200918840 九、發明說明 【發明所屬之技術領域】 本發明係關於將包含液體之被處理物予以乾燥之乾燥 裝置。 【先前技術】 在乾燥包含液體之被處理物時，於藉由乾燥爐或熱風 乾燥裝置之乾燥中，會將高溫的排氣氣體排出大氣，產生 無謂之能量消耗、大氣污染或地球暖化等問題。另外，在 藉由減壓乾燥裝置之乾燥中，會有初期成本高，操作性不 好或均等之傳熱困難等問題。 因此，以往藉由分割爲：在減壓下乾燥（參照專利文 獻η ，藉由壓縮冷凍循環之蒸發器來將水分予以冷凝， 藉由冷凝器將水分壓縮後之低濕度空氣再度加溫（參照專 利文獻2)，使冷凝器將熱能排出系統外之調整用冷凝器 ;及使被乾燥處理物中的水分蒸發，產生濕空氣之加溫用 冷凝器，控制容易、效率提升（參照專利文獻3)之方法 有被嘗試過。 專利文獻1 :日本專利特開平1 1 - 6 3 8 1 8號公報 專利文獻2 :日本專利特開平1 1 - 1 9 7 3 9 5號公報 專利文獻3:日本專利特開2004-301496號公報 【發明內容】 發明所欲解決之課題 -4- 200918840 但是’於前述方法中，任何一種之方法雖都可以乾燥 ’卻有傳熱效率差，將熱能無謂地排出系統外之問題。 因此’在本發明中，目的在於提供··抑制對系統外散 熱’且防止臭氣產生之乾燥裝置。 用以解決課題之手段 本發明之乾燥裝置，係由：被處理物之乾燥室；及使 此乾燥室內的環境氣體循環之氣體循環路徑；及包含以冷 媒循環路徑所連接的蒸發器及冷凝器之冷凍機所構成，前 述蒸發器及冷凝器，係被配置於藉由乾燥室及氣體循環路 徑所構成的封閉式迴路內。 如依據此乾燥裝置，於藉由氣體循環路徑使乾燥室內 的環境氣體循環時，藉由蒸發器以冷媒的氣化熱能使環境 氣體（.濕空氣）冷卻並冷凝（結露），將濕空氣中的水分 分離並除去，並且藉由冷凝器以冷媒的冷凝熱能，將此水 分被除去之氣體予以加熱。然後，藉由此已被加熱之低濕 度的氣體，在乾燥室內從被處理物奪取水分，來將被處理 物乾燥。此處，於本發明之乾燥裝置中，蒸發器及冷凝器 係被配置於藉由乾燥室及氣體循環路徑所構成的封閉式迴 路內，可以抑制冷媒之氣化熱能及冷凝熱能之雙方對系統 外散熱，可以有效地加以利用，並且，乾燥室內的環境氣 體滯留在封閉式迴路內，不被排出系統外，可以防止臭氣 產生。 此處，氣體循環路徑，係藉由作成使乾燥室內的環境 -5- 200918840 氣體依序通過蒸發器、冷凝器後，返回到前述乾燥室內之 構成，藉由蒸發器以冷媒的氣化熱能將環境氣體冷卻冷凝 ，將濕空氣中的水分予以分離除去後，藉由冷凝器以冷媒 的冷凝熱能，將此水分被除去之氣體予以加熱，將氣體的 溫度予以昇溫，能使在接近原來溫度之狀態下返回到乾燥 室內，可以進行藉由常溫之被處理物的乾燥。 另外，乾燥室係以具備：於乾燥室內搬運前述被處理 物之搬運裝置；及使已通過冷凝器之氣體衝擊於藉由此搬 運裝置所搬運的被處理物上之複數個噴嘴者爲佳。藉此， 可以在乾燥室內有效率地使藉由冷凝器所昇溫的低濕度氣 體衝擊於被處理物，得以進行高效率之傳熱及水分之分離 〇 另外，於封閉式迴路上以具備：抽吸乾燥室內的環境 氣體並予以壓縮，且用於使之於封閉式迴路內循環之壓縮 機爲佳。藉此，乾燥室內成爲負壓狀態，可以防止從乾燥 室對系統外之臭氣的洩漏，並且可以助長從被處理物之水 分的蒸發。另外，藉由被壓縮至比大氣壓更低的壓力，可 以助長環境氣體之溫度上昇與環境氣體所含之水分的液化 〇 或者於封閉式迴路上以具備：抽吸乾燥室內的環境氣 體，且用於使之於封閉式迴路內循環之送風機爲佳。藉此 ，可以使乾燥室內的環境氣體在氣體循環路徑內強制地循 T°°- 另外’本發明之乾燥裝置，以具備：吸收於乾燥室內 -6- 200918840 的環境氣體所含之水分的吸濕劑者爲佳。藉由倂用吸濕劑 來吸收除去乾燥室內的環境氣體所含之水分’環境氣體的 含水量被降低，並且藉由此吸濕劑’水分被冷凝時所產生 之冷凝熱能，環境氣體被加熱’藉由在乾燥室內被處理物 之水分氣化時所被吸收之氣化熱能’可以防止溫度降低。 另外，在本發明之乾燥裝置中，冷凝器係以其一部分 被配置於乾燥室內者爲佳。藉此’在藉由水分被除去之低 濕度的氣體來將乾燥室內的被處理物予以乾燥之外’藉由 以冷凝器的冷凝熱能來加熱被處理物本身’可以促進被處 理物之乾燥。 另外，本發明之乾燥裝置，在冷凍機爲複數個之情形 時，以已變更各冷凍機的冷媒之種類者爲佳。藉此，藉由 複數段的蒸發器來依序冷卻環境氣體，並且藉由複數段的 冷凝器來依序家溫環境氣體時，因應冷卻順序及加溫順序 來選擇個別之冷卻機的冷媒，可以更有效率地將環境氣體 予以冷卻及加溫。 發明效果 (1 )如依據由：被處理物之乾燥室；及使此乾燥室 內的環境氣體循環之氣體循環路徑；及包含以冷媒循環路 徑所連接的蒸發器及冷凝器之冷凍機所構成，蒸發器及冷 凝器’係被配置於藉由乾燥室及氣體循環路徑所構成的封 閉式迴路內之乾燥裝置，藉由抑制對系統外散熱，且有效 地利用熱能’得以格外地提升乾燥效率。另外，乾燥室內 -7- 200918840 的環境氣體滯留在封閉式迴路內，不被排出系統外，可以 防止臭氣之產生。 (2) 氣體循環路徑，係藉由使乾燥室內的環境氣體 依序通過蒸發器、冷凝器後，返回到前述乾燥室內之構成 ，可以來將環境氣體冷卻並除去水分後，將此水分被除去 之氣體予以加熱，使氣體的溫度昇溫，當成接近原來的溫 度之狀態返回到乾燥室內，得以進行藉由常溫之被處理物 的乾燥。 (3) 藉由乾燥室爲具備：於前述乾燥室內搬運前述 被處理物之搬運裝置；及使已通過前述冷凝器之氣體衝擊 於藉由此搬運裝置所搬運的被處理物上之複數個噴嘴者， 可以使藉由冷凝器而被昇溫之低濕度的氣體在乾燥室內有 效率地衝擊於被處理物，得以進行高效率之傳熱及水分的 分離。 (4) 藉由於封閉式迴路上具備：抽吸乾燥室內的環 境氣體並予以壓縮，且用於使之於封閉式迴路內循環之壓 縮機，乾燥室內成爲負壓狀態，可以防止從乾燥室對系統 外之臭氣的洩漏’並且，助長基於減壓之沸點下降，從被 處理物之水分的蒸發’能夠縮短固液分離所花的時間。另 外，藉由被壓縮至比大氣壓更低的壓力爲止，助長環境氣 體之溫度上昇與環境氣體所含之水分的液化，得以獲得高 省能源效果。 (5) 藉由於封閉式迴路上具備：抽吸乾燥室內的環 境氣體’且用於使之於封閉式迴路內循環之送風機，能使 -8 - 200918840 乾燥室內的環境氣體在氣體循環路徑內強制地循環’且進 行環境氣體之水分的除去及昇溫’得以進行被處理物之乾 燥。 (6) 藉由具備吸收乾燥室內之環境氣體所含之水分 的吸濕劑，倂用吸濕劑來吸收除去乾燥室內的環境氣體所 含之水分，可以降低環境氣體的含水量，能夠謀求固液分 離的高效率化。另外，環境氣體藉由水分藉由吸濕劑而被 冷凝時所產生之冷凝熱能而被加熱，藉由在乾燥室內被處 理物之水分氣化時所吸收的氣化熱能，得以防止溫度降低 ，也可以有效地利用此吸濕劑的冷凝熱能。 (7) 在冷凍機爲複數台之情形時，藉由變更各冷凍 機之冷媒的種類，可以更有效率地冷卻及加溫環境氣體， 可以將乾燥室內的溫度設定在從冰點以下至1 0 0 °c以上之 寬廣的範圍。 【實施方式】 第1圖係本發明之實施形態中之乾燥裝置整體的模型 圖。 第1圖中，本發明之實施形態中之乾燥裝置1，主要 係由：乾燥室2 ;及冷卻室3 ;及加溫室4 ;及第1冷凍機 5;及第2冷凍機6;及第3冷凍機7所構成。第1〜第3 冷凍機5、6、7係個別由：藉由冷媒循環路徑5a、6a、7a 而被連接之蒸發器51?、615、713、壓縮機5(：、6(：、7(^、冷 凝器5d、6d、7d、泵浦5e、6e、7e及膨脹閥（未圖示出 -9- 200918840 )所構成之周知的壓縮式冷凍機（熱泵）。 乾燥室2係具備：用以投入乾燥對象物（被處理物 W之對象物投入口 20 ;及將從對象物投入口 2〇所投入 對象物W予以攪拌之對象物攪拌機21;及在乾燥室2 搬運對象物W之皮帶式輸送機等之對象物搬運裝置22 及對藉由對象物搬運裝置22所搬運之對象物w上吹以 加溫室4所送出之低濕度之溫風之乾空氣吹出口 23;及 以排出對象物W之對象物排出閥24。 對象物攪拌機2 1係用以一面將從對象物投入口 2〇 投入的對象物W予以攪拌一面倒入乾燥室2內者。對 物搬運裝置22係將此一面攪拌一面被導入之對象物w 上對象物排出閥24予以搬運者。另外，對象物搬運裝 22係於上下方向設置爲複數段，以一面將對象物w於 平方向予以搬運，一面依序投下至下段的對象物搬運裝 22上’直到到達對象物排出閥24爲止，水分從對象物 被除去之方式來搬運長的距離。 乾空氣吹出口 2 3係複數排列設置於將從加溫室4 乾空氣送風口 4a所送出的低濕度之溫風導入乾燥室2 的各對象物搬運裝置22上之風箱（集管）25。乾空氣 出口 23係藉由圓孔噴嘴或縫隙噴嘴等之噴嘴來構成， 使從加溫室4所供給的低濕度的溫風可以有效率地衝擊 藉由對象物搬運裝置22所搬運之對象物W上。 另外，吸收乾燥室2內之環境氣體所含之水分的吸 劑26及抽吸乾燥室2內的環境氣體，且用以使吸濕劑 ) 之 內 1 從 用 所 象 朝 置 水 置 W 之 內 吹 以 於 濕 -10- 26 200918840 通過之送風機27被設置於本實施形態中之乾燥室2的下 部，吸濕後之環境氣體係通過配管28而被排於乾燥室2 的上部。另外，於吸濕劑2 6的下方設置有：儲存藉由吸 濕劑26所收集之水的承盤29 ;及將積存在承盤29的水予 以排出之閥門3 0。 於冷卻室3內藏有：第1冷凍機5、第2冷凍機6及 第3冷凍機7之個別的蒸發器5b、6b、7b。另一方面，第 1冷凍機5、第2冷凍機6及第3冷凍機7之個別的冷凝 器5d、6d、7d係被內藏於加溫室4。另外，乾燥室2與冷 卻室3及加溫室4，係相互藉由連接管8 a、8 b、8 c而連接 來構成被封閉的封閉式迴路。連接管8 a、冷卻室3、連接 管8b、加溫室4及連接管8c，係構成使乾燥室2內的環 境氣體循環之氣體循環路徑。 於連接管8a設置有抽吸乾燥室2內的環境氣體並予 以壓縮’且用於使之藉由前述氣體循環路徑內循環之壓縮 機9。另外’於冷卻室3設置有用以將在冷卻室3內所冷 凝的水排出系統外之排水閥1 0。作爲排水閥1 〇可以使用 浮動式蒸汽捕捉器等。