Central air conditioning, if not timely cleaning will bring to life what are the disadvantages?
1, the air in the closed space displacement effect is poor:
Due to air conditioning environment, to save energy most are set for the closed and semi-closed space, indoor air most recycling, mainly rely on the purity of the air filter air conditioning itself and timing right amount fresh air to maintain, so relatively outdoor air freshness opaque.
2, serious dust, bacteria:
Because the central air conditioning is to rely on air duct and the processing of outlet air into the room, after air duct in confined Spaces, and all kinds of outdoor air suspended particles cannot be completely cut off by central air-conditioning filter unit, therefore, fine dust into the air duct on the adhesion on the inner wall of the duct, narrow, closed cleaning is difficult, and most of the air duct long it forms a large amount of dust. Dust and the who is easy to develop all kinds of harmful microorganisms, such as: viruses, bacteria, fungi, doxycycline, legionella, coronavirus, etc.
3, easy to become a parasitic animals and insects activities within a duct space:
Because the air duct layout mostly in building inside condole roof, subtle, coupled with suitable air duct in the four seasons temperature and humidity, so often become the pathogens and insects parasitic activity space, such as rats, cockroaches, etc. (according to a report in Shanghai, Shanghai building cleaning the central air-conditioning duct cleaning out altogether two tons of garbage, there are a lot of rats, insect body.)
How to choose and buy the central air conditioning cleaning equipment:
One, to see whether the equipment configuration of the species to achieve on March 1, 2006 the ministry of health issued the "central air conditioning ventilation system cleaning specification in public places" in the six kinds of appendix M?
2, whether its various technical indicators meet the national on November 1, 2011, the latest documents "central air conditioning ventilation system cleaning industry technical management rules" of the technical standards.
Third, to look at the safety of equipment, technology advanced, use convenience, cleaning efficiency and quality, maintenance cost and transportation cost.
Four, the national standard of technical indicators are briefly as follows:
1, the requirements of dust capture device volume more than 4500 cubic meters/hour, filtering efficiency more than 99.5%, more than three filtering device, working voltage 220 v and below 85 db noise, leakage protector, complete differential pressure alarm, etc.
2, air duct cleaning job to have all the video monitoring control devices, do not allow the blind, to be able to record internal condition clearly duct for image data and file the record.
3, detecting robot camera should be able to horizontally rotate 360 °, 180 ° pitch direction, light follow-up, crawling slope is not less than 40 degrees, the barrier height not less than 40 mm, etc.
4, cleaning robot the distance single direction of no less than 20 meters, cleaning brush torque is not less than 3 n. m, capable of duct gap and effective internal flat, concave and convex, cleaning, etc.
5, duct with duct cleaning device must reach 90 ° included Angle, should be able to perform a height 80 mm - 600 mm round, square, rectangular duct (width unlimited) and vertical duct cleaning work.
6, disinfectant disinfection device in central air-conditioning duct, according to the ministry of health of the technical standard for disinfection.
7, parts cleaning device can effectively clean screen pack and fan coil units, etc.
Five, carefully analyzed the overseas import a wide variety of air conditioning cleaning equipment: 380 v and 220 v power supply voltage difference, has the small spirit and difference of large bulky and cleaning method are:
1, motor driven flexible shaft drives the cleaning brush.
2, compressed air through the pipeline gas drive pneumatic hammer, air knife, whip to vibrate, cutting, whips, purging cleaning.
Due to some complex shape and internal structure (built-in air valve, fire valve, muffler, etc.), larger diameter of the duct, air handling units inside still must by workers holding a vacuuming PaTou, electric cleaning tools such as brush, qi whip into the pipeline cleaning manually or 80-90% of total engineering duct is completed by workers in the duct cleaning device for external use handheld, pneumatic cleaning device itself does not have the ability to carry the camera and cables, belongs to the blind, cleaning quality can't guarantee at the same time, there is a potential safety hazard is not used by the health authorities recommend. Driven by electric machine soft brush to clean the best means is recognized in the industry, cleaning the soft shaft manufacturing length less than 15 meters, however, compared with the manufacturing soft shaft 30 meters in length, forcible entry cleaning the mouth of the cave and closed the hole of the workload and materials consumption will be doubled, the efficiency vary more than double, only 8.5 meters long tornado system its effective cleaning only about 5 meters in length, more because of its more than 80 millimeter wave metal vacuum tube diameter and core winding type soft shaft weight is bigger, the diameter of big brush provide support cannot make wave vacuum tube is in the center of the duct so the equipment cleaning duct height is only 250 mm, maximum limit its ability of operation. Among other handheld cleaning equipment is an important technical performance is: the soft shaft have excellent positive and negative change in function, the ability is the guarantee to the ultra flat rectangular duct cleaning in place the necessary functions, not all soft shaft transmission are endowed with the function, multi-fiber winding form of soft shaft are made by machining when winding direction determine the direction of rotation, reverse rotation is easy to damage or reverse rotation is strictly forbidden. Face at the end of the spring hose, most equipment suppliers are unable to provide a professional cleaning equipment, but the latest documents provisions of the state at the end of light air tube for nondestructive cleaning, there is no omission. So can purchase a spring cleaning hose, small diameter insulation pipeline of special equipment is a must.