JP2009276030A - Snow gun - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make economical and efficient artificial snow fall by further atomizing atomized fluid generated by mixing compressed air with pressurized water. <P>SOLUTION: One ends of a compressed second air flow passage X and a pressurized second water flow passage Y are connected to an air flow passage and a water flow passage of a mixing element 3 stored in a snow gun body 1, respectively, and an exhaust nozzle for injecting mixed atomized fluid is provided on the downstream side of a chamber formed on a mixing flow passage downstream of the air flow passage and water flow passage. A turbo nozzle 20 for injecting the injected atomized fluid and ultrafine fluid atomized and stirred again and mixed by pressure fluid branched from the compressed second air flow passage X or the pressurized second water flow passage Y is provided outside the exhaust nozzle. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention efficiently generates atomized gas, in particular artificial snow, for spraying from a turbo nozzle a finely divided ultrafine fluid obtained by further colliding a compressed fluid with a fine fluid formed by mixing compressed air and pressurized water. It is about snow guns.

  2. Description of the Related Art Conventionally, there are a wide variety of artificial snowfall devices that generate artificial snow, and snow gun type snowfall devices that can snow even when the outside air temperature is relatively high (about 2 ° C.) have become widespread. When a atomized fluid generated by mixing compressed air and pressurized water with a mixing element provided at the tip of a snow gun is sprayed into the atmosphere from an injection nozzle, a snow gun type snowfall device uses a compressed air contained in the atomized fluid. Due to the adiabatic expansion, a low temperature region is formed in the vicinity of the nozzle outlet, and mist-like water contained in the atomized fluid is cooled and blown off the low temperature region to generate artificial snow.

  However, in reality, since water molecules injected from the injection nozzle pass through a low temperature region formed by adiabatic expansion in an instant, it is impossible to freeze most of the water molecules injected from the injection nozzle by adiabatic expansion. . For this reason, most of the water droplets become nuclei of fine ice particles after spraying and grow while falling into ice particles while adhering water droplets that are sprayed at the same time. It was. Therefore, in order to obtain artificial snow that is close to natural snow, it is necessary to improve the freezing rate by further subdividing water molecules by improving the mixing element and increasing the amount of compressed air used to widen the low temperature range. It has been broken.

The mixing element attached to the snow gun is a two-fluid nozzle type in which a pipe for mixing compressed air and pressurized water is doubled and a mixing chamber in which compressed air and pressurized water are provided to instantaneously mix to generate atomized fluid. A static mixer type is widely known. In the former two-fluid nozzle type, an inner pipe for feeding pressurized water is arranged in the center, an outer pipe for feeding compressed air is provided outside the inner pipe, and the outlet of the outer pipe is narrowed to the outlet diameter of the inner pipe. The outlet is narrowed, the pressure of the compressed air is increased, the compressed air is collided and stirred from the outside into the central water stream, and the atomized fluid is injected from the outlet (for example, see Patent Document 1).
JP 07-198238 A

  In this two-fluid nozzle type, when compressed air is injected from the surroundings to the water flow column in the inner pipe, the pressure of the compressed air decreases as the compressed air reaches the center of the cross section of the water flow column, and the arrival time is delayed. It is difficult to form a uniform atomized fluid because the atomized fluid is non-uniform and uneven, for example, it becomes difficult to reach partially. Furthermore, in order to eliminate non-uniformity of the atomized fluid sprayed from the jet outlet, the pressure of the compressed air is further increased, and the compressed air reaches the central portion of the water flow and is stirred. To be formed. However, in order to raise the pressure of compressed air, there existed problems, such as requiring a large sized compressor.

  When mixing compressed air and pressurized water with a static mixer type mixing element, the compressed air and pressurized water sent in separate circuits are stirred and mixed in the mixing chamber to generate atomized fluid, and the atomized fluid is mixed. Spray from a spout provided downstream of the chamber. The atomized fluid mixed by the static mixer type mixing element has higher fluidity of compressed air than moisture contained in the atomized fluid. Compressed air instantaneously gathers outside the spout and adiabatically expands and rapidly cools the perimeter of the spout while ejecting more than in a space with little or no moisture. There was a problem that the generation efficiency of artificial snow was reduced due to the increase of the number of artificial snows. That is, in the mixing element of the static mixer, the water molecules are refined and are sent to the small-mouthed nozzle, so that the water is forcibly pushed from the wide area to the narrow area and the water is recombined. Snow generation efficiency has been reduced.

