JP2014190000A - Sanitary washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sanitary washing device which can immediately start discharging water when a user starts water discharge, and whose feeling of flushing is not damaged with no air entering the discharged water.SOLUTION: In the sanitary washing device, water is accumulated within a tank body when seating detection mechanism detects a user seated on the device and water is not charged from a water discharge nozzle, and the water within the tank body is being discharged when the seating detection mechanism does not detect the user seated on the device.

Description

  The present invention relates to a sanitary washing apparatus including a washing nozzle for washing a washing portion of a human body with discharged washing water.

In a sanitary washing device installed at the top of a Western-style toilet body and equipped with a washing nozzle for washing the human body with discharged washing water, an open tank and an open tank with an air gap in the middle of the water channel to the washing nozzle There is known one provided with a cleaning pump that is provided downstream and pumps up water in an open tank to clean a human body. (Patent Document 1)
In the sanitary washing device of Patent Document 1, a configuration is disclosed that includes a control device that performs drainage control for discharging water from an open tank with a pump in a state where supply of water is stopped.

In the sanitary washing device of Patent Document 1, water is leaked out of the open tank even if the sanitary washing device is tilted during cleaning or relocation by draining control to drain water from the open tank. do not do. However, if the pump is driven while the tank is empty at the start of cleaning, cleaning water mixed with air is discharged. For this reason, since the human body is washed with washing water mixed with air, there is a problem that the feeling of washing is significantly impaired.
In order to solve this problem, there is a problem that it takes time to start cleaning unless the cleaning pump is driven until a certain amount of water is accumulated in the open tank by water supply at the start of cleaning.

JP 2010-90621 A

  The present invention solves the above-mentioned problem, and when a user starts water discharge, water discharge can be started immediately, and air is not mixed into the water discharge, and the feeling of cleaning is impaired. The present invention provides a sanitary washing device that is not damaged.

  A first invention is a water discharge nozzle that discharges water toward a human body part, a water supply channel that supplies water to the water discharge nozzle, an open-type tank provided in the water supply channel, the tank body, The tank is provided so as to form an air gap between an inlet for allowing water to flow into the tank body, an outlet for allowing water inside the tank body to flow out to the water discharge nozzle, and the inlet. An open-type tank having an overflow port for discharging excess water inside the main body to the outside; and provided in the water supply channel downstream of the open-type tank, pumping water from the outlet and downstream of the water supply channel A sanitary washing apparatus comprising: a washing pump to be supplied; a casing for storing the open tank; and a toilet seat that is attached to the casing and includes a seating detection mechanism that detects whether or not a user is seated. In the state where the seating detection mechanism detects the seating of the user and the water is not discharged from the water discharge nozzle, water is accumulated in the tank body, and the seating detection mechanism Is a sanitary washing apparatus in which the water inside the tank body is discharged when the user's seating is not detected.

  According to this sanitary washing device, when the seating detection mechanism is detecting the seating of the user and no water is being discharged from the water discharge nozzle, water is accumulated in the tank body. Therefore, when a user starts water discharge, water discharge can be started immediately. Moreover, since air is not mixed into the water discharge, the feeling of cleaning is not impaired.

  According to a second aspect of the present invention, the open-type tank includes a water level detection mechanism that detects a minimum water level in the tank body, and the seating detection mechanism detects the seating of the user from the state where the seating is not detected. Sanitary washing characterized in that when the detection mechanism shifts to a state in which a user is seated, water is supplied to the inside of the tank body, and the water supply is stopped when the water level detection mechanism detects a minimum water level. Device.

  According to this sanitary washing device, the water in the tank is kept near the lowest water level when the seating detection mechanism detects the seating of the user. Therefore, when the seating detection mechanism shifts to a state where it does not detect the user's seating, the water in the tank can be discharged in a short time. Thereby, when the sanitary washing device is removed from the toilet bowl and tilted, it is possible to suppress the possibility that water in the tank is scattered inside the sanitary washing device.

  When the user starts water discharge, the sanitary washing apparatus can start water discharge immediately, and air is not mixed into the water discharge, and the cleaning feeling is not impaired. .

It is an external view of the toilet apparatus provided with the sanitary washing apparatus which concerns on embodiment of this invention. It is a perspective view showing the internal structure of the sanitary washing apparatus which concerns on embodiment of this invention. It is a control block diagram of the sanitary washing device concerning the embodiment of the present invention. It is a perspective view near the deodorizing unit and open tank of the sanitary washing device concerning the embodiment of the present invention. It is a block diagram showing the channel structure of the sanitary washing apparatus which concerns on embodiment of this invention. It is the schematic showing an example of the time chart of the sanitary washing apparatus which concerns on embodiment of this invention.

