JP5048140B2 - Water purifier - Google Patents

Description

  The present invention relates to a water purifier having a function of cleaning a filter.

  As described in Japanese Patent Application Laid-Open No. 08-84589 (hereinafter referred to as Patent Document 1), a liquid purification apparatus such as a water purifier is provided with a plurality of filter tanks. Each of the plurality of filter tanks accommodates a hollow fiber membrane type filter. The dirty raw water flowing into the filter tank is purified by passing through these filters. In the water purifier according to Patent Document 1, a plurality of filter tanks are arranged in parallel.

  In the water purifier according to Patent Document 1, when the filter is washed, the purified water that has been purified by passing through the filter of at least one filter tank is passed through the filter of the other filter tank, so that the other filter tank The filter is being cleaned.

  Thus, in the water purifier which concerns on patent document 1, the purified water purified with the at least 1 filter tank is supplied to the other filter tank. Thereby, even when the water purifier which concerns on patent document 1 is not equipped with the tank which collects the purified water for the washing | cleaning of a filter, it can wash | clean the filter of another filter tank with the purified water purified by at least one filter tank. it can. As a result, the water purifier according to Patent Document 1 can always supply purified water to the user.

Japanese Patent Application Laid-Open No. 08-84589

  When two filter tanks arranged in parallel are provided as in the water purifier according to Patent Document 1, when the filter tanks have the same specifications as each other, the manufacturing cost of the water purifier or the replacement of the filter or the like The cost which concerns on can be reduced. However, when these two filter tanks have the same specifications, when water flows into the two filter tanks at the same flow rate or flow rate, the respective filters may be clogged at the same time.

  When the filter is clogged, the flow rate or flow rate of the water passing through the filter is lowered, and the cleaning effect of the raw water by the filter is lowered. Therefore, when both filters are clogged simultaneously, it becomes impossible to wash | clean the filter of another filter tank sufficiently using the purified water purified by at least one filter tank.

  Thus, the objective of this invention is providing the water purifier comprised so that the filter each accommodated in the two filter tanks arrange | positioned in parallel may not be clogged simultaneously.

The water purifier according to the present invention includes a first filter tank and a second filter tank. Each of the first filter tank and the second filter tank contains a filter that purifies the raw water by allowing the raw water to pass therethrough. Moreover, as for the water purifier according to this invention, the 1st filter tank and the 2nd filter tank are arrange | positioned in parallel. Furthermore, the water purifier according to the present invention includes a suppression unit. A suppression part suppresses the flow volume or flow velocity of the water which flows through a 2nd filter tank among the water which flows through a 1st filter tank and a 2nd filter tank, when purifying raw | natural water in the said water purifier. In the water purifier according to the present invention, the suppression unit is a fine bubble generator. The fine bubble generator is disposed downstream of the second filter tank with respect to the flow direction of the raw water when the raw water is purified in the water purifier.

  Thus, in the water purifier according to the present invention, the flow rate or flow velocity of the water flowing through the second filter tank out of the first filter tank and the second filter tank is suppressed by the suppression unit. Therefore, the filter of the second filter tank is less likely to be clogged than the filter of the first filter tank arranged in parallel. That is, the water purifier according to the present invention is configured such that the filters respectively accommodated in the two filter tanks arranged in parallel do not clog at the same time.

  For example, when two filter tanks are arranged in parallel as in the water purifier according to Patent Document 1, when the filters of both filter tanks are clogged, the raw water is purified with the filters of both filter tanks. I can't. Thereby, in the water purifier which concerns on patent document 1, even when the water which passed the filter of one filter tank passes the filter of another filter tank, it is thought that the filter of another filter tank is not cleaned cleanly. Therefore, in the water purifier which concerns on patent document 1, when each filter of both filter tanks is clogged, both filters cannot be wash | cleaned. Therefore, in the water purifier which concerns on patent document 1, when both filters cannot be wash | cleaned, it is necessary to replace | exchange both filters at the same time.

  On the other hand, the water purifier according to the present invention is configured so that the filters respectively accommodated in the first filter tank and the second filter tank arranged in parallel do not clog at the same time. Therefore, in the water purifier according to the present invention, it is not necessary to replace the filter of the first filter tank and the filter of the second filter tank at the same time.

In the water purifier according to the present invention, the suppression unit is a fine bubble generator . The fine bubble generator is disposed downstream of the second filter tank with respect to the flow direction of the raw water when the raw water is purified in the water purifier.

  According to this configuration, when the purified water that has passed through the filter of the second filter tank passes through the fine bubble generator, the flow rate of the purified water is reduced, thereby suppressing the flow rate or flow rate of the water flowing through the second filter tank. Is done. Thereby, each filter of the 1st filter tank and the 2nd filter tank arrange | positioned in parallel is hard to clog simultaneously. That is, the water purifier by this structure is comprised so that the filter each accommodated in the two filter tanks arrange | positioned in parallel may not clog.

  When the water purifier according to the present invention cleans the filter accommodated in the first filter tank in the water purifier, the fine bubbles generated by the fine bubble generator are purified by the second filter tank. It is preferable that the mixed purified water is configured to pass through the first filter tank. In this case, the purified water passing through the first filter tank is flowing in a direction opposite to the direction in which the raw water passes through the first filter tank when the raw water is purified by the first filter tank in the water purifier. Is preferred.

  According to this configuration, even if the filter of the first filter tank is clogged, the purified water that has been purified by passing through the filter of the second filter tank and mixed with fine bubbles is the first. By passing through the filter of one filter tank, clogging of the filter of the first filter tank can be effectively eliminated. Thus, in the water purifier by this structure, the filter of a 1st filter tank can be wash | cleaned effectively cleanly.

  In the water purifier according to the present invention, the fine bubble generator is preferably an ozone fine bubble generator.

  According to this configuration, the filter of the first filter tank can be more effectively and cleanly cleaned by the ozone fine bubbles generated from the ozone fine bubble generator.

  The water purifier according to the present invention preferably further includes a water purification tank. It is preferable that the water purification tank is arrange | positioned in the downstream rather than a 1st filter tank regarding the flow direction of raw | natural water in case raw | natural water is purified in the said water purifier. Furthermore, when the water purifier according to the present invention cleans the filter accommodated in the first filter tank in the water purifier, the water purifier is purified by the second filter tank and is generated by the fine bubble generator. The purified water in which bubbles are mixed is configured to pass through the first filter tank in a direction opposite to the direction in which the raw water passes through the first filter tank when the raw water is purified by the first filter tank in the water purifier. It is preferable that Further, when the filter housed in the first filter tank is washed in the water purifier, the purified water mixed with the fine bubbles purified by the second filter tank and generated by the fine bubble generator is converted into the purified water tank. It is preferable that it is comprised so that it can be stored in.

