Protective cover, fan assembly and outdoor unit of air conditioner

Abstract

The invention discloses a protective cover, a fan component and an air conditioner outdoor unit. The protective cover comprises a grid; the grid comprises multiple circumferential grid strips and multiple radial grid strips; the circumferential grid strips are ring structures different in radius and are arranged around the central shaft of the protective cover sequentially from inside to outside; multiple radial grid strips are used for fixedly connecting multiple circumferential grid strips; and the circumferential grid strips on the protective cover shift toward one side of the protective cover gradually from inside to outside. According to the invention, the protective cover is composed of circumferential grid strips and radial grid strips; the circumferential grid strips are designed in a ball arch shape, and each circumferential grid strip shifts toward an impeller gradually from inside to outside, and the diameter is increased at an equal ratio; and the strength of the grid can be sufficiently guaranteed while improving the airflow efficiency, increasing the air quantity and reducing the noise.

Description

technical field [0001] The invention relates to the technical field of air conditioning, and more specifically relates to a protective cover for a fan, a fan assembly and an outdoor unit of an air conditioner. Background technique [0002] The fan installed in the outdoor unit of the air conditioner is mainly used to exchange heat for the heat exchanger when the air conditioner is running, so that the air can exchange heat with the heat exchanger. A protective cover is usually installed on the outside of the fan of the outdoor unit, and the protective cover generally has two structural forms: a circular grille and a square grille. figure 1 It is a circular grid structure, on the grid there are radial and circumferential grid strips, the radial and circumferential grid strips are ￠5 steel wires, and the radius of several circumferential grid strips increases by 5~ 10mm concentric circles, generally 12 radial grid bars, distributed evenly along the radial direction and fixed ...

AI Technical Summary

Problems solved by technology

However, when the air coming out of the heat exchanger passes through the protective cover, the peripheral air flow is prone to loose wind. During cooling, some of the hot air in this loose wind phenomenon is easily sucked into the heat exchanger of the air conditioner, resulting in The heat exchange efficiency of the heater decreases, and in bad conditions, the compressor may even be forced to stop due to temperature protection, so that the air conditioner cannot be used normally; in addition, when the fan of the outdoor unit of the air conditioner is running, the flow of air Interference with each other, friction with surrounding objects such as grille strips, and the separation effect of the fan blades on the airflow, make the outdoor unit of the air conditioner not only generate noise from the operation of the compressor, but also the operation of the fan. Moreover, when the fan speed increases Larger, the air flow speed increases and the turbulence increases, making the wind noise greater, and the wind noise will increase with the increase of the wind speed.

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