1245713 (1) 玫、發明說明 【發明所屬之技術領域】 本發明係關於例如被裝備於車輛等的空氣乾燥器，該 空氣乾燥器係在將空氣壓縮機吐出的壓縮空氣以預定的壓 力範圍貯存於氣罐（ail· tank )之前，用來進行從壓縮空 氣將水分等的異物除去的處理。 【先前技術】 作爲上述空氣乾燥器，已知有第6圖〜第8圖所示之 構成。（例如，參照專利文獻1 )。該空氣乾燥器1 〇 〇是 因爲在如第6圖所示的底座構件1 〇 1之上設置有乾燥部 ]02，所以從外部的空氣壓縮機（air compressor )的空氣 由被設置在底座構件101的進氣口部101a進入，在壁面 將進入的空氣冷卻’而將水分與油分積存在空氣流通部的 底部]03，並且將空氣向被設置在位於底座構件1 〇1之上 的乾燥部1 〇2的內側的濾油器〗04輸送。藉由濾油器1 04 來讓小的油滴或塵埃除去的空氣是進入乾燥部1 〇 2內，被 輸送到設置在乾燥部1 0 2內之具備可還原的乾燥劑1 〇 5 a 的乾燥筒I 〇 5內而讓水分除去，總之藉由除濕作用而形成 乾燥空氣，在經由設置於乾燥部】02的驅氣室]〇 6之後， 透過設置在底座構件〗〇 1的出氣口部1 0 1 b的止回閥1 0 8 而供給到內藏在外部之未圖示的氣罐及底座構件1 〇 1的壓 力調節器I 2 0 (參照第7圖）。然後，當空氣壓達到壓力 調節器]2 0的壓力上限時，依據壓力調節器]2 〇的司令壓 -4 - 1245713 (2) 力而讓排洩閥】Ο 9開放’讓乾燥筒1 Ο 5內的空氣經由排氣 通路]1 0而開放到大氣。其開放係因爲急劇，所以藉由乾 燥筒1 〇 5內的空氣而讓濾油器1 0 4洗淨，並且積存在底部 1 0 3的油分凝縮水也經由排氣通路1 1 0而被放出到大氣， 加上驅氣室1〇6內的乾燥空氣通過孔107而在乾燥筒105 內逆流，從乾燥劑1 〇5a奪去水分而運到大氣，進行乾燥 劑1 0 5 a的還原。其後，當依據壓力調節器1 2 0的司令壓 力而關閉排洩閥1 09時，以返回上述除濕作用的方式所構 成。 壓力調節器1 2 0是以控制如上述排洩閥1 〇 9的開閉之 方式所構成，如以下的構造。亦即，壓力調節器1 2 0是具 備如第 7圖所示用來使調節器活塞 1 2 2移動的空洞 12 0a，在該調節器活塞122是以壓縮壓縮彈簧121的方式 通過通路而從出氣口部101b的壓力空氣（或外部氣罐的 壓力空氣）作用。此時，如果壓力空氣爲規定壓力以下的 話，由於壓縮彈簧1 2 1的壓縮狀態不變化，因此控制口 1 2 3的壓力空氣是通過排氣閥桿1 2 4而被放出到大氣。然 後’出氣口部l〇Ib的壓力空氣（或外部氣罐的壓力空 氣）上升，當作用在調節器活塞1 22的力比壓縮彈簧！ 2 1 的壓縮力還強時，調節器活塞1 2 2向壓縮彈簧丨2 1側移 動，讓排氣閥桿1 24關閉於調節器活塞122，讓控制口 123的空氣與大氣截斷。而且當出氣口部的壓力空 氣上升並放開且形成壓力以上時，調節器活塞1 22是爲了 更朝壓縮彈簧1 2 1側移動，因此藉由排氣閥桿I 2 4而讓調 -5- 1245713 (3) 節器閥]2 5開啓，透過該調節器閥1 2 5而讓出氣口部 1 〇 I b的壓力空氣供給到控制口] 2 3，利用到達排洩閥1 〇 9 的上面來將排洩閥]0 9推開。然後，出氣口部1 0 1 b的壓 力空氣逐漸地下降，而當讓調節器活塞1 2 2藉由壓縮彈簧 1 2 1而推回時，調節器閥1 2 5關閉，利用排氣閥桿1 24從 調節器閥125分離，而控制口 123的空氣通過排氣閥桿 1 24且被開放到大氣，將排洩閥1 〇9關閉。 在具有如此之壓力調節器120的空氣乾燥器100之 中，形成連接了上述排洩閥1 0 9的排氣通路1 1 0及壓力調 節器120的排氣通路126的構成。具體上，壓力調節器 1 20的排氣通路1 26是如第8圖所示具備在用來使調節器 活塞122移動之空洞<]20a連接其中一端，而且另一端連 接在底座構件1 01的外面之縱向孔1 2 7、及其中一端連接 在排洩閥109的排氣通路11〇，而且另一端連接在底座構 件1 0 ]的外面之橫向孔1 2 8，縱向孔1 2 7及橫向孔1 2 8是 比兩者的連接部份的更外側藉由鋼球1 2 7 a、1 2 8 a來堵塞 並形成連通的構成。然後，藉由作爲如此調節器排氣通路 126的橫向孔128與排洩閥1〇9的排氣通路110連通連結 的構成，而防止調節器排氣通路]2 6的出口由於凍結等而 阻塞。而且，在第7圖是顯示有橫向孔128。 〔專利文獻1〕 日本特許第3 3 2 2 3 3 7號公報 【發明內容】 〔發明所欲解決之課題〕 -6 - 1245713 (4) ' 可是’在先前的空氣乾燥器之中是作爲防止調節器排 氣通路之出口的凍結之手段，爲了作爲將如上述該調節器 的排氣通路的出口連接在排拽閥的排氣通路之構成，因此 從排洩閥的排氣較多時，其一部份具有向調節器的排氣通 路逆流的情況。尤其，根據車輛的式樣是爲了獲得更大的 力，在使用更高壓力的空氣的情況，例如在從現狀 9kg/cm2到了 llkg/cm2高壓力化的情況是由於排氣的流 量變多，因此有所謂容易產生向上述調節器的排氣通路的 空氣逆流的難處。然後，在發生了該逆流的情況是讓調節 器的活塞推回，而阻礙排洩閥的開放動作，變成乾燥劑的 還原不完全。 本發明是因爲爲了解決如此的先前技術之課題而加以 開發完成者，所以沒有產生所謂排洩閥的排氣逆流到調節 器的排氣通路之不良狀況，提供可防止調節器的排氣通路 的出口阻塞的空氣乾燥器來作爲目的。 〔用以解決課題之手段〕 申請專利範圍第1項的發明爲一種空氣乾燥器，係在 具有被安裝於車體的車體安裝面的底座構件，設置有將用 來使從導入空氣分離的廢液排出到外部的排洩閥的開閉， 對應於已乾燥的導出空氣的壓力變化而控制的壓力調節器 之空氣乾燥器之中，在上述車體安裝面，具備將大氣壓空 間形成在與安裝有該車體安裝面的車體之間的凹部，在其 凹部內’配置有用來使上述壓力調節器內的空氣排出到外 1245713 (5) ' ’ 部的調節器排氣通路的出口爲其特徵。 在β空氣乾媒§§:之中，如申請專利範圍第2項，可作 爲上述壓力調節器藉由伴隨於供給到活塞移動用空洞的其 中一方側之已乾燥的導出空氣之壓力變化的活塞移動而控 制排洩閥的開閉之構成。 申請專利範圍第3項的發明爲一種空氣乾燥器，係上 述調節器排氣通路具有設置在上述底座構件的內部而且在 上述空洞的另一方側連接其中一端的排氣孔、及連接該排 氣孔的另一端而且在上述凹部配置有出口的配管爲其特 徵。 申請專利範圍第4項及第5項的發明爲一種空氣乾燥 器’其中上述·車體安裝面是以形成在底座構件的肋部之端 面所構成，在藉由該肋部所圍著的凹部配置有上述調節器 排氣通路的出口爲其特徵。 〔發明的效果〕 在根據申請專利範圍第1項的空氣乾燥器的情況，係 有效地利用安裝有車體安裝面的車體面而形成從外部被關 閉的空間，利用使調節器排氣通路的出口開口於該空間內 而可防止由於凍結的阻塞。因此，沒有如先前從排洩閥的 排氣向調節器的排氣通路逆流。伴隨於此，不但沒有由於 讓調節器的活塞推回而讓排洩閥的開放動作阻礙，而且也 沒有乾燥劑的還原不完全。 在根據申請專利範圍第3項的情況’係即使壓力調節 -8- (6) 1245713 器與車體安裝面分離，也藉由使適當的配管介設在與壓力 調節器連接的排氣孔與凹部之間，而可使調節器排氣通路 的出口達到凹部。 在根據申請專利範圍第4項及第5項的情況，係原先 被形成在先前的空氣乾燥器的底座構件，可照樣使用肋部 內的凹部，可照樣使用從先前的空氣乾燥器構成零件。 【實施方式】 以下，具體性地說明本發明的實施方式。 第1圖是顯示本實施方式的空氣乾燥器的正面剖面 圖，第2圖是顯示具備在第1圖的空氣乾燥器的調節器部 份的橫剖面圖，第3圖是顯示具備在第1圖的空氣乾燥器 的調節器排氣通路的說明圖（正面圖），第4圖是調節器 排氣通路的說明圖（底面圖），第5圖是調節器排氣通路 的說明圖（側面圖）。 本實施方式的空氣乾燥器，係因爲在如第1圖所示的 底座構件1之上設置有乾燥部2，所以除了調節器排氣通 路的構成，與先前的空氣乾燥器同樣構造。以下詳述本實 施方式的空氣乾燥器的構成。 底座構件1是具有進氣口部la，在進氣口部la是導 入有從外部的空氣壓縮機（air compressor)來的空氣。 