JP2018080481A - Water section appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water section appliance capable of suppressing back flow of modified water more surely.SOLUTION: A water section appliance comprises a modified water generator for modifying the nature of water and generating modified water, a water discharge part that is installed on the downstream side of the modified water generator and that discharges modified water, and a back-flow prevention device installed on the upstream side of the modified water generator. The back-flow prevention device comprises: a first flow path part; a second flow path part installed on the downstream side of the first flow path part; an intermediate chamber installed between the first flow path part and the second flow path part; a first non-return valve installed between the first flow path part and the intermediate chamber; a second non-return valve installed between the second flow path part and the intermediate chamber; a discharge port for discharging water in the intermediate chamber; a relief valve for opening/closing the discharge port; and a drive part for opening the discharge port by operating the relief valve when a differential pressure is generated between the first flow path part and the intermediate chamber.SELECTED DRAWING: Figure 1

Description

  Aspects of the present invention generally relate to watering devices.

  There is known a water-around device equipped with a reforming water generator that generates reforming water such as alkaline ionized water. In such a water peripheral device, a check valve is provided on the upstream side of the reforming water generator in order to prevent the reforming water from flowing back to the clean water side.

  However, in a water-equipment equipped with a check valve, if negative pressure is generated upstream of the check valve in a state where dust is caught in the check valve, or if the reverse pressure is detected from the downstream side of the check valve. When pressure is generated, the original function of the check valve is not fulfilled, and the reformed water generated by the reformed water generator may flow back to the water supply side.

  For this reason, it is desired that the back-flow device provided with the reforming water generator can more reliably suppress the backflow of the reforming water.

JP-T 63-501815

  This invention is made | formed based on recognition of this subject, and it aims at providing the water | moisture-content apparatus which can suppress the backflow of reforming water more reliably.

  According to a first aspect of the present invention, there is provided a reformed water generator for reforming the properties of water supplied from the upstream to generate reformed water, the downstream of the reformed water generator, and the reformed water And a backflow prevention device provided upstream of the reformed water generator, wherein the backflow prevention device includes a first flow path portion and a downstream of the first flow path portion. A second flow path section provided in the first flow path section, an intermediate chamber provided between the first flow path section and the second flow path section, and provided between the first flow path section and the intermediate chamber. Provided between the first check valve that partitions the first flow path portion and the intermediate chamber, the second flow path portion and the intermediate chamber, and the second flow path portion and the intermediate chamber. A differential pressure between the second check valve, the discharge port for discharging the water in the intermediate chamber, the relief valve for opening and closing the discharge port, and the first flow path portion and the intermediate chamber. When it occurs Is water around equipment and having a driving unit for opening the outlet by operating the relief valve.

  According to this water-circulating device, the backflow prevention device is provided upstream of the reforming water generator, and when the differential pressure is generated between the first flow path portion and the intermediate chamber, the drive portion operates the relief valve. To open the outlet. As a result, since air is taken into the intermediate chamber, for example, even when dust biting occurs in the first check valve, the reformed water is prevented from flowing back upstream from the first check valve. can do. Further, for example, even when dust biting occurs in the second check valve, the water that has flowed back from the second check valve is discharged from the discharge port to the outside of the intermediate chamber. Backflow upstream from the stop valve can be suppressed. Accordingly, it is possible to provide a water-around device that can more reliably suppress the backflow of the reformed water.

  According to a second aspect of the present invention, there is provided the water-surrounding device according to the first aspect, wherein the discharge port is in communication with the outside, and further includes a water receiving portion for receiving water discharged from the discharge port. is there.

  According to this water-circulating device, since the water receiving part for receiving the water discharged from the backflow prevention device is provided, for example, when the backflow prevention device is installed in the counter or cabinet of the kitchen, it is discharged from the discharge port. The discharged water can be prevented from being discharged into the counter or cabinet. Further, for example, the handleability of the backflow prevention device can be improved as compared with the case where the discharge port is directly connected to the drain pipe. For example, clogging of the discharge port due to dirt or the like can be suppressed, and air can be easily taken into the intermediate chamber.

  According to a third aspect of the present invention, in the second aspect of the invention, the water-around device further includes a water level detection unit that detects a water level in the water receiving unit.

  According to this water-circulating device, since the water level detection unit that detects the water level in the water receiving unit is further provided, the water level of the water receiving unit can be detected and leakage from the water receiving unit can be suppressed.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the flow path is provided on a downstream side of the backflow prevention device and opens and closes a flow path between the backflow prevention device and the water discharger. A water-circulating device further comprising a valve.

