JP4069632B2

JP4069632B2 - Whirlpool

Info

Publication number: JP4069632B2
Application number: JP2002018867A
Authority: JP
Inventors: 孝之池田; 紀幸迫; 克彦小田
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2002-01-28
Filing date: 2002-01-28
Publication date: 2008-04-02
Anticipated expiration: 2022-01-28
Also published as: JP2003210544A

Description

【０００１】
【発明の属する技術分野】
本発明は、異なる噴射状態で湯水を噴射する複数の運転モードを設けたジェットバスに関するものである。
【０００２】
【従来の技術】
従来、この種のジェットバスとして、浴槽の吸込部と噴射部とを連通接続する循環水路を設け、循環水路の途中にモーターによって運転され且つ浴槽内の湯水を吸込部から吸込んで噴射部から浴槽内に噴射するポンプ部を設け、噴射部から異なる噴射状態で湯水を噴射する複数の運転モードを設けたものが知られており、使用者の好みに対応した湯水の噴射状態で使用することが可能となっていた。
【０００３】
しかし上記従来のジェットバスは、入浴中の使用者の体の一部が吸込部に吸込まれ抜けなくなる等して閉塞状態となった場合や、吸込部の設けている高さまで浴槽に湯水が充分貯まっていない空状態となった場合においても、ポンプ部を運転しつづけてしまうために、吸込部の吸い込みによる浴槽での事故や、モーターの焼き付けが生じてしまう等の問題が生じていた。
【０００４】
また上記従来のジェットバスとは別に、ポンプ部を運転するモーターの回転数を固定し、運転時におけるポンプ部のモーターの回転数を検出し、検出したモーターの回転数があらかじめ設定された閉塞状態や空状態における回転数になった場合に、ポンプ部の運転を停止するポンプ制御手段を有したジェットバスが知られているが、このような従来のジェットバスは、複数の運転モードを有していないために、噴射部から異なる噴射状態で湯水を噴射することができなかった。
【０００５】
【発明が解決しようとする課題】
本発明は上記の点に鑑みてなされたものであり、その目的とするところは、噴射部から異なる噴射状態で湯水を噴射することができ、且つ閉塞運転や空運転を防止することができるジェットバスを提供することを課題とするものである。
【０００６】
【課題を解決するための手段】
上記課題を解決するために本発明に係るジェットバスは、浴槽１の吸込部２と噴射部３とを連通接続する循環水路４を設け、循環水路４の途中にモーターによって運転され且つ浴槽１内の湯水を吸込部２から吸込んで噴射部３から浴槽１内に噴射するポンプ部５を設けたジェットバスにおいて、噴射部３から異なる噴射状態で湯水を噴射する複数の運転モードを設け、これら複数の運転モードのモーターの回転数を夫々異なる回転数に設定し、モーターの回転数を検出するための回転数検出手段１７を備え、各運転モード毎に吸込部２が閉塞された場合におけるモーターの異常回転数域である閉塞運転領域と、浴槽１内に湯水が充分貯えられていない状態におけるモーターの異常回転数域である空運転領域とを設定し、設定された運転モードでのポンプ部５の運転において、回転数検出手段１７により検出されたモーターの回転数が閉塞運転領域にあることを所定閉塞運転時間判定した場合にポンプ部５の運転を停止し、且つモーターの回転数が空運転領域にあることを所定空運転時間判定した場合にポンプ部５の運転を停止するポンプ制御手段１６を設けたものであって、循環水路４内の湯水に気泡を混入するための気泡混入部１３を設け、噴射部３を浴槽１に設けた主噴射口６と副噴射口７とで構成し、主噴射口６と吸込部２との間の距離が副噴射口７と吸込部２と間の距離よりも長くなるように配設し、主噴射口６と吸込部２とを連通接続する主流路８と、副噴射口７と吸込部２とを連通接続する副流路９とで循環水路４を構成し、主流路８の主流路８と副流路９とが連通する箇所よりも下流側に主流路側ポンプ１０を設け、副流路９の主流路８と副流路９とが連通する箇所よりも下流側に副流路側ポンプ１１を設け、主流路側ポンプ１０のモーターの回転数を検出するための回転数検出手段１７を備え、該回転数検出手段１７により検出された主流路側ポンプ１０のモーターの回転数が閉塞運転領域にあることを所定閉塞運転時間連続して判定した場合に主流路側ポンプ１０と副流路側ポンプ１１との両方の運転を停止し、且つ主流路側ポンプ１０のモーターの回転数が空運転領域にあることを所定空運転時間連続して判定した場合に主流路側ポンプ１０と副流路側ポンプ１１の両方の運転を停止するように制御することを特徴とするものである。
【０００７】
上記のように複数の運転モードを設けることで、噴射部３から異なる噴射状態で湯水を噴射することができ、加えて上記のような制御を行うことで、夫々の運転モードに対応した閉塞運転領域と空運転領域とを設定することができ、確実に閉塞運転や空運転を防止することができる。また、上記のように主噴射口６と吸込部２との間の距離が副噴射口７と吸込部２と間の距離よりも長くなるように配設し、主流路側ポンプ１０のモーターの回転数を検出するための回転数検出手段１７を設けることで、吸込部２から主流路側ポンプ１０までの主流路８の長さは吸込部２から副流路側ポンプ１１までの副流路９の長さよりも長く設定することができるため、副流路側ポンプ１１に対して主流路側ポンプ１０には気泡が流れ難くなり、気泡によってモーターの回転数が乱れることがなくなり、より正確にモーターの回転数を検出することができる。
【０００８】
また請求項２記載のジェットバスは請求項１記載のジェットバスにおいて、閉塞運転領域にある主流路側ポンプ１０のモーターの回転数が所定閉塞運転時間以内に閉塞運転領域を越えて外れた場合、閉塞運転領域でカウントされた時間をカウントされなかったものと見なすことを特徴とするものである。
