JP2008307541A - Water treatment apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water treatment apparatus capable of maintaining water quality by effective sterilization through an electrolytic treatment. <P>SOLUTION: The water treatment apparatus used in connection with a water tank comprises an electrolytic tank for the electrolytic treatment by passing a current through water, a pump for supplying the electrolyzed water in the electrolytic tank to the water tank, a water supply conduit from the electrolytic tank to the pump, and a framework to unitize these components by housing them. The water treatment apparatus is characterized in that the framework is divided between a first space and a second space disposed directly below the first space, and in that the electrolytic tank is disposed in the first space while the pump and the water supply conduit in the second apace. Since the footprint of the framework as a unit can be smaller than ever before by disposing the electrolytic tank and the pump one above the other, the apparatus can be adapted flexibly to the situation of the installation space by simplifying the installation operation etc. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a water treatment apparatus for sterilizing water stored in various water tanks such as a water supply tank provided on the roof of a building or the like, or a pool or a bathtub.

  For example, in buildings such as office buildings and condominiums, as water supply equipment for supplying water to a plurality of water supply ports (water supply taps, water supply units to water heaters, etc.) provided on each floor, water taken from water pipes is used in the building. Generally, a water supply tank provided on a rooftop or the like is temporarily stored in a water supply tank and then provided with a water supply channel for supplying water from the water supply tank to each water supply port.

  Conventionally, such water supply facilities have relied on the sterilization power of chlorine added to tap water at water purification plants in order to maintain the water quality.

  However, the maintenance of water quality was obliged because there were many cases in which water quality deteriorated due to proliferation of fungi and algae by neglecting maintenance such as regularly cleaning the inside of the water tank.

  Therefore, a method of sterilizing the water stored in the water supply tank by supplying a chlorine agent such as sodium hypochlorite aqueous solution from the chlorine supply device according to the residual chlorine concentration, and an apparatus for carrying out the method Has been proposed (see, for example, Patent Document 1).

  However, in the method and apparatus described in the above publication, it is necessary to periodically replenish the chlorine supply apparatus with an irritating chlorine agent such as a sodium hypochlorite aqueous solution, which is troublesome and has a high running cost. There was a problem of sticking.

  Therefore, the inventor considered incorporating a water treatment apparatus disclosed in, for example, Patent Document 2 and the like for sterilization by energizing water in these facilities.

  In the above water treatment apparatus, when a direct current is passed through the electrolytic treatment means to water containing chlorine such as tap water, or water to which salt is added as necessary, the following electrochemical reaction occurs.

(Anode side)
4H ₂ O-4e ⁻ → 4H ⁺ + O ₂ ↑ + 2H ₂ O
2Cl ⁻ → Cl ₂ + 2e ⁻
H ₂ O + Cl ₂ ⇔HClO + H ⁺ + Cl ⁻
(Cathode side)
4H ₂ O + 4e ⁻ → 2H ₂ ↑ + 4OH ⁻
(Anode side + cathode side)
H ⁺ + OH ⁻ → H ₂ O
Then, water is sterilized by sterilizing action such as hypochlorous acid or its ions (HClO, ClO ⁻ ) and chlorine (Cl ₂ ) generated during the above reaction, or active oxygen that exists only for a short time during the reaction. Can be processed.
JP-A-5-7897 (columns 0016 to 0020, FIG. 1) JP 2001-170638 A (column 0025, column 0027 to column 0028)

  When installing a water treatment device in a water supply system of a water supply tank type, a water treatment tank is provided for taking water from the water supply tank and returning it to the water supply tank after treatment. As a configuration provided with a circulation pump for continuously circulating the water through the water tank and an electrolytic treatment means for continuously conducting the electrolytic treatment by energizing the water flowing through the treatment water channel, the water treatment apparatus is used to continuously In addition, or intermittently, the water in the water supply tank is preferably sterilized.

  In this case, it is necessary to open a part of the water supply tank so that hydrogen gas and oxygen gas generated in the reaction process are not stored in the water supply tank.

  However, it is not preferable for safety and health to open a part of the water tank that is normally completely sealed, and it does not comply with the regulations of the water supply law.

  Further, even if the open portion is protected, it does not prevent the entry of a certain amount of foreign matter, dust, dust, etc., and there is a problem that exhaust performance is lowered and costs are increased by using a protective structure.

  In addition, since water tank type water supply facilities are often installed in places where people do not go in and out, such as the rooftops of buildings as described above, water treatment equipment installed in the same place, such as piping and Or if clogging occurs in a filter for water filtration, etc., and the water stays inside the device, if the discovery is delayed, fungi mixed in the water will grow inside the device, and this will be the water supply tank It may flow into the water and cause water quality to deteriorate.

  Similarly, if water leaks occur at the pipe connection of a water treatment device or the electrode used for the electrolytic treatment means deteriorates, if the discovery is delayed, water intrusion into the building or treatment efficiency There is also a possibility of causing problems such as deterioration of water quality due to decrease in water.

  In particular, a water treatment apparatus installed outdoors such as a rooftop of a building has a problem that it is easily damaged by being exposed to wind, rain, dust, and dust.

  In addition, when installing a water treatment device in a relatively large-capacity water tank such as a pool or a public bath tub, dilute a saturated or near high-concentration saline solution to the desired concentration with dilution water, After electrolytic treatment in a state of being stored in the tank, or after temporarily storing the water after electrolytic treatment in a water tank formed integrally with the electrolytic tank, water having such a sterilizing action is used as a sterilization treatment agent by using a pump. It is preferable that the water tank is supplied.

