JP2006194152A - Air preparatory purification device for internal combustion engine - Google Patents

Air preparatory purification device for internal combustion engine Download PDF

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JP2006194152A
JP2006194152A JP2005006654A JP2005006654A JP2006194152A JP 2006194152 A JP2006194152 A JP 2006194152A JP 2005006654 A JP2005006654 A JP 2005006654A JP 2005006654 A JP2005006654 A JP 2005006654A JP 2006194152 A JP2006194152 A JP 2006194152A
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air
dust
discharge port
purification device
dust discharge
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Kenji Nakano
賢二 中野
Hisato Osawa
久人 大澤
Hiromichi Kawasaki
博路 川崎
Tatsumi Uejima
達巳 植島
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Kioritz Corp
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Kioritz Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an air preparatory purification device for an internal combustion engine in which an air filter installed in an intake system of an engine can be extended in the cycle of cleaning or exchanging. <P>SOLUTION: The air preparatory purification device is provided with a main body (11) composed of a funnel-shaped part (14) arranged at the upstream side of an intake system air filter (10) of the internal combustion engine (100), and installed consecutively in a cylindrical part (12) with a panel (15) and the lower end of the cylindrical part (12), an air introducing pipe (16) installed in the upper part of the cylindrical part (12) along the tangential direction, an air delivery pipe (17) suspended in the center of the panel (15) for introducing air (a) introduced into the main body (11) into the air filter (10), and a dust discharge port (18) installed in the lower part of the funnel-shaped part (14). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、内燃エンジンの吸気系に配設される空気浄化装置に係り、特に、エアーフィルタの吸気上流側に配備する空気予浄化装置に関する。   The present invention relates to an air purification device disposed in an intake system of an internal combustion engine, and more particularly to an air prepurification device disposed on an intake upstream side of an air filter.

従来より、内燃エンジンの吸気系には、気化器等に浄化した空気を供給するため、例えば、筒状のエアーフィルタからなるエアークリーナ（空気浄化装置）が配備されている。前記エアーフィルタは、その外周から内周方向に通過する空気中からダスト（塵埃）を捕捉して分離除去する機能を有している（例えば、下記特許文献１等を参照）。   Conventionally, in order to supply purified air to a carburetor or the like in an intake system of an internal combustion engine, for example, an air cleaner (air purification device) including a cylindrical air filter has been provided. The air filter has a function of capturing and separating dust from the air passing from the outer periphery to the inner periphery (see, for example, Patent Document 1 below).

実開昭６１−１４５８６８号公報Japanese Utility Model Publication No. 61-145868

前記した如くに、従来の内燃エンジン用空気浄化装置は、エアーフィルタのみで吸入空気を浄化するようにされているので、吸入空気中に含まれるダストの全てがエアーフィルタに付着することになる。エアーフィルタにダストが多量に付着すると、エアーフィルタが目詰まりを起こし、吸入空気量が減少してエンジン性能が低下する等の問題が生じる。そのため、従来においては、エアーフィルタを頻繁に清掃ないし交換しなければならないという問題があった。   As described above, since the conventional air purification device for an internal combustion engine purifies the intake air using only the air filter, all of the dust contained in the intake air adheres to the air filter. If a large amount of dust adheres to the air filter, the air filter will be clogged, and the intake air amount will decrease and the engine performance will deteriorate. Therefore, conventionally, there has been a problem that the air filter must be frequently cleaned or replaced.

本発明は、前記のような従来の問題を解消すべくなされたもので、その目的とするところは、エンジンの吸気系に備えられるエアーフィルタの清掃あるいは交換サイクルを延ばすことができるようにされた内燃エンジン用空気予浄化装置を提供することにある。   The present invention has been made to solve the conventional problems as described above, and the object of the present invention is to extend the cleaning or replacement cycle of the air filter provided in the intake system of the engine. An object of the present invention is to provide an air pre-purification device for an internal combustion engine.

