1338.066 九、發明說明 【發明所屬之技術領域】 本發明係有關於一種滾筒式洗衣機，其係具有呈横軸 狀的槽體，該槽體係由水槽、以及以可在該水槽內旋轉之 方式來配置的旋轉槽所構成，針對被收納在旋轉槽內的洗 滌衣物進行洗淨、清洗以及脫水的洗衣運轉。 【先前技術】 一直以來，這種滾筒式洗衣機係利用使上述旋轉槽高 速轉動，以對被收納在旋轉槽內的洗滌衣物進行脫水作業 。在脫水的時候，一旦因爲旋轉槽內之洗滌衣物的不平均 而產生偏荷重（意即不平衡狀態）時，就會發生水槽隨著 旋轉槽的旋轉而產生轉動、震動、噪音等問題。 因此，例如在日本的發明專利公報第3 865 79丨號（以 下簡稱專利文獻1 )中，就揭示了一種具備有：由檢測水 槽之振動的加速度感測器所構成的振動檢測裝置、以及根 據該振動檢測裝置的輸出來進行脫水旋轉控制的控制裝置 的滾筒式洗衣機。 (參照專利文獻1 )在該滾筒式洗衣機中，振動檢測 裝置係被配置在水槽的前部與後部2個位置，用以檢測出 同一方向的振動，在脫水時，只要利用控制裝置來執行脫 水旋轉控制，就可以控制振動。 【發明內容】 1338066 [發明所欲解決之課題] 但是，在上述專利文獻1的振動檢測裝置中，也有可 能不管利用何種方法都無法檢測出水槽之振動（方向）的 情況發生。也就是說，因爲水槽之上述偏荷重所產生的振 動，基本上，是以靜止狀態之水槽的中心軸線爲中心，爲 水槽全體的搖晃旋轉振動，但是實際上，因爲洗滌衣物也 會偏向旋轉槽的前後方向，所以可能發生旋轉槽的前方， 其搖晃旋轉大於後方，意即所謂的圓鉢狀搖晃旋轉運動， 而朝上下方向或左右方向（也就是放射方向）振動。如此 一來，因爲水槽的振動方向會受到偏荷重等而有所改變， 所以在檢測單方向之振動的上述振動檢測裝置中，就可能 發生無法檢測出振動的情形。 本發明爲鑑於上述情事者，其目的即爲提供一種可更 正確地檢測出水槽之振動，且爲廉價構成的滾筒式洗衣機 [用以解決課題之手段] 爲達成上述目的，本發明之滾筒式洗衣機，係具有呈 横軸狀的槽體，該槽體係由水槽、以及以可在該水槽內旋 轉之方式來配置的旋轉槽所構成，針對被收納在上述旋轉 槽內的洗滌衣物進行洗淨、清洗以及脫水的洗衣運轉，其 特徵爲：具備：加速度檢測手段，該加速度檢測手段係藉 由輸出一種對應於朝單方向之加速度的訊號，以檢測出發 生在上述水槽的振動；以及控制手段，該控制手段係根據 -6- 1338066 該加速度檢測手段的輸出，來控制上述洗衣運轉：上述加 速度檢測手段，係被裝設在水槽的前部及後部2個位置， 用以檢測出相互不同之方向的加速度。 〔發明效果〕 根據上述構成，因爲加速度檢測手段在水槽的前部以 及後部，可檢測出相互不同之方向的加速度，所以，可檢 測出對應於水槽全體搖晃旋轉時的振動、或上述圓鉢狀搖 晃旋轉運動等之不同振動方向的加速度，可更爲正確地來 進行檢測。此外，各個加速度檢測手段係把對應於朝向單 方向之加速度的訊號予以輸出，有關該輸出的處理也極爲 簡單即可完成，故可提供一種廉價的滾筒式洗衣機。 【實施方式】 <第1實施例> 以下，茲針對適用於滾筒式洗衣乾衣機的第1實施例 ，參照第1圖至第6圖來說明本發明。第1圖係爲滾筒式 洗衣乾衣機的縱剖側面圖。在形成該滾筒式洗衣乾衣機之 外筐的筐體1的內部，除了配設了水槽2以外，在水槽2 內又收納了旋轉槽（滾筒）3。水槽2以及旋轉槽3係呈 同心的圓筒狀，而構成了本發明的槽體。該槽體係以使其 中心軸線C指向筐體1之前後方向的橫軸狀，並且以面對 水平’以預定角度傾斜朝前上方的傾斜狀態來配置。 第2圖係滾筒式洗衣乾衣機的槪略縱剖前視圖。如該 1338.066 圖所示般，水槽2係藉由—對的防振阻尼4 ’ 4 ’而被彈性 地支撐於構成筐體1之底部的座板13上°防振阻尼4係 具備：在缸筒內配設有可自由滑動之活塞的摩擦阻尼機構 4a'以及被設置在與該阻尼機構4a同軸線上的彈簧構件 4b。這一對防振阻尼4 ’ 4，以正面來看’係呈下側展開成 「八」字狀般，對垂直方向呈預定角度（例如爲5度）之 傾斜，在水槽2下部的左右兩側’可控制水槽2的振動。 此外，又如第1圖所示般’水槽2在其上部’又藉由拉伸 彈簧5a以及5b，而被筐體1的頂板lb以及後板lc’輔 助性地彈性支撐著。 在水槽2的前端部，係裝設了在中央具有開口 6a之 環狀的水槽蓋6。針對於此’在筐體1的前面部’除了形 成了洗滌衣物取出裝入用的開口 7以外，還設有開閉該開 口 7的門9，在筐體1的開口 7以及水槽蓋6的開口 6a之 間，係藉由伸縮管8而連接在一起。 在水槽2之後端部的中心部份，係配設了：以可旋轉 之方式支撐著旋轉槽3的軸承裝置10、以及由無刷式DC 馬達所構成的洗衣機馬達Π。再者，於旋轉槽3係形成了 多數的小孔1 2，如後所述般，被供給至水槽2內的水或熱 風，係通過該小孔12而流入至旋轉槽3內。此外，複數 個擋板（無圖示）係以等間距方式形成於旋轉槽3的內周 面。 在筐體1內的上部，係配置了對於控制滾筒式洗衣乾 衣機不可或缺的控制單元1 3，在該控制單元1 3，又設有 -8- 1338066 後述的控制裝置1 4 (相當於控制手段’參照第5圖） 外，在筐體1內的上部’又設置了具有供水閥15以 水盒〗6的供水裝置1 7。供水裝置1 7雖無圖示，其係 來水之水龍頭相連接，藉著供水管而把水供給到水槽 。並且，在水槽2之後端側的底部係設有排水D 1 8。 電動式之排水閥1 9的排水管20係與該排水口 1 8相 只要打開排水閥1 9 ’水槽2內的水就會朝機外排出。 在上述水槽蓋6’除了設有與水槽2之內部空間 的熱風排氣部6b以外’在水橹2的背面部又形成了 入口 2a。在筐體1內設有熱風循環通路21，其一端 與熱風排氣部6b的下部相連，中間部的底部部份2 1 通過筐體1底部，另一端部係與熱風入口 2a相連。 風循環通路21係在中途2個位置設有伸縮管21b，2 使熱風循環通路2 1的底部部份2 1 a與水槽2之間的 傳播減少。在該熱風循環通路21，又設有用來使內部 朝向箭頭A方向流動的送風機22。 在筐體1的座板1 a除了配設有壓縮機23以外， 熱風循環通路1裝置了蒸發器24以及凝縮器25。這 縮機23、蒸發器24以及凝縮器25，係藉由無圖示的 循環管（pipe) ’各自循環連接在一起，而構成了熱 26。熱泵浦26係利用壓縮機23的作動，而使封入至 環的冷媒循環。 又，在上述水槽2，係配置了 2個用來檢測發生 之振動的加速度感測器（加速度檢測手段）2 7 a，2 7 b 。此 及供 與自 2內 具有 連， 相連 熱風 部係 a則 該熱 1 c * 振動 空氣 又在 些壓 冷媒 泵浦 該循 於此 。加 1338066 速度感測器27a，27b係各自將對應於朝向單方 度的訊號予以輸出，該加速度的檢測方向（檢測 照第3圖）必須簡單明瞭化，在第1圖至第3圖 該形狀予以誇張顯示。加速度感測器27a，27b 無圖示之配重的支撐部、以及利用電阻値變化來 支撐部之彎曲變形量的壓電阻抗，根據因爲檢測 之加速度相加所產生的電阻値變化，而檢測出該 速度的大小。這些加速度感測器27a，27b，係與 (例如爲增強電路或A/D轉換處理電路，無圖示 搭載於無圖示的印刷基板上。 這些印刷基板上的加速度感測器27a，27b， 2的外周部，以彼此之檢測方向成垂直的方式， 面向筐體1的角落部（在第2圖中爲筐體1上部 的位置。更詳細而言，加速度感測器2：7a，27b ^ 的外周部，於面對與上述中心軸線C呈垂直之水 呈預定角度0 (例如爲45度）上方的位置，以 軸線C方向來並列設置，且前方之加速度感測器 測軸X，係與中心軸線C之放射方向一致，而後 度感測器27b的檢測軸X，則是與水槽2之外周 向一致的狀態下，被安裝固定。 第5圖係爲槪略顯示洗衣乾衣機1之電性構 圖。控制裝置1 4係主要由微電腦所構成’以控 洗衣乾衣機1的所有動作。在控制裝置1 4，係連 將來自無圖示之操作面板之按鍵開關的各種操作 向之加速 軸 X，參 中，係將 係具備了 檢測出該 軸X方向 方向之加 處理電路 )各自被 係在水槽 被設置在 的右側） ^在水槽2 平線Η， 朝向中心 27a的檢 方的加速 的接線方 成的方塊 制滾筒式 接了用來 訊號予以 -10- 1338066 輸入的操作輸入部28，或者是用來檢測出洗衣機馬達n 之旋轉速度的旋轉速度檢測部29，並且還藉由上述處理電 路與加速度感測器27a，27b相連。控制裝置1 4係根據由 加速度感測器27a，27b所檢測出來的加速度、以及由旋 轉速度檢測部29所檢測出來的旋轉速度，計算出水槽2 的振幅量。此外，控制裝置14又根據被輸入的各種訊號 或事先記億的控制程式，藉由驅動電路3 0來控制洗衣機 馬達1 1、供水閥15、排水閥19、送風機22以及壓縮機 23。此時，洗衣機馬達1 1係利用換流器之脈衝幅調變（ PWM )方式，來控制旋轉速度。 接下來，針對如上所述之構成的本實施例的作用來加 以說明。 藉由操作上述操作面板的按鍵開關，一旦啓動標準的 運轉行程，就會針對被投入至旋轉槽3的洗滌衣物，開始 進行洗淨、清洗以及脫水的洗衣運轉、以及烘乾運轉。在 洗衣運轉的洗淨、清洗行程中，係在水槽2內儲有水的狀 態下，利用洗衣馬達1 1使旋轉槽3轉動。 在水槽2內的水排出後，就開始進行洗衣運轉的脫水 行程。在該脫水行程中，係利用洗衣馬達1 1使旋轉槽3 高速轉動，所以一旦因爲旋轉槽3內之洗滌衣物的偏倚而 產生偏荷重（也就是不平衡狀態）時，水槽2內的振動也 就會變大。該振動，基本上是以靜止狀態之槽體的中心軸 線C爲中心之水槽2全體的搖晃旋轉振動。此時，因爲水 槽2之上述接線方向的加速度變大，所以後側的加速度感 -11 - 1338066 測器27b的輸出，也會對應於此而產生變化。 另一方面，當洗滌衣物偏向旋轉槽3的前後方向，例 如：旋轉槽3之前方的搖晃旋轉度大於後方（產生所謂的 圓鉢狀搖晃旋轉運動），而朝向上述放射方向振動時，前 側的加速度感測器27a的輸出也會因應於此而產生變化。 此係與本實施例不同，就如第4圖（a )所示般，當加速 度感測器40在使檢測軸X與垂直方向Dv —致的狀態下 ，被設置於水槽2的上部時，則無法將水平方向Dh的振 動做爲加速度感測器40的加速度來加以檢測。此外，如 第4圖（b )所示般，即使將加速度感測器40設置在水槽 2的上述45度的位置，檢測軸X與垂直方向Dv —致的情 況下，仍無法檢測出水平方向Dh的振動。因此，在本實 施例中，如第4圖（c )所示，前側的加速度感測器2 7 b 係以檢測軸X與放射方向呈一致般，被設置在上述45度 的位置，所以可將水槽2的垂直方向Dv或水平方向Dh 的振動，做爲對應於朝向該放射方向（檢測軸X )之加速 度的訊號來輸出。