TWI388509B - UV water filter control device and water pressure switch group - Google Patents

Description

UV water filter control device and water pressure switch group

The invention provides a UV water filter control device, in particular to a control device for automatically controlling the activation or shutdown sterilization process of the ultraviolet lamp in the water filter by a mechanical water pressure switch group.

No matter how modern the city is, its water supply system must be distributed to each user after passing through a complex small reservoir, pressurization station and pipeline. In the process of water supply system operation, it may be because The pipeline is old, leaking, public works construction or reservoir dirty, etc., so that the water obtained by the user usually contains impurities and E. coli. It must be filtered and boiled before drinking. Otherwise, it may be Causes symptoms such as stomach upset.

In order to solve the problem of drinking water, there are various kinds of water filters on the market that can be selected by users. For example, a water filter that filters impurities in water by multi-layer filter, RO reverse osmosis water filter, and UV ultraviolet lamp. A sterilizing water filter, etc., wherein the UV-ray lamp sterilizing water filter has a function of filtering impurities and ultraviolet sterilizing, so it is quite good for users who are worried about the number of E. coli colonies in water. s Choice.

The principle of the UV-ray lamp sterilizing water filter is to install an ultraviolet lamp in the water filter. When the user opens the water valve (faucet) to take water, the water is activated by a sensor to activate the ultraviolet lamp to make the ultraviolet light. The lamp emits ultraviolet sterilization; when the user closes the water valve, it can make purple The external lamp is closed to save energy and avoid the life of the UV lamp due to long-term start-up.

In addition, when the user closes the water valve, since the water that has just entered the water filter has not been sufficiently sterilized by the ultraviolet light, if the light tube stops immediately, the bacteria in the water will rapidly proliferate, and will still be used in the next water intake. A large amount of bacteria's water, especially overnight water, can be particularly severe. Therefore, the UV ultraviolet lamp sterilizing water filter usually has a delay circuit on the control circuit to delay the closing time of the ultraviolet lamp. For example, the US Patent No. WO0071227 (USER-ACTIVATED ULTRA-VIOLET WATER TREATMENT UNIT) is especially Delayed UV lamp tube closure time is designed.

Such a method of delaying the closing of the ultraviolet lamp by the delay circuit can be achieved by using a capacitor discharge or a timing device (TIMER) in the design of the control circuit, but there is still a possibility of malfunction. The main reason is that the simple digital circuit is easily affected by static electricity or magnetic field, and a water flow detector (water flow switch) must be installed at the water inlet or the water outlet. However, the water flow detector cannot adjust the water. The sensitivity of the pressure is often unable to sense the action. When the user turns the water valve on or off, the water flow detector provides an opening or closing signal to the control circuit for related startup and delay closing control; in other words, if the water flow detector is damaged or has poor contact, etc. When it will affect the normal closing or closing of the UV lamp, plus the related delay electronic components such as capacitors, electricity, timing devices, etc., most of the use can not resist electromagnetic interference, so that the overall delay circuit will still malfunction. The situation happened.

The object of the present invention is to provide a control device for automatically controlling the activation or shutdown of the ultraviolet lamp in the water filter by a mechanical water pressure switch group, since the water pressure switch is mechanically It has the advantage of being more actionable and longer lasting.

In order to achieve the above object, the control device of the present invention uses a water filter having an ultraviolet lamp inside, and is provided with a water inlet passage in the water inlet seat below the water filter, and the water inlet passage is provided with a bypass port. Connected to a mechanical water pressure switch group, when the water flows through the water inlet channel into the water filter, the water pressure switch group can be synchronized to activate the ultraviolet lamp in the water filter to emit ultraviolet sterilization, and when the water flow stops, the water The pressure switch group can delay the closing time of the UV lamp, so that the water remaining in the water filter can be fully sterilized.

In implementation, the water pressure switch group further includes a one-way valve connected to the bypass port, a pressure piston connected to the one-way valve, a water inlet chamber between the pressure piston and the one-way valve, and one connected to the water inlet a return hole of the chamber and the bypass port, and an elastic push switch that is separated from the pressure piston outside the pressure piston.