導入空氣是在空氣流通部的壁面被冷卻，使從導入空氣所 分離的水分與油分作爲廢液而積存在空氣流通部的底部 3，並且讓空氣輸送到位在底座構件1之上而設置在乾燥 -9- 1245713 (7) 部2的內側之濾油器4，在此處讓小的油滴或塵埃除去。 經過濾油器4的空氣是進入乾燥部2內，被輸送到設 置在乾燥部2內之具備可還原的乾燥劑5 a的乾燥筒5內 而讓水分除去，總之藉由除濕作用而形成乾燥空氣，在經 由δ又置於乾燥部2的驅氣室6之後’透過設置在底座構件 1的出氣口部1 b的止回閥8而供給到內藏在外部之未圖 示的氣罐及底座構件1的壓力調節器 20 (參照第 2 圖）。然後，當空氣壓達到壓力調節器2 0的壓力上限 時，依據壓力調節器20的司令壓力而讓排洩閥9開放， 讓乾燥筒5內的空氣經由排氣通路1 〇而開放到大氣。其 開放係因爲急劇，所以藉由乾燥筒5內的空氣而讓濾油器 4洗淨，並且積存在底部3的油分凝縮水（廢液）也經由 排氣通路1 〇而被放出（排出）到大氣，加上驅氣室6內 的乾燥空氣通過孔7而在乾燥筒5內逆流，從乾燥劑5 a 奪去水分而運到大氣，進行乾燥劑5 a的還原。其後，當 依據壓力調節器2 0的司令壓力而關閉排洩閥9時，以返 回上述除濕作用的方式所構成。 壓力調節器2 0是以控制如上述排洩閥9的開閉之方 式所構成，如以下的構造。亦即，壓力調節器2 0是具備 如弟2圖所不用來使g周|卩fg活塞2 2移動的空洞2 0 a，在 該調節器活塞2 2是以壓縮壓縮彈簧2 1的方式通過空氣導 入路2 0 b而從出氣口部1 b之已乾燥的壓力空氣（或外部 氣罐的壓力空氣）作用。此時，如果從空氣導入路2 Ob所 導入的壓力空氣爲規定壓力以下的話，由於壓縮彈簧21 -10- (8) 1245713 的壓縮狀態不變化，因此控制口 2 3的壓力空氣是通過排 氣閥桿2 4而被放出到大氣。然後，出氣口部1 b的壓力空 氣（或外部氣罐的壓力空氣）上升，當作用在調節器活塞 22的力比壓縮彈簧2 1的壓縮力還強時，調節器活塞22 向壓縮彈簧2 1側移動，讓排氣閥桿24關閉於調節器活塞 22，讓控制口 23的空氣與大氣截斷。而且當出氣口部lb 的壓力空氣上升並放開到壓力以上時，調節器活塞22是 爲了更朝壓縮彈簧2 1側移動，因此藉由排氣閥桿24而讓 調節器閥2 5開啓，透過該調節器閥2 5而讓出氣口部1 b 的壓力空氣供給到控制口 2 3，利用到達排洩閥9的上面 來將排洩閥9推開。然後，出氣口部1 b的壓力空氣逐漸 地下降，而當讓調節器活塞22藉由壓縮彈簧2 1而推回 時’調節器閥25關閉，利用排氣閥桿24從調節器閥25 分離，而控制口 23的空氣通過排氣閥桿24且被開放到大 氣，將排洩閥9關閉。 在具有如此之壓力調節器20的空氣乾燥器之中，形 成上述排洩閥9的排氣通路1 〇及壓力調節器20的排氣通 路2 6獨立的構成。具體上，壓力調節器2 0的排氣通路 26是如第3圖所示，具備與空洞20a的空氣導入路20b 隔著調節器活塞2 2的移動域而在相反側（位在壓縮彈簧 2 I之側）連接其中一端（上端）2 7 a，並且作爲另一端 (下端）2 7 b連接在底座構件]的外面的排氣孔之縱向孔 2 7、及在該縱向孔2 7的另一端（下端）2 7 b連接了入口 2 8a的配管28，配管28的出口 28b是被配置在設置於托 -11 - 1245713 ⑼ 架29的車體安裝面29a的凹部3 ]內。該凹部3 I是用托 架29的壁部29b、及從該壁部29b的外緣部與中央部使 之朝向側方而突出的肋部3 2來圍著，在其肋部3 2的端面 形成有上述車體安裝面29a。在壁部29b是形成有貫通孔 29c，而透過該貫通孔29c且讓配管28的出口 28b插通於 凹部3 1內。在凹部3 1的下側是在洩水用的貫通孔3 1 a貫 通了肋部3 2的狀態下所形成，凹部3 1內是即使將車體安 裝面29a安裝在車體30也可作爲大氣壓空間。 因此，在本實施方式的空氣乾燥器之中，係有效地利 用安裝有車體安裝面29a的車體30之面部份而從外部所 關閉的空間，在實際上是形成經由貫通孔3 1 a的大氣壓空 間，在該空間內利用使調節器排氣通路2 6的出口 2 8 b開 口，而可防止由於凍結的阻塞。因此，沒有如先前從排洩 閥的排氣逆流到調節器的排氣通路。伴隨於此，不但沒有 由於讓壓力調節器20的調節器活塞22推回而讓排洩閥9 的開放動作阻礙，而且也無乾燥劑5 a的還原不完全。 另外’在本實施方式是讓排氣通路2 6設置在底座構 件1的內部，因爲具有在與空洞20a的空氣導入路20b相 反側連接其中一端的縱向孔2 7 (排氣孔）、及連接在該 縱向孔2 7的另一端而且在凹部3 1配置有出口的配管2 8 之構成，所以即使壓力調節器2 0與車體安裝面2 9 a分 離，在與壓力調節器2 0連接的縱向孔2 7及凹部3 1之間 由於介設適當的配管2 8而可使調節器排氣通路2 6的出口 2 8b到達凹部3 1。另外，在本實施方式的情況是僅將作爲 -12- 1245713 (10) 排氣孔的縱向孔27進行孔加工，如果在其縱向孔27連 配管2 8而使出口配置在凹部3 1的話也可，藉由先前的 加工前之底座構件，也就是將縱向孔及橫向孔進行孔加 而可照樣使用形成前的底座構件。另外，在本實施方式 中，車體安裝面29a是由形成在底座構件1的肋部32 端面所構成，因爲在藉由該肋部3 2而圍著的凹部3 1配 有調節器排氣通路2 6的出口，所以原來所形成在先前 空氣乾燥器的底座構件，可照樣使用肋部3 2內的凹 3 1，就可照樣使用先前的底座構件。 而且，在上述的實施方式是雖然作爲調節器排氣通 的排氣孔而使用縱向孔（2 7 )的構成，但是本發明並不 限於此，如果在與空洞的空氣導入路相反側以連接其中 端的方式來貫通底座構件的肉部的貫通孔的話也可，不 貫通孔的方向性。 另外，在上述實施方式是雖然用來將調節器排氣通 的配管之出口配置的凹部使用預先備置在安裝於車體的 體安裝面的底座構件，但是本發明並不侷限於此，在底 構件沒有存在如上述的凹部的情況是即使在底座構件形 上述凹部也可。 另外，在上述實施方式，在調節器的空氣導入路是 然以導入有從底座構件的出氣口部的壓力空氣（或外部 罐的壓力空氣）之方式來進行，但是本發明並不侷限 此，即使例如以從來自出氣口部到外部氣罐之任意的地 將壓力空氣導入的方式也可。 接 孔 工 之 之 置 的 部 路 侷 論 路 車 座 成 雖 氣 於 點 -13 - 1245713 (11) 【圖式簡單說明】 第1圖是顯示本發明一實施方式的空氣乾燥器的正面 剖面圖。 第2圖是顯7P；具備在第1圖的空氣乾燥器的調節器部 份的橫剖面圖。 第j圖是顯不具備在第1圖的空氣乾燥器的調節器排 氣通路的說明圖（正面圖）。 第4圖是顯示具備在第1圖的空氣乾燥器的調節器排 氣通路的說明圖（底面圖）。 第5圖是顯示具備在第1圖的空氣乾燥器的調節器排 氣通路的說明圖，（側面圖）。 第6圖是顯示先前的空氣乾燥器的正面剖面圖。 第7圖是顯示具備在先前的空氣乾燥器的調節器部份 的橫剖面圖。 第8圖是顯示具備在先前的空氣乾燥器的調節器排氣 通路的說明圖（正面圖）。 〔主要元件符號說明〕 1底座構件 2乾燥部 5 a乾燥劑 9排洩閥 2 0壓力調節器 -14- 1245713 (12) 2 0 a空洞 2〇b空氣導入路 2 2調節器活塞 2 6排氣通路 2 7縱向孔（排氣孔） 2 7a 上端 2 7 b下端1245713 (1) Description of the invention [Technical field to which the invention belongs] The present invention relates to, for example, an air dryer equipped in a vehicle or the like, and the air dryer stores compressed air discharged from an air compressor within a predetermined pressure range. It is used to remove foreign matter such as moisture from compressed air before the air tank. [Prior Art] As the above-mentioned air dryer, the configurations shown in Figs. 6 to 8 are known. (For example, refer to Patent Document 1). This air dryer 1 00 is provided with a drying section above the base member 100 as shown in FIG. 6. Therefore, air from an external air compressor is installed on the base member. The air inlet portion 101a of 101 enters, cools the incoming air on the wall surface, and stores moisture and oil in the bottom of the air circulation portion] 03, and directs the air to a drying portion located above the base member 101. 