  Moreover, the water purifier according to the present invention has a water purifier tank in the case where the filter housed in the second filter tank is washed after washing the filter housed in the first filter tank. It is preferable that the purified water mixed with the stored fine bubbles and the purified water purified by the first filter tank pass through the second filter tank. In this case, the purified water passing through the second filter tank is flowing in a direction opposite to the direction in which the raw water passes through the second filter tank when the raw water is purified by the second filter tank in the water purifier. Is preferred.

  In the water purifier having this configuration, the water purification tank can store the purified water purified by passing through the filter of the first filter tank.

  Moreover, in the water purifier by this structure, when washing | cleaning the filter of a 1st filter tank in the said water purifier, the purified water which was refine | purified by the 2nd filter tank and the fine bubble which generate | occur | produced in the fine bubble generator mixed. However, when purifying raw water in the water purifier, the water is passed through the first filter tank so that the purified water flows in the direction opposite to the direction in which the raw water passes through the first filter tank. Furthermore, the water purification tank is arrange | positioned in the downstream rather than the 1st filter tank regarding the flow direction of raw | natural water when raw | natural water is purified in the said water purifier. Therefore, when the filter of the first filter tank is washed in the water purifier, the purified water purified by the second filter tank and mixed with fine bubbles flows into the water purification tank. Thereby, when wash | cleaning the filter of a 1st filter tank in the said water purifier, the water purification tank can store the purified water which was purified by the 2nd filter tank and the microbubble mixed.

  Thus, the purified water mixed with the fine bubbles stored in the purified water tank is collected in the purified water tank while the filter of the first filter tank is being washed. Furthermore, in the water purifier according to the present invention, when the filter of the second filter tank is washed after washing the filter of the first filter tank in the water purifier, fine bubbles stored in the water purification tank. Can be allowed to pass through the filter of the second filter tank and the purified water purified by the first filter tank. In this case, the purified water passing through the filter of the second filter tank flows in a direction opposite to the direction in which the raw water passes through the filter of the second filter tank when the raw water is purified in the water purifier.

  As described above, the water purifier according to this configuration can purify the purified water that is purified by the filter of the second filter tank and mixed with fine bubbles even when the filter of the first filter tank is clogged. By passing through the filter of one filter tank, the filter of the first filter tank can be effectively cleaned. Therefore, after the filter of the first filter tank is washed in the water purifier, the purified water purified by passing through the filter of the washed first filter tank is passed through the filter of the second filter tank. Thus, clogging of the filter of the second filter tank can be effectively eliminated. At this time, since the fine bubbles are mixed in the purified water passing through the filter of the second filter tank, the filter of the second filter tank can be effectively cleaned. Moreover, when the fine bubble containing ozone is mixed in the purified water which passes the filter of a 2nd filter tank, the filter of a 2nd filter tank can be wash | cleaned more effectively and cleanly.

  As mentioned above, according to this invention, the water purifier comprised so that the filter each accommodated in the two filter tanks arrange | positioned in parallel may not be clogged simultaneously can be provided.

It is a systematic diagram which shows the flow of water when the water purifier which concerns on 1st Embodiment of this invention purifies raw | natural water. It is a schematic diagram of the ozone fine bubble generator of the water purifier which concerns on this invention. It is a systematic diagram which shows the flow of water when the water purifier which concerns on 1st Embodiment of this invention cleans the filter of a 1st filter tank. It is a systematic diagram which shows the flow of water when the water purifier which concerns on 1st Embodiment of this invention cleans the filter of a 2nd filter tank. It is a systematic diagram which shows the flow of water when the water purifier which concerns on 2nd Embodiment of this invention purifies raw | natural water. It is a systematic diagram which shows the flow of water when the water purifier which concerns on 3rd Embodiment of this invention purifies raw | natural water. It is a systematic diagram which shows the flow of water when the water purifier which concerns on 3rd Embodiment of this invention cleans the filter of a 1st filter tank. It is a systematic diagram which shows the flow of water when the water purifier which concerns on 4th Embodiment of this invention purifies raw | natural water. It is a systematic diagram which shows the flow of water when the water purifier which concerns on 4th Embodiment of this invention cleans the filter of a 2nd filter tank.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, the water purifier 100 includes a filter tank 10 as a first filter tank and a filter tank 20 as a second filter tank. The filter tank 10 contains the filter 11, and the filter tank 20 contains the filter 21. The filter 11 and the filter 21 respectively purify raw water by allowing the raw water to pass therethrough. That is, the raw water purified by passing through the filter 11 of the filter tank 10 or the filter 21 of the filter tank 20 becomes purified water.

  The water purifier 100 includes a flow path 13 that passes through the filter tank 10, a flow path 23 that passes through the filter tank 20, and a main water flow path 9 as flow paths through which water passes. The channel 13 has at least a channel 14 and a channel 15, and the channel 23 has at least a channel 24 and a channel 25. The flow path 14 and the flow path 24 are connected to the main water passage 9. The flow path 14 and the flow path 24 supply the raw water flowing through the main water passage 9 to the filter tank 10 and the filter tank 20, respectively. The flow path 15 discharges the water inside the filter tank 10 to the outside of the filter tank 10 when the raw water is purified in the water purifier 100. The flow path 25 discharges the water inside the filter tank 20 to the outside of the filter tank 20 when purifying the raw water in the water purifier 100. Thus, the filter tank 10 and the filter tank 20 are arranged in parallel in the water purifier 100.

  Between the flow path 25 and the flow path 26 in the flow path 23, an ozone fine bubble generator 30 is disposed. The ozone fine bubble generator 30 generates fine bubbles containing ozone. The ozone fine bubble generator 30 is arranged downstream of the filter tank 20 when the raw water is purified in the water purifier 100. The flow path 26 is a flow path disposed on the downstream side when the raw water is purified in the water purifier 100 with respect to the ozone fine bubble generator 30. The flow path 26 discharges purified water mixed with fine bubbles containing ozone to the outside of the ozone fine bubble generator 30 when the water purifier 100 purifies the raw water.

  As shown in FIG. 2, the ozone fine bubble generator 30 includes an ozone generator 31 and a fine bubble generator 32. The ozone generator 31 generates a gas containing ozone. The fine bubble generating device 32 sucks the gas containing ozone generated by the ozone generating device 31 and generates fine bubbles. The ozone generator 31 is connected to the fine bubble generator 32 through the gas inlet 36.

  The fine bubble generator 32 is of a so-called ejector type. However, the fine bubble generating device 32 is not limited to an ejector type device, and any device may be used as long as the ozone fine bubble generator 30 generates fine bubbles containing ozone.