  The fine particle fluid is easily separated into water and air over time due to the influence of gravity. The fine particle fluid mixed by the static mixer is pushed upward by light compressed air near the jet outlet, and heavy water molecules There is a problem that the mixed atomized fluid does not become uniform, such as being easily gathered on the lower side. Furthermore, since the atomized fluid is blown far away in a wide range with a snow gun, the mixing element is sprayed with the mixing element installed at an angle close to the horizontal direction from about 45 degrees, so the atomized fluid is affected by gravity as described above. However, it is difficult to be uniform and the generation efficiency of artificial snow is reduced.

  In order to reduce the imbalance of the atomized fluid generated by this static mixer type mixing element, like the two-fluid nozzle type, the capacity of the compressor is increased to increase the pressure of the compressed air to forcibly However, in order to increase the capacity of the compressor, there is a problem that the compressor is expensive and power consumption increases, which is very uneconomical and noise increases.

  Therefore, the present invention does not generate atomized fluid by raising the pressure of compressed air using a large compressor and forcibly stirring and mixing, but supplies air to the mixing element, that is, supplied compressed air or Providing a snow gun with a turbo nozzle that generates a super atomized fluid consisting of more finely divided water molecules by injecting a portion of pressurized water into the atomized fluid again, colliding with water molecules, stirring and mixing The purpose is to do.

  In the present invention, the compressed air and pressurized water are stirred and mixed in the snow gun body 1 provided with the jet port 9 on the downstream side of the mixing element 3 for mixing compressed air and pressurized water from the air channel 4 and the water channel 5. A turbo nozzle 20 for injecting a micronized fluid n generated by colliding with a micronized fluid m with a pressure fluid s and pulverizing and subdividing again is provided at the jetting port 9. The mixing element 3 is provided with one end of a compressed air pipe X and a pressurized water pipe Y accommodated in the snow gun body 1 and connected to a mixing channel 6 provided downstream of the air channel 4 and the water channel 5. A spout 9 for injecting the atomized fluid m in which the compressed air and the pressurized water are mixed is formed on the downstream side of the chamber 7, and is divided from the compressed second air flow path X or the pressurized second water flow path Y. The supercharged pipe 23 for injecting the pressurized fluid s is connected to the extending cylinder 21 of the turbo nozzle 20 and injected from the injection port 22 of the extending cylinder. Further, the turbo nozzle 20 has one end connected to the downstream side of the jetting port 9 of the mixing element 3 and allows the atomized fluid m ejected from the jetting port to flow, and the inside of the drawing cylinder 21 At least one supercharged pipe 23 that collides with the atomized fluid m flowing through the compressed air pipe X or the pressurized water pipe Y with the pressurized fluid pipe S, and one end connected to the supercharged pipe 23 and the other end. And a connecting pipe 26 for supplying a pressurized fluid s from either one of the compressed air pipe X and the pressurized water pipe Y connected to the jet port 9. Furthermore, the extending cylinder 21 constituting the turbo nozzle 20 includes a mounting position of the supercharging pipe 23 and a distance A to the jet port 9 of the mixing element 3 and a mounting position of the supercharging pipe 23 and the extending cylinder 21. The distance B to the injection port 22 is longer than the diameter e of the supercharged pipe 23, and the inner diameter c of the elongated cylinder 21 is larger than the inner diameter f of the supercharged pipe 23. Further, at least one or more of the supercharged pipes 23a connected to the extending cylindrical body 21 of the turbo nozzle 20 are attached to each other in parallel or at an arbitrary angle so that the pressure fluids s injected from the supercharged pipes 23a do not collide with each other. Thus, it is characterized by being attached at an angle or an angle with respect to the axial direction of the stretched cylinder portion 21. Further, the second turbo nozzle 40 includes a first injection nozzle 45 connected to a supercharged pipe 43 connected in a direction perpendicular to the axial direction of the extending cylinder 41 connected to the jet outlet of the mixing element 3. The first injection nozzle 45 is provided with a second injection nozzle 47 that is inclined at an obtuse angle or has a tapered tapered hole at the upstream side of the extending cylindrical body 21. . Furthermore, the second mixing element 33 is formed in a double manner by arranging a second water flow path 34 for supplying pressurized water in the center and a second air flow path 35 for supplying compressed air on the outside to form a double. The throttle part 36 narrowed to the vicinity of the outlet of the second water flow path 34 is formed at the end of the second air flow path 35 in the vicinity where the compressed water and the pressurized water merge, and the compressed water and the compressed air are mixed downstream of the throttle part. An ejection port 37 for injecting the atomized fluid m is provided, and the super atomized fluid n generated by being divided from the second air channel 35 or the second water channel 35 and colliding with the atomized fluid m is subdivided. A turbo nozzle 20 for spraying is provided at the jet outlet 37. Further, the third turbo nozzle 50 attached to the ejection port 37 of the second mixing element 33 has one end connected to the ejection port 37 of the mixing element 33 and the elongated cylinder 51 for circulating the atomized fluid m, and the stretching. The supercharging flow path 53 which connects the horizontal flow path 54 and the 1st vertical flow path 55 which supply the pressure fluid s provided in the cylinder is provided. Furthermore, the supercharging flow path 53 of the third turbo nozzle 50 includes a horizontal flow path 54 for supplying the pressure fluid s and a second vertical flow path 56 formed to be inclined with respect to the axial direction of the extending cylindrical body 41. Alternatively, the tip is connected via a third longitudinal channel 57 formed in a tapered taper hole.