1 〇2 inner oil filter 〖04 delivery. The air removed by small oil droplets or dust through the oil filter 1 04 enters the drying section 1 02 and is transported to a desiccant 1 0 5 a provided in the drying section 102. Moisture is removed in the drying cylinder I 〇5. In short, dry air is formed by the dehumidification effect. After passing through the purge chamber provided in the drying unit] 02, it passes through the air outlet portion provided in the base member 〇〇1. The check valve 1 0 1 b of 1 0 1 b is supplied to a pressure regulator I 2 0 (see FIG. 7) of a gas tank and a base member 1 0 1 (not shown) which are built in externally. Then, when the air pressure reaches the upper pressure limit of the pressure regulator] 2 0, let the drain valve according to the command pressure of the pressure regulator] 2 -10-1245713 (2) force to let the drain valve] 〇 9 open 'Let the drying cylinder 1 〇 5 The air is released to the atmosphere through the exhaust passage] 10. The opening is sharp, so the oil filter 104 is cleaned by the air in the drying cylinder 105, and the oil condensation condensation stored in the bottom 103 is also discharged through the exhaust passage 1 10. Into the atmosphere, the dry air in the purge chamber 106 is passed through the hole 107 to flow countercurrently in the drying cylinder 105, and the moisture is removed from the desiccant 105a and transported to the atmosphere to reduce the desiccant 105a. Thereafter, when the drain valve 109 is closed in accordance with the commander pressure of the pressure regulator 120, it is configured to return to the above-mentioned dehumidifying effect. The pressure regulator 120 is configured to control the opening and closing of the above-mentioned drain valve 109, and has the following structure. That is, the pressure regulator 1 2 0 is provided with a cavity 12 0a for moving the regulator piston 1 2 2 as shown in FIG. 7. Pressurized air (or pressurized air from an external air tank) of the air outlet 101b acts. At this time, if the pressure air is equal to or lower than the predetermined pressure, the compression state of the compression spring 1 2 1 does not change, so the pressure air at the control port 1 2 3 is released to the atmosphere through the exhaust valve rod 1 2 4. Then, the pressure air (or the pressure air from the external air tank) of the air outlet portion 10Ib rises, and when the force acting on the regulator piston 1 22 is more than the compression spring! When the compression force of 2 1 is still strong, the regulator piston 1 2 2 moves to the compression spring 丨 2 1 side, and the exhaust valve rod 1 24 is closed to the regulator piston 122, so that the air in the control port 123 is cut off from the atmosphere. Moreover, when the pressure air at the air outlet portion rises and is released to become more than the pressure, the regulator piston 1 22 is moved further toward the compression spring 1 2 1 side, so the exhaust valve lever I 2 4 is used to make the adjustment -5 -1245713 (3) Controller valve] 2 5 is