  The fine bubble generating device 32 includes an inlet 33 through which purified water flows into the fine bubble generating device 32, an outlet 34 through which purified water flows out of the fine bubble generating device 32, and an inlet 33 and an outlet 34. It has a negative pressure part 35 that is arranged between them and generates negative pressure, and a gas inlet 36 that sucks in gas containing ozone. In the negative pressure portion 35, the inner diameter is narrowed more than other portions. In the negative pressure part 35, a negative pressure is generated due to a rapid change in flow velocity or pressure before and after the negative pressure part 35. The fine bubble generating device 32 sucks the gas containing ozone in the negative pressure part 35. As a result, fine bubbles containing ozone are mixed into the purified water flowing into the fine bubble generating device 32 from the flow path 25 through the inflow port 33, and a part of the ozone is dissolved in the water.

  In the ozone fine bubble generator 30, the flow rate of the purified water is throttled by the flow rate or pressure of the purified water flowing into the fine bubble generator 32 from the inlet 33. Thereby, the flow volume or flow velocity of the water which flows through the flow path 23 (refer FIG. 1) which has the flow path 25 and the flow path 26 is suppressed. As a result, when the raw water is purified in the water purifier 100, the flow rate or flow velocity of the water flowing through the filter tank 20 is suppressed. As described above, the water purifier 100 includes the ozone fine bubble generator 30 as a suppressing unit. The suppression unit generally suppresses the flow rate by causing pressure loss. Therefore, since the pressure when water flows in the reverse direction to the filter 11 of the filter tank 10 can be reduced by providing the suppression unit, it is possible to avoid a situation in which the filter 11 is damaged due to excessive pressure applied to the filter 11. it can.

  The ozone fine bubble generator 30 suppresses the flow rate or flow velocity of the water flowing through the filter tank 20 when purifying the raw water in the water purifier 100 out of the water flowing through the filter tank 10 and the filter tank 20. When the raw water is purified in the water purifier 100, the flow rate or flow rate of the water flowing through the filter tank 20 is suppressed, so that the integrated flow rate of the water flowing through the filter tank 10 and the integrated flow rate of the water flowing through the filter tank 20 are relatively low. A big difference occurs. Due to the difference between the integrated flow rates, the filter 11 and the filter 21 are not easily clogged at the same time in the water purifier 100.

  The water purifier 100 includes electromagnetic valves 41, 42, 43, 44, and 45. The electromagnetic valve 41 is disposed in the flow path 14 and switches between supply and non-supply of raw water supplied from the main water passage 9 to the filter tank 10. The electromagnetic valve 42 is disposed in the flow path 24 and switches between supply and non-supply of raw water supplied from the main water passage 9 to the filter tank 20.

  The water purifier 100 includes a water purification tank 12 disposed on the downstream side of the filter tank 10 with respect to the flow direction of the raw water when the raw water is purified in the water purifier 100. The water purification tank 12 is disposed between the flow path 15 and the flow path 16 in the flow path 13. The flow path 16 is a flow path disposed on the downstream side of the water purification tank 12 with respect to the flow direction of the raw water when the raw water is purified in the water purifier 100. Further, the flow path 16 allows the purified water stored in the purified water tank 12 to flow out of the purified water tank 12 when the raw water is purified in the water purifier 100.

  The flow path 16 and the flow path 26 are connected to the purified water outflow path 8. A solenoid valve 45 is disposed in the purified water outflow path 8. The purified water purified by passing through the filter tank 10 or the filter tank 20 flows out of the water purifier 100 from the purified water outflow path 8 when the electromagnetic valve 45 opens the purified water outflow path 8. The electromagnetic valve 43 is disposed in the flow path 16 and switches between water passage and non-water passage between the purified water tank 12 or the filter tank 10 and the purified water outflow passage 8. The electromagnetic valve 44 is disposed in the flow path 26 and switches between water flow and non-water flow between the ozone fine bubble generator 30 and the purified water outflow path 8. The electromagnetic valve 45 is disposed in the purified water outflow path 8 and switches between water passing and non-water passing between the purified water outflow path 8 and the outside of the water purifier 100. In addition, the flow path 13, the flow path 23, the main water flow path 9, and the purified water outflow path 8 are each comprised by the tubular member which is not shown in figure.

  Below, when raw water is purified in the water purifier 100, that is, when raw water supplied to the filter tank 10 or the filter tank 20 from the main water passage 9 passes through the filter 11 or the filter 21, the raw water is purified. The operation of each of the solenoid valves will be described.

  When the raw water is purified by passing through the filter 11 of the filter tank 10, the flow path 14 is opened by the electromagnetic valve 41. The raw water flowing into the filter tank 10 through the flow path 14 is purified by passing through the filter 11 and becomes purified water. The purified water in the filter tank 10 is stored in the purified water tank 12 through the flow path 15. However, the water purifier 100 may not include the water purification tank 12, and the water in the filter tank 10 passes through at least the flow path 15 and the purified water outflow path 8, and the electromagnetic valve 45 opens the purified water outflow path 8. Sometimes it flows out of the water purifier 100.

  When the raw water is purified by passing through the filter 21 of the filter tank 20, the flow path 24 is opened by the electromagnetic valve 42. The raw water flowing into the filter tank 20 through the flow path 24 is purified by passing through the filter 21 and becomes purified water. The purified water in the filter tank 20 passes through the flow path 25 and the ozone fine bubble generator 30. When the ozone generator 31 is generating ozone, ozone is dissolved in purified water in the ozone fine bubble generator 30. When the purified water passes through the ozone fine bubble generator 30, the purified water whose flow rate or flow rate is suppressed as described above passes through the flow path 26 and the purified water outflow path 8, and the electromagnetic valve 45 opens the purified water outflow path 8. The water purifier 100 flows out.

  In addition, the water purifier 100 is arrange | positioned rather than the flow path 22 which connects the flow path 25 and the purified water tank 12, and the connection part 27 of the flow path 25 and the flow path 22 in the downstream of the flow path 25 at the time of raw | natural water purification. In addition, an electromagnetic valve 46 and an electromagnetic valve 47 disposed in the flow path 22 may be provided. When the electromagnetic valve 42 opens the flow path 24, the electromagnetic valve 46 closes the flow path 25, and the electromagnetic valve 47 opens the flow path 22, the purified water that has passed through the filter 21 of the filter tank 20 is The water is stored in the purified water tank 12 through the flow path 22. The purified water stored in the purified water tank 12 passes through the flow path 16 and the purified water outflow path 8, and flows out of the water purifier 100 when the electromagnetic valve 45 opens the purified water outflow path 8.

  The opening and closing of the solenoid valves 41, 42, 43, 44, 45, 46, 47 is controlled by the control unit 50. The ozone generator 31 of the ozone fine bubble generator 30 is controlled by the control unit 50.

  Next, when the filter 11 of the filter tank 10 is washed in the water purifier 100, that is, when the purified water that has been purified by passing through the filter 21 of the filter tank 20 is passed through the filter 11 of the filter tank 10, the electromagnetic waves described above. The operation of the valve and the like will be described with reference to FIG.

