JP5082055B2

JP5082055B2 - Compressed air dryer

Info

Publication number: JP5082055B2
Application number: JP2008027353A
Authority: JP
Inventors: 克典田中
Original assignee: Nabtesco Automotive Corp
Current assignee: Nabtesco Automotive Corp
Priority date: 2008-02-07
Filing date: 2008-02-07
Publication date: 2012-11-28
Anticipated expiration: 2028-02-07
Also published as: JP2009183882A

Description

本発明は、圧縮空気乾燥装置の支持基盤に備えたガバナーを小型化すると共に該ガバナーを収容した段差状収容孔に差圧設定用ピストン及び空気圧調整用ピストンを配置し、該ガバナーの作動品質や応答性及び耐久性を向上させる圧縮空気乾燥装置に関する。 The present invention reduces the size of the governor provided on the support base of the compressed air drying apparatus and arranges the differential pressure setting piston and the air pressure adjustment piston in the stepped accommodation hole that accommodates the governor. The present invention relates to a compressed air drying device that improves responsiveness and durability.

従来、この種の圧縮空気乾燥装置の技術の一例としては図４に示す特許第３７７１４５０号に係る特許公報に開示されている。これについて説明すれば、図４は圧縮空気乾燥装置２を適用した圧縮空気供給システムを示している。コンプレッサ１の吐出側に圧縮空気乾燥装置２を接続し、この圧縮空気乾燥装置２で乾燥された圧縮空気を作動機器例えば自動車のエアサスペンション装置等の空気溜であるメインタンク３に供給する構成であり、このメインタンク３に作動機器を接続している。この圧縮空気供給システムＡは、コンプレッサ１から吐出された圧縮空気内の湿気およびオイルミスト等を圧縮空気乾燥装置２で取り除いた後メインタンク３に蓄圧し、その圧縮空気を作動機器に供給するので、作動機器に湿気、オイルミストの流入を防止する。この圧縮空気供給システムＡに用いる圧縮空気乾燥装置２は、コンプレッサ１の吐出側に接続するインレットポート４とメインタンク３に接続するアウトレットポート５と、図４ないし図６に示すガバナー６と、ドレンバルブ７とを備えた基部材８と、この基部材８の上部に、乾燥剤９を充填した乾燥器１０と、この乾燥器１０と前記アウトレットポート５との間に配置したパージタンク１１とを設けた構成である。この圧縮空気乾燥装置２は、コンプレッサ１から吐出する圧縮空気がインレットポート４から流入すると、乾燥器１０を介してパージタンク１１からアウトレットポート５へ流れるとき、乾燥器１０の乾燥剤９が圧縮空気内の湿気を吸収する。
また、圧縮空気乾燥装置２のガバナー６は、アウトレットポート５の空気圧が受圧室６１に作用しガバナーピストン６２がコイルばね６３に逆らって押されてガバナー弁６４が開きドレンバルブ７を開弁させる。ドレンバルブ７が、開弁すると、コンプレッサ１の吐出側を大気に接続するアンロード運転にすると共に、乾燥器１０内の圧縮空気を急速に排出し、その後パージタンク１１の乾燥空気により乾燥剤９を再乾燥する。尚、ガバナー６のガバナーピストン６２は、ガバナー弁６４が開弁すると空気圧を受圧する面積が増加する構造であるから、ガバナーピストン６２の復帰する空気圧力が作動時の空気圧力より低い値である。したがって、メインタンク３の空気圧力が一定の幅内に制御される。このように、ガバナー６の作動から復帰までの間に、圧縮空気乾燥装置２の乾燥動作とアンロード動作を継続する。６５はコイルばね室である。 Conventionally, an example of the technology of this type of compressed air drying apparatus is disclosed in a patent publication related to Japanese Patent No. 3771450 shown in FIG. Describing this, FIG. 4 shows a compressed air supply system to which the compressed air drying device 2 is applied. A compressed air drying device 2 is connected to the discharge side of the compressor 1 and the compressed air dried by the compressed air drying device 2 is supplied to a main tank 3 which is an air reservoir of an operating device such as an air suspension device of an automobile. Yes, operating equipment is connected to the main tank 3. The compressed air supply system A removes moisture and oil mist from the compressed air discharged from the compressor 1 with the compressed air drying device 2 and then accumulates the pressure in the main tank 3 and supplies the compressed air to the operating equipment. Prevents moisture and oil mist from flowing into the operating equipment. The compressed air drying apparatus 2 used in the compressed air supply system A includes an inlet port 4 connected to the discharge side of the compressor 1, an outlet port 5 connected to the main tank 3, a governor 6 shown in FIGS. 4 to 6, and a drain. A base member 8 provided with a valve 7, a dryer 10 filled with a desiccant 9 on the base member 8, and a purge tank 11 disposed between the dryer 10 and the outlet port 5. This is a configuration provided. In this compressed air drying device 2, when compressed air discharged from the compressor 1 flows from the inlet port 4, the desiccant 9 of the dryer 10 is compressed air when flowing from the purge tank 11 to the outlet port 5 through the dryer 10. Absorbs moisture inside.
In the governor 6 of the compressed air drying device 2, the air pressure of the outlet port 5 acts on the pressure receiving chamber 61, the governor piston 62 is pushed against the coil spring 63, the governor valve 64 is opened, and the drain valve 7 is opened. When the drain valve 7 is opened, the unloading operation is performed in which the discharge side of the compressor 1 is connected to the atmosphere, the compressed air in the dryer 10 is rapidly discharged, and then the desiccant 9 is dried by the dry air in the purge tank 11. Re-dry. Since the governor piston 62 of the governor 6 has a structure in which the area for receiving air pressure increases when the governor valve 64 is opened, the return air pressure of the governor piston 62 is lower than the air pressure during operation. Therefore, the air pressure in the main tank 3 is controlled within a certain width. In this way, the drying operation and the unloading operation of the compressed air drying device 2 are continued between the operation and return of the governor 6. 65 is a coil spring chamber.

また、図５においては、前記ガバナー６が基部材８内に装着された構造を示すものであり、圧縮空気乾燥装置２は、基部材８と、この基部材８の上部に乾燥剤９を充填した乾燥器１０と、その周囲に形成したパージタンク１１を固定してあり、インレットポート４と、アウトレットポート５およびドレンバルブ７と、前記ガバナー６を備えている。また、圧縮空気乾燥装置２は、取り付けフランジ１２で基部材８が下方に位置させて車両等に取り付けられる。このインレットポート４から供給されるコンプレッサ１の吐出圧縮空気は、圧力室１３に流入し、孔１３ａからフィルター１４を経て孔１４ａから乾燥器１０に流入し、乾燥剤９で除湿され、乾燥器１０の逆止弁１５及び乾燥剤９、再生用の絞り１５ａを介してパージタンク１１へ流入する。パージタンク１１に流入した圧縮空気は、逆止弁１５からアウトレットポート５を経てメインタンク３に流入する。ドレンバルブ７は、圧力室１３と、排気管１６を有する排気通路との間に設けてあり、このドレンバルブ７は、排気弁７ａの開弁により、インレットポート４に供給される圧縮空気は、圧力室１３から排気弁７ａを介して、サイレンサー１７から排気管１６を経て大気に放出され、コンプレッサ１をアンロード運転にすると共に、圧縮空気乾燥装置２の乾燥剤９を乾燥する。図中１８は逆止弁である。 FIG. 5 shows a structure in which the governor 6 is mounted in a base member 8. The compressed air drying apparatus 2 fills the base member 8 and a desiccant 9 on the base member 8. The dryer 10 and the purge tank 11 formed around the dryer 10 are fixed, and include an inlet port 4, an outlet port 5, a drain valve 7, and the governor 6. The compressed air drying device 2 is attached to a vehicle or the like with the base member 8 positioned below the mounting flange 12. The discharge compressed air of the compressor 1 supplied from the inlet port 4 flows into the pressure chamber 13, passes through the filter 13 from the hole 13 a, flows into the dryer 10 through the hole 14 a, is dehumidified with the desiccant 9, and then is dried. The check valve 15, the desiccant 9, and the regeneration throttle 15 a flow into the purge tank 11. The compressed air flowing into the purge tank 11 flows into the main tank 3 from the check valve 15 through the outlet port 5. The drain valve 7 is provided between the pressure chamber 13 and the exhaust passage having the exhaust pipe 16. The drain valve 7 is configured such that the compressed air supplied to the inlet port 4 by opening the exhaust valve 7a is: The pressure chamber 13 is discharged into the atmosphere from the silencer 17 through the exhaust pipe 7a through the exhaust pipe 16, and the compressor 1 is unloaded and the desiccant 9 of the compressed air drying device 2 is dried. In the figure, 18 is a check valve.

