以下，參照圖式來針對本發明一實施型態加以說明。以下的說明中，｢上游｣係指排水流及排氣流的上游，又，｢下游｣係指排水流及排氣流的下游。又，以下的說明中，｢俯視圖｣係指從上側來顯示對象物之圖式，｢仰視圖｣係指從下側來顯示對象物之圖式。又，｢前視圖｣係指從排水流的下游側來顯示對象物之圖式，｢後視圖｣係指從排水流的上游側來顯示對象物之圖式。另外，｢右側視圖｣係指從排氣流的上游側來顯示對象物之圖式，｢左側視圖｣係指從排氣流的下游側來顯示對象物之圖式。
[排水管構造及消音器]
圖1係顯示可應用本發明一實施型態相關的消音器1之排水管構造C的俯視圖。圖2係顯示排水管構造C之前視圖。
如圖1所示，排水管構造C係具備連接於流入管120與流出管130之儲存槽10，以及會使流出管130與儲存槽10相連通般地連接於流出管130與儲存槽10之連通部110。
排水管構造C中，流入管120為連通於浴缸等之用水側配管。又，排水管構造C中，流出管130為相對於水平方向而配置為幾乎無傾斜狀態的橫向管。此範例中，流出管130係具有作為虹吸排水管之功能。亦即，流出管130可在進行來自用水機器的排水之際，藉由虹吸力的產生以促進來自會通過儲存槽10之用水側配管的排水。
排水管構造C中，連通部110係具備本發明一實施型態相關之消音器1。
消音器1係被包含於消音器單元101。如圖2所示，消音器單元101係配置於較流出管130更上側之位置。
圖3為圖2之A-A剖面圖。圖3係顯示形成於消音器單元101之通道。
如圖3所示，消音器1係具有管狀通道3。管狀通道3係具有連通於流出管130之入口部A1與連通於儲存槽10之出口部A2。
又，消音器1係具有連通於出口部A2之通氣管2。通氣管2係和出口部A2一同連通於儲存槽10。本實施型態中，通氣管2係和消音器1一同被包含於消音器單元101。
又，連通部110係具有連接於流出管130與消音器1之流出管側配管部140，以及連接於消音器1與儲存槽10之儲存槽側配管部150。流出管側配管部140為從流出管130朝上方立起之彎管。又，儲存槽側配管部150為相對於流出管130而平行地延伸之直管。
排水管構造C中，流出管側配管部140與儲存槽側配管部150係分別連接於消音器單元101。本實施型態中，排水管構造C係另具有排氣側通氣管160。
圖4係從上側來顯示流出管側配管部140、儲存槽側配管部150及排氣側通氣管160之立體圖。此外，圖4中省略了儲存槽10及消音器單元101。又，圖5係從上側來顯示排水管構造C之連通部110的周邊之立體圖。
如圖4所示，流出管側配管部140係如上述般地為彎管。流出管側配管部140係由從流出管130朝上側立起之縱管部141，以及連接於該縱管部141之橫管部142所形成。如圖5所示，排水管構造C中，流出管側配管部140的縱管部141係連接於流出管130。又，如圖5所示，流出管側配管部140的橫管部142係連接於消音器單元101。藉此，如圖5所示，流出管130便會連通於消音器單元101。
又，如圖4所示，儲存槽側配管部150係如上述般地為直管。如圖5所示，排水管構造C中，儲存槽側配管部150的一端部150a係連接於消音器單元101。又，如圖5所示，儲存槽側配管部150的另一端部150b係連接於儲存槽10。藉此，如圖5所示，流出管130便會透過消音器單元101而連通於儲存槽10。
另外，如圖4所示，排氣側通氣管160為連通於外部之直管。如圖5所示，排氣側通氣管160係連接於消音器單元101。藉此，如圖5所示，流出管130便會透過消音器單元101而連通於排氣側通氣管160。另外，如圖5所示，儲存槽10亦會透過消音器單元101而連通於排氣側通氣管160。亦即，流出管130及儲存槽10會透過排氣側通氣管160而連通於各自的外部。
圖6係顯示消音器單元101之俯視圖。又，圖7係顯示消音器單元101之仰視圖。如圖6及圖7所示，消音器單元101為扁平的單元。消音器單元101係具有流入側連接部101a。流入側連接部101a係連接有流出管側配管部140。圖8為消音器單元101之右側視圖。如圖8所示，消音器單元101的流入側連接部101a係連通於管狀通道3的入口部A1。
圖9為消音器單元101之左側視圖。如圖9所示，消音器單元101係具有儲存槽側連接部101b與排氣側連接部101c。儲存槽側連接部101b係連接有儲存槽側配管部150。圖10為消音器單元101之後視圖。如圖10所示，儲存槽側連接部101b係形成有通氣管2之通道4的一側開口。圖11為消音器單元101之前視圖。排氣側連接部101c係連接有排氣側通氣管160。如圖11所示，排氣側連接部101c係形成有通氣管2之通道4的另一側開口。亦即，排水管構造C中，排氣管2的通道4係開口於儲存槽側連接部101b及排氣側連接部101c兩者。
圖12為消音器單元101之A-A剖面相當圖。
如圖12所示，管狀通道3係具有連接於音源側之入口部A1、連接於音源以外一側之出口部A2、以及配置於入口部A1側之三叉分歧通道31。三叉分歧通道31的流入通道31a係連通於入口部A1。三叉分歧通道31的一側流出通道31b係使該一側流出通道31b的末端31be為被封閉的。三叉分歧通道31的另一側流出通道31c係連通於出口部A2。
消音器1中，三叉分歧通道31的分歧部31J為T字形。
如圖12所示，分歧部31J係使流入通道31a會分歧為一側流出通道31b及另一側流出通道31c之部分。換言之，為流入通道31a、一側流出通道31b及另一側流出通道31c之3個通道的匯流部分。排水管構造C中，流入通道31a係指向與一側流出通道31b相同方向般地延伸。另一側流出通道31c如圖12所示，在俯視觀看下，係相對於流入通道31a及一側流出通道31b而正交般地連接。排水管構造C中，流入通道31a與一側流出通道31b之間係形成有朝另一側流出通道31c之導入口部A3。藉此，如圖12所示，在俯視觀看下，三叉分歧通道31的分歧部31J便會成為使另一側流出通道31c會相對於流入通道31a及一側流出通道31b而正交般地連接之T字形。
如圖12所示，若於管狀通道3的入口部A1側設置有三叉分歧通道31，則從入口部A1輸入的聲音便會成為在流入通道31a前進之輸入波與在一側流出通道31b的末端31be回彈之反射波所合成的合成波。另外，該合成波會通過導入口部A3而被導入至另一側流出通道31c。藉此，便可將從入口部A1所輸入之聲音的頻率分佈改變為該聲音容易衰減之頻域側(此範例中為低頻側)。此外，三叉分歧通道31中，若使從導入口部A3到一側流出通道31b的末端31be之長度(一側流出通道31b的深度方向尺寸)為L1，則長度L1可依入口部A1、出口部A2、三叉分歧通道31的形狀、大小、尺寸等來適當地設定。長度L1的具體例舉例為20mm左右。
又，消音器1中，管狀通道3係具有剖面積會小於入口部A1的剖面積SA1之小剖面積部。
如圖12所示，三叉分歧通道31之流入通道31a的剖面積S31a係剖面積會小於入口部A1的剖面積SA1。又，三叉分歧通道31之一側流出通道31b的剖面積S31b亦是剖面積會小於入口部A1的剖面積SA1。另外，本實施型態中，流入通道31a的剖面積S31a及一側流出通道31b的剖面積S31b係隨著朝向一側流出通道31b的末端31be而變小。另外，導入口部A3的剖面積SA3係小於流入通道31a的剖面積S31a。同樣地，三叉分歧通道31之另一側流出通道31c的剖面積S31c亦是剖面積會小於入口部A1的剖面積SA1。亦即，排水管構造C中，三叉分歧通道31整體為小剖面積部。此外，依據本發明，只要管狀通道3的至少一部分具備前述小剖面積部即可。又，入口部A1的剖面積SA1與管狀通道3所設置之該小剖面積部的剖面積之關係可依入口部A1、出口部A2、三叉分歧通道31的形狀、大小、尺寸等來適當地設定。具體例舉例有使得入口部A1的內徑相當於25A，而使三叉分歧通道31之導入口部A3的內徑相當於13A。
又，消音器1中，管狀通道3係具有折返通道3t。
依據本發明，只要管狀通道3的至少一部分具備至少1個折返通道3t即可。如圖12所示，排水管構造C中，三叉分歧通道31係設置有複數個(此範例中為5個)折返通道3t。藉此，本實施型態中，便可使消音器1的尺寸較小型，且將該小剖面積部的長度(距離)確保為更長。
更具體而言，三叉分歧通道31的另一側流出通道31c係通過導入口部A3而折返至會沿著流入通道31a返回之方向。亦即，本實施型態中，三叉分歧通道31之導入口部A3的附近係形成有折返通道3t。藉此，三叉分歧通道31的流入通道31a及另一側流出通道31c便會形成透過折返通道3t而相連通之2個延伸通道。排水管構造C中，三叉分歧通道31的流入通道31a及另一側流出通道31c在俯視觀看下，係以折返通道3t為基點而相互打開般地以固定的角度α0延伸。
又，排水管構造C中，三叉分歧通道31的另一側流出通道31c係具備3個折返通道3t。藉此，排水管構造C中，另一側流出通道31c相鄰之該另一側流出通道31c的鄰接通道31c1便會形成透過折返通道3t而相連通之2個延伸通道。又，如圖12所示，2個鄰接通道31c1在俯視觀看下，亦是以折返通道3t為基點而相互打開般地以固定的角度α0延伸。藉此，依據本實施型態，藉由設置有角度α0，可將2個鄰接通道31c1的長度確保為較長，故可將該小剖面積部的長度確保為更長。此外，依據本發明，亦可使2個鄰接通道31c1相互平行地延伸。
另外，排水管構造C中，通氣管2之通道4的排氣側連接部101c側係通過出口部A2而折返至會沿著三叉分歧通道31的另一側流出通道31c返回之方向。亦即，排水管構造C中，三叉分歧通道31的出口部A2的附近亦形成有折返通道3t。藉此，三叉分歧通道31的另一側流出通道31c及通氣管2的通道4便會形成透過折返通道3t而相連通之2個延伸通道。排水管構造C中，三叉分歧通道31的另一側流出通道31c及通氣管2的通道4在俯視觀看下，亦是以折返通道3t為基點而相互打開般地以固定的角度α0延伸。藉此，則在排水管構造C中，便可使消音器單元101的尺寸較小型，且將該小剖面積部的長度確保為更長。此外，依據本發明，可使三叉分歧通道31的另一側流出通道31c及通氣管2的通道4相互平行地延伸。
此外，折返通道3t的位置及個數可依入口部A1、出口部A2、三叉分歧通道31的形狀、大小、尺寸等來適當地設定。例如，可將折返通道3t的位置及個數設定為不會與消音器1的周邊所配置之組件(此範例中為儲存槽10、流出管130)互相干擾，或是伸出。舉一具體例，將折返通道3t的位置及個數設定為三叉分歧通道31之另一側流出通道31c的全長會成為363mm以上。此外，依據本發明，亦可未設置有折返通道3t來將該小剖面積部的長度(距離)確保為更長。
又，排水管構造C中，出口部A2係配置於較入口部A1更上側。藉此，本實施型態中，管狀通道3的底部便會形成為該管狀通道3的底部會朝向入口部A1而傾斜至下側。
圖13為圖6之B-B剖面圖。此處，B-B剖面如圖12所示，在俯視觀看下為包含有入口部A1的中心軸O1之剖面。又，圖14為圖6之C-C剖面圖。此處，C-C剖面如圖12所示，在俯視觀看下為包含有出口部A2的中心軸O2之剖面。
如圖13及圖14所示，排水管構造C中，出口部A2的底部(下端)E2係配置於較入口部A1的底部(下端)E1更上側。又，如圖13及圖14所示，各管狀通道3的底部(下端)E3從排水側上游方向(下游方向)觀看，連結管狀通道3的各底部E3之假想線L31係形成為會相對於水平軸Oy而朝向入口部A1以角度α1傾斜至下側。藉此，管狀通道3的底部E3便會形成為在出口部A2與入口部A1之間，該管狀通道3的底部E3會朝向入口部A1而以角度α1傾斜至下側。角度α1的具體例舉例為α1=3°。
圖15為圖6之D-D剖面圖。此處，D-D剖面如圖12所示，在俯視觀看下為通過三叉分歧通道31的流入通道31a之剖面。又，圖16為圖6之E-E剖面圖。此處，E-E剖面如圖12所示，在俯視觀看下為通過三叉分歧通道31的另一側流出通道31c之剖面。
如圖15及圖16所示，排水管構造C中，各管狀通道3的底部(下端)E3從通氣側上游方向(下游方向)觀看，係形成為會相對於水平軸Oy而朝向入口部A1以角度α2傾斜至下側。本實施型態中，三叉分歧通道31之流入通道31a的底部E3與三叉分歧通道31的另一側流出通道31c之各延伸通道31c1的底部E3皆是形成為在出口部A2與入口部A1之間，該管狀通道3的底部E3會朝向入口部A2而以角度α2傾斜至下側。角度α2的具體例舉例為α2=1°。
又，消音器1中，管狀通道3係具備透過折返通道3t而相連通之2個延伸通道。2個延伸通道之相互鄰接的通道側壁為共用壁32。
如圖12所示，管狀通道3係具備透過折返通道3t而相連通之三叉分歧通道31的流入通道31a及另一側流出通道31c來作為前述2個延伸通道。流入通道31a及另一側流出通道31c之相互鄰接的通道側壁為共用壁32。又，如圖12所示，三叉分歧通道31的另一側流出通道31c係具備透過折返通道3t而相連通之2個延伸通道31c1來作為前述2個延伸通道。2個延伸通道31c1之相互鄰接的通道側壁為共用壁32。另外，管狀通道3係具備透過折返通道3t而相連通之三叉分歧通道31的另一側流出通道31c及通氣管2的通道4來作為前述2個延伸通道。三叉分歧通道31的另一側流出通道31c及通氣管2的通道4之相互鄰接的通道側壁亦為共用壁32。
如圖12所示，排水管構造C中，消音器單元101係設置有5個共用壁32。又，各共用壁32如圖12所示，在俯視觀看下為2個延伸通道之相互鄰接之通道側壁的一部分。此外，依據本發明，可使三叉分歧通道31的流入通道31a及另一側流出通道31c之相互鄰接的通道側壁所形成之共用壁32成為該通道側壁的全部。又，依據本發明，可使三叉分歧通道31的另一側流出通道31c之鄰接於2個延伸通道31c1的通道側壁所形成之共用壁32成為該通道側壁的全部。此外，依據本發明，使三叉分歧通道31的另一側流出通道31c及通氣管2的通道4之相互鄰接的通道側壁所形成之共用壁32成為該通道側壁的全部。
圖17係從下側來顯示消音器單元101之仰視立體圖。
本實施型態中，共用壁32會因溝槽33而為中空的。
本實施型態中，如圖17所示，5個共用壁32會分別因消音器單元101的外面所形成之溝槽33而為中空的。
又，消音器1係由下側組件M1與安裝在下側組件M1之上側組件M2所形成。
排水管構造C中，消音器1係藉由下側組件M1與安裝在下側組件M1之上側組件M2而形成為包含有通氣管2之消音器單元101。
圖18係從上側來顯示下側組件M1之立體圖。
如圖18所示，管狀通道3及通氣管2的通道4係由形成於下側組件M1之溝槽所構成。下側組件M1係於面向上側組件M2之面設置有用以確保與上側組件M2的接合面積之凸緣部34。又，下側組件M1係設置有用以讓上側組件M2嵌合之凸部35。本實施型態中，凸部35係設置於共用壁32的上端面。
圖19係從下側來顯示上側組件M2立體圖。
如圖19所示，消音器1中，上側組件M2為平坦的組件。
如圖19所示，上側組件M2的內面係設置有用以讓上側組件M2嵌合之凹部36。凹部36可藉由嵌合於下側組件M1的凸部35來進行下側組件M1與上側組件M2的對位，且將上側組件M2固定在下側組件M1。另外，本實施型態中，如圖6所示，上側組件M2的表面係設置有肋條37。肋條37除了可補強上側組件M2外，例如，可防止當射出成形上側組件M2時所產生之上側組件M2的撓曲。
傳統排水管構造在來自連接於儲存槽之虹吸排水管的排水時所產生之雜音的抑制這一點，仍然有改善的餘地。
相對於此，排水管構造C係具有連接於流入管120與流出管130之儲存槽10，以及會使流出管130與儲存槽10相連通般地連接於流出管130與儲存槽10之連通部110。
依據排水管構造C，藉由使得儲存槽10與連接於儲存槽10之流出管130透過連通部110而相連通，且藉由使用該連通部110來作為相對於流出管130之通氣管，便可抑制流出管130與儲存槽10之連接部分處，在連同排水而一起吸入空氣時所產生的雜音。如此般地，依據本實施型態，藉由使得作為相對於流出管130之通氣管而使用的連通部110匯流至儲存槽10之新穎構成，便可抑制來自流出管130的排水時所產生之雜音。
於是，排水管構造C便會成為使雜音受到抑制之新穎排水管構造。另外，依據本實施型態，藉由使得連通於流出管130之連通部110匯流於儲存槽10，便可謀求流出管130的通氣道與儲存槽10的通氣道之共通化。於是，本實施型態相關之排水管構造C便會成為可藉由減少配管系統來謀求空間的減少之排水管構造。
又，排水管構造C中，連通部110係具備消音器1，消音器1係具有管狀通道3，管狀通道3係具有連通於流出管130之入口部A1與連通於儲存槽10之出口部A2。此情況下，假設即便是在排水時產生雜音時，仍可藉由消音器1來降低該雜音。於是此情況下，便可更加抑制雜音。
更詳細地敘述，如上所述，若藉由連通部110來使儲存槽10與連接於儲存槽10之流出管130相連通，便可抑制流出管130與儲存槽10之連接部分處在連同排水而一起吸入空氣時所產生之雜音的發生。
然而，藉由連通部110來使儲存槽10與流出管130相連通的情況，會有因連通部110與流出管130之連接部分處在連同排水一起吸入空氣而新產生雜音之疑慮。
然而，實際上，該雜音係小於流出管130與儲存槽10之連接部分處，在連同排水而一起吸入空氣時所產生的雜音。
此外，會有聲音容易在儲存槽10內產生回音的情況。於是，當連通部110與流出管130的連接部分處所產生之雜音經由連通部110而傳播至儲存槽10內，便會因該雜音在儲存槽10內產生回音，而有該雜音從儲存槽10溢漏至外部之疑慮。如此般之雜音的回音程度會依儲存槽10的大小、形狀等而改變。例如，若使儲存槽10的容量變大且該儲存槽10之中央部分的剛性變低之情況，便會有該雜音在儲存槽10內更加發生回音的疑慮。
相對於此，排水管構造C中，連通部110係具備消音器1。此情況下，當連通部110與流出管130之連接部分處在連同排水一起吸入空氣而產生雜音時，經由連通部110所傳播的雜音亦會降低。亦即，依據本實施型態，可藉由讓經由連通部110而傳播至儲存槽10之雜音降低，來抑制該儲存槽10內所產生之雜音的回音。於是，依據本實施型態，便可更加抑制雜音。
又，本實施型態中，消音器1係具備和出口部A2一同連通於儲存槽10之通氣管2。此情況下，可更加抑制傳播至管狀通道3之雜音，即傳播至儲存槽10之雜音。於是，依據本實施型態，便可更有效地抑制雜音。排水管構造C中，係將排氣側通氣管160連接於通氣管2。此情況下，便可使流出管130及儲存槽10的空氣與位在更遠離儲存槽10之外部的空氣相流通。
又，消音器1中，管狀通道3係於入口部A1側具備連接於音源側之三叉分歧通道31，三叉分歧通道31的流入通道31a係連通於入口部A1，三叉分歧通道31的一側流出通道31b係使該一側流出通道31b的末端31be為被封閉的，三叉分歧通道31的另一側流出通道31c係連通於會連接於該音源以外一側之出口部A2。
若三叉分歧通道31的流入通道31a被輸入有來自流出管130的雜音，則該雜音之一部分頻率便會在三叉分歧通道31之一側流出通道31b的末端31be而朝流入通道31a回彈。藉此，便可將被輸入三叉分歧通道31之前述雜音改變為聲音容易衰減的頻域。舉一具體例，可將前述雜音之音壓的峰值由400Hz~600Hz的頻域改變為200Hz~400Hz的低頻域。於是此情況下，便可更有效地抑制雜音。
又，消音器1中，管狀通道3係具備剖面積會小於入口部A1的剖面積SA1之小剖面積部。
傳播至管狀通道3之雜音的音壓若管狀通道3的剖面積愈小，則愈可降低音壓。亦即，連通部110與流出管130之連接部分處在連同排水一起吸入空氣所產生之雜音的音壓若管狀通道3的剖面積愈小，則愈可降低音壓。
依據本實施型態，管狀通道3係具備剖面積會小於入口部A1的剖面積SA1之小剖面積部。藉此，便可降低連通部110與流出管130之連接部分處在連同排水一起吸入空氣所產生之雜音的音壓。於是此情況下，便可更有效地抑制雜音。
又，消音器1中，管狀通道3係具備折返通道3t。
若管狀通道3的長度愈長，便可讓傳播至管狀通道3之雜音的低頻域衰減。亦即，若管狀通道的長度愈長，便可讓連通部110與流出管130之連接部分處在連同排水一起吸入空氣所產生之雜音的低頻域衰減。
依據本實施型態，可藉由管狀通道3會具備折返通道3t，來將該管狀通道3的長度確保為更長。於是此情況下，便可藉由將管狀通道3的長度確保為較長，來讓低頻域的音壓衰減。於是此情況下，便可更有效地抑制雜音。又，可藉由折返通道3t來將管狀通道3的長度確保為較長，藉此謀求消音器單元101(消音器1)整體的小型化，進而謀求排水管構造C整體的小型化。
另外，消音器1係具備連通於出口部A2之通氣管2。此情況下，可更加抑制傳播至管狀通道3之雜音。於是此情況下，便可更有效地抑制雜音。
又，本實施型態中，管狀通道3係於入口部A1側具有三叉分歧通道31，三叉分歧通道31的流入通道31a係連通於入口部A1，三叉分歧通道31的一側流出通道31b係使該一側流出通道31b的末端31be為被封閉的，三叉分歧通道31的另一側流出通道31c係連通於出口部A2，另一側流出通道31c係具有剖面積S31c會小於入口部A1的剖面積SA1之小剖面積部。此情況下，由於可使雜音的頻域改變為聲音容易衰減的頻域，且亦可降低該雜音的音壓，故可更有效地抑制雜音。
又，本實施型態中，管狀通道3係於入口部A1側具有三叉分歧通道31，三叉分歧通道31的流入通道31a係連通於入口部A1，三叉分歧通道31的一側流出通道31b係使該一側流出通道31b的末端31be為被封閉的，三叉分歧通道31的另一側流出通道31c係連通於出口部A2，另一側流出通道31c係具有折返通道3t。此情況下，由於可使雜音的頻域改變為聲音容易衰減的頻域，尤其可讓低頻域的音壓衰減，故可更有效地抑制雜音。
又，本實施型態中，管狀通道3係於入口部A1側具有三叉分歧通道31，三叉分歧通道31的流入通道31a係連通於入口部A1，三叉分歧通道31的一側流出通道31b係使該一側流出通道31b的末端31be為被封閉的，三叉分歧通道31的另一側流出通道31c係連通於出口部A2，另一側流出通道31c係具有剖面積會小於入口部A1的剖面積SA1之小剖面積部，且具有折返通道3t。此情況下，由於可使雜音的頻域改變為聲音容易衰減的頻域，且可降低該雜音的音壓，尤其可讓低頻域的音壓衰減，故可最有效地抑制雜音。
又，本實施型態中，出口部A2係配置於較入口部A1更上側，管狀通道3的底部E3係形成為該管狀通道3的底部E3會朝入口部A1而傾斜至下側。本實施型態中，如上所述，係以角度α1及角度α2而傾斜。此情況下，便可抑制來自入口部A1之液體的流入，又假設，即便是有洗淨水等液體流入，仍可使其容易地從入口部排出。亦即，此情況下，可抑制液體的流入及滯留。尤其在本實施型態中，管狀通道3係以折返通道3t為基點而以角度α0折返。藉此，本實施型態中，三叉分歧通道31的流入通道31a、另一側流出通道31c(鄰接通道31c1)及通氣管2的通道4如圖12所示，在俯視觀看下，便會分別相對於入口部A1的中心軸O1而以角度α1×(1/2)傾斜。此情況下，假設縱使液體流入至管狀通道3，仍可將該液體朝入口部A1引導。
又，本實施型態中，連通部110係具有連接於流出管130與消音器1之流出管側配管部140，以及連接於消音器1與儲存槽10之儲存槽側配管部150，流出管側配管部140為從流出管130立起於上方之彎管，儲存槽側配管部150為相對於流出管130而平行地延伸之直管。此情況下，便可抑制來自入口部A1之液體的流入，又，假設縱使有液體流入，仍可使其容易地從入口部A1排出。亦即，此情況下，可抑制液體的流入及滯留。又，此情況下，由於連通部110為小型的配管構成，故可謀求排水管構造C整體的小型化。
