JPH06261658A - Water-cleaning apparatus - Google Patents

Abstract

PURPOSE:To periodically inspect the action of a flow channel shutoff means to prevent the functional disorder of a water-cleaning apparatus caused by the malfunction of the flow channel shutoff means, e.g. the malfunction of a water-leakage safety device for preventing the flow-out of water from a water tank. CONSTITUTION:A flow channel change-over means 3, a plurality of flow channel shutoff means 4, 5, a means 6 for feeding water under pressure and a pressure detection means 9 placed at the downstream side of the shut-off valve are attached to a water channel for circulating water of a water tank 1. The objective water-cleaning apparatus is composed of the circulation channel having the above structure and a controlling means 12 to control the operation of the flow channel change over means, the flow channel shutoff means and the water-feeding means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifying device for purifying water in a water purifying aquarium or water in a fish breeding aquarium.

[0002]

2. Description of the Related Art As shown in FIG. 9, a conventional water purifier of this type has a single on-off valve 3 at an outlet 33 of a bottom 32 of a water tank.
The flow path between the water tank to which 4 is attached and the water purifying device 35 is blocked. The on-off valve 34 is opened and put in a water-passing state when the water purification device 35 is in operation. Further, the opening / closing valve 34 is controlled by a signal from a water leakage sensor 37 attached to a receiving container 36 of the water purifying device 35, and a control means 38.
The circulation pump 39 is also stopped and the water in the water tank is prevented from leaking to the outside.

[0003]

Generally, in the purification of contaminated water such as the above-mentioned ornamental fish, a manual or automatic on-off valve is used so that the water tank and the water purification device can be separated from each other. In this case, the water in the aquarium has a problem that the flow path opening / closing means malfunctions due to poor closing of the flow path opening / closing means due to solid matter such as carcasses of fish or leftover food, or sticking of moving parts due to adhesion of microorganisms. Was.

The present invention has been made to solve the above-mentioned problems, and a spare flow path opening / closing means is provided in the circulation flow path, and the operation of the flow path opening / closing means in use is regularly inspected to find a malfunction. In this case, immediately switch to the auxiliary flow path opening / closing means side flow path to prevent the on-off valve from sticking due to the growth of microorganisms that purify water and the precipitation of chemical substances dissolved in circulating water. An object of the present invention is to prevent a malfunction of a water leakage safety device that prevents the water in a water tank from flowing out when a malfunction of the water purifier due to a malfunction of the opening / closing means, for example, a water leak occurs.

The water purifying apparatus is configured to quantitatively grasp the results of the periodic inspection of the flow passage opening / closing means, to grasp in advance that the flow passage opening / closing means will malfunction, and to replace the flow passage opening / closing means before the occurrence of a failure. It is intended to improve the reliability of the function failure of, for example, the function of the above-mentioned water leakage safety device.

[0006]

In order to achieve the above object, the present invention provides a flow passage switching means for selectively switching two flow passages provided in parallel in a flow passage for circulating water in a water tank. A plurality of flow passage opening / closing means provided in each of the flow passages, a water pressure feeding means, and a circulation flow passage having a pressure detecting means provided on the downstream side of the opening / closing valve; and the flow passage switching means,
Flow path opening and closing means, comprising a control means for controlling the drive of the water pressure feeding means, the control means, the flow path switching means setting the flow path, and a control signal generating section for periodically issuing a flow path opening and closing means cutoff signal, The pressure sensor includes a determination unit that determines whether the signal value from the pressure detection unit is a predetermined value or less, and a drive signal generation unit that outputs a drive signal to the outside based on the determination result.

Further, flow passage switching means for selectively switching two flow passages provided in parallel to the flow passages for circulating water in the water tank, and a plurality of flow passages provided in the flow passages provided in parallel, respectively. A circulation flow path comprising an opening / closing means, a water pressure feeding means, a microorganism culture module, and an air supply means for supplying gas into the circulating water by suction of a high-speed jet to the microorganism culture module, and an air inlet of the air supply means. The pressure detecting means and the flow path switching means, the flow path opening / closing means, and the control means for controlling the drive of the water pressure feeding means are provided, and the control means sets the flow path of the flow path switching means and periodically executes the flow path. It is composed of a control signal generating section for outputting an opening / closing means cutoff signal, a judging section for judging whether the signal value from the pressure detecting means is a predetermined value or less, and a driving signal generating section for outputting a driving signal to the outside based on the judgment result.

