JP2531034Y2 - Toilet bowl deodorizer - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The deodorizing device for a toilet of the present invention, in particular, a method of sucking odor from a bowl portion of the toilet and discharging the sucked odor to a desired discharge portion through a deodorizing passage. The present invention relates to a toilet bowl deodorizing device.

(Prior Art) Conventionally, a toilet bowl deodorizing apparatus of this type is known from Japanese Utility Model Application Laid-Open No. 64-5981.

This publication has a deodorizing path which is open at one end facing the bowl portion of the toilet and the other end of which is connected to the defecation path of the toilet, and includes an exhaust fan and an electromagnetic valve in the middle of the deodorizing path. ing. The exhaust fan and the electromagnetic valve are turned on when the toilet is in use, and are turned off when the toilet is not in use. That is, the solenoid valve is open while the exhaust fan is operating,
When the exhaust fan stops, the valve closes to prevent odor backflow.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional toilet deodorizing device, if for some reason a back pressure greater than the blow-out pressure of the fan is applied from the side of the exhaust toilet during operation of the exhaust fan, odors may be generated from the exhaust toilet. Backflow and the deodorizing effect is lost.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object thereof is to provide a deodorizing device for a toilet having a valve that opens and closes in synchronization with an ON / OFF of an exhaust fan in a deodorizing passage. It is another object of the present invention to reliably prevent the backflow of odor even when a back pressure greater than the blow-out pressure of the fan is applied from the discharge unit side during the operation of the fan.

(Means for Solving the Problems) In order to achieve the above object, in the toilet deodorizing device of the present invention, a deodorizing path is opened at one end facing the ball portion of the toilet and the other end communicates with a desired discharge unit. The deodorizing device for a toilet having an exhaust fan in the deodorizing path and an opening / closing valve that opens in synchronization with the start of driving of the fan and closes in synchronization with the stopping of the driving, wherein In the valve state, when the valve body receives a back pressure equal to or higher than the discharge pressure of the exhaust fan, a check mechanism is provided which is urged by the back pressure and closes the valve.

(Operation) In the toilet deodorizing device configured as described above, the valve that opens and closes the deodorizing passage opens and closes in synchronization with the turning on and off of the exhaust fan, and the back pressure from the exhaust unit side increases the exhaust fan. The valve closing operation is performed when the pressure becomes larger than the blowout pressure.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In this embodiment, as shown in FIGS. 1 and 3, the toilet is a so-called tank-closed toilet in which a flush water tank b is integrally mounted on a rear upper surface of a main body a of the toilet. Instead, a so-called one-piece type or a type in which the toilet body and the tank are disposed separately may be used.
The toilet body a is provided with a rim portion 7 having a water passage 6 therein and a ball portion 1.
It has a conventionally well-known structure and form in which a reservoir 1a formed along the upper edge and provided at the bottom of the ball portion 1 is connected to the defecation channel 3 via a trap drainage channel 8.

In this embodiment, a part of the rim portion 7 is defined by the water passage 6 at the rear portion of the main body a, and the odor intake 9 facing the inside of the ball portion 1 is opened on the lower surface thereof, and the odor intake 9 is displaced. A deodorizing path 3 for communicating with the path 2 is provided.

The deodorizing passage 3 communicates with the odor intake port 9, forms an odor suction chamber 10 formed in the main body a, an exhaust fan 4 provided with the suction side connected to the odor suction chamber 10, and an exhaust side of the exhaust fan 4. A connecting pipe 11 having an on-off valve 5 connected thereto;
The outlet side is constituted by an exhaust passage 12 communicating with the defecation passage 2 of the main body a. The exhaust fan 4 and the communication pipe 11 are accommodated in a deodorizing box 13 and arranged on the rear upper surface of the main body a.

The odor suction chamber 10 includes a main body a on which the washing water tank b is mounted.
A primary-side through hole 14 extending in the main body a to the rear part and communicating with the odor suction chamber 10 is opened on the upper surface of the rear part of the main body a.

In the main body a, a secondary side through hole 15 which is paired with the primary side through hole 14 is opened on the rear upper surface, and an odor discharge port 16 is opened on the lower side of the defecation passage 2 as much as possible. The exhaust passage 12 is connected to the outlet side of the secondary side through hole 15 and the odor discharge port 16.
Are formed. Note that the exhaust passage 12 may be formed integrally with the main body a, or may be formed as a separate member.

Further, the main body a rises up the peripheral edge of the rear upper surface except for the rear edge portion, and mounts the washing water tank b on the upright wall 17. A water supply chamber 18 communicating with the water passage 6 is formed in a protruding shape, and a space excluding the water supply chamber 18 is a deodorizing box mounting space 19.

The primary side and secondary side through holes 14 and 15 are opened in the deodorizing box mounting space 19.

On the other hand, the deodorizing box 13 is a box body having a suction hole and a discharge hole (both not shown) on the bottom surface, and accommodates and arranges the exhaust fan 4 so that the intake port 20 thereof corresponds to the suction hole. The exhaust port 21 and the discharge hole of the nozzle 4 are connected inside the box by the L-shaped connecting pipe 11 provided with the open / close valve 5, and the suction hole is connected to the primary side through hole 14, and the discharge hole is connected to the secondary side. By contacting the through holes 15 respectively, the deodorizing box mounting space 19 of the main body a
It is arranged and fixed.

