JPH0414543Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention has a rim passageway in which a water injection hole is drilled at the upper periphery of the bowl, protruding inward from the bowl, and is formed outside the bowl at the rear of the bowl. The present invention relates to a flush toilet having an odor inlet that communicates an exhaust passageway connected to an exhaust fan with an odor intake port that communicates with the inside of the bowl.

<Prior Art> Conventionally, this type of flush toilet has an exhaust passage integrally formed in an annular shape along the inner circumferential surface of a rim passageway, as disclosed in, for example, Japanese Utility Model Application No. 49-21852, or By forming a separate part inside the rim water passage and opening the odor intake hole at the lower end of this exhaust passage above the opening position of the water injection hole, cleaning water during flushing does not flow into the odor intake hole. There is something like this.

<Problems to be solved by the invention> However, in such conventional flush toilets, the opening position of the odor inlet is above the water injection hole and is away from the odor source in the bowl, and furthermore, due to the structure, the odor Since the opening area of the inlet cannot be made extremely large, only a portion of the odor diffused from the odor source can be sucked in, making it impossible to exhaust all of the odor to the outside of the toilet.In addition, if water or filth gets into the odor inlet during cleaning, etc. If they do get into the bowl, it is difficult for them to come out from the odor inlet into the bowl, causing the problem of malfunctioning of the exhaust fan.

Furthermore, since the exhaust passage is formed in an annular shape around the entire circumference of the rim water passage, there is also the problem that the structure becomes complicated and the cost increases.

In view of the conventional circumstances, the present invention has been developed by opening an odor inlet with a large opening area close to the odor generation source, making it easier for water and waste to flow into the bowl from the odor inlet, and making it easier for water and dirt to flow into the bowl. The purpose is to simplify the structure near the waterway.

<Means for Solving the Problems> The technical means taken by the present invention to solve the above problems is to bulge out a part of the upper end of the bowl to the outside of the rim passageway to form an odor inlet on the bottom surface of the rim passageway. The exhaust passage is opened at approximately the same height as the water injection hole, and the lower surface of the exhaust passage on the odor inlet side is sloped continuously downward toward the inner surface of the bowl.

<Function> According to the above-mentioned technical means, an odor intake port is opened independently from the rim water passageway at a position approximately at the same height as the water injection hole opening position on the lower surface of the rim water passageway. Even if water or dirt enters the exhaust passage from the suction port, it will flow down into the bowl due to the downward slope.

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

In this embodiment, as shown in Fig. 1, a water supply chamber _A4 with a water supply port _A5 to which a water supply device D is connected is formed in the upper part of the rear part of the toilet main body A, and a bowl _A1 is divided in the front part. This is what I did.

There are many water injection holes on the bottom surface of the upper periphery of bowl _A1 .
A ₃ ... is formed into a ring shape so as to protrude inward from the bowl a ₁ with a rim water passage a ₂ which is opened at appropriate intervals.

Further, an odor intake port 1 is provided on the inner surface of the bowl _a1 , which communicates with an exhaust passage 2, which will be described later.

The odor inlets are a pair on the left and right at the top of the rear of bowl _A1 , or
Or an exhaust passage 2, ₂ , which has either the left or right side bulged out to the outside of the rim passageway A2, and is partitioned on the left or right side of the water supply chamber _A4 , or at approximately the same height as the rim passageway _A2 . By communicating with the lower surface of the front end of
A pair will be established on the left and right sides of the rim waterway _a2 , or one on either side.

The exhaust passage 2 has its lower surface sloped downward from the front, that is, from the lower surface on the side of the odor intake port 1 toward the inner surface of the bowl _a1 , so that cleaning water, sewage, and filth are removed from the odor intake port 1 into the exhaust passage 2. Even if water enters the toilet bowl _A1 , it will flow down into the bowl A1, and an exhaust port 3 is provided at the rear face of the toilet main body A at the rear end.

These left and right pair of exhaust ports 3, 3, or one of the left and right exhaust ports 3 has an exhaust pipe 4 connected to the outdoors.
are connected to each other, and an exhaust fan B is installed in the middle of this exhaust pipe 4.

This exhaust fan B is an intake fan that sucks the odor in the bowl a 1 from the odor intake ports 1, ₁ and exhausts it outdoors via the exhaust passages 2, 2 and the exhaust pipe 4. is controlled by a photoelectric sensor C installed in the toilet, and when the user approaches the toilet body A, the photoelectric sensor C rotates the exhaust fan B, so that the user leaves the toilet body A after urinating. Then, the exhaust fan B is stopped after a certain period of time.

