Fluid sprayer employing piezoelectric pump
First Claim
1. An electrically-operated fluid sprayer comprising:
- a fluid pump including an inlet port, an outlet port, a pump chamber, and a piezoelectric element;
drive circuitry coupled to said piezoelectric element such that said piezoelectric element is deformed and displaced to vary the volume of said pump chamber in order to pump fluid into said inlet port and into said pump chamber and discharge fluid from said pump chamber out said outlet port;
spin mechanics disposed downstream from said outlet port of said fluid pump; and
a discharge nozzle coupled to said spin mechanics.
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Accused Products
Abstract
An electrically-powered fluid sprayer employs a piezoelectric fluid pump that includes an inlet port, an outlet port, a pump chamber, and a piezoelectric element that is deformed and displaced by electrical signals supplied thereto to vary the volume of the pump chamber. Such displacement pumps fluid into the inlet port and into the pump chamber and discharges fluid from the pump chamber out the outlet port. The inlet port is in fluid-communication with a fluid reservoir. Spin mechanics may be disposed downstream from the outlet port of the fluid pump and upstream from the discharge nozzle. The piezoelectric fluid sprayer may be extended to include a dual chamber piezoelectric pump that pumps different fluids (e.g., a liquid and air). The output of the dual chamber pump is mixed in a manifold and supplied downstream to the discharge nozzle. Spin mechanics may be employed in the fluid stream upstream from the discharge nozzle after the mixing.
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Citations
36 Claims
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1. An electrically-operated fluid sprayer comprising:
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a fluid pump including an inlet port, an outlet port, a pump chamber, and a piezoelectric element;
drive circuitry coupled to said piezoelectric element such that said piezoelectric element is deformed and displaced to vary the volume of said pump chamber in order to pump fluid into said inlet port and into said pump chamber and discharge fluid from said pump chamber out said outlet port;
spin mechanics disposed downstream from said outlet port of said fluid pump; and
a discharge nozzle coupled to said spin mechanics. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 25, 26, 27, 28, 33, 34)
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11. An electrically-operated fluid sprayer comprising:
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a fluid pump including a first inlet port, first outlet port, a first pump chamber, a second inlet port, a second outlet port, a second pump chamber, and at least one piezoelectric element;
drive circuitry coupled to said at least one piezoelectric element such that said at least one piezoelectric element is deformed and displaced to vary the volume of said first and second pump chambers in order to pump a first fluid into said first inlet port and to said first pump chamber and discharge fluid from said first pump chamber out said first outlet port, and to pump a second fluid into said second inlet port and to said second pump chamber and discharge fluid from said second pump chamber out said second outlet port;
a mixing manifold disposed downstream from said first and second outlet ports of said fluid pump, said mixing manifold adapted to mix the first and second fluids discharged from said first and second outlet ports of said pump; and
a discharge nozzle coupled downstream of said mixing manifold. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 29, 30, 31, 32, 35, 36)
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Specification