  When the filter 11 of the filter tank 10 is washed in the water purifier 100, the flow path 14 is closed by the electromagnetic valve 41 and the flow path 24 is opened by the electromagnetic valve 42. The purified water in the filter tank 20 passes through the flow path 25 and the ozone fine bubble generator 30. When the ozone generator 31 generates ozone when purified water passes through the ozone fine bubble generator 30, fine bubbles containing ozone are mixed in the purified water in the ozone fine bubble generator 30, and part of the ozone is purified. Dissolve.

  Further, when the filter 11 of the filter tank 10 is washed in the water purifier 100, the flow path 26 is opened by the electromagnetic valve 44, the flow path 16 is opened by the electromagnetic valve 43, and the purified water outflow path is driven by the electromagnetic valve 45. 8 is blocked. Therefore, when the raw water flows into the water purifier 100 and flows into the main water passage 9, the purified water purified by passing through the filter 21 of the filter tank 20 is the flow path 25, the flow path 26, and the flow path. 16 passes through the filter 11 of the filter tank 10 through the water purification tank 12 and the flow path 15. At this time, the purified water passing through the filter 11 of the filter tank 10 flows in a direction opposite to the direction in which water passes through the filter 11 of the filter tank 10 when the raw water is purified in the water purifier 100.

  Further, when the raw water flows into the water purifier 100 and flows into the main water passage 9, the purified water purified by passing through the filter 21 of the filter tank 20 is the flow path 25, the flow path 26, and the flow path. 16, and flows into the water purification tank 12. As a result, the purified water purified by passing through the filter 21 of the filter tank 20 is stored in the purified water tank 12.

  When the raw water is purified in the water purifier 100, the water that has washed the filter 11 by passing the filter 11 in the filter tank 10 in the direction opposite to the direction in which the water passes through the filter 11 in the filter tank 10 passes through the drainage channel 28. It passes through and is drained to the outside of the water purifier 100.

  By the way, when the ozone generator 31 is generating ozone when the filter 11 of the filter tank 10 is washed in the water purifier 100, the ozone purifier 30 is purified by passing through the filter 21 of the filter tank 20 and the ozone fine bubble generator 30. The purified water mixed with the ozone fine bubbles generated in the step passes through the flow path 26, the flow path 16, the purified water tank 12, and the flow path 15, and passes through the filter 11 of the filter tank 10. At this time, the purified water mixed with ozone fine bubbles passing through the filter 11 of the filter tank 10 flows in the direction opposite to the direction in which water passes through the filter 11 of the filter tank 10 when purifying the raw water in the water purifier 100. Yes.

The fine bubbles containing ozone collide with the surface of the filter 11, or the burst vibration (ultrasonic vibration) due to the burst of fine bubbles containing ozone acts on the surface of the filter 11. The pollutant adhered or deposited on the surface is peeled off from the surface of the filter 11. This also makes it difficult for the contaminants to adhere to the surface of the filter 11 and prevents the contaminants from attaching or depositing on the surface of the filter 11.
Furthermore, the filter 11 can be sterilized by ozone in the fine bubbles. As a result, the filter 11 can be effectively cleaned.

  Further, when the ozone generator 31 is generating ozone when the filter 11 of the filter tank 10 is washed in the water purifier 100, the ozone purifier is purified by passing through the filter 21 of the filter tank 20 and the ozone fine bubble generator 30. The purified water mixed with the ozone fine bubbles generated in the flow passes through the flow path 26 and the flow path 16 and flows into the purified water tank 12. As a result, the purified water tank 12 stores purified water that is purified by passing through the filter 21 of the filter tank 20 and mixed with ozone fine bubbles generated by the ozone fine bubble generator 30.

  In addition, when the water purifier 100 does not include the water purification tank 12 and the raw water flows through the main water passage 9, the purified water purified by passing through the filter 21 of the filter tank 20 flows at least with the flow path 25. It passes through the path 26 and the flow path 15 and passes through the filter 11 of the filter tank 10.

  When the purified water purified by passing through the filter 21 of the filter tank 20 is passed through the filter 11 of the filter tank 10, the electromagnetic valve 46 (see FIG. 1) is closed and the electromagnetic valve 47 (see FIG. 1). May be made to pass the filter 11 of the filter tank 10 by circulating at least the flow path 15 without allowing the ozone fine bubble generator 30 to pass. Furthermore, in this case, the purified water purified by passing through the filter 21 of the filter tank 20 is not limited to being stored in the purified water tank 12. For example, when the flow path 22 (see FIG. 1) is connected to the flow path 15 without passing through the water purification tank 12, the purified water purified by passing through the filter 21 of the filter tank 20 is stored in the water purification tank 12. It can pass through the filter 11 of the filter tank 10 without being carried out.

  Next, in the water purifier 100, when the filter 21 of the filter tank 20 is cleaned after the filter 11 of the filter tank 10 is cleaned, that is, after the filter 11 of the filter tank 10 is cleaned, the filter 11 of the filter tank 10 is cleaned. The operation of each of the solenoid valves and the like when the purified water purified by passing through the filter tank 20 is passed through the filter 21 will be described with reference to FIG.

  In the water purifier 100, when the filter 21 of the filter tank 20 is cleaned after the filter 11 of the filter tank 10 is cleaned, the flow path 24 is closed by the electromagnetic valve 42 and the flow path 14 is opened by the electromagnetic valve 41. ing. The purified water in the filter tank 10 passes through the flow path 15 and the purified water tank 12.

  Further, when the filter 21 of the filter tank 20 is washed after the filter 11 of the filter tank 10 is washed in the water purifier 100, the flow path 16 is opened by the electromagnetic valve 43, and the flow path 26 is opened by the electromagnetic valve 44. In addition, the purified water outflow path 8 is closed by the electromagnetic valve 45.

  In the case of cleaning the filter 21 of the filter tank 20 after cleaning the filter 11 of the filter tank 10 in the water purifier 100, the ozone generator 31 does not generate ozone. However, when the filter 11 of the filter tank 10 is washed in the water purifier 100, the purified water mixed with ozone fine bubbles purified by passing through the filter 21 of the filter tank 20 and generated by the ozone fine bubble generator 30 is mixed. The water is stored in the water purification tank 12. Therefore, in the water purifier 100, the filter 21 of the filter tank 10 is washed, and then the filter 21 of the filter tank 20 is washed. The raw water flows into the water purifier 100 and flows into the main water passage 9. Sometimes, the purified water mixed with the ozone fine bubbles stored in the purified water tank 12 and the purified water purified by passing through the filter 11 of the filter tank 10 are the flow path 16, the ozone fine bubble generator 30, and the flow path 25. And pass through the filter 21 of the filter tank 20. At this time, the purified water passing through the filter 21 of the filter tank 20 flows in a direction opposite to the direction in which water passes through the filter 21 of the filter tank 20 when the raw water is purified in the water purifier 100.