另外，在圖示例子中，雖也於連接 管8b設置有閥門1 1，但是此閥門丨1也可以省略。 接著’說明前述構成之乾燥裝置1的動作。另外，在 本實施形態中之乾燥裝置1中所乾燥的對象物W，係以含 水性有機物爲代表之茶葉渣。茶葉渣（對象物W )係從對 象物投入口 20被投入，藉由對象物攪拌機21 一面被攪拌 一面被導入乾燥室2內。此茶葉渣從最上段的對象物搬運 -11 - 200918840 裝置22被搬運至最下段的對象物搬運裝置22爲止時，藉 由從乾空氣吹出口 23所吹出的低濕度之溫風而被乾燥。 此處，乾燥室2內的環境氣體係藉由壓縮機9而被抽 吸，通過連接管8a而被送至冷卻室3內。從此乾燥室2 而被送至之環境氣體（濕空氣）係藉由依序通過冷卻室3 內的蒸發器5b、6b、7b而被冷卻。因此，濕空氣內的水 分藉由因此溫度降低所導致之飽和水蒸氣量的降低而冷凝 ，從排水閥1 〇而被排出系統外。藉此，濕空氣溫度下降 而成爲乾空氣。另外，在蒸發器5b、6b、7b內，液化冷 媒從環境氣體奪取熱量而氣化，此氣化冷媒分別藉由壓縮 機5c、6c、7c而被壓縮，並被送至冷凝器5d、6d、7d。 而且，此乾空氣係通過連接管8b而被送至加溫室4 內。從此冷卻室3所被送至的乾空氣，係藉由依序通過加 溫室4內的冷凝器7d、6d、5d而被加溫，並通過連接管 8c而返回到乾燥室2內，從乾空氣吹出口 23吹向對象物 搬運裝置22上的茶葉渣。另外，在冷凝器5d、6d、7d內 ，氣化冷媒藉由對乾空氣給予熱量而液化，此液化冷媒分 別藉由泵浦5e、6e、7e而介由膨脹閥被送至蒸發器5b、 6b、7 b 〇 如前述般，於本實施形態中之乾燥裝置1中，藉由冷 卻室3內的複數個蒸發器5b、6b、7b ’以冷媒之氣化熱能 來冷卻環境氣體（濕空氣）並使其冷凝（結露），來分離 除去濕空氣中的水分，並且，藉由加溫室4內的複數個冷 凝器5d、6d、7d，以冷媒的冷凝熱能將此水分被除去的環 -12- 200918840 境氣體予以加熱’藉由此被加熱的環境氣體在乾燥室2內 乾燥作爲對象物W之茶葉渣。 此處，在本實施形態中之乾燥裝置1中，乾燥室2與 蒸發器5b、6b、7b及冷凝器5d、6d、7d係被配置於封閉 的封閉式迴路內’可以抑制冷媒的氣化熱能及冷凝熱能之 雙方對系統外之散熱而有效地利用。藉此，乾燥效率格外 提升。另外’在此乾燥裝置1中’於將藉由壓縮機9而被 加壓的狀態之濕空氣取入冷卻室3內之過程中，濕空氣被 昇溫’蒸發水分被冷凝，助長從對象物W之水分的蒸發 ，可以獲得高省能源效果。 另外，在本實施形態中之乾燥裝置1中，從乾空氣吹 出口 2 3所吹出之乾空氣，係爲相對濕度1 0 %以下的低濕 度之氣體，對於對象物W，係以5 m每秒至音速域之風速 來吹出，使分離爲對象物W與濕空氣及細微水滴。藉此 ，對象物W的乾燥效率格外提升。另外，此氣體係再接 近進入連接管8a前之原來的環境氣體之溫度的狀態下返 回到乾燥室2內，對象物W的乾燥係藉由常溫來進行。 此種乾燥裝置1如與以往的乾燥系統比較，能源效率 爲數倍至數十倍（運轉成本爲數分之1至數十分之1)。 另外，從含有水分之對象物W只分離水並予以廢棄，對 象物W本身之溫度不需要提升至必要溫度以上。即此乾 燥裝置1幾乎不消耗能量，係與以往的乾燥裝置有區隔之 乾燥裝置。 另外，乾燥室2內的環境氣體係積存於封閉迴路內’ -13- 200918840 不被排出系統外，可以防止臭氣之發生。即在此乾燥裝置 1中，藉由全部在被封閉的封閉式迴路內處理，從含有水 分之對象物w分離水分，臭氣、熱能堆不排出系統外。 特別是在此乾燥裝置1中，藉由於封閉式迴路上具備抽取 乾燥室2內的環境氣體並予以壓縮，且用以使之於封閉式 迴路內循環之壓縮機9，乾燥室2內成爲負壓狀態，於從 對象物投入口 20投入對象物W時，也可以防止臭氣對系 統外之洩漏。 另外，在乾燥室2內，基於藉由壓縮機9之減壓，沸 點下降，比起如以往般，單單利用冷媒循環之固液分離裝 置，可以縮短固液分離所花之時間。另外，在此乾燥裝置 1中，倂用吸濕劑26，且藉由此吸濕劑26將乾燥室2內 之環境氣體所含之水分吸收、除去，來降低環境氣體之含 水量’可以進一步提升乾燥效率。另外，環境氣體係藉由 此吸濕劑26水分被冷凝時所產生的冷凝熱能而被加熱， 藉由在乾燥室2內對象物W之水分氣化時所吸收的氣化 熱能，可以防止溫度降低。即在此乾燥裝置1中，可以更 有效地利用冷凝熱能，可以將從外部之能量的取入限制在 最小限度。 另外’在本實施形態中之乾燥裝置1中，記皮將設置 於冷卻室3內之蒸發器5b、6b、7b的台數設爲可以變更 ’在對象物W爲少量之情形時，或低含水量之對象物之 情形時’可以排除多餘之冷媒的熱循環。或者即使是在少 量或低含水量之對象物時，藉由增加蒸發器5b、6b、7b -14- 200918840 的台數，可以更高速地分離固液。 另外，在前述乾燥裝置1中，作爲第1〜第3冷凍機 5、6、7’雖採用壓縮式冷凍機，但是也可以使用吸收式 冷凍機。第2圖係代替第1圖的壓縮式冷凍機而使用吸收 式冷凍機50、60、70之乾燥裝置la整體的模型圖。如第 2圖所示般’在吸收式冷凍機50、60、70之情形時，代替 第1圖之壓縮機5c、6c、7c，而只使用再生器50c、60c 、7c，基本上爲相同構成。在將乾燥裝置ia倂設於燃燒 爐或熱分解裝置等之熱能設備的情形時，如此藉由使用吸 收式冷凍機50、60、70，可以將從該熱能設備之排出熱能 當成再生器50c、60c、70c之熱源來利用。 另外，作爲本發明之實施形態，如第3圖所示般，也 可以將冷凝器5d、6d、7d之個別的一部分當成輔助冷凝 器50d、60d、70d而配置於乾燥室2內之乾燥裝置α。如 依據此種乾燥裝置lb，在藉由如前述般水分被除去之低濕 度的氣體來乾燥乾燥室2內之對象物W之外，藉由以輔 助冷凝器50d、60d、7〇d的冷凝熱能來加熱對象物w本 身，可以促進對象物W的乾燥。 另外’作爲本發明之實施形態，也可以如第4圖所1示 般，代替壓縮機9而作成具備有抽吸乾燥室2內的環境氣ι 體，並用以使之在封閉式迴路內循環之送風機31的乾燥 裝置lc。如依據此種乾燥裝置lc，可以在氣體循環路徑 內使乾燥室2內的環境氣體強制地循環來使其乾燥。 ，在第4圖中，送風機31雖設置於連接管8a，但是也可 -15- 200918840 以設置於連接管8b、8c。 另外，作爲本發明之實施形態，也可以如第5圖所示 般，使冷卻室3及加溫室4成爲一體而作爲除濕室32之 乾燥裝置Id。在此情形時，藉由連接管8a而被抽吸至除 濕室32內的環境氣體，係藉由使從下方依序通過下段的 蒸發器5b、6b、7b而被冷卻，並於除濕後，藉由使從上 方依序通過上段的冷凝器7d、6d、5d而被加溫，且通過 連接管8c而返回到乾燥室2內。即使是此種構成，也與 前述相同，可以進行對象物W之乾燥。 產業上之利用可能性 本發明之乾燥裝置，係於系統內之傳熱機構也可以有 效地利用輻射、對流及接觸傳熱之各種傳熱，也可以有效 地利用減壓及加壓之特性的嶄新之乾燥裝置，可以期待高 省能源效果，爲有用之具有經濟性之乾燥裝置。另外，即 使是伴隨有臭氣之被處理物，由於不會將臭氣排出系統外 ，爲有用之具有高環境性能的乾燥裝置。特別是，在基於 表面硬化、燒焦之發生或變質等之理由，在高速乾燥之系 統中無法使用之有機物等之乾燥，於在常溫（0〜5 0°C ) 也可以作用之本發明的乾燥裝置中，可以只除去水分。例 如，可以乾燥無蛋白質之變性、肉、蔬菜或水果，也可以 進行衣服之乾燥等。 【圖式簡單說明】 -16- 200918840 第1圖係本發明之實施形態中之乾燥裝置整體的模型 圖。 第2圖係代替第〗圖的壓縮式冷凍機而使用吸收式冷 凍機之乾燥裝置整體的模型圖。 第3圖係表示乾燥裝置之別的實施形態的模型圖。 第4圖係表示乾燥裝置之別的實施形態的模型圖。 第5圖係表示乾燥裝置之別的實施形態的模型圖。 【主要元件符號說明】 1、 la、 lb、 lc、 Id:乾燥裝置 2 :乾燥室 3 :冷卻室 4 :加溫室 4a :乾空氣送風口 5、6、7 :冷凍機 50 ' 60、70 :吸收式冷凍機 5a、6a、7a :冷媒循環路徑 5b、6b、7b :蒸發器 5c 、 6c 、 7c :壓縮機 5d、6d、7d:冷凝器 5e、 6e、 7e:栗浦 8a、8b、8c:連接管 9 :壓縮機 1 〇 :排水閥 -17- 200918840 11 :閥門 2 0 :對象物投入口 2 1 :對象物攪拌機 22 :對象物搬運裝置 2 3 :乾空氣吹出口 24 :對象物排出閥 2 5 :視窗盒 2 6 :吸濕劑 27 :送風機 2 8 :配管 2 9 :承盤 3 0 :閥門 3 1 :送風機 3 2 :乾燥室 50d、60d、70d:輔助冷凝器 -18-200918840 IX. Description of the Invention [Technical Field of the Invention] The present invention relates to a drying apparatus for drying a processed object containing a liquid. [Prior Art] When drying a liquid-containing material, in the drying by a drying oven or a hot air drying device, high-temperature exhaust gas is exhausted to the atmosphere, resulting in unnecessary energy consumption, air pollution, or global warming. problem. Further, in the drying by the vacuum drying apparatus, there are problems such as high initial cost, poor workability, and uniform heat transfer. Therefore, conventionally, it