JP2641764B2 - Flow control device for sanitary washing device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow control device of a sanitary washing device for washing a local part of a human body.

[Conventional technology]

2. Description of the Related Art Conventionally, many sanitary washing devices use water pressure to pump washed water from a nozzle to wash a local part of a human body. However, the water pressure generally varies from 0.5 to 8 kg f / cm ² depending on the area or the form of the house.
Stable ejection cannot be performed. For this reason, the following flow control devices have been developed in order to always supply the washing water from the nozzles with a stable ejection pressure so as not to give a user discomfort. It is a pressure reducing valve system and a constant flow valve system.

The pressure reducing valve system is disclosed, for example, in Japanese Patent Application Laid-Open No. 61-229036, and has the following configuration.

As shown in FIG. 5, this flow control device is provided with a water supply port 21.
, A solenoid valve portion S provided on the downstream side through a communication channel L2, and a throttle valve C provided further on the downstream side via a communication channel L3. The secondary port of the throttle valve C is connected to the local cleaning nozzle 8. Further, a safety valve D and a check valve E are provided between the communication flow path L3 and the waste water port 33.
Are provided.

The operation will be described. The water pressure connected to the water supply port 21 is generally 0.5 to 8 kgf / cm ² , but is first adjusted to a predetermined set pressure by the pressure reducing valve R, and the water passage is opened and closed by the electromagnetic valve S. Further, the opening of the throttle valve C is changed by rotating and adjusting the flow rate adjusting knob 23, so that the amount of water supplied to the local cleaning nozzle 8 can be adjusted. When the pressure reducing valve section R is malfunctioning, the safety valve D releases the pressure to the waste water port 33 so that high water pressure is not applied to the local washing nozzle 8 side.

The constant flow valve system is disclosed in, for example, Japanese Utility Model Laid-Open Publication No. Sho 61-112080, and has the following water channel configuration. As shown in FIG. 6, the water pipe 51 is connected to a solenoid valve 54 in the cleaning device main body 53 via a branch plug 52, and further connected to a water governor 58. The downstream side of the water governor 58 is branched into a washing water circuit A that reaches a washing nozzle 57 via a flow rate controller 55 and a hot water tank 56, and a waste water circuit B.

[Problems to be solved by the invention]

However, the flow control device in the conventional pressure reducing valve system shown in FIG. 5 includes a diaphragm 24, a spring 25, a valve shaft 26, a valve seat 27,
Since it is composed of an assembly of parts having a very complicated shape and required processing accuracy, such as a spring retainer (spring pressure adjusting part) 28 and a diaphragm holding part 29, the required functions are very expensive.

In addition, in the flow rate control device of the conventional constant flow valve type shown in FIG. 6, since the water governor 58 is provided on the downstream side of the electromagnetic valve 54 in the cleaning device main body 53, the water governor 58 is deteriorated or clogged. In this case, there is a problem that maintenance such as replacement cannot be easily performed.

Also, since the water governor 58 is on the downstream side,
The piping in the pipe 53 must have a water passage structure that can withstand high water pressure, and cannot be a simple water passage structure such as a rubber hose.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, to provide a stable amount of water to a washing nozzle irrespective of the supply pressure such as tap water pressure with a simple configuration and at low cost, and to reduce the amount of water in the washing nozzle. The flow rate can be adjusted linearly from large to large, and maintenance of replacement and cleaning of the constant flow valve can be facilitated, and at the same time, the piping inside the cleaning device main body has low water pressure regardless of the supply pressure due to tap water pressure etc. An object of the present invention is to provide a flow control device for a sanitary washing device which can be configured.

