JP2011074625A - Sanitary washing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sanitary washing device capable of automatically performing drainage while suppressing the upsizing of the device and the need for a high cost. <P>SOLUTION: Characteristically, this sanitary washing device includes: a water discharge nozzle which emits a jet of water from a spout; a channel which leads water, supplied from a water supply source, to the water discharge nozzle; a latching-type electromagnetic valve which controls the passage of the water through the channel; a hot water storage tank which is provided midway through the channel so as to heat the water by a heater; a vacuum breaker which is provided in the channel on a downstream side with respect to the hot water storage tank; an auxiliary power source capable of supplying the electric power even after the stop of the supply of the electric power from the external electric source; and a control portion which performs control for opening the electromgnetic valve by the electric power supplied from the auxiliary power source, after the stop of the supply of the electric power from the external power source. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  Aspects of the present invention generally relate to a sanitary washing apparatus, and more specifically, to a sanitary washing apparatus that cleans, for example, a “butt” of a user sitting on a Western-style sitting toilet with water.

  The sanitary washing device accommodates a water discharge nozzle for jetting washing water so that it can be moved forward and backward, and can be installed on a sitting toilet to wash a user's “buttock” with warm water. Since such a sanitary washing apparatus has a water channel system inside, it is necessary to drain water from the water supply section of the sanitary washing apparatus in order to prevent freezing in, for example, maintenance and cold districts.

  Accordingly, a sanitary washing apparatus is disclosed that can automatically discharge the water in the hot water storage tank to the upstream side when the water supply pressure to the sanitary washing apparatus decreases and the second flow path opening / closing valve transitions from the closed state to the open state. (Patent Document 1). However, in the sanitary washing device described in Patent Document 1, the first flow path opening / closing valve that controls the supply of water to the water discharge nozzle and the second flow path opening / closing valve that automatically opens when the water supply pressure decreases. Must be provided in the first flow path and the second flow path, respectively. For this reason, there is room for improvement in that the apparatus is increased in size and cost.

JP 2008-63728 A

  The present invention has been made on the basis of recognition of such a problem, and provides a sanitary washing device capable of automatically performing drainage while suppressing an increase in size or cost of the device. The purpose is to do.

  According to a first aspect of the present invention, there is provided a water discharge nozzle that injects water from a water discharge port, a flow path that guides water supplied from a water supply source to the water discharge nozzle, a latching electromagnetic valve that controls water flow through the flow path, A hot water storage tank provided in the middle of the flow path for heating the water with a heater, a vacuum breaker provided in the flow path on the downstream side of the hot water storage tank, and after the supply of power from an external power source has stopped However, an auxiliary power source capable of supplying power, and a control unit that executes control to open the solenoid valve by the power supplied from the auxiliary power source after the supply of power from the external power source is stopped are provided. This is a sanitary washing device.

  According to this sanitary washing device, a latching type electromagnetic valve and an auxiliary power source capable of supplying electric power even after the supply of electric power from the external power source is stopped are provided. Then, after the supply of power from the external power supply is stopped, the control unit can execute control to open the latching type electromagnetic valve with the power supplied from the auxiliary power supply. According to this, when the supply of power from the external power supply is stopped, the sanitary washing device automatically opens the latching type electromagnetic valve and drains the water in the hot water storage tank to the upstream side of the flow path. Can do. That is, the sanitary washing device can drain the water in the hot water storage tank to the water supply source side. Therefore, when the water pressure of the water supplied from the water supply source decreases, the sanitary washing device can more reliably drain water to the water supply source side.

  More specifically, when sanitary washing devices are installed in applications other than homes, such as campers, trains, and airplanes, when these are parked and parked in a low-temperature environment, the water supply source is stopped and the power supply is turned off. There are many cases where the supply of ceased. That is, when a total switch of a camper, a train, an aircraft, etc. is turned off and the supply of power is stopped, the sanitary washing device is turned off and the supply of water from the water supply source is often stopped. The sanitary washing device of the present invention is one of devices that are effective when supplying water from a water supply source other than water supply (for example, a water storage tank) using a pump or the like. The sanitary washing device can be automatically drained in response to a stop or a drop in the water pressure of the water supply source.

