Air conditioner and constant-air-volume control method, control device and control system of indoor fan thereof

Abstract

The invention discloses an air conditioner and a constant-air-volume control method, a control device and a control system of an indoor fan thereof. The constant-air-volume control method of the indoor fan of the air conditioner comprises the steps of: obtaining an air pressure characteristic curve and an initial air volume Q1 of the indoor fan under a D air gear; acquiring present operation parameters of the indoor fan under the D air gear; solving a present air volume Qn under the D air gear according to the present operation parameters and the air pressure characteristic curve; calculating change values of the initial air volume Q1 under the D air gear and the present air volume Qn; adopting an optimizing algorithm to determine a constant-air air gear matched with the initial air volume Q1 when the change values reach preset thresholds; and actuating an air gear adjusting instruction to adjust the indoor fan to the constant-air air gear. The air conditioner and the constant-air-volume control method, control device and control system of the indoor fan thereof can realize real-time air volume and the initial air volume of the indoor fan to approximate to or even achieve the effect of constant air volume as far as possible, have no need to adopt a constant-air-volume motor, are low in cost, and guarantee the use comfort of the air conditioner.

Description

technical field [0001] The invention belongs to the technical field of electrical appliance manufacturing, and in particular relates to a method for controlling the constant air volume of an air-conditioning indoor fan, a device for controlling the constant air volume of an air-conditioning indoor fan, and a control system, including the control system and the air conditioner. Background technique [0002] Such as figure 1 Shown is a schematic diagram of the air pressure characteristic curves of common air-conditioning indoor units using constant air volume motors and non-constant air volume motors. It can be seen from the figure that unless a constant air volume motor is used, with the use of the product, the air duct system will Accumulation of dust will lead to a gradual decrease in the air volume under the same windshield. Especially in places with a lot of oily smoke such as the kitchen, the air volume decay speed will be much faster. However, constant air volume moto...

AI Technical Summary

Problems solved by technology

However, constant air volume motors are expensive and difficult to popularize in the industry

[0003] Especially for North American air duct products, since the market habit is to fix a windshield when the air conditioner is installed, the windshield will not be adjusted artificially during use. In this case, if the air volume is greatly attenuated, it will seriously affect the user's comfort Spend

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