Further, a plurality of flow passage opening / closing means connected in series, which are sequentially provided in the flow passage for circulating water in the water tank, a water pressure feeding means, and a circulation flow passage in which a pressure detecting means is inserted downstream of the opening / closing valve. And a control means for controlling the driving of the plurality of flow passage opening / closing means and the water pressure feeding means, and the control means sets the flow passage of the flow passage switching means and periodically outputs the flow passage opening / closing means shutoff signal. The control signal generator includes a control unit, a determination unit that determines whether the signal value from the pressure detection unit is a predetermined value or less, and a drive signal generation unit that outputs a drive signal to the outside based on the determination result.

[0009]

According to the present invention, according to the above-mentioned structure, the flow path opening / closing means on the side where the flow path is set by the flow path switching means is opened in the steady operation based on the operation signal from the control means, and the water in the aquarium is opened / closed by the flow path opening / closing means. It is circulated to and purified by the pressure detector, the water pressure feeding means, the water purification tank, and the water tank. At this time, the pressure detection means outputs an output signal of a pressure obtained by substantially subtracting the pressure loss of the flow path opening / closing means from the water level of the water tank.

Next, in the inspection cycle, a signal for turning off the flow path opening / closing means is output from the control signal generating portion of the control means to close the flow path opening / closing means. At this time, the output signal output from the pressure detecting means shows a high negative pressure signal value when the closing performance of the flow path opening / closing means is sufficient, and a signal indicating that the negative pressure is weakened when there is a leak in the flow path opening / closing means. Indicates a value. That is, the performance of the flow path opening / closing means is judged by the signal value from the pressure detecting means when the flow path opening / closing means is closed.

When it is determined that the performance of the flow path opening / closing means has deteriorated, the flow path switching means switches the flow path to another normal flow path opening / closing means side to maintain normal operation.

In the inspection cycle, the performance of the flow path opening / closing means is judged by closing the flow path opening / closing means a plurality of times during one inspection and observing the output signal values from the pressure detecting means at that time. Will be more accurate.

The above-mentioned constitution provided with the microbial culture module is
First, in normal operation, the flow path opening / closing means is opened based on the operation signal from the control means, and when water circulation is performed by the water pressure feeding means, organic matter such as fish excrement and uneaten food and organic matter are decomposed. The aquarium water containing the generated ammonia and nitrate is sent to the microorganism culture module while being mixed with the air sucked by the air supply means for sucking the air into the circulating water by the suction action of the high-speed jet. Therefore, the ammonia in the aquarium is efficiently oxidatively decomposed into nitrate in an oxygen-rich atmosphere by the artificially cultured aerobic microorganisms attached to the surface of the mineral matter in the module in a film form. That is, the water is purified.

The next inspection cycle has two inspections, that is, inspection of the flow path opening / closing means and inspection of the air supply means. First, in the flow path opening / closing means inspection cycle, the flow path opening / closing means is closed by a signal from the control signal generating section of the control means to turn off the flow path opening / closing means. At this time, if the output signal output from the pressure detecting means has a sufficient closing performance of the flow path opening / closing means, the pressure sending pressure from the water pressure sending means shows a signal value of zero, and conversely if there is a leak in the flow path opening / closing means. In the figure, a signal value indicating an increase in pressure-feeding pressure from the water pressure-feeding means is shown. That is, the performance of the flow path opening / closing means is judged by the signal value from the pressure detecting means when the flow path opening / closing means is closed.

Next, in the inspection cycle of the air supply means, the flow path opening / closing means is opened by the signal of the flow path opening / closing means ON from the control signal generating section of the control means, and the normal water circulation operation state is established. At this time, the output signal output from the pressure detection means is normal when the air inlet pressure of the air supply means is a signal value lower than the atmospheric pressure, and conversely, when it is equal to or higher than the atmospheric pressure, the air is not sucked in abnormally. It is judged that there is.