  According to this water-circulating device, by closing the flow path valve, for example, when dust biting occurs in the second check valve, it remains in the flow path between the second check valve and the water discharger. It is possible to prevent the water from being discharged from the water discharge part.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the backflow prevention device is provided in a concealed portion.

  According to this water-surrounding device, for example, the design of the entire water-surrounding device can be improved by providing the backflow prevention device in a concealed part such as in a cabinet under the kitchen counter.

  According to the aspect of the present invention, a water-circulating device that can more reliably suppress the backflow of reformed water is provided.

It is a side view showing the water | moisture-content apparatus which concerns on embodiment. FIG. 2A and FIG. 2B are cross-sectional views showing a backflow prevention device. It is a block diagram showing the water around apparatus which concerns on embodiment. It is a block diagram showing the modification of the water around apparatus which concerns on embodiment. It is a side view showing the modification of the water around apparatus which concerns on embodiment. It is a block diagram showing the modification of the water around apparatus which concerns on embodiment.

Embodiments of the present invention will be described below with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.
FIG. 1 is a side view illustrating a water-circulating device according to an embodiment.
As shown in FIG. 1, the water surrounding device 10 includes a reformed water generator 12, a faucet body 14, a backflow prevention device 16, a water receiver 18, and a water level detector 20.

  The reformed water generator 12 generates reformed water from the supplied water by reforming the properties of the water supplied from the upstream. The reformed water generator 12 is connected to the water supply source WS via the backflow prevention device 16. The water supply source WS is, for example, a water supply pipe or a hot water supply pipe. For example, tap water (clean water) is supplied to the reformed water generator 12. The reformed water generator 12 generates, for example, alkaline ionized water or acidic water from the tap water as the reformed water by electrolyzing the tap water.

  The faucet body 14 includes a water discharge unit 30, a first flow rate adjustment unit 31, and a second flow rate adjustment unit 32. The water discharger 30 is provided on the downstream side of the reforming water generator 12 and has a water discharge port 30a for discharging the reforming water. For example, the water discharger 30 discharges the reformed water and the raw water. The raw water is water before reforming, for example, tap water. The water discharger 30 discharges, for example, alkaline ionized water or acidic water from the water discharge port 30a and water tap water from the water discharge port 30a.

  The first flow rate adjusting unit 31 is used for switching the raw water discharge water. The second flow rate adjustment unit 32 is used to switch the reforming water discharge water. By operating the first flow rate adjustment unit 31, tap water is discharged from the water discharge port 30a, and by operating the second flow rate adjustment unit 32, alkaline ionized water or acidic water is discharged from the water discharge port 30a. Moreover, the 1st flow volume adjustment part 31 adjusts the flow volume and temperature of the raw | natural water discharged while switching the raw | natural water discharge water, for example. For example, the second flow rate adjusting unit 32 switches the reforming water discharge water and adjusts the flow rate of the reforming water discharged.

  For example, the first flow rate adjustment unit 31 and the second flow rate adjustment unit 32 may be provided separately from the faucet body 14. The faucet body 14 only needs to have at least the water discharger 30.

  The backflow prevention device 16 is provided on the upstream side of the reforming water generator 12. The backflow prevention device 16 is provided between the reformed water generator 12 and the water supply source WS. When the negative pressure is generated on the primary side (water supply source WS side), the backflow prevention device 16 closes the internal flow path, discharges the internal water, and takes in air into the primary side. Separate the next side with an air layer. In other words, the backflow prevention device 16 cuts off the primary side and the secondary side when negative pressure is generated on the primary side. Thereby, the backflow prevention device 16 prevents the reforming water generated by the reforming water generator 12 from flowing back to the primary side when a negative pressure is generated on the primary side.

  The water receiver 18 is provided below the backflow prevention device 16 and receives water discharged from the backflow prevention device 16.

  The water level detection unit 20 detects the water level in the water receiving unit 18. The water level detection unit 20 includes, for example, a float that moves up and down according to the water level in the water receiving unit 18, and detects the water level in the water receiving unit 18 based on the position of the float. The water level detection unit 20 detects the water level indirectly from a detector that detects the water level by measuring the distance to the water surface using, for example, infrared light or ultrasonic waves, or a change in the weight of the water receiving unit 18. It may be a detector. The water level detector 20 may be any detector that can detect the water level in the water receiver 18.

