초록 ▼

There is disclosed herein a liquid spray gun which includes an improved heat dissipation system and an improved leakage flow recirculating system. The improved heat dissipation system results from an improved and stronger air flow through the gun housing and around the electromagnetic coils. The imp

There is disclosed herein a liquid spray gun which includes an improved heat dissipation system and an improved leakage flow recirculating system. The improved heat dissipation system results from an improved and stronger air flow through the gun housing and around the electromagnetic coils. The improved air flow is created by a venturi or aspiration effect at the spray tip created by the action of the piston pump in spraying liquid at high velocity reducing the air pressure adjacent the tip. The internal portion of the housing communicates with the low pressure area so air in the housing is drawn from the housing to the low pressure area. Vents are provided in the housing adjacent the electromagnetic coils for outside air to be drawn into said housing over said coils and to the low pressure area, thus improving air flow and heat dissipation.

대표청구항 ▼

A high pressure paint spray gun which includes: a gun-like housing; a spray tip at one end of the housing, said spray tip including a liquid atomizing spray nozzle having a spray pattern and a ribbed open-mesh spray structure about said nozzle and opening into said housing, said structure having a l

A high pressure paint spray gun which includes: a gun-like housing; a spray tip at one end of the housing, said spray tip including a liquid atomizing spray nozzle having a spray pattern and a ribbed open-mesh spray structure about said nozzle and opening into said housing, said structure having a larger diameter downstream of the nozzle such that said structure lies substantially outside of the spray pattern from the nozzle; housing associated wall means radially spaced from said nozzle substantially encircling said nozzle and extending downstream therefrom defining an area open to an interior of the housing, said wall means being substantially outside the spray pattern; pump means in said housing for delivering a liquid under high pressure to said nozzle for spraying at a high velocity; electric motor means in said housing for driving said pump means, said motor means generating heat during operation; vent means formed in said housing adjacent said electric motor means; whereby during spraying said liquid is sprayed at a high pressure and is atomized and creates a low pressure area forward of and adjacent said spray tip interior of said wall means, which cooperates in drawing air through said vents, over said electric motor means, through said housing and around said spray tip interior of said wall means, so as to aid in cooling said electric motor means.