そして、上述したガバナー６により圧縮空気が圧縮空気乾燥装置２のアウトレットポート５の通路５ａを通じてガバナーピストン６２の下面に流送される。圧縮空気の空気圧が所定値以下、つまりメインタンク３の空気圧の入込み位置（下限値）となれば、該ガバナーピストン６２はコイルばね６３によって下方に、つまり図６では右側方向に押し下げられた状態であり、ガバナー弁６４は閉止され、コントロールポート６２ａの圧縮空気は排気ステム６２ｂ内を流送してコイルばね室６５から排気孔６ａを経て大気に放出する。
また、アウトレットポート５の圧縮空気の空気圧、つまりメインタンク３の空気圧が上昇すればガバナーピストン６２は前記と逆方向、つまり図６では左側方向に押し上げられる。前記排気ステム６２ｂはガバナー弁６４に閉止され、コントロールポート６２ａが遮断される。そして、アウトレットポート５の圧縮空気の空気圧が上昇し、所定値以上、つまりメインタンク３の空気圧の切放し位置（上限値）となれば、該ガバナーピストン６２はコイルばね６３を圧縮して移動し、排気ステム６２ｂによって該ガバナー弁６４は開放する。そこでアウトレットポート５の圧縮空気はガバナー弁６４の隣接隙間を流送しコントロールポート６２ａより圧縮空気乾燥装置２のドレンバルブ７の上面へ流送し、該ドレンバルブ７を開放する。図６に於いて、６４ａはガバナー弁スプリング、６ｃはコイルばね６３を支承するフランジである。６ｄはコイルばね６３を巻装する中心軸、６ｅはガバナーピストン６２及びコイルばね６３を装置した収容孔壁面である。
特許第３７７１４５０号に係る特許公報 Then, the above-described governor 6 sends compressed air to the lower surface of the governor piston 62 through the passage 5 a of the outlet port 5 of the compressed air drying device 2. When the compressed air pressure is equal to or lower than the predetermined value, that is, when the air pressure enters the main tank 3 (lower limit value), the governor piston 62 is pushed down by the coil spring 63, that is, in the state of being pushed rightward in FIG. The governor valve 64 is closed, and the compressed air of the control port 62a flows through the exhaust stem 62b and is discharged from the coil spring chamber 65 to the atmosphere through the exhaust hole 6a.
Further, when the air pressure of the compressed air at the outlet port 5, that is, the air pressure of the main tank 3 increases, the governor piston 62 is pushed up in the opposite direction, that is, in the left direction in FIG. The exhaust stem 62b is closed by the governor valve 64, and the control port 62a is shut off. When the air pressure of the compressed air at the outlet port 5 rises and exceeds a predetermined value, that is, when the air pressure of the main tank 3 is released (upper limit value), the governor piston 62 moves by compressing the coil spring 63, The governor valve 64 is opened by the exhaust stem 62b. Therefore, the compressed air in the outlet port 5 flows through the gap adjacent to the governor valve 64 and flows from the control port 62a to the upper surface of the drain valve 7 of the compressed air drying device 2, and the drain valve 7 is opened. In FIG. 6, 64 a is a governor valve spring, and 6 c is a flange for supporting the coil spring 63. 6d is a central axis around which the coil spring 63 is wound, and 6e is a wall surface of the accommodation hole in which the governor piston 62 and the coil spring 63 are installed.
Patent Gazette related to Japanese Patent No. 3771450

従来の技術に於ける前述した圧縮空気乾燥装置は上述した構成、作用であるので次の問題点が存在した。すなわち、圧縮空気乾燥装置のガバナーの働きはアウトレットポート５の圧縮空気の空気圧の差圧により収容したガバナーピストン６２を動作させて行うものであり、これは図６に示すようにガバナーピストン６２を収容した収容孔壁面６ｄ、６ｄ間に設定した大径長Ｄ１とガバナーピストン６２の小径長Ｄ２による圧縮空気受圧面積の差により流送する圧縮空気の差圧を設定して制御するものである。このようにガバナーピストン６２の形状や収容孔壁面６ｄ、６ｄ間が予め設定され、該圧縮空気受圧面積が小さくガバナー６の動作に限界が生じ円滑性を欠き、また各種仕様のメインタンク３に適応させることができないという品質上の問題点があった。加えて、該収容孔壁面６ｄ、６ｄ間が例えば、大径長Ｄ１＝４０．３（ｍｍ）、小径長Ｄ２＝４０（ｍｍ）に設定し、比較的大型となりそのためコイルばね６３の径やその重量が大きく容積がかさみ、ガバナー６やガバナー収容孔が長大となるという問題点があった。またガバナー６内の収容孔に収容する例えば排気ステム６２ｂ、ガバナー弁６４及びガバナー弁スプリング６４ａ等各種部品も多くかつ交換不能であり複雑かつ耐久性にも問題点があった。 The above-described compressed air drying apparatus in the prior art has the following problems because it has the above-described configuration and operation. In other words, the governor of the compressed air drying device operates by operating the governor piston 62 accommodated by the differential pressure of the compressed air pressure at the outlet port 5, which accommodates the governor piston 62 as shown in FIG. The differential pressure of the compressed air to be sent is set and controlled by the difference in the compressed air pressure receiving area due to the large diameter length D1 set between the housing hole wall surfaces 6d and 6d and the small diameter length D2 of the governor piston 62. As described above, the shape of the governor piston 62 and the space between the housing hole wall surfaces 6d and 6d are preset, the compressed air pressure receiving area is small, the operation of the governor 6 is limited, the smoothness is lacking, and it is applicable to the main tank 3 of various specifications. There was a problem of quality that could not be made. In addition, the space between the housing hole wall surfaces 6d and 6d is set to a large diameter length D1 = 40.3 (mm) and a small diameter length D2 = 40 (mm), for example. There is a problem that the weight is large and the volume is large, and the governor 6 and the governor housing hole are long. Further, there are many various parts such as the exhaust stem 62b, the governor valve 64, and the governor valve spring 64a that are accommodated in the accommodation hole in the governor 6, and cannot be replaced, and there is a problem in complexity and durability.

本発明に係る圧縮空気乾燥装置は叙上の問題点を解決すべく発明したものであり、該圧縮空気乾燥装置に装着したガバナーに差圧設定用ピストン及び空気圧調整用ピストンの２つのピストンを配置し、該ガバナーの応答性を高め作動品質や耐久性の向上及び部品を交換可能にした新規な圧縮空気乾燥装置を提供することを目的としたものであって、次の構成、手段から成立する。 The compressed air drying apparatus according to the present invention was invented to solve the above-mentioned problems, and two pistons, a differential pressure setting piston and an air pressure adjusting piston, are arranged on a governor attached to the compressed air drying apparatus. The object of the present invention is to provide a new compressed air drying device that improves the responsiveness of the governor, improves the operation quality and durability, and allows parts to be replaced. .