此外，也可藉由後側的加速度感測器 27b’檢測出與該放射方向呈垂直之接線方向的加速度， 所以，兩加速度感測器27a’ 27b，對於檢測出水槽2整體 的加速度，可說是具有彼此互補的關係。 根據如上述般之加速度感測器27a，27b的輸出，控 制裝置1 4即執行如第6圖所示之流程圖的控制。 —旦進入洗衣運轉的脫水行程，控制裝置14就會起 動洗衣馬達1 1 ’使旋轉槽3開始轉動（步驟S丨），進行 -12- 1338066 平衡運轉（步驟S2 )。該平衡運轉係控制著洗衣馬達11 的旋轉速度，使洗滌衣物平均地貼附在旋轉槽3的內周， 例如：在洗滌衣物尙未貼附於旋轉槽3之內周的低速旋轉 領域（例如爲5 0 r p m〜7 0 r p m )時，使洗衣馬達1 1的旋轉 速度比其他領域更爲緩慢上昇。之後，控制裝置1 4係使 洗衣馬達11上昇至穩態旋轉速度（例如爲1 400rpm)( 步驟S3 )。 在該洗衣馬達11的旋轉速度上昇行程中，控制裝置 1 4係根據由加速度感測器27a，27b所測得之加速度、以 及由旋轉速度檢測部29所測得之旋轉速度（步驟S4 )， 計算出水槽2的振幅量（步驟S 5 )。該振幅量係爲朝向 水槽2之前部以及後部之上述放射方向以及接線方向的各 變位量（mm )。然後由控制裝置1 4來判斷出這些振幅量 是否大於事先設定好的設定値（步驟S6 )，當判定任一 方的振幅量大於設定値時，則重回步驟S2。也就是說， 當因爲洗滌衣物之偏倚而產生不平衡狀態，水槽2的振幅 量大於通常之振幅量（上述設定値）時，就讓洗衣馬達1 1 減速（或停止），再重新執行平衡運轉，藉由重新將洗滌 衣物打散來修正不平衡的狀態。 即使控制裝置1 4已針對上述不平衡狀態的修正，執 行了預定的次數（例如爲5次），而仍無法修正該不平衡 時（在步驟S 7中即爲「以上」），即被視爲錯誤處理， 例如在上述操作面板的顯示部顯示出錯誤的同時（步驟 S 8 )，又藉由使洗衣馬達1 1停止（步驟S 9 )，來終止脫 -13- 1338.066 水行程。此時，使用者可將洗滌衣物重新置入，藉由操作 上述操作面板，重新啓動脫水行程。 在步驟S6中，即使控制裝置14判定任一個的振幅量 小於設定値時，當洗衣馬達1 1未到達穩態旋轉速度（在 步驟S10中爲「未到達」），並且在起動洗衣馬達11後 ，未經過預先設定好的預定時間（在步驟S 1 1中爲「未經 過」）時，仍會重回步驟S4。而即使經過了該預定時間 (在步驟S1 1中爲「經過」），但洗衣馬達11仍未到達 穩態旋轉速度，只要發生和上述相同的錯誤處理（步驟 S 1 2 )，就會停止洗衣馬達Π (步驟S9 )，終止脫水作業 〇 另一方面，當控制裝置14在步驟S10中，根據旋轉 速度檢測部2 9的輸入，判斷洗衣馬達1 1已到達穩態的旋 轉速度時，就該穩態旋轉速度維持一段預定的時間（步驟 S 1 3 )，之後再使其停止（步驟S 9 )。如此就完成了脫水 行程。 在洗衣運轉的脫水完成後，啓動壓縮機2以及送風機 22，將熱風供給至水槽2內（以及旋轉槽3內），並且利 用洗衣馬達1 1使旋轉槽3旋轉，以進行烘乾運轉。有關 該烘乾運轉的詳細說明雖予以省略，但其係藉由熱泵浦單 元26的蒸發器24，將水槽2內的空氣予以冷卻除濕，並 利用凝縮器2 5來予以熱風化，所以可有效利用能源來進 行洗滌衣物的烘乾作業。 即使是在該烘乾運轉、或洗衣運轉的清洗以及洗淨行 -14- 1338066 程中，根據加速度感測器27a，27b的輸入’也可以控制 洗衣馬達1 1之旋轉速度的增減，以得到適當的烘乾效果 、或洗衣效果。 如上所述，本實施例之滾筒式洗衣乾衣機，因爲2個 加速度感測器27a，27b係被設置在水槽2的前部以及後 部，用以檢測出相互不同方向的加速度，所以可提昇加速 度檢測的準確度。此時，因爲加速度感測器27a以及27b ，係被配置成可將對應於朝向上述放射方向以及接線方向 之加速度的訊號予以輸出，所以可確實地檢測出水槽2前 部之放射方向的振動、以及水槽2全體的左右旋轉振動。 此外，水槽2的振動雖有像上述之圓鉢狀搖晃旋轉運動、 或是在水槽2之前部與後部，因爲加速度之方向不同所產 生的差異等各種情況，但因本構成是利用控制裝置1 4，根 據水槽2的旋轉速度來計算出其前部與後部的振幅量，所 以可正確地檢測出水槽2的振勖。 加速度感測器27a，27b，係與中心軸線C方向並列 被配置在水槽2的外周部，在面對筐體1之角落部的位置 (與水平線Η呈4 5度的位置）。如此一來，前側的加速 度感測器27a就可將水槽2的垂直方向Dv或水平方向Dh 的振動，做爲對應於朝向與水平線Η呈45度之放射方向 的加速度的訊號，予以輸出。此外，藉由後側的加速度感 測器27b可檢測出與上述放射方向呈直交之接線方向的加 速度，所以，兩加速度感測器27a，27b對於水槽2全體 之加速度的檢測，具有互補之關係，故可正確地檢測出水 -15- 1338066 槽2的各種振動。 在水槽2的外周部，面對筐體1之四個角的部位，因 爲水槽2與筐體1之間的空間較大，所以可有效利用該空 間，用來配置加速度感測器2 7 a，2 7 b。另一方面，在水槽 2之外周部的上部或左右的側部，因爲水槽2與筐體1之 間的空間較窄，一旦水槽2朝上下•左右方向振動的話， 就有接觸到筐體1的可能性。有關此點，如上所述般，因 爲可利用前側的加速度感測器27 a來正確檢測出水槽2之 垂直方向Dv或水平方向Dh的振動，所以可防止水槽2 因爲振動而碰觸到筐體1或產生噪音。 因爲防振阻尼4，4係在水槽2下部彈性支撐著左右 兩側’所以水槽2的防振阻尼4，4附近部的振幅量會變 小。本實施例中，加速度感測器27a，27b係以對防振阻 尼4而言，朝前後方向離開，且從正面看（參照第2圖） ，以略與水槽2外周部呈對向的方式來配置，所以可正確 地檢測出水槽2的振動。 各個加速度感測器27a，27b只是將對應於朝向單方 向之加速度的訊號予以输出，對於該輸出的放大或A/D轉 換等的處理也可極爲簡單地來完成，所以可提供一種廉價 的滾筒式洗衣乾衣機。 〈第2實施例〉 第7圖係本發明之第2實施例，僅針對不同於第1實 施例的部份來加以說明。而與第1實施例相同的部份則付 -16- 1338066 予相同的符號。 加速度感測器（加速度檢測手段）3 1 a，3 1 b，係具有 相互直交的3軸檢測軸X ' Y、Z，檢測軸X係與和水平線 Η呈4 5度的上述放射方向一致、檢測軸Y係與上述接線 方向一致，而檢測軸Ζ則是與水槽2之前後方向一致般地 被配置在水槽2。在本實施例中，僅將來自前側之加速度 感測器3 1 a之檢測軸X的輸出、以及後側之加速度感測 器31b之檢測軸Y的輸出，輸入至控制裝置14。也就是 說，雖然加速度感測器3 1 a，3 1 b係根據檢測軸X、Y、Z 方向之加速度相加所產生之電阻値的變化量，來檢測出各 個方向之加速度的大小，在但本實施例中，該輸出係與加 速度感測器27a，27b之輸出一致。 因此，根據上述構成的話，各個3軸的加速度感測器 3 1 a，3 1 b，只要處理對應於單方向之加速度的訊號即可， 所以處理電路的構成可極爲簡單。此外，還可獲得與第1 實施例相同的效果，就像可正確檢測出水槽2的振動等。 又，本發明不只限於上述以及圖面所示的實施例而已 ，也可以有如下的變化、或擴大。 本發明不只限於滾筒式洗衣乾衣機，也可適用於不具 有熱泵浦等之烘乾手段的滚筒式洗衣機。 再者，也可在水槽2的前部以及後部設置2軸的加速 度感測器’用以取代3軸的加速度感測器3 1 a，3 1 b。此時 ’ 2軸的加速度感測器係各自只用來處理相對於朝向單方 向之加速度的訊號，可得到同於第2實施例的效果。此外 -17- 1338066 ’本發明不只限於上述以及圖面所示的實施例而已，只要 在不脫離要旨的範圍內，皆可適度變更來加以實施。 【圖式簡單說明】 第1圖係顯示本發明之第1實施例的滾筒式洗衣乾衣 機的縱剖側面圖。 第2圖係滾筒式洗衣乾衣機的槪略縱剖前圖。 第3圖係同時顯示加速度感測器與水槽的槪略立體圖 〇 第4圖（a )〜（c )係同時顯示加速度感測器與水槽 的槪略前視圖，用來說明檢測加速度的方向。 第5圖係電性構成的方塊圖。 第6圖係用來說明脫水時之動作的流程圖。 第7圖爲相當於顯示本發明之第2實施例的第3圖。 【主要元件符號說明】 2 :水槽（槽體） 3 :旋轉槽（槽體） 2 7a，2 7b :加速度感測器（加速度檢測手段） 3 1 a，3 1 b :加速度感測器（加速度檢測手段） 42 :控制裝置（控制手段） -18-1338.066 IX. INSTRUCTIONS OF THE INVENTION [Technical Field] The present invention relates to a drum type washing machine having a trough body in a horizontal axis shape, the trough system being controlled by a water tank and rotating in the water tank The rotating groove is configured to wash, wash, and dehydrate the laundry that is stored in the rotating tub. [Prior Art] Conventionally, such a drum type washing machine performs a dehydrating operation on the laundry laundry accommodated in the rotary tub by rotating the rotary tub at a high speed. At the time of dehydration, when the partial load (i.e., the unbalanced state) occurs due to the unevenness of the laundry in the rotary tank, problems such as rotation, vibration, and noise of the water tank due to the rotation of the rotary tub occur. For example, in Japanese Patent Laid-Open