Ozone sterilization controller for induction faucet

Abstract

This invention relates to a sensor-operated faucet ozone sterilization controller, comprising a housing with an inlet and an outlet, and an ozone generator, a sensor, a solenoid valve, a jet tube, a normally closed pressure switch, and a static mixing tube. The controller transmits a signal from the sensor to the solenoid valve, which controls water flow into the jet tube. The increased water pressure after passing through the jet tube reaches the set value of the normally closed pressure switch, sending a signal to the ozone generator. Ozone then enters the jet tube through a vent pipe. The water and ozone then pass through the solenoid valve into the static mixing tube, which contains spiral blades to achieve an ozone dissolution rate >95%. A sensor is also installed at the outlet, connected to the solenoid valve via a wire. The sensor monitors the ozone content at the outlet in real time. When the ozone content exceeds the set value, the sensor forcibly cuts off power, simultaneously closing the solenoid valve and shutting down the ozone generator, significantly improving safety.

Description

Technical Field

[0001] This invention relates to an ozone sterilization controller for sensor-operated faucets. Background Technology

[0002] For hygiene, convenience, water conservation, and environmental protection, sensor-operated faucets are increasingly being used in public places and areas requiring high hygiene standards. However, traditional sensor-operated faucets only achieve "non-contact start / stop" and cannot kill residual microorganisms such as E. coli and Staphylococcus aureus. Conventional chemical disinfectants pose a risk of secondary pollution and require frequent maintenance. Ozone, as a broad-spectrum, highly efficient, and rapid disinfectant, can quickly kill various pathogenic bacteria, viruses, and microorganisms in humans and viruses. In particular, ozone has a stronger and faster bactericidal effect after dissolving in water, and it does not cause secondary pollution. Therefore, using ozone to treat water is an excellent method. However, existing faucet ozone sterilization controllers have the following shortcomings: 1. Due to limitations in the mixing structure, the mixing efficiency of ozone and water is low, which cannot achieve a good sterilization effect; 2. There is a risk of ozone leakage, posing a safety hazard. Summary of the Invention

[0003] This invention provides an ozone sterilization controller for sensor-operated faucets.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0005] An ozone sterilization controller for a sensor-operated faucet includes a housing with an inlet and an outlet. Inside the housing are an ozone generator, a sensor, a solenoid valve, a jet pipe, and a normally closed pressure switch. The front end of the sensor is connected to the outside of the housing as an input terminal, and the rear end of the sensor has two output wires connected to the ozone generator and the solenoid valve, respectively. The ozone generator has a vent pipe with its inlet connected to the ozone generator and its outlet connected to the throat of the jet pipe. The top end of the jet pipe is connected to the inlet, and the lower end of the jet pipe is connected to the normally closed pressure switch, while the bottom end is connected to the solenoid valve. The normally closed pressure switches are connected to the ozone generator via wires. The solenoid valve is connected to a static mixing pipe.

[0006] Preferably, the sensing device is located at the lower end of the ozone generator.

[0007] Preferably, the jet tube is located on the right side of the ozone generator, and the inner diameter of the jet tube gradually decreases from the top of the jet tube to the throat, while the inner diameter gradually increases from the throat to the bottom of the jet tube.

[0008] Preferably, the inner diameter of the throat of the jet tube is 2.6 mm, and the cone angle of the diffuser sections at both ends of the throat is 8°.o .

[0009] Preferably, the static mixing tube is disposed on the side of the solenoid valve.

[0010] Preferably, the static mixing tube has spiral blades arranged inside.

[0011] Preferably, the spiral blades are provided in 12 groups, with a density of 8 groups / 10cm.

[0012] Preferably, a sensor for monitoring ozone concentration is installed on the outside of the water outlet, and the sensor is connected to the solenoid valve via a wire.

[0013] Preferably, the monitoring setpoint of the sensor is 0.1ppm-0.4ppm.

[0014] Preferably, the sensor is connected to the ozone generator in conjunction with a microcontroller, a power control element, and a PID adaptive algorithm to dynamically adjust the power of the ozone generator based on the data monitored by the sensor in real time.

[0015] Compared with existing technologies, the ozone sterilization controller for sensor-operated faucets of this invention transmits signals to a solenoid valve via a sensing device. The solenoid valve controls the water flow into the jet pipe. The water pressure increases after passing through the jet pipe, reaching the set value of the normally closed pressure switch, which sends a signal to the ozone generator. The ozone generator then turns on and produces ozone. The ozone enters the jet pipe through a vent pipe. The water and ozone then pass through the solenoid valve and enter the static mixing pipe. The static mixing pipe is equipped with spiral blades. When the water flows through the spiral blades, the ozone dissolution rate is greatly increased, achieving an ozone dissolution rate of >95%. Finally, the ozone flows out from the outlet. A sensor is also installed at the outlet, which is connected to the solenoid valve via a wire. The sensor can monitor the ozone content at the outlet in real time. When the ozone content exceeds the set value, the sensor is forcibly de-energized, and the solenoid valve is closed simultaneously. At the same time, the normally closed pressure switch, in the absence of water flow, controls the ozone generator to shut down. The controller achieves a dual-threshold shutdown function, greatly improving safety performance. Attached Figure Description

[0016] Fig. 1 This is a first three-dimensional schematic diagram of the sensor-activated faucet ozone sterilization controller of the present invention.

