Apparatus producing superheated water and /or steam for weed killing and other applications
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B05B-001/24
B05B-009/08
B05B-001/20
B05B-001/26
B05B-001/08
B05B-001/04
출원번호
US-0570294
(2004-06-10)
등록번호
US-8740109
(2014-06-03)
국제출원번호
PCT/AU2004/000769
(2004-06-10)
§371/§102 date
20061208
(20061208)
국제공개번호
WO2005/120225
(2005-12-22)
발명자
/ 주소
Muston, Philip
Parkin, David
Winer, Jeremy
출원인 / 주소
Steamwand International Pty Ltd
대리인 / 주소
DiBerardino McGovern IP Group LLC
인용정보
피인용 횟수 :
1인용 특허 :
17
초록▼
Apparatus producing superheated water and/or steam for weed (36) killing, etc. has diesel fired boiler (30), which, via pump (32), generates hot water at a pressure of 40-52 bar and temperature of 90-115° C. This passes down tube (12) and encounters the constriction provided by nozzle (14). Passing
Apparatus producing superheated water and/or steam for weed (36) killing, etc. has diesel fired boiler (30), which, via pump (32), generates hot water at a pressure of 40-52 bar and temperature of 90-115° C. This passes down tube (12) and encounters the constriction provided by nozzle (14). Passing through nozzle (14) into depressurization chamber (16), which is at atmospheric pressure, the water boils. When the super heated water exits ports (20) of distribution pipe (18) it encounters ambient temperature and is transformed into high temperature water vapor and/or water droplets. The apparatus controls or kill weeds (36) using a smaller volume of water and less energy.
대표청구항▼
1. A method of killing or controlling vegetation, the method comprising: receiving from a source a superheated pressurized flow of water at a temperature greater than 90° C. and a pressure of 30-100 bar in a conduit transporting the flow; depressurizing the flow of the superheated pressurized water
1. A method of killing or controlling vegetation, the method comprising: receiving from a source a superheated pressurized flow of water at a temperature greater than 90° C. and a pressure of 30-100 bar in a conduit transporting the flow; depressurizing the flow of the superheated pressurized water to substantially ambient atmospheric pressure to create a mixture of hot water and saturated steam by receiving the flow in an enclosed space having two restrictions including: a first restriction constricting the flow of superheated pressurized water entering the enclosed space and maintaining pressurization of the flow at 30-100 bar in the conduit between the first restriction and the source, said restriction having a first surface and a second surface, the first surface on a side of the restriction receiving the heated, pressurized flow of water and arranged substantially orthogonal to a side wall of the conduit; the second surface arranged on a side of the restriction opposite the first surface, and an aperture travelling between the first surface and the second surface along an axis between the first surface and the second surface; and a second restriction providing an outlet for any moisture generated by depressurizing flow of superheated pressurized water; and killing or controlling vegetation by delivering the mixture of hot water and saturated steam from the outlet to the vegetation. 2. A method as claimed in claim 1, wherein the first restriction has a diameter of from 0.5 mm to 3.0 mm. 3. A method as claimed in claim 1, wherein receiving a superheated pressurized flow of water at a temperature greater than 90° C. and a pressure of 30-100 bar includes receiving the flow at a pressure of 40 to 52 bar. 4. A method as claimed in claim 1, wherein receiving a superheated pressurized flow of water at a temperature greater than 90° C. and a pressure of 30-100 bar includes receiving the flow at a temperature of 100° C. to 150° C. 5. A method as claimed in claim 1, wherein receiving a superheated pressurized flow of water at a temperature greater than 90° C. and a pressure of 30-100 bar includes receiving the flow at a rate of between 2 liters per minute to 13 liters per minute. 6. A method as claimed in claim 1, wherein delivering the mixture of hot water and saturated steam to the vegetation includes delivering the mixture at a pressure in the range of 0 to 1 bar above atmospheric pressure. 7. The method of claim 1 wherein the outlet has a diameter of 2 mm to 10 mm. 8. The method of claim 1 wherein the outlet has an area greater than the area of the first restriction. 9. The method of claim 1 wherein the outlet has an area at least twice the area of the first restriction. 10. The method of claim 1 wherein the volume of the enclosed space is larger than the volume of the flow of water from the first restriction. 