JPH0660504B2 - Sanitary washing equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sanitary washing device for washing local areas after use.

Conventional technology Conventionally, this type of sanitary washing device is roughly divided into water supply systems,
There were two methods. There are so-called direct water supply system and indirect water supply (pump) system. Hereinafter, the above-mentioned both types will be briefly described with reference to the drawings. FIG. 7 is an external view of an indirect water supply type sanitary washing device.
Inside the attached sanitary washing device main body 53, a pump device, a hot water device, a solenoid valve, a nozzle, and a drying device (not shown).
Etc., and the water supply method is such that the water 55 accumulated in the low tank 54 attached to the rear of the toilet is
A water supply hose 56 is supplied to a hot water device 58, a solenoid valve 59, and a nozzle unit 60 through a pump device 57 of the main body 53 shown in FIG. 8, and hot water is jetted from the nozzle unit 60 to wash a local part of a human body. It was a thing.

The features of this indirect water supply type sanitary washing device are as follows: (1) By electrically changing the rotation speed of the pump device 57, arbitrary characteristics can be obtained, and as a result, as shown in FIG. Optimal amount of washing water Q for the scale (horizontal axis)
(Vertical axis) is obtained.

(2) Further, since the amount of washing water can be easily adjusted electrically as described above, the washing flow rate adjusting function can also be performed by operating the remote controller.

(3) Further, since it is of the pump type, a constant wash water pressure flow rate can always be obtained without being affected by changes in tap water pressure.

(4) Since the water supply hose 56 is merely guided to the low tank 54 and no water supply work is required, installation is easy.

(5) Since it is a pump type, the operating noise of the pump is a little worrisome.

(6) Further, since the pump is built in, the size of the device itself becomes large. And so on.

FIG. 10 shows the appearance of a sanitary washing device directly connected to the water supply, and the water is supplied from the water pipe 61 directly to the water supply port 77 of the main body 53.

FIG. 12 shows the same water circuit. The flow of water is the water pipe 61
Through the branch pipe 62, the stopcock 63, the strainer 64,
The check valve 65, the water supply port 77, the pressure reducing valve 66, the electromagnetic valve 67, the flow rate adjusting valve 68, the heat exchanger 69, the switching electromagnetic valve 70, and the vacuum breaker 71 nozzle 72 are used. Nozzle 72
72-1 for anal cleaning and 72-2 for female local cleaning
Are provided in each. Reference numeral 73 denotes a waste water circuit, which is the flow rate of the washing water ejected from the nozzle 72 plus the waste water circuit 7.
The drainage circuit 7 so that the total flow rate flowing out from the drainage port 74 through 3 exceeds the dead water amount 50 / hr≈850 cc / min.
A throttle valve 75 is provided in the No. 3 unit.

The flow rate of the sanitary washing device of this type, which is a direct connection to the water supply, is controlled from the water supply source (water supply pipe 61) to the nozzle 72. In general, the flow rate adjusting valve 68 provided on the washing water channel 76 is manually rotated to adjust the flow rate.

The characteristic of this sanitary washing device of the direct water supply system is that it does not use a pump device etc., so it is quiet without noise, and it has the advantage that it is sanitary because it is directly supplied from the water supply. It was inferior in comparison with the following points.

As shown in the flow rate characteristic graph of FIG. 11, even if the setting scale (horizontal axis) is the same, if the water pressure Q changes,
(C) and (D) As shown by the broken line curves, there were variations and there was a problem.

(B) As the solid curve shows, the flow rate changes between the low flow rate setting scales 2-3 and between the high flow rate setting scales, and the flow rate changes up to 5-6 are 220cc / min and 30cc / min respectively. However, although the rotation angle of the same knob was 45 °, there was a problem because the flow rate change was different.

In addition, when it is considered that the flow rate can be adjusted by remote control operation (separated from the main body), a method of electrically connecting the motor apparatus to the flow rate adjustment valve and electrically operating it is also conceivable. In addition, since a motor device and a pressure reducing valve are required, they are more expensive than their functions and have not been generalized.

