JP2010117073A - Bath water dirt decomposition device and water heater with reheating function including the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a bath water dirt decomposition device easily maintaining clean bath water. <P>SOLUTION: The bath water dirt decomposition device 100 is constituted by using a positive electrode and a negative electrode arranged within piping (return pipe 70b) for reheating in a water heater 130 with a reheating function for taking out the bath water 150a from a bathtub 150, heating the bath water 150a and then, returning it to the bathtub 150 and a power source 91 for applying voltage to the positive electrode and negative electrode. By discharge generated between the positive electrode and negative electrode by applying predetermined voltage from the power source 91 to the positive electrode and negative electrode, dirt in the bath water 150a is decomposed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bath water dirt decomposing apparatus capable of decomposing dirt contained in bath water and dirt attached to piping connected to a bathtub, and a hot water supply device with a chasing function provided with the same.

  In a water heater with a reheating function that can recharge bath water in a bathtub with a heat exchanger that uses hot water stored in a hot water storage tank as a heat source, dirt components such as sebum and keratin that have been washed away from the human body by the bath water are removed from the bathtub. It circulates again to the bathtub through the return pipe for tracking, the heat exchanger for tracking, and the return pipe for tracking. For this reason, the above-mentioned dirt component inevitably adheres to and accumulates on the inner surface of the reheating pipe (forward pipe, return pipe), the inner surface of the reheating heat exchanger, and the inner surface of the bathtub. If the amount of dirt components attached to the inner surface of the pipe or the heat exchanger increases to a certain extent, the dirt components flow out into the bathtub when chasing and pollute the bath water in the bathtub, or Rhodotorula bacteria etc. It breeds to form slimy surface deposits. In addition, dirt on the inner surface of the heat exchanger for chasing reduces the heat exchange efficiency.

  The dirt components deposited on the inner surface of the pipe and the inner surface of the heat exchanger, and the bacteria that have propagated in the soil components, can be washed away using a commercially available foaming detergent, Therefore, it is preferable to remove dirt components and bacteria without using a cleaning agent as much as possible, and in the industrial field, a cleaning apparatus for removing dirt by microbubbles has been developed. For example, in Patent Document 1, a washing tank containing washing water, a hanger for placing an object to be washed in the washing tank, and washing water and gas are mixed to generate a flow containing a large number of microbubbles. And a cleaning device including an injector for injecting the flow onto an object to be cleaned. In this cleaning apparatus, an overflow system is provided as needed to accumulate dirt (oils and fats) separated from an object to be cleaned by washing in an overflow tank and return clean water after separating the dirt back to the washing tank.

JP 2007-136275 A

  When the method described in Patent Document 1 is applied to remove dirt components and bacteria (hereinafter collectively referred to as “dirt”) in the bath water, the bath water in which the dirt floats will overflow, which saves hot water. Undesirable from the point of view. Of course, if you provide an overflow system that stores overflowed bath water in the overflow tank and returns the clean bath water after separating dirt back to the bathtub, it will lead to savings in hot water. It is difficult. In addition, when keeping the inner surface of the piping for reheating and the inner surface of the heat exchanger clean, dirt is prevented from flowing into the bathtub and reattaching to the body of the bather. It is desirable to do.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to obtain a simple bath water stain decomposing apparatus that facilitates cleaning of bath water and a hot water storage type water heater provided with the same.

  The bath water dirt decomposing apparatus of the present invention is a bath water dirt decomposing apparatus that is attached to a pipe for reheating in a hot water heater with a reheating function that takes out the bath water from the bathtub and heats it and then returns it to the bathtub. A plus electrode and a minus electrode arranged in the pipe for use, and a power supply unit that applies a voltage to the plus electrode and the minus electrode to generate a discharge between the plus electrode and the minus electrode. The dirt in the bath water flowing through the pipe is decomposed by electric discharge.

  The bath water dirt decomposing apparatus of the present invention discharges dirt components and bacteria in the bath water circulating again from the bathtub to the bathtub through the follow-up pipe for reheating, the heat exchanger for reheating, and the return pipe for reheating. Therefore, the apparatus configuration and its use are simple and the bath water can be easily cleaned.

  Hereinafter, embodiments of the bath water dirt decomposing apparatus and the water heater with a chase function according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments described below.

Embodiment 1 FIG.
FIG. 1 is a schematic view showing an example of a hot water heater with a reheating function according to the present invention. The water heater 130 with a reheating function shown in the figure has a function of boiling low-temperature water such as city water into hot water with a heat source device and supplying hot water to a desired location, and a function of reheating the bath water 150a in the bathtub 150. The hot water supply device 130 with the chasing function includes a heat pump unit 10, a tank unit 110, and a control device 120. Hereinafter, each component of the hot water heater 130 with a chasing function will be described.

The heat pump unit 10 includes a compressor 1 that compresses refrigerant, a heat exchanger 3 for boiling, an expansion valve 5, an evaporator 7, and a refrigeration pipe 9 that connects these in an annular shape. It has a cycle system and functions as a heat source machine. In the above refrigeration cycle system, a refrigerant such as carbon dioxide is compressed by the compressor 1 to become high temperature and high pressure, and then radiates heat by the boiling heat exchanger 3, depressurizes by the expansion valve 5, and absorbs heat by the evaporator 7. As a result, it enters a gas state and is sucked into the compressor 1. When carbon dioxide is used as the refrigerant, it is preferable to operate on the high pressure side under conditions that exceed the critical pressure of the carbon dioxide. The refrigeration cycle system is housed in the unit case UC _1.

  On the other hand, the tank unit 110 includes a hot water storage tank 20, a water supply line 30, a hot water circulation line 40, a hot water supply line 50, a primary side circulation line 60, a secondary side circulation line 70, and a reheating heat exchanger 80. , And a bath water dirt decomposing apparatus 100.

  The hot water storage tank 20 is a stacked hot water storage tank that stores the low-temperature water supplied from the water supply pipe 30 and the hot water boiled by the heat pump unit 10. Below the hot water storage tank 20, a water inlet 20a to which the water supply pipe 30 is connected and a water outlet 20b to which the forward pipe 40a of the hot water circulation pipe 40 is connected are provided. In the upper part of the tank 20, a hot water inlet 20c to which the return pipe 40b of the hot water storage circulation line 40 is connected and a hot water outlet 20d to which the hot water supply pipe 50 is connected are provided. The hot water storage tank 20 is always kept full.

  The water supply pipe 30 is a pipe that supplies low-temperature water such as city water to the hot water storage tank 20, the hot water supply pipe 50, and a predetermined hot water supply destination. The first to third water supply pipe sections 30a to 30c and the pressure reducing valve ( (Not shown). The first water supply pipe section 30a connects a water source (not shown) such as a water supply and the water introduction port 20a of the hot water storage tank 20, and the second water supply pipe section 30b is branched from the first water supply pipe section 30a. The pipe part 30a is connected to mixing valves 45a and 45b described later, and the third water supply pipe part 30c is branched from the first water supply pipe part 30a to connect the first water supply pipe part 30a and a predetermined hot water supply destination. In the illustrated example, one hot water tap 160 is shown as an example of a hot water supply destination. The pressure reducing valve is provided upstream of the branch point of the third water supply pipe part 30c in the first water supply pipe part 30a, and reduces the water pressure of the low-temperature water from the water source to a predetermined value. In FIG. 1, the flow direction of the low temperature water in the 1st water supply pipe part 30a is shown by the solid line arrow.

  The hot water storage circulation line 40 is a pipe that reaches the hot water inlet 20c of the hot water storage tank 20 from the water outlet 20b of the hot water storage tank 20 through the boiling heat exchanger 3 in the heat pump unit 10, and is a three-way valve. 33, a forward pipe 40a provided with a hot water storage water pump 35, a return pipe 40b, and a bypass pipe 40c. The forward pipe 40a connects the water outlet 20b and the boiling heat exchanger 3 and the return pipe 40b connects the boiling heat exchanger 3 and the hot water inlet 20c. The bypass pipe 40c branches from the forward pipe 40a by a three-way valve 33 provided on the upstream side of the boiling heat exchanger 3 in the forward pipe 40a, and connects the forward pipe 40a and the return pipe 40b. During the freeze prevention operation, water that has flowed from the hot water storage tank 20 into the forward pipe 40a flows through the bypass pipe 40c to the return pipe 40b. In order to enable a boiling operation for boiling hot water by the boiling heat exchanger 3 and the antifreezing operation, a hot water storage water feed pump 35 is provided upstream of the three-way valve 33 in the forward pipe 40a.