  Therefore, by attaching the turbo nozzles 20, 40, 50 to the jet nozzles 9, 37 of the mixing elements 3, 33, the atomized fluid m is sheared, stirred, and mixed again to achieve uniform and ultra-fine atomization. Artificial snow can be generated efficiently by generating fluid n and spraying it from the jet nozzle, and since no large compressor is required, noise is quiet, compressed air consumption is low, and power consumption is low. It is very economical because there are few.

FIG. 1 is a plan view of a snow gun according to the present invention, FIG. 2 is a side view thereof, FIG. 3 is a sectional view showing a use state in which a turbo nozzle is attached to a mixing element, and FIG. Is a sectional view showing a use state in which a turbo nozzle is attached to a mixing element having a chamber, FIG. 5 is an enlarged sectional view of a main part of the turbo nozzle, and FIG. 6 is a sectional view of the turbo nozzle in which a plurality of supercharging pipes are attached in parallel. 7 is a cross-sectional view of a turbo nozzle with a supercharged pipe installed in the vertical direction, FIG. 8 is a cross-sectional view of a turbo nozzle installed with the connection position of the supercharged pipe being changed, and FIG. FIG. 10 is a front view of a turbo nozzle in which upper and lower supercharging pipes are attached at an angle to each other, and FIG. Attached to the body 12 is a cross-sectional view of a turbo nozzle in which a plurality of supercharged pipes are inclined in parallel and attached to an extending cylinder, and FIG. 13 is inclined by changing the attachment angles of the upper and lower supercharged pipes. FIG. 14 is a cross-sectional view of a second turbo nozzle having a first injection nozzle, FIG. 15 is a cross-sectional view of a second turbo nozzle having a second injection nozzle, 16 is a cross-sectional view of the second mixing element with a turbo nozzle attached thereto, FIG. 17 is a cross-sectional view of the second mixing element with a third turbo nozzle having a first longitudinal flow path, and FIG. FIG. 19 is a cross-sectional view of the third turbo nozzle having the second vertical flow path, and FIG. 19 is a cross-sectional view of the third turbo nozzle having the third vertical flow path.
A snow gun body 1 attached to an artificial snowfall device (not shown) has a compressed second air flow path X and a pressurized second water flow path Y for sending compressed air and pressurized water to one end, and compressed air and pressurized water inside. The mixing element 3 for stirring and mixing is provided, and the turbo nozzle 20 or the second turbo nozzle 40 is attached to the jet port 9 provided at the tip of the mixing element.

  As shown in FIG. 3, the mixing element (static mixer type) 3 according to the first embodiment includes an air flow path 4 connected to a compressed pipe X to which compressed air is fed, and a pressurized second water flow path on the other side. A water flow channel 5 communicating with Y is provided, a substantially T-shaped, that is, a mixed water channel 6 having an enlarged diameter downstream is formed on the downstream side of each flow channel, and a large-diameter chamber 7 is provided downstream of the mixed water channel. is there. An agitating inner cylinder 8 having a U-shaped cross section is attached to the chamber 7 by opening the mixing channel 6 side. The inner wall of the stirring inner cylinder 8 and the inner wall of the chamber 7 are provided with a number of recesses (not shown) for efficiently reflecting and agitating and mixing the inflowing pressure fluid. A jet port 9 is formed at an arbitrary position on the downstream side wall surface of the chamber 7, and a turbo nozzle 20 is provided outside the jet port 9.