opened, and the pressure valve at the air outlet part 〇I b is supplied to the control port through the regulator valve 1 2 5. It is used to reach the top of the drain valve 1 〇 9 Come to push the drain valve] 0 9 open. Then, the pressure air at the air outlet portion 1 0 1 b gradually decreases, and when the regulator piston 1 2 2 is pushed back by the compression spring 1 2 1, the regulator valve 1 2 5 is closed, and the exhaust valve lever is used. 1 24 is separated from the regulator valve 125, and the air in the control port 123 passes through the exhaust valve stem 1 24 and is opened to the atmosphere, and the exhaust valve 10 is closed. The air dryer 100 having such a pressure regulator 120 has a configuration in which the exhaust passage 110 connected to the above-mentioned drain valve 10 9 and the exhaust passage 126 of the pressure regulator 120 are formed. Specifically, the exhaust passage 1 26 of the pressure regulator 120 is provided with a cavity <] 20a connected to one end of the regulator piston 122 as shown in Fig. 8 and the other end is connected to the base member 1 01. The outer longitudinal holes 1 2 7 and one of them are connected to the exhaust passage 11 of the exhaust valve 109 and the other end is connected to the lateral holes 1 2 8, the longitudinal holes 1 2 7 and the lateral The holes 1 2 8 are closed from the outside of the connection portion of the two by steel balls 1 2 7 a and 1 2 8 a to form a connection. Then, the lateral hole 128 serving as the regulator exhaust passage 126 communicates with the exhaust passage 110 of the drain valve 10 to prevent the regulator exhaust passage 26 from being blocked due to freezing or the like. Further, in FIG. 7, a lateral hole 128 is shown. [Patent Document 1] Japanese Patent No. 3 3 2 2 3 3 7 [Summary of the Invention] [Problems to be Solved by the Invention] -6-1245713 (4) 'However' was used in the previous air dryer to prevent The means for freezing the outlet of the regulator exhaust passage is to connect the outlet of the regulator exhaust passage to the exhaust passage of the exhaust valve as described above. Therefore, when there is a large amount of exhaust from the exhaust valve, Some of them may flow back to the exhaust passage of the regulator. In particular, according to the model of the vehicle, in order to obtain greater force, when a higher pressure air is used, for example, when the current pressure is increased from 9 kg / cm2 to llkg / cm2, the flow rate of the exhaust gas is increased, so There is a problem that it is easy to cause a reverse flow of air to the exhaust passage of the regulator. Then, when this reverse flow occurs, the piston of the regulator is pushed back, which prevents the opening operation of the drain valve, resulting in incomplete reduction of the desiccant. The present invention has been developed in order to solve such a problem of the prior art, so that there is no problem that the so-called backflow of exhaust gas from the exhaust valve back to the exhaust passage of the regulator is provided, and an outlet that prevents the exhaust passage of the regulator is provided A blocked air dryer comes for the purpose. [Means to Solve the Problem] The invention in the first scope of the patent application is an air dryer, which is provided on a base member having a vehicle body mounting surface to be mounted on a vehicle body. The opening and closing of the waste valve discharged to the outside is an air dryer of a pressure regulator controlled in accordance with the pressure