| 摘要 |
A sprinkler comprises a housing having an inlet, three apertures and a through hole. A transmission device has a fan wheel and a decreasing device mounted in the housing. A fixed base is mounted on a top of the housing, which has an axial hole communicated with the through hole and three lateral holes communicated with the axis hole. A piston is received in the axial hole of the fixed base, which is connected to the decreasing device to be driven for reciprocation. Three jet fan are received in the lateral hole and pivoted on the fixed base, each of which has a channel with an inlet and an outlet. The jet fans are driven by the reciprocation of the piston for swing. Three hose are connected to the apertures of the housing and the inlets of the jet fan respectively.
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