Problems to be Solved by the Invention There are the following two problems in the above-mentioned sanitary washing device directly connected to the water supply.

(1) Fluctuations in water pressure of the tap water immediately affect the amount of washing water.

(2) The amount of displacement of the rotation angle of the flow rate control valve and the amount of washing water do not change linearly.

Therefore, it is not convenient for the user to obtain the optimum amount of cleaning water (cleansing feeling).

Therefore, the present invention, in the sanitary washing device directly connected to the water,
As in the case of an indirect water supply (pump) type sanitary washing device, it is intended to immediately obtain an optimum washing flow rate (washing feeling) according to a user's request.

Means for Solving the Problems And, the technical means of the present invention for solving the above problems is to provide a flow rate detecting means and a flow rate adjusting means for adjusting the flow rate in the washing water passage extending from the water supply port to the washing nozzle. , A signal from the flow rate detecting means is input to the control means, and the flow rate adjusting means is energized by comparing with a set value of the flow rate setting means,
The desired amount of water (cleansing feeling) is set.

Action The action of this technical means is as follows. That is, when the user sets a desired flow rate by the flow rate setting means, the flow rate detecting means provided in the washing water channel detects a signal corresponding to the flow rate and inputs it to the control means, and the set value set by the flow rate setting means. In comparison with the above, the flow rate adjusting means is operated to control the flow rate to a desired value. In this case, even if the tap water pressure fluctuates, the flow rate detecting means detects the flow rate and feeds it back to the flow rate adjusting means, so that the wash water amount that is not affected by the change in the tap water pressure can be obtained.

Embodiment One embodiment of the present invention will be described below with reference to the accompanying drawings.

First, the water circuit will be described.

As shown in FIGS. 1 and 6, the flow of water passes from the water pipe 1, through the water stopcock 2, the strainer 3, the check valve 4, and the water supply port 5, and is a part of the flow rate adjusting means 6. It passes through the water shutoff valve 7 and the flow rate control valve 8, and branches into a two-system path here. Wash channel 78
The side passes through the flow rate sensor 10 of the flow rate detecting means 9, the heat exchanger 11 that heats water with the heater 28 to make hot water, the switching solenoid valve 12, and the vacuum break valve (vacuum breaker) 13-1 or. It is ejected from the anus washing nozzle 15-1 or the bidet nozzle 15-2 via the vacuum breaking valve 13-2. Reference numeral 79 is a drain circuit branched off on the downstream side of the flow rate control valve 8 and is provided to secure a dead water amount of 850 cc / min, and is discharged to the discharge port 18 via the vacuum break valve 13-3. It is in a row.

Next, an embodiment of the flow rate adjusting means 6 will be described.

In FIG. 2, 19 is a valve case having an inflow port 20 and an outflow port 21, and a water shutoff valve 23 made of a rubber elastic body is provided on the inflow port side in the valve case 19, and the water shutoff valve is provided. 23-a outer peripheral portion 23-a and the inner wall 1 of the valve case 19
The valve seat portion 19-b projecting from 9-a is attached to the spring 51.
It is pressed by and constitutes the water stop part. 24 is a flow rate control valve provided on the downstream side of the water shutoff valve 23,
The outer periphery is formed in a tapered shape, and the tapered outer peripheral portion 24
The gap Δ between −a and the valve receiving portion 19-d protruding from the inner wall 19-c of the valve case 19 can be adjusted by the axial movement of the valve shaft 25.

The valve shaft 25, the water shutoff valve 23, and the flow rate control valve 2
The relationship between the valve shaft 2 and the valve shaft 2 is defined by a male screw 26 provided on a part of the valve shaft 25 and a female screw 29 provided on a bearing 27.
When 5 rotates and moves to the upper side in the axial direction, first, the tip 25-a of the valve shaft 25 pushes up the water shutoff valve 23, and the water shutoff valve 2
3 is opened, and then the stepped portion 25-b of the valve shaft 25 is configured to push up the flow rate adjusting valve 24.

Reference numeral 30 denotes a motor of the motor drive unit 16, which is the valve shaft 2
The power is transmitted from the motor 30 to the valve shaft 25 by power transmission means such as a gear 31 provided at the lower end of the gear 5, and a gear 33 attached to the motor shaft 32.