前記の目的を達成すべく、本発明に係る内燃エンジン用空気予浄化装置は、内燃エンジンの吸気系エアーフィルタより上流側に配設されるもので、天板付き円筒状部及び該円筒状部の下端部に連設された漏斗状部からなる本体部と、前記円筒状部の上部にその接線方向に沿って設けられた空気導入管と、前記本体部内に導入された空気を前記エアーフィルタに導くべく前記天板の中央部に垂設された空気導出管と、前記漏斗状部の下部に設けられたダスト排出口と、を備える。   In order to achieve the above object, an air pre-purification device for an internal combustion engine according to the present invention is disposed upstream of an intake air filter of the internal combustion engine, and includes a cylindrical portion with a top plate and the cylindrical portion. A main body composed of a funnel-shaped portion continuously provided at the lower end of the air-conditioner, an air introduction pipe provided along the tangential direction at the upper portion of the cylindrical portion, and air introduced into the main body. An air outlet pipe that is suspended at the center of the top plate, and a dust discharge port that is provided at the bottom of the funnel-shaped portion.

好ましい態様では、前記ダスト排出口にダストキャッチタンクが取り付けられる。   In a preferred embodiment, a dust catch tank is attached to the dust discharge port.

前記ダストキャッチタンクは、好ましくは、前記ダスト排出口に着脱自在に取り付けられる。   The dust catch tank is preferably detachably attached to the dust discharge port.

他の好ましい態様では、前記ダストキャッチタンクに、ダスト排出用の手動開閉蓋が設けられる。   In another preferred embodiment, the dust catch tank is provided with a manual opening / closing lid for discharging dust.

他の別の好ましい態様では、前記本体部内のエンジン吸入負圧が大きいときには、前記ダスト排出口を自動的に閉じ、前記吸入負圧が小さいときには、前記ダスト排出口を自動的に開く圧力応動弁を備える。   In another preferred embodiment, the pressure responsive valve automatically closes the dust discharge port when the engine suction negative pressure in the main body is large, and automatically opens the dust discharge port when the suction negative pressure is small. Is provided.

前記圧力応動弁は、前記本体部内の前記エンジン吸入負圧に応動して前記ダスト排出口に接離してそれを開閉する弁体と、該弁体の開閉移動用案内部及びダスト排出用開口が形成され前記ダスト排出口に取り付けられる筐体部と、を備える。   The pressure responsive valve includes a valve body that opens and closes the dust discharge port in response to the engine suction negative pressure in the main body portion, an opening / closing movement guide portion of the valve body, and a dust discharge opening. A housing portion formed and attached to the dust discharge port.

この場合、好ましい態様では、前記弁体を前記ダスト排出口を開く方向に常時付勢する付勢部材を備える。   In this case, in a preferred embodiment, a biasing member that constantly biases the valve body in a direction to open the dust discharge port is provided.

本発明に係る内燃エンジン用空気予浄化装置は、エンジン運転中においては、ダストを含む空気（大気）が空気導入管から円筒状部の上部にその接線方向に沿って導入され、円筒状部から漏斗状部へ旋回しながら向かう。このとき、空気中のダストには遠心力が働くので、そのダストは、円筒状部の内壁面に沿うようにして漏斗状部に送られ、ダスト排出口から外部（ダストキャッチタンク等）へ排出される。この場合、円筒状部及び漏斗状部の内壁面付近のダスト密度は大きくなり、粗大ダストはその自重でダスト排出口へと落下し、かつ、微細ダストは、本体部の内壁面との摩擦及びダスト同士の摩擦で発生する静電気により、特に下流側に位置する漏斗状部の内壁面に付着する等して本体部の内部壁部に留まるので、円筒状部内の中心軸線近傍はダスト密度が極めて小さくなる。そのため、天板中央部に垂設された空気導出管にはダストがほとんど侵入せず、したがって、前記空気導出管から内燃エンジンのエアーフィルタへは、ダストをほとんど含まない、予浄化された空気が送られることになり、その結果、エアーフィルタの清掃あるいは交換のサイクルを、大幅に延ばすことができる。   In the air pre-purification device for an internal combustion engine according to the present invention, during operation of the engine, dust-containing air (atmosphere) is introduced along the tangential direction from the air introduction pipe to the upper portion of the cylindrical portion, and from the cylindrical portion. Head to the funnel while turning. At this time, since centrifugal force acts on the dust in the air, the dust is sent to the funnel-shaped portion along the inner wall surface of the cylindrical portion, and discharged from the dust discharge port to the outside (such as a dust catch tank). Is done. In this case, the dust density in the vicinity of the inner wall surface of the cylindrical portion and the funnel portion is increased, the coarse dust falls to the dust discharge port by its own weight, and the fine dust is rubbed with the inner wall surface of the main body portion. Due to static electricity generated by friction between dusts, it stays on the inner wall part of the main body part, especially by adhering to the inner wall surface of the funnel part located on the downstream side.Therefore, the dust density is extremely near the central axis in the cylindrical part. Get smaller. For this reason, almost no dust penetrates into the air outlet pipe suspended in the center of the top plate, and therefore, the air purified from the air outlet pipe to the air filter of the internal combustion engine hardly contains dust. As a result, the air filter cleaning or replacement cycle can be greatly extended.