is divided into: drying under reduced pressure (refer to Patent Document η, the water is condensed by compressing the evaporator of the refrigeration cycle, and the low-humidity air compressed by the condenser is heated again (refer to Patent Document 2), a condenser for adjusting the heat to be discharged from the outside of the system, and a condenser for heating the moisture in the dried material to generate humid air, which is easy to control and improve in efficiency (refer to Patent Document 3) The method of the method has been tried. Patent Document 1: Japanese Patent Laid-Open No. Hei 1 1 - 6 3 8 1 8 Patent Document 2: Japanese Patent Laid-Open No. 1 1 - 1 9 7 3 9 5 Patent Document 3: Japan JP-A-2004-301496 SUMMARY OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION - 200918840 However, in the above method, any of the methods can be dried, but the heat transfer efficiency is poor, and the heat energy is discharged unnecessarily. Therefore, in the present invention, the object of the present invention is to provide a drying device that suppresses heat generation outside the system and prevents generation of odor. The device is composed of: a drying chamber for the object to be treated; a gas circulation path for circulating the ambient gas in the drying chamber; and a refrigerator including the evaporator and the condenser connected by the refrigerant circulation path, the evaporator and the evaporator The condenser is disposed in a closed circuit formed by a drying chamber and a gas circulation path. According to the drying device, when the ambient gas in the drying chamber is circulated by the gas circulation path, the refrigerant is cooled by the evaporator. The heat of vaporization cools and condenses (condenses) the ambient gas (.moist air), separates and removes moisture in the humid air, and heats the gas from which the moisture is removed by the condensation heat of the refrigerant by the condenser. Then, the object to be treated is dried by taking the moisture from the object to be treated in the drying chamber by the gas having a low humidity which is heated. Here, in the drying device of the present invention, the evaporator and the condenser are arranged. In the closed circuit formed by the drying chamber and the gas circulation path, it is possible to suppress both the vaporization heat energy and the condensation heat energy of the refrigerant outside the system. The heat can be effectively utilized, and the ambient gas in the drying chamber is retained in the closed circuit, and is not discharged out of the system, thereby preventing odor generation. Here, the gas circulation path is created to make the environment in the drying chamber -5- 200918840 After the gas passes through the evaporator and the condenser in sequence, it returns to the drying chamber, and the ambient gas is cooled and condensed by the vaporization heat of the refrigerant by the evaporator, and the moisture in the humid air is separated and removed. The condenser removes the gas from which the moisture is removed by the heat of condensation of the refrigerant, and raises the temperature of the gas to return to the drying chamber at a temperature close to the original temperature, thereby allowing the object to be treated at a normal temperature. Further, the drying chamber includes a conveying device that conveys the workpiece in the drying chamber, and a plurality of nozzles that impact the gas that has passed through the condenser on the workpiece to be conveyed by the conveying device It is better. Thereby, the low-humidity gas heated by the condenser can be efficiently impacted on the workpiece in the drying chamber, thereby achieving high-efficiency heat transfer and separation of moisture, and the closed circuit can be provided with: The ambient gas in the drying chamber is sucked and compressed, and the compressor for circulating in the closed circuit is preferred. Thereby, the drying chamber is in a negative pressure state, and leakage from the drying chamber to the odor outside the system can be prevented, and evaporation of water from the workpiece can be promoted. In addition, by being compressed to a pressure lower than atmospheric pressure, it is possible to promote the liquefaction of the temperature