[Means for solving the problem]

In the flow control device for a sanitary washing device according to the present invention, a water supply unit having a water tap is provided on the upstream side of a water supply port, and a constant flow valve is incorporated in the water tap of the water supply unit. A water stop valve is connected to the lower side of the water supply port, and a water channel branching part is provided further downstream. A main water channel leading to a local cleaning nozzle is connected to one branch water channel of the water channel branch portion, and a sub water channel leading to a discharge port is connected to the other branch water channel. A flow control valve for adjusting the flow rate to the sub-channel is provided at the opening of the sub-channel at the branch of the channel. In addition, a relief valve is provided that opens from the upstream or downstream of the channel branch to the sub channel when the water pressure on the main channel becomes higher than a predetermined water pressure.

Claim (2) In the flow rate control device of the sanitary washing device, the water supply unit is configured as follows. That is, a water supply body having a water passage therein, a constant flow valve provided in the water drainage plug and made of an elastic body having a main water passage substantially in the center, and a low water pressure provided between the outer periphery of the water drainage plug and the water supply body. A water supply unit is constituted by the water passage and sealing means for closing the low water pressure passage by adjusting the amount of water drainage plug.

(Operation)

The constant flow valve provided on the water tap of the water supply unit allows the flow rate not affected by a wide range of primary water pressure from low water pressure to high water pressure,
It is supplied to the main channel and the sub channel. Simple configuration with a flow control valve provided at the opening on the sub-channel side of the channel branch section, and a relief valve that opens from the upstream or downstream of the channel branch section to the sub-channel side when the main channel side becomes higher than a predetermined pressure. In addition, at a low cost, a stable amount of water is supplied to the washing nozzle irrespective of the level of supply pressure such as tap water pressure, and the flow rate of the washing nozzle can be linearly adjusted from small to large. In addition, since a flow control valve is provided on the sub-channel side, there is no flow control valve or the like that causes a channel loss on the main channel side. Even in a low water pressure range, a desired cleaning flow rate can be easily obtained from the local cleaning nozzle. In addition, since the constant flow valve is provided at the drain port of the water supply section at the uppermost stream, replacement of the low flow valve and maintenance such as cleaning can be facilitated, and at the same time, the piping in the main body of the cleaning device is connected regardless of the supply pressure. Therefore, a low water pressure water channel configuration can be realized. In addition, since the constant flow valve is provided at the drain plug of the water supply unit, the constant flow valve can be always removed at the time of draining water, so that deterioration of the constant flow valve can be prevented.

According to the configuration of claim (2), at the time of low water pressure, the water can flow through the main water passage and the low-pressure water passage by reducing the amount of entry of the water drain plug. At the time of high water pressure, the main water passage made of an elastic body is compressed and deformed in accordance with the water pressure by closing the low water pressure water passage with a water tap, and the amount of water flowing on the secondary side of the constant flow valve is controlled to be constant.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

In FIG. 2, reference numeral 11 denotes a water supply section which communicates with a water pipe in a waterway manner, and a water supply body 12 having a substantially T-shaped waterway therein.
And a water tap 13 screwed from below the water supply body 12. The drain valve 13 incorporates a constant flow valve 14. The constant flow valve 14 is formed of a rubber elastic body formed in a disk shape and having a main water passage 15 at the center, and is fixed in the guide portion 16. A low pressure water passage 19 between the guide part 16 and the water supply body 12
The low-pressure water channel 19 is stopped by the packing 18 as a sealing means when the knurled portion 17 of the water tap 13 is rotated to make the water tap 13 enter deeply upward. When the knurl portion 17 is rotated in the descending direction, the low-pressure water passage 19 is opened around the guide portion 16 again. Reference numeral 20 denotes a valve hole provided on the secondary side of the constant flow valve 14, which communicates a through hole 21 provided on a side surface of the guide portion 16 with a water passage 22. The water passage 22 is guided into the device main body 23.

24 is a packing for stopping water between the water stopper 13 and the water supply body 12. By rotating the knurling section 17, the constant-flow valve 14 and the packings 18, 24 of the water drainage stopper 13 are simultaneously removed.