change of the dried outlet air. The vehicle body mounting surface is provided with an atmospheric pressure space formed between The recessed portion between the vehicle body of the vehicle body mounting surface is characterized in that the outlet of the regulator exhaust passage for exhausting the air in the pressure regulator to the outside 1245713 (5) '' . Among β air dry media §§: If the scope of the patent application is the second item, the piston can be used as the above-mentioned pressure regulator by changing the pressure of the dry exhaust air supplied to one side of the piston moving cavity. A structure that controls the opening and closing of the drain valve by moving. The invention according to claim 3 is an air dryer. The regulator exhaust passage has an exhaust hole provided in the base member and connected to one end of the cavity on the other side of the cavity and to the exhaust. The other end of the hole is characterized by a pipe in which an outlet is arranged in the recess. The inventions in the fourth and fifth claims are an air dryer, in which the vehicle body mounting surface is formed by an end surface of a rib portion of a base member, and the recess portion surrounded by the rib portion It is characterized by an outlet provided with the above-mentioned regulator exhaust passage. [Effects of the Invention] In the case of the air dryer according to the first patent application scope, the vehicle body surface on which the vehicle body mounting surface is installed is effectively used to form a closed space from the outside, and the regulator exhaust passage is used. The exit opening in the space prevents blocking due to freezing. Therefore, there is no reverse flow from the exhaust valve exhaust to the regulator exhaust passage as before. As a result, the opening of the drain valve is not hindered by pushing the regulator piston back, and there is no incomplete reduction of the desiccant. In the case of item 3 of the scope of the patent application, even if the pressure regulator -8- (6) 1245713 is separated from the vehicle body mounting surface, an appropriate piping is provided between the exhaust hole connected to the pressure regulator and Between the recesses, the outlet of the regulator exhaust passage can reach the recesses. According to items 4 and 5 of the scope of the patent application, the base member was originally formed on the previous air dryer, and the recesses in the ribs could be used as usual, and the parts from the previous air dryer could also be used. [Embodiment] Hereinafter, an embodiment of the present invention will be specifically described. FIG. 1 is a front cross-sectional view showing the air dryer of the present embodiment, FIG. 2 is a cross-sectional view showing a regulator portion provided in the air dryer of FIG. 1, and FIG. 3 is a view showing the air dryer provided in the first embodiment. The explanatory diagram of the regulator exhaust passage of the air dryer (front view), FIG. 4 is the explanatory diagram of the regulator exhaust passage (bottom view), and FIG. 5 is the explanatory diagram of the regulator exhaust passage (side view) Figure). The air dryer of this embodiment is provided with the drying section 2 on the base member 1 as shown in Fig. 1, and therefore has the same structure as the conventional air dryer except for the structure of the regulator exhaust passage. The structure of the air dryer of this embodiment will be described in detail below. The base member 1 has an air inlet portion la, and air is