Air handling unit with active dust-proof function and active dust-proof method thereof

Abstract

The invention discloses a sand and dust wind channel air handling unit with an active dust-proof function. The air handling unit mainly comprises a non-woven fabric belt, a driving wheel, a dust scraper, a surface cooler, an electric heater, an air feeder, a compression pump, a conveyer, a level gauge, electromagnetic pulse valves, a pulse control meter and a case. Air is filtered by the non-woven fabric belt, and the dust scraper cleans accumulated dust on the non-woven fabric belt; air temperature can be accurately adjusted through the combination of the surface cooler and the electric heater; one wind pipe of the compression pump forms a pneumatic transmission pipeline to transmit recovered sand / dust to a wind channel, so as to realize cyclic utilization of sand / dust and save experimental raw materials; and the other wind pipe of the compression pump is provided with four braches, the three braches are provided with the electromagnetic pulse valves controlled by the pulse control meter, and the three braches respectively blast dust for the non-woven fabric belt, the surface cooler and the electric heater, thereby preventing dust accumulation and saving energy. The sand and dust wind channel air handling unit in the invention is suitable for sand and dust blasting environments, civil buildings and industrial buildings.

Description

technical field [0001] The invention relates to an air-conditioning box with an active anti-dust function and an active anti-dust method for the air-conditioning box. It is suitable for sand blowing and dust blowing environmental tests, and is also suitable for civil buildings such as hospitals, gymnasiums, theaters, and industries such as workshops, workshops, and warehouses. architecture. Background technique [0002] At present, in order to prevent various components in the air conditioning box from being affected by the sand and dust environment, the filter of the air conditioning box (especially the air conditioning box of the sand and dust wind tunnel) adopts a filtering method to remove the sand and dust brought in by the circulating air duct. [0003] The sand-dust wind tunnel is the most commonly used and effective tool for simulating sand-dust environments for aerodynamic experiments. It can be used to test the environmental adaptability and environmental reliabili...

AI Technical Summary

Problems solved by technology

Generally, the air conditioner filter is mainly used to filter 10-100μm dust, and the diameter of some sand dust particles in many sand dust environments will be larger than this range; for example, in the sand dust environment of the sand dust test, the particle size of sand dust particles is 150-850μm, the dust particle size is less than 150μm, and the dust concentration is high and the wind speed is high; therefore, in such a dusty environment, when the above-mentioned air filter is used to filter the wind and sand, the filter is easy to accumulate dust and easily blocked, and the surface cooler, Equipment such as heaters and fans are also prone to dust accumulation

Dust accumulation in the filter leads to increased air resistance and decreased air volume, resulting in a decrease in cooling capacity that cannot meet the temperature control requirements. To ensure the design air flow, the air pressure of the fan must be increased, resulting in increased energy consumption; surface coolers, heaters, fans, etc. Due to the long-term use of the equipment, there is a lot of dust, the resistance is large, and the heat transfer performance is reduced. To ensure the design rating, it is necessary to increase the operating intensity of the refrigeration and heating equipment, resulting in increased energy consumption.

The special sand and dust environment will inevitably cause the filter to be removed and cleaned frequently. Usually, the dry method is used for cleaning (generally repeatable 6-8 times), that is, repeated shaking to scatter the accumulated dust. If necessary, dry blowing and suction and Washing with water (generally can be repeated 4-6 times), the cleaned filter needs to be dried for about 4 days, it is very easy to cause damage to the filter during cleaning, and the cleaning is mostly manual, which is time-consuming, laborious and inefficient

Surface coolers, heaters, fans and other equipment basically use the cleaning liquid wet cleaning method, which is also time-consuming, labor-intensive, inefficient and easy to damage the equipment

It can be seen that the disassembly and cleaning work of the above-mentioned filter is very cumbersome, the service life of the equipment is obviously shortened, and the energy consumption is large, which is far from meeting the conditions for the normal continuous high-intensity operation of the air conditioning box, affecting the quality of the sand and dust test, and even impossible to complete A complete test, the work efficiency is greatly reduced

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