  Therefore, the user does not need to perform a special operation for performing drainage, and can perform drainage only by stopping the supply of electric power from the external power source to the sanitary washing device. Thereby, the effort of draining work is reduced, and a user-friendly sanitary washing apparatus can be provided. And since there is no need to provide a special solenoid valve, bypass channel, drainage channel, etc. for draining water, it is possible to drain water while suppressing an increase in the size or cost of the sanitary washing device. Can be executed automatically.

  According to a second aspect of the present invention, in the first aspect of the present invention, the control unit performs control to close the electromagnetic valve when power is supplied from the external power source.

  According to this sanitary washing device, the control unit switches the open electromagnetic valve to the closed state when power is supplied from the external power source. Therefore, the electromagnetic valve can be stopped when the supply of water to the sanitary washing device is started. Therefore, it can suppress that the water supplied from a water supply source drips from a water discharge nozzle. As a result, the user can use the sanitary washing apparatus with more peace of mind.

  According to a third aspect, in the first or second aspect, the flow path is provided between the vacuum breaker and the water discharge nozzle, and the flow of power is stopped when power supply from the external power supply is stopped. The sanitary washing device further includes a valve device capable of stopping water in the road.

  According to this sanitary washing device, when the supply of power from the external power supply is stopped, the valve device can stop the water in the flow path even when water is supplied from the water supply source. . Therefore, it can suppress that the water supplied from a water supply source drips from a water discharge nozzle. As a result, the user can use the sanitary washing apparatus with more peace of mind. Moreover, since the valve device is provided in the flow path between the vacuum breaker and the water discharge nozzle, it is possible to drain water from the hot water storage tank to the water supply source side without any trouble.

  ADVANTAGE OF THE INVENTION According to the aspect of this invention, the sanitary washing apparatus which can perform draining automatically is provided, suppressing that an apparatus enlarges or cost starts.

It is a perspective schematic diagram which illustrates the toilet apparatus provided with the sanitary washing apparatus concerning embodiment of this invention. It is a block diagram showing the principal part structure of the water channel system of the sanitary washing apparatus concerning this embodiment. It is a cross-sectional schematic diagram which illustrates the internal structure of the solenoid valve of this embodiment. It is a cross-sectional schematic diagram which illustrates the internal structure of the solenoid valve of this embodiment. It is a cross-sectional schematic diagram which illustrates the internal structure of the solenoid valve of this embodiment. It is a block diagram which illustrates the principal part structure of the sanitary washing apparatus concerning the specific example of this embodiment. It is a flowchart figure which illustrates operation | movement when the power supply of a sanitary washing apparatus is cut off. It is a flowchart figure which illustrates operation | movement when the power supply of a sanitary washing apparatus is turned on.

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 schematic perspective view illustrating a toilet apparatus including a sanitary washing device according to an embodiment of the invention.

  The toilet device shown in FIG. 1 includes a Western-style seat toilet (hereinafter also simply referred to as “toilet”) 950 and a sanitary washing device 10 installed thereon. The Western-style seat toilet 950 may be a so-called “low tank type”, or may be a “direct pressure type” that is directly connected to a water supply source such as a water supply and allows flush water to flow. The sanitary washing device 10 installed on the toilet 950 includes a main body 12, and a toilet seat 14 and a toilet lid 16 that are pivotally supported by the main body 12 so as to be openable and closable. However, the toilet lid 16 may not be provided. From the main body 12, the water discharge nozzle 410 extends into the bowl of the toilet 950 in response to the user's switch operation, etc., and water is sprayed from the water discharge port provided near the tip of the toilet 950, so that the user's “wet” It can be washed. In the present specification, “water” includes not only cold water but also heated hot water.

FIG. 2 is a block diagram illustrating a main configuration of a water channel system of the sanitary washing device according to the present embodiment.
The sanitary washing device 10 includes a flow path 110 that guides water supplied from a water supply source 20 such as a water storage tank to the nozzle unit 400. A stop cock 112 is first provided on the upstream side of the flow path 110. The stop cock 112 can be manually opened and closed, and can shut off the water channel at any time, for example, when attaching and removing the sanitary washing device 10 or during maintenance and inspection. The stop cock 112 may be provided in the sanitary washing device 10 or may be provided on the supply port side of the water supply source 20 such as a water storage tank as a separate element from the sanitary washing device 10.