of the ambient gas and the liquefaction of the moisture contained in the ambient gas or the closed circuit to provide the ambient gas in the suction drying chamber, and to use It is preferred to have a blower that circulates in a closed loop. Thereby, the ambient gas in the drying chamber can be forcibly circulated in the gas circulation path by T°°-in addition to the drying device of the present invention, comprising: suction of moisture contained in the ambient gas absorbed in the drying chamber -6-200918840 Wet agents are preferred. By using the moisture absorbent to absorb and remove the moisture contained in the ambient gas in the drying chamber, the water content of the ambient gas is lowered, and the ambient gas is heated by the condensation heat energy generated when the moisture absorbent is condensed. 'The vaporization heat energy absorbed by the gasification of the treated material in the drying chamber' can prevent the temperature from decreasing. Further, in the drying apparatus of the present invention, it is preferred that the condenser is disposed in a part of the drying chamber. By this, the object to be treated in the drying chamber is dried by a low-humidity gas which is removed by the water, and the object to be treated is heated by the heat of condensation of the condenser to promote drying of the object to be treated. Further, in the case of a plurality of refrigerators of the present invention, it is preferable to change the type of the refrigerant of each refrigerator. Thereby, the ambient gas is sequentially cooled by the plurality of evaporators, and when the ambient gas is sequentially heated by the plurality of condensers, the refrigerant of the individual coolers is selected according to the cooling sequence and the heating sequence. The ambient gas can be cooled and warmed more efficiently. Advantageous Effects of Invention (1) According to the drying chamber of the workpiece; and a gas circulation path for circulating an ambient gas in the drying chamber; and a refrigerator including an evaporator and a condenser connected by a refrigerant circulation path, The evaporator and the condenser are disposed in a drying device in a closed circuit formed by a drying chamber and a gas circulation path, and the drying efficiency is particularly improved by suppressing heat dissipation to the outside of the system and utilizing heat energy efficiently. In addition, the ambient gas in the drying chamber -7-200918840 stays in the closed circuit and is not discharged outside the system, preventing odor generation. (2) The gas circulation path is obtained by sequentially passing the ambient gas in the drying chamber through the evaporator and the condenser, and returning to the drying chamber, thereby cooling the ambient gas and removing the water, and then removing the moisture. The gas is heated to raise the temperature of the gas, and is returned to the drying chamber in a state close to the original temperature, thereby allowing the object to be treated to be dried at a normal temperature. (3) The drying chamber includes: a conveying device that conveys the workpiece in the drying chamber; and a gas that has passed through the condenser and impinges on a plurality of nozzles on the workpiece conveyed by the conveying device The low-humidity gas heated by the condenser can efficiently impinge on the workpiece in the drying chamber, thereby enabling efficient heat transfer and moisture separation. (4) Since the closed circuit has a compressor that sucks and compresses the ambient gas in the drying chamber and circulates it in the closed circuit, the drying chamber becomes a negative pressure state, which prevents the drying chamber from being The leakage of the odor outside the system 'and, by promoting the evaporation of the moisture from the object to be treated based on the decrease in the boiling point of the reduced pressure, can shorten the time taken for the solid-liquid separation. In addition, by being compressed to a pressure lower than atmospheric pressure, the temperature rise of the ambient gas and the liquefaction of the moisture contained in the ambient gas are promoted, and a high energy saving effect is obtained. (5) The ambient gas in the drying chamber of -8 - 200918840 can be