When the water flows through the water inlet channel into the water filter, a part of the water can enter the water pressure switch group through the bypass port and enter the water inlet chamber through the check valve; since the check valve can only enter the water in one direction, The increase of the water inlet can increase the water pressure in the inlet water chamber, and the increased water pressure in the inlet water chamber can displace the pressure piston, and the elastic pressing switch presses to form a circuit to conduct, thereby allowing the ultraviolet lamp to start, allowing the filter to enter. The water in the water is sterilized by irradiation with an ultraviolet lamp.

During the above-mentioned process of starting the ultraviolet lamp, the water filter continues to enter the water, which will increase the amount of water entering the inlet chamber. When the amount of water increases until the inlet chamber is saturated, there is a space between the inlet chamber and the bypass port. The return hole, so the water that continues to enter the inlet chamber will flow back through the return hole to the bypass port.

The diameter of the return hole is smaller than that of the bypass port, and the effect is that the water in the water inlet chamber is returned to the bypass port except when the water enters, and the elastic pressure pressed by the pressure piston is pressed when the water filter stops entering the water. The switch will push back against the pressure piston due to the elastic restoring force. However, due to the blocking action of the check valve, the water in the inlet chamber can only slowly return (pressure relief) to the bypass port through the small-diameter return hole. Although the elastic push switch is pressed against the pressure piston, it cannot immediately return to the unpressed state to disconnect the circuit.

That is, when the water filter stops entering the water, the elastic push switch can push back to the pressure piston in the reverse direction by the slow return of the return hole, and can only return to the unpressed state after a period of time. The circuit is disconnected, whereby the function of delaying the closing of the ultraviolet lamp can be achieved.

In implementation, an adjusting button may be arranged between the water inlet chamber and the return hole to control the flow rate of the return hole, thereby prolonging or shortening the water return speed and time in the water inlet chamber, and further enabling the elastic pressing switch circuit to be disconnected. Be controlled.

In addition, the water pressure switch group can control the activation or shutdown of the ultraviolet lamp through a control circuit, and the control circuit can further control an ozone generator and a magnetic wave vibrator in addition to being electrically connected to the ultraviolet lamp tube. Start or shut down.

Wherein, the ozone generator is connected to the water inlet passage through a one-way air valve, and when the water flow enters the water filter through the water inlet passage, the water inlet flow rate can generate a negative pressure on the ozone generator (the principle of the cypress effort) The ozone (O3) generated by the ozone generator can be outputted into the water inlet passage through the one-way air valve, and when the water flows through the water inlet passage into the water filter, the ozone can be mixed to increase the sterilization effect.

The magnetic wave vibrator is arranged in the water filter, and uses the principle of magnetic wave vibration to vibrate the water in the water filter, and can accelerate the reduction and stabilization of ozone (O3) mixed into the water filter into oxygen molecules (O2). .

In addition, the above control circuit can also be equipped with a microprocessor (MCU) and an integrated circuit (IC) in accordance with the requirements, and can extend the ultraviolet lamp closing time or activate the ultraviolet lamp to kill at an appropriate timing. Bacterial program. For example, when the water pressure switch group disconnects the circuit, the UV lamp is turned off after a few seconds to extend the sterilization time and protect the UV lamp; or, when the UV lamp is turned off for several hours, restart to avoid the water filter. The residual water breeds bacteria for a long time without being used.

Compared with the prior art, the present invention utilizes a mechanical water pressure switch group to automatically control the control device for starting or closing the sterilization process of the ultraviolet lamp in the water filter. Since the water pressure switch is mechanically actuated, the action is more accurate and used. The advantage of long life.

The invention will be further described in detail below with reference to the embodiments of the drawings.

As shown in the first and second figures, the control device of the present invention is used on a water filter 2 having an ultraviolet lamp tube 1 therein. The water filter 2 has an accommodation space 3 inside and a water outlet 4 above. A filter core 5 is disposed between the accommodating space 3 and the water outlet 4, and a water inlet seat 6 is disposed under the water filter 2, and the water inlet seat 6 is connected with a power source 7 required for the ultraviolet lamp tube 1 to operate; when the water flows through After the water seat 6 enters the accommodating space 3, it can be sterilized by the ultraviolet lamp tube 1 and the filter element 5 filters the impurities, and then the water is discharged from the water outlet seat 4.

