JP2891341B2 - Cleaning water supply mechanism and sanitary cleaning device using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning water supply mechanism in a water discharge device such as a sanitary cleaning device having a local cleaning function, wherein the cleaning water is foamed and quiet water can be discharged. .

[0002]

2. Description of the Related Art A sanitary washing apparatus having a local washing function is provided by:
In general, a structure in which hot water is sprayed toward a local area by a nozzle device is shown in FIG.

In the figure, a casing 1 of a sanitary washing device is fixed to a toilet body 50, and a toilet seat 6 is attached to the casing 1.
0 and the toilet lid 61 are attached so as to be openable and closable. Inside the casing 1, a tank for heating the washing water, a hot air fan for drying, and a control unit are incorporated, and the operation of each function is performed by an operation unit 1a provided on the upper surface of the casing 1. Then, a nozzle body 51 for local cleaning is provided so as to be able to protrude and retract from the casing 1, and after it is advanced to the cleaning position, the cleaning water is injected from the nozzle hole of the nozzle head at the tip.

FIG. 7 is a schematic view showing a supply system of washing water to the nozzle body 51, using a valve unit 52 having an opening / closing valve and a flow rate adjusting valve function, a ceramic heater or a sheath heater for directly heating and sending out water. A heat exchange 53 and a control unit 54 are provided, and a flow rate adjustment switching unit 55 is incorporated between the heat exchanger 53 and the nozzle body 51.
Then, the nozzle body 51 is driven and the cleaning position is set, the hot water temperature is set by the heat exchanger 53, and the valve unit 5 is set.
2 and the operation of the flow rate adjustment switching unit 55 are performed by the operation unit 1a. In some cases, the flow rate adjustment switching unit 55 is integrated with the valve unit 52.

The nozzle head at the tip of the nozzle body 51 is a hollow body having a plurality of ejection holes formed on the upper surface thereof. The opening diameter of this ejection hole is relatively small in order to prevent the jet water from becoming too weak even when the supply amount of the washing water is small. For this reason, when the amount of the washing water is increased, the momentum of the jetting water hitting the local part becomes considerably strong, and the user often feels pain.

[0006] In order to prevent such pain, it has been proposed to foam water jetted from a nozzle head as described in, for example, JP-A-57-180727. This is to mix air bubbles into the cleaning water so that the soft touch cleaning by the bubbles can be realized even when the power of the cleaning water is strong. As a structure for foaming the washing water, a pressure reducing plate having a small hole in the flow path is incorporated, and an external pressure reducing plate is provided downstream of the pressure reducing plate as widely used in a conventional foam faucet or the like. It is to open the air hole that sucks the air from. With such a structure, the internal pressure is reduced due to the acceleration of the flow of water after passing through the holes of the pressure reducing plate, and external air is sucked from the air holes and mixed into the water. It is foamed.

[0007]

However, the number of air holes for air suction to be opened in the nozzle head cannot be unnecessarily increased due to the occurrence of leakage of washing water and the like. Further, when sucking air for foam, it is necessary to provide an air hole at an appropriate position with respect to the streamline of the washing water flowing in the nozzle head.

As described above, in the configuration in which the cleaning water is foamed using the air holes opened in the nozzle head, sufficient air suction cannot be performed unless the number and the position of the air holes are appropriate. For this reason, the amount of air suction may be insufficient, and particularly when the flow rate of the washing water is small, the amount of decrease in the internal pressure of the internal flow path is small, and it is not possible to realize foaming of the washing water.

[0009] The same is true not only in the field of sanitary washing devices, but also in faucets and other water spouting devices that use washing water as foam, and the problem of poor foaming cannot be ignored in any case.

[0010] The problem to be solved in the present invention is to make the washing water sufficiently foamable so that the water can be spouted, so that the optimum foamed water according to the application can be easily obtained.

[0011]

A cleaning water supply mechanism according to the present invention is a water discharging apparatus including a water discharging section for discharging cleaning water, and a piping system for supplying cleaning water to the water discharging section. the internal passage or ejection water portion of the system, incorporation of bubbles in the wash water
It is characterized in that a bubble mixing means for making the bubbles fine at the time of the generation is provided. Here, the bubble mixing means has many fine openings
It is preferable to arrange at the boundary between outside air and washing water.
No. Therefore, the bubble mixing means can be configured as a porous suction head.
Preferably. Also, force the air bubble mixing means
Provide a means for feeding air, or
The foaming rate regardless of the flow rate of the washing water
Even if there is a means to adjust the air flow rate so that it is equal
Good. Also, the means for adjusting the flow rate of the air includes an ejector.
You can use more air than you use only the effect
No. In addition, a heating means is provided for instantaneously heating the washing water directly.
The nozzle body in synchronism with
Driving means for driving to the washing position and the storage position may be provided.
No.