  Conventionally, in such a water treatment apparatus, the electrolytic cell and the pump are separately provided in order to cope with the conditions of various installation locations. In this case, the electrolytic cell installation location and the pump installation location are required. On the other hand, there is a problem that it cannot sufficiently cope with the state of the installation place.

  In addition, for example, in a play facility with a plurality of pools or a bathhouse facility with a plurality of bathtubs, if one device is provided for each pool or bathtub, the control of each device becomes complicated. There is also a problem that the initial cost and running cost are high.

  In the above water treatment device, depending on the quality of the raw water, among the electrodes contained in the electrolytic cell, minerals such as calcium and magnesium contained in the water are deposited on the surface of the cathode electrode as scales. However, it may drop from the surface of the electrode and clog the pump, or it may flow into the water tank and make the water turbid.

  In addition, when air biting occurs in the water treatment apparatus, there is a possibility that the pump may break down or the water supplied to the water tank may become cloudy.

  Furthermore, when diluting water is directly supplied to the electrolyzer from a water supply source such as a water pipe or well or a water receiving tank provided outside the unit, it depends on the positional relationship between the unit and the water supply source or the water pressure of the water supply source. The amount of dilution water may not be stable. Therefore, it is considered that a pressure reducing valve is provided in the middle of the piping for supplying water to the electrolytic cell, and this pressure reducing valve is adjusted so that water is supplied to the electrolytic cell from the water supply source with a constant amount of water when the apparatus is installed. However, since the pressure reducing valve is only adjusted at the time of installation and is used after being fixed, there is a problem that the equipment is wasted and the installation work becomes complicated as the adjustment work is added.

  An object of the present invention is to provide a novel water treatment apparatus that does not cause the above various problems.

  The invention according to claim 1 is a water treatment device used by being connected to a water tank, for supplying the water tank with an electrolysis tank for energizing and electrolyzing the water, and water electrolyzed in the electrolysis tank. The apparatus includes a pump, a water supply pipe from the electrolytic cell to the pump, and a frame for accommodating these members to form a unit, and the frame is divided into a first space and a second space immediately below the first space. The water treatment apparatus is characterized in that the electrolytic cell is accommodated in the first space and the pump and the water supply pipe are accommodated in the second space.

  The invention according to claim 2 is the water treatment device according to claim 1, wherein a plurality of installation positions of the pump for installing the pump in different directions and positions are provided in the second space. is there.

  A third aspect of the present invention is the water treatment apparatus according to the second aspect, wherein a plurality of pipe connection portions corresponding to the installation positions of the plurality of pumps are provided in the water supply pipe.

  The invention according to claim 4 is provided with a water storage tank for storing the electrolyzed water in the electrolytic tank, and the water inlet of the water supply pipe protrudes upward in the vertical direction from the bottom surface of the water storage tank. The water treatment apparatus according to claim 1, wherein the water supply pipe is connected to the water storage tank.

  The invention according to claim 5 is provided with a water level sensor for detecting that the water level of the water tank has reached a preset full water level or drought level, and the drought level is perpendicular to the water inlet of the water supply pipe. The water treatment device according to claim 4, wherein the water treatment device is set upward.

  A sixth aspect of the present invention is the water treatment apparatus according to the first aspect, wherein a dilution water tank for storing dilution water to be supplied to the electrolytic cell is disposed immediately above the first space.

  According to the configuration of claim 1, the installation area of the frame body as a unit can be made smaller than before by arranging the electrolytic cell and the pump so as to overlap each other. It is possible to flexibly respond to the state of the installation location.

  According to the configuration of claim 2, by changing the installation position of the pump, the direction and position of the pipe from the pump to the water tank can be arbitrarily changed without changing the direction and installation position of the frame as a unit. Therefore, it becomes possible to respond more flexibly to the state of the installation location.

  According to the configuration of claim 3, since water having sterilization action can be supplied as a sterilizing agent to a plurality of water tanks using a single water treatment device, for example, a play facility equipped with a plurality of pools, In a bathing facility equipped with a bathtub, it is possible to simplify the control of the water treatment apparatus and reduce the initial cost and running cost.

  According to the configuration of claim 4, the scale that has fallen from the electrode accumulates at the bottom of the water storage tank, so that water that does not include the scale can be taken from the water inlet of the water supply pipe and sent to the pump. .

  Therefore, it is possible to reliably prevent the scale from clogging the pump or flowing into the water tank and making the water cloudy.

  According to the configuration of claim 5, since the drought level which is a reference for stopping the pump and stopping the water supply from the water storage tank is set vertically above the water inlet of the water supply pipe, air biting occurs. Thus, it is possible to reliably prevent the pump from malfunctioning or the water supplied to the water tank from becoming cloudy.

  According to the configuration of claim 6, since the water from the water supply source is once stored in the dilution water tank and then supplied to the electrolysis tank, the amount of dilution water is always stabilized without providing a pressure reducing valve or the like. be able to.

  FIG. 1 shows a water treatment apparatus 1 according to one embodiment of the present invention connected to a drinking water supply tank 2 installed on a building or a rooftop of a condominium to sterilize water and purify the water supply tank 2. It is a figure which simplifies and shows the structure for using it. FIG. 2 is a front view showing the actual piping of the water treatment apparatus 1.

  With reference to these drawings, the water treatment apparatus 1 of this example takes the water w1 from the water supply tank 2, performs electrolytic treatment by the electrolytic treatment means 11, and then returns the treated water channel 100 for returning to the water supply tank 2 again. Have.