  The water surrounding device 10 is used in the system kitchen 2, for example. The system kitchen 2 includes, for example, a counter 3, a sink 4 that is recessed downward from the counter 3, and a cabinet 5 that is provided below the counter 3 and the sink 4. The cabinet 5 supports the counter 3 and the sink 4 and is formed in a hollow shape so that articles can be stored in the internal space. The cabinet 5 may be a drawer type or a door type.

  The faucet body 14 is provided, for example, on the counter 3 or in the sink 4, and discharges raw water or reformed water from the water outlet 30 a toward the sink 4. The sink 4 has a drain port (not shown) and drains water discharged from the faucet body 14 to an external drain pipe or the like through the drain port.

  For example, the reformed water generator 12, the backflow prevention device 16, the water receiver 18, and the water level detector 20 are provided in the cabinet 5. As described above, the reformed water generator 12, the backflow prevention device 16, the water receiver 18, and the water level detector 20 are provided in a portion concealed by the cabinet 5 or the like. In other words, in the water surrounding device 10, the part other than the faucet body 14 is provided in the concealed part. Thereby, the designability of the water periphery apparatus 10 whole can be improved.

  The water-surrounding device 10 is not limited to the system kitchen 2 and may be used for a bathroom vanity, for example. For example, the faucet body 14 may be configured to discharge raw water or reformed water toward the wash bowl of the vanity. The water-surrounding device 10 may be applied to, for example, a device that discharges water in a bathtub or a washing place in a bathroom, or may be applied to a sanitary washing device that is attached to a toilet in a toilet.

FIG. 2A and FIG. 2B are cross-sectional views showing a backflow prevention device.
As shown in FIGS. 2A and 2B, the backflow prevention device 16 has a main body 40. The main body 40 includes a first flow path portion 41, a second flow path portion 42, an intermediate chamber 43, and a discharge port 44. The second flow path part 42 is provided downstream of the first flow path part 41. The intermediate chamber 43 is provided between the first flow path portion 41 and the second flow path portion 42.

  The discharge port 44 is provided in the intermediate chamber 43 and discharges water in the intermediate chamber 43. The discharge port 44 is provided, for example, at the lower end of the intermediate chamber 43 (main body portion 40), and opens the intermediate chamber 43 downward. Further, the discharge port 44 is provided, for example, in the approximate center of the intermediate chamber 43 in a top view.

  The discharge port 44 communicates with the outside. The water receiving portion 18 is provided below the discharge port 44 and receives water discharged from the discharge port 44. The water receiving part 18 is, for example, a container shape having an upper opening. The volume of the water receiver 18 is larger than the volume of the intermediate chamber 43. The water receiver 18 is set to a volume that can receive the water discharged from the intermediate chamber 43 several times, for example. The water receiver 18 stores the water discharged from the discharge port 44 inside and naturally evaporates it. Thereby, even when water is discharged from the intermediate chamber 43, it is possible to prevent the user from taking extra time. For example, a pipe or the like may be connected to the discharge port 44 so that water discharged from the discharge port 44 is drained from the pipe to an external drain pipe. In this case, the water receiver 18 may be omitted.

  The backflow prevention device 16 further includes a first check valve 51, a second check valve 52, a relief valve 53, and a drive unit 54. The first check valve 51 is provided between the first flow path portion 41 and the intermediate chamber 43 and partitions the first flow path portion 41 and the intermediate chamber 43. The second check valve 52 is provided between the second flow path portion 42 and the intermediate chamber 43, and partitions the second flow path portion 42 and the intermediate chamber 43.

  The relief valve 53 opens and closes the discharge port 44. The relief valve 53 is provided in the intermediate chamber 43, for example, and closes the discharge port 44 from above.

  The drive unit 54 interlocks the first check valve 51 and the second check valve 52 with the relief valve 53, and when the differential pressure is generated between the first flow path unit 41 and the intermediate chamber 43, the drive unit 54 is released. The valve 53 is operated to open the discharge port 44.

  The main body 40 further includes a connecting path 45, for example. The connection path 45 is provided above the intermediate chamber 43 and is connected to the first flow path portion 41.

  The drive unit 54 includes, for example, a diaphragm 55 and a connection member 56. The diaphragm 55 is provided between the intermediate chamber 43 and the connection path 45 and partitions the intermediate chamber 43 and the connection path 45. The diaphragm 55 includes, for example, a shaft portion 55a and a film-like portion 55b. The shaft portion 55a is provided, for example, immediately above the relief valve 53, and is supported by the main body portion 40 so as to be movable in the vertical direction. The film-like portion 55b is formed in a film shape by an elastic body such as rubber. The film-like portion 55 b is provided around the shaft portion 55 a and closes the opening that allows the intermediate chamber 43 and the connection path 45 to communicate with each other. The connection member 56 connects the shaft portion 55 a of the diaphragm 55 and the relief valve 53. For the connection member 56, for example, a metal shaft, a ball chain, or a wire is used.