【０００９】
このような構成とすることで、閉塞運転領域にある主流路側ポンプ１０のモーターの回転数が所定閉塞運転時間以内に閉塞運転領域を越えて外れた場合、ポンプ部５を継続して運転することができる。
【００１０】
また請求項３記載のジェットバスは、請求項１又は２記載のジェットバスにおいて、上記閉塞運転領域と空運転領域とが重複した場合、重複した回転数域は閉塞運転領域とすることを特徴とするものである。
【００１１】
上記のように閉塞運転領域と空運転領域とが重複した回転数域を閉塞運転領域とすることで、閉塞運転を優先して防止することができる。
【００１２】
また請求項４記載のジェットバスは、請求項１〜３のいずれか１項に記載のジェットバスにおいて、任意の運転モードから異なる任意の運転モードへ切り替わった直後に判定を行わない一定期間を設けて成ることを特徴とするものである。
【００１３】
上記のように運転モードを切り替えた直後の不安定な状態にあるモーターの回転数を検出しないようにすることで、ポンプ制御手段１６が誤った判定を起こすことが少なくなる。
【００１６】
【発明の実施の形態】
以下、本発明を添付図面に示す実施形態に基づいて説明する。
【００１７】
図１に示すように本実施形態におけるジェットバスは、底部に排水口１２を設けた浴槽１を有しており、浴槽１の下部には浴槽１に開口した吸込部２が設けられている。浴槽１の吸込部２よりも高い箇所には噴射部３を設けており、噴射部３は浴槽１に向かって開口する主噴射口６及び副噴射口７とで構成され、浴槽１の対向する両側壁の一方に副噴射口７、他方に主噴射口６が設けられている。また吸込部２は副噴射口７に近い位置に設けられている。主噴射口６と吸込部２との間の距離は副噴射口７と吸込部２との間の距離よりも長くなるように配設されている。
【００１８】
主噴射口６と吸込部２とは主流路８によって連通接続されており、副噴射口７と吸込部２も副流路９によって連通接続されている。主流路８の途中と副流路９の途中とは連通接続しており、主流路８と副流路９とが連通する箇所から吸込部２までの部分は一本の流路となっている。つまり、主流路８と副流路９とが連通する箇所から吸込部２までの流路は主流路８であり、且つ副流路９であることとなる。上記主流路８と副流路９とで循環水路４を構成している。
【００１９】
またこの循環水路４の主噴射口６側の端部にあたる主流路８の主噴射口６側の端部及び副流路９の副噴射口７側の端部には気泡混入部１３を接続しており、この気泡混入部１３によって循環水路４内の湯水に気泡を混入することができるようになっている。なおこの時気泡混入部１３と主噴射口６との間の距離は気泡混入部１３と副噴射口７との間の距離よりも長くなるように設定されている。
【００２０】
一方、主流路８の主流路８と副流路９とが連通する箇所よりも主噴射口６側（下流側）の箇所には、モーターによって運転され且つ浴槽1内の湯水を吸込部２から吸込んで主噴射口６から浴槽１内に噴射する主流路側ポンプ１０が設けられており、副流路９の主流路８と副流路９とが連通する箇所よりも副噴射口７側（下流側）の箇所にも、モーターによって運転され且つ浴槽１内の湯水を吸込部２から吸込んで副噴射口７から浴槽１内に噴射する副流路側ポンプ１１が設けられている。また主流路側ポンプ１０から吸込部２までの主流路８の長さは、副流路側ポンプ１０から吸込部２までの副流路９の長さよりも長く設定されている。上記主流路側ポンプ１０と副流路側ポンプ１１とでポンプ部５を構成している。
【００２１】
ポンプ部５の主流路側ポンプ１０及び副流路側ポンプ１１には制御部１４を介して外部よりこれら主流路側ポンプ１０及び副流路側ポンプ１１の運転を操作する操作部１５が接続されている。
【００２２】
上記ジェットバスを使用する場合は、操作部１５を操作してポンプ部５の主流路側ポンプ１０と副流路側ポンプ１１との両方を駆動させる。ポンプ部５を運転状態にすると、浴槽１に貯えられた湯水は吸込部２から循環水路４内に吸い込まれ、噴射部３から浴槽１内に噴射される。詳述すると吸込部２から循環水路４内に吸い込まれた湯水は、主流路８と副流路９とが連通する箇所で主流路側ポンプ１０へ向かう流れと、副流路側ポンプ１１へ向かう流れとに分かれ、主流路側ポンプ１０へと流れた湯水は主噴射口６から浴槽１内へと噴射され、副流路側ポンプ１１へと流れた湯水は副噴射口７から浴槽１内へと噴射されている。この時主流路８の主噴射口６側の端部及び副流路９の副噴射口７側の端部に接続された気泡混入部１３より、主流路側ポンプ１０及び副流路側ポンプ１１へ流れた湯水には気泡が混入されることとなる。そして浴槽１内に噴射された湯水は再び吸込部２から循環水路４内に吸い込まれ、継続して浴槽１に気泡が混ざった湯水を噴射することができるようになっている。
【００２３】
また上記ジェットバスには、主噴射口６及び副噴射口７とから異なる噴射状態で湯水を噴射するために複数の運転モードが設けられている。これら複数の運転モードはポンプ部５のモーターの回転数を複数の異なる回転数に設定したものであり、この回転数は閉塞状態や空状態にない正常な運転状態における回転数である。本実施形態においては、図２に示すように６段階の異なる回転数をレベル０〜５までの運転モードとして設定し、例えば運転モードがレベル４の場合、正常運転時におけるモーターの回転数が４５〜４６（正常運転領域）になるように設定されている。これら複数の運転モードは切り替え手段によって任意の運転モードに設定できるようになっており、本実施形態においては制御部１４に接続した操作部１５を切り替え手段とし、使用者が外部より運転モードの切り替えを行うことができるようになっている。なお本実施形態においては、操作部１５を切り替え手段としたが、これに限定されず、切り替え手段は制御部１４で運転モードを自動的に切り替えるようなものであってもよいものとする。このように運転モードを設けることで、主噴射口６及び副噴射口７から異なる噴射状態で湯水を噴射することができ、使用者の好みに対応した湯水の噴射状態でジェットバスを使用することできる。