A plurality of flow passage opening / closing means connected in series, and a flow passage opening / closing means inspection cycle having a structure in which a pressure detecting means is connected to the downstream side of the flow passage opening / closing means are used for the first cycle from the control signal generating section of the control means. The flow path opening / closing means is closed by a signal of turning off the flow path opening / closing means of the step. Similarly to the above, the performance of the first-stage flow path opening / closing means is determined based on the output signal value output from the pressure detecting means. When the inspection of the first-stage flow passage opening / closing means is completed, the control signal generator opens the first-stage flow passage opening / closing means, turns off the next-stage flow passage opening / closing means, and performs the same inspection as the first stage. .

[0017]

Embodiments of the present invention will be described below with reference to FIGS.

In FIG. 1, reference numeral 1 is a water tank, and 2 is a water purification unit provided in a circulation passage for forcibly circulating water in the water tank 1. The water circulation circuit of the water purification unit 2 includes the flow path switching means 3,
The first flow path opening / closing means 4, the second flow path opening / closing means 5, the circulation pump 6 which is a water pressure feeding means, and the air supply means 7 for introducing the external air into the running water by the ejector action, which are arranged in parallel. Microorganism culture module 8 provided downstream of the air supply means 7 and in which a microorganism fixed bed made of a mineral substance is enclosed
It consists of and. In the circulation circuit, pressure detection means 9 is inserted on the downstream side of the confluence of the flow path opening / closing means 4, 5. A water tray 10 is provided at the bottom of the water purification unit 2 and a water leak sensor 11 is installed inside. Reference numeral 12 is a control means, which is connected to the flow path switching means 3, the flow path opening / closing means 4, 5, the circulation pump 6, the pressure detecting means 9 and the water leakage sensor 11. Reference numeral 13 is an air inflow passage of the air supply means 7, and 14 is an air separator for separating fine bubbles sucked by the air supply means 7 and flowing into the microorganism culture module 8.

FIG. 2 is a block diagram showing the structure of the control means 12. The determination section 15 receives signals from the pressure detection means 9 and the water leak sensor 11, and the control signal generation section 16, and outputs the output signal. It is sent to the drive signal generator 17. The drive signal generator 17 receives the signals from the determination unit 15 and the control signal generator 16 to change the flow path switching means 3, the first and second flow path opening / closing means 4, 5, the circulation pump 6, and the external notification means 18. Drive.

FIG. 3 is a flow chart for inspecting the flow path opening / closing means. FIG. 4 shows a relationship between the pressure values obtained by the pressure detecting means 9 and the first and second flow path opening / closing means 4, 5 at the time of inspection. 4A shows the relationship between the voltage V applied to the first and second flow path opening / closing means 4, 5 and the time T, and FIG. 4B shows the pressure detecting means 9
3 shows the relationship between the suction pressure P output from the engine and the time T.

In the above structure, in the case of steady operation, the flow path switching means 3 sets the flow path to the side of the first flow path opening / closing means 4 from the control signal generating section 16 of the control means 12 to open / close the first flow path. A signal that the means 4 and the circulation pump 6 are ON and the second flow path opening / closing means 5 is OFF is output, and the drive signal generator 17
The flow path is on the side of the first flow path opening / closing means 4 via the, the first flow path opening / closing means 4 is opened, and the circulation pump 6 is operated. As a result, the aquarium water is circulated to and purified by the flow passage switching means 3, the first flow passage opening / closing means 4, the pressure introducing portion of the pressure detecting means 9, the circulation pump 6 which is a water pressure feeding means, the microorganism culture module 8, and the water tank 1. To be done. At this time, the pressure detection means 9 outputs a pressure signal obtained by subtracting the pressure loss of the first flow path opening / closing means 4 from the water tank water level pressure. That is, the suction pressure becomes Pn in FIG.

When water leaks from the connection portion of the purification unit 2 during the water circulation purification operation, a signal from the water leak sensor 11 is input to the determination unit 15, and the drive signal generation unit 17 determines the result of the water leakage occurrence. Is stopped, the voltage supply sent from there is stopped, the first flow path opening / closing means 4 is closed, and the circulation pump 6 is stopped. As a result, aquarium 1
The circulation path between the cleaning unit 2 and the cleaning unit 2 is blocked, and water in the water tank 1 is prevented from leaking to the outside.