[0012]

[Action] The air in the washing water flows into the internal flow path or the water discharge section of the piping system.
Easy to install by providing bubble mixing means for making bubbles fine
A large amount of air can be mixed into the washing water. Also,
The air bubble mixing means has many fine openings,
If a porous body is placed at the boundary between
There is no need for a structure that sucks in air. Also, in order to suck air into the internal flow path by the suction head provided in the piping system, for example, the flow rate of the washing water passing through the inside is increased to reduce the internal pressure, and thereby the air is sucked from the porous suction head. It can be drawn into the channel. In addition, a compressor or the like is attached to the suction head, whereby air can be forcibly blown into the internal flow path. If the suction head is provided in the pipe as described above, it becomes possible to increase the amount of air suction by appropriately setting the porous surface area. In either case, the porosity of the suction head
Air is sucked in through the
It can be sufficiently foamed. Also, the air flow rate
If the air volume is adjusted by the adjusting means,
Control the operation of the compressor etc. in proportion to the amount
Make the degree of foam almost uniform regardless of the flow rate of water, or
Use more air than using only the ejector effect
be able to. In addition, the cleaning water is heated
If there is a heating means to supply to the water section, the washing water will be warm water
Cleaning the nozzle body in synchronization with the supply and stop of the cleaning water
Unnecessary if drive means for driving to the position and the storage position are provided
In such a case, the nozzle body can be stored.

[0013]

FIG. 1 is a perspective view schematically showing the internal structure of a sanitary washing apparatus according to the present invention.

In the figure, the toilet body 50 is similar to the prior art.
A supply system of washing water to the nozzle device 2 is provided in a casing 1 of the sanitary washing device fixed to the nozzle. In this supply system, a water supply pipe 3 that is directly connected to a building pipe outside the casing 1, a pump 4 that feeds water to the nozzle device 2 side, and a heat exchanger 5 that heats the water are incorporated.

The nozzle device 2 is a cylinder 2 fixed inside the casing 1 and connected to a supply pipe 5a from the heat exchanger 5.
a, and a nozzle body 2b incorporated in the cylinder 2a so as to be movable in the axial direction. A nozzle head 2c is provided at the tip of the nozzle body 2b. Then, as employed in the conventional sanitary washing device, the nozzle body 2
b has a structure in which the cleaning water is advanced by the pressure of the cleaning water flowing into the cylinder 2a, and when reaching the cleaning position, the cleaning water can be jetted from the nozzle head 2c. Further, as the supply of the washing water is stopped and the water pressure is attenuated, the nozzle body 2b returns to the original position in the cylinder 2a by a spring (not shown) for urging the nozzle body 2b to the storage position, The injection of the washing water is also stopped.

The nozzle body 2b may be driven by an actuator such as a conventionally known motor instead of using the water pressure of the washing water. And, in the nozzle head 2c and the nozzle body 2b,
It is not necessary to provide any air holes for foaming the cleaning water or a throttle for the flow path for increasing the internal flow.

The pump 4 feeds water to the heat exchanger 5 by adjusting the pressure of water from a water supply pipe 3 connected to a main drain of a building or the like to an appropriate pressure. Further, the heat exchanger 5 has a built-in ceramic or sheath type heater 6 therein, and instantaneously directly heats the supply water to supply the water to the nozzle device 2. Then, the cleaning water heated from the heat exchanger 5 is supplied to the nozzle device 2 and stopped by turning on and off the operation of the pump 4, and at the same time, the nozzle body 2b advances to the cleaning position and returns to the original storage position after stopping water. Perform the operation.

A connecting pipe 7 is provided between the pump 4 and the heat exchanger 5.
And air is sucked from the outside into the flow path of the connection pipe 7 to foam the water supply. Then, a suction head 8 is incorporated in the middle of the connection pipe 7 for foaming.
The suction head 8 does not leak water to the outside at about the pressure of water passing through the inside, and can pass air from outside when the pressure of the internal flow path is lower than the atmospheric pressure.
It is formed in a pipe shape by using a porous body having a large number of fine openings as a material. As the porous body, for example, ceramic or the like can be used. From outside to washing water
The introduced air passes through the fine openings of the suction head 8.
Small and independent depending on its fine aperture to have
Fine bubbles are formed in the washing water.

FIG. 2 is a schematic diagram showing a flow system of the washing water up to the nozzle device 2, and a suction head 8 is incorporated in a connecting pipe 7 between the pump 4 and the heat exchanger 5. The suction of the air into the internal flow path by the suction head 8 is performed by the connection pipe 7.
The internal pressure should be reduced based on the increase of the flow rate of the water passing through the inside, or the air should be forced from the outside.

