JP5164872B2 - Purification device - Google Patents

Description

  The present invention relates to a purification device for removing contaminants such as organic matter and inorganic matter generated in bath water.

  Contaminants such as dirt (organic matter and inorganic matter) and bacteria (organic matter) generated from the human body by bathing and mixed in the bath water circulate in the follow-up piping by the follow-up function of the water heater. The pollutants mixed in the bath water adhere to and accumulate on the inner surface of the tracking pipe, the inner surface of the heat exchanger, the bathtub, and the like. In a bath system with a chasing function that includes chasing pipes, heat exchangers, bathtubs, etc., if a predetermined amount of contaminants adheres to the bath system with chasing function, organic substances are recirculated during chasing, While polluting the bathtub and bath water, it reduces the heat exchange efficiency of the heat exchanger. In addition, bacteria represented by Rhodtrula grow in the bath system with a chasing function to form a slimy surface deposit, and the bath system with the chasing function becomes hygienicly deteriorated.

  On the other hand, there is a method for removing contaminants (dirt, bacteria, etc.) by the contaminant adsorbing force of micro bubbles as a method for preventing the contamination of water generally used in a purification device or the like. This contaminant removal method using microbubbles is a cleaning method that does not require a cleaning agent, and its use is expanding as an environmentally friendly cleaning method.

  Microbubbles are generally negatively charged and can be removed by adsorbing positively charged dirt and bacteria, but the contaminants adsorbed to the microbubbles float and separate from the object to be cleaned. A function for discharging pollutants that are separately levitated and separated is required. For example, a dirt component in which fine bubbles are adsorbed and floated on oil and fat or fine dust is discharged to the second tank installed beside the washing tank by overflowing the dirty water from the washing tank, and the dirt component floating in the second tank Is recovered and removed by a filter or a rotating drum (see, for example, Patent Document 1).

JP 2007-136275 A

  However, even if the above-described conventional technique is simply diverted to a bath system with a bath replenishing function, a mechanism for regenerating the overflowing bath water (washing water) is required to overflow the rising dirt. Further, in the case of a bathtub that is not configured to regenerate the overflowing bath water, the bath water is unnecessarily overflowed and there is a problem that a large amount of bath water is used. In addition, there is a problem that the dirt reattaches to the body of the bather when the dirt floats on the bath water. This is because in a hot water supply facility having a function of washing the follow-up piping with fine bubbles, dirt and bacteria themselves are not decomposed, and organic matter continues to circulate in the piping. For this reason, there is a problem that contaminants that continue to circulate reattach to the bather and the cleanliness of the bathtub and the like is impaired.

  This invention is made | formed in view of the above, Comprising: It aims at obtaining the purification apparatus which removes the contaminant which generate | occur | produced in bath water with a simple structure, suppressing the usage-amount of bath water.

In order to solve the above-described problems and achieve the object, the present invention provides at least one pair arranged so as to be opposed to the exhaust pipe of a hot water supply apparatus that takes out the bath water in the bathtub and heats it back to the bathtub. And a voltage control unit that generates a discharge between the electrodes by applying a pulse voltage to the electrodes, and is disposed upstream of the electrodes in the follow-up piping, and is generated in the bath water. comprising a microbubble generator that generates a negative charged microbubbles to adsorb contaminants, and the voltage control unit, plus at least one electrode of the contaminants discharging decomposition treatment, and the electrode by the discharge By applying this pulse voltage, an adsorption process for adsorbing the microbubbles to an electrode to which a positive pulse voltage is applied is performed .

  According to the present invention, a pulse voltage is applied to the electrodes to generate a discharge between the electrodes, and the pollutants generated in the bath water are subjected to a discharge decomposition treatment. There is an effect that contaminants in the water can be removed.

FIG. 1 is a diagram showing a configuration of a heat pump hot water supply apparatus having a purification device according to Embodiment 1 of the present invention. FIG. 2 is a diagram (major part enlarged view) showing the configuration of the purification device. FIG. 3 is a diagram illustrating the configuration of the plus electrode and the minus electrode. FIG. 4 is a diagram schematically showing a pulse voltage application pattern of the bath water dirt decomposing method according to the first embodiment. FIG. 5 is a diagram schematically showing a pulse voltage application pattern of the bath water dirt decomposing method according to the second embodiment. FIG. 6 is a diagram schematically showing a pulse voltage application pattern of the bath water dirt decomposing method according to the third embodiment. FIG. 7 is a diagram schematically showing a pulse voltage application pattern of the bath water dirt decomposing method according to the fourth embodiment. FIG. 8 is a diagram schematically showing a pulse voltage application pattern when the dirt on the electrode is decomposed. FIG. 9 is a diagram schematically showing a pulse voltage application pattern of the bath water dirt decomposition method according to the fifth embodiment. FIG. 10 is a diagram showing a configuration of a honeycomb electrode provided in the heat pump hot water supply apparatus of the sixth embodiment. FIG. 11 is a diagram for explaining the rotation operation of the honeycomb-shaped plus electrode. FIG. 12 is a diagram schematically showing a pulse voltage application pattern of the bath water dirt decomposing method according to the sixth embodiment.

  Hereinafter, embodiments of a purification apparatus according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. In the following description, hot water or water used in the heat pump hot water supply apparatus may be referred to as hot water, hot water, high temperature water (high temperature hot water), or low temperature water (low temperature hot water).

Embodiment 1 FIG.
FIG. 1 is a diagram showing a configuration of a heat pump hot water supply apparatus having a purification device according to Embodiment 1 of the present invention. In FIG. 1, the circuit block diagram of the heat pump hot-water supply apparatus (hot-water heater) 100 is shown. The heat pump hot water supply apparatus 100 of the present embodiment includes a heat pump unit 1, a tank unit 2, a bathtub 15, and a hot water outlet 27. Moreover, the tank unit 2 has the purification apparatus 300 which wash | cleans bath water (tub water) etc. The purification apparatus 300 is configured such that two or more opposing electrodes are arranged to face each other with a predetermined distance on a follow-up pipe that takes out the bath water in the bathtub 15 and heats it back to the bathtub 15. A pulse voltage (pulse discharge voltage) is applied to the electrodes arranged in the electrode to cause discharge between the electrodes.