  The hot water supply pipe 50 prepares hot water at a predetermined temperature by mixing the hot water stored in the hot water storage tank 20 and the low temperature water from the water supply pipe 30 with the first mixing valve 45a or the second mixing valve 45b. 1 to the third hot water supply pipe portions 50a to 50c in addition to the first mixing valve 45a and the second mixing valve 45b. have. The first hot water supply pipe section 50a connects the hot water outlet 20d of the hot water storage tank 20 to the first and second mixing valves 45a and 45b, and the second hot water supply pipe section 50b is connected to the first mixing valve 45a and the secondary side circulation conduit 70. The third hot water supply pipe portion 50c connects the second mixing valve 45b and the hot water tap 160. In FIG. 1, the outflow direction of the hot water from the hot water tap 160 is indicated by a dashed arrow.

  The primary-side circulation pipe 60 is a pipe that reaches the lower part of the hot water storage tank 20 from the hot water outlet 20d of the hot water storage tank 20 via the reheating heat exchanger 80, and includes the forward pipe 60a and the primary side water supply pump 55. And a return pipe 60b. The forward pipe 60a connects the hot water outlet 20d of the hot water tank 20 and the hot water inlet 80a above the reheating heat exchanger 80, and the return pipe 60b connects the hot water outlet 80b below the reheating heat exchanger 80 and the hot water tank. Connect the bottom of 20. In the illustrated example, a predetermined section on the hot water storage tank 20 side in the first hot water supply pipe section 50a also serves as a section on the hot water storage tank side in the forward pipe 60a.

  The secondary-side circulation pipeline 70 is a pipeline that returns from the bathtub 150 to the bathtub 150 via the reheating heat exchanger 80, and the return pipe 70a provided with the secondary-side water pump 65 and the return pipe 70b. The forward pipe 70 a connects the bathtub 150 and the bath water inlet 80 c below the reheating heat exchanger 80, and the return pipe 70 b connects the bath water outlet 80 d above the reheating heat exchanger 80 and the bathtub 150.

  The reheating heat exchanger 80 heats the bath water 150a by performing heat exchange between the hot water flowing through the primary side circulation line 60 and the bath water 150a flowing through the secondary side circulation line 70, In the illustrated example, a plate-type water-water heat exchanger in which a plurality of heat transfer plates are stacked in the height direction of the heating heat exchanger 80 is used. In order to be able to connect each of the primary side circulation line 60 and the secondary side circulation line 70, the hot water inlet 80 a and the bath water outlet 80 d described above are provided above the reheating heat exchanger 80. Further, the above-described hot water outlet 80b and bath water inlet 80c are provided in the lower part. In the reheating heat exchanger 80 having the inlets 80a and 80c and the outlets 80b and 80d, the upper part becomes higher than the lower part during the reheating operation. It is easy to lower the temperature of the returning warm water. For this reason, by using a plate-type heat exchanger having a high heat exchange capacity as the reheating heat exchanger 80, even when a reheating operation is performed in a state where a considerable amount of heat is accumulated in the hot water storage tank 20. It becomes easy to keep the water stored in the lower part of the hot water storage tank 20 at a low temperature.

  The bath water dirt decomposing apparatus 100 is an apparatus that cleans the bath water 150a by decomposing the dirt components and bacteria in the bath water 150a flowing through the secondary circulation circuit 70 into harmless and extremely fine organic substances by discharge. It is included in the bath water dirt decomposing apparatus of the present invention. The illustrated bath water dirt decomposing apparatus 100 includes a dirt decomposing part 90A having a plus electrode and a minus electrode (both not shown) arranged in the return pipe 70b, and a plus electrode and a minus electrode of the dirt decomposing part 90A. And a power source control unit 92 for controlling the output operation of the power source unit 91. The power source unit 91 generates a discharge between the positive electrode and the negative electrode. Further, an ejector portion 93a that is attached to the forward tube 70a and generates micro bubbles in the bath water 150a flowing through the forward tube 70a, a gas introduction tube 93b connected to the ejector portion 93a, and the gas introduction tube 93b A check valve 93c provided on the ejector portion 93a side to prevent the bath water 150a from flowing into the gas introduction pipe 93b, and an air supplied to the gas introduction pipe 93b provided on the gas introduction port side of the gas introduction pipe 93b. There is also provided a microbubble generator 93 having an electromagnetic valve 93d for controlling the inflow of water.

Of the above-described components constituting the tank unit 110, the remaining components excluding the water supply conduit 30, hot water storage circulation conduit 40, hot water supply conduit 50, and secondary side circulation conduit 70 are unit cases. It is stored in UC ₂ . A part of each of the water supply pipe 30, the hot water storage circulation pipe 40, the hot water supply pipe 50, and the secondary side circulation pipe 70 extends to the outside of the unit case UC ₂ .

The control device 120 includes a control device main body 120a disposed in the unit case UC ₂ and a remote controller 120b disposed in a kitchen, a bathroom, or the like and wired or wirelessly connected to the control device main body 120a. Yes. The controller main body 120a includes a heat pump unit 10, a three-way valve 33, a hot water storage water pump 35, a first mixing valve 45a, a second mixing valve 45b, a primary side water pump 55, a secondary side water pump 65, a power control unit 92, These operations are controlled in accordance with information and commands input by the user from the remote controller 120 connected to the electromagnetic valve 93d and functioning as an input device of the control device main body 120a.

  Therefore, the hot water heater 130 with a chasing function operates based on the above-described information, instructions, etc. input by the user from the remote controller 120b. For example, when the boiling start time input by the user from the remote controller 120b is reached, the heat pump unit 10 and the hot water circulation pump 35 are activated under the control of the control device 120, and the boiling operation is started. This is continued until it is determined from the detection result of the temperature sensor (not shown) that a predetermined amount of hot water is stored in the hot water storage tank 20. During this time, low-temperature water flows from the water outlet 20b at the lower part of the hot water storage tank 20 into the hot water circulation circuit 40, is heated to hot water by the heat pump unit 10, and is supplied to the hot water storage tank 20 from the hot water inlet 20c at the upper part of the hot water storage tank 20. Returned.

  When the user inputs a chasing operation start command from the remote controller 120b, the primary side water pump 55 and the secondary side water pump 65 are activated under the control of the control device 120, and the chasing operation is started. Then, the bath water dirt decomposing apparatus 100 is activated and cleaning of the bath water 150a is started. This chasing operation is continued until, for example, it is determined from the detection result of a temperature sensor (not shown) arranged in the return pipe 70b that the bath water 150a in the bathtub 150 is heated to a predetermined temperature.

  While the reheating operation is performed, hot water flows from the hot water outlet 20d at the upper part of the hot water storage tank 20 into the primary circulation line 60, while the bath water 150a flows from the bathtub 150 into the secondary circulation line 70. Then, heat is exchanged between the hot water flowing through the primary side circulation pipe 60 and the bath water 150a flowing through the secondary side circulation pipe 70 by the reheating heat exchanger 80 to heat the bath water 150a. Further, the microbubble generator 93 generates a large number of microbubbles in the bath water 150a in the forward pipe 70a, and the microbubbles are heated in the forward pipe 70a in the process of flowing through the secondary circulation circuit 70. The dirt components and bacteria in the exchanger 80 and the return pipe 70b are adsorbed, and the dirt components and bacteria adsorbed to the microbubbles are decomposed into harmless and extremely fine organic substances by the discharge in the dirt decomposing unit 90A. Water 150a is cleaned. Hereinafter, the structure of the dirt decomposing unit 90A and the decomposition of the dirt by the dirt decomposing unit 90A will be described in detail with reference to FIGS.