すなわち、請求項１記載の発明によれば、コンプレッサの吐出側に接続するインレットポートと、コントロールポートと、メインタンクに接続するアウトレットポートと、大空間部及び中空間部、小空間部が一連に形成された段差状収容孔と、該小空間部と該アウトレットポートとに連通するアウトレットポート通路と、該小空間部と該コントロールポートとに連通するコントロールポート通路と、該大空間部に連通する排出孔と、該段差状収容孔に配置されたガバナーと、該アウトレットポート通路に連通して圧縮空気によりドレン弁を開弁するドレンバルブ装置とを備えた支持基盤と、該支持基盤の上に配置され、乾燥剤が充填された乾燥容器と、該支持基盤の上に配置された部屋であって、該乾燥容器を覆うように設けられたパージタンクを有する圧縮空気乾燥装置であって、前記ガバナーは、前記大空間部の開口に覆設したガバナー蓋と、該ガバナー蓋の内側に固定した支持部品と、該支持部品に一端を支承されたコイルばねと、前記大空間部と同径長で前記大空間部内に進退自在に収容され、前記コイルばねの他端部を内部に収容する円筒型ホルダと、該円筒型ホルダの上面に接しており、前記中空間部と同径長であって、内孔を有し、進退自在に配置された差圧設定用ピストンと、該差圧設定用ピストンの内孔内に収容され、円盤状の下部と該円盤状の下部よりも径小の円柱状の上部とから形成される空気圧調整用ピストンと、前記小空間部と同径長の外径を有し、前記小空間部内に固定された上部と、前記中空間内に収容され、前記差圧設定用ピストンの内孔よりも径小の下部からなるガバナー受座とからなり、前記ガバナー受座には、その中心軸に沿って上部から下部に延びる大通路が形成されており、該ガバナー受座の上部には、該大通路から前記アウトレットポート通路に連通するドレン弁側小通路と、該大通路から前記コントロールポート通路に連通するコントロールポート側小通路が形成されており、該ガバナー受座の下部には、該大通路の下部末端に連通し、前記空気圧調整用ピストンの上部と同径長で前記空気圧調整用ピストンの上部を進退自在に収容するガバナー受座の挿入孔と、前記中空間部と該大通路とを連通する微小通路が設けられており、前記差圧設定用ピストンの内孔には、前記ガバナー受座の下部が収容されていて、該差圧設定用ピストンの内孔壁面と該ガバナー受座下部外周面との間にはシール部材が介装されており、圧縮空気の乾燥時には、前記シール部材は前記微小通路の前記中空間側の出口より上にあって圧縮空気が前記コントロールポート通路から前記コントロールポート側小通路、前記大通路、前記微小通路、前記差圧設定用ピストンの内孔、前記大空間部、前記排出孔の順に流れて大気に放出され、前記乾燥剤の再生時には、前記差圧設定用ピストンが下に移動することによって、前記シール部材が前記微小通路の前記中空間側の出口より下に移動し、前記圧縮空気により前記差圧設定用ピストンが前記円筒型ホルダーを前記コイルばねを圧縮する方向に押し下げ、それによって圧縮空気が前記大通路から前記ドレン弁側小通路の順に流れてドレンバルブ装置のピストンに流送されるようになり、前記ドレン弁を開放することを特徴とする。 That is, according to the first aspect of the invention, an inlet port connected to the discharge side of the compressor, and a control port, an outlet port connected to the main tank, the large space portion and the middle space, the small space part series The formed step-shaped accommodation hole, the outlet port passage communicating with the small space portion and the outlet port, the control port passage communicating with the small space portion and the control port, and communicating with the large space portion A support base comprising a discharge hole, a governor disposed in the stepped accommodation hole, and a drain valve device that communicates with the outlet port passage and opens the drain valve with compressed air ; and on the support base A drying container that is disposed and filled with a desiccant, and a purger that is disposed on the support base and is provided to cover the drying container. A compressed air drying device having a click, the governor, the a governor lid was Kutsugae設the opening of the large space portion, a support part fixed to the inside of the governor lid and is supported at one end to the support part a coil spring, wherein the retractably accommodated in the large space portion in the large space portion the same diameter length, and a cylindrical holder for accommodating the other end of the coil spring therein, in contact with the upper surface of the cylindrical holder cage, wherein in a space portion of the same diameter length, bore anda retractably disposed differential pressure setting piston, housed in the bore of the piston for differential pressure setting, disk-shaped a tire pressure regulating piston which is formed from a cylindrical upper portion of smaller diameter than the lower portion of the lower portion and the disc-shaped, has an outer diameter of the pocket part and the diameter length, in the pocket part A fixed upper portion, and is accommodated in the middle space, than the inner hole of the differential pressure setting piston. Consists of a governor seat consisting of a lower portion of the small, the said governor seat, and a large passage is formed extending from the upper portion to the lower portion along its central axis, the upper portion of the governor seat, said large passage A drain valve side small passage communicating with the outlet port passage and a control port side small passage communicating with the control port passage from the large passage, and a lower portion of the large passage is formed at a lower portion of the governor seat. An insertion hole of a governor seat that communicates with the lower end and has the same diameter and length as the upper part of the air pressure adjusting piston and that can be moved forward and backward, and the intermediate space part and the large passage communicate with each other. A lower passage of the governor seat is accommodated in an inner hole of the differential pressure setting piston, and an inner wall surface of the differential pressure setting piston and an outer periphery of the lower portion of the governor seat A sealing member is interposed between the surface and the compressed air, and when the compressed air is dried, the sealing member is above the outlet on the middle space side of the micro passage so that the compressed air is supplied from the control port passage to the control. The port side small passage, the large passage, the minute passage, the inner hole of the differential pressure setting piston, the large space portion, and the discharge hole flow in this order and are released into the atmosphere. When the setting piston moves downward, the seal member moves below the outlet on the middle space side of the minute passage, and the compressed pressure causes the differential pressure setting piston to move the cylindrical holder to the coil spring. The compressed air flows in the order from the large passage to the drain valve side small passage and is sent to the piston of the drain valve device. Characterized in that it opens the Ren valve.

請求項２記載の発明によれば、前記差圧設定用ピストン、前記空気圧調整用ピストン及びガバナー受座の構成がメインタンクの空気圧の入込み位置（下限値）に於いて前記ガバナーに流送する圧縮空気の空気圧の受圧面積Ｓ１＝（Ｄ３^２−Ｄ４^２）・π／４となり、かつメインタンクの空気圧の切放し位置（上限値）に於いてガバナーに流送する圧縮空気の空気圧の受圧面積Ｓ２＝（Ｄ３^２−Ｄ４^２＋Ｄ５^２）・π／４となること、但しＤ３は差圧設定用ピストンの外周径長又は段差状収容孔の中空間部の孔径長、Ｄ４はガバナー受座の空気圧調整用ピストンを進退自在に収容する部分の外周径長、Ｄ５は空気圧調整用ピストンの下部面の外周径長又はガバナー受座の挿入孔の内径長であることを特徴とする。 According to a second aspect of the present invention, the configuration of the differential pressure setting piston, the air pressure adjusting piston, and the governor receiving seat is compressed so as to flow to the governor at the air pressure entry position (lower limit value) of the main tank. The air pressure receiving area S1 = (D3 ² −D4 ² ) · π / 4, and the air pressure receiving area S2 of the compressed air flowing to the governor at the air pressure release position (upper limit) of the main tank = (D3 ² −D4 ² + D5 ² ) · π / 4, where D3 is the outer diameter of the differential pressure setting piston or the hole length of the middle space of the step-like accommodation hole, and D4 is the air pressure adjustment of the governor seat D5 is the outer diameter of the lower surface of the air pressure adjusting piston or the inner diameter of the insertion hole of the governor seat.

本発明に係る圧縮空気乾燥装置は上述した構成を有するので次の効果がある。 Since the compressed air drying apparatus according to the present invention has the above-described configuration, it has the following effects.

