JPH11207324A - Water purifying and sterilizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the assembling cost and the number of parts by integrating a temp. detector and a terminal part of an electrode plate into one body. SOLUTION: The water purifying and sterilizing device provided with an adsorbing part 20 of a conductive activated carbon or the like for adsorbing bleaching powder odor, fungi odor, trihalomethane, microorganism or the like, the electrode plate 21 being in contact with the adsorbing part 20 and for impressing voltage to the adsorbing part 20 through an outside power source and a thermistor 26 for detecting the temp. of the adsorbing part 20 has a structure formed by integrally incorporating the thermistor 26 in a terminal part 27 of the electrode plate 21. As a result, the terminal part 27 of the electrode plate 21 and thermistor 26 are mounted on one place at the same time and then the assembling is simplified and the number of the parts is decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purification and sterilization apparatus for purifying and sterilizing raw water such as tap water and groundwater and supplying it as drinking water for general household use and business use.

[0002]

2. Description of the Related Art Conventionally, as this type of water purification sterilizer, there is known an apparatus which adsorbs a odor of mustard, musty, trihalomethane, bacteria, etc. in raw water by passing water through an adsorbing section of conductive activated carbon or the like. (JP-A-9-234459). The adsorbed portion captures the adsorbed portion such as bacteria, but there is a possibility that the adsorbed portion is clogged with the adsorbed substance due to long-term use of the water purification apparatus, and the adsorbed portion may be clogged.

In order to regenerate the adsorbing section in this water purification apparatus, a voltage is applied to the adsorbing section at predetermined intervals to heat the adsorbing section, the substance to be adsorbed is desorbed from the adsorbing section, and the substance is adsorbed outside. It has a regeneration mechanism for discharging.

[0004]

By the way, when the suction part is heated, a thermistor (temperature detector) is provided for monitoring the temperature of the suction part. Here, the thermistor penetrates the device main body to detect the temperature of the suction part, and the terminal portion of the electrode plate for voltage application is also connected to the electrode plate through the device main body. The parts penetrate separately into the apparatus body, which is disadvantageous in terms of assembly cost and the number of parts.

[0005] In view of the above-mentioned conventional problems, an object of the present invention is to integrate a terminal portion of a temperature detector and an electrode plate,
It is an object of the present invention to provide a water purification apparatus capable of reducing the assembly cost and the number of parts.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a conductive activated carbon which adsorbs a smell of mold, musty, trihalomethane, bacteria and the like in raw water such as tap water. Etc., an electrode plate that contacts the adsorption unit and applies a voltage to the adsorption unit through an external power supply, and a temperature detection unit that detects the temperature of the adsorption unit. It has a structure in which the detection means is integrated.

According to the first aspect of the present invention, since the terminal portion of the electrode plate and the temperature detecting means can be simultaneously installed at one place, the assembling is simple and the number of parts is reduced.

According to a second aspect of the present invention, in the water purification apparatus of the first aspect, the temperature detecting means is detachably attached to the terminal portion. Thereby, maintenance of the temperature detector and the like can be simplified.

The temperature detector may be fixed to the terminal portion with a nut or the like as in the inventions of claims 3 to 5, or the temperature detector may be fixed as in the invention of claim 6. An anti-corrosion treatment may be applied to the warm part to improve the corrosion resistance.

[0010]

1 and 2 show a first embodiment of a water purification apparatus according to the present invention. FIG. 1 is a sectional view of the water purification apparatus, and FIG. 2 shows a main part of the present invention. It is sectional drawing.

The structure of the water purification apparatus according to the embodiment will be described with reference to FIG. This water purification apparatus has a cylindrical water tank 10 for storing raw water. The top and bottom of the water tank 10 are closed by caps 11 and 12, and the upper cap 11 has an outlet 11a communicating with a faucet (not shown).
The lower cap 12 is provided with an inlet 12a for guiding raw water into the water tank 10. A water supply pipe 13 provided with a water supply valve 13a, a pre-filter 13b, and a check valve 13c is connected to the inlet 12a. The water supply valve 13a allows water to flow through the raw water and non-water flow. The backflow from the water tank 10 is regulated by the valve 13c. A drain pipe 14 having a drain valve 14a is connected to the inlet 12a. When the drain valve 14a is opened, water in the water tank 10 is discharged. A water pipe 15 connected to a faucet or the like on the terminal side and an air inlet pipe 16 having an air inlet valve 16a are connected to the outlet 11a.