  The heat pump unit 1 has a configuration in which a compressor 3, a radiator 4, an expansion valve 5, and an evaporator 6 are sequentially connected by a pipe P7. The compressor 3 compresses the refrigerant to bring the refrigerant into a high temperature and high pressure state, and the radiator 4 cools the refrigerant from the compressor 3. The expansion valve 5 decompresses the refrigerant from the radiator 4, and the evaporator 6 absorbs heat from the atmosphere to evaporate the refrigerant and return it to the compressor 3. The heat pump unit 1 preferably uses, for example, carbon dioxide, which is a natural refrigerant, as a refrigerant, and operates on a high pressure side in a state exceeding the critical pressure.

  The tank unit 2 includes a hot water storage tank 10, a plate-type heat exchanger 11 for chasing a bath, and a purification device (bath water dirt decomposition unit) 300. The hot water storage tank 10 is a stacked hot water storage tank in which high temperature water is stored in the upper part and low temperature water is stored in the lower part for each temperature layer. The plate heat exchanger 11 has a configuration in which a plurality of heat transfer plates are stacked. In addition, the purification apparatus 300 of the present embodiment decomposes contaminants in the bath water (organic dirt, inorganic dirt, organic bacteria, etc.) into minute and harmless organic substances and minute and harmless inorganic substances. It has a function to keep the inside of the bath system with a chasing function, which will be described later, clean at all times.

  The plate heat exchanger 11 is a water-water heat exchanger in which water flows in a pair of pipes in opposition to each other. The plate heat exchanger 11 has a function of transmitting the heat of the hot water in the hot water storage tank 10 to the bath water from the bathtub 15. The plate heat exchanger 11 is provided with a tank side inlet 111 and a bath side outlet 114 in the upper part, and a tank side outlet 112 and a bath side inlet 113 in the lower part. Hot water from the hot water storage tank 10 is put into the upper tank side inlet 111, and the hot water supplied from the upper tank side inlet 111 is discharged from the lower tank side outlet 112. Bath water from the bathtub 15 is put into the lower bath side inlet 113, and bath water supplied from the lower bath side inlet 113 is discharged from the upper bath side outlet 114.

  The hot water storage tank 10 is provided with a hot water outlet 101 and a hot water inlet 103 at the top, and a water inlet 102 and a water outlet 104 at the bottom. The water outlet 104 arranged in the lower part is connected to the lower part of the radiator 4 through the pipe P20, and the hot water inlet 103 arranged in the upper part is connected to the upper part of the radiator 4 through the pipe P21. ing. The pipe P <b> 20 is a pipe that sends the water in the hot water storage tank 10 taken out from the water outlet 104 to the radiator 4, and the three-way valve 22 and the boiling water pump 19 are disposed on the pipe. The pipe P21 is a pipe that sends hot water sent from the radiator 4 to the hot water storage tank 10, and is connected to the three-way valve 22 at a position between the radiator 4 and the hot water storage tank 10.

  The water in the hot water storage tank 10 taken out from the water outlet 104 is sent into the pipe P20 by the boiling water pump 19 and supplied to the radiator 4 of the heat pump unit 1 through the pipe P20. The water from the pipe P20 is heated by the radiator 4 and then returned to the hot water storage tank 10 from the hot water inlet 103 at the upper part of the hot water storage tank 10 through the pipe P21. The heat pump hot water supply apparatus 100 constitutes a hot water storage circuit by the boiling water pump 19, the pipe P20, the radiator 4 and the pipe P21.

  In the plate heat exchanger 11, the upper tank side inlet 111 is connected to the hot water outlet port 101 of the hot water storage tank 10 via the pipe P12, and the lower bath side outlet 114 is connected to the hot water storage tank 10 via the pipe P14. Connected to the bottom. The pipe P12 is a pipe that sends the high-temperature water sent from the hot water storage tank 10 to the plate heat exchanger 11 and the hot water supply port 27 side. The pipe P14 is a pipe that sends hot water taken out from the plate heat exchanger 11 (low temperature water whose temperature has been lowered by heat exchange) to the hot water storage tank 10, and a tank-side water pump 13 is disposed on the pipe. Yes.

  High temperature water is supplied to the tank side inlet 111 at the upper part of the plate heat exchanger 11 from the hot water outlet 101 disposed at the upper part of the hot water storage tank 10 through the pipe P12. The plate heat exchanger 11 exchanges heat of the bath water with high-temperature water from the hot water storage tank 10 and then discharges the water after heat exchange from the lower tank side outlet 112. The discharged water is returned to the hot water storage tank 10 through the pipe P14 by the tank side water pump 13. The heat pump hot water supply apparatus 100 forms a primary water supply circuit of the plate heat exchanger 11 by the pipe P12, the plate heat exchanger 11, the tank-side water supply pump 13, and the pipe P14.

  A mixing valve 23 and a mixing valve 24 are disposed between the pipe P12 and the hot water supply port 27. The mixing valve 23 is connected to a pipe P12, a water supply pipe (pipe for supplying city water (tap water) to the water inlet 102) P41, and a water injection pipe P26 connected to the bath side outlet 114. The mixing valve 24 is connected to a pipe P12, a water supply pipe P41, and a pipe P42 to the hot water supply port 27 side.

  The bathtub 15 is connected to the plate heat exchanger 11 by a bathtub return pipe P18 and a bathtub return pipe P17. The bathtub going-out pipe P18 is a pipe that sends hot water from the bath-side outlet 114 of the plate heat exchanger 11 to the bathtub 15, and a dirt sensor 35 and a purification device 300 are arranged in the middle of the pipe. The dirt sensor 35 is a sensor that monitors the state of dirt in the bathtub outlet pipe P <b> 18, and is installed at the front stage (the plate heat exchanger 11 side) (upstream side) of the purification device 300. The bathtub return pipe P17 is a pipe that sends hot water from the bathtub 15 to the bath-side inlet 113 of the plate heat exchanger 11. On the pipe, the bath-side water pump 16, the discharge pipe ejector 28, and a backflow prevention pipe are provided. An air check valve 29 for the exhaust pipe ejector and an electromagnetic valve 30 for the exhaust pipe ejector that controls the introduction of air into the exhaust pipe ejector 28 are arranged.

  The bath-side water pump 16 is a pump that feeds hot water from the bathtub 15 into the plate heat exchanger 11 via the bathtub return pipe P17. The follow-up piping ejector (microbubble generator) 28 generates microbubbles from the tip of the ejector and sends the microbubbles into the warm water in the bathtub return pipe P17. The follower piping ejector 28 introduces air from the outside when the follower piping ejector solenoid valve 30 is opened by the ejector solenoid valve opening / closing signal of the follower control to generate micro bubbles.

