JPH0432178B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a flushing toilet such as a so-called siphon type or siphon jet type which cleans by siphon action, and in particular drains water toward the floor surface.

(Prior Art) FIG. 1 shows a conventional siphon jet type flush toilet of this type.

To explain this, the drainage channel 4' rises from the bottom surface of the ball part 2' along the back side wall of the ball part 2', makes a U-turn from a position where a constant water level can be maintained in the ball part 2', and breaks halfway. While bending, it communicates with the drain port 11' at the bottom of the toilet body A', and part of the flushing water flows from the tip of the rim passageway 6', through the headrace channel 9', and from the fountain hole 10' in the form of a jet, and flows into the drain channel 4. Water is sprayed toward the inlet 4a' of the tank.

Therefore, the cleaning water injected from the water fountain 10' rises up the drain channel 4' toward the U-turn portion 13', makes a U-turn, and becomes violently aqueous, but the portion after the U-turn portion 13' is greatly bent. As a result, water mixed with air becomes foamed and splashed and flows down the drain channel 4' in a full state, pushing out the air in the drain channel 4'.

In particular, since the drain channel 4' is bent at a right angle near the end, water forms a complete plug in this section 20 and flows out toward the drain port 11'. The trapped air is also sucked out, and the inside of the drain channel 4' is finally completely filled with water, and a strong siphon effect occurs due to the difference in the water level in the ball portion 2' and the position of the drain port 11'.

(Problem to be Solved by the Invention) As described above, in the conventional siphon type toilet bowl, the right-angled portion 20 formed near the end of the drain channel 4' is an important structural portion that causes the siphon action. As shown in FIG. 1, the drainage channel 4' may become clogged with long and thick waste, making it unusable.Moreover, since the drainage channel 4' is greatly curved, it is difficult to remove the waste.

It is an object of the present invention to solve the above-mentioned problems and to simplify the structure of a wastewater furnace so that it is not clogged with waste.

(Means for Achieving the Object) The basic configuration of the present invention for achieving the above object is that the opening from the upper end of the drain to the drain is formed in a substantially vertical shape, and the end of the drain and the drain are connected to each other. By forming a step at the connection part of the drain so as to protrude horizontally from the side opposite to the entrance of the drain, drainage water collides with the step and scatters, temporarily staying at the drain opening and causing water to flow out. The water flows down the plug to suck out the air in the drain to create a siphon effect, and to dent the inner wall of the drain on the side facing the stepped portion outwards. This ensures the diameter of the drainage channel.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In this embodiment, the toilet main body A is of the siphon jet type, as shown in FIG.

The toilet main body A has a ball part 2, a water supply chamber 3, and a drainage channel 4, which are divided into sections so as to be adjacent to each other through a partition wall 1, and a plurality of water injection holes 5 are provided on the lower surface of the upper end periphery of the ball part 2. An open rim passageway 6 is formed in an annular shape so as to protrude inwardly, and the rim passageway 6 communicates with the water supply chamber 3 via a communication hole 7 at the rear.

The water supply chamber 3 is formed at the rear of the toilet main body A, and has a water supply port 8 on the top surface and a water supply channel 9 defined at the bottom along the back surface of the ball part 2, and the water supply channel 9 has the water supply port 8 formed therein. A fountain hole 10 facing into the drainage channel 4 from the entrance 4a of the channel 4 is opened.

The drainage channel 4 extends obliquely upward along the entrance 4a opened in the bottom wall 1a of the ball part 2 and the back side of the side wall 1b of the ball part 2, and makes a U-turn from a position where a constant water level can be maintained in the ball part 2. The intermediate portion 4b extending substantially vertically downward and the outlet 4a formed above the drain port 11 opened at the rear bottom surface of the toilet main body A are bent and connected in a substantially inverted U shape. .

The side wall 1c of the vertical portion 12 opposite to the inlet 4a of the drainage channel 4 is located at a required height, specifically, the water that has violently risen from the inlet 4a toward the U-turn portion 13 jumps over the weir. A horizontal first step portion 1 having an appropriate width and depth at the collision position.
4 is formed to protrude inward of the drainage channel.

Also, the drain port 1 is connected to the central axis of the vertical portion 12.
The central axis of 1 is shifted toward the entrance 4a of the drainage channel 4,
At the connection between the lower end of the vertical portion 12 and the drain port 11, a second step portion 15 having an appropriate width is formed on the opposite side of the inlet 4a so as to protrude inward from the drain channel 4. The inner wall of the drainage channel 4 on the side facing the stepped portion 15 is formed to be recessed outward from the drain channel 4 from slightly above the stepped portion 15 19 .