  A strainer 114, a solenoid valve 120, and a pressure regulating valve 130 are provided downstream of the stop cock 112. The strainer 114 is a filter of about 80 mesh, for example, and removes foreign matters mixed in the water supply. The electromagnetic valve 120 is a latching type electromagnetic valve, and controls water flow through the flow path 110 based on a command from the control unit (see FIG. 6). Here, in this specification, the term “latching solenoid valve” means that at least one of the case where the valve is changed from the open state to the closed state and the case where the valve is changed from the closed state to the open state requires electric power. This means that no electric power is required to maintain the valve in the open state and the closed state, respectively. The electromagnetic valve 120 will be described in detail later. The pressure regulating valve 130 has a role of adjusting to a predetermined pressure range when the feed water pressure is high.

  A safety valve 140 is provided downstream of the pressure regulating valve 130. The safety valve 140 opens when the water channel pressure rises and drains water into the bowl of the toilet 950. By providing the safety valve 140, it is possible to prevent water leakage from occurring inside the sanitary washing device 10 even when the pressure in the secondary water channel increases due to, for example, a failure of the pressure regulating valve 130.

  A heat exchange unit 200 is provided downstream of the safety valve 140. The heat exchange unit 200 includes a hot water storage tank 201 provided in the middle of the flow path 110. The hot water storage tank 201 heats the supplied water with a heater to obtain predetermined hot water. A nozzle unit 400 is connected to the downstream of the heat exchange unit 200 from the vacuum breakers 210 and 230 via a flow rate adjusting valve unit (valve device) 300. The vacuum breakers 210 and 230 promote drainage of the flow path 110 between the heat exchange unit 200 and the nozzle unit 400. The flow rate adjustment valve unit 300 performs switching of water supply to the water discharge nozzle and nozzle cleaning chamber (see FIG. 6) provided in the nozzle unit 400 and adjustment of the water flow. A pulsation unit that pulsates water may be provided on the secondary side of the flow rate adjustment valve unit 300.

  In the present embodiment, the control unit controls the opening of the latching electromagnetic valve 120 by the power supplied from the auxiliary power source (see FIG. 6) after the supply of power from the external power source (see FIG. 6) is stopped. Can be executed. According to this, the sanitary washing device 10 according to the present embodiment automatically opens the latching type electromagnetic valve 120 and flows the water in the hot water storage tank 201 when the supply of power from the external power supply is stopped. The water can be drained upstream of the channel 110. That is, the sanitary washing device 10 can drain the water in the hot water storage tank 201 to the water supply source 20 side as indicated by an arrow A1 shown in FIG. Therefore, when the water pressure of the water supplied from the water supply source 20 is reduced, the sanitary washing device 10 can more reliably drain water to the water supply source 20 side. Here, as the latching electromagnetic valve 120, for example, a latching solenoid valve can be used.

  More specifically, when sanitary washing devices are installed in applications other than homes, such as campers, trains, and airplanes, when these are parked and parked in a low-temperature environment, the water supply source is stopped and the power supply is turned off. There are many cases where the supply of ceased. That is, when a total switch of a camper, a train, an aircraft, etc. is turned off and the supply of power is stopped, the sanitary washing device is turned off and the supply of water from the water supply source is often stopped. The sanitary washing device 10 according to this embodiment is one of devices that are effective when supplying water from a water supply source 20 other than water supply (for example, a water storage tank) using a pump or the like. The drainage of the sanitary washing device 10 can be automatically executed in response to the stop of the power supply or the decrease in the water pressure of the water supply source.

  Therefore, the user does not have to bother to operate the stop cock 112 of the sanitary washing device 10 or the drain valve (not shown), and can simply drain the water supply by simply stopping the supply of power from the external power source to the sanitary washing device 10. Can be executed. Thereby, the effort of draining work is reduced, and a user-friendly sanitary washing apparatus can be provided. And since it is not necessary to provide a special solenoid valve, a bypass flow path, a drain flow path or the like for performing drainage, the sanitary washing device 10 is prevented from being enlarged or costly, Unplugging can be performed automatically.

