Air duct assembly, fan and range hood

Abstract

The invention relates to the field of kitchen appliances, and discloses an air duct assembly, a fan and a range hood. The air duct assembly comprises an air duct surrounding plate, a first air duct side plate and a second air duct side plate, mounting clamping grooves are formed in the two side edges of the air duct surrounding plate correspondingly, the peripheral side edges of the first air duct side plate and the second air duct side plate are clamped into the mounting clamping grooves correspondingly, and the air duct surrounding plate is divided into a first surrounding plate body and a second surrounding plate body in the circumferential direction; an air outlet of the air duct is formed in the first coaming body, the first coaming body comprises a first straight part and a first bent part which are connected, a first clamping groove is formed in the first bent part, the second coaming body comprises a second straight part and a second bent part which are connected, a second clamping groove is formed in the second bent part, and a second clamping groove is formed in the second bent part. The first clamping groove and the second clamping groove are spliced to form an installation clamping groove, the farthest end, in the radial direction, of the first bent part exceeds the first straight part, and the farthest end, in the radial direction, of the second bent part does not exceed the second straight part. The structure is simple, installation is convenient, and the space utilization rate is high.

Description

technical field [0001] The invention relates to the field of kitchen appliances, in particular to an air duct assembly, a fan and a range hood. Background technique [0002] The range hood is a kitchen appliance that purifies the kitchen environment. It is installed above the stove in the kitchen. It can quickly remove the waste from the stove and the fumes that are harmful to the human body during the cooking process, and discharge it outdoors to reduce indoor pollution. It can purify indoor air, and has the function of anti-virus and explosion-proof security. [0003] The fan of the range hood includes an air duct assembly, a motor and an impeller. The air duct assembly guides the high-speed airflow driven by the rotation of the impeller, and converts a part of the kinetic energy of the flowing gas into static pressure. The existing air duct components are usually assembled by welding, riveting, and pressing, but these assembly methods have their shortcomings. The precis...

AI Technical Summary

Problems solved by technology

The assembly of existing air duct components usually adopts assembly methods such as welding, riveting and crimping, but these assembly methods have their shortcomings

The accuracy of the welding assembly method is insufficient. Due to the welding requirements, a cold plate must be used, and surface treatment is required to cover the weld scars, and the appearance is not exquisite enough.

The installation process of the riveting assembly method is more complicated and the cost is higher

The edge-pressing assembly method increases the feature of flanging, which will increase the outer diameter of the air duct, waste the internal space of the range hood, and affect the smoke exhaust performance of the range hood

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