11. An apparatus for killing or controlling vegetation, comprising: an inlet tube receiving a superheated pressurized flow of water at a temperature greater than 100° C. and a pressure of 30-100 bar from a source; a restriction defining an aperture that constricts the superheated pressurized flow of water in the inlet tube and maintains pressurization of the flow in the inlet tube between the source and the aperture at the pressure of 30-100 bar, said restriction having a first surface and a second surface, the first surface on a side of the restriction receiving the heated, pressurized flow of water and arranged substantially orthogonal to a side wall of the inlet tube; the second surface arranged on an side of the restriction opposite the first surface, and an aperture travelling between the first surface and the second surface along an axis between the first surface and the second surface; an expansion chamber in direct fluid communication with said restriction receiving the flow of superheated pressurized water from the inlet tube through the restriction and into the expansion chamber to depressurize the flow of superheated pressurized water to substantially ambient atmospheric pressure and generate a mixture of hot water and saturated steam in the expansion chamber as a result of said depressurization, the expansion chamber having only a single outlet through which moisture can exit the enclosed space; and a distributor, in direct fluid communication with the outlet, receiving the mixture of hot water and saturated steam from the expansion chamber, the distributor including a plurality of delivery holes delivering the mixture of hot water and saturated steam from the delivery holes to vegetation to kill or control the vegetation. 12. A method of killing or controlling vegetation, the method comprising: receiving in an inlet tube a flow of water heated by a boiler to a temperature greater than 100° C. and pressurized by a pump to a pressure of 30-100 bar within the inlet tube; constricting by a nozzle the heated, pressurized flow of water received in said inlet tube, said nozzle having a first surface and a second surface, the first surface on a side of the nozzle receiving the heated, pressurized flow of water and arranged substantially orthogonal to a side wall of the inlet tube; the second surface arranged on a side of the nozzle opposite the first surface, and an aperture travelling between the first surface and the second surface along an axis between the first surface and the second surface, said aperture of a size and a shape allowing said heated, pressurized flow to pass through the aperture while causing the temperature of the flow at the aperture to remain greater than 100° C. and the pressurization of the heated pressurized flow in the inlet tube between the pump and the aperture to be maintained at a pressure of 30-100 bar; depressurizing and cooling the heated, pressurized flow received from said aperture in an expansion chamber to substantially ambient atmospheric pressure, said depressurization and cooling of the heated, pressurized flow in said expansion chamber creating a mixture of hot water and saturated steam, said expansion chamber sized to receive said flow and provide said depressurization and cooling to create the mixture and having only a single outlet through which moisture can exit the expansion chamber; and killing or controlling vegetation by receiving the mixture of hot water and saturated steam from the expansion chamber in a distributor, in direct fluid communication with the outlet, the distributor delivering the mixture of hot water and saturated steam onto the vegetation. 13. The apparatus of claim 12, wherein constricting by a nozzle, further includes constriction by a nozzle wherein the first surface and the second surface are substantially planar to each other and arranged orthogonal to the side wall of the inlet tube; and the aperture travelling between the first surface and the second surface along the axis is arranged substantially orthogonal to the first surface and the second surface and substantially parallel to the side wall of the inlet tube. 14. An apparatus for killing or controlling vegetation, the apparatus comprising: an inlet tube receiving a flow of water heated by a boiler to a temperature greater than 100° C. and pressurized by a pump to a pressure of 30-100 bar within the inlet tube; a nozzle constricting the heated, pressurized flow of water received in said inlet tube, said nozzle having a first surface and a second surface, the first surface on a side of the nozzle receiving the heated, pressurized flow of water and arranged substantially orthogonal to a