Next, the inspection cycle becomes the sequence shown in FIG. 3, and the control signal generator 16 of the control means 12 is used.
The first flow path opening / closing means 4 outputs an OFF signal, and the first flow path opening / closing means 4 is closed while the circulation pump 6 is in the operating state. As a result, the circulation of the aquarium water is stopped. At this time, the output signal output from the pressure detection unit 9 is input to the determination unit 15. The signal input to the determination unit 15 is shown in FIG.
If the signal value of the suction pressure is less than or equal to the suction pressure Pt of
It is determined that the closing performance of the flow path opening / closing means 4 is sufficient.
In the YES flow of FIG. 3, the first flow path opening / closing means 4 is turned off.
N, the operation is returned to the normal operation and the operation is continued.

The signal input to the judging section 15 is shown in FIG.
The signal value of the suction pressure higher than the suction pressure Pb in (b) indicates that the water in the water tank 1 has flowed into the suction port of the circulation pump 6 due to the leakage of the first flow path opening / closing means 4, and the closing performance. Is determined to be insufficient. If the performance is insufficient, the flow of ON in FIG.
Then, the flow path switching means 3 switches the flow path to the second flow path opening / closing means 5 side, the first flow path opening / closing means 4 is turned off, the second flow path opening / closing means 5 is turned on, and the operation returns to the steady operation. After that, the above inspection cycle is performed for the second flow path opening / closing means 5. Also,
Upon receiving an external notification that the closing performance of the first flow path opening / closing means 4 is poor, the first flow path opening / closing means 4 is repaired or replaced.

The reliability of the passage opening / closing means can be further improved by performing the inspection cycle periodically, for example, once a day. The determination result is notified to the outside by the notification means 18.

As in the above-mentioned embodiment, the inspection of the flow path opening / closing means can know in advance that the flow path opening / closing means has malfunctioned, and can also perform the self-cleaning action of the flow path opening / closing means.

An embodiment in which the flow path opening / closing means 3 and the air supply means 7 can be inspected will be described with reference to FIGS. 5, 6 and 7. In FIG. 5, 3 is a first flow path switching means capable of selecting a flow path on the side of the first flow path opening / closing means 4 and a flow path on the side of the second flow path opening / closing means 5 as in the above embodiment, and 19 is a flow path opening / closing means 4 5 is a pressure extracting portion provided on the downstream side of the confluence point of 5. Reference numeral 20 is a pressure detecting means having a pressure input port 21 and an atmosphere communication port 22.
In 23, the first input path 24 has the pressure take-out portion 19, and the second input path 2
5 is a pressure path switching means connected to the air inflow path 13 and an output path 26 connected to the pressure input port 21 of the pressure detection means 20. Reference numeral 27 is an air valve that is inserted into the atmosphere communication passage 28 of the pressure detection means 20 and shuts off the air inflow passage 13 from the atmosphere. The same components as those in FIGS. 1 and 2 use the same numbers.

FIG. 6 is a block diagram showing the construction of the control means 12. Signals are input to the determination section 15 from the pressure detection means 9 and the water leak sensor 11 and the control signal generation section 16, and the output signal is It is sent to the drive signal generator 17. The drive signal generating section 17 receives the signals from the determining section 15 and the control signal generating section 16, and determines the flow path switching means 3, the first and second flow path opening / closing means 4, 5, the circulation pump 6, the pressure path switching means 23, and the outside. The notifying means 18 is driven.

FIG. 7 shows the air supply means 4 in the above embodiment.
In the characteristic diagram of FIG. 5, the intake air amount Q-the intake pressure P characteristic with the circulation flow rate Q as a parameter, and the flow path resistance characteristic L of the air inflow path 19
And indicates.

