JPH0351418Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention switches the deodorizing fan between two stages, low speed and high speed, depending on the usage situation of the user, and operates the deodorizing fan to the minimum necessary. The present invention relates to a toilet deodorizing device that forcibly exhausts odors from within the toilet bowl while reducing power consumption.

[Prior Art] Generally, methods for deodorizing odors in toilet rooms include an activated carbon absorption method in which odors are absorbed into activated carbon;
There are two methods: a masking method that mixes odors with scents so that the user does not feel the odors, and a ventilation method that forcibly exhausts odors from the toilet room. In the case of activated carbon absorption method, the deodorizing efficiency is only about 50%, so it is not possible to completely deodorize the odor that fills the toilet room.
Another disadvantage is that the activated carbon needs to be replaced in a short period of time. Furthermore, the masking method has disadvantages in that there are individual differences in scent preferences and, as in the case of the activated carbon absorption method, it is necessary to replace the aromatic agent within a short period of time.

On the other hand, the ventilation method forcibly exhausts the odor that fills the toilet room or toilet bowl, making it possible to achieve ideal deodorization. The present invention also relates to this ventilation method.

[Problems that the invention aims to solve] However, in the ventilation method, in order to completely deodorize the odor that fills the toilet room or toilet bowl, it is necessary to
The deodorizing fan must be operated continuously at a constant high speed rotation, which is inefficient and has the drawback of significantly increasing the total amount of power used. Furthermore, even if the deodorizing fan is operated only when in use, it usually operates at a constant high speed from the time the user enters the toilet to the time the user leaves the toilet. However, there is a wasteful operating area more than necessary, which is inefficient, and the total amount of power used increases.

This invention improves and eliminates the above-mentioned drawbacks of the conventional deodorizing fan by switching the deodorizing fan between two stages, low speed and high speed, depending on the usage situation and operating the deodorizing fan to the minimum necessary level. It is an object of the present invention to provide a toilet bowl deodorizing device that reduces power consumption.

[Means for solving the problems] The means of the present invention for solving the above problems are as follows:
an exhaust pipe that opens into the toilet bowl and communicates with an exhaust duct at the rear of the toilet; a deodorizing fan disposed between the exhaust duct and the exhaust pipe; and a deodorizing fan that rotates at two stages: low speed rotation and high speed rotation. It consists of a controller that performs switching operations. The controller includes a control unit that rotates the deodorizing fan at low speed in response to an opening/closing signal of the toilet room door, and a control unit that rotates the deodorizing fan at high speed for a predetermined period of time upon detecting that the user has moved away from the valve seat. It is equipped with

[Function] As shown in the time chart in FIG. 3 and the block diagram in FIG. 4, when the user closes the door 8 of the toilet room, the deodorizing switch 6 turns ON and sends a signal α to the controller 5. . Low speed control section 5 of controller 5
a rotates the deodorizing fan 1 at low speed in response to the signal α, sucks air in the toilet bowl from the opening 3a in the bowl of the exhaust pipe 3, and distributes it to the exhaust pipe 3, the deodorizing fan 1, and the exhaust duct 4; Exhaust outdoors. When the user leaves the valve seat 2c after use, the detection sensor 7 attached to the wall of the toilet room detects this and outputs a signal β to the high-speed control section 5b of the controller 5. The high-speed control unit 5b of the controller 5 receives the signal β and rotates the deodorizing fan 1 at high speed for a predetermined period of time T.
After the elapse of time, the deodorizing fan 1 is stopped. With this, the deodorizing fan 1 is operated at high speed only immediately before the odor is about to spread throughout the restroom, and can be kept to the minimum necessary. With this type of operation, it is possible to reduce power consumption by approximately 70% compared to continuous operation.

The configuration of the present invention will be explained below based on the embodiments shown in the drawings.

[Example] Fig. 1 is a longitudinal cross-sectional view showing the entire device of the present invention, and Fig. 2 is a plan view thereof. As shown in the figure, toilet bowl 2
An exhaust pipe 3 having an opening 3a in the inner surface 2a of the toilet bowl is built into the rear side surface of the toilet bowl. The opening 3a
In this embodiment, is located directly below the toilet rim portion 2b. This is to ensure that only the air or odor inside the toilet bowl is exhausted to the outside.
This is to prevent washing water or filth from the toilet bowl 2 from being taken in. Naturally, the position of the opening 3a is not limited to the illustrated embodiment. The other end of the exhaust pipe 3 is connected to the intake port (not shown) of the deodorizing fan 1 at the rear of the toilet bowl, and the exhaust port (not shown) of the deodorizing fan 1 is connected to an exhaust duct that communicates with the outside. Connected to 4. The exhaust fan 1 receives a low speed rotation command signal L from the controller 5.
The rotation speed and operating time are controlled in response to the high-speed rotation command signal H. The controller 5 includes a low-speed rotation control section 5a that outputs a low-speed rotation command signal L in response to the output signal α of the deodorizing switch 6, which is controlled ON/OFF by opening and closing the toilet room door 8, and an infrared rays installed on the wall of the toilet room. Alternatively, in response to the output signal β of the optical detection sensor 7, the high speed rotation command signal H is generated.
a high-speed rotation control section 5b that mainly controls the
It has c. In this embodiment, the door 8 is closed only when in use, and is opened when not in use.

Next, the operation mode of the deodorizing device configured as described above will be explained.