  As shown in FIG. 4, the mixing element 3 is provided with a chamber chamber 12 through a connection port 11 provided on the downstream side of the chamber 7, and an ejection port 13 is formed at an eccentric position on the downstream side wall surface of the chamber chamber. is there. By providing this jet port 13 at an eccentric position of the chamber chamber 12, the atomized fluid in the chamber chamber further causes a turbulent flow phenomenon. To refine.

  As shown in FIGS. 1 to 5, the turbo nozzle 20 is attached with an extending cylinder 21 having the same inner diameter as the outlet of the mixing element 3 on the outer side of the outlet 9 of the mixing element 3, and is attached to an intermediate portion of the extending cylinder. A supercharging pipe 23 is connected to supply a pressure fluid (water or air) s that externally shears and agitates and mixes the atomized fluid m flowing while stirring and mixing in the drawing cylinder, and the supercharging A connecting pipe 26 is connected to one of the compressed air pipe X and the pressurized water pipe Y, one end of which is connected to the pipe and the other end is connected to the mixing element 3. The connecting pipe 26 is provided with an opening / closing valve 28 for opening and closing the flow path, but this is not always necessary.

  By forming the inner diameter of the extending cylinder 21 constituting the turbo nozzle 20 to be the same as or slightly larger than the inner diameter of the jet port 9, the frictional resistance of the atomized fluid m flowing through the extending cylinder decreases. Is preventing. Further, as shown in FIG. 5, the total length of the extending cylinder 21 is such that the attachment position of the supercharging pipe 23 and the distance A to the spout 9 of the mixing element 3, the position of the supercharging pipe 23, and the extension cylinder 21. The distance B to the injection port 22 provided at the tip is formed to be equal to or slightly longer than the diameter e of the supercharged pipe 23 and is at least three times or less, but is not limited to three times. By forming the inner diameter c of the elongated cylinder 21 within at least three times the inner diameter f of the supercharged pipe 23, it is possible to uniformly stir and mix with the pressure fluid s from the supercharged pipe. The generated ultra-fine atomized fluid n can be efficiently ejected outward from the ejection port without being re-separated, but is not necessarily limited to within 3 times.

  For example, when the fluid velocity of the atomized fluid m flowing in the extending cylinder 21 is 60 to 100 m / s, the frictional resistance F of the fluid flowing in the extending cylinder 21 is F = L / αD (L: The length of the stretched cylinder, D: the inner diameter of the stretched cylinder). Therefore, if the distance A is too long, extra frictional resistance increases and energy loss increases, and the distance B includes the atomized fluid m flowing in from the direction A and the pressure fluid s pumped from the supercharged pipe 23. When the micronized fluid n generated by collision and stirring and mixing flows in the B direction, the micronized fluid n undergoes a recombination action of water particles over time (distance). Therefore, if the distance B is too long, water molecules are recombined and then released under atmospheric pressure, so the effect of artificial snowfall by adiabatic expansion is halved. Therefore, when the atomized fluid m flowing in from the A direction and the pressure fluid s injected from the supercharging pipe 23 are mixed by stirring, the ultra atomized fluid n generated in the B direction causes recombination of water molecules. It is possible to efficiently generate artificial snow by discharging in the previous ultrafine particle state (distance B).

  The pressure fluid s injected from the supercharged pipe 23 into the elongated cylinder 21 divides, for example, 10 to 40% of the amount of water flowing through the pressurized water pipe Y when using pressurized water as the pressure fluid. To use. When compressed air is used, 10-20% of the amount of air flowing through the compressed air pipe X is diverted. It is preferable that the flow rate of the divided pressure fluid is 6 m / s for pressurized water and 25 m / s for compressed air.

  Under the above conditions, the pressure fluid s is jetted from the supercharged pipe 23 and collides with the atomizing fluid m flowing through the stretched cylindrical body 21 to subdivide the water particles, whereby the water molecules are further refined and the ultrafine particles are obtained. By generating a fluid (100 μm or less) n and spraying it from the jet port 9, more artificial snow can be snowed with a small amount of compressed air, so that power consumption is small and economical. For example, smoke smoldering in a mountain is about 10μ in size, and if water particles of the same size are generated with a snow gun to form snow, the particles are too small to diffuse and scatter to places other than the predetermined slope. Therefore, about 100μ is preferable.

