JPH03221630A - Automatic flushing apparatus with antifreezing function - Google Patents

Abstract

PURPOSE:To intermittently supply antifreezing water to save flush water by providing a timer circuit for controlling a flush valve to be opened and closed on every preset time regardless of detecting a human body, and an antifreezing switch for controlling the connection and disconnection of the circuit. CONSTITUTION:A human body detecting sensor 2 for detecting a user, a flush valve 3 disposed in the midway of a flush water feed pipeline 6 connected to an urinal, and a control circuit 14 to which a detection signal of the human body detecting sensor 2 is input to output an open/close signal to the flush valve 3 are formed on an apparatus 10. Further, a timer circuit 15 for controlling the flush valve 3 to be opened and closed on every preset time regardless of detecting the human body and a human body detecting circuit 19 for controlling the flush valve 3 to be opened and closed according to the detection of the human body are incorporated in the control circuit 14, and an antifreezing switch 16 for on-off controlling the timer circuit 15 is connected to the circuit 14. When the switch 16 is selected to turn on, the flush valve is opened intermittently regardless of detecting the human body to conduct antifreezing flushing.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an improvement in which an antifreeze function is added to an automatic cleaning device that controls opening and closing of a cleaning valve by detecting a human body. Typical automatic washing devices of this type include those installed in urinal facilities and those installed in hand wash facilities. (Prior art 1) As shown in FIG. 5, an automatic cleaning device 1 installed in a urinal facility includes a human body detection sensor 2 for detecting a user, and a cleaning device installed in the middle of a cleaning water supply pipe 6 of a urinal 5. Valve 3
and a control circuit 4 that inputs the detection signal of the human body detection sensor 2 and outputs an opening/closing signal to the cleaning valve 3. Although not shown, the automatic cleaning device installed in the handwash facility includes a human body detection sensor that detects the user's hand held out to the handwash, and a cleaning valve installed in the middle of the water supply pipe connected to the faucet. and a control circuit that inputs a detection signal from a human body detection sensor and outputs an opening/closing signal to a cleaning valve.

[Problems to be Solved by the Invention] Conventionally, there has been no automatic cleaning device equipped with an antifreeze function. Therefore, measures to prevent freezing are necessary in cold regions. As a measure to prevent freezing, the residual water remaining in the washing water supply and drainage channel from the water supply pipe to the drainage channel via the urinal or wash basin should be discharged to a freeze-free zone such as underground, or a small amount of water should be poured into this washing water supply and drainage channel. There is a way to do this by constantly running water. However, draining the residual water requires a lot of effort, and constantly flowing water has the problem of increasing the amount of wasted washing water. The above problem is particularly serious in public facilities equipped with a large number of urinals and wash basins. SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention aims to provide an automatic cleaning device having an antifreeze function that intermittently supplies antifreeze water. [Means for solving the problem] An automatic cleaning device with an antifreeze function according to the present invention (hereinafter referred to as “
The means adopted by the device of the present invention is an automatic cleaning device equipped with a control circuit that opens and closes the cleaning valve based on human body detection, and controls the opening and closing of the cleaning valve at set times regardless of human body detection. It is equipped with a timer circuit and an antifreeze switch that turns the timer circuit ON/OFF. [Operation] When the anti-freeze switch is turned on during freezing, the timer circuit is activated and controls the opening and closing of the cleaning valve at set times, regardless of human body detection. In the washing water supply and drainage channels of urinal equipment or handwash equipment, antifreeze water flows intermittently by opening and closing the washing valve to prevent freezing. When the antifreeze switch is turned OFF, the timer circuit does not operate and normal automatic cleaning control is performed.

