JP2808894B2 - Toilet flush water supply - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toilet flush water supply apparatus, and more particularly to a toilet flush water supply apparatus having a sensor.

[0002]

2. Description of the Related Art Conventionally, a sensor for detecting a person using a toilet and a control unit for opening and closing an on-off valve serving as a water supply valve based on a signal from the sensor are provided each time the toilet is used. There is known a toilet flushing / water supply device in which a switching unit is opened by a signal detected by a sensing unit of a user to perform flushing of a toilet.

[0003]

However, in the conventional toilet flushing / water supply apparatus, each time the toilet is used, the sensing unit opens the on-off valve for a predetermined time irrespective of the frequency of use by a signal obtained by sensing the user. Therefore, not only is water wasted, but there is also a drawback that odors are emitted and dirt is attached, which makes the user uncomfortable. An object of the present invention is to provide a toilet flushing / water supply device that solves such a drawback.

[0004]

In order to solve the above-mentioned problems, a toilet flush water supply apparatus according to the present invention determines the flow rate of water supplied from a water supply valve based on a toilet non-use time.

[0005]

According to the toilet flushing / water supply apparatus of the present invention, a flushing water amount suitable for the usage state of the toilet is supplied to the toilet based on the toilet non-use time.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram of a toilet flushing / water supply apparatus according to a first embodiment of the present invention. The toilet flush water supply device 1 includes a photoelectric sensor 2 as a sensing unit, a control unit 3, a constant flow valve 4, an on-off valve 5 as a water supply valve, and a power supply 6. The water supply pipe 7 is connected to the urinal 8 via the constant flow valve 4 and the on-off valve 5.
The connection order of the constant flow valve 4 and the on-off valve 5 may be reversed.

The control unit 3 includes, for example, as shown in FIG.
An input interface 3a, a microprocessor (hereinafter M
PU) 3b, a memory 3c as a storage means, an output interface 3d, and a timer 3e. The input interface 3a includes the photoelectric sensor 2 and the power source 6
Is connected, and the on-off valve 5 is connected to the output interface 3d. As the photoelectric sensor 2, for example, a sensor using infrared rays or the like is used, and when a person enters a sensing range such as in front of a urinal, a signal is sent to the control unit 3 via the activation signal line 2a. In the memory 3c, the urinal non-use time (Ta) indicating the frequency of use and the urinal use time (Tb) indicating the amount of urine as shown in FIG.
Data indicating the relationship c) is stored in advance. In this embodiment, in FIG. 4A, Ta1 is 5 minutes, and Ta2 is
In FIG. 4B, Tb1 is 15 seconds, Tb2 is 40 seconds, and in FIG. 4C, Tc is the opening time of the on-off valve for flowing 4 L of washing water. Note that this data was obtained by a urinal ink cleaning test, a urinal replacement test, a monitor test using an actually used urinal, and the like. As the constant flow valve 4, for example, an orifice which bends to the secondary side due to a pressure difference between the primary side and the secondary side of the fluid and changes its diameter to exhibit a constant flow rate function is used. The on-off valve 5 is, for example, a pilot-type solenoid valve using a so-called latching solenoid as an actuator, which is energized only at the time of opening / closing operation and otherwise maintains an open or closed state by a spring force or a magnetic force of a permanent magnet.
Note that an electromagnetic valve that closes when power is not supplied may be used. Further, other than the electromagnetic valve using an electromagnetic solenoid or the like, a valve having a structure in which the valve is driven by an actuator using a piezoelectric element described in Japanese Patent Application Laid-Open No. 1-223230 may be used. As the power source 6, a dry battery, a commercial power source, a generator, or the like can be used. When the dry battery is used as the power source, the power source 6 is disclosed in Japanese Patent Application Laid-Open No. 62-156451.
It is necessary to take measures such as intermittent light emission of the photoelectric sensor and control of the amount of current supplied to the electromagnetic solenoid as described in Japanese Patent Application Laid-Open No. HEI 5-157332.