  FIG. 2 is a perspective view schematically showing a dirt decomposing unit in the bath water dirt decomposing apparatus constituting the hot water supply device with a chasing function shown in FIG. 1. As shown in the figure, the dirt decomposing portion 90A has a flat electrode positive electrode 83a (meaning an electrode having a positive polarity when decomposing dirt; the same applies hereinafter) and a negative electrode 85a (positive polarity when degrading dirt). And the same shall apply hereinafter)) are arranged alternately at regular intervals in the pipe radial direction of the return pipe 70b. Each of the plus electrode 83a and the minus electrode 85a is an electrode made of titanium, each plus electrode 83a is connected to the plus terminal 91a of the power source 91 (see FIG. 1) of the bath water dirt decomposing apparatus 100, and each minus electrode 85a is a power source. It is connected to the minus terminal 91b of the part 91. In FIG. 2, the flow direction of the bath water 150a (see FIG. 1) in the return pipe 70b is indicated by a white arrow.

  Generally, microbubbles are negatively charged and adsorb dirt components and bacteria that are positively charged. For this reason, if a large number of micro bubbles are generated in the bath water 150a during the reheating operation by the micro bubble generating part 93 provided in the outward tube 70a, the inner surface of the outward tube 70a, the reheating heat exchanger 80 (see FIG. 1). The dirt components (keratin, sebum, etc.) that adhere to the inner surface of the return pipe 70b and the inner surface of the return pipe 70b and the bacteria that have propagated in the deposited dirt component adsorb to the microbubbles.

  FIG. 3 is a conceptual diagram schematically showing the decomposition of dirt by the dirt decomposition unit shown in FIG. As shown in the figure, the microbubbles MB adsorbed with the dirt G are carried to the dirt decomposing unit 90A along the flow of the bath water 150a, and from the plus terminal 91a and the minus terminal 91b of the power source unit 91 (see FIG. 1). By pulse discharge generated between the plus electrode 83a and the minus electrode 85a to which a predetermined pulse discharge voltage is applied, it is decomposed into harmless and extremely small organic matter Or. At this time, the surface of each of the positive electrode 83a and the negative electrode 85a and the periphery thereof is a discharge space. The pulse discharge is continuously performed, for example, during the follow-up operation. As a result of decomposing the dirt G in the bath water 150a into the organic substance Or by the above discharge, the bath water 150a is cleaned.

  In FIG. 3, each plus electrode 83a is drawn with a solid line, and each minus electrode 85a is drawn with a broken line. In addition, each of the conductive wire connecting the positive terminal 91a and each positive electrode 83a and the conductive wire connecting the negative terminal 91b and each negative electrode 85a is drawn with a one-dot chain line for convenience. The bathing water 150a is smudged and the flowing direction of the bathing water 150a is indicated by a white arrow. These points are the same in FIGS. 5, 6, 8, 9, 11, 12, 14, 15, and 17 referred to in Embodiments 3 to 9 described later.

  The interval between the plus electrode 83a and the minus electrode 83b in the above-described dirt decomposition unit 90A is set within a range of about 5 mm to 20 mm, and the pulse discharge voltage applied from the power supply unit 91 to each of the electrodes 83a and 83b is set within a range of about 1 kV to 30 kV. It was confirmed that the soil G was decomposed into harmless and extremely fine organic matter Or. The effect of degrading the dirt G by the dirt decomposing unit 90A was not significantly different even when the frequency of the pulse discharge voltage was changed from 100 Hz to 100 kHz. Further, the polarities of all the electrodes 83a and 85a are kept positive, the micro bubbles MB are electrically attracted to the electrodes 83a and 85a, and the density of the micro bubbles BM on the surfaces of the individual electrodes 83a and 85a is increased. Even if the polarity of 85a is reversed to minus and the pulse discharge is performed instantaneously, the same dirt decomposition effect can be obtained.

  The bath water dirt decomposing apparatus 100 (see FIG. 1) for decomposing the dirt G as described above is simple in apparatus configuration and use, and has a hot water supply device 130 with a chasing function provided with the bath water dirt decomposing apparatus 100. Then, the bath water 150a is automatically cleaned during the chasing operation. The bath water 150a can be easily cleaned.

Embodiment 2. FIG.
FIG. 4 is a perspective view schematically showing a dirt decomposing portion in another bath water dirt decomposing apparatus of the present invention. The dirt decomposing portion 90B shown in the figure has a structure in which cylindrical positive electrodes 83b and negative electrodes 85b are alternately arranged in a concentric manner at regular intervals. Each of the plus electrode 83b and the minus electrode 85b is obtained by rolling a titanium thin plate, a tungsten thin plate, a stainless steel thin plate, a metal mesh or the like into a cylindrical shape, and each positive electrode 83b is a power supply unit (not shown) in a bath water dirt decomposing apparatus. ) And the minus electrodes 85b are connected to the minus terminal 91b of the power supply unit. When the surface of the base material coated with platinum, gold, silver or the like is used as the positive electrode 83b, the deterioration of the positive electrode 83b due to discharge is suppressed, and the electrode life is greatly extended. In addition to the above-described dirt decomposing unit 90B, the bath water dirt decomposing apparatus not shown in the figure performs a power supply unit that generates a discharge by applying a voltage to the positive electrode 83b and the negative electrode 85b, and an output operation of the power supply unit. And a power control unit for controlling.

FIG. 5 is a conceptual diagram schematically showing an example of a usage pattern of the dirt decomposing unit shown in FIG. The example shown in the figure is a water heater with a reheating function in which a return pipe 70b of a secondary side circulation circuit is branched into a first flow path 70b ₁ and a second flow path 70b ₂ over a certain interval in the middle. 4 is an example in which the dirt decomposing unit 90B is arranged, and the hot water heater with a chasing function has the same configuration as the hot water heater with chasing function 130 shown in FIG. 1 except for the configuration of the return pipe 70b and the dirt decomposing unit. have.

The end portion on the bathtub side of the first flow path 70b ₁ is branched into two, one of which is stopped by the electrode holder portion 67a which also serves as a water stop cock, and the other joins the second flow path 70b _2. ing. An electromagnetic valve 68a having a motor M is provided on the upstream side of the first flow path 70b ₁ , and an electromagnetic valve 68b having a motor M is provided on the downstream side. In a section sandwiched between these two electromagnetic valves 68a and 68b, The electrodes 83b and 85b of the dirt decomposing portion 90B are held and arranged by the electrode holder portion 67a. The second flow path 70b ₂ is provided with an electromagnetic valve 68c having a motor M. The first flow path 70b ₁ and the second flow path 70b ₂ merge with each other on the downstream side of the electromagnetic valves 68b and 68c.

During the chasing operation, for example, each of the solenoid valves 68a and 68b is opened and the solenoid valve 68c is closed under the control of the controller for the hot water heater with chasing function. The bath water 150a flows through the first flow path 70b ₁ without flowing through the second flow path 70b ₂ of the return pipe 70b and returns to the bathtub. As shown in the upper diagram in FIG. 5, the microbubbles MB on which the dirt G is adsorbed are carried on the flow of the bath water 150a and carried to the dirt decomposition unit 90B. Then, by applying a pulse discharge voltage of, for example, 10 kV to each plus electrode 83b and each minus electrode 85b, the pulse discharge generated between the plus electrode 83b and the minus electrode 85b is decomposed into harmless and extremely small organic substances. . The pulse discharge is continuously performed, for example, during the follow-up operation. As a result of decomposing the dirt G in the bath water 150a into the organic substance Or, the bath water 150a is cleaned.

When the surface of each electrode 83a, 83b deteriorates due to the discharge phenomenon and the performance of the bath water dirt decomposing apparatus is lowered and the electrodes 83b, 85b need to be replaced, as shown in the lower diagram of FIG. to, for example, an electromagnetic valve 68a under the control of the control device of the reheating function water heaters, by opening the electromagnetic valve 68c along with to close the respective 68b, bath water 150a is the first passage 70b ₁ flow to flow a second flow path 70b ₂ without. By switching the flow path of the bath water 150a in this way, the electrodes 83b and 85b can be taken out from the return pipe 70b by removing the electrode holder portion 67a from the first flow path 70b ₁ even during the chasing operation. Can be easily replaced. Of course, when the electrodes 83b and 85b are taken out from the return tube 70b, the application of the pulse discharge voltage to the electrodes 83b and 85b is interrupted.