【Example】

The apparatus of the present invention will be explained based on embodiments shown in the drawings. (First Embodiment) Fig. 1 is a block diagram showing a first embodiment of the present invention device installed in a urinal facility, and Fig. 2 shows the control of the same embodiment! 1lv
It is a flowchart showing J work. The device 10 of the present invention cleans by inputting a human body detection sensor 2 that detects a user, a cleaning valve 3 provided in the middle of a cleaning water supply pipe 6 connected to a urinal, and a detection signal from the human body detection sensor 2. The control circuit 14 outputs an opening/closing signal to the valve 3 for use. This control circuit 114 incorporates a timer circuit 15 that controls the opening and closing of the cleaning valve 3 at set time intervals regardless of human body detection, and a human body detection circuit 19 that controls the opening and closing of the cleaning valve 3 based on human body detection. Turn 15 ON/OFF! Connect the anti-freeze switch 16 until it stops. A power supply circuit 17 is connected to the control circuit 14 and the cleaning valve 3, respectively. The control circuit 14 operates as shown in FIG. First, when the control circuit f114 receives a start command using a push button switch or the like, it resets each of the timer flag of the timer circuit 15 and the human body flag of the human body detection circuit 19 to the O state, and then checks whether the freeze set is set. do. When it is confirmed that the freeze setting is present (that is, the timer switch 16 is in the ON state), the timer circuit 15 starts the timer body provided at this timer circuit f115 and sets the timer flag to 1 since the timer flag is in the O state.
After the state is set, a signal is output to the human body detection circuit 19. Next, when it receives a return signal from the human body detection circuit 19, which will be described later, it confirms that the freeze set is present again.However, since the timer flag of the timer circuit 15 is 1, when 1m [T] has elapsed since the timer start in 677, Compare with the set time value S. When the elapsed time value lower does not exceed the set time value S (T<8>, a signal is output as is to the human body detection circuit 19, and conversely, when the elapsed time value lower is equal to or greater than the set time value S (T≧ S) instructs antifreeze cleaning, resets the timer body, sets the timer flag to O state, and then outputs a signal to the human body detection circuit 19.The setting R darkness value S is the atmosphere of the urinal facility. The timer circuit 15 repeats the above routine upon receiving a return signal from the human body detection circuit 19. When antifreeze cleaning is commanded from the timer circuit 15, the cleaning The valve 3 (see Figure 1) is opened for a set time and supplies flushing water to the urinal via the flushing water supply pipe 6.The supplied flushing water is prevented from freezing by flowing water.Control circuit 14 When it is confirmed that there is no freeze set (that is, the antifreeze switch 16 is in the OFF state), the human body detection circuit 19
Output the signal directly to the The human body detection circuit 19, to which the output signal of the timer circuit 15 is first input after the start command, detects a human body based on the detection signal from the human body detection sensor 2 (that is, there is no user in front of the urinal). When this is confirmed, the reset human body flag is in the O state, so the signal is returned to the timer circuit 15. The human body detection circuit 19 receives the signal from the timer circuit 15 again, and when it confirms that the human body has been detected as YES (that is, there is a user in front of the urinal), the human body flag is set to O, so the human body flag is set to 1. After instructing pre-cleaning, a signal is returned to the timer circuit 15. The cleaning valve 3 (see Figure 1) that receives the command for preliminary cleaning opens for a set time and supplies preliminary cleaning water to the urinal via the cleaning water supply piping 6. Perform cleaning. The human body detection circuit 19 in use confirms that the human body has been detected as YES, and the human body flag is in the state of 1, so the signal is sent to the timer circuit 15.
Repeat the routine that returns to . When the errand is finished and the user is gone, the human body detection circuit 19 switches human body detection to N.
o, and since the human body flag is in the state of 1, the human body flag is set to the state of O, the main cleaning is commanded, and the timer circuit 1 is activated.
