Central air conditioner and its control method

A central air conditioner and air conditioner technology, applied in heating and ventilation control systems, refrigerators, heating methods, etc., can solve the problems of reducing cooling and heating effects, increasing power consumption, etc.

Inactive Publication Date: 2006-06-07
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] Therefore, the output power of the outdoor side has certain limitations on the adaptability of the power required by the indoor unit

Method used

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  • Central air conditioner and its control method
  • Central air conditioner and its control method
  • Central air conditioner and its control method

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Embodiment Construction

[0041] like image 3 As shown, the central air conditioner of the present invention includes a variable-speed first compressor 330, a second compressor 340 operating at a set speed, and an outdoor unit control unit 310. The outdoor unit control unit 310 controls the above-mentioned first compressor. 330, the second compressor 340, and the driving of other components are controlled.

[0042] The outdoor unit control unit 310 of the present invention is composed of a filter 312 , a rectifier 314 , a transformer 315 , and a compressor drive unit 316 . Filter 312 filters the incoming common power supply. The rectifier 314 is used to convert the power filtered by the above-mentioned filter 312 into direct current (DC), and rectify the common frequency into direct current (DC). The transformer 315 is used to convert the power supplied by the rectifier 314 into the required driving voltage and frequency for driving the first compressor 330 corresponding to the driving conditions. ...

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Abstract

The present invention relates to central air conditioner and its control method. The central air conditioner includes several indoor units and one outdoor unit. The outdoor unit includes the first compressor capable of running in variable speed based on the power the indoor units need; the second compressor running in set speed; and an outdoor controller to control the first compressor and the second compressor and drive the first compressor or the second compressor selectively based on the indoor unit driving condition. The control method includes one judging stage of judging the power the indoor units need in light load condition, medium load condition or overload condition after the user inputs the power on command; and one control stage of controlling the variable power of the fixed speed compressor and the speed variable compressor based on the judging result.

Description

technical field [0001] The invention relates to a central air conditioner and a control method thereof. Background technique [0002] Generally, an air conditioner can cool, heat, and purify indoor air so that the room can achieve a comfortable environment. For example, it cools the room in summer and heats the room in winter. In addition, it can also adjust the indoor humidity to make the room a comfortable environment. With the popularity of air conditioners, consumers gradually have higher and higher requirements for energy efficiency, performance, and product convenience. [0003] The above-mentioned air conditioners include the following various air conditioners. That is, a separate air conditioner in which the outdoor unit and the indoor unit are separated, an integrated air conditioner in which the outdoor unit and the indoor unit are combined, a wall-mounted air conditioner, and a household or a relatively small air conditioner that requires less power. Small air ...

Claims

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Application Information

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IPC IPC(8): F24F11/02
CPCF25B2400/0751F25B2600/0253Y02B30/70
Inventor 李根万
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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