又，本實施型態中，三叉分歧通道31的分歧部31J為T字形。此情況下，藉由三叉分歧通道31的流入通道31a與三叉分歧通道31的一側流出通道31b會相互地匯流於一直線上，便可有效地抵消從流入通道31a所輸入之雜音，和從三叉分歧通道31的一側流出通道31b回彈之該雜音。於是此情況下，便可更有效地抑制雜音。
又，本實施型態中，流出管130為虹吸排水管。流出管130為相對於水平方向而配置為幾乎無傾斜狀態之虹吸排水管。虹吸排水管如上所述，會有與儲存槽10之連接部分在連同排水一起吸入空氣，因而產生雜音的情況。此情況下，便可有效地抑制雜音。
又，本實施型態中，在消音器1中，管狀通道3係具有透過折返通道3t而連通之2個延伸通道，2個延伸通道之相互鄰接的通道側壁為共用壁32。此情況下，便可謀求消音器1整體的小型化。
又，本實施型態中，消音器1中，共用壁32會因溝槽33而為中空的。此情況下，便可藉由射出成形來容易製造消音器1。尤其在本實施型態中，消音器1係和通氣管2一同形成消音器單元101。於是，本實施型態中，便可藉由射出成形來連同消音器1一起容易地製造通氣管2而作為消音器單元101。
又，本實施型態中，消音器1係由下側組件M1，及被安裝在下側組件M1之上側組件M2所形成。此情況下，藉由以2個組件來形成下側組件M1與上側組件M2，便可分別將下側組件M1與上側組件M2射出成形。
又，本實施型態中，在消音器1中，上側組件M2為平坦的組件。此情況下，由於可將下側組件M1與上側組件M2的安裝面(接合面)的位置設定在較高位置，故可抑制液體經由該安裝面而溢漏。
[排水管的清掃方法]
接下來，參照上述排水管構造C來針對排水管的清掃方法加以說明。
本實施型態中，排水管的清掃方法係一種藉由使洗淨液流通於透過連接配管部而連接有通氣管之排水管，來進行該排水管的清掃之排水管的清掃方法。
本實施型態中，排水管的清掃方法係包含有藉由將設置有封閉組件之棒狀組件插入至該通氣管的通道，而以該封閉組件來封閉形成於該通氣管且連通於該連接配管部的開口部之步驟(以下亦稱作｢開口部封閉步驟｣。)，以及，在封閉該開口部後，使洗淨液流通於該排水管的該通道之步驟(以下亦稱作｢洗淨液流通步驟｣。)。
參照上述排水管構造C，本實施型態中，該通氣管為消音器單元101的通氣管2。此範例中，該通氣管亦包含有排氣側通氣管160。又，本實施型態中，該連接配管部係由排水管側配管部140、消音器單元101、儲存槽側配管部150及排氣側通氣管160所構成。又，本實施型態中，該開口部為消音器1的出口部A2。
設置有該封閉組件之棒狀組件為可插入至配管內之纜線工具。作為該棒狀組件的具體例舉例有單線或多股線的纜線。該線當然包括金屬製纜線，且亦包括合成樹脂製纜線。該封閉組件的具體例舉例有會將毛線等線狀組件結成束之刷子、橡膠等彈性組件、或海綿等多孔質組件。
圖20係用以說明開口部封閉步驟之圖3的剖面放大圖。
圖20中，符號50為棒狀組件。此範例中為金屬製纜線。此範例中，棒狀組件50係具可撓性。符號51為封閉組件。此範例中，封閉組件51為刷子。
如圖20所示，開口部封閉步驟中，係藉由將棒狀組件50插入至通氣管2的通道4，來以封閉組件51封閉消音器1的出口部A2。
圖21係用以說明洗淨液流通步驟之圖1的F-F剖面圖。
圖21中，符號60為具備高壓洗淨噴嘴61之高壓洗淨用軟管。此範例中，軟管60係具可撓性。高壓洗淨用軟管60當然包括合成樹脂製軟管，且亦包括金屬製軟管。
將消音器1的出口部A2封閉後，如圖21所示，在洗淨液流通步驟中，係將高壓洗淨噴嘴61插入至流出管130的通道。洗淨液會從高壓洗淨噴嘴61以高壓狀態朝向流出管130的下游被噴射。藉此，便可將流出管130加以清掃。
如上所述，依據本實施型態，在開口部封閉步驟中，係藉由將棒狀組件50插入至通氣管2的通道4，而以該棒狀組件50所設置之封閉組件51來封閉通氣管2所形成之消音器1的出口部A2。藉此，便可從連通於流出管130之通道來將該通氣管2的通道4加以阻隔。接下來，依據本實施型態，在封閉出口部A2後，於洗淨液流通步驟中，會使洗淨液流通於流出管130的通道。藉此，便可洗淨流出管130的通道來進行該流出管130的清掃。該洗淨液可藉由將高壓洗淨噴嘴61插入至流出管130的通道，而從該高壓洗淨噴嘴61來使其噴射至流出管130的通道內。
依據本實施型態，來自流出管130的洗淨液便會因封閉組件51而變得無法流入至通氣管2。於是，依據本實施型態相關之排水管的清掃方法，則可不會讓洗淨液流入至通氣管2而進行排水管的清掃。
又，如圖21所示，本實施型態之排水管的清掃方法中，通氣管2係位在高於流出管130之位置處。此情況下，便可更加確實地防止洗淨液朝通氣管2流入，又，假設即便是洗淨液流入，仍可使其容易排出。亦即，此情況下，便可抑制洗淨液的流入及滯留。
又，如圖20所示，本實施型態之排水管的清掃方法中，通氣管2係從通氣管2所形成之棒狀組件50的插入口到消音器1的出口部A2為止的區間而水平地延伸。此情況下，由於到連通於消音器1之出口部A2為止的區間不會產生段差，故封閉組件51會容易通過通氣管2的通道4。亦即，為了進行流出管130的清掃，可容易進行將連通於消音器1之出口部A2加以封閉之作業。於是此情況下，便可容易進行流出管130的清掃。
又，如圖20所示，本實施型態之排水管的清掃方法中，封閉組件51為刷子。此情況下，刷子係具柔軟性，而容易使封閉組件51於通氣管2的通道4通過。於是，便可容易進行將連通於消音器1之出口部A2加以封閉之作業。於是此情況下，便可容易進行流出管130的清掃。又，此情況下，便可刮除附著在通氣管2的通道4(亦包括排氣側通氣管160的通道。)之液體、垃圾等污垢。於是此情況下，便亦可和流出管130一起進行通氣管2的清掃。又，該刷子較佳為具有吸水性者。此情況下，由於可去取附著在通氣管2的通道4之洗淨液等液體，故可有效地進行通氣管2的清掃。
又，如圖20所示，本實施型態之排水管的清掃方法中，通氣管2係在該通氣管2的通道4之挾置著連通於消音器1之出口部A2而與棒狀組件50的插入口為相反側的位置處，會具有可抵接棒狀組件50之插入限制部151。此情況下，可僅藉由使得棒狀組件50通過通氣管2的通道4之簡單作業，來如圖20所示般地將封閉組件51定位在用以封閉出口部A2之適當位置。亦即，可容易進行為了進行流出管130的清掃而將連通於消音器1之出口部A2加以封閉之作業。於是此情況下，便可容易進行流出管130的清掃。如圖4所示，本實施型態中，插入限制部151為儲存槽側配管部150的末端部。本實施型態中，儲存槽側配管部150為該末端部被封閉之圓筒組件。儲存槽側配管部150係形成有連通於儲存槽10之開口部A4。此外，插入限制部151並未侷限於本實施型態般之作為密封壁的末端部。例如，可使插入限制部151為儲存槽側配管部150所設置的突起。
又，如圖20所示，本實施型態之排水管的清掃方法中，該連接配管部係具有消音器1。此情況下，便可容易進行連接於消音器1之流出管130的清掃。
又，如圖21所示，本實施型態之排水管的清掃方法中，流出管130係連接於儲存槽10，通氣管2係連接於與儲存槽10相同的儲存槽。此情況下，藉由集中複數通氣管來減少該複數通氣管的數量，便可進行流出管130的清掃。
又，本實施型態之排水管的清掃方法中，流出管130為虹吸排水管。
通氣管一般來說並未被想定能夠讓水通過，最好是水不會流入及滯留。尤其在本實施型態中，流出管130為該流出管130係相對於水平方向而配置為幾乎無傾斜狀態的橫向虹吸排水管。此情況下，由於充滿該虹吸排水管的排水會成為高壓洗淨水的阻力，故該高壓洗淨水等至流入通氣管2之疑慮會變得更深。因此，當流出管130為虹吸排水管的情況對於抑制洗淨液的流入及滯留來說為有效的。
[配管接頭]
此外，若使2個上游配管匯流於1個下游配管，便可藉由減少配管系統來謀求省空間化。
然而，當從下游配管來插入清掃工具的情況，會難以選擇所需的上游配管來插入該清掃工具。
圖22係顯示使得2個系統的上游配管匯流於1個下游配管之情況下，作為較佳配管接頭一範例之配管接頭20的俯視圖。又，圖23係顯示配管接頭20之前視圖。另外，圖24係顯示配管接頭20之後視圖。另外，圖25為圖23之G-G剖面圖。
如圖22所示，配管接頭20係具有可連接於第1上游配管之第1上游配管部21、可連接於第2上游配管之第2上游配管部22、以及可連接於1個下游配管之下游配管部23。又，如圖25所示，第1上游配管部21的通道21a與第2上游配管部22的通道22a係連通於下游配管部23的通道23a。另外，第1上游配管部21係相對於下游配管部23而指向與該下游配管部23相同方向般地被賦予方向。
具體而言，第1上游配管部21的通道延伸軸線O21係相對於下游配管部23的通道延伸軸線O23而在水平方向上平行地相距ΔY。
依據配管接頭20，例如，若使用直線狀的棒狀清掃工具來作為從下游配管部23被插入的清掃工具，便可將該清掃工具容易插入至第1上游配管部21及第2上游配管部22當中相對於下游配管部23為平行的第1上游配管部21。又，依據配管接頭20，例如，若使用具有捲繞特性的棒狀清掃工具來作為從下游配管部23被插入的清掃工具，便可將該清掃工具容易插入至第1上游配管部21及第2上游配管部22當中相對於下游配管部23並非平行的第2上游配管部22。於是，依據配管接頭20，不須目視第1上游配管部21及第2上游配管部22，便可由該第1上游配管部21及第2上游配管部22當中來容易地選擇用以插入該清掃工具之所需的上游配管部。於是，依據配管接頭23，則不須目視匯流於1個下游配管部23之第1上游配管部21及第2上游配管部22的2個上游配管部，便可從該2個上游配管部當中，來容易地選擇用以插入清掃工具等之所需的上游配管部。
又，配管接頭23中，第2上游配管部22較佳宜指向會相對於第1上游配管部21而構成銳角的角度α12之方向般地被賦予方向。此情況下，藉由從下游配管部23來朝第1上游配管部21及第2上游配管部22插入清掃工具等會變得容易，便可更容易地選擇所需的上游配管部。
又，配管接頭20中，銳角的角度α12為15°~25°之範圍的角度。此情況下，便可容易地插入更多不同尺寸的清掃工具等。
又，配管接頭20中，第1上游配管部21的通道延伸軸線O21係如上所述般地相對於下游配管部23的通道延伸軸線O23而為偏移的。此情況下，可藉由調整第1上游配管部21的通道延伸軸線O21與下游配管部23的通道延伸軸線23之間隔，來容易地將清掃工具等被插入至第1上游配管部21之插入容易度與該清掃工具等被插入至第2上游配管部22之插入容易度的平衡設定為所需的平衡。
[配管的清掃方法]
圖26係放大顯示具備配管接頭20之配管200的剖面圖。
圖26中，符號210為配管接頭20的第1上游配管部21所連接之第1上游配管210。符號220為配管接頭20的第2上游配管部22所連接之第2上游配管220。另外，符號230為配管接頭20的下游配管部23所連接之下游配管230。
配管200可藉由以下的方法來清掃所需的上游配管。
配管200的清掃方法係將棒狀組件插入至配管200來進行配管200的清掃之配管的清掃方法。該清掃方法係包括從下游配管230來插入該棒狀組件之步驟。
此範例中係使用清掃工具70來作為該棒狀組件。清掃工具70為可插入至配管200內之纜線工具。此範例中，清掃工具70係由具備刷具72之棒狀組件71所構成。棒狀組件71的具體例舉例有單線或多股線的纜線。該纜線當然包括金屬製纜線，且亦包括合成樹脂製纜線。可將刷具72作為上述封閉組件61。
依據本實施型態，例如，若使用直線狀的清掃工具70A來作為從下游配管230被插入的清掃工具70，便可容易將該清掃工具70A插入至第1上游配管210及第2上游配管220當中相對於下游配管230為平行的第1上游配管210。又，若使用具有捲繞特性之清掃工具70B來作為從下游配管230被插入的清掃工具70，便可容易將該清掃工具70B插入至第1上游配管210及第2上游配管220當中相對於下游配管230並非平行的第2上游配管220。於是，依據具備配管接頭20之配管200的清掃方法，則不須目視第1上游配管210及第2上游配管220，便可從該第1上游配管210及第2上游配管220當中來容易地選擇用以插入清掃工具70之所需的上游配管。於是，依據配管200的清掃方法，不須目視匯流於1個下游配管之2個上游配管，便可從該2個上游配管當中來容易地選擇用以插入清掃工具等之所需的上游配管。
又，具備配管接頭20之配管200的清掃方法可使用直線狀的清掃組件70A與具有捲繞特性之清掃組件70B中的至少任一者來作為清掃組件70。此情況下，將清掃工具70插入至第1上游配管210之情況，若使用直線狀的清掃組件70A來作為該清掃工具，便可更容易地選擇所需的第1上游配管210。又，將清掃工具70插入至第2上游配管220之情況，若使用具有捲繞特性之清掃組件70B來作為該清掃工具70，便可更容易地選擇所需的第2上游配管220。於是此情況下，便可更容易地選擇所需的上游配管。
又，若將配管200的第1上游配管210及第2上游配管220之任一者作為上述排水管構造C的排氣側通氣管160，則藉由從設置於下游配管230之插入口230來插入設置有封閉組件51之棒狀組件50，便可進行流出管130的清掃。
[使用配管200之排水管的清掃方法]
配管200的清掃方法為一種會進行排水管構造C之流出管130的清掃之排水管的清掃方法。此情況下，可使通氣管2為第1上游配管210或第2上游配管220當中的任一者。藉此，藉由從下游配管230的通道230a通過配管接頭20來將設置有封閉組件51之棒狀組件50插入至通氣管2的通道4，便可以封閉組件51來封閉連通於消音器1之出口部A2。
圖27係顯示公寓等集合住宅所鋪設之配管構造一範例的俯視圖。
圖27中，符號W為將專有部與共用部加以區隔之外壁。符號DP1~DP4為排水管。此範例中，排水管DP1為廚房系統的排水管。又，排水管DP2為洗臉系統的排水管。又，排水管DP3為洗衣系統的排水管。另外，排水管DP4為浴室系統的排水管。此範例中，排水管DP4為與連接於儲存槽10之流出管130相同的排水管，或連接於流出管130之排水管。
又，圖27之範例中，係包括由配管200所構成之排氣系統的通氣管。此範例中，第1上游配管210為浴室系統的通氣管，又，第2上游配管220為洗衣室系統的通氣管。圖27的各系統係分別設置有用以插入清掃工具等之插入口。符號240為配管200所設置之排氣系統的插入口。
上述排水管構造C為浴室系統的排水管構造。
將配管200連接於通氣管2之流出管130的清掃方法如上所述，係包括：從下游配管230的通道通過配管接頭20來將設置有封閉組件51之棒狀組件50插入至通氣管2的通道4，藉此以封閉組件51來封閉通氣管2所形成之消音器1的出口部A2之步驟，以及在封閉出口部A2後，使洗淨液流通於流出管130的通道之步驟。
依據上述清掃方法，在該開口部封閉步驟中，係將棒狀組件50插入至配管200所形成之插入口240。此時，若使用直線狀的棒狀組件來作為棒狀組件50，則棒狀組件50便會因配管接頭20而選擇第1上游配管210來被插入至通氣管2的通道。亦即，由於第1上游配管210係相對於下游配管230而指向與該下游配管230相同方向般地被賦予方向，故可容易進行為了進行流出管130的清掃而封閉連通於該連接配管部5的出口部A2之作業。藉此，便可藉由該棒狀組件50所設置之封閉組件51，來封閉消音器單元101的通氣管2所形成之消音器1的出口部A2。藉此，與前述同樣地，可從流出管130的通道來阻隔該通氣管2的通道4。在封閉出口部A2後，於洗淨液流通步驟中，係從浴室系統的排水管DP4所形成之插入口250來插入具有高壓洗淨噴嘴61之高壓洗淨用軟管60，以使洗淨液流通於流出管130的通道。藉此，便可洗淨流出管130的通道來進行該流出管130的清掃。
如上所述，藉由將配管200連接於通氣管2之流出管130的清掃方法，亦可藉由封閉組件51來使來自流出管130的洗淨液變得不會流入至通氣管2。於是，依據上述流出管130的清掃方法，便不會讓洗淨液流入至通氣管2，而可進行流出管130的清掃。
此外，將配管200連接於通氣管2之流出管130的清掃方法中，若使用具有撓曲特性的棒狀組件50來作為棒狀組件50，便可將棒狀組件50插入至第2上游配管220。此外，此處｢撓曲特性｣係指會因以捲繞狀態來保管棒狀組件而殘留有撓曲變形之性質。此外，此處｢具有撓曲特性的棒狀組件｣係包括具有被預先賦予的彎曲形狀之棒狀組件。
[可應用本發明之排水系統]
圖46係以部分剖面來顯示可應用本發明之排水系統一範例的概略系統圖。圖46中，符號100為可應用本發明一實施型態相關的儲存槽之排水系統一範例。本例中，排水系統100為虹吸排水系統。虹吸排水系統為利用虹吸原理之排水系統。依據虹吸排水系統，則在進行來自用水機器的排水之際，便可藉由虹吸排水管所產生的虹吸力來促進該排水。虹吸排水系統係被採用來作為例如1棟建物被區劃為複數樓層之集合住宅的排水系統。
本例中，排水系統100係具有用水器具EW、器具排水管120、儲存槽10及虹吸排水管130。
用水器具EW係配置於建物的各樓層。用水器具EW舉例有為例如浴缸(例如系統衛浴)、洗臉台、流理台。本例中，用水器具EW為浴缸。
器具排水管120係連接用水器具EW與儲存槽10。本例中，器具排水管120係配置於地板下空間S內。本例中，地板下空間S為建築物的地板組件FM與樓板FS間所形成之空間。又，本例中，器具排水管120係由延伸於縱向之上游側部分120a與延伸於橫向之下游側部分120b所構成。上游側部分120a係連接於用水器具EW。下游側部分120b連接於上游側部分120a。本例中，下游側部分120b係隨著從上游側部分120a朝向下游而傾斜至下方。下游側部分120b係連接於儲存槽10。此外，本例中，下游側部分120b的中途係介設有排水阱121。
虹吸排水管130係連接儲存槽10與立管VP。立管VP為於上下方向貫穿建物的各樓層之排水管。本例中，虹吸排水管130係由配置於地板下空間S內之橫向管130a與貫穿樓板FS且垂下下方之豎管130b所構成。橫向管130a係連接於儲存槽10。本例中，橫向管130a係幾乎呈水平而無傾斜般地延伸於橫向。詳細地說明，係沿著設置有用水器具EW之樓層的樓板FS而以略水平的無傾斜來被加以配管。豎管130b係連接於橫向管130a。豎管130b係透過管接頭CJ而連接於立管150。詳細地說明，豎管130b係延伸至橫向管130a的略垂直下方而形成垂下部，來讓虹吸力(例如負壓力)產生。
本例之排水系統100中，首先，係藉由用水器具EW的流出口與虹吸排水管130的橫向管130a之高低差H1來讓液體從用水器具EW流出。從用水器具EW流出後的液體(例如水)會因該液體的自重(下降壓力)而從器具排水管120流入至儲存槽10。儲存槽10會一邊將液體的一部分儲存在內部，一般使剩餘的液體流出至虹吸排水管130。
本例中，虹吸排水管130會形成藉由虹吸力來讓吸引力產生之虹吸排水道。虹吸排水道中，可藉由虹吸排水管130內所產生之虹吸力以促進來自虹吸排水管130之液體的排水。
本例之虹吸排水道中，係藉由用水器具EW的流出口與虹吸排水管130的橫向管130a之高低差H1所致之來自用水器具EW之排水的下降壓力，來讓水充滿器具排水管120及虹吸排水管130的橫向管130a，且藉由虹吸排水管130的橫向管130a會充滿水，來讓到達該虹吸排水管130的豎管130b(垂下長H2)之排水在該豎管130b開始落下，而藉由虹吸排水管130的橫向管130a會成為滿水狀態來讓虹吸作用產生。藉由虹吸排水道內所產生之高速流動來將上述虹吸作用作為排水動力，而進行來自用水器具EW的排水，則排水便會朝管接頭CJ的內部被順暢且迅速地釋放。
本例中，由於採用虹吸排水系統來作為排水系統100，故排水管內部會成為被充填為滿水狀態之滿流排水。如此般地，若採用虹吸排水系統來作為排水系統100，由於液體的排水會成為滿流排水，故可防止固形物附著在管內，且可使用小口徑的管。又，本例中，由於係採用虹吸排水系統來作為排水系統100，故可以無傾斜來配置排水管。如此般地，若採用虹吸排水系統來作為排水系統100，便可以無傾斜來配置排水管，藉此便可降低供配置排水管之地板下的空間高度。又，本例中，由於係採用虹吸排水系統來作為排水系統100，故可加長從排水源(例如各種用水器具EW)到立管VP的延長距離(例如從用水器具EW的流出口到虹吸排水管130的豎管130b之水平長度L，參照圖44)，進而可提高起居室空間配置的自由度。
此外，在採用虹吸排水系統之排水系統100中，設想會從用水器具EW來一次進行大量液體的排水，而於器具排水管120與虹吸排水管130之間設置有儲存槽10。儲存槽10係直到排水的促進(虹吸力的產生)開始的期間，可暫時地儲存從用水器具EW一次被排出之大量的水。
[例示性儲存槽]
圖28係從上方來顯示例示性儲存槽10A的流入側之立體圖。圖29係從上方來顯示圖28之儲存槽10A的流出側之立體圖。儲存槽10A係具有能夠讓液體流入之流入口A11與能夠讓該液體流出之流出口A12，可將從流入口A11流入的該液體儲存在內部。
圖30係從流入側來顯示儲存槽10A之前視圖。又，圖31係從流出側來顯示儲存槽10A之後視圖。如圖31所示，儲存槽10A係具有底壁11、相對於底面而立起之周壁12、以及相對於底面而立起之2個區隔壁13。本實施型態中，儲存槽10A係具有頂壁14。頂壁14係與周壁12的上端相連接。藉此，儲存槽10A的內部便會形成有藉由底壁11、周壁12及頂壁14所區劃之空間。此外，儲存槽10A中，周壁12係形成有通氣口H12。通氣口H12會使儲存槽10A的內部空間與外界連通。藉此來防止儲存槽10A的內部成為負壓。
圖32係從上方來顯示儲存槽10A之俯視圖。圖33係從下方來顯示儲存槽10A之仰視圖。如圖33所示，儲存槽10A中，周壁12係具備形成有流入口A11之流入口部分12a，以及，與流入口部分12a呈對向且形成有流出口A12之流出口部分12b。此範例中，周壁12係具有流入口部分12a、流出口部分12b、與流入口部分12a相鄰接之流入側鄰接部分12c、與流出口部分12b相鄰接之流出側鄰接部分12d、以及側面部分12e。另外，此範例中，周壁12係具有會連接流入側鄰接部分12c與側面部分12e之流入側角落部分12f，以及會連接側面部分12e與流出側鄰接部分12d之流出側角落部分12。
如圖33所示，儲存槽10A中，底壁11係藉由周壁12而被加以區劃。如圖32所示，頂壁14亦與底壁11同樣地，係藉由周壁12而被加以區劃。此外，此範例中，頂壁14係具有2個開口部A13。開口部A13會使儲存槽10A的內部空間與外界連通。又，此範例中，周壁12係在頂壁14側而於流入側角落部分12f及流出側角落部分12g的各位置處具有凹陷部12h。
圖34為圖30之A-A剖面圖。圖34為儲存槽10A的最大剖面。圖35為圖30之B-B剖面圖。圖35為通過流入口A11的中心Oa之剖面。圖36為圖31之C-C剖面圖。圖36為通過流出口A12的中心Ob之剖面。如圖34等所示，儲存槽10A係具有在流入口A11與流出口A12間延伸之液體通過區域R1，以及，在挾置著液體通過區域R1之兩側的各位置所配置之液體滯留區域R2。儲存槽10A中，液體通過區域R1係連結流入口A11與流出口A12，來將從流入口A11流入的液體引導至流出口A12。液體通過區域R1在俯視觀看下亦可曲線狀或蜿蜒狀地延伸。此範例中，液體通過區域R1如圖34~圖36所示，係直線狀地延伸。藉此，液體通過區域R1便會成為連結流入口A11與流出口A12之最短路徑來作為液體通過路徑。