After resetting the timer body of No. 5 and setting the timer flag to the O state, the signal is returned to the timer circuit 15. Here, the reason why the timer reset and timer flag are set to O is that the main cleaning can be substantially regarded as antifreeze cleaning. The cleaning valve 3 (see FIG. 1) that receives the main cleaning command opens for a set time and supplies main cleaning water to the urinal via the cleaning water supply pipe 6. As described above, in the device 10 of the present invention, when the antifreeze switch 16 is turned ON during the freezing period, the timer circuit 15 is activated and the cleaning valve 3 is opened intermittently for a set time regardless of human body detection to prevent freezing. Perform preventive cleaning to prevent urinal equipment from freezing. Note that since preliminary cleaning is not essential, the preliminary cleaning command may be omitted. <Second Embodiment> FIG. 3 is a block diagram showing a second embodiment of the present invention device installed in a hand washing facility, and FIG. 4 is a flowchart showing the control operation of the same embodiment. The device 20 of the present invention includes a human body (hand) detection sensor 2 that detects a user's hand held out below a faucet 27 of a handwash basin 25.
2, a cleaning valve 23 provided in the middle of the cleaning water supply pipe 26 connected to the faucet 27, and a control circuit 34 that inputs the detection signal of the human body detection sensor 22 and outputs an open/close signal to the cleaning valve 23. We are prepared. This control circuit 34 is
A timer circuit 35 that controls the opening and closing of the cleaning valve 23 at set times regardless of human body detection and a human body detection circuit 39 that controls the opening and closing of the cleaning valve 23 based on human body detection are incorporated, and the timer circuit 35 is controlled to turn on and off. The anti-freeze switch 36 is connected. A power supply circuit 37 is connected to the control circuit 34 and the cleaning valve 23, respectively. Note that the contents of the timer circuit 35 are substantially the same as the timer circuit 15 in the first embodiment, so a description thereof will be omitted. The 1iii111 circuit 34 operates as shown in FIG. 4, but the difference from the first embodiment is that the human body detection circuit 34 operates as shown in FIG.
It is 9. When the output signal of the timer circuit 35 is input, the human body detection circuit 39 sets the human body (hand) detection to NO (i.e., a state in which water spouting is not required) based on the detection signal from the human body (hand) detection sensor 22. If confirmed, a signal is returned to the timer circuit 35 after commanding to stop cleaning. The human body detection circuit 39 receives a signal from the timer circuit 35 again, and when it confirms that the human body (hand) is detected as YES (i.e., a state that requires water spouting), it issues a command to maintain cleaning (faucet water spouting), and □ timer circuit After resetting the timer body 35 and setting the timer flag to the O state, the signal is returned to the timer circuit 35.The cleaning valve 23 (see Fig. 3), which received the command to maintain cleaning, opens the valve. The valve remains open until the command to stop the cleaning is received. When the antifreeze switch 36 is turned ON during the freezing season, the timer circuit 35 is activated to protect the human body (
Hand) The washing valve 23 is opened intermittently for a predetermined period of time regardless of the detection to perform antifreeze washing and prevent the handwash equipment from freezing. Effects of the Invention 1 As detailed above, in the device of the present invention, when the antifreeze switch is turned ON during the freezing period, the timer circuit is activated and the cleaning valve is intermittently turned on for a predetermined period of time regardless of human body detection. When the valve is opened, antifreeze cleaning is automatically performed to prevent equipment from freezing. As a result, the device of the present invention eliminates the need for draining residual water, which saves labor, and minimizes the amount of washing water required to prevent freezing, resulting in water savings. have an effect.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a first embodiment of the device of the present invention, FIG. 2 is a flowchart showing the control operation of the same embodiment, and FIG.
FIG. 4 is a block diagram showing a second embodiment of the apparatus of the present invention, FIG. 4 is a flowchart showing the control operation of the same embodiment, and FIG. 5 is a diagram showing a conventional automatic cleaning device. 3 (23)...Cleaning valve 14 (34)...Control circuit 15 (35)...Timer circuit 16 (36)...Anti-freeze switch Fig. 3 Fig. 4

Claims (1)

[Claims] 1. In an automatic cleaning device equipped with a control circuit that opens and closes a cleaning valve based on human body detection, a timer circuit that controls opening and closing of the cleaning valve at set time intervals regardless of human body detection, and a timer circuit that turns on/off the cleaning valve. An automatic cleaning device with an antifreeze function, characterized in that it is equipped with an antifreeze switch that controls OFF.