To provide an expansion tank which can combine the work efficiency of water injection to an engine cooling device with air-liquid separation performance.SOLUTION: A hermetic expansion tank 30 connected to an engine cooling device, and separating air from cooling water circulating in the cooling device comprises: a tank body 35; a plurality of bulkheads 42 having communicative holes 44 at a lower side than a water level reference line 43, and partitioning the inside of the tank body 35 into a plurality of separated chambers 36a to 36f; a flow-in port 34 connected to the separated chamber 36a at a position at a lower side than the water level reference line 43; a flow-out port 33 connected to the separated chamber 36e other than the separated chamber 36a at a position at a lower side than the water level reference line 43; a water injection port 31 provided in the separated chamber other than the separated chamber 36a; and a backflow prevention mechanism 38 provided in the communicative hole 44 of the bulkhead 42 partitioning the separated chamber 36a.SELECTED DRAWING: Figure 3

    【課題】エンジン冷却装置に対する注水の作業性と気液分離性能を両立させることができるエクスパンションタンクを提供する。【解決手段】エンジン冷却装置に接続され、冷却装置を循環する冷却水から空気を分離する密閉型のエクスパンションタンク30において、タンク本体35と、水位基準線43よりも下側に連通穴44を有しタンク本体35の内部を複数の分離室36a〜36fに仕切る複数の隔壁42と、分離室36aに対して水位基準線43よりも下側の位置で接続された流入ポート34と、分離室36a以外の分離室36eに対して水位基準線43よりも下側の位置で接続された流出ポート33と、分離室36a以外の分離室に設けられた注水口31と、分離室36aを区画する隔壁42の連通穴44に設けた逆流防止機構38とを備えたことを特徴とする。【選択図】 図3


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    Title :

    EXPANSION TANK


    Additional title:

    エクスパンションタンク


    Contributors:

    Publication date :

    2019-08-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / E02F Baggern , DREDGING



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