IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0309490
(2002-12-04)
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발명자
/ 주소 |
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출원인 / 주소 |
- Bowles Fluidics Corporation
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
20 인용 특허 :
0 |
초록
▼
A fluidic oscillator capable of generating free fluid jets having distinctive, controllable and industrially/commercially useful flow patterns has a switching chamber having an inlet port that allows a pressurized fluid to enter and flow through the oscillator, an exhaust passage having a sidewall t
A fluidic oscillator capable of generating free fluid jets having distinctive, controllable and industrially/commercially useful flow patterns has a switching chamber having an inlet port that allows a pressurized fluid to enter and flow through the oscillator, an exhaust passage having a sidewall that forms one boundary wall of the switching chamber, a container passage having a sidewall that forms the second boundary wall of the switching chamber, a compliance member connected to the distal end of the container passage, and an expansion chamber connected to the distal end of the exhaust passage, with the expansion chamber having an exhaust orifice that allows fluid to flow from the oscillator. In operation, such an oscillator yields a contained fluid jet that issues from the inlet port into the swishing chamber and alternately switches its flow direction between the container and exhaust passages. This switching action serves to generate controllable pressure waves in the exhaust passage and expansion chamber which act to control the pattern of the free fluid jet that flows from the orifice.
대표청구항
▼
1. A fluidic oscillator capable of generating fluid jets having distinctive, controllable and useful flow patterns, said oscillator comprising:a switching chamber having an inlet port that allows a pressurized fluid to enter and flow through said oscillator,an exhaust passage having a sidewall that
1. A fluidic oscillator capable of generating fluid jets having distinctive, controllable and useful flow patterns, said oscillator comprising:a switching chamber having an inlet port that allows a pressurized fluid to enter and flow through said oscillator,an exhaust passage having a sidewall that forms a first boundary wall of said switching chamber,a container passage having a sidewall that forms a second boundary wall of said switching chamber,a container connected to the distal end of said container passage, wherein said container and its contents working together to provide said distal end with specified compliance capabilities, andan expansion chamber connected to the distal end of said exhaust passage, said expansion chamber having an orifice that allows fluid to flow from said oscillator. 2. A fluidic oscillator as recited in claim 1, wherein said oscillator being operable so as to yield a fluid jet that issues from said inlet port into said switching chamber and alternately switches its flow direction between said container and exhaust passages, said action serving to generate controllable pressure waves in said exhaust passage and expansion chamber, with said pressure waves acting to control the pattern of said fluid jet that flows from said orifice. 3. A fluidic oscillator as recited in claim 1, wherein said exhaust and container passages having tapered sidewalls which converge toward said inlet port. 4. A fluidic oscillator as recited in claim 2, wherein said exhaust and container passages having tapered sidewalls which converge toward said inlet port. 5. A fluidic oscillator as recited in claim 1, wherein said orifice is a sharp-edged orifice. 6. A fluidic oscillator as recited in claim 2, wherein said orifice is a sharp-edged orifice. 7. A fluidic oscillator as recited in claim 1, wherein said orifice is an annular orifice. 8. A fluidic oscillator as recited in claim 2, wherein said orifice is an annular orifice. 9. A fluidic oscillator as recited in claim 2 further characterized by selecting the dimensions of said expansion chamber so as to further control the pattern of said fluid jet that flows from said orifice. 10. A fluidic oscillator as recited in claim 4 further characterized by selecting the dimensions of said expansion chamber so as to further control the pattern of said fluid jet that flows from said orifice. 11. A fluidic oscillator as recited in claim 6 further characterized by selecting the dimensions of said expansion chamber so as to further control the pattern of said fluid jet that flows from said orifice. 12. A fluidic oscillator as recited in claim 8 further characterized by selecting the dimensions of said expansion chamber so as to further control the pattern of said fluid jet that flows from said orifice. 13. A method of providing a free fluid jet from fluid under pressure, said jet having distinctive, controllable and useful flow patterns, said method comprising the steps of:forming a contained fluid jet,deflecting said contained jet between an exhaust passage and a container passage,wherein said exhaust passage having at its distal end an expansion chamber, said chamber having and an orifice that allows said fluid to flow from said chamber, and wherein the distal end of said container passage having a container, with said container and its contents working together to provide said distal end with specified compliance capabilities,generating controlled pressure waves in said exhaust passage and expansion chamber as a result of said contained jet deflections, with said pressure waves acting to control the pattern of said free fluid jet that flows from said orifice. 14. A method as recited in claim 13, further comprising the step of selecting the dimensions of said expansion chamber so as to further control the pattern of said fluid jet that flows from said orifice. 15. A method as recited in claim 14 wherein the geometry of said orifice is chosen so that said orifice has sharp edges. 16. A method as recited in claim 15 wherein the geometry of said orifice is chosen so that said orifice is an annular orifice. 17. A fluidic device capable of generating fluid jets having distinctive, controllable and useful flow patterns, said device comprising:a means adapted to receive fluid under pressure and form a fluid jet,a means powered solely by the fluid under pressure for deflecting said jet between an exhaust and a contained passage,wherein said device being sized and operated at appropriate fluid pressure levels so as to generate controllable pressure waves in said exhaust passage, with said pressure waves acting to control the pattern of said fluid that flows from said exhaust passage. 18. A fluidic device as recited in claim 17,wherein the distal end of said exhaust passage having an expansion chamber and an orifice that allows said fluid to flow from said device, andwherein the distal end of said contained passage having a container, with said container and its contents working together to provide said distal end with specified compliance capabilities. 19. A fluidic device as recited in claim 18 further characterized by selecting the dimensions of said expansion chamber so as to further control the pattern of said fluid jet that flows from said device. 20. A fluidic device as recited in claim 19, wherein said orifice is a sharp-edged orifice. 21. A fluidic device as recited in claim 19, wherein said orifice is an annular orifice.
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