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Whole course cold air preventing control method for variable frequency air conditioner

A frequency conversion air conditioner and control method technology, applied in heating and ventilation control systems, space heating and ventilation, heating methods, etc., can solve problems affecting user comfort, cold wind blowing out, etc., to improve user comfort and prevent power-on blowing The effect of cold wind

Active Publication Date: 2017-09-15
AUX AIR CONDITIONING LTD BY SHARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing anti-cold air control method of the inverter air conditioner has the following technical problems: after exiting the anti-cold air function when starting up, when the ambient temperature is close to the set temperature, the inverter air conditioner will run at a low frequency, and the coil temperature will drop at this time. There will be a problem of cold air blowing out; and fixed-frequency air conditioners will not have this problem because the frequency remains unchanged; therefore, the inverter air conditioner adopts the same anti-cold air control method as the fixed-frequency air conditioner, and it will blow out cold air during the heating mode operation, which will affect users. Comfort of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In this example, set TE1 to 28°C, TE2 to 40°C, TE3 to 34°C, TE4 to 38°C, TA1 to 20°C, TY1 to 10S, TY2 to 90S, TF1 to 2min, ΔT1 to -1°C, ΔT2 to -3°C, the indoor ambient temperature is 10°C when the machine is turned on, the wind speed is set by the remote control as medium speed wind, the set temperature TS is 28°C, when the anti-cold wind function is turned off, the indoor ambient temperature TA is 26°C, the control process as follows:

[0031] (1) Turn on the machine in heating mode and enter the anti-cold air function; since the indoor ambient temperature TA is less than 20°C, only when the compressor running time TY exceeds 90s, or the coil temperature TE is greater than 28°C, the indoor unit will The main board controls the indoor fan to start running with low-speed wind; when the coil temperature TE is greater than 40°C, or the low-speed wind running time TF exceeds 2 minutes, the main board of the indoor unit controls the inverter air conditioner to exit the power...

Embodiment 2

[0034] In this example, set TE1 to 29°C, TE2 to 38°C, TE3 to 31°C, TE4 to 36°C, TA1 to 18°C, TY1 to 15S, TY2 to 110S, TF1 to 1min, ΔT1 to -2°C, ΔT2 to -4°C, the indoor ambient temperature is 19°C when the machine is turned on, the wind speed is set by the remote control as medium speed wind, the set temperature TS is 29°C, when the anti-cold wind function is turned off, the indoor ambient temperature TA is 28°C, the control process as follows:

[0035] (1) Turn on the machine in heating mode and enter the anti-cold air function; since the indoor ambient temperature TA is greater than 18°C, when the compressor running time TY exceeds 15S, or the coil temperature TE is greater than 29°C, it can be controlled by the main board of the indoor unit The indoor fan starts to run with low-speed wind; when the coil temperature TE is greater than 38°C, or the low-speed wind running time TF exceeds 1min, the main board of the indoor unit controls the inverter air conditioner to exit the p...

Embodiment 3

[0038] In this example, set TE1 to 30°C, TE2 to 42°C, TE3 to 35°C, TE4 to 40°C, TA1 to 22°C, TY1 to 20S, TY2 to 120S, TF1 to 3min, ΔT1 to -0.5°C, ΔT2 to -2°C, the indoor ambient temperature is 5°C when the machine is turned on, the wind speed is set by the remote controller as high-speed wind, the set temperature TS is 30°C, and the indoor ambient temperature TA is 24°C when the anti-cold wind function is turned off, the control process is as follows :

[0039] (1) Turn on the machine in heating mode and enter the anti-cold air function; since the indoor ambient temperature TA is less than 22°C, only when the compressor running time TY exceeds 120S, or the coil temperature TE is greater than 30°C, the indoor unit will be activated. The main board controls the indoor fan to start running with low-speed wind; when the coil temperature TE is greater than 42°C, or the low-speed wind running time TF exceeds 3 minutes, the main board of the indoor unit controls the inverter air cond...

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Abstract

The invention discloses a whole course cold air preventing control method for a variable frequency air conditioner. The whole course cold air preventing control method for the variable frequency air conditioner is characterized by comprising the following steps: (1) starting in a heating mode, entering a starting cold air preventing function, controlling air speed and when to quit the starting cold air preventing function of an indoor fan through an indoor machine mainboard in an indoor unit electric control box; (2) after the starting cold air preventing function is quitted, controlling the indoor fan to operate at a set air speed of a remote controller by the indoor machine mainboard, and controlling whether the cold air preventing function in the heating operation of the variable frequency air conditioner is effective or not and the air speed of the indoor fan according an indoor ambient temperature TA, a coil pipe temperature TE and a remote controller set temperature TS; when the cold air preventing function in the heating operation is ineffective, operating the indoor fan at the set air speed. According to the whole course cold air preventing control method for the variable frequency air conditioner, the cold air can be prevented during starting and normal heating operation processes; the product comfort degree is high.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method for controlling cold wind throughout the entire process of an inverter air conditioner. Background technique [0002] The current inverter air conditioner basically adopts the anti-cold wind control method of the fixed frequency air conditioner in the heating mode, that is, wait for the temperature of the middle coil of the evaporator of the indoor unit to rise when starting up or wait for the compressor to run for a period of time before blowing out the air, so that Avoid blowing cold wind when it is just running. [0003] However, the existing anti-cold air control method of the inverter air conditioner has the following technical problems: after exiting the anti-cold air function when starting up, when the ambient temperature is close to the set temperature, the inverter air conditioner will run at a low frequency, and the coil temperature will drop at this t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
CPCY02B30/70
Inventor 颜景旭应必业
Owner AUX AIR CONDITIONING LTD BY SHARE LTD
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