【００２４】
さらに上記ジェットバスは、入浴中の使用者の体の一部が吸込部２に吸込まれ抜けなくなる等して閉塞運転状態となってしまった場合や、吸込部２の設けている高さまで浴槽１に湯水が充分貯まっていない空運転状態となってしまった場合に備えて下記の構成を有している。
【００２５】
制御部１４にはポンプ部５のモーターの回転数を検出するための回転数検出手段１７が設けられている。本実施形態では該回転数検出手段１７を主流路側ポンプ１０のみに接続し、主流路側ポンプ１０のモーターの回転数を検出している。また制御部１４には回転数検出手段１７によって検出された主流路側ポンプ１０のモーターの回転数に基づいてポンプ部５の制御を行うポンプ制御手段１６が設けられている。ポンプ制御手段１６によるポンプ部５の制御は以下に詳述する。
【００２６】
図２に示すように上述した複数の運転モードにおける各運転モード毎には、あらかじめ吸込部２が閉塞された場合におけるモーターの異常回転数域である閉塞運転領域と、浴槽１内に湯水が充分貯えられていない状態におけるモーターの異常回転数域である空運転領域とが設定されている。ところでモーターの回転数を低くして運転した場合、閉塞状態及び空状態におけるモーターの回転数は低くなり、またモーターの回転数を高くして運転した場合、閉塞状態及び空状態におけるモーターの回転数が高くなるため、仮に全体として一つの閉塞運転領域と一つの空運転領域とを設定し、異なる運転モードでポンプ部５を運転した場合、回転数の低い正常運転領域を有する運転モードでは閉塞状態やもしくは空状態となったとしても正常運転領域にあると誤った判定をし、回転数の高い正常運転領域を有する運転モードでは正常な運転状態であったとしても閉塞運転領域及び空運転領域にあると誤った判定をしてしまうという問題が生じてしまう。これを防止するために本実施形態のジェットバスは上記したように各運転モード毎に夫々閉塞運転領域及び空運転領域とを設定したのである。例えば図２に示すように運転モードがレベル４の場合、閉塞運転領域を５２〜５５回転／秒、空運転領域を５６回転／秒以上になるように設定を行う。また所定閉塞運転時間と所定空運転時間とが設定されており、モーターの回転数が閉塞運転領域内で所定閉塞運転時間より長く連続してポンプ部５が運転された場合、もしくはモーターの回転数が空運転領域内で所定空運転時間より長く連続してポンプ部５が運転された場合、ポンプ部５の運転を停止するように制御している。図２に示す例では各運転モードは所定空運転時間を５秒、閉塞運転時間を３０秒に設定している。上記の設定に基づいてポンプ制御手段１６は、操作部１５によって設定された運転モードでの運転時において、回転数検出手段１７により検出されたモーターの回転数が閉塞運転領域にあることを所定閉塞運転時間連続して判定した場合に主流路側ポンプ１０と副流路側ポンプ１１との両方の運転を停止し、且つモーターの回転数が空運転領域にあることを所定空運転時間連続して判定した場合に主流路側ポンプ１０と副流路側ポンプ１１の両方の運転を停止するように制御している。
【００２７】
上記ポンプ制御手段１６の制御により、運転モード毎に適切な閉塞運転領域と空運転領域とを設定することができ、確実に閉塞運転や空運転を防止することができる。また上記のように主噴射口６と吸込部２との間の距離が副噴射口７と吸込部２と間の距離よりも長くなるように配設し、主流路側ポンプ１０のモーターの回転数を検出するための回転数検出手段１７を設けることで、主噴射口６と吸込部２との間の主流路８は副噴射口７と吸込部２と間の副流路９よりも抵抗が大きくなるため、副流路側ポンプ１１に対して主流路側ポンプ１０には気泡が流れ難くなり、気泡によってモーターの回転数が乱れることがなくなり、より正確にモーターの回転数を検出することができ、より確実に閉塞運転や空運転を防止することができる。
【００２８】
また特に閉塞運転領域にあるモーターの回転数が所定閉塞運転時間以内に閉塞運転領域を越えて外れた場合、閉塞運転領域でカウントされた時間をカウントされなかったものと見なすポンプ制御手段１６であってもよい。本実施形態においてはモーターの回転数が所定閉塞運転時間以内に閉塞運転領域を越えて外れた場合、閉塞運転領域でカウントされた時間をカウントされなかったものと見なし、モーターの回転数が再度閉塞運転領域内に入ったときからカウントを開始するように設定している。例えば図３の例においては、Ａ点で所定閉塞運転時間以内に閉塞運転領域を越えて外れたことを検出してＡ点以前に閉塞運転領域でカウントされた時間をカウントされなかったものと見なし、閉塞運転領域のカウントをリセットしている。一方Ａ点は空運転領域に入っているため、Ａ点から空運転領域でのカウントを開始している。そしてモーターの回転数が再度閉塞運転領域内に入ったＢ点より閉塞運転領域のカウントを開始している。この結果、図中イ〜ロ間は全体として所定空運転時間にあたる５秒を経過していることとなるが、所定空運転時間内に一時的に閉塞運転領域を越えて外れているので、モーターの回転数が閉塞運転領域内にあることを所定閉塞時間判定しなかったものとなり、ポンプ部５の運転は停止されずに継続されることとなる。このような構成とすることで、閉塞運転領域にあるモーターの回転数が所定閉塞運転時間以内に閉塞運転領域を越えて外れた場合、ポンプ部５を継続して運転することができる。
【００２９】
また上記閉塞運転領域と空運転領域とが重複した場合、重複した回転数域は閉塞運転領域と判定するポンプ制御手段１６を設けてもよい。例えば図２において、運転モードがレベル０〜２の場合に閉塞運転領域と空運転領域とが重複する回転数域（図中Ｄ）があり、回転数検出手段１７により検出されたモーターの回転数がこの重複した回転数域内にある場合は、閉塞運転領域にあると判定する。このように閉塞運転領域と空運転領域とが重複した回転数域を閉塞運転領域とすることで、閉塞運転を優先して防止することができる。