In the above structure, in the case of steady operation, the flow path switching means 3 from the control signal generator 16 of the control means 12 directs the flow path to the first flow path opening / closing means 4 side, and the pressure path switching means 23 controls the pressure. The detection means 20 and the air inflow path 13 are set to communicate with each other, and a signal is output that the first flow path opening / closing means 4, the circulation pump 6 and the air valve 27 are ON, and the second flow path opening / closing means 5 is OFF. , The first flow path through the drive signal generator 17
On the side of the flow path opening / closing means 4, the first flow path opening / closing means 4 is opened and the circulation pump 4 is operated. As a result, the aquarium water is flow channel switching means 3, first flow channel opening / closing means 4, pressure detection means 2.
It is circulated to the pressure extraction part 19 to 0, the circulation pump 6, the microorganism culture module 8, and the water tank 1. When water circulates, the negative pressure (ejector action) generated by the high-speed jet generated by the air supply means 7 causes the air to communicate with the atmosphere 28 and the pressure detection means 20.
Through the air inflow passage 13 to be mixed into the circulating water. The air mixed in the circulating water enters the microorganism culture module 8 and supplies oxygen to the microorganisms to activate the microorganisms in the module 8. Circulating water is purified by the activated microorganisms. At this time, the air supply means 7 is supplied from the pressure detection means 20.
An output signal corresponding to the operating point (P1, P2 in FIG. 7) is output.

In the next inspection cycle, the flow path opening / closing means 4, 5
And the air supply means 7 are inspected in two steps.

The inspection of the flow path opening / closing means 4 and 5 in the first step is performed by turning off the air valve 27 from the control signal generating section 16 of the control means 12, and then the pressure path switching means 23 is operated by the pressure detecting means 20 and the pressure extracting section. 19, the circulation pump 6 is turned on and the flow passage opening / closing means 4 is turned off, and the flow passage opening / closing means 4 and the air valve 27 are closed while the circulation pump 6 is in the operating state. . As a result, the circulation of the aquarium water is stopped. At this time, the output signal output from the pressure detection unit 20 is input to the determination unit 15. In the determination unit 15, as in the above-described embodiment, the input signal is P in FIG.
If the signal value of the high suction pressure is t, it is determined that the closing performance of the flow path opening / closing means 4 is sufficient, and Pb of FIG.
If it is a signal value indicating that the suction pressure has decreased, it is determined that the closing performance is insufficient. The determination result of the determination unit 15 is sent to the drive signal generation unit 17, and if the closing performance is sufficient, the normal operation is restored. On the contrary, if the closing performance is insufficient,
As in the above-described embodiment, the notification means 18 is turned on, the flow path switching means 3 switches the flow path to the flow path opening / closing means 5, and the pressure path switching means 23 connects the pressure detection means 20 and the pressure extraction valve 19. The first flow path opening / closing means 4 is turned off, the second flow path opening / closing means 5 is turned on, and the operation returns to the normal operation. After that, the above inspection cycle is performed for the second flow path opening / closing means 5. Further, upon receiving an external notification that the closing performance of the first flow path opening / closing means 4 is poor, the first flow path opening / closing means 4 is repaired or replaced.

The inspection of the air supply means 7 in the second step is as follows.
Assuming that the closing performance of the flow path opening / closing means 4 is sufficient, the control signal generating section 16 of the control means 12 sets the pressure path switching means 23 on the side where the pressure detecting means 20 and the air inflow path 21 communicate with each other. The circulation pump 6, the flow passage opening / closing means 4, and the air valve 27 are turned on and the same signals as in the steady operation are output, the flow passage opening / closing means 4 and the air valve 20 are opened, and the circulation pump 4 is operated. The output signal output from the pressure detection unit 22 at this time is input to the determination unit 15. In the determination unit 15, the input signal satisfies the predetermined circulating water amount indicated by Q1 and Q2 in FIG. 7, and the air suction pressure by the ejector action of the air supply means 7 becomes the negative pressure indicated by P1 and P2. In this case, the performance is determined to be sufficient. If the input signal has a positive pressure as shown in FIG. 7P3, that is, if the circulating water amount is Q3 that is less than or equal to the predetermined flow rate, and the suction of air by the ejector action of the air supply means 7 is stopped, the performance is insufficient. It is determined that there is.

The determination result of the determination unit 15 is sent to the drive signal generation unit 16, and the notification unit 18 notifies the determination result to the outside.

Even if the order of the above-mentioned inspection steps is reversed, the same result can be obtained. By performing two inspections of the flow path opening / closing means 4, 5 and the air supply means 7, the opening / closing means, the water pressure feeding means, which are the basic elements constituting the water circulation circuit,
The normal operating state of the air supply means is secured, and the reliability of the purification device is significantly improved.

According to this embodiment, since only one pressure detecting means is used, the variation factor due to the number of detection signals is removed, and the determination accuracy is improved.