Reference numerals 34 and 35 denote O-rings, which hermetically seal the valve case 19, the bearing 27, and the bearing 27 and the valve shaft 25, respectively.

Next, an embodiment of the flow rate detecting means 9 will be described.

In FIG. 2, reference numeral 36 denotes a rotating body case of the flow rate sensor 10, and an inflow port 37 of the rotating body case and an outflow port 21 of the valve case 19 are connected to each other. A conical guide boss 38 is provided at the center of the inside of the rotating body case 36, and a flow path is formed so that a rotating body 39 made of a magnetic metal such as ferritic stainless steel rotates about the guide boss 38. Is configured. That is, the flow paths of the inflow port 37 of the rotating body case 36 and the outflow port 40 of the rotating body case 36 are arranged so that the inflow port 37 flows in from the tangential direction (X arrow) of the circumference, and the outflow port 40 Are configured to flow in the axial direction (Y arrow). Reference numeral 80 denotes a branch pipe inlet portion that leads to the waste water circuit 79 provided at the rotary case inlet 37, and is connected to the discharge port 18 via a branch pipe 81. The waste water circuit branch point branches from between the flow rate control valve 23 and the flow rate sensor 10, and the flow rate setting (flow rate to the waste water circuit 79) flowing through the branch pipe 81 is 5
0 / hr≈850 cc / min The minimum amount of water flowing into the wash water circuit 79 is set. That is, even when the flow rate of water flowing through the washing water channel 78 is less than the dead water rate of 850 cc / min, the flow rate of the flow rate drainage circuit 79 flowing through the washing water channel 78 is always 850 cc / min or more of the dead water rate. Further, 54 is a cistern, 55 is water, and 52 is a toilet seat.

Reference numeral 41 denotes a detection circuit unit for detecting the number of rotations of the rotating body 39 and converting it into an electric pulse signal, which is attached to the outer wall of the rotating body case 36.

Next, an outline of electrical connection in the embodiment of the present invention will be described.

In FIG. 1, reference numeral 42 denotes an operation panel, which includes an anus washing switch 43, a bidet washing switch 44, a drying switch 45,
A stop switch 46, a strength switch 47 (setting means) for setting a desired cleaning flow rate and a desired drying temperature, and “strong” to “weak” and “high” of the cleaning flow rate and drying temperature.
A display lamp 48 for displaying "low" is provided.

Reference numeral 49 is a control unit, and the switches 43 to 47 of the operation panel 42, the detection circuit unit 41 of the flow rate detection unit 9, the hot water temperature sensor (not shown) of the heat exchanger 11, etc. are connected to the input side. The power supply section 5 is installed on the output side.
0 to the motor 30 linked with the flow rate control valve 8 of the flow rate control means 6, the heater 28 of the heat exchanger 11, the switching solenoid valve 12, the drying heater, a drying motor (not shown), etc. There is.

FIG. 3 is a control block diagram of the flow rate adjusting section of the control section 49, which shows a detected water amount signal detected by the flow rate detecting means 9,
Feedback control is performed to compare the set water amount set on the operation panel 42 and drive the (motor 30, the flow rate adjusting valve 8) according to the difference to adjust the wash water amount.

(Operation) Next, the operation of the configuration of this embodiment will be described. After the user sits on the toilet seat 52 and has a toilet, and pushes the anus washing switch 43 of the operation panel 42, first, the switching solenoid valve 12-
1 opens. After that, power is supplied to the motor 30 of the flow rate adjusting means 6, the motor shaft 32 rotates, and power is transmitted to the valve shaft 25 via the power transmission means of the gears 33 and 31, and the valve shaft 25 moves upward to stop water. Stop valve 2 by pushing up valve 23
3 has a gap between the outer peripheral portion 23-a and the valve seat portion 19-b, and since the inflow port 20 is connected to the water pipe 1, water enters due to water pressure and the flow control valve 24 of the flow control valve 24 is in the stool. A rotating body provided so as to pass through a gap Δ between the tapered outer peripheral portion 24-a and the valve receiving portion 19-d, pass through the outflow port 21, and flow in from the circumferential connection direction (X arrow) of the rotating body case 36. Case inlet 37
Through the outlet 4 in the axial direction (Y arrow) of the rotating body case 36
Flows to 0. When water flows through this rotating case 36,
Since it is made to flow in from the connecting direction of the circumference (X arrow), the rotating body 39 made of a magnetic body and provided in the rotating body case 36 is rotated about the guide boss 38 by the energy of the water flow. (Constant rotation). At this time, the detection circuit unit 41 mounted on the outer wall of the rotator case 36 close to the rotator 39 detects a frequency (Hz) corresponding to the number of rotations of the rotator as a pulse signal and sends it to the control unit 49. The set value input and set to a predetermined set value or the set value set by the user with the strength switch 47 is compared, and a signal is output from the control unit 49 as shown in the flow rate adjustment block diagram of FIG. The motor 30 of the flow rate adjusting means 6 is operated via the portion 50 to adjust the gap Δ between the tapered outer peripheral portion 24-a of the flow rate adjusting valve 24 and the valve receiving portion 19-d to set the predetermined value. It becomes the set value, that is, the set water volume.

Next, the characteristics of the sanitary washing device of this embodiment will be described.

FIG. 4 is a characteristic graph of the flow rate detecting means 9 of the embodiment,
The vertical axis represents the flow rate Q (cc / min) flowing in the rotating body case 36, the horizontal axis represents the rotation frequency (Hz) of the rotating body 40 (the number of rotations per second), and the characteristic is shown by the solid line. As shown in the table below, the setting dial of the sanitary washing device of the embodiment, the washing flow rate Q (cc / min) discharged from the anus washing nozzle 15-1 and the flow rate detection are shown. Rotation frequency (Hz) of the rotating body 40 of the means 9
Shows the relationship with.

FIG. 5 is a graph showing the flow rate Q (cc / min) discharged from the setting dial and the anus washing nozzle 15-1 shown in FIG. 5, and is discharged from the anus washing nozzle 15-1 to the joint shaft. Flow rate Q (/ min), and the horizontal axis indicates the number of set dials.

As described above, according to the sanitary washing device of this embodiment, the washing water channel 7
8 includes a flow rate detecting means 9 (corresponding to the flow rate sensor 10 rotator case 36, rotator 39, detection circuit unit 41, etc. in the embodiment) and flow rate adjusting means 6 (valve case 19 in the embodiment,
The water shutoff valve 23, the flow rate control valve 24, the motor 30, etc.), the flow rate setting means (in the embodiment, the strength switch 47, the display lamp 48, etc.) and the control section 49 are provided.
The signal detected by the flow rate detecting means 9 is input to the above, the set value set by the flow rate setting means is compared, and the flow rate adjusting valve 24 interlocked with the motor 30 of the flow rate adjusting means 6 is rotated to adjust the flow rate. Since the cleaning device for ejecting from the nozzle 15 is adjusted, the cleaning flow rate always desired by the user can be immediately obtained. In other words, even if the primary pressure (tap water pressure) fluctuates, the flow rate detecting means 9 provided in the cleaning water passage 78 (the rotor case 36, the rotor 39, the detection circuit unit 41, etc. in the embodiment).
The flow rate is detected by the flow rate adjusting means 6 (in the embodiment, the water shutoff valve 7, the flow rate adjusting valve 8, the motor 30,
Since the flow rate is controlled by the valve case 19 etc., the flow rate discharged from the nozzle 15 does not change.

That is, for example, when the primary pressure becomes high, the flow rate of the water flowing through the flow water purification passage 78 also flows with a high flow rate. However, in this embodiment, since the flow rate detecting means 9 is also provided in the washing water passage 78, the flow rate detecting means 9 immediately detects that the flow rate is high (the primary pressure is high), and the flow rate setting means. The gap Δ of the flow rate control valve 24 is made smaller in order to match the set flow rate set in 1. and the flow rate is automatically controlled to control the flow rate, so that the cleaning flow rate does not change even if the primary pressure (tap water pressure) changes. . On the contrary, even if the primary pressure becomes low, the flow rate detecting means 9 detects the flow rate and tries to open the gap Δ of the flow rate adjusting valve 24 of the flow rate adjusting means 6 largely, so that the amount of washing water ejected from the nozzle 15 is not affected.

Therefore, in the conventional sanitary washing device directly connected to the water supply, as described above, in addition to the complicated valve unit that requires processing accuracy such as a pressure reducing valve, a water shutoff valve (solenoid valve) and a flow rate control valve (manual) in the water channel, The flow rate ejected from the nozzle fluctuated due to the fluctuation of the primary pressure, but according to the present embodiment, the pressure reducing valve, the water shutoff valve (solenoid valve), the flow rate control valve, etc., which are conventionally used in the direct water supply system, are not required. The configuration as in the above-described embodiment, that is, the simple valve configuration, and the configuration that employs the control parts and the like that increase the mass productivity can be provided at low cost. Therefore, it becomes possible to control the flow rate by remote control, which has not been generalized in the conventional sanitary washing system directly connected to the water supply. Further, a flow rate detecting means provided in the washing water channel 78 (in the embodiment, the rotor case 36, the rotor 39,
By providing the detection circuit unit), the flow rate in the washing water channel is changed to the rotation frequency (Hz) of the rotating body 39,
Further, it can be taken out as an electric pulse signal. As a result, as described in the section (Prior art), the flow rate changes between the low flow rate setting graduations 2 to 3 and the high flow rate setting graduations as in the conventional sanitary washing device directly connected to the water supply. However, according to the sanitary washing apparatus of this embodiment, the problems of the conventional example can be solved.

Further, since the rotating body 39 is made of a magnetic material having a spherical shape, and the rotation frequency thereof is detected by the detection circuit unit 41 attached to the outer wall of the rotating body case 36, there is no fear of water leakage. A simple structure can be provided.

Further, since the flow rate detecting means 9 is provided on the downstream side of the flow rate adjusting means 6 in the water channel configuration, even if the primary pressure becomes high, the water shutoff valve 23 and the flow rate adjusting valve 2 of the flow rate adjusting means 6 are provided.
Since pressure reduction or pressure is not applied by means of 4, the flow rate detecting means 9 does not have to have a structure capable of withstanding high water pressure, so that it can be provided easily and at low cost.

Further, the flow control means 9 includes a valve case 19, a water stop valve 23 for opening and closing a flow path in the valve case 19, a flow control valve 24 for controlling the flow rate, a valve shaft 25, and a motor 30. Since the valve 23 and the flow control valve 24 are interlocked by the valve shaft 25, the structure is simple and the operation is reliable, so that the reliability is high. In the description of the present embodiment, the direct water supply system is used, but naturally the indirect water supply system can also provide a sanitary washing device having the above-mentioned excellent characteristics as the configuration of the present invention.

Note that the way of providing the drainage circuit 79 is generally the same as in the sanitary washing device directly connected to the water supply described in the conventional example (see FIG. 12).
Although it was often provided from the upstream side of the flow rate control valve 68,
As the primary pressure becomes higher, the amount of wastewater flowing through the wastewater circuit 79 also flows out more than necessary, so a spring is used to keep the amount of wastewater constant even if the primary pressure becomes high in the wastewater circuit 79. It was necessary to provide a so-called throttle valve 75 using the urging force such as. In the present embodiment, the branch point of the waste water circuit 79 is branched from the upstream side of the flow rate control valve 8, and even if the primary pressure fluctuates by the flow rate detection means provided in the wash water circuit, the wash flow rate set by the setting means Flow control valve 2
Since it is fed back to 4, even in the waste water circuit 79 provided from the downstream side of the flow rate control valve 24, the cross-sectional area ratios of the wash water passage 78 and the waste water circuit 79 are appropriately set without providing the throttle valve 75 and the like. A very simple water circuit can be constructed because it only needs to be done.