FIG. 3 is a sectional view of a main part showing the suction head 8 and its vicinity in the case of utilizing the ejector effect due to a decrease in internal pressure.

The suction head 8 has a cylindrical shape made of a ceramic material. A housing 9 is integrally formed on the outside of the suction head 8 to form a chamber 9a having an annular vertical section around the suction head 8. The housing 9 has a sleeve 9b projecting outward so as to be inclined to suck air in the flow direction of water. In the illustrated example, the throat is provided so that the flow area of the suction head 8 is smaller than that of the left and right connection pipes 7 in order to increase the flow velocity of the water passing through the suction head 8 and lower the internal pressure. ing.

In the illustrated example, the path of the washing water is in the order of the pump 4, the suction head 8, and the heat exchanger 5.
Instead of using the water discharge pressure of the pump 4, a method may be adopted in which the cleaning water is directly fed by the water supply pressure of the water supply pipe of the building. In this case, instead of the pump 4, the operation unit 1
A valve unit of an electromagnetic valve type operable by a is provided, and an on-off valve, a flow control valve and the like are incorporated in this valve unit. Even with such a water supply direct connection type, the path from the valve unit to the nozzle device 2 is the same as that of the illustrated example, and the cleaning water is bubbled by the suction head 8 at a stage before water is discharged as described later. Can be

In the above configuration, when the cleaning switch (not shown) of the operation unit 1a is operated, the pump 4 (a valve unit provided in place of the pump 4 in the case of a direct water supply type) is operated.
Is operated, and water is supplied from the connection pipe 7 through the heat exchanger 5 into the cylinder 2a of the nozzle device 2. Then, the nozzle body 2b advances to the cleaning position by the pressure of the cleaning water that enters the cylinder 2a, and then the nozzle head 2
Cleaning water is injected from c.

Since the suction head 8 incorporated in the connecting pipe 7 is a throat with respect to the flow of the washing water, the flow rate of the washing water flowing through this portion increases, and the internal pressure in the flow path decreases. For this reason, air is sucked in from the porous suction head 8 and passed through a fine opening to be miniaturized.
The air is mixed with the washing water passing therethrough.
Therefore, before entering the heat exchanger 5, the cleaning water becomes a gas-liquid two-phase flow containing air bubbles, is heated in the heat exchanger 5 in this state, and is jetted as foam from the nozzle head 2c.

As described above, when the washing water is converted into a gas-liquid two-phase flow before entering the heat exchanger 5, if the heater 6 of the heat exchanger 5 by the boiling heat transfer is made of, for example, ceramic, the flow becomes foamy. Turbulence as containing For this reason, heat transfer is promoted and the time until boiling of the cleaning water is shortened as compared with the case where ordinary cleaning water containing no bubbles is poured as it is. Therefore, not only is the heat exchange efficiency improved, but also the time for heating the cleaning water to a predetermined temperature is shortened, and the time width during which the boiling sound is generated during the heating is also reduced.

The heated washing water that has exited the heat exchanger 5 is supplied to the nozzle device 2 as a gas-liquid two-phase flow, and is jetted as it is from the nozzle head 2c as washing water containing foam. For this reason, soft touch cleaning can be performed more comfortably than cleaning water containing no foam. Then, the air for foaming is sucked from the suction head 8, so that if the suction head 8 is appropriately sized, a sufficient amount of air can be secured. For this reason, compared with the case where the foaming mechanism is simply provided in the nozzle head 2c, the amount of air can be remarkably increased, and soft cleaning with a high foaming degree can be performed. That is, since the suction head 8 is the flow path of the cleaning water, a structure for sucking air separately from the flow path is not required. The size of the suction head 8 can be freely changed, and it is easy to obtain a sufficient amount of air with respect to the flow rate of the washing water.

FIGS. 4 and 5 show another example.
This is to forcibly blow air into the suction head 8.

As shown in FIG. 5, a cylindrical suction head 8 made of ceramic is incorporated with the inside diameter thereof equal to that of the connection pipe 7. The thickness of the suction head 8 is larger than that of the above-described example, and the outside thereof is covered with the housing 10 to form the air passage 10a inside. A compressor 11 is connected to the housing 10, and by operating the compressor 11, external air is supplied to the air passage 10.
blow into a. In the case of the water supply direct connection type as described above, a valve unit may be incorporated instead of the pump 4.

In this configuration, since air is forcibly sent from the suction head 8 to the internal flow path by the compressor 11, even if the flow rate of the washing water is low and the internal pressure of the internal flow path does not decrease, the air can be reliably sent. . Then, by adjusting the flow rate of the air from the compressor 11 so as to be proportional to the flow rate of the washing water, the void ratio can be set substantially uniformly. For this reason, it can be supplied as gas-liquid two-phase flow cleaning water having substantially the same foaminess regardless of the flow rate of the cleaning water. Therefore, if only the ejector effect is used, if the flow rate is small and the internal flow rate does not increase, the amount of suction air will also decrease and the foaminess will not increase. However, such an obstacle is solved by incorporating the compressor 11. .