另一方面，如圖34等所示，2個液體滯留區域R2係配置於挾置著液體通過區域R1之兩側的各位置處，且為與液體通過區域R1相鄰接之位置處。2個液體滯留區域R2可分別讓從流入口A11流入的液體滯留。
又，如圖34等所示，儲存槽10A中，周壁12的流入口部分12a係較與流入口部分12a相鄰接之流入側鄰接部分12c更為凹陷至流出側。此範例中，如圖34等所示，周壁12的流入側鄰接部分12c係透過2個流入側角落部分12j及12i而連接於流入口部分12a。
又，儲存槽10A中，周壁12的流出口部分12b係較流出側鄰接部分12d更為突出至流出側。此範例中，如圖34等所示，周壁12的流出側鄰接部分12d係連接於流出口部分12b。
圖37係顯示儲存槽10A的右側面之右側視圖。圖38係顯示儲存槽10A的左側面之左側視圖。如圖37等所示，儲存槽10A中，流入口A11係位在較周壁12之除了流入口部分12a及流出口部分12b以外的周壁12而更為下側。流出口A12亦與流入口A11同樣地，係位在較周壁12之除了流入口部分12a及流出口部分12b以外的周壁12而更為下側。
圖39為圖32之D-D剖面圖。圖39為將儲存槽10A二等分之剖面。圖39係顯示儲存槽10A的內部中之液體通過區域R1與液體滯留區域R2的內部構造。圖40為圖32之E-E剖面圖。圖40係顯示儲存槽10A的內部中之液體滯留區域R2的內部構造。如圖39所示，儲存槽10A中，流入口A11係由形成於周壁12的流入口部分12a之流入道P1所構成。又，流出口A12係由形成於周壁12的流出口部分12b之流出道P2所構成。儲存槽10A中，液體通過區域R1係由周壁12之流入口部分12a的內面12fa、底壁11當中之該底壁11之下側部分11a的內面(底面)11fa、以及周壁12之流出口部分12b的內面12fb所構成。儲存槽10A中，如圖39所示，液體通過區域R1的底面F1係由平坦面所構成。此範例中，液體通過區域R1的底面F1係由周壁12之流入口部分12a的內面12fa當中之該內面12fa的最下端(流入口部分12a之延伸於液體流通方向之最下側的延伸端)12fa1、底壁11之下側部分11a的內面11fa當中之該內面11fa的最下端(下側部分11a之延伸於液體流通方向之最下側的延伸端)12fa1、以及周壁12之流出口部分12b的內面12fb當中之該內面12fb的最下端(流出口部分12b之延伸於液體流通方向之最下側的延伸端)最下端12fb1所構成。
此外，圖39中，符號12fP1為流入道P1的最下端(流入道P1之延伸於液體流通方向之最下側的延伸端)。又，符號12fp2為流出口部分12b所形成之流出道P2的最下端(流出道P2之延伸於液體流通方向之最下側的延伸端)。如圖39等所示，儲存槽10A中，底壁11之下側部分11a的最下端(底面)11fa1係朝向下游而傾斜至下方，流出口A12係設置於較流入口A11更低之位置處。
另一方面，如圖34等所示，2個液體滯留區域R2在俯視觀看下，係分別藉由周壁12中除了流入口部分12a及流出口部分12b以外之周壁12，以及液體通過區域R1而被加以區劃。詳細地說明，2個液體滯留區域R2在俯視觀看下，係分別藉由流入側角落部分12i的內面12fi、流入側角落部12j的內面12fj、流入側鄰接部分12c的內面12fc、流入側角落部分12f的內面12ff、側面部分12e的內面12fe、流出側角落部分12g的內面12fg、流出側鄰接部分12d的內面12fd、液體通過區域R1而被加以區劃。另外，如圖41等所示，2個液體滯留區域R2係分別由底壁11當中之該底壁11之上側部分11b的內面(底面)11fb與頂壁14的內面(天面)14f所構成。此外，儲存槽10A中，如圖40所示，液體滯留區域R2的底面F2係由平坦面所構成。本實施型態中，液體滯留區域R2的底面F2係由底壁11之上側部分11b的內面11fb所構成。
圖41係從流入側來顯示圖32的F-F剖面之立體圖。F-F剖面為包含有頂壁14之2個開口部A13的中心軸之平面的剖面。如圖41所示，液體通過區域R1係配置有溝部G。溝部G係配置於流入口A11與流出口A12之間。如圖41等所示，儲存槽10A中，溝部G的一部分係藉由底壁11之下側部分11a的內面11fa而成形。儲存槽10A中，底壁11的下側部分11a係相對於底壁11的上側部分11b而為凹陷的。此範例中，底壁11之下側部分11a的內面11fa係由最深面11fa1與2個側面11fa2所構成。最深面11fa1為底壁11中最深的面(最下端)。最深面11fa1係透過側面11fa2而連接於底壁11之上側部分11b的內面11fb。最深面11fa1係藉由從液體通過區域R1的延伸方向觀看為曲線之曲面而連接於側面11fa2。側面11fa2係藉由從液體通過區域R1的延伸方向觀看為曲線之曲面而連接於上側部分11b的內面11fb。
又，儲存槽10A中，溝部G的一部分係藉由周壁12之流出口部分12b的內面12fb而成形。如圖31等所示，儲存槽10A中，周壁12的流出口部分12b係以流出口A12會成為較流出側鄰接部分12d更下側的位置之方式而延伸至下側。如圖41所示，此範例中，周壁12之流出口部分12b的內面12fb係包含最深面12fb1與2個側面12fb2。最深面12fb1係藉由從液體通過區域R1的延伸方向觀看為曲線之曲面而連接於側面12fb2。側面12fb2係與底壁11之下側部分11a的側面11fa2而構成同一平面。最深面12fb1為周壁12之流出口部分12b的內面12fb當中之最深的面(最下端)。最深面12fb1係與底壁11之下側部分11a的最深面11fa1而構成同一平面。又，最深面12fb1係透過側面12fb2而連接於區隔壁13的內面13f1。側面12fb2係與區隔壁13的內面13f1而構成同一平面。
再者，如圖35等所示，儲存槽10A中，溝部G的一部分係藉由周壁12之流入口部分12a的內面12fa而成形。如圖30等所示，儲存槽10A中，周壁12的流入口部分12a係以流入口A11會成為較流入側鄰接部分12c更下側的位置之方式而延伸至下側。如圖35所示，此範例中，周壁12之流入口部分12a的內面12fa係由最深面12fa1與2個側面11fa2所構成。最深面12fa1係藉由從液體通過區域R1的延伸方向觀看為曲線之曲面而連接於側面12fa2。側面12fa2係與底壁11之下側部分11a的側面11fa2而構成同一平面。如圖39等所示，最深面12fa1為周壁12之流入口部分12a的內面12fa當中之最深的面(最下端)。最深面12fa1係與底壁11之下側部分11a的最深面11fa1而構成同一平面。又，如圖35等所示，最深面12fa1係透過側面12fa2而連接於流入側角落部分12i的內面12fi。
如圖36等所示，2個區隔壁13係朝流出口A12延伸。在儲存槽10A中，會確保流出口A12般地朝流出口A12延伸。此處，｢會確保流出口A12｣係指｢未封閉流出口A12的開口｣。
又，如圖39所示，儲存槽10A中，區隔壁13係具有該液體可自該區隔壁13溢流之高度H13。此範例中，區隔壁13的高度H13為自液體通過區域R1的底面F1起之高度。藉此，通過液體通過區域R1之液體當該液體的水頭成為一定以上，便可流至液體滯留區域R2。
又，如圖39等所示，儲存槽10A中，區隔壁13的高度H13會隨著朝向流出口A12而變高。如圖39等所示，此範例中，區隔壁13的頂面13f2為側面觀看的剖面形狀會朝流出側凸出之曲線所構成的曲面。如圖39所示，此範例中，區隔壁13之頂面13f2的曲線係由曲率半徑R13所構成。
儲存槽10A中，區隔壁13係構成為周壁12之流出口部分12b的一部分。區隔壁13係自與溝部G相鄰接之位置而立起。圖42係從流入側來顯示圖32的G-G剖面之立體圖。G-G剖面為包含周壁12與底壁11的邊界之平面的剖面。如圖42等所示，儲存槽10A中，區隔壁13的內面13f1係連接於周壁12之流出口部分12b的內面12fb當中之該內面12fb的側面12fb2，且與該側面12fb2而構成同一平面。又，儲存槽10A中，與周壁12的流出口部分12b相鄰接之該周壁12之流出側鄰接部分12d的內面12fd係連接於區隔壁13的頂面13f2，且與該區隔壁13的頂面13f2而形成同一面。此處，｢同一面｣係指｢滑順地連接之連續的面｣，而亦包含｢平面｣及｢曲面｣任一者的面。
圖43為圖32之H-H剖面圖。如圖43所示，儲存槽10A中，區隔壁13之頂面13f2的端緣部13e為朝儲存槽10A的內部凸出之曲面。
又，如圖40所示，儲存槽10A中，周壁12之流出側鄰接部分12d的內面12fd為側面觀看的剖面形狀會朝流出側凸出之曲線所構成的曲面。如圖40所示，本實施型態中，關於流出側鄰接部分12d的內面12fd，底壁11側的曲線係由較大的曲率半徑Rd12所構成。此範例中，曲率半徑Rd12係與形成區隔壁13之頂面13f2的曲線之曲率半徑R13相同。另一方面，頂壁14側的曲線係由小於底壁11側的曲線之曲率半徑Rd14所構成。
本案發明人經過苦心實驗研究的結果，發現虹吸排水系統所使用之儲存槽中，當迅速地提高該儲存槽之流出口附近的液體水頭之情況，便可讓大量液體迅速且順暢地流出，進而可縮短直到虹吸力產生為止的時間。本實施型態相關之儲存槽10A係著眼於迅速地提高流出口A12附近的液體水頭之情況，則可讓大量液體迅速且順暢地流出而完成的發明。
如圖39等所示，儲存槽10A為一種具有能夠讓液體流入的流入口A11與能夠讓該液體流出的流出口A12，且可將從流入口A11流入的該液體儲存在內部之儲存槽。儲存槽10A係具有相對於底面而立起之周壁12，以及相對於底面而立起之2個區隔壁13，周壁12係具備形成有流入口A11之流入口部分12a，以及與流入口部分12a呈對向且形成有流出口A12之流出口部分12b。2個區隔壁13係朝流出口A12延伸。
依據儲存槽10A，藉由設置有區隔壁13，如箭頭D1所示般地，便可確保液體朝流出口A12的流動，且迅速地提高流出口A12附近的液體水頭。即便是從流入口A11流入的該液體(排水)為少量之情況，依據儲存槽10A，仍可藉由於儲存槽10A內設置有區隔壁13，來迅速地提高流出口A12附近的液體水頭，結果便可使虹吸啟動變得容易發生。例如，即便是液體從流入口A11大量地流入之情況，在最初的階段中，到達流出口A12附近之液體仍為少量。如此般地，即便是流出口A12附近的液體為少量，依據儲存槽10A，仍可藉由於儲存槽10A內設置有區隔壁13，來迅速地提高流出口A12附近的液體水頭，結果便可使虹吸啟動變得容易發生。於是，依據本實施型態相關之儲存槽10A，便可讓大量液體迅速且順暢地流出。尤其是如儲存槽10A般地，若將儲存槽10A使用於虹吸排水系統，則即便是排出大量液體的情況，仍可縮短直到虹吸力產生為止的時間。
又，如圖39所示，儲存槽10A中，區隔壁13係具有該液體可自該區隔壁13溢流之高度H13。此情況下，當流出口A12附近的液體水頭成為一定以上，則如圖42等的箭頭D2所示般地，便可使該流出口A12附近的液體從區隔壁13釋放。於是，依據儲存槽10A，液體的流動便不易在流出口A2附近受到阻礙，從而可更迅速且順暢的排水。
又，如圖39所示，儲存槽10A中，區隔壁13的高度H13會隨著朝向流出口A12而變高。此情況下，可提高流出口A12附近的液體水頭，且隨著遠離該流出口A12來增加從區隔壁13釋放的液體量。於是，依據儲存槽10A，便可謀求直到虹吸力產生為止的時間縮短與順暢排水之平衡(同時達成)。
又，如圖39所示，儲存槽10A中，流出口A12係設置於較流入口A11更低之位置處。此情況下，可更迅速且順暢的排水。於是，依據儲存槽10A，便可更加縮短直到虹吸力產生為止的時間。
又，如圖42等所示，儲存槽10A中，區隔壁13係構成為周壁12之流出口部分12b的一部分，周壁12的流出口部分12b所相鄰接之該周壁12之流出側鄰接部分12d的內面12fd係連接於區隔壁13的頂面13f2，且與該區隔壁13的頂面13f2而形成同一面。此情況下，如箭頭D2所示，便可使從區隔壁13釋放的液體沿著周壁12之流出側鄰接部分12d的內面12fd而更加釋放。於是，依據儲存槽10A，液體的流動便不易在流出口A12附近受到阻礙，從而可更迅速且順暢的排水。
又，如圖43所示，儲存槽10A中，區隔壁13之頂面13f2的端緣部13e為朝儲存槽10A的內部凸出之曲面。此情況下，如箭頭D2所示，可使流出口A12附近的液體從區隔壁13沿著周壁12之流出側鄰接部分12d的內面12fd來有效率且順暢地釋放。於是，依據儲存槽10A，便可有效率地進行迅速且順暢的排水。
又，如圖40等所示，儲存槽10A中，周壁12之流出側鄰接部分12d的內面12fd為側面觀看的剖面形狀會朝流出側凸出之曲線所構成的曲面。此情況下，如箭頭D3所示，可使從區隔壁13釋放的液體一邊產生上下方向(縱向)的對流(循環)，一邊沿著周壁12之流出側鄰接部分12d的內面12fd來更加釋放。於是，依據儲存槽10A，便可更迅速且順暢的排水。
尤其是如圖34等所示，儲存槽10A係具有在流入口A11與流出口A12之間延伸之液體通過區域R1，以及在挾置著液體通過區域R1之兩側的各位置處所配置之液體滯留區域R2。此情況下，如箭頭D1及D2所示，可使液體流往液體通過區域R1，且使剩餘的該液體滯留在液體滯留區域R2內。於是，依據儲存槽10A，便可抑制液體通過區域R1的延伸方向長度變長，且將更大量液體儲存在液體滯留區域R2。因此，依據儲存槽10A，液體的流動便不易在流出口A12附近受到阻礙，從而可使更大量液體以一定量來連續地進行迅速且順暢的排水。另外，此情況下，可使得從液體通過區域R1流來的液體如箭頭D4所示般地在液體通過區域R1與液體滯留區域R2之間對流(循環)。於是，依據儲存槽10A，便可抑制液體通過區域R1的延伸方向長度變長，且將更大量液體迅速且順暢地排出。再者，此情況下，由於從液體通過區域R1流來的液體會在液體通過區域R1與液體滯留區域R2之間對流，故污垢會難以附著在儲存槽10A的內部。藉此，便可減少儲存槽10A的洗淨所需之作業次數。
另外，依據儲存槽10A，由於液體滯留區域R2係配置於挾置著液體通過區域R1之兩側的各位置處，故為了確保液體滯留區域R2的容積，例如，只要增加該液體滯留區域R2所延伸之方向的尺寸(面積)即可，可不須提高液體滯留區域R2的高度，甚至儲存槽10A的高度。因此，如儲存槽10A般地，例如，若在挾置著液體通過區域R1之兩側而以液體滯留區域R2所延伸之方向作為水平方向，且以周壁12的立設方向會成為鉛直方向之方式，來將儲存槽10A設置於樓板FS等，則不須將地板下空間S的高度確保為較大，便亦可使大量液體迅速且順暢地排出。此處，｢儲存槽10A的高度｣係指儲存槽10A之鉛直方向的高度(尺寸)。換言之，為儲存槽10A的周壁12之立設方向的高度(尺寸)。
由上述觀點，更具體地例如，儲存槽10A中，該儲存槽10A的高度可較儲存槽10A的寬度更低，儲存槽10A的高度較佳為儲存槽10A之寬度的1/2以下，儲存槽10A的高度更佳為儲存槽10A之寬度的1/3以下。此處，｢儲存槽10A的寬度｣係指相互對向之儲存槽10A的周壁12當中，相對於儲存槽10A的高度方向及液體通過區域R1的延伸方向而呈正交之方向的2個周壁12間之最大寬度。亦即，參照圖34，為圖式的上下方向所配置之儲存槽1A中，2個周壁(側壁)12e的外面間之寬度(尺寸)。
又，如圖34等所示，儲存槽10A中，周壁12的流入口部分12a係較與該流入口部分12a相鄰接之該周壁12的流入側鄰接部分12c更為凹陷至流出側。此情況下，在儲存槽10A內流動的液體便會變得容易回到液體的流出方向。於是，便可更迅速且順暢地排出。尤其是儲存槽10A中，由於液體滯留區域R2係配置於與液體通過區域R1相鄰接之位置，故從液體通過區域R1流來的液體便會變得容易回到該液體通過區域R1。亦即，儲存槽10A中，可使其在液體通過區域R1與液體滯留區域R2間有效率地對流。於是，依據儲存槽10A，便可透過液體通過區域R1來使大量液體更迅速且順暢地排出。又，儲存槽10A中，污垢會變得更不易附著在儲存槽10A的內部。藉此，便可更加減少儲存槽10A的洗淨所需之作業次數。
又，如圖42等所示，區隔壁13係自與溝部G相鄰接之位置而立起。儲存槽10A中，溝部G係配置於液體通過區域R1。此情況下，即便為少量液體，仍可藉由溝部G來將該液體更迅速地聚集。於是，便可更迅速且順暢的排水。儲存槽10A中，區隔壁13係自與液體通過區域R1所配置的溝部G相鄰接之位置而立起。此情況下，即便為少量液體，仍可將該液體迅速地聚集在液體通過區域R1。於是，依據儲存槽10A，便可透過液體通過區域R1來使大量液體更迅速且順暢地排出。尤其是此情況下，由於區隔壁13係自與液體通過區域R1所配置的溝部G相鄰接之位置而立起，故可更迅速地提高流出口A12附近的液體水頭。於是，依據儲存槽10A，便可透過液體通過區域R1來使大量液體更加迅速且順暢地排出。
又，如圖34等所示，儲存槽10A之周壁12的內面12f當中，在俯視觀看下會於儲存槽10A的內部形成角落部之該周壁12的內面12f係俯視觀看下的輪廓形狀為曲線所構成的曲面。儲存槽10A中，例如，流入側角落部分12i的內面12fi、流入側角落部分12i的內面12fi、流入側角落部分12j的內面12fj、流入側角落部分12f的內面12ff、及流出側角落部分12g的內面12fg在俯視觀看下的輪廓形狀係分別為曲線所構成的曲面。此情況下，便可使從液體通過區域R1流來的液體在液體通過區域R1與液體滯留區域R2間有效率地對流。因此，依據儲存槽10A，便可將大量液體更加順暢地排出，且可更加減少儲存槽10A的洗淨所需之作業次數。
此外，本案發明人經果苦心實驗研究的結果，發現在虹吸排水系統所使用之儲存槽中，將液體聚集在該儲存槽的流出口附近之情況亦可讓讓大量液體迅速且順暢地流出，進而可縮短直到虹吸力產生為止的時間。本實施型態相關之儲存槽10A係著眼於將液體聚集在流出口A12附近的情況，便能夠讓大量液體迅速且順暢地流出而完成的發明。
儲存槽10A中，周壁12的流出口部分12b係較與周壁12的該流出口部分12b相鄰接之該周壁12的流出側鄰接部分12d而更為突出至流出側。此情況下，會成為容易將液體聚集在流出口A12附近之構造。於是，依據儲存槽10A，便可讓大量液體迅速且順暢地流出。尤其是若如儲存槽10A般地將儲存槽10A使用於虹吸排水系統，則即便是排出大量液體的情況，仍可縮短直到虹吸力產生為止的時間。
圖44為圖32之I-I剖面圖。I-I剖面為包含有周壁12之流出側鄰接部分12d的上端之平面的剖面。如圖44所示，儲存槽10A中，周壁12之流出口部分12b的內面12fb從液體流通方向觀看的剖面形狀為跑道形狀。此情況下，便會成為更容易將液體聚集在流出口A12附近之構造。儲存槽10A中，跑道形狀為延伸於橫向(水平方向)之扁平的形狀。例示性跑道形狀舉例有於單側配置有1個中心O1之單側單心圓的跑道形狀、於單側配置有2個中心O1及中心O2之單側雙心圓的跑道形狀、或於單側配置有3個中心O1、中心O2及中心O3之單側三心圓的跑道形狀。進一步地，單側三心圓的跑道形狀舉例有3個中心O1~O3為對齊之單側正三心圓的跑道形狀、於外側配置有2個中心O1及與中心O3之間的1個中心O2之單側銳三心圓的跑道形狀、或於內側配置有2個中心O1及與中心O3之間的1個中心O2之鈍三心圓的跑道形狀。本實施型態中，流出口A2的剖面形狀為類似單側銳三心圓的跑道形狀之形狀。此外，本實施型態中，挾置著1個中心O2之2個中心O1及中心O2係非對齊，且A-B間為直線。又，除此以外的區間則為曲線。
此外，在容易聚集液體這一點上，周壁12之流出口部分12b的內面12fb最佳為使得從液體流通方向觀看的剖面形狀為跑道形狀。另一方面，亦可使得周壁12之流出口部分12b的內面12fb從液體流通方向觀看的剖面形狀為圓形或橢圓形。若周壁12之流出口部分12b的內面12fb從液體流通方向來觀看為圓形、橢圓的情況，便可使大流量的液體變得容易流動。此外，圓形、橢圓形的剖面形狀為因應於大流量之特別情況的剖面形狀。因此，特別是如儲存槽10A般地欲使液體連續流動的情況，則較佳為圖45等所例示般的跑道形狀。
尤其是儲存槽10A中，如圖34等所示，周壁12之流出口部分12b的內面12fb係包含有會隨著朝向流出口A12而前端變細之曲面。此情況下，便會成為更容易將液體聚集在流出口A12附近之構造。
此外，如圖43所示，儲存槽10A中，液體滯留區域R2的底面F2從液體通過區域R1的延伸方向來觀看，係隨著朝向液體通過區域R1而傾斜至下方，且為連接於該液體通過區域R1的底面F1之平面。此情況下，液體滯留區域R2的液體會沿著該液體滯留區域R2的底面F2而變得容易流入至液體通過區域R1。於是，依據儲存槽10A，便可透過液體通過區域R1來將大量液體更順暢地排出。儲存槽10A中，液體滯留區域R2的底面F2係相對於水平軸(圖43中，係以從液體通過區域R1的延伸方向來觀看水平面時所顯現之直線Oy來加以表示。)而以角度θ11b傾斜。角度θ11b可依儲存槽10的內容量、大小等來適當地設定。可使得角度θ11b為例如0.5°~5°的角度。若角度θ11b未達0.5°的情況，則形成排水的對流之效果便較小。又，若角度θ11b為5°以上的情況，由於傾斜會變得過大，故液體未完全進入流出口A12而會有水溢出的情況，則溢出的液體便會無法順暢地流往液體滯留區域R2。
此外，儲存槽10A中，如圖43所示，2個液體滯留區域R2的底面F2係隨著相互接近而傾斜至下方。此情況下，若直接連結2個液體滯留區域R2之底面F2的下端，便可使得液體通過區域R1成為以2個底面F2的直接連結部分作為溝底之V溝。抑或，若透過平面來連結2個液體滯留區域R2之底面F2的下端，便可使得液體通過區域R1成為以該平面作為溝底之梯形V溝。該等液體通過區域R1的底面F1皆是位在與2個液體滯留區域R2的底面F2相同之高度位置。
相對於此，如圖39等所示，儲存槽10A中，液體通過區域R1的底面F1係配置於液體滯留區域R2的底面F2更低之位置處。此情況下，便可將大量聚集在液體液體通過區域R1。於是，依據儲存槽10A，便可透過液體通過區域R1來將大量液體更順暢地排出。儲存槽10A中，係將溝部G配置在液體通過區域R1。流出口A12的最下端12fP2係配置於較液體滯留區域R2的底面F2更低之位置處。
又，如圖39~圖43等所示，儲存槽10A中，至少液體滯留區域R2中之周壁12的內面12f為周壁12之延伸方向觀看下的剖面形狀會從儲存槽1A的內部朝外凸出之曲線所構成的曲面。此情況下，從液體通過區域R1流來的液體會一邊產生上下方向(縱向)的對流(循環)，一邊沿著周壁12之流出側鄰接部分12d的內面12fd而更加釋放。於是，依據本實施型態，便可更有效率地進行液體通過區域R1與液體滯留區域R2之間的對流。因此，依據儲存槽10A，便可更加順暢地將大量液體排出，且可更加減少儲存槽10A的洗淨所需之作業次數。
又，儲存槽10A中，液體通過區域R1如圖30及圖31所示，流出口A12從液體流通方向來觀看(從液體通過區域R1的延伸方向來觀看)，係重疊於與流入口A11的至少一部分而成為一直線上般地對齊。
參照圖30，流入口A11及流出口A12的對齊相關之具體例舉例有例如組合以下(1)~(3)當中的任一者之方法。
(1)使得流入口A11的中心Oa與流出口1b的中心Ob從液體通過區域R1的延伸方向來觀看會對齊於相同的鉛直線Oz上。
