JP2009074313A - Urinal flushing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a urinal flushing system which can establish compatibility between water saving and cleanliness. <P>SOLUTION: This urinal flushing system comprises: a person detector 6 for detecting a user of a urinal 3; a control valve 2 for controlling flushing water; a flow rate detector 12 for detecting the flow rate of the flushing water; and a control device 5 which receives information from the person detector 6 and the flow rate detector 12 and which outputs an instruction signal into a control valve 2. The control device 5 gives instructions on the discharge of a first set quantity of water to the control valve 2 after a lapse of a first set period of time after the first set quantity of water is supplied into the urinal 3 from the control valve 2. The control device 5 gives instructions on the discharge of a second set quantity of water smaller than the first set quantity of water to the control valve 2, when the number of times of the use of the urinal after the supply of the first set quantity of water into the urinal 3 from the control valve 2 is smaller than the first set number of times in the detection of the use of the urinal 3. The control device 5 gives the instructions on the discharge of the first set quantity of water to the control valve 2 when the number of times of the use of the urinal after the supply of the first set quantity of water into the urinal 3 from the control valve 2 is the first set number of times or larger. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a flushing washing system for urinals.

  There are various flushing systems for flush toilets, but for men's urinals, those equipped with an automatic flushing device are common. In this system, a human sensor using infrared light is provided on the upper part of the urinal, and the water supply electromagnetic valve is controlled and cleaned each time the urinal is used by a signal from the human sensor. In general, about 5 to 6 liters of water is used for one cleaning of the urinal.

  This method is excellent in cleaning effect because it is automatically washed with water every time it is used. In addition to this method, there is a method in which the urinal is washed by controlling the water supply electromagnetic valve at regular intervals (for example, about 10 to 15 minutes). In this method, since cleaning is performed at a specific time, the amount of cleaning water is small as a total, and there is an advantage that a refreshing feeling can always be maintained even when there are few users.

  However, the above-described conventional cleaning apparatus has a problem specific to each method. In other words, the method of washing each time the former is used can quickly and reliably wash away urine and the like, but when the use of a urinal is used, about 5 liters of water is required each time it is used. There is a problem that a large amount of water is wasted and lacks economic efficiency.

On the other hand, in the latter method of cleaning at regular intervals, there is a problem that the refreshing feeling is lacking because the cleaning becomes insufficient when the use of the urinal is conspicuous.
As a cleaning system that solves these problems, a system that combines the advantages of both types has been considered.

That is, a first control valve that supplies a relatively small amount of washing water to the urinal every time the urinal is used and a second control valve that supplies an amount of washing water that can completely wash the urinal at regular intervals are provided. Cleaning system (see Patent Document 1).
Japanese Unexamined Patent Publication No. 7-18718

The inventors of the present application have found a point to be further improved as a result of intensive research on a urinal cleaning system that combines the advantages of both the above-described methods. That is, it is about improvement of water-saving efficiency in the zone where the cleaning operation for each use and the cleaning operation for every fixed time are close. In addition, the inventors of the present application have focused on improving the urinal cleaning system and the peripheral device maintenance performance, which combine the advantages of both types.
This invention is made | formed in view of the said matter, and makes it a subject to provide the urinal washing system which can make water saving and a clean feeling compatible. It is another object of the present invention to provide a urinal washing system that can achieve both water saving and cleanliness and can suppress deterioration of the drain pipe.

A first invention is a system for cleaning a urinal, and includes a human detection device that detects a user of the urinal, a control valve that controls wash water supplied to the urinal, and a control valve that passes through the control valve. A flow rate detection device that detects the flow rate of the wash water, and a control device that receives the human detection information from the human detection device and the flow rate detection information from the flow rate detection device and outputs an instruction signal to the control valve, The control device instructs the control valve to discharge the first set water amount when a first set time elapses after the first set water amount is supplied from the control valve to the urinal, and detects the use of the urinal In addition, when the number of times of use of the urinal after the first set amount of water is supplied from the control valve to the urinal is less than the first set number of times, the control valve discharges the second set amount of water smaller than the first set amount of water. The first set water amount from the control valve is urinal Urinal usage count after being supplied is equal to or larger than the first set number was urinal cleaning system for instructing discharge of the first set amount of water to the control valve.