  The mixing valve 23 injects hot water from the hot water storage tank 10 or water from the water supply pipe P41 into the bathtub 15 through the water injection pipe P26, the bathtub return pipe P17, and the bathtub return pipe P18. The mixing valve 24 supplies the hot water from the hot water storage tank 10 and the water from the water supply pipe P41 to the hot water supply port 27 via the pipe P42.

  Hot water from the bathtub 15 is supplied to the bath-side inlet 113 from the bathtub return pipe P17 by the bath-side water supply pump 16 to the bath-side inlet 113 below the plate-type heat exchanger 11, and heat exchange is performed in the plate-type heat exchanger 11. It becomes warm water that has been heated. Thereafter, the hot water discharged from the upper bath-side outlet 114 is returned to the bathtub 15 through the bathtub outlet pipe P18. The heat pump hot water supply apparatus 100 forms a secondary water supply circuit of the plate heat exchanger 11 by the bathtub return pipe P17, the bath side water supply pump 16, the plate heat exchanger 11 and the bathtub outlet pipe P18.

  Inside the purification apparatus 300, a positive electrode 321A and a negative electrode 322B are arranged, and each electrode is connected to a discharge control power source 33. The purification device 300 includes a power supply control unit 34, and the power supply control unit 34 controls a signal for adjusting the output of the discharge control power supply 33. The purification apparatus 300 according to the present embodiment decomposes and removes dirt, bacteria, and the like present in the bath system with a tracking function by electric discharge. The bath system with a follow-up function here is a follow-up pipe (tub return pipe P17, bathtub return pipe P18), a plate heat exchanger 11, bath water, and the like. The contaminants existing in the plate heat exchanger 11, bath water, etc. are decomposed and removed by electric discharge.

  Next, the operation of the heat pump hot water supply apparatus 100 will be described. The heat pump hot water supply apparatus 100 starts the operation of the heat pump unit 1 when the hot water storage operation signal is input. In the heat pump unit 1, the refrigerant is compressed by the compressor 3 to become high temperature and pressure, cooled by the radiator 4, depressurized by the expansion valve 5, absorbs heat from the atmosphere by the evaporator 6, evaporates, and returns to the compressor 3. . At this time, water is taken out from the water outlet 104 arranged at the lower part of the hot water storage tank 10 by the boiling water pump 19, supplied to the radiator 4 through the pipe P <b> 20, and heated by the radiator 4. The Then, the hot water heated to a high temperature flows into the hot water storage tank 10 from the hot water inlet 103 disposed at the upper part of the hot water storage tank 10. Thereby, the hot water heated by the heat pump unit 1 is sequentially stored from the upper part of the hot water storage tank 10.

  When performing bath chase, the heat pump hot-water supply apparatus 100 discharges hot high-temperature water in the hot water storage tank 10 from the hot water outlet 101 as an operation of the tank-side water supply circuit of the tank unit 2. The hot water discharged from the hot water outlet 101 is supplied from the upper side of the plate heat exchanger 11 to the tank side inlet 111 via the pipe P <b> 12, and heat exchange is performed in the plate heat exchanger 11. Heat-exchanged hot water (hot water after heat reduction) is sent out from the tank-side outlet 112 on the lower side through the plate heat exchanger 11. Hot water sent from the tank side outlet 112 flows into the lower part of the hot water storage tank 10 from the water inlet 102 via the pipe P14. The water supply operation between the hot water storage tank 10 and the plate heat exchanger 11 is performed by a tank-side water supply pump 13.

  As a result, the amount of high-temperature water used for hot water supply is small, the city water is hardly supplied to the bottom of the hot water storage tank 10, and the bath chase is carried out with a considerable amount of heat accumulated in the hot water storage tank 10. Even if it is a case, heat exchange can fully be performed by the plate type heat exchanger 11 with high heat exchange capability. Thereby, the lower part of the hot water storage tank 10 can be kept in a low temperature state.

  The heat pump hot-water supply apparatus 100 supplies water from the bathtub 15 to the bath-side inlet 113 on the lower side of the plate heat exchanger 11 through the bathtub return pipe P17 as the operation of the bath-side water supply circuit. The plate heat exchanger 11 heat-exchanges water from the bathtub, and sends out hot water (hot water after heating) from the bath-side outlet 114 on the upper side through the plate heat exchanger 11. Hot water sent from the bath-side outlet 114 is returned to the bathtub 15 via the bathtub outlet pipe P18. The water supply operation between the bathtub 15 and the plate heat exchanger 11 is performed by a bath-side water supply pump 16.

  The heat pump water heater 100 supplies high-temperature water in the tank-side water supply circuit from the upper side of the plate heat exchanger 11, and supplies low-temperature water in the bath-side water supply circuit from the lower side of the plate-type heat exchanger 11. . Since heat is easily transmitted upward, the heat pump water heater 100 can maintain the upper part of the plate heat exchanger 11 in a high temperature state, thereby increasing the amount of heat exchange. Moreover, the heat pump hot-water supply apparatus 100 can maintain the lower part of the plate-type heat exchanger 11 in a low temperature state, and can thereby reduce the temperature of the hot water returned to the hot water storage tank 10.

  In the bathtub return pipe P17, when the follower pipe ejector solenoid valve 30 is opened by the ejector solenoid valve opening / closing signal for follower control, air is introduced from the outside by the follower pipe ejector 28. As a result, micro bubbles are generated in the hot water of the follower pipe from the tip of the ejector, and the hot water containing the micro bubbles becomes the bathtub outgoing pipe P18, the bath water dirt decomposing portion 31, the bathtub 15, the bathtub return pipe P17, the plate type heat exchange. Circulate the vessel 11.

  Next, a detailed configuration of the purification device 300 will be described. FIG. 2 is a diagram (major part enlarged view) showing the configuration of the purification device. FIG. 2 shows an operation state in which the microbubbles adsorbing contaminants 51 such as dirt and bacteria are decomposed by the discharge when passing between or near the electrodes.

  In the bathtub going-out pipe P18, plate-like titanium plus electrodes 321A and minus electrodes 322B are alternately arranged at predetermined intervals at positions where the purification device 300 is arranged. A voltage is applied from the discharge control power supply 33 between the plus electrode 321A and the minus electrode 322B by a control signal sent from the power supply control unit 34. As a result, a discharge occurs between the positive electrode 321A and the negative electrode 322B. As a result, the pollutant 51 generated by the ejector for piping and adsorbed to the microbubbles moving on the flow of the hot water at the time of the chase is converted into a microhazardous substance 52 (organic substance or inorganic substance) that is minute and harmless in the discharge space 325 Disassembled.