以下、本発明の内燃エンジン用空気予浄化装置の実施形態を図面を参照しながら説明する。   Embodiments of an air pre-purification device for an internal combustion engine according to the present invention will be described below with reference to the drawings.

図１は、本発明に係る内燃エンジン用空気予浄化装置の一実施形態を示す概略断面図である。   FIG. 1 is a schematic sectional view showing an embodiment of an air pre-purification device for an internal combustion engine according to the present invention.

図示実施形態の空気予浄化装置１０Ａは、小型空冷２サイクルガソリンエンジン等の内燃エンジン１００の吸気系エアーフィルタ１０より上流側に配設されてプレエアークリーナとして機能するもので、天板１５付き円筒状部１２及び該円筒状部１２の下端部に連設された漏斗状部１４からなる本体部１１と、前記円筒状部１２の上部にその接線方向に沿って設けられた円筒パイプ状の空気導入管１６と（図２も参照）、前記本体部１１内に導入された空気（外気）ａを前記エアーフィルタ１０に導くべく、前記天板１５の中央部（中心軸線上）に内外に突出するように垂設された円筒パイプ状空気導出管１７と、前記漏斗状部１４の下部に設けられたダスト排出口１８と、を備える。   The air pre-purification device 10A of the illustrated embodiment is disposed upstream of the intake air filter 10 of the internal combustion engine 100 such as a small air-cooled two-cycle gasoline engine and functions as a pre-air cleaner. And a cylindrical pipe-like air provided on the upper part of the cylindrical part 12 along the tangential direction thereof, and a body part 11 comprising a funnel-like part 14 connected to the lower end part of the cylindrical part 12 and the cylindrical part 12 An introductory tube 16 (see also FIG. 2) and the air (outside air) a introduced into the main body 11 protrudes inward and outward at the central portion (on the central axis) of the top plate 15 to guide the air filter 10 to the air filter 10. A cylindrical pipe-like air outlet pipe 17 suspended so as to perform, and a dust discharge port 18 provided in the lower part of the funnel-like part 14.

以上の、天板１５付き円筒状部１２、漏斗状部１４、空気導入管１６、空気導出管１７、及びダスト排出口１８は、合成樹脂を素材として一体成形されている。   The cylindrical portion 12 with the top plate 15, the funnel portion 14, the air introduction pipe 16, the air outlet pipe 17, and the dust discharge port 18 are integrally formed using a synthetic resin as a material.

