JP2000024648A - Regeneration type water purifying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a regeneration type water purifying device capable of regularly generating purified water by selectively switching the regeneration treatment of each purified water sterilization unit and unnecessary for large power source as that for an electric heating means. SOLUTION: In the regeneration type water purifying device provided with plural numbers of water purification sterilization units A, B for generating the purified water by passing water through an adsorption part 1 such as an electroconductive activated carbon and for releasing an organic material stuck to the adsorption part 1, sterilizing and the like by applying AC voltage to the adsorption part 1 through electrodes 2a, 2b to heat, a switching control means for switching and controlling the supply of current to each electrode 2a, 2b of the water purification sterilization unit A, B between A and B is provided. As a result, the water purifying treatment is regularly carried out because the water purification sterilization unit B (or A) executes the purifying treatment when the adsorption part 1 is regenerated by supplying current to the electrodes 2a, 2b of another water purification sterilization unit A (or B).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a regenerative water purification apparatus for purifying and sterilizing raw water such as tap water and groundwater to feed purified water.

[0002]

2. Description of the Related Art Conventionally, as this kind of regenerative water purifier,
The one shown in FIG. 14 is known.

In this regenerative water purification apparatus, a plurality of water purification units A and B are arranged in parallel, and tap water is introduced into each of the water purification units A and B through a water supply valve 2 and a check valve CV1. In the water purification units A and B, an adsorption unit 1 formed of conductive activated carbon or the like is disposed inside, and the adsorption unit 1 captures a mold odor, a odor of a tap water, trihalomethane, microorganisms and the like. , And water is supplied to the faucet C.

When the adsorption action of the adsorbing section 1 is performed for a long period of time, the adsorbing section 1 needs to be regenerated because clogging occurs in the adsorbing section 1 and microorganisms proliferate.

In order to carry out this regeneration operation, a pair of electrodes 2a and 2b are arranged above and below the adsorbing section 1, and check valves CV2 and CV2, which are connected to both the water purification units A and B, respectively.
It has a suction device (aspirator) 3 and a drain valve SV2.

That is, when the adsorption section 1 is regenerated,
The water supply valve SV1 is closed and the drain valve SV2 is opened for a predetermined time (a time during which water in each of the water purification units A and B can be discharged). As a result, the tap water flows to the aspirator 3, and the water in each of the water purification units A and B is checked by the check valve CV2 → the aspirator 3 → by the suction force and the own weight accompanying the flow of the tap water.
It flows sequentially with the drain valve SV2 and is discharged outside. When the drainage process is completed, an AC voltage is applied to each of the electrodes 2a and 2b to generate Joule heat to heat the adsorbing section 1, thereby disinfecting microorganisms and peeling off organic matter and the like. When the desorption sterilization step is completed, the drain valve S
V2 is opened for a predetermined time. At this time, since the tap water is flowing through the aspirator 3, the heated sterilizing air in the water purification units A and B is sucked toward the aspirator 3 by the suction force accompanying the flow of the tap water and discharged to the outside.

[0007] By such an evacuation process, the adsorbing section 1 is regenerated to prepare for another water purification process.

[0008]

By the way, in the above-mentioned conventional regenerative water purifier, the adsorbing section 1 of each of the water purifying and sterilizing units A and B is used.
Are reproduced at the same time.
There is a problem that water cannot be obtained even if the water is opened. Further, in order to energize the electrodes 2a and 2b of the plurality of water purification units A and B simultaneously, there is a problem that a large-sized transformer or a plurality of transformers corresponding to this is required.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, it is an object of the present invention to continuously generate purified water by selectively switching the regeneration treatment of each water purification unit, and to provide a regeneration that does not require a large power source for the electric heating means. It is to provide a type water purification device.

