Method for controlling air conditioner

Abstract

The invention provides a method for controlling an air conditioner. The method comprises the following steps: 1, starting; 2, initially electrifying, arranging a rechargeable battery and an erasable memory EEPROM on the controller of the air conditioner, and presetting the following default value in the memory; 3, determining whether shut down is caused by a power grid or personal factor, entering the seventh step when the determination result is YES, otherwise, entering the fourth step; 4, executing a 'pattern processing subprogram', and entering the fifth step; 5, executing a 'time accumulation subprogram', and entering the sixth step; 6, executing a 'compressor control subprogram', and entering the third step; 7, saving updated data of the memory, and entering the eighth step; and 8, setting the minimum shut down time of the compressor to reach the mark of FALSE, and entering the ninth step. The method has the characteristics of flexible operation and wide application range.

Description

technical field [0001] The invention relates to a control method of an air conditioner. Background technique [0002] Currently on the market, the power failure memory or automatic restart function of the air conditioning unit generally means that the air conditioning unit can automatically return to the working mode before the power failure when the power is turned on again during the standby or running process. Vendors of air conditioning units generally offer the following two approaches: [0003] (1) After a power call, no matter how long the power outage is, the compressor will recover without delay protection. In this mode, when the power is cut off during the standby process, the air conditioner will immediately return to the standby state after the power is turned on again, waiting for the user’s start-up command; if the power is cut off during the running process, the air conditioner will immediately return to the mode before the power failure Running, the compres...

AI Technical Summary

Problems solved by technology

[0005] For method (1), in some areas where the power grid is unstable or frequently trips frequently, if the power grid trips frequently and then calls immediately, it will cause the air conditioning unit to stop frequently and then restart immediately, causing the compressor of the air conditioning unit to also frequently Start and stop

Or, for the convenience of maintenance, the maintenance personnel deliberately avoid the 3-minute protection delay time of the compressor of the air conditioning unit itself to shorten the waiting time for starting up, and will artificially cut off the power of the air conditioning unit and then turn on the power again, forcing the air conditioning unit to be powered on. After that, the compressor can start running immediately. This kind of non-standard maintenance operation method is particularly prominent on ordinary air conditioning units without power failure memory function.

[0006] In the above situations, due to the lack of time for the compressor to balance the pressure, it will be difficult to start under the condition of a large pressure difference between high and low pressures, and the excessive starting current will indirectly cause the power switch of the air conditioning unit to trip. Difficulties and other reasons cause huge losses such as compressor cylinder damage

[0007] For method (2): In normal use, the air conditioner unit is powered off and shut down due to power grid or human factors, and when the power is turned on again after the power outage time ≥ 3 minutes, the air conditioner unit executes the automatic restart function to resume operation, but the compressor It is necessary to start the operation after a forced delay of 3 minutes on the basis of restarting the power; from the perspective of this automatic restart method, in fact, the pressure of the air conditioning unit has been balanced within the power outage time of ≥ 3 minutes. A delay of 3 minutes is too much time, and it is not suitable for customers who need to quickly start cooling / heating

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