JPS63291686A - Water sterilization purification device - Google Patents

Abstract

PURPOSE:To obtain bath water free from turbidity and odor and, at the same time, keep it clean without multiplication of bacteria in a filter material part by arranging water-purifying filter material and an ultraviolet lamp in a water path. CONSTITUTION:A water-purifying filter material 1 and an ultraviolet lamp 2 for sterilization of the filter material 1 are arranged in a water path. The ultraviolet lamp 2 is arranged in a space 4 in a water intercepter 5. That is, scale and bacteria in a bath tub are removed by the filter effect of a filter material and sterilization effect of an ultraviolet lamp, thus obtaining bath water without turbidity or odor. In addition, the filter material is sterilized by means of an ultraviolet lamp, so that no bacteria multiply in the filter material part and cleaning of bath water results.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a water sterilization and purification device for sterilizing and purifying bath water stagnant in bathtubs for home and commercial use.

Conventional technology The bath water that remains in the bathtub becomes dirty every time you take a bath, and after several hours, there is a proliferation of 105 to IQe bacteria/ml.

Problems to be Solved by the Invention Due to the proliferation of these bacteria, the bath water has an unpleasant odor and is slimy, and also has floating scales, making the situation extremely unsanitary. On the other hand, conventional bathtubs and bathtubs do nothing to prevent this water pollution, and simply heat water.

Means for Solving the Problems In order to solve the above problems, the water sterilization and purification device of the present invention includes:
A filter medium for purifying water and an ultraviolet lamp for sterilizing and purifying the water and the filter medium were arranged in a flow channel.

Function: With this configuration, bath water becomes clean because scale is removed by the filter effect of the filter medium and germs are sterilized by the ultraviolet lamp. On the other hand, since the filter medium is sterilized by the ultraviolet lamp, the filter medium is clean and free of bacteria growth.

Example Embodiments of the present invention will be described with reference to FIGS. 1 to 7.

FIG. 1 is a sectional view of a water sterilization and purification apparatus which is an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line AA' in FIG. The water sterilization and purification device has a main configuration in which a filter medium 1 that purifies water and an ultraviolet lamp 2 that sterilizes the water and the filter medium 1 are arranged in an internal space of the filter medium 1. The ultraviolet lamp 2 includes a water shield 5 that is installed in the flow channel 3 and has a space 4 inside, an ultraviolet lamp 2 that is placed in the space 4 in the water shield 5, and The structure includes a water detection electrode 6 which is placed in the space 4 and becomes conductive when water enters to stop power transmission to the ultraviolet lamp 2, thereby blocking water.

Water flows in from the inflow lower, has scale removed by the filter medium 1, is sterilized by the ultraviolet lamp 2, and flows out from the outflow port 8, forming a flow channel (■) 3.

On the other hand, the ultraviolet lamp 2 placed in the internal space of the filter medium 1 irradiates the filter medium 1 to prevent the growth of bacteria.

The ultraviolet lamp 2 is a waterproof type with a center wavelength of 253.7 nm, and is made of quartz or ultraviolet transmitting glass (silicate glass with low Fe2O3 content,
The irradiation part is made of low alkali borosilicate glass, sulfate glass). The ultraviolet lamp 2 is provided with electric lead wires 9 for power transmission, and these electric lead wires 9 are led out from the upper and lower parts of the ultraviolet lamp 2, and are led out from one end of the ultraviolet lamp 2. It is possible to configure things, etc.

The material of the water barrier 5 is one or more selected from the group of quartz, fluororesin, and ultraviolet transmitting glass (silicate glass containing low F/203, low alkali borosilicate glass, and phosphate glass). , preferably quartz or fluororesin-coated quartz. Quartz or fluororesin has particularly good transmission of ultraviolet rays, so sterilization can be carried out effectively.

The water detection electrode 6 is an electrode made of titanium, stainless steel, copper, platinum-plated titanium, etc., installed under the shade of two trees, and is constantly supplied with a power source of 24 V or less AC. Therefore, a circuit that becomes conductive when water enters and stops power transmission to the ultraviolet lamp 2 is activated.

This water detection electrode 6 uses a stainless steel rod because of its low cost, and is supplied with 12 V AC.

The AC voltage of 12V was selected because the life of the water detection electrode 6 would be extended by alternating current, and the impact on the human body due to leakage of water during conduction would be reduced by using AC voltage of 12V.

The water detection electrode 6 is electrically connected to a control circuit section (shown in FIG. 3) through an electric lead wire 10.

In the water sterilization and purification device, a filter medium 1 is placed in a metal container 11, a water blocker 5 is placed in the inner space of the metal container 11, and water moves 360 degrees around the filter medium 1 and the blocker 5. I did it like that. Therefore, the light of the ultraviolet lamp 2 is utilized 360 degrees to efficiently sterilize the water and the filter medium 1.

It is also possible to arrange the filter medium 1 and the water barrier 6 at one end of the metal container 11 and to irradiate the water and the filter medium 1 with only one end of the light source of the ultraviolet lamp 2.

