JPH03156040A - Washing water supply device for toilet bowl - Google Patents

Abstract

PURPOSE:To make it possible to maintain sanitation by providing two vacuum breakers having different mounting positions in the vertical direction to a water supply duct between a main valve and a selector valve to produce an air-gap. CONSTITUTION:The first and second normally open-type vacuum breakers 19 and 20 are respectively provided to different positions in the direction of up and down on the lower stream of a main valve 18 opening and closing a water supply duct 17. The water supply duct 17 is branched in the lower stream of the breakers 19 and 20 to provide a water supply pipe 21 and a jet water supply pipe 22, and a rim selector valve 23 and jet selector valve 24 are respectively provided on each of the water supply pipes 21 and 22. A jet injection hole 12a of a jet nozzle 12 provided to the lower stream side of the selector valve 24 is normally immersed in standing water of a bowl section 3. Accordingly, the water for the breakers 19 and 20 flows out to the outside of the water supply duct 17 from the breaker 20, so that an air-gap is surely produced to maintain sanitation.

Description

Detailed Description of the Invention (Field of Application in Business A) The present invention is used for cleaning toilet bowls that have a water supply port, such as a jet injection hole that supplies water to a trap drainage channel, that is constantly immersed in standing water in the toilet bowl. Regarding water supply equipment.

(Prior technology) In order to supply flush water to the bowl of the toilet bowl or trap drainage channel, a main valve such as a flush valve that opens and closes the water supply pipe to supply water to the toilet bowl, and a vacuum breaker downstream of this main valve are used. In a toilet bowl equipped with a switching valve for switching a flow path to a bowl part or a trap drainage channel through a water supply port, the water supply port to the trap drainage channel is constantly immersed in standing water, such as a jet nozzle. BACKGROUND OF THE INVENTION Toilet flushing and watering devices constructed are known.

(Problems to be Solved by the Invention) In such a toilet flushing water supply device, when there is only one vacuum breaker provided between the switching valve and the main valve,
When the switching valve to the bowl side is closed and the jet nozzle is open, if the nozzle becomes clogged with dirt, etc., the cleaning water in the water supply channel will not drain out. , an air gap cannot be secured in the water supply channel, which is unfavorable from a sanitary standpoint. The same applies when the jet nozzle is located higher than the vacuum breaker.

(Means for Solving the Problems) In order to solve the above problems, the present invention includes a main valve that opens and closes a water supply pipe to supply water to a toilet bowl, and a switching valve that switches water supply to a plurality of water supply ports of the toilet bowl. In the toilet bowl equipped with the water supply port, in which at least one of the plurality of water supply ports is constantly intruding into the standing water of the toilet bowl, the water supply channel between the main valve and the switching valve has a vertical direction. Two vacuum breakers are installed at different mounting positions.

(Function) By installing two vacuum breakers at different heights of the water supply channels, an air gap can always be created between the two vacuum breakers regardless of whether the water supply ports or switching valves are open or closed. .

(Example) Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a longitudinal sectional view of a toilet bowl equipped with a cleaning water supply device according to the present invention. In the figure, the toilet bowl 1 is a siphon jet type toilet bowl, and the toilet bowl 1 includes a bowl portion 3 separated by a partition wall 2 and a trap drainage channel 4. The trap drainage channel 4 connects an inlet 5 opened at the lower part of the rear wall of the bowl part 3 and an outlet 6 opened at the rear bottom surface of the toilet bowl 1 by bending it into a substantially inverted U shape. The trap drainage channel 4 has a weir section 4a which is a bent section thereof.
The discharge passage 4b on the more downstream side is formed into a substantially straight pipe shape, and a constricted portion 4c is provided at the lower end of the discharge passage 4b. This aperture part 4c is
The inner diameter of the discharge passage 4b is reduced in a direction perpendicular to the pipe wall of the discharge passage 4b. Note that the constricted portion 4c does not necessarily have to be provided at the position of the outlet 6, which is the lower end of the discharge passage 4b, and may be provided, for example, at a substantially intermediate portion of the discharge passage 4b or at a position downstream from the intermediate portion. In addition, in this trap drainage channel 4, a large number of protrusions 4d... are provided on the pipe wall on the downstream side of the weir part 4a, so that the washing water can flow through any of the protrusions 4d...
- The liquid collides with the liquid and flows down uniformly over the entire circumference of the pipe wall of the discharge passage 4b while changing the flow. As a result, cleaning water is supplied to the constriction portion 4c approximately evenly over the entire circumference,
A stable water film state is generated even at a small flow rate, allowing for efficient siphon action.