  Next, the configuration of the plus electrode 321A and the minus electrode 322B will be described. FIG. 3 is a diagram illustrating the configuration of the plus electrode and the minus electrode. In FIG. 3, the state of the electrodes is shown three-dimensionally. Plate-like plus electrodes 321A and plate-like minus electrodes 322B are alternately arranged inside the bathtub outlet pipe P18. The positive electrode 321A and the negative electrode 322B have substantially the same main surface, and the main surface of the positive electrode 321A and the main surface of the negative electrode 322B are arranged in parallel to each other. The distance between the electrodes (between the plus electrode 321A and the minus electrode 322B) is, for example, 5 mm. Even when the distance between the electrodes is increased to 20 mm, the discharge state is maintained, and the effect of degrading dirt and bacteria can be maintained. Further, although a pulse voltage of 10 kV is applied between the plus electrode 321A and the minus electrode 322B, the effect of decomposition by discharge can be maintained even if the applied pulse voltage is lowered to about 5 kV. Even if the pulse frequency is changed from 100 Hz to 100 kHz, there is no significant difference in the effect of decomposition.

  Next, a pulse voltage pattern applied between the electrodes will be described. FIG. 4 is a diagram schematically showing a pulse voltage application pattern of the bath water dirt decomposition method (contaminant decomposition method) according to the first embodiment. The power supply control unit 34 of the purification device 300 first starts voltage application to the plus electrode 321A. Specifically, a pulse voltage of 10 kHz and 5 kV is continuously applied to the plus electrode 321A. The application of the pulse voltage to the plus electrode 321A is continuously performed without stopping. One second from the start of voltage application to the plus electrode 321A to the start of voltage application to the minus electrode 322B is the pattern A11 shown in FIG.

  The power supply control unit 34 applies a pulse voltage of 10 kHz and −5 kV to the negative electrode 322B while maintaining the application of the pulse voltage to the positive electrode 321A one second after starting the application of the pulse voltage to the positive electrode 321A. Apply for 1 msec. The voltage application for 1 msec to the negative electrode 322B is a pattern B11 shown in FIG. Thereafter, the power supply control unit 34 stops the voltage application to the minus electrode 322B for 1 second, and then applies the 10 kHz, −5 kV pulse voltage to the minus electrode 322B again for 1 msec. One second during which the voltage application to the negative electrode 322B is stopped is the pattern A12 in FIG. Further, after the pattern A12, 1 msec in which the voltage is again applied to the negative electrode 322B is the pattern B12 in FIG. As described above, the power supply control unit 34 continuously applies a voltage to the plus electrode 321A and intermittently applies a voltage to the minus electrode 322B.

  The power supply controller 34 starts a series of patterns (from the pattern A11 to the pattern B11) from the start of voltage application to the positive electrode 321A until the pulse voltage of 10 kHz and −5 kV is applied to the negative electrode 322B for 1 msec. A one-cycle voltage application pattern is used, and this one-cycle voltage application pattern is repeated 10 times, for example.

  While the voltage application pattern consisting of the above-mentioned pattern A11 and pattern B11 is repeated 10 cycles by the power supply control unit 34, while the pulse voltage 5 kV is applied to the positive electrode 321A (between the pattern A11 and the pattern A12), Negatively charged dirt, bacteria, and the like are attracted to the positive electrode 321A and adsorbed (dirt adsorbed). Further, between the pattern A11 and the pattern A12, discharge occurs at a part between the positive electrode 321A and the negative electrode 322B (0 V in the first embodiment), and a part of dirt, bacteria, etc. is applied to the positive electrode 321A. Decomposed simultaneously with adsorption. Further, while the pulse voltage of 10 kHz and −5 kV is applied to the negative electrode 322B for 1 msec (between the pattern B11 and the pattern B12), dirt and bacteria adsorbed on the microbubbles are completely decomposed (dirt discharge). Disassembled).

  Here, the case where a pulse voltage of 10 kHz at −5 kV and 1 msec are applied to the negative electrode 322B every second has been described, but when there is little dirt, bacteria, etc., about once every minute (1 msec) ) Can be reduced by decomposing dirt and bacteria. Further, when the voltage application time of 1 msec to the negative electrode 322B is increased to 100 msec, the decomposition of dirt and bacteria progresses further, and the amount of dirt and bacteria can be reduced to 1/3 or less.

  Note that the configuration of the purification device 300 may include a mechanism (interelectrode distance changing mechanism) that changes the distance between the electrodes by moving the positive electrode 321A and the negative electrode 322B. In the case of this configuration, the purification device 300 starts the discharge by reducing the distance between the electrodes, and ends the discharge by increasing the distance between the electrodes.

  As described above, the positive electrode 321A and the negative electrode 322B are arranged to face each other with a predetermined distance in the tracking pipe, and a positive pulse voltage is applied to the positive electrode 321A. Dirt and bacteria contained in the bath water can be adsorbed on the surface of the positive electrode 321A. In addition, since a positive pulse voltage is applied to the positive electrode 321A and a negative pulse voltage is applied to the negative electrode 322B, electric discharge occurs between the electrodes, and dirt and bacteria are harmless and become an extremely fine substance. Decomposes well. Therefore, it becomes possible to keep the purging pipe, the heat exchanger, and the bath water always clean.

  As described above, according to the first embodiment, the application of the pulse voltage to the plus electrode 321A and the minus electrode 322B arranged in the follow-up pipe adsorbs and decomposes dirt, bacteria, and the like. It is possible to remove dirt, bacteria, etc. generated in the bath water with a simple structure while suppressing the above.

Embodiment 2. FIG.
FIG. 5 is a diagram schematically showing a pulse voltage application pattern of the bath water dirt decomposing method according to the second embodiment. In the second embodiment, dirt and bacteria in the bath water are removed using the heat pump hot water supply apparatus 100 having the same configuration as that of the heat pump hot water supply apparatus 100 in the first embodiment, and thus the description thereof is omitted.

  The power supply control unit 34 of the purification device 300 first starts voltage application to the plus electrode 321A and the minus electrode 322B. Specifically, a pulse voltage of 10 kHz and 2 kV is continuously applied to the plus electrode 321A, and a pulse voltage of 10 kHz and 2 kV is also applied to the minus electrode 322B. Application of the pulse voltage to the positive electrode 321A is continuously performed without stopping. The power supply control unit 34 starts applying the voltage to the plus electrode 321A and the minus electrode 322B and then maintains the application of the pulse voltage to the plus electrode 321A after the elapse of a predetermined time (for example, 1 second), while the minus electrode 322B. The pulse voltage applied to is changed to 10 kHz and -8 kV. A pattern A21 shown in FIG. 5 is from when voltage application to the plus electrode 321A and minus electrode 322B is started to when the voltage applied to the minus electrode 322B is changed. After the pattern A21, the power supply controller 34 applies a pulse voltage of 10 kHz and −8 kV to the negative electrode 322B for 1 msec. The voltage application for 1 msec to the negative electrode 322B is a pattern B21 shown in FIG.

