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Multi-line unit control method

A control method and multi-connection technology, applied in heating and ventilation control systems, heating methods, mechanical equipment, etc., can solve the problems of power consumption, time difference, etc., and achieve the effect of improving energy efficiency ratio, best energy efficiency, and best energy saving effect

Active Publication Date: 2019-01-18
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +1
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Problems solved by technology

At this time, if the running energy efficiency of the turned on compressor is lower than that of turning on the other compressor, the user will consume a part of unnecessary electric energy in vain

Method used

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Embodiment Construction

[0037] 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.

[0038] Multi-connected units include multiple outdoor units and multiple indoor units, each outdoor unit includes a compressor, multiple outdoor units are connected in parallel, and multiple compressors are connected in parallel. Multiple compressors have different capabilities; each indoor unit is connected to the outdoor unit to form a refrigerant circulation pipeline.

[0039] The multi-line control method of this embodiment mainly includes the following steps, see figure 1 shown.

[0040] In this embodiment, the following steps are generally performed when the indoor unit is operating at partial load.

[0041] Step S1: Obtain the sum Sumq of the capabilities of all powered-on indoor units.

[0042] The sum Sumq of the capabilities of all pow...

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Abstract

The invention proposes a multi-line unit control method. By acquiring the sum Sumq of the capabilities of all opened indoor units, all compressor combination modes capable of satisfying Sumq are obtained; an energy efficiency ratio of each compressor combination mode satisfying Sumq is calculated, and the compressor combination mode with the optimal energy efficiency ratio is selected; all compressors in the selected compressor combination mode are controlled to be started, and a multi-line unit runs. Therefore, according to the multi-line unit control method of the embodiment, while capacitydemands of the indoor units are met, the compressor combination mode with the optimal energy efficiency ratio is selected, so that the multi-line unit runs in the best energy efficiency state, and thebest energy saving effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a multi-line control method. Background technique [0002] At present, the multi-connected products on the market usually control the capacity output of the compressor according to the capacity demand of the indoor unit when the part load is running, and seldom consider the operating efficiency of the unit, especially in the case of multiple compressors. In the online system, the next compressor is usually turned on when the output of one compressor reaches a higher frequency but still cannot meet the indoor capacity requirements. This method will cause the unit to often operate at relatively poor operating efficiency. cause waste of electric energy. At present, the multi-connection products on the market operate under partial load for most of the year. If the output control of the compressor is unreasonable under partial load, it will lead to waste of elect...

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Application Information

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IPC IPC(8): F24F11/30F24F11/64F24F11/86
CPCF24F11/30F24F11/64F24F11/86
Inventor 何建奇毛守博国德防隋志蔚武运动
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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