  In a second aspect based on the first aspect, when the control device detects use of a urinal, the control device counts the number of times the urinal is used after the first set amount of water is supplied from the control valve to the urinal. If the second set number is less than the first set number and less than the first set number and is between the second set time and the first set time, which is shorter than the first set time, the first set water amount This was a urinal washing system for instructing the control valve to discharge. Here, for example, the second set time is obtained by multiplying the first set time by a value p obtained by dividing the second set water amount by the first set water amount, and further obtaining the value s from the first set time. You can get reduced.

  ADVANTAGE OF THE INVENTION According to this invention, the washing | cleaning system for urinals excellent in a clean feeling and a water-saving effect can be provided.

  Hereinafter, the urinal washing system of the present invention will be described in more detail with respect to the embodiment shown in FIGS.

  As shown in FIG. 1, a urinal 3 installed in a toilet such as a station premises has a base end connected to a water distribution pipe 4 that communicates with the water supply main 1 side.

  A control valve unit 2 that controls supply and stop of water supply in the direction of the urinal 3 is inserted in the middle of the drain pipe 4. The control valve unit 2 includes an electromagnetic valve, and performs water supply control by opening and closing the electromagnetic valve according to a command from the control device 5.

  The control valve unit 2 includes a flow rate detection unit 12 that detects the flow rate of the washing water that passes through the water distribution pipe 4. The flow rate detection unit 12 has a rotary impeller driven by a water flow passing through the pipe, and the passage flow rate can be detected by detecting the rotational speed of the rotary impeller. The passage flow rate is calculated based on the number of revolutions per unit time when the control device 5 receives a pulse signal transmitted every rotation of the impeller.

  In addition, as a flow volume detection part, it can also be set as the structure only of a timer part, without providing a rotary impeller. That is, the flow rate passing through the control valve unit 2 per unit time is calculated in advance, and the electromagnetic valve is opened for a time corresponding to the scheduled flow rate.

  Here, the configuration of the control device 5 will be described. The control device 5 outputs a signal to the solenoid valve of the control valve unit 2 and inputs a signal from the flow rate detection unit 12 and the human detection sensor 6, a microprocessor for performing various data processing, A RAM (randum access memory) and a ROM (read only memory) for storing data necessary for operating the processor, and a bus connecting them are provided.

Next, the operation of this system will be described based on the flowcharts of FIGS.
When the present system is activated, as shown in FIG. 2, the control device 5 determines whether or not a first set time T1 (for example, 15 minutes) set in advance has elapsed (step S101). The affirmative branch of step S101 moves to step S102, and a negative branch repeats the process of step S101.

  In step 102, the control device 5 outputs an instruction signal to the electromagnetic valve of the control valve unit 2, opens the electromagnetic valve, and supplies the flush water of the water distribution pipe 4 to the urinal 3. At this time, when the control device 5 determines that the first set flow rate (for example, 5 liters) has passed through the control valve unit 2 based on the signal from the flow rate detection unit 12 of the control valve unit 2, It closes and the supply of the washing water to the urinal 3 is stopped. And the control apparatus 5 updates the time t to 0 in step 103, and repeats the process from step 101. FIG. That is, the control device 5 supplies 5 liters of washing water to the urinal 3 every 15 minutes.

Next, the operation of this system will be further described based on the flowchart of FIG.
The control device 5 determines whether or not the user is located in front of the urinal 3 by sensing a signal from the human detection sensor 6 (step 201). For example, when the human detection sensor 6 detects an object (person) within a predetermined range in front of the urinal 3 for 5 seconds, the control device 5 determines that the user has been detected and simply passes in front of the urinal 3. This prevents malfunctions such as detecting a person who has performed the operation.

  When the control device 5 determines that the urinal 3 is being used, “1” is added to the number n of use of the urinal 3 to obtain a new count value n (step 202). Then, the control device 5 determines that the urination has been completed in response to the stop of the signal from the human detection sensor 6 (step 203).

  Next, the control device 5 determines whether or not the count value n obtained in step 202 has reached a first set number N1 (for example, 10 times) that is a preset number (step 204). When the count value n is the first set number of times N1, the control device 5 proceeds to Step 208 and sets the control valve unit 2 to supply the first set water amount (for example, 5 liters) to the urinal 3. Control. Then, the count value n is returned to 0 (step 209), and the elapsed time t is returned to 0 (step 210).