  When the raw water is purified in the water purifier 100, the water that has washed the filter 21 by passing through the filter 21 of the filter tank 20 in the direction opposite to the direction of the water passing through the filter 21 of the filter tank 20 passes through the drainage channel 29. It passes through and is drained to the outside of the water purifier 100.

  In the water purifier 100, the flow path 15 and the flow path 16 are determined when the raw water is purified, when the filter 11 of the filter tank 10 is washed, and when the filter 21 of the filter tank 20 is washed. The flow channel 26 and the flow channel 25 may be configured by the same tubular member, may be configured by different tubular members, or may be configured by the same tubular member in any part. Good. That is, in the water purifier 100, the flow of water is the same tubular when the raw water is purified, when the filter 11 of the filter tank 10 is washed, and when the filter 21 of the filter tank 20 is washed. It may flow through the members, may flow through other tubular members, or may flow through the same tubular member at any part.

  As described above, the water purifier 100 includes the filter tank 10 and the filter tank 20. The filter tank 10 and the filter tank 20 contain a filter 11 and a filter 21 that purify the raw water by allowing the raw water to pass through, respectively. Moreover, as for the water purifier 100, the filter tank 10 and the filter tank 20 are arrange | positioned in parallel. Furthermore, the water purifier 100 includes an ozone fine bubble generator 30 as an example of a suppression unit. The ozone fine bubble generator 30 suppresses the flow rate or flow rate of the water flowing through the filter tank 20 among the water flowing through the filter tank 10 and the filter tank 20 when purifying the raw water in the water purifier 100.

  Thus, in the water purifier 100, the flow rate or flow rate of the water flowing through the filter tank 20 out of the filter tank 10 and the filter tank 20 is suppressed by the ozone fine bubble generator 30. Therefore, the filter 21 of the filter tank 20 is less likely to be clogged than the filter 11 of the filter tank 10 arranged in parallel. That is, the water purifier 100 is configured so that the filter 11 and the filter 21 respectively accommodated in the filter tank 10 and the filter tank 20 arranged in parallel do not clog at the same time. Therefore, in the water purifier 100, it is not necessary to replace the filter 11 of the filter tank 10 and the filter 21 of the filter tank 20 at the same time.

  In addition, in the water purifier 100, the suppression unit is not limited to the ozone fine bubble generator 30.

  For example, the flow rate or flow velocity of the water flowing through the filter tank 20 is suppressed when the raw water is purified in the water purifier 100 by adjusting the opening of the electromagnetic valve 42 or the electromagnetic valve 44 disposed in the flow path 23. can do. That is, when purifying raw water in the water purifier 100, the electromagnetic valve 42 or the electromagnetic valve 42 is smaller than the opening of the smaller one of the electromagnetic valve 41 or the electromagnetic valve 43 disposed in the flow path 13. When the opening degree of any one of the valves 44 is small, the flow rate or flow velocity of the water flowing through the filter tank 20 is suppressed. On the other hand, by adjusting the opening / closing time of the electromagnetic valve 42 or the electromagnetic valve 44 disposed in the flow path 23, the flow rate or flow velocity of the water flowing through the filter tank 20 is suppressed when the raw water is purified in the water purifier 100. It is also possible to do. Thus, the suppression unit may be the electromagnetic valve 42 or the electromagnetic valve 44 disposed in the flow path 23.

  Further, for example, when a difference in shape or the like is provided in the flow path 13 passing through the filter tank 10 and the flow path 23 passing through the filter tank 20, the flow passes through the filter tank 20 when the raw water is purified in the water purifier 100. The flow rate or flow rate of water can be suppressed.

  For example, when the stroke distance of the flow path 23 is longer than the stroke distance of the flow path 13, or the tube diameter of the tubular member constituting the flow path 23 is smaller than the tube diameter of the tubular member constituting the flow path 13. In this case, the friction loss when water flows through the flow path 23 is larger than that of the flow path 13. As a result, when the raw water is purified in the water purifier 100, the flow rate or flow velocity of the water flowing through the filter tank 20 is suppressed. Moreover, when the shape of the tubular member which comprises the flow path 23 is complicated compared with the shape of the tubular member which comprises the flow path 13, ie, the flow path 23 is comprised compared with the tubular member which comprises the flow path 13. When the tubular member has many curved portions, for example, water is prevented from flowing smoothly inside the tubular member constituting the flow path 23. Thus, the suppression unit may be configured by the flow path 23.

  Further, for example, even when the filter tank 10 and the filter tank 20 are different in shape or the like, the flow rate or flow rate of the water flowing through the filter tank 20 can be suppressed when the raw water is purified in the water purifier 100. it can.

  For example, when the filter tank 20 has a substantially cylindrical shape and the distance from the center of the cross section of the filter tank 20 or the filter 21 to the inner wall of the filter tank 20 is relatively small, when purifying raw water in the water purifier 100 The flow rate or flow rate of the water flowing through the filter tank 20 is suppressed. Each of the filter tank 10 and the filter tank 20 has an introduction part for introducing water into the tank and a lead-out part for extracting water from the tank, and a cross-sectional area inside the introduction part of the filter tank 20. Or when the cross-sectional area inside a derivation | leading-out part is comparatively small, when purifying raw | natural water in the water purifier 100, the flow volume or flow velocity of the water which flows through the filter tank 20 is suppressed. Furthermore, the inside of the filter tank 20 may have a shape or a configuration that can restrict the flow of water in the filter tank 20. Thus, the suppression unit may be the filter tank 20.

  When the suppression unit is the electromagnetic valve 42 or the electromagnetic valve 44, when the suppression unit is configured by the flow path 23, or when the suppression unit is the filter tank 20, the water purifier 100 is the raw water in the water purifier 100. It is not necessary to provide the other suppression part utilized only for suppressing the flow volume or flow velocity of the water which flows through the filter tank 20 when purifying. Therefore, the quantity of the components of the water purifier 100 is reduced. As a result, the configuration of the water purifier 100 is simplified.

  In addition, pumps (not shown) may be disposed in the flow path 13 and the flow path 23, respectively. The pump disposed in the flow path 13 forcibly feeds raw water from the main water passage 9 to the flow path 13, for example. Similarly, the pump disposed in the flow path 23 forcibly feeds raw water from the main water passage 9 to the flow path 23, for example. When purifying raw water in the water purifier 100, when the output of the pump disposed in the flow path 23 is lower than the output of the pump disposed in the flow path 13, the flow rate or flow rate of the water flowing through the filter tank 20 is suppressed. Is done. In addition, the pump arrange | positioned in the flow path 23 can send the water which passes the flow path 23 to the ozone fine bubble generator 30. FIG.