forced in the gas circulation path by means of a blower on the closed circuit that sucks the ambient gas in the drying chamber and circulates it in the closed circuit. The ground circulation 'and the removal and warming of the moisture of the ambient gas' allows the dried material to be dried. (6) By absorbing the moisture contained in the ambient gas in the drying chamber by absorbing the moisture contained in the ambient gas in the drying chamber, the moisture content of the ambient gas can be reduced, and the moisture can be reduced. The efficiency of liquid separation is high. Further, the ambient gas is heated by the heat of condensation generated when the moisture is condensed by the moisture absorbent, and the heat of vaporization absorbed during the vaporization of the moisture of the treated object in the drying chamber prevents the temperature from being lowered. The heat of condensation of the moisture absorbent can also be effectively utilized. (7) When the number of refrigerators is plural, by changing the type of refrigerant in each refrigerator, it is possible to more efficiently cool and warm the ambient gas, and the temperature in the drying chamber can be set from below freezing point to 10 0. A wide range above 0 °c. [Embodiment] Fig. 1 is a model diagram of the entire drying apparatus in the embodiment of the present invention. In the first embodiment, the drying device 1 according to the embodiment of the present invention mainly comprises: a drying chamber 2; a cooling chamber 3; and a greenhouse 4; and a first refrigerator 5; and a second refrigerator 6; The third refrigerator 7 is configured. The first to third refrigerators 5, 6, and 7 are individually composed of evaporators 51, 615, and 713 and compressors 5 (:, 6 (:, 7) connected by the refrigerant circulation paths 5a, 6a, and 7a. (^, condensers 5d, 6d, 7d, pumps 5e, 6e, 7e and expansion valves (not shown in -9-200918840) are known as compression chillers (heat pumps). The drying chamber 2 is equipped with: The object to be dried (the object input port 20 of the object to be processed W; and the object agitator 21 for agitating the object W to be supplied from the object input port 2; and the object W to be transported in the drying chamber 2) An object conveying device 22 such as a belt conveyor, and a dry air blowing port 23 for blowing a low-humidity warm air sent from the greenhouse 4 to the object w conveyed by the object conveying device 22; The object discharge valve 24 of the object W is discharged. The object agitator 2 1 is used to pour the object W to be fed from the object input port 2 into the drying chamber 2 while stirring. The object to be introduced is placed on the object discharge valve 24, and the object is conveyed. The transporting device 22 is provided in a plurality of stages in the vertical direction, and the object w is transported in the flat direction while being sequentially dropped onto the object transporting device 22 of the lower stage until the object discharge valve 24 is reached. The object is conveyed by a long distance. The dry air blowing port 2 3 is arranged in a plurality of objects to be transported into the drying chamber 2 by the low-humidity warm air sent from the dry air blowing port 4a of the greenhouse 4 A bellows (collector) 25 on the device 22. The dry air outlet 23 is formed by a nozzle such as a round hole nozzle or a slit nozzle, so that the low-humidity warm air supplied from the greenhouse 4 can be efficiently impacted. The object W is transported by the object transport device 22. The getter 26 that absorbs the moisture contained in the ambient gas in the drying chamber 2 and the ambient gas in the suction drying chamber 2 are used for moisture absorption. In the inside of the drying chamber 2 in the present embodiment, the blower 27 is blown into the lower portion of the drying chamber 2 in the present embodiment, and the moisture is removed. Through the pipe 28 Disposed in the upper portion of the drying chamber 2. Further, under the moisture absorbent 26, a retainer 29 for storing water collected by the moisture absorbent 26 and a valve for discharging water accumulated in the retainer 29 are disposed. 