Ultrasonic snow making machine applied to variable environmental temperature and control method
Technical Field
The invention belongs to the technical field of refrigeration and low temperature, and particularly relates to an ultrasonic snow making machine applied to variable environmental temperature and a control method.
Background
With the continuous popularization of skiing sports, snow appreciation and skiing are gradually prevalent from winter to north, skiing sites in various places are more and more, and the research on the mechanism of the snow making process of the snow making machine draws attention of a plurality of scholars. At present, the main stream snow making machine has a snow outlet mode that water mist sprayed out of a nozzle and water mist containing ice crystals sprayed out of a nuclear device are collided and combined under the blowing of a fan to promote the growth of the ice crystals so as to realize a snow making function. However, the prior art is limited by temperature, and the snow forming wet bulb temperature is generally accepted to be-2 ℃, and the snow forming effect is very poor when the wet bulb temperature is higher than-2 ℃. How to realize efficient snow making under different conditions is a great problem faced by the current snow making machine.
Disclosure of Invention
In order to solve the above problems in the prior art, an object of the present invention is to provide an ultrasonic snow maker and a control method thereof, which are applied to variable ambient temperatures. On the basis of the traditional snow making system, an ultrasonic transducer is introduced. The system has two working modes: a low temperature snowmaking mode and a high temperature snowmaking mode. When the snow making mode of low temperature, close ultrasonic device, when the snow making mode of high temperature, start ultrasonic device promptly, make the growth of blowout water smoke crystallization or promotion existing crystal nucleus, make the snowmaking machine also can stabilize the snow making under high wet bulb temperature, can realize that the snowmaking machine stabilizes the snow making under various operating modes to can carry out accurate control to the snowmaking machine.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an ultrasonic snow making machine applied to variable environmental temperature comprises a nozzle 01, a nucleon 02, a central nucleon 03, an air compressor 04, a water pump 05, an air duct body 06, a variable frequency fan 07, an ultrasonic transducer 08, a control module 09 and a temperature and humidity sensor 10; the nozzle 01, the nuclear device 02, the central nuclear device 03 and the variable frequency fan 07 are positioned in the air cylinder body 06, wherein the nozzle 01 and the nuclear device 02 are arranged along the inner surface of the air cylinder body 06 at intervals, and the central nuclear device 03 is arranged in the center of the air cylinder body 06; the ultrasonic transducers 08 are uniformly attached to the inner surface of the wind cylinder body 06, and the temperature and humidity sensors 10 are attached to the outer surface of the wind cylinder body 06; the inlet of the nozzle 01 is connected with the outlet of the water pump 05; the inlet of the nucleon 02 is respectively connected with the outlets of the water pump 06 and the air compressor 04; the inlet of the central nucleon 03 is respectively connected with the outlets of the water pump 06 and the air compressor 04; the ultrasonic transducer 08 and the temperature and humidity sensor 10 are respectively connected with the controller module 09;
the temperature and humidity sensor 10 is arranged at the shell of the wind cylinder 06 and used for detecting the environment temperature and humidity, outputting corresponding signals to the control module 09, and controlling the on-off of the ultrasonic transducer 08 according to a set control logic; ultrasonic transducer 08 launches the ultrasonic wave when opening, and the ultrasonic wave effect can promote the water smoke nucleation on the water smoke of nozzle 01 spun and nucleus ware 02, central nucleus ware 03 spun crystal nucleus, and the ultrasonic wave promotes existing crystal nucleus fast growth simultaneously, realizes making the high-efficient snow of snow machine.
The ultrasonic transducers 08 and the nozzles 01 are arranged on the inner surface of the air cylinder body 06 in a number of 1: 5-1: 8, namely, 1 ultrasonic transducer 08 is arranged, and then 5 or 8 nozzles 01 are arranged.
The nozzles 01 and the nuclear devices 02 are arranged on the inner surface of the air duct body 06 in a number of 2: 1-6: 1, namely, one nuclear device 02 is arranged for every two, three, four, five or six nozzles 01.
The temperature and humidity sensor 10 outputs signals to the control module 09, the control module 09 adjusts the start and stop of the ultrasonic transducer 08 according to the control logic written in advance, the temperature and humidity detected by the temperature and humidity sensor 10 are transmitted to the control module 09 to calculate the wet bulb temperature TwWet bulb temperature T according to the environmentwControl and adjust to satisfy the snowmaking demand under the different ambient temperature, this snowmaking machine mainly has two kinds of mode: a high temperature snowmaking mode and a low temperature snowmaking mode; the control method specifically comprises the following steps:
step 1: when the snow making machine is started, the control module 09 calculates the wet bulb temperature T according to the ambient temperature and the humidity detected by the temperature and humidity sensor 10wIf T iswAnd when the temperature is lower than minus 2 ℃, the snow making mode is started, the ultrasonic transducer 08 is not started, and the water pump 05 and the air compressor 04 are started.
