. 1 is a schematic longitudinal sectional view of a dwelling unit provided with a bathroom ventilation heating / drying device according to one embodiment of the first and second inventions.
FIG. 2 is a schematic sectional view showing a configuration of an apparatus main body of the bathroom ventilation heating / drying apparatus of the present embodiment.
FIG. 3 is a schematic plan view when the bathroom ventilation heating / drying apparatus of the present embodiment is installed in a dwelling unit of an apartment house.
FIG. 4 is a schematic configuration diagram of an air volume adjustment damper in the bathroom ventilation heating / drying apparatus of the present embodiment.
FIG. 5 is a control flowchart showing an example of a characteristic operation in the bathroom ventilation heating / drying apparatus of the present embodiment.
FIG. 6 is a control flowchart showing another example of the characteristic operation of the bathroom ventilation heating / drying apparatus of the present embodiment.
FIG. 7 is a schematic sectional view showing a configuration of an apparatus main body of a bathroom ventilation heating / drying apparatus according to another embodiment.
FIG. 8 is a control flowchart showing an example of a characteristic operation in a bathroom ventilation heating / drying apparatus according to another embodiment.
FIG. 9 is a schematic longitudinal sectional view of a dwelling unit equipped with a bathroom ventilation heating / drying device according to still another embodiment.
FIG. 10 is a schematic longitudinal sectional view of a dwelling unit provided with a bathroom ventilation heating / drying device according to still another embodiment.
FIG. 11 is a schematic sectional view showing the configuration of the apparatus main body in the embodiment of FIG.
[Explanation of symbols]
1: Dwelling unit
2. Bathroom
3. Washroom
4 ... Toilet
5. Exhaust duct
6 ... Exhaust port
7 ... Toilet air intake duct
8 ... Toilet intake grill
9… Toilet intake duct
10. Toilet intake grill
11 Remote control
12 Communication line
13… Dwelling unit space
14: Fourth intake duct
15: Fourth intake grill
16 ... behind the ceiling
17… Intake duct under the ceiling
18 ... Intake ceiling grille
20: Device body
21… Heating and drying compartment
22 ... Circulation motor
23… Circulation fan
24 ... heater
25 ... intake port
26 ... Air outlet
27… Ventilation compartment
28 ... Ventilation motor
29 ... Ventilation fan
30 ... Connecting compartment
31 ... intake port
32 ... vent
33… (Bathroom side) Air volume adjustment damper
33a ... door
33b ... shaft
33c ... Step motor
34 ... Backflow prevention damper
36 ... Toilet side air volume adjustment damper
37 ... Air volume adjustment damper on the washroom side
38 ... Airflow adjustment damper behind ceiling
40 ... Control unit

Claims (5)

