JP2557875Y2 - Odor suction duct for toilet - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention is, for example, provided in a casing for local cleaning fixed to a toilet body, for sucking off an offensive odor from a ball portion of the toilet body, and for exhausting or deodorizing the odor as it is. It relates to the structure of the odor suction duct.

[0002]

2. Description of the Related Art A sanitary washing apparatus for local washing, in which a casing is fixed to a toilet body, has been conventionally used. This sanitary washing device is provided with a nozzle device for local washing in a casing, and a hot water tank and a valve unit for supplying washing water to the nozzle device are provided. It incorporates equipment.

[0003] In addition to such a local washing and drying function, a device having a deodorizing function of sucking off the unusual odor accumulated in the bowl portion of the toilet body and deodorizing it is already widely used. I have. This is because, for example, the applicant has filed Japanese Utility Model Application No. 2-11.
As proposed by Japanese Patent No. 1259, a duct for odor suction is incorporated in a casing, one end of the duct is opened facing a ball side, and a deodorizing function section is provided on the other end side. This deodorizing function section is composed of an ozonizer that converts air into ozone, a fan that sucks air from the ball section, and a catalyst that promotes deodorizing, arranged in this order. Smells.

[0004] The odor suction duct has a hollow shape with an air passage inside the odor suction duct, and in order to absorb the odor from the ball portion, the tip thereof is opened with the ball portion facing the ball portion. There is a need. On the other hand, when the cleaning water is sent to the ball portion to discharge the waste, or when the cleaning water is discharged from the nozzle when using the local cleaning device, the water may scatter to the duct portion.

[0005] If the tip of the odor suction duct is open toward the ball, the scattered water may be sucked into the duct by the suction force of the fan, which may damage the ozonizer and the catalyst. Absent. In order to prevent this, a waterproof structure is conventionally provided in the duct.

[0006]

In this waterproof structure, since water is often sucked along the bottom wall of the odor suction duct, a part of this bottom wall is formed in a cross section of a flow path like a rib. It is crossed up and started, thereby blocking the flow of water. If such a rib is provided, even if water is sucked in by the fan, the water does not reach the ozonizer side beyond the rib and an appropriate deodorizing function is maintained.

However, when the plate-like rib is raised,
Due to the sudden change in the cross-sectional shape and area of the flow channel and the occurrence of turbulence behind the ribs in the flow direction, the ventilation noise increases. In addition, if the ribs are raised to ensure that the water is blocked, the flow path resistance increases, the air flow decreases, and the deodorizing effect is affected.

As described above, in the conventional structure, although water can be prevented from entering, there is a problem that the ventilation sound increases, the deodorizing effect decreases, and the like.

The problem to be solved in the present invention is to make it possible to reliably prevent water from entering into the odor suction duct without increasing the ventilation sound and reducing the deodorizing effect.

[0010]

SUMMARY OF THE INVENTION The present invention provides a suction mechanism with a built-in fan which has a duct flow path opened at one end facing a ball portion of a toilet body, and which sucks the odor of the ball portion into the duct flow path. And an open end side of the duct flow path to the ball portion is bent to one side in the width direction, and a gentle upward direction from the open end to the back of the duct flow path at the bottom surface of the duct flow path. And a guide for rectifying the flow toward the back side is provided in a substantially bent portion of the duct flow path.

[0011]

[Function] By the suction force of the fan, the air containing the unpleasant odor of the ball portion is sucked from the duct flow passage to the suction mechanism, and is discharged as it is to the outside of the toilet. Discharge as air. Since the bottom surface is gently inclined obliquely upward in the duct flow path, even if water enters from outside, the flow is prevented. Further, even if the front end side of the duct flow path is bent to one side in the width direction, since the guide for adjusting the flow to the back side is provided, the resistance due to the bending is suppressed, and the generation of turbulence is also prevented. And
If the posture of the guide provided at the bent part of the duct flow path end is appropriate for the flow path on the back side, it will be like a baffle plate against intruding water going to the flow path to the back side It blocks the progress of water.

[0012]

FIG. 1 is a perspective view showing the entire toilet equipment in which a casing is integrated with a toilet body, and FIG. 2 is a front view showing the inside of the casing.