(2)調整流入口A11之內徑的大小(流入口A11之半徑ra的大小)與流出口A12之內徑的大小(流出口A12的半徑rb的大小)。
(3)調整流入口A11的中心Oa與流出口A12的中心Ob在鉛直方向(鉛直線Oz的方向)上的間隔ΔZ。
儲存槽10A中，係使用(1)~(3)的所有方法來使流出口A12從液體通過區域R的延伸方向來觀看會重疊與流入口A11的至少一部為一直線上般地對齊。尤其是如圖30所示，儲存槽10A中，在(2)中，流出口A12之內徑的大小係設定為會小於流入口A11之內徑的大小。藉此，從流出口A12所流出的液體量便會較從流入口A11所流入的液體量而變小。又，儲存槽10A如圖30所示，在(3)中，流入口A11的中心Oa與流出口A12的中心Ob係調整鉛直方向的間隔ΔZ來使流出口A12的開口內上端會重疊於流入口A11的開口內下端部。
[其他例示性儲存槽]
圖45係從上方來顯示其他例示性儲存槽10B的流入側之立體圖。儲存槽10B中，周壁12係圍繞液體通過區域R1與液體通過區域R1的兩側所配置之2個液體滯留區域R2而將儲存槽10B的外形形狀成形為蝶形(H形)。儲存槽10B中，區隔壁13為與周壁12不同的壁。
上述內容係用以說明本發明之例示性實施型態，可在未背離申請專利範圍之範圍來進行各種變更。例如，儲存槽10可藉由樹脂且藉由射出成形來一體地製造。特別是儲存槽10A可藉由吹塑成形來製造。但儲存槽10的製造方法並未侷限於射出成形。儲存槽10中，形成於周壁12的上端之頂壁14的有無不拘。又，本發明相關之排水管構造及排水系統100的構成並未侷限於上述構成。例如，器具排水管120及虹吸排水管130中，各上游側部分(橫向管)與下游側部分(豎管)雖係以一體的排水管來加以說明，但可藉由使得上游側部分(橫向管)與下游側部分(豎管)為個別的排水管，且將該等排水管相互連接，來作為器具排水管120或虹吸排水管130。又，上述儲存槽10A或儲存槽10B所採用之各種構成可適當地相互置換。Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, "upstream" refers to the upstream of the drainage flow and exhaust flow, and "downstream" refers to the downstream of the drainage flow and exhaust flow. In addition, in the following description, "top view" refers to a diagram showing the object from the top side, and "bottom view" refers to a diagram showing the object from the bottom side. In addition, "front view" refers to a diagram showing the object from the downstream side of the drainage flow, and "rear view" refers to a diagram showing the object from the upstream side of the drainage flow. In addition, "right side view" refers to a diagram showing the object from the upstream side of the exhaust gas flow, and "left side view" refers to a diagram showing the object from the downstream side of the exhaust gas flow.
[Drain pipe structure and silencer]
FIG. 1 is a top view showing a drainage pipe structure C of a muffler 1 to which an embodiment of the present invention can be applied. Figure 2 shows a front view of the drainage pipe structure C.
As shown in FIG. 1, the drainage pipe structure C is provided with a storage tank 10 connected to the inflow pipe 120 and the outflow pipe 130, and is connected to the outflow pipe 130 and the storage tank 10 so that the outflow pipe 130 and the storage tank 10 communicate with each other. Connecting part 110.
In the drainage pipe structure C, the inflow pipe 120 is a water-side pipe connected to a bathtub or the like. Moreover, in the drainage pipe structure C, the outflow pipe 130 is a horizontal pipe which is arrange|positioned with respect to the horizontal direction so that it may not incline substantially. In this example, the outflow pipe 130 functions as a siphon drain pipe. That is, the outflow pipe 130 can promote the drainage from the water-side pipe passing through the storage tank 10 by generating siphon force when performing drainage from the water appliance.
In the drainage pipe structure C, the communicating portion 110 is provided with the muffler 1 according to an embodiment of the present invention.
The muffler 1 is included in the muffler unit 101. As shown in FIG. 2, the muffler unit 101 is arranged at a position higher than the outflow pipe 130.
Fig. 3 is a cross-sectional view of A-A in Fig. 2. FIG. 3 shows the channels formed in the muffler unit 101. As shown in FIG.
As shown in FIG. 3, the muffler 1 has a tubular channel 3. The tubular passage 3 has an inlet portion A1 connected to the outflow pipe 130 and an outlet portion A2 connected to the storage tank 10.
In addition, the muffler 1 has a vent pipe 2 communicating with the outlet portion A2. The vent pipe 2 is connected to the storage tank 10 together with the outlet portion A2. In this embodiment, the vent pipe 2 series and the muffler 1 are included in the muffler unit 101 together.
In addition, the communication portion 110 has an outflow pipe side piping portion 140 connected to the outflow pipe 130 and the silencer 1, and a storage tank side piping portion 150 connected to the silencer 1 and the storage tank 10. The outflow pipe side piping portion 140 is an elbow that rises upward from the outflow pipe 130. In addition, the storage tank side piping portion 150 is a straight pipe extending parallel to the outflow pipe 130.
In the drainage pipe structure C, the outflow pipe side piping portion 140 and the storage tank side piping portion 150 are connected to the muffler unit 101, respectively. In this embodiment, the drainage pipe structure C system additionally has an exhaust side vent pipe 160.
4 is a perspective view showing the outflow pipe side pipe portion 140, the storage tank side pipe portion 150, and the exhaust side vent pipe 160 from the upper side. In addition, the storage tank 10 and the muffler unit 101 are omitted in FIG. 4. 5 is a perspective view showing the periphery of the communicating portion 110 of the drainage pipe structure C from the upper side.
As shown in FIG. 4, the outflow pipe side piping part 140 is an elbow pipe as mentioned above. The outflow pipe side piping portion 140 is formed by a vertical pipe portion 141 standing upward from the outflow pipe 130 and a horizontal pipe portion 142 connected to the vertical pipe portion 141. As shown in FIG. 5, in the drainage pipe structure C, the vertical pipe portion 141 of the outflow pipe side piping portion 140 is connected to the outflow pipe 130. Furthermore, as shown in FIG. 5, the horizontal pipe portion 142 of the outflow pipe side pipe portion 140 is connected to the muffler unit 101. Thereby, as shown in FIG. 5, the outflow pipe 130 is connected to the muffler unit 101.
Moreover, as shown in FIG. 4, the storage tank side piping part 150 is a straight pipe as mentioned above. As shown in FIG. 5, in the drainage pipe structure C, one end portion 150 a of the storage tank side piping portion 150 is connected to the muffler unit 101. Moreover, as shown in FIG. 5, the other end 150 b of the storage tank side piping portion 150 is connected to the storage tank 10. Thereby, as shown in FIG. 5, the outflow pipe 130 will communicate with the storage tank 10 through the muffler unit 101.
In addition, as shown in FIG. 4, the exhaust side vent pipe 160 is a straight pipe communicating with the outside. As shown in FIG. 5, the exhaust side vent pipe 160 is connected to the muffler unit 101. Thereby, as shown in FIG. 5, the outflow pipe 130 will pass through the muffler unit 101 and communicate with the exhaust side vent pipe 160. In addition, as shown in FIG. 5, the storage tank 10 also communicates with the exhaust side vent pipe 160 through the muffler unit 101. That is, the outflow pipe 130 and the storage tank 10 are connected to the outside of each through the exhaust side vent pipe 160.
FIG. 6 shows a top view of the muffler unit 101. In addition, FIG. 7 shows a bottom view of the muffler unit 101. As shown in FIGS. 6 and 7, the muffler unit 101 is a flat unit. The muffler unit 101 has an inflow-side connection portion 101a. The inflow side connecting portion 101a is connected to the outflow pipe side piping portion 140. FIG. 8 is a right side view of the muffler unit 101. As shown in FIG. As shown in FIG. 8, the inflow-side connection portion 101 a of the muffler unit 101 is connected to the inlet portion A1 of the tubular passage 3.
FIG. 9 is a left side view of the muffler unit 101. As shown in FIG. 9, the muffler unit 101 has a storage tank side connection part 101b and an exhaust side connection part 101c. The storage tank side piping part 150 is connected to the storage tank side connection part 101b. FIG. 10 is a rear view of the muffler unit 101. As shown in FIG. As shown in FIG. 10, the storage tank side connecting portion 101b is formed with an opening on the side of the passage 4 of the vent pipe 2. FIG. 11 is a front view of the silencer unit 101. As shown in FIG. An exhaust-side vent pipe 160 is connected to the exhaust-side connecting portion 101c. As shown in FIG. 11, the exhaust side connection part 101c is formed with the other side opening of the duct 4 of the vent pipe 2. As shown in FIG. That is, in the drainage pipe structure C, the channel 4 of the exhaust pipe 2 is opened to both the storage tank side connection portion 101b and the exhaust side connection portion 101c.
Fig. 12 is an A-A cross-sectional view of the muffler unit 101.
As shown in FIG. 12, the tubular passage 3 has an inlet portion A1 connected to the sound source side, an outlet portion A2 connected to the side other than the sound source, and a three-pronged branch passage 31 arranged on the inlet portion A1 side. The inflow passage 31a of the trifurcated branch passage 31 communicates with the inlet portion A1. One side of the outflow channel 31b of the trifurcated branch channel 31 is such that the end 31be of the one side outflow channel 31b is closed. The outflow channel 31c on the other side of the trifurcated branch channel 31 is connected to the outlet portion A2.
In the muffler 1, the branch portion 31J of the trigeminal branch passage 31 is T-shaped.
As shown in FIG. 12, the diverging part 31J divides the inflow channel 31a into one side outflow channel 31b and the other side outflow channel 31c. In other words, it is the confluence of the three channels of the inflow channel 31a, one side outflow channel 31b, and the other side outflow channel 31c. In the drainage pipe structure C, the inflow channel 31a extends in the same direction as the one-side outflow channel 31b. As shown in FIG. 12, the other-side outflow channel 31c is connected orthogonally to the inflow channel 31a and the one-side outflow channel 31b in a plan view. In the drainage pipe structure C, an introduction port A3 is formed between the inflow channel 31a and the one side outflow channel 31b toward the other side outflow channel 31c. As a result, as shown in FIG. 12, in a plan view, the branch portion 31J of the trifurcated branch passage 31 will be such that the other side outflow passage 31c will be orthogonally connected with respect to the inflow passage 31a and the one side outflow passage 31b. Zigzag.