  The supercharging pipes 23 attached to the first turbo nose 20 can improve the mixing / stirring efficiency of the atomized fluid m by variously changing the number, the attachment angle, and the like. Hereinafter, an embodiment of the supercharged pipe 23 will be described with reference to the drawings. FIG. 5 shows a pressure fluid s by connecting a single supercharged pipe 23 in a direction perpendicular to the axial center direction of the elongated cylinder 21. Sprays the central part of the atomized fluid m flowing through the extending cylinder 21 from a right angle direction, and further subdivides the water particles by utilizing the expansion and contraction action when the compressed fluid s returns to atmospheric pressure with a bursting force. As shown in the arrow, the pressure fluid s can collide with the wall surface on the opposite side of the supercharged pipe 23 of the stretched cylinder 21 and bounce back to stir and mix the atomized fluid m again. .

  As shown in FIG. 6, a plurality of supercharged pipes 23a are mounted side by side at right angles to the axial direction of the extending cylinder 21, or as shown in FIG. You may attach so as to oppose on an axial center. By attaching a plurality of supercharged pipes 23a, the injection amount of the pressure fluid s flowing from the outside into each supercharged pipe 23 is increased, and gathers near the center of the atomized fluid m flowing through the elongated cylinder 21. The water molecules are subdivided by colliding an intense pressure fluid s against the high-density water molecules. In addition, since the smaller the water particles of the atomized fluid m sprayed from the downstream injection port 22, the more effective freezing can be achieved by adiabatic expansion, so that the subdivided water molecules are blown into the air. By touching air having an adiabatic expansion effect, ice can be efficiently frozen to generate artificial snow.

  As shown in FIGS. 8 to 10, a plurality of supercharging pipes 23 a are attached to the elongated cylinder 21 so as to be orthogonal to each other (FIG. 9), or the axial center directions of the supercharging pipes 23 a are shifted in the vertical direction. The pressure fluids s are attached at an angle at which the pressure fluids s do not directly collide with each other (FIG. 8), or one of the supercharged pipes 23a is made vertical and the other is changed to an angle within 180 degrees. It is preferable to connect at an angle that does not interfere (FIG. 10).

  By changing the mounting positions of the plurality of supercharging pipes 23a with respect to the direction perpendicular to the axial direction of the extending cylinder 21, the direction in which the pressure fluid s is injected is changed to be opposite to the extending cylinder 21, respectively. By colliding with the wall surface and irregularly reflecting, it is strong against high-density water molecules that are gathered while involving large water particles and compressed air that are present in the vicinity of the central portion of the atomized fluid m that circulates in the stretched cylinder 41. The pressure fluid s collides with the liquid and the liquid particles are pulverized and scattered again to be subdivided. Moreover, since the water particles in the atomized fluid m can be efficiently subdivided by spraying in two or three stages while changing the injection angle, the atomized fluid n can be generated from the injection port 22. It is possible to generate artificial snow by efficiently generating an icing phenomenon due to adiabatic expansion by reducing the size of the ultrafine atomized fluid n.

  As shown in FIGS. 11 to 13, at least one supercharged pipe 23 b may be attached to the upstream side or the downstream side, preferably the upstream side, of the extending cylindrical body 21 with a slight angle. In this case, it is preferable to mount it at an angle of 30 degrees or less.

  Since the flow velocity of the atomized fluid m flowing through the stretched cylinder 21 flows down at a high speed of 60 to 100 m / s or more, when the outlet of the supercharged pipe 23b is inclined and attached, It is possible to make the pressure fluid s ejected from the supercharged pipe collide with the atomizing fluid m, and to mix and mix by shearing and stirring. If the supercharged pipe 23b is attached orthogonally to the extending cylinder 21 or is inclined to the downstream side, the distance B to the injection port 22 is short, so that the pressure fluid s may immediately flow down in the direction of the injection port. . For this reason, the pressure fluid s in the supercharged pipe 23b is attached to the atomized fluid m located upstream from the position of the supercharged pipe 23b by attaching the pressure fluid s at an angle so that the pressure fluid s is jetted upstream. It is possible to efficiently generate artificial snow by further subdividing the particles of the super atomized fluid n that are collided and efficiently stirred and mixed in the extending cylinder 21 and sprayed from the injection port 22. It goes without saying that the cross-sectional mouth shape of the extending cylindrical body 21 constituting the turbo nozzle 20 may be formed into an elliptical shape other than a circular shape or other shapes.