【００３０】
また、任意の運転モードから異なる任意の運転モードへ切り替わった直後に判定を行わない一定期間を設けてもよい。例えば図４に示すように、レベル４からレベル５に運転モードを切り替えた場合に、切り替えた直後の図中Ｅの一定期間は判定を行わない無視区間とするものである。またこの場合、運転モードを切り替える直前までにカウントされた時間は一定期間直後に持ち越されるものとされる。すなわち図４に示すように、運転モードを切り替える直前までに閉塞運転領域内にあるとしてカウントされた時間Ｅ（図では３秒）と一定期間直後の閉塞運転領域内にあるとしてカウントされた時間Ｆ（図では２秒）との合計が所定閉塞運転領域時間（５秒）を越えた場合は、ポンプ部５の運転を停止するように制御している。
【００３１】
【発明の効果】
上記のように本発明の請求項１記載の発明にあっては、噴射部から異なる噴射状態で湯水を噴射することができ、確実に閉塞運転と空運転とを防止することができるために、使用者の好みに対応した湯水の噴射状態で使用でき、且つ吸込部の吸い込みによる浴槽での事故や、モーターの焼き付きを防止することができる。また、主噴射口と吸込部との間の距離が副噴射口と吸込部と間の距離よりも長くなるように配設し、主流路側ポンプのモーターの回転数を検出するための回転数検出手段を設けることで、吸込部から主流路側ポンプまでの主流路の長さを吸込部から副流路側ポンプまでの副流路の長さよりも長く設定することができるため、副流路側ポンプに対して主流路側ポンプには気泡が流れ難くなり、気泡によってモーターの回転数が乱れることがなくなり、より正確にモーターの回転数を検出することができる。
【００３２】
請求項２記載の発明にあっては、上記請求項１記載の発明の効果に加えて、閉塞運転領域にある主流路側ポンプのモーターの回転数が所定閉塞運転時間以内に閉塞運転領域を越えて外れた場合、ポンプ部を継続して運転することができる。
【００３３】
請求項３記載の発明にあっては、上記請求項１又は２記載のいずれかの発明の効果に加えて、塞領域と空運転領域とが重複した回転数域を閉塞運転領域とすることで、閉塞運転を優先して防止することができる。
【００３４】
請求項４記載の発明にあっては、上記請求項１〜３記載のいずれかの発明の効果に加えて、運転モードを切り替えた直後の不安定な状態にあるモーターの回転数を検出しないようにすることで、ポンプ制御手段が誤った判定を起こすことが少なくなる。
【図面の簡単な説明】
【図１】本発明の実施の形態の一例の説明図である。
【図２】同上の各運転モードとモーターの回転数との関係を示すグラフ図である。
【図３】同上の運転時におけるモーターの回転数と時間との関係を示すグラフ図である。
【図４】同上の運転モード切り替え時におけるモーターの回転数と時間との関係を示すグラフ図である。
【符号の説明】
１浴槽
２吸込部
３噴射部
４循環水路
５ポンプ部
６主噴射口
７副噴射口
８主流路
９副流路
１０主流路側ポンプ
１１副流路側ポンプ
１３気泡混入部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a jet bath provided with a plurality of operation modes for injecting hot water in different injection states.
[0002]
[Prior art]
Conventionally, as this kind of jet bath, a circulation water channel that connects the suction portion of the bathtub and the injection portion is provided in communication, and is operated by a motor in the middle of the circulation water channel, and hot water in the bathtub is sucked from the suction portion and then the bathtub from the injection portion. It is known that a pump unit for injecting is provided, and a plurality of operation modes for injecting hot water in different injection states are provided from the injection unit, and can be used in a hot water injection state corresponding to the user's preference. It was possible.
[0003]
However, the above-mentioned conventional jet bath has a sufficient amount of hot and cold water in the bathtub when the part of the user's body taking a bath becomes blocked due to being sucked into the suction part and cannot be removed. Even in an empty state in which the pump has not been stored, the pump section continues to be operated, causing problems such as accidents in the bathtub due to suction of the suction section and burning of the motor.