  FIG. 6 is a conceptual diagram schematically showing another example of the usage pattern of the dirt decomposing unit shown in FIG. In the example shown in the figure, only the voltage application form to each electrode of the soil decomposition unit is different from the example shown in FIG. 5. First, all the electrodes before the soil G in the bath water 150a is decomposed by electric discharge. The polarity of 83b and 85b is made positive. As a result, as shown in the upper diagram in FIG. 6, the microbubbles MB adsorbed with the dirt G are electrically attracted to the electrodes 83b and 85b, and the density of the microbubbles BM on the surfaces of the individual electrodes 83b and 85b. To increase.

  Thereafter, as shown in the lower diagram in FIG. 6, the polarity of the terminal 91b in the power supply unit of the bath water dirt decomposing apparatus is inverted to minus, and the pulse discharge voltage is applied to each plus electrode 83b and each minus electrode 85b. Apply. As a result, a pulse discharge is generated between the plus electrode 83b and the minus electrode 85b, and the dirt G adsorbed on the microbubbles MB electrically attracted to the electrodes 83b and 85b is instantly turned into harmless and extremely fine organic matter. Disassemble. The operation of making all the electrodes 83b and 85b positive and the pulse discharge operation are alternately and intermittently performed during the follow-up operation. When the dirt G is decomposed in this way, the total application time of the pulse discharge voltage to the electrodes 83b and 85b is shortened as compared with the case where the dirt G is decomposed by continuously performing pulse discharge. The energy consumption of the decomposition apparatus is reduced, and the running cost is suppressed.

Embodiment 3 FIG.
FIG. 7 is a perspective view schematically showing a soil decomposing portion in still another bath water soil decomposing apparatus of the present invention. The dirt decomposing portion 90C shown in the figure has a structure in which positive electrodes 83c and negative electrodes 85c having a mesh shape are alternately arranged at regular intervals. Each of the plus electrode 83c and the minus electrode 85c is made of metal, or is provided with conductivity by attaching an adsorbent, an oxidation catalyst, or the like to the surface of a substrate made of ceramics or synthetic resin. The plus electrode 83c is connected to a plus terminal 91a of a power source (not shown) in the bath water dirt decomposing apparatus, and each minus electrode 85c is connected to a minus terminal 91b of the power source. In addition to the above-described soil decomposing unit 90C, the bath water soil decomposing device, which is not shown, has a power source unit that generates a discharge by applying a voltage to the positive electrode 83c and the negative electrode 85c, and an output operation of the power source unit. And a power control unit for controlling.

FIG. 8 is a conceptual diagram schematically showing an example of a usage pattern of the dirt decomposing unit shown in FIG. Example shown in the figure, is branched to the return pipe 70b of the secondary-side circulation circuit and the first passage 70b ₁ over a predetermined section of the middle and the second flow path 70b _2, the first passage 70b ₁ and Each of the second flow paths 70b ₂ is divided into an upstream section and a downstream section, and the upstream section and the downstream section are connected to each flow path by the electrode holder portion 67b that also serves as a joint. It is an example which has arrange | positioned two dirt decomposition | disassembly parts 90C of FIG. The hot water heater with a chasing function has the same configuration as that of the hot water heater with chasing function shown in FIG. 1 except for the configurations of the return pipe 70b and the dirt decomposing unit.

The upstream side in the first passage 70b ₁ solenoid valve 68a is provided with a motor M, the electromagnetic valve 68b is provided with a motor M on the downstream side, the two electromagnetic valves 68a, sandwiched between the 68b An electrode holder portion 67b that also serves as a joint is provided in the section, and the electrodes 83c and 85c of the soil decomposition portion 90C are held by the electrode holder portion 67b. Similarly, on the upstream side in the second flow path 70b ₂ solenoid valve 68c is provided with a motor M, an electromagnetic valve 68d is provided with a motor M on the downstream side, the two electromagnetic valves 68c, by 68d An electrode holder portion 67b that also serves as a joint is provided in the sandwiched section, and the plus electrode 83c and the minus electrode 85c of the other soil decomposition portion 90C are held by the electrode holder portion 67b. Each of the plus electrode 83c and the minus electrode 85c in each dirt decomposition unit 90C extends in the flow path radial direction in the first flow path 70b ₁ or the second flow path 70b ₂ . The first flow path 70b ₁ and the second flow path 70b ₂ merge with each other on the downstream side of the electromagnetic valves 68b and 68d.

During the chasing operation, for example, the solenoid valves 68a and 68b are closed and the solenoid valves 68c and 68d are opened under the control of the control device for the hot water heater with chasing function. Bath water 150a is the first passage 70b ₁ of the return tube 70b is flows through the second flow path 70b ₂ without flowing back to the tub. As shown in the upper diagram in FIG. 8, microbubbles MB dirt G is adsorbed is carried dirt decomposition portion 90C of the second flow path 70b in ₂ on stream of bath water 150a, and each of the positive electrodes 83c By applying a pulse discharge voltage of 6 kV, for example, to each negative electrode 85c, the pulse discharge generated between the positive electrode 83c and the negative electrode 85c is decomposed into harmless and extremely small organic substances. As a result of decomposing the dirt G in the bath water 150a into the above organic substances, the bath water 150a is cleaned.

When the surface of each electrode 83c, 85c deteriorates due to the discharge phenomenon and the performance of the bath water dirt decomposing apparatus is lowered, and it is necessary to replace each electrode 83c, 85c, as shown in the lower diagram in FIG. For example, the solenoid valves 68a and 68b are opened and the solenoid valves 68c and 68d are closed under the control of the controller for the hot water heater with a reheating function. 70b ₂ does not flow but flows through the first flow path 70b ₁ . Thus switching the flow path of the bath water 150a, each by removing from the second flow path 70b ₂ each decomposition unit 90C even reheating during operation dirt electrode holder portion 67b of the second flow path 70b in ₂ The electrodes 83c and 85c can be taken out from the return pipe 70b and can be easily replaced.

Embodiment 4 FIG.
FIG. 9 is a conceptual diagram schematically showing another example of the usage pattern of the dirt decomposing unit shown in FIG. Example shown in the figure, is branched to the return pipe 70b of the secondary-side circulation circuit and the first passage 70b ₁ over a predetermined section of the middle and the second flow path 70b _2, the second flow path 70b ₂ upstream divided into the side of the section and the downstream section with connecting these sections in the electrode holder 67b, a second hot water pipe 50b of the hot water supply pipe path is connected to the upstream side of the second flow path 70b _2, an example in which the dirt decomposition section 90C of FIG. 7 in reheating function water heater is connected to the drain pipe 125 on the downstream side of the second flow path 70b _2.

  The hot water supply device with a chasing function in this example is shown in FIG. 1 except for the configurations of the return pipe 70b and the dirt decomposing part, the connection form of the second hot water supply pipe part 50b and the return pipe 70b, and the presence or absence of the drain pipe 125. It has the same configuration as the hot water heater 130 with the chasing function shown. In addition to the above-described dirt decomposing unit 90C, the bath water stain decomposing apparatus, which is not shown, has a power supply unit that generates a discharge by applying a voltage to the positive electrode 83c and the negative electrode 85c, and an output operation of the power supply unit. And a power control unit for controlling.

Solenoid valve 68a is provided with a motor M on the upstream side in the first passage 70b _1, the electromagnetic valve 68b is provided with a motor M on the downstream side. In addition, an electromagnetic valve 68c having a motor M is provided on the second flow path 70b ₂ where the first flow path 70b ₁ is branched, and an electromagnetic valve 68c having a motor M is provided on the merge side with the first flow path 70b _1. A valve 68d is provided, and an electrode holder portion 67b that also serves as a joint is provided in a section sandwiched between the two electromagnetic valves 68c and 68d, and the electrode holder portion 67b allows the plus electrode 83c and the minus electrode of the dirt decomposition portion 90C. 85c is held. Each electrode 83c of the dirty decomposition unit 90C, 85c extend in a passage diameter direction of the second flow path 70b _2. The first flow path 70b ₁ and the second flow path 70b ₂ merge with each other on the downstream side of the electromagnetic valves 68b and 68d.