[0017] Fig. 2 This is a second three-dimensional schematic diagram of the sensor-activated faucet ozone sterilization controller of the present invention.

[0018] Fig. 3 This is a third perspective view of the sensor-activated faucet ozone sterilization controller of the present invention. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figs. 1 to 3 As shown, the sensor faucet ozone sterilization controller includes a housing 100, with an inlet 101 at the top and an outlet 102 at the bottom of the side wall.

[0021] The housing 100 contains an ozone generator 1, a sensing device 2, a solenoid valve 3, a jet pipe 4, and a normally closed pressure switch 5. The sensing device 2 is located at the lower end of the ozone generator 1. The front end of the sensing device 2 is connected to the outside of the housing 100 as a sensing input end. The rear end of the sensing device 2 is provided with two output wires that are respectively connected to the ozone generator 1 and the solenoid valve 3. The ozone generator 1 is provided with a vent pipe 11. The air inlet 111 of the vent pipe 11 is connected to the bottom end of the ozone generator 1, and the air outlet 112 of the vent pipe 11 is connected to the throat 41 of the jet pipe 4. Both the air inlet 111 and the air outlet 112 are sealed with PTFE to prevent ozone leakage.

[0022] The jet pipe 4 is located on the right side of the ozone generator 1, and its top end is connected to the water inlet 101. The inner diameter of the jet pipe 4 gradually decreases from its top end to its throat 41, and gradually increases from its throat 41 to its bottom end. The inner diameter of the throat 41 of the jet pipe 4 is 2.6 mm, and the cone angle of the diffuser sections at both ends of the throat 41 is 8°. o Negative pressure efficiency is improved by 30%.

[0023] The lower end of the jet pipe 4 is connected to a normally closed pressure switch 5, and the bottom end is connected to a solenoid valve 3. The normally closed pressure switch 5 is connected to the ozone generator 1 via two wires to control the switching of the ozone generator 1. When the sensing device 2 receives a signal, it transmits the signal to the solenoid valve 3, which opens the solenoid valve 3. Water flows into the jet pipe 4 from the inlet 101. After passing through the throat 41 of the jet pipe 4, the pressure increases. When the normally closed pressure switch 5 is closed, and the pressure of the normally closed pressure switch 5 reaches the set value, it sends a signal to the ozone generator 1. At this time, the ozone generator 1 opens, and ozone enters from the throat 41 of the jet pipe 4 through the vent pipe 11. The function of the jet pipe 4 is to ensure that the water flow reaches the set value when passing through the normally closed pressure switch 5. The starting pressure of the normally closed pressure switch 5 is set to 0.15±0.02MPa. The normally closed pressure switch 5 can prevent the ozone generator 1 from opening out of sync with the water flow, thereby preventing problems such as affecting the sterilization effect of the water flow or causing ozone leakage.

[0024] The side end of the solenoid valve 3 is connected to the static mixing pipe 6. After the water flows through the solenoid valve 3, it enters the static mixing pipe 6. The static mixing pipe 6 is equipped with spiral blades 61 arranged inside. There are 12 sets of spiral blades 61, with a density of 8 sets / 10cm. The water flows along the spiral blades 61, which can increase the ozone solubility in the water. According to the methylene blue test, the ozone solubility of 12 sets of spiral blades is >95% with a pipe length of 15cm. After the water flows through the static mixing pipe 6, it flows out from the outlet 102.

[0025] A sensor 7 for monitoring ozone concentration is installed on the outside of the water outlet 102. The sensor 7 is model MQ-131. The sensor 7 can monitor the ozone concentration at the water outlet in real time. The monitoring set value is 0.1ppm-0.4ppm, and the control accuracy is ±0.03ppm. The sensor 7 is connected to the control solenoid valve 3 through a wire. When the ozone concentration at the water outlet 102 reaches 0.45ppm, the sensor is forcibly de-energized and the solenoid valve 3 is closed simultaneously. At the same time, the normally closed pressure switch 5 controls the ozone generator 1 to shut down when there is no water flow. The controller realizes the function of dual threshold shutdown, which greatly improves the safety performance.