  Further, when the water purifier 100 cleans the filter 11 of the filter tank 10 in the water purifier 100, the purified water purified by passing through the filter 21 of the filter tank 20 passes through the filter 11 of the filter tank 10. It is configured. In this case, the purified water passing through the filter tank 10 flows in a direction opposite to the direction in which the raw water passes through the filter tank 10 when the raw water is purified by the filter tank 10 in the water purifier 100.

  Even if the water purifier 100 is a case where the filter 11 of the filter tank 10 is clogged, it is suppressed that the filter 11 of the filter tank 10 and the filter 21 of the filter tank 20 are clogged simultaneously, Raw water can be purified by passing through the filter tank 20. Therefore, even when the filter 11 of the filter tank 10 is clogged, the filtered water purified by passing through the filter 21 of the filter tank 20 is allowed to pass through the filter 11 of the filter tank 10, whereby the filter tank The clogging of the ten filters 11 can be eliminated. Thus, in the water purifier 100, even if the filter 11 of the filter tank 10 is clogged, the filter 11 of the filter tank 10 can be cleaned cleanly.

  In the water purifier 100, the suppression unit is an ozone fine bubble generator 30. The ozone fine bubble generator 30 is arranged on the downstream side of the filter tank 20 with respect to the flow direction of the raw water when the raw water is purified in the water purifier 100 rather than the filter tank 20.

  According to this configuration, when the purified water that has passed through the filter 21 of the filter tank 20 passes through the ozone fine bubble generator 30 as the fine bubble generator, the flow of the purified water is throttled, so that the water flowing through the filter tank 20 is reduced. The flow rate or flow rate is suppressed. Thereby, each filter 11 and the filter 21 of the filter tank 10 and the filter tank 20 which are arranged in parallel are not easily clogged at the same time. That is, the water purifier 100 is configured so that the filter 11 and the filter 21 of the filter tank 10 and the filter tank 20 arranged in parallel do not clog at the same time.

  In the water purifier 100, when the filter 11 of the filter tank 10 is washed in the water purifier 100, the purified water that is purified by the filter tank 20 and mixed with the fine bubbles generated by the ozone fine bubble generator 30 is mixed with the filter tank 10. Is configured to pass through. In this case, the purified water passing through the filter tank 10 flows in a direction opposite to the direction in which the raw water passes through the filter tank 10 when the raw water is purified by the filter tank 10 in the water purifier 100.

  According to this configuration, even if the filter of the filter tank 10 is clogged, the purified water that has been purified by passing through the filter 21 of the filter tank 20 and mixed with fine bubbles is removed from the filter tank 10. By allowing the filter 11 to pass, clogging of the filter 11 in the filter tank 10 can be effectively eliminated. Thus, in the water purifier 100, the filter 11 of the filter tank 10 can be effectively cleaned cleanly.

  In the water purifier 100, the fine bubble generator as the suppression unit is the ozone fine bubble generator 30.

  According to this configuration, the filter 11 of the filter tank 10 can be cleaned more effectively and cleanly by the ozone fine bubbles generated from the ozone fine bubble generator 30.

  The water purifier 100 further includes a water purification tank 12. The water purification tank 12 is disposed downstream of the filter tank 10 with respect to the flow direction of the raw water when the raw water is purified in the water purifier 100. Furthermore, when the water purifier 100 cleans the filter 11 of the filter tank 10 in the water purifier 100, the purified water mixed with fine bubbles purified by the filter tank 20 and generated by the ozone fine bubble generator 30 is purified water. When the raw water is purified by the filter tank 10 in the vessel 100, the raw water passes through the filter tank 10 in a direction opposite to the direction in which the raw water passes through the filter tank 10. Further, when the filter 11 of the filter tank 10 is washed in the water purifier 100, the purified water that is purified by the filter tank 20 and mixed with the fine bubbles generated by the ozone fine bubble generator 30 is stored in the water purification tank 12. It is configured as follows.

  Moreover, when the water purifier 100 wash | cleans the filter 21 of the filter tank 20 after wash | cleaning the filter 11 of the filter tank 10 in the water purifier 100, the purified water with which the fine bubble stored in the water purification tank 12 mixed, The purified water purified by the filter tank 10 is configured to pass through the filter tank 20. In this case, the purified water passing through the filter tank 20 flows in a direction opposite to the direction in which the raw water passes through the filter tank 20 when the raw water is purified by the filter tank 20 in the water purifier 100.

  In the water purifier 100, the water purification tank 12 can store the purified water purified by passing through the filter 11 of the filter tank 10.

  Further, in the water purifier 100, when the filter 11 of the filter tank 10 is washed in the water purifier 100, the purified water mixed with the fine bubbles purified by the filter tank 20 and generated by the ozone fine bubble generator 30 is purified water. When purifying raw water in the vessel 100, the filter tank 10 is configured to pass through the filter tank 10 so that the purified water flows in a direction opposite to the direction in which the raw water passes through the filter tank 10. Further, the water purification tank 12 is disposed on the downstream side of the filter tank 10 with respect to the flow direction of the raw water when the raw water is purified in the water purifier 100. Therefore, when the filter 11 of the filter tank 10 is washed in the water purifier 100, the purified water purified by the filter tank 20 and mixed with fine bubbles flows into the purified water tank 12. Thereby, when the filter 11 of the filter tank 10 is washed in the water purifier 100, the water purification tank 12 can store purified water purified by the filter tank 20 and mixed with fine bubbles.

  In this way, the purified water mixed with the fine bubbles stored in the purified water tank 12 is collected in the purified water tank 12 while the filter 11 of the filter tank 10 is being washed. Further, in the water purifier 100, when the filter 21 of the filter tank 20 is washed after the filter 11 of the filter tank 10 is washed in the water purifier 100, the purified water mixed with the fine bubbles stored in the water purification tank 12 The purified water purified by the filter tank 10 can be passed through the filter 21 of the filter tank 20. In this case, the purified water passing through the filter 21 of the filter tank 20 flows in a direction opposite to the direction in which the raw water passes through the filter 21 of the filter tank 20 when the raw water is purified in the water purifier 100.

  As described above, the water purifier 100 filters purified water that has been purified by passing through the filter 21 of the filter tank 20 and mixed with fine bubbles even when the filter 11 of the filter tank 10 is clogged. By passing through the filter 11 of the tank 10, the filter 11 of the filter tank 10 can be effectively cleaned. Therefore, after the filter 11 of the filter tank 10 is washed in the water purifier 100, the purified water that has been purified by passing through the filter 11 of the washed filter tank 10 is passed through the filter 21 of the filter tank 20. The clogging of the filter 21 of the tank 20 can be effectively eliminated. At this time, since the fine bubbles are mixed in the purified water passing through the filter 21 of the filter tank 20, the filter 21 of the filter tank 20 can be effectively cleaned. Moreover, when the fine bubble containing ozone is mixed in the purified water which passes the filter 21 of the filter tank 20, the filter 21 of the filter tank 20 can be wash | cleaned more effectively and cleanly.