[0004]
Separately from the above-mentioned conventional jet bath, the rotation speed of the motor that operates the pump section is fixed, the rotation speed of the motor of the pump section during operation is detected, and the detected rotation speed of the motor is preset. A jet bath having a pump control means for stopping the operation of the pump unit when the rotation speed is in an empty state is known. However, such a conventional jet bath has a plurality of operation modes. Therefore, hot water could not be ejected from the ejection section in different ejection states.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and an object of the present invention is to jet hot water in a different jetting state from the jetting section, and to prevent blockage operation and idling operation. It is an object to provide a bus.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the jet bath according to the present invention is provided with a circulating water channel 4 that connects the suction portion 2 and the injection unit 3 of the bathtub 1 in communication, and is operated by a motor in the middle of the circulating water channel 4 and in the bathtub 1. In the jet bath provided with the pump unit 5 that sucks in the hot water from the suction unit 2 and injects it from the injection unit 3 into the bathtub 1, a plurality of operation modes for injecting hot water in different injection states from the injection unit 3 are provided. The rotational speeds of the motors in the operational modes are set to different rotational speeds, and the rotational speed detection means 17 for detecting the rotational speeds of the motors is provided, and the motors in the case where the suction part 2 is closed for each operational mode. Set the operation mode that is set by setting the closed operation range that is the abnormal rotation speed range and the idle operation range that is the abnormal rotation speed range of the motor when not enough hot water is stored in the bathtub 1 In the operation of the pump unit 5, the operation of the pump unit 5 is stopped when it is determined that the rotation speed of the motor detected by the rotation speed detection means 17 is in the blockage operation region for a predetermined blockage operation time, and the rotation of the motor The pump control means 16 is provided for stopping the operation of the pump unit 5 when it is determined that the number is in the idle operation region for a predetermined idle operation time , and is used for mixing bubbles in the hot water in the circulation channel 4. The bubble mixing part 13 is provided, and the injection part 3 is constituted by the main injection port 6 and the sub injection port 7 provided in the bathtub 1, and the distance between the main injection port 6 and the suction part 2 is the sub injection port 7 and the suction. The main flow path 8 that is disposed so as to be longer than the distance between the main portion 2 and the main injection port 6 and the suction portion 2 is connected in communication, and the sub flow passage that connects the sub injection port 7 and the suction portion 2 is connected. 9 constitutes the circulating water channel 4, and the main channel 8 of the main channel 8 and the sub-channel 9 communicate with each other. The main flow path side pump 10 is provided on the downstream side of the part, the sub flow side pump 11 is provided on the downstream side of the part where the main flow path 8 and the sub flow path 9 of the sub flow path 9 communicate with each other, and the motor of the main flow path side pump 10 The rotation speed detection means 17 for detecting the rotation speed of the main flow path side pump 10 detected by the rotation speed detection means 17 indicates that the rotation speed of the motor in the main passage side pump 10 is in the blockage operation region continuously for a predetermined blockage operation time. When the determination is made, the operation of both the main flow path side pump 10 and the sub flow path side pump 11 is stopped, and it is determined continuously that the rotation speed of the motor of the main flow path side pump 10 is in the empty operation range for a predetermined empty operation time. In this case, control is performed such that the operation of both the main flow path side pump 10 and the sub flow path side pump 11 is stopped .
[0007]
By providing a plurality of operation modes as described above, hot water can be injected from the injection unit 3 in different injection states. In addition, by performing the control as described above, closed operation corresponding to each operation mode is possible. It is possible to set the area and the idling operation area, and it is possible to reliably prevent the blocking operation and the idling operation. Further, as described above, the distance between the main injection port 6 and the suction portion 2 is arranged to be longer than the distance between the sub injection port 7 and the suction portion 2, and the motor of the main flow path side pump 10 is rotated. By providing the rotation speed detection means 17 for detecting the number, the length of the main flow path 8 from the suction section 2 to the main flow path side pump 10 is the length of the sub flow path 9 from the suction section 2 to the sub flow path side pump 11. Therefore, it is difficult for air bubbles to flow into the main flow path side pump 10 with respect to the sub flow side pump 11, and the rotation speed of the motor is not disturbed by the air bubbles, so that the rotation speed of the motor can be set more accurately. Can be detected.
[0008]
Further, the jet bath according to claim 2 is the jet bath according to claim 1, wherein when the rotational speed of the motor of the main flow path side pump 10 in the blockage operation region exceeds the blockage operation region within a predetermined blockage operation time, the jet bath is blocked. The time counted in the driving area is regarded as not counted.
[0009]
By adopting such a configuration, when the rotational speed of the motor of the main flow path side pump 10 in the blockage operation region deviates beyond the blockage operation region within a predetermined blockage operation time, the pump unit 5 is continuously operated. Can do.
[0010]
The jet bus according to claim 3 is characterized in that, in the jet bus according to claim 1 or 2, when the closed operation region and the idle operation region overlap, the overlapped rotational speed region is a closed operation region. To do.
[0011]
By setting the rotation speed region where the closed operation region and the idle operation region overlap as described above as the closed operation region, the closed operation can be preferentially prevented.
[0012]
Further, the jet bath according to claim 4 is provided with a certain period in which the determination is not performed immediately after switching from any operation mode to any different operation mode in the jet bath according to any one of claims 1 to 3. It is characterized by comprising.
[0013]
By not detecting the rotational speed of the motor in an unstable state immediately after switching the operation mode as described above, the pump control means 16 is less likely to make an erroneous determination.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.
