[0015] Example one
[0016] Reference figure 1 , figure 2 This embodiment includes the positive and negative wires of the battery 1 of the car, the ignition switch 2 is connected in series on the positive wire, and the wiper branch and the water spray pump branch are connected in parallel between the positive and negative wires after the ignition switch 2. 、Spray cooling branch; the wiper branch is connected in series with wiper switch 9, wiper low water level switch 10, double throw relay A1 coil circuit; the spray pump branch is connected in series with spray pump B1, double throw relay A1 output circuit AC switch 4, low pressure switch 5, spray low water level switch 6, high pressure switch 7, high water level switch 8, and spray pump control module 11 are connected in series on the spray cooling branch. The spray pump control module includes a time delay relay A2, a spray pump relay A3, a wiper normally-on solenoid valve B2, and a spray normally-off solenoid valve B3; the spray cooling branch is connected in parallel with three module branches, that is, connected in series The first module branch of the normally closed contact C2 of the delay relay A2 coil circuit and the double-throw relay output circuit are connected in series with the coil circuit of the spray pump relay A3 and the second module branch of the spray normally-off solenoid valve B3, in series The third module branch of the output circuit of the wiper normally-on solenoid valve B2 and the delay relay A2. The output circuit of the spray pump relay A3 is connected to the spray pump B1, and the negative electrode of the spray normally-off solenoid valve B3 and the delay The output circuit of relay A2 is connected. The wiper kettle 15 is divided into a lower kettle and an upper kettle. The wiper low water level switch 10 is connected to the water level sensor 16 installed in the lower kettle, and the spray low water level switch 6 is connected to the water level sensor 17 installed at the bottom of the upper kettle. The water level switch 8 is connected to a water level sensor 18 mounted on the top of the upper pot. The low-pressure switch 5 is connected with a pressure sensor arranged in the low-pressure pipe of the air conditioner, the high-pressure switch 7 is connected with a pressure sensor arranged in the high-pressure pipe of the air conditioner, and a fuse box 3 is connected in series after the ignition switch 2. The water outlet of the water spray pump B1 is connected to the tee pipe 12. The two outlets of the tee pipe 12 are respectively connected with the wiper nozzle 13 and the air conditioning spray system nozzle 14, and they are respectively equipped with a wiper normally-on solenoid Valve B2, spray normally-off solenoid valve B3. When the coil circuit of the double-throw relay A1 coil is energized, the normally open contact C1 of its output circuit is closed, and the water spray pump B1 sprays water to the wiper; when the coil circuit of the double-throw relay A1 coil is de-energized, the normally closed contact of its output circuit C2 is closed, the coil circuit and output circuit of delay relay A2, the coil circuit and output circuit of spray pump relay A3 are connected in succession, the wiper normally-on solenoid valve B2 is de-energized, and the spray pump B1 in the tee pipe 12 is cut off to the wiper spray The connection channel of the water outlet, the spray normally-off solenoid valve B3 is energized, and the connection channel from the spray pump B1 in the three-way pipe 12 to the spray outlet of the air conditioning spray system is connected.
[0017] When working, turn on the ignition switch 2, the power supply is connected to the wiper low water level switch 10, and the power supply is connected to the wiper low water level switch 10. When the water level rises to the set water level, the wiper low water level switch 10 is closed and the power supply is connected to the double throw relay A1 generates a magnetic field, the output circuit contact of A1 is closed, the power is turned on to the water spray pump B1, and the water spray pump works to send water to the wiper nozzle. Since the double throw contact of the relay A1 is sucked by the magnetic field, its normally open contact C1 When connected, the normally closed contact C2 is disconnected, thereby cutting off the coil circuit to the delay relay A2, and the air-conditioning spray system cannot work. When the water level of the wiper water collecting kettle is lower than the set water level, the wiper low water level switch 10 cuts off the power, and the wiper water spray system stops working to protect the water spray pump motor and avoid empty load work due to no water in the water collecting kettle. Heat and damage the water spray pump motor. When the water level rises to the set water level, the wiper low water level switch 10 is closed, and the wiper water spray system can work. Turn off the wiper switch 9, the double-throw relay A1 coil circuit is cut off, the magnetic field disappears, the normally open contact C1 is disconnected, and the water spray pump stops working. Due to the disappearance of the magnetic field, the double-throw contact of the relay returns, the normally closed contact C2 is turned on, the coil loop of the delay relay A2 of the air conditioning spray system is turned on, and the other power supply is connected to the AC switch 4. When there is 0.3mpa in the air conditioning pipe When the pressure is above, the low pressure switch 5 is closed, and the power supply is connected to the spray low water level switch 6. When the water level rises to the set water level, the spray low water level switch 6 is closed and the power supply is connected to the high pressure switch 7. When the pressure in the high pressure pipe of the air conditioner When it rises to 1.5mpa, the normally open high voltage switch 7 is closed, and then the frequently closed high water level switch 8, the power is turned on to the wiper normally open solenoid valve B2, when B2 is energized, the solenoid generates magnetic force to remove the piston from the valve seat When pressed, the valve closes, cutting off the water spray channel from the water spray pump to the wiper. At the same time, the output circuit of the delay relay A2 conducts the coil circuit of the water spray pump relay A3, and the spray normally-off solenoid valve B3 is also energized at the same time, and B3 is energized. When the solenoid valve coil generates magnetic force to lift the piston from the valve seat. The valve opens and connects the water spray pump to the air-conditioning spray system spray port, sprays water to the high-pressure pipe and condenser of the air-conditioning heat dissipation network to dissipate heat. The coil circuit of A3 generates a magnetic field, the normally open contact of the output circuit of A3 is closed, and the water spray pump B1 When the electricity is turned on, the water spray pump B1 works due to conduction, spraying water to the air conditioning system to dissipate heat. When the water level in the upper pot of the jug is lower than the set water level, the water level sensor 17 at the bottom of the upper pot sends out a signal, the spray low water level switch 6 is turned off, and when the pressure in the air conditioning pipe is lower than 0.3mpa, the low pressure switch 5 is turned off When the pressure in the high-pressure pipe of the air conditioner is lower than 1.5mpa, the high-pressure switch 7 is turned off, any of the above switches is turned off, the coil circuit of the delay relay A2 is cut off, the electromagnetic field disappears, the contact of the output circuit A2 opens, and the coil circuit of the water spray pump relay A3 also Therefore, it is disconnected, the magnetic field disappears, the A3 output circuit contact opens, and the water spray pump B1 stops working due to power failure. The wiper water bottle is provided with a drain port lower than the air-conditioning drain source inlet, which automatically drains when the water level rises to a high level. The high water level switch 8 is a normally closed contact. When the water overflows over the water level set by the high water level sensor 18, it will be disconnected and play an overflow protection function; when the water level drops to the water level set by the high water level sensor 18, the high water level switch 8 Resume connection.
