JPS603184Y2 - sanitary cleaning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sanitary cleaning device, and more particularly to an improvement in a water supply heating device for supplying cleansing water at a comfortable temperature to a spout section for private part cleaning provided in the sanitary cleaning device.

Conventionally, a water supply heating device for a sanitary cleaning device is equipped with a sheathed heater and a thermoswitch that controls energization to the heater in a hot water storage tank that stores hot water, and a hot water outlet pipe whose opening end opens into the earthen wall of the hot water storage tank. Furthermore, the water inlet pipes are installed so that they pass through the upper wall of the hot water storage tank and the opening end into the tank is located near the bottom wall of the hot water storage tank.

By mutually arranging the water inlet pipe and the hot water outlet pipe, water flows in so that it gushes out from near the bottom wall of the hot water storage tank, and the inflow water pushes upward the warm water that has been automatically adjusted to an appropriate temperature and heated. The inflow water itself is also heated by the heater, and the hot water is discharged from the outlet pipe and supplied to the spouting section.

However, in conventional types, the inner diameter of the inlet pipe and hot water outlet pipe are generally small, so the water passing area is narrow, and the water passing area of both pipes is approximately the same, so hot water flows from the inlet pipe into the storage tank. The flow rate of the water is so high that it collides with the bottom wall of the hot water storage tank located directly below the open ends of both pipes in a jet state, changes direction upward, and mixes with the preheated hot water.

Then, this mixed hot water is gradually pushed out by the inflowing water and discharged from the hot water outlet pipe, but because the amount of heating by the heater is not sufficient for the discharge speed, the temperature is lower than the set comfort temperature. The drawback is that water is squirted into private parts, making it difficult to clean comfortably.

In particular, if air bubbles are present in the flowing water supplied from the inlet pipe, the air bubbles will enter the hot water tank through the open end of the inlet pipe and float up inside the tank, causing the above-mentioned low-temperature In addition to the inflowing water being mixed in, the inside of the tank is agitated by the floating of air bubbles, resulting in a significant drop in temperature, resulting in a further drop in the temperature of the flushing water, which poses a practical problem.

This invention was created to eliminate the above-mentioned drawbacks of conventional water supply heating devices, and its purpose is to mix low-temperature water supplied into a hot water storage tank with hot water that has been automatically adjusted to an appropriate temperature in advance. The objective is to prevent this from happening and to enable comfortable washing without the washing water temperature dropping below the set temperature.

The basic structure of the present invention is that the opening end of the inlet channel that introduces water into the hot water storage tank, that is, the water inlet part, is located near the bottom wall of the hot water storage tank, and the opening end, that is, the opening end of the hot water outlet that connects to the spouting part, is located near the bottom wall of the hot water storage tank. The hot water outlet is formed on the top wall of the hot water storage tank, the water flow area of the water inlet is larger than the minimum water area of the hot water outlet, and a small hole is formed in the inlet channel at a position close to the top wall of the hot water storage tank. The holes reduce the flow rate of water flowing into the hot water storage tank, preventing water from stirring inside the tank, and also quickly transports air bubbles mixed into the inflow water along the lower surface of the top wall of the hot water storage tank through the small holes. By discharging the hot water from the outlet path, the water in the hot water storage tank is also prevented from being stirred, thereby preventing the temperature of the heated hot water in the hot water storage tank from decreasing.

Hereinafter, a specific explanation will be given based on the embodiment shown in the attached drawings. Fig. 1 shows a toilet bowl 1, and 2 in the figure shows a water supply heating device installed in the upper rear part of the toilet bowl so as to straddle the toilet bowl 1. The main body, 3 is a heated toilet seat, and 4 is a toilet lid, and the heated toilet seat 3 is the toilet lid 4.
Both are pivotally mounted to the main body 2 of the feed water heating device so as to be vertically movable.

Further, 5 is a water supply tank for flushing water for the toilet bowl 1.

FIG. 2 shows a front view of the main body 2 of the feed water heating device.
As shown in the figure, the main body case 2a has a "shaped" shape when viewed from the front side of the toilet bowl 1, and has a spout section 2e formed from a telescopic nozzle approximately in the center of the main body case.