[0010]

In order to solve the above-mentioned problems, the present invention has a plurality of water purifying units for producing purified water by passing water through an adsorbing section of conductive activated carbon or the like. In a regenerative water purifier that heats the adsorption unit with electric heating means and removes organic substances attached to the adsorption unit and sterilizes bacteria, etc., the power supply to the electric heating means of the water purification unit is sequentially switched between each water purification unit. It has a structure having switching control means for controlling.

According to the present invention, when the electric heating means of one of the water purification units is energized to regenerate the adsorption unit, the other water purification unit can perform the water purification process. It becomes possible.

According to a second aspect of the present invention, there is provided the regenerative water purifier according to the first aspect, further comprising a suction device connected to each of the water purification units and for suctioning organic substances and the like detached from the adsorption section. That is, the water in the water purification unit to be regenerated is discharged at the time of the regenerating process of the adsorption section, or the air in the unit is discharged after heating, and a suction device is used as the discharging means. .

According to a third aspect of the present invention, in the regenerative water purifier according to the second aspect, a suction device connected to each of the water purification units is used in common. According to this invention, even when the number of each water purification unit is large, only one suction device is required.

According to a fourth aspect of the present invention, the switching control means has a relay for selectively switching the energization of the electric heating means between the respective water purification units, and switches the water purification unit for performing the regenerating process with this relay. Further, by inserting the other relay also on the common side as in the invention of claim 5, even when one of the relay sides is short-circuited, the power supply to each electric heating means can be reliably cut off.

According to a sixth aspect of the present invention, the other relay is connected in parallel to each of the one relays, and the other relay is energized / de-energized in synchronization with an excitation / de-excitation signal to one of the relays. It has a structure that incorporates a diode to excite it.

According to the present invention, since the other relay is also excited / de-energized in synchronization with the excitation / de-excitation of one of the relays, there is no need to output an excitation / de-excitation signal to the other relay. The output circuit for each relay is simplified.

[0017]

1 to 8 show a first embodiment of a regenerative water purifier according to the present invention. FIG. 1 is a water circuit diagram of the regenerative water purifier, and FIG. 2 is a regenerative water purifier. 3 is a control flowchart of the regenerative water purifier, FIG. 4 is a control flowchart of an initialization process, FIG. 5 is a control flowchart of an exhaust A process, FIG. 6 is a flowchart of an exhaust B process, FIG. 8 is a flowchart of the temperature A control, and FIG. 8 is a flowchart of the temperature B control.

Referring to FIG. 1, the water circuit of the regenerative water purifier will be described. In this regenerative water purification apparatus, two water purification units A and B arranged in parallel and one faucet C are connected by piping. Each of the water purification units A and B has a flow rate sensor FS and a water supply valve (solenoid valve configuration) SV on its inlet side.
1, SV2, and these devices FS, SV1, SV2
Raw water (tap water or groundwater, etc.) flows in through the port. On the other hand, the raw water that has flowed into each of the water purification units A and B is purified therein, and is supplied to the faucet C through the flow path switching valves SV3 and SV4 and the check valves CV1 and CV2. It has become.

Here, each of the water purification units A and B has an adsorption part 1 formed of conductive activated carbon or the like therein.
Microbes and the like are captured, and purified water is generated (purified water treatment).
Further, a pair of electrodes 2a and 2b are arranged above and below the adsorbing section 1. When an AC voltage is applied to the electrodes 2a and 2b, Joule heat is generated in the adsorbing section 1 and organic substances and the like attached to the adsorbing section 1. , And microorganisms and the like are sterilized (regeneration treatment). Further, a temperature sensor TS is installed in each of the water purification units A and B, and the temperature sensor TS detects the temperature of the adsorption section 1.