  In the backflow prevention device 16, when the primary pressure of the water supply source WS is applied to the first flow path portion 41 side, as shown in FIG. 2A, the first check valve 51 and the second check valve 52. Opens. At this time, the diaphragm 55 is deflected downward under the primary pressure, and the relief valve 53 closes the discharge port 44. Thereby, the raw water supplied from the water supply source WS flows downstream from the second flow path portion 42 and is supplied to the reformed water generator 12.

  On the other hand, in the backflow prevention device 16, when a negative pressure is applied to the first flow path portion 41 side, the first check valve 51 and the second check valve 52 are closed as shown in FIG. . When the diaphragm 55 receives the negative pressure and bends upward, the relief valve 53 moves upward via the connection member 56, and the relief valve 53 opens the discharge port 44. Thereby, when a differential pressure is generated between the first flow path portion 41 and the intermediate chamber 43, the first flow path portion 41 and the second flow path are caused by the first check valve 51 and the second check valve 52. The flow path between the first and second flow paths is closed, the discharge port 44 is opened, the water in the intermediate chamber 43 is discharged, and the first flow path section 41 and the second flow path section 42 are separated by the air layer. . Thereby, also when a negative pressure generate | occur | produces on the primary side etc., the backflow to the upper water side of reformed water can be suppressed. The backflow prevention device 16 is a so-called decompression type backflow preventer.

FIG. 3 is a block diagram illustrating a water-related device according to the embodiment.
As shown in FIG. 3, the first flow rate adjustment unit 31 of the faucet body 14 is connected to a water supply source WS via a water supply pipe 61 and a hot water supply pipe 62. Water and hot water are supplied to the first flow rate adjusting unit 31 via a water supply pipe 61 and a hot water supply pipe 62. The 1st flow volume adjustment part 31 adjusts each flow volume of water and hot water according to a user's operation, mixes water and hot water, and supplies them to the water discharging part 30. As a result, the raw water whose flow rate and temperature are adjusted is discharged from the water discharge port 30 a of the water discharge unit 30.

  Moreover, as shown in FIG. 3, the water surrounding device 10 includes, for example, a control unit 70, a first flow path valve 71, a second flow path valve 72 (flow path valve), an operation unit 73, and a flow rate. A sensor 74 and a notification unit 75 are further provided. The control unit 70 controls the operation of each unit of the water-surrounding device 10.

  The first flow path valve 71 is provided on the upstream side of the reforming water generator 12 and opens and closes a flow path for supplying raw water to the reforming water generator 12. The first flow path valve 71 is connected to the water supply pipe 61 and the water supply source WS via the branch pipe 63. The first flow path valve 71 is provided between the branch pipe 63 and the backflow prevention device 16. Thereby, raw water is supplied to the backflow prevention device 16 and the reformed water generator 12 by opening the first flow path valve 71. For example, the first flow path valve 71 prevents the primary pressure of the water supply source WS from being constantly applied to the backflow prevention device 16 and the reformed water generator 12.

  The 2nd flow path valve 72 is provided in the downstream of the backflow prevention apparatus 16, and opens and closes the flow path between the backflow prevention apparatus 16 and the spout 30a. In this example, the second flow path valve 72 is provided downstream of the reforming water generator 12. For example, the second flow path valve 72 may be provided between the backflow prevention device 16 and the reformed water generator 12. The position of the second flow path valve 72 may be an arbitrary position downstream of the backflow prevention device 16.

  The first flow path valve 71 and the second flow path valve 72 are electrically connected to the control unit 70. The opening and closing of the first flow path valve 71 and the second flow path valve 72 is controlled by the control unit 70. That is, in this example, the first flow path valve 71 and the second flow path valve 72 are so-called electromagnetic valves. The first flow path valve 71 and the second flow path valve 72 are not limited to this, and may be valves that are manually switched.