In FIG. 2, a casing 2 for accommodating functional parts such as a sanitary washing device having a local washing function and a washing water tank is integrated with a toilet body 1. The casing 2 is supported by a base 3 fixed to the toilet body 1. The casing 2 has a toilet seat 2 a and a toilet lid 2.
b is integrally provided, and the operation of each functional unit is performed by a wall-mounted remote controller R or an operation panel 2c provided on the side of the casing 2 in an auxiliary manner.

A cleaning water tank 4 is fixed to the base 3, and devices for local cleaning and drying are arranged.
The equipment for local washing includes a hot water tank 5 connected to an external water supply source, a valve unit 6 fixed to the upper surface of the hot water tank 5, a nozzle device 7 for jetting washing water, and the like. A wind fan 8 is incorporated. These devices are controlled by a controller (not shown) as shown in the conventional example.
It is fixed in the proper position on the top.

A deodorizing casing 9 is provided below the right side of the base 3.
Is fixed, and a deodorizing duct cover 10 is provided on the upper surface of the base 3 in accordance with this position. Figure 3 shows the deodorant duct cover 1
FIG. 4 is a cutaway front view showing a flow path from the deodorizing duct cover 10 to the deodorizing casing 9.

A deodorizing passage 9a is provided inside the deodorizing casing 9.
And an ozonizer 11, a fan 12 and a catalyst 13 constituting a suction mechanism are arranged in this order. The ozonizer 11 ozonizes the flowing air by applying a voltage, and performs a pre-deodorization stage. The fan 12 is driven by a motor 12a disposed outside the deodorizing flow path 9a, and sucks air from the ball portion 1a of the toilet body 1. Then, the catalyst 13 is incorporated at the lowermost end of the deodorizing casing 9, and the air which has been completely deodorized after passing through the catalyst 13 is discharged from the outlet 9 b on the bottom surface of the deodorizing casing 9.

The duct cover 10 for odor suction is formed integrally with the upper surface of the base 3 so as to form a duct flow passage 14 inside the base 3 together with the base 3. As shown in FIG. Have. And, as shown in FIG.
The distal end portion of the duct cover 10 is fixed so as to hang on the front edge portion of the base 3, and the suction portion 10 a at the distal end is opened so as to face the ball portion 1 a of the toilet body 1. In addition, the base 3 where the rear end portion of the duct cover 10 covers,
A communication port 3a opened toward the deodorizing channel 9a of the deodorizing casing 9 is provided.

FIGS. 5A and 5B show the details of the duct cover 10. FIG. 5A is a partially cutaway plan view, FIG. 5B is a partially cutaway front view, and FIG. Is a left side view with a part cut away.

The duct cover 10 is provided on the base 3 as described above.
In order to form the duct flow path 14 together with the upper surface of the base 3, the duct 3 has a vertically concave vertical cross-sectional shape, and a rear end portion of the base 3 that covers the communication port 3 a is formed high with a step. Further, a straightening portion 10b is provided by extending straight forward from the rear end portion, and following the straightening portion 10b, the head is swung to the left as shown in FIG. I have. This suction unit 1
0a has a fan shape in which the length in the width direction increases toward the front end, and the front end is inclined so that the right side becomes lower as shown in FIG. As shown in FIG. 3, since the hot air fan 8 is disposed so as to cover the duct cover 10 as shown in FIG. 3, the inclination serves as an escape to avoid interference with the hot air fan 8.

The suction section 10a includes two rows of first and second rows.
Guides 10c and 10d are provided, respectively. These first and second guides 10c and 10d protrude from the upper surface plate of the duct cover 10 just like ribs, as shown in the perspective view of FIG. It was formed. The first guide 10c is the suction unit 1.
0a is divided into two in the width direction, and the suction unit 10a
Are linearly extended from the edge of the rectifying section 10b to the tip of the rectifying section 10b. Accordingly, the suction section 10a having a fan-shaped cross section in the plane of the flow path is divided into the internal flow path by the first guide 10c and the first guide 10 when viewed from the front.
The left half of the rectification unit 10b is hidden by the rear end of c. On the other hand, the second guide 10d is located slightly before the entrance to the flow straightening part 10b, and has a posture substantially parallel to the internal flow in the flow straightening part 10b.

