JPH0340172B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a sanitary cleaning device for cleaning private parts of the human body with warm water or the like.

BACKGROUND ART A conventional sanitary washing device of this type is constructed as shown in FIG. 3, taking a washing water circuit as an example. Reference numeral 31 denotes a water supply pipe to the low tank of the toilet bowl, and the flushing water to which water pressure has been applied is branched from this water supply pipe 31 via a joint 32, and is supplied to the flushing circuit. 33 is attached to the joint 32,
It is also a water stop valve that stops or controls water flow to the cleaning circuit.From this water stop valve 33, there is a strainer 34 of the main body of the device, a solenoid valve 35 that serves as a water supply valve, a flow rate control valve 36, and a hot water tank 37. , a vacuum breaker valve 38, etc. are fluidly connected in series, and a nozzle 39 for cleaning the anal region is attached to the extreme end. In this configuration, when the user performs a cleaning operation, the solenoid valve 35 is energized and the valve body is opened, and the water pressure is transmitted to the rear, so that the hot water tank 37
The heated water is ejected from the nozzle 39 and is used to wash the anus. Note that since the washing flow rate can be controlled by the flow rate control valve 36, the amount of hot water can be adjusted to suit the user's preference. Generally, when cleaning the anus, etc., the optimal cleaning flow rate is about 0.4 to 0.8/min, but in fluid equipment with such a relatively low flow rate, it is extremely difficult to manage water pressure using a pressure reducing valve or the like. Therefore, when the water pressure is high and the flow control valve 36 is fully opened, the nozzle 3
Since the flow rate ejected from 9 becomes extremely large, it is not only unsuitable for cleaning the anal area, but also creates a dangerous situation. In this case, there is no problem if the user adjusts the flow rate control valve 36 carefully and tries to obtain the optimum flow rate, but it is easy to open the flow rate control valve 36 fully by mistake. It is. As a means to avoid such a dangerous situation, generally the water stop valve 33 is throttled to increase the pressure loss at the water stop valve 33 part to reduce the water pressure, and the maximum flow rate when the flow rate control valve 36 is fully open is reduced. A method is being used to optimally adjust the

Problems to be Solved by the Invention However, there are various problems even when this method is adopted. Generally, the pressure loss ΔP of a flow rate control valve is expressed as ΔP=ζV ² /2g. Note that ζ is a coefficient determined by the degree of restriction of the flow rate control valve, V is the velocity of the fluid passing through the flow rate control valve, and g is the acceleration of gravity.
As is clear from this equation, even if the water stop valve 33 is used to throttle the flow rate, if the flow rate control valve 36 is fully closed, the flow rate will be 0.
Therefore, the pressure loss ΔP at the water stop valve 33 becomes 0, and as a result, the original high water pressure is directly applied to the flow control valve 36. Furthermore, even if the flow rate control valve 36 is gradually opened, the flow rate control valve 36
When the degree of opening is small, the speed of water flowing through the water stop valve 33 is slow and the pressure loss is proportional to the square of the flow velocity, so the pressure loss ΔP of the water stop valve 33 is extremely small. This situation is shown in a graph by the solid line in FIG. 4, where A is the relationship between the opening degree of the flow rate regulating valve 36 and the water pressure applied to the flow rate regulating valve 36, and B is the relationship between the opening degree of the flow rate regulating valve 36 and the nozzle 39. This figure shows the relationship between the ejection flow rate from

As is clear from the graph of FIG. 4, in the initial stage of opening of the flow rate control valve 36, the water pressure applied to the flow rate control valve is large, so the flow rate ejected from the nozzle is greater than the degree of opening. In other words, the flow rate control valve 36
The linearity of the flow rate depending on the degree of opening is extremely poor.
This makes adjustment difficult for the user. Since the maximum flow rate at the water stop valve 33 is generally adjusted to be slightly higher than the optimum flow rate, the adjustment range a of the flow control valve 36 for obtaining the optimum flow range G is also very narrow, which is a problem.

Further, when anal cleaning is performed, cleaning droplets are splashed onto the nozzle 39, which is unhygienic.

In addition, since the cleaning flow rate is 0.4 to 0.8/min,
Insensitive water volume of water meter (generally 50/hour≒
0.83/min), which was a problem.

The present invention solves these conventional problems, and improves the characteristics of the jet flow rate from the nozzle using the flow rate control valve, and also enables the discharge of a flow rate that is higher than the insensitive water amount of the water meter, and is effective for cleaning. To provide a sanitary cleaning device that keeps a nozzle clean.

Means for Solving the Problems The technical means of the present invention for solving the above-mentioned problems includes a cleaning main channel connected to a water source and having a water supply valve, a flow rate control valve, and a nozzle fluidly connected in series; An auxiliary waterway is provided in the main washing waterway on the downstream side of the water supply valve, and the nozzle is washed with water discharged from this subwaterway.

Effect The effect of this technical means is as follows.

In other words, even if high water pressure is applied to the device, if the cleaning operation is performed, water will be discharged from the auxiliary channel other than the nozzle, reducing the high water pressure and improving the jet flow characteristics from the nozzle. I can come out.

Further, since the amount of water discharged is the sum of the water jetted from the nozzle and the water discharged from the auxiliary waterway, it can easily exceed the insensitive water amount of the water meter.