When the adsorbing section 1 is regenerated, the water in each of the clean water sterilizing units A and B is drained. As the drain device, suction devices (aspirators) 3a and 3b corresponding to the clean water sterilizing units A and B are used. Having. This aspirator 3a,
3b is connected to each of the water purification units A and B through the check valves CV3 and CV4, respectively.
The inside water flows into each aspirator 3a, 3b. Each aspirator 3a, 3b is provided with a check valve CV.
5, CV6, the raw water flows in, and the water in each of the water purification units A, B is sucked toward the aspirators 3a, 3b by the suction force associated with the raw water flow. Further, on the downstream side of each of the aspirators 3a and 3b, there are drain valves MV1 and MV2, respectively. The drain valves MV1 and MV2 control the discharge of water and the like in each of the water purification units A and B. It is supposed to. In addition, on the purified water supply side of each of the purified water sterilization units A and B, check valves CV7 and CV8 for introducing air are installed.

Next, a drive control circuit of the regenerative water purifier according to the present embodiment will be described with reference to the block diagram of FIG.

The regenerative water purifier according to the present embodiment is provided with a control device 4 such as a microcomputer and is automated. The control device 4 has a central processing unit (CPU) 41 and a memory 42 storing a control program.
The control device 4 has I / O ports 43 and 44. The I / O port 43 is connected to the control device 4 and the timer TM,
Signals are input and output between the flow sensor FS and the temperature sensor TS. On the other hand, the I / O port 44 inputs and outputs signals between the control device 4 and the water supply valves SV1 and SV2, the flow path switching valves SV3 and SV4, the drain valves MV1 and MV2, and the relays RL1 and RL2. The relays RL1 and RL2 are connected in parallel to the electrodes 2a and 2b of the water purification units A and B, respectively, and are connected in series to the transformer TR of the AC power supply for the electrodes through the electrodes 2a and 2b.

Based on these drive control circuits, each valve SV
1 to SV4, MV1, MV2 and relays RL1, RL2
Is controlled as shown in the flowcharts of FIGS.

That is, when the regenerative water purifier is started, an initialization operation is first performed as shown in FIG. 3 (S
1). In this initialization operation, as shown in FIG. 4, the integrated flow rate output from the flow rate sensor FS is set to “0”, each of the valves SV1 to SV4 is opened, and the drain valves MV1 and MV2 are closed.
Further, the relays RL1 and RL2 are opened (SA1 to SA1).
5). As a result, when the faucet C is opened, the tap water flows into each of the water purification units A and B to supply purified water (water purification treatment).

In this water purification treatment, the flow rate of tap water flowing through each of the water purification units A and B is sequentially counted to monitor whether or not the total flow has reached the set flow rate M (S2, S).
3). When the total flow rate reaches the set flow rate M, the water purification process ends, and the regeneration process of the water purification unit A starts.

In the regeneration treatment of the water purification unit A,
First, the valves SV1 and SV3 are closed to stop the flow of water to the water purification unit A, and the drain valve MV1 is turned on for a predetermined time T1.
(S), and the water in the water purification unit A is discharged through the aspirator 3a (S4, S5). At this time, since tap water is flowing directly into the aspirator 3a, suction power accompanying the flowing water is applied to the water purification unit 9 and water in the water purification unit A is reliably discharged.

When the drainage of the water purification unit A is completed, the relay RL1 is closed, and an AC voltage is applied to the electrodes 2a and 2b of the water purification unit A (S6).
By this voltage application, Joule heat is generated in the adsorption unit 1,
The temperature of the suction section 1 increases. Here, when the temperature of the adsorption section 1 has reached the set temperature K1, the process proceeds to the exhaust A step (S8).

This exhaust A step will be described with reference to FIG. In this exhaust A process, the drain valve MV1 is opened again (SB
1) The relay RL1 is controlled so that the temperature of the suction unit 1 falls within a predetermined temperature range (SB2). That is, as shown in FIG. 7, when the suction unit 1 reaches the upper limit temperature K2, the relay RL
When the temperature reaches the lower limit temperature K3, RL1 is closed, and the temperature of the adsorption unit 1 is controlled to a predetermined range (SC
1 to SC4). Such temperature control is performed until the set exhaust time T2 as shown in FIG. 5 (SB3, SB
4).