そして、前記ダスト排出口１８には、連結口２１付き直方体状のダストキャッチタンク２０が取り付けられている。より詳しくは、前記ダスト排出口１８の外周には雄ねじ部２６が形成され、前記連結口２１の内周には、前記雄ねじ部２６に螺合する雌ねじ部２７が形成されており、前記ダストキャッチタンク２０は、前記ダスト排出口１８にその連結口２１を螺合させることにより、着脱自在に取り付けられている。なお、前記ダストキャッチタンク２０を透明ないし半透明の合成樹脂材料で作製することにより、ダスト堆積状況や量を外部から容易に目視することができるので、前記ダストキャッチタンク２０を取り外して溜まったダストを捨てるべき時期を確実に知ることができ、一層好適である。   In addition, a rectangular parallelepiped dust catch tank 20 with a connection port 21 is attached to the dust discharge port 18. More specifically, a male screw portion 26 is formed on the outer periphery of the dust discharge port 18, and a female screw portion 27 that is screwed into the male screw portion 26 is formed on the inner periphery of the connection port 21. The tank 20 is detachably attached by screwing the connecting port 21 into the dust discharge port 18. In addition, since the dust catch tank 20 is made of a transparent or translucent synthetic resin material, the dust accumulation state and amount can be easily observed from the outside. Therefore, dust collected by removing the dust catch tank 20 is collected. This is more preferable because it is possible to surely know when to throw away.

このような構成とされた本実施形態の空気浄化装置１０は、エンジン運転中においては、そのエンジン吸入負圧により、図の白抜き矢印ａ、ｂ、ｃで示される如くに、ダストＤを含む空気が空気導入管１６の入口１６ａから出口１６ｂを介して円筒状部１２の上部にその接線方向に沿って導入（吸引）され（図２参照）、円筒状部１２から漏斗状部１４へ旋回しながら向かう。このとき、空気中のダストＤには遠心力が働くので、ダストＤは、円筒状部１２の内壁面に沿うようにして漏斗状部１４へと落下し、ダスト排出口１８からダストキャッチタンク２０内へ排出される。この場合、円筒状部１２及び漏斗状部１４の内壁面付近のダスト密度は大きくなり粗大ダストはその自重でダスト排出口１８へと落下し、かつ、微細ダストＤは、本体部１１の内壁面との摩擦及びダスト同士の摩擦で発生する静電気により、特に下流側に位置する漏斗状部１４の内壁面に付着する等して本体部１１の内周壁部に留まるので、円筒状部１２内の中心軸線近傍はダスト密度が極めて小さくなる。そのため、天板１５の中央部（中心軸線上）に垂設された空気導出管１７の入口１７ａにはダストＤがほとんど侵入せず、したがって、前記空気導出管１７の出口１７ｂからエアーフィルタ１０へは、ダストＤをほとんど含まない予浄化された空気が送られることになり（白抜き矢印Ｐ）、その結果、エアーフィルタの清掃あるいは交換のサイクルを、大幅延ばすことができる。   The air purification apparatus 10 of the present embodiment configured as described above includes dust D as indicated by the white arrows a, b, and c in the figure due to the engine suction negative pressure during engine operation. Air is introduced (sucked) along the tangential direction from the inlet 16a of the air introduction pipe 16 to the upper portion of the cylindrical portion 12 through the outlet 16b (see FIG. 2), and swirls from the cylindrical portion 12 to the funnel-shaped portion 14. Head while. At this time, since centrifugal force acts on the dust D in the air, the dust D falls to the funnel-shaped portion 14 along the inner wall surface of the cylindrical portion 12, and the dust catch tank 20 is discharged from the dust discharge port 18. It is discharged inside. In this case, the dust density in the vicinity of the inner wall surface of the cylindrical portion 12 and the funnel-shaped portion 14 is increased, the coarse dust falls to the dust discharge port 18 by its own weight, and the fine dust D is the inner wall surface of the main body portion 11. And stays on the inner peripheral wall portion of the main body portion 11 by adhering to the inner wall surface of the funnel-like portion 14 located on the downstream side due to static electricity generated by the friction between the main body portion 11 and the dust. The dust density is extremely small near the central axis. Therefore, the dust D hardly penetrates into the inlet 17a of the air outlet pipe 17 suspended from the central portion (on the central axis) of the top plate 15, and therefore the outlet 17b of the air outlet pipe 17 enters the air filter 10. The pre-purified air containing almost no dust D is sent (open arrow P), and as a result, the cleaning or replacement cycle of the air filter can be greatly extended.

