Soot, industrial waste gas, and motor vehicle exhaust are considered to be the three "killers" of air pollution.
The data show that the pollution caused by cooking in the kitchen accounts for 15% to 18% of the air pollution. The soot contains a variety of harmful substances, including acrolein, benzene, formaldehyde, B-formaldehyde, etc., and the large amount of hydrocarbons contained therein are discharged into the atmosphere. Among them, it is easy to mix with other dust to form inhalable particulate matter, which destroys the air quality. Research has confirmed that soot is a risk factor for lung cancer. At present, the existing range hood is mainly equipped with a motor and a fan inside the cabinet, and the suction negative pressure is formed by the motor reversal and the fan blade rotation to realize the suction function of the soot, and the soot is not directly processed. Discharged into the outdoor atmosphere. The suction method is adsorbed on the fan blade while passing through the inside of the tank, and accumulates for a long time, which causes the fan to work and the noise is increased, and the cleaning process needs to be cleaned regularly, and the cleaning process takes time and effort. On the other hand, due to the incomplete separation of soot, a large amount of oily flue gas pollutes the outdoor air, but indoor environmental pollution is moved outside, which is not conducive to environmental protection.
A small number of hoods for purification treatment also have the disadvantage of being expensive. To this end, a new design of condensing electrolysis environmental protection range hood based on air multiplication is proposed, and theoretical modeling analysis and research are carried out.
2 The overall design process of environmental protection range hoods bookmark1 based on air multiplication of condensing electrolysis environmental protection range hood overall modeling diagram and work flow chart as shown in (a), (b), it is mainly composed of three parts: (1) based on The soot suction device with the principle of air multiplication; (2) the condensation adsorption recovery device; (3) the separation and purification of the soot electrolysis to increase the intake air speed, so that the air flow amplification pl has a circular crack with a width of only 1.3 mm inside the device. .
The soot exhaust gas is the first filter air multiplier soot aspirator: most of the soot is high carbon organic matter, and the number of carbon atoms is greater than 5. These high carbon organic substances are easy to achieve condensation under normal temperature and pressure. A rectangular condensing plate parallel to the tank is installed in the condensing fixing box, and when the high-temperature oil smoke contacts the condensing plate, it rapidly condenses to form a liquid and adheres to the condensing plate. A certain amount of oil g flows into the return pipe along the condensing plate, and finally returns to the oil cup for storage to achieve the purpose of recovery. The soot that has not been condensed passes through the mesh of the condensing plate and enters into the adsorbent material to complete the adsorption recovery of the soot. The adsorbent material adopts a high-efficiency resin with micro-nano pore size. According to the similar compatibility principle, the material is introduced into the resin polymer structure to introduce a monomer component having better affinity for organic pollutants, so that the resin can be organically contaminated. The material is absorbed by swelling while adjusting the components of the comonomer, thereby achieving simultaneous absorption of various organic pollutants or selective adsorption of certain organic substances. Through the special molecular structure design, a new resin with both micro-aperture physical adsorption and special chemical adsorption is formed. In addition, the material has a large specific surface area by a special preparation method, and can quickly adsorb and disperse or dissolve organic pollutants. The adsorbent material has the following five advantages: 1. The adsorption speed is fast.
Contact with contaminants is a suction, which has great advantages over most of the adsorbent materials that require more than 4 hours to saturate; 2. The adsorption capacity is large.
It can adsorb more than 10 times its own weight of organic matter, and the adsorption amount is tens to hundreds of times of the current common activated carbon; 3. The adsorption selectivity is good. Only oil absorption and lipophilic organic matter, no water absorption; 4, good oil retention. Since the material has both physical adsorption of micro-nano pore size and chemical adsorption of resin swelling absorption, its oil holding ability is strong, and after the pollutant is adsorbed, it will not fall back under the action of gravity; 5. Good reusability . After the material is saturated in adsorption, the contaminant can be desorbed and reused.
4 Application Analysis The air-doubled condensing electrolysis environmental protection range hood significantly improved the shortcomings of the existing range hood, such as unsatisfactory suction, low suction efficiency and oily spillover.
The original fan blade is rotated to form a low-pressure suction soot, which is optimized as a soot aspirator based on the air multiplication principle, which eliminates the blade structure and overcomes the shortcomings such as vibration, noise, and energy consumption caused by the adhesion of the blade to the oil. The residual soot entering the interior of the range hood is condensed and fixed for adsorption recovery, ensuring the cleanness of the internal structure of the range hood and improving its service life. The residual flue gas is ionized and decomposed, oxidized and sterilized, and the exhaust gas is harmlessly discharged to protect the environment.
5 Conclusion This paper proposes a new type of air-multiplying condensing electrolysis environmental protection range hood, and analyzes and demonstrates its feasibility. And the range hood is a must-have product for every family and catering industry. The use of a new range hood that protects the environment and saves energy is a trend in the future, so it has a wide market application value.
a), male, Shandong Weifang, undergraduate, research direction: marine engineering, electromechanical technology.
(Finish)
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