  FIG. 1 is an external view of a toilet apparatus 10 including a sanitary washing device according to an embodiment of the present invention. Although the toilet apparatus 10 of the present embodiment is a so-called “low tank type”, the present invention is also applied to a “water direct pressure type” having a valve mechanism for controlling the water flowing to the toilet (stool) 200. be able to.

  The sanitary washing device 100 of the present embodiment has a main body 110 provided above the rear part of the toilet bowl 200. A toilet lid 130 and a toilet seat (not shown) covered by the toilet lid 130 are pivotally supported on the casing 120 constituting the casing of the main body 110 so as to be rotatable.

  FIG. 2 is a perspective view showing the internal configuration of the sanitary washing device according to the embodiment of the present invention. The casing 120 has a case cover 121 and a case plate. The case plate is formed in a flat plate shape and placed on the toilet 200, and a water discharge nozzle 131 is disposed in front of the case plate. In addition, the deodorizing unit 140, the heat exchanger 150, the control device 160, the remote control receiver, the seating sensor, the water supply valve unit 170, the open tank 180, and the like necessary for performing sanitary washing are also provided on the case plate. The elements are arranged. A water supply unit that receives water from a water pipe is provided on the side of the case cover 121. In the present specification, the term “water” includes not only cold water but also heated hot water.

  The water discharge nozzle 131 can move forward and backward in the bowl portion of the toilet bowl 200 and has a function of discharging water to a user's “butt” seated on the toilet bowl 200 and washing it. In a state where the water discharge nozzle 131 has advanced into the bowl portion of the toilet bowl 200, water that has passed through the water supply valve unit 170 having a built-in electromagnetic valve that switches between water flow and water stop is discharged.

  The heat exchanger 150 heats water supplied from the water supply valve unit 170 in order to discharge hot water from the water discharge nozzle 131. As will be described later, a heater 151 that generates heat when energized is provided inside the heat exchanger 150.

  The control device 160 controls the advance / retreat of the water discharge nozzle 131, the discharge amount of water, the heating amount of the heat exchanger 150, and the like based on a signal from a remote controller (not shown) received by the remote control receiver 161.

  As will be described in detail later, the deodorizing unit 140 has a role of sucking air in the bowl portion of the toilet bowl 200, deodorizing it, and discharging it from the exhaust port 141. When the seating sensor 162 detects that the user is seated on the toilet seat, the deodorizing unit 140 drives the deodorizing fan 142 and starts sucking air in the bowl portion through the deodorizing duct 143.

  FIG. 3 is a control block diagram of the sanitary washing device according to the embodiment of the present invention.

  The remote controller R is a user interface for the user to operate the sanitary washing apparatus 100, and corresponds to each of a stop switch S1 for stopping the operation of the sanitary washing apparatus 100 and a plurality of washing modes of the sanitary washing apparatus 100. An operation mode switch is provided. Specifically, there are provided three operation mode switches of “wet” switch S2, “bidet” switch S3, and “soft” switch S4, and the user corresponds to the operation mode that the sanitary washing apparatus 100 wants to execute. Operate the operation mode switch.

  Based on the user's operation, the remote controller R transmits an operation signal to the control device 160. The control device 160 receives the operation signal, switches the solenoid valve 174 between closing / opening, switching the water supply destination by the switching valve 192, the deodorizing fan 142, the heater 151, the cleaning pump 191, and the nozzle driving device. The drive of 132 is controlled. The control device 160 is configured to receive a detection signal transmitted from the seating sensor 162, and appropriately determines the control content based on the received detection signal. Each of these elements controlled by the control device 160 will be described in detail later.

  An open tank 180 is disposed in a gap formed between the deodorizing duct 143 and the case plate 122. The open tank 180 has a function of providing a so-called air gap in the water channel so that the sewage does not flow back to the water pipe even when sewage enters the water channel from the water outlet of the water discharge nozzle 131. The open-type tank 180 can store water therein, and has an inlet 181 that allows water that has passed through the water supply valve unit 170 (see FIG. 2) to flow into the interior, and an outlet that discharges internal water to the outside. 186a. Furthermore, the open tank 180 is configured in a horizontally long shape, and an inflow port 181 is disposed on the left side of the deodorizing duct, and an outflow port 186a is disposed on the right side. A cleaning pump 191 is provided behind the open tank 180.

Hereinafter, the structure of the open tank 180 will be described in detail.
FIG. 4 is a schematic diagram showing the structure of the open tank 180 and the flow of water in the sanitary washing device according to the embodiment of the present invention. Among these, FIG. 4 (a) is a perspective view of the open tank 180, FIG. 4B shows a cross-sectional view of the open tank 180 taken along the line AA.

  As shown in FIG. 4, the open tank 180 is composed of a plurality of members that are assembled through packing. A float switch 187 which is a water level detection mechanism for detecting the water level of water stored in the tank 185 and the water inlet member 184 is attached to the tank lid 186. Since the water inlet member 184 supplies water in the horizontal direction, the inlet 181 is attached horizontally to the tank lid 186. The tank lid 186 is attached to the upper portion of the tank body 185 while being watertight through the packing. The tank lid 186 secures a spatial separation of 20 mm or more from the water flowing in from the water inlet member 184, and then receives the water in a receiving hole located coaxially with the water inlet member and guides it to the tank body 185 as shown by the arrow F1. Further, the tank lid 186 is provided with an outlet 186a for guiding water accumulated in the tank body 185 from the vicinity of the bottom surface to the pump.

  The float switch 187 stores two reed switches in the case, the float is attached to the outside of the case, and the water level is detected by turning the reed switch on and off by moving up and down depending on the water level. The water level detection height by the lower reed switch is H1, and the detection height by the upper reed switch is H2.

  The tank main body 185 includes a throttle portion 185a and a water storage portion 185b that allow the water to be stored in a short time to a water level that does not squeeze air when the pump 191 is driven when the pump 191 is driven.

Next, the flow of water supplied to the water discharge nozzle 131 will be described with reference to FIG.
FIG. 5 is a block diagram showing a water channel configuration of the sanitary washing device according to the embodiment of the present invention.

  The stop cock 501 connected to the water pipe 500 and the water supply valve unit 170 are connected by a flexible hose 502 having flexibility. The water supply valve unit 170 includes a check valve 171 that prevents the backflow of water upstream, a strainer 172 that captures foreign matter in water, a constant flow valve 173 that maintains a constant flow rate of water regardless of the supply water pressure, and a valve that opens when energized. And a solenoid valve 174 or the like for selectively switching the water flow / water stoppage downstream.

  The water that has passed through the electromagnetic valve 174 flows into the open tank 180. A cleaning pump 191 is connected downstream of the open tank 180. The cleaning pump 191 pumps the water in the open tank 180 and supplies it downstream, and can also adjust the flow rate (water flow).

  A heat exchanger 150 is provided downstream of the cleaning pump 191. The heat exchanger 150 includes a heater 151 that is a heating source such as a sheathed heater, for example, and stores and heats water supplied from an upstream cleaning pump 191. When water is supplied from the cleaning pump 191, the heated water is pushed out from the hot water outlet 152 provided at the top of the heat exchanger 150 and flows out. In addition, a float switch 156 that detects the water level of the stored water is provided inside the heat exchanger 150, and when the detected water level is equal to or lower than a predetermined water level, the heater 151 is stopped from driving so-called emptying. It has a prevention function.

  A switching valve 192 and a water discharge nozzle 131 are provided downstream of the heat exchanger 150. The water flowing out from the hot water outlet 152 of the heat exchanger 150 is switched to one of a plurality of water outlets of the water outlet nozzle 131 by the switching valve 192. For example, when the user operates the “wet” switch S3 (see FIG. 3) of the remote control R, the control device 160 causes water to flow to the water discharge port of the water discharge nozzle 131 corresponding to the “wet” cleaning position. The switching valve 192 is switched so as to be supplied. The water flow and temperature discharged from the water discharge nozzle 131 can be changed by the user according to his / her preference. The user adjusts the driving state of the cleaning pump 191 and the heating amount of the heater 151 by the remote controller R. To do. Further, the water discharge nozzle 131 can be moved forward and backward between a position housed in the casing 120 and a position advanced into the bowl portion of the toilet bowl 200 by driving a nozzle driving device 132 constituted by an electric motor or the like. ing.

  With the above configuration, the water stored in the open tank 180 is pumped out by the cleaning pump 191 and the flow rate pumped out and discharged from the water discharge nozzle 131 is also preferred by the user. It is possible to adjust accordingly.

  FIG. 6 is a schematic diagram illustrating an example of a time chart of the sanitary washing device according to the embodiment of the present invention.

  When the seating sensor 162 detects the seating of the user on the toilet seat at t1 from the standby state of the sanitary washing device 100, the control device 160 opens the electromagnetic valve 174 and starts water supply to the open tank 180. When the water level in the tank becomes H1 or higher, water supply is stopped and water is stored in the open tank 180 to prepare for water discharge from the water discharge nozzle 131.

  In other words, when the seating sensor 162 shifts from the state where the seating sensor 162 is not detecting the user's seating to the state where the seating sensor 162 is detecting the seating of the user, the water is supplied to the inside of the tank body 185, and the float switch Water supply is stopped when H1 where 187 is the lowest water level is detected.

  Therefore, in the state where the seating sensor 162 detects the seating of the user, the water in the tank body 185 is kept near the minimum water level H1. Therefore, when the seating sensor 162 shifts to a state where it does not detect the user's seating, the water in the tank body 185 can be discharged in a short time. Thereby, when the sanitary washing device 100 is detached from the toilet 200 and tilted, it is possible to suppress the possibility that water in the tank body 185 is scattered inside the sanitary washing device 100.

At the time of cleaning, the pump is driven only when the water level of the open tank 180 is higher than H1, and the water supply is stopped when the water level of the open tank 180 becomes H2, and the water supply is resupplied after a predetermined time (TY). To do. Here, the predetermined time (TY) is set so that the decrease of the water level in the open tank by the pump drive does not become H1 or less.
Next, when the water supply to the open tank 180 is completed at t2, the operation waits for the user to select an operation mode with the remote controller R (see FIG. 3). When the user operates the “bidet” switch S3 (see FIG. 3) at t3, the control device 160 switches to supply the water flowing out from the heat exchanger 150 to the water discharge port corresponding to the “bidet” of the water discharge nozzle 131. The valve 192 is switched. In addition, the nozzle driving device 132 is driven at t4, and the water discharge nozzle 131 is advanced from the casing 120 to a position corresponding to “bidet”.
Subsequently, the control device 160 opens the electromagnetic valve 174 again at t5, and increases the flow rate (water force) of water supplied by driving the cleaning pump 191 in five steps until t6. Thereby, the water which increases gradually from the water discharge port of the water discharge nozzle 131 is discharged.

  When the user operates the stop switch S1 of the remote controller R at t7, the control device 160 closes the electromagnetic valve 174 to end the discharge of water from the water discharge nozzle 131 and drives the nozzle driving means 132 to discharge the water discharge nozzle. 131 is accommodated in the casing 120. When the storage of the water discharge nozzle 131 is completed at t8, the switching valve 192 is then returned to the “soft” position, and a standby state is entered from t9.

When the user finishes cleaning and leaves the toilet seat at t10, the seating sensor 162 enters a non-detection state. When the non-detected state of the seating sensor 162 continues for a predetermined time T0 (for example, 30 seconds) or longer (t11), the control device 160 determines that the user has finished using the sanitary washing device 100. Then, draining water in the open tank 180 is started.
That is, in the present embodiment, when the seating sensor 162 detects the seating of the user and no water is discharged from the water discharge nozzle 131, the water is accumulated in the tank body 185. When the sensor 162 does not detect the user's sitting, the water inside the tank body 185 is discharged.

  Therefore, in a state where the seating sensor 162 detects the seating of the user and no water is being discharged from the water discharge nozzle 131, water has accumulated in the tank body 185. Therefore, when a user starts water discharge, water discharge can be started immediately. Moreover, since air is not mixed into the water discharge, the feeling of cleaning is not impaired.

The seating sensor 162 is also in a non-detected state when the user sitting on the toilet seat temporarily leaves the toilet seat, for example, to take extra toilet paper. For this reason, if the controller 160 is set to start draining the water in the open tank 180 immediately after the seating sensor 162 is in the non-detection state, it is used in the case of the temporary non-detection state as described above. Even though the person is still using the sanitary washing device 100, water is drained from the open tank 180. Therefore, even if the user wants to clean again and operates the remote controller R, it takes time to store water again in the open tank 180 from which water has been drained. There arises a problem that the discharge start is delayed.
Therefore, here, when the non-detected state of the seating sensor 162 continues for a predetermined time T0 or more, it is determined that the user has finished using the sanitary washing device 100 and has completely left the toilet seat, and the open tank By starting draining the water in 180, the above-mentioned problem is solved.

  Here, the controller 160 drains the water from the open tank 180 by driving the cleaning pump 191. The water pumped out of the open tank 180 by driving the cleaning pump 191 reaches the water discharge nozzle 131 accommodated in the casing 120 via the heat exchanger 150, and is gently discharged from the water discharge port of the water discharge nozzle 131. It is discharged into the bowl of the toilet bowl 200.

  When draining of the open tank 180 is completed at t12, the control device 160 stops driving the cleaning pump 191 and the sanitary cleaning device 100 is again in a standby state.

  As described above, the sanitary washing device 100 can be in a state in which the water in the open-type tank 180 is drained without impairing the usability. Therefore, when the sanitary washing device 100 is detached from the toilet 200 and is cleaned or moved, the sanitary washing device 100 is inclined and water in the open tank 180 leaks, and a deodorizing fan provided in the casing 120 Occurrence of a situation where the control device 160 is flooded can be prevented. In addition, it is possible to suppress the decay of the residual water due to the water remaining in the open tank 180 for a long time. Furthermore, since the cleaning pump 191 for supplying water toward the water discharge nozzle 131 is also used for draining the water in the open tank 180, the sanitary washing apparatus 100 does not need to have a separate means for draining water and is low in cost. A compact configuration is possible.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In the above embodiment, when the seating sensor 162 is in the non-detection state, the control device 160 determines that the sanitary washing device is not being used, and drains the water from the open tank 180. However, the present invention is not limited to this, and instead of the seating sensor 162, a toilet lid closing detection sensor that detects that the toilet lid 130 is in the closed state is provided, and the hygiene is based on the detection state of the toilet lid closing detection sensor. It may be determined that the cleaning device is not in use. That is, since the toilet lid closing detection sensor detects the closing of the toilet lid 130, it may be determined that the sanitary washing device is not being used, and the open tank 180 may be drained. Thereby, it is possible to prevent the occurrence of a situation that impairs the usability of the sanitary washing device, such as draining water from the open tank 180 even though the sanitary washing device is being used. Further, instead of the seating sensor 162 and the toilet lid closing detection sensor, a toilet use detection sensor for detecting that the user stands in front of the toilet device and an entrance sensor for detecting the user who has entered the toilet room can be used. In addition, as a user operation that can be considered as having finished using the sanitary washing function, for example, when the local drying switch is pressed after stopping the operation mode such as butt washing and bidet washing, or the execution of toilet cleaning is detected In such a case, the water in the open tank 180 may be drained based on the detection.

  Further, for example, a drain switch may be provided on the outer surface of the casing 120, and the controller 160 may drain the water in the open tank 180 when the user operates the drain switch. As a result, when the sanitary washing apparatus is in a state of waiting for use, water is left in the open tank 180 so that the water discharge from the water discharge nozzle 131 can be quickly started, and cleaning and relocation are performed. At the start of work, water can be drained from the open tank 180 to prevent other parts in the casing 120 from getting wet.

  As for each element included in the sanitary washing apparatus of the present invention, those skilled in the art can implement the present invention in the same manner by appropriately changing the design, and the same effects can be obtained as long as the gist of the present invention is included. It is included in the scope of the invention.

DESCRIPTION OF SYMBOLS 10 Toilet apparatus, 100 Sanitary washing apparatus, 110 Main body part, 120 Casing, 121 Case cover, 130 Toilet lid, 131 Water discharge nozzle, 140 Deodorizing unit, 142 Deodorizing fan, 150 Heat exchanger, 151 Heater, 152 Hot water outlet, 160 Control Equipment, 170 Water supply valve unit, 180 Open-type tank, 181 Inlet, 184 Inlet member, 185 Tank body, 186 Tank lid, 186a Outlet, 187 Float switch, 191 Washing pump, 200 Toilet, 500 Water pipe

Claims (2)

A water discharge nozzle that discharges water toward the human body part;
A water supply channel for supplying water to the water discharge nozzle;
An open tank provided in the water supply channel,
The tank body,
An inlet for allowing water to flow into the tank body;
An outlet for allowing water inside the tank body to flow out to the water discharge nozzle;
An overflow port provided so as to form an air gap with the inflow port, and discharging excess water inside the tank body to the outside;
An open tank with
A cleaning pump that is provided in the water supply channel downstream of the open tank, draws water from the outlet, and supplies the water downstream of the water supply channel;
A casing for housing the open tank;
A toilet seat provided with a seating detection mechanism that is attached to the casing and detects whether or not a user is seated;
In a sanitary washing device equipped with
In the state where the seating detection mechanism detects the seating of the user and the water is not discharged from the water discharge nozzle, water is accumulated inside the tank body,
The sanitary washing apparatus according to claim 1, wherein when the seating detection mechanism does not detect the seating of the user, water inside the tank body is discharged. The open tank is
Provided with a water level detection mechanism for detecting the minimum water level inside the tank body,
When the seating detection mechanism shifts from a state where it does not detect a user's seating to a state where the seating detection mechanism detects a user's seating, water is supplied into the tank body,
The sanitary washing device according to claim 1, wherein water supply is stopped when the water level detection mechanism detects a minimum water level.