FIG. 3 is an example of an electric circuit diagram used in the water sterilization and purification apparatus of the present invention. AC 12V, which is converted from 100V by the transformer 12, is applied to the water detection electrode 6. - The AC 12V is converted to DC by the diode 13 and input to the comparator 14. The comparator 14 compares when there is no conduction of the water detection electrode 6 (no water has entered the space 4 in the water shield s) and when there is continuity (water has entered the space 4). The input signal is input to transistor 15 only when there is abnormal conduction.
This activates the relay 16 and stops power transmission to the ultraviolet lamp 2. On the other hand, under normal operating conditions with no conduction to the water detection electrode 6, the comparator 14 is connected to the transistor 15.
Since no input is made to the relay 16, the relay 16 is not activated and there is no problem in supplying electricity to the ultraviolet lamp 2.

The ultraviolet lamp 2 is turned on or clarified by opening and closing a switch 17. When the switch 17 is turned on, the glow lamp 18 is turned on, and then the ultraviolet lamp 2 is turned on. The glow lamp 18 is turned off at the same time as the ultraviolet lamp 2 is turned on, and these controls are performed by a ballast 19.

FIG. 4 is a perspective view of a filter medium according to an embodiment of the present invention. The filter medium 1 is made of ceramic, wire mesh, or fluororesin, and has a pipe shape. This filter medium 1 has 5 μm pores with a vaporization rate of 40%, and removes scale by a filter effect.

By arranging an ultraviolet lamp in the internal space of this filter medium 1, a small-sized water sterilization and purification device can be obtained.

FIG. 5 is a perspective view of a filter medium according to another embodiment of the present invention. The filter medium 1 consists of a filament 20 made by melt-bonding polypropylene fibers, and the fibers are wound around a core (ultraviolet irradiated part) 21 made of metal or Sewominoku to a diameter of 5 μm.
It forms countless m pores. The pore diameter of this filter medium 1 is 1 to
100 μm, preferably 2 to 40 μm. this is,
This is because this pore size removes scale best. on the other hand,
The higher the porosity, the better water will flow through it, but it was set at 20 to 50% in consideration of the material strength structure. Further, the filter medium 1 may be a membrane in which a ceramic porous material having a small pore size is laminated on the upstream side and a ceramic porous material having a large pore size on the downstream side, or a disposable type organic filter may be used. The filter medium 1 may be not only pipe-shaped but also plate-shaped, and a plurality of filter media 1 may be combined to form a filter.

This water sterilization and purification device has on-off valves 22c, 2, in addition to the inlet lower and outlet 8 in which on-off valves 22a, 221) are arranged.
It has an inlet lower ′ and an outlet 8′ in which 2d are arranged.

The flow channel (
I) 23 is a flow channel that flows backward through the filter medium 1, and an on-off valve 2
Water flows by opening valves 2c and 22d and closing valves 22a and 22b.

In addition, in the case of the flow channel (I) 3 to be sterilized and purified, the on-off valve 22
a and 22b open, and on-off valves 22c and 22d close. Note that the water channel (II) 23 may be a water channel for sterilizing and purifying, and the water channel (■) 3 may be a water channel for backwashing.

The filter medium 1 is configured to be detachable by opening and closing a threaded portion 24.

FIG. 6 shows an embodiment in which the water sterilization and purification device of the present invention is applied to a bathtub. The water sterilization and purification device 29 is arranged in the bath circulation flow path 32 of the bath pot 30 and the bathtub 31. Water is transferred between the bath pot 30 and the bathtub 31 through a bath circulation flow path 32.

The ultraviolet lamp 2 having a center wavelength of 253.7 nm is removably arranged in the bath circulation flow path a2, and the ultraviolet lamp 2 has a center wavelength of 253.7 nm.
It lights up in conjunction with. In other words, the circulation pump 33 is activated when the ultraviolet lamp 2 is turned on, and the circulation pump 33 is activated when the ultraviolet lamp 2 is turned off.
3 stops working. The water in the bathtub 31 flows into the bath circulation flow path 32 in the bath pot 30, passes through the filter medium 1, and then comes into contact with the ultraviolet lamp 2. Passage of filter media 1 and ultraviolet lamp 2
The bathtub water is purified and sterilized by the irradiation, and returns to the bathtub 31 through the jet device 36 disposed at the outlet 35 of the return path 34. On the other hand, an outflow port 38 of a filter unit a7 is arranged at the return exit section 35, and the bathtub water that flows in from the inflow port 39 arranged in the bathtub 31 is filtered to remove hair by a filter 40 in which a 100-mesh wire mesh is arranged. , after flowing into the bath circulation channel a2 from the outlet a8, the water flows back into the bathtub 3 from the jet device 36.
1, forming a bypass flow path for water returning to water.

An example of a configuration in which a jet device is arranged in a bath circulation flow path is shown in the seventh example.
As shown in the figure.