Publication No. 3 865 79 (hereinafter referred to as Patent Document 1), a vibration detecting device including an acceleration sensor that detects vibration of a water tank is disclosed, and A drum type washing machine that controls the dehydration rotation control by the output of the vibration detecting device. (Patent Document 1) In the drum type washing machine, the vibration detecting device is disposed at two positions at the front and the rear of the water tank to detect vibration in the same direction, and when dehydrating, the dehydration is performed by the control device. With the rotation control, you can control the vibration. [Problem to be Solved by the Invention] However, in the vibration detecting device of Patent Document 1, there is a possibility that the vibration (direction) of the water tank cannot be detected regardless of the method used. In other words, the vibration generated by the above-described partial load of the water tank is basically the shaking vibration of the entire water tank centering on the central axis of the sink in a stationary state, but actually, the washing clothes are also biased toward the rotating groove. In the front-rear direction, the front side of the rotation groove may occur, and the wobble rotation is larger than the rear direction, that is, the so-called round-shaped wobble rotation motion, and vibrates in the up-down direction or the left-right direction (that is, the radiation direction). As a result, since the vibration direction of the water tank is changed by the bias load or the like, the vibration detecting device that detects the vibration in one direction may not be able to detect the vibration. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a drum type washing machine which can detect the vibration of a water tank more accurately and which is inexpensive, and which is a means for solving the problem. The washing machine has a groove body having a horizontal axis shape, and the groove system is formed of a water tank and a rotation groove that is rotatable in the water tank, and washes the laundry stored in the rotation groove. a washing operation for washing and dehydrating, characterized in that: an acceleration detecting means for detecting a vibration occurring in the water tank by outputting a signal corresponding to an acceleration in a single direction; and a control means The control means controls the washing operation according to the output of the acceleration detecting means -6- 1338066: the acceleration detecting means is installed at two positions at the front and the rear of the water tank to detect different from each other. The acceleration of the direction. [Effect of the Invention] According to the above configuration, since the acceleration detecting means can detect accelerations in mutually different directions in the front portion and the rear portion of the water tank, it is possible to detect the vibration in response to the wobble rotation of the entire water tank or the round shape. The acceleration in different vibration directions, such as shaking motion, can be detected more accurately. Further, each of the acceleration detecting means outputs a signal corresponding to the acceleration in a single direction, and the processing relating to the output is also extremely simple, so that an inexpensive drum type washing machine can be provided. [Embodiment] <First Embodiment> Hereinafter, the present invention will be described with reference to Figs. 1 to 6 for a first embodiment applied to a drum type washer-dryer. Fig. 1 is a longitudinal sectional side view of a drum type washer-dryer. In addition to the water tank 2, a rotating groove (roller) 3 is accommodated in the inside of the casing 1 which forms the outer basket of the drum-type washer-dryer. The water tank 2 and the rotary groove 3 are concentric cylindrical shapes, and constitute the tank body of the present invention. This groove system is disposed such that its central axis C is directed to the horizontal axis of the front and rear directions of the casing 1, and is inclined in a state in which the horizontal direction is inclined at a predetermined angle toward the front upper side. Figure 2 is a schematic longitudinal cross-sectional front view of the drum type washer-dryer. As shown in Fig. 1338.066, the water tank 2 is elastically supported by the pair of anti-vibration damping 4' 4 ' on the seat plate 13 constituting the bottom