Step 2: if TwEntering a high-temperature snow making mode and starting an ultrasonic transducer 08, a water pump 05 and an air compressor 04 at the temperature of-2 ℃; when the environmental wet bulb temperature is less than T at minus 2 DEG CwWhen the temperature is lower than 0 ℃, half of the ultrasonic transducers 08 are started; when 0 ℃ is less than TwWhen the temperature is lower than 3 ℃, all the ultrasonic transducers 08, the water pump 05 and the air compressor 04 are started.
Compared with the prior art, the invention has the following advantages:
1. compared with the conventional snow making machine, the ultrasonic wave is adopted to promote the growth of crystal nucleus in the snow making process at high environmental temperature, so that the energy is saved and the reliability is improved.
2. The snow making efficiency and quality of the snow making machine in a high-temperature environment are improved.
Drawings
FIG. 1 is a cross-sectional view of a snowmaker of the present invention;
FIG. 2 is a front schematic view of the snow making machine of the present invention;
fig. 3 is a flowchart of the control method of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
As shown in fig. 1, the ultrasonic snow making machine applied to variable environmental temperature comprises a nozzle 01, a nucleon 02, a central nucleon 03, an air compressor 04, a water pump 05, an air duct body 06, a variable frequency fan 07, an ultrasonic transducer 08, a control module 09 and a temperature and humidity sensor 10; the nozzle 01, the nuclear device 02, the central nuclear device 03 and the variable frequency fan 07 are positioned in the air cylinder body 06, wherein the nozzle 01 and the nuclear device 02 are arranged along the inner surface of the air cylinder body 06 at intervals, and the central nuclear device 03 is arranged in the center of the air cylinder body 06; the ultrasonic transducers 08 are uniformly attached to the inner surface of the wind cylinder body 06, and the temperature and humidity sensors 10 are attached to the outer surface of the wind cylinder body 06; the inlet of the nozzle 01 is connected with the outlet of the water pump 05; the inlet of the nucleon 02 is respectively connected with the outlets of the water pump 06 and the air compressor 04; the inlet of the central nucleon 03 is respectively connected with the outlets of the water pump 06 and the air compressor 04; the ultrasonic transducer 08 and the temperature and humidity sensor 10 are respectively connected with the controller module 09.
The temperature and humidity sensor 10 is arranged at the outer shell of the wind cylinder 06 and is used for detecting the temperature and humidity of the environment, outputting corresponding signals to the control module 09, and controlling the start and stop of the ultrasonic transducer 08 according to a set control logic. When the ultrasonic transducer 08 is started, ultrasonic waves are emitted and act on water mist sprayed out of the nozzle 01 and crystal nuclei sprayed out of the nucleus device 02 and the central nucleus device 03, the ultrasonic waves can promote water mist nucleation, meanwhile, the existing crystal nuclei are promoted to grow rapidly, and efficient snow making of the snow making machine is achieved.
As shown in fig. 2, the ultrasonic transducers 08 and the nozzles 01 are arranged on the inner surface of the air duct body 06 in a number of 1: 5-1: 8, that is, 1 ultrasonic transducer 08 is arranged, and then 5 or 8 nozzles 01 are arranged; the nozzles 01 and the nuclear devices 02 are arranged on the inner surface of the air duct body 06 in a number of 2: 1-6: 1, namely, one nuclear device 02 is arranged for every two, three, four, five or six nozzles 01.
As shown in fig. 3, the temperature and humidity sensor 10 outputs a signal to the control module 09, the control module 09 adjusts the start and stop of the ultrasonic transducer 08 according to the control logic written in advance, the temperature and humidity detected by the temperature and humidity sensor 10 are transmitted to the control module 09 to calculate the wet bulb temperature TwWet bulb temperature T according to the environmentwControl and adjust to satisfy the snowmaking demand under the different ambient temperature, this snowmaking machine mainly has two kinds of mode: a high temperature snowmaking mode and a low temperature snowmaking mode; the control method specifically comprises the following steps:
step 1: when the snow making machine is started, firstly, the control module (09) calculates the wet bulb temperature T according to the ambient temperature and the humidity detected by the temperature and humidity sensor (10)wIf T iswAnd when the temperature is lower than minus 2 ℃, the snow making machine enters a low-temperature snow making mode, the ultrasonic transducer 08 is not started, the water pump 05 and the air compressor 04 are started, water is supplied to the nozzle 01, water is supplied to the nucleus device 02 and the central nucleus device 03, high-pressure gas is supplied, the snow making machine enters a snow making program, and the snow making machine is controlled to start and stop according to whether the snow making quantity is reached or not.
Step 2: if TwEntering a high-temperature snow making mode and starting an ultrasonic transducer 08 at the temperature of > -2 ℃;
when the environmental wet bulb temperature is less than T at minus 2 DEG CwWhen the temperature is lower than 0 ℃, half of the ultrasonic transducer 08 is started, and the water pump 05 and the air compressor 04 are started; when 0 ℃ is less than TwAnd when the temperature is lower than 3 ℃, all the ultrasonic transducers 08, the water pump 05 and the air compressor 04 are started, water is supplied to the nozzle 01, water is supplied to the nuclear device 02 and the central nuclear device 03, high-pressure gas is supplied, and the start and stop of the snow maker are controlled according to whether the snow making amount is reached or not.