In addition, in this embodiment, a hot air drying device (not shown) is provided so that the private area can be dried with warm air after cleaning the private area.

) is also included in the main body case 2a, and the main control circuit section of the drying device, heated toilet seat 3, and automatic hot water temperature control device C described later are similarly built in the main body case 2a.

In FIG. 1, reference numeral 2b is an outlet for the telescopic nozzle provided in the main body case 2a, and 2c is a hot air outlet provided adjacent to the outlet for blowing out hot air from the hot air drying device.

The main body 2 of the water heating device is fixed to the rear part of the toilet bowl 1 by a mounting plate 2d, and a connecting fitting (not shown) is attached to the lower back surface of the main body case 2a.

) connects the water supply source and the cleaning water flow path in the device, and a water pipe (not shown) connects the connection fittings and the water supply source.

), it is advisable to install necessary equipment such as a stop valve, strainer, and check valve in the middle.

Also, a hot water storage tank 6 is built into the main body 2 of the water heating device 2, and has a water inlet pipe that communicates with the above-mentioned connecting fittings, and has a heating section built in. An exploded perspective view of the hot water storage tank is shown in FIG. In the figure, 7 is a lid that constitutes the earthen wall of the hot water storage tank, 8 is a gasket that is interposed between the hot water tank 6 and the lid 7, and 9 is each formed in a half-shape, and the lid 7 is attached by screws 10. This is a presser member that presses and fixes to the hot water storage tank 6.

Further, as shown in FIG. 4, the lid body 7 has an inlet pipe 11 forming an inlet channel and an outlet pipe 12 forming an outlet channel.
First, the inlet pipe 11 is connected to the water supply side and is fixed to the upper wall of the cover 7, and the first water pipe 11a is fixed to the lower surface of the cover 7. A second water inlet pipe fl having an open end near the bottom wall 6b of the hot water storage tank 6
b, and the open end of the second water pipe 11b forms the water inlet portion 11d.

As shown in FIG. 5, the water flow area A2 of the second water pipe 11b is larger than the water flow area A□ of the first water inlet pipe 11a, and water flows into the hot water storage tank 6 from the water inlet pipe 11. The flow rate of the water supply can be reduced by expanding the flow path of the second water inlet pipe flb.

Furthermore, a small hole lie for blowing out air bubbles contained in the water supply is bored at the upper end of the second water supply pipe 11b, that is, at a position close to the lower surface of the lid 7, and the direction of the hole is It is provided so as to face the pipe 12 side.

Further, as clearly shown in FIG. 5, the tap opening 12c of the tap pipe 12 is formed such that the opening end thereof does not protrude downward from the lower surface of the lid 7, and the tap opening 12c is formed with a radius in the tap tap direction. It has a guide part 12a whose diameter decreases in the direction, and is connected to the hot water main pipe 12b which is connected in communication with the upper end of the guide part and communicates with the spout part 2e. The minimum water flow area to the water area, that is, the outlet path, is the second water inlet pipe 1
It is smaller than the water flow area A2 of 1b.

The water inlet pipe 11 and the hot water outlet pipe 12 are installed at a required interval, and their mutual arrangement and the opening end of the water inlet pipe 11, that is, the water inlet portion 11d, and the opening end of the hot water outlet pipe 12, that is, the hot water outlet portion 12c are relative to each other. Depending on the position, the water inlet part 1 of the water pipe 11
The water flowing in from 1d flows out from near the bottom wall 6b of the hot water storage tank 6, and the hot water heated by the heating section 14 consisting of a sheathed heater, which will be described later, is pushed upward and flows out from the hot water outlet section 12c. Spout part 2 via pipe 12
In addition, as the inflow water itself moves upward, it is heated by the heating section and becomes a hot water state.

Furthermore, 13 is a temperature sensor that directly detects the temperature of hot water in the hot water storage tank 6, and in this embodiment, a thermistor with negative characteristics is built into the tip of the thin-walled copper tube as a detection element with a lead wire connected. In addition, a positive temperature thermistor, a thermoelectric material, a platinum thermometer, a transistor using a PN junction, a diode using a PN junction, etc. may be used as the temperature sensing element.

