Range hood and working method

Abstract

The invention relates to a range hood. The range hood comprises a machine shell with an air channel and a fan arranged in the air channel, wherein a suction opening is formed in the lower portion of the machine shell; an air guide component is arranged at the position, close to the suction opening, in the machine shell and comprises at least one flow guide plate; the area, close to the suction opening, in the machine shell is divided into at least two air inlet channels through the flow guide plates; the flow guide plates are connected to the interior of the machine shell in a front-back swinging mode; a driving mechanism capable of driving the flow guide plates to swing is further arranged on the machine shell; and air velocity transducers are arranged on the machine shell and correspond to the air inlet channels. The invention further provides a working method of the range hood, after the range hood is started, the thickness value of the upper end of each air inlet channel is correspondingly adjusted according to the air speed data of each air inlet channel, and then air speed balance is achieved. According to the range hood and the working method thereof, vortexes can be reduced, air volume loss can be reduced, and noise can be lowered.

Description

technical field [0001] The invention relates to a range hood, and also relates to a working method of the range hood. Background technique [0002] With the popularization of range hood applications, people have higher and higher requirements for range hoods, especially the noise problem, which is a difficult technical problem for range hoods. [0003] The air suction port of the existing range hood is usually equipped with a deflector to realize the guiding effect of the oil fume, avoid air flow disturbance, and then achieve the effect of reducing noise, such as the Chinese utility model patent " Range Hood Air Duct Structure", wherein the disclosed range hood air duct structure is provided with a deflector, the deflector is arranged in the main chamber, the deflector is arranged under the volute assembly, and the deflector It is arranged in front of the smoke collecting cavity, and the upper part of the deflector is bent forward to form a bent part, and the bent part exte...

AI Technical Summary

Problems solved by technology

However, when oil fume enters the main chamber through the suction port, the gas flow velocity difference between the front and rear sides of the main chamber is relatively large at the position close to the suction port. Aerodynamic noise

However, since the above-mentioned deflector is set at a position away from the air suction port, and the position of the deflector is fixed, it cannot effectively eliminate the startup noise caused by the difference in flow velocity at the suction port, and at the same time, the loss of air volume is also large.

Images