家用除湿机风道优化设计

Optimization Study of the Air Passage of the House-hold Dehumidifier

运用CFD和实验方法研究家用除湿机出风风道。寻找涡舌处得曲率半径和出风风道扩张角对风量和噪声的影响机理和规律,结果表明适当增大涡舌处的曲率半径可以减少气流的撞击损失,合理的出风张角可以减少分离回流损失,通过实验证明加强风机入口处的密封可减少漏风的无谓功耗,降低整体噪声。该研究结果对除湿机的风道设计具有实际意义。

The outflow air passage of the house-hold dehumidifier was studied using CFD and experiment setup. The influences of radius of stabilizer and expansion angle of outlet on flow rate and noise were presented. The results show that an appropriate larger radius of the stabilizer can reduce the collision loss of airflow in the stabilizer, and a proper expansion angle of the outlet is helpful to reduce the separation loss at the outlet. Meanwhile, airproof enhancement in the inlet and fan is beneficial for reducing the noise and increasing the flow rate. The results can be applied to the practical design of dehumidifier.