As shown in FIG. 12, if a three-pronged branch channel 31 is provided on the inlet A1 side of the tubular channel 3, the sound input from the inlet A1 will become the input wave that advances in the inflow channel 31a and the sound that flows out of the channel 31b on one side. The composite wave synthesized by the reflected wave of the end 31be rebound. In addition, the composite wave is introduced to the other outflow channel 31c through the introduction port A3. Thereby, the frequency distribution of the sound input from the entrance portion A1 can be changed to the frequency domain side (low frequency side in this example) where the sound is easily attenuated. In addition, in the trifurcated branch passage 31, if the length from the introduction port A3 to the end 31be of the one-side outflow passage 31b (the depth direction dimension of the one-side outflow passage 31b) is L1, the length L1 can be based on the inlet portion A1 and the outlet The shape, size, size, etc. of the portion A2 and the trifurcated branch passage 31 are appropriately set. A specific example of the length L1 is about 20 mm.
In addition, in the muffler 1, the tubular passage 3 has a small cross-sectional area part whose cross-sectional area is smaller than the cross-sectional area SA1 of the inlet part A1.
As shown in FIG. 12, the cross-sectional area S31a of the inflow passage 31a of the trifurcated branch passage 31 is smaller than the cross-sectional area SA1 of the inlet portion A1. In addition, the cross-sectional area S31b of the outflow channel 31b on one side of the trifurcated branch channel 31 is also smaller than the cross-sectional area SA1 of the inlet portion A1. In addition, in this embodiment, the cross-sectional area S31a of the inflow channel 31a and the cross-sectional area S31b of the one-side outflow channel 31b become smaller toward the end 31be of the one-side outflow channel 31b. In addition, the cross-sectional area SA3 of the introduction port A3 is smaller than the cross-sectional area S31a of the inflow passage 31a. Similarly, the cross-sectional area S31c of the outflow channel 31c on the other side of the trifurcated branch channel 31 is also smaller than the cross-sectional area SA1 of the inlet portion A1. That is, in the drainage pipe structure C, the entire trifurcated branch channel 31 is a small cross-sectional area. In addition, according to the present invention, it is sufficient that at least a part of the tubular passage 3 has the aforementioned small cross-sectional area portion. In addition, the relationship between the cross-sectional area SA1 of the inlet portion A1 and the cross-sectional area of the small cross-sectional area portion provided by the tubular passage 3 can be appropriately determined according to the shape, size, and size of the inlet portion A1, the outlet portion A2, and the trifurcated branch passage 31. set up. As a specific example, the inner diameter of the inlet portion A1 is equivalent to 25A, and the inner diameter of the introduction port A3 of the trifurcated branch passage 31 is equivalent to 13A.
In addition, in the muffler 1, the tubular passage 3 has a turn-back passage 3t.
According to the present invention, as long as at least a part of the tubular channel 3 is provided with at least one turn-back channel 3t. As shown in FIG. 12, in the drainage pipe structure C, the trifurcated branch channel 31 is provided with a plurality of (5 in this example) turn-back channels 3t. Therefore, in this embodiment, the size of the muffler 1 can be made smaller, and the length (distance) of the small cross-sectional area portion can be ensured to be longer.
More specifically, the outflow channel 31c on the other side of the trifurcated branch channel 31 is folded back through the introduction port A3 to a direction that returns along the inflow channel 31a. That is, in the present embodiment, a turn-back channel 3t is formed in the vicinity of the introduction port A3 of the trifurcated branch channel 31. In this way, the inflow channel 31a and the other side outflow channel 31c of the trifurcated branch channel 31 will form two extension channels that are connected through the turn-back channel 3t. In the drainage pipe structure C, the inflow channel 31a and the other outflow channel 31c of the trifurcated branch channel 31 extend at a fixed angle α0 as they open with each other based on the turn-back channel 3t in a plan view.
In addition, in the drainage pipe structure C, the outflow channel 31c on the other side of the trifurcated branch channel 31 is provided with three turn-back channels 3t. Thereby, in the drainage pipe structure C, the adjacent channel 31c1 of the other side outflow channel 31c adjacent to the other side outflow channel 31c will form two extended channels connected through the turn-back channel 3t. In addition, as shown in FIG. 12, the two adjacent passages 31c1 extend at a fixed angle α0 as if they are opened with each other based on the turn-back passage 3t in a plan view. Therefore, according to the present embodiment, by providing the angle α0, the length of the two adjacent channels 31c1 can be ensured to be longer, so the length of the small cross-sectional area portion can be ensured to be longer. In addition, according to the present invention, two adjacent channels 31c1 can also extend parallel to each other.
In addition, in the drainage pipe structure C, the exhaust-side connecting portion 101c side of the channel 4 of the vent pipe 2 passes through the outlet portion A2 and turns back to a direction where it will return along the other side of the outflow channel 31c of the trifurcated branch channel 31. That is, in the drainage pipe structure C, the turn-back channel 3t is also formed in the vicinity of the exit portion A2 of the trifurcated branch channel 31. Thereby, the outflow channel 31c on the other side of the trifurcated branch channel 31 and the channel 4 of the vent tube 2 will form two extended channels connected by the turn-back channel 3t. In the drainage pipe structure C, the outflow channel 31c on the other side of the trifurcated branch channel 31 and the channel 4 of the vent pipe 2 extend at a fixed angle α0 as if they are opened with each other based on the turn-back channel 3t when viewed from above. With this, in the drainage pipe structure C, the size of the muffler unit 101 can be made small, and the length of the small cross-sectional area portion can be ensured to be longer. In addition, according to the present invention, the outflow channel 31c on the other side of the trifurcated branch channel 31 and the channel 4 of the vent tube 2 can extend parallel to each other.
In addition, the position and number of the turn-back channels 3t can be appropriately set according to the shape, size, and size of the inlet portion A1, the outlet portion A2, and the three-way branch channel 31. For example, the position and number of the return passage 3t can be set so as not to interfere with or extend out of the components arranged around the muffler 1 (the storage tank 10 and the outflow pipe 130 in this example). To give a specific example, if the position and number of the turn-back channels 3t are set so that the total length of the outflow channel 31c on the other side of the trifurcated branch channel 31 becomes 363 mm or more. In addition, according to the present invention, the turn-back channel 3t may not be provided to ensure the length (distance) of the small cross-sectional area portion to be longer.
In addition, in the drainage pipe structure C, the outlet portion A2 is arranged above the inlet portion A1. Therefore, in this embodiment, the bottom of the tubular channel 3 is formed such that the bottom of the tubular channel 3 is inclined to the lower side toward the entrance A1.
Fig. 13 is a cross-sectional view taken along line B-B of Fig. 6; Here, the B-B cross section is as shown in FIG. 12, and is a cross section including the central axis O1 of the entrance portion A1 in a plan view. Furthermore, Fig. 14 is a cross-sectional view taken along line C-C in Fig. 6. Here, the C-C cross section is as shown in FIG. 12, and is a cross section including the central axis O2 of the outlet portion A2 in a plan view.
As shown in FIGS. 13 and 14, in the drainage pipe structure C, the bottom (lower end) E2 of the outlet portion A2 is arranged above the bottom (lower end) E1 of the inlet portion A1. In addition, as shown in FIGS. 13 and 14, the bottom (lower end) E3 of each tubular channel 3 is viewed from the upstream direction (downstream direction) on the drainage side, and the imaginary line L31 connecting the bottom E3 of the tubular channel 3 is formed so as to be opposite to The horizontal axis Oy inclines to the lower side at an angle α1 toward the entrance portion A1. Thereby, the bottom E3 of the tubular passage 3 is formed between the outlet portion A2 and the inlet portion A1, and the bottom E3 of the tubular passage 3 is inclined to the lower side at an angle α1 toward the inlet portion A1. A specific example of the angle α1 is α1=3°.
Fig. 15 is a cross-sectional view taken along the line D-D in Fig. 6; Here, the D-D cross-section is shown in FIG. 12, and is a cross-section of the inflow channel 31a passing through the trifurcated branch channel 31 in a plan view. Also, Fig. 16 is a cross-sectional view taken along the line E-E in Fig. 6. Here, the E-E cross-section is as shown in FIG. 12, and is a cross-section through the outflow channel 31c on the other side of the trifurcated branch channel 31 in a plan view.
As shown in Figs. 15 and 16, in the drainage pipe structure C, the bottom (lower end) E3 of each tubular channel 3 is formed so as to face the inlet A1 with respect to the horizontal axis Oy when viewed from the upstream direction (downstream direction) on the ventilation side. Tilt to the lower side at an angle α2. In this embodiment, the bottom E3 of the inflow channel 31a of the trifurcated branch channel 31 and the bottom E3 of each extension channel 31c1 of the other side outflow channel 31c of the trifurcated branch channel 31 are formed between the outlet portion A2 and the inlet portion A1. In the meantime, the bottom E3 of the tubular channel 3 is inclined to the lower side at an angle α2 toward the entrance A2. A specific example of the angle α2 is α2=1°.
In addition, in the muffler 1, the tubular passage 3 is provided with two extension passages that are communicated through the turn-back passage 3t. The side walls of the two extending channels adjacent to each other are the common wall 32.
As shown in FIG. 12, the tubular channel 3 includes the inflow channel 31a and the other side outflow channel 31c of the three-forked branch channel 31 that are connected through the turn-back channel 3t as the aforementioned two extension channels. The side walls of the inflow channel 31 a and the other side outflow channel 31 c adjacent to each other are the common wall 32. Moreover, as shown in FIG. 12, the outflow channel 31c on the other side of the trifurcated branch channel 31 is provided with two extension channels 31c1 connected through the turn-back channel 3t as the aforementioned two extension channels. The side walls of the two extension channels 31c1 adjacent to each other are the common wall 32. In addition, the tubular passage 3 is provided with the outflow passage 31c on the other side of the trifurcated branch passage 31 and the passage 4 of the vent pipe 2 which are connected through the turn-back passage 3t as the aforementioned two extension passages. The adjacent side walls of the outflow channel 31c of the trifurcated branch channel 31 and the channel 4 of the vent tube 2 are also the common wall 32.
As shown in FIG. 12, in the drainage pipe structure C, the muffler unit 101 is provided with five common walls 32. In addition, as shown in FIG. 12, each common wall 32 is a part of the side walls of the two extending channels adjacent to each other in a plan view. In addition, according to the present invention, the common wall 32 formed by the adjacent channel side walls of the inflow channel 31a and the other side outflow channel 31c of the trifurcated branch channel 31 can be the entire channel side wall. Furthermore, according to the present invention, the common wall 32 formed by the channel sidewalls adjacent to the two extension channels 31c1 of the outflow channel 31c on the other side of the trifurcated branch channel 31 can be the entire channel sidewall. In addition, according to the present invention, the common wall 32 formed by the adjoining channel side wall of the other side of the outflow channel 31c of the trifurcated branch channel 31 and the channel 4 of the vent tube 2 becomes the entire channel side wall.
Fig. 17 is a bottom perspective view showing the muffler unit 101 from the lower side.
In this embodiment, the common wall 32 will be hollow due to the groove 33.
In this embodiment, as shown in FIG. 17, the five common walls 32 are respectively hollowed by the groove 33 formed on the outer surface of the muffler unit 101.
In addition, the muffler 1 is formed by a lower module M1 and an upper module M2 mounted on the lower module M1.
In the drain pipe structure C, the muffler 1 is formed as a muffler unit 101 including a vent pipe 2 by a lower module M1 and an upper module M2 mounted on the lower module M1.
Fig. 18 is a perspective view showing the lower assembly M1 from the upper side.
As shown in Fig. 18, the tubular passage 3 and the passage 4 of the vent tube 2 are formed by grooves formed in the lower assembly M1. The lower component M1 is provided with a flange portion 34 on the surface facing the upper component M2 to ensure a joint area with the upper component M2. In addition, the lower module M1 is provided with a convex portion 35 for fitting the upper module M2. In this embodiment, the convex portion 35 is provided on the upper end surface of the common wall 32.
Fig. 19 is a perspective view showing the upper assembly M2 from the lower side.
As shown in FIG. 19, in the muffler 1, the upper component M2 is a flat component.
As shown in FIG. 19, the inner surface of the upper module M2 is provided with a recess 36 for fitting the upper module M2. The concave portion 36 can be fitted into the convex portion 35 of the lower module M1 to align the lower module M1 and the upper module M2, and to fix the upper module M2 to the lower module M1. In addition, in this embodiment, as shown in FIG. 6, ribs 37 are provided on the surface of the upper component M2. In addition to reinforcing the upper component M2, the rib 37 can prevent the upper component M2 from being flexed when the upper component M2 is injection-molded, for example.
In the conventional drainage pipe structure, there is still room for improvement in suppressing the noise generated by the drainage from the siphon drainage pipe connected to the storage tank.
In contrast, the drainage pipe structure C has a storage tank 10 connected to the inflow pipe 120 and the outflow pipe 130, and is connected to the communication portion between the outflow pipe 130 and the storage tank 10 to communicate the outflow pipe 130 and the storage tank 10 110.
According to the drainage pipe structure C, by making the storage tank 10 and the outflow pipe 130 connected to the storage tank 10 communicate through the communicating portion 110, and by using the communicating portion 110 as a vent pipe relative to the outflow pipe 130, The noise generated when air is sucked in together with the drain at the connection part of the outflow pipe 130 and the storage tank 10 can be suppressed. In this way, according to the present embodiment, the novel configuration in which the communicating portion 110 used as the vent pipe with respect to the outflow pipe 130 merges to the storage tank 10 can suppress the occurrence of drainage from the outflow pipe 130. Murmur.
Therefore, the drainage pipe structure C becomes a novel drainage pipe structure that suppresses noise. In addition, according to this embodiment, by making the communicating portion 110 connected to the outflow pipe 130 merge into the storage tank 10, the air passage of the outflow pipe 130 and the air passage of the storage tank 10 can be shared. Therefore, the drainage pipe structure C related to the present embodiment becomes a drainage pipe structure that can reduce the space by reducing the piping system.
In addition, in the drainage pipe structure C, the communicating portion 110 is provided with a silencer 1, the silencer 1 has a tubular passage 3, and the tubular passage 3 has an inlet portion A1 communicating with the outflow pipe 130 and an outlet portion A2 communicating with the storage tank 10. . In this case, it is assumed that even when noise is generated during drainage, the noise can be reduced by the muffler 1. In this case, noise can be suppressed even more.
In more detail, as described above, if the storage tank 10 is connected to the outflow pipe 130 connected to the storage tank 10 by the communicating portion 110, the connection part of the outflow pipe 130 and the storage tank 10 can be prevented from being drained together. And the noise produced when the air is inhaled together.
However, if the storage tank 10 and the outflow pipe 130 are connected through the communicating portion 110, there is a concern that the connecting portion between the communicating portion 110 and the outflow pipe 130 sucks in air together with the drain, which may cause new noises.
However, in reality, the noise is smaller than the noise generated at the connection part of the outflow pipe 130 and the storage tank 10 when air is sucked in together with the drainage.
In addition, there may be cases where the sound easily generates echoes in the storage tank 10. Therefore, when the noise generated at the connecting portion of the communicating portion 110 and the outflow pipe 130 is transmitted to the storage tank 10 through the communicating portion 110, the noise will be echoed in the storage tank 10, and the noise will be emitted from the storage tank 10. Concerns about spillage to the outside. The echo degree of such a noise will vary according to the size and shape of the storage tank 10. For example, if the capacity of the storage tank 10 is increased and the rigidity of the central part of the storage tank 10 is lowered, there is a concern that the noise will echo in the storage tank 10 more.
In contrast, in the drainage pipe structure C, the communication portion 110 is provided with the silencer 1. In this case, when the connecting portion between the connecting portion 110 and the outflow pipe 130 sucks in air together with the drain to generate noise, the noise transmitted through the connecting portion 110 will also be reduced. That is, according to the present embodiment, by reducing the noise that propagates to the storage tank 10 through the communication portion 110, the echo of the noise generated in the storage tank 10 can be suppressed. Therefore, according to this embodiment, noise can be suppressed even more.
In addition, in this embodiment, the muffler 1 is provided with a vent pipe 2 communicating with the storage tank 10 together with the outlet portion A2. In this case, the noise that propagates to the tubular channel 3, that is, the noise that propagates to the storage tank 10 can be more suppressed. Therefore, according to this embodiment, the noise can be suppressed more effectively. In the drainage pipe structure C, the exhaust side vent pipe 160 is connected to the vent pipe 2. In this case, the air flowing out of the pipe 130 and the storage tank 10 can circulate with the air located farther from the outside of the storage tank 10.
In addition, in the muffler 1, the tubular channel 3 is provided with a trifurcated branch channel 31 connected to the sound source side on the inlet portion A1 side, the inflow channel 31a of the trifurcated branch channel 31 is connected to the inlet portion A1, and one side of the trifurcated branch channel 31 flows out The channel 31b makes the end 31be of the one side outflow channel 31b closed, and the other side outflow channel 31c of the three-pronged branch channel 31 is connected to the outlet portion A2 connected to the side other than the sound source.
If noise from the outflow pipe 130 is input into the inflow channel 31a of the trifurcated branch channel 31, a part of the frequency of the noise will bounce back toward the inflow channel 31a at the end 31be of the outflow channel 31b on one side of the trifurcated branch channel 31. In this way, the aforementioned noise input to the trigeminal branch channel 31 can be changed into a frequency domain where the sound is easily attenuated. For a specific example, the sound pressure peak of the aforementioned noise can be changed from the frequency domain of 400 Hz to 600 Hz to the low frequency domain of 200 Hz to 400 Hz. In this case, noise can be suppressed more effectively.
In addition, in the muffler 1, the tubular passage 3 has a small cross-sectional area portion having a cross-sectional area smaller than the cross-sectional area SA1 of the inlet portion A1.
The sound pressure of the noise propagating to the tubular passage 3 is smaller if the cross-sectional area of the tubular passage 3 is smaller, the sound pressure can be lowered. That is, the connection part between the communicating portion 110 and the outflow pipe 130 is at the sound pressure of the noise generated by sucking in the air together with the drainage. If the cross-sectional area of the tubular passage 3 is smaller, the sound pressure can be lowered.
According to this embodiment, the tubular passage 3 has a small cross-sectional area that is smaller than the cross-sectional area SA1 of the inlet portion A1. Thereby, the sound pressure of the noise generated when the connecting portion 110 and the outflow pipe 130 are connected together with the drain and the air is sucked in can be reduced. In this case, noise can be suppressed more effectively.
In addition, in the muffler 1, the tubular passage 3 is provided with a turn-back passage 3t.
If the length of the tubular channel 3 is longer, the low frequency range of the noise propagating to the tubular channel 3 can be attenuated. That is, if the length of the tubular passage is longer, the connecting portion of the connecting portion 110 and the outflow pipe 130 can be attenuated in the low frequency range of the noise generated by sucking in the air together with the drain.
According to this embodiment, the length of the tubular channel 3 can be ensured to be longer by having the tubular channel 3 provided with the turn-back channel 3t. Therefore, in this case, the sound pressure in the low frequency range can be attenuated by ensuring the length of the tubular channel 3 to be longer. In this case, noise can be suppressed more effectively. In addition, the length of the tubular channel 3 can be ensured to be long by the turn-back channel 3t, thereby achieving the miniaturization of the entire muffler unit 101 (muffler 1), and further miniaturization of the entire drainage pipe structure C.
In addition, the muffler 1 is provided with a vent pipe 2 communicating with the outlet portion A2. In this case, the noise that propagates to the tubular channel 3 can be more suppressed. In this case, noise can be suppressed more effectively.
In addition, in this embodiment, the tubular channel 3 has a trifurcated branch channel 31 on the side of the inlet portion A1, the inflow channel 31a of the trifurcated branch channel 31 is connected to the inlet portion A1, and one side of the trifurcated branch channel 31 has an outflow channel 31b. The end 31be of the one side outflow channel 31b is closed, the other side outflow channel 31c of the trifurcated branch channel 31 is connected to the outlet portion A2, and the other side outflow channel 31c has a cross-sectional area S31c that is smaller than the inlet portion A1. The small cross-sectional area of area SA1. In this case, since the frequency domain of the noise can be changed to a frequency domain where the sound is easily attenuated, and the sound pressure of the noise can also be reduced, the noise can be suppressed more effectively.
In addition, in this embodiment, the tubular channel 3 has a trifurcated branch channel 31 on the side of the inlet portion A1, the inflow channel 31a of the trifurcated branch channel 31 is connected to the inlet portion A1, and one side of the trifurcated branch channel 31 has an outflow channel 31b. The end 31be of the one side outflow channel 31b is closed, the other side outflow channel 31c of the trifurcated branch channel 31 is connected to the outlet portion A2, and the other side outflow channel 31c has a turn-back channel 3t. In this case, since the frequency domain of the noise can be changed to a frequency domain where the sound is easily attenuated, especially the sound pressure in the low-frequency domain can be attenuated, so the noise can be suppressed more effectively.
In addition, in this embodiment, the tubular channel 3 has a trifurcated branch channel 31 on the side of the inlet portion A1, the inflow channel 31a of the trifurcated branch channel 31 is connected to the inlet portion A1, and one side of the trifurcated branch channel 31 has an outflow channel 31b. The end 31be of the one side of the outflow channel 31b is closed, the other side of the outflow channel 31c of the trifurcated branch channel 31 is connected to the outlet portion A2, and the other side of the outflow channel 31c has a cross-sectional area smaller than that of the inlet portion A1. SA1 has a small cross-sectional area and has a turn-back channel 3t. In this case, since the frequency domain of the noise can be changed to a frequency domain where the sound is easily attenuated, and the sound pressure of the noise can be reduced, especially the sound pressure in the low frequency range can be attenuated, so the noise can be suppressed most effectively.
