JPS6036860Y2 - artificial snowfall device - Google Patents

Description

[Detailed description of the invention] This invention relates to an artificial snow-making device that can generate and make snow by a mechanism close to nature.

Conventional artificial snow-making devices of this kind generate fog from a nozzle placed on the ceiling of a low-temperature room, and freeze this fog on its way down to form snow.

However, in such an artificial snow-making device, the snow that falls has a small particle size, and is far from natural snow that falls quietly.

This invention allows the artificially created ice crystals to expand and grow by extending the residence time in which they float together with the mist from the ultrasonic humidifier. Regarding an artificial snow-making device that can make snow fall, the present invention will be described in detail below based on embodiment figures.

In the figure, reference numeral 1 indicates a snow generating chamber, and this chamber is provided above the snow generating chamber 2.

Inside the snow generation chamber 1, a floating chamber 7 is provided, which is made of a cylindrical body with an open top and bottom and an enlarged diameter at the top. A snow catching body 7a made of a material is stretched, and a scraper 8 for scraping off snow by rotating or sliding is provided on the upper surface of this snow catching body.

The snow generating chamber 1 is equipped with a cooler 5 and a blower 6 for sending cooled air into the floating chamber from the lower opening, and an ultrasonic humidifier 3 for supplying mist into the floating chamber.
This is provided.

Furthermore, an air jet nozzle 4 of an ice crystal generator is disposed in the floating chamber to eject adiabatically expanded air into the mist in the floating chamber in pulses, and the ice crystal generator has the nozzle 4 at the tip. The air supply pipe 4a is connected to the compressor 10 via a solenoid valve 9 that opens instantaneously in response to a pulse signal.

There are various types of ultrasonic humidifiers 3, but for example, as shown in FIG.
The vibrator 3g may be disposed in water 3f in a water tank 3e defined by a partition plate 3d, and a mist delivery duct 3h may be provided at the top of the water tank.

Note that it is desirable that the time during which the solenoid valve 9 is opened by the pulse is within 1 second.

The device of the present invention has the above-described structure, and mist is sent into the floating chamber 7 from the humidifier 3 together with low-temperature air.

This fog is a mist of supercooled water, which is difficult to freeze with just cold air.

The raw ice crystals are sent into this fog by the air jet nozzle 4, which adiabatically expands compressed air placed in the floating chamber in a pulsed manner and blows out the water. evaporates, condenses into ice crystals, and freezes.

However, in a floating chamber, the opening at the bottom has a small diameter, but the diameter at the top is widened, so even though the air flow rate is relatively high at the bottom opening, the flow rate at the top is small. Therefore, the residence time of the fog and ice crystals in the floating chamber is long enough to allow the ice crystals to grow and expand to the level of snow commonly found in nature.

Snow grows in this way using a mechanism similar to that found in nature, and when it expands to the point where it has a weight greater than the inertia caused by the updraft from the cooling device, it falls against the airflow.

In addition, the fog and ice crystals that are partially scattered by the rising air are captured on the lower surface of the snow trap 7a provided at the upper opening of the floating chamber.
By aggregating, the snow layer 11 becomes long, and this grown snow layer is scraped off in the shape of snowflakes by a scraper 8 provided on the upper surface of the trapping body, thereby causing snowfall.

In this way, according to the present invention, the snow that falls is created by artificially growing and expanding snow and ice crystals into snowflake shapes that have grown and expanded using the same mechanism as in the natural world, so it is natural. It is possible to make artificial snow under similar conditions.

In addition, if only snow grown by a mechanism similar to that in the natural world is required for academic purposes, a structure without a snow catcher and a scraper may be used, or the operation of the scraper may be stopped.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an example of a device according to the present invention, and FIG. 2 is a diagram showing an example of an ultrasonic humidifier. In the figure, 1...Snow generation chamber, 2...Snowfall chamber, 3...Ultrasonic humidifier, 4...Air jet nozzle, 5... ...Cooler, 6...
Blower, 7... Floating chamber, 7a... Capture body, 8... Scraper, 9... Solenoid valve, 10... Compressor .

Claims (1)

[Scope of utility model registration request] A blower is used to send cold air from the cooler into the floating chamber, which is open at the top and bottom and expanded at the top, through the opening at the bottom of the front floating chamber, and the fog generated by an ultrasonic humidifier is By floating the ice crystals generated by the adiabatic expansion of compressed air in a floating chamber, the ice crystals grow and expand using a mechanism that mimics the natural world, causing snowfall, and fog and ice that are partially blown away by cold wind. An artificial snow-making device in which crystals are captured and aggregated by a porous snow-trapping body having a scraper on the top surface provided in the upper opening of a floating chamber to cause snowfall.