すなわち、請求項１に記載した本発明によれば、コンプレッサの吐出側に接続するインレットポートと、コントロールポートと、メインタンクに接続するアウトレットポートと、大空間部及び中空間部、小空間部が一連に形成された段差状収容孔と、該小空間部と該アウトレットポートとに連通するアウトレットポート通路と、該小空間部と該コントロールポートとに連通するコントロールポート通路と、該大空間部に連通する排出孔と、該段差状収容孔に配置されたガバナーと、該アウトレットポート通路に連通して圧縮空気によりドレン弁を開弁するドレンバルブ装置とを備えた支持基盤と、該支持基盤の上に配置され、乾燥剤が充填された乾燥容器と、該支持基盤の上に配置された部屋であって、該乾燥容器を覆うように設けられたパージタンクを有する圧縮空気乾燥装置であって、前記ガバナーは、前記大空間部の開口に覆設したガバナー蓋と、該ガバナー蓋の内側に固定した支持部品と、該支持部品に一端を支承されたコイルばねと、前記大空間部と同径長で前記大空間部内に進退自在に収容され、前記コイルばねの他端部を内部に収容する円筒型ホルダと、該円筒型ホルダの上面に接しており、前記中空間部と同径長であって、内孔を有し、進退自在に配置された差圧設定用ピストンと、該差圧設定用ピストンの内孔内に収容され、円盤状の下部と該円盤状の下部よりも径小の円柱状の上部とから形成される空気圧調整用ピストンと、前記小空間部と同径長の外径を有し、前記小空間部内に固定された上部と、前記中空間内に収容され、前記差圧設定用ピストンの内孔よりも径小の下部からなるガバナー受座とからなり、前記ガバナー受座には、その中心軸に沿って上部から下部に延びる大通路が形成されており、該ガバナー受座の上部には、該大通路から前記アウトレットポート通路に連通するドレン弁側小通路と、該大通路から前記コントロールポート通路に連通するコントロールポート側小通路が形成されており、該ガバナー受座の下部には、該大通路の下部末端に連通し、前記空気圧調整用ピストンの上部と同径長で前記空気圧調整用ピストンの上部を進退自在に収容するガバナー受座の挿入孔と、前記中空間部と該大通路とを連通する微小通路が設けられており、前記差圧設定用ピストンの内孔には、前記ガバナー受座の下部が収容されていて、該差圧設定用ピストンの内孔壁面と該ガバナー受座下部外周面との間にはシール部材が介装されており、圧縮空気の乾燥時には、前記シール部材は前記微小通路の前記中空間側の出口より上にあって圧縮空気が前記コントロールポート通路から前記コントロールポート側小通路、前記大通路、前記微小通路、前記差圧設定用ピストンの内孔、前記大空間部、前記排出孔の順に流れて大気に放出され、前記乾燥剤の再生時には、前記差圧設定用ピストンが下に移動することによって、前記シール部材が前記微小通路の前記中空間側の出口より下に移動し、前記圧縮空気により前記差圧設定用ピストンが前記円筒型ホルダーを前記コイルばねを圧縮する方向に押し下げ、それによって圧縮空気が前記大通路から前記ドレン弁側小通路の順に流れてドレンバルブ装置のピストンに流送されるようになり、前記ドレン弁を開放することを特徴とする圧縮空気乾燥装置を提供する。
而して、圧縮空気による空気圧の入込み位置（下限値）や切放し位置（上限値）は上記圧縮空気の受圧面積Ｓ１、Ｓ２を変化させることにより適宜設定可能となり本願発明に係るガバナー又は圧縮空気乾燥装置によれば従来のようなガバナー弁や排気ステム等の部品を必要とせず、特に２つのピストン、つまり差圧設定用ピストン及び空気圧調整用ピストンを配置したのでその構造を小型化し簡素にして耐久性を高めその動作を円滑かつ応答性を高めると共に高品質なガバナーを提供することができるという効果がある。また、当該圧縮空気乾燥装置は自動車等の車両に搭載されるエアサスペンションシステム、エアブレーキ装置等各種機器に利用できるという効果がある。 That is, according to the present invention as set forth in claim 1, an inlet port connected to the discharge side of the compressor, and a control port, an outlet port connected to the main tank, the large space portion and the middle space, the small space part Stepped accommodation holes formed in series, an outlet port passage communicating with the small space portion and the outlet port, a control port passage communicating with the small space portion and the control port, and the large space portion A support base comprising a communicating discharge hole, a governor disposed in the stepped accommodation hole, a drain valve device communicating with the outlet port passage and opening a drain valve with compressed air ; A drying container disposed above and filled with a desiccant; and a room disposed on the support base and provided to cover the drying container. A compressed air drying apparatus having a Jitanku, the governor, the a governor lid was Kutsugae設the opening of the large space portion, a support part fixed to the inside of the governor lid and is supported at one end to the support part a coil spring, wherein the retractably accommodated in the large space portion in the large space portion the same diameter length, and a cylindrical holder for accommodating the other end of the coil spring therein, in contact with the upper surface of the cylindrical holder cage, wherein in a space portion of the same diameter length, bore anda retractably disposed differential pressure setting piston, housed in the bore of the piston for differential pressure setting, disk-shaped a tire pressure regulating piston which is formed from a cylindrical upper portion of smaller diameter than the lower portion of the lower portion and the disc-shaped, has an outer diameter of the pocket part and the diameter length, in the pocket part A fixed upper part and an inner hole of the differential pressure setting piston housed in the middle space Consists of a governor seat including the lower of the remote small diameter, the said governor seat, and a large passage is formed extending from the upper portion to the lower portion along its central axis, the upper portion of the governor seat, A drain valve side small passage communicating from the large passage to the outlet port passage and a control port side small passage communicating from the large passage to the control port passage are formed, and the lower part of the governor seat has the An insertion hole of a governor seat that communicates with the lower end of the large passage and has the same diameter and length as the upper portion of the air pressure adjusting piston and is capable of advancing and retracting, and the intermediate space portion and the large passage And a lower part of the governor seat is accommodated in the inner hole of the differential pressure setting piston, and the inner hole wall surface of the differential pressure setting piston and the governor receiving part are accommodated in the inner hole of the differential pressure setting piston. Sitting down A sealing member is interposed between the outer peripheral surface of the portion, and when the compressed air is dried, the sealing member is above the outlet on the middle space side of the minute passage so that the compressed air is supplied from the control port passage. The control port side small passage, the large passage, the minute passage, the inner hole of the differential pressure setting piston, the large space portion, and the discharge hole are sequentially discharged into the atmosphere, and when the drying agent is regenerated, When the differential pressure setting piston moves downward, the seal member moves below the outlet on the intermediate space side of the micro passage, and the differential pressure setting piston causes the cylindrical holder to move the cylindrical holder by the compressed air. The coil spring is pushed down in the compressing direction, so that the compressed air flows in the order from the large passage to the drain valve side small passage and is sent to the piston of the drain valve device. Providing compressed air drying apparatus characterized by opening the drain valve.
Thus, the air pressure entry position (lower limit value) and the cut-off position (upper limit value) by the compressed air can be set as appropriate by changing the pressure receiving areas S1 and S2 of the compressed air. According to the device, parts such as the conventional governor valve and exhaust stem are not required, and in particular, two pistons, that is, the differential pressure setting piston and the air pressure adjustment piston are arranged, so the structure is miniaturized and simplified. As a result, it is possible to provide a high-quality governor while improving the performance and smoothing the operation and improving the responsiveness. Further, the compressed air drying device can be used for various devices such as an air suspension system and an air brake device mounted on a vehicle such as an automobile.

請求項２に記載した本発明によれば、前記差圧設定用ピストン、前記空気圧調整用ピストン及びガバナー受座の構成がメインタンクの空気圧の入込み位置（下限値）に於いて前記ガバナーに流送する圧縮空気の空気圧の受圧面積Ｓ１＝（Ｄ３^２−Ｄ４^２）・π／４となり、かつメインタンクの空気圧の切放し位置（上限値）に於いてガバナーに流送する圧縮空気の空気圧の受圧面積Ｓ２＝（Ｄ３^２−Ｄ４^２＋Ｄ５^２）・π／４となること、但しＤ３は差圧設定用ピストンの外周径長又は段差状収容孔の中空間部の孔径長、Ｄ４はガバナー受座の空気圧調整用ピストンを進退自在に収容する部分の外周径長、Ｄ５は空気圧調整用ピストンの下部面の外周径長又はガバナー受座の挿入孔の内径長であることを特徴とする請求項１記載の圧縮空気乾燥装置を提供する。
而して、差圧設定用ピストンや空気圧調整用ピストンの形状・寸法を適宜変更することにより圧縮空気の受圧面積を変化させ圧縮空気量を調整し各種の小型のガバナー等に適用させることができ、ガバナー内の部品点数を大幅に削減できるという効果がある。 According to the second aspect of the present invention, the differential pressure setting piston, the air pressure adjusting piston, and the governor seat are configured to flow to the governor at the air pressure entry position (lower limit value) of the main tank. Compressed air pressure receiving area S1 = (D3 ² −D4 ² ) · π / 4, and the air pressure receiving area of the compressed air sent to the governor at the air pressure release position (upper limit value) of the main tank S2 = (D3 ² −D4 ² + D5 ² ) · π / 4, where D3 is the outer diameter of the differential pressure setting piston or the hole diameter length of the middle space of the step-like accommodation hole, and D4 is the governor seat 2. An outer peripheral diameter length of a portion for accommodating the air pressure adjusting piston so as to be movable forward and backward, and D5 is an outer peripheral diameter length of a lower surface of the air pressure adjusting piston or an inner diameter length of an insertion hole of a governor seat. Compression To provide a vapor drying apparatus.
Thus, by appropriately changing the shape and dimensions of the differential pressure setting piston and the air pressure adjusting piston, the pressure receiving area of the compressed air can be changed to adjust the amount of compressed air and can be applied to various small governors. The number of parts in the governor can be greatly reduced.

以下、本発明に係る圧縮空気乾燥装置に於ける実施の形態について添付図面に基づき詳細に説明する。
図１は本発明に係る圧縮空気乾燥装置の実施の形態の一例を示す垂直断面図である。
図２は当該圧縮空気乾燥装置に装着したガバナーの動作を示す図面であって、収容したコイルばねが伸張した状態を示す断面図である。
図３当該圧縮空気乾燥装置に装着したガバナーの動作を示す図面であって、収容したコイルばねが圧縮した状態を示す断面図である。 Embodiments of a compressed air drying apparatus according to the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a vertical sectional view showing an example of an embodiment of a compressed air drying apparatus according to the present invention.
FIG. 2 is a cross-sectional view showing the operation of the governor attached to the compressed air drying apparatus and showing a state where the housed coil spring is extended.
3 is a drawing showing the operation of the governor attached to the compressed air drying device, is a cross-sectional view showing a state in which the accommodated coil spring is compressed.