The second hot water supply pipe section 50b is joined to the second flow path 70b ₂ on the downstream side of the solenoid valve 68c, the electromagnetic valve 68e is provided with a motor M on the downstream side in the second supply pipe portion 50b It has been. The drain pipe 125 is branched from the second flow path 70b ₂ on the upstream side of the electromagnetic valve 68d, and an electromagnetic valve 68f having a motor M is provided on the upstream side of the drain pipe 125.

During the chasing operation, for example, the solenoid valves 68a, 68b, 68e, and 68f are closed and the solenoid valves 68c and 68d are each opened under the control of the controller for the hot water heater with chasing function. The bath water 150a flows through the second flow path 70b ₂ without flowing through the first flow path 70b ₁ of the return pipe 70b and returns to the bathtub. No hot water flows from the second hot water supply pipe portion 50b to the second flow path 70b _2. In addition, before the dirt G in the bath water 150a is decomposed by electric discharge, the polarities of the terminals 91a and 91b of the power supply unit in the bath water dirt decomposing apparatus are made positive so that the polarities of all the electrodes 83c and 85c are changed. Make it plus. As a result, as shown in the upper diagram in FIG. 9, the microbubbles MB adsorbed with the dirt G are electrically attracted to the electrodes 83c and 85c, and the density of the microbubbles BM on the surfaces of the individual electrodes 83c and 85c. To increase.

Thereafter, as shown in the lower diagram in FIG. 9, for example, each of the solenoid valves 68a and 68b is opened and the solenoid valves 68c and 68d are respectively controlled under the control of the control device of the hot water heater with a reheating function. And the flow path is switched so that the bath water 150a flows through the first flow path 70b ₁ and does not flow through the second flow path 70b ₂ and returns to the bathtub. The electromagnetic valve 68e, flows into the drain pipe 125 in hot water the via second passage 70b ₂ from the second hot water supply pipe portion 50b by opening the respective 68f. Further, the polarity of the terminal 91b of the power supply unit is inverted to minus and a pulse discharge voltage is applied to each plus electrode 83c and each minus electrode 85c. As a result, a pulse discharge is generated between the plus electrode 83c and the minus electrode 85c, and the dirt G adsorbed on the microbubbles MB electrically attracted to the electrodes 83c and 85c is instantly turned into harmless and extremely fine organic matter. Disassemble. As a result of decomposing the dirt G in the bath water 150a into the above organic substances, the bath water 150a is cleaned.

Harmless very small organic materials produced by the decomposition of dirt G is discharged to the drain pipe 125 riding hot water flow supplied from the second hot water supply pipe portion 50b in the second flow path 70b _2. Since the organic matter generated by the decomposition of the dirt G in the dirt decomposition unit 90C is prevented from flowing into the bathtub, the bath water 150a is further cleaned. In the lower drawing of FIG. 9, the flowing direction of the hot water from the second hot water supply pipe section 50b is indicated by a white broken arrow.

  When the solenoid valves 68a and 68b are closed and the solenoid valves 68c, 68d, 68e and 68f are opened, the polarities of all the electrodes 83c and 85c are made negative. The microbubbles MB electrically attracted to 85c can be detached from the electrodes 83c and 85c and discharged to the drain tube 125 while the dirt G is adsorbed.

Embodiment 5 FIG.
FIG. 10 is a perspective view schematically showing a soil decomposing portion in still another bath water soil decomposing apparatus of the present invention. The dirt decomposing portion 90D shown in the figure is attached to a hot water supply device with a chasing function in which a hollow disk-like large-diameter electrode holder portion 67d is formed on the return pipe 70b of the secondary side circulation conduit, and it includes the shaft portion 83d ₁ and shaft portion plus electrode 83d with the electrode portion 83d ₂ of the attached honeycomb structure 83d _1, and a mesh-like negative electrode (not shown). In the following description, the electrode portion having the honeycomb structure is referred to as “honeycomb structure electrode portion”.

The honeycomb structure electrode portion 83d ₂ is formed by supporting zeolite and an oxidation catalyst as adsorbents on the surface of a base material made of ceramics, synthetic resin, etc., and imparting conductivity to each of hexagonal holes. the axis of the H is shaped to deviate slightly from the longitudinal axis of the shaft portion 83d _1. The honeycomb structured electrode portions 83d _2, each hole H is held by the holder main body 67d ₁ in orientation at the electrode holder portion 67d which is a flow path for the bath water. At this time, the shaft portion 83d ₁ passes through the holder body 67d ₁ in the thickness direction. When the bath water flows into the return pipe 70b, the axis of each hole H in the honeycomb structure electrode portion 83d ₂ is slightly shifted from the longitudinal axis of the shaft portion 83d ₁ , so that the honeycomb has a speed corresponding to the flow rate of the bath water. The structural electrode portion 83d ₂ naturally rotates around the shaft portion 83d ₁ . The minus electrode is arranged on the inner upper portion of the cap 67d ₂ that is detachably mounted on the upper portion of the holder body 67d ₁ .

  FIG. 11 is a conceptual diagram schematically illustrating an example of a usage pattern of the dirt decomposing unit illustrated in FIG. 10. The example shown in the figure is an example in which the soil disassembling unit 90D of FIG. 10 is arranged in a water heater with a reheating function in which the electrode holder portion 67d described above is formed on the return pipe 70b of the secondary side circulation pipeline, The configuration of the hot water heater with a reheating function excluding each of the pipe 70b and the bath water dirt decomposing apparatus (not shown) is the same as that of the hot water heater 130 with a reheating function shown in FIG. Among the constituent elements shown in FIG. 11, those common to the constituent elements shown in FIG. 10 are given the same reference numerals as those used in FIG. 10, and description thereof is omitted. In addition to the above-described soil decomposing unit 90D, the bath water soil decomposing device not shown in the figure includes a power supply unit that applies a voltage to the positive electrode 83d and the negative electrode 85d in the soil decomposing unit 90D to generate a discharge, A power supply control unit that controls the output operation of the power supply unit.

As shown in the upper diagram in FIG. 11, at the same time as the chasing operation is started, a predetermined voltage is applied from the positive terminal 91a of the power supply unit to the positive electrode 83d in the bath water dirt decomposing apparatus, The polarity of the electrode 83d is kept positive. No voltage is applied to the negative electrode 85d. As a result, the micro bubbles MB on which the dirt G is adsorbed are electrically attracted to the plus electrode 83d, and the density of the micro bubbles BM on the surface of the plus electrode 83d is increased. In addition, since the bath water 150a flows through the return pipe 70b, the honeycomb structure electrode portion 83d ₂ naturally rotates at a speed of about one rotation per minute around the shaft portion 83d ₁ .

As shown in the lower diagram in FIG. 11, when the honeycomb structure electrode portion 83d ₂ is rotated halfway, a predetermined pulse discharge voltage is applied from the positive terminal 91a and the negative terminal 91b of the power supply portion to the dirt decomposition portion 90C. A pulse discharge is generated between the plus electrode 83d and the minus electrode 85d, and the dirt G adsorbed on the microbubbles MB is decomposed into harmless and extremely fine organic substances. For example, the pulse discharge is intermittently performed during the chasing operation. As a result of decomposing the dirt G in the bath water 150a into the above organic substances, the bath water 150a is cleaned. Note that the rotation amount of the honeycomb structure electrode portion 83d ₂ is detected by a rotary encoder (not shown), and based on the detection amount of the rotary encoder, the power control unit of the bath water dirt decomposing apparatus supplies each electrode 83d, The application timing of the pulse discharge voltage to 85d is determined.

Embodiment 6 FIG.
FIG. 12 is a schematic view showing a soil decomposing unit in still another bath water soil decomposing apparatus of the present invention. The soil decomposing unit 90E shown in the figure constitutes a bath water soil decomposing device (not shown) provided with an ultraviolet irradiation unit 95, and the soil decomposing unit 90E is a honeycomb structure electrode constituting the plus electrode 83e. point axis of the hexagonal each hole in the part 83e ₂ is substantially parallel to the longitudinal axis of the shaft portion 83e _1, and the shaft portion 83e ₁ driving unit 87, in particular is rotated by a motor honeycomb structure electrode portion Except for the fact that 83e ₂ rotates, it has the same configuration as the dirt decomposing portion 90D shown in FIG. However, the honeycomb structure electrode portion 83e ₂ is attached with zeolite as an adsorbent and platinum-supported titanium oxide as an oxidation catalyst.

