RU2137061C1 - Device for production of artificial snow - Google Patents

Abstract

FIELD: production of artificial snow; heat insulation of soils in winter; dust suppression in workings; making routes for winter sports; decorative dusting on buildings and threes. SUBSTANCE: device includes housing for supply of air, housing for supply of water with inner injectors and housing with mixing chamber; all these housings are fastened together. outer injector is mounted at mixing chamber outlet. Device is used for double-stage spraying of water. EFFECT: improved quality of spraying at very low pressure of water; reduced power requirements. 2 cl, 2 dwg

Description

 The present invention relates to refrigeration, and in particular, to devices for producing artificial snow and can be used for winter thermal insulation of soils, for dust suppression in mine workings, for creating tracks for winter sports, for decorative spraying on various buildings and trees.

 Known devices for producing artificial snow (see AS USSR NN 951031, 1668831 class F 25 C 3/04), the principle of operation of which is based on spraying water in a mixing chamber using pneumohydraulic nozzles in a stream of air pumped by a fan.

 Common with the proposed device is the presence of housings for supplying water and air, a mixing chamber and nozzles.

 However, the stated problem has not been solved in these devices due to the single-stage spraying of water in the mixing chamber. Therefore, the quality of the resulting snow is not enough. In addition, these devices require a lot of pressure to spray water. For good atomization, the nozzles should be as small as possible and, therefore, in order to achieve a high nozzle throughput, the water pressure must be correspondingly high. Typically, water pressure ranges from 20-50 bar with a compressor capacity of 1 m3 / min. Electricity consumption is 20-30 kW.

 A device for producing artificial snow is also known (see AS USSR N 1083039, class A 25 C 3/04), including a housing with nozzles for supplying water and air, a mixing chamber and a diffuser for spraying the air-water mixture located along one axes with a pipe for supplying air The pipe for supplying air is movably mounted in the housing, and part of it is located in the mixing chamber, while the channel of this pipe has the shape of a Laval nozzle, and the mixing chamber is different with a diffuser for spraying the air-water mixture PLO Laval.

 In common with the proposed device is the presence of a housing with nozzles for supplying water and air and a mixing chamber.

 However, the problem is not solved in this device due to the single-stage spraying of water in the mixing chamber. To obtain snow of the required quality, air and water must be supplied under high pressure, which requires a significant consumption of electricity.

 Closest to the proposed device is a device for producing artificial snow (see AS USSR N 1631236, class F 25 C 3/04), comprising a housing with a mixing chamber, a device for supplying air, including a pipe and a Laval nozzle, a device for supplying water with an annular chamber located around the outlet section of the Laval nozzle having openings for supplying water to the mixing chamber, a casing with a vortex tube connected to the housing and an insert in the form of an Archimedes spiral, a conical element moving along the axis is fixed nny at the free end of the casing, the annular gap between the chamber and the vortex tube, the channels in the walls of the housing.

 In common with the proposed device is the presence of a housing with a mixing chamber, a housing for supplying water, a housing for supplying air to the mixing chamber.

 However, the task in this device is not solved due to the single-stage spraying of water in the mixing chamber with a flow of incoming air. In addition, this device also requires a high pressure of air and water to produce snow of the required quality, which requires a large consumption of electricity.

 The basis of the invention is the creation of such a device, which due to structural changes of the bodies for supplying water and air, nozzles and their relative position allows to obtain high-quality snow with low energy consumption and low air pressure.

 The problem is solved by a device containing a housing for supplying air, a housing for supplying water and a housing with a mixing chamber, while nozzles for spraying water are placed in a housing for supplying water to which, on one side, a housing for supplying compressed air is attached, and on the other housing with the mixing chamber, the mixing chamber is equipped with a second nozzle located at its outlet.

 The relative position of the bodies for supplying water, air and the mixing chamber allows for two-stage spraying of water: at the first stage, nozzles located in the housing for supplying water, and at the second stage, the air flow in the mixing chamber. This significantly improves the quality of mixing water and air. In addition, for the implementation of such mixing does not require a large amount of electricity to create a relatively small pressure of water and air.

 The invention is illustrated by drawings. In FIG. 1 is a longitudinal section through a device; in FIG. 2 is a cross-sectional view of the device.

 The device (Fig. 1) contains a housing 1 for supplying compressed air with a channel 2, a housing 3 for supplying water with a channel 4, an annular cutout 5 and a through channel 6, a housing 7 with a mixing chamber 8. All cases are fastened together by bolts 9. B nozzles 10 are located in the housing 3 for supplying water. The mixing chamber 8 is made in the form of a Laval nozzle and at the outlet contains an external nozzle 11 fixed by a threaded connection. The internal nozzles 10 are also fixed in the housing 3 by a threaded connection and are concentric with respect to the channel 6 (Fig. 2.).

 The operation of the device is as follows. The water supplied through the channel 4 before contact with the air passing through the channels 2 and 6. is sprayed by the internal nozzles 10, which provides the first stage of spraying water. Mixed in the mixing chamber 8 with air, the sprayed water under air pressure is discharged through the external nozzle 11, which ensures the second stage of water spraying, where it, passing through the atmosphere, turns into snow.

Thus, due to the presence of a two-stage spraying of water (first by the internal nozzles 10, and then the outer 11), the quality of the atomization of water is significantly improved even at very low water pressures. This reduces the minimum required air pressure, which ultimately reduces the cost of electricity to create pressure of water and air. In addition, based on significantly improved water atomization, snow quality even in extreme areas (-1 ^o C; 90% air humidity) is good enough to extend snow cover time.

Claims (2)

 1. Device for the production of artificial snow, comprising an air supply housing, a water supply housing and a housing with a mixing chamber, characterized in that it comprises internal nozzles located in the water supply housing, to which the air supply housing is attached on one side, and on the other hand, a housing with a mixing chamber provided with an external nozzle located at the outlet of the chamber, the internal nozzles being placed on the side of the housing with a mixing chamber made in the form of a truncated cone located more shim to the base body for supplying water, and the housing for supplying water has a bore therethrough for the passage of air and the annular recess, which connects the inner nozzle.  2. The device according to claim 1, characterized in that the internal nozzles are concentric with respect to the through channel passing through the housing for supplying water.

Images