Volute of range hood, fan, range hood and volute cleaning method

Abstract

The invention relates to a volute of a range hood, a fan, the range hood and a volute cleaning method. The volute comprises a shell, wherein the shell comprises two cover plates arranged in a front-back spaced mode, and an annular wall connected between the two cover plates; an air inlet is formed in at least one cover plate; the two cover plates and the annular wall jointly define an air outlet located in the top of the shell; at least two grooves which are arranged at intervals in the axial direction of the shell are formed in the inner circumferential wall of the annular wall; each groove extends in the circumferential direction of the annular wall; and a cleaning piece is arranged in the shell and comprises connected scraping plates which are consistent with the grooves in number and can slide along the grooves. According to the volute of the range hood, the fan, the range hood and the volute cleaning method provided by the invention, the cleaning piece directly cleans the inner wall of the shell, so that the situation that oil dirt is accumulated on the inner wall of the shell after long-term use, and the fan performance is affected is avoided; and in addition, no extra oil filtering or oil absorbing component is needed, so that the number of related components is small, and the structure is simple.

Description

technical field [0001] The invention belongs to the technical field of range hoods, and in particular relates to a volute of a range hood, a blower fan, a range hood and a method for cleaning the volute. Background technique [0002] Kitchen ventilation conditions and the removal of oily fume and exhaust gas produced during cooking have always been one of the troubles in every home. Now range hoods have become an indispensable household appliance in the kitchen. The air volume and wind pressure are the measure An important indicator of the quality of the range hood, the biggest influence on the air volume and wind pressure of the range hood is the fan volute assembly, which is the core component of the range hood. After the range hood is used for a long time, a large amount of oil will adhere to the volute, which is difficult to clean, and it will affect the cleaning ability of the range hood for a long time. [0003] For the problem of oil pollution in the volute, there ar...

AI Technical Summary

Problems solved by technology

[0005] This patent does not directly clean the casing (that is, the casing below), but sets a fixed cylinder and a roller so that the oil fume is adsorbed on the outer surface of the roller, and then the oil is scraped off by the oil scraper, although there is a roller , but it does not guarantee that the oil will only adhere to the drum and not the inner wall of the casing. After long-term use, the accumulation of oil on the inner wall of the casing will still affect the performance of the fan; Rollers, etc., also cause many parts involved and complex structure

[0006] Another example is the patent No. CN201710842373.7 (published number is CN 109519989 A) Chinese invention patent application disclosed "A Fan and Range Hood Using the Fan", there is also the problem of the above-mentioned patent, the cleaning brush is not directly Clean the shell (that is, the shell below), but clean the oil filter screen additionally arranged at the air inlet, which does not guarantee that no oil will accumulate on the inner wall of the shell

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