圧縮空気乾燥装置１９は、例えば大概してコンプレッサの吐出側が接続するインレットポート（図示せず）とメインタンク（図示せず）に接続するアウトレットポート２０と、ガバナー２１と、及びドレンバルブ装置２２とを有した例えばアルミニウムやその合金の金属成形品等でなる支持基盤２３と、この支持基盤２３の例えば上部に、乾燥剤２４を充填した乾燥容器２５と、この乾燥容器２５と前記アウトレットポート２０との間に配置したパージタンク（外側カバー）２６とを設けた構成である。 The compressed air drying device 19 includes, for example, an inlet port (not shown) generally connected to the discharge side of the compressor, an outlet port 20 connected to a main tank (not shown), a governor 21, and a drain valve device 22. For example, a support base 23 made of, for example, a metal molded product of aluminum or an alloy thereof, a drying container 25 filled with a desiccant 24 on, for example, an upper portion of the support base 23, and the drying container 25 and the outlet port 20. A purge tank (outer cover) 26 disposed between them is provided.

この圧縮空気乾燥装置１９は、コンプレッサから吐出する圧縮空気がインレットポートから流入すると、乾燥容器２５を介してパージタンク２６からアウトレットポート２０へ流れるとき、乾燥容器２５の乾燥剤２４が圧縮空気内の湿気を吸収する。そして圧縮空気乾燥装置１９のガバナー２１は支持基盤２３に装着され、具体的には支持基盤２３に大空間部、中空間部及び小空間部を一連に形成した段差状収容孔２３ａに配置されている。アウトレットポート２０に流送する圧縮空気の空気圧がアウトレットポート通路２１ａに圧送し差圧設定用ピストン２１ｂが従来のコイルばねより小径長かつ軽量のコイルばね２１ｃに逆らって押し下げるとドレンバルブ装置２２のドレン弁２２ａを開弁させる。ドレン弁２２ａが開弁するとコンプレッサの吐出側を大気に接続するアンロード運転にすると共に、乾燥容器２５内の圧縮空気を急速に排出し、その後パージタンク２６の乾燥圧縮空気により乾燥剤２４を乾燥する。このように、ガバナー２１の作動から復帰までの間に、圧縮空気乾燥装置１９の乾燥動作とアンロード動作を継続する。 When the compressed air discharged from the compressor flows into the compressed air drying device 19 from the inlet port, when the compressed air discharged from the compressor flows from the purge tank 26 to the outlet port 20 via the drying container 25, the desiccant 24 in the drying container 25 is contained in the compressed air. Absorbs moisture. The governor 21 of the compressed air drying device 19 is mounted on a support base 23, and specifically, is disposed in a stepped accommodation hole 23a in which a large space portion, a middle space portion and a small space portion are formed in the support base 23 in series. Yes. Air pressure outlet port passage 21a to the pumping and differential pressure setting piston 21b of the compressed air Nagareoku the outlet port 20 is lowered pushed against the coil spring 21c of the small diameter length and lighter than conventional coil springs drain valve 22 to open the drain valve 22 a. With drain valve 22 a is to unload operation for connecting the opening the discharge side of the compressor to the atmosphere, the compressed air in the drying vessel 25 rapidly discharged, then desiccant 24 by dry compressed air purge tank 26 dry. As described above, the drying operation and the unloading operation of the compressed air drying device 19 are continued between the operation and return of the governor 21.

また、圧縮空気乾燥装置１９は、例えば取り付けフランジで支持基盤２３を該圧縮空気乾燥装置１９の下方に位置させて車両等の車体に取り付けられる。そして前記インレットポートから供給される前記コンプレッサから吐出される圧縮空気は、フィルター２７を経て孔２７ａから乾燥容器２５に流入する。このフィルター２７により圧縮空気は圧縮オイルやダストが除去され乾燥剤２４で除湿される。除湿され、乾燥した圧縮空気は乾燥容器２５の逆止弁２５ａを開放し通路２５ｂからパージタンク２６の部屋２６ａに貯留され、残部は支持基盤２３に備えた逆止弁２８からアウトレットポート２０を通してメインタンクに貯留する。
図中２１ｄは前記支持基盤２３に設けてある排出孔、２２ｂはドレンバルブ装置２２のドレン弁２２ａの開閉を司るピストン、２９は該排出孔２１ｄから排出される圧縮空気量を制御するものであって前記支持基盤２３に設けてあり排出孔２１ｄの出口側に配置された弁装置である。 Further, compressed air drying device 19, for example, be a support base 23 in the mounting flange is positioned below the compressed air drying apparatus 19 mounted on the vehicle body such as a vehicle. The compressed air discharged from the compressor is supplied from the inlet port flows into the drying vessel 25 from the hole 27a through the filter 27. This filter 27 removes compressed oil and dust from the compressed air and dehumidifies with the desiccant 24. The compressed air that has been dehumidified and dried opens the check valve 25a of the drying container 25 and is stored in the chamber 26a of the purge tank 26 through the passage 25b, and the remaining part passes through the outlet port 20 from the check valve 28 provided on the support base 23. Store in tank.
Discharge hole figure 21d is that is provided on the support base 23, 22b is a piston which controls opening and closing of the drain valve 22a of the drain valve 22, 29 be one that controls the amount of compressed air discharged from the exhaust Deana 21d The valve device is provided on the support base 23 and arranged on the outlet side of the discharge hole 21d .

また、ドレン弁２２ａは乾燥剤２４を乾燥処理する時には閉じているが、メインタンク内の圧力が所定値に達するとガバナー２１からの指令信号によってピストン２２ｂを下げドレン弁２２ａを開く。水分やオイルを含むドレンはドレン弁２２ａの開閉に応じて、圧縮空気と一緒に勢いよく外部へ放出される。そのため放出に伴う騒音を低減するため、ドレン弁２２ａの排出口にはサイレンサ３０が設けられている。 The drain valve 22a is closed when the desiccant 24 is dried, but when the pressure in the main tank reaches a predetermined value, the piston 22b is lowered by the command signal from the governor 21 and the drain valve 22a is opened. The drain containing moisture and oil is released to the outside together with the compressed air according to the opening / closing of the drain valve 22a. Therefore, a silencer 30 is provided at the discharge port of the drain valve 22a in order to reduce the noise accompanying the discharge.

次に図２及び図３に基づき本発明に係る圧縮空気乾燥装置に装着したガバナー２１の内部構造や動作等を説明し、本発明を明らかにする。
前記支持基盤２３は収容孔、具体的には段差状収容孔２３ａを形成し、この段差状収容孔２３ａ内にガバナー２１を備える。該支持基盤２３はコンプレッサの吐出側に接続するインレットポートと、コントロールポートと、メインタンクに接続するアウトレットポート２０と、大空間部及び中空間部、小空間部が一連に形成された段差状収容孔２３ａと、該小空間部と該アウトレットポート２０とに連通するアウトレットポート通路２１ａと、該小空間部と該コントロールポートとに連通するコントロールポート通路２１ｍと、該大空間部に連通する排出孔２１ｄと、該段差状収容孔２３ａに配置されたガバナー２１と、該アウトレットポート通路２１ａに連通して圧縮空気によりドレン弁２２ａを開弁するドレンバルブ装置２２とを備える。該ガバナー２１は前記段差状収容孔２３ａの大空間部の開口に覆設したガバナー蓋２１ｗと、該ガバナー蓋２１ｗの内側に固定した支持部品２１ｖと、一端を該支持部品２１ｖに支承されかつ他端を円筒型ホルダ２１ｅの内底面に支承されたコイルばね２１ｃと、前記大空間部と同径長で前記大空間部内に進退自在に収容され、前記コイルばねの他端部を内部に収容する円筒型ホルダと、該円筒型ホルダの上面に接しており、前記中空間部と同径長であって、内孔を有し、進退自在に配置された差圧設定用ピストンと、該差圧設定用ピストンの内孔内に収容され、円盤状の下部と該円盤状の下部よりも径小の円柱状の上部とから形成される空気圧調整用ピストンと、前記小空間部と同径長の外径を有し、前記小空間部内に固定された上部と、前記中空間内に収容され、前記差圧設定用ピストンの内孔よりも径小の下部からなる。そして該段差状収容孔２３ａ内のガバナー２１は摺動自在であって該円筒型ホルダ２１ｅの上面に接合・配置した差圧設定用ピストン２１ｂ、該差圧設定用ピストン２１ｂの内孔２１ｗに収容した空気圧調整用ピストン２１ｆ、及び該空気圧調整用ピストン２１ｆの上部２１ｇを進退自在に収容したガバナー受座２１ｈを有しそれぞれ配置している。該差圧設定用ピストン２１ｂの内孔２１ｗは該差圧設定用ピストン２１ｂの中心軸であって前記ガバナー受座２１ｈの下部を収容する径長でなる。 Next, based on FIG.2 and FIG.3, the internal structure, operation | movement, etc. of the governor 21 with which the compressed air drying apparatus based on this invention was mounted | worn are demonstrated, and this invention is clarified.
The support base 23 forms an accommodation hole, specifically, a step-like accommodation hole 23a, and a governor 21 is provided in the step-like accommodation hole 23a. The support base 23 is an inlet port connected to the discharge side of the compressor, and a control port, an outlet port 20 connected to the main tank, the large space portion and the middle space, the small space part is stepped housing formed in a series A hole 23a, an outlet port passage 21a communicating with the small space portion and the outlet port 20, a control port passage 21m communicating with the small space portion and the control port, and a discharge hole communicating with the large space portion 21d, a governor 21 disposed in the stepped accommodation hole 23a, and a drain valve device 22 communicating with the outlet port passage 21a and opening the drain valve 22a with compressed air. The governor 21 includes a governor lid 21w that covers the opening of the large space of the stepped accommodation hole 23a, a support component 21v that is fixed to the inside of the governor lid 21w, one end supported by the support component 21v, and the like. A coil spring 21c whose end is supported on the inner bottom surface of the cylindrical holder 21e, and the same length and length as the large space portion are accommodated in the large space portion, and the other end portion of the coil spring is accommodated therein. A cylindrical holder, a differential pressure setting piston that is in contact with the upper surface of the cylindrical holder, has the same diameter as the middle space , has an inner hole, and is disposed so as to freely advance and retract; and the differential pressure It is accommodated in the bore of the setting piston, and a pneumatic adjusting piston which is formed from a cylindrical upper portion of smaller diameter than the disc-shaped lower portion and the disc-shaped lower portion, the said pocket part An upper portion having a long outer diameter and fixed in the small space; Serial in is accommodated in the space, it consists of a lower portion of smaller diameter than the inner bore of the differential pressure setting piston. And said stepped receiving hole 23a in the governor 21 is slidable in a by the cylindrical holder 21e differential pressure setting piston 21b joined and arranged in the upper surface of the inner hole 21w of the differential pressure setting piston 21b receiving the tire pressure regulating piston 21f, and are disposed respectively having a governor seat 21h was retractably accommodating the upper portion 21g of the air pressure adjusting piston 21f. The inner hole 21w of the differential pressure setting piston 21b is a central axis of the differential pressure setting piston 21b and has a diameter long enough to accommodate the lower portion of the governor seat 21h.