  The controller 70 closes the first flow path valve 71 and the second flow path valve 72 when the reforming water is not discharged. Then, the control unit 70 operates the reforming water generator 12 to open the first flow path valve 71 and the second flow path valve 72 when the reforming water is generated and discharged from the spout 30a. . The controller 70 switches between opening and closing of the first flow path valve 71 and the second flow path valve 72 in conjunction with the generation of the reformed water by the reformed water generator 12. Thus, the 1st flow path valve 71 and the 2nd flow path valve 72 are electromagnetic valves which interlock | cooperate with the reforming water generator 12, for example. Note that the first flow path valve 71 and the second flow path valve 72 do not necessarily need to be linked to the operation of the reforming water generator 12. For example, even when the first flow path valve 71 and the second flow path valve 72 are operated in order to pass raw water through the flow path on the reformed water generator 12 side while the reformed water generator 12 is stopped. Good.

  The second flow rate adjustment unit 32 of the faucet body 14 is connected to the downstream of the second flow path valve 72 and is connected to the water supply pipe 61 downstream of the first flow rate adjustment unit 31 via the branch pipe 64. . The first flow rate adjusting unit 31 suppresses the water flowing in from the second flow rate adjusting unit 32 side from flowing out to the upstream side of the first flow rate adjusting unit 31. As a result, by opening the second flow path valve 72 and the second flow rate adjustment unit 32, the reformed water generated by the reformed water generator 12 is discharged from the water discharge port 30 a of the water discharge unit 30. In this example, the first flow rate adjusting unit 31 is provided between the branch pipe 63 and the branch pipe 64. The position of the 1st flow volume adjustment part 31 is not restricted to this, For example, you may provide upstream from the branch piping 63, and you may provide downstream from the branch piping 64. The position of the 1st flow volume adjustment part 31 can be changed suitably.

  The operation unit 73 is electrically connected to the control unit 70. The operation unit 73 inputs various operation instructions to the control unit 70 in accordance with a user operation. The operation unit 73 inputs, for example, water discharged from alkaline ion water or water discharged from acidic water, and pH values of alkali ion water or acidic water to be discharged to the control unit 70. Note that the input of an instruction from the operation unit 73 to the control unit 70 may be wired or may be performed wirelessly.

  The flow rate sensor 74 is provided on the upstream side of the reforming water generator 12 and measures the flow rate of water supplied to the reforming water generator 12. The flow rate sensor 74 is electrically connected to the control unit 70 and inputs a flow rate measurement result to the control unit 70.

  The notification unit 75 performs notification when the water level detection unit 20 detects that the water level in the water receiving unit 18 has reached the upper limit. The water level detection unit 20 and the notification unit 75 are electrically connected to the control unit 70. The water level detection unit 20 inputs the detection result of the water level in the water receiving unit 18 to the control unit 70. When the detection result of the water level detection unit 20 reaches the upper limit, the control unit 70 operates the notification unit 75 to notify the user or the like that the water level in the water receiving unit 18 has reached the upper limit. For example, the notification unit 75 notifies a user or the like by turning on a lamp or outputting sound. The notification mode of the notification unit 75 may be any mode capable of reporting that the water level in the water receiving unit 18 has reached the upper limit. The alerting | reporting part 75 may be arbitrary members according to the alerting | reporting aspect, such as a light emitting element, a speaker, or a display apparatus, for example.

  The reformed water generator 12 has an electrolytic cell 80 and a solenoid valve 82. Inside the electrolytic cell 80, an anode plate and a cathode plate are provided. The electrolytic cell 80 is electrically connected to the control unit 70. The electrolytic cell 80 electrolyzes tap water flowing inside based on a signal transmitted from the control unit 70. Thereby, the electrolytic cell 80 produces | generates alkaline ion water and acidic water from a tap water as reforming water.

  The electromagnetic valve 82 is connected to the electrolytic bath 80 and is connected to a water discharge port 33 provided in the faucet body 14. The electromagnetic valve 82 is electrically connected to the control unit 70 and opens and closes based on the control of the control unit 70.

  The controller 70 opens the electromagnetic valve 82 when the electrolytic cell 80 operates. When the alkaline water is discharged from the operation unit 73, the electrolytic cell 80 sends the alkaline ion water generated by electrolysis to the water outlet 30a, and discharges water from the water outlet 30a and is generated by electrolysis. Acidic water is sent to the water discharge port 33 and discharged from the water discharge port 33 to the sink 4 or the like. On the contrary, when water discharge of acidic water is instructed from the operation unit 73, the electrolytic cell 80 sends acid water generated by electrolysis to the water discharge port 30a and discharges water from the water discharge port 30a and is generated by electrolysis. The alkaline ionized water is sent to the water discharge port 33 and discharged from the water discharge port 33 to the sink 4 or the like.

  The drain port 33 is not necessarily provided integrally with the faucet body 14 and may be provided separately from the faucet body 14.