As shown in the second and third figures, the control device of the present invention is disposed in the water inlet 6 and includes a water inlet passage 10 in the water inlet seat 6, the water inlet passage 10 is provided with a water inlet 11 and a water outlet. a nozzle 12, and a bypass port 13 between the water inlet 11 and the water outlet 12, the bypass port 13 is connected to a mechanical water pressure switch group 20, when the water flows through the water inlet passage 10 into the water filter 2, The water pressure switch group 20 can be actuated synchronously, and the ultraviolet lamp 1 in the water filter 2 is activated to emit ultraviolet sterilization, and when the water flow stops, the water pressure switch group 20 can delay the closing time of the ultraviolet lamp 1 to leave the filter in the filter. The water in the water tank 2 can be sufficiently sterilized.

As shown in the third and fourth figures, the water pressure switch group 20 further includes a connection to the bypass port. a check valve 21 of 13 , a pressure piston 22 connected to the check valve 21 , a water inlet chamber 23 between the pressure piston 22 and the check valve 21 , and a water inlet chamber 23 and a bypass port 13 The return hole 24 and an elastic push switch 25 are disposed outside the pressure piston 22 from the pressure piston 22.

When the water flows through the water inlet passage 10 into the water filter 2, a part of the water can enter the water pressure switch group 20 through the bypass port 13 and enter the water inlet chamber 23 through the check valve 21; since the check valve 21 can only The water is introduced in one direction, so that the water pressure in the inlet chamber 23 is increased as the amount of water inflow increases, and the increased water pressure in the inlet chamber 23 allows the pressure piston 22 to be displaced, and the elastic switch 25 is pressed and pressed. The formation of the circuit is turned on, and the ultraviolet lamp 1 described above is activated to allow the water entering the water filter 2 to be sterilized by the irradiation of the ultraviolet lamp 1.

As shown in the fifth figure, during the above-mentioned process of starting the ultraviolet lamp tube 1, the water filter 2 continues to enter the water, so that the amount of water entering the water inlet chamber 23 is continuously increased, and when the water amount is increased to the inlet chamber 23 being saturated, Since a return hole 24 is provided between the inlet chamber 23 and the bypass port 13, water that continues to enter the inlet chamber 23 is returned to the bypass port 13 through the return port 24.

The diameter of the return hole 24 is smaller than that of the bypass port 13, and its function is to return the water of the water inlet chamber 23 to the outside of the bypass port 13 except for the water inlet. When the water filter 2 stops the water inlet, the pressure is pressed by the pressure piston 22. The elastic push switch 25 is reversely urged against the pressure piston 22 by the elastic restoring force, but due to the blocking action of the check valve 21, the water in the water inlet chamber 23 can only slowly flow back through the small-diameter return hole 24 to Since the bypass port 13 is gradually released from pressure, the elastic pressing switch 25 abuts against the pressure piston 22, but cannot immediately return to the unpressed state to disconnect the circuit.

That is, when the water filter 2 stops the water inlet, the elastic push switch 25 is pushed against the pressure piston 22 in the reverse direction by the slow return and pressure relief of the return hole 24, only after a period of time until the water is introduced. The water pressure in the chamber 23 is less than the elastic restoring force of the elastic push switch 25, so as to be restored to the unpressed The voltage is turned off and the circuit is turned off, whereby the function of delaying the closing of the ultraviolet lamp 1 can be achieved.

As shown in the sixth figure, an adjustment button 26 may be disposed between the water inlet chamber 23 and the return hole 24 to control the flow rate of the return hole 24, thereby extending or shortening the water return speed and time in the water inlet chamber 23. And further, the time for the circuit of the elastic push switch 25 to be disconnected is controlled; for example, the position of the adjusting button 26 in the sixth figure is larger than that of the fifth figure, so that the return hole 24 can allow a larger flow rate. The water is returned to the bypass port 13, so that the water in the water inlet chamber 23 is accelerated to the bypass port 13, and the time during which the circuit of the push switch 25 is broken is shortened, and the delay time of the ultraviolet lamp tube 1 is further shortened.

