Waste heat blowing control method of air conditioner

Abstract

The invention discloses a waste heat blowing control method of an air conditioner. The waste heat blowing control method of the air conditioner includes the steps that whether the air conditioner meets first set conditions and second set conditions or not is judged; if yes, an indoor fan operates to blow waste heat; the first set conditions comprise that an indoor unit operates in a heating mode, the temperature of a heat exchanger coil pipe of the indoor unit is larger than or equal to a waste heat blowing entering temperature value, and the rotation speed of the indoor fan is larger than a rotation speed set value; and the second set conditions comprise that the indoor unit is stopped or the indoor environment temperature is larger than or equal to a set temperature or a compressor is stopped. According to the waste heat blowing control method of the air conditioner, judgment of the rotation speed of the indoor fan is added to the entering conditions of waste heat blowing, and waste heat blowing is carried out only when the rotation speed of the indoor fan is larger than the rotation speed set value and other conditions are met. The problems that the indoor fan is repeatedly operated and stopped and the indoor fan blows waste heat firstly when the air conditioner is started for heating are solved, the situation that the indoor fan is repeatedly started and stopped due to waste heat blowing is avoided, the quality and competiveness of the air conditioner are improved, and user experience is improved.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a method for controlling waste heat blowing of an air conditioner. Background technique [0002] Blowing waste heat from the air conditioner refers to the operation of the indoor fan to blow out the waste heat from the coil of the indoor unit to reduce the temperature of the coil and make the system pressure reach a balanced state; at the same time, the hot air around the air conditioner is blown away to prevent the local temperature from being too high and causing the Hot mode is difficult to activate. [0003] The condition for the current air conditioner to blow waste heat is that in the heating mode, when the temperature Tm of the indoor unit coil is higher than the blowing waste heat entry temperature value T1, and any one of the following three conditions is met: [0004] Condition 1: Indoor shutdown machine; [0005] Condition 2: The temperature sens...

AI Technical Summary

Problems solved by technology

[0008] Problem 1: Due to the rise of hot air or other reasons, the ambient temperature of the indoor unit of the air conditioner is generally higher than the temperature of other indoor areas. If the temperature of the coil of the indoor unit is higher than the value of the waste heat entering temperature, the indoor unit will be turned on and the heating will be turned on. In this mode, the indoor fan runs before the compressor starts (condition 3 is met) to blow waste heat; after blowing the waste heat, the fan stops; after the compressor starts, the indoor fan starts to run again

From the user's point of view, the fan stops after running for a while, and starts running again after a while. The user may think that there is a problem with the fan operation, which leads to user complaints.

[0009] Question 2: During the operation of the air conditioner, when the indoor ambient temperature reaches the set temperature of the air conditioner, that is, the temperature sensor of the indoor unit is turned off, the coil temperature will be relatively high at this time, and the waste heat will be blown when it is greater than the blowing waste heat entering temperature value T1 (Condition 2 is met), if the temperature of the coil is still higher than the entry temperature value T1 after blowing the waste heat once, the indoor fan will blow the waste heat again after the indoor shutdown (condition 1 is met)

That is to say, the indoor unit blows waste heat twice in a row. The phenomenon that the user sees is: the fan runs, then the fan stops, and after the shutdown, the fan runs again, and then stops again.

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