Self-cleaning range hood

Abstract

The invention relates to a self-cleaning range hood. The self-cleaning range hood comprises an outer hood and a fan; the fan comprises a spiral case and an impeller which is arranged inside the spiralcase; a volute tongue is arranged on the spiral case; the self-cleaning range hood also comprises a self-cleaning component provided with a nozzle; an accommodating chamber is formed at the volute tongue; the nozzle is arranged inside the accommodating chamber; the sidewall, close to the impeller, of the volute tongue is provided with an opening for a washing medium to pass through; and the nozzle is provided with a spraying opening corresponding to the opening. According to the self-cleaning range hood provided by the invention, the nozzle of the self-cleaning component is arranged in the volute tongue; the pressure of a flow filed at the position of the volute tongue is minimum, and the volute tongue is nearest to blades of the impeller at a circumference of the overall spiral case, sothe journey of the washing medium after the washing medium is sprayed out is effectively shortened; meanwhile, a pipeline for conveying the washing medium can be conveniently shortened as well; the conveying journey before the washing medium is sprayed out is shortened; therefore heat energy loss of the washing medium is reduced; a self-cleaning effect is improved; and the spraying opening is formed inside the volute tongue, so the integrity of the structure of a fan system is guaranteed, and the problems such as noises and smoke suction efficiency reduction which are caused in a washing process can be prevented.

Description

technical field [0001] The invention relates to a self-cleaning range hood. Background technique [0002] During the use of the range hood, a large amount of oil stains will accumulate on the impeller and filter screen, which can easily cause blockage and increase the load, which will affect the use effect of the range hood. With the continuous progress of self-cleaning technology of range hoods, steam cleaning has been widely used in the field of self-cleaning of range hoods. The basic principle of steam cleaning is that steam is generated by a steam generator, and then the steam is delivered to the nozzle at the end of the nozzle. [0003] For example, the Chinese invention patent application "Fume Machine Cleaning Assembly and Smoke Machine" (application number: 201610563284.4) with application publication number CN 106180036 A discloses a structure in which the hood cleaning assembly includes a pressure plate seat, a pressure plate, and a cleaning nozzle and a sensor, ...

AI Technical Summary

Problems solved by technology

The range hood with the above structure takes up a lot of space, the pipeline is long, and the heat energy loss is large when the steam reaches the impeller, resulting in a greatly weakened cleaning effect

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