As described above, since the insides of the water purification units A and B are heated, organic substances and the like adhering to and deposited on the adsorption unit 1 are desorbed, and microorganisms and the like propagated in the adsorption unit 1 are sterilized. Then, since the exhaust valve MV1 is opened and the tap water is flowing through the aspirator 3a, a suction force accompanying the flowing water is applied to the inside of the water purification unit A, and the separated material is sucked by the aspirator 3a. It is discharged outside.

When such an evacuation operation has been completed, the drain valve MV1 is closed and the adsorption section 1 is monitored so as to be in a predetermined temperature range (SB5, SB6). This temperature control is the same as that in FIG. 7 described above, and this temperature control is performed until the set heating time (SB7, SB8).

The exhaust A process is repeated as one set of the exhaust and the heating. When the number of the exhaust A process reaches the set number, the valves SV1 and SV3 are opened (S9 to S1).
1). Thereby, the water purification unit A shifts to the water purification mode.

When the regeneration process of the water purification unit A is completed, the process proceeds to the regeneration process of the water purification unit B. The regeneration process of the water purification unit B is controlled in the same manner as the water purification unit A described above.

That is, the valve SV2 on the water purification unit B
SV4 is closed, and the drain valve MV2 is opened and drained for a predetermined time T1 (S12, S13). Then, the relay RL2 is closed and an AC voltage is applied to each of the electrodes 2a and 2b.
The temperature of the adsorption unit 1 is controlled to reach the set temperature k1, and the exhaust B step is performed (S14 to S16). In this exhaust B step, as shown in FIGS. 6 and 8, exhaust and heating are repeated to remove organic substances and the like from the adsorption section 1 of the water purification unit B and sterilize microorganisms and the like (SD1 to SD8, SE1 to S1).
E4).

As described above, in the regenerative water purifier according to the present embodiment, when the adsorber 1 is regenerated, the regenerating process is first performed for one of the water purification units A, and then the reprocessing unit B is regenerated. Playback processing is performed. Therefore, since both regeneration processes are not performed at the same time, when the faucet C is opened, one of the water purification units A or B can always supply purified water.

FIGS. 9 and 10 show a second embodiment of the regenerative water purifier according to the present invention. In the second embodiment, the number of the aspirator 3c and the drain valve MV3 is one,
The feature is that these are also used for each of the water purification units A and B.

That is, drainage switching valves SV5 and SV6 are arranged in the drainage pipes of the water purification units A and B, respectively, and are connected to the aspirator 3c via a check valve CV9. Further, an on-off valve SV7 for regulating and canceling the inflow of tap water is arranged on a pipe on the tap water inflow side of the aspirator 3c, and a drain valve MV3 is arranged on a drain side pipe of the aspirator 3c.

According to the present embodiment, when performing the regeneration treatment of one of the water purification units A, the drainage switching valve SV5 is opened to drain and exhaust the water purification unit A.
When performing the regeneration treatment of the water purification unit B, the drainage switching valve SV6 is opened to drain and exhaust the water purification unit B. Other configurations and operations are the same as those of the first embodiment.

FIGS. 11 to 13 show a third embodiment of the regenerative water purifier according to the present invention. In this embodiment, the relay RL3 is inserted on the common side of each of the relays RL1 and RL2.

That is, as described in the above embodiments,
Each of the relays RL1 and RL2 is switched to selectively perform the regeneration processing of each of the water purification units A and B. However, since the transformer TR is connected to the electrode 2a exposed to water, an electric shock or the like may occur during the water purification processing. Danger. Therefore, in this embodiment, the relay RL3 is inserted on the common side, and when each of the water purification units A and B is not being regenerated, the power supply to each of the electrodes 2a and 2b is surely cut off.

