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External fan control method and device and air conditioner

A control method and technology of an external fan, applied in the field of external fan control, air conditioners, and devices, can solve problems such as energy waste and inaccurate control of the speed of the external fan

Active Publication Date: 2021-09-10
NINGBO AUX ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem solved by the present invention is that in the prior art, during the low-load operation of the air conditioner, the speed control of the external fan is not accurate enough, resulting in excessive energy waste

Method used

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  • External fan control method and device and air conditioner
  • External fan control method and device and air conditioner
  • External fan control method and device and air conditioner

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Embodiment Construction

[0061] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0062] see figure 1 , figure 1 Shown is a flow chart of the method for controlling the external fan provided in this embodiment. The method for controlling the external fan is applied to an air conditioner. During the operation of the air conditioner at a low load, the method for controlling the external fan can precisely adjust the speed of the external fan on the premise of meeting the exhaust pressure requirement, thereby avoiding energy waste. The external fan control method provided in this embodiment includes the following steps:

[0063] Step S101, acquiring the exhaust pressure of the air conditioner in real time.

[0064] In this embodiment, by installing a pressure sensor at the air outlet of the compressor of the air conditio...

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Abstract

The invention provides an external fan control method and device and an air conditioner, and relates to the technical field of air conditioners. The external fan control method comprises the steps of obtaining the exhaust pressure of the air conditioner in real time; under the condition that the exhaust pressure falls into a first preset pressure interval, calculating a first theoretical adjusting quantity according to the exhaust pressure; adjusting the rotating speed of an external fan of the air conditioner according to the first theoretical adjusting quantity; under the condition that the exhaust pressure falls into a second preset pressure interval, obtaining a heat exchange temperature difference of an outdoor heat exchanger, wherein an upper limit value of the second preset pressure interval is equal to a lower limit value of the first preset pressure interval; calculating a second theoretical adjusting quantity according to the heat exchange temperature difference; and adjusting the rotating speed of the external fan according to the second theoretical adjusting quantity. According to the external fan control method provided by the invention, on the premise that the exhaust pressure requirement is met, the rotating speed of the external fan can be accurately adjusted, and energy waste is avoided.

Description

technical field [0001] The present invention relates to the technical field of air conditioning, in particular, to a method and device for controlling an external fan, and an air conditioner. Background technique [0002] In actual application, the air conditioner operates at full load in the early stage, quickly reducing the room temperature, and operates at low load most of the time in the later stage. [0003] The air conditioners on the market still adjust the speed of the external fan according to the outdoor ambient temperature through preset parameters during low-load operation. Although this kind of adjustment method can effectively prevent the exhaust pressure from being too high, it will also cause the speed adjustment of the external fan to be inaccurate, resulting in excessive energy waste. Contents of the invention [0004] The problem solved by the invention is that in the prior art, during the low-load operation of the air conditioner, the speed control of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/30F24F11/64F24F11/871F24F11/88F24F110/40F24F140/20
CPCF24F11/30F24F11/64F24F11/871F24F11/88F24F2110/40F24F2140/20
Inventor 宋磊邓赛峰张稳刘合心
Owner NINGBO AUX ELECTRIC
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