Intelligent defrosting control method of split air conditioner

A control method and air conditioner technology, applied in heating and ventilation control systems, heating methods, space heating and ventilation, etc., can solve the problems of increasing the cost of air conditioners, and achieve the goal of increasing average heating capacity, saving costs, and reducing costs Effect

Active Publication Date: 2010-08-04
MIDEA GRP CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

But both of these methods have increased the cost of the air conditioner

Method used

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  • Intelligent defrosting control method of split air conditioner
  • Intelligent defrosting control method of split air conditioner
  • Intelligent defrosting control method of split air conditioner

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Experimental program
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Embodiment Construction

[0030] The specific process will be described in detail as follows:

[0031] as attached figure 1 , the air-conditioning system enters the heating operation mode, and the accumulated running time of the compressor starts to be recorded. After the compressor runs continuously for 8 minutes, the ΔT (T2-T1) is sampled and recorded (but when the wind gear changes, the ΔT data within two minutes does not need to be recorded). If there is a power failure, shutdown, conversion mode or evaporator high temperature protection during the operation of the machine, the accumulated running time of the compressor and ΔT'max will be cleared.

[0032] Next, if the accumulative running time of the compressor is ≥ 45 minutes, and the current compressor is turned on, it will enter defrosting when the following situations occur, otherwise the machine will run normally for heating.

[0033] Such as figure 2 Shown: (1) When the current internal fan is running at high wind speed, it can enter the...

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PUM

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Abstract

The invention belongs to the field of control of air conditioners and relates to an intelligent defrosting control method of a split air conditioner. The method specifically comprises the following steps: a) leading an air conditioner system to enter into the heating operation mode; b) leading the system to record the cumulative operation time of a compressor, detecting and recording the temperature T2 of a coil of a heat exchanger of an indoor unit and the indoor temperature T1, and calculating the difference delta T which is equal to T2-T1; c) entering into the step d when the cumulative operation time of the compressor achieves the set time and the compressor is open currently; and d) dividing into the high wind gear operation state, the medium wind gear operation state, the low wind gear operation state, the gentle wind operation state and the fan stop state according to the operation states of an internal fan; the system takes the operation time of the compressor, the temperature T2 of the coil of the heat exchanger of the indoor unit and the indoor temperature T1 as parameters for setting the conditions of entering into the defrosting operation and exiting the defrosting operation against the different wind gear operation states; and the system carries out defrosting if meeting the conditions of entering into the defrosting operation, and the system exits the defrosting operation and returns to the step a) if meeting the conditions of exiting the defrosting operation. The method is characterized by low cost and high efficiency.

Description

technical field [0001] The invention belongs to the field of air conditioning control, and in particular relates to an intelligent defrosting control method for a split air conditioner. Background technique [0002] Generally, the defrosting process of the air conditioner mainly depends on the sensor on the condenser coil of the outdoor unit for control, or if there is no sensor for the outdoor unit, a current protector is added to the indoor unit for auxiliary control. But these two kinds of methods have all increased the cost of air conditioner. Contents of the invention [0003] The object of the present invention is to provide an intelligent defrosting control method for a split air conditioner. This method can protect the defrosting process without using the indoor unit current protector under the condition that there is no temperature sensor on the outdoor heat exchanger coil of the air conditioner. Intelligently control the T1 value of the return air temperature s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
Inventor 陈海群李洪涛程志明杨瑞林李丰罗敬钊
Owner MIDEA GRP CO LTD
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