| 摘要 |
PURPOSE:To obtain a system for maintaining the motor temperature below the gas temperature with reduced cost, weight and volume by providing a duct for flowing high temperature gas, blower, drive motor, means for flowing low temperature gas around the motor and means for separating between low and high temperature gases. CONSTITUTION:Upon entering of high temperature reaction gas into a system 30 through a duct 24, negative pressure produced by a propeller 32 will cause the reaction gas to be sucked through the duct 24 toward a straightner vane 38 at the downstream of a circular space 40 formed by a blower outer shell 46, duct 24 and a separation shell 42. A fresh air and fuel supply duct 20 is arranged concentrically with the duct 24 to feed the fresh gas through a duct 20 into an adjoining space 56 at the upstream of a motor housing 50 to cool the housing 50. Then the fresh gas will pass through a circular gap 58 to move uniformly along the housing 50 thus to maintain the temperature of motor to that of the fresh gas resulting in improvement of blower motor. |