  FIG. 14 is a cross-sectional view of the main part of the second turbo nozzle 40, and the first injection nozzle 45 connected to the tip of at least one supercharging pipe 43 that pumps the pressure fluid s is separate from the supercharging pipe 43. The body is formed as a stretched cylinder 41. The tip of the supercharged pipe 43 connected in a direction perpendicular to the axial direction of the extending cylinder 41 is stopped inside the wall surface of the extending cylinder 41 and is provided in the extending cylinder and connected to the first injection nozzle 45; The first injection nozzle is attached with a slight angle on the upstream side with respect to the axial direction of the extending cylinder 41. It is preferable that the attachment is made at an angle of about 30 degrees from the downstream side, that is, an obtuse angle with respect to the upstream side.

  FIG. 15 shows another embodiment of the supercharging pipe 43 constituting the second turbo nozzle 40. At least one second injection nozzle 47 for pumping the pressure fluid s is provided separately from the supercharging pipe. The tip of the supercharged pipe 43 connected in the direction perpendicular to the axial direction of the extending cylinder 41 is stopped inside the wall surface of the extending cylinder 41, and the second injection nozzle 47 provided at the end of the supercharged pipe is formed into a tapered tapered hole. It is formed. By forming the second injection nozzle 47 to be tapered, the pressure and flow velocity of the pressure fluid s can be increased, and the atomized fluid m flowing through the stretched cylinder 41 is strongly sheared and stirred to be mixed. By subdividing the water particles, the super atomized fluid n can be generated.

  By forming the first injection nozzle 45 of the supercharged pipe 43 in the extending cylindrical body 41 that is a separate body from the supercharged pipe, it is easy to eliminate the difficulty of connecting work for inclining and attaching the supercharged pipe 43. Therefore, the work efficiency can be improved. Further, by forming the second injection nozzle 47 in the extending cylindrical body 41 that is a separate body from the supercharging pipe 43, it is simple and easy except for the difficulty of the processing operation for forming the tip of the supercharging pipe tapered. Since they can be connected, work efficiency can be improved.

  FIG. 16 shows an embodiment in which the turbo nozzle 20 is attached to the outlet 37 of the second mixing element 33. The second mixing element 33 is formed at the center of a double pipe formed on the same axis. It consists of a second water passage 34 for sending pressure water and a second air passage 35 for sending compressed air to the outside of the water passage. One end of each of the water passage 34 and the second air passage 35 is compressed. It is connected to an air pipe X and a pressurized water pipe Y.

  A compressed portion 36 is formed by forming a constricted portion 36 in which the outlet end of the second air flow path 35 of the second mixing element 33 is constricted to the vicinity of the outlet diameter of the second water flow passage 34, and the spout 37 is narrowed by the constricted portion. And the atomized fluid m, which is a mixture of air and water, is sprayed from the outside to the water column of the central second water flow path 34. The turbo nozzle 40 attached to the ejection port 37 of the second mixing element 33 is the same as that attached to the mixing element 20 described above, and therefore the description thereof is omitted here. The third turbo nozzle 50 that is attached and used only at the outlet 37 will be described.

  FIG. 17 shows an embodiment of the third turbo nozzle 50 attached to the outlet 37 of the second mixing element 33, and the third turbo nozzle 50 is a thick elongated cylinder formed with a slightly smaller diameter than the outlet 37. One end of the cylinder wall 51 is opened to the outlet 37 side, the transverse flow path 54 is positioned in the axial direction and the horizontal direction of the extension cylinder 41, and the axis of the extension cylinder 41 approximately at the center of the extension cylinder 41. A supercharging nozzle 53 is formed by connecting the first vertical flow path 54 positioned perpendicular to the direction.

  Compressed air pumped from the inner periphery of the jet port 37 to the atomized fluid m flowing from the jet port 37 of the second mixing element 33 through the extending cylinder 51 of the third turbo nozzle 50 is supplied into the supercharging nozzle 53. Is supplied to the atomized fluid m flowing through the stretched cylinder 51 and collides, and is sheared and stirred to mix and atomize the ultrafine atomized fluid n to be injected into the atmosphere. Therefore, it is possible to snow artificial snow efficiently.