[0026] Sensor 7 can also be connected to ozone generator 1 in conjunction with a microcontroller and power control components. The microcontroller uses a PID adaptive algorithm to dynamically adjust the power of ozone generator 1 based on the real-time monitoring data of sensor 7. The monitoring setpoint is 0.1ppm-0.4ppm. By adjusting the ozone output in a timely manner through real-time monitoring data, the safety hazards of traditional timed and quantitative control are solved. When the ozone concentration at outlet 102 is higher than 0.35ppm, the sensor issues an early warning and reduces the power of ozone generator 1. When the ozone concentration at outlet 102 reaches 0.45ppm, the sensor forcibly cuts off the power, shutting down solenoid valve 3 and ozone generator 1.

[0027] The ozone generator 1 is connected to an external power cord to provide power to the controller.

[0028] The ozone sterilization controller for the sensor-operated faucet of this invention transmits a signal to the solenoid valve 3 via the sensor 2. The solenoid valve 3 controls the water flow into the jet pipe 4. The water pressure increases after passing through the jet pipe 4, reaching the set value of the normally closed pressure switch 5, which sends a signal to the ozone generator 1. The ozone generator 1 then turns on to generate ozone. The ozone enters the jet pipe 4 through the vent pipe 11. After passing through the solenoid valve 3, the water and ozone enter the static mixing pipe 6. The static mixing pipe 6 is equipped with spiral blades 61. When the water flows through the spiral blades 61, it can greatly increase the... The ozone dissolution rate is achieved to be >95%, and the ozone finally flows out from the outlet 102. A sensor 7 is also installed at the outlet 102. The sensor 7 is connected to the solenoid valve 3 through a wire. The sensor 7 can monitor the ozone content at the outlet 102 in real time. When the ozone content is greater than the set value, the sensor is forcibly de-energized and the solenoid valve 3 is closed simultaneously. At the same time, the normally closed pressure switch 5 controls the ozone generator 1 to shut down when there is no water flow. The controller realizes the function of dual threshold shutdown, which greatly improves the safety performance.

[0029] Finally, it should be noted that the above embodiments are only illustrative of the technical solutions of the present invention, and not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sensor-activated faucet ozone sterilization controller, comprising a housing (100), wherein the housing (100) is provided with an inlet (101) and an outlet (102), characterized in that, The housing (100) is equipped with an ozone generator (1), a sensing device (2), a solenoid valve (3), a jet pipe (4), and a normally closed pressure switch (5). The front end of the sensing device (2) is connected to the outside of the housing (100) as a sensing input terminal. The rear end of the sensing device (2) is equipped with two output wires that are respectively connected to the ozone generator (1) and the solenoid valve (3). The ozone generator (1) is equipped with a ventilation pipe (11). The air inlet of the ventilation pipe (11) is... 111) Connected to the ozone generator (1), the outlet (112) of the vent pipe (11) is connected to the throat (41) of the jet pipe (4), the top end of the jet pipe (4) is connected to the water inlet (101), the lower end of the jet pipe (4) is connected to a normally closed pressure switch (5), and the bottom end is connected to a solenoid valve (3). The normally closed pressure switches (5) are connected to the ozone generator (1) through wires; the solenoid valve (3) is connected to the static mixing pipe (6).

2. The sensor-activated faucet ozone sterilization controller according to claim 1, characterized in that, The sensing device (2) is located at the lower end of the ozone generator (1).

3. The sensor-activated faucet ozone sterilization controller according to claim 1, characterized in that, The jet tube (4) is located on the right side of the ozone generator (1). The inner diameter of the jet tube (4) gradually decreases from the top to the throat (41) and gradually increases from the throat (41) to the bottom of the jet tube (4).

4. The sensor-activated faucet ozone sterilization controller according to claim 1 or 3, characterized in that, The throat (41) of the jet tube (4) has an inner diameter of 2.6 mm, and the cone angle of the diffuser section at both ends of the throat (41) is 8°.

5. The sensor-activated faucet ozone sterilization controller according to claim 1, characterized in that, The static mixing pipe (6) is located on the side of the solenoid valve (3).

6. The sensor-activated faucet ozone sterilization controller according to claim 1, characterized in that, The static mixing tube (6) is equipped with spiral blades (61) arranged inside.

7. The sensor-activated faucet ozone sterilization controller according to claim 6, characterized in that, The spiral blades (61) are provided in 12 groups, with a density of 8 groups / 10cm.

8. The sensor-activated faucet ozone sterilization controller according to claim 1, characterized in that, A sensor (7) for monitoring ozone concentration is installed on the outside of the water outlet (102), and the sensor (7) is connected to the solenoid valve (3) through a wire.

9. The sensor-activated faucet ozone sterilization controller according to claim 8, characterized in that, The sensor's monitoring setting is 0.1ppm-0.4ppm.

10. The sensor-activated faucet ozone sterilization controller according to claim 8 or 9, characterized in that, The sensor (7) is connected to the ozone generator (1) in conjunction with the microcontroller, power control element, and the microcontroller adopts the PID adaptive algorithm to dynamically adjust the power of the ozone generator (1) based on the data monitored in real time by the sensor (7).

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