Such first and second guides 10c, 10c
Due to the arrangement of d, as shown in FIG. 5A, the inner flow path is divided into three at the deepest side of the suction part 10a and at the entrance of the rectification part 10b. Then, the first guide 10c and the second guide 10d have a positional relationship of drawing a letter "C".

FIG. 7 is a schematic vertical sectional view of the duct flow path 14 taken along line AA of FIG. In this figure, the first and second guides 10c and 10d are omitted, but the lower ends of these first and second guides 10c and 10d are firmly mounted on the upper surface of the base 3, and are shown in FIG. Partition the internal flow path as described above.

In FIG. 7, in order to cover the duct cover 10, the base 3 has a rising wall 3 excluding only its front end.
B is formed, and the duct flow path 14 is defined together with the duct cover 10. The rear end side of the duct cover 10 swells obliquely upward, and is incorporated so that the communication port 3a is located directly below the duct cover 10. The upper surface from the front end of the duct flow path 14 to the communication port 3a is an inclined surface 3c that is gently inclined so that the front side is lower. At the highest level at the end of the inclined surface 3c, a raised portion 3d with a large inclination is provided over the entire length in the width direction. The protruding portion 3d is gently raised following the inclined surface 3c, and the vertex has a vertical cross-section toward the opening 3a as a curved surface.

In the above configuration, when the deodorizing function is operated by using the remote controller R or the operation panel 2c, the fan 12 is rotated by the motor 12a, and the ozonizer 11 is energized. By the rotation of the fan 12, air is sucked from the tip of the duct cover 10 whose open end faces the ball portion 1a of the toilet body 1, and this air flows through the duct flow path 14 through the ozonizer 11 toward the catalyst 13. . As a result, the air containing the unpleasant odor is deodorized by the ozonizer 11 and the catalyst 13, and is released as clean air without odor from the outlet 9b.

The air flow in the duct flow path 14 is such that the air flowing along the inclined surface 3c gradually rises upward because the inclined surface 3c of the base 3 forming the bottom surface is gently inclined upward. Guided. Since the raised portion 3d located at the end of the inclined surface 3c has a curved surface so that air can easily flow along the surface thereof, the air flow adjusted to an obliquely upward flow by the inclined surface 3c is: The fluid smoothly flows around the raised portion 3d and flows into the deodorizing flow passage 9a of the deodorizing casing 9 from the communication port 3a.

In response to such a flow in the duct flow path 14, the first and second guides 10c and 10d allow the air to flow from the suction part 10a expanded in a fan shape to the rectification part 10b whose flow path cross section in the width direction is narrow. In addition to reducing the flow path resistance at the time, it also functions to prevent water from entering. That is, if the first and second guides 10c and 10d are not provided, the flow path from the suction unit 10a to the rectification unit 10b is greatly reduced and the streamline from the suction unit 10a to the rectification unit 10b is bent. Channel resistance easily acts on air passing through the boundary,
Turbulence due to streamline bending is also likely to occur. On the other hand, if the first and second guides 10c and 10d are provided, the flow path from the suction unit 10a is divided into three by these,
The air to the rectification unit 10b flows separately. For this reason, the degree of curvature of the streamline for each of the divided flows is reduced, and although the provision of the first and second guides 10c and 10d causes friction loss, the overall flow path resistance is reduced and the turbulence is reduced. The occurrence of flow is also suppressed. Therefore, the rectification unit 1
The air flowing toward 0b has a smooth flow, and there is no reduction in the deodorizing effect due to insufficient air volume.

Further, since the inclined surface 3c and the raised portion 3d are provided on the bottom surface in the duct flow passage 14, even if water enters from outside, the water can be prevented by the inclined surface 3c and the raised portion 3d. In addition, the first and second guides 10c and 10d also act as resistance against water that is about to flow. In particular, as shown in FIG. 3, the right half of the duct cover 10 protrudes forward of the base 3, so that the tip and the lower surface of the duct cover 10 are easily immersed in water. In contrast,
Since the first guide 10c pushes back water as shown in FIG. 5A against water that is to enter from the right half area of the suction unit 10a, it hinders the progress of water. As described above, not only the incline of the water is prevented by the inclined surface 3c, but also the progress of the water can be suppressed by the first guide 10c. Similarly, the second guide 10d also helps to hinder the progress of the water, and can prevent the right half of the suction part 10a from entering the area where water easily enters.