  Thereafter, the power supply controller 34 changes the pulse voltage applied to the negative electrode 322B to 10 kHz and 2 kV while maintaining the application of the pulse voltage to the positive electrode 321A. As a result, a pulse voltage of 10 kHz and 2 kV is applied to the plus electrode 321A and the minus electrode 322B. The power supply controller 34 starts application of a voltage of 2 kV to the positive electrode 321A and the negative electrode 322B, and then applies the pulse voltage to the positive electrode 321A while maintaining the application of the pulse voltage to the positive electrode 321A after a predetermined time has elapsed. The pulse voltage is changed to 10 kHz and −8 kV. A pattern A22 shown in FIG. 5 is a period from when the voltage application of 2 kV to the plus electrode 321A and the minus electrode 322B is started until the voltage applied to the minus electrode 322B is changed. After the pattern A22, the power supply control unit 34 applies a pulse voltage of 10 kHz and −8 kV to the negative electrode 322B for 1 msec. The voltage application for 1 msec to the negative electrode 322B is a pattern B22 shown in FIG. In this way, voltage application to the plus electrode 321A is continuously performed, and voltage application to the minus electrode 322B is performed while switching between 2 kV and −8 kV.

  The power supply controller 34 starts a series of patterns (from pattern A21 to pattern B21) from the start of applying the voltage of 2 kV to the negative electrode 322B to the end of applying the voltage of -8 kV to the negative electrode 322B in one cycle. This voltage application pattern is repeated a predetermined number of times (for example, 10 times).

  While the pulse voltage of 2 kV is applied to the positive electrode 321A and the negative electrode 322B (between the pattern A21 and the pattern A22), all the electrodes are 2 kV. The ability to adsorb is improved. In addition, while the pulse voltage of 2 kV is applied to the plus electrode 321A and the minus electrode 322B, compared to the case of applying 10 kV, almost no discharge occurs between the electrodes, and negatively charged dirt and bacteria are applied at 10 kV. It will be in a state where it is more easily adsorbed than time. Further, while a voltage of −8 kV is applied to the negative electrode 322B (between the pattern B21 and the pattern B22), the potential difference from the positive electrode 321A becomes 10 kV, and discharge starts between the electrodes, causing dirt and bacteria. Etc. are decomposed.

  As described above, according to the second embodiment, when a positive voltage is applied, all the electrodes are positively charged. Therefore, more dirt and bacteria are adsorbed than when only the positive electrode 321A is positively charged. Ability improves. Further, since the positive voltage to be applied is 2 kV, almost no discharge occurs between the electrodes, and a larger amount of contaminant 51 charged negatively than when 10 kV is applied can be adsorbed. In addition, since a voltage of −8 kV is applied to the negative electrode 322B, the potential difference between the electrodes becomes 10 kV during this period, and discharge starts between the electrodes, so that the contaminant 51 can be decomposed.

Embodiment 3 FIG.
FIG. 6 is a diagram schematically showing a pulse voltage application pattern of the bath water dirt decomposing method according to the third embodiment. In Embodiment 3 as well, dirt and bacteria in the bath water are removed using the heat pump water heater 100 having the same configuration as the heat pump water heater 100 of Embodiment 1, and the description thereof is omitted. In heat pump hot water supply apparatus 100 of the present embodiment, one of positive electrode 321A and negative electrode 322B sets the electrode to 0 V and applies a pulse voltage to the other electrode.

  In the present embodiment, every other electrode plate in which the positive electrodes 321A and the negative electrodes 322B are alternately arranged is set to 0 V, and a pulse voltage of ± 10 kV is applied to the electrodes positioned therebetween. In other words, the power supply control unit 34 sets one of the positive electrode 321A and the negative electrode 322B to 0 V and applies a pulse voltage of ± 10 kV to the other electrode. Specifically, the power supply control unit 34 applies the pulse voltage of ± 10 kV to the electrode to which the pulse voltage of ± 10 kV is applied with an amplitude of 30 kHz for 300 msec, and then stops applying the pulse voltage for 10 sec. A pattern A31 shown in FIG. 6 is a period during which a voltage is applied to the plus electrode 321A or the minus electrode 322B for 300 msec. The applied voltage stop period of 10 seconds to the plus electrode 321A and the minus electrode 322B is a pattern B31 shown in FIG. The power supply control unit 34 repeats the voltage application for 300 milliseconds and the voltage application stop for 10 seconds a predetermined number of times (for example, 10 cycles). Thereby, in this Embodiment, dirt, bacteria, etc. in bath water are removed, changing the applied voltage of only any one of the plus electrode 321A and the minus electrode 322B.

  As described above, according to the third embodiment, since the applied voltage of only one of the plus electrode 321A and the minus electrode 322B is controlled, it is 2% as compared with the case where the plus electrode 321A and the minus electrode 322B are independently controlled. It is possible to discharge with double efficiency. Therefore, the degradation efficiency of dirt and bacteria can be improved by a factor of two. As a result, it is possible to halve the power used during discharge.

Embodiment 4 FIG.
FIG. 7 is a diagram schematically showing a pulse voltage application pattern of the bath water dirt decomposing method according to the fourth embodiment. In the fourth embodiment, the contaminant 51 in the bath water is removed using the heat pump hot water supply apparatus 100 having the same configuration as the heat pump hot water supply apparatus 100 of the first embodiment, and the description thereof is omitted.

  In the present embodiment, the dirt sensor 35 monitors the dirt state in the bathtub return pipe P17, and controls the application and stop of the pulse voltage according to the dirt state detected by the dirt sensor 35. The dirt sensor 35 outputs a voltage signal proportional to the amount of dirt, bacteria, etc. to the power supply controller 34. The power supply control unit 34 calculates the amount of contaminants 51 such as dirt and bacteria (hereinafter referred to as the amount of dirt) based on the electrical signal from the dirt sensor 35. In the power supply control unit 34, an upper limit (dirt upper limit threshold) and a lower limit (no dirt threshold) (dirt lower limit threshold) of the dirt amount are set in advance. The power supply control unit 34 applies a pulse voltage between the electrodes when the amount of contamination exceeds a predetermined contamination upper limit threshold. At this time, the power supply control unit 34 applies a pulse voltage under the same conditions as the pulse voltage described in the fourth embodiment, for example. That is, every other electrode plate in which the positive electrodes 321A and the negative electrodes 322B are alternately arranged is set to 0 V, and a pulse voltage of ± 10 kV and 30 kHz is applied to the electrodes positioned therebetween.