The dirt decomposing portion 90E is attached to a hot water supply device with a chasing function in which a large-diameter electrode holder portion 67e having a hollow disk shape is formed in the return pipe 70b of the secondary-side circulation conduit. The holder portion 67e includes a holder main body 67e ₁ that rotatably holds the plus electrode 83e, and a cap 67e ₂ that is detachably attached to the upper portion of the holder main body 67e ₁ . An ultraviolet transmissive window W is formed at a predetermined position of the cap 67e ₂ , and the negative electrode 85e is disposed on the inner upper portion of the cap 67e ₂ . The configuration of the hot water heater with a tracking function excluding each of the return pipe 70b and the bath water dirt decomposing apparatus is the same as the configuration of the hot water heater with a tracking function 130 shown in FIG. In addition to the soil decomposing unit 90E and the ultraviolet irradiation unit 95, the bath water soil decomposing device (not shown) includes a power source unit that generates a discharge by applying a voltage to the positive electrode 83e and the negative electrode 85e, and the power source. And a power supply control unit for controlling the output operation of the unit.

As shown in the upper diagram in FIG. 12, at the same time as the chasing operation is started, a predetermined voltage is applied from the plus terminal 91a of the power supply unit to the plus electrode 83e in the bath water dirt decomposing apparatus, and plus The polarity of the electrode 83e is kept positive. No voltage is applied to the negative electrode 85e. As a result, the micro bubbles MB on which the dirt G is adsorbed are electrically attracted to the plus electrode 83e, and the density of the micro bubbles BM on the surface of the plus electrode 83e is increased. Further, the drive unit 87 is activated, and the honeycomb structure electrode unit 83e ₂ rotates slowly at a speed of about one rotation per hour around the shaft unit 83e ₁ .

As shown in the lower diagram in FIG. 12, when the honeycomb structure electrode portion 83e ₂ is rotated halfway, a predetermined value is supplied from the positive terminal 91a and the negative terminal 91b of the power supply unit to the soil decomposition unit 90E. The pulse discharge voltage is applied to generate a pulse discharge between the plus electrode 83e and the minus electrode 85e, and the dirt G in the bath water 150a is decomposed into harmless and extremely fine organic substances. As a result, the bath water 150a is cleaned. Further, the ultraviolet light source 95b of the ultraviolet irradiation unit 95 is turned on. In the figure, the ultraviolet light emitted from the ultraviolet light source 95b is represented by a solid line arrow.

Since the oxidation action of the oxidation catalyst in the honeycomb structure electrode portion 83e ₂ is promoted by the ultraviolet light from the ultraviolet light source 95b, the decomposition rate of the dirt G is lower than that in the case where the ultraviolet light is not irradiated under the usage pattern shown in the figure. Accordingly, the total application time of the pulse discharge voltage can be reduced to about 70%. Note that the rotation amount of the honeycomb structure electrode portion 83e ₂ is detected by a rotary encoder (not shown), and based on the detection amount of the rotary encoder, the power control unit of the bath water dirt decomposing apparatus supplies each electrode 83e, The application timing of the pulse discharge voltage to 85e is determined.

Embodiment 7 FIG.
FIG. 13 is a perspective view schematically showing a soil decomposing portion in still another bath water soil decomposing apparatus of the present invention. The dirt decomposing unit 90F shown in the figure has the same configuration as the dirt decomposing unit 90E shown in FIG. 12 except that it has two negative electrodes 85f. However, the honeycomb structure electrode portion 83f ₂ is attached with activated carbon as an adsorbent. In FIG. 13, the reference sign “83f” is attached to the plus electrode in the soil decomposition part 90F, the reference sign “83f ₁ ” is attached to the shaft part in the plus electrode 83f, and the honeycomb structure in the plus electrode 83f Reference numeral “83f ₂ ” is attached to the electrode portion.

The dirt decomposing unit 90F is attached to a hot water supply device with a chasing function in which a return electrode 70b of the secondary-side circulation conduit is formed with a hollow disk-like large-diameter electrode holder 67f. Electrode holder portion 67f shown, like the electrode holder portion 67d shown in FIG. 10, a holder main body 67f ₁ for rotatably holding the positive electrode 83f, is removably mounted on the upper part of the holder body 67f ₁ and a cap 67f _2. The cap 67f _2, a pipe 96b serving as inlet channel of the ozone water ozone water producing apparatus 96a is generated, and the drain pipe 125 as a discharge flow path of the ozone water is connected, in the cap 67f within ₂ one negative electrodes 85f at connection points between the pipe 96d of, also other negative electrodes 85f at connection points between the drain tube 125 in the cap 67f within ₂ are arranged. The ozone water generating device 96a and the pipe 96b constitute a bath water soil decomposing device together with the soil decomposing unit 90F.

  FIG. 14 is a conceptual diagram schematically showing an example of a usage pattern of the dirt decomposing unit shown in FIG. The example shown in the figure is an example in which the soil decomposition unit 90F of FIG. 13 is arranged in a hot water supply device with a reheating function in which the electrode holder portion 67f described above is formed in the return pipe 70b of the secondary side circulation pipeline. The configuration of the water heater with a reheating function excluding each of the pipe 70b, the bath water dirt decomposing apparatus (not shown), and the drain pipe 125 is the same as that of the water heater 130 with a reheating function shown in FIG. is there. Among the constituent elements shown in FIG. 14, those common to the constituent elements shown in FIG. 13 are denoted by the same reference numerals as those used in FIG. 13, and description thereof is omitted. The bath water dirt decomposing apparatus (not shown) is a power source that generates a discharge by applying a voltage to the plus electrode 83f and the minus electrode 85f in addition to the dirt decomposing unit 90F, the ozone water generating apparatus 96a, and the pipe 96b. And a power supply control unit that controls the output operation of the power supply unit.

As shown in the upper diagram in FIG. 14, at the same time as the chasing operation is started, a predetermined voltage is applied to the plus electrode 83f from the plus terminal 91a of the power supply unit in the bath water dirt decomposing apparatus, and plus The polarity of the electrode 83f is kept positive. No voltage is applied to the negative electrode 85f. As a result, the micro bubbles MB adsorbed with the dirt G are electrically attracted to the plus electrode 83f, and the density of the micro bubbles BM on the surface of the plus electrode 83f increases. The honeycomb structure electrode portion 83f ₂ rotates slowly at a speed of about one rotation per day around the shaft portion 83e ₁ .

As shown in the lower diagram of FIG. 14, when the honeycomb structure electrode portion 83e ₂ is rotated halfway, a predetermined pulse is supplied from each of the positive terminal 91a and the negative terminal 91b of the power source unit to the dirt decomposing unit 90F in the dirt decomposing apparatus. A discharge voltage is applied, and a pulse discharge is generated between the plus electrode 83e and the minus electrode 85e. When pulse discharge is started, ozone water OW is supplied from the ozone water generator 96a to the electrode holder 67f.

Together with the surface of the adsorbent of the honeycomb structured electrode portion 83e ₂ by the above ozone water OW it is cleaned, since the decomposition of organic matter in the honeycomb structure electrode portion 83e ₂ is promoted under the usage pattern shown Then, compared with the case where ozone water OW is not supplied, the decomposition rate of the dirt G is about twice as fast, and accordingly, the total application time of the pulse discharge voltage can be reduced to about half. The ozone water OW supplied to the electrode holder portion 67f is discharged to the drain pipe 125. In the lower diagram in FIG. 14, the flow direction of the ozone water OW is indicated by broken-line arrows. Note that the rotation amount of the honeycomb structure electrode portion 83f ₂ is detected by a rotary encoder (not shown), and based on the detection amount of the rotary encoder, the power supply control unit of the bath water dirt decomposing apparatus supplies each electrode 83f, The application timing of the pulse discharge voltage to 85f is determined.

