Air conditioner and control method thereof

A control method and air conditioner technology, which is applied in heating and ventilation control systems, heating methods, space heating and ventilation, etc., can solve the problem of high suction superheat of air conditioners, and achieve the purpose of enhancing long-term operation stability and reliability Effect

Active Publication Date: 2013-07-10
珠海格力机电工程有限公司
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  • Abstract
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Problems solved by technology

[0006] The main purpose of the present invention is to provide an air conditioner and its control method to solve the problem that the suction superheat of the air conditioner is too high or too low

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  • Air conditioner and control method thereof
  • Air conditioner and control method thereof
  • Air conditioner and control method thereof

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Embodiment Construction

[0025] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] figure 1 is a schematic diagram of an air conditioner according to an embodiment of the present invention, as figure 1 As shown, the air conditioner includes a control board 1, an electronic expansion valve 2, a compressor 8, a four-way valve 10, a gas-liquid separator 9, an indoor heat exchanger 7, and an outdoor heat exchanger 5. The exhaust temperature sensing package 3 at the outlet, the tube temperature sensing package 4 located on the outdoor heat exchanger 5 and the tube temperature sensing package 6 located on the indoor heat exchanger 7, wherein the electronic expansion valve 2, the exhaust temperature sensing The package 3 , the tube temperature sensing package 4 and the tube...

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Abstract

The invention discloses an air conditioner and a control method thereof. The control method comprises the following steps: detecting the discharge temperature of a compressor of the air conditioner; detecting the pipeline temperature of a heat exchanger of the air conditioner; calculating a difference value between the former two temperatures to obtain the exhaustion superheat degree of the air conditioner; comparing the exhaustion superheat degree with a range of a target exhaustion superheat degree to obtain a relation; and when the exhaustion superheat degree is not within the range of the target exhaustion superheat degree, adjusting the opening degree of an electronic expansion valve of the air conditioner to allow the exhaustion superheat degree to be within the range of the target exhaustion superheat degree. According to the invention, the electronic expansion valve of a system is adjusted based on the exhaustion superheat degree with top and bottom limitation set in the adjusting process, so that the air conditioner can always keep the exhaustion superheat degree stable, no matter what environmental temperature is, so that the long-time running stability and reliability of the air conditioner are greatly increased.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to an air conditioner and a control method thereof. Background technique [0002] Frequency conversion air conditioning system is more and more favored by the people because of its stable operation, economical and energy-saving advantages. Inverter air conditioner units are generally throttling and adjusted through electronic expansion valves. Electronic expansion valves are an important throttling component in inverter air conditioning systems. The quality of their adjustment directly affects the stability of the air conditioning system. [0003] At present, the adjustment methods of the electronic expansion valve in the frequency conversion air conditioning system mainly include control according to the degree of evaporation superheat and control according to the exhaust temperature. The most common in air conditioner products is based on the evaporation superheat control. This m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00F24F11/02
Inventor 胡朝发曹勇
Owner 珠海格力机电工程有限公司
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