of the casing 1. The anti-vibration damping 4 is provided in the cylinder. A friction damper mechanism 4a' of a freely slidable piston and a spring member 4b disposed on a coaxial line with the damper mechanism 4a are disposed in the cylinder. The pair of anti-vibration dampers 4' 4, in front view, are formed in an "eight" shape on the lower side, and are inclined at a predetermined angle (for example, 5 degrees) in the vertical direction, and left and right in the lower portion of the water tank 2. The side 'controls the vibration of the sink 2 . Further, as shown in Fig. 1, the 'sink 2 is further elastically supported by the top plate 1b and the rear plate 1c' of the casing 1 by the tension springs 5a and 5b. At the front end portion of the water tank 2, a water tank cover 6 having an opening 6a in the center is attached. In addition to the opening 7 for taking out the laundry, the door 9 for opening and closing the opening 7 is provided in the front portion of the casing 1, and the opening 7 of the casing 1 and the opening of the sink cover 6 are provided. Between 6a, they are connected by a telescopic tube 8. At the center portion of the rear end portion of the water tank 2, a bearing device 10 that rotatably supports the rotary groove 3 and a washing machine motor that is constituted by a brushless DC motor are disposed. Further, a plurality of small holes 1 2 are formed in the rotary tub 3, and water or hot air supplied into the water tub 2 flows into the rotary tub 3 through the small holes 12 as will be described later. Further, a plurality of baffles (not shown) are formed on the inner circumferential surface of the rotary groove 3 at equal intervals. In the upper part of the casing 1, a control unit 13 which is indispensable for controlling the drum type washer-dryer is disposed, and in the control unit 13, there is further provided a control device 1 4 to be described later. In addition to the control means 'refer to Fig. 5', a water supply device 17 having a water supply valve 15 and a water tank 6 is provided in the upper portion of the casing 1. Although not shown, the water supply device 17 is connected to the faucet of the water supply, and the water is supplied to the water tank by the water supply pipe. Further, a drain D 1 8 is provided at the bottom of the rear end side of the water tank 2. The drain pipe 20 of the electric drain valve 19 is connected to the drain port 18 as long as the drain valve is opened. The water in the water tank 2 is discharged to the outside of the machine. In addition to the hot air exhaust portion 6b provided in the internal space of the water tank 2, the water tank cover 6' has an inlet 2a formed on the back surface portion of the water raft 2. The casing 1 is provided with a hot air circulation passage 21, one end of which is connected to the lower portion of the hot air exhaust portion 6b, the bottom portion 2 1 of the intermediate portion passes through the bottom of the casing 1, and the other end portion is connected to the hot air inlet 2a. The air circulation passage 21 is provided with telescopic tubes 21b at two positions in the middle, and 2 reduces the propagation between the bottom portion 2 1 a of the hot air circulation passage 2 1 and the water tank 2. In the hot air circulation passage 21, a blower 22 for flowing the inside toward the arrow A direction is further provided. In addition to the compressor 23, the hot plate circulation passage 1 is provided with the evaporator 24 and the condenser 25 in the seat plate 1a of the casing 1. The compressor 23, the evaporator 24, and the condenser 25 are cyclically connected by a pipe (not shown) to constitute heat 26. The heat pump 26 circulates the refrigerant enclosed in the ring by the operation of the compressor 23. Further, in the water tank 2, two acceleration sensors (acceleration detecting means) 2 7 a, 2 7 b for detecting the generated vibration are disposed. This is connected to the hot air system connected to the inside of the 2, then the heat 1 c * vibration air is pumped in some pressure refrigerant. Adding 1338066 speed sensors 27a, 27b each output a signal corresponding to the unilateral degree, and the detection direction of the acceleration (detection photograph 3) must be simple and clear, and the shape is given in FIGS. 1 to 3 Exaggerated display. The acceleration sensors 27a, 27b support portions of the weights (not shown) and the piezoelectric impedances of