In FIG. 1, reference numeral 3 denotes a water stop valve provided on the downstream side of the water supply unit 11, and is constituted by an electromagnetic valve. Reference numeral 4 denotes a waterway branching portion, which branches the waterway into the main waterway A and the auxiliary waterway B, and can adjust the amount of water flowing to the auxiliary waterway B. More specifically, reference numeral 4a denotes a branch case, which has a cylindrical shape, and has a water inlet 4b connected to the secondary side of the water stop valve 3 on the bottom surface. Branch waterways 4c and 4d for communicating with the main waterway A side and the auxiliary waterway B side respectively are provided on the outer periphery.
have.

Reference numeral 5 denotes a flow control cylinder, which is formed in a hollow cylindrical shape and has an open bottom surface and communicates with the water inlet 4b. A substantially triangular throttle hole 5a (see FIG. 3 (B)) is provided on the outer periphery at a position corresponding to the branch channel 4d.
The flow control valve 5 ', which is constituted by the flow control cylinder 5 and the branch case 4a and is provided at the opening of the water flow branch portion 4 on the side of the sub-water passage B, has a characteristic as shown in FIG. I have to. That is, when the rotation angle theta flow control knob 5d is 0 °, the flow rate Q _B is 0.6 / min flow of auxiliary water channel B side, when theta = 180 degrees, the flow rate Q _B of the auxiliary water channel B side 0 / min
(Closed state), that is, when the rotation angle θ increases.
Q _B is to decrease characteristics. This characteristic is determined by the size and shape of the substantially triangular aperture 5a. In FIG. 1, reference numeral 5c denotes an O-ring, which prevents leakage to the outside and leakage to each water channel. 5d is a flow control knob provided integrally with the flow control cylinder 5.

Reference numeral 6 denotes a relief valve, which is provided downstream of the waterway branch portion 4 between the main waterway A and the auxiliary waterway B. Main waterway A
When the water pressure on the side exceeds a predetermined pressure, the relief valve piece 6b is opened against the relief valve spring 6a, so that excess pressure is released to the sub-channel B side.

Reference numeral 7 denotes a hot water tank unit provided on the downstream side of the main water passage A, which is configured to heat water by a heater 7b and boil the hot water to a predetermined temperature by a hot water temperature sensor 7c. Reference numeral 8 denotes a local cleaning nozzle provided downstream of the hot water tank unit 7. Reference numeral 9 denotes a discharge port provided at the most downstream side on the side of the secondary water channel B,
It is configured to discharge to the toilet 10.

Next, the operation of this embodiment will be described. When the user turns on the washing switch, first, the water stop valve 3 is opened, and water flows from the water supply unit 11 and the water supply port 1. When the water supply pressure is relatively low (less than 2 kg f / cm ² ), the knurled part 17 of the water tap 13 of the water supply part 11 is rotated in the downward direction, so that the main water passage 15 (the It flows from an arrow I in FIG. 2 and a low-pressure water passage 19 (arrow O) formed around the guide portion 16.

When the water supply pressure is high (about ^{2 to} 8 kg f / cm ² ),
The knurl portion 17 of the water drain plug 13 is rotated in the ascending direction. As a result, the low pressure water passage 19 around the guide portion 16 is formed.
Is stopped by the packing 18, and the low flow valve 14 is compressed from the primary side to the secondary side by the water pressure. As a result, the water flow diameter of the main water passage 15 of the constant flow valve 14 is adjusted such that a constant flow rate flows in accordance with the water pressure on the primary side. That is, the relationship between the primary water pressure (P ₁ ) of the constant flow valve 14 and the flow rate (Q _T ) flowing through the constant flow valve 14 has characteristics as shown in FIG.

In this embodiment, the constant flow valve 14 is used so that the set flow rate (Q _T ) becomes 1 / min. Therefore, even if the supply water pressure changes from a low water pressure to a high water pressure, the flow after the constant flow valve 14 always flows by 1 / min.