  The power supply control unit 34 turns on the pulse voltage of ± 10 kV and 30 kHz when the dirt amount exceeds the dirt upper limit threshold value, and turns off the pulse voltage when the dirt amount falls below the lower dirt limit threshold value. As a result, it is possible to apply a pulse voltage according to the amount of dirt such as dirt and bacteria, and it is possible to reduce the operating power to about half or less of the conventional one.

  Note that a method of controlling the voltage application to the electrodes according to the dirt state monitored by the dirt sensor 35 may be applied to the first to third embodiments. In this case, the power supply control unit 34 applies a pulse voltage for decomposing the dirt discharge to the electrode when the dirt amount exceeds the dirt upper limit threshold, and when the dirt amount falls below the lower dirt threshold, the dirt adsorption is performed. A pulse voltage is applied to the electrode.

  As described above, according to the fourth embodiment, since the pulse voltage is turned on only while the amount of dirt exceeds the dirt upper limit threshold, the contaminant 51 can be efficiently decomposed. In addition, when the amount of dirt exceeds the upper limit threshold value, a pulse voltage that decomposes dirt discharge is applied to the electrode, and when the amount of dirt falls below the lower dirt threshold value, a pulse voltage that adsorbs dirt is applied to the electrode. Therefore, it is possible to efficiently remove the contaminant 51 with low operating power.

Embodiment 5 FIG.
FIG. 8 is a diagram schematically showing a pulse voltage application pattern when the dirt on the electrode is decomposed. In the fifth embodiment, the contaminant 51 in the bath water is removed using the heat pump hot water supply apparatus 100 having the same configuration as the heat pump hot water supply apparatus 100 of the first embodiment.

  In the present embodiment, a pulse voltage for regenerating (cleaning) the discharge electrode by removing dirt and bacteria on the surface of the discharge electrode (the positive electrode 321A and the negative electrode 322B) is applied. For example, the power supply controller 34 applies a pulse voltage of −10 kV and 10 kHz to the electrode plates of the positive electrode 321A and the negative electrode 322B for 1 second, and then stops the application of the pulse voltage for 1 second after one cycle. This cycle is repeated a plurality of times (for example, 30 times). In other words, the power supply controller 34 repeats the control of applying a pulse voltage of −10 kV and 10 kHz to the electrode plates of the positive electrode 321A and the negative electrode 322B for 1 second at intervals of 1 second.

  During voltage application to such a discharge electrode, water is electrolyzed on the electrode surface to generate micro bubbles on the electrode surface, and dirt and bacteria are decomposed by the discharge. Then, dirt and bacteria decomposed on the discharge electrode are detached from the electrode by microbubbles. Thus, the electrode cleaning effect by the microbubbles generated by the follower piping ejector 28 that has moved on the flow of hot water during the follow-up is enhanced by the voltage application to the discharge electrode. This makes it possible to adsorb, decompose, and desorb dirt, bacteria, and the like on the electrode surfaces of the plus electrode 321A and the minus electrode 322B. Although FIG. 8 shows a case where a negative pulse voltage for performing electrode cleaning is applied to the negative electrode 322B, a negative pulse voltage for performing electrode cleaning may be applied to the positive electrode 321A. Further, a negative pulse voltage for performing electrode cleaning may be applied to both the negative electrode 322B and the positive electrode 321A.

  FIG. 9 is a diagram schematically showing a pulse voltage application pattern of the bath water dirt decomposition method according to the fifth embodiment. FIG. 9 shows a pulse voltage application pattern that repeats adsorption and decomposition of dirt and bacteria, and electrode regeneration.

  The power supply control unit 34 of the purification device 300 first starts voltage application to the plus electrode 321A. Specifically, a pulse voltage of 10 kHz and 5 kV is continuously applied to the plus electrode 321A. A predetermined time (for example, 1 second) from the start of voltage application to the plus electrode 321A to the start of voltage application to the minus electrode 322B is a pattern A61 shown in FIG.

  The power supply control unit 34 applies a pulse voltage of 10 kHz and −5 kV to the negative electrode 322B for a predetermined time after a lapse of a predetermined time from the start of applying the pulse voltage to the positive electrode 321A. The application of a voltage for 1 msec to the negative electrode 322B is a pattern B61 shown in FIG. During this pattern B61, the power supply controller 34 continues the pulse voltage (10 kHz, 5 kV) to the plus electrode 321A.

  Thereafter, the power supply control unit 34 applies a pulse voltage similar to the pulse voltage described in FIG. Specifically, the power supply control unit 34 applies a pulse voltage of −15 kV and 10 kHz to the electrode plates of the positive electrode 321A and the negative electrode 322B for 1 second, and then stops applying the pulse voltage for only 1 second. This cycle is repeated a plurality of times (predetermined time). While this cycle is repeated, the pattern C61 in FIG. 9 is obtained.

  Thereafter, the power supply control unit 34 applies a pulse voltage of 10 kHz and 5 kV to the positive electrode 321A again for a predetermined time, and stops the voltage application to the negative electrode 322B only for the predetermined time. This predetermined time is the pattern A62 shown in FIG.

  The power supply control unit 34 starts a series of patterns (from pattern A61 to pattern C61) from the start of voltage application of 5 kV to the plus electrode 321A to the end of voltage application of −15 kV to the plus electrode 321A and the minus electrode 322B. Is a one-cycle voltage application pattern, and this one-cycle voltage application pattern is repeated.

  While a positive pulse voltage (5 kV) is applied to the positive electrode 321A (between the pattern A61), negatively charged dirt, bacteria, and the like are adsorbed to the positive electrode 321A.

  In addition, while the interelectrode discharge is performed by applying an appropriate voltage difference between the plus electrode 321A and the minus electrode 322B, the contaminant 51 is adsorbed to the plus electrode 321A and decomposed. In other words, while the positive voltage (5 kV) is applied to the positive electrode 321A and the negative voltage (−5 kV) is applied to the negative electrode 322B (between the pattern B61), the contaminant 51 is adsorbed and decomposed. Is done.