  In FIG. 1, reference numeral 21 is a pipe for supplying water from a water supply source such as a water pipe to the water supply tank 2, and 22 is a pipe for supplying water from the water supply tank 2 to each room of a building or an apartment. In addition, the connection portion of the pipe 21 to the water supply tank 2 is opened and closed as the float 24 moves up and down according to the water level of the water supply tank 2, thereby keeping the water level of the water supply tank 2 within a certain range. A float valve (not shown) is provided.

  Reference numeral 23 is an overflow pipe for flowing excess water to the drain port D1 when the water level of the water supply tank 2 exceeds a preset upper limit value due to a failure of the float valve.

  As shown in FIG. 2, the electrolytic treatment means 11 is inserted in the middle of a pipe 100a forming the treatment water channel 100, and a cylindrical casing 11a having a diameter larger than that of the pipe 100a, and the casing 11a, Although only one front side is shown in the drawing, which is arranged in an electrically insulated state, it actually includes a plurality of electrodes 11b.

  In the figure, reference numeral 11c denotes a terminal portion extending from each electrode 11b to the outside of the housing 11a, and is not shown in the housing 11a and a function as a terminal for connecting a wire to the electrode 11b. Is fixed through an insulator or the like, thereby also having a function as a fixing portion for positioning the electrode 11b at a predetermined position in the housing 11a. Therefore, in order to make positioning and fixing more reliable, in the example shown in the figure, two terminal portions 11c are provided for each electrode 11b.

  As the electrode on the anode side of the electrode 11b, an electrode (DSA electrode) having a function of generating hypochlorous acid or the like by the above-described electrochemical reaction is used.

  Such a DSA electrode functions as a catalyst during an electrochemical reaction, such as gold (Au), platinum (Pt), palladium (Pd), platinum-palladium (Pt—Pd), platinum-iridium (Pt—Ir), etc. A thin film of a noble metal is coated on the entire surface of a substrate made of titanium (Ti) or the like by plating or firing.

  As the cathode-side electrode, the above-mentioned titanium substrate or the like can be used as it is.

  In addition, in order to extend the life of both electrodes by suppressing rapid deterioration of the electrodes on the anode side and adhesion of scales to the electrodes on the cathode side, electrolytic treatment is performed by periodically reversing the polarity of both electrodes. It is also possible. In that case, both electrodes may be DSA electrodes.

  Further, in this example, as shown by the solid line arrow in FIG. 2, the pipe 100a forming the treated water channel 100 is arranged so that water flows into the electrolytic treatment means 11 from below in the vertical direction and flows out upward in the vertical direction. It is arranged.

  Thereby, the gas such as hydrogen or oxygen generated by the above-described electrochemical reaction can be smoothly discharged to the downstream side by the water flow without staying in the casing 11a of the electrolytic treatment means 11.

  With reference to FIGS. 1 and 2, a valve V <b> 1 is closed upstream of the electrolytic treatment means 11 in the treatment water channel 100 during maintenance of the water treatment device 1 or the water supply tank 2 and shuts off the two. And an electromagnetic valve (open / close valve) V2 that is opened and closed by a control signal from a control means (not shown) and a circulation pump P1 for circulating the water w1 in the treatment water channel 100 are arranged in this order. .

  Further, downstream of the treatment water channel 100 from the electrolytic treatment means 11, the mineral replenishment part M <b> 1 for replenishing minerals to the electrolyzed water, the filter 12 for water filtration, and the inside of the treatment water channel 100 flow. When the flow switch as the flow sensor S1 for detecting the flow rate of water and water leakage occurs particularly at the connection part of the pipe 100a and the operation of the water treatment apparatus 1 is stopped and the electromagnetic valve V2 is closed, A check valve V3 for preventing water from continuing to flow into the downstream pipe 100a from the water supply tank 2 and out of the water leaking part, and closed during maintenance of the water treatment apparatus 1 and the water supply tank 2 Thus, a valve V4 for shutting off the both is arranged in this order.

  Further, the treatment water channel 100 is branched from a branch point J1 between the mineral replenishment part M1 and the filter 12, and a branch water channel 101 is extended upward in the vertical direction as shown in FIG. An automatic gas vent valve 13 is connected to the upper end.

  And thereby, the part before and behind the automatic degassing valve 13 of the treatment water channel 100, specifically, the part from the mineral replenishment part M1 to the filter 12 is arrange | positioned below the said automatic degassing valve 13 in the perpendicular direction. Thus, the gas flowing in the treatment water channel 100 can be automatically collected in the automatic gas vent valve 13 by its own buoyancy.

  Among the above-mentioned parts, the mineral replenishment part M1 is a substance serving as a source of minerals, such as natural products such as granular barley stone and coral sand, or artificial materials such as ceramics in the tank M1a shown in FIG. Is stored in the form of a column that can come into contact with water. Then, when water is supplied into the tank M1a through the treated water channel 100 and brought into contact with these substances, mineral components are eluted and replenished in the water, and then sent to the downstream side of the treated water channel 100.

  As shown in FIG. 3, the filter 12 has a cylindrical casing 12a whose upper and lower sides are closed, and a cylindrical filter 12b disposed in the casing 12a.

  In addition, a pipe 100a that forms a treatment water channel 100 is connected to the upper portion of the housing 12a.

  The lower end of the tube of the filter 12b is closed by a lid 12c, and the upper end is connected to partitions 12e and 12f formed on the top surface of the casing 12a, whereby the inside of the casing 12a is treated with a treatment channel. 100 is divided into an upstream side (left side in the figure and the outside of the cylinder of the filter 12b) and a downstream side (right side in the figure and the inside of the cylinder of the filter 12b).