side wall of the inlet tube; the second surface arranged on a side of the nozzle opposite the first surface, and an aperture travelling between the first surface and the second surface along an axis between the first surface and the second surface, said aperture of a size and a shape allowing said heated, pressurized flow to pass through the aperture while causing the temperature of the flow in the inlet tube at the aperture to remain greater than 100° C. and maintaining pressurization of the heated pressurized flow in the inlet tube between the pump and the aperture at a pressure of 30-100 bar; an expansion chamber in fluid communication with said aperture depressurizing and cooling the heated, pressurized flow received from said aperture to substantially ambient atmospheric pressure to create a mixture of hot water and saturated steam, said expansion chamber having dimensions to receive said flow a provide said depressurization and cooling to create the mixture and having only a single outlet through which moisture can exit the expansion chamber; and a distributer receiving the mixture of hot water and saturated steam from the single outlet and delivering the mixture of hot water and saturated steam onto the vegetation to kill or control the vegetation. 15. The apparatus of claim 14, wherein the first surface and the second surface are substantially parallel to each other and arranged orthogonal to the side wall of the inlet tube; and the aperture travelling between the first surface and the second surface along the axis is arranged substantially orthogonal to the first surface and the second surface and substantially parallel to the side wall of the inlet tube. 16. An system for killing or controlling vegetation, the system comprising: a boiler heating water to a temperature greater than 100° C.; a pump receiving the heated water and pressurizing the heated water to a pressure of 30-100 bar; an inlet tube transporting a flow of the heated, pressurized water received from the pump; a nozzle constricting the heated, pressurized flow of water received in said inlet tube, said nozzle having a first surface and a second surface, the first surface on a side of the nozzle receiving the heated, pressurized flow of water and arranged substantially orthogonal to a side wall of the inlet tube; the second surface arranged on an opposite side of the nozzle, and an aperture travelling between the first surface and the second surface along an axis between the first surface and the second surface, said aperture of a size and a shape allowing said heated, pressurized flow to pass through the aperture while causing the temperature of the flow in the inlet tube at the aperture to remain greater than 100° C. and maintaining pressurization of the heated pressurized flow in the inlet tube between the pump and the aperture at a pressure of 30-100 bar; an expansion chamber in fluid communication with said aperture depressurizing and cooling the heated, pressurized flow received from said aperture to substantially ambient atmospheric pressure to create a mixture of hot water and saturated steam as a result of the depressurization, said expansion chamber having dimensions to receive said flow and provide said depressurization and cooling to create the mixture and having only a single outlet through which moisture can exit the expansion chamber; and a distributer receiving the mixture of hot water and saturated steam from the single outlet and delivering the mixture of hot water and saturated steam onto the vegetation to kill or control the vegetation. 17. The system of claim 16, wherein the first surface and the second surface are substantially parallel to each other and arranged orthogonal to the side wall of the inlet tube; and the aperture travelling between the first surface and the second surface along the axis is arranged substantially orthogonal to the first surface and the second surface and substantially parallel to the side wall of the inlet tube.
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이 특허에 인용된 특허 (17)
Brown Claude E., Agricultural methods with superheated steam.
Stouffer Ronald D. (Silver Spring MD) Srinath Dharapuram (Hanover MD), Low cost, low pressure, feedback passage-free fluidic oscillator with stabilizer.
Karlsson Axel T. (94 Townsend Dr. Middletown NJ 07748) Stand Mille (Apt. 4A ; 117 S. Highland Ave. Ossining NY 10562), Thermal spray apparatus for coating a substrate with molten fluent material.
Thompson James E. (1000-E Hoover Rd. Winter Haven FL 33884) Rajamannan A. H. J. (2120 Argonne Dr. Minneapolis MN 55421), Use of hot water to kill vegetation.
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