30. The evaporators 5b, 6b, and 7b of the first refrigerator 5, the second refrigerator 6, and the third refrigerator 7 are housed in the cooling chamber 3. On the other hand, the first refrigerator 5, The individual condensers 5d, 6d, and 7d of the refrigerator 6 and the third refrigerator 7 are housed in the greenhouse 4. The drying chamber 2, the cooling chamber 3, and the greenhouse 4 are connected to each other. The tubes 8 a, 8 b, 8 c are connected to form a closed loop that is closed. The connecting pipe 8 a, the cooling chamber 3, the connecting pipe 8b, the adding greenhouse 4, and the connecting pipe 8c constitute a gas circulation path for circulating the ambient gas in the drying chamber 2. The connecting pipe 8a is provided with a compressor 9 for sucking the ambient gas in the drying chamber 2 and compressing it and for circulating it through the aforementioned gas circulation path. Further, a drain valve 10 for discharging the water condensed in the cooling chamber 3 out of the system is provided in the cooling chamber 3. As the drain valve 1 , a floating steam trap or the like can be used. Further, in the illustrated example, although the valve 1 is also provided in the connecting pipe 8b, the valve 丨1 may be omitted. Next, the operation of the drying device 1 having the above configuration will be described. In addition, the object W dried in the drying device 1 of the present embodiment is a tea leaf residue represented by a water-containing organic substance. The tea leaf residue (object W) is introduced from the object input port 20, and is introduced into the drying chamber 2 while being agitated by the object agitator 21. When the tea leaves are conveyed from the uppermost object -11 - 200918840, the device 22 is transported to the lowermost object conveying device 22, and is dried by the low-humidity warm air blown from the dry air blowing port 23. Here, the ambient gas system in the drying chamber 2 is sucked by the compressor 9, and is sent to the cooling chamber 3 through the connecting pipe 8a. The ambient gas (wet air) sent from the drying chamber 2 is cooled by sequentially passing through the evaporators 5b, 6b, 7b in the cooling chamber 3. Therefore, the moisture in the humid air is condensed by the decrease in the amount of saturated water vapor caused by the temperature drop, and is discharged from the system out of the drain valve 1 . Thereby, the temperature of the humid air drops to become dry air. Further, in the evaporators 5b, 6b, and 7b, the liquefied refrigerant is vaporized by taking heat from the ambient gas, and the vaporized refrigerant is compressed by the compressors 5c, 6c, and 7c, respectively, and sent to the condensers 5d and 6d. , 7d. Moreover, this dry air is sent to the inside of the greenhouse 4 through the connecting pipe 8b. The dry air to which the cooling chamber 3 is sent is heated by sequentially adding the condensers 7d, 6d, and 5d in the greenhouse 4, and returned to the drying chamber 2 through the connecting pipe 8c. The air blowing port 23 blows the tea leaf slag on the object conveying device 22. Further, in the condensers 5d, 6d, and 7d, the vaporized refrigerant is liquefied by applying heat to the dry air, and the liquefied refrigerant is sent to the evaporator 5b through the expansion valve through the pumps 5e, 6e, and 7e, respectively. 6b, 7b As described above, in the drying apparatus 1 of the present embodiment, the ambient gas (wet air) is cooled by the vaporization heat of the refrigerant by the plurality of evaporators 5b, 6b, 7b' in the cooling chamber 3. And condensing (condensing) to separate and remove moisture in the humid air, and by adding a plurality of condensers 5d, 6d, and 7d in the greenhouse 4, the moisture is removed by the condensation heat of the refrigerant. -12- 200918840 The ambient gas is heated, and the tea slag which is the object W is dried in the drying chamber 2 by the heated ambient gas. Here, in the drying apparatus 1 of the present embodiment, the drying chamber 2 and the evaporators 5b, 6b, and 7b and the condensers 5d, 6d, and 7d are disposed in a closed closed circuit, which can suppress the vaporization of the refrigerant. Both the thermal energy and the condensing heat energy are effectively utilized for heat dissipation outside the system. Thereby, the drying efficiency is particularly