Another embodiment in which a plurality of flow path opening / closing means is provided will be described with reference to FIG. In FIG. 8, reference numerals 29 and 30 are the first for separating the water tank 1 and the water purification unit 2 in a water circuit manner.
The flow path opening / closing means and the second flow path opening / closing means are connected in series.

In the above structure, in the case of steady operation, both the first flow path opening / closing means 29 and the second flow path opening / closing means 30 are turned on from the control signal generator 16 of the control means 12, the circulation pump 6 and the air valve 27 are A signal of ON is output, the first flow path opening / closing means 29 and the second flow path opening / closing means 30 are also opened via the drive signal generating section 17, and the circulation pump 4 is operated.
As a result, in the aquarium water, the flow path switching means 3, the first flow path opening / closing means 29, the second flow path opening / closing means 30, the pressure extracting portion 29 to the pressure detecting means 20, the water pressure feeding means 6, the microorganism culture module 8,
It circulates to the aquarium 1. When the water circulates, the negative pressure (ejector action) generated by the high-speed jet generated by the air supply means 7 causes the air to pass through the atmosphere communication path 28 and the pressure detection means 20 and mix into the circulating water from the air inflow path 13. The air mixed in the circulating water enters the microorganism culture module 8 and supplies oxygen to the microorganisms to activate the microorganisms in the module 8.
Circulating water is purified by the activated microorganisms. At this time, the pressure detection means 20 outputs an output signal corresponding to the operating point of the air supply means 7 (FIG. 7P1, P2).

When water leaks from the connecting portion of the purifying unit 2 during the water circulation purifying operation, a signal from the water leak sensor 11 is input to the judging portion 15, and the judgment result that the water leakage has occurred is the drive signal generating portion 17. Is stopped, the voltage supply sent from there is stopped, the first flow path opening / closing means 29 and the second flow path opening / closing means 30 are closed, and the water pressure supply means 6 is stopped. As a result, the circulation path between the water tank 1 and the purification unit 2 is blocked, and the water in the water tank 1 is prevented from leaking to the outside.

Next, in the inspection cycle, the first flow path opening / closing means 29 is turned off from the control signal generator 16 of the control means 12.
The FF signal is output, and the first flow path opening / closing means 29 is closed while the circulation pump 6 is in the operating state. As a result, the circulation of the aquarium water is stopped. At this time, the output signal output from the pressure detection unit 9 is input to the determination unit 15. When the input signal is the signal value of the suction pressure equal to or lower than the suction pressure Pt in FIG. 4B, the determination unit 15 determines that the closing performance of the first flow path opening / closing means 29 is sufficient, and the signal shown in FIG. If the signal value indicated by Pb in b) is a decrease in suction pressure, it is determined that the closing performance is insufficient. The determination result of the determination unit 15 is sent to the drive signal generation unit 17, and if the closing performance is insufficient, the notification means 18 is turned on as in the above embodiment.

When the determination of the first flow path opening / closing means 29 is completed,
A signal indicating that the first flow path opening / closing means 20 is ON and a signal indicating that the second flow path opening / closing means 30 is OFF are output, and similarly to the above, the output signal output from the pressure detection means 9 at this time is sent to the determination unit 15,
Similar to the above, the closing performance is determined by comparing with the characteristic values of FIG. The determination result is sent to the drive signal generator 17, and if the closing performance is insufficient, the notification means 18 is turned on.

When the inspection is completed, the second flow path opening / closing means 30
Is turned on, and the first flow path opening / closing means 29 and the second flow path opening / closing means 3 are turned on.
When 0 is set to the opened state, the operation is returned to the normal operation and the operation is continued.

As a result of the inspection of the opening / closing means, if an external notification that the closing performance is poor is issued, the flow path opening / closing means is repaired or replaced so that normal operation can always be performed.

According to this embodiment, since the two opening / closing means are connected in series, the probability that two opening / closing means fail to open / close at the same time is extremely reduced, and the reliability of the purification device is significantly improved.

[0045]

As is apparent from the above description, the water purifying apparatus of the present invention has the following features: (1) By disposing a plurality of opening / closing means in parallel, even if the opening / closing means in use fails. Since it is switched to the opening / closing means, the operation can be continued without impairing the function of the purifying device. Moreover, by regularly checking the characteristic values of the opening / closing means in the periodic inspection of the opening / closing means, early maintenance of the opening / closing means, for example, internal cleaning and parts replacement, can be taken promptly, and the reliability of the purification device is significantly improved. Improve to.