The temperature sensor 13 is disposed at its tip slightly above the middle part of the hot water storage tank 6, and is configured to accurately detect the temperature of the hot water being discharged from the hot water tap 12.

Furthermore, 14 is a sheathed heater that heats the water in the hot water storage tank 6 and constitutes a heating part, and is formed so that a portion located near the bottom wall 6b of the hot water storage tank 6 generates heat, and 15 is installed on the lid 7 of the hot water storage tank 6. This is a float switch that serves as a dry-firing prevention part to prevent dry-firing.The switch has a guide tube 16 with a reed switch installed at the bottom inside and a magnet that floats and sinks depending on the water level, guided by the guide tube. It is composed of a float 17.

Further, 6a is a drain plug attached to the bottom wall 6b of the hot water storage tank 6.

Next, the outline of the flow of water supplied from the water supply source 50 will be described with reference to the flowchart shown in FIG.
When the on-off valve 51 is opened, which is operated by the on-off handle 2g provided at f, the water flows into the main body of the apparatus.

Thereafter, as shown in the figure, the water reaches the distribution section 52 and is divided into two directions by the distribution section 52.

That is, one type of water flows from the distribution section 52 through the flow rate adjustment valve 53 into the hot water storage tank 6, is heated by the sheathed heater 14, becomes hot water, is gradually discharged from the hot water tap 12, passes through the intake valve 54, the vacuum breaker valve 55, and exits from the telescopic nozzle. The water is ejected to the ejection part 2e to wash the private parts, and the water going to the other side is discharged from the outlet 56 through the vacuum breaker valve 55'.
This discharged water is configured to branch into one that cleans the tip of the nozzle.

When draining the water in the hot water storage tank 6, it can be easily done by opening the drain valve 6a as appropriate.

Washing water is spouted out during use through the above water path; Part 2e
Water is spouted locally from the water supply source 50 to the hot water tank 6.
The water temperature in the hot water tank 6 decreases due to the hot water flowing into the hot water tank 6, and the hot water heated in the hot water tank being pushed out and flowing out of the tank, or due to heat dissipation from the hot water tank 6.

At this time, the automatic temperature control device C energizes and controls the sheathed heater 14 in order to keep the temperature of the cleaning water jetted constant.The control will be described below based on the control circuit shown in FIG. explain.

First, when the temperature of the hot water in the hot water tank 6 decreases due to water flowing into the hot water storage tank 6 during use or due to long-term storage, the resistance Rth of the negative characteristic thermistor that constitutes the temperature sensor 13 increases, and therefore The potential at point A, which is divided by the middle thermistor Rth and variable resistor Rc, is lower than the potential at point 0, which is divided by resistor R□ and resistor R2, and IC1, which constitutes the voltage comparator, operates, and the potential at point A is becomes high (high level).

When the output of ICl becomes high level, the transistor Tr
When current flows into the base of the transistor, the transistor becomes conductive, and a light emitting element such as a light emitting diode connected to its collector emits light.The light receiving element Cd such as a CdS cell receives the light beam, and the light receiving element Cd The internal resistance of decreases, triac T is triggered and becomes conductive,
Current flows through the sheathed heater 14, that is, the heating element Rh, and the hot water in the tank is heated.

When the temperature of the hot water increases, the resistance value of the thermistor Rth becomes smaller, becomes higher than the potential of the potential force addition point at the point A of ICl, and the potential at the point F becomes low (low level).

When ICI becomes a low level state, the transistor Tr is cut off, the light emitting element ceases to emit light, the resistance of the light receiving element Cd increases, and the triac T loses its trigger and becomes cut off, causing no electricity to the heating element Rh. The power supply is stopped and heating of the hot water is stopped.

When adjusting the temperature of the hot water, the temperature adjusting variable resistor Rc is adjusted.

That is, if the resistance of the variable resistor Rc constituting the temperature setting section is made smaller, the potential of point A will not become higher than point A unless the resistance Rth of the thermistor becomes smaller.

In other words, the heating element Rh is energized until the temperature of the hot water becomes higher, the resistance Rth of the thermistor becomes smaller, and the potential at point A becomes higher than the potential at point A.

That is, the temperature is set to high temperature.

On the contrary, if the resistance of the variable resistor Re is increased, the temperature is set to a lower temperature.