The operation sequence in this configuration will be described with reference to the flowchart of FIG. When power is supplied from the power supply 6 (S1), the MPU 3b in the control unit 3 starts after resetting the timer 3d (S2), and waits for a signal from the photoelectric sensor 2 to be received, that is, a urinal failure. A time corresponding to the use time (Ta) is measured (S3). At the same time, the timer 3d is reset and started again (S4). And
The time until the signal from the photoelectric sensor 2 disappears, that is, the time corresponding to the urinal use time (Tb) is measured (S
5). The MPU 3b stores the measured urinal non-use time (Ta) and urinal use time (Tb) in the memory 3 in advance.
The open time (Tc) of the on-off valve is determined by comparing it with the data stored in c (S6), and at the same time, the on-off valve 5 is driven to the open state via the output interface 3d. As a result, the urinal 8 is started to be cleaned (S7), and waste and sewage are discharged. The MPU 3b monitors the elapsed time of the timer 3d (S8), and determines the determined time (Tc) (see FIG. 4).
Is elapsed, the on-off valve 5 is driven to the closed state, and the flushing of the urinal is completed (S9). Hereinafter, S1 to S9 are similarly repeated. In this embodiment, as shown in FIG.
Although the frequency of use is set to three levels and the amount of urine is set to three levels, the number of levels may be increased without being limited to this.

FIG. 5 is a flowchart showing the operation sequence of the toilet flushing / water supply apparatus according to the second embodiment of the present invention.
The difference from the embodiment is that the urinal usage time is measured (S
5) No operation, that is, only the fact that the amount of urine is not taken into account, the description of the operation is omitted. Incidentally, Japanese Patent Application Laid-Open
In the case of using a flow regulating valve using a proportional solenoid valve, a stepping motor or the like as described in -223230, the opening degree or the opening degree pattern may be changed instead of the opening time.

Furthermore, when a person uses a urinal, a small amount (2
By flowing water (about 1 liter), it is possible to further prevent the urinal from being polluted with filth and sewage, and to give the user a sense of cleanliness.

[00011]

According to the toilet flushing / water supply apparatus of the present invention, the opening time or opening degree pattern of the water supply valve is determined based on the data corresponding to the urinal non-use time and the urinal use time stored in advance. Since the amount of flush water corresponding to the use condition of the toilet bowl is supplied to the urinal, there is a great advantage that water can be saved while preventing odors and dirt from adhering.

[Brief description of the drawings]

FIG. 1 is a block diagram of a toilet flushing / water supply apparatus according to an embodiment of the present invention.

FIG. 2 is a block configuration diagram of a control unit of the toilet flushing / water supply apparatus according to the embodiment of the present invention.

FIG. 3 is a flowchart showing an operation sequence of the toilet flushing / water supply apparatus according to the first embodiment of the present invention.

FIG. 4 shows the relationship between the urinal non-use time indicating the frequency of use of the toilet flush water supply apparatus according to the embodiment of the present invention, the urinal use time indicating the amount of urine, and the opening time of the corresponding on-off valve. FIG.

FIG. 5 is a flowchart showing an operation sequence of the toilet flushing / water supply apparatus according to the second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Toilet flush water supply device 2 Photoelectric sensor 3 Control part 3a Input interface 3b Microprocessor (MPU) 3c Memory 3d Timer 3e Output interface 4 Constant flow valve 5 Open / close valve 6 Power supply 7 Water supply pipe 8 Urinal

────────────────────────────────────────────────── ─── Continuing on the front page (72) Shoji Inoguchi 2-1, 1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Inside Totoki Equipment Co., Ltd. (72) Susumu Susumu Nakama Nakajima, Kitakyushu-shi, Fukuoka 2-1-1 1-1 Totoki Kiki Co., Ltd. (58) Field surveyed (Int. Cl. ⁶ , DB name) E03D 5/10

Claims (1)

(57) [Claims] 1. A toilet flusher having a sensing unit for sensing use of a toilet, a control unit which operates based on a sensing signal of the sensing unit, and a water supply valve for supplying flush water to the toilet based on an output of the control unit. In the water supply device, the flow rate of water supplied from the water supply valve is determined based on a toilet non-use time.