Heating start method of multi-split air conditioner

A multi-connected air conditioner and hot start technology, which is applied in heating methods, space heating and ventilation, household heating, etc., can solve problems such as burning compressors, malfunction shutdowns, and disordered operation during startup, so as to prolong the service life and ensure The effect of normal operation

Active Publication Date: 2013-04-03
NINGBO AUX ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After waiting for a period of time, if the indoor ambient temperature rises again, or when it is forced to start up, the multi-connector needs to be restarted. At this time, if the timing of the actions between the various control components in the start-up phase is not coordinated, it will cause the entire DC frequency conversion to fail. The disordered operation of the online system during the start-up phase will affect the reliability of the heating capacity of the system, and even lead to failure and shutdown, and more seriously, the compressor will be burned

Method used

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  • Heating start method of multi-split air conditioner
  • Heating start method of multi-split air conditioner

Examples

Experimental program
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specific Embodiment 1

[0032] Specific embodiment 1: Only a single indoor unit receives the start-up command

[0033] 1) The remote control or wire controller or centralized controller sends a heating and starting command to the indoor electric control device of the multi-split air conditioner, and the indoor electric control device of the multi-split air conditioner receives the command and transmits the heating and starting command to the outdoor electric control device. The outdoor electric control device sends out the heating start command of the whole multi-connected air conditioner, and starts the heating start process;

[0034] 2) The gas bypass solenoid valve 10 in the multi-split air conditioner is powered on after receiving the cooling start command, and after 60 seconds of power on, the gas bypass solenoid valve 10 is closed;

[0035] 3) The first oil return solenoid valve 4 in the multi-split air conditioner is energized and opened after receiving the heating start command, and transport...

specific Embodiment 2

[0047] Specific embodiment 2: multiple indoor units receive a power-on command

[0048] 1) The remote control or wire controller or centralized controller sends a heating and starting command to the indoor electric control device of the multi-split air conditioner, and the indoor electric control device of the multi-split air conditioner receives the command and transmits the heating and starting command to the outdoor electric control device. The outdoor electric control device sends out the heating start command of the whole multi-connected air conditioner, and starts the heating start process;

[0049] 2) The gas bypass solenoid valve 10 in the multi-split air conditioner is powered on after receiving the cooling start command, and the gas bypass solenoid valve 10 is closed after the power is lasted for 80 seconds;

[0050] 3) The first oil return solenoid valve 4 in the multi-split air conditioner is energized and opened after receiving the heating start command, and trans...

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Abstract

The invention discloses a heating start method of a multi-split air conditioner. Coordinate control is performed according to different time intervals during which each part in an air-conditioning system runs at different times. Action time sequence of each part is sequentially and reasonably coordinated according to respective start time and start time interval of each part in the multi-split air conditioning system, so that a four-way valve is enabled to be successfully switched, the multi-split air conditioning system can be controlled in a normal and reliable running way, the disorder of running of the whole multi-split air conditioning system is avoided, a direct-current inverter compressor is enabled to normally run, and the service life of the direct-current inverter compressor is prolonged.

Description

technical field [0001] The invention relates to the technical field of air conditioner control, in particular to a heating start method for a multi-connected air conditioner with multiple compressors connected in parallel. Background technique [0002] The current DC frequency conversion multi-connected air conditioner basically has 5 specifications of 8 horses, 10 horses, 12 horses, 14 horses and 16 horses, while the power of a single scroll DC frequency conversion compressor is only 4 horses, 8 horses, etc. Therefore, when designing a 12-hp multi-connected air conditioner, it is necessary to use a 4-hp and an 8-hp DC inverter compressor in parallel; similarly, when designing a 14-hp multi-connected air conditioner, It must be composed of a 4-horsepower and a 10-horsepower DC inverter compressor in parallel; when designing a 16-horsepower multi-line air conditioner, it must be composed of two 8-horsepower DC inverter compressors in parallel. Moreover, in the DC inverter mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
Inventor 郑坚江程德威
Owner NINGBO AUX ELECTRIC
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