Therefore, the temperature of the hot water can be set steplessly to a desired temperature.

As mentioned above, FS is a float switch 15 that is installed on the lid 7 of the hot water tank 6 to prevent dry heating, and when the hot water tank 6 is full of water, the float 17 is in the raised position and the reed switch contact is closed. When the reed switch is opened and the water level falls, the float 17 is lowered and the reed switch contact is closed, and the reed switch is provided in parallel with the thermistor Rth as shown in the circuit diagram.

Therefore, when the hot water storage tank 6 is full of water, the float switch FS is open, so the ICI controls the energization to the heating element Rh in accordance with the change in resistance of the thermistor Rth due to the change in temperature of the hot water.

If the water level in the hot water tank 6 drops due to some reason, such as a water leak in the hot water tank 6, the float 17 will lower as the water level falls and the reed switch contact will close, thereby closing the float switch FS. .

In this state, the potential at point A of ICl becomes higher than the potential at point ICl, CI becomes a low level state, and as mentioned above, transistor Tr is cut off, the light emitting element ceases to emit light, and light receiving element Cd The resistance of the triac T increases, and the triac T is no longer triggered, and the current supply to the heating element Rh is stopped.

Note that this float switch FS may be provided in series with the heating element Rh.

In this case, the float switch FS is configured to open when the water level falls and close when the water is full.

In the figure, TR is a transformer, SW is a main switch, and TA is a bimetal switch for overheat prevention.

With the control circuit of the automatic temperature control device C as described above, the temperature of the washing water ejected from the hot water storage tank 6 through the hot water outlet pipe 12 and from the spouting part 2e is always maintained at a preset constant temperature, making it possible to perform comfortable washing. However, in the present invention, a drop in hot water temperature can be prevented by preventing agitation of the hot water storage tank 6 by inflowing water and agitation by air bubbles in the inflowing water, and hereinafter the same configuration will be used. The action and effect of this will be described with reference to FIGS. 4 and 5.

First, the water that is about to flow into the hot water storage tank 6 from the water supply source via the water inlet pipe 11 flows from the first water pipe 11a to the second water inlet pipe 11.
When reaching b, each water flow area A□v A2 has the relationship Al < A2 as described above, so the second water inlet pipe 1
The flow rate of the supplied water in 1b is reduced by a certain amount and enters the hot water storage tank 6.

Furthermore, as mentioned above, the water flow area A3 of the hot water main pipe 12b of the hot water tap 12 is smaller than the water flow area A2 of the second water inlet pipe 11b, so the amount of hot water discharged from the hot water tap 12 per unit time is assumed to be constant. Then, as is clear from the fluid continuity equation, the flow rate of the feed water flowing from the opening of the second water pipe 11b is further reduced.

Therefore, since the flow velocity of the supplied water is reduced, the supplied water does not reach the bottom wall 6b of the hot water storage tank 6 located immediately below the opening end of the water inlet pipe 11, that is, the water inlet lid, and flows out from the opening end at a slow speed. Therefore, the hot water heated in the hot water storage tank 6 is not mixed into the forced convection state.

Therefore, without lowering the temperature of the hot water, the hot water can be gradually pushed up and discharged from the outlet pipe 12 at the set temperature, and the inflow water is also gradually heated by the sheathed heater 14 as the water level rises. The hot water can be heated to the set temperature, and this process is continued for the duration of the jetting of the cleaning water, making it possible to spray the cleaning water at the set temperature at all times.

The above is a method for preventing a drop in the temperature of hot water in the hot water tank 6 regarding the flow of water in the hot water storage tank 6. By providing the small holes 11c, the air in the water supply becomes bubbles and can be quickly discharged from the hot water outlet pipe 12 without stirring the hot water in the hot water storage tank 6, hereinafter referred to as the small holes 11.
The effect of c will be described.

When the supply water flows down through the inlet pipe 11, air contained in bubbles in the supply water enters the small hole 1 of the second water pipe 11b.
It is released into the hot water in the hot water storage tank 6 from 1c.

Since the flow velocity in the water inlet pipe 11 is very slow, the air is not released from the opening end of the water inlet pipe 11 along with the supply water because the air is not mixed in with the supply water and is released from the small hole 11c smoothly. It is done.

