A control method and control system for an inverter air conditioner
A technology of inverter air conditioner and control method, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve problems such as electric shock and slow discharge, avoid the danger of electric shock, avoid electric shock, and reduce waiting time. effect of time
Active Publication Date: 2021-07-30
HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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Problems solved by technology
However, the problem brought about by this method is that when the power is cut off, the power of the switching power supply will be discharged quickly, and the indicator light of the weak current will be extinguished soon, but the energy of the strong current part will be discharged very slowly because there is no fast discharge circuit. , if the strong current indicator light is damaged, the maintenance personnel will mistakenly think that the machine is out of power when they see that the indicator light is not on during operation, which may cause the risk of electric shock
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[0034] In the following, the present invention will be specifically described through exemplary embodiments. It should be understood, however, that elements, structures and characteristics of one embodiment may be beneficially incorporated in other embodiments without further recitation.
[0035] In the description of the present invention, it should be noted that: (1) figure 2 with image 3 The middle arrow represents the current trend; (2) the structure and the connection relationship of the drive MCU, inverter, compressor, main control MCU, main loop control switch and drive power supply control switch are technologies known to those skilled in the art, so the present invention is for those skilled in the art. I won't go into details here.
[0036] In order to reduce the waiting time for maintenance and avoid the risk of electric shock, see Figure 1 to Figure 3 , the present invention provides a method for controlling an inverter air conditioner, comprising the followi...
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The present invention proposes a control method and control system for an inverter air conditioner, wherein the control method includes: the step of starting the discharge program, when the inverter air conditioner is turned on, it is turned off or in a standby state, and the continuous T 1 When there is no need to start up within the time, receive the command of the main control MCU, and start the discharge program for discharging the strong current; execute the steps of the discharge program, shield the DC bus voltage low-voltage detection fault and the AC input voltage detection fault, and control the inverter at the same time The current direction of the compressor winding is changed in a cycle; the control system applies the above control method. The invention can reduce the maintenance waiting time after the air conditioner is shut down or the main circuit power supply is cut off for a long time, and at the same time, the danger of electric shock can be avoided.
Description
technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a control method and a control system for an inverter air conditioner. Background technique [0002] Since the energy efficiency requirements of products in various countries are getting higher and higher, and the energy efficiency is generally calculated using the seasonal energy efficiency ratio, the contribution of reducing the standby power consumption of air conditioners to energy efficiency is becoming more and more important, so how to reduce the standby power consumption of air conditioners is generally considered in product design. power consumption. [0003] A common way to reduce standby power consumption is to first cut off the power supply of the drive part during standby, and then turn off the weak power supply of the drive part, leaving only the switching power supply at work. However, the problem brought about by this method is that when the ...
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IPC IPC(8): F24F11/64F24F11/88
CPCF24F11/64F24F11/88
Inventor 安丰德陈建兵高思云牛建勇
Owner HISENSE (SHANDONG) AIR CONDITIONING CO LTD