Snow making using low pressure air and water injection
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F25C-003/04
F25C-003/00
B05B-007/04
B05B-007/06
B05B-007/02
출원번호
US-0741281
(2003-12-20)
발명자
/ 주소
Nikkanen,John P.
출원인 / 주소
Nikkanen,John P.
인용정보
피인용 횟수 :
11인용 특허 :
8
초록▼
Snow is made, for use on ski slopes and the like, using compressed air at a pressure substantially less than 95 psig, preferably around 30 psig. The air is provided to a snow making head or snow gun, where it is flowed through an air nozzle having effective diameter D. The air stream intersects a wa
Snow is made, for use on ski slopes and the like, using compressed air at a pressure substantially less than 95 psig, preferably around 30 psig. The air is provided to a snow making head or snow gun, where it is flowed through an air nozzle having effective diameter D. The air stream intersects a water droplet stream with angle A and at distance L from the air nozzle. Preferred angle A is in the range 70 to 110 degrees. The preferred ratio L/D is in the range 9:1 and 22:1. High pressure air from existing compressor systems is reduced to a desired substantially lower pressure by a central choked flow throttle upstream of an aftercooler, or by multi-stage throttles located near the snow making head. Water is added to the compressed air to substantially improve snow making, particularly when ambient relative humidity is low.
대표청구항▼
I claim: 1. A snow making head comprising: a body, having a longitudinal axis; a water nozzle, for providing water droplets which flow along a water stream path; and, an air nozzle, having an effective diameter D, for discharging compressed air supplied to the head, so the air flows along an air st
I claim: 1. A snow making head comprising: a body, having a longitudinal axis; a water nozzle, for providing water droplets which flow along a water stream path; and, an air nozzle, having an effective diameter D, for discharging compressed air supplied to the head, so the air flows along an air stream path; wherein the centerline of the air stream path intersects the centerline of the water stream path at point IM, at distance L from the air nozzle; wherein the included angle A between said centerlines at point IM is between about 70 and 110 degrees; and wherein the ratio of L/D is between about 9:1 and 22:1. 2. A snow making head comprising: a generally tubular body, having a longitudinal axis and a downstream end; a water nozzle, attached to the body, for providing water droplets which flow along a water stream path, with a velocity component in the downstream direction of said longitudinal axis; and, an air nozzle, attached to the body, having an effective diameter D, for discharging compressed air supplied to the head, so air flows along an air stream path at an angle C measured from a plane perpendicular to the longitudinal axis of said body, with a velocity vector component in the upstream longitudinal axis direction of the body; wherein the centerline of the air stream path intersects the centerline of the water stream path at point IM, at distance L from the air nozzle; wherein the included angle A between said centerlines at point IM is between about 70 and 110 degrees. 3. The snow making head of claim 2, wherein the ratio of L/D is between about 9:1 and 22:1. 4. The snow making head of claim 1 or 2 wherein angle A is greater than 75 degrees and less than 90 degrees. 5. The snow making head of claim 1 or 2 wherein the L/D ratio is between about 13:1 and 18:1. 6. The snow making head of claim 1 or 2, wherein the said water nozzle is at the end of a boss which projects transversely from the exterior of the body. 7. The snow making head of claim 1 or 2, further comprising one or more additional pairs of similarly configured and arranged air and water nozzles, the pairs of nozzles spaced apart around the exterior surface of the body. 8. The snow making head of claim 1 or 2 wherein the air nozzle comprises a multiplicity of small ports having an air flow area equal to a single circular hole of effective diameter D. 9. A snow making bead comprising: a body, having a longitudinal axis; a water nozzle for providing water droplets which flow along a water stream path; and, an air nozzle, having an effective diameter D, for discharging compressed air supplied to the head, so the air flows along an air stream path at an angle C measured from a plane perpendicular to the longitudinal axis of said body; wherein the centerline of the air stream path intersects the centerline of the water stream path at point IM, at distance L from the air nozzle; wherein the included angle A between said centerlines at point IM is between about 70 and 85 degrees; and, wherein angle C is between minus 5 and minus 50 degrees.
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이 특허에 인용된 특허 (8)
Dupre Herman K. (c/o Seven Springs Champion PA 15622), Method and apparatus for making snow.
Lehner, Daniela; Fauve, Mathieu; Koch, Bruno; Dangel, Claus, Arrangement, use of an arrangement, device, snow lance and method for producing ice nuclei and artificial snow.
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