[0017]
As shown in FIG. 1, the jet bath in this embodiment has a bathtub 1 having a drain port 12 at the bottom, and a suction part 2 that opens to the bathtub 1 is provided at the bottom of the bathtub 1. The injection part 3 is provided in the location higher than the suction part 2 of the bathtub 1, and the injection part 3 is comprised by the main injection port 6 and the sub injection port 7 which open toward the bathtub 1, and the bathtub 1 opposes. A sub-injection port 7 is provided on one of the side walls, and a main injection port 6 is provided on the other side. The suction part 2 is provided at a position close to the sub-injection port 7. The distance between the main injection port 6 and the suction portion 2 is arranged to be longer than the distance between the sub-injection port 7 and the suction portion 2.
[0018]
The main injection port 6 and the suction portion 2 are connected in communication by a main flow path 8, and the sub injection port 7 and the suction portion 2 are also connected in communication by a sub flow path 9. The middle of the main flow path 8 and the middle of the sub flow path 9 are connected in communication, and the portion from the place where the main flow path 8 and the sub flow path 9 communicate to the suction part 2 is a single flow path. . That is, the flow path from the place where the main flow path 8 and the sub flow path 9 communicate to the suction portion 2 is the main flow path 8 and the sub flow path 9. The main flow path 8 and the sub flow path 9 constitute a circulation water channel 4.
[0019]
Further, a bubble mixing portion 13 is connected to an end portion of the main flow path 8 corresponding to an end portion of the circulation water channel 4 on the main injection port 6 side and an end portion of the sub flow path 9 on the sub injection port 7 side. The bubble mixing section 13 can mix bubbles in the hot water in the circulation water channel 4. At this time, the distance between the bubble mixing portion 13 and the main injection port 6 is set to be longer than the distance between the bubble mixing portion 13 and the sub injection port 7.
[0020]
On the other hand, the main flow path 8 of the main flow path 8 and the sub flow path 9 are located closer to the main injection port 6 (downstream) than the position where the main flow path 8 and the sub flow path 9 communicate with each other. The main flow path side pump 10 which inhales and injects into the bathtub 1 from the main injection opening 6 is provided, and the sub injection opening 7 side (downstream) rather than the location where the main flow path 8 of the sub flow path 9 and the sub flow path 9 communicate. The auxiliary flow path side pump 11 which is operated by a motor and sucks hot water in the bathtub 1 from the suction portion 2 and injects the hot water in the bathtub 1 into the bathtub 1 from the auxiliary injection port 7 is also provided. The length of the main flow path 8 from the main flow path side pump 10 to the suction part 2 is set longer than the length of the sub flow path 9 from the sub flow path side pump 10 to the suction part 2. The main channel side pump 10 and the sub channel side pump 11 constitute a pump unit 5.
[0021]
An operation unit 15 for operating the main channel side pump 10 and the sub channel side pump 11 from the outside is connected to the main channel side pump 10 and the sub channel side pump 11 of the pump unit 5 via the control unit 14.
[0022]
When the jet bath is used, the operation section 15 is operated to drive both the main flow path side pump 10 and the sub flow path side pump 11 of the pump section 5. When the pump unit 5 is in an operating state, the hot water stored in the bathtub 1 is sucked into the circulation water channel 4 from the suction unit 2 and injected into the bathtub 1 from the injection unit 3. More specifically, the hot water sucked into the circulation water channel 4 from the suction part 2 flows toward the main channel side pump 10 at the location where the main channel 8 and the sub channel 9 communicate with each other, and flows toward the sub channel side pump 11. The hot water flowing into the main flow path side pump 10 is injected into the bathtub 1 from the main injection port 6, and the hot water flowing into the sub flow path side pump 11 is injected into the bathtub 1 from the sub injection port 7. Yes. At this time, the air flows from the bubble mixing portion 13 connected to the end of the main flow path 8 on the main injection port 6 side and the end of the sub flow path 9 on the sub injection port 7 side to the main flow path side pump 10 and the sub flow path side pump 11. Bubbles will be mixed in the hot water. And the hot water injected into the bathtub 1 is again sucked into the circulation water channel 4 from the suction part 2, and the hot water mixed with bubbles can be continuously injected into the bathtub 1.
[0023]
The jet bath is provided with a plurality of operation modes in order to inject hot water in different injection states from the main injection port 6 and the sub injection port 7. In the plurality of operation modes, the number of rotations of the motor of the pump unit 5 is set to a plurality of different numbers of rotations, and the number of rotations is the number of rotations in a normal operation state that is not in a closed state or an empty state. In this embodiment, as shown in FIG. 2, six different rotation speeds are set as operation modes from level 0 to level 5, for example, when the operation mode is level 4, the motor rotation speed during normal operation is 45. It is set to be -46 (normal operation range). The plurality of operation modes can be set to any operation mode by the switching means. In this embodiment, the operation unit 15 connected to the control unit 14 is used as the switching means, and the user switches the operation mode from the outside. Can be done. In the present embodiment, the operation unit 15 is the switching unit. However, the operation unit 15 is not limited to this, and the switching unit may automatically switch the operation mode by the control unit 14. By providing the operation mode in this way, hot water can be injected from the main injection port 6 and the sub injection port 7 in different injection states, and the jet bath is used in the hot water injection state corresponding to the user's preference. it can.
[0024]
Furthermore, the above-described jet bath has a bathtub 1 up to the height at which the suction portion 2 is provided when a part of the user's body taking a bath becomes inhaled due to being sucked into the suction portion 2 and cannot be removed. The following configuration is provided in preparation for a case where the vehicle is in an idling state where hot water is not sufficiently stored.