introduced into the air inlet portion la from an external air compressor. The introduced air is cooled on the wall surface of the air circulation portion, and the moisture and oil separated from the introduced air are accumulated in the bottom portion 3 of the air circulation portion as waste liquid, and the air is transported to the base member 1 and installed in a dry state. -9- 1245713 (7) The oil filter 4 on the inner side of the section 2 allows small oil droplets or dust to be removed here. The air passing through the oil filter 4 enters the drying section 2 and is transported to a drying cylinder 5 provided with a reducible desiccant 5 a provided in the drying section 2 to remove moisture. In short, drying is formed by dehumidification. The air passes through δ and is placed in the purge chamber 6 of the drying section 2 again through a check valve 8 provided in the air outlet portion 1 b of the base member 1 and is supplied to a gas tank (not shown) and a built-in outside. Pressure regulator 20 of the base member 1 (see FIG. 2). Then, when the air pressure reaches the upper pressure limit of the pressure regulator 20, the drain valve 9 is opened in accordance with the commander pressure of the pressure regulator 20, and the air in the drying cylinder 5 is opened to the atmosphere through the exhaust passage 100. The opening is rapid, so the oil filter 4 is cleaned by the air in the drying cylinder 5, and the oil condensation condensation (waste liquid) accumulated in the bottom 3 is also discharged (discharged) through the exhaust passage 10. Into the atmosphere, the dry air in the purge chamber 6 is passed through the holes 7 to flow countercurrently in the drying cylinder 5 to remove the moisture from the desiccant 5 a and transport it to the atmosphere to reduce the desiccant 5 a. Thereafter, when the drain valve 9 is closed in accordance with the commander pressure of the pressure regulator 20, it is constituted so as to return to the above-mentioned dehumidifying effect. The pressure regulator 20 is configured to control the opening and closing of the drain valve 9 as described above, and has the following structure. That is, the pressure regulator 20 is provided with a cavity 2 0 a which is not used to move the g-cycle | 卩 fg piston 2 2 as shown in FIG. 2. The regulator piston 2 2 passes through the compression compression spring 21. The air introduction path 20b acts from the dried compressed air (or the compressed air from the external air tank) from the air outlet 1b. At this time, if the pressure air introduced from the air introduction path 2 Ob is equal to or lower than the predetermined pressure, the compression state of the compression spring 21 -10- (8) 1245713 does not change, so the pressure air of the control port 23 is passed through the exhaust The valve stem 24 is released to the atmosphere. Then, the pressure air (or the pressure air from the external air tank) of the air outlet portion 1 b rises. When the force acting on the regulator piston 22 is stronger than the compression force of the compression spring 21, the regulator piston 22 moves toward the compression spring 2. Moving on one side, the exhaust valve rod 24 is closed to the regulator piston 22, and the air in the control port 23 is cut off from the atmosphere. Moreover, when the pressure air at the air outlet portion lb rises and is released above the pressure, the regulator piston 22 moves to the compression spring 21 side, so the regulator valve 25 is opened by the exhaust valve rod 24, Through