Insect-proof fan needing no dust removal

• Main Authors: XI LIN, XI XIAOPING
• Format: Patent
• Language: Chinese; English
• Published: 16.11.2018
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The invention relates to the field of fans, in particular to an insect-proof fan needing no dust removal. An air pipe includes a main air inlet, a main air outlet, a first air flue and a second air flue. The middle of the first air flue is provided with a venturi, the tail end of the second air flue is provided with a reducing pipe, the reducing pipe is communicated with the narrowest position ofthe venturi, an axial fan is disposed in the first air flue, a filtering device includes an insect-proof dustproof cover mounted on the main air inlet, the annular surface of the insect-proof dustproof cover abuts against an air inlet of the first air flue and covers the air inlet of the first air flue, an air outlet of the insect-proof dustproof cover is provided with an insect-proof net, and theannular surface of the insect-proof dustproof cover is sleeved with a dust filer net. The atmosphere is absorbed into the insect-proof dustproof cover by the main air inlet, the venturi makes the reducing pipe and the second