  The filter 12b is formed of a porous body such as a natural or chemical fiber non-woven fabric, particularly a porous body made of polyvinyl chloride or polyolefin (polyethylene) having resistance to electrolyzed water, and its opening diameter. When a preset water pressure generated in the treatment water channel 100 by applying the circulation pump P1 is applied to the outside of the cylinder, water passes through the inside of the cylinder, but fine bubbles of gas mixed in the water. In addition, it is set to a size that does not allow fragments such as barleystone and coral sand that have left the mineral supply unit M1 or fine solid matter mixed in the water w1 taken from the water supply tank 2 to pass through.

  In the filter 12, when water subjected to electrolytic treatment is supplied from the upstream side of the treated water channel 100 as indicated by solid arrows in the figure, the water is first partitioned by the filter 12b in the housing 12a. After flowing into the region outside the formed cylinder, it flows into the inside of the cylinder through the filter 12b.

  However, fine gas bubbles and solid matter mixed in water are retained outside the cylinder by the function of the filter 12b described above.

  For this reason, clean water free from white turbidity, in which fine bubbles of gas and solids are removed, is sent out to the downstream side of the filter 12 in the treatment water channel 100.

  As shown in FIGS. 4 (a) and 4 (b), the automatic gas vent valve 13 is connected to the inside of the branch water channel 101 through the opening 101b provided in the top plate 101a that closes the top of the branch water channel 101, and closes the top. A cylindrical casing 13a, a float 13b arranged in the casing 13a so as to be movable up and down, a gas outlet 13c formed at the top of the casing 13a, and a outlet according to the vertical movement of the float 13b And a lid 13e with a link mechanism 13d for closing [FIG. (B)] or opening [FIG. (C)].

  Some of the fine bubbles of the gas generated when the electrolytic reaction is performed by the electrolytic treatment means 11 deviates from the main stream at the branch point J1, rises up the branch water channel 101, and directly reaches the opening 101b. A large number of gas is separated from the water by forming a large number in the vicinity of the opening 101b, or in the housing 13a of the automatic gas vent valve 13 that has passed through the opening 101b.

  Further, the remaining part of the bubbles flows to the downstream side of the branch point J1 of the treatment water channel 100 and is blocked from passing by the filter 12b, so that the bubbles are retained outside the tube of the filter 12b. And the retained air bubbles are separated from the water by becoming one, and stay in the vicinity of the top surface of the housing 12a or in the upstream pipe 100a connected to it as a larger gas lump, In particular, during a temporary stop for promoting degassing, surplus gas that could not be retained returns to the treatment water channel 100, rises up the branch water channel 101 by its own buoyancy, reaches the opening 101 b, and automatically gas through the opening 101 d. It flows into the drain valve 13.

  Then, these gas g lumps, or fine bubbles remaining without being in contact with the gas g lumps at this time, pass through the gap between the housing 13a and the float 13b, and float in the housing 13a. Move to the area above 13b.

  If the float 13b is in the raised position as shown in FIG. 5 (b) and the gas g continues to flow and move in the closed state where the lid 13e closes the discharge port 13c, the float 13b in the casing 13a is above the float 13b. The gas g is gradually accumulated in this region and its internal pressure gradually rises, and accordingly the float 13b starts to fall gradually. This descending proceeds rapidly in a state where the water pressure is lowered due to the temporary stop of the water treatment apparatus 1.

  When the float 13b is lowered to the position shown in FIG. 3C, the lid 13e is rotated by the link mechanism 13d, and the discharge port 13c is opened to be in the open state.

  In this state, when the suspension of the water treatment device 1 is released and the operation is resumed, the float 13b starts to gradually rise due to the water pressure of the water w1, and accordingly, the housing 13a is above the float 13b. The gas g accumulated in the region is discharged out of the system through the discharge port 13c.

  When the discharge of the gas g progresses and the float 13b rises to the position shown in FIG. (B), the lid 13e is rotated by the link mechanism 13d to close the discharge port 13c. Accumulation starts.

  The automatic degassing valve 13 functions to automatically discharge the gas g out of the system by repeating the above operation.

  Referring to FIGS. 1 and 2 again, the treatment water channel 100 branches at a branch point J2 between the circulation pump P1 and the electrolytic treatment means 11, and the drainage channel 102 reaches the drain port D1 through the valve V5. It branches at the branch point J3 between the branch point J1 and the filter 12, and connects the drainage channel 102 via the valve V6 and the drainage channel 103 that joins at the junction point J4 downstream from the valve V6. is there. The valves V5 and V6 are closed when the water treatment apparatus 1 is in operation, and are opened during maintenance or the like to drain water from the water treatment apparatus 1.

  In FIG. 2, only the portion of the treated water channel 100 downstream from the valve V1 and upstream from the valve V4 is shown, and the valves V1 and V4 are not shown. Further, the drainage channel 102 is also shown only up to the middle part leading to the drain port D1. This is because the illustrated portion is accommodated in an exterior cover described later and unitized.

  The valves V1 and V4 are attached to the water supply tank 2 in advance separately from this unit. When the unit is installed, the starting end 100b of the treatment water channel 100 of the unit shown in the figure is connected to the piping following the valve V1, the terminal 100c is connected to the piping following the valve V4, and the drain 102 is further connected to the terminal 102a. A water treatment device 1 is configured by connecting a pipe reaching the port D1.

  Then, when the water treatment apparatus 1 is in operation, water flows from the water supply tank 2 through the starting end 100b into the treated water channel 100 as shown by the white arrows in the figure, and passes through the above-mentioned parts for treatment. Then, similarly, as shown by the white arrow, it passes through the end 100c and is returned to the water supply tank 2. When the valves V1 and V4 are closed and the valves V5 and V6 are opened at the time of maintenance or the like, the water in the water treatment apparatus 1 passes through the drainage channels 102 and 103 and is indicated by black arrows in the figure. And drained to the drain port D1 through the end 102a.

