Upwind cone-shaped full air curtain split type injection range hood

Abstract

The invention discloses an upwind cone-shaped full air curtain split type injection range hood which mainly comprises an annular air-blowing tube which has the diameter greater than the aperture of a wok, and an air-blowing opening having a certain angle of inclination, is arranged slightly lower than the opening of wok by three supporting hooks arranged circumferentially and uniformly, and connected with a fan by a lower connecting air hose. A lampblack collecting hood assembly as well as a convergent-divergent tube and a lampblack exhaust tube successively connected with the lampblack collecting hood assembly are arranged into a shell of the range hood, a throat of the convergent-divergent tube is provided with an air nozzle, and the air nozzle is connected with the fan by an upper connecting air hose. When the fan operates, airflows are respectively sprayed from the air-blowing opening and the air nozzle, the airflows sprayed from the air-blowing opening form a cone-shaped air curtain, and form negative pressures at the throat of the convergent-divergent tube, and the airflows sprayed from the air nozzle are also form negative pressures. The lampblack sealed in the cone-shaped air curtain is exhausted under the joint action of drainage and negative pressures of a flowing air curtain. The range hood has the advantages of simple structure, energy and electricity conservation, no lampblack leakage, thorough lampblack exhaust, and small noise, and the like, and is convenient to assembly, easy to clean; and therefore, the range hood has a wide market prospect.

Description

Technical field [0001] The invention relates to the technical field of household kitchen range hoods. Background technique [0002] Existing range hoods use the suction effect of the blade type exhaust fan to suck the oil fume, and the oil fume is directly discharged through the blades, motor, and air duct forcibly, which has the disadvantages of large power consumption and high operating noise, and with the prolongation of use time, the adhesion Oil stains on blades, rotating shafts, motors, and air duct walls increase, power and noise will continue to increase, and oil stain cleaning is extremely inconvenient. Contents of the invention [0003] The present invention provides an up-blown conical full-air-curtain split ejection range hood, in which the annular air-injection pipe with an air-injection port is placed slightly lower than the mouth of the frying pan through three supports uniformly distributed on the circumference, and It is connected to the fan through the l...

AI Technical Summary

Problems solved by technology

[0002] Existing range hoods use the suction effect of the vane type exhaust fan to suck the oily fumes, and the oily fumes are directly discharged through the blades, motors, and air ducts forcibly, which has the disadvantages of large power consumption and high operating noise, and as the use time increases, the adhesion Oil stains on blades, shafts, motors, and air duct walls increase, power and noise will continue to increase, and oil stain cleaning is extremely inconvenient

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