Self-cleaning structure of range hood

Abstract

The invention relates to a self-cleaning structure of a range hood. The self-cleaning structure of the range hood comprises a steam spraying pipe arranged on an impeller of the range hood, and a driving structure capable of rotating the steam spraying pipe relative to the impeller; the driving structure is arranged in an intake port of the impeller, and is connected with a first end of the steam spraying pipe; a second end of the steam spraying pipe extends into the impeller, and can form an annular motion trajectory in inner periphery space of the impeller; a second end of the steam sprayingpipe is closed; and a nozzle for spraying out steam is formed in the side wall. The driving structure is not needed to provide power to the steam spraying pipe, but is only needed to enable the firstend of the steam spraying pipe to conveniently introduce air and to achieve free rotation; when steam is sprayed from the steam spraying pipe to blades of the impeller, as the blades have a certain radian, the blades can apply reactive force to the steam spraying pipe through steam to push rotation of the steam spraying pipe; and the rotating speed of the steam spraying pipe is lower, and the timeof the steam continuously acting on one local area of the impeller is longer, so that effective scouring of the impeller by the steam is facilitated, and better cleaning effect is achieved.

Description

technical field [0001] The invention relates to the technical field of self-cleaning of a range hood, in particular to a self-cleaning structure of an impeller of a range hood. Background technique [0002] During the use of the range hood, a large amount of oil will accumulate on the impeller and the filter, which will easily cause blockage, increase the load, etc., and affect the use effect of the range hood. With the continuous advancement of range hood self-cleaning technology, steam cleaning has been widely used in the self-cleaning field of range hoods. The basic principle of steam cleaning is to generate steam from a steam generator, and then deliver the steam to the nozzle at the end of the spray pipe. The steam is quickly ejected from the nozzle to wash the impeller and the volute for cleaning. [0003] For example, the Chinese invention patent application with application publication number CN104421988A "Steam generator, cleaning system and range hood" (applicatio...

AI Technical Summary

Problems solved by technology

[0004] (1) When the motor is inching, the impeller rotates too fast, which will suck away the high-temperature steam in the volute, reducing the internal temperature of the volute, which is not conducive to the melting of grease;

[0005] (2) When the speed of the impeller is too fast, the time for the steam to continuously act on a certain area of ​​the impeller will be correspondingly shortened, which will weaken the washing effect of the steam and affect the cleaning effect;

[0006] (3) The steam from the nozzle can only be sprayed and cleaned against a certain part of the volute, and cannot clean the entire inner surface of the volute, resulting in uneven cleaning effect

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