  In addition, while a negative voltage (−15 kV) is applied to the positive electrode 321A and the negative electrode 322B (between the pattern C61), water is electrolyzed on the electrode surface to generate micro bubbles on the electrode surface. The Thereby, the contaminant 51 after decomposition | disassembly remove | deviates from an electrode, and an electrode cleaning effect increases. In addition, you may combine the application of the pulse voltage at the time of performing the electrode cleaning demonstrated in FIG.8 and FIG.9 with the pulse voltage application pattern of Embodiment 1-4.

  As described above, according to the fifth embodiment, the pulse voltage of −10 kV and 10 kHz is applied to the electrode plates of the positive electrode 321A and the negative electrode 322B at intervals of 1 second. Microbubbles are generated on the surface. Therefore, the plus electrode 321A and the minus electrode 322B can be easily cleaned.

Embodiment 6 FIG.
FIG. 10 is a diagram illustrating a configuration of a honeycomb-shaped electrode provided in the heat pump hot water supply apparatus of the sixth embodiment. The heat pump hot water supply apparatus 100 according to the sixth embodiment differs from the heat pump hot water supply apparatus 100 according to the first embodiment in the structure of the electrodes, the pattern of the pulse voltage applied to the electrodes, the operation of the electrodes, and the like.

  The heat pump water heater 100 of the sixth embodiment includes a catalyst / adsorbent-attached honeycomb-shaped positive electrode (honeycomb-shaped positive electrode 323) as an electrode corresponding to the positive electrode 321A of the first embodiment, and the negative electrode of the first embodiment. A catalyst / adsorbent-attached negative electrode (negative electrode 324) is provided as an electrode corresponding to 322B.

  An electrode mechanism 50 including a honeycomb-like plus electrode 323 and a minus electrode 324 is arranged at a position where the purification device 300 is arranged on the bathtub outlet pipe P18. The electrode mechanism 50 includes a substantially cylindrical housing and a rotation shaft 151 that penetrates the cylindrical central axis portion of the housing.

  In the substantially cylindrical casing, the outer wall of one semi-cylindrical is constituted by a minus electrode 324, and the outer wall of the other semi-cylindrical is constituted by a member (insulator) other than the electrode. And the bathtub going-out piping P18 is joined in the direction parallel to the rotating shaft 151 in the semicylindrical body comprised with members other than an electrode. In other words, the electrode mechanism 50 is disposed such that the rotating shaft 151 is in a direction parallel to the axial direction of the bathtub outlet pipe P18. Thereby, the bath water flowing through the bathtub going-out pipe P18 passes through the inside of the substantially cylindrical casing and flows again through the bathtub going-out pipe P18. A honeycomb-shaped plus electrode 323 is housed in the substantially cylindrical casing with a predetermined gap from the casing. The honeycomb-shaped plus electrode 323 has a structure in which the side walls of regular hexagonal columns are arranged without gaps, and is arranged in the casing so that the column axis direction of the hexagonal columns is the column axis direction of the casing. Therefore, the bath water flowing through the bathtub going-out pipe P18 passes through the regular hexagonal column within the substantially cylindrical casing.

  When adsorbing and decomposing the contaminants 51 in the bath water circulating through the follow-up piping, the honeycomb-shaped plus electrode 323 rotates around the rotation shaft 151 while fixing the substantially cylindrical housing. FIG. 11 is a diagram for explaining the rotation operation of the honeycomb-shaped plus electrode. As shown in the figure, when the honeycomb-shaped plus electrode 323 is rotated about the rotation shaft 151, the lower regular hexagonal column moves to the upper side, and the upper regular hexagonal column moves to the lower side.

  FIG. 12 is a diagram schematically showing a pulse voltage application pattern of the bath water dirt decomposing method according to the sixth embodiment. In FIG. 12, the contaminant 51 in the bath water is adsorbed on the honeycomb-shaped positive electrode 323, and the pattern of the pulse voltage applied between the electrodes when the adsorbed contaminant 51 is removed and the honeycomb-shaped plus electrode 323 is regenerated. Is shown. In the present embodiment, when the honeycomb-like plus electrode 323 passes through the tracking pipe, dirt, bacteria, etc. are adsorbed on the surface of the honeycomb-like plus electrode 323. Then, the honeycomb positive electrode 323 having adsorbed the contaminant 51 is rotated toward the negative electrode 324 side, and the contaminant 51 on the honeycomb positive electrode 323 is decomposed by the discharge electrode between the electrodes.

  When the pursuit starts, the power supply control unit 34 of the purification device 300 continuously applies a positive pulse voltage to the honeycomb-like positive electrode 323. Application of the pulse voltage to the honeycomb-shaped plus electrode 323 is continuously performed without stopping. Thus, in the honeycomb-shaped plus electrode 323, the contaminant 51 such as dirt or bacteria is included in the vicinity of the region sandwiched by the bathtub outlet pipe P18 (the honeycomb surrounded by the insulator outside the minus electrode 324). Negatively charged micro bubbles are adsorbed.

  A negative pulse voltage is applied to the negative electrode 324 for a predetermined time at a predetermined timing. Thereafter, the negative pulse voltage is stopped for a predetermined time, and after the predetermined time has elapsed, the negative pulse voltage is applied to the negative electrode 324 for a predetermined time. The power supply control unit 34 repeatedly applies and stops the pulse voltage to the negative electrode 324. While the pulse voltage is applied to the negative electrode 324, the timing (A71), the timing (A72), and the timing (A73) in FIG.

  Further, while the follow-up starts and a positive pulse voltage is applied to the honeycomb-like plus electrode 323, the honeycomb-like plus electrode 323 rotates around the rotation shaft 151. For example, the honeycomb-shaped positive electrode 323 rotates slowly at a speed of about once per hour. When the honeycomb-shaped plus electrode 323 is gradually rotated and rotated 180 degrees, the portion where the microbubbles including the contaminant 51 are adsorbed by the honeycomb-like plus electrode 323 moves to the space where the minus electrode 324 is disposed. Thus, the contaminant 51 on the honeycomb at the position covered with the minus electrode 324 in the honeycomb plus electrode 323 is decomposed by the discharge between the honeycomb plus electrode 323 and the minus electrode 324, and the honeycomb plus electrode The surface of 323 (adsorbent) returns to a clean state.

  As described above, the honeycomb-like plus electrode 323 adsorbs the contaminant 51 on the lower side (location not covered with the minus electrode 324) and the contaminant 51 on the upper side (location covered with the minus electrode 324). Disassemble. Then, as the honeycomb-shaped plus electrode 323 rotates, the lower side moves to the upper side and the contaminant 51 is decomposed, and the upper side moves to the lower side and adsorbs the contaminant 51. The heat pump hot water supply apparatus 100 according to the present embodiment uses these processes to adsorb dirt and bacteria in the lower half of the honeycomb and decomposes dirt and bacteria in the upper half covered with the negative electrode 324 on the opposite side. And repeating the process. As a result, the heat pump hot water supply apparatus 100 can simultaneously perform the adsorption process of the contaminant 51 and the decomposition process of the contaminant 51.