Embodiment 8 FIG.
FIG. 15 is a schematic view showing a soil decomposing portion in still another bath water soil decomposing apparatus of the present invention. The soil decomposing unit 90G shown in the figure constitutes a bath water soil decomposing device (not shown) provided with a microbubble-containing water generator 97a, and the soil decomposing unit 90G constitutes a positive electrode 83g. except that the axis of the hexagonal each hole in the honeycomb structure electrode portion 83 g ₂ is slightly inclined from the longitudinal axis of the shaft portion 83 g _1, and the shaft portion 83 g ₁ a that it does not have the motor which rotates respectively, The structure is the same as that of the dirt decomposing portion 90F shown in FIG.

  The dirt decomposing portion 90G is attached to a water heater with a reheating function in which a large-diameter electrode holder portion 67g having a hollow disk shape is formed in the return pipe 70b of the secondary-side circulation conduit, The holder portion 67g has a connection port with the pipe 97b that becomes an inflow path of the microbubble-containing water generated by the microbubble-containing water generator 97a and a connection port with the drain pipe 125 that becomes the outflow path of the microbubble-containing water. Except for the large diameter, it has the same configuration as the electrode holder portion 67f shown in FIG. The configuration of the hot water heater with a tracking function excluding each of the return pipe 70b and the bath water dirt decomposing apparatus is the same as the configuration of the hot water heater with a tracking function 130 shown in FIG. The bath water dirt decomposing apparatus (not shown) generates a discharge by applying a voltage to the plus electrode 83g and the minus electrode 85g in addition to the dirt decomposing unit 90G, the fine bubble-containing water generator 97a, and the pipe 97b. And a power supply control unit that controls the output operation of the power supply unit.

As shown in the upper diagram in FIG. 15, at the same time as the chasing operation is started, a predetermined voltage is applied from the plus terminal 91a of the power supply unit to the plus electrode 83g in the bath water dirt decomposing apparatus, The polarity of the electrode 83g is kept positive. No voltage is applied to the negative electrode 85g. As a result, the fine bubbles MB adsorbed with the dirt G are electrically attracted to the positive electrode 83g, and the density of the fine bubbles BM on the surface of the positive electrode 83g is increased. Further, since the bath water 150a flows through the return pipe 70b, the honeycomb structure electrode portion 83g ₂ naturally rotates at a speed of about one rotation per minute around the shaft portion 83g ₁ .

As shown in the lower diagram in FIG. 15, when the honeycomb structure electrode portion 83g ₂ is rotated halfway, a predetermined value is supplied from the positive terminal 91a and the negative terminal 91b of the power source unit to the soil decomposition unit 90G in the bath water soil decomposition device. The pulse discharge voltage is applied and a pulse discharge is generated between the positive electrode 83g and each negative electrode 85g, and the dirt G adsorbed on the microbubbles MB is harmlessly decomposed into extremely fine organic substances. As a result, the bath water 150a is cleaned.

Moreover, when pulse discharge is started, the microbubble containing water BW containing many microbubbles mb is supplied to the electrode holder part 67g from the microbubble containing water generator 97a. The microbubble-containing water BW is mainly used for cleaning the surfaces of the positive electrode 83g and the negative electrode 85g. By supplying the microbubble-containing water BW to the electrode holder 67g, it becomes easy to keep the surfaces of the electrodes 83g and 85g clean. The microbubble-containing water BW supplied to the electrode holder portion 67g is discharged to the drain pipe 125. In the lower diagram in FIG. 14, the flow direction of the fine bubble-containing water BW is indicated by a one-dot chain line arrow. Note that the rotation amount of the honeycomb structure electrode portion 83g ₂ is detected by a rotary encoder (not shown), and based on the detection amount of the rotary encoder, the power supply control unit of the bath water dirt decomposing apparatus sends each electrode 83g, The application timing of the pulse discharge voltage to 85 g is determined.

Embodiment 9 FIG.
FIG. 16 is a perspective view schematically showing a soil decomposing portion in still another bath water soil decomposing apparatus of the present invention. Dirt decomposing unit 90H shown in the figure, provided with positive electrodes 83h and a shaft portion 83h ₁ and shaft portion 83h honeycomb structured electrode portions 83h ₂ attached to the _1, and the honeycomb negative electrode 85h, honeycomb The structural electrode portions 83h ₂ and the negative electrodes 85h are alternately attached to the shaft portion 83h ₁ at regular intervals. Each of the honeycomb structure electrode portion 83h ₂ and the negative electrode 85h is provided with conductivity by adding zeolite, an oxidation catalyst, or the like as an adsorbent to the surface of a base material made of ceramics or synthetic resin. Each of the honeycomb structure electrode portion 83h ₂ and the negative electrode 85h is formed such that the axis of each hexagonal hole H is slightly shifted from the longitudinal axis of the shaft portion 83h ₁ .

The dirt decomposing portion 90H is attached to a hot water supply device with a chasing function in which a return electrode 70b of the secondary side circulation conduit is formed with a hollow disk-like large-diameter electrode holder portion 67h. Electrode holder portion 67h shown includes a holder body 67h ₁ for rotatably holding the positive electrode 83h and the negative electrode 85h, and a cap 67h ₂ which is detachably mounted to the upper portion of the holder main body 67h ₁ .

  FIG. 17 is a conceptual diagram schematically showing an example of a usage pattern of the dirt decomposing unit shown in FIG. The example shown in the figure is an example in which the soil decomposition unit 90H of FIG. 16 is arranged in a hot water supply device with a reheating function in which the electrode holder portion 67h is formed on the return pipe 70b of the secondary side circulation line. The configuration of the hot water heater with a reheating function excluding each of the pipe 70b and the bath water dirt decomposing apparatus (not shown) is the same as that of the hot water heater 130 with a reheating function shown in FIG. Of the constituent elements shown in FIG. 17, those common to the constituent elements shown in FIG. 16 are assigned the same reference numerals as those used in FIG. 16, and descriptions thereof are omitted. In addition to the above-described soil decomposing unit 90H, the bath water soil decomposing device, which is not shown, applies a voltage to the positive electrode 83h and the negative electrode 85h to cause discharge, and an output operation of the power unit. And a power control unit for controlling.

As shown in the upper diagram in FIG. 17, at the same time as the chasing operation is started, a predetermined voltage is applied from the plus terminal 91a of the power supply unit to the plus electrode 83h in the bath water dirt decomposing apparatus, The polarity of the electrode 83h is kept positive. No voltage is applied to the negative electrode 85h. As a result, the micro bubbles MB adsorbed with the dirt G are electrically attracted to the plus electrode 83h, and the density of the micro bubbles BM on the surface of the plus electrode 83h is increased. Each honeycomb structure electrode portion 83h ₂ and each minus electrode 85h naturally rotate at a speed of about one rotation per minute around the shaft portion 83e ₁ .

As shown in the lower diagram in FIG. 17, when each honeycomb structure electrode portion 83h ₂ and each negative electrode 85h are rotated halfway, the soil is decomposed from each of the positive terminal 91a and the negative terminal 91b of the power source portion in the soil decomposition apparatus. A predetermined pulse discharge voltage is applied to the portion 90F, and a pulse discharge is generated between the plus electrode 83h and the minus electrode 85h, and the dirt G adsorbed on the microbubbles MB is harmlessly decomposed into extremely fine organic substances. . As a result, the bath water 150a is cleaned.

In this dirt decomposition part 90H, since the honeycomb structure electrode parts 83h ₂ and the negative electrodes 85h are alternately arranged, the area of the electrode surface where discharge occurs is larger than that of the dirt decomposition part described in the fifth to eighth embodiments. The dirt G can be efficiently decomposed. Moreover, if the thickness of the honeycomb structure electrode portion 83h ₂ and the negative electrode 85h is reduced and the distance between the electrodes is reduced, the dirt G is efficiently decomposed even if the pulse discharge voltage supplied to the positive electrode 83h and the negative electrode 85h is lowered. be able to. Note that the rotation amounts of the honeycomb structure electrode portion 83h ₂ and the minus electrode 85h are detected by a rotary encoder (not shown), and based on the detection amount of the rotary encoder, the power control unit of the bath water dirt decomposing apparatus The application timing of the pulse discharge voltage to each electrode 83h, 85h is determined.