  If the count value is not N1 in step 204, the process proceeds to step 205, and it is determined whether or not it is equal to or greater than a second set number N2 (for example, nine times) that is a preset number. When the count value n is less than the second set number N2 (for example, 8 times or less), the control device 5 supplies a relatively small amount of the second set water amount (for example, 1 liter) to the urinal 3. The electromagnetic valve of the control valve unit 2 is controlled (step 206).

  On the other hand, if the count value n is greater than or equal to N2 (for example, 9 times) in step 205, the process proceeds to step 207, and the elapsed time t is further determined. The control device 5 determines that the time t that has elapsed after the first set amount of water is supplied to the urinal 3 is greater than or equal to the second set time (for example, 14 minutes) and less than the first set time (for example, 15 minutes). In the case (positive branch of step 207), the solenoid valve of the control valve unit 2 is controlled so that the first set water amount (5 liters) is supplied to the urinal 3 (step 208). Then, the count value n is returned to 0 (step 209), and the elapsed time t is returned to 0 (step 210).

  If the elapsed time t is not less than the first set time and not less than the first set time in Step 207 (that is, if it is less than the second set time, for example, 10 minutes), the control device 5 The electromagnetic valve of the control valve unit 2 is controlled so that the second set water amount (for example, 1 liter) is supplied to the urinal 3 by shifting.

Then, the subsequent stage of step 206 and step 210 loops to step 201.
As described above, according to the urinal washing system of the present embodiment, a small amount of washing water is flowed each time the urinal 3 is used to maintain a clean feeling, and a sufficient amount of water is allowed to flow to the urinal 3 at regular intervals. Perform reliable cleaning.

  Furthermore, according to this urinal cleaning system, when the user stands up, even if the set time is slightly less, the amount of cleaning water after defecation is set to a sufficient amount (5 liters), Since the elapsed time t is added up again, it is possible to prevent the wash water from being discharged (for example, within 1 minute (1 + 5 liters)) within a short time, and to reduce the amount of water used when viewed over a long period of time. it can. In addition, even if the urinal cleaning system does not reach the set time, a sufficient amount of water is supplied to the urinal 3 when a certain number of times of use is reached, so that residual urine in the drain pipe connected to the urinal 3 Before reaching a substantially constant amount (remaining urine amount for a predetermined number of people), it can be discharged to the drain main, and the deterioration of the drain can be suppressed while maintaining the water-saving effect.

  In the present embodiment, the urinals are washed every predetermined time. However, the first set time may be set longer in a time zone where the number of users is small, for example. Further, the first set number of times can be set to an arbitrary number of times, for example, 20 times or 30 times.

The block diagram of the urinal washing system in embodiment of this invention. The 1st flowchart figure in the control apparatus of this embodiment. The 2nd flowchart figure in the control apparatus of this embodiment.

Explanation of symbols

2 Control valve unit 3 Urinal 5 Control device 6 Human detection sensor 12 Flow rate detector

Claims (2)

A urinal cleaning system that detects the user of a urinal, a control valve that controls the wash water supplied to the urinal, and the flow rate of the wash water that passes through the control valve A flow rate detection device, and a control device that receives the human detection information from the human detection device and the flow rate detection information from the flow rate detection device and outputs an instruction signal to the control valve,
The control device instructs the control valve to discharge the first set water amount when a first set time elapses after the first set water amount is supplied from the control valve to the urinal.
When the use of the urinal is detected, if the number of times the urinal is used after the first set amount of water is supplied from the control valve to the urinal is less than the first set number of times, the second amount smaller than the first set amount of water is used. When the control valve is instructed to discharge the set amount of water, and the first set water amount is supplied from the control valve to the urinal, the number of times the urinal is used is equal to or greater than the first set number of times, the first set water amount is discharged. Urinal washing system that instructs the control valve.   When the control device detects use of the urinal, the number of times the urinal is used after the first set amount of water is supplied from the control valve to the urinal is greater than the second set number of times less than the first set number of times. 2, when the second set time is shorter than the first set time and between the first set time and the first set time, the control valve is instructed to discharge the first set water amount. The described urinal washing system.

Images