Dual-mode start control method and system of compressor of direct-current variable frequency air conditioner

A technology for air-conditioning compressors and air-conditioning systems, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve problems such as compressor startup failure and demagnetization, and achieve the effect of solving startup failure and demagnetization.

Active Publication Date: 2013-09-11
CHONGQING MIDEA REFRIGERATION EQUIP CO LTD +1
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Problems solved by technology

[0019] The purpose of the present invention is to provide a dual-mode start-up control method for DC inverter air conditioner compressors, aiming to solve the problem of compressor demagnetization caused by high-frequency rapid start-up when the pressure of the air-conditioning system is unbalanced in the prior art

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  • Dual-mode start control method and system of compressor of direct-current variable frequency air conditioner
  • Dual-mode start control method and system of compressor of direct-current variable frequency air conditioner
  • Dual-mode start control method and system of compressor of direct-current variable frequency air conditioner

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[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0049] In the embodiment of the present invention, by judging whether the system pressure of the DC inverter air conditioner is balanced, if the system pressure is balanced, the compressor is controlled to enter the high-frequency fast start mode; if the system pressure is unbalanced, the compressor is controlled to enter the normal slow start mode, thereby ensuring The compressor can start quickly only when the system pressure is balanced, so that the compressor will not fail to start and demagnetize due to the unbalanced system pressure.

[0050] figure 2 The implementation flow of the dual-mod...

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Abstract

The invention belongs to the technical field of air conditioner variable frequency motor control, and provides a dual-mode start control method and system of a compressor of a direct-current variable frequency air conditioner. The method includes: judging whether system pressure of the variable frequency air conditioner is balanced or not, if so, controlling the compressor to enter a high-frequency quick start mode, and if not, controlling the compressor to enter a normal slow start mode. Therefore, the compressor is guaranteed to be started quickly only when the system pressure is balanced, and start failure and demagnetization of the compressor due to the fact that the system pressure is unbalanced are avoided.

Description

technical field [0001] The invention belongs to the technical field of air conditioner frequency conversion motor control, and in particular relates to a dual-mode start-up control method and system for a DC frequency conversion air conditioner compressor. Background technique [0002] In hot summer or cold winter, for air-conditioning products, the speed of room temperature drop or rise after power-on will directly affect the user experience, so the cooling or heating speed is one of the indicators to measure the comfort of air-conditioning products. [0003] For DC inverter air conditioners, under the same conditions, the higher the operating frequency of the compressor, the higher its cooling or heating capacity, and the faster the indoor temperature drops or rises. [0004] Due to the limitations of compressor lubrication technology and start-up control technology, the existing DC inverter air conditioners are all started at low frequency, and then ramped up to high-freq...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
Inventor 朱良红
Owner CHONGQING MIDEA REFRIGERATION EQUIP CO LTD
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