  In FIG. 18, the supercharging nozzle 53 of the third turbo nozzle 50 is provided with a transverse channel 54 provided with one end opened to the jet outlet 37 side and positioned substantially in the axial direction of the extending cylinder 51, and an extending cylinder. A second longitudinal flow channel 56 is formed at an approximate center of the body 51 so as to be inclined toward the upstream side or the downstream side with respect to the axial center direction of the extending cylindrical body 51.

  The pressure fluid s injected from the inner peripheral edge of the ejection port 37 is inclined with respect to the atomized fluid m flowing from the ejection port 37 of the second mixing element 33 through the extending cylinder 51 of the third turbo nozzle 50. The atomized fluid m that is reliably collided by the supercharging nozzle 53 having the longitudinal flow path 56 and circulates in the stretched cylindrical body 51 is mixed by shearing and stirring, and the water particles are further subdivided to produce a super atomized fluid n. It is possible to efficiently snow artificial snow by generating and spraying.

  FIG. 19 shows that the supercharging nozzle 53 of the third turbo nozzle 50 is provided with a transverse flow path 54 provided at one end by jetting toward the opening 37 side and positioned in the axial direction and the horizontal direction of the extending cylinder 41. A tip end of a third longitudinal flow path 57 provided at a position substantially perpendicular to the axial center direction of the extending cylindrical body 41 at a substantially center of the cylindrical body 41 is tapered and communicated. By forming the third longitudinal channel 57 to be tapered, the pressure and flow velocity of the pressure fluid can be increased, and the atomized fluid m flowing through the stretched cylindrical body 51 is strongly sheared and stirred to be mixed. Thus, an ultrafine atomized fluid n can be generated.

1 is a plan view of a snow gun according to the present invention. It is the same side view. It is sectional drawing which shows the use condition which attached the turbo nozzle to the mixing element. It is sectional drawing which shows the use condition which attached the turbo nozzle to the mixing element which has a chamber. It is a principal part expanded sectional view of a turbo nozzle. It is sectional drawing of the turbo nozzle which attached the some supercharging pipe in parallel. It is sectional drawing of the turbo nozzle which attached the supercharged pipe to the up-down direction. It is sectional drawing of the turbo nozzle attached changing the connection position of a supercharged pipe. It is a front view of the turbo nozzle which attached the supercharged pipe to the up-down direction. It is a front view of the turbo nozzle which attached the upper and lower supercharging pipes at an angle. It is sectional drawing of the turbo nozzle which attached the supercharged pipe inclining to the extending | stretching cylinder. FIG. 4 is a cross-sectional view of a turbo nozzle in which a plurality of supercharged pipes are inclined in parallel and attached to an extension cylinder. It is sectional drawing of the turbo nozzle attached to the extending | stretching cylinder by inclining changing the attachment angle of several upper and lower supercharged pipes, respectively. It is sectional drawing of the 2nd turbo nozzle which has the 1st injection nozzle. It is sectional drawing of the 2nd turbo nozzle which has the 2nd injection nozzle. It is sectional drawing of the state which attached the turbo nozzle to the 2nd mixing element. It is sectional drawing of the state which attached the 3rd turbo nozzle which has a 1st vertical path to the 2nd mixing element. It is sectional drawing of the 3rd turbo nozzle which has a 2nd vertical flow path. It is sectional drawing of the 3rd turbo nozzle which has a 3rd vertical flow path.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Snow gun body 3 Mixing element 4 Air flow path 5 Water flow path 6 Mixing flow path 7 Chamber 9 Spout 20 Turbo nozzle 21 Stretched cylinder 22 Injection port 23 Supercharged pipe 26 Connection pipe 33 2nd mixing element 34 2nd water flow path 35 Second air flow path 36 Restriction part 37 Spout 40 Second turbo nozzle 41 Stretched cylinder 43 Supercharged pipe 45 First injection nozzle 47 Second injection nozzle 50 Third turbo nozzle 51 Stretched cylinder 53 Supercharged pipe 55 First Vertical flow channel 56 Second vertical flow channel 57 Third vertical flow channel X Compressed second air flow channel Y Pressurized second water flow channel m Atomized fluid n Super atomized fluid s Pressure fluid

Claims (9)