As mentioned above, since the small hole 11c is provided close to the lid 7, which is the upper wall of the hot water storage tank 6, the released air becomes bubbles and flows along the bottom surface of the lid 7. The bubbles move sequentially in the direction of the pipe 12 along with the flow of the hot water in the upper tank, so that the hot water in the hot water storage tank 6 is not agitated.

The air bubbles that have reached the opening end of the hot water tap 12 are smoothly guided by the guide portion 12a formed inside the hot water tap main pipe 1.
2b, the bubbles can be sequentially removed from the hot water storage tank 6.

Therefore, the hot water heated in the hot water storage tank 6 and the inflowing water are not unnecessarily stirred, so that mixing of the hot water and the supply water can be prevented, and the temperature of the cleaning water flowing from the hot water tap 11 to the spouting part 2e is reduced. The temperature does not drop below the set temperature, allowing comfortable cleaning at all times.

The small hole for air bubble release drilled in the second water inlet pipe 11b is not limited to being provided in one place as in this embodiment, but has an opening area that is large enough to prevent the supply water from directly flowing into the upper part of the hot water tank 6. If so, the required number may be provided, and the shape thereof may be arbitrary, such as a circular or rectangular cutout.

Note that the present invention can be modified in various ways.

For example, in the above-described embodiment, the main body of the water supply heating device including the spouting portion is attached to the toilet bowl, but the spouting portion and the main body of the water heating device may be separated and only the spouting portion may be attached to the toilet bowl.

In this case, the main body of the water supply heating device may be installed on the floor of the toilet.

Also, turn on the triac to supply electricity to the heating section.

Although the control is performed using OFF control, it may be controlled using phase control, time proportional control, or the like.

An SCR or the like can also be used instead of a triac.

Of course, a capillary thermoswitch may also be used.

As described above, the sanitary cleaning device according to the present invention can achieve the following effects.

(1) The flow rate of the supply water flowing into the hot water storage tank is reduced, so there is no need to stir the hot water, which prevents a drop in the wash water temperature, and allows for comfortable washing as wash water at the set temperature can always be supplied to the spouting part. can be done.

(2) In addition to the above, bubbles in the supplied water do not unnecessarily stir the hot water in the hot water storage tank, and in combination with the effect of (1), the temperature of the washing water does not decrease.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view of the sanitary cleaning device according to the present invention;
The figure is a partially cutaway front view of the main body of the water heating system, Figure 3 is an exploded perspective view of the hot water tank, Figure 4 is a side view showing the internal structure of the hot water tank, and Figure 5 shows details of the main parts of the hot water tank. Side sectional view shown, No. 6
The figure is a flowchart showing the flow of water in the sanitary washing device, and FIG. 7 is a diagram showing the control circuit of the temperature control device. 1...Toilet bowl, 2...Water heating device main body, 2e...Spout part, 6...Hot water storage tank, 6
b...Bottom wall, 7...Top wall, 11...
...Inlet channel, llc...small hole, lld...
...Water inlet, 12...Hot water outlet, 12c...
・・・・Tailing port part, 14 ・・・Heating part, C...
...Temperature control device.

Claims (1)

[Scope of utility model registration request] It includes a toilet bowl equipped with a spouting part for washing private parts, and a main body of a water supply heating device that supplies hot water to the spouting part, and the main body of the water supply heating device has a hot water tank and a water tank provided in the hot water storage tank to supply water from the hot water tank. A heating section that heats, a temperature control device that automatically adjusts the water temperature in the hot water tank to a constant temperature by controlling the energization to this heating section, and one end connected to the water supply source and the other end connected to the earthen wall of the hot water storage tank. an inlet channel that extends to near the bottom wall of the hot water storage tank and has a water inlet that opens and communicates with the inside of the hot water storage tank; and a hot water outlet passage in which a hot water outlet part communicating with the inside of the tank is formed, and the water passage area of the water inlet part is made larger than the minimum water passage area of the hot water outlet passage, and the water inlet passage is formed on the lower surface of the upper wall of the hot water storage tank. A sanitary cleaning device characterized in that small holes 11c are bored at adjacent positions.