the bending deformation amount of the support portions by the resistance 値 change, and are detected based on the resistance 値 changes due to the detected acceleration additions. The size of the speed. The acceleration sensors 27a and 27b are (for example, an enhancement circuit or an A/D conversion processing circuit, and are not mounted on a printed circuit board (not shown). The acceleration sensors 27a and 27b on the printed circuit boards are The outer peripheral portion of the second portion faces the corner portion of the casing 1 so as to be perpendicular to the direction in which the directions are detected (in the second drawing, the position of the upper portion of the casing 1 is used. More specifically, the acceleration sensor 2: 7a, 27b The outer peripheral portion of the ^ is disposed at a position above the predetermined vertical angle 0 (for example, 45 degrees) perpendicular to the central axis C, and is juxtaposed in the direction of the axis C, and the acceleration sensor in the front is measured by the axis X, The radiation direction of the central axis C coincides with the detection axis X of the rear sensor 27b in a state in which it is aligned with the outer circumferential direction of the water tank 2. Fig. 5 is a schematic view showing the washing and drying machine The electrical composition of 1. The control device 14 is mainly composed of a microcomputer to control all the actions of the washer-dryer 1. In the control device 14, the various operations of the push button switch from the operation panel (not shown) are connected. Accelerate the axis X, participate in the A processing circuit is provided in which the processing circuit for detecting the direction of the X-axis of the axis is attached to the right side of the water tank.) The square drum is formed by the accelerated connection of the inspection unit toward the center 27a. The operation input unit 28 for inputting the signal -10- 1338066, or the rotation speed detecting portion 29 for detecting the rotational speed of the washing machine motor n, and the above-described processing circuit and acceleration sensor 27a are connected. , 27b connected. The control unit 14 calculates the amplitude of the water tank 2 based on the acceleration detected by the acceleration sensors 27a and 27b and the rotation speed detected by the rotation speed detecting unit 29. Further, the control unit 14 controls the washing machine motor 1 1 , the water supply valve 15, the drain valve 19, the blower 22, and the compressor 23 by the drive circuit 30 in accordance with various signals to be input or a control program of a predetermined amount. At this time, the washing machine motor 11 uses the pulse amplitude modulation (PWM) method of the inverter to control the rotation speed. Next, the action of the present embodiment configured as described above will be explained. By operating the push button switch of the operation panel described above, once the standard operation stroke is started, the laundry operation and the drying operation for washing, washing, and dehydrating are started for the laundry to be loaded into the rotary tub 3. In the washing and washing stroke of the washing operation, the rotating drum 3 is rotated by the washing motor 1 1 in a state where water is stored in the water tank 2. After the water in the water tank 2 is discharged, the dehydration stroke of the laundry operation is started. In the dehydration process, the rotary drum 3 is rotated at a high speed by the washing motor 1 1 , so that the vibration in the water tank 2 is generated when the partial load (i.e., the unbalanced state) occurs due to the bias of the laundry in the rotary tub 3 . It will get bigger. This vibration is basically a wobble rotational vibration of the entire water tank 2 centering on the central axis C of the trough body in a stationary state. At this time, since the acceleration of the above-described wiring direction of the water tank 2 becomes large, the output of the rear side acceleration -11 - 1338066 detector 27b also changes accordingly. On the other hand, when the laundry is biased in the front-rear direction of the rotary tub 3, for example, the wobble rotation degree in front of the rotary groove 3 is larger than the rear (a so-called round-shaped wobble rotation motion is generated), and the front side is vibrated toward the radial direction. The output of the acceleration sensor 27a also changes in