Sensing faucet ozone sterilization controller

Abstract

A sensing faucet ozone sterilization controller comprises a shell, a water inlet and a water outlet are formed in the shell, and an ozone generator, a sensing device, an electromagnetic valve, a jet pipe, a normally-closed pressure switch and a static mixing pipe are arranged in the shell. According to the ozone sterilization controller for the induction faucet, a signal is transmitted to the electromagnetic valve through the induction device, the electromagnetic valve controls water flow to enter the jet pipe, the pressure of the water flow passing through the jet pipe is increased to reach a set value of the normally-closed pressure switch, a signal is given to the ozone generator, and ozone enters the jet pipe through the breather pipe; water flow and ozone pass through an electromagnetic valve and then enter a static mixing pipe, a spiral blade is arranged in the static mixing pipe, and the ozone dissolution rate gt is achieved; 95%; the sensor is further arranged at the water outlet and connected with the electromagnetic valve through a wire, the sensor can monitor the ozone content at the water outlet in real time, when the ozone content is larger than a set value, the sensor is forcibly powered off, the electromagnetic valve is synchronously closed, meanwhile, the ozone generator is controlled to be closed, and the safety performance is greatly improved.

Description

Technical Field

[0001] The invention relates to an ozone sterilization controller for an induction faucet. Background Art

[0002] For the sake of hygiene, convenience, water conservation and environmental protection, more and more public places and places requiring high hygiene standards are using sensor faucets. However, the current traditional sensor faucets only realize the function of "non-contact start and stop" and cannot kill residual microorganisms, such as Escherichia coli, Staphylococcus aureus, etc.; conventional chemical disinfectants have the risk of secondary pollution and require frequent maintenance; ozone, as a broad-spectrum, high-efficiency and fast bactericidal agent, can quickly kill various pathogens, viruses and microorganisms that cause human and viral diseases. In particular, after ozone is dissolved in water, it has a stronger and faster bactericidal effect and no secondary pollution, so using ozone to treat water is an extremely effective way; but the existing faucet ozone sterilization controllers have the following shortcomings: 1. Due to the limitation of the mixing structure, the mixing efficiency of ozone and water is low, and a good sterilization effect cannot be achieved; 2. There is a risk of ozone leakage, which poses a safety hazard. Summary of the Invention

[0003] The invention provides an ozone sterilization controller for an induction faucet.

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

[0005] The induction faucet ozone sterilization controller includes a shell, which is provided with a water inlet and a water outlet. An ozone generator, a sensing device, a solenoid valve, a jet tube and a normally closed pressure switch are arranged inside the shell. The front end of the sensing device is connected to the outside of the shell as a sensing input end, and the rear end of the sensing device is provided with two output wires respectively connected to the ozone generator and the solenoid valve; a vent pipe is provided on the ozone generator, the air inlet of the vent pipe is connected to the ozone generator, the air outlet of the vent pipe is connected to the throat of the jet tube, the top of the jet tube is connected to the water inlet, the lower end of the jet tube is connected to the normally closed pressure switch, and the bottom end is connected to the solenoid valve. The normally closed pressure switch is connected to the ozone generator through a wire; the solenoid valve is connected to the static mixing tube.

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

[0007] Preferably, the jet tube is arranged on the right side of the ozone generator, and the inner diameter of the jet tube gradually decreases from the top to the throat, and 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 angles of the diffusion sections at the upper and lower ends of the throat are 8o .

[0009] Preferably, the static mixing tube is arranged at a side end of the solenoid valve.

