| 摘要 |
The present invention relates to an orifice member for the condenser fan of an air conditioning unit, which has a basepan and a partition which divides the air conditioning unit into an indoor section forwardly of the partition and an outdoor section rearwardly of the partition. The indoor section includes an evaporator coil, an evaporator fan and means for collecting condensate and directing the condensate to the basepan in the outdoor section. The outdoor section includes a condenser coil at the rear thereof, a rotatably driven condenser fan having a second side and a discharge side, the fan being located forwardly of the condenser coil. The orifice member defines a barrier between the suction and discharge side of the condenser fan and has a fan orifice opening forwardly of the fan to define a restricted air flow passage therethrough between the suction side at a generally low pressure and the discharge side at a generally high pressure. The condenser fan is an axial fan with blade s having tips extending from the suction side to the discharge side. The fan includes an annular slinger surrounding and having a portion secured to the blade tips in the region extending from the suction side to the discharge side. The tips and the slinger are located entirely rearwardly of the orifice member. The fan orifice and the slinger cooperate to define a first narrow annular passage therebetween. The slinger defines a second narrow annular passage with the underlying portion of the basepan, which is configured to collect condensate therein. The orifice member has a wall section underlying the fan orifice opening. The fan orifice opening has an imaginary vertically extending centerline and the wall section has an opening therein centered upon the centerline, which fluidly communicates the region of the basepan forwardly of the wall with both the first and second annular passages. The fluid opening has a narrow lateral dimension at the lower end thereof and a larger lateral di mension at the upper end thereof.
|