The water flowing through the constant flow valve 14 provided in the water tap 13 of the water supply unit 11 flows through the valve hole 20, the through hole 21, the water passage 22, the water supply port 1, the water stop valve 3, and to the water branch unit 4. The water branches and flows to the main waterway A side and the auxiliary waterway B side. The hot water is supplied to the main water channel A by the hot water tank 7 through the communicating portion 4c, and is jetted from the local cleaning nozzle 8 to clean the local part of the human body.

In addition, the branch waterway 4d passes through the throttle hole 5a to the sub waterway B side.
Through the outlet 9 to the toilet 10.

Also, by turning the flow rate control knob 5d by the user,
The opening area on the side of the sub-channel B is variable by the throttle hole 5a having a substantially triangular shape provided in the flow rate adjusting cylinder 5, and as a result, the distribution ratio of the flow rate flowing to the side of the main channel A and the side of the sub-channel B changes. In addition, the flow rate ejected from the local cleaning nozzle 8 can be adjusted.

For example, when the user wants to wash at a flow rate as low as 0.4 / min, which is ejected from the local washing nozzle 8, the flow rate adjusting knob 5d is rotationally adjusted to increase the opening area of the throttle hole 5a on the side of the secondary water channel B. , the flow rate Q _B flowing to the secondary water channel B side, 0.6 / mi
It can be obtained by setting n. Conversely, if you want to adjust the flow rate to the local cleaning nozzle 8 to 1.0 / min,
Adjust the flow rate control knob 5d to set the flow rate on the
/ min, that is, it should be completely closed.

As described above, according to the flow rate control device of the sanitary washing device of this embodiment, the flow rate control valve 5 'is provided on the side of the sub-channel B, so that the flow rate control valve causing loss of the channel on the side of the main channel A is provided. Is unnecessary, and as a result, even in the water pressure region where the tap water pressure is low as compared with the flow control device of the conventional sanitary washing device, the desired washing flow rate Q _A max = 1.0 / min from the local washing nozzle 8.
Is easily obtained.

Furthermore, provided a constant flow valve 14 on the primary side of the waterway, the set flow rate Q _T is substantially equal, and the water meter and the desired maximum flow rate Q _A max ejected from the local cleaning nozzle 8 provided in the main water channel A side It may be set so as to be equal to or more than the dead water amount of the (water meter). Also, the set flow rate Q _T, so is constant the sum of the flow rate Q _B of the flow rate Q _A and the sub-water channel B side of the main water channel A side, set to be more insensitive water of the water meter, as described above If it is set, the rotation angle of the flow rate control knob 5d is at any angle,
It does not fall below the dead water volume of the water meter. Also,
If you decrease the flow rate Q _A flowing to the main water channel A side, because discharges into the toilet bowl 10 becomes large flow rate Q _B flowing that much to the secondary water passage B side can be used to clean the toilet bowl 10, waste water is discarded There is no water saving effect.

Further, since the relief valve 6 is provided between the main water channel A and the sub water channel B, even if the performance of the constant flow valve 14 itself slightly varies, the extra water flows from the main water channel A to the sub water channel B. Pressure can be released. Therefore, abnormal high water pressure is not applied to the local cleaning nozzle 8, and the user can use it with confidence.

〔The invention's effect〕

In the flow control device of the sanitary washing device of the present invention, since the constant flow valve is provided in the drain plug of the water supply portion, which is the most upstream part of the sanitary washing device, the constant flow valve may be deteriorated or clogged. In this case, maintenance such as replacement and cleaning can be easily performed simply by removing the drain plug, and the piping in the sanitary washing device has a low water pressure channel regardless of the supply pressure such as tap water pressure. For example, a rubber hose or the like can be used.

Further, as a measure for preventing freezing in a cold region, when draining water from the water channel, the constant flow valve provided with a water drainage plug is removed at the same time, so that deterioration of the constant flow valve due to freezing or the like can be prevented.