In addition, in this embodiment, the outlet portion A2 is arranged above the inlet portion A1, and the bottom E3 of the tubular channel 3 is formed such that the bottom E3 of the tubular channel 3 slopes to the lower side toward the inlet portion A1. In this embodiment, as described above, it is inclined at an angle α1 and an angle α2. In this case, the inflow of liquid from the inlet portion A1 can be suppressed, and it is assumed that even if liquid such as washing water flows in, it can be easily discharged from the inlet portion. That is, in this case, the inflow and retention of liquid can be suppressed. Especially in this embodiment, the tubular channel 3 is turned back at an angle α0 based on the turning back channel 3t. Therefore, in this embodiment, the inflow channel 31a of the trifurcated branch channel 31, the outflow channel 31c on the other side (adjacent to the channel 31c1), and the channel 4 of the vent tube 2 are shown in FIG. It is inclined at an angle α1×(1/2) with respect to the central axis O1 of the entrance portion A1. In this case, it is assumed that even if the liquid flows into the tubular channel 3, the liquid can still be guided toward the inlet portion A1.
In addition, in this embodiment, the communicating portion 110 has an outflow pipe side piping portion 140 connected to the outflow pipe 130 and the muffler 1, and a storage tank side piping portion 150 connected to the muffler 1 and the storage tank 10. The outflow pipe The side piping portion 140 is an elbow that rises upward from the outflow pipe 130, and the storage tank side piping portion 150 is a straight pipe that extends parallel to the outflow pipe 130. In this case, the inflow of the liquid from the inlet portion A1 can be suppressed, and even if the liquid flows in, it can be easily discharged from the inlet portion A1. That is, in this case, the inflow and retention of liquid can be suppressed. Also, in this case, since the communication portion 110 is a small-sized piping structure, the overall size of the drainage pipe structure C can be reduced.
Moreover, in this embodiment, the branch portion 31J of the trifurcated branch passage 31 is T-shaped. In this case, the inflow channel 31a of the three-pronged branch channel 31 and the one-side outflow channel 31b of the three-pronged branch channel 31 will converge on a straight line, and the noise input from the inflow channel 31a can be effectively cancelled out. One side of the branch channel 31 flows out of the channel 31b to rebound the noise. In this case, noise can be suppressed more effectively.
Moreover, in this embodiment, the outflow pipe 130 is a siphon drain pipe. The outflow pipe 130 is a siphon drain pipe arranged in a state of almost no inclination with respect to the horizontal direction. As described above, the siphon drain pipe may be connected to the storage tank 10 to suck in air together with the drain, which may cause noise. In this case, noise can be effectively suppressed.
Moreover, in this embodiment, in the muffler 1, the tubular channel 3 has two extension channels connected through the turn-back channel 3t, and the adjacent channel side walls of the two extension channels are the common wall 32. In this case, the size of the entire muffler 1 can be reduced.
In addition, in this embodiment, in the muffler 1, the common wall 32 will be hollow due to the groove 33. In this case, the muffler 1 can be easily manufactured by injection molding. Especially in this embodiment, the muffler 1 series and the vent pipe 2 together form the muffler unit 101. Therefore, in this embodiment, the vent pipe 2 together with the muffler 1 can be easily manufactured as the muffler unit 101 by injection molding.
In addition, in this embodiment, the muffler 1 is formed by a lower module M1 and a module M2 mounted on the upper module M1. In this case, by forming the lower module M1 and the upper module M2 with two modules, the lower module M1 and the upper module M2 can be injection molded, respectively.
Moreover, in this embodiment, in the muffler 1, the upper component M2 is a flat component. In this case, since the position of the mounting surface (joining surface) of the lower module M1 and the upper module M2 can be set to a high position, it is possible to prevent liquid from leaking through the mounting surface.
[How to clean the drain pipe]
Next, with reference to the above-mentioned drain pipe structure C, the cleaning method of the drain pipe will be described.
In this embodiment, the drain pipe cleaning method is a drain pipe cleaning method that performs cleaning of the drain pipe by circulating a washing liquid through a drain pipe connected to a vent pipe through a connecting pipe portion.
In this embodiment, the method for cleaning the drain pipe includes inserting a rod-shaped component provided with a sealing component into the passage of the vent pipe, and using the sealing component to seal the vent pipe formed in the vent pipe and communicate with the connection The step of opening the piping portion (hereinafter also referred to as "opening closing step".), and, after closing the opening, the step of flowing the cleaning solution through the passage of the drain pipe (hereinafter also referred to as " Circulation steps of washing liquid.).
With reference to the above-mentioned drainage pipe structure C, in this embodiment, the vent pipe is the vent pipe 2 of the muffler unit 101. In this example, the vent pipe also includes an exhaust-side vent pipe 160. In addition, in this embodiment, the connecting piping portion is composed of the drain pipe side piping portion 140, the muffler unit 101, the storage tank side piping portion 150, and the exhaust side vent pipe 160. Moreover, in this embodiment, the opening is the outlet A2 of the muffler 1.
The rod-shaped component provided with the closed component is a cable tool that can be inserted into the pipe. As a specific example of the rod-shaped component, a single-wire or multi-strand cable is exemplified. Of course, the wire includes a metal cable, and also includes a synthetic resin cable. Specific examples of the closed component include brushes that bundle linear components such as wool, elastic components such as rubber, or porous components such as sponges.
Fig. 20 is an enlarged cross-sectional view of Fig. 3 for explaining the step of closing the opening.
In FIG. 20, the symbol 50 is a rod-shaped component. In this example, it is a metal cable. In this example, the rod-shaped component 50 is flexible. Symbol 51 is a closed component. In this example, the closing component 51 is a brush.
As shown in FIG. 20, in the opening closing step, the rod-shaped assembly 50 is inserted into the passage 4 of the vent pipe 2 to close the outlet portion A2 of the muffler 1 with the closing assembly 51.
Fig. 21 is a cross-sectional view taken along the line F-F in Fig. 1 for explaining the flow of the cleaning liquid.
In FIG. 21, reference numeral 60 denotes a hose for high-pressure washing provided with a high-pressure washing nozzle 61. In this example, the hose 60 is flexible. The hose 60 for high-pressure washing naturally includes a synthetic resin hose and also includes a metal hose.
After the outlet portion A2 of the muffler 1 is closed, as shown in FIG. 21, in the washing liquid flow step, the high-pressure washing nozzle 61 is inserted into the passage of the outflow pipe 130. The washing liquid is sprayed from the high-pressure washing nozzle 61 toward the downstream of the outflow pipe 130 in a high-pressure state. In this way, the outflow pipe 130 can be cleaned.
As described above, according to the present embodiment, in the opening closing step, the rod-shaped component 50 is inserted into the passage 4 of the vent pipe 2, and the rod-shaped component 50 is provided with the sealing component 51 to close the passage. The outlet portion A2 of the muffler 1 formed by the air pipe 2. Thereby, the passage 4 of the vent pipe 2 can be blocked from the passage communicating with the outflow pipe 130. Next, according to this embodiment, after the outlet portion A2 is closed, the washing liquid will flow through the passage of the outflow pipe 130 in the washing liquid circulation step. In this way, the passage of the outflow pipe 130 can be cleaned to clean the outflow pipe 130. The washing liquid can be sprayed into the passage of the outflow pipe 130 from the high-pressure washing nozzle 61 by inserting the high-pressure washing nozzle 61 into the passage of the outflow pipe 130.
According to this embodiment, the cleaning liquid from the outflow pipe 130 cannot flow into the vent pipe 2 due to the closure assembly 51. Therefore, according to the drain pipe cleaning method related to this embodiment, the drain pipe can be cleaned without letting the washing liquid flow into the vent pipe 2.
In addition, as shown in FIG. 21, in the drain pipe cleaning method of this embodiment, the vent pipe 2 is positioned higher than the outflow pipe 130. In this case, it is possible to more reliably prevent the washing liquid from flowing into the vent pipe 2, and even if the washing liquid flows in, it can be easily discharged. That is, in this case, the inflow and retention of the cleaning liquid can be suppressed.
Also, as shown in FIG. 20, in the drain pipe cleaning method of this embodiment, the vent pipe 2 is from the insertion port of the rod-shaped assembly 50 formed by the vent pipe 2 to the exit portion A2 of the muffler 1 Extend horizontally. In this case, since there is no step difference between the section communicating with the outlet portion A2 of the muffler 1, the closing assembly 51 can easily pass through the passage 4 of the vent pipe 2. That is, in order to clean the outflow pipe 130, the operation of closing the outlet portion A2 connected to the muffler 1 can be easily performed. Therefore, in this case, the outflow pipe 130 can be easily cleaned.
In addition, as shown in FIG. 20, in the method of cleaning the drain pipe of this embodiment, the closing assembly 51 is a brush. In this case, the brush system has flexibility, and it is easy to pass the sealing assembly 51 through the passage 4 of the air duct 2. Therefore, the operation of closing the outlet portion A2 connected to the muffler 1 can be easily performed. Therefore, in this case, the outflow pipe 130 can be easily cleaned. Moreover, in this case, it is possible to scrape off the dirt such as liquid and garbage attached to the passage 4 of the vent pipe 2 (including the passage of the exhaust side vent pipe 160). Therefore, in this case, the vent pipe 2 can also be cleaned together with the outflow pipe 130. In addition, the brush is preferably one having water absorption. In this case, since the liquid such as the cleaning solution attached to the passage 4 of the vent tube 2 can be removed, the vent tube 2 can be cleaned effectively.
Also, as shown in FIG. 20, in the drainage pipe cleaning method of this embodiment, the vent pipe 2 is interposed between the passage 4 of the vent pipe 2 and communicates with the outlet portion A2 of the muffler 1 and is connected to the rod-shaped assembly The insertion port 50 has an insertion restricting portion 151 that can abut the rod-shaped component 50 at a position on the opposite side. In this case, the closing assembly 51 can be positioned at an appropriate position for closing the outlet portion A2 as shown in FIG. 20 by simply passing the rod-shaped assembly 50 through the passage 4 of the vent tube 2. That is, it is easy to perform the work of closing the outlet portion A2 communicating with the muffler 1 in order to clean the outflow pipe 130. Therefore, in this case, the outflow pipe 130 can be easily cleaned. As shown in FIG. 4, in this embodiment, the insertion restriction portion 151 is the end portion of the piping portion 150 on the storage tank side. In this embodiment, the storage tank side piping portion 150 is a cylindrical component whose end portion is closed. The storage tank side piping portion 150 is formed with an opening A4 communicating with the storage tank 10. In addition, the insertion restricting portion 151 is not limited to the end portion of the sealing wall as in this embodiment. For example, the insertion restricting portion 151 may be a protrusion provided in the piping portion 150 on the storage tank side.
In addition, as shown in FIG. 20, in the drain pipe cleaning method of this embodiment, the connecting piping part has a muffler 1. In this case, the outflow pipe 130 connected to the muffler 1 can be easily cleaned.
In addition, as shown in FIG. 21, in the drain pipe cleaning method of this embodiment, the outflow pipe 130 is connected to the storage tank 10, and the vent pipe 2 is connected to the same storage tank as the storage tank 10. In this case, by concentrating the plural vent pipes to reduce the number of the plural vent pipes, the outflow pipe 130 can be cleaned.
In addition, in the drain pipe cleaning method of this embodiment, the outflow pipe 130 is a siphon drain pipe.
Snorkels are generally not supposed to allow water to pass through, and it is best if water does not flow in and stay. Especially in this embodiment, the outflow pipe 130 is a horizontal siphon drainage pipe in which the outflow pipe 130 is arranged in a state of almost no inclination with respect to the horizontal direction. In this case, since the drainage filled with the siphon drainage pipe becomes the resistance of the high-pressure washing water, the doubt that the high-pressure washing water will flow into the vent pipe 2 becomes deeper. Therefore, when the outflow pipe 130 is a siphon drain pipe, it is effective to suppress the inflow and retention of the washing liquid.
[Piping joint]
In addition, if two upstream piping are merged into one downstream piping, space saving can be achieved by reducing the piping system.
However, when the cleaning tool is inserted from the downstream piping, it is difficult to select the required upstream piping to insert the cleaning tool.
FIG. 22 is a top view of a pipe joint 20 as an example of a preferable pipe joint when the upstream pipes of two systems are merged into one downstream pipe. In addition, FIG. 23 shows a front view of the pipe joint 20. As shown in FIG. In addition, FIG. 24 shows a rear view of the pipe joint 20. In addition, Fig. 25 is a G-G cross-sectional view of Fig. 23.
As shown in Figure 22, the piping joint 20 has a first upstream piping portion 21 that can be connected to a first upstream piping, a second upstream piping portion 22 that can be connected to a second upstream piping, and a downstream piping that can be connected to Downstream piping section 23. Furthermore, as shown in FIG. 25, the passage 21 a of the first upstream piping portion 21 and the passage 22 a of the second upstream piping portion 22 are connected to the passage 23 a of the downstream piping portion 23. In addition, the first upstream piping portion 21 is directed with respect to the downstream piping portion 23 so as to point in the same direction as the downstream piping portion 23.
Specifically, the passage extension axis O21 of the first upstream piping portion 21 is spaced apart by ΔY in parallel with respect to the passage extension axis O23 of the downstream piping portion 23 in the horizontal direction.
According to the piping joint 20, for example, if a linear rod-shaped cleaning tool is used as a cleaning tool inserted from the downstream piping part 23, the cleaning tool can be easily inserted into the first upstream piping part 21 and the second upstream piping part. Among 22, the first upstream piping portion 21 is parallel to the downstream piping portion 23. In addition, according to the piping joint 20, for example, if a rod-shaped cleaning tool with winding characteristics is used as a cleaning tool inserted from the downstream piping part 23, the cleaning tool can be easily inserted into the first upstream piping part 21 and the second upstream piping part 21. 2 Among the upstream piping portions 22, the second upstream piping portion 22 that is not parallel to the downstream piping portion 23. Therefore, according to the piping joint 20, the first upstream piping part 21 and the second upstream piping part 22 can be easily selected from among the first upstream piping part 21 and the second upstream piping part 22 to insert the cleaning Upstream piping required for tools. Therefore, according to the piping joint 23, there is no need to visually observe the two upstream piping parts of the first upstream piping part 21 and the second upstream piping part 22 that merge into one downstream piping part 23, and can be separated from the two upstream piping parts. , To easily select the required upstream piping for inserting cleaning tools, etc.
In the piping joint 23, it is preferable that the second upstream piping portion 22 is directed to the direction of the angle α12 that forms an acute angle with respect to the first upstream piping portion 21. In this case, it becomes easy to insert a cleaning tool etc. from the downstream piping part 23 into the 1st upstream piping part 21 and the 2nd upstream piping part 22, and it becomes easier to select a desired upstream piping part.
In addition, in the piping joint 20, the acute angle α12 is an angle in the range of 15° to 25°. In this case, more cleaning tools of different sizes can be easily inserted.
In addition, in the piping joint 20, the channel extension axis O21 of the first upstream piping portion 21 is offset from the channel extension axis O23 of the downstream piping portion 23 as described above. In this case, by adjusting the interval between the passage extension axis O21 of the first upstream piping portion 21 and the passage extension axis 23 of the downstream piping portion 23, cleaning tools etc. can be easily inserted into the insertion of the first upstream piping portion 21 The balance between the ease of insertion of the cleaning tool and the like into the second upstream piping portion 22 is set to a desired balance.
[Cleaning method of piping]
FIG. 26 is an enlarged cross-sectional view showing the piping 200 provided with the piping joint 20. As shown in FIG.
In FIG. 26, reference numeral 210 denotes the first upstream pipe 210 to which the first upstream pipe portion 21 of the pipe joint 20 is connected. Reference numeral 220 denotes the second upstream pipe 220 to which the second upstream pipe portion 22 of the pipe joint 20 is connected. In addition, the symbol 230 denotes the downstream piping 230 to which the downstream piping portion 23 of the piping joint 20 is connected.
The piping 200 can clean the required upstream piping by the following method.
The cleaning method of the piping 200 is a piping cleaning method in which a rod-shaped component is inserted into the piping 200 and the piping 200 is cleaned. The cleaning method includes a step of inserting the rod-shaped component from the downstream pipe 230.
In this example, a cleaning tool 70 is used as the rod-shaped component. The cleaning tool 70 is a cable tool that can be inserted into the pipe 200. In this example, the cleaning tool 70 is composed of a rod-shaped component 71 with a brush 72. Specific examples of the rod-shaped component 71 include a single-wire or multi-strand cable. Of course, the cable includes a metal cable, and also includes a synthetic resin cable. The brush 72 can be used as the above-mentioned closing assembly 61.
According to this embodiment, for example, if a linear cleaning tool 70A is used as the cleaning tool 70 inserted from the downstream pipe 230, the cleaning tool 70A can be easily inserted into the first upstream pipe 210 and the second upstream pipe 220 Among them, the first upstream pipe 210 is parallel to the downstream pipe 230. In addition, if the cleaning tool 70B with winding characteristics is used as the cleaning tool 70 inserted from the downstream pipe 230, the cleaning tool 70B can be easily inserted into the first upstream pipe 210 and the second upstream pipe 220 with respect to the downstream The pipe 230 is not a parallel second upstream pipe 220. Therefore, according to the cleaning method of the piping 200 with the piping joint 20, the first upstream piping 210 and the second upstream piping 220 can be easily selected from among the first upstream piping 210 and the second upstream piping 220 without having to look at the first upstream piping 210 and the second upstream piping 220. Used to insert the upstream piping required for the cleaning tool 70. Therefore, according to the cleaning method of the piping 200, it is possible to easily select the required upstream piping for inserting the cleaning tool and the like from the two upstream pipings without visually checking the two upstream pipings that merge into one downstream piping.
Moreover, the cleaning method of the piping 200 provided with the piping joint 20 can use at least any one of the linear cleaning module 70A and the cleaning module 70B which has a winding characteristic as the cleaning module 70. In this case, when the cleaning tool 70 is inserted into the first upstream pipe 210, if the linear cleaning assembly 70A is used as the cleaning tool, the desired first upstream pipe 210 can be more easily selected. In addition, when the cleaning tool 70 is inserted into the second upstream pipe 220, if the cleaning assembly 70B having a winding characteristic is used as the cleaning tool 70, the required second upstream pipe 220 can be more easily selected. In this case, it is easier to select the required upstream piping.
Furthermore, if any one of the first upstream pipe 210 and the second upstream pipe 220 of the pipe 200 is used as the exhaust-side vent pipe 160 of the above-mentioned drain pipe structure C, it is provided from the insertion port 230 provided in the downstream pipe 230 By inserting the rod-shaped assembly 50 provided with the closing assembly 51, the outflow pipe 130 can be cleaned.
[Cleaning method of drain pipe using piping 200]
The cleaning method of the piping 200 is a cleaning method of a drain pipe that cleans the outflow pipe 130 of the drain pipe structure C. In this case, the vent pipe 2 can be either the first upstream pipe 210 or the second upstream pipe 220. Thereby, by inserting the rod-shaped assembly 50 provided with the sealing assembly 51 into the passage 4 of the vent pipe 2 through the pipe joint 20 from the passage 230a of the downstream pipe 230, the sealing assembly 51 can be closed to seal the communication with the muffler 1. Exit A2.
Fig. 27 is a plan view showing an example of the piping structure laid in a collective housing such as an apartment.
In FIG. 27, the symbol W is an outer wall separating the exclusive part and the common part. Symbols DP1~DP4 are drain pipes. In this example, the drain pipe DP1 is the drain pipe of the kitchen system. In addition, the drain pipe DP2 is the drain pipe of the face washing system. In addition, the drain pipe DP3 is the drain pipe of the laundry system. In addition, the drain pipe DP4 is the drain pipe of the bathroom system. In this example, the drain pipe DP4 is the same drain pipe as the outflow pipe 130 connected to the storage tank 10 or the drain pipe connected to the outflow pipe 130.
In addition, in the example of FIG. 27, the vent pipe of the exhaust system constituted by the pipe 200 is included. In this example, the first upstream pipe 210 is a vent pipe of a bathroom system, and the second upstream pipe 220 is a vent pipe of a laundry room system. Each system in Fig. 27 is provided with an insertion port for inserting cleaning tools and the like. Symbol 240 is an insertion port of the exhaust system provided in the pipe 200.
The above-mentioned drain pipe structure C is a drain pipe structure of a bathroom system.
The cleaning method of the outflow pipe 130 connecting the pipe 200 to the vent pipe 2 is as described above, including: inserting the rod-shaped assembly 50 provided with the closure assembly 51 into the vent pipe 2 through the pipe joint 20 from the passage of the downstream pipe 230 In the passage 4, the step of closing the outlet portion A2 of the muffler 1 formed by the vent pipe 2 with the closing assembly 51, and the step of allowing the washing liquid to circulate through the passage of the outflow pipe 130 after the outlet portion A2 is closed.
According to the cleaning method described above, in the opening closing step, the rod-shaped assembly 50 is inserted into the insertion port 240 formed by the pipe 200. At this time, if a linear rod assembly is used as the rod assembly 50, the rod assembly 50 selects the first upstream pipe 210 due to the pipe joint 20 and is inserted into the passage of the vent pipe 2. That is, since the first upstream piping 210 is directed to the downstream piping 230 in the same direction as the downstream piping 230, the direction is given, so it is easy to close the connection piping portion 5 for cleaning the outflow pipe 130. The operation of the export department A2. Thereby, the outlet portion A2 of the muffler 1 formed by the vent pipe 2 of the muffler unit 101 can be closed by the closing assembly 51 provided in the rod-shaped assembly 50. Thereby, similar to the foregoing, the passage 4 of the vent pipe 2 can be blocked from the passage of the outflow pipe 130. After closing the outlet portion A2, in the washing liquid flow step, the high-pressure washing hose 60 with the high-pressure washing nozzle 61 is inserted from the insertion port 250 formed by the drain pipe DP4 of the bathroom system to make the washing clean. The liquid circulates through the passage of the outflow pipe 130. In this way, the passage of the outflow pipe 130 can be cleaned to clean the outflow pipe 130.
