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US 2017/0304848 A1Published application
Fluidic chip for spray nozzles
AssigneeIllinois Tool Works Inc.
InventorsKristian A. OSTERGREN, Gunter WOZNIAK, Thomas RICHTER
Life of this patent
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Abstract
A fluidic chip defining an oscillator device for a spray system which provides a fan spray pattern of a fluid mixture at low temperature conditions while using standard fluid pump pressures. The fluidic chip configurations as described may provide a substantially stable exit fan angle at temperatures as low as about −10 degrees Celsius.
Claims20
A fluidic chip adapted to generate a fan spray pattern of a fluid mixture, the fluidic chip comprising:
- a constricted throat fluid entrance defining a power nozzle opening into a four-way intersection flow control zone;
- an interaction chamber immediately downstream from the four-way intersection flow control zone such that the fluid mixture passes from the four-way intersection flow control zone and into the interaction chamber;
- and
- a pair of backflow control channels disposed within a spaced-apart plane relative to the interaction chamber, wherein the backflow control channels define fluid communication links between a downstream portion of the interaction chamber and the four-way intersection flow control zone and wherein during operation of the fluidic chip the backflow control channels alternate with one another to feed portions of the fluid mixture from the interaction chamber into opposing sides of the four-way intersection flow control zone in a cyclical manner and wherein during operation of the fluidic chip, a beam of the fluid mixture is cyclically shifted between opposing sides of the interaction chamber to generate the fan spray pattern.
1 more element
A fluidic chip adapted to generate a fan spray pattern of a fluid mixture, the fluidic chip comprising:
- a constricted throat fluid entrance defining a power nozzle opening into a four-way intersection flow control zone;
- an interaction chamber immediately downstream from the four-way intersection flow control zone such that the fluid mixture passes from the four-way intersection flow control zone and into the interaction chamber, wherein the constricted throat fluid entrance is aligned along a common axis of symmetry with the interaction chamber and an outlet throat;
- and
- a pair of backflow control channels disposed within a spaced-apart plane relative to the interaction chamber, wherein the backflow control channels define fluid communication links between a downstream portion of the interaction chamber and the four-way intersection flow control zone and wherein during operation of the fluidic chip the backflow control channels alternate with one another to feed portions of the fluid mixture from the interaction chamber into opposing sides of the four-way intersection flow control zone in a cyclical manner and wherein during operation of the fluidic chip, a beam of the fluid mixture is cyclically shifted between opposing sides of the interaction chamber to generate the fan spray pattern.
1 more element
A fluidic chip adapted to generate a fan spray pattern of a fluid mixture, the fluidic chip comprising:
- a constricted throat fluid entrance defining a power nozzle opening into a four-way intersection flow control zone;
- an interaction chamber immediately downstream from the four-way intersection flow control zone such that the fluid mixture passes from the four-way intersection flow control zone and into the interaction chamber, wherein the constricted throat fluid entrance is aligned along a common axis of symmetry with the interaction chamber and an outlet throat;
- and
- a pair of backflow control channels disposed within a spaced-apart plane relative to the interaction chamber, wherein the backflow control channels define fluid communication links between a downstream portion of the interaction chamber and the four-way intersection flow control zone and wherein during operation of the fluidic chip the backflow control channels alternate with one another to feed portions of the fluid mixture from the interaction chamber into opposing sides of the four-way intersection flow control zone in a cyclical manner and wherein during operation of the fluidic chip, a beam of the fluid mixture is cyclically shifted between opposing sides of the interaction chamber to generate the fan spray pattern, wherein the constricted throat fluid entrance has a smaller cross section than an aligned fluid passage between the four-way intersection flow control zone and the interaction chamber and wherein each of the backflow control channels has a substantially straight sided configuration with rounded distal and proximal ends.
1 more element
Dependencies are inferred from the claim text.