[0025]
The control unit 14 is provided with a rotational speed detection means 17 for detecting the rotational speed of the motor of the pump unit 5. In the present embodiment, the rotational speed detecting means 17 is connected only to the main flow path side pump 10 to detect the rotational speed of the motor of the main flow path side pump 10. The control unit 14 is provided with pump control means 16 for controlling the pump unit 5 based on the rotation speed of the motor of the main flow path side pump 10 detected by the rotation speed detection means 17. The control of the pump unit 5 by the pump control means 16 will be described in detail below.
[0026]
As shown in FIG. 2, for each operation mode in the plurality of operation modes described above, there is a sufficient amount of hot water in the closed operation region, which is an abnormal rotational speed range of the motor when the suction portion 2 is previously closed, and in the bathtub 1. An idle operation region, which is an abnormal rotational speed region of the motor when not stored, is set. By the way, when the motor is operated at a low speed, the motor speed is low in the closed state and the empty state, and when the motor is operated at a high speed, the motor speed is in the closed state and the empty state. Therefore, if one pumping operation region and one idle operation region are set as a whole and the pump unit 5 is operated in different operation modes, the operation mode having a normal operation region with a low number of rotations is in a blocking state. Even if it is in an empty state, it is erroneously determined that it is in the normal operation region, and even if it is in a normal operation state in a normal operation region with a high rotational speed, If there is, the problem of making an erroneous determination occurs. In order to prevent this, the jet bus according to the present embodiment sets the closed operation region and the idle operation region for each operation mode as described above. For example, as shown in FIG. 2, when the operation mode is level 4, the closed operation region is set to 52 to 55 rotations / second, and the idle operation region is set to 56 rotations / second or more. In addition, a predetermined closed operation time and a predetermined idle operation time are set, and when the pump unit 5 is operated continuously for a longer time than the predetermined closed operation time in the closed operation region, or the rotational speed of the motor. However, when the pump unit 5 is continuously operated in the idle operation region for longer than the predetermined idle operation time, the operation of the pump unit 5 is controlled to be stopped. In the example shown in FIG. 2, in each operation mode, the predetermined idle operation time is set to 5 seconds and the closed operation time is set to 30 seconds. Based on the above settings, the pump control means 16 determines that the motor rotation speed detected by the rotation speed detection means 17 is in the blockage operation region when operating in the operation mode set by the operation unit 15. When the operation time is determined continuously, the operation of both the main flow path side pump 10 and the sub flow path side pump 11 is stopped, and it is determined continuously that the rotation speed of the motor is in the idle operation range for a predetermined idle operation time. In this case, the operation of both the main flow path side pump 10 and the sub flow path side pump 11 is controlled to be stopped.
[0027]
By the control of the pump control means 16, it is possible to set an appropriate closed operation region and an empty operation region for each operation mode, and reliably prevent a closed operation and an empty operation. Further, as described above, the distance between the main injection port 6 and the suction portion 2 is arranged to be longer than the distance between the sub-injection port 7 and the suction portion 2, and the number of rotations of the motor of the main flow path side pump 10 is increased. By providing the rotation speed detection means 17 for detecting the above, the main flow path 8 between the main injection port 6 and the suction part 2 is more resistant than the sub flow path 9 between the sub injection port 7 and the suction part 2. Since it becomes large, it is difficult for air bubbles to flow into the main flow path side pump 10 with respect to the sub flow path side pump 11, the rotation speed of the motor is not disturbed by the bubbles, and the rotation speed of the motor can be detected more accurately. Blocking operation and idling operation can be prevented more reliably.
[0028]
In particular, the pump control means 16 considers that the time counted in the closed operation region is not counted when the rotation speed of the motor in the closed operation region exceeds the closed operation region within a predetermined closed operation time. May be. In this embodiment, if the motor speed deviates beyond the blockage operation area within a predetermined blockage operation time, the time counted in the blockage operation area is regarded as not counted, and the motor rotation speed is blocked again. It is set to start counting when it enters the operation area. For example, in the example of FIG. 3, it is considered that the time counted in the closed operation region before point A is detected by detecting that the point has exceeded the closed operation region within a predetermined closed operation time at point A. The count of the closed operation area is reset. On the other hand, since point A is in the idling region, counting in the idling region starts from point A. Then, the count of the closed operation region is started from the point B at which the rotation speed of the motor enters the closed operation region again. As a result, between 5 and 5 in the figure, 5 seconds corresponding to the predetermined idle operation time has elapsed as a whole, but the motor is temporarily out of the closed operation region within the predetermined idle operation time. The predetermined blockage time is not determined that the rotation speed is within the blockage operation region, and the operation of the pump unit 5 is continued without being stopped. With such a configuration, the pump unit 5 can be continuously operated when the rotational speed of the motor in the closed operation region deviates beyond the closed operation region within a predetermined closed operation time.
[0029]
Further, when the closed operation region and the idle operation region overlap, a pump control means 16 may be provided that determines that the overlapped rotation speed region is a closed operation region. For example, in FIG. 2, when the operation mode is level 0 to 2, there is a rotation speed region (D in the figure) where the closed operation region and the idle operation region overlap, and the motor rotation speed detected by the rotation speed detection means 17 Is in the overlapped rotation speed range, it is determined that it is in the closed operation range. Thus, by making the rotation speed region where the closed operation region and the idle operation region overlap as the closed operation region, the closed operation can be preferentially prevented.