  Although about 700 milliliters of water may remain in the hot water storage tank 201, even in this case, the sanitary washing device 10 according to the present embodiment automatically performs drainage more reliably. be able to. In addition, this invention is not limited to what used the hot water storage tank, The thing which has what is called an instantaneous heating type heat exchanger is also included.

Next, an example of the latching electromagnetic valve 120 of the present embodiment will be described with reference to the drawings.
3 to 5 are schematic cross-sectional views illustrating the internal structure of the electromagnetic valve according to this embodiment.
FIG. 3 is a schematic cross-sectional view showing a state where the electromagnetic valve is closed.
FIG. 4 is a schematic sectional view showing an initial state in which the electromagnetic valve is opened.
FIG. 5 is a schematic cross-sectional view showing the final state where the electromagnetic valve is opened.

  3 to 5 show a latching solenoid valve as an example of the latching electromagnetic valve 120. The electromagnetic valve 120 has a valve main body 121, and a latching permanent magnet 122 and a solenoid 123 are provided in an upper portion of the valve main body 121. Further, inside the valve body 121, there are a plunger 124 having a pilot valve body 124a at the bottom, a pilot valve seat 125 having a pilot valve hole 125a formed therein, a diaphragm 126 having an orifice 126a at the peripheral edge, and a plunger 124. And a spring 127 that biases downward.

  Inside the valve main body 121, an inflow path 121a through which water supplied from the water supply source 20 flows in and an outflow path 121c through which water flows out from the electromagnetic valve 120 are formed. Furthermore, a main valve seat 121b that supports the lowered diaphragm 126 is formed between the inflow path 121a and the outflow path 121c. That is, the diaphragm 126 can be raised and lowered so as to be able to contact and separate from the main valve seat 121b.

  In the electromagnetic valve 120 having such a structure, when water is supplied from the water supply source 20, the water flows into the valve body 121 from the inflow path 121a as indicated by an arrow A2 shown in FIG. Then, the water flowing in from the inflow path 121a is passed through the orifice 126a to the diaphragm back chamber 128 as indicated by an arrow A3 shown in FIG. Here, the diaphragm back chamber 128 is a space formed by the diaphragm 126 and the valve body 121.

  On the other hand, when the electromagnetic valve 120 is closed, that is, when the water is stopped, as shown in FIG. 3, the plunger 124 receives an elastic force from the spring 127 and is biased toward the pilot valve seat 125. Therefore, the pilot valve hole 125a is closed by the pilot valve body 124a. Therefore, the water passed through the diaphragm back chamber 128 is stored in the diaphragm back chamber 128 without passing through the pilot valve hole 125a. At this time, the water in the diaphragm back chamber 128 gives a downward force (water pressure) to the pilot valve seat 125 and the diaphragm 126 as indicated by an arrow A4 shown in FIG.

  Thereby, a pressure difference arises between the water pressure in the diaphragm back chamber 128 and the water pressure in the inflow path 121a and the outflow path 121c. That is, the water pressure in the diaphragm back chamber 128 is higher than the water pressure in the inflow passage 121a and the outflow passage 121c. Therefore, the diaphragm 126 and the main valve seat 121b come into contact with each other, and the main valve hole 121d (see FIG. 5) formed between the diaphragm 126 and the upper end of the main valve seat 121b is closed. Thereby, the water supplied from the water supply source 20 is stopped by the electromagnetic valve 120. This state (the state in which the electromagnetic valve 120 is closed) is maintained by the plunger 124 being held by the magnetic force of the permanent magnet 122.

  Subsequently, when the solenoid 123 is energized, a magnetic field is generated. Then, by this magnetic field, the plunger 124 rises against the urging force of the spring 127 as shown in FIG. Thereby, the pilot valve body 124a and the pilot valve seat 125 are separated from each other, and the pilot valve hole 125a is opened. Therefore, the diaphragm back chamber 128 and the outflow passage 121c communicate with each other through the pilot valve hole 125a, and water in the diaphragm back chamber 128 passes through the pilot valve hole 125a as indicated by arrows A5 and A6 shown in FIG. The water is then passed to the outflow channel 121c.