Here, each relay RL1, RL2, RL3
As shown in FIG. 12, the output ports 44a, 44b, 44b of the control device 4 are connected to the coils RL1a, RL2a, RL3a.
The data is output individually from the driver 44c through the driver DR.

Further, as shown in FIG.
1 and RL2, and the coil RL3a of the common-side relay RL3 are connected in parallel, and diodes D1 and D2 are inserted into the coils RL1a and RL2a.
When an output signal is input to L1a and RL2a, the coil RL3 may be energized. According to this configuration, only two output ports 44d and 44e are required, and the control device is simplified.

In each of the above-described embodiments, the electric heating means of the adsorption unit 1 is of a voltage application type in which an alternating voltage is applied to each of the electrodes 2a and 2b. Any electric heating means may be used. For example, an electric heater (not shown) may be wound around the water purification units A and B, and the adsorber 1 may be heated by energizing the electric heater.

[0043]

As described above, according to the present invention,
When electricity is supplied to the electric heating means of one of the water purification units to regenerate the adsorption unit, the other water purification unit can perform water purification, so that water purification can be performed at all times. Does not require a large power source for the means. According to the fifth aspect of the invention, even when the coil side of one of the relay circuits is short-circuited, the power supply to the electric heating means can be reliably cut off.

[Brief description of the drawings]

FIG. 1 is a water circuit diagram of a regenerative water purification device according to a first embodiment.

FIG. 2 is a block diagram showing a control circuit of the regenerative water purification device according to the first embodiment.

FIG. 3 is a control flowchart of the regenerative water purification device according to the first embodiment.

FIG. 4 is a control flowchart of an initialization process according to the first embodiment;

FIG. 5 is a control flowchart of an exhaust A process according to the first embodiment.

FIG. 6 is a flowchart of an exhaust B process according to the first embodiment.

FIG. 7 is a flowchart of temperature A control according to the first embodiment.

FIG. 8 is a flowchart of temperature B control according to the first embodiment.

FIG. 9 is a water circuit diagram of a regenerative water purification device according to a second embodiment.

FIG. 10 is a block diagram showing a control circuit of the regenerative water purification device according to the second embodiment.

FIG. 11 is a circuit diagram showing a main part of a regenerative water purification device according to a third embodiment.

FIG. 12 is a block diagram showing an example of a relay circuit of the regenerative water purification device according to the third embodiment.

FIG. 13 is a block diagram showing another example of the relay circuit of the regenerative water purification device according to the third embodiment.

FIG. 14 is a water circuit diagram of a conventional regenerative water purification device.

[Explanation of symbols]

A, B ... water purification unit, 1 ... adsorption part, 2a, 2b ...
Electrodes, 3a, 3b, 3c: aspirator, 4: control device.

Claims (6)

[Claims] 1. A plurality of water purification units for producing purified water by passing water through an adsorbing portion of conductive activated carbon or the like, wherein the adsorbing portion is heated by electric heating means to remove organic substances adhered to the adsorbing portion and to remove bacteria. A regenerative water purifier for disinfecting water and the like, comprising a switching control means for sequentially switching and controlling power supply to the electric heating means of the water purification / sterilization unit between the respective water purification / sterilization units. 2. The regenerative water purifier according to claim 1, further comprising a suction unit connected to each of said water purification units and for sucking organic substances and the like desorbed from said adsorption unit. 3. The regenerative water purification device according to claim 2, wherein a suction device connected to each of the water purification units is shared. 4. The switching control means according to claim 1, further comprising a relay for selectively switching energization of said electric heating means between said water purification units. Regeneration type water purification equipment. 5. The regenerative water purifier according to claim 4, wherein another relay is inserted on the common side of each of said relays. 6. The other relay is connected in parallel to each of the one relays, and the other relay is energized / deenergized in synchronization with an excitation / deenergization signal to the one relay. The regenerative water purifier according to claim 5, wherein a diode is incorporated so as to perform the operation.