As shown in the second and seventh embodiments, the present invention may further include a control circuit 30 through which the elastic pressing switch 25 can control the activation or deactivation of the ultraviolet lamp 1 through the control circuit 30. In addition to being electrically connected to the ultraviolet lamp tube 1, the activation or shutdown of an ozone generator 40 and a magnetic wave vibrator 50 can be further controlled.

The ozone generator 40 is connected to the water inlet passage 10 through a one-way air valve 41. When the water flows through the water inlet passage 10 into the water filter 2, the elastic push switch 25 transmits the ultraviolet light tube 1 through the control circuit 30. And the ozone generator 40, the ozone generator 40 generates ozone; at the same time, the water flow rate of the water flowing through the water inlet passage 10 can generate a negative pressure to the ozone generator 40 connected to the one-way air valve 41. The ozone (O3) generated by the ozone generator 40 can be outputted into the water inlet passage 10 via the one-way air valve 41, and when the water flows through the water inlet passage 10 into the water filter 2, ozone can be mixed to increase sterilization. effect.

The magnetic wave vibrator 50 is disposed in the water filter 2, and the principle is that the water in the magnetic wave shock filter 2 is used to generate vibration and agitation, so when the control circuit 30 simultaneously activates the magnetic wave vibrator 50, the acceleration can be accelerated. Ozone (O3) mixed into the water filter is reduced and stabilized into oxygen molecules (O 2) In addition to strengthening the bactericidal effect of the overall water filter 2, and increasing the safety of water quality.

In addition, the control circuit 30 can also be equipped with a microprocessor (MCU) and an integrated circuit (IC) (not shown) in accordance with requirements, and can extend the closing time of the ultraviolet lamp 1 at an appropriate timing, or activate the ultraviolet lamp 1 for sterilization. program.

For example, when the water pressure switch group 20 disconnects the circuit, the control circuit 30 can control the ultraviolet lamp tube 1 to be turned off after a few seconds or minutes to prolong the sterilization time and protect the ultraviolet lamp tube 1 so that the ultraviolet lamp tube 1 is not compared. Reduced service life due to frequent startup and shutdown

Alternatively, after the ultraviolet lamp tube 1 is turned off for several hours, the ultraviolet light tube 1 is controlled to be restarted by the control circuit 30 to prevent the water filter 2 from being used for a long time to cause residual water to breed bacteria, especially for a long time at night. When you use it for the first time in the morning, you can avoid a lot of bacteria in the water.

The above description of the embodiments and the drawings are intended to be illustrative of the preferred embodiments of the invention, and are not intended to limit the scope of the invention, and the methods, structures, devices, features, etc. of the present invention are similar or identical. The purpose of creation and the scope of patent application.

1‧‧‧UV tube

2‧‧‧Water filter

3‧‧‧ accommodating space

4‧‧‧Water stand

5‧‧‧ filter heart

6‧‧‧Water inlet

7‧‧‧Power supply

10‧‧‧Water inlet channel

11‧‧‧ Inlet

12‧‧‧Water outlet

13‧‧‧ bypass

20‧‧‧Water pressure switch group

21‧‧‧ check valve

22‧‧‧pressure piston

23‧‧‧ water inlet

24‧‧‧Return hole

25‧‧‧Elastic push switch

26‧‧‧Adjustment button

30‧‧‧Control circuit

40‧‧‧Ozone generator

41‧‧‧One-way air valve

50‧‧‧Magnetic wave vibrator

First: An overall exploded view of the ultraviolet filter of the present invention.

Second: Schematic diagram of the overall structure of the ultraviolet filter of the present invention.

Third figure: Schematic diagram of the position of the control device of the present invention.

Fourth figure: Schematic diagram of the structure of the water pressure switch group of the present invention.

Fig. 5 is a schematic view showing the pressure relief operation of the water pressure switch group of the present invention.

Fig. 6 is a schematic view showing the flow rate adjustment of the water pressure switch group of the present invention.

Figure 7 is a block diagram showing an embodiment of the control device of the present invention.