Next, the structure inside the water tank 10 is shown in FIG.
This will be described with reference to FIG. Inside the water tank 10, a cylindrical adsorption section 20 is arranged. The adsorbing portion 20 is formed by using fibrous activated carbon having conductivity, the upper end of which is held by the upper cap 11 through an annular first electrode plate 21, and the lower end of which is interposed by an annular second electrode plate 22. Holder 23
Is held by Further, an annular passage 24 communicating with the inlet 12a is formed between the outer surface of the adsorber 20 and the inner surface of the water tank 10, and the raw water flowing from the inlet 12a passes through the adsorber 20 through the passage 24. So that it flows into Further, the suction portion 20 has a conductive coil spring 25 interposed between its lower end and the lower cap 12, and urges the suction portion 20 toward the upper cap 11 by the coil spring 25. 10 is fixed. The holder 23 has the suction portion 20 and the inlet 12a.
Is formed, and the drain hole 23a has a valve 23b having a check valve function.

In the water purification apparatus constructed as described above, raw water such as tap water is supplied by a water supply valve 13a → a pre-filter 13b → a check valve 13c → an inlet 12a → a passage 24 → as shown by a solid arrow in FIG. The water flows sequentially from the suction unit 20 → the outlet port 11a → the water pipe 15 → the terminal (faucet or the like) to supply purified water.

When the water purifying operation is performed for a long period of time, the adsorption section 20 has a smell of mold, mold, trihalomethane,
Since a large amount of bacteria and the like may be adsorbed and clogging may occur, an operation of regenerating the adsorption unit 20 is performed at predetermined intervals. In this regeneration operation, the water supply valve 13a is closed,
The air introduction valve 16a and the drain valve 14a are opened to discharge the water in the water tank 10 to the outside through the drain pipe 14. Then, electricity is supplied to each of the electrode plates 21 and 22 through an external power supply (AC power supply, not shown), and the adsorbing section 20 is discharged. Heat. In this heating operation, a thermistor 26 is installed to monitor the temperature of the adsorption unit 20.

The present invention has a feature in the mounting structure of the terminal portion 27 of the first electrode plate 21 and the thermistor 26. This characteristic configuration will be described with reference to FIG.

That is, the terminal portion 27 is formed in a bottomed cylindrical shape, penetrates through the upper cap 11 and the first electrode plate 21, and has a flange portion 27 a at the tip thereof on the lower surface of the first electrode plate 21. I'm hooked. Further, a female screw is formed on the entire inner surface of the terminal portion 27, and a male screw is formed on the outer surface on the rear end side. On the other hand, the thermistor 26 has an external thread at the tip of the temperature sensing portion 26 a, and this external thread is screwed to the internal thread of the terminal 27. Thus, the thermistor 26 is detachably connected integrally to the terminal 27. Further, a lead terminal 28 of an external power supply is inserted into the outer surface on the rear end side of the terminal portion 27, and a nut 29 is screwed into a male screw of the terminal portion 27, and the lead terminal 28 is fixed to the terminal portion 27. The terminal 27 is fixed to the upper cap 11. Note that an O-ring 30 is interposed on the upper surface of the first electrode 21.

According to the present embodiment, the thermistor 26 is screwed into the terminal portion 27 to form the two integrally, and then fixed to the upper cap 11 and the first electrode plate 21, so that the mounting position is one. , Upper cap 11 and first electrode plate 21
It is not necessary to form a plurality of mounting holes in the mounting hole. Therefore, not only the structure of the water purification apparatus is simplified, but also the sealing performance is excellent.

The thermistor 26 can be removed from the terminal 27 by turning it.
Maintenance, including replacement, is facilitated.

Further, when the thermistor 26 is relaxed due to external vibration, impact, or thermal deformation, and its mounting strength is reduced, the thermistor 26 may be retightened.
The terminal portion 27 and the lead terminal 28 may be retightened by retightening the nut 29, and the fixation between the thermistor 26 and the terminal portion 27 and the connectivity between the terminal portion 27 and the lead terminal 28 can always be maintained well.

Further, when the outer shell of the thermistor 26 and the terminal portion 27 are plated with the same material, for example, a titanium-platinum material, electrolytic corrosion between different metal materials is prevented, but this is disadvantageous in cost. Therefore, when thermistor 26 is coated with Teflon or the like, electrolytic corrosion can be prevented at low cost.

FIG. 3 shows a second embodiment of the water purification apparatus according to the present invention. The same components as those in the first embodiment are denoted by the same reference numerals.