Further, the rim water passage _a2 communicates with the water supply chamber _a4 at the rear end and the bowl _a1 at the front end.
It communicates with the water conduit A ₆ formed on the back side, and this water conduit
The bottom end of _A6 has a jet hole that passes through the bottom wall of Bowl _A1 .
Open _A7 towards the entrance _A9 of drainage canal _A8 .

Drainage channel _A8 extends diagonally upward along the back side wall of Bowl _A1 from an entrance _A9 opened at the bottom of Bowl _A1 .
A U-turn is made from a position where a certain water level is formed in the bowl _a1 , that is, a water sealing part _a10 is formed, and the toilet bowl a1 communicates with an outlet _a11 provided at the rear surface of the toilet bowl body A.

On the other hand, the water supply device D connected to the water supply chamber _A4 includes a solenoid valve _d1 that supplies cleaning water with a small instantaneous flow rate to the water supply chamber _A4 , and an electromagnetic flush valve _d2 with a high instantaneous flow rate, These solenoid valve d ₁ and solenoid flush valve d ₂ are normally both closed, and the solenoid valve
When the valve _d1 opens, flushing water with a small instantaneous flow is supplied to the rim water passage _a2 through the water supply chamber _a4 of the toilet body A, and a large number of water injection holes a3 drilled in the lower surface of the toilet bowl _A3 ... Water is sprayed onto the inner surface of a ₁ to form a water film, and when electromagnetic flush valve d ₂ is opened, cleaning water with a high instantaneous flow rate is supplied to the rim passageway a ₂ and a large number of water injection holes a ₃
...Water is spouted onto the inner surface of bowl _a1 , and the water conduit
Jet water jets out from the jet hole _{A7 via A6 ,} causing a siphon effect in the bent drainage channel _A8 , and sewage and filth in the bowl _A1 are completely discharged to the outside of the toilet body A.

In the above-mentioned embodiment, the operation of the exhaust fan B was controlled by the photoelectric sensor C, but the present invention is not limited thereto. It is also possible to turn on the power immediately before using main body A and turn off after use. Further, the water supply device D is not limited to the above configuration, and may have any configuration.

<Effects of the Invention> Since the present invention has the above configuration, it has the following advantages.

An odor inlet is opened at approximately the same height as the water injection hole on the lower surface of the rim conduit, and is separate from the rim conduit, so that even if water or dirt enters the exhaust passage through this odor inlet, it will not flow down. Since the water flows down into the bowl due to the slope, the odor inlet is opened with a large opening area so as to be close to the odor source, and the rim water passageway is designed to facilitate the flow of water and waste into the bowl from the odor inlet. Nearby structures can be simplified.

Therefore, the opening position of the odor inlet is located above the water injection hole, away from the odor source in the bowl, and compared to the conventional system where the opening area of the odor inlet cannot be made extremely large due to the structure, the odor inlet is located above the water injection hole and away from the odor source. All of the diffused odor can be exhausted to the outside of the toilet bowl, and even if water or dirt gets into the odor inlet during cleaning, it is easy to escape from the odor inlet into the bowl, preventing the exhaust fan from malfunctioning, and preventing rim ventilation. Compared to the conventional structure in which the exhaust passage is formed in an annular shape around the entire circumference of the water channel, the structure is simplified and costs can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional side view of a flush toilet showing an embodiment of the present invention, Fig. 2 is a plan view of the same with a portion cut away, Fig. 3 is a front view of the same, and Fig. 4 is a side view of the flush toilet. Figure -
It is a sectional view along the line. A...Toilet body, _a1 ...bowl, _a2 ...rim passageway, _a3 ...water injection hole, B...exhaust fan, 1...
Odor inlet, 2...exhaust passage.

Claims (1)

[Scope of utility model registration request] A rim passageway with a water injection hole drilled in the upper peripheral edge of the bowl is formed to protrude inward of the bowl, and the inside of the bowl is communicated with an exhaust passageway formed outside the bowl at the rear of the bowl and connected to an exhaust fan. In a flush toilet with an odor inlet, a part of the upper end of the bowl bulges out to the outside of the rim passageway, and the odor inlet is located at approximately the same height as the water injection hole drilled on the lower surface of the rim passageway. A flush toilet, which was opened in 2007, and is characterized in that the lower surface of the odor inlet side of the exhaust passage is sloped continuously downward toward the inner surface of the bowl.