improved. Further, in the "drying device 1", during the process of taking in the humid air in a state of being pressurized by the compressor 9, the humid air is heated up, and the evaporated water is condensed to promote the object W. The evaporation of moisture can achieve high energy efficiency. Further, in the drying device 1 of the present embodiment, the dry air blown from the dry air blowing port 2 is a low-humidity gas having a relative humidity of 10% or less, and the object W is 5 m per object. The wind speed from the second to the sonic range is blown out to separate the object W from the wet air and the fine water droplets. Thereby, the drying efficiency of the object W is particularly enhanced. Further, the gas system is returned to the drying chamber 2 in a state in which the temperature of the original ambient gas before entering the connecting pipe 8a is returned to the drying chamber 2, and the drying of the object W is performed at normal temperature. Such a drying device 1 has an energy efficiency of several times to several tens of times as compared with the conventional drying system (the operating cost is 1 to a few tenths of a part). Further, only the water is separated from the object W containing water and discarded, and the temperature of the object W itself does not need to be raised to a temperature higher than necessary. That is, the drying device 1 consumes almost no energy and is a drying device that is separated from the conventional drying device. In addition, the ambient gas system in the drying chamber 2 is stored in the closed circuit. -13-200918840 is not discharged outside the system, and odor can be prevented. Namely, in the drying apparatus 1, all of the water is separated from the object w containing water by the treatment in the closed closed circuit, and the odor and the heat pile are not discharged outside the system. In particular, in the drying apparatus 1, the drying chamber 2 is negative in the closed circuit by the compressor 9 having the ambient gas extracted from the drying chamber 2 and compressed, and circulating in the closed circuit. In the pressed state, when the object W is loaded from the object input port 20, leakage of the odor to the outside of the system can be prevented. Further, in the drying chamber 2, the boiling point is lowered by the pressure reduction by the compressor 9, and the time taken for the solid-liquid separation can be shortened compared to the conventional solid-liquid separation device by the refrigerant circulation. Further, in the drying device 1, the moisture absorbent 26 is used, and the moisture contained in the environmental gas in the drying chamber 2 is absorbed and removed by the moisture absorbent 26 to reduce the water content of the environmental gas. Improve drying efficiency. Further, the ambient gas system is heated by the heat of condensation generated when the moisture of the moisture absorbent 26 is condensed, and the temperature can be prevented by the heat of vaporization absorbed during the vaporization of the water of the object W in the drying chamber 2. reduce. That is, in the drying apparatus 1, the heat of condensation can be utilized more effectively, and the intake of energy from the outside can be minimized. In the drying apparatus 1 of the present embodiment, the number of the evaporators 5b, 6b, and 7b provided in the cooling chamber 3 is changed to be 'when the object W is small, or low. In the case of an object with a water content, the thermal cycle of excess refrigerant can be eliminated. Alternatively, even in the case of a small amount or a low water content object, by increasing the number of evaporators 5b, 6b, 7b - 14 - 200918840, the solid liquid can be separated at a higher speed. Further, in the above-described drying device 1, a compression type refrigerator is used as the first to third refrigerators 5, 6, and 7', but an absorption type refrigerator may be used. Fig. 2 is a model diagram of the entire drying apparatus 1 of the absorption chillers 50, 60, 70 in place of the compression chiller of Fig. 1. As shown in Fig. 2, in the case of the absorption refrigerating machines 50, 60, 70, instead of the compressors 5c, 6c, 7c of Fig. 1, only the regenerators 50c, 60c, 7c are used, which are basically the