なお、前記ダストキャッチタンク２０内に溜まったダストＤは、該ダストキャッチタンク２０を随時本体部１１から取り外して、その連結口２１から適当な場所に捨てるようにされるが、それに代えて、ダストキャッチタンク２０底部に、ダスト排出用の手動開閉蓋２０ａを設け、随時該手動開閉蓋２０ａを開いてダストを捨てるようにしてもよい。   The dust D accumulated in the dust catch tank 20 is removed from the main body 11 as needed and discarded from the connection port 21 to an appropriate place. A manual opening / closing lid 20a for discharging dust may be provided at the bottom of the catch tank 20, and the manual opening / closing lid 20a may be opened at any time to discard dust.

図３は、本発明に係る空気予浄化装置の他の実施形態を示す断面図である。図示実施形態の空気予浄化装置１０Ｂは、前記本体部１１の構成は前記実施形態と略同じであるが、前記ダストキャッチタンク２０に代えて、前記本体部１１内のエンジン吸入負圧が大きいとき（例えば、エンジン回転数が４０００〜５０００rpm以上のとき）には、前記ダスト導出口１８を自動的に閉じ、前記エンジン吸入負圧が小さいとき及びエンジン１００を運転していないときには、前記ダスト導出口１８を自動的に開く、圧力応動弁３０を備える。この圧力応動弁３０は、図３に加えて図４、図５を参照すればよくわかるように、前記本体部１１内の吸入負圧に応動して前記ダスト導出口１８の下端部（弁座）に接離してそれを開閉する所定の質量を有する円錐状の弁体３２と、該弁体３２の開閉作動時上下移動用の４本の柱状案内部３６及びダスト排出用開口３７が形成され前記ダスト排出口１８に取り付けられる筐体部３５と、を備えている。前記弁体３２には、前記４本の柱状案内部３６に緩く嵌合する切欠凹部３３が４カ所形成されており、また、前記筐体部３５の上部内周には、前記ダスト排出口１８外周に形成された雄ねじ部２６に螺合する雌ねじ部３８が形成されている。   FIG. 3 is a cross-sectional view showing another embodiment of the air pre-purification device according to the present invention. In the air pre-purification device 10B of the illustrated embodiment, the configuration of the main body 11 is substantially the same as that of the above-described embodiment, but when the engine suction negative pressure in the main body 11 is large instead of the dust catch tank 20. (For example, when the engine speed is 4000 to 5000 rpm or more), the dust outlet 18 is automatically closed. When the engine suction negative pressure is low and when the engine 100 is not operating, the dust outlet A pressure responsive valve 30 is provided that automatically opens 18. 4 and 5 in addition to FIG. 3, the pressure responsive valve 30 responds to the suction negative pressure in the main body 11 and is connected to the lower end of the dust outlet 18 (valve seat). ), And a conical valve body 32 having a predetermined mass for opening and closing it, and four columnar guide portions 36 and a dust discharge opening 37 for vertical movement when the valve body 32 is opened and closed. And a housing portion 35 attached to the dust discharge port 18. The valve body 32 is formed with four notch recesses 33 that loosely fit into the four columnar guide portions 36, and the dust discharge port 18 is formed at the upper inner periphery of the housing portion 35. A female screw portion 38 that is screwed into the male screw portion 26 formed on the outer periphery is formed.

このような構成とされた空気浄化装置１０Ｂにおいては、前記本体部１１内のエンジン吸入負圧が大きいとき（例えばエンジン回転数が４０００〜５０００rpm以上のとき）には、前記弁体３２が前記ダスト導出口１８側に吸引されてそれを自動的に閉じる。このときは、図３に示される如くにダストＤが弁体３２上に堆積される。それに対し、前記吸入負圧が小さいとき及びエンジン１００を運転していないときには、前記弁体３２がその自重で前記筐体部３５の底部３９まで落下して前記ダスト排出口１８を開く。これにより、図５に示される如くに、ダストＤがダスト排出用開口３７から外部に自動的に排出される。   In the air purifying device 10B configured as described above, when the engine suction negative pressure in the main body 11 is large (for example, when the engine speed is 4000 to 5000 rpm or more), the valve body 32 is the dust. It is sucked to the outlet 18 side and automatically closes. At this time, dust D is deposited on the valve body 32 as shown in FIG. On the other hand, when the suction negative pressure is small and when the engine 100 is not operating, the valve body 32 falls to the bottom 39 of the housing portion 35 by its own weight and opens the dust discharge port 18. Thereby, as shown in FIG. 5, the dust D is automatically discharged to the outside from the dust discharge opening 37.