13‧‧‧ bypass

20‧‧‧Water pressure switch group

21‧‧‧ check valve

22‧‧‧pressure piston

23‧‧‧ water inlet

24‧‧‧Return hole

25‧‧‧Elastic push switch

26‧‧‧Adjustment button

Claims (11)

An ultraviolet water filter control device is provided with a water inlet passage in a water inlet seat below the water filter, the water inlet passage is provided with a water inlet, a water outlet, and a water inlet and a water outlet. The bypass port is connected with a mechanical water pressure switch group, and the water pressure switch group further comprises: a check valve connected to the bypass port to enter the water supply flow, and a pressure piston connected to the check valve, a water inlet chamber between the pressure piston and the check valve, a return hole connected to the water inlet chamber and the bypass port, and an elastic push switch spaced apart from the pressure piston outside the pressure piston; the water flow enters through the bypass port The water pressure switch group enters the water inlet chamber through the one-way valve, so that the water pressure in the water inlet chamber is increased to displace the pressure piston, and the elastic pressing switch is pressed to form a circuit to start the ultraviolet lamp in the water filter for sterilization. When the water filter stops entering the water, the water in the water inlet chamber slowly returns to the bypass port through the return hole, and the elastic restoring force of the elastic pressing switch is reversely pushed against the pressure piston until the water pressure in the water inlet chamber is less than Of pressing the elastic restoring force of the switch so that the circuit is disconnected, thereby to delay the turn off the UV lamp. The ultraviolet filter control device according to claim 1, wherein an adjustment button is further disposed between the inlet chamber and the return hole to control the flow rate of the return hole to the bypass port. The ultraviolet filter control device according to claim 1, wherein the water pressure switch group controls the activation or the shutdown of the ultraviolet lamp through a control circuit. The ultraviolet filter control device of claim 3, wherein the water inlet channel is further connected to an ozone generator controlled by the control circuit to be turned on or off. The ultraviolet filter control device according to claim 4, wherein the ozone generator is connected to the water inlet passage through a one-way air valve, and the water flow rate is obtained when the water flows through the water inlet passage into the water filter. A negative pressure is generated to the ozone generator so that the ozone generated by the ozone generator can be output to the water inlet passage through the one-way air valve. The ultraviolet filter control device according to claim 3, wherein the water filter is further provided with a magnetic wave vibrator controlled by the control circuit breaker to be turned on or off. The ultraviolet filter control device according to claim 3, wherein the control circuit is provided with an integrated circuit to extend the ultraviolet lamp closing time. The ultraviolet filter control device according to claim 3, wherein the control circuit is provided with a microprocessor, and the ultraviolet lamp is activated without using a water filter for a long time to perform a sterilization process. A water pressure switch group of a UV filter comprises: a check valve connected to a water supply flow passage of a water inlet passage of the water filter; a pressure piston connected to the check valve, between the pressure piston and the check valve A water inlet chamber is provided, and the water flows through the one-way valve into the water inlet chamber, so that the water pressure in the water inlet chamber is increased to cause the pressure piston to be displaced; an elastic push switch located outside the pressure piston and separated from the pressure piston, when the pressure piston is water When the pressure is increased, the elastic pressing switch can be pressed to be turned on, and the ultraviolet lamp in the water filter is activated for sterilization; and a return hole connected to the water inlet chamber and the water inlet passage, when the water filter stops entering the water, the water inlet The water in the room is returned to the water inlet passage by the return hole, and the elastic restoring force of the elastic pressing switch is reversely pushed against the pressure piston until the water pressure in the water inlet chamber is smaller than the elastic restoring force of the elastic pressing switch, thereby breaking the circuit. Turn off the UV lamp with a delay. The water pressure switch group of the ultraviolet filter according to claim 9, wherein the water inlet passage of the water filter is provided with a water inlet, a water outlet, and a water inlet and a water outlet. The port is connected to the bypass port, and the return hole is returned to the water inlet passage through the bypass port. The water pressure switch group of the ultraviolet water filter according to claim 9, wherein an adjustment button is further disposed between the water inlet chamber and the return hole to control the flow rate of the return hole to the water inlet passage.