As described above, the first and second guides 10c and 10d flow without generating turbulent flow, and the bulges are different from the conventional structure in which the ribs are cut into the flow path for waterproofing. Since 3d also has a curved smooth surface, turbulence does not occur. For this reason, the ventilation noise does not increase, and the flow resistance does not increase and the air volume does not decrease. Therefore, the intake from the ball portion 1a can be sufficiently performed in a quiet operation, and the deodorizing effect can be maintained high.

Further, since the slope of the inclined surface 3c forming the bottom surface of the duct flow path 14 and the raised portion 3d are blocked so as to prevent the entering water, the water enters the deodorizing casing 9 from the communication port 3a. Is prevented. For this reason, the ozonizer 11, the fan 12, and the catalyst 13 are not affected, and a good deodorization can be achieved by sufficiently performing each of these functions.

In the embodiment, the duct flow path 14 is formed by the base 3 and the duct cover 10. However, the duct flow path 14 is formed as a cylindrical one-piece, and one end thereof is opened facing the ball portion 1a. The other end may be connected to the deodorizing channel 9a of the deodorizing casing 9. Even in this case, it is a matter of course that the bottom surface of the duct flow path 14 is provided with a gentle upward slope in the flow direction to form a raised portion at the end.

In the embodiment, the deodorizing ozonizer 11 and the catalyst 13 are incorporated together with the fan 12 constituting the suction mechanism, and the air is discharged into the toilet after the odor is deodorized. An exhaust passage may be provided to the outside so that a suction mechanism can be provided in the exhaust passage so that the odor after the suction can be directly discharged to the outside of the toilet without providing the exhaust gas.

[0032]

[Effects of the invention] In the present invention, the gentle inclination of the bottom surface of the duct flow path and the guide provided at the bent portion of the tip of the duct flow path can prevent the progress of water, so that the ball portion of the toilet body can be prevented. The suction mechanism for sucking the odor is prevented from being wet. Further, even if the front end side of the duct flow path is bent, the guide provided therein regulates the flow toward the back side, so that turbulence of the internal flow is suppressed. For this reason, the ventilation noise of the internal flow of the duct flow path is also reduced, and quiet operation is possible.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the entire toilet equipment provided with a casing.

FIG. 2 is a sectional view showing the inside of a casing.

FIG. 3 is a schematic plan view showing an arrangement of a duct cover with respect to a base.

FIG. 4 is a cutaway front view showing from the duct cover to the inside of the deodorizing casing.

5A and 5B show details of the duct cover, wherein FIG. 5A is a cutaway plan view, FIG. 5B is a cutaway front view, and FIG. 5C is a cutaway left side view.

FIG. 6 is a perspective view of the suction unit of the duct cover when viewed upside down.

FIG. 7 is a longitudinal sectional view of the duct flow path taken along line AA of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Toilet bowl main body 1a Ball part 2 Casing 3 Base 3a Communication port 3b Rising wall 3c Inclined surface 3d Rising part 4 Washing water tank 5 Hot water tank 6 Valve unit 7 Nozzle device 8 Hot air fan 9 Deodorizing casing 9a Deodorizing flow path 9b Discharge port 10 Duct cover 10a Suction unit 10b Rectifying unit 10c First guide 10d Second guide 11 Ozonizer 12 Fan 13 Catalyst 14 Duct flow path

Claims (1)

(57) [Scope of request for utility model registration] 1. An odor suction duct comprising a duct flow path opened with one end facing a ball portion of a toilet body, and a suction mechanism with a built-in fan for sucking the odor of the ball portion is connected to the duct flow path. And bending the open end side of the duct flow passage toward the ball portion to one side in the width direction and giving the bottom surface of the duct flow passage a gentle upward slope from the open end to the back, In the almost bent part of the flow path,
An odor suction duct provided in a toilet bowl, provided with a guide for rectifying the flow toward the back side.