  FIG. 5 is a block diagram showing an electrical configuration of the water treatment apparatus 1 of FIG.

  As shown in the figure, the water treatment apparatus 1 is provided with a control means 30 that operates each of the parts while controlling the energization of the electrode 11b of the electrolytic treatment means 11.

  The flow rate sensor S1 and the output of the current sensor S2 for measuring the current value of energization to the water by the electrolytic treatment means 11 which are not shown in the respective drawings are given to the control means 30. In the control means 30, there are provided a timer 31 for defining the timing of various operations and a memory 32 in which initial values and the like serving as a reference for various operations are registered.

  The control means 30 performs various calculations based on the outputs of the sensors S1 and S2, the timing defined by the timer 31, the initial value recorded in the memory 32, and the like, and gives a control signal to the driver 33 based on the calculation. The driver 33 performs energization control to the electrode 11b based on the given signal, performs drive control of the circulation pump P1, and performs opening / closing control of the electromagnetic valve V2.

  An example of control by the control means 30 during operation of the water treatment apparatus 1 is shown in FIG.

  First, when an operator or the like instructs the start of operation of the water treatment apparatus 1 in step SP1, the control means 30 reads an initial value serving as a reference for operation previously recorded in the memory 32 in step SP2.

As the initial value, for example, after the operation of the water treatment apparatus 1, a waiting time T ₁ until the flow rate detection by the flow rate sensor S 1 and the current value measurement by the current sensor S 2 are started,
A time T ₂ for defining the interval at which the water treatment device 1 is temporarily stopped during its operation to promote degassing;
-Time T ₃ for defining the length of the pause,
· The current value C as measured by a current sensor S2, and the like threshold C ₁ as a reference to determine the presence or absence of deterioration of water leakage and the electrode 11b of the pipe.

What defines the out latency T ₁ is the water flow in the process water channel 100 were allowed to operate the circulation pump P1 to stabilize and electrochemical reactions described above energizing of the electrode 11b is stabilized This is because it takes some time to complete.

  Next, in step SP3, the control means 30 opens the electromagnetic valve V2 if it is closed, and drives the circulation pump P1 to circulate water in the treatment water channel 100 and energize the electrode 11b. The operation of the water treatment apparatus 1 is started by starting an electrochemical reaction. At the same time, the timer 31 is reset (T = 0) to start timing.

In step SP4, after the measured time T by the timer 31 has waited to reach the waiting time _{T 1} described above (T = _{T 1),} the routine proceeds to step SP5, according to the flow rate sensor S1, the flow rate of water flowing to the process water path 100 Start detecting.

  In this example, the flow sensor S1 is a flow switch that detects whether the flow rate is greater than or equal to a predetermined value (switch ON) or less than a predetermined value (switch OFF) as described above. The detection of the flow rate is detection of whether the flow switch is ON or OFF.

  In a normal state in which clogging does not occur in the pipe 100a and the filter 12b of the treatment water channel 100, the flow switch is turned on. Therefore, the control means 30 then proceeds to step SP6 and starts measuring the current value C for energizing the water by the electrolytic treatment means 11 using the current sensor S2.

In the normal state where the deterioration of the water leakage or the electrode 11b of the piping 100a is not generated, the current value C indicates a value of the threshold C ₁ or more of the aforementioned (C ≧ C _1). Therefore, the control means 30, then proceeds to step SP7, measured time T by the timer 31, described above, whether or not reached the time T ₂ of the order to define the interval for temporarily stopping the water treatment device 1 If it has not been reached (T <T ₂ ), the process proceeds to step SP8, where it is determined whether or not the operation end of the water treatment apparatus 1 has been selected by an operator or the like.

  If the end of operation is not selected, the process returns to step SP4, and the operation of the water treatment apparatus 1 is continued while repeating steps SP4 to SP8.

  On the other hand, when clogging occurs in the piping 100a, the filter 12b, etc., the flow rate of the water flowing through the treatment water channel 100 decreases, and the flow switch as the flow rate sensor S1 is turned off, the control means 30 detects this in step SP5. Then, the process proceeds to step SP10 of the subroutine of FIG.

  In step SP10, the circulation pump P1 is stopped and the energization to the electrode 11b is stopped to stop the operation of the water treatment apparatus 1. Then, in step SP11, the electromagnetic valve V2 is closed, and the water treatment apparatus 1, the water supply tank 2, and the like. Prevent free water flow between. That is, it is possible to prevent a water flow from being generated in the treatment water channel 100 in accordance with the increase or decrease of the water in the water supply tank 2 even though the circulation pump P1 is stopped.

  For this reason, even if fungi or the like grow in the water treatment apparatus 1 until the operator or the like arrives at the installation location of the water treatment apparatus 1 and closes the valves V1 and V4, the fungi get on the water flow. It is possible to prevent the water quality from deteriorating by flowing into the water supply tank 2.

  Next, at step SP12, the control means 30 activates the abnormality notification means (alarm lamp, alarm buzzer, etc.) provided on the control panel, etc., and starts the abnormality notification to the operator, etc. Until stop is instructed, in step SP13, this state is maintained and standby is continued.

  And when operation stop is instruct | indicated in order to perform a maintenance in step SP13, the control means 30 will progress to step SP14, and will stop all the driving | operations of the water treatment apparatus 1. FIG.

