| 摘要 |
A bus air conditioning unit suitable for roof mounting adjacent to the rear of a bus which includes an elongated support frame having first and second ends, front and rear portions, and a substantially open top portion. The elongated support frame is divided into forward and rear evaporator and condenser plenums, respectively, with reference to the front and rear of an associated bus, by an upstanding wall portion which extends between the first and second ends of the frame. The upstanding wall portion rises generally vertically for a predetermined dimension and it then slopes towards the front portion of the frame as it continues to rise, such that the condenser plenum includes the top portion of the frame. A condenser is supported by the substantially open top portion of the frame, an evaporator is mounted in the evaporator plenum across the front of the frame, and air conditioning system components are mounted in both said condenser and evaporator plenums. The air conditioning system components are all serviceable from the outside rear of the bus via openings provided in the rear portion of the frame, and via covered across openings provided in the upstanding wall portion which are accessible through the openings in the rear of the frame.
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