Next, the operation of the water surrounding device 10 according to the present embodiment will be described.
When the control unit 70 of the water-circulating device 10 is instructed by the user to discharge alkaline ionized water from the operation unit 73, the first flow path valve 71 and the second flow path valve 72 are opened from the closed state. Switch to. Thereafter, the user operates the second flow rate adjustment unit 32 to open the second flow rate adjustment unit 32, whereby raw water is supplied to the reformed water generator 12.

  When the user opens the second flow rate adjustment unit 32 and detects that the raw water is supplied to the reformed water generator 12 by the flow rate sensor 74, the control unit 70 operates the electrolytic cell 80 to electrolyze tap water. And the electromagnetic valve 82 is opened. As a result, alkaline ionized water is discharged from the water discharge port 30 a and acidic water is discharged from the water discharge port 33.

  For example, the control unit 70 operates the electrolytic cell 80 when the flow sensor 74 detects that the user has closed the second flow rate adjusting unit 32 or when a predetermined time has elapsed since the operation of the electrolytic cell 80 started. Is closed, the electromagnetic valve 82 is closed, and the first flow path valve 71 and the second flow path valve 72 are switched from the open state to the closed state.

  In the water-circulating device 10 according to the present embodiment, the backflow prevention device 16 is provided upstream of the reforming water generator 12 and is driven when a differential pressure is generated between the first flow path portion 41 and the intermediate chamber 43. The part 54 operates the relief valve 53 to open the discharge port 44. Thereby, since air is taken into the intermediate chamber 43, for example, even when dust biting occurs in the first check valve 51, the reforming water flows back upstream from the first check valve 51. This can be suppressed. Further, for example, even when dust biting occurs in the second check valve 52, the water that has flowed back from the second check valve 52 is discharged from the discharge port 44 to the outside of the intermediate chamber 43, so that the reforming water Can be prevented from flowing back upstream from the first check valve 51. Therefore, it is possible to provide the water-around device 10 that can more reliably suppress the backflow of the reformed water.

  Moreover, in the water surrounding device 10, since the water receiving part 18 which receives the water discharged | emitted from the backflow prevention apparatus 16 is provided, the backflow prevention apparatus 16 was installed in the counter 3 or the cabinet 5 of the system kitchen 2, for example. In this case, it is possible to prevent water discharged from the discharge port 44 from being discharged into the counter 3 or the cabinet 5. Further, for example, the handleability of the backflow prevention device 16 can be improved as compared with the case where the discharge port 44 is directly connected to the drain pipe. For example, clogging of the discharge port 44 due to dirt or the like can be suppressed, and air can be easily taken into the intermediate chamber 43.

  Moreover, since the water surrounding device 10 is further provided with the water level detection part 20 which detects the water level in the water receiving part 18, the water level of the water receiving part 18 is detected and water leakage from the water receiving part 18 is suppressed. Can do. Moreover, the alerting | reporting part 75 is provided, and based on the detection result of the water level detection part 20, by notifying a user etc. that the water level in the water receiving part 18 has reached the upper limit, water leakage from the water receiving part 18 is prevented. It can suppress more reliably.

  Further, in the water-circulating device 10, by closing the second flow path valve 72, a negative pressure is generated on the primary side, the discharge port 44 of the backflow prevention device 16 is opened, and the downstream side of the second check valve 52 is at the downstream side. In the opened state, when dust biting or the like occurs in the second check valve 52, the water remaining in the flow path between the second check valve 52 and the water discharger 30 is discharged from the water discharger 30. It can suppress discharging from the water port 30a.

  Moreover, in the water-surrounding device 10, for example, by providing the backflow prevention device 16 in a concealed part such as the inside of the cabinet 5 provided under the counter 3 of the system kitchen 2, the design of the entire water-surrounding device 10 is improved. Can be improved.

  Moreover, the backflow prevention device 16 is provided so as to be directly connected to a flow path extending from the water supply source WS. In other words, an edge-cut tank or the like is not provided in the flow path extending from the water supply source WS to the backflow prevention device 16. As described above, since it is not necessary to provide a tank or the like that is edge-cut, the backflow of the reforming water can be prevented with a more compact configuration.

FIG. 4 is a block diagram illustrating a modified example of the water-circulating device according to the embodiment.
As illustrated in FIG. 4, in this example, the reformed water generator 12 further includes an additive supply unit 84. The additive supply unit 84 is provided on the upstream side of the electrolytic cell 80, and supplies the additive to the raw water supplied to the electrolytic cell 80. The additive supply unit 84 is electrically connected to the control unit 70 and operates based on the control of the control unit 70. The additive supply unit 84 supplies, for example, calcium to raw water as an electrolysis accelerator (additive). Thereby, for example, strong alkaline ionized water having a pH value of 10 or more can be generated in the electrolytic cell 80.