  1. 住戸内で浴室と浴室以外の少なくとも他の1室とから空気を吸引して屋外へ排出するための換気ファンを内部に備えた換気区画室と、前記浴室内に暖気を循環的に送給するための循環ファン及び加熱手段を内部に備えた暖房区画室とを独立に具備する浴室換気暖房換気装置において、
    a)浴室内から前記換気区画室に至る吸気風路中にあって、開度が複数段階又は無段階に調整し得る第1風路開閉手段と、
    b)前記換気ファンによる屋外への排気風量を略一定に維持するべくそのファンモータの回転を制御する第1制御手段と、
    c)前記排気風量の略一定制御の下に、前記換気ファンにより換気される浴室又は他の部屋の換気風量変更の指示に応じて前記第1風路開閉手段の開度を制御する第2制御手段と、
    を備えることを特徴とする浴室換気暖房乾燥装置。
    A ventilation compartment having a ventilation fan therein for sucking air from a bathroom and at least one other room other than the bathroom in the dwelling unit and discharging the air to the outside, and supplying warm air to the bathroom cyclically. In a bathroom ventilation heating and ventilation device independently including a heating compartment having a circulation fan and a heating means for the inside,
    a) a first air path opening / closing means which is located in an intake air path from a bathroom to the ventilation compartment and whose degree of opening can be adjusted in multiple steps or steplessly;
    b) first control means for controlling the rotation of a fan motor of the ventilation fan so as to maintain a substantially constant exhaust air volume to the outdoors;
    c) a second control for controlling an opening degree of the first air passage opening / closing means in accordance with an instruction to change a ventilation air volume of a bathroom or another room ventilated by the ventilation fan under substantially constant control of the exhaust air volume. Means,
    A ventilation, heating and drying device for a bathroom, comprising:
  2. 前記第2制御手段は、浴室内を乾燥させる乾燥モードにおいて、乾燥運転の後半期間に前半期間よりも浴室換気風量を減少させる指示を受け、その後半期間には前半期間よりも開度を小さくするべく前記第1風路開閉手段を制御することを特徴とする請求項1に記載の浴室換気暖房乾燥装置。In the drying mode for drying the bathroom, the second control means receives an instruction to reduce the amount of bathroom ventilation air in the latter half of the drying operation from the first half, and in the latter half, makes the opening smaller than in the first half. The bathroom ventilation heating / drying apparatus according to claim 1, wherein the first air path opening / closing means is controlled to control the air flow.
  3. 前記少なくとも他の1室はトイレ又は洗面所であって、前記第2制御手段は、そのトイレ又は洗面所の換気風量変更の指示に応じ、該換気風量増加指示時には開度を小さくするべく前記第1風路開閉手段を制御することを特徴とする請求項1に記載の浴室換気暖房乾燥装置。The at least one other room is a toilet or a lavatory, and the second control means responds to an instruction to change the ventilation air volume of the toilet or the lavatory, and the second control means reduces the opening when the ventilation air volume increase instruction is issued. The bathroom ventilation heating / drying apparatus according to claim 1, wherein one air path opening / closing means is controlled.
  4. 前記少なくとも他の1室内から前記換気区画室に至る吸気風路中にも、開度が複数段階又は無段階に調整し得る第2風路開閉手段を設け、前記第2制御手段は、浴室又は他の部屋の換気風量変更の指示に応じて前記第1及び第2風路開閉手段の一方又は両方の開度を制御することを特徴とする請求項1〜3のいずれかに記載の浴室換気暖房乾燥装置。A second air path opening / closing means whose opening degree can be adjusted in multiple steps or steplessly is also provided in an intake air path from the at least one other room to the ventilation compartment, and the second control means comprises a bathroom or The bathroom ventilation according to any one of claims 1 to 3, wherein the degree of opening of one or both of the first and second air passage opening / closing means is controlled in accordance with an instruction to change the amount of ventilation air in another room. Heating and drying equipment.
  5. 住戸内で浴室を含むn(2以上)室にそれぞれ設けられた吸気口から空気を吸引して屋外へ排出するための換気ファンを内部に備えた換気区画室と、前記浴室内に暖気を循環的に送給するための循環ファン及び加熱手段を内部に備えた暖房区画室とを具備する浴室換気暖房換気装置において、
    a)前記n室の吸気口から前記換気区画室に至るn個の吸気風路のうち、最大n−1個の吸気風路中に設けられ、開度が複数段階又は無段階に調整し得る風路開閉手段と、
    b)前記換気ファンによる屋外への排気風量を略一定に維持するべくそのファンモータの回転を制御する第1制御手段と、
    c)前記排気風量の略一定制御の下に、前記換気ファンにより換気される前記n室の換気風量変更の指示に応じて前記最大n−1個の風路開閉手段の開度をそれぞれ制御する第2制御手段と、
    を備えることを特徴とする浴室換気暖房乾燥装置。
    A ventilation compartment having a ventilation fan for sucking air from an air inlet provided in each of n (two or more) rooms including a bathroom in a dwelling unit and discharging the air to the outside, and circulating warm air in the bathroom In a bathroom ventilation heating ventilation ventilator comprising a circulation fan and a heating compartment having a heating means therein for the purpose of feeding
    a) Of the n intake air passages from the intake port of the n chamber to the ventilation compartment, provided in a maximum of n-1 intake air passages, and the degree of opening can be adjusted in multiple steps or steplessly. Air path opening and closing means,
    b) first control means for controlling the rotation of a fan motor of the ventilation fan so as to maintain a substantially constant exhaust air volume to the outdoors;
    c) Under substantially constant control of the exhaust air volume, the opening degree of each of the n-1 maximum air passage opening / closing means is controlled in accordance with an instruction to change the ventilation air volume of the n room ventilated by the ventilation fan. Second control means;
    A ventilation, heating and drying device for a bathroom, comprising:
JP2003046910A 2003-02-25 2003-02-25 Bathroom ventilation, heating, and drying apparatus Pending JP2004257605A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1633034A2 (en) 2004-09-03 2006-03-08 Minebea Matsushita Motor Co., Ltd. Vibrating motor and portable terminal apparatus using same
JP2007163001A (en) * 2005-12-13 2007-06-28 Sekisui Home Techno Kk Mist sauna equipment and bathroom provided with mist sauna equipment
JP2010038427A (en) * 2008-08-04 2010-02-18 Panasonic Corp Bathroom ventilator-dryer
JP2015111030A (en) * 2013-10-29 2015-06-18 石橋 晃 Highly clean room system, highly clean work room system, highly clean gas supply system, and method for controlling cleanness of the highly clean room system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1633034A2 (en) 2004-09-03 2006-03-08 Minebea Matsushita Motor Co., Ltd. Vibrating motor and portable terminal apparatus using same
JP2007163001A (en) * 2005-12-13 2007-06-28 Sekisui Home Techno Kk Mist sauna equipment and bathroom provided with mist sauna equipment
JP2010038427A (en) * 2008-08-04 2010-02-18 Panasonic Corp Bathroom ventilator-dryer
JP2015111030A (en) * 2013-10-29 2015-06-18 石橋 晃 Highly clean room system, highly clean work room system, highly clean gas supply system, and method for controlling cleanness of the highly clean room system
JP2015111042A (en) * 2013-10-29 2015-06-18 石橋 晃 Highly clean room system, highly clean work room system, highly clean gas supply system, and method for controlling cleanness of the highly clean room system

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