Furthermore, a constant flow valve provided in the water tap of the water supply unit can supply a flow rate that is not affected by a wide range of primary water pressure from low water pressure to high water pressure to the main water channel side and the sub water channel side. Also,
Simple configuration with a flow control valve provided at the opening on the sub-channel side of the channel branch section, and a relief valve that opens from the upstream or downstream of the channel branch section to the sub-channel side when the main channel side becomes higher than a predetermined pressure. In addition, it is possible to supply a stable amount of water to the washing nozzle regardless of the level of supply pressure such as tap water pressure at low cost, and to linearly adjust the amount of water in the washing nozzle from small to large. In addition, since a flow control valve is provided on the sub-channel side, there is no flow control valve or the like that causes a channel loss on the main channel side. Even in a low water pressure range, a desired cleaning flow rate can be easily obtained from the local cleaning nozzle. For this reason, there is no need to use a pressure reducing valve which is an assembly of parts having a very complicated shape and requiring high processing accuracy, which has been generally adopted in the past, and the structure is simplified.

The flow rate control device for a sanitary washing device according to claim (2) is configured such that a water supply unit has a constant flow rate comprising a water supply body and an elastic body provided at a drain plug and having a main water passage substantially at the center as follows. A valve, a water passage for low water pressure provided between the outer periphery of the water tap and the water supply body, and sealing means for closing the water passage for low water pressure by adjusting the amount of ingress of the water tap, so that the pressure from the low water pressure to the high There is an effect that a flow rate that is not affected by the primary water pressure in a wide range up to the water pressure can be more favorably supplied, and the maintenance of the constant flow valve can be more easily facilitated.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a flow control device of a sanitary washing device according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of a water supply portion thereof, and FIGS. 3 (A) and 3 (B) are the same. FIG. 4 is a graph showing a flow rate control characteristic of the flow control device and an explanatory diagram of a schematic shape of a throttle hole corresponding to the flow control knob; FIG. FIG. 6 is a cross-sectional view of a conventional flow rate control device of a pressure reducing valve type, and FIG. 6 is a cross-sectional view of a conventional flow control device of a constant flow valve type. 1 ... water supply port, 3 ... water stop valve, 4 ... water channel branch, 4c, 4
d: Branch water channel, 5: Flow control cylinder, 5 ': Flow control valve, 6: Relief valve, 8: Local cleaning nozzle,
9 ... discharge port, 11 ... water supply section, 12 ... water supply body, 13 ...
... Drainer, 14 ... Constant flow valve, 15 ... Main water passage, 18 ... Packing as sealing means, 19 ... Low water pressure water passage, A ...
… Main channel, B …… Sub channel

Claims (2)

(57) [Claims] 1. A water supply unit provided at an upper side of a water supply port for draining water, a constant flow valve incorporated in the water drainage stopper of the water supply unit, and a water stop valve connected to a lower side of the water supply port. A water passage branching portion that branches on the downstream side of the water stop valve, a main water passage that is connected to one branch water passage of the water passage branch portion and that reaches a local cleaning nozzle, and is connected to the other branch water passage of the water passage branch portion. And a flow control valve which is provided at an opening on the sub-channel side of the channel branch portion and adjusts a flow rate to the sub-channel, and a water pressure on the main channel becomes higher than a predetermined water pressure. And a relief valve that opens from the upstream or downstream of the waterway branch to the sub-waterway when the water flow branches. 2. A water supply unit comprising: a water supply body having a water passage therein; a constant flow valve provided in the water drainage plug and formed of an elastic body having a main water passage substantially at the center; an outer periphery of the water drainage plug; The flow control device for a sanitary washing device according to claim 1, further comprising a low water pressure water passage provided between the body and the body, and sealing means for closing the low water pressure water passage by adjusting an amount of the water drain plug to enter.