Therefore, such a flushing toilet has water from the water intake port 8 to the water supply chamber 3.
When washing water is sent to the rim, a part of it enters the rim water passage 6 through the communication hole 7, and is sprayed from the water injection hole 5 drilled in the lower surface of the water passage 6 to wash the inner surface of the pole part 2. The remaining washing water passes through the water conduit 9, forms a jet from the water fountain 10, and is sprayed toward the inlet 4a of the drainage channel 4, and rises within the drainage channel 4 toward the U-turn portion 13.

The water that jumped over the weir of this U-turn portion 13 collides with the side wall 1c of the vertical portion 12 on the opposite side to the ball portion 2, and the water that has mainly flowed down along the side wall 1c flows into the second drain at the end of the drainage channel 4. The water collides with the stepped portion 15 and scatters violently, and temporarily accumulates at the inlet of the drain port 11, forming a plug of water. When this water plug flows down the drain port 11, the air remaining in the drain channel 4 is sucked out, and the drain channel 4 is finally completely filled with water, causing a siphon effect.

At this time, a first stage part 14 is provided in the vertical part 12 of the drainage channel 4 at a position where the water jumps over the weir and collides with the water, so some of the water also scatters and stagnates in this part. This causes a plug to form, making siphon action more likely.

In the above-mentioned embodiment, the first step portion 14 was provided protruding from the side wall 1c of the vertical portion 12, but the present invention is not limited to this. For example, as shown in FIGS. 6 and 7, the first step portion 14 is The first step portion 14 may be made to protrude inward by forming the upper side wall 1d of the portion 14 in a concave shape.

Further, reference numeral 16 in the drawing is a space formed below the ball part 2, and by providing a heat insulating material 17 and a planar heater 18 in this space 16, the ball part 2 can be heated.
It keeps the water inside warm and prevents it from freezing.

(Effects) Since the present invention has the above configuration, it has the following advantages.

The part from the upper end of the drainage channel to the drain outlet is formed almost vertically, and the connecting part between the end of the drain and the drain outlet is formed with a horizontal step on the opposite side from the entrance of the drain, which is different from the conventional method. Because the drain near the end does not bend at right angles, it does not get clogged with waste, and even if it does become clogged, it is easy to clean.

Since the opening from the upper end of the drain channel to the drain port is approximately vertical, the suction force generated by the siphon matches the direction of gravity, making it possible to obtain strong suction force.

Since the inner wall of the drainage channel on the side facing the step is recessed outward, the drain is not constricted by the step and the necessary diameter of the drain can be secured. Combined with this effect, it is possible to further ensure prevention of clogging with filth.

Since the inner wall of the drainage channel on the side facing the step is recessed, the ceiling of this recess functions as a stopper to prevent air from entering during drainage.
This can prevent siphon breakage due to air intrusion.

[Brief explanation of drawings]

FIG. 1 is a longitudinal side view showing an example of a conventional siphon toilet, FIG. 2 is a longitudinal side view of a siphon toilet showing an embodiment of the present invention, and FIGS. 3 and 4 are - 5 is an enlarged sectional view taken along line - in FIG. 2, FIG. 6 is an enlarged longitudinal sectional view of a flush toilet showing another embodiment of the present invention, FIG. 7 is a sectional view taken along the - line in FIG. 6. A...Toilet bowl body, 1a...Bottom wall, 1b...Side wall, 1c...Side wall, 2...Ball part, 4...Drain channel, 4a...Inlet, 10...Fountain hole, 11...Drain port , 12... Vertical portion, 15... Step portion (second step portion), 19... Recess formed by recessing the inner wall of the drainage channel.

Claims (1)

[Claims] 1. In a siphon-type toilet equipped with a drain that has an inlet in the bottom wall of the bowl, extends obliquely upward along the back side of the side wall of the bowl, is bent from an appropriate height, and has an outlet in the drain port on the bottom of the toilet. , the opening part from the upper end of the drainage channel to the drainage outlet is formed in a substantially vertical shape, and at the connection part between the drainage channel end and the drainage outlet, a stepped part is formed inside the drainage channel on the opposite side from the entrance of the drainage channel. A siphon-type toilet bowl characterized in that the drainage channel is formed horizontally so as to protrude from above, and the inner wall of the drainage channel on the side opposite to the step is recessed outward.