  As described above, the reforming water generator 12 may include the additive supply unit 84 and generate the reforming water by supplying the additive from the additive supply unit 84 to the raw water. In this case, the reformed water may deviate from the water quality standard for clean water. In such a case, it is more effective to provide the backflow prevention device 16 as described above and suppress the backflow of the reforming water. Even when strong alkaline ionized water or acidic water with high acidity is generated as the reformed water, the backflow of the reformed water can be appropriately suppressed, and the influence on the clean water can be appropriately suppressed.

  In the said embodiment, the reformed water generator 12 which produces | generates alkaline ion water and acidic water as reformed water is shown. The reformed water generator 12 is not limited to this. For example, the reformed water generator 12 is configured to generate a solution containing hypochlorous acid as reformed water by electrolyzing tap water, or sodium hydrogen carbonate or carbon dioxide gas ( A configuration in which carbonated water is generated as reformed water by supplying carbon dioxide) to the raw water as an additive may be used.

  The reforming water may be a liquid containing metal ions such as silver ions and copper ions. Alternatively, a liquid containing electrolytic chlorine or ozone may be used. The reformed water generator 12 may have any configuration that reforms raw water to generate water having a property different from that of the raw water.

  In the above embodiment, the second flow path valve 72 of the electromagnetic valve is provided. For example, the second flow rate adjusting unit 32 that is manually operated may be used as the second flow path valve. However, by providing the second flow path valve 72 of the electromagnetic valve as described above, and providing the second flow path valve 72 in conjunction with the reforming water generator 12, for example, forgetting to close by manual operation is suppressed. Can do. When the second flow rate adjusting unit 32 is forgotten to be closed and the discharge port 44 is opened, it is possible to more reliably prevent water from being discharged from the water discharge port 30a.

  In the above embodiment, the second flow rate adjustment unit 32 of the faucet body 14 is arranged on the downstream side of the reformed water generator 12. For example, the second flow rate adjustment unit 32 may be provided on the upstream side of the backflow prevention device 16. In this case, the manually operated second flow rate adjustment unit 32 may be used as the first flow path valve 71.

  In the above embodiment, the raw water and the reformed water are discharged from the same outlet 30a. However, the raw water may be discharged from a different outlet from the reformed water. Moreover, the water | moisture-content apparatus 10 is not restricted to the structure which can discharge raw water and reformed water, For example, the structure which discharges only reformed water may be sufficient.

FIG. 5 is a side view illustrating a modification of the water-circulating device according to the embodiment.
As shown in FIG. 5, the watering device 100 includes a tip branching tool 102. Note that components that are substantially the same in function and configuration as those in the above embodiment are given the same reference numerals, and detailed descriptions thereof are omitted.

  The tip branching tool 102 is attached to the water discharge port 30 a of the water discharge unit 30 of the faucet body 14. The tip branching tool 102 is connected to the backflow prevention device 16 and the reformed water generator 12 through a pipe such as a flexible tube. In the water-circulating device 100, the reformed water generator 12 and the backflow prevention device 16 are provided downstream of the first flow rate adjustment unit 31 of the faucet body 14. Raw water is supplied to the reformed water generator 12 and the backflow prevention device 16 via the faucet body 14 and the tip branching tool 102.

  The reforming water generator 12 is connected to the tip branching tool 102 via a pipe such as a flexible tube. The reforming water generator 12 returns the generated reforming water to the tip branching tool 102. The tip branching tool 102 selectively switches between the raw water and the reformed water by switching the path of the raw water supplied from the faucet body 14 to discharge water.

  Further, in the water peripheral device 100, the reformed water generator 12 and the backflow prevention device 16 are provided on the counter 3.

  The reformed water generator 12 and the backflow prevention device 16 may be provided in the cabinet 5 as in the above embodiment. However, when the reforming water generator 12 and the backflow prevention device 16 are connected to the tip branching device 102, the tip water branching device 102 is provided by providing the reforming water generator 12 and the backflow prevention device 16 on the counter 3. Can be easily connected. For example, when retrofitting the water-use device 100 to the existing system kitchen 2, the water-use device 100 can be easily attached without requiring processing of the counter 3 or the cabinet 5.