The jet device 36 is arranged at the return path outlet portion 35 of the bath circulation flow path 32. Its configuration includes a nozzle 41, a mixing chamber 42
, an air inflow pipe 43. Its operation is nozzle/l/4
1 into the mixing chamber 42, air is sucked in from the air inlet 43 by the vacuum generated around the mixing chamber 42, and is discharged into the bathtub 31 from the discharge port 36 along with the jet. On the other hand, an outlet 38 of a filter 22) 37 is arranged around the mixing chamber 42, and the water from which scale has been removed is sucked in by the vacuum generated by the jet, and the water is directed along with the jet. The water is discharged into the bathtub 31 from a discharge port a6 which can be changed arbitrarily. Note that a filter 40 such as a wire mesh is disposed in the filter unit 37 in the middle of the flow path, and hair is removed by passing the bath water.

Since the circulation pump 3a is placed upstream of the water sterilization and purification device a3, it operates normally without air leakage. Further, the circulation flow rate is 10e/min or more, preferably 161
/min or more improves circulation efficiency and shortens the time required for sterilization.

On the other hand, the product of the time it takes the bath water to pass in one bath through the container that is irradiated by the UV lamp 2 and the UV irradiance of the UV lamp 2 is 10 to 105 μW11@c/C! n2
is optimal, and it is better for this container to be vertically long rather than horizontally wide.

The water sterilization and purification apparatus shown in FIGS. 1 to 4 was prototyped, and the effects of the present invention were evaluated.

The water sterilization purification device has a porosity of 40% with 5μm pores inside a stainless steel metal container with an internal volume of 1.5e.
Filter material made of ceramic pipe (filtration area 560 cm)
2) and furthermore, an ultraviolet lamp is placed in the center of the ceramic filter medium to sterilize the water and the filter medium.

This ultraviolet lamp has a waterproof 13W output lamp (UV irradiance 56μW/C!n2) and two stainless steel water detection electrodes that are supplied with AC 12V in the internal space of a water shield made of a quartz tube. It has a structure that isolates it from water. This water detection electrode becomes conductive when water enters and stops power transmission to the ultraviolet lamp.

This water sterilization and purification device was attached to a bathtub having a jet device as shown in FIGS.
I used warm water C. Four adult men bathed in this bathtub.
Move the circulation pump after leaving it for one day (flow rate 22e/m1n)
The results of measuring the turbidity and number of viable bacteria are shown in FIGS. 8 and 9.

It can be seen that the turbidity and the number of viable bacteria decrease over time, indicating that the hot water is becoming cleaner.

Next, in order to evaluate the degree of reproduction of famous gardens in the filter media,
After the above experiment was completed (after circulating 200e bath water for 2 hours), the filter medium was removed and immersed in pre-sterilized pure water (0 bacteria/mg) for 10 minutes to measure the number of bacteria. As in the present invention, the number of Ai was 36 in which the filter medium was sterilized with an ultraviolet lamp, but the number of Ai was 2 x 106 in the case of a structure in which the filter medium and the ultraviolet lamp were stored in separate containers and the filter medium was not sterilized with the ultraviolet lamp. Bacterial growth was observed at 100 ml/m (l).

Effects of the Invention As described above, the water sterilization and purification device of the present invention has a configuration in which a filter medium for purifying water and an ultraviolet lamp for sterilizing the water and the filter medium are arranged in the flow channel. Since it is removed by the filtering effect of the filter medium and the sterilizing effect of the ultraviolet lamp, clean bath water without turbidity or odor can be obtained.

(i) Since the filter media is sterilized by ultraviolet lamps, the filter media is clean and free of bacteria growth.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a water sterilization and purification device which is an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A' in Fig. 1, Fig. 3 is an electric circuit diagram of the same device, and Fig. 4 is A perspective view of a filter medium in the same device, FIG. 5 is a perspective view of a filter medium in another embodiment,
FIG. 6 is a sectional view of a bathtub to which the same device is applied, FIG. 7 is a sectional view of the jet device in FIG. 6, FIG. 8 is a characteristic diagram of the same device, and FIG. 9 is a characteristic diagram of the same device. 1...filter material, 2...ultraviolet lamp, 3
・・・・・・First flow channel for sterilization and purification, 23...
...Second flow channel for backwashing the filter medium, 29...Water sterilization and purification device. Name of agent: Patent attorney Toshio Nakao and 1 other person3-
Rakisuigo (1) 1st, JZ3-Ryusui? ! ! - (Pi Figure 2 Figure 3 Figure 4 Figure 5 Figure 7 Figure 8 Circulating Light Sutra Renginma (minute 2)

Claims (5)

[Claims] (1) A water sterilization and purification device in which a filter medium for purifying water and an ultraviolet lamp for sterilizing water and the filter medium are arranged in a flow channel. (2) The water sterilization and purification device according to claim 1, wherein the first flow channel for sterilizing and purifying is provided with a second flow channel for backwashing the filter medium. (3) The water sterilization and purification device according to claim 1, wherein an ultraviolet lamp is arranged in the inner space of the filter medium. (4) The water sterilization and purification device according to claim 1, wherein the ultraviolet irradiated material of the filter medium is ceramic or metal. (5) The water sterilization and purification device according to claim 1, wherein the filter medium has a pipe-like or plate-like shape.