In the toilet bowl 1 according to this embodiment, a rim passageway 9 is formed in the rim part 8 at the upper edge of the bowl part 3 in an annular shape so as to protrude inward of the bowl part 3, and the bottom surface of the rim passageway 9 Water injection ports 10 are opened obliquely to the bowl part 3 at appropriate intervals. In addition, the rim water supply channel 9 is connected to the rim water supply chamber 1 at the rear.
I am contacting 1.

A jet nozzle 12 is attached to a jet nozzle attachment hole at the bottom of the bowl portion 3 in a watertight manner via an adhesive or the like. The jet nozzle 12a of the jet nozzle 12 is always immersed in the standing water, and is oriented approximately at the center of the upwardly inclined pipe leading from the inlet 5 of the trap drain 4 to the weir 4a. The jet nozzle 12 is made of metal or synthetic resin, and in this embodiment, the jet nozzle 12 is made of metal or synthetic resin.
The shape is hook-like.

A box 13 is provided at the rear upper part of the toilet bowl 1, and a cleaning water supply device (hereinafter referred to as water supply device) 14 is housed in the box 13.

The water supply device 14 includes a control device 15 which is a water supply control means,
push button switch 16a for large cleaning and small cleaning;
16b, an operation unit 16 which is a washing water amount selection input means for inputting a washing water amount selection input and a washing start input to the control device 15 at the same time, and a water supply water pipe 1 to the toilet bowl which is a water supply pipe.
A main valve 18 which is a flush valve that opens and closes 7 and supplies flush water to the toilet bowl, and on the downstream side of this main valve 18,
a normally open type first provided at different positions in the vertical direction;
A second vacuum breaker 19.20, and a rim switching valve 23 and a jet switching valve 24 provided on the rim water supply pipe 21 and jet water supply pipe 22, respectively, which are branched on the downstream side of the vacuum breakers 19.20. Consisting of

The rim switching valve 23 and the jet switching valve 24 are interlocked with each other, and close the jet switching valve 24 and open the rim switching valve 23 only when a drive signal is received from the control device 15. The switching valve 24 is composed of a normally open electromagnetic on-off valve.

The first and second vacuum breakers 19, 20 are mounted at different mounting positions in the height direction of the water supply channel 17, as shown in FIG. These < cuum breaker 19
．． 20 is springs 19a, 20a and ball valve 19b
, 20b, and only when there is water flowing through the water supply channel 17, the water pressure causes the ball valves 19b and 20b to move to the valve seat 19C12.
The structure is such that the pressure is pressed to 0c to close the atmospheric side and the water supply pipe.

Therefore, the first and second vacuum breakers 19.20
According to the above, when water does not flow through the water supply channel 17, both vacuum breakers 19.20 open the pipeline to the atmosphere, and as a result, water remaining in the pipeline between the vacuum breakers 19.20 always flows downward. 1<The vacuum breaker 20 will flow out of the pipe, and even if the jet nozzle's ejection hole h (clogged), there is a distance between these vacuum breakers (approximately 2511111 in the example).
), an air gap will always be created, resulting in excellent hygiene.

In addition, in Fig. 2, 25 is the lower vacuum breaker 1.
9, the path indicated by 26 in FIG. 1 shows the water discharged from the water tray 25 through the hole 11a provided at the bottom of the control box of the toilet bowl to the rim water passage chamber 1.
This shows the drainage route leading to 1.

(Effects of the Invention) As is clear from the above description, according to the cleaning water supply device of the present invention, two vacuum breakers are provided separated by a distance in the vertical direction of the water supply channel, so that the cleaning water flows through the water supply channel. Otherwise, an air gap will always be created between these vacuum breakers, which is extremely superior from a hygienic standpoint.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a toilet bowl equipped with a cleaning water supply device according to the present invention, and FIG. 2 is a partial sectional view of a water supply channel showing a vacuum breaker. In the drawing, 1 is a toilet bowl, 2 is a bowl part, 4 is a trap drainage channel, 17 is a water supply channel, IEH is a main valve, 19.20 is a vacuum breaker, and 23.24G is a switching valve.

Claims (1)

[Scope of Claims] A toilet bowl comprising a main valve that opens and closes a water supply pipe to supply water to the toilet bowl, and a switching valve that switches water supply to a plurality of water supply ports of the toilet bowl, the toilet bowl having a plurality of water supply ports. In the case where at least one of the water supply ports is constantly intruding into the standing water of the toilet bowl, two vacuum breakers are installed in the water supply channel between the main valve and the switching valve at different positions in the vertical direction. A toilet bowl cleaning water supply device characterized by: