JPH1025785A - Sanitary washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the discharging state of wash water by installing a flow path for drainage branched from a piping connecting a heating means and a wash water nozzle and a valve for drainage opening and closing the flow path for drainage to the downstream of an air supply means and controlling the air supply means. SOLUTION: When pressure in a hot-water storage tank 17 reaches specified pressure or less, a valve is opened, a flow path 34 for drainage is branched from the downstream-side connecting piping 9 for a vacuum breaker 18, from which air is introduced into the tank 17, and a flow-regulating changeover valve 19 opening and closing the flow path 34 is mounted. A main solenoid valve 15 and a wash-water supply means are opened and air inflow from the breaker 18 to the piping 9 is prevented during a time up to stop indication after wash-water discharge to a wash water nozzle 20. The valve 19 is brought to an open state during a time when the nozzle 20 is forwarded and retreated, and a part of wash water is discharged from the flow path 34. Accordingly, the mixing of air into initial discharge water from a nozzle for washing and uncomfortable feeling can be prevented, and the force of wash water is weakened during the forwarding and retreating of the nozzle for washing and the moistening of clothing, etc., can be obviated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sanitary washing apparatus mainly used for washing an anus and the like after stool use in a toilet.

[0002]

2. Description of the Related Art In most conventional sanitary washing devices, a hot water storage tank and a washing nozzle device are housed in an integral casing, and are installed at the rear of a Western-style toilet. (Hereinafter referred to as an integrated sanitary washing device.) For example, Japanese Patent Publication No. 61-1305
Japanese Unexamined Patent Application Publication No. 6-206, No. 6 discloses that a main electromagnetic valve is opened for a predetermined time at a non-operating position of an extendable cleaning nozzle for ejecting cleaning water, and the cleaning nozzle and a heating device for heating the cleaning water are provided. The main electromagnetic valve is closed and the cleaning nozzle is brought to the operating position by the nozzle motor. Then, the main electromagnetic valve is reopened and the cleaning hot water is jetted toward the local part. A sanitary washing device configured as described above has been proposed.

In this case, as shown in FIGS. 12 and 13, a vacuum breaker is provided between the solenoid valve and the cleaning nozzle to prevent backflow. Therefore, when the main solenoid valve is closed,
Air flows into the pipe from the vacuum breaker (FIG. 12). Therefore, when the main solenoid valve is opened again, the air in the pipe is conveyed to the cleaning nozzle in a compressed state by being sandwiched by the remaining water remaining in the pipe and the cleaning water supplied from the hot water storage tank. (FIG. 13). Then, when it reaches the cleaning nozzle, it is released at a stretch. For this reason,
The initial discharge water from the cleaning nozzle is sprinkled and discharged. In the case of an integrated sanitary washing device, since the piping from the vacuum breaker to the washing nozzle is short, so much air does not flow into the washing device, and this phenomenon is not so bothersome.

Incidentally, for example, Japanese Patent Application Laid-Open No. Sho 60-14443.
No. 5 discloses a cleaning device in which a cleaning nozzle is arranged to extend freely at a rear portion of a cleaning device main body formed so as to be mountable along an upper edge surface of a Japanese-style toilet except for a hidden portion of the gold. A heating device installed separately from the cleaning device main body in a hot water pipe taken out from a part of the main body. A sanitary washing device connected to a water supply device has been proposed.

[0005] In addition, among those installed in a Western-style toilet, for example, the one disclosed in Japanese Patent Publication No. 5-40090 is a method in which washing water heating / delivery means installed on the floor and a Western-style toilet and a toilet seat are fixed. There has been proposed a sanitary washing device which is provided with a mounting plate and which is provided separately from the washing water heating / delivery means, and which comprises a connecting pipe connecting them.

As described above, a sanitary washing apparatus (hereinafter, referred to as a separate type sanitary washing apparatus) in which a hot water storage tank which requires a relatively large installation space and a washing nozzle which must be installed near the toilet is separated. If there is a relatively narrow toilet space,
It can be installed in places where conventional integrated sanitary washing devices such as Japanese style toilets cannot be installed. However, on the other hand, there is a disadvantage that the connecting pipe for connecting the hot water storage tank and the cleaning nozzle becomes long.

Therefore, in such a separated type sanitary washing apparatus, the problem of the initial discharge of water from the washing nozzle caused by the inflow of air from the vacuum breaker or the like into the pipes does not even make the user uncomfortable. Will give.

[Problems to be solved by the invention]

It is an object of the present invention to provide a sanitary washing apparatus in which air flowing into a pipe from a vacuum breaker or the like is not discharged from a washing nozzle during a series of washing operations.

[0009]

Means for Solving the Problems and Their Functions / Effects: A washing nozzle for jetting washing water to wash a local area, a heating means for heating the washing water, and discharge and stop of the washing water by a toilet user. Operating means for instructing, washing water supply means for supplying washing water to the washing water discharging means by operation of the operating section, and the washing nozzle being movable back and forth between a predetermined position between a non-operation position and an operation position. A nozzle driving means for moving, a connecting pipe connecting the heating means and the washing water supply means, and a pipe disposed at a predetermined position higher than a washing nozzle in the middle of the connecting pipe, and supplying air to the pipe only when washing water discharge is stopped. In a sanitary washing device comprising an air supply unit for supplying, a drainage channel branched from the pipe downstream of the air supply unit, and a drainage valve for opening and closing the drainage channel are provided. release During the period from shown to stop instruction, holds the cleaning water supply means to the open state,
During the period when the nozzle driving unit is being driven, a control unit that opens the drain valve is provided, so that during the period from the release instruction to the stop instruction of the operation unit, air is supplied from the air supply unit. Since it does not flow into the pipe, there is no discomfort due to the initial discharge of water from the cleaning nozzle caused by the flow of air during a series of cleaning operations. In addition, during the period when the nozzle driving unit is being driven, a part of the cleaning water supplied from the cleaning water supply unit is discharged from the drain channel, so that the cleaning water discharge force from the cleaning nozzle is weakened. . Therefore, there is no danger that the washing water jumps out of the washing nozzle and wets the clothes of the user.

Further, when the drain valve is constituted by a flow path switching valve for switching the flow path between the drain flow path side and the cleaning nozzle side, the discharge is performed from the cleaning nozzle during driving of the nozzle driving means. Never.

Further, when the flow path switching valve is constituted by a flow rate control valve capable of adjusting the flow rate on the drain flow path side, the amount of discharge from the drain flow path during driving of the nozzle driving means is reduced. Can be. Therefore, the amount of water used can be reduced.

Further, the cleaning device main body is formed so as to be mountable along the upper edge surface of the Japanese style toilet except for the gold hidden portion, and has a cleaning nozzle disposed at the rear so as to be able to advance and retreat, and the cleaning device main body is separated. A controller box having a built-in heating means / washing water supply means, a connecting pipe connecting the washing nozzle and the heating means / washing water supply means, and a predetermined position higher than the washing nozzle in the middle of the connecting pipe. An operating means for instructing the discharge / stop from the cleaning nozzle, and an operating means for instructing the cleaning nozzle, A nozzle driving unit that moves freely between a predetermined position between a non-operation position and an operation position, a drain channel branched from the pipe downstream of the air supply unit, and the drain channel is opened and closed A drain valve is provided, and during the period from the discharge instruction to the stop instruction of the operating means, the washing water supply means is kept open, and during the period of driving the nozzle driving means, Since the control means for opening the drain valve is provided, no air flows from the air supply means into the pipe during the period from the release instruction of the operation means to the stop instruction. There is no discomfort due to the initial discharge of water from the cleaning nozzle caused by air flowing into the cleaning nozzle. In addition, during the period when the nozzle driving unit is being driven, a part of the cleaning water supplied from the cleaning water supply unit is discharged from the drain channel, so that the cleaning water discharge force from the cleaning nozzle is weakened. . Therefore, there is no danger that the washing water jumps out of the washing nozzle and wets the clothes of the user.

Further, when the air supply means is a vacuum breaker, it is possible to prevent the backflow from the cleaning nozzle during the stoppage of the water discharge.

Further, when the cleaning nozzle is not at the operating position, the flow rate of the cleaning water supplied from the cleaning water supply means is smaller than when the cleaning nozzle is at the operating position. Since only a minimum amount of water is required to prevent air from entering the nozzle, the amount of water used can be reduced.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of the present invention will be described below. FIG. 1 is an external view of a Japanese-style toilet 1 equipped with a sanitary washing device 5 according to one embodiment of the present invention.

First, the overall configuration of the sanitary washing device 5 shown in FIG. 1 will be described. As shown in the figure, the sanitary washing device 5 extends a washing nozzle 20 at a rear portion of a washing device main body 6 formed so as to be placed along the upper edge surface 4 of the Japanese style toilet 1 excluding the gold hidden portion 3. In addition, a hot water storage tank 17 for heating the cleaning water and discharging at a set temperature is built in,
A controller box 8 having an operation unit 10 for performing various operations is arranged on the upper surface in front of the Japanese style toilet 1, and the controller box 8 and the cleaning device main body 6 are connected by a connection pipe 9.

Next, a description will be given of a water channel configuration from the supply of water of a predetermined water pressure from the water supply system to the injection of cleaning water from the cleaning nozzle 20. FIG. 2 is an explanatory diagram mainly showing a water channel configuration, and FIG. 3 is a schematic configuration diagram showing this together with electric components. The water supply pipe is connected to supply toilet flushing water to a toilet flushing tank (not shown) which is usually provided near the Japanese style toilet 1, but when the sanitary flushing device 5 of the embodiment is attached. Is, as shown in FIG.
A branch fitting 11 is provided in the water supply pipe so that tap water can be introduced into the sanitary washing device 5. The water supply pipe branched by the branch fitting 11 is connected to the controller box 8 via a flexible hose 12 for connection and a water supply adapter 13, and the hot water storage tank 1 in the controller box 8 is connected.
7 is supplied with clean water.

As shown in FIGS. 2 and 3, the sanitary washing device 5 mainly includes a water supply valve unit A, a heat exchange unit B, a flow control switching valve unit C, and a nozzle unit (washing nozzle device) D. Have been. The water supply valve unit A, the heat exchange unit B, and an electronic control unit 30 described later are built in the controller box 8, and the nozzle unit D (washing nozzle device) and the flow control switching valve unit C are installed in the cleaning unit body 6. A water passage is connected between the heat exchange unit B and the flow control switching valve unit C by a resin tube or the like, and the electronic control unit 30, the flow control switching motor 27, the nozzle motor 28, and the like are connected to a signal line and a power line. And are connected by. Further, the resin tube and the like, the signal line and the power line are covered with a decorative case 31 (FIG. 7), and the resin tube and the like, the signal line and the power line are formed by external pressure (for example, stepping on by a user) or water droplets. Protected.
The water supply valve unit A is a unit that receives supply of tap water from the water supply adapter 13 and supplies the tap water to the heat exchange unit B. The heat exchange unit B has a hot water storage tank 17, heats and maintains water supplied from a water supply pipe at an appropriate temperature (40 ° C. in the embodiment), and supplies it to the flow control switching valve unit C. The flow control switching valve unit C adjusts the flow rate of hot water controlled to an appropriate temperature by the heat exchange unit B and supplies hot water to the nozzle unit D (washing nozzle device). The nozzle unit D (cleaning nozzle device) is a unit that jets the supplied hot water from a desired nozzle.

The structure of the sanitary washing device 5 will be described with reference to FIGS. As shown in the figure, the water supply valve unit A provided at the most upstream side of the water supply pipe in the sanitary washing device 5 operates by receiving supply of tap water. The water supply valve unit A incorporates a pressure reducing valve 14, a main solenoid valve 15, and a safety valve 16 as main components. The water path connecting the pressure reducing valve 14 and the main solenoid valve 15 is called a primary water main flow path. The pressure reducing valve 14 is provided as a pressure regulating valve for protecting the sanitary washing device 5 itself from the pressure of the water source in the primary water main flow path. A main solenoid valve 15 is connected to the secondary side of the pressure reducing valve 14. The secondary flow path of the main solenoid valve 15 is connected to a hot water storage tank 17 included in the heat exchange unit B via a safety valve. The safety valve 16 is provided to protect the hot water storage tank 17 from a temporary increase in the pressure of the primary water main passage, and when the pressure of the primary water main passage temporarily increases, the overflow passage 33 is provided. By discharging the water in the primary side main flow path into the toilet bowl 2 of the toilet through the discharge port 21 provided near the washing nozzle via the, the pressure above a certain pressure is not applied to the hot water storage tank. The main solenoid valve 15 is a water supply means (wash water supply means) for pushing out the wash water stored in the hot water storage tank to the cleaning nozzle device via the connection pipe 9 by applying tap water pressure to the hot water storage tank and supplying the same. Function as

Next, the structure of the heat exchange unit B for heating the tap water flowing through the water supply valve unit A and supplying it to the flow control switching valve unit C as appropriate temperature water will be described. In the hot water storage tank 17 provided in the heat exchange unit B, a heater 22 (heating means) for heating the stored water is provided as shown in FIGS. The heater 22 is controlled on and off by a temperature control device 29 to heat the stored water to a predetermined temperature (40 ° C. in the embodiment) and maintain the temperature. If the stored hot water flows out,
A decrease in water temperature is detected by the hot water thermistor 25, and the heater 22 is energized to heat the water. The hot water storage tank 17
Inside, a float switch 26 and hot water storage tank 17
Are provided with a bimetal 23 and a temperature fuse 24, respectively. When the amount of water in the hot water storage tank 17 becomes equal to or lower than a predetermined value or when the temperature of the hot water in the hot water storage tank 17 becomes equal to or higher than a predetermined temperature, heating by the heater 22 is performed. Is not performed.

The hot water storage tank 17 is connected to an outflow channel 32 (connecting pipe 9) for allowing the appropriate-temperature water to flow out.
In the middle of the outflow channel 32 (the connection pipe 9), a vacuum breaker 18 also serving as a check valve is provided at a position higher than the water level of the hot water storage tank 17. Vacuum breaker 1
The valve 8 opens when the pressure of the appropriate temperature water in the hot water storage tank 17 becomes higher than a predetermined value, and flows the appropriate temperature water to the outflow passage 32 (connection pipe 9). When this happens, the valve closes. At this time, air is introduced through an air introduction hole (not shown), and an air gap is formed in the hot water storage tank 17. Thus, the vacuum breaker 18 prevents the backflow of the sewage entering from the washing nozzle. An overflow channel 33 is also connected to the vacuum breaker 18, and water discharged when forming an air gap is discharged through the overflow channel 33 to the discharge port 2.
1 to be discharged.

Next, the flow control switching valve unit C will be described. The hot water heated and heated in the hot water storage tank 17 of the heat exchange unit B flows into the flow control switching valve unit C from the inlet as shown in FIG. FIG. 5 is an exploded perspective view of the flow control switching valve unit C. The flow control switching valve unit C includes a housing 43, a shaft 42 rotated by the flow control switching motor 27, a rotor 40 connected to the shaft 42 and urged by a spring 44, and a stator 41 to which the rotor 40 is pressed by the spring. It is configured.
A stator 4 is provided between the stator 41 and the housing 43.
1. A packing 45 for partitioning the communication hole provided in 1 to communicate with a drain outlet 46 and a nozzle outlet 47, respectively.
Is provided. As shown in FIGS. 4 and 5, the surface of the rotor 40 on the side of the stator 41 is partially cut away to form a hot and cold water passage 48.

The rotor 40 is rotated by the flow control switching motor 27 with respect to the fixed stator 41.
When the passage 48 coincides with the drain outlet 46, the flow control valve and the flow path switching valve 19 (hereinafter, referred to as a flow control switching valve).
-Is supplied only to the drain passage 34 formed integrally with the housing 43, and in a state where the passage coincides with the nozzle outlet 47, the flow control switching valve 19 outputs the nozzle passage 3
5 (Fig. 5). The drain outlet 46 and the nozzle outlet 47 formed in the stator 41 are shown in FIG.
As shown in FIG.
8 and the water discharge amount is changed. In the period from, the maximum amount of water is supplied to the nozzle flow channel 35, and in the period from, the amount of water discharged to the nozzle flow channel 35 is gradually reduced, and the water is supplied to the drain flow channel 34. In the period from, the drainage flow path 34
Is supplied with the maximum amount (a smaller amount than the maximum amount of water supplied from the nozzle flow path 35), and during the period from the time, the amount of water discharged to the drainage flow path 34 is gradually narrowed, and the water is slightly passed. During the period up to, neither the drain channel 34 nor the nozzle channel 35 is supplied with water. Is slightly passed, the amount of water discharged from the nozzle flow path 35 gradually increases during the period (14). It should be noted that the relationship between the rotation angle and the amount of water discharged is different as shown in the figure from the period slightly after the period to the period of (14). ▲
Although the nozzle-side water discharge amount is set to the maximum amount during the period from 14) to <15>, this period is not used in this embodiment. With this configuration, the flow control switching valve 19
Functions as flow rate adjusting means and flow path switching means.

In this embodiment, the flow control switching valve unit C
Is provided in the main body 6 of the cleaning device. However, when the device is provided in the controller box 8, the pipe from the flow control switching valve 19 to the cleaning nozzle 20 becomes longer, so that the user can adjust the flow rate. Immediately after the adjustment, the water is not immediately discharged at the adjusted set flow rate, so that there is a problem that it is impossible to immediately respond to the user's request, and a problem that the residual water treatment itself cannot be performed.

Nozzle unit D (cleaning nozzle device)
Is composed of a cleaning nozzle 20 and a nozzle motor 28. The cleaning nozzle 20 is for jetting cleaning water toward a local portion, and the cleaning nozzle 20 is advanced from the nozzle motor 28 when cleaning is used, and is retracted when not in use or during nozzle cleaning.

Next, the internal mechanism of the above-described cleaning device main body 6 will be described. FIG. 7 is an exploded perspective view of the cleaning device main body 6.

The cleaning device main body 6 forms an outer shell by an upper case 61 and a lower case 62, and has therein the flow control switching unit C and the nozzle unit D (a cleaning nozzle device).
And built-in. The upper case is provided with a nozzle extension 63 through which the cleaning nozzle 20 extends. Also,
A drain port 21 is provided in the lower case 62 so as to face the inside of the toilet bowl 2.
3. The end of the resin tube forming the drain passage 34 is fixed with a clip or the like.

The flow path configuration of the sanitary washing device has been outlined above. The configuration for controlling the valves such as the flow control switching valve 19 and the nozzle motor 28 will be described. FIG. 8 is a block diagram showing an electrical connection relationship centering on the electronic control unit 30. The electronic control unit 30 is configured as a logical operation circuit centered on a microcomputer, and includes therein a CPU 50 that executes various operation processes for controlling the temperature of the washing water and the like in accordance with a preset control program; A ROM 51 in which a control program, control data, and the like necessary for executing various arithmetic processes are stored in advance; a RAM 52 for temporarily reading and writing various data necessary for performing various arithmetic processes in the CPU 50; An input processing circuit 53 for inputting a detection signal from each sensor or a signal from a switch and converting the signal into a signal that can be processed by the CPU 50, and outputs a drive signal to the main solenoid valve 15 and the like according to the calculation result of the CPU 50. An output processing circuit 54 and the like are provided.

The output processing circuit 54 includes the above-described water supply valve unit A (main solenoid valve 15), heat exchange unit B (heater 22), flow control switching valve unit C (flow control switching motor 27), and cleaning nozzle unit D. (Nozzle motor 28)
Etc. are connected.

The input processing circuit 53 includes an operation unit 10
Switches provided in the unit and the heat exchange unit B described above.
, A hot water thermistor 25 and a float switch 26 are connected. Various switches provided in the operation unit 10 shown in FIG. 1 and connected to the input processing circuit 53 include a posterior washing button 70, a stop button 71, a water amount adjusting button 72 for adjusting a water discharge amount, and a water amount adjusting button 72 for adjusting a water discharge temperature. Temperature setting button 73 and the like.

Next, the operation of the sanitary washing device 5 will be described. Tap water in the primary water main flow path is reduced to a predetermined pressure by the pressure reducing valve 14 and is added to the main electromagnetic valve 15. Now, with the power on, the buttocks cleaning button 70
Is turned on, the main solenoid valve 15 opens. When the main solenoid valve 15 is opened, tap water can be supplied into the hot water storage tank 17.
The temperature adjustment of the appropriate temperature water in the hot water storage tank 17 is performed by on / off control of the heater 22 by the temperature adjustment device 29 which receives a control signal from the electronic control device 30. Main solenoid valve 15
Is open and the original pressure is applied, the optimal temperature water in the hot water storage tank 17 is
After passing through the vacuum breaker 18, it is sent to the flow control switching valve 19. The flow control switching motor 27 of the flow control switching valve 19 rotates based on a program cleaning process described later, and performs a series of cleaning operations.

Next, a program cleaning process executed by the electronic control unit 30 will be described. In the embodiment, the program cleaning process includes processes such as residual water treatment, pre-nozzle cleaning, main cleaning, post-nozzle cleaning, and nozzle drainage. FIG. 9 is a timing chart of all these processes.
It was shown to. In addition, among these processes, processes excluding post-nozzle cleaning and nozzle drainage are shown in the flowchart of FIG.

From the timing chart of FIG.
▼ indicates the rotor 4 with respect to the stator 41 in FIG.
Indicates the position of 0. Therefore, for example, when the control for shifting the flow control switching valve 19 from the start of the residual water treatment to the start of the pre-washing is executed, the water supply to the nozzle side flow path 35 is gradually reduced, and the water supply to the discharge side flow path 34 is performed. Become like In this embodiment, the flow control switching motor 27 operates in synchronization with the power supply frequency, and has a step angle of 3 ° per cycle. Therefore, when used at a power frequency of 60 Hertz, a maximum rotation of 180 ° is made per second.

The processing shown in FIG.
0 is operated, first, the input processing circuit 53
A process of reading various detection signals via the CPU is performed (step 101). Various detection signals include the hot water thermistor 25
And the state of various switches of the operation unit 10.

Next, the current operation period is determined (step 102). Since the electronic control unit 30 controls a series of cleaning operations from the residual water treatment to the nozzle drainage,
It is always determined how far the cleaning operation has progressed, and necessary processes are sequentially performed. Immediately after the operation of the posterior washing button 70, since the residual water treatment is performed, first, the main solenoid valve 15 is opened (Step 103), and the cold water remaining in the outflow passage 32 (the connecting pipe 9) is discharged through the outlet 21. And drain into the toilet bowl. It is determined whether the operation is a cleaning button operation during a nozzle drainage period described later (step 104). If the cleaning button is operated during the nozzle drainage period, the next pre-cleaning process is performed without performing the residual water treatment. This is because, although the residual water in the outflow passage 32 (the connection pipe 9) is not cooled, it is useless to perform the residual water treatment. In the present embodiment, the remaining water treatment period takes about 2 seconds. Therefore, by eliminating the treatment, the water can be re-discharged earlier. It should be noted that, from FIG.
It takes only about 0 milliseconds, but it takes about 2 seconds to move from the residual water treatment to the start position of the residual water treatment.

When the period of the residual water treatment is completed, it is determined that the pre-cleaning period has come (step 102), and the flow control switching valve 19 is moved to the pre-cleaning position (step 10).
5). As a result, warm water is discharged from the cleaning nozzle device. In this state, since the cleaning nozzle device is at the storage position, the hot water passes through the nozzle hole of the cleaning nozzle device and cleans it. This is called pre-cleaning.

When the pre-cleaning period is completed, it is determined that the period for extending the nozzle has come (step 102), and the process shifts to a process for controlling the nozzle motor 28 and a process for controlling the flow control switching valve 19 (step 102). Step 106, Step 10
7). During this period, the flow control switching valve 19 moves to a position slightly opened to the drainage channel side, so that water is discarded from the drainage channel side. This is during a series of cleaning operations as described below.
This is because, since the main solenoid valve 15 is held in the open state, the pressure in the outflow channel 32 (the connection pipe 9) and the hot water storage tank 17 increases when the water stop position is set.

When the nozzle extension is completed, the main cleaning is started next. In this cleaning process, the flow control switching valve 19 is controlled so as to increase its opening in a stepwise manner (step 108). As a result, hot and cold water whose flow rate is controlled is jetted from the cleaning nozzle device toward the local area.

In the state where each of the cleaning processes described above is being performed, the user who wishes to stop the cleaning is provided with the stop button 71.
Operate. Whether or not the stop button 71 has been operated can be detected at any stage of each cleaning process. Until this is detected, the above-described cleaning processes are sequentially performed, and the main cleaning process is continued. When the operation of the stop button 71 is detected, the main electromagnetic valve 15 is closed, and a series of cleaning processes is stopped. FIG. 11 shows a flowchart of the processing after the stop button 71 is operated.

The process shown in FIG. 11 is started when the stop button 71 is operated, and first, a process of reading various detection signals via the input processing circuit 53 is performed (step 20).
1).

Since the electronic control unit 30 controls a series of washing stop operations from the nozzle standby to the nozzle drainage, the electronic control unit 30 constantly determines how far the washing stop operation has progressed (step 202), and sequentially performs necessary processing. Immediately after the operation of the stop button 71, the process of waiting for the nozzle is performed. Therefore, first, the movement of the flow control switching valve 19 to the draining position when the nozzle extends is started (step 203). Accordingly, the water level of the cleaning water discharged from the nozzle gradually weakens, and the discharge port 21
Will be drained from At this time, the nozzle is still extended.

When the nozzle standby period ends, it is determined that the period for storing the next nozzle has come.
(Step 204). During this period, the flow control switching valve 19 is located at a position slightly opened to the drainage channel side, so that the water is drained from the drainage channel. This is because the main solenoid valve 15 is kept open during a series of washing operations as described later, so that when the water stop position is set, the outflow passage 32 (the connecting pipe 9) and the hot water storage tank 17 Is increased.

When the nozzle storage is completed, it is determined that the period for performing the post-cleaning has come (step 202), and the process for controlling the flow control switching valve 19 is started. As a result, hot water is discharged from the cleaning nozzle device (step 205). In this state, the cleaning nozzle device is in the storage position,
The hot water passes through the nozzle holes of the cleaning nozzle device to clean it. This is called post-washing. During this period, the flow adjustment switching motor 27 of the flow adjustment switching valve 19 is returned to the origin position, and the origin is adjusted. When it is time to complete the origin adjustment (step 206), the main solenoid valve 15
Is closed (step 207), the flow control switching valve 19 is moved to the pre-cleaning position, and the process waits (step 208). When the post-cleaning process is completed, the nozzle water draining process is performed next.
After a lapse of a predetermined time (25 seconds in this embodiment) from the end of the post-cleaning process (step 209), the main solenoid valve 15 is set to a predetermined period (in order to drain water from the outflow passage 32 (the connection pipe 9) and the nozzle) (step 209). In this embodiment, the opening state is set (0.1 second) (step 211). After a predetermined time (5 seconds in this embodiment) elapses after the main solenoid valve 15 is operated, the flow control switching motor 27
Is moved from the pre-cleaning position to the residual water treatment position, and a series of cleaning stop operations is terminated (step 212). In addition, when the bottom cleaning button 70 is pressed during the nozzle drainage processing period, the residual water processing is not performed. Therefore, in the cleaning processing flow, it can be seen that the operation was performed during this period. Set a flag in step (step 21
0).

As is evident from the time chart of FIG. 9, the main solenoid valve 15 is always kept open from the time the posterior washing button 70 is turned on until the stop button 71 is operated to complete the post-washing. ing. It is conceivable to close the main solenoid valve 15 when the nozzle extends.
If the main solenoid valve 15 is closed at this time, since the vacuum breaker 18 is located downstream of the main solenoid valve 15, air flows into the piping. Abnormal noise may be generated, and water discharge may be interrupted during the main cleaning, which may give a user an unpleasant sensation. The same can be considered when the nozzle is housed.

[Brief description of the drawings]

FIG. 1 is an external view showing a Japanese style toilet 1 equipped with a sanitary washing device 5 according to one embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a flow of hot and cold water in the sanitary washing device 5;

FIG. 3 is a schematic configuration diagram showing a configuration of a sanitary washing device 5.

FIG. 4 is a sectional view showing the structure of a flow control switching valve unit C.

FIG. 5 is an exploded perspective view of a flow control switching valve unit C.

FIG. 6 is a water discharge amount characteristic diagram showing a relationship between a rotation angle of a rotor 40 of a flow control switching valve with respect to a stator 41 and a water discharge amount.

FIG. 7 is an exploded perspective view of the cleaning device main body 6.

FIG. 8 is a block diagram showing an electrical configuration centering on the electronic control unit 30;

FIG. 9 is a time chart showing the contents of a series of cleaning processes executed when the posterior cleaning button 70 is operated.

FIG. 10 is a flowchart showing the contents of a series of cleaning processing executed when the posterior cleaning button 70 is operated.

FIG. 11 is a flowchart showing a series of cleaning processes performed when a stop button 71 is operated.

FIG. 12 is a diagram illustrating a state in which air flows into a pipe from a vacuum breaker when a main solenoid valve of a conventional sanitary washing device is closed.

FIG. 13 is a state explanatory view illustrating the state of air that has flowed into the pipe from the vacuum breaker when the main solenoid valve of the conventional sanitary washing device is opened after being closed.

[Explanation of symbols]

Japanese-style toilets ... 1, toilet bowls ... 2, toilet concealed parts ... 3,
Upper edge of toilet bowl ... 4, sanitary washing device ... 5, body of washing machine ...
6, controller box… 8, connecting pipe… 9, operation part… 10, branch fitting… 11, flexible hose… 12, water supply adapter… 13, pressure reducing valve… 14, main solenoid valve… 15, safety valve… 16, hot water storage tank… 17 , Vacuum breaker ...
18, flow control switching valve ... 19, cleaning nozzle ... 20, discharge port ... 21, heater ... 22, bimetal ... 23, temperature fuse ... 24, hot water thermistor ... 25, float switch ...
26, flow control switching motor ... 27, nozzle motor ... 28, temperature control device ... 29, electronic control device ... 30, makeup case ...
31, outflow channel 32, overflow channel 33, drain channel 34, nozzle channel 35, rotor 40,
Stator 41, shaft 42, housing 43
Spring 44, packing 45, drain outlet 46, nozzle outlet 47, passage 48, CPU 50, ROM
51, RAM ... 52, input processing circuit ... 53, output processing circuit ... 54, washing machine main body upper case ... 61, washing machine main body lower case ... 62, nozzle extension outlet ... 63, packing ... 64, butter cleaning button ... 70, Stop button ... 71, water amount adjustment button ... 72, temperature setting button ... 73

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Hiroaki Kodama 100, Maeda-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside (72) Inventor Masaki Miyashiro 100, Maeda-cho, Totsuka-ku, Yokohama-shi, Kanagawa Koito Kogyo Inside the corporation

Claims (6)

[Claims] 1. A washing nozzle for jetting washing water to wash a local area, a heating means for heating the washing water, an operating means for instructing a user of the toilet to discharge and stop the washing water, and the operating section Cleaning water supply means for supplying cleaning water to the cleaning water discharge means by the operation of; nozzle driving means for moving the cleaning nozzle forward and backward between a predetermined position between a non-operation position and an operation position; A connecting pipe for connecting the means and the washing water supply means, and an air supply means disposed at a predetermined position higher than the washing nozzle in the middle of the connecting pipe and supplying air to the pipe only when washing water discharge is stopped. In the cleaning device, a drain channel branched from the pipe and a drain valve for opening and closing the drain channel are provided downstream of the air supply unit, and a drain valve for opening and closing the drain channel is provided during a period from a release instruction to a stop instruction of the operation unit. Is before A sanitary washing apparatus comprising: a control unit for holding the washing water supply unit in an open state and for opening the drain valve while the nozzle driving unit is being driven. 2. The sanitary washing apparatus according to claim 1, wherein the drain valve is constituted by a flow path switching valve for switching a flow path between the drain flow path side and the cleaning nozzle side. Cleaning equipment 3. The sanitary washing apparatus according to claim 2, wherein said flow path switching valve is constituted by a flow rate control valve capable of adjusting a flow rate on said drainage flow path side. 4. A washing machine main body which is formed so as to be able to be placed along an upper edge surface of a Japanese style toilet excluding a gold hidden portion and in which a washing nozzle is arranged at a rear portion so as to be able to advance and retreat, the washing machine main body is separated. A controller box having a built-in heating means / washing water supply means, a connection pipe connecting the cleaning nozzle and the heating means / wash water supply means, and a predetermined position higher than the cleaning nozzle in the middle of the connection pipe. An operating means for instructing the discharge / stop from the cleaning nozzle, and an operating means for instructing the cleaning nozzle, A nozzle driving means for freely moving between a predetermined position between a non-operating position and an operating position, a drain passage branched from the pipe downstream of the air supply means, and a drain opening and closing the drain passage. A valve for maintaining the cleaning water supply means in an open state during a period from a discharge instruction to a stop instruction of the operation means, and a drainage valve for driving the nozzle driving means. Control means for opening the valve; and a sanitary washing device provided with the control means. 5. The sanitary washing apparatus according to claim 1, wherein said air supply means is disposed at a predetermined position higher than said washing water discharge means in said connecting pipe, and said heating means is provided during said washing water discharge. A sanitary washing device comprising a vacuum breaker for supplying heated water from the pipe into the pipe, and supplying air into the pipe in order to prevent a backflow from the cleaning nozzle side during the stoppage of water discharge. 6. The sanitary washing apparatus according to claim 1, wherein when the washing nozzle is not in the operating position, the flow rate of the washing water supplied from the washing water supply means is adjusted by the operating position of the washing nozzle. Sanitary washing device characterized in that it supplies less than when in