In the snow gun body (1) provided with the jet outlet (9) on the downstream side of the mixing element (3) for mixing the compressed air and pressurized water from the air channel (4) and the water channel (5),
A turbo nozzle for injecting a micronized fluid (n) produced by colliding a pressure fluid (s) with a micronized fluid (m) obtained by stirring and mixing the compressed air and pressurized water and pulverizing and subdividing again. A snow gun characterized in that 20) is provided at the jet outlet (9).   The mixing element (3) is provided by accommodating one end of a compressed air pipe (X) and a pressurized water pipe (Y) in a snow gun main body (1), and downstream of the air flow path (4) and the water flow path (5). A jet port (9) for injecting the atomized fluid (m) in which the compressed air and the pressurized water are mixed is formed on the downstream side of the chamber (7) connected to the mixing channel (6) provided in A supercharged pipe (23) that injects a pressurized fluid (s) that is diverted from either the compressed air pipe (X) or the pressurized water pipe (Y) is attached to the elongated cylinder (21) of the turbo nozzle (20). The snow gun according to claim 1, wherein the snow gun is connected and sprayed from an ejection port (22) of the elongated cylindrical body. The turbo nozzle (20) has one end connected to the downstream side of the jet port (9) of the mixing element (3) and allows the atomized fluid (m) ejected from the jet port to circulate. When,
At least one or more supercharged pipes that collide the compressed fluid (m) flowing from the compressed air pipe (X) or the pressurized water pipe (Y) with the atomized fluid (m) flowing through the elongated cylinder (21). (23)
Pressure fluid (s) is supplied from one of the compressed air pipe (X) and the pressurized water pipe (Y) having one end connected to the supercharging pipe (23) and the other end connected to the jet outlet (9). The snow gun according to claim 1, wherein the snow gun comprises a connecting pipe.   The extending cylindrical body (21) constituting the turbo nozzle (20) includes a distance (A) between the attachment position of the supercharged pipe (23) and the ejection port (9) of the mixing element (3), and a supercharged pipe. The distance (B) from the attachment position of (23) to the injection port (22) of the elongated cylinder (21) is formed longer than the diameter (e) of the supercharged pipe (23), and the elongated cylinder (21) The snow gun according to any one of claims 1 to 3, wherein an inner diameter (c) is larger than an inner diameter (f) of the supercharged pipe (23).   At least one or more supercharging pipes (23a) to be connected to the extending cylinder (21) of the turbo nozzle (20) are attached to each other in parallel or at an arbitrary angle, and pressure fluid is ejected from each supercharging pipe (23a). The snow gun according to any one of claims 1 to 4, wherein (s) is attached at a position where they do not collide with each other, at an angle or an angle with respect to the axial direction of the extending tube portion (21).   The second turbo nozzle (40) is a first injection nozzle connected to a supercharged pipe (43) connected in a direction perpendicular to the axial direction of the extending cylinder (41) connected to the outlet of the mixing element (3). (45) is formed in the stretched cylinder (41), and the first injection nozzle (45) is inclined at an obtuse angle upstream of the stretched cylinder (21), or the tip is formed in a tapered taper hole. The snow gun according to claim 1 or 2, further comprising a second injection nozzle (47).   The second mixing element (33) has a second water flow path (34) for feeding pressurized water in the center and a second air flow path (35) for feeding compressed air on the outside to form a double. A narrowed portion (36) narrowed to the vicinity of the outlet of the second water flow path (34) is formed at the end of the second air flow path (35) in the vicinity where the compressed air and the pressurized water merge, and the downstream side of the narrowed portion Is provided with a jet outlet (37) for injecting atomized fluid (m) in which pressurized water and compressed air are mixed, and the atomization is performed by diverting from the second air channel (35) or the second water channel (35). The snow gun according to claim 1, wherein a turbo nozzle (20) for injecting an ultrafine atomized fluid (n) generated by colliding with the fluid (m) is provided at the outlet (37).   The third turbo nozzle (50) attached to the spout (37) of the second mixing element (33) has one end connected to the spout (37) of the mixing element (33) and atomized fluid (m). A supercharged flow path (53) formed by connecting a first cylindrical flow path (55) and a horizontal flow path (54) for supplying a pressure fluid (s) provided in the stretched cylindrical body (51). 8. The snow gun according to claim 7, further comprising:   The supercharging flow path (53) of the third turbo nozzle (50) is formed to be inclined with respect to the axial direction of the transverse flow path (54) for supplying the pressure fluid (s) and the extending cylinder (41). The snow gun according to claim 7, wherein the snow gun is connected via a second vertical flow path (56) or a third vertical flow path (57) whose tip is formed in a tapered hole.

Images