the regulator valve 25, the pressurized air from the air outlet portion 1b is supplied to the control port 23, and the drain valve 9 is pushed open by reaching the upper surface of the drain valve 9. Then, the pressure air in the air outlet portion 1 b gradually decreases, and when the regulator piston 22 is pushed back by the compression spring 21, the regulator valve 25 is closed, and the exhaust valve rod 24 is separated from the regulator valve 25. The air in the control port 23 passes through the exhaust valve rod 24 and is opened to the atmosphere, and the exhaust valve 9 is closed. In the air dryer having such a pressure regulator 20, the exhaust passage 10 of the exhaust valve 9 and the exhaust passage 26 of the pressure regulator 20 are formed independently. Specifically, as shown in FIG. 3, the exhaust passage 26 of the pressure regulator 20 is provided with the air introduction path 20b of the cavity 20a on the opposite side (positioned on the compression spring 2) across the moving range of the regulator piston 2 2 I side) is connected to one end (upper end) 2 7 a, and the other end (lower end) 2 7 b is connected to the longitudinal hole 2 7 of the exhaust hole outside the base member], and the other of the longitudinal hole 2 7 One end (lower end) 2 7 b is connected to the piping 28 of the inlet 2 8a, and the outlet 28b of the piping 28 is disposed in the recess 3 of the vehicle body mounting surface 29a provided in the bracket 11-1245713 stent 29]. The recessed portion 31 is surrounded by a wall portion 29b of the bracket 29 and a rib portion 32 projecting laterally from the outer edge portion and the central portion of the wall portion 29b. The vehicle body mounting surface 29a is formed on the end surface. A through-hole 29c is formed in the wall portion 29b, and the outlet 28b of the pipe 28 is passed through the through-hole 29c and inserted into the recessed portion 31. The recessed portion 31 is formed in a state where the through-hole 3 1 a for draining penetrates the rib portion 32, and the recessed portion 31 can be used even if the vehicle body mounting surface 29 a is mounted on the vehicle body 30. Atmospheric space. Therefore, in the air dryer according to the present embodiment, the space closed from the outside is effectively used by the surface portion of the vehicle body 30 on which the vehicle body mounting surface 29a is mounted, and in fact, the space is formed through the through hole 3 1 In the atmospheric pressure space a, the outlet 2 8 b of the regulator exhaust passage 26 is opened in the space to prevent clogging due to freezing. Therefore, there is no backflow from the exhaust valve to the regulator's exhaust path as before. Along with this, not only does the opening operation of the drain valve 9 be prevented by pushing the regulator piston 22 of the pressure regulator 20 back, but also there is no incomplete reduction of the desiccant 5a. In addition, in the present embodiment, the exhaust passage 26 is provided inside the base member 1 because it has a longitudinal hole 2 7 (exhaust hole) connected to one end on the opposite side to the air introduction path 20b of the cavity 20a, and a connection At the other end of the longitudinal hole 27 and the outlet pipe 2 8 is arranged in the recess 31, even if the pressure regulator 20 is separated from the vehicle body mounting surface 2 9 a, the pressure regulator 20 is connected to the pressure regulator 20 An appropriate piping 28 is interposed between the longitudinal hole 27 and the