Air inlet device with air inlet range capable of being widened

Abstract

An air inlet device with the air inlet range capable of being widened comprises a fixed tray and an oil collection tray mounted in the fixed tray. A plurality of air guide pipes are evenly distributed on the periphery of the oil collection tray in an array manner. The air guide pipes are located between the fixed tray and the oil collection tray and connected with a fume suction opening of a draught fan module. The air inlet device has the beneficial effects that the structure is simple, assembly is convenient, the production cost is low, and market competitiveness is improved; by means of the unique cyclone fume suction opening design, a range hood can be accelerated and rotated after entering the air guide pipes, vortex airflow is formed, and the air suction capacity of the range hood is enhanced; cooking fumes pass through the inclined air guide pipes and can be fully in contact with the inner walls of the air guide pipes, oil stains can be liquefied on the pipe walls, and the separation function of the oil stains is achieved; the novel appearance design is achieved, traditional stiff design is changed, and the buying inclination of users is fully improved.

Description

technical field [0001] The invention relates to a range hood accessory, in particular to an air intake device capable of enlarging the air intake range. Background technique [0002] The kitchen range hood is one of the widely used household fans, which connects the physical and mental health and interests of millions of users. Usually, the range hood device uses a motor to drive the blades (hour wheel, leaf fan) to rotate, and uses centrifugal force to extract and separate the oil fumes. At present, most of the range hood (fan) blades adopt or imitate the traditional "wheel type (squirrel cage)" impeller or "spiral type" blade (impeller, blade fan) abroad for more than one hundred years. Because most of the blades are planar with short axial stroke, the action time is short, the suction and discharge force is small, and the blade structure does not conform to the principle of three-dimensional vortex force, so the air flow resistance is large and the noise is large, and mo...

AI Technical Summary

Problems solved by technology

Because most of the blades are planar with short axial stroke, the action time is short, the suction and discharge force is small, and the blade structure does not conform to the principle of three-dimensional vortex force, so the air flow resistance is large and the noise is large, and most of them are difficult (or barely) to meet the national standard for noise control. Below 75db, the separation of oil and gas is not complete, and the accumulated oil on the blades is not easy to clean, which affects the service life of the range hood (fan), and more seriously, the high noise standard affects the physical and mental health of users.

[0003] In addition, most of the air inlets of existing range hoods are planar structures. Due to the large area of ​​the air inlets, the relative wind pressure is low, so the smoking ability of the range hood is poor, causing some oil fumes to escape easily, thus affecting the performance of the range hood. smoking efficiency

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