In the main routine of FIG. 6, the deterioration of the water leakage or the electrode 11b of the piping 100a is generated, the current value C as measured by a current sensor S2 becomes less than the threshold value C ₁ (C <C _1), control means 30 detects this at step SP6 and proceeds to step SP15 of the subroutine of FIG. 7B.

  In step SP15, the circulation pump P1 is stopped and the energization to the electrode 11b is stopped to stop the operation of the water treatment apparatus 1, and then in step SP16, the electromagnetic valve V2 is closed.

  Then, especially when water leakage has occurred, the electromagnetic valve V2 and the check valve V3 until the operator arrives at the installation location of the water treatment device 1 and closes the valves V1 and V4. As described above, it is possible to prevent water from flowing into the pipe 100a from the water supply tank 2 and continuing to flow out of the water leakage portion.

  Similarly to the case described above, even if fungi or the like grow in the water treatment apparatus 1, it is possible to prevent the fungus from getting into the water supply tank 2 by riding on the water flow described above and deteriorating the water quality.

  Next, in step SP17, the control means 30 activates the abnormality notification means to start the abnormality notification to the operator and the like, while maintaining this state in step SP18 until the noticed operator or the like gives an instruction to stop the operation. Continue waiting.

  In step SP18, when the operation stop is instructed to perform maintenance, the control unit 30 proceeds to step SP19 and stops all operations of the water treatment apparatus 1.

Of the main routine of FIG. 6, step SP5 and not detected abnormality as described above in SP6, when we continue normal operation, eventually counted time T by the timer 31 reaches the time T ₂ described above (T = _T 2).

  Then, the control means 30 detects this at step SP7 and proceeds to step SP20 of the subroutine of FIG. 7 (c).

  In step SP20, the circulation pump P1 is stopped and the energization to the electrode 11b is stopped to temporarily stop the operation of the water treatment apparatus 1, and the timer 31 is reset to start measuring the time of the pause.

In step SP21, the counted time T by the timer 31, after continued paused state until the time T ₃ which defines the length of the pause that described above, by driving the circulation pump P1 proceeds to step SP22 While circulating water in the treatment water channel 100, the operation of the water treatment apparatus 1 is restarted by energizing the electrode 11b to start an electrochemical reaction. At the same time, the timer 31 is reset (T = 0), the time is started, the process returns to step SP4 of the main routine of FIG. 6, the water flow in the treated water channel 100 is stabilized, and the electrode 11b is energized. After waiting in step SP4 until the chemical reaction is stabilized, steps SP4 to SP8 are repeated to continue normal operation.

  In step SP8, when an operator or the like instructs to stop the operation of the water treatment apparatus 1, the control means 30 proceeds to step SP9, stops the circulation pump P1 and stops energization of the electrode 11b to stop the water treatment apparatus 1. End driving.

  By performing the above control, the water in the water supply tank 2 can be sterilized while monitoring occurrence of clogging or water leakage of the treatment water channel 100, deterioration of the electrode 11b, and the like.

  FIG. 8 is a perspective view showing an external appearance of the exterior cover 4 for housing the unit shown in FIG. 2 in the water treatment apparatus 1 of the above example.

  The exterior cover 4 shown in the figure has a rectangular parallelepiped shape, and the unit shown in FIG. Reference numeral 41 denotes a back plate formed integrally with the bottom plate 40. Reference numeral 42 constitutes four surfaces of a rectangular parallelepiped excluding two surfaces of the bottom plate 40 and the back plate 41, and is opened and closed by sliding back and forth with respect to the bottom plate 40 as indicated by black arrows and white arrows in the drawing. Cover body.

  The cover main body 42 is fixed to the bottom plate 40 and the back plate 41 by screws N in a state where the cover main body 42 is completely closed as shown by the black arrow from the half-open state in the drawing. In addition, a lock can be inserted into the hole 41a of the back plate 41 and the hole 42a of the cover body 42, which are overlapped with each other in this fixed state, and locked. Thereby, it is possible to prevent a third party who does not have a key other than the operator from touching the water treatment apparatus 1 and improve safety.

  Fig.9 (a) is a structure for using the water treatment apparatus 1 concerning other embodiment of this invention as a supply source which supplies the water which has a sterilization effect | action to water tanks, such as a pool and a bathtub, as a sterilization agent. FIG. 9B is a left side view of the water treatment apparatus 1.

  As shown in these drawings, the water treatment apparatus 1 of this example includes an electrolysis tank 14 for conducting electrolysis by energizing water, and a pump for supplying water electrolyzed in the electrolysis tank 14 to a water tank (not shown). P2 and the water supply pipe 104 from the electrolytic cell 14 to the pump P2 are accommodated in the frame 15 and unitized.

  The frame 15 is divided into a first space 15a that accommodates the electrolytic cell 14, and a second space 15b that accommodates the pump P2 and the water supply pipe 104 directly below the first space 15a. For this reason, the installation area of the frame 15 can be made smaller than before, and it can respond flexibly to the state of the installation location.

  In this example, as shown in FIG. 10, the electrolytic cell 14 has a casing 14a having an opening at the top and a lid 14b that closes the opening, and the inside of the casing 14a is divided by two partition plates 14c. Although one of them is shown in the drawing, only one of the front side is shown in the figure, the electrolytic cell region 14d containing a plurality of electrodes 16 is stored, and the other is stored with water w3 subjected to electric field treatment in the electrolytic cell region 14d. It is a water storage tank area 14e for this purpose.

  In the figure, reference numeral 16a denotes a terminal portion extending from each electrode 16 to the top of the lid body 14b, and connects wiring from a power source (not shown). Reference numeral 105 is a pipe for supplying water w2 obtained by mixing diluted water and saline at a predetermined concentration to the electrolytic cell region 14d.

