Design and development of water purifier scheme

Design and development of water purifier scheme for household electronic products

Function Description: 

1. The pure water machine will enter the flushing state when it is powered on. At this time, the "F" on the panel will flash, and the water inlet valve and pump will be turned on, and the flushing valve will be turned on. After 40 seconds of automatic flushing, it will enter the next step.

2. After 40s of flushing, it enters the water-making condition. At this time, the water inlet valve and pump are opened, the flushing solenoid valve is closed, and the panel rotates dynamically.

3. When the high pressure switch detects the water full signal, the water inlet valve and pump stop, the flush valve continues to close, the buzzer "drops" and the panel displays statically, when the high pressure water full signal is released (the water full signal needs to exceed 10S at this time) , The pure water machine enters the water production condition after 10s of automatic flushing;

4. When the low-pressure switch lacks water signal, the water inlet valve and pump stop, and the flush valve closes. At this time, the panel flashes and the buzzer sounds intermittently. The alarm stops after about 20s;

5. When the flush button is pressed, the equipment immediately enters step "1" flushing condition to achieve manual flushing requirements.

Design and development of water purifier scheme for household electronic products

specification:

1. The intelligent control board uses conventional 24V/1.5A switching power supply (voltage 24V, current greater than 1.5A is also possible).

2. The intelligent control panel has the function of automatically detecting whether the tap water pipe has water (detected by the low-pressure switch, there is water when it is closed), an alarm when there is water shortage, the color screen water shortage icon flashes to indicate, at this time flushing and water production function Stop, the water pump, enter the standby state to reduce power consumption.

3. When there is water in the tap water pipe, the instrument will automatically perform the flushing function to remove the dirt from the RO membrane filter element of the water machine. After flushing, if the water storage bottle is not full (detected by the high-pressure switch, the water is full when it is disconnected) The instrument control panel will automatically produce water until the water is full and stop.

4. The intelligent control panel automatically flushes the RO membrane for 15 seconds every 8 hours.