recess 31, so that the outlet 2 8b of the regulator exhaust passage 26 can reach the recess 31. In addition, in the case of this embodiment, only the longitudinal holes 27 which are -12-1251313 (10) exhaust holes are processed. If the pipes 28 are connected to the longitudinal holes 27 and the outlets are arranged in the recesses 3, 1 However, the base member before the processing, that is, the longitudinal hole and the transverse hole are added, can be used as before. In addition, in the present embodiment, the vehicle body mounting surface 29a is formed by the end face of the rib 32 formed on the base member 1, and the regulator exhaust is provided in the recess 31 surrounded by the rib 32. The outlet of the passage 26, so the original base member formed in the previous air dryer can still use the recess 31 in the rib 32, and the previous base member can also be used. Furthermore, in the above-mentioned embodiment, although the longitudinal hole (2 7) is used as the vent hole of the regulator exhaust passage, the present invention is not limited to this. If it is connected on the side opposite to the hollow air introduction path, The middle-end method may be used to penetrate the through-hole of the meat portion of the base member, but the directivity of the through-hole is not required. In the above-mentioned embodiment, the recessed portion for arranging the outlet of the regulator exhaust pipe uses a base member that is prepared in advance on the body mounting surface of the vehicle body. However, the present invention is not limited to this. When the member does not have the recessed portion as described above, the recessed portion may be formed in a base member. In addition, in the above embodiment, the air introduction path of the regulator is performed by introducing pressurized air (or pressurized air from an external tank) from the air outlet portion of the base member, but the present invention is not limited to this. For example, it is possible to introduce pressurized air from an air outlet to an external air tank at an arbitrary position. On the road location where the hole is placed, the road seat is airy. -13-1245713 (11) [Brief Description of the Drawings] FIG. 1 is a front sectional view showing an air dryer according to an embodiment of the present invention. Fig. 2 is a cross-sectional view showing a 7P; a regulator part including the air dryer of Fig. 1; Fig. J is an explanatory diagram (front view) showing a regulator exhaust passage provided with the air dryer of Fig. 1. Fig. 4 is an explanatory view (bottom view) showing a regulator exhaust passage provided with the air dryer of Fig. 1. Fig. 5 is an explanatory view showing a regulator exhaust passage provided with the air dryer of Fig. 1 (side view). Fig. 6 is a front sectional view showing a conventional air dryer. Fig. 7 is a cross-sectional view showing a regulator portion provided in a conventional air dryer. Fig. 8 is an explanatory view (front view) showing a regulator exhaust passage provided in a conventional air dryer. 〔Description of main component symbols〕 1 Base member 2 Drying section 5 a Desiccant 9 Drain valve 2 0 Pressure regulator -14-1251313 (12) 2 0 a Hollow 2〇b Air introduction path 2 2 Regulator piston 2 6 Exhaust Path 2 7 Vertical hole (exhaust hole) 2 7a Upper end 2 7 b Lower end
2 8配管 28a 入口 28b 出□ 29 托架 29a車體安裝面 2 9 b 壁部 2 9 c貫通孔 30車體2 8 Piping 28a Inlet 28b Out 29 Bracket 29a Car body mounting surface 2 9 b Wall 2 9 c Through hole 30 Car body
3 1凹部 3 2 肋部 -15-3 1 Recess 3 2 Rib -15-