  When the electrode 16 is energized while supplying water w2 to the electrolytic cell region 14d continuously or intermittently from the pipe 105, the water w2 is electrolyzed in the electrolytic cell region 14d, and has a sterilizing effect. After becoming w3, it overflows from the part of the partition plate 14c, is supplied to the adjacent water tank area | region 14e, and is stored.

At the bottom of reservoir region 14e, the inlet 104a of the water of the water supply pipe 104, they are connected in a state of being projected vertically upward from the bottom surface of the reservoir region 14e by the dimension h _1. For this reason, even if the scale is removed from the electrode 16, it can be accumulated at the bottom of the water storage tank area 14e, and the water w3 not including the scale is taken in from the water inlet 104a of the water supply pipe 104 and pumped. Can be sent to P2. Therefore, it is possible to prevent the scale from clogging the pump P2 or flowing into the water tank and turbidizing the water.

  Reference numeral S3 is a water level sensor for detecting the water level of the water w3 stored in the water tank region 14e.

  The water level sensor S3 includes three electrodes S3a to S3c extending from the lower surface of the lid body 14b toward the bottom surface of the water storage tank region 14e.

  Among these, the common electrode S3a has its tip extended below the water inlet 104a of the water supply pipe 104 near the bottom surface of the water storage tank region 14e, that is, to a height where water w3 always exists. The tip of the drought level electrode S3b extends to the height of the preset drought level of the reservoir region 14e, and the tip of the full water level electrode S3c reaches the full water level of the preset reservoir region 14e. It is extended to the height of.

  The water level sensor S3 detects the drought level when the water level in the water storage tank region 14e is lowered, the tip of the drought level electrode S3b is separated from the water, and the conduction between the drought level electrode S3b and the common electrode S3a is interrupted. Conversely, the water level rises, the tip of the full water level electrode S3c comes into contact with water, and the full water level electrode S3c and the common electrode S3a are electrically connected to detect the full water level.

  And based on this detection result, in order to adjust the water level of the water storage tank area | region 14e between the said drought level and a full water level by drive-controlling the pump P2, the pump of the dilution water tank mentioned later, the pump of a salt water tank, etc. To work.

  Specifically, for example, the pump P2 is basically driven and controlled based on the measurement result of the residual chlorine concentration in a water tank such as a pool. However, when the water level sensor S3 detects the drought level, the above drive is performed. It is forcibly stopped regardless of the control. The dilution tank pump and the saline tank pump are driven when the drought level is detected by the water level sensor S3, and are stopped when the full water level is detected.

For this reason, the water level of the water storage tank area 14e is adjusted between the drought level and the full water level in a normal state, and does not become further below. Moreover, empty water level defined by the height of the tip of the empty water level electrode S3b is set vertically upward by the dimension h ₂ from the water inlet 104a of the feed water pipe 104.

  Accordingly, the water inlet 104a comes out above the water surface and air does not enter the water supply pipe 104, so that the air biting occurs and the pump P2 breaks down or the water supplied to the water tank becomes cloudy. Can be prevented.

  Reference numeral 106 is a drain pipe for discharging excess water w3 to the outside of the tank when the water supply pipe 104 is clogged or the pump P2 fails and the water level in the water storage tank area 14e exceeds the full water level. .

  With reference to FIG. 9 and FIG. 11 (a), the water supply pipe 104 extends vertically downward from the bottom of the electrolytic cell 14 to the vicinity of the bottom plate 15c constituting the second space 15b in the frame 15. The reaching vertical pipe 104b, the two elbow pipes 104c and 104d, and the horizontal pipe 104e disposed in the vicinity of one long side of the rectangular bottom plate 15c are connected in this order. . Among these, the upper end of the vertical pipe 104b is the water inlet 104a described above.

  Further, on the side surface of the horizontal pipe 104e, a plurality of (four in the figure) pipe connection portions 104f for connecting pipes to the pump P2 are provided as shown by a two-dot chain line in FIG. 9A. Although not shown, the pipe connection portion 104f for not connecting the pipe is closed by a removable water stop cock.

  A vertical pipe 104h extending vertically upward is connected to the end of the horizontal pipe 104e via an elbow pipe 104g, and the upper end of the vertical pipe 104h is connected to the drain pipe 106.

  The vertical pipe 104h is provided in order to send fine air bubbles such as air mixed in the water supply pipe 104 or the gas to the drain pipe 106 and remove it from the water supply pipe 104a.

  Reference numerals V7 and V8 are valves for closing the vertical pipes 104b and 104h and shutting off the electrolytic cell 14 and the water supply pipe 104 during maintenance of the water treatment apparatus 1 or the like.

  The water supply pipe 104 changes the direction of the elbow pipes 104c, 104d, 104g and the horizontal pipe 104e, so that as shown in FIG. 11 (b), the horizontal pipe 104e is placed on the side opposite to FIG. 11 (a). It can be repositioned in the vicinity of the long side of the bottom plate 15c.

  The bottom plate 15c is provided with four installation positions A1 where the pump P2 can be installed when the horizontal pipe 104e is arranged at the position shown in FIG. The installation position A2 where the pump P2 can be installed when the horizontal pipe 104e is arranged at the position shown in FIG. 11B is also provided at the same four positions as the pipe connection portion 104f.

  As a result, one pump P2 can be installed at any of the eight installation positions A1 and A2, and piping to the aquarium can be performed, so the orientation and installation position of the frame as a unit can be changed. Without being able to change the direction and position of the piping from the pump to the water tank arbitrarily, it is possible to respond more flexibly to the state of the installation place.