FIG. 6 is a block diagram illustrating a modification of the water-circulating device according to the embodiment.
As illustrated in FIG. 6, the tip branching tool 102 includes a flow path switching valve 110, a water discharge port 112, and a water discharge port 114. The flow path switching valve 110 is connected to the water outlet 30 a of the water discharger 30, the first flow path valve 71, and the water outlet 112. The flow path switching valve 110 switches between a path for supplying the raw water supplied from the water outlet 30 a to the first flow path valve 71 and a path for supplying the raw water to the water outlet 112. The flow path switching valve 110 switches each path by manual operation, for example. In other words, the flow path switching valve 110 is a three-way valve.

  The flow path switching valve 110 is switched to the water outlet 112 side. Thereby, raw | natural water is discharged from the water discharge port 112 of the front-end | tip branch tool 102. FIG. On the other hand, the flow path switching valve 110 is switched to the first flow path valve 71 side. Thereby, the raw water is supplied to the reformed water generator 12.

  The electrolytic tank 80 of the reformed water generator 12 is connected to the water discharge port 112 via the second flow path valve 72 and is connected to the water discharge port 114 via the electromagnetic valve 82. As a result, the reformed water is discharged from the water outlet 112 of the tip branching tool 102 and unnecessary water such as acidic water is discharged from the water outlet 114 to the sink 4 or the like.

  Also in this water-circulating device 100, by providing the backflow prevention device 16 upstream of the reforming water generator 12, the backflow of reforming water can be more reliably suppressed as in the above embodiment. As described above, the branching of the raw water to the reforming water generator 12 may be performed on the downstream side of the first flow rate adjusting unit 31, or as described with reference to FIG. May also be performed upstream.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. As long as the features of the present invention are provided, those skilled in the art appropriately modified the design of the above-described embodiments are also included in the scope of the present invention. For example, the shape, dimensions, material, arrangement, and the like of each element included in the water-circulating devices 10 and 100 are not limited to those illustrated, and can be appropriately changed.
Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  2 System kitchen, 3 Counter, 4 Sink, 5 Cabinet, 10, 100 Equipment around water, 12 Reformed water generator, 14 Water faucet body, 16 Backflow prevention device, 18 Water receiving part, 20 Water level detection part, 30 Water discharge part , 30a Water outlet, 31 First flow rate adjustment unit, 32 Second flow rate adjustment unit, 33 Drainage port, 40 Main body unit, 41 First flow channel unit, 42 Second flow channel unit, 43 Intermediate chamber, 44 Discharge port, 45 Connection path, 51 First check valve, 52 Second check valve, 53 Relief valve, 54 Drive part, 55 Diaphragm, 56 Connection member, 61 Water supply pipe, 62 Hot water supply pipe, 63, 64 Branch pipe, 70 Control part, 71 1st flow path valve, 72 2nd flow path valve (flow path valve), 73 operation part, 74 flow sensor, 75 alerting part, 80 electrolytic cell, 82 solenoid valve, 84 additive supply Section, 110 flow path switching valve, 112 water discharge port, 114 water discharge port

Claims (5)

A reforming water generator that reforms the properties of the water supplied from the upstream to generate reformed water;
A water discharger that is provided downstream of the reformed water generator and discharges the reformed water;
A backflow prevention device provided upstream of the reformed water generator;
With
The backflow prevention device is
A first flow path section;
A second flow path portion provided downstream of the first flow path portion;
An intermediate chamber provided between the first flow path portion and the second flow path portion;
A first check valve provided between the first flow path portion and the intermediate chamber, and partitioning the first flow path portion and the intermediate chamber;
A second check valve provided between the second flow path portion and the intermediate chamber, and divides the second flow path portion and the intermediate chamber;
An outlet for discharging water in the intermediate chamber;
A relief valve for opening and closing the outlet;
A drive unit that operates the relief valve to open the discharge port when a differential pressure is generated between the first flow path unit and the intermediate chamber;
A watering device characterized by comprising: The discharge port communicates with the outside,
The water-surrounding device according to claim 1, further comprising a water receiving portion that receives water discharged from the discharge port.   The water-surrounding device according to claim 2, further comprising a water level detection unit that detects a water level in the water receiving unit.   The flow path valve provided in the downstream of the said backflow prevention apparatus and opening and closing the flow path between the said backflow prevention apparatus and the said water discharging part was further provided, The any one of Claims 1-3 characterized by the above-mentioned. Equipment around water described in one.   The water-circulating device according to any one of claims 1 to 4, wherein the backflow prevention device is provided in a concealed portion.

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