  As mentioned above, according to 1st Embodiment, the water purifier 100 comprised so that the filter 11 and the filter 21 accommodated in the filter tank 10 and the filter tank 20 which were arrange | positioned in parallel, respectively may not be clogged simultaneously. Can be provided.

(Second Embodiment)
FIG. 5 shows a water purifier 200 according to the second embodiment. The water purifier 200 is different from the water purifier 100 of the first embodiment in that the water purifier 200 includes an elution part 6 that elutes antibacterial components.

  The elution part 6 is arrange | positioned upstream from the filter tank 20 regarding the flow direction of raw | natural water in case raw | natural water is purified in the water purifier 200. FIG. The elution part 6 is comprised with the eluent which elutes a silver ion.

  As the elution part 6, for example, an eluent in which silver ion-eluting zeolite is kneaded into polyethylene pellets is used. When water comes into contact with such an eluent, silver ions are eluted from the elution part 6 into the water.

  Silver ions are an example of an antibacterial component. However, examples of the antibacterial component are not limited to silver ions. When the antibacterial component is dissolved in the water supplied by the water purifier, the water in which the substance is dissolved is useful for the members forming the filters 11, 21, the flow path 13, or the flow path 23. Alternatively, the antibacterial component is a useful substance for the user when the user uses water in which the substance is dissolved.

  In addition, the elution part 6 may be arrange | positioned in the flow path 25 or the flow path 26. FIG. Moreover, the elution part 6 may be arrange | positioned at the flow path 13 so that an antimicrobial component may melt | dissolve in the water which passed the filter 11 of the filter tank 10, or passed.

  Since the member forming the flow path 13 or the flow path 23 is always in contact with water, bacteria are present in the flow path 13 or the flow path 23, the member forming the flow path 13 or the flow path 23, or the filters 11 and 21. Easy to breed. When bacteria propagate on the filters 11 and 21, the filters 11 and 21 are clogged, and the water purification performance of the filters 11 and 21 is lowered. Therefore, by disposing the elution part 6 in the flow path 13 or the flow path 23, it is possible to suppress the growth of bacteria due to the sterilization effect by silver ions and to prevent the filters 11 and 21 from being clogged.

  Other configurations of the water purifier 200 are the same as those of the water purifier 100 according to the first embodiment. The description about the other structure of the water purifier 200 is abbreviate | omitted.

  The operation of each solenoid valve or the like when the raw water is purified in the water purifier 200 is the same as that of the water purifier 100 according to the first embodiment.

  The operation of each electromagnetic valve and the like when the filter 11 of the filter tank 10 is washed in the water purifier 200 is the same as that of the water purifier 100 according to the first embodiment.

  In the water purifier 200, the operation of each solenoid valve or the like when the filter 21 of the filter tank 20 is cleaned after the filter 11 of the filter tank 10 is cleaned is the same as that of the water purifier 100 according to the first embodiment.

  As described above, the water purifier 200 includes the elution part 6 that elutes antibacterial components into water. The elution part 6 is arrange | positioned upstream from the filter tank 20 regarding the flow direction of raw | natural water in case raw | natural water is purified in the water purifier 200. FIG.

  According to the water purifier 200, when water passes through the filter tank 20, since the antibacterial component is dissolved in water, the inside of the filter tank 20 can be kept clean by the antibacterial component. Further, when the filter 11 of the filter tank 10 is washed with the purified water purified by the filter tank 20, it can be washed with the purified water in which the antibacterial component is dissolved. Therefore, the filter 11 of the filter tank 10 can be washed more cleanly.

  In addition, when the elution part 6 is arrange | positioned downstream from the filter tank 20 regarding the flow direction of raw water in case the raw water is purified in the water purifier 200, an antibacterial component is in the water which passed the filter tank 20. Since it melt | dissolves, the member of the downstream side from the filter tank 20 can be kept clean with an antibacterial component.

(Third embodiment)
6 and 7 show a water purifier 300 according to the third embodiment. When purifying raw water in the water purifier 300, the raw water passes only through the filter tank 10 out of the filter tank 10 and the filter tank 20. That is, the water purifier 300 is configured so that the raw water passes through the filter tank 20 only when the filter 11 accommodated in the filter tank 10 is washed in the water purifier 300.

  The water purifier 300 according to the third embodiment is a filter only when the filter 11 accommodated in the filter tank 10 is washed in the water purifier including the elution part 6 like the water purifier 200 according to the second embodiment. The raw water passes through the tank 20. The water purifier 300 passes through the filter tank 20 only when the filter 11 accommodated in the filter tank 10 is washed in the water purifier that does not include the elution part 6 like the water purifier 100 according to the first embodiment. It may be configured to do so.

  In the following, when the raw water is purified in the water purifier 300, that is, when the raw water supplied to the filter tank 10 from the main water passage 9 passes through the filter 11, the above-described electromagnetic valves and the like are purified. The operation will be described with reference to FIG.

  When the raw water is purified in the water purifier 300, the flow path 14 is opened by the electromagnetic valve 41 and the electromagnetic valve 42 closes the flow path 24. In this case, the electromagnetic valve 46 may close the flow path 25 or may open the flow path 25. Further, the electromagnetic valve 47 may block the flow path 22 or may open the flow path 22.

  The raw water flowing into the filter tank 10 through the flow path 14 is purified by passing through the filter 11 and becomes purified water. The purified water in the filter tank 10 passes through at least the flow path 15 and the purified water outflow path 8 and flows out of the water purifier 300 when the electromagnetic valve 45 opens the purified water outflow path 8.

  Next, in the water purifier 300, the operation of each electromagnetic valve and the like when the purified water purified by passing through the filter 21 of the filter tank 20 is passed through the filter 11 of the filter tank 10 will be described with reference to FIG. To do.

  When the filter 11 of the filter tank 10 is washed in the water purifier 300, the flow path 14 is closed by the electromagnetic valve 41 and the flow path 24 is opened by the electromagnetic valve 42.

  The purified water in the filter tank 20 passes through the flow path 25, the flow path 26, the flow path 16, and the flow path 15 and passes through the filter 11 of the filter tank 10. However, the purified water in the filter tank 20 does not have to pass through the ozone fine bubble generator 30, that is, the flow path 26 and the flow path 16. Further, the purified water in the filter tank 20 may not pass through the purified water tank 12 and the ozone fine bubble generator 30.

  According to the water purifier 300, the following effects can be obtained regardless of whether the water purifier 300 includes the elution part 6.

