Patent ID: 6048182
Filing Date: 2000-04-11
Classification: B05B,F04D

Abstract:
A high volume low pressure (hereinafter HVLP) blower having a blower motor with a cooling fan for passing cooling air over the blower motor, a blower turbine connected to and driven by the blower motor for delivering HVLP air to an air outlet, and an air intake communicating fresh incoming air to the cooling fan and to the blower turbine, the HVLP blower comprising:a) a blower housing having mounted therein the blower motor and blower turbine, the blower housing having exhaust vents therein for exhausting cooling air exhaust to the atmosphere; andb) an exhaust plenum within the blower housing for preventing mixing of the incoming air with the cooling air exhaust and providing a first passageway for cooling air exhaust to be communicated from the cooling fan to the exhaust vents, such that the exhaust vents direct the cooling air exhaust away from the air intake,c) wherein the exhaust plenum houses the blower motor and blower turbine and the exhaust plenum divides the incoming air flow into two streams, the incoming air flowing through a second passageway and a third passageway such that fresh incoming air flows over a portion of the exhaust plenum and cools the exhaust plenum,d) wherein the exhaust plenum has a top side and a bottom side with the blower motor mounted to a top side adjacent a cooling air inlet defined in the top side, such that the cooling fan draws fresh incoming air into the motor through the cooling air inlet,e) wherein the blower turbine is mounted to a bottom side of the exhaust plenum and adjacent a turbine inlet such that the blower turbine draws fresh incoming air into the blower turbine through the blower turbine inlet;f) wherein the exhaust plenum further comprises:i) a U shaped cooling air baffle rigidly attached to the top side proximate the cooling air inlet for directing tie flow of air in the second passageway defining an indirect flow path to the cooling air inlet such that the contact of fresh incoming air with the top side of the exhaust plenum is maximized; andii) a U shaped turbine inlet baffle rigidly attached to the bottom side proximate the turbine inlet for directing the flow of air in the third passageway defining an indirect flow path to the turbine inlet such that the contact of fresh incoming air with the bottom side of the exhaust plenum is maximized.