  As described above, the embodiment of the bath water dirt decomposing apparatus and the hot water supply device with a chasing function of the present invention has been described. However, as described above, the present invention is not limited to the above embodiment. For example, the power supply control unit in the bath water dirt decomposing apparatus is not an essential component, and the control unit of the water heater with a reheating function can also serve as the power supply control unit. The micro-bubble generating part in the bath water dirt decomposing apparatus is not an indispensable constituent member and can be an arbitrary constituent member. However, in order to efficiently decompose the dirt in the bath water flowing through the piping for chasing, the micro-bubble generating part is very small. It is preferable to configure the bath water dirt decomposing apparatus using the foam generating part. In the first to ninth embodiments, the electrode holder portion that holds each electrode of the dirt decomposition portion has been described as a part of the return pipe in the secondary side circulation line in the hot water heater with a tracking function. The part can also be regarded as a component of the bath water dirt decomposing apparatus.

  The material of the plus electrode and the minus electrode of the soil decomposition part can be selected as appropriate. Each electrode can be made from a single metal such as titanium or tungsten, each electrode can be made from an alloy such as stainless steel, and platinum, silver, gold, etc. can be applied to a single metal or alloy base material. Each electrode can also be produced by coating. Furthermore, the surface of the base material made of metal, ceramics, synthetic resin or the like, titanium oxide, manganese oxide, or an oxidation catalyst having noble metal such as platinum supported on these surfaces, and at least an adsorbent such as zeolite or activated carbon One electrode can be attached to each electrode.

  The interelectrode distance between the plus electrode and the minus electrode in the soil decomposition part can be appropriately selected within a range of about 20 mm or less, and is preferably about 5 to 20 mm or less. In addition, the voltage applied to the plus electrode and the minus electrode can be appropriately selected within a range of about several tens of kV or less, and can be generally within a range of 1 kV to 30 kV. The hot water heater with a reheating function to which the dirt decomposing unit is attached may be of a type in which hot water is heated by a heater disposed in a hot water storage tank, in addition to a type in which hot water is heated by a heat pump unit. The present invention can be variously modified, modified and combined in addition to the above.

  The bathing water dirt decomposing apparatus of the present invention can be used for a hot water heater with a reheating function for home use or business use, and the hot water heater with a reheating function of the present invention can be used as a hot water supply apparatus for home use or business use. Can do.

It is the schematic which shows an example of the hot water supply machine with a chasing function of this invention. It is a perspective view which shows roughly the stain | pollution | contamination decomposition | disassembly part in the bath water stain | pollution | contamination decomposition | disassembly apparatus which comprises the water heater with a chasing function shown in FIG. It is a conceptual diagram which shows roughly decomposition | disassembly of the dirt by the dirt decomposition | disassembly part shown in FIG. It is a perspective view which shows roughly the soil decomposition | disassembly part in the other bath water soil decomposition | disassembly apparatus of this invention. It is a conceptual diagram which shows roughly an example of the usage pattern of the dirt decomposition | disassembly part shown in FIG. It is a conceptual diagram which shows roughly the other example of the usage pattern of the dirt decomposition | disassembly part shown in FIG. It is a perspective view which shows roughly the soil decomposition | disassembly part in the further another bath water soil decomposition | disassembly apparatus of this invention. It is a conceptual diagram which shows roughly an example of the usage condition of the dirt decomposition | disassembly part shown in FIG. It is a conceptual diagram which shows roughly the other example of the usage pattern of the dirt decomposition | disassembly part shown in FIG. It is a perspective view which shows roughly the soil decomposition | disassembly part in the further another bath water soil decomposition | disassembly apparatus of this invention. It is a conceptual diagram which shows roughly an example of the usage pattern of the dirt decomposition | disassembly part shown in FIG. It is the schematic which shows the soil decomposition | disassembly part in the further another bath water soil decomposition | disassembly apparatus of this invention. It is a perspective view which shows roughly the soil decomposition | disassembly part in the further another bath water soil decomposition | disassembly apparatus of this invention. It is a conceptual diagram which shows roughly an example of the usage condition of the dirt decomposition | disassembly part shown in FIG. It is the schematic which shows the soil decomposition | disassembly part in the further another bath water soil decomposition | disassembly apparatus of this invention. It is a perspective view which shows roughly the soil decomposition | disassembly part in the further another bath water soil decomposition | disassembly apparatus of this invention. It is a conceptual diagram which shows roughly an example of the usage pattern of the dirt decomposition | disassembly part shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 20 Hot water storage tank 60 Primary side circulation pipe 60a Outward pipe 60b Return pipe 67a, 67b, 67d-67h Electrode holder part 70 Secondary side circulation pipe 70a Outward pipe 70b Return pipe 80 Heating exchanger 83a-83h for reheating 83d ₂ , 83e ₂ , 83f ₂ , 83g ₂ , 83h ₂ Honeycomb structure electrode part 85a to 85h Negative electrode 87 Drive part 90A to 90H Dirt decomposition part 91 Power supply part 92 Power supply control part 93 Microbubble generation part 100 Bath water dirt decomposition Device 130 Water heater with chasing function 150 Bath 150a Bath water MB Micro bubbles G Dirt

Claims (10)

A bathing water decomposing apparatus attached to piping for reheating in a hot water heater with a reheating function that takes out the bath water from the bathtub and heats it back to the bathtub.
A positive electrode and a negative electrode disposed in the piping for reheating,
A power supply unit that applies a voltage to the plus electrode and the minus electrode to generate a discharge between the plus electrode and the minus electrode;
The bath water dirt decomposing apparatus is characterized in that dirt in bath water flowing through the piping for chasing is decomposed by the discharge. A micro-bubble generating part that is arranged on the upstream side of the plus electrode and the minus electrode in the tracking pipe and that generates micro-bubbles in the bath water flowing through the pipe;
2. The bath water dirt decomposing apparatus according to claim 1, wherein the dirt adsorbed on the micro bubbles is decomposed by the discharge.   3. The bath water dirt decomposing apparatus according to claim 2, wherein the dirt is decomposed by the discharge after the fine bubbles adsorbed by the dirt are electrically sucked by the plus electrode.   The bath water dirt decomposing apparatus according to any one of claims 1 to 3, wherein the positive electrode has an electrode portion having a honeycomb structure.   5. The bath water dirt decomposing apparatus according to claim 4, further comprising a drive unit configured to rotate the electrode portion of the honeycomb structure in the tracking pipe.   6. The bath water dirt decomposing apparatus according to claim 4 or 5, wherein the dirt is adsorbed by the positive electrode, and the dirt is decomposed by the discharge after the plus electrode rotates. . Each of the positive electrode and the negative electrode is a titanium electrode, or an electrode obtained by coating a substrate made of titanium, stainless steel, or tungsten with platinum, silver, or gold,
The electrode distance between the positive electrode and the negative electrode is 20 mm or less.
The bath water dirt decomposing apparatus according to any one of claims 1 to 6.   Each of the positive electrode and the negative electrode is an electrode in which at least one of an adsorbent and an oxidation catalyst is attached to the surface of a base made of metal, ceramics, or synthetic resin. 6. The bath water dirt decomposing apparatus according to any one of 6 above. The oxidation catalyst is titanium oxide or manganese oxide, or a noble metal supported on the surface of the titanium oxide or manganese oxide,
The adsorbent is zeolite or activated carbon;
The bath water dirt decomposing apparatus according to claim 8. A reheating heat exchanger that uses hot water stored in a hot water storage tank as a heat source is provided, and a reheating operation in which the bath water taken out from the bathtub is heated by the reheating heat exchanger and then returned to the bathtub can be performed. A water heater with a firewood function,
A positive electrode and a negative electrode disposed in the pursuit pipe, and a power supply unit that applies a voltage to the positive electrode and the negative electrode to generate a discharge between the positive electrode and the negative electrode And a bath water dirt decomposing device that decomposes the dirt in the bath water flowing through the chase pipe by the discharge.

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