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

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

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

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

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

[0015] Compared with the prior art, the induction faucet ozone sterilization controller of the present invention transmits a signal to the solenoid valve through the induction device. The solenoid valve controls the water flow into the jet tube. The water pressure passing through the jet tube increases and reaches the set value of the normally closed pressure switch, giving the ozone generator a signal. The ozone generator starts to produce ozone, and the ozone enters the jet tube through the vent pipe. The water flow and ozone pass through the solenoid valve and enter the static mixing tube. The static mixing tube is provided with spiral blades. When the water flows through the spiral blades, the dissolution rate of ozone can be greatly increased, achieving an ozone dissolution rate of >95%, and finally flows out from the water outlet; a sensor is also provided at the water outlet, and the sensor is connected to the solenoid valve through a wire. The sensor can monitor the ozone content at the water outlet in real time. When the ozone content is greater than the set value, the sensor is forced to cut off the power and synchronously close the solenoid valve. At the same time, when there is no water flowing through the normally closed pressure switch, the ozone generator is controlled to be turned off. The controller realizes the dual threshold shutdown function, which greatly improves the safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a first stereoscopic schematic diagram of the induction faucet ozone sterilization controller of the present invention.

[0017] Figure 2 This is a second stereoscopic schematic diagram of the induction faucet ozone sterilization controller of the present invention.

[0018] Figure 3 This is a third stereoscopic schematic diagram of the induction faucet ozone sterilization controller of the present invention. DETAILED DESCRIPTION

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

[0020] like Figures 1 to 3 As shown, the induction faucet ozone sterilization controller includes a shell 100, a water inlet 101 is provided at the top of the shell 100, and a water outlet 102 is provided at the bottom of the side wall.

[0021] An ozone generator 1, a sensing device 2, a solenoid valve 3, a jet tube 4 and a normally closed pressure switch 5 are arranged inside the shell 100. The sensing device 2 is arranged at the lower end of the ozone generator 1, and the front end of the sensing device 2 is connected to the outside of the shell 100 as a sensing input end. The rear end of the sensing device 2 is provided with two output wires, which are respectively connected to the ozone generator 1 and the solenoid valve 3; a vent pipe 11 is provided on the ozone generator 1, and 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 tube 4. PTFE is used to seal the air inlet 111 and the air outlet 112 to prevent ozone leakage.

[0022] The jet tube 4 is arranged on the right side of the ozone generator 1, and the top end of the jet tube 4 is connected to the water inlet 101. The inner diameter of the jet tube 4 gradually decreases from the top end to the throat 41, and gradually increases from the throat 41 to the bottom end of the jet tube 4. The inner diameter of the throat 41 of the jet tube 4 is 2.6 mm, and the cone angle of the diffusion section at the upper and lower ends of the throat 41 is 8 o , negative pressure efficiency increased by 30%.

[0023] The lower end of the jet tube 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 through two wires to control the switch of the ozone generator 1; when the sensing device 2 receives the signal, it transmits the signal to the solenoid valve 3, the solenoid valve 3 opens, and the water flows into the jet tube 4 from the water inlet 101, passes through the throat 41 of the jet tube 4, and the pressure increases. When the normally closed pressure switch 5 is triggered, when the pressure of the normally closed pressure switch 5 reaches the set value, a signal is given to the ozone generator 1. At this time, the ozone generator 1 is turned on, and ozone enters from the throat 41 of the jet tube 4 through the vent pipe 11; the function of the jet tube 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 being turned on asynchronously with the water flow, thereby preventing the problem of 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 tube 6. The water flows into the static mixing tube 6 after passing through the solenoid valve 3. The static mixing tube 6 is provided with spiral blades 61 arranged inside. There are 12 groups of spiral blades 61 with a density of 8 groups / 10 cm. The water flows along the spiral blades 61, which can increase the dissolution rate of ozone in water. According to the methylene blue test, the ozone dissolution rate of 12 groups of spiral blades is greater than 95% under a tube length of 15 cm. After passing through the static mixing tube 6, the water flows out from the water outlet 102.

[0025] A sensor 7 for monitoring ozone concentration is provided on the outside of the water outlet 102. The model of the sensor 7 is 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 forced to cut off the power and the solenoid valve 3 is closed synchronously. At the same time, the normally closed pressure switch 5 is in a state where there is no water flowing through, and the ozone generator 1 is controlled to be turned off. The controller realizes the dual-threshold shutdown function, which greatly improves the safety performance.