(2) By periodically operating the opening / closing means, there is a prevention of sticking of the operating part due to microorganisms, scales, etc., and a function of rinsing away the dust that has entered the inside, so that the reliability of the opening / closing means is significantly improved. .

(3) 2 of flow path opening / closing means and air supply means
By performing one inspection, the normal operating states of the opening / closing means, the water pressure feeding means, and the air supply means, which are the basic elements constituting the water circulation circuit, are secured, and the reliability of the purification device is significantly improved.

(4) By arranging a plurality of opening / closing means in series, the probability of failure of opening / closing of the opening / closing means is extremely reduced, and the reliability of the purifying apparatus is significantly improved. In particular, when a leak occurs in the purifying device, the opening / closing means reliably shuts off the water tank, and damage due to water leakage can be prevented.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a water purification device according to an embodiment of the present invention.

FIG. 2 is a block diagram of the control means shown in FIG.

FIG. 3 is a flow chart diagram when inspecting the flow path opening / closing means of FIG.

FIG. 4 is a time chart diagram showing the relationship between the operation of the flow path opening / closing means and the pressure change of the pressure detection means of FIG.

FIG. 5 is a cross-sectional view of a water purification device according to another embodiment of the present invention.

6 is a block diagram of the control means shown in FIG.

FIG. 7 is an air suction characteristic diagram of the air supply means shown in FIG.

8 is a block diagram of the control means shown in FIG.

FIG. 9 is a perspective view of a conventional water purification device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water tank 2 Purification unit 3 Flow path switching means 4, 5 Flow path opening / closing means 6 Water pressure feeding means 7 Air supply means 8 Microorganism culture module 9 Pressure detection means 12 Control means 15 Judgment section 16 Control signal generation section 17 Drive signal generation section

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Ikuo Kobayashi Ikuo Kobayashi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Masao Noguchi 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. At least two flow paths for circulating water in an aquarium.
Flow path switching means for selectively switching the flow paths provided in parallel, flow path opening / closing means respectively provided in the flow paths provided in parallel, water pressure feeding means, and provided on the downstream side of the open / close valve A circulation flow path having a pressure detection means, a flow path switching means, a control means for controlling the drive of the flow path opening / closing means and the water pressure feeding means are provided, and the control means sets the flow path of the flow path switching means, and A control signal generating section that periodically outputs a flow path opening / closing means shutoff signal, a judging section that judges whether the signal value from the pressure detecting means is a predetermined value or less, a drive signal generating section that outputs a driving signal to the outside based on the judgment result. Water purification device composed of and. 2. At least two flow paths for circulating water in the aquarium.
Flow path switching means for selectively switching the flow paths provided in parallel, flow path opening / closing means provided in each of the flow paths provided in parallel, water pressure feeding means, microorganism culture module, high speed to this microorganism culture module A circulation flow path in which air supply means for sequentially supplying gas into the circulating water by a suction action of a jet flow is arranged, a pressure detection means provided at an air inlet of the air supply means, the flow path switching means, and a flow path. And a control means for controlling the driving of the opening / closing means and the water pressure feeding means, wherein the control means sets the flow path of the flow path switching means, and a control signal generating section which periodically outputs a flow path opening / closing means cutoff signal, A water purifying apparatus comprising: a determination unit that determines whether a signal value from the pressure detection unit is a predetermined value or less, and a drive signal generation unit that outputs a drive signal to the outside based on the determination result. 3. A circulation flow path in which a plurality of flow path opening / closing means, which are connected in series, are provided in sequence in a flow path for circulating water in a water tank, a water pressure feeding means, and a pressure detecting means on the downstream side of the open / close valve. And a control means for controlling the drive of the plurality of flow path opening / closing means and the water pressure feeding means, the control means is configured to set the flow path of the flow path switching means, and to periodically cut off the flow path opening / closing means. A water purifying device comprising a control signal generating section for outputting a signal, a judging section for judging whether the signal value from the pressure detecting means is a predetermined value or less, and a driving signal generating section for outputting a driving signal to the outside based on the judgment result.