response to this. This is different from the present embodiment in that, as shown in FIG. 4(a), when the acceleration sensor 40 is disposed in the upper portion of the water tank 2 in a state where the detection axis X is caused to be in the vertical direction Dv, Then, the vibration in the horizontal direction Dh cannot be detected as the acceleration of the acceleration sensor 40. Further, as shown in FIG. 4(b), even if the acceleration sensor 40 is disposed at the 45-degree position of the water tank 2, and the detection axis X is coincident with the vertical direction Dv, the horizontal direction cannot be detected. Dh vibration. Therefore, in the present embodiment, as shown in Fig. 4(c), the front side acceleration sensor 27b is disposed at the 45-degree position so that the detection axis X coincides with the radial direction. The vibration in the vertical direction Dv or the horizontal direction Dh of the water tank 2 is output as a signal corresponding to the acceleration in the radial direction (detection axis X). In addition, the acceleration of the wiring direction perpendicular to the radial direction can be detected by the acceleration sensor 27b' on the rear side. Therefore, the two acceleration sensors 27a' 27b can detect the acceleration of the entire water tank 2, Said to have a complementary relationship with each other. According to the output of the acceleration sensors 27a, 27b as described above, the control means 14 performs the control of the flowchart shown in Fig. 6. Upon entering the dehydration stroke of the laundry operation, the control unit 14 starts the washing motor 1 1 ' to start the rotation of the rotary tub 3 (step S丨), and performs a balancing operation of -12 - 1338066 (step S2). The balancing operation controls the rotational speed of the washing motor 11 so that the laundry is evenly attached to the inner circumference of the rotary tub 3, for example, in a low-speed rotating field in which the laundry is not attached to the inner circumference of the rotary tub 3 (for example, When it is 50 rpm to 70 rpm, the rotation speed of the washing motor 1 1 is made to rise more slowly than in other fields. Thereafter, the control device 14 raises the washing motor 11 to a steady state rotational speed (for example, 1 400 rpm) (step S3). In the rotation speed increasing stroke of the washing motor 11, the control device 14 is based on the acceleration measured by the acceleration sensors 27a, 27b and the rotation speed measured by the rotation speed detecting portion 29 (step S4). The amplitude amount of the water tank 2 is calculated (step S5). The amplitude amount is the amount of displacement (mm) toward the radial direction and the wiring direction of the front portion and the rear portion of the water tank 2. Then, the control device 14 determines whether or not the amplitude amount is larger than the previously set setting 値 (step S6), and when it is determined that the amplitude amount of either one is larger than the setting 値, the process returns to step S2. That is, when the unbalanced state occurs due to the bias of the laundry, and the amplitude of the water tank 2 is larger than the normal amplitude amount (the above setting 値), the washing motor 1 1 is decelerated (or stopped), and the balancing operation is re-executed. The state of the imbalance is corrected by re-dispensing the laundry. Even if the control device 14 has performed the correction for the above-described unbalanced state a predetermined number of times (for example, five times), and cannot correct the unbalance (in the step S7, it is "above"), that is, it is regarded as being For the error processing, for example, while the display portion of the operation panel described above displays an error (step S8), the water consumption of the de-13-1338.066 is terminated by stopping the washing motor 11 (step S9). At this time, the user can re-place the laundry, and restart the dehydration stroke by operating the above operation panel. In step S6, even if the control device 14 determines that the amplitude amount of any one is smaller than the set value, when the washing motor 11 does not reach the steady-state rotation speed ("not reached" in step S10), and after starting the washing motor 11, If the predetermined time set in advance ("not passed" in step S1 1) has elapsed, the process returns to step S4. And even if the predetermined time has elapsed ("elapse" in step S1 1), the