EFFECTS OF THE INVENTION According to the present invention, a flow rate detecting means and a flow rate adjusting means are provided in a washing water channel, a signal detected by the flow rate detecting means is input to a control unit, and the flow rate adjusting means is compared with a set value set by the flow rate setting means. (1) If the user selects the cleaning device desired by the setting means, the flow rate set by the flow rate setting means is discharged from the cleaning nozzle. Is detected and fed back to the flow rate adjusting means, and the cleaning flow rate discharged from the cleaning nozzle can be immediately obtained as desired, which is very convenient.

(2) Further, in the present invention, the change of the cleaning flow rate due to the fluctuation of the primary water pressure as in the conventional sanitary cleaning apparatus directly connected to the water supply is provided with the flow rate detecting means in the cleaning water channel, and the flow rate is detected and fed back to the flow rate adjusting means. Since the cleaning flow rate is controlled, the cleaning flow rate discharged from the nozzle is not affected by the fluctuation of the primary water pressure.

(3) Further, since the flow rate detecting means provided in the washing water channel can convert the washing flow rate into an electric signal and the flow rate setting means can adjust the washing device discharged from the nozzle, the arrangement of the flow rate setting section is not restricted. Therefore, a remote control operation type sanitary washing device can be easily used even in a sanitary washing device directly connected to a water supply.

[Brief description of drawings]

FIG. 1 is a view showing a water circuit and electrical connection of a sanitary washing device according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing a flow rate adjusting means and a flow rate detecting means of the sanitary washing device, and FIG. FIG. 4 is a control block diagram of a flow rate adjusting unit of the sanitary washing device, FIG. 4 is a characteristic diagram of a flow rate sensor adopted as a flow rate detecting means of the sanitary washing device, FIG. 5 is a relational diagram of the anal washing water amount and a setting dial, and FIG. FIG. 7 is a perspective view of the same, FIG. 7 is a perspective view of a sanitary washing device, FIG. 8 is a configuration diagram of the same water circuit, FIG. 9 is a diagram showing the relationship between the same amount of anal flushing water and a setting dial, and FIG. FIG. 11 is a perspective view of the sanitary washing device, FIG. 11 is a diagram showing the relationship between the setting dial and the amount of anus washing water, and FIG. 12 is a configuration diagram of the same water circuit. 5 ... water inlet, 6 ... flow rate adjusting means, 7 ... stop valve, 8
...... Flow rate control valve, 9 …… Flow rate detecting means, 15 …… Washing nozzle, 16 …… Motor drive section, 19 …… Valve case, 23
...... Water stop valve, 24 ...... Flow control valve, 25 ...... Valve shaft, 36
...... Rotating body case, 39 ...... Rotating body, 41 ...... Detection circuit unit.

Claims (5)

[Claims] 1. A flow rate detecting means and a flow rate adjusting means provided in a wash water passage from a water supply port to a wash nozzle, a flow rate setting means for setting a wash water jet amount from the wash nozzle to a desired flow rate, and a control section. And inputting a signal from the flow rate detecting means to the control section, comparing with a set value of the flow rate setting means, energizing the flow rate adjusting means, and setting the flow rate of the flow rate set by the flow rate setting means. A sanitary washing device that jets washing water from the washing nozzle. 2. A flow rate detecting means detects a rotating body case having an inflow port and an outflow port, a rotating body provided in the rotating body case, and the number of revolutions of the rotating body, and converts it into an electric signal. The sanitary washing device according to claim 1, further comprising: 3. The sanitary washing device according to claim 2, wherein the rotating body is made of a magnetic material. 4. A flow rate adjusting means, a valve case having an inflow port and an outflow port, a water shutoff valve for opening and closing a flow path in the valve case, and a flow rate adjustment for adjusting the flow rate of a fluid flowing in the valve case. A configuration comprising a valve, a valve shaft, and a motor drive unit, wherein the water shutoff valve and the flow rate control valve are interlocked by the valve shaft, and the valve shaft is rotated by the motor drive unit. The sanitary washing device according to claim 1 or 2. 5. The sanitary washing device according to any one of claims 1 to 4, wherein the flow rate detecting means is arranged in the wash water channel on the downstream side of the flow rate adjusting means.