  As a result, the pressure difference generated between the water pressure in the diaphragm back chamber 128 and the water pressure in the inflow passage 121a and the outflow passage 121c changes. That is, the water pressure in the diaphragm back chamber 128 decreases and becomes smaller than the water pressure in the inflow passage 121a and the outflow passage 121c. Then, the diaphragm 126 rises as shown in FIG. 5, and the inflow path 121a and the outflow path 121c communicate with each other through the main valve hole 121d. As a result, the water supplied from the water supply source 20 flows into the electromagnetic valve 120 through the inflow path 121a as indicated by an arrow A2 shown in FIG. 5, and as shown by an arrow A7 shown in FIG. Water flows into the outflow passage 121c through the valve hole 121d. Then, the water passed through the main valve hole 121d to the outflow passage 121c flows out of the electromagnetic valve 120 through the outflow passage 121c as indicated by an arrow A8 shown in FIG. This state (the state in which the electromagnetic valve 120 is opened) is maintained by the plunger 124 being held by the magnetic force of the permanent magnet 122.

  Subsequently, when the solenoid 123 is energized in a direction to release the holding of the plunger 124 by the magnetic force of the permanent magnet 122, the magnetic force of the permanent magnet 122 is canceled by the magnetic force generated in the solenoid 123. Then, the plunger 124 is lowered by the urging force of the spring 127 and comes into contact with the pilot valve seat 125. As a result, the pilot valve hole 125a is closed by the pilot valve body 124a. Along with this, the diaphragm 126 descends and contacts the main valve seat 121b. As a result, the main valve hole 121d is closed by the diaphragm 126. And the water supplied from the water supply source 20 is stopped by the electromagnetic valve 120. This state (the state in which the electromagnetic valve 120 is closed) is maintained by the plunger 124 being held by the magnetic force of the permanent magnet 122.

  Thus, in the latching type electromagnetic valve 120, it is possible to switch between the open state and the closed state simply by controlling the operation of the plunger 124 by controlling the energization to the solenoid 123. The energization of the solenoid 123 may be performed only when the solenoid valve 120 is opened or closed. Therefore, in the latching electromagnetic valve 120, switching between the open state and the closed state can be performed with less power consumption. More specifically, for example, the open state and the closed state of the solenoid valve 120 can be switched by electric power supplied from an auxiliary power source such as a capacitor or a battery built in the main body 12 of the sanitary washing device 10.

Next, a specific example of the sanitary washing device according to the present embodiment will be described with reference to the drawings.
FIG. 6 is a block diagram illustrating the main configuration of a sanitary washing device according to a specific example of this embodiment.
In addition, FIG. 6 represents together the principal part structure of the waterway system and the electrical system.

  In the sanitary washing device 10 according to this example, the latching solenoid valve 120, the pressure regulating valve 130, the heat exchange unit 200, the flow rate adjusting valve unit 300, and the nozzle unit 400 described above with reference to FIG. Is provided. The nozzle unit 400 is provided with a water discharge nozzle 410, a nozzle motor 480 that extends and retracts the water discharge nozzle 410, and a nozzle cleaning chamber 490 that injects water onto the outer periphery of the water discharge nozzle 410 to clean the body. . The operations of these elements are controlled by the control unit 500. In addition, a signal from a seating sensor 600 that detects that a user is sitting on the toilet seat 14, information on a switch operation by the operation unit (remote controller) 700, and the like are input to the control unit 500.

  Furthermore, the sanitary washing device 10 is provided with an auxiliary power source 35 such as a capacitor and a battery, and a determination circuit 572. The determination circuit 572 is provided in the power supply circuit 570, for example. The determination circuit 572 preferentially uses the power supplied from the external power supply 30 for the operation of the sanitary washing device 10 when power is supplied from the external power supply 30. On the other hand, when the determination circuit 572 detects that the supply of power from the external power supply 30 has been stopped, the determination circuit 572 switches to the supply of power from the auxiliary power supply 35 and converts the power supplied from the auxiliary power supply 35 to the sanitary washing device. Used for 10 operations.

Next, a specific example of the operation of the sanitary washing device 10 according to this specific example will be described with reference to the drawings.
FIG. 7 is a flowchart illustrating the operation when the power of the sanitary washing device is turned off.

  First, for example, when the total switch of a camper, a train, an aircraft, or the like is turned off and the supply of power from the external power source 30 is stopped, the sanitary washing device 10 is turned off (step S101). Then, the supply of water from the water supply source 20 is stopped (step S103). Here, the determination circuit 572 detects that power supply from the external power supply 30 has stopped, and switches to power supply from the auxiliary power supply 35.

  Then, the control unit 500 performs control to open the latching electromagnetic valve 120 with the electric power supplied from the auxiliary power source 35 (step S105). Here, since the solenoid valve 120 is a latching type, as described above with reference to FIGS. 3 to 5, the control unit 500 opens the solenoid valve 120 with power supplied from the auxiliary power source 35 such as a capacitor or a battery. be able to. And the state which the solenoid valve 120 opened is maintained by the plunger 124 being hold | maintained with the magnetic force of the permanent magnet 122 (step S107). Thereby, the water of the hot water storage tank 201 can be drained to the upstream side of the flow path 110 (step S109). That is, the water in the hot water storage tank 201 can be drained to the water supply source 20 side (step S109).

  According to the operation of this specific example, drainage of the sanitary washing device 10 can be automatically executed in response to the stop of the supply of electric power from the external power source 30 or a decrease in the water pressure of the water supply source 20. Therefore, the user does not have to bother to operate the stop cock 112 of the sanitary washing device 10 or the drain valve (not shown), and only to stop the power supply from the external power source 30 to the sanitary washing device 10. Can be executed. Thereby, the effort of draining work is reduced, and a user-friendly sanitary washing apparatus can be provided. And since it is not necessary to provide a special solenoid valve, a bypass flow path, a drain flow path or the like for performing drainage, the sanitary washing device 10 is prevented from being enlarged or costly, Unplugging can be performed automatically.

  FIG. 8 is a flowchart illustrating the operation when the sanitary washing apparatus is turned on. First, for example, when a total switch such as a camper, a train, and an aircraft is turned on and the supply of power from the external power source 30 is started, the sanitary washing device 10 is turned on (step S201). Note that the range of “turning on the power of the sanitary washing device 10” here includes not only the case where the power is turned on for the first time after the sanitary washing device 10 is installed, but also the case where the power is turned on again. That is, for example, when the total switch of a camper, a train, an aircraft, or the like is turned on again, the sanitary washing device 10 is turned on again and the operation of the sanitary washing device 10 is resumed.

  Then, the determination circuit 572 detects that the supply of power from the external power supply 30 has been started, and preferentially uses the power supplied from the external power supply 30. And the control part 500 performs control which closes the latching type solenoid valve 120 with the electric power supplied from the external power supply 30 (step S203). Subsequently, the supply of water from the water supply source 20 is started (step S205), and the preparation for the operation of the sanitary washing device 10 is completed (step S207).

  According to the operation of this specific example, when the supply of power from the external power supply 30 is started, the control unit 500 switches the opened electromagnetic valve 120 to the closed state. Therefore, the solenoid valve 120 can stop water when the supply of water to the sanitary washing device 10 is started. Therefore, it is possible to suppress the water supplied from the water supply source 20 from flowing down from the water discharge nozzle 410. Thereby, the user can use the sanitary washing apparatus 10 more safely.

  In the sanitary washing device 10 according to this example, the flow rate adjusting valve is disposed between the vacuum breakers 210 and 230 and the nozzle unit 400, more specifically, between the vacuum breakers 210 and 230 and the water discharge nozzle 410. A unit (valve device) 300 is provided (see FIG. 2). The flow rate adjustment valve unit 300 is closed when the supply of power from the external power supply 30 is stopped, and can stop water in the flow path 110. Since the flow rate adjustment valve unit 300 only switches water supply and adjusts the water flow, it does not require more power consumption and can operate with less power consumption. Therefore, the control unit 500 can switch between the open state and the closed state of the flow rate adjustment valve unit 300 by the power supplied from the auxiliary power source 35 such as a capacitor or a battery.

  According to this, when the supply of power from the external power supply 30 is stopped, the flow rate adjusting valve unit 300 stops the water in the flow path 110 even when water is supplied from the water supply source 20. be able to. Therefore, even in this case, the water supplied from the water supply source 20 can be prevented from dripping from the water discharge nozzle 410. Thereby, the user can use the sanitary washing apparatus 10 more safely. Moreover, since the flow regulating valve unit 300 is provided between the vacuum breakers 210 and 230 and the water discharge nozzle 410, it is possible to drain water from the hot water storage tank 201 to the water supply source 20 without any trouble.

  As described above, according to the present embodiment, the sanitary washing device 10 includes the latching electromagnetic valve 120. In addition, the sanitary washing device 10 includes a determination circuit 572 that determines whether or not power is supplied from the external power supply 30 and switches between power supply from the external power supply 30 and power supply from the auxiliary power supply 35. Then, after the supply of power from the external power supply 30 is stopped, the control unit 500 can execute control to open the latching electromagnetic valve 120 with the power supplied from the auxiliary power supply 35.

  According to this, when the supply of electric power from the external power source 30 is stopped, the sanitary washing device 10 according to the present embodiment automatically opens the latching type electromagnetic valve 120 and draws water from the hot water storage tank 201. Water can be drained upstream of the flow path 110. That is, the sanitary washing device 10 can drain the water in the hot water storage tank 201 to the water supply source 20 side. Therefore, when the water pressure of the water supplied from the water supply source 20 is reduced, the sanitary washing device 10 can more reliably drain water to the water supply source 20 side.

  Therefore, the user does not have to bother to operate the stop cock 112 of the sanitary washing device 10 or the drain valve (not shown), and only to stop the power supply from the external power source 30 to the sanitary washing device 10. Can be executed. Thereby, the effort of draining work is reduced, and a user-friendly sanitary washing apparatus can be provided. And since it is not necessary to provide a special solenoid valve, a bypass flow path, a drain flow path or the like for performing drainage, the sanitary washing device 10 is prevented from being enlarged or costly, Unplugging can be performed automatically.

  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 included in the above-described embodiments, those skilled in the art appropriately modified the design are also included in the scope of the present invention. For example, the shape, dimensions, material, arrangement, etc. of each element included in the latching electromagnetic valve 120 and the like, the installation form of the electromagnetic valve 120 and the pressure regulating valve 130 are not limited to those illustrated, and may be changed as appropriate. Can do. That is, in the block diagrams shown in FIGS. 2 and 6, the electromagnetic valve 120 is provided on the upstream side of the pressure regulating valve 130, but may be provided on the downstream side of the pressure regulating valve 130. 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.

  DESCRIPTION OF SYMBOLS 10 Sanitary washing device, 12 Body part, 14 Toilet seat, 16 Toilet lid, 20 Water supply source, 30 External power supply, 35 Auxiliary power supply, 110 Flow path, 112 Stop cock, 114 Strainer, 120 Solenoid valve, 121 Valve body, 121a Inflow Road, 121b Main valve seat, 121c Outflow passage, 121d Main valve hole, 122 Permanent magnet, 123 Solenoid, 124 Plunger, 124a Pilot valve body, 125 Pilot valve seat, 125a Pilot valve hole, 126 Diaphragm, 126a Orifice, 127 Spring, 128 diaphragm back chamber, 130 pressure regulating valve, 140 safety valve, 200 heat exchange unit, 201 hot water storage tank, 210, 230 vacuum breaker, 300 flow rate adjusting valve unit, 400 nozzle unit, 410 water discharge nozzle, 80 nozzle motor 490 nozzle cleaning chamber, 500 control unit, 570 power supply circuit, 572 determination circuit, 600 seat sensor, 700 operation unit, 950 Western toilet bowl

Claims (3)

A water discharge nozzle for injecting water from the water outlet;
A flow path for guiding water supplied from a water supply source to the water discharge nozzle;
A latching solenoid valve for controlling the flow of water through the flow path;
A hot water storage tank that is provided in the middle of the flow path and heats the water with a heater;
A vacuum breaker provided in the flow path downstream of the hot water storage tank;
An auxiliary power supply that can supply power even after the supply of power from the external power supply has stopped,
A control unit that executes control to open the solenoid valve with power supplied from the auxiliary power supply after the supply of power from the external power supply is stopped;
A sanitary washing device characterized by comprising:   The sanitary washing device according to claim 1, wherein the control unit performs control to close the electromagnetic valve when electric power is supplied from the external power source.   A valve device provided in the flow path between the vacuum breaker and the water discharge nozzle and capable of stopping the water in the flow path when the supply of power from the external power supply is stopped; The sanitary washing device according to claim 1 or 2, characterized by the above.

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