[0030]
Moreover, you may provide the fixed period which does not determine immediately after switching from arbitrary operation modes to different arbitrary operation modes. For example, as shown in FIG. 4, when the operation mode is switched from level 4 to level 5, a certain period of E in the figure immediately after the switching is set as an ignoring section where no determination is performed. In this case, the time counted immediately before switching the operation mode is carried over immediately after a certain period. That is, as shown in FIG. 4, a time E (3 seconds in the figure) counted as being in the closed operation region immediately before switching the operation mode and a time F counted as being in the closed operation region immediately after a certain period. When the total of (2 seconds in the figure) exceeds a predetermined blockage operation region time (5 seconds), control is performed so that the operation of the pump unit 5 is stopped.
[0031]
【The invention's effect】
In the invention according to claim 1 of the present invention as described above, hot water can be injected from the injection section in different injection states, and the closed operation and the idling operation can be surely prevented. It can be used in a hot water jetting state corresponding to the user's preference, and can prevent accidents in the bathtub due to suction of the suction part and motor seizure. In addition, the number of revolutions is detected to detect the number of revolutions of the motor of the main flow path side pump by arranging the distance between the main injection port and the suction portion to be longer than the distance between the sub injection port and the suction portion. By providing the means, the length of the main flow path from the suction section to the main flow path side pump can be set longer than the length of the sub flow path from the suction section to the sub flow path side pump. Thus, bubbles do not easily flow through the main flow path side pump, and the rotation speed of the motor is not disturbed by the bubbles, so that the rotation speed of the motor can be detected more accurately.
[0032]
In the second aspect of the invention, in addition to the effect of the invention according to the first aspect, the rotational speed of the motor of the main flow path side pump in a closed operating area beyond the obstruction operation area within a predetermined closed operating time When it comes off, the pump unit can be operated continuously.
[0033]
In the invention according to claim 3, in addition to the effect of the invention according to any one of claims 1 or 2, the rotation speed region in which the closed region and the idle operation region overlap is set as the closed operation region. Therefore, priority can be given to blockage operation.
[0034]
In the invention according to claim 4, in addition to the effect of the invention according to any one of claims 1 to 3, the rotational speed of the motor in an unstable state immediately after switching the operation mode is not detected. By doing so, the pump control means is less likely to make an erroneous determination.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an example of an embodiment of the present invention.
FIG. 2 is a graph showing the relationship between each operation mode and the rotational speed of the motor.
FIG. 3 is a graph showing the relationship between the rotational speed of the motor and time during the operation.
FIG. 4 is a graph showing the relationship between the motor rotation speed and time when the operation mode is switched.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bathtub 2 Suction part 3 Injection part 4 Circulating water channel 5 Pump part 6 Main injection port 7 Sub injection port 8 Main flow path 9 Sub flow path 10 Main flow path side pump 11 Sub flow path side pump 13 Bubble mixing part

Claims

A circulation water channel that connects the suction portion of the bathtub and the injection portion is provided, and a pump portion that is operated by a motor in the middle of the circulation water passage and sucks hot water in the bathtub from the suction portion and is injected from the injection portion into the bathtub is provided. In the jet bath, a plurality of operation modes for injecting hot and cold water in different injection states from the injection unit are provided, and the rotation speeds of the motors in the plurality of operation modes are set to different rotation speeds, and the rotation speed of the motor is detected. Rotation speed detection means is provided, and when the suction part is blocked for each operation mode, the abnormal operation speed range of the motor, and the abnormal rotation speed of the motor in the state where hot water is not sufficiently stored in the bathtub In the operation of the pump unit in the set operation mode, the motor rotation speed detected by the rotation speed detection means is blocked. A pump that stops the operation of the pump unit when it is determined that it is in the predetermined closed operation time, and stops the operation of the pump unit when it is determined that the rotational speed of the motor is in the empty operation region. The control means is provided , the jet bath is provided with a bubble mixing part for mixing bubbles into the hot water in the circulation channel, and the injection part is composed of a main injection port and a sub injection port provided in the bathtub. A main flow passage that is disposed so that a distance between the main injection port and the suction portion is longer than a distance between the sub injection port and the suction portion, and that connects the main injection port and the suction portion; A circulation channel is constituted by a sub-flow channel that connects the inlet and the suction portion, and a main flow-side pump is provided downstream from a location where the main flow channel and the sub-flow channel communicate with each other. A sub-flow side pump is provided downstream from the location where the channel and the sub-flow channel communicate with each other. The side pump and the sub-flow side pump constitute a pump unit, and includes a rotation speed detection means for detecting the rotation speed of the motor of the main flow path side pump, and the motor of the motor of the main flow path side pump detected by the rotation speed detection means. When it is determined continuously that the rotation speed is in the blockage operation region for a predetermined blockage operation time, the operation of both the main flow path side pump and the sub flow path side pump is stopped, and the rotation speed of the motor of the main flow path side pump is idle. A jet bath characterized by controlling the operation of both the main flow path side pump and the sub flow path side pump when the predetermined idle operation time is continuously determined to be in the region .

When the number of rotations of the motor of the main flow path side pump in the blockage operation region deviates beyond the blockage operation region within a predetermined blockage operation time, the time counted in the blockage operation region is regarded as not counted. The jet bath according to claim 1.

3. The jet bath according to claim 1, wherein when the closed operation region and the idle operation region overlap, the overlapped rotation speed region is set as a closed operation region.

The jet bath according to any one of claims 1 to 3, wherein a fixed period during which determination is not performed immediately after switching from an arbitrary operation mode to an arbitrary operation mode is provided .