Further, since the air can be supplied by the compressor 11 without increasing the flow rate of the washing water passing through the suction head 8, the suction head 8 need only be a simple cylindrical shape as shown in the figure. Therefore, there is no need to provide a throat or the like, and the processing of the suction head 8 and the incorporation into the connection pipe 7 are simplified. In addition, since the thickness can be increased, the strength of the ceramic material suction head 8 can be sufficiently maintained, which is preferable in terms of durability.

Further, as in the above embodiment, the washing water is gas-liquid two-phase flow before entering the heat exchanger 5 of the boiling heat transfer type. Are turbulent and heat transfer is promoted. For this reason, the heat efficiency is improved, and the time until boiling is shortened, so that the boiling noise can be reduced.

Although the embodiment has been described with respect to the sanitary washing device for local washing, the washing water supply mechanism of the present invention can also be applied to a vanity table, a washing machine and other equipment using washing water. Of course.

[0033]

In the present invention, according to the present invention, air bubbles in the washing water it fine
Since the fine air is mixed into the washing water by the air bubble mixing means and foamed, a sufficient amount of air can be obtained as compared with the conventional case where the foaming mechanism is provided in the nozzle head, and small, Fine bubbles can provide high-foaming washing water and at the same time provide comfortable washing .

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a main part when a cleaning water supply mechanism of the present invention is applied to a sanitary cleaning device.

FIG. 2 is a schematic diagram of a supply system of cleaning water up to a nozzle device as a water discharging device.

FIG. 3 is a sectional view of a main part showing an example of a structure for sucking air into a cleaning water flow path by an ejector effect.

FIG. 4 is a schematic diagram showing a cleaning water supply system for forcing air into a cleaning water flow path by a compressor.

FIG. 5 is a schematic sectional view of a suction head portion in the case of supplying air using a compressor in the case of FIG. 4;

FIG. 6 is a perspective view of a conventional example in which a sanitary washing device is installed on a toilet.

FIG. 7 is a schematic diagram showing a supply system up to a nozzle device of cleaning water in a conventional example.

[Description of Signs] 1 Casing 2 Nozzle device (water discharging device) 3 Water supply pipe 4 Pump 5 Heat exchanger 6 Heater 7 Connection pipe 8 Suction head 9 Housing 10 Housing 11 Compressor

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Shingo Sato 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Totoki Kiki Co., Ltd. (56) References JP-A-1-318623 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) E03D 9/00-9/16

Claims (11)

(57) [Claims] 1. A water spouting device comprising a water spouting section for spouting washing water, and a piping system for supplying washing water to the spouting section,
The internal passage or ejection water portion of the piping system, the wash water
A cleaning water supply mechanism to a water discharge device , wherein a bubble mixing means for making bubbles fine when mixing bubbles is provided. 2. The air bubble mixing means has a large number of fine openings.
The washing water supply mechanism according to claim 1, wherein 3. The method according to claim 1 , wherein the air bubble mixing means includes a boundary between the outside air and the washing water.
The cleaning water supply mechanism according to claim 2, wherein the cleaning water supply mechanism is disposed on a surface . 4. The air bubble mixing means includes a porous member capable of sucking outside air.
4. The suction head according to claim 3, wherein the suction head has a high quality.
Cleaning water supply mechanism. 5. Forcibly sending outside air to the bubble mixing means.
5. The method according to claim 1, further comprising means.
The washing water supply mechanism according to any one of the above. 6. The air flow is proportional to the flow rate of the washing water.
6. A device according to claim 5, further comprising means for adjusting the amount.
Wash water supply mechanism. 7. The degree of foaming is substantially equal regardless of the flow rate of washing water.
Adjust the air flow rate to supply a new gas-liquid two-phase flow
6. The washing water according to claim 5, further comprising:
Supply mechanism. 8. The means for adjusting the flow rate of air is an ejector.
Supply more air than using only the air effect
The cleaning water according to claim 6 or 7, wherein
Supply mechanism. 9. A heating means for instantaneously directly heating the washing water.
9. The method according to claim 1, further comprising:
The washing water supply mechanism described in any of the above. 10. A nozzle in synchronism with supply and stoppage of washing water.
Drive means for driving the main unit to the washing position and storage position.
10. The method according to claim 1, wherein
A washing water supply mechanism according to any one of the above. Any of 11. claims 1 to 10
Hygiene characterized by comprising a washing water supply mechanism according to (1).
Cleaning equipment.