なお、前記弁体３２の開動作をより確実にするため、図６に示される如くに、前記弁体３２を前記ダスト排出口１８を開く方向に常時付勢する付勢部材としての圧縮コイルばね４０あるいは引っ張りコイルばねを付設するようにしてもよい。   In order to make the opening operation of the valve body 32 more reliable, as shown in FIG. 6, a compression coil spring as an urging member that constantly urges the valve body 32 in the direction in which the dust discharge port 18 is opened. 40 or a tension coil spring may be provided.

本発明に係る内燃エンジン用空気予浄化装置の一実施形態を示す概略断面図。1 is a schematic cross-sectional view showing an embodiment of an air pre-purification device for an internal combustion engine according to the present invention. 図１のＩＩ−ＩＩ矢視断面図。II-II arrow sectional drawing of FIG. 本発明に係る内燃エンジン用空気予浄化装置の他の実施形態を示す概略断面図。The schematic sectional drawing which shows other embodiment of the air pre-purification apparatus for internal combustion engines which concerns on this invention. 図３のＩＶ−ＩＶ矢視断面図。IV-IV arrow sectional drawing of FIG. 図３に示される空気浄化装置の排出の説明に供される下部ダスト排出口部を示す正面図。The front view which shows the lower dust discharge port part used for description of discharge | emission of the air purification apparatus shown by FIG. 図３に示される空気浄化装置の変形例の説明に供される断面図。Sectional drawing with which it uses for description of the modification of the air purifying apparatus shown by FIG.

符号の説明Explanation of symbols

１０ エアーフィルタ
１０Ａ，１０Ｂ，１０Ｂ’ 空気予浄化装置
１１ 本体部
１２ 円筒状部
１４ 漏斗状部
１５ 天板
１６ 空気導入管
１７ 空気導出管
１８ ダスト排出口
２０ ダストキャッチタンク
２０ａ 手動開閉蓋
３０ 圧力応動弁
３２ 弁体
３５ 筐体部
３６ 弁体開閉移動用案内部
３７ ダスト排出用開口
４０ 圧縮コイルばね（付勢部材）
１００ 内燃エンジン
ａ、ｂ、ｃ 空気（外気） DESCRIPTION OF SYMBOLS 10 Air filter 10A, 10B, 10B 'Air prepurification apparatus 11 Main-body part 12 Cylindrical part 14 Funnel-like part 15 Top plate 16 Air introduction pipe 17 Air outlet pipe 18 Dust discharge port 20 Dust catch tank 20a Manual opening / closing lid 30 Pressure response Valve 32 Valve body 35 Housing portion 36 Valve body opening / closing movement guide portion 37 Dust discharge opening 40 Compression coil spring (biasing member)
100 Internal combustion engine a, b, c Air (outside air)

Claims (7)