washing motor 11 has not reached the steady-state rotation speed, and as long as the same error processing as described above occurs (step S1 2), the laundry is stopped. The motor Π (step S9) terminates the dehydration operation. On the other hand, when the control device 14 determines in step S10 that the washing motor 11 has reached the steady state rotational speed based on the input of the rotational speed detecting unit 29, The steady state rotational speed is maintained for a predetermined period of time (step S13), and then stopped (step S9). This completes the dehydration process. After the dehydration of the washing operation is completed, the compressor 2 and the blower 22 are started, hot air is supplied into the water tank 2 (and in the rotary tub 3), and the rotary drum 3 is rotated by the washing motor 11 to perform the drying operation. Although the detailed description of the drying operation is omitted, the air in the water tank 2 is cooled and dehumidified by the evaporator 24 of the heat pump unit 26, and is heat-weathered by the condenser 25, so that it can be heated. Efficient use of energy for drying laundry clothes. Even in the drying operation, or the washing operation of the washing operation and the washing line-14-1338066, the increase or decrease of the rotation speed of the washing motor 1 1 can be controlled according to the input of the acceleration sensors 27a, 27b. Get the proper drying effect or laundry effect. As described above, the drum-type washer-dryer of the present embodiment is provided because the two acceleration sensors 27a and 27b are disposed at the front and the rear of the water tank 2 to detect accelerations in mutually different directions. Accuracy of acceleration detection. At this time, since the acceleration sensors 27a and 27b are arranged to output signals corresponding to the accelerations in the radial direction and the wiring direction, it is possible to reliably detect the vibration in the radial direction of the front portion of the water tank 2, The left and right rotation vibration of the whole of the water tanks 2. In addition, although the vibration of the water tank 2 has various conditions such as the above-described circular swaying rotational motion or the difference between the front and the rear of the water tank 2 due to the difference in the direction of the acceleration, the present configuration is the use of the control device 1. 4. Since the amplitudes of the front portion and the rear portion are calculated from the rotation speed of the water tank 2, the vibration of the water tank 2 can be accurately detected. The acceleration sensors 27a and 27b are arranged in the outer peripheral portion of the water tank 2 in parallel with the direction of the central axis C, and are located at a position facing the corner portion of the casing 1 (at a position of 45 degrees from the horizontal line )). In this way, the front side acceleration sensor 27a can output the vibration of the vertical direction Dv or the horizontal direction Dh of the water tank 2 as a signal corresponding to the acceleration in the radial direction of 45 degrees from the horizontal line ,. Further, since the acceleration sensor 27b on the rear side can detect the acceleration in the wiring direction orthogonal to the above-described radiation direction, the two acceleration sensors 27a and 27b have a complementary relationship with respect to the detection of the acceleration of the entire water tank 2. Therefore, various vibrations of water -15-1338066 tank 2 can be correctly detected. In the outer peripheral portion of the water tank 2, facing the four corners of the casing 1, since the space between the water tank 2 and the casing 1 is large, the space can be effectively utilized for arranging the acceleration sensor 2 7 a , 2 7 b. On the other hand, in the upper portion or the left and right side portions of the outer peripheral portion of the water tank 2, since the space between the water tank 2 and the casing 1 is narrow, when the water tank 2 vibrates in the up and down and left and right directions, the casing 1 is contacted. The possibility. In this regard, as described above, since the vibration of the vertical direction Dv or the horizontal direction Dh of the water tank 2 can be accurately detected by the acceleration sensor 27a on the front side, the water tank 2 can be prevented from coming into contact with the housing due to vibration. 