Furthermore, during use, the nozzle can be washed with water discharged from the auxiliary waterway, which would normally be wasted, and the water splashed on the nozzle during private part washing can be washed away, thereby keeping the nozzle clean at all times.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings. Figure 2 shows the external appearance of the sanitary cleaning device. This sanitary cleaning device is composed of a toilet seat 1 and a storage body 3 that is fixed to the toilet main body 2 and contains a cleaning device etc. After defecating, the user washes the anus and other areas with warm water sprayed from the nozzle 4.

Figure 1 shows the water circuit of the cleaning device, including a water stop valve 5 connected to the water source, a strainer 6, a solenoid valve 7 serving as a water supply valve, a flow rate control valve 8, a check valve 9, and a hot water tank 10. , a vacuum breaker 11 and a nozzle 4 constitute a main cleaning channel. In addition, a discharge port 14 is provided near the nozzle 4 by branching off from between the solenoid valve 7 and the flow control valve 8 and connecting the throttle 12 and vacuum breaker 13 to the main cleaning water channel. Discharge port 1
An auxiliary water channel is provided through which water discharged from the nozzle 4 cleans the nozzle 4. Note that the restrictor 12 in this auxiliary waterway is unnecessary if the pipe is made thinner.

In this configuration, when the user performs a cleaning operation, the solenoid valve 7 is opened, and water is discharged from the discharge port 14 through the auxiliary waterway to clean the nozzle 4. When the user opens the flow control valve 8, water pressure is also applied to the hot water tank 10, and hot water heated by the heater 15 is jetted out from the nozzle 4 to clean the anus and the like.

With the above configuration, even if the flow rate control valve 8 is throttled, water will be discharged through the auxiliary waterway when a washing operation is performed, resulting in a pressure loss at the water stop valve 5 and the height of the main washing waterway. It becomes possible to reduce water pressure. Therefore, high water pressure is no longer directly applied to the wash water circuit at the initial stage of opening of the flow rate control valve 8.
As a result, the relationship between the degree of opening of the flow control valve 8 and the flow rate ejected from the nozzle 4 can be made almost linear. That is, it becomes as shown by broken lines C and D in FIG. In FIG. 4, the components are the same in both the conventional example and the example, and the main water pressure and the degree of restriction at the water stop valve are also the same.

As is clear from FIG. 4, in this embodiment, the control of the jet flow rate from the nozzle 4 by the flow control valve is close to linear, and the optimum flow rate can be adjusted over a wide range. Easy to adjust flow rate. Further, since the amount of water discharged is the sum of the water jetted from the nozzle 4 and the water discharged from the auxiliary waterway, it can easily exceed the insensitive water amount of the water meter. Moreover, the water discharged from the sub-channel, which would normally be wasted, can be used for cleaning the nozzle 4 itself, which is very rational and sanitary.

In addition, vacuum breaker valves 11 and 13 are installed in both the main cleaning channel and the auxiliary channel, so even if the toilet bowl 2 becomes clogged and overflows, and the water supply is cut off, sewage will not flow back. do not have.

In this embodiment, the auxiliary water channel is provided by branching from between the electromagnetic valve 7 and the flow rate control valve 8 of the main washing channel, but even if it branches from the downstream side of the flow rate control valve 8, the flow rate control valve 8 is At the time of closing, high pressure is applied to the flow rate control valve 8, but when the flow rate control valve 8 opens, the high pressure can be released through the auxiliary waterway, so the jetting characteristics from the nozzle at high water pressure are different from those of the conventional example.
It will be much better. Further, the effect of cleaning the nozzle with water discharged from the auxiliary waterway can also be obtained as in the embodiment.

Effects of the Invention As described above, the present invention has an auxiliary waterway branched downstream from the water supply valve of a cleaning main waterway that is connected to a water source and has a water supply valve, a flow rate control valve, and a nozzle connected in series. Since the nozzle is cleaned by the water discharged from the nozzle, by performing the cleaning operation, water can be discharged through the auxiliary waterway at the same time as the nozzle is spraying water, making it possible to reduce the main high water pressure. As a result, the flow rate ejected from the nozzle can be easily adjusted using the flow rate control valve, and the total flow rate becomes the sum of the cleaning flow rate from the nozzle and the discharge flow rate from the auxiliary channel, so when the water volume falls below the insensitive water volume of the water meter, This method is very sanitary and rational, since the nozzle can be cleaned with water discharged from the auxiliary waterway, which would normally be wasted.

[Brief explanation of drawings]

Fig. 1 is a water circuit diagram of a sanitary washing device showing an embodiment of the present invention, Fig. 2 is a perspective view of the same sanitary washing device, Fig. 3 is a schematic diagram showing a conventional washing water circuit, and Fig. 4 is a graph showing a comparison between the conventional example and the present invention in terms of the relationship between the opening degree of the flow rate control valve, the water pressure applied to the flow rate control valve, and the ejection flow rate from the nozzle. 4... Nozzle, 7... Solenoid valve, 8... Flow control valve, 11, 13... Vacuum breaker valve.

Claims (1)

[Claims] 1. A main cleaning waterway connected to a water source, in which a water supply valve consisting of a solenoid valve, etc., a flow control valve, and a nozzle are fluidically connected in series, and an auxiliary waterway branching from the main washing waterway downstream of the water supply valve. The sanitary washing device is provided with a water channel, and the nozzle is washed with water discharged from the auxiliary water channel.