same. Composition. In the case where the drying device ia is disposed in a thermal energy device such as a combustion furnace or a thermal decomposition device, by using the absorption chillers 50, 60, 70, the heat energy discharged from the thermal energy device can be regarded as the regenerator 50c, 60c, 70c heat source to use. Further, as an embodiment of the present invention, as shown in Fig. 3, a part of the condensers 5d, 6d, and 7d may be disposed in the drying chamber 2 as the auxiliary condensers 50d, 60d, and 70d. α. According to the drying apparatus 1b, the object W in the drying chamber 2 is dried by the low-humidity gas whose moisture is removed as described above, by the condensation of the auxiliary condensers 50d, 60d, 7〇d. The heat energy is used to heat the object w itself, and the drying of the object W can be promoted. Further, as an embodiment of the present invention, as shown in Fig. 4, instead of the compressor 9, an ambient gas body provided in the suction drying chamber 2 may be formed and used to circulate in the closed circuit. The drying device lc of the blower 31. According to such a drying device lc, the ambient gas in the drying chamber 2 can be forcibly circulated in the gas circulation path to be dried. In Fig. 4, the blower 31 is provided in the connecting pipe 8a, but may be provided in the connecting pipes 8b and 8c in -15-200918840. Further, as an embodiment of the present invention, as shown in Fig. 5, the cooling chamber 3 and the greenhouse 4 may be integrated to serve as the drying device Id of the dehumidifying chamber 32. In this case, the ambient gas sucked into the dehumidifying chamber 32 by the connecting pipe 8a is cooled by sequentially passing the evaporators 5b, 6b, and 7b of the lower stage from the lower side, and after dehumidification, The heaters 7d, 6d, and 5d of the upper stage are sequentially heated from above, and are returned to the drying chamber 2 through the connection pipe 8c. Even in such a configuration, as in the above, the drying of the object W can be performed. INDUSTRIAL APPLICABILITY The drying device of the present invention can effectively utilize various heat transfer of radiation, convection, and contact heat transfer in the heat transfer mechanism in the system, and can effectively utilize the characteristics of decompression and pressurization. The new drying device can be expected to have high energy efficiency and is a useful and economical drying device. Further, even if it is an object to be treated with an odor, it is a useful drying device having high environmental performance because the odor is not discharged outside the system. In particular, in the case of surface hardening, scorching, or deterioration, the organic matter or the like which cannot be used in a high-speed drying system can be dried at a normal temperature (0 to 50 ° C). In the drying device, only moisture can be removed. For example, protein-free denaturation, meat, vegetables, or fruits can be dried, and clothes can be dried. BRIEF DESCRIPTION OF THE DRAWINGS -16- 200918840 Fig. 1 is a model diagram of the entire drying apparatus in the embodiment of the present invention. Fig. 2 is a model diagram of the entire drying apparatus using an absorption type refrigerator in place of the compression type refrigerator of the drawing. Fig. 3 is a model diagram showing another embodiment of the drying device. Fig. 4 is a model diagram showing another embodiment of the drying device. Fig. 5 is a model diagram showing another embodiment of the drying device. [Description of main component symbols] 1. la, lb, lc, Id: drying device 2: drying chamber 3: cooling chamber 4: adding greenhouse 4a: dry air air outlet 5, 6, 7: freezer 50 ' 60, 70 : absorption refrigerating machines 5a, 6a, 7a: refrigerant circulation paths 5b, 6b, 7b: evaporators 5c, 6c, 7c: compressors 5d, 6d, 7d: condensers 5e, 6e, 7e: Lipu 8a, 8b, 8c: Connecting pipe 9: Compressor 1 〇: Drain valve -17- 200918840 11 : Valve 2 0 : Object input port 2 1 : Object agitator 22 : Object conveying device 2 3 : Dry air blowing port 24 : Object Discharge valve 2 5 : window box 2 6 : moisture absorbent 27 : blower 2 8 : piping 2 9 : retainer 3 0 : valve 3 1 : blower 3 2 : drying chamber 50d, 60d, 70d: auxiliary condenser -18-