  The honeycomb-shaped plus electrode 323 is not limited to a structure in which regular hexagonal columns are arranged without gaps, and may be a structure in which columnar bodies are arranged. In the present embodiment, the voltage is applied to the honeycomb-like plus electrode 323 and the minus electrode 324 at the time of tracking, and the honeycomb-like plus electrode 323 is rotated. A voltage may be applied to the plus electrode 323 and the minus electrode 324 to rotate the honeycomb plus electrode 323. In the present embodiment, the case where the negative electrode 324 has a semi-cylindrical shape has been described, but the negative electrode 324 may have any shape.

  As described above, according to the sixth embodiment, the discharge between the honeycomb-shaped plus electrode 323 and the minus electrode 324 is performed by adjusting the distance between the honeycomb-like plus electrode 323 and the minus electrode 324 and applying an appropriate pulse voltage. Therefore, it is not necessary to turn on / off the pulse power as time passes.

  The applied voltage, pulse frequency, pulse voltage application time, pulse voltage stop time, and the like described in Embodiments 1 to 6 are examples, and the purification device 300 may be operated using other values. Further, the arrangement position of the plus electrode 321A and the minus electrode 322B may be any position. Moreover, you may combine the bath water dirt decomposition method and the dirt decomposition method on an electrode which were demonstrated in Embodiment 1-6.

  As described above, the purification apparatus according to the present invention is suitable for removing contaminants such as organic substances and inorganic substances generated in bath water.

DESCRIPTION OF SYMBOLS 1 Heat pump unit 2 Tank unit 3 Compressor 4 Radiator 5 Expansion valve 6 Evaporator 10 Hot water storage tank 11 Plate type heat exchanger 13 Tank side water pump 15 Bath 16 Bath side water pump 19 Water supply pump for boiling 22 Three-way valve 23 Mixing Valve 24 Mixing valve 27 Hot water supply port 28 Follow-up piping ejector 29 Solenoid valve for follow-up piping ejector 30 Air check valve for follow-up piping ejector 33 Discharge control power supply 34 Power supply control unit 35 Dirt sensor 50 Electrode mechanism 51 Contaminant 52 Micro harmless Substance 101 Hot water outlet 102 Water inlet 103 Hot water inlet 104 Water outlet 111 Tank side inlet 112 Tank side outlet 113 Bath side inlet 114 Bath side outlet 151 Rotating shaft 300 Purification device 321A Positive electrode 322B Negative electrode 323 Honeycomb positive electricity 324 minus electrode 325 discharge space 100 a heat pump water heater P7, P12, P14, P20, P21, P41, P42 pipe P17 tub return pipe P18 tub outward pipe P26 water injection pipe

Claims (9)

At least one pair of electrodes arranged so as to oppose in the follow-up piping of the hot water supply device that takes out the bath water in the bathtub and heats it back to the bathtub;
A voltage controller that generates a discharge between the electrodes by applying a pulse voltage to the electrodes;
A micro-bubble generating portion that is arranged upstream of the electrode in the follow-up piping and generates negatively charged micro-bubbles that adsorb contaminants generated in the bath water;
With
The voltage control unit, the contaminants discharged decomposed by the discharge, and by applying a positive pulse voltage to at least one of said electrodes, said microbubbles to electrodes by applying a positive pulse voltage A purification apparatus that performs an adsorption process for adsorption . The voltage control unit performs the discharge decomposition process by applying a positive pulse voltage to one electrode of the pair of electrodes and applying a negative pulse voltage to the other electrode. The purification device according to claim 1 . The voltage control unit applies a negative pulse voltage to the electrode to which the positive pulse voltage is applied, thereby removing the negatively charged contaminants after the discharge decomposition from the electrode to which the positive pulse voltage is applied. The purification apparatus according to claim 2 , wherein a separation process is performed. The voltage control unit applies a pulse voltage in which a potential is changed from positive to negative to one electrode of the pair of electrodes, so that the microbubbles are applied to the electrode when the positive pulse voltage is applied. The purification apparatus according to claim 1 , wherein when the negative pulse voltage is applied, contaminants adsorbed on the microbubbles are discharged and decomposed. A dirt sensor that is disposed in the tracking pipe and detects the amount of dirt in the tracking pipe;
The voltage control unit applies a pulse voltage to the electrode when the dirt sensor detects a dirt amount equal to or higher than an upper limit threshold, and applies a pulse voltage to the electrode when the dirt sensor detects a dirt quantity equal to or lower than a lower threshold. The purification device according to any one of claims 1 to 4 , wherein the application of the pulse voltage is stopped. The voltage control unit, by applying a pulse voltage to the electrode, the water was electrolyzed at the electrode surface, thereby to claim 3, characterized in that by generating microbubbles performs the desorption process The purification device as described. The purification apparatus according to claim 1 , wherein the voltage control unit applies a positive voltage value that does not cause a discharge between the electrodes to at least one of the electrodes when performing the adsorption process. The pair of electrodes are a positive electrode to which a positive pulse voltage is applied and a negative electrode to which a negative pulse voltage is applied,
A honeycomb-structured positive electrode having an axial direction parallel to the axial direction of the tracking pipe;
The positive electrode is housed and a part of the positive electrode is arranged so that the positive electrode rotates in a different central axis in a direction coaxial with the follow-up pipe and the bath water flows in the axial direction of the honeycomb structure. A housing inserted in the middle of the follow-up piping;
A negative electrode disposed on the outer wall surface of the housing where the bath water does not pass;
Further comprising an electrode mechanism having
The positive electrode is rotated while applying a pulse voltage to the positive electrode and the negative electrode, and the micro bubbles are adsorbed by the positive electrode rotated to a position where the bath water passes through the positive electrode, and 2. The discharge according to claim 1 , wherein discharge is generated between the plus electrode rotated to a position where the minus electrode is disposed and the minus electrode to discharge and decompose the contaminant adsorbed on the microbubbles. The purification device as described. An inter-electrode distance changing mechanism that changes the distance between the electrodes by moving the electrodes, and the inter-electrode distance changing mechanism starts discharging by reducing the distance between the electrodes, and the distance between the electrodes The purifying device according to any one of claims 1 to 8 , wherein the discharge is terminated by widening.

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