内燃エンジン（１００）の吸気系エアーフィルタ（１０）より上流側に配設される空気予浄化装置（１０Ａ，１０Ｂ，１０Ｂ’）であって、天板（１５）付き円筒状部（１２）及び該円筒状部（１２）の下端部に連設された漏斗状部（１４）からなる本体部（１１）と、前記円筒状部（１２）の上部にその接線方向に沿って設けられた空気導入管（１６）と、前記本体部（１１）内に導入された空気（ａ）を前記エアーフィルタ（１０）に導くべく前記天板（１５）の中央部に垂設された空気導出管（１７）と、前記漏斗状部（１４）の下部に設けられたダスト排出口（１８）と、を備えていることを特徴とする内燃エンジン用空気予浄化装置。   An air pre-purification device (10A, 10B, 10B ′) disposed upstream of an intake air filter (10) of an internal combustion engine (100), the cylindrical portion (12) with a top plate (15), and A main body part (11) comprising a funnel-like part (14) connected to the lower end part of the cylindrical part (12), and air provided along the tangential direction at the upper part of the cylindrical part (12) An introduction pipe (16) and an air lead-out pipe (which is suspended at the center of the top plate (15) to guide the air (a) introduced into the main body (11) to the air filter (10) 17) and a dust discharge port (18) provided at a lower portion of the funnel-shaped portion (14). 前記ダスト排出口（１８）にダストキャッチタンク（２０）が取り付けられていることを特徴とする請求項１に記載の空気予浄化装置。   The air pre-purification device according to claim 1, wherein a dust catch tank (20) is attached to the dust discharge port (18). 前記ダストキャッチタンク（２０）は、前記ダスト排出口（１８）に着脱自在に取り付けられていることを特徴とする請求項２に記載の空気予浄化装置。   The air pre-purification device according to claim 2, wherein the dust catch tank (20) is detachably attached to the dust discharge port (18). 前記ダストキャッチタンク（２０）に、ダスト排出用の手動開閉蓋（２０ａ）が設けられていることを特徴とする請求項２に記載の空気予浄化装置。   The air pre-purification device according to claim 2, wherein the dust catch tank (20) is provided with a manual opening / closing lid (20a) for discharging dust. 前記本体部（１１）内のエンジン吸入負圧が大きいときには、前記ダスト排出口（１８）を自動的に閉じ、前記エンジン吸入負圧が小さいときには、前記ダスト排出口（１８）を自動的に開く圧力応動弁（３０）を備えていることを特徴とする請求項１に記載の空気予浄化装置。   When the engine suction negative pressure in the main body (11) is large, the dust discharge port (18) is automatically closed, and when the engine suction negative pressure is small, the dust discharge port (18) is automatically opened. The air pre-purification apparatus according to claim 1, further comprising a pressure responsive valve (30). 前記圧力応動弁（３０）は、前記本体部（１１）内の前記エンジン吸入負圧に応動して前記ダスト排出口（１８）に接離してそれを開閉する弁体（３２）と、該弁体（３２）の開閉移動用案内部（３６）及びダスト排出用開口（３７）が形成され前記ダスト排出口（１８）に取り付けられる筐体部（３５）と、を備えていることを特徴とする請求項５に記載の空気予浄化装置。   The pressure responsive valve (30) includes a valve body (32) that opens and closes the dust discharge port (18) in response to the engine suction negative pressure in the main body (11), and opens and closes the valve body (32). A body (32) opening / closing movement guide (36) and a dust discharge opening (37), and a housing (35) attached to the dust discharge port (18). The air pre-purification device according to claim 5. 前記弁体（３２）を前記ダスト排出口（１８）を開く方向に常時付勢する付勢部材（４０）を備えていることを特徴とする請求項６に記載の空気予浄化装置。   The air pre-purification device according to claim 6, further comprising an urging member (40) for constantly urging the valve body (32) in a direction to open the dust discharge port (18).
JP2005006654A 2005-01-13 2005-01-13 Air preparatory purification device for internal combustion engine Pending JP2006194152A (en)

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WO2012090480A2 (en) 2010-12-27 2012-07-05 Hitachi Koki Co., Ltd. Engine-operated machine
CN108167092A (en) * 2018-02-01 2018-06-15 高博集团有限公司 A kind of air cleaner of the resistance to dust storm of high temperature resistant
CN110126587A (en) * 2019-06-20 2019-08-16 高博集团有限公司 A kind of automobile air-conditioning filter with pre- dedusting mechanism

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* Cited by examiner, † Cited by third party
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WO2012090480A2 (en) 2010-12-27 2012-07-05 Hitachi Koki Co., Ltd. Engine-operated machine
WO2012090480A3 (en) * 2010-12-27 2012-08-30 Hitachi Koki Co., Ltd. Engine-operated machine
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CN108167092A (en) * 2018-02-01 2018-06-15 高博集团有限公司 A kind of air cleaner of the resistance to dust storm of high temperature resistant
CN110126587A (en) * 2019-06-20 2019-08-16 高博集团有限公司 A kind of automobile air-conditioning filter with pre- dedusting mechanism

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