  Also, since two or more pumps P2 can be installed at a plurality of installation positions A1 and A2 and water w3 can be supplied to a plurality of aquariums, for example, a play facility having a plurality of pools, In addition to simplifying control of the water treatment apparatus in a bathhouse facility equipped with a bathtub, it is possible to reduce initial costs and running costs.

  Reference numeral 107 denotes a drain pipe for draining water from the electrolytic cell region 14d of the electrolytic cell 14 during maintenance of the water treatment apparatus 1, and normally the valve V9 provided in the middle is closed and closed. It is. Similarly, reference numeral 108 is a drain pipe for draining water from the water storage tank area 14e. Normally, the valve V10 provided in the middle is closed and closed.

  These drain pipes 107 and 108 are connected to a drain pipe 106 (not shown). The drainage of the drain pipe 106 and drain pipes 107 and 108 is drained through a pipe reaching the drain port connected to the end 106a of the inter-drain 106, although this is not shown.

  FIG. 12 shows a modified example in which a dilution water tank 17 for storing dilution water to be supplied to the electrolytic cell 14 is disposed directly above the first space 15a among the units of the water treatment apparatus 1 composed of the above-described parts. FIG.

  Reference numeral 109 is a pipe for supplying the dilution water w4 from the water supply source such as a water pipe to the dilution water tank 17, 105a is a pipe for supplying the dilution water w4 from the dilution water tank 17 to the electrolytic cell 14 by the pump P3, Reference numeral 105b denotes a pipe for supplying a high concentration saline solution close to or close to a saturated concentration from an unillustrated saline solution tank. In the example of FIG. 10, the two pipes 105a and 105b are combined and connected to the electrolytic cell 14, but may be connected separately as in this example.

  In addition, the connection portion of the pipe 109 to the dilution water tank 17 is opened and closed as the float 17a moves up and down according to the water level of the dilution water tank 17, thereby keeping the water level of the dilution water tank 17 within a certain range. A float valve (not shown) is provided.

  When the dilution water tank 17 is installed on the electrolytic tank 14 as described above and the dilution water w4 is once stored in the dilution water tank 17, and then supplied to the electrolytic tank 14 by the pump P3, the unit and the water supply source The amount of the dilution water w4 can always be stabilized regardless of the positional relationship with the water pressure or the water pressure of the water supply source.

  The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims.

A water treatment apparatus according to an embodiment of the present invention is connected to a drinking water supply tank installed on the roof of a building or a condominium, for use in sterilization of water and purification in the supply tank. It is a figure simplified and shown. It is a front view which shows substance piping of the water treatment apparatus 1 of FIG. It is sectional drawing which shows an example of the internal structure of a filter among the water treatment apparatuses of the said example. FIGS. 2B and 2C are sectional views showing an example of the internal structure of the gas vent valve in the water treatment apparatus of the above example. It is a block diagram which shows the electrical structure of the water treatment apparatus of the said example. It is a flowchart which shows the flow at the time of normal driving | operation of the water treatment apparatus of the said example. FIGS. 7A to 7C are flowcharts showing the flow of a subroutine in the flowchart of FIG. It is a perspective view which shows an example of an exterior cover for accommodating the water treatment apparatus of the said example. FIG. 5A shows a configuration for using a water treatment apparatus according to another embodiment of the present invention as a supply source for supplying water having a sterilizing action as a sterilizing agent to a water tank such as a pool or a bathtub. The front view and the figure (b) which are shown are the left side views of the water treatment apparatus of the said example. It is sectional drawing which shows the internal structure of an electrolytic vessel among the water treatment apparatuses of the said example. FIGS. 4A and 4B are plan views showing the positional relationship between the installation position of the pump and the water supply pipe in the second space in the water treatment apparatus of the above example. It is the schematic which shows the modification which arrange | positioned the dilution water tank for storing the dilution water supplied to an electrolytic cell directly on 1st space.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water treatment apparatus 11 Electrolytic treatment means 12 Filter 13 Automatic degassing valve 14 Electrolyzer 15 Frame 15a 1st space 15b 2nd space 30 Control means 100 Treatment water channel 104 Water supply piping P1 Circulation pump P2 Pump 2 Water supply tank w1 , W2, w3 water

Claims (6)

A water treatment device used by connecting to a water tank,
An electrolytic cell for energizing the water to perform electrolytic treatment;
A pump for supplying water electrolyzed in the electrolysis tank to the water tank;
Water supply piping from the electrolytic cell to the pump;
A frame for accommodating these members and unitizing them,
Dividing the frame into a first space and a second space immediately below it,
A water treatment apparatus characterized in that an electrolytic cell is accommodated in a first space, and a pump and a water supply pipe are accommodated in a second space.   The water treatment apparatus according to claim 1, wherein a plurality of installation positions of the pump for installing the pump in different directions and positions are provided in the second space.   The water treatment apparatus according to claim 2, wherein a plurality of pipe connection portions corresponding to installation positions of the plurality of pumps are provided in the water supply pipe.   The electrolytic tank is provided with a water storage tank for storing the electrolyzed water, and the water supply pipe is connected to the water storage tank with the water inlet of the water supply pipe protruding vertically upward from the bottom surface of the water storage tank. The water treatment apparatus according to claim 1.   A water level sensor is provided to detect that the water level of the water tank has reached a preset full water level or drought level, and the drought level is set vertically above the water inlet of the water supply pipe. The water treatment apparatus according to claim 4.   The water treatment apparatus according to claim 1, wherein a dilution water tank for storing dilution water to be supplied to the electrolytic cell is disposed immediately above the first space.