The exhaust fan 4 is a well-known sirocco fan or the like, and its operation is started by the detection of a human body sensor (not shown) arranged on the toilet body a or the wall surface of the tray room.
The control unit 22 controls so as to stop after the operation for a predetermined time due to the disappearance of the sensor detection.

The on-off valve 5 is an electromagnetic valve.
The movable iron core 25 is moved by being attracted by the attraction force generated in the coil when the power is supplied to the coil, and is returned to the original position by the urging force of the return spring 24 when the attraction force disappears due to the stop of the power supply.
And a valve body 28 which advances and retreats via a spindle 26 linked to a movable iron core 25 to move toward and away from a valve seat 27. The valve body 28 corresponds to the valve seat 27 from the secondary side, and is configured to open by energization and close by stopping the energization.

The operation of the on-off valve 5 is controlled by the control unit 22 so as to open in synchronization with the start of the exhaust fan 4 and close in synchronization with the stop of the exhaust fan 4.

Therefore, the on-off valve 5 is opened during the operation of the exhaust fan 4, but is closed when the exhaust fan 4 is stopped to prevent the backflow of odor from the defecation passage 2 through the deodorizing passage 3.

The on-off valve 5 is provided with a check mechanism A. That is, the on-off valve 5 is provided with a joint 32 having a hollow portion 29 having a narrowed entrance formed downwardly interposed between the spindle 26 and the movable iron core 25.
By inserting the rear portion of the spindle 26 into the hollow portion 29 of the 32 in a loose fitting manner, the spindle 26 is linked to the movable iron core 25 via the joint 32 so as to be able to advance and retreat.

The spindle 26 has a flange-shaped latching portion 30 at the rear end larger than the entrance of the hollow portion 29 to prevent the spindle 26 from dropping off the joint 32 and a weak auxiliary spring between the latching portion 30 and the upper surface of the hollow portion 29.
We load 31 and always push forward direction. The auxiliary spring 31 has a function of adjusting how much back pressure is applied to the valve body 28 to close the valve.

Therefore, even in a state where the electromagnetic coil 23 is energized and the valve 5 is opened, a back pressure is applied to the valve body 28 from the defecation passage 2 side, and the back pressure is applied to the blowing pressure of the exhaust fan 4 by the auxiliary spring 31. When the pressure is greater than the pressure obtained by adding the spring pressure, the blowout pressure of the exhaust fan 4 and the auxiliary spring
The valve retreats against the spring pressure of the valve 31 and contacts the valve seat 27 to close the valve. Thereby, the backflow of the odor from the defecation passage 2 is prevented. And if the back pressure disappears or becomes weak, the valve body 28 will have its own weight,
The spring advances again by the spring pressure and the fan blowing pressure, and separates from the valve seat 27 and opens.

Next, FIG. 6 shows another embodiment of the on-off valve 5. Although the basic structure is the same as that of the above-described embodiment, the retraction of the spindle 26 due to the back pressure is established at the link between the spindle 26 and the joint 32. The back pressure detection switch 33 for turning off the exhaust fan 4 in this ON state is provided, and only this point is different from the above-described embodiment.

Therefore, according to this embodiment, when a large back pressure is generated on the side of the defecation path 2 and the valve body 28 is pushed back and closed, the fan 4 stops, and in synchronization with this, the electromagnetic coil 23 of the on-off valve 5 is energized. Also, the movable iron core 25 returns to the original position and the on-off valve 5 is forcibly closed, so that the reliability is improved as compared with the above-described embodiment.

The back pressure detection switch 33 can be constituted by, for example, a contact b proximity switch provided on the rear end of the spindle 26 and on the upper surface of the cavity 29 of the joint 32.

In the two embodiments described above, the closing timing of the on-off valve 5 when the back pressure is applied is configured by the auxiliary spring 31. However, the auxiliary spring 31 is not used, and depending on the weight of the valve body 28 itself, It is also possible to adjust whether to close the valve with a certain back pressure.

It is desirable that the spring pressure of the auxiliary spring 31 and the weight of the valve body 28 be as small as possible.

In addition, the defecation route for discharging the odor may be a defecation route constituted by a defecation pipe 33 piped to a building instead of the defecation route 2 of the toilet body, and is not limited to a defecation route, and is not limited to a defecation route. It may be one that exhausts air.

(Effects) The present invention is configured as described above, and has the following effects.

Despite the fact that the on-off valve provided in the deodorization path is linked to the ON / OFF of the exhaust fan, if the back pressure from the exhaust unit becomes larger than the exhaust fan blow-off pressure, the valve closes even during fan operation. And the backflow of the odor from the defecation route side can be prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view of a deodorizing device for a toilet showing one embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, FIG. FIG. 4 is a perspective view of the functional unit, partially cut away. FIG. 5 is an enlarged sectional view taken along line VV of FIG. 1, FIG. 6 is a sectional view showing another embodiment of the main part, and FIG.
The figure is a circuit configuration diagram of a main part. A: Check mechanism, 1: Ball part 2: Defecation path (discharge part), 3: Deodorizing path 4: Exhaust fan, 5: Open / close valve

Claims (1)

(57) [Scope of request for utility model registration] 1. A deodorizing passage having one end open into the ball portion and the other end communicating with a desired discharge portion. The deodorizing passage has an exhaust fan and an opening in synchronization with the start of driving of the fan. Speak
In a deodorizing device for a toilet having an on-off valve that closes in synchronization with driving stop, when the back pressure applied to the valve body of the on-off valve exceeds a predetermined value, the valve is urged by the back pressure to close the valve. A deodorizing toilet with a stop mechanism.