REXROTH單向閥,力士樂單向閥,Rexroth單向閥 單向閥是空調(diào)冷暖機采用的,需和四通閥配合使用,一般裝在分體機外機上。單向閥其實就像一根水管,中間裝了一個單向導通的閥門。單向閥兩端都有兩個接口,一根較短的制熱毛細管和單向閥并聯(lián),這樣兩端各有一個接口被占用。單向閥剩下的接口一端接較長的制冷毛細管,一端接室內(nèi)機。正常制冷情況下,室內(nèi)機是制冷,室外機是制熱,雪種由室外機流入制冷毛細管,再流入單向閥,再流入室內(nèi)機,這時單向閥是導通的,制熱毛細管的流量可以忽略,不起作用。制熱情況下,工況是逆向的,室內(nèi)機是制熱,室外機是制冷,這時四通閥進行換向,雪種由室內(nèi)機流入單向閥,由于單向閥單向截止,雪種只能流入和單向閥并聯(lián)的制熱毛細管,再流入制冷毛細管,再流入室外機。由于室內(nèi)機和室外機上面的熱交換器表面積不同,在交換角色時需要的毛細管長度不同,單向閥就是改變毛細管的長度。 單向閥又稱止回閥或逆止閥。用于液壓系統(tǒng)中防止油流反向流動。單向閥有直通式和直角式兩種。直通式單向閥用螺紋連接安裝在管路上。直角式單向閥有螺紋連接、板式連接和法蘭連接三種形式。液控單向閥也稱閉鎖閥或保壓閥,它與單向閥相同,用以防止油液反向流動。但在液壓回路中需要油流反向流動時又可利用控制油壓,打開單向閥,使油流在兩個方向都可流動。液控單向閥采用錐形閥芯,因此密封性能好。在要求封閉油路時,可用此閥作為油路的單向鎖緊而起保壓作用。液控單向閥控制油的泄漏方式有內(nèi)泄式和外泄式二種。在油流反向出口無背壓的油路中可用內(nèi)泄式;否則需用外泄式,以降低控制油壓力。單向閥是氣流只能一個方向流動而不能反向流動的方向控制閥。其工作原理與液壓單向閥一樣。壓縮空氣從尸口進入,克服彈簧力和摩擦力使單向閥閥口開啟,壓縮空氣從P流至A;當P口無壓縮空氣時,在彈簧力和A口(腔)余氣力作用下;閥口處于關閉狀 態(tài),使從A至P氣流不通。單向閥應用于不允許氣流反向流動的場合,如空壓機向氣罐充氣 時,在空壓機與氣罐之間設置一單向閥,當空壓機停止工作時,可防止氣罐中的壓縮空氣回流 到空壓機。單向閥還常與節(jié)流閥、順序閥等組合成單向節(jié)流閥、單向順序閥使用。 2812 4WE6G6X/AW220N9K4? 1200?? 2811 4WE6M62/EG24NQK4? 700?? 2810 4WE6D62/EG24NGK4? 450?? 2808 4WE6D62/EG24N9K4? 450?? 2806 4WE6D61/EW110N9Z4? 860?? 2803 4WE6J6X/EG24N9K4/V? 600?? 2801 4WE6D61B/CG24N9Z5L? 460?? 2799 4WE10C33/CW230N9K4? 1260? 2798 4WE10E33/CG24N9K4? 760 2797 4WE6E62/EG24N9K4/B16? 500? 2796 4WE10J33/CG24N9K4? 760? 2795 4WE10D33/CG24N9K4? 650? 德國力士樂REXROTH單向閥 2794 4WE6HA62/EG24N9K4? 600?? 2793 4WE6D62/EG24N9K4? 450 2792 4WE10J33/CG24N9K4? 770? 2790 4WE6E61B/CG24N9KE+Z5L? 560?? 2788 4WE10J50/AG24NZ4? 780? 2787 4WE10D35/CG24NZ4? 660? 2784 4WE10EA3X/CG24N9K4? 780?? 2783 4WE10E3X/CG24N9K4? 780? 2777 4WE10D33/OFCG24N9K4? 2050? 2776 4WE6D62/OFEG24N9K4? 1150?? 2775 4WE10Y33/CG24N9K4? 680? 2774 4WE10E3X/CW220-50NZ5L? 1580 2773 4WE6D5X/OFAG24NZ5L? 1160?? 2772 4WE10J3X/CG24N9K4? 780? 2771 4WE10D3X/CG24N9K4? 670 2770 4WE6D6X/OFEG24NK4? 560? 2769 4WE6D6X/OFEG24NK4? 1100 2768 4WE6D6X/EG24NK4? 460 2767 4WE6D6X/EG24K4? 460 2760 4WE6D6X/EW220N9K4? 700?? 2758 4WE6HB62/EG24N9K4? 600? 2755 4WE10J3X/CG24N9K? 770?? 2754 4WE10HA3X/CG24N9K4? 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