First, when the user closes the toilet room door 8 during use, the deodorizing switch 6 is turned on and outputs a signal α to the low speed rotation control section 5a of the controller 5, as shown in FIGS. 3 and 4. Low speed rotation control section 5
a outputs a low speed rotation signal L to the deodorizing fan 1 via the switch 5c, causing the deodorizing fan 1 to rotate at a low speed. As a result, the air in the toilet bowl is sucked through the opening 3a of the exhaust pipe 3 that opens on the inner surface 2a of the toilet bowl, and is exhausted to the outside through the exhaust pipe 3, the deodorizing fan 1, and the exhaust duct 4. When the user discharges waste into the toilet bowl, the interior of the toilet bowl begins to be filled with odor.
However, this odor is sucked by the deodorizing fan 1 rotating at low speed and exhausted to the outside. Therefore, odor does not enter the toilet room from inside the toilet bowl, and the user can use the toilet comfortably.

When the user leaves the valve seat 2c after use,
Since the top opening of the toilet bowl is open, the odor generated from the filth in the toilet bowl cannot be completely treated by deodorizing only by low-speed rotation, and some of the odor tends to spread into the toilet room. However, in the case of this device, the OFF signal of the infrared or optical detection sensor 7 attached to the wall of the toilet room detects that the user has left the valve seat 2c, and the sensor 7 A signal β is output to the high-speed rotation control section 5b of the device 5. The control unit 5b outputs a high-speed rotation command signal H to the switch 5c for a predetermined time T, and the switch 5c
c is the low speed rotation command signal L to the high speed rotation command signal H
The output is switched to rotate the deodorizing fan 1 at high speed. The operating time T of this high-speed rotation is set to be longer than the toilet bowl cleaning time t, and the high-speed rotation is continued for a predetermined time (T-t) even after the waste has been discharged and the toilet bowl inner surface 2a has been cleaned. . Therefore, immediately after the user leaves the valve seat 2c, the deodorizing fan 1 rotates at high speed, so that the odor that tends to spread from inside the toilet bowl into the toilet room is reduced by increasing the ability of the deodorizing fan 1. Therefore, almost all of them are the waste pipe 3, deodorizing fan 1,
It is forcibly exhausted from the waste duct 4 to the outside, and does not fill the toilet room. As described above, the high speed rotation command signal H is not outputted to the deodorizing fan 1 after the predetermined time T has elapsed, so the operation of the deodorizing fan 1 is stopped. Naturally, the high-speed rotation operation time T is set to the time required to completely exhaust the odor. Note that this operating time T is normally set to about 60 seconds, but the setting can be changed by adjusting the knob of the timer (not shown) built into the high-speed rotation controller 5b and changing the time constant. Changes are possible.

The time chart shown in the right half of Figure 3 is
The high speed rotation time T of the deodorizing fan 1 does not elapse T-
This is the case when another user enters the toilet room in the state x. In this case, the deodorizing switch 6 outputs the signal α to the low-speed rotation controller 5a while the high-speed rotation command signal H is being output from the high-speed rotation controller 5b, so the controller 5a outputs the low-speed rotation command signal L. A low speed rotation command signal L and a high speed rotation command signal H are input to the switch 5c. When the low speed rotation command signal L is newly input, the switching device 5c outputs the low speed rotation signal L to the deodorizing fan 1, and switches from high speed rotation to low speed rotation. Thereafter, the detection sensor 7 detects that the user has left the valve seat 2c, as in the case described above, and
Switching to high-speed operation for a predetermined time T is performed. Other functions and effects are the same as those described above.

It should be noted that the present invention is not limited to the above-described embodiments, and can be modified as appropriate. For example, the detection sensor 7 may also serve as a deodorizing switch that detects when a user enters the toilet room, or a pressure switch or the like may be provided on the valve seat 2c. Further, the opening 3a of the exhaust pipe 3 is not limited to the illustrated position, but may be at any suitable position on the inner surface 2a of the toilet bowl where it is difficult to suck in cleaning water and the like. Further, the exhaust pipe 3 may be formed into a conduit bent upward in the middle in consideration of suction of cleaning water.

[Effects of the invention] As explained above, in this invention, the deodorizing fan is operated at low speed from the time the user enters the toilet room until the user leaves the valve seat to remove the odor inside the toilet bowl. The system operates at high speed for a predetermined period of time after the user leaves the valve seat, and the odor that is about to spread from inside the toilet bowl into the toilet room is forcibly exhausted outside, so only the minimum amount of operation is necessary. The odor inside the toilet bowl can be forcibly exhausted, and the power consumption of the deodorizing fan can be reduced by about 70% compared to continuous operation. In addition, it is easy to change the setting of high-speed operation time,
Complete deodorization is possible regardless of the degree of odor generation.

[Brief explanation of the drawing]

The drawings are all related to the present invention and are
2 is a plan view thereof, FIG. 3 is a diagram showing a time chart of the embodiment device, and FIG. 4 is a block diagram of the embodiment device. 2a...Inner surface of toilet bowl, 4...Exhaust duct, 3...
Exhaust pipe, 1... deodorizing fan, 5... controller.

Claims (1)

[Scope of utility model registration request] an exhaust pipe that opens into the toilet bowl and communicates with an exhaust duct at the rear of the toilet; a deodorizing fan disposed between the exhaust duct and the exhaust pipe; and a deodorizing fan that rotates at two stages: low speed rotation and high speed rotation. The controller includes a control unit that rotates the deodorizing fan at low speed in response to an opening/closing signal of the toilet room door, and a control unit that rotates the deodorizing fan at a low speed when the user moves away from the valve seat. A toilet bowl deodorizing device characterized by comprising a control unit that rotates at high speed over time.