前記ガバナー受座２１ｈは下部及び該下部より径大の上部でなる円柱形状で形成されてあって、ガバナー受座２１ｈの上部は前記アウトレットポート通路２１ａと連通するドレン弁側小通路２１ｉを有し、このドレン弁側小通路２１ｉに連通すると共に該ガバナー受座２１ｈの上部から下部に渉って中心軸に沿って形成した大通路２１ｊと、該大通路２１ｊに連通すると共にガバナー受座２１ｈの下部は前記空気圧調整用ピストン２１ｆの上部２１ｇを進退自在に挿置すべく該空気圧調整用ピストン２１ｆの上部と同径長の挿入孔２１ｋをガバナー受座２１ｈの中心軸に有している。また該ガバナー受座２１ｈの下部は前記差圧設定用ピストン２１ｂの内孔２１ｗに介在され、該ガバナー受座２１ｈの上部は小空間部と同径長であって段差状収容孔２３ａに於ける図２に示す右側の前記小空間部に固定されている。該差圧設定用ピストン２１ｂの内孔２１ｗの壁面と前記ガバナー受座２１ｈの下部外周面との間にはシール部材２１ｚを介装させている。そして、該ガバナー受座２１ｈの上部は前記大通路２１ｊに連通するコントロールポート側小通路２１ｎ及びドレン弁側小通路２１ｉを形成してある。該コントロールポート側小通路２１ｎはコントロールポート３１に連通するコントロールポート通路２１ｍに連通してある。該ドレン弁側小通路２１ｉはドレン弁側アウトレットポート２０Ａに連通するアウトレットポート通路２１ａに連通してある。前記コントロールポート３１のコントロールポート通路２１ｍに連通する小通路２１ｎを大通路２１ｊと連通して穿孔している。また前記ガバナー受座２１ｈの下部には前記大通路２１ｊ及び差圧設定用ピストン２１ｂの内孔２１ｗに連通する微小通路２１ｐを形成している。 The governor seat 21h is each other are formed in a circular column shape that such a top portion of the large diameter than the lower part and the lower part, drain valve side small an upper portion of the governor seat 21h communicating with the outlet port passage 21a A passage 21i that communicates with the drain valve side small passage 21i, a large passage 21j formed along the central axis extending from the upper portion to the lower portion of the governor seat 21h, and the large passage 21j. the central axis of the governor seat 21h of the lower part the pneumatic insertion of the upper portion and the diameter length of the air pressure adjusting piston 21f so as to interpose retractably on portion 21g of the adjusting piston 21f hole 21k governor seat 21h It has to. The lower portion of the governor seat 21h is interposed inner hole 21w of the differential pressure setting piston 21b, the upper portion of the governor seat 21h is stepwise housing hole 23a a pocket part of the same vector length 2 is fixed to the small space portion on the right side shown in FIG. A seal member 21z is interposed between the wall surface of the inner hole 21w of the differential pressure setting piston 21b and the lower outer peripheral surface of the governor seat 21h. The upper portion of the governor seat 21h is formed with a control port side small passage 21n and a drain valve side small passage 21i communicating with the large passage 21j. The control port side small passage 21 n communicates with a control port passage 21 m communicating with the control port 31. The drain valve side small passage 21i communicates with an outlet port passage 21a communicating with the drain valve side outlet port 20A. The small passage 21n which communicates with the control port passage 21m of the control port 31 are drilled in communication with the atmospheric passage 21j. A small passage 21p communicating with the large passage 21j and the inner hole 21w of the differential pressure setting piston 21b is formed in the lower portion of the governor seat 21h.

前記空気圧調整用ピストン２１ｆは側面形状から見て略Ｔ字形であって、下部２１ｑが円盤状に、上部２１ｇが円柱状にそれぞれ形成されている。この下部２１ｑの径長が差圧設定用ピストン２１ｂの内孔２１ｗの径長より短小に形成されている。該差圧設定用ピストン２１ｂは前記段差状収容孔２３ａの中空間部と同径長であり可動自在に挿置されている。円筒型ホルダ２１ｅは大空間部と同径長であって底部２１ｓに中心孔２１ｒを形成すると共にその側壁部２１ｔは段差状収容孔２３ａに於ける図２に示す左側の大空間部に摺動自在に挿置されている。２１ｕはガバナー蓋であり、該段差状収容孔２３ａの開口（左側の大空間部の開口）に覆設している。そして、蓋２１ｕの内側に支持部品２１ｖを固定しコイルばね２１ｃの一端を支承している。図中３２は固定ボルトでありガバナー蓋２１ｕを支持基盤２３に固定している。 The tire pressure regulating piston 21f is a substantially T-shape when viewed from the side shape, the lower portion 21q is in a disc shape, the upper portion 21g are formed in a cylindrical shape. The diameter length of the lower portion 21q is formed so short and small than diameter length of the inner hole 21w of the differential pressure setting piston 21b. The differential pressure setting piston 21b has the same diameter and length as the middle space of the step-shaped accommodation hole 23a and is movably inserted. Cylindrical holder 21e is sliding in the large space portion of the left the side wall portion 21t is shown in in Figure 2 stepwise housing hole 23a so as to form a central hole 21r and a large space portion and the radius vector length in the bottom 21s It is inserted freely. 21u is a governor lid, and covers the opening of the stepped accommodation hole 23a (the opening of the large space portion on the left side). And the support component 21v is fixed inside the lid | cover 21u, and the end of the coil spring 21c is supported. In the figure, 32 is a fixing bolt which fixes the governor lid 21 u to the support base 23.

そして、上述した本発明に係るガバナー２１により圧縮空気が圧縮空気乾燥装置１９のアウトレットポート２０のアウトレットポート通路２１ａを通じてガバナー受座２１ｈのドレン弁側小通路２１ｉ及び大通路２１ｊを経由して空気圧調整用ピストン２１ｆの上部２１ｇに流送される。圧縮空気の空気圧が所定値以下、つまりメインタンクの空気圧の入込み位置（下限値）となれば、該空気圧調整用ピストン２１ｆ及び差圧設定用ピストン２１ｂはコイルばね２１ｃによって上方に、つまり図２では右側方向に押し上げられたままの状態であり、円筒型ホルダ２１ｅは静止した状態である。圧縮空気の乾燥時には、前記シール部材２１ｚは前記微小通路２１ｐの前記中空間側の出口より上にあって圧縮空気が前記コントロールポート通路２１ｍから前記コントロールポート側小通路２１ｎ、前記大通路２１ｊ、前記微小通路２１ｐ、前記差圧設定用ピストンの内孔２１ｗ、前記大空間部を経て排出孔２１ｄから弁装置２９を介して大気に放出する。 Then, the governor 21 according to the present invention described above adjusts the pressure of compressed air through the outlet port passage 21a of the outlet port 20 of the compressed air drying device 19 through the drain valve side small passage 21i and the large passage 21j of the governor seat 21h. It is Nagareoku above portion 21g of use piston 21f. Air pressure of the compressed air is less than a predetermined value, i.e. if the-inserting position of the air pressure in the main tank (lower limit), the air pressure adjusting piston 21f and the differential pressure setting piston 21b on the upper side by the coil spring 21c, that is 2 in the state of the left upper down is pushed to the right, the cylindrical holder 21e is a stationary state. At the time of drying compressed air, the seal member 21z is above the outlet on the middle space side of the minute passage 21p so that the compressed air passes from the control port passage 21m to the control port side small passage 21n, the large passage 21j, The fine passage 21p, the inner hole 21w of the differential pressure setting piston, and the large space portion are discharged from the discharge hole 21d through the valve device 29 to the atmosphere.

このときメインタンクの空気圧の入込み位置（下限値）に於いてはガバナー２１に流送する圧縮空気の空気圧が関与する部材としては差圧設定用ピストン２１ｂであり、その受圧面積Ｓ１は次の式で成立する。すなわち受圧面積Ｓ１＝（Ｄ３^２−Ｄ４^２）・π／４となる。
そこで従来の技術に比較し当該受圧面積Ｓ１はガバナー２１が小型化するうえに広い面積を確保でき、該ガバナー２１の作動の応答性を向上させ品質も高めるという利点がある。
ここでＤ３は差圧設定用ピストン２１ｂの外周径長、又は段差状収容孔２３ａの中空間部の孔径長であって例えばその設定仕様を径長を２５（ｍｍ）程度に小さく設定できる。Ｄ４はガバナー受座２１ｈの空気圧調整用ピストン２１ｆを進退自在に収容する部分の外周径長である。 At this time, at the air pressure entry position (lower limit value) of the main tank, the member involved in the air pressure of the compressed air sent to the governor 21 is the differential pressure setting piston 21b, and the pressure receiving area S1 is expressed by the following equation. It is established by. That is, the pressure receiving area S1 = (D3 ² −D4 ² ) · π / 4.
Therefore, the pressure receiving area S1 has an advantage that the governor 21 can be downsized and a wide area can be secured as compared with the conventional technique, and the responsiveness of the operation of the governor 21 is improved and the quality is improved.
Here, D3 is the outer peripheral diameter length of the differential pressure setting piston 21b or the hole diameter length of the middle space portion of the step-shaped accommodation hole 23a. For example, the setting specification can be set to a small diameter length of about 25 (mm). D4 is the length of the outer circumference of the portion of the governor seat 21h that accommodates the air pressure adjusting piston 21f so as to freely advance and retract.

また、アウトレットポート２０の圧縮空気の空気圧、つまりメインタンクの空気圧が上昇し、図３に示すように円筒型ホルダ２１ｅは前記と逆方向、つまり図３では左側方向に押し下げられる。すなわち、アウトレットポート２０の圧縮空気の空気圧が上昇し、所定値以上、つまりメインタンクの空気圧の切放し位置（上限値）となれば、該圧縮空気はアウトレットポート２０のアウトレットポート通路２１ａを通じて、ガバナー受座２１ｈのドレン弁側小通路２１ｉ及び大通路２１ｊを経由して空気圧調整用ピストン２１ｆの上部２１ｇの上部面２１ｙすなわち圧縮空気の受圧面に流送される。また、該圧縮空気は差圧設定用ピストン２１ｂの上面２１ｘつまり圧縮空気の受圧面に介入し空気圧調整用ピストン２１ｆ及び差圧設定用ピストン２１ｂを下方、つまり図３では左側方向に押し下げ、コイルばね２１ｃを圧縮して移動する。そこで乾燥剤２４の再生時には前記差圧設定用ピストン２１ｂが下に移動することによって、前記シール部材２１ｚが前記微小通路２１ｐの前記中空間側の出口より下に移動し、前記圧縮空気により前記差圧設定用ピストン２１ｂが前記円筒型ホルダー２１ｅを前記コイルばね２１ｃを圧縮する方向に押し下げ、それによって圧縮空気が前記大通路２１ｊから前記ドレン弁側小通路２１ｉの順に流れて圧縮空気乾燥装置１９のドレンバルブ装置２２のピストン２２ｂへ流送し、ドレン弁２２ａを開放する。 Further, the air pressure of the compressed air outlet port 20, and increase the air pressure that is the main tank, the circular tubular holder 21e as shown in FIG. 3 the opposite direction, is press down in the left direction in FIG. 3 that is. That is, when the air pressure of the compressed air at the outlet port 20 rises and exceeds a predetermined value, that is, when the air pressure of the main tank is released (upper limit value), the compressed air is received by the governor through the outlet port passage 21a of the outlet port 20. is Nagareoku to the pressure receiving surface of the upper stepped surface 21y i.e. compressed air of the upper portion 21g of the via drain valve side small passages 21i and large passage 21j of the seat 21h tire pressure regulating piston 21f. Further, the compressed air is lowered down the intervening tire pressure regulating piston 21f and the differential pressure setting piston 21b to the pressure receiving surface of the upper surface 21x clogging compressed air differential pressure setting piston 21b lower side, i.e. in the left direction in FIG. 3 The coil spring 21c is compressed and moved. Therefore, when the desiccant 24 is regenerated, the differential pressure setting piston 21b moves downward, so that the seal member 21z moves below the outlet on the intermediate space side of the minute passage 21p, and the difference is caused by the compressed air. The pressure setting piston 21b pushes down the cylindrical holder 21e in the direction of compressing the coil spring 21c, whereby compressed air flows in the order from the large passage 21j to the drain valve side small passage 21i . Flowing to the piston 22b of the drain valve device 22, the drain valve 22a is opened.

このときメインタンクの空気圧の切放し位置（上限値）に於いてはガバナー２１に流送する圧縮空気の空気圧が関与する部材としては差圧設定用ピストン２１ｂ及び空気圧調整用ピストン２１ｆであり、その受圧面積Ｓ２は次の式で成立する。すなわち受圧面積Ｓ２＝（Ｄ３^２−Ｄ４^２＋Ｄ５^２）・π／４となる。ここでＤ５は空気圧調整用ピストン２１ｆの下部２１ｇ面２１ｙの外周径長又はガバナー受座２１ｈの挿入孔２１ｋの内径長である。 At this time, at the position where the air pressure of the main tank is cut off (upper limit value), the members involved in the air pressure of the compressed air sent to the governor 21 are the differential pressure setting piston 21b and the air pressure adjusting piston 21f. The area S2 is established by the following equation. That is, the pressure receiving area S2 = (D3 ² −D4 ² + D5 ² ) · π / 4. Here, D5 is the outer peripheral diameter length of the lower 21g surface 21y of the air pressure adjusting piston 21f or the inner diameter length of the insertion hole 21k of the governor receiving seat 21h.

そこで従来の技術に比較し当該受圧面積Ｓ２はガバナー２１が小型化するうえに広い面積を確保でき、さらに圧縮空気の受圧面積Ｓ２として空気圧調整用ピストン２１ｆの下部２１ｇ面２１ｙの面積が加わりさらに該ガバナー２１の作動の応答性を向上させ品質も高めるという利点がある。 Therefore, the pressure receiving area S2 is smaller than that of the conventional technology and can secure a large area, and the compressed air pressure receiving area S2 is further increased by the area of the lower 21g surface 21y of the air pressure adjusting piston 21f. There is an advantage that the responsiveness of the operation of the governor 21 is improved and the quality is improved.

かくして、ガバナー２１は上記の動作を繰返す。上述した圧縮空気による空気圧の入込み位置（下限値）や切放し位置（上限値）は上記圧縮空気の受圧面積Ｓ１、Ｓ２を変化させることにより適宜設定可能となり本願発明に係るガバナー２１又は圧縮空気乾燥装置１９によれば従来のようなガバナー弁や排気ステム等の部品を必要とせず、特に２つのピストン、つまり差圧設定用ピストン２１ｂ及び空気圧調整用ピストン２１ｆを配置したのでその構造を小型化し簡素にして耐久性を高めその動作を円滑にし、応答性を高めると共に高品質なガバナーを提供することができる。また、当該圧縮空気乾燥装置１９は自動車等の車両に搭載されるエアサスペンションシステム、エアブレーキ装置等各種機器に利用できる。 Thus, the governor 21 repeats the above operation. The above-described compressed air entry position (lower limit value) and release position (upper limit value) can be set as appropriate by changing the pressure receiving areas S1 and S2 of the compressed air, and the governor 21 or compressed air drying apparatus according to the present invention. 19 does not require a conventional governor valve, exhaust stem, or other parts, and in particular, two pistons, that is, a differential pressure setting piston 21b and an air pressure adjusting piston 21f are arranged, so that the structure is reduced in size and simplified. Thus, durability can be enhanced, the operation thereof can be smoothed, responsiveness can be enhanced, and a high-quality governor can be provided. The compressed air drying device 19 can be used for various devices such as an air suspension system and an air brake device mounted on a vehicle such as an automobile.

本発明に係る圧縮空気乾燥装置の実施の形態の一例を示す垂直断面図である。It is a vertical sectional view showing an example of an embodiment of a compressed air drying device concerning the present invention. 本発明に係る圧縮空気乾燥装置に装着したガバナーの動作を示す図面であって、収容したコイルばねが伸張した状態を示す断面図である。It is drawing which shows operation | movement of the governor with which the compressed air drying apparatus concerning this invention was mounted | worn, Comprising: It is sectional drawing which shows the state which the accommodated coil spring expanded. 本発明に係る圧縮空気乾燥装置に装着したガバナーの動作を示す図面であって、収容したコイルばねが圧縮した状態を示す断面図である。It is drawing which shows operation | movement of the governor with which the compressed air drying apparatus concerning this invention was mounted | worn, Comprising: It is sectional drawing which shows the state which the accommodated coil spring compressed. 従来の技術に於ける圧縮空気乾燥装置を適用した圧縮空気供給システムを示す構成図である。It is a block diagram which shows the compressed air supply system to which the compressed air drying apparatus in a prior art is applied. 従来の技術に於ける圧縮空気供給システムに適用した圧縮空気乾燥装置の要部垂直断面図である。It is a principal part vertical sectional view of the compressed air drying device applied to the compressed air supply system in the prior art. 従来の技術に於ける圧縮空気乾燥装置に装着したガバナーの構成を示す拡大垂直断面図である。It is an expanded vertical sectional view which shows the structure of the governor with which the compressed air drying apparatus in the prior art was mounted | worn.

１９圧縮空気乾燥装置
２０アウトレットポート
２１ガバナー
２１ａアウトレットポート通路
２１ｂ差圧設定用ピストン
２１ｃコイルばね
２１ｄ排出孔
２１ｅ円筒型ホルダ
２１ｆ空気圧調整用ピストン
２１ｇ空気圧調整用ピストンの上部
２１ｈガバナー受座
２１ｉドレン弁側小通路
２１ｊ大通路
２１ｋガバナー受座の挿入孔
２１ｍコントロールポート通路
２１ｎコントロールポート側小通路
２１ｐ微小通路
２１ｑ空気圧調整用ピストンの上部
２１ｒ中心孔
２１ｓ底部
２１ｔ側壁部
２１ｕガバナー蓋
２１ｖ支持部品
２１ｗ差圧設定用ピストンの内孔
２１ｘ差圧設定用ピストンの上面
２１ｙ空気圧調整用ピストンの上部面
２１ｚシール部材
２２ドレンバルブ装置
２２ａドレン弁
２２ｂピストン
２３支持基盤
２３ａ段差状収容孔
２４乾燥剤
２５乾燥容器
２５ａ乾燥容器の逆止弁
２５ｂ通路
２６パージタンク
２６ａパージタンクの部屋
２７フィルター
２７ａ孔
２８逆止弁
２９弁装置
３０サイレンサ
３１コントロールポート
３２固定ボルト 19 compressed air drying apparatus 20 the outlet port 21 governor 21a outlet port passage 21b the differential pressure setting piston 21c coil spring 21d discharge hole 21e cylindrical holder 21f tire pressure regulating piston 21g pneumatic adjusting piston of the upper portion 21h governor seat 21i drain valve side small passage 21j large channel 21k governor seat of the insertion hole 21m control port passage 21n control port side small passage 21p small passage 21q pneumatic upper 21r center of the adjusting piston bore 21s bottom 21t side wall 21u governor lid 21v support piece 21w difference on the upper surface 21y tire pressure regulating piston bore 21x differential pressure setting piston of the piston for pressure setting portion plane
21z seal member 22 drain valve device 22a drain valve 22b piston 23 support base 23a stepped accommodation hole 24 desiccant 25 drying container 25a drying container check valve 25b passage 26 purge tank 26a purge tank chamber 27 filter 27a hole 28 check Valve 29 Valve device 30 Silencer 31 Control port 32 Fixing bolt

Claims

An inlet port connected to the discharge side of the compressor, and a control port, an outlet port connected to the main tank, a stepped receiving hole large space portion and the middle space, the small space formed in series, the small space An outlet port passage communicating with the outlet portion and the outlet port, a control port passage communicating with the small space portion and the control port, a discharge hole communicating with the large space portion, and the stepped accommodation hole. A support base comprising a governor, a drain valve device communicating with the outlet port passage and opening a drain valve with compressed air , and a drying container disposed on the support base and filled with a desiccant. , a room disposed on said support base, a compressed air drying apparatus having a purge tank provided so as to cover the drying vessel, Serial governor, said the governor lid was Kutsugae設the opening of the large space portion, a support part fixed to the inside of the governor lid, and a coil spring which is supported at one end to the support part, the large space portion with the same diameter the length is retractably accommodated in the large space portion, and a cylindrical holder for accommodating the other end of the coil spring therein, in contact with the upper surface of the cylindrical holder, in the in the space portion and the radius vector length there have an inner hole, and retractably disposed differential pressure setting piston, housed in the bore of the piston for differential pressure setting, than a disc-shaped lower portion and the disc-shaped lower portion a tire pressure regulating piston which is formed from a cylindrical upper portion of the small diameter, has an outer diameter of the pocket part and the diameter length, the upper fixed to the small space part, into said space is accommodated, I and a governor seat consisting of a lower portion of smaller diameter than the inner bore of the differential pressure setting piston , The said governor seat, and a large passage is formed extending from the upper portion to the lower portion along its central axis, the upper portion of the governor seat, drain valve side communicating from the large passageway to said outlet port passage A small passage and a small passage on the control port side communicating with the control port passage from the large passage are formed. The lower portion of the governor seat communicates with a lower end of the large passage, and the air pressure adjusting piston An insertion hole of a governor receiving seat having the same diameter and length as the upper portion of the air pressure adjustment piston, and a minute passage communicating the intermediate space portion with the large passage is provided. A lower portion of the governor seat is accommodated in the inner hole of the pressure setting piston, and a seal member is interposed between the inner hole wall surface of the differential pressure setting piston and the outer peripheral surface of the lower portion of the governor seat. Has been ,
When the compressed air is dried, the seal member is above the outlet on the medium space side of the micro passage, and the compressed air is transferred from the control port passage to the control port side small passage, the large passage, the micro passage, the difference. The pressure setting piston flows in the order of the inner hole of the pressure setting piston, the large space portion, and the discharge hole, and is released into the atmosphere. When the drying agent is regenerated, the differential pressure setting piston moves downward, thereby The minute passage moves downward from the outlet on the middle space side, and the compressed air causes the differential pressure setting piston to push down the cylindrical holder in the direction of compressing the coil spring, so that the compressed air flows into the large passage. come to be Nagareoku the piston of the drain valve device flows in order of the drain valve side small passage from the compressed air, characterized by opening the drain valve Drying apparatus.

The structure of the differential pressure setting piston, the air pressure adjusting piston and the governor seat is the pressure receiving area S1 = (D3) of the compressed air sent to the governor at the air pressure entry position (lower limit value) of the main tank. ²⁻ D4 ² ) · π / 4, and the pressure receiving area S2 = (D3 ² −D4 ² + D5 ² ) · of the compressed air sent to the governor at the main tank air pressure release position (upper limit value) The compressed air drying apparatus according to claim 1, wherein π / 4.
However, D3 is the outer diameter of the differential pressure setting piston or the hole diameter length D4 of the intermediate space portion of the step-like accommodation hole is the outer diameter D5 of the portion of the governor seat that accommodates the air pressure adjustment piston so as to be able to move forward and backward. The outer diameter of the lower surface of the piston or the inner diameter of the insertion hole of the governor seat