1 or produce noise. Since the anti-vibration damping 4, 4 elastically supports the left and right sides in the lower portion of the water tank 2, the amplitude of the vicinity of the anti-vibration damping 4, 4 of the water tank 2 becomes small. In the present embodiment, the acceleration sensors 27a and 27b are separated from the front and rear direction with respect to the vibration isolating damping 4, and are viewed from the front (see FIG. 2) so as to be slightly opposed to the outer peripheral portion of the water tank 2. Since it is configured, the vibration of the water tank 2 can be correctly detected. Each of the acceleration sensors 27a, 27b outputs only a signal corresponding to the acceleration in one direction, and the processing such as amplification or A/D conversion of the output can be extremely simply performed, so that an inexpensive roller can be provided. Washing and drying machine. <Second Embodiment> Fig. 7 is a second embodiment of the present invention, and only a part different from the first embodiment will be described. The same parts as in the first embodiment are assigned the same symbols as -16- 1338066. The acceleration sensor (acceleration detecting means) 3 1 a, 3 1 b has a three-axis detecting axis X ' Y, Z which are orthogonal to each other, and the detecting axis X is in the same radial direction as the horizontal line Η at 45 degrees. The detection axis Y is aligned with the above-described wiring direction, and the detection axis is disposed in the water tank 2 in conformity with the front and rear directions of the water tank 2. In the present embodiment, only the output of the detection axis X from the front side acceleration sensor 3 1 a and the output of the detection axis Y of the rear side acceleration sensor 31b are input to the control device 14. That is, although the acceleration sensor 3 1 a, 3 1 b detects the magnitude of the acceleration in each direction based on the amount of change in the resistance 产生 generated by the acceleration addition in the X, Y, and Z directions of the detection axis, However, in this embodiment, the output is consistent with the output of the acceleration sensors 27a, 27b. Therefore, according to the above configuration, each of the three-axis acceleration sensors 3 1 a, 3 1 b can process the signal corresponding to the acceleration in one direction, so that the configuration of the processing circuit can be extremely simple. Further, the same effects as in the first embodiment can be obtained as if the vibration of the water tank 2 or the like can be correctly detected. Further, the present invention is not limited to the above-described embodiments and the embodiments shown in the drawings, and may be modified or expanded as follows. The present invention is not limited to the drum type washer-dryer, but can also be applied to a drum type washing machine which does not have a drying means such as a heat pump. Further, a 2-axis acceleration sensor ' may be provided at the front and the rear of the water tank 2 in place of the 3-axis acceleration sensors 3 1 a, 3 1 b. At this time, the two-axis acceleration sensor is only used to process the signal with respect to the acceleration toward the one direction, and the effect similar to that of the second embodiment can be obtained. Further, the present invention is not limited to the above-described embodiments shown in the drawings, and may be modified as appropriate without departing from the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional side view showing a drum-type washer-dryer according to a first embodiment of the present invention. Fig. 2 is a schematic longitudinal sectional front view of the drum type washer-dryer. Figure 3 is a schematic perspective view showing the acceleration sensor and the water tank at the same time. Figure 4 (a) ~ (c) shows a schematic front view of the acceleration sensor and the water tank to illustrate the direction of acceleration detection. Figure 5 is a block diagram of electrical construction. Fig. 6 is a flow chart for explaining the action at the time of dehydration. Fig. 7 is a third view corresponding to the second embodiment of the present invention. [Main component symbol description] 2 : Sink (slot) 3 : Rotating groove (slot) 2 7a, 2 7b : Acceleration sensor (acceleration detection means) 3 1 a, 3 1 b : Acceleration sensor (acceleration) Detection means) 42 : Control device (control means) -18-