Jet flow type smoke exhaust ventilator

Abstract

Disclose is a range hood, comprising power machine which is fixed in sleeve out of the area covered by range hood cap, trumpet shaped contracted tapered air hose extending into lampblack receiving chamber with its top linked with the sleeve and a jetburner on its lower part, lampblack receiving chamber whose lower part is trumpet shaped contracted and top is enclosed and side wall is linked to lampblack inlet, columnar mixing tube whose top is linked with bell mouth of the chamber, diffuse cell whose top is linked with lower part of columnar mixing tube, arched exhaust pipe whose top is linked to bell mouth of diffuse cell. Air hose and its jetburner, lampblack receiving chamber, mixing tube, diffuse cell and air exhausting pipe are linked orderly along the central axial line .The jetburner whose cross sectional area is smaller than that of mixing tube , is on the air inlet of mixing tube, and lampblack inlet and contact interface of lampblack receiving chamber are at the back of jetburner. The invention has simple and compact structure, reliable service, excellent effect of exhausting lampblack, no oil sludge and convenient cleaning and maintenance.

Description

technical field [0001] The invention relates to a jet type range hood for removing oil fumes generated during cooking in a kitchen. Background technique [0002] At present, the range hoods used in the kitchen and sold in the market are basically in-line type. It relies on the negative pressure generated by the motor fan to directly absorb the oil fume from the stove top and discharge it from the air duct. The common problem of this kind of range hood is that the motor, fan and opening and closing valve are easy to accumulate grease during use, which affects the use effect of the range hood. It is extremely inconvenient to clean and maintain daily. service life. Therefore, developing novel range hoods has become an urgent need for people's lives, and has also become an extremely active technical research field. Chinese patent 03112514.x discloses a kind of " air-suction range hood " (disclosure date March 3, 2004), and it is to arrange a blowing fan and fan cover thereof o...

AI Technical Summary

Problems solved by technology

The common problem of this kind of range hood is that the motor, fan and opening and closing valve are easy to accumulate grease during use, which affects the use effect of the range hood. It is extremely inconvenient to clean and maintain daily. service life

The problem is that the wind blown by the conical blower immediately enters a large-volume smoke hood, and the speed drops rapidly. The effect of oil suction is bound to be poor; if a high-power motor is installed, it will undoubtedly increase energy consumption

The existing problems are similar to those of the "air-suction range hood" patent. It is difficult for the high-speed jet to generate the partial vacuum necessary to absorb a large amount of oil fume, and the effect of oil suction is not good.

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