  The water purifier 300 is configured such that raw water passes through the filter tank 20 only when the filter 11 of the filter tank 10 is washed. According to this configuration, when the water purifier 300 purifies raw water, for example, the raw water does not pass through the filter tank 20. Thus, the water purifier 300 is configured so that the filters 11 and 21 respectively accommodated in the filter tank 10 and the filter tank 20 arranged in parallel do not clog at the same time. Therefore, even if the filter 11 is clogged, the filter 11 can be washed using the purified water that has passed through the filter tank 20. Therefore, in the water purifier 300, even if the filter 11 of the filter tank 10 is clogged, the filter 11 of the filter tank 10 can be cleaned cleanly.

  According to the water purifier 300, the raw water is less likely to pass through the filter tank 20. Therefore, the lifetime of the filter 21 accommodated in the filter tank 20 can be extended. Further, the volume of the filter 21 accommodated in the filter tank 20 and the volume of the filter tank 20 can be reduced.

  In addition, as shown in FIG. 7, while the water purifier 300 is equipped with the elution part 6, while being able to keep the inside of the filter tank 20 clean, the filter 11 of the filter tank 10 is made by the purified water which the antimicrobial component melt | dissolved. Can be washed. Thereby, while being able to wash | clean the filter 11 more cleanly, the inside of the filter tank 10 and the inside of the filter tank 20 can be kept clean by an antibacterial component.

  On the other hand, the elution part 6 may be arrange | positioned in the downstream of the filter tank 20 in the flow direction of water as shown in FIG. That is, the elution part 6 may be disposed in the flow path 25, the flow path 26, the flow path 16, the flow path 15, or the flow path 22. When the elution part 6 is arrange | positioned in this way, the periphery of the water purification tank 12 can be kept clean, for example.

(Fourth embodiment)
8 and 9 show a water purifier 400 according to the fourth embodiment. When purifying raw water in the water purifier 400, the raw water passes through only the filter tank 20 out of the filter tank 10 and the filter tank 20. That is, the water purifier 400 is configured so that the raw water passes through the filter tank 10 only when the filter 21 accommodated in the filter tank 20 is washed in the water purifier 400.

  For example, the water purifier 400 according to the fourth embodiment is a filter only when the filter 21 accommodated in the filter tank 20 is washed in the water purifier including the elution part 6 like the water purifier 200 according to the second embodiment. The raw water passes through the tank 10.

  As shown in FIG. 8, when raw water is purified in the water purifier 400, the flow path 14 is closed by the electromagnetic valve 41 and the electromagnetic valve 42 opens the flow path 24. The raw water flowing into the filter tank 20 through the flow path 24 is purified by passing through the filter 21 and becomes purified water. The purified water in the filter tank 20 passes through at least the flow path 25 and flows out of the water purifier 400 when the electromagnetic valve 45 opens the purified water outflow path 8.

  In this case, the electromagnetic valve 46 may close the flow path 25 so that the ozone fine bubble generator 30 does not pass through the purified water, and the flow path for passing the ozone fine bubble generator 30 through the purified water. 25 may be opened. Moreover, the water purified by passing through the filter tank 20 may or may not pass through the water purification tank 12. For example, when the flow path 22 is connected to the flow path 16 without passing through the water purification tank 12, the purified water that has passed through the filter 21 of the filter tank 20 flows through the purified water outflow path 8 without being stored in the water purification tank 12. be able to.

  As shown in FIG. 9, when the filter 21 of the filter tank 20 is washed in the water purifier 400, the flow path 24 is closed by the electromagnetic valve 42 and the flow path 14 is opened by the electromagnetic valve 41. The purified water that has passed through the filter tank 10 passes through the filter 15 of the filter tank 20 through the flow path 15, the flow path 16, the flow path 26, and the flow path 25 or through the flow path 15, the flow path 22, and the flow path 25. To do. The water that has washed the filter 21 is drained to the outside of the water purifier 400 through the drainage channel 29. However, when the filter 21 is washed, it is only necessary that the purified water that has passed through the filter tank 10 passes through the filter 21 of the filter tank 20 through at least the flow path 15 and the flow path 25.

  According to the water purifier 400, the raw water is less likely to pass through the filter tank 10 regardless of whether or not the water purifier 400 includes the elution part 6. Therefore, the life of the filter 11 accommodated in the filter tank 10 can be extended. Further, the volume of the filter 11 accommodated in the filter tank 10 and the volume of the filter tank 10 can be reduced.

  In the water purifier 400, the elution part 6 may be disposed in the flow path 14, the flow path 15, the flow path 25, the flow path 26, the flow path 16, the flow path 15, or the flow path 22.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

6: Elution part, 10: Filter tank, 11: Filter, 20: Filter tank, 21: Filter, 30: Ozone fine bubble generator, 100, 200, 300, 400: Water purifier

Claims (4)

Comprising a first filter tank and a second filter tank each containing a filter for purifying the raw water by allowing the raw water to pass through;
A water purifier in which the first filter tank and the second filter tank are arranged in parallel,
When purifying raw water in the water purifier, the water purifier further includes a suppressing unit that suppresses a flow rate or a flow rate of the water flowing through the second filter tank among the water flowing through the first filter tank and the second filter tank. ,
The said suppression part is a water purifier which is a fine bubble generator arrange | positioned rather than a said 2nd filter tank regarding the flow direction of raw | natural water when raw | natural water is purified in the said water purifier. In the case of washing the filter accommodated in the first filter tank in the water purifier, the purified water mixed with the fine bubbles purified by the second filter tank and generated in the fine bubble generator, In the water purifier, when the raw water is purified by the first filter tank, the raw water passes through the first filter tank in a direction opposite to the direction through which the raw water passes through the first filter tank. The water purifier according to claim 1 . The fine bubble generator is an ozone fine bubble generator,
The water purifier according to claim 1 or 2 . Regarding the flow direction of the raw water when the raw water is purified in the water purifier, the water purifier further comprises a water purification tank disposed downstream of the first filter tank,
In the case of washing the filter accommodated in the first filter tank in the water purifier, the purified water mixed with the fine bubbles purified by the second filter tank and generated in the fine bubble generator, In the water purifier, when the raw water is purified by the first filter tank, the raw water passes through the first filter tank in a direction opposite to the direction in which the raw water passes through the first filter tank, and Configured to pool,
When the filter housed in the second filter tank is washed after washing the filter housed in the first filter tank in the water purifier, the fine bubbles stored in the water purification tank are When the mixed purified water and the purified water purified by the first filter tank purify the raw water by the second filter tank in the water purifier, the direction opposite to the direction in which the raw water passes through the second filter tank The water purifier according to claim 2 or 3 , wherein the water purifier is configured to pass through the second filter tank in the direction of.

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