As described above, by the cleaning method of connecting the pipe 200 to the outflow pipe 130 of the vent pipe 2, the closing assembly 51 can also prevent the washing liquid from the outflow pipe 130 from flowing into the vent pipe 2. Therefore, according to the cleaning method of the outflow pipe 130 described above, the cleaning liquid does not flow into the vent pipe 2 and the outflow pipe 130 can be cleaned.
In addition, in the cleaning method of connecting the pipe 200 to the outflow pipe 130 of the vent pipe 2, if a rod-shaped assembly 50 having a flexural characteristic is used as the rod-shaped assembly 50, the rod-shaped assembly 50 can be inserted into the second upstream pipe 220. In addition, the "flexural characteristic" here refers to the property that flexural deformation remains due to the stick-shaped component being stored in the wound state. In addition, the "rod-shaped component with flexural properties" here includes a rod-shaped component having a curved shape given in advance.
[Drainage system to which the present invention can be applied]
FIG. 46 is a schematic system diagram showing an example of a drainage system to which the present invention can be applied in partial section. In FIG. 46, symbol 100 is an example of the drainage system of the storage tank to which an embodiment of the present invention can be applied. In this example, the drainage system 100 is a siphon drainage system. The siphon drainage system is a drainage system using the principle of siphon. According to the siphon drainage system, when the drainage from the water machine is performed, the drainage can be promoted by the siphon force generated by the siphon drainage pipe. The siphon drainage system is adopted as, for example, the drainage system of a multi-storey housing complex where a building is divided into multiple floors.
In this example, the drainage system 100 includes a water appliance EW, an appliance drainage pipe 120, a storage tank 10, and a siphon drainage pipe 130.
Water appliances EW are arranged on each floor of the building. Examples of water-using appliances EW include bathtubs (such as system sanitary wares), washbasins, and countertops. In this example, the water appliance EW is a bathtub.
The appliance drain pipe 120 connects the water appliance EW and the storage tank 10. In this example, the appliance drain pipe 120 is arranged in the space S under the floor. In this example, the under-floor space S is the space formed between the floor component FM and the floor FS of the building. Furthermore, in this example, the appliance drain pipe 120 is composed of an upstream portion 120a extending in the longitudinal direction and a downstream portion 120b extending in the lateral direction. The upstream part 120a is connected to the water appliance EW. The downstream portion 120b is connected to the upstream portion 120a. In this example, the downstream portion 120b is inclined downward from the upstream portion 120a toward the downstream. The downstream portion 120b is connected to the storage tank 10. In addition, in this example, a drain trap 121 is interposed in the middle of the downstream portion 120b.
The siphon drain pipe 130 connects the storage tank 10 and the stand pipe VP. The riser VP is a drainage pipe that penetrates each floor of the building in the up and down direction. In this example, the siphon drainage pipe 130 is composed of a horizontal pipe 130a arranged in the under-floor space S and a vertical pipe 130b penetrating the floor FS and hanging downward. The transverse pipe 130a is connected to the storage tank 10. In this example, the transverse tube 130a is almost horizontal and extends in the transverse direction without inclination. In detail, it is piped along the floor FS of the floor where the water appliance EW is installed, and is slightly horizontal without inclination. The vertical pipe 130b is connected to the transverse pipe 130a. The stand pipe 130b is connected to the stand pipe 150 through a pipe joint CJ. In detail, the vertical pipe 130b is extended to slightly below the horizontal pipe 130a to form a hanging portion to allow the siphon force (for example, negative pressure) to be generated.
In the drainage system 100 of this example, first, the height difference H1 between the outlet of the water appliance EW and the horizontal pipe 130a of the siphon drain pipe 130 is used to allow the liquid to flow out of the water appliance EW. The liquid (for example, water) that has flowed out from the water appliance EW flows into the storage tank 10 from the appliance drain pipe 120 due to its own weight (falling pressure). The storage tank 10 stores part of the liquid inside, and generally allows the remaining liquid to flow out to the siphon drain pipe 130.
In this example, the siphon drainage pipe 130 forms a siphon drainage channel that generates attractive force through the siphon force. In the siphon drainage channel, the siphon force generated in the siphon drainage pipe 130 can be used to promote the drainage of the liquid from the siphon drainage pipe 130.
In the siphon drainage channel of this example, the pressure drop from the drainage of the water appliance EW caused by the height difference H1 between the outlet of the water appliance EW and the horizontal pipe 130a of the siphon drain pipe 130 is used to fill the appliance drain pipe 120 with water. And the horizontal pipe 130a of the siphon drainage pipe 130, and the horizontal pipe 130a of the siphon drainage pipe 130 is filled with water, so that the drainage reaching the vertical pipe 130b (hanging length H2) of the siphon drainage pipe 130 starts at the vertical pipe 130b When it falls, the horizontal pipe 130a of the siphon drain pipe 130 becomes full of water to allow the siphon effect to occur. With the high-speed flow generated in the siphon drainage channel, the above-mentioned siphon action is used as the drainage power, and the drainage from the water appliance EW is performed, and the drainage is smoothly and quickly released into the inside of the pipe joint CJ.
In this example, since the siphon drainage system is used as the drainage system 100, the inside of the drainage pipe will become full-flow drainage filled with water. In this way, if a siphon drainage system is used as the drainage system 100, since liquid drainage will become full-flow drainage, it is possible to prevent solids from adhering to the pipe, and a small-diameter pipe can be used. Also, in this example, since a siphon drainage system is used as the drainage system 100, the drainage pipe can be arranged without inclination. In this way, if a siphon drainage system is used as the drainage system 100, the drainage pipes can be arranged without inclination, thereby reducing the height of the space under the floor where the drainage pipes are arranged. Moreover, in this example, since the siphon drainage system is used as the drainage system 100, the extended distance from the drainage source (such as various water appliances EW) to the standpipe VP (for example, from the outlet of the water appliance EW to the siphon drainage system) can be lengthened. The horizontal length L of the vertical pipe 130b of the pipe 130 is shown in FIG. 44), which can further increase the degree of freedom in the space configuration of the living room.
In addition, in the drainage system 100 using the siphon drainage system, it is assumed that a large amount of liquid will be drained from the water appliance EW at one time, and a storage tank 10 is provided between the appliance drainage pipe 120 and the siphon drainage pipe 130. The storage tank 10 can temporarily store a large amount of water discharged from the water appliance EW at one time until the promotion of drainage (generation of siphon force) starts.
[Exemplary storage tank]
FIG. 28 is a perspective view showing the inflow side of the exemplary storage tank 10A from above. Fig. 29 is a perspective view showing the outflow side of the storage tank 10A of Fig. 28 from above. The storage tank 10A has an inflow port A11 through which the liquid can flow in and an outflow port A12 through which the liquid can flow out, and the liquid flowing in from the inflow port A11 can be stored inside.
Fig. 30 is a front view showing the storage tank 10A from the inflow side. 31 is a rear view of the storage tank 10A from the outflow side. As shown in FIG. 31, the storage tank 10A has a bottom wall 11, a peripheral wall 12 standing up with respect to the bottom surface, and two partition walls 13 standing up with respect to the bottom surface. In this embodiment, the storage tank 10A has a top wall 14. The top wall 14 is connected to the upper end of the peripheral wall 12. Thereby, a space partitioned by the bottom wall 11, the peripheral wall 12, and the top wall 14 is formed inside the storage tank 10A. In addition, in the storage tank 10A, a vent H12 is formed on the peripheral wall 12. The vent H12 allows the internal space of the storage tank 10A to communicate with the outside. This prevents the inside of the storage tank 10A from becoming negative pressure.
FIG. 32 is a plan view showing the storage tank 10A from above. Fig. 33 shows a bottom view of the storage tank 10A from below. As shown in FIG. 33, in the storage tank 10A, the peripheral wall 12 has an inflow port portion 12a formed with an inflow port A11, and an outflow port portion 12b opposite to the inflow port portion 12a and formed with an outflow port A12. In this example, the peripheral wall 12 has an inflow port portion 12a, an outflow port portion 12b, an inflow side adjacent portion 12c adjacent to the inflow port portion 12a, an outflow side adjacent portion 12d adjacent to the outflow port 12b, and side surfaces Part 12e. In addition, in this example, the peripheral wall 12 has an inflow side corner portion 12f that connects the inflow side adjacent portion 12c and the side portion 12e, and an outflow side corner portion 12 that connects the side surface portion 12e and the outflow side adjacent portion 12d.
As shown in FIG. 33, in the storage tank 10A, the bottom wall 11 is divided by the peripheral wall 12. As shown in FIG. 32, the top wall 14 is also divided by the peripheral wall 12 in the same way as the bottom wall 11. In addition, in this example, the top wall 14 has two openings A13. The opening A13 allows the internal space of the storage tank 10A to communicate with the outside. Also, in this example, the peripheral wall 12 is on the top wall 14 side and has recesses 12h at each position of the inflow-side corner portion 12f and the outflow-side corner portion 12g.
Fig. 34 is a sectional view taken along line A-A in Fig. 30; Fig. 34 is a maximum cross section of the storage tank 10A. Figure 35 is a B-B sectional view of Figure 30. Fig. 35 is a cross section passing through the center Oa of the inflow port A11. Fig. 36 is a cross-sectional view taken along line C-C in Fig. 31; Fig. 36 is a cross section through the center Ob of the outflow port A12. As shown in FIG. 34 and the like, the storage tank 10A has a liquid passage area R1 extending between the inflow port A11 and the outflow port A12, and liquid retention areas arranged at positions on both sides of the liquid passage area R1. R2. In the storage tank 10A, the liquid passage region R1 connects the inflow port A11 and the outflow port A12 to guide the liquid flowing in from the inflow port A11 to the outflow port A12. The liquid passage region R1 may extend in a curved or meandering shape in a plan view. In this example, the liquid passing area R1 extends linearly as shown in Figs. 34 to 36. Thereby, the liquid passing region R1 becomes the shortest path connecting the inflow port A11 and the outflow port A12 as the liquid passing path.
On the other hand, as shown in FIG. 34 and the like, the two liquid retention regions R2 are arranged at positions on both sides of the liquid passage region R1 sandwiching the liquid passage region R1 and are adjacent to the liquid passage region R1. The two liquid retention regions R2 can respectively retain the liquid flowing in from the inflow port A11.
Moreover, as shown in FIG. 34 and the like, in the storage tank 10A, the inflow port portion 12a of the peripheral wall 12 is recessed to the outflow side more than the inflow side abutting portion 12c adjacent to the inflow port portion 12a. In this example, as shown in FIG. 34 and the like, the inflow side adjacent portion 12c of the peripheral wall 12 is connected to the inflow port portion 12a through two inflow side corner portions 12j and 12i.
In addition, in the storage tank 10A, the outflow port portion 12b of the peripheral wall 12 protrudes to the outflow side more than the outflow-side adjacent portion 12d. In this example, as shown in FIG. 34 and the like, the outflow-side abutting portion 12d of the peripheral wall 12 is connected to the outflow port portion 12b.
Fig. 37 is a right side view showing the right side of the storage tank 10A. Fig. 38 is a left side view showing the left side of the storage tank 10A. As shown in FIG. 37 and the like, in the storage tank 10A, the inflow port A11 is located below the peripheral wall 12 of the peripheral wall 12 except for the inflow port portion 12a and the outflow port portion 12b. The outflow port A12 is also located below the peripheral wall 12 of the peripheral wall 12 except for the inflow port portion 12a and the outflow port portion 12b, like the inflow port A11.
Fig. 39 is a cross-sectional view taken along line D-D of Fig. 32; Fig. 39 is a cross-section of the storage tank 10A divided into two equal parts. FIG. 39 shows the internal structure of the liquid passing area R1 and the liquid retention area R2 in the inside of the storage tank 10A. Fig. 40 is an E-E sectional view of Fig. 32; FIG. 40 shows the internal structure of the liquid retention region R2 in the interior of the storage tank 10A. As shown in FIG. 39, in the storage tank 10A, the inflow port A11 is constituted by the inflow passage P1 formed in the inflow port portion 12a of the peripheral wall 12. In addition, the outflow port A12 is constituted by the outflow passage P2 formed in the outflow port portion 12b of the peripheral wall 12. In the storage tank 10A, the liquid passage area R1 is defined by the inner surface 12fa of the inlet portion 12a of the peripheral wall 12, the inner surface (bottom surface) 11fa of the lower side portion 11a of the bottom wall 11 among the bottom walls 11, and the flow of the peripheral wall 12 The inner surface 12fb of the outlet portion 12b is formed. In the storage tank 10A, as shown in FIG. 39, the bottom surface F1 of the liquid passing region R1 is formed of a flat surface. In this example, the bottom surface F1 of the liquid passage region R1 is defined by the inner surface 12fa of the inflow port portion 12a of the peripheral wall 12 from the lowermost end of the inner surface 12fa (the extension of the inflow port portion 12a on the lowermost side in the liquid flow direction) End) 12fa1, the lowermost end of the inner surface 11fa of the inner surface 11fa of the lower side portion 11a of the bottom wall 11 (the extension end of the lower side portion 11a extending in the lowermost side of the liquid flow direction) 12fa1, and the peripheral wall 12 The lowermost end of the inner surface 12fb among the inner surfaces 12fb of the outflow portion 12b (the extending end of the outflow portion 12b on the lowermost side in the liquid flow direction) is formed by the lowermost end 12fb1.
In addition, in FIG. 39, the symbol 12fP1 is the lowermost end of the inflow passage P1 (the extending end of the inflow passage P1 on the lowermost side in the liquid flow direction). In addition, the symbol 12fp2 is the lowermost end of the outflow channel P2 formed by the outflow port portion 12b (the extension end of the outflow channel P2 that extends in the lowermost side of the liquid flow direction). As shown in Fig. 39, etc., in the storage tank 10A, the lowermost end (bottom surface) 11fa1 of the lower side portion 11a of the bottom wall 11 is inclined downward toward the downstream, and the outflow port A12 is provided at a position lower than the inflow port A11. .
On the other hand, as shown in FIG. 34 and the like, the two liquid retention areas R2 are respectively formed by the peripheral wall 12 except for the inflow port portion 12a and the outflow port portion 12b in the peripheral wall 12, and the liquid passage area R1 in the plan view. Be divided. In detail, in a plan view, the two liquid retention regions R2 are formed by the inner surface 12fi of the inflow-side corner portion 12i, the inner surface 12fj of the inflow-side corner portion 12j, the inner surface 12fc of the inflow-side adjacent portion 12c, and the inflow The inner surface 12ff of the side corner portion 12f, the inner surface 12fe of the side portion 12e, the inner surface 12fg of the outflow-side corner portion 12g, the inner surface 12fd of the outflow-side adjacent portion 12d, and the liquid passage area R1 are divided. In addition, as shown in FIG. 41 and the like, the two liquid retention regions R2 are respectively formed from the inner surface (bottom surface) 11fb of the upper side portion 11b of the bottom wall 11 among the bottom wall 11 and the inner surface (top surface) 14f of the top wall 14 Constituted. In addition, in the storage tank 10A, as shown in FIG. 40, the bottom surface F2 of the liquid retention region R2 is composed of a flat surface. In this embodiment, the bottom surface F2 of the liquid retention region R2 is formed by the inner surface 11fb of the upper portion 11b of the bottom wall 11.
Fig. 41 is a perspective view showing the F-F cross section of Fig. 32 from the inflow side. The F-F cross section is a cross section of a plane including the central axis of the two openings A13 of the top wall 14. As shown in FIG. 41, the groove G is arranged in the liquid passage region R1. The groove G is arranged between the inflow port A11 and the outflow port A12. As shown in FIG. 41 and the like, in the storage tank 10A, a part of the groove G is formed by the inner surface 11fa of the lower portion 11a of the bottom wall 11. In the storage tank 10A, the lower portion 11a of the bottom wall 11 is recessed with respect to the upper portion 11b of the bottom wall 11. In this example, the inner surface 11fa of the lower portion 11a of the bottom wall 11 is composed of the deepest surface 11fa1 and two side surfaces 11fa2. The deepest surface 11fa1 is the deepest surface (lowest end) in the bottom wall 11. The deepest surface 11fa1 is connected to the inner surface 11fb of the upper portion 11b of the bottom wall 11 through the side surface 11fa2. The deepest surface 11fa1 is connected to the side surface 11fa2 by a curved surface viewed from the extending direction of the liquid passage region R1. The side surface 11fa2 is connected to the inner surface 11fb of the upper portion 11b by a curved surface viewed from the extending direction of the liquid passage region R1.
In addition, in the storage tank 10A, a part of the groove G is formed by the inner surface 12fb of the outflow port portion 12b of the peripheral wall 12. As shown in FIG. 31 and the like, in the storage tank 10A, the outflow port portion 12b of the peripheral wall 12 extends to the lower side so that the outflow port A12 will be a position lower than the outflow side adjacent portion 12d. As shown in FIG. 41, in this example, the inner surface 12fb of the outlet portion 12b of the peripheral wall 12 includes the deepest surface 12fb1 and two side surfaces 12fb2. The deepest surface 12fb1 is connected to the side surface 12fb2 by a curved surface viewed from the extending direction of the liquid passage region R1. The side surface 12fb2 and the side surface 11fa2 of the lower portion 11a of the bottom wall 11 constitute the same plane. The deepest surface 12fb1 is the deepest surface (lowest end) among the inner surfaces 12fb of the outflow port portion 12b of the peripheral wall 12. The deepest surface 12fb1 and the deepest surface 11fa1 of the lower portion 11a of the bottom wall 11 constitute the same plane. In addition, the deepest surface 12fb1 is connected to the inner surface 13f1 of the partition wall 13 through the side surface 12fb2. The side surface 12fb2 and the inner surface 13f1 of the partition wall 13 constitute the same plane.
Furthermore, as shown in FIG. 35 and the like, in the storage tank 10A, a part of the groove G is formed by the inner surface 12fa of the inflow port portion 12a of the peripheral wall 12. As shown in FIG. 30 and the like, in the storage tank 10A, the inflow port portion 12a of the peripheral wall 12 extends to the lower side so that the inflow port A11 will be a position lower than the inflow side adjacent portion 12c. As shown in FIG. 35, in this example, the inner surface 12fa of the inlet portion 12a of the peripheral wall 12 is composed of the deepest surface 12fa1 and two side surfaces 11fa2. The deepest surface 12fa1 is connected to the side surface 12fa2 by a curved surface viewed from the extending direction of the liquid passage region R1. The side surface 12fa2 and the side surface 11fa2 of the lower portion 11a of the bottom wall 11 constitute the same plane. As shown in FIG. 39 and the like, the deepest surface 12fa1 is the deepest surface (lowest end) among the inner surfaces 12fa of the inflow port portion 12a of the peripheral wall 12. The deepest surface 12fa1 and the deepest surface 11fa1 of the lower portion 11a of the bottom wall 11 constitute the same plane. Moreover, as shown in FIG. 35 etc., the deepest surface 12fa1 is connected to the inner surface 12fi of the inflow-side corner part 12i through the side surface 12fa2.
As shown in FIG. 36 and the like, the two partition walls 13 extend toward the outflow port A12. In the storage tank 10A, it is ensured that the outflow port A12 extends toward the outflow port A12 in the same manner. Here, "will ensure that the outflow port A12" means "the opening of the outflow port A12 is not closed".
Moreover, as shown in FIG. 39, in the storage tank 10A, the partition wall 13 has a height H13 at which the liquid can overflow from the partition wall 13. In this example, the height H13 of the partition wall 13 is the height from the bottom surface F1 of the liquid passing region R1. Thereby, the liquid passing through the liquid passage region R1 can flow to the liquid retention region R2 when the head of the liquid becomes a certain level or higher.
In addition, as shown in FIG. 39 and the like, in the storage tank 10A, the height H13 of the partition wall 13 increases toward the outflow port A12. As shown in FIG. 39 and the like, in this example, the top surface 13f2 of the partition wall 13 is a curved surface formed by a curve whose cross-sectional shape viewed from the side protrudes toward the outflow side. As shown in FIG. 39, in this example, the curve of the top surface 13f2 of the partition wall 13 is formed by the radius of curvature R13.
In the storage tank 10A, the partition wall 13 is formed as a part of the outflow port portion 12 b of the peripheral wall 12. The partition wall 13 stands up from a position adjacent to the groove G. Fig. 42 is a perspective view showing the G-G section of Fig. 32 from the inflow side. The G-G cross section is a cross section of a plane including the boundary between the peripheral wall 12 and the bottom wall 11. As shown in FIG. 42 and the like, in the storage tank 10A, the inner surface 13f1 of the partition wall 13 is connected to the side surface 12fb2 of the inner surface 12fb among the inner surface 12fb of the outflow port portion 12b of the peripheral wall 12, and is formed with the side surface 12fb2 same plane. In addition, in the storage tank 10A, the inner surface 12fd of the outflow-side abutting portion 12d of the peripheral wall 12 adjacent to the outflow port portion 12b of the peripheral wall 12 is connected to the top surface 13f2 of the partition wall 13 and is connected to the top surface 13f2 of the partition wall 13 The top surface 13f2 forms the same surface. Here, "same plane" refers to "smoothly connected continuous planes", and also includes any one of "plane" and "curved surface".
Fig. 43 is a cross-sectional view taken along line H-H of Fig. 32; As shown in FIG. 43, in the storage tank 10A, the end edge portion 13e of the top surface 13f2 of the partition wall 13 is a curved surface protruding toward the inside of the storage tank 10A.
