Purification environmentally-friendly oil and smoke discharging draught fan

Abstract

The invention discloses a purification environmentally-friendly oil and smoke discharging draught fan. The purification environmentally-friendly oil and smoke discharging draught fan comprises a base, an outer shell, a main shaft, a centrifugal separator, a wind wheel and a driving mechanism. The centrifugal separator comprises a fixed plate and an outer frame, wherein the peripheral side face of the fixed plate radiates and extends outwards to form a plurality of beam hangers which at least include the beam hangers on the outer layer and the beam hangers on the inner layer. The beam hangers on the two layers are arranged in the axial direction. Each beam hanger on the outer layer and the corresponding beam hanger on the inner layer are arranged in a staggered mode. The main shaft is driven by the driving mechanism to rotate so that the centrifugal separator and the wind wheel can synchronously rotate along with the main shaft. When oil-smoke gas flow passes through the centrifugal separator, due to the fact that centrifugal force is larger than centripetal force, greasy dirt is thrown onto all the beam hangers through matching with the action of the gravity; the greasy dirt flows into an oil collector along the beam hangers in the high-speed running process of the centrifugal separator, and therefore the aim of conducting efficient purification on oil and smoke is achieved; the concentration of discharged oil and smoke is lower than 2 mg / m<3> after purification, the purifying rate is 99.99%, and the environmental protection standard is completely met.

Description

technical field [0001] The invention relates to the technology in the field of ventilation equipment, in particular to a purification and environmental protection type oil fume exhaust fan. Background technique [0002] The range hood fan is a kitchen appliance that purifies the kitchen environment. It is installed on the top of the kitchen stove, which can quickly take away the waste burned by the stove and the harmful oil fume produced during the cooking process, and discharge it outside, reduce pollution, purify the air, and have the safety guarantee function of anti-virus and explosion-proof. Range hood fans have become indispensable kitchen equipment in modern hotels, hotels, canteens, etc. [0003] However, at present, the range hood fan does not have the function of purifying the oil fume. It only relies on the motor to drive the impeller to directly extract the oil fume from the inside of the kitchen to the outside. In this way, although it can extract the oil fume ...

AI Technical Summary

Problems solved by technology

[0003] However, at present, the range hood fan does not have the function of purifying the oil fume. It only relies on the motor to drive the impeller to directly extract the oil fume from the inside of the kitchen to the outside. In this way, although it can extract the oil fume inside the kitchen and purify the kitchen environment, However, exhausting unpurified oil fumes will directly pollute the external environment, which is not in line with the current concept of green environmental protection

In addition, the current range hood fan has a small air volume and low air pressure, which leads to the problem of low smoke exhaust efficiency

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