[0026] The sensor 7 can also be connected to the ozone generator 1 in conjunction with a microcontroller and a power control element. The microcontroller adopts a PID adaptive algorithm to dynamically adjust the power of the ozone generator 1 according to the real-time monitoring data of the sensor 7. The monitoring set value is 0.1ppm-0.4ppm. The output of ozone is adjusted in time through real-time monitoring data, which solves the safety hazards of traditional timing and quantitative control. When the ozone concentration at the water outlet 102 is higher than 0.35ppm, the sensor issues an early warning and reduces the power of the ozone generator 1. When the ozone concentration at the water outlet 102 reaches 0.45ppm, the sensor is forced to cut off the power, closing the solenoid valve 3 and the ozone generator 1.

[0027] The ozone generator 1 is externally connected with a power line for connecting to a power source to provide power to the controller.

[0028] The induction faucet ozone sterilization controller of the present invention transmits a signal to the solenoid valve 3 through the induction device 2. The solenoid valve 3 controls the water flow to enter the jet tube 4. The water pressure through the jet tube 4 increases and reaches the set value of the normally closed pressure switch 5. The ozone generator 1 is given a signal. The ozone generator 1 is turned on to generate ozone. The ozone enters the jet tube 4 through the vent pipe 11. The water flow and ozone pass through the solenoid valve 3 and then enter the static mixing tube 6. The static mixing tube 6 is provided with a spiral blade 61. When the water flow passes through the spiral blade 61, it can greatly increase the ozone flow. The ozone dissolution rate is improved to achieve an ozone dissolution rate of >95%, and finally flows out from the water outlet 102; a sensor 7 is also provided at the water outlet 102, and the sensor 7 is connected to the solenoid valve 3 through a wire. The sensor 7 can monitor the ozone content at the water outlet 102 in real time. When the ozone content is greater than the set value, the sensor is forced to cut off the power and the solenoid valve 3 is closed synchronously. At the same time, the normally closed pressure switch 5 is in a state where there is no water flowing through, and the ozone generator 1 is controlled to be closed. The controller realizes the dual-threshold shutdown function, which greatly improves the safety performance.

[0029] Finally, it should be noted that the above embodiments only illustrate the technical solutions of the present invention and do not limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An induction faucet ozone sterilization controller, comprising a housing (100), wherein the housing (100) is provided with a water inlet (101) and a water outlet (102), characterized in that: The housing (100) is provided with an ozone generator (1), a sensing device (2), a solenoid valve (3), a jet tube (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 end. The rear end of the sensing device (2) is provided with two output wires connected to the ozone generator (1) and the solenoid valve (3) respectively. The ozone generator (1) is provided with a vent pipe (11). The air inlet ( 111) is connected to the ozone generator (1), the air 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), and the normally closed pressure switch (5) is connected to the ozone generator (1) through a wire; the solenoid valve (3) and the static mixing pipe (6) are connected to each other.

2. The induction faucet ozone sterilization controller according to claim 1, characterized in that: The sensing device (2) is arranged at the lower end of the ozone generator (1).

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

4. The induction faucet ozone sterilization controller according to claim 1 or 4, characterized in that: The inner diameter of the throat (41) of the jet tube (4) is 2.6 mm, and the cone angles of the diffusion sections at the upper and lower ends of the throat (41) are 8 o .

5. The induction faucet ozone sterilization controller according to claim 1, characterized in that: The static mixing tube (6) is arranged at the side end of the solenoid valve (3).

6. The induction faucet ozone sterilization controller according to claim 1, characterized in that: Spiral blades (61) are arranged inside the static mixing tube (6).

7. The induction 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 / 10 cm.

8. The induction faucet ozone sterilization controller according to claim 1, characterized in that: A sensor (7) for monitoring ozone concentration is provided outside the water outlet (102), and the sensor (7) is connected to the solenoid valve (3) via a wire.

9. The induction faucet ozone sterilization controller according to claim 8, characterized in that: The monitoring setting value of the sensor is 0.1ppm-0.4ppm.

10. The induction 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 a microcontroller and a power control element. The microcontroller adopts a PID adaptive algorithm to dynamically adjust the power of the ozone generator (1) according to the data monitored in real time by the sensor (7).

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