| 摘要 |
A dry cell air pump that provides in excess of ten inches water column in pressure. A motor is used that draws fewer amps than prior art motors, yet operates at higher revolutions per minute. The small motor is capable of providing a high speed of rotation with relatively low torque, especially in comparison to prior art motors. To offset the low torque, a high efficiency fan is provided that rotates at high speeds, yet produces high air volume and pressure with reduced turbulence. The fan includes upper and lower walls enclosing the blades for the fan. The upper and lower walls minimize turbulence and maximize efficiency of the fan, providing a maximal tip velocity of the fan and thus increased pressure for the dry cell air pump. The fan includes a series of dimples along its upper surface that reduce back flow in the fan housing.
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