The terminal portion 31 according to the second embodiment is formed in a cylindrical shape, and includes the upper cap 11 and the first electrode plate 2.
1, and the flange 31 a at the tip thereof is hooked on the lower surface of the first electrode plate 21. In addition, a thermistor 32 having a flange 32b on the rear end side is penetrated inside the terminal portion 31, and the temperature sensing portion 32a of the thermistor 32 is connected to the suction portion 20.
And the temperature of the suction unit 20 is directly detected.

A male screw is formed on the outer surface of the terminal portion 31 on the rear end side. A flange 32b of the thermistor 32 is applied to the rear end of the terminal portion 31. The flange portion 32b is fixed to the terminal portion 31 with a cap nut 33 having a hole, and the thermistor 32 is fixed to the terminal portion 31. Further, a lead terminal 28 of an external power supply is fixed to the terminal portion 31 by a nut 29 as in the first embodiment.

According to this embodiment, since the thermistor 32 directly detects the temperature of the suction section 20, the temperature of the suction section 20 can be accurately detected. In addition, since the flange 32b of the thermistor 32 exhibits a sealing function with the terminal 31, the sealing performance is improved. Other configurations and operations are the same as those of the first embodiment.

FIG. 4 shows a third embodiment of the water purification apparatus according to the present invention, and the same components as those in the second embodiment are denoted by the same reference numerals.

In the second embodiment, the lead terminals 28 are fixed by the nuts 29, but in the third embodiment,
In addition to fixing the thermistor 32 with the cap nut 33 with a hole, the fastening force of the cap nut 33 with a hole is applied to the lead terminal 28 via a washer 34, and the lead terminal 28 is also fixed.

In this embodiment, since the washer 34 is used in place of the nut 29, the component cost is further reduced.
Other configurations and operations are the same as those of the first embodiment.

[0028]

As described above, according to the present invention,
Since the terminal portion of the electrode plate and the temperature detecting means can be installed at one place at the same time, assembly is simple and the number of parts is reduced. Further, by detachably attaching the temperature detecting means to the terminal portion, maintenance of the temperature detector can be simplified.

[Brief description of the drawings]

FIG. 1 is a sectional view of a water purification apparatus according to the present invention.

FIG. 2 is a sectional view showing a main part of the first embodiment.

FIG. 3 is a sectional view showing a main part of a second embodiment.

FIG. 4 is a sectional view showing a main part of a third embodiment.

[Explanation of symbols]

Reference numeral 20: suction part, 21, 22, electrode plate, 26, 32: thermistor, 27, 31: terminal part, 29: nut, 33: cap nut with hole.

Claims (6)

[Claims] 1. A smell of mustache, musty, etc. in raw water such as tap water.
Trihalomethane, an adsorption part such as conductive activated carbon that adsorbs bacteria, etc., an electrode plate that contacts the adsorption part and applies a voltage to the adsorption part through an external power supply, and a temperature detection unit that detects the temperature of the adsorption part. Wherein the temperature detecting means is integrated into a terminal portion of the electrode plate. 2. The water purification apparatus according to claim 1, wherein said temperature detecting means is detachably attached to said terminal portion. 3. The terminal portion penetrates through the electrode plate, and the tip thereof contacts the suction portion, and the temperature sensing portion of the temperature detector is screwed into the terminal portion toward the tip side.
2. A lead terminal connected to the external power supply is fastened to a rear end side of the terminal portion via a nut.
Or the water purification device according to claim 2. 4. The terminal portion has the temperature detector detachably penetrated therein so as to allow a temperature sensing portion of the temperature detector to contact the suction portion, and a flange on a rear end side of the temperature detector. The temperature detector is fixed with a cap nut with a hole by contacting a portion to a rear end of the terminal portion, and a lead terminal connected to the external power supply is fastened to the terminal portion with another nut. The water purification device according to claim 1 or 2. 5. The terminal portion has the temperature sensor detachably penetrated therein so as to allow a temperature sensing portion of the temperature sensor to contact the suction portion, and a flange at a rear end of the temperature sensor. 3. The terminal according to claim 1 or 2, wherein a lead terminal connected to the rear end of the terminal portion and a lead terminal connected to the flange portion and the external power supply are fastened to the terminal portion with a cap nut with a hole. Water purification equipment. 6. The water purification apparatus according to claim 4, wherein at least a temperature-sensitive portion of the temperature detector is subjected to an electrolytic corrosion prevention treatment.