Moreover, as shown in FIG. 40, in the storage tank 10A, the inner surface 12fd of the adjoining portion 12d on the outflow side of the peripheral wall 12 is a curved surface formed by a curve whose cross-sectional shape is convex toward the outflow side when viewed from the side. As shown in FIG. 40, in this embodiment, with regard to the inner surface 12fd of the outflow-side abutting portion 12d, the curve on the side of the bottom wall 11 is formed by a larger radius of curvature Rd12. In this example, the radius of curvature Rd12 is the same as the radius of curvature R13 of the curve forming the top surface 13f2 of the partition wall 13. On the other hand, the curve on the top wall 14 side is composed of a radius of curvature Rd14 that is smaller than the curve on the bottom wall 11 side.
The inventors of this case have conducted painstaking experimental research and found that in the storage tank used in the siphon drainage system, when the liquid head near the outlet of the storage tank is rapidly increased, a large amount of liquid can flow out quickly and smoothly, and then The time until the siphon force is generated can be shortened. The storage tank 10A related to this embodiment is an invention that focuses on rapidly increasing the liquid head near the outflow port A12, and allows a large amount of liquid to flow out quickly and smoothly.
As shown in FIG. 39 and the like, the storage tank 10A is a storage tank that has an inflow port A11 through which a liquid can flow in and an outflow port A12 through which liquid can flow out, and can store the liquid flowing in from the inflow port A11 inside. The storage tank 10A has a peripheral wall 12 standing relative to the bottom surface, and two partition walls 13 standing relative to the bottom surface. The peripheral wall 12 has an inflow port portion 12a formed with an inflow port A11 and is opposed to the inflow port portion 12a. The outflow port part 12b of the outflow port A12 is formed in the same direction. The two partition walls 13 extend toward the outflow port A12.
According to the storage tank 10A, by providing the partition wall 13, as shown by the arrow D1, the flow of the liquid toward the outflow port A12 can be ensured, and the liquid head near the outflow port A12 can be quickly increased. Even if the liquid (drain) flowing in from the inflow port A11 is small, according to the storage tank 10A, the partition wall 13 is provided in the storage tank 10A to quickly increase the liquid head near the outflow port A12. As a result It can make the siphon start easy to happen. For example, even in the case where a large amount of liquid flows in from the inflow port A11, in the initial stage, a small amount of liquid reaches the vicinity of the outflow port A12. In this way, even if the liquid near the outflow port A12 is small, according to the storage tank 10A, the partition wall 13 can be provided in the storage tank 10A to quickly increase the liquid head near the outflow port A12. The siphon start becomes easy to happen. Therefore, according to the storage tank 10A related to this embodiment, a large amount of liquid can flow out quickly and smoothly. In particular, as with the storage tank 10A, if the storage tank 10A is used in a siphon drainage system, even if a large amount of liquid is discharged, the time until the siphon force is generated can be shortened.
Moreover, as shown in FIG. 39, in the storage tank 10A, the partition wall 13 has a height H13 at which the liquid can overflow from the partition wall 13. In this case, when the liquid head in the vicinity of the outflow port A12 becomes more than a certain level, the liquid in the vicinity of the outflow port A12 can be released from the partition wall 13 as shown by the arrow D2 in FIG. 42 and the like. Therefore, according to the storage tank 10A, the flow of the liquid is not easily obstructed near the outflow port A2, so that the drainage can be performed more quickly and smoothly.
In addition, as shown in FIG. 39, in the storage tank 10A, the height H13 of the partition wall 13 increases toward the outflow port A12. In this case, it is possible to increase the liquid head near the outflow port A12, and increase the amount of liquid released from the partition wall 13 as it moves away from the outflow port A12. Therefore, according to the storage tank 10A, it is possible to achieve a balance between shortening the time until the siphon force is generated and smooth drainage (achieved at the same time).
In addition, as shown in FIG. 39, in the storage tank 10A, the outflow port A12 is provided at a lower position than the inflow port A11. In this case, water can be drained more quickly and smoothly. Therefore, according to the storage tank 10A, the time until the siphon force is generated can be further shortened.
Also, as shown in FIG. 42 and the like, in the storage tank 10A, the partition wall 13 is formed as a part of the outflow port portion 12b of the peripheral wall 12, and the outflow side adjacent portion of the peripheral wall 12 adjacent to the outflow port portion 12b of the peripheral wall 12 The inner surface 12fd of 12d is connected to the top surface 13f2 of the partition wall 13 and forms the same surface as the top surface 13f2 of the partition wall 13. In this case, as indicated by the arrow D2, the liquid released from the partition wall 13 can be more released along the inner surface 12fd of the adjoining portion 12d on the outflow side of the peripheral wall 12. Therefore, according to the storage tank 10A, the flow of the liquid is not easily obstructed in the vicinity of the outflow port A12, so that water can be discharged more quickly and smoothly.
Moreover, as shown in FIG. 43, in the storage tank 10A, the end edge portion 13e of the top surface 13f2 of the partition wall 13 is a curved surface protruding toward the inside of the storage tank 10A. In this case, as indicated by the arrow D2, the liquid in the vicinity of the outflow port A12 can be efficiently and smoothly discharged from the partition wall 13 along the inner surface 12fd of the outflow-side adjacent portion 12d of the peripheral wall 12. Therefore, according to the storage tank 10A, rapid and smooth drainage can be efficiently performed.
Furthermore, as shown in FIG. 40 and the like, in the storage tank 10A, the inner surface 12fd of the outflow-side abutting portion 12d of the peripheral wall 12 is a curved surface formed by a curve whose cross-sectional shape when viewed from the side protrudes toward the outflow side. In this case, as indicated by the arrow D3, the liquid released from the partition wall 13 can be further released along the inner surface 12fd of the adjacent portion 12d on the outflow side of the peripheral wall 12 while generating convection (circulation) in the vertical direction (longitudinal). . Therefore, according to the storage tank 10A, drainage can be performed more quickly and smoothly.
In particular, as shown in FIG. 34 and the like, the storage tank 10A has a liquid passage region R1 extending between the inflow port A11 and the outflow port A12, and liquids arranged at positions on both sides of the liquid passage region R1. Retention area R2. In this case, as indicated by arrows D1 and D2, the liquid can be allowed to flow to the liquid passing region R1, and the remaining liquid can be retained in the liquid retention region R2. Therefore, according to the storage tank 10A, it is possible to prevent the length in the extending direction of the liquid passage region R1 from becoming longer, and to store a larger amount of liquid in the liquid retention region R2. Therefore, according to the storage tank 10A, the flow of the liquid is not easily hindered in the vicinity of the outflow port A12, so that a larger amount of liquid can be continuously discharged quickly and smoothly in a certain amount. In addition, in this case, the liquid flowing from the liquid passage region R1 can be caused to convect (circulate) between the liquid passage region R1 and the liquid retention region R2 as indicated by the arrow D4. Therefore, according to the storage tank 10A, it is possible to prevent the length in the extending direction of the liquid passage region R1 from becoming longer, and to discharge a larger amount of liquid quickly and smoothly. Furthermore, in this case, since the liquid flowing from the liquid passage region R1 convects between the liquid passage region R1 and the liquid retention region R2, it is difficult for dirt to adhere to the inside of the storage tank 10A. Thereby, the number of operations required for cleaning the storage tank 10A can be reduced.
In addition, according to the storage tank 10A, since the liquid retention area R2 is arranged at each position on both sides of the liquid passage area R1, in order to ensure the volume of the liquid retention area R2, for example, it is only necessary to increase the liquid retention area R2. The size (area) in the extending direction is sufficient, and it is not necessary to increase the height of the liquid retention area R2, or even the height of the storage tank 10A. Therefore, like the storage tank 10A, for example, if the liquid retention region R2 is placed on both sides of the liquid passage region R1 and the direction in which the liquid retention region R2 extends is the horizontal direction, the vertical direction of the peripheral wall 12 becomes the vertical direction. In this way, if the storage tank 10A is installed on the floor FS, etc., it is not necessary to ensure the height of the under-floor space S to be large, and a large amount of liquid can be discharged quickly and smoothly. Here, "the height of the storage tank 10A" refers to the height (dimension) of the storage tank 10A in the vertical direction. In other words, it is the height (dimension) in the erection direction of the peripheral wall 12 of the storage tank 10A.
From the above point of view, more specifically, for example, in the storage tank 10A, the height of the storage tank 10A can be lower than the width of the storage tank 10A. The height of the storage tank 10A is preferably less than 1/2 of the width of the storage tank 10A. The height of the tank 10A is more preferably less than 1/3 of the width of the storage tank 10A. Here, "the width of the storage tank 10A" refers to the two peripheral walls of the peripheral walls 12 of the storage tank 10A facing each other that are orthogonal to the height direction of the storage tank 10A and the extending direction of the liquid passage region R1 Maximum width of 12 rooms. That is, referring to FIG. 34, the width (dimension) between the outer surfaces of two peripheral walls (side walls) 12e in the storage tank 1A arranged in the vertical direction of the drawing.
Moreover, as shown in FIG. 34 and the like, in the storage tank 10A, the inflow port portion 12a of the peripheral wall 12 is more recessed to the outflow side than the inflow side abutting portion 12c of the peripheral wall 12 adjacent to the inflow port portion 12a. In this case, the liquid flowing in the storage tank 10A will easily return to the outflow direction of the liquid. As a result, it can be discharged more quickly and smoothly. In particular, in the storage tank 10A, since the liquid retention area R2 is arranged adjacent to the liquid passage area R1, the liquid flowing from the liquid passage area R1 can easily return to the liquid passage area R1. That is, in the storage tank 10A, it can be made to efficiently convection between the liquid passing region R1 and the liquid retention region R2. Therefore, according to the storage tank 10A, a large amount of liquid can be discharged more quickly and smoothly through the liquid passing area R1. In addition, in the storage tank 10A, dirt becomes less likely to adhere to the inside of the storage tank 10A. As a result, the number of operations required for cleaning the storage tank 10A can be further reduced.
Moreover, as shown in FIG. 42 etc., the partition wall 13 is erected from the position adjacent to the groove part G. As shown in FIG. In the storage tank 10A, the groove G is arranged in the liquid passage region R1. In this case, even if it is a small amount of liquid, the groove G can still gather the liquid more quickly. As a result, water can be drained more quickly and smoothly. In the storage tank 10A, the partition wall 13 stands up from a position adjacent to the groove G where the liquid passage region R1 is arranged. In this case, even if it is a small amount of liquid, the liquid can still be quickly collected in the liquid passage region R1. Therefore, according to the storage tank 10A, a large amount of liquid can be discharged more quickly and smoothly through the liquid passing area R1. Particularly in this case, since the partition wall 13 is erected from a position adjacent to the groove G where the liquid passage region R1 is arranged, the liquid head in the vicinity of the outflow port A12 can be raised more quickly. Therefore, according to the storage tank 10A, a large amount of liquid can be discharged more quickly and smoothly through the liquid passing region R1.
In addition, as shown in FIG. 34 and the like, of the inner surface 12f of the peripheral wall 12 of the storage tank 10A, the inner surface 12f of the peripheral wall 12 that forms a corner in the storage tank 10A in a plan view has a contour shape in a plan view It is a curved surface formed by a curve. In the storage tank 10A, for example, the inner surface 12fi of the inflow side corner portion 12i, the inner surface 12fi of the inflow side corner portion 12i, the inner surface 12fj of the inflow side corner portion 12j, the inner surface 12ff of the inflow side corner portion 12f, and the outflow side The contour shape of the inner surface 12fg of the corner portion 12g in a plan view is a curved surface formed by a curve. In this case, the liquid flowing from the liquid passage region R1 can be efficiently convective between the liquid passage region R1 and the liquid retention region R2. Therefore, according to the storage tank 10A, a large amount of liquid can be discharged more smoothly, and the number of operations required for cleaning the storage tank 10A can be further reduced.
In addition, the inventor of the present case has made painstaking experimental research and found that in the storage tank used in the siphon drainage system, the accumulation of liquid near the outlet of the storage tank can also allow a large amount of liquid to flow out quickly and smoothly. Furthermore, the time until the siphon force is generated can be shortened. The storage tank 10A related to the present embodiment is an invention that focuses on the situation where the liquid is collected near the outflow port A12, so that a large amount of liquid can flow out quickly and smoothly.
In the storage tank 10A, the outflow port portion 12b of the peripheral wall 12 protrudes to the outflow side more than the outflow side abutting portion 12d of the peripheral wall 12 adjacent to the outflow port portion 12b of the peripheral wall 12. In this case, it becomes a structure that easily collects the liquid in the vicinity of the outflow port A12. Therefore, according to the storage tank 10A, a large amount of liquid can flow out quickly and smoothly. In particular, if the storage tank 10A is used in a siphon drainage system like the storage tank 10A, even if a large amount of liquid is discharged, the time until the siphon force is generated can be shortened.
Fig. 44 is a cross-sectional view taken along line I-I of Fig. 32; The I-I cross-section is a cross-section of a plane including the upper end of the outflow-side abutting portion 12d of the peripheral wall 12. As shown in FIG. 44, in the storage tank 10A, the cross-sectional shape of the inner surface 12fb of the outflow port portion 12b of the peripheral wall 12 as viewed from the liquid flow direction is a racetrack shape. In this case, it becomes a structure that makes it easier to collect the liquid near the outflow port A12. In the storage tank 10A, the racetrack shape is a flat shape extending in the lateral direction (horizontal direction). Exemplary racetrack shapes include a racetrack shape with a single-sided single-centered circle with one center O1 arranged on one side, a single-sided double-centered circle with two centers O1 and a center O2 arranged on one side, or a single-sided On the side, there are three single-sided three-centered racetracks with a center O1, a center O2, and a center O3. Furthermore, an example of a racetrack shape of a single-sided tri-centered circle is a racetrack shape with three centers O1~O3 aligned with a single-sided tri-centered circle, and two centers O1 and a center O2 between the center O3 and the center O3 are arranged on the outside. The shape of a single-sided sharp three-centered circle, or the shape of a blunt three-centered circle with two centers O1 and one center O2 between the center O3 and the center O3. In this embodiment, the cross-sectional shape of the outflow port A2 is similar to the shape of a racetrack with a sharp three-centered circle on one side. In addition, in this embodiment, the two centers O1 and the center O2 sandwiching one center O2 are not aligned, and the line between A and B is a straight line. Also, the other sections are curved lines.
In addition, in terms of easy accumulation of liquid, the inner surface 12fb of the outflow port portion 12b of the peripheral wall 12 is preferably such that the cross-sectional shape viewed from the liquid flow direction is a racetrack shape. On the other hand, the cross-sectional shape of the inner surface 12fb of the outflow port portion 12b of the peripheral wall 12 as viewed from the liquid flow direction may be a circle or an ellipse. If the inner surface 12fb of the outflow port portion 12b of the peripheral wall 12 is circular or elliptical when viewed from the liquid flow direction, a large flow rate of liquid can easily flow. In addition, the circular and elliptical cross-sectional shapes are cross-sectional shapes suitable for special conditions of large flow. Therefore, especially when the liquid is to be continuously flowed like the storage tank 10A, it is preferable to have a racetrack shape as illustrated in FIG. 45 and the like.
In particular, in the storage tank 10A, as shown in FIG. 34 and the like, the inner surface 12fb of the outflow port portion 12b of the peripheral wall 12 includes a curved surface that becomes thinner toward the outflow port A12. In this case, it becomes a structure that makes it easier to collect the liquid near the outflow port A12.
In addition, as shown in FIG. 43, in the storage tank 10A, the bottom surface F2 of the liquid retention region R2 is viewed from the extending direction of the liquid passage region R1, and is inclined downward toward the liquid passage region R1, and is connected to the liquid. A plane passing through the bottom surface F1 of the region R1. In this case, the liquid in the liquid stagnation region R2 will easily flow into the liquid passage region R1 along the bottom surface F2 of the liquid stagnation region R2. Therefore, according to the storage tank 10A, a large amount of liquid can be discharged more smoothly through the liquid passing area R1. In the storage tank 10A, the bottom surface F2 of the liquid retention area R2 is expressed with respect to the horizontal axis (in FIG. 43, it is represented by a straight line Oy that appears when the horizontal plane is viewed from the extending direction of the liquid passage area R1.) and is represented by an angle θ11b. tilt. The angle θ11b can be appropriately set according to the content and size of the storage tank 10. The angle θ11b may be, for example, an angle of 0.5° to 5°. If the angle θ11b is less than 0.5°, the effect of convection to form drainage is small. Also, if the angle θ11b is 5° or more, the inclination will become too large, so the liquid does not completely enter the outflow port A12 and water may overflow, and the overflowed liquid will not flow smoothly to the liquid retention area R2 .
In addition, in the storage tank 10A, as shown in FIG. 43, the bottom surfaces F2 of the two liquid retention regions R2 are inclined downward as they approach each other. In this case, if the lower ends of the bottom surfaces F2 of the two liquid retention regions R2 are directly connected, the liquid passage region R1 can be a V groove with the directly connected portion of the two bottom surfaces F2 as the bottom of the groove. Alternatively, if the lower ends of the bottom surfaces F2 of the two liquid retention regions R2 are connected through a plane, the liquid passage region R1 can be made into a trapezoidal V groove with the plane as the bottom of the groove. The bottom surfaces F1 of the liquid passage regions R1 are all located at the same height position as the bottom surfaces F2 of the two liquid retention regions R2.
In contrast, as shown in FIG. 39 and the like, in the storage tank 10A, the bottom surface F1 of the liquid passage region R1 is arranged at a lower position than the bottom surface F2 of the liquid retention region R2. In this case, a large amount of liquid can be collected in the liquid passing area R1. Therefore, according to the storage tank 10A, a large amount of liquid can be discharged more smoothly through the liquid passing area R1. In the storage tank 10A, the groove G is arranged in the liquid passage region R1. The lowermost end 12fP2 of the outflow port A12 is arranged at a position lower than the bottom surface F2 of the liquid retention region R2.
In addition, as shown in FIGS. 39 to 43, etc., in the storage tank 10A, at least the inner surface 12f of the peripheral wall 12 in the liquid retention region R2 is viewed from the direction in which the peripheral wall 12 extends. The curved surface formed by the convex curve. In this case, the liquid flowing from the liquid passage region R1 generates convection (circulation) in the vertical direction (longitudinal direction), and is further released along the inner surface 12fd of the outflow-side adjacent portion 12d of the peripheral wall 12. Therefore, according to the present embodiment, the convection between the liquid passing area R1 and the liquid retention area R2 can be performed more efficiently. Therefore, according to the storage tank 10A, a large amount of liquid can be discharged more smoothly, and the number of operations required for cleaning the storage tank 10A can be further reduced.
In addition, in the storage tank 10A, the liquid passage area R1 is shown in FIGS. 30 and 31, and the outflow port A12 is viewed from the direction of the liquid flow (viewed from the extending direction of the liquid passage area R1), and overlaps with the inflow port A11. At least part of them is aligned like a straight line.
Referring to FIG. 30, a specific example related to the alignment of the inflow port A11 and the outflow port A12 is, for example, a method of combining any one of the following (1) to (3).
(1) The center Oa of the inflow port A11 and the center Ob of the outflow port 1b are aligned on the same plumb line Oz when viewed from the extending direction of the liquid passage region R1.
(2) Adjust the size of the inner diameter of the inflow port A11 (the size of the radius ra of the inflow port A11) and the size of the inner diameter of the outflow port A12 (the size of the radius rb of the outflow port A12).
(3) Adjust the interval ΔZ between the center Oa of the inflow port A11 and the center Ob of the outflow port A12 in the vertical direction (direction of the vertical straight line Oz).
In the storage tank 10A, all the methods (1) to (3) are used to align the outflow port A12 with at least a part of the inflow port A11 in a straight line when viewed from the extending direction of the liquid passage area R. In particular, as shown in FIG. 30, in the storage tank 10A, in (2), the size of the inner diameter of the outflow port A12 is set to be smaller than the size of the inner diameter of the inflow port A11. Thereby, the amount of liquid flowing out from the outflow port A12 becomes smaller than the amount of liquid flowing in from the outflow port A11. In addition, the storage tank 10A is shown in FIG. 30. In (3), the center Oa of the inflow port A11 and the center Ob of the outflow port A12 are adjusted in the vertical direction by adjusting the vertical interval ΔZ so that the upper end of the opening of the outflow port A12 overlaps the flow The lower end of the opening of the entrance A11.
[Other exemplary storage tanks]
FIG. 45 is a perspective view showing the inflow side of another exemplary storage tank 10B from above. In the storage tank 10B, the peripheral wall 12 surrounds the two liquid retention regions R2 arranged on both sides of the liquid passage region R1 and the liquid passage region R1 to shape the outer shape of the storage tank 10B into a butterfly shape (H shape). In the storage tank 10B, the partition wall 13 is a wall different from the peripheral wall 12.
The above content is used to illustrate the exemplary implementation of the present invention, and various changes can be made without departing from the scope of the patent application. For example, the storage tank 10 may be integrally manufactured by resin and by injection molding. In particular, the storage tank 10A can be manufactured by blow molding. However, the manufacturing method of the storage tank 10 is not limited to injection molding. In the storage tank 10, the presence or absence of the top wall 14 formed at the upper end of the peripheral wall 12 is not limited. In addition, the drainage pipe structure and the structure of the drainage system 100 related to the present invention are not limited to the above-mentioned structure. For example, in the appliance drain pipe 120 and the siphon drain pipe 130, although the upstream part (horizontal pipe) and the downstream part (vertical pipe) are described as an integrated drain pipe, the upstream part (horizontal pipe) can be described as an integrated drain pipe. The pipe) and the downstream part (vertical pipe) are separate drain pipes, and these drain pipes are connected to each other to serve as the appliance drain pipe 120 or the siphon drain pipe 130. In addition, the various configurations adopted in the storage tank 10A or the storage tank 10B can be replaced with each other as appropriate.
