JP4332288B2 - Urinal washing system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a flushing washing system for urinals.
[0002]
[Prior art]
There are various cleaning methods for flush toilets in public toilets and the like in which a plurality of urinals are installed. For men's urinals, the following two cleaning methods are common.
The first washing method is provided with an automatic water washing device for each urinal. This is because a human sensor using infrared rays is provided in the upper part of the toilet, and each time the urinal is used, the water supply electromagnetic valve is controlled by the signal from the human sensor to wash the urinal. is there. In general, about 5 liters of water is used for one washing of the urinal.
[0003]
A 2nd washing system is a washing system provided with a water distribution pipe which connects one end side to the water supply side, and branches and connects the other end side to each urinal, and a valve device interposed in the middle of the water distribution pipe. . According to this washing method, all urinals can be washed once at a fixed time (for example, 15 minutes). However, since the washing water is flowed only every predetermined time, the amount of washing water used per day is Relatively little.
[0004]
[Problems to be solved by the invention]
However, in the first washing method, since the washing water flows every time the urinal is used, the amount of the washing water per day is increased in a public toilet with a general usage number.
[0005]
In addition, during times when toilets are used frequently, multiple men's urinals installed in the toilet use the wash water at the same time, so the same water supply system as the men's urinals distribution system is used. The water supply pressure to other water distribution systems connected to the main may decrease. Especially in the summer when a lot of water is used, such a disadvantage due to a decrease in the water supply pressure may appear, and the water from other water distribution systems such as a girls' toilet may become worse.
[0006]
Also, in the second cleaning method, since a large amount of cleaning water is used at a time, inconvenience due to a decrease in the feed water pressure occurs as in the first cleaning method.
This invention is made | formed in view of the said matter, and makes it a technical subject to provide the urinal washing system excellent in the water-saving effect.
[0007]
Moreover, let it be a technical subject to provide the urinal washing system which prevents the pressure drop of the whole water supply system.
[0008]
[Means for Solving the Problems]
A first invention is a system for cleaning a plurality of urinals divided into a plurality of groups, and is provided for each group, wherein one end is connected to a water supply unit and the other end is a urinal belonging to a group. The distribution system to be connected, the control valve for controlling the supply of cleaning water provided in each distribution system, and the cleaning water supplied to the urinals of each group are supplied with a predetermined time difference. And a control device for controlling the control valve.
[0009]
According to a second aspect of the present invention, in the first aspect, each water distribution system includes a flow rate detection unit that detects a flow rate of the washing water that passes therethrough, and the flow rate detection unit outputs a detection signal to the control unit, and the control unit Controls each control valve based on a signal from the flow rate detection means.
[0010]
3rd invention is equipped with the water pressure detection means which outputs the detection signal to the said control apparatus while detecting the water pressure by the said water supply part side in 1st or 2nd invention, The said control apparatus is the water pressure of the water supply part side. In this case, the control valve is controlled so that the time difference of the cleaning water supply by each control valve becomes longer.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the urinal washing system of the present invention will be described in more detail with respect to the embodiment shown in FIGS. 1 and 2. In the present embodiment, a system including four urinals will be described.
[0012]
As shown in FIG. 1, the four urinals 3 installed in one toilet such as a station yard are divided into two groups of a first group 30 and a second group 40.
The distal end of the water distribution main pipe 7 that communicates the base end with the water supply main pipe side is connected to two water distribution pipes. One is the first water pipe 8 a corresponding to the first group 30, and the other is the second water pipe 9 a corresponding to the second group 40.
[0013]
The first water distribution pipe 8a has one end connected to the water distribution main pipe 7 and the other end connected to the first water distribution branch pipes 8b and 8b for supplying washing water to the urinals 3a and 3a of the first group 30. Yes.
The second water distribution pipe 9a has one end connected to the water distribution main pipe 7 and the other end connected to second water distribution branch pipes 9b and 9b for supplying washing water to the urinals 3b and 3b of the second group 40. is doing.
[0014]
The first water distribution branch pipes 8b and 8b and the second water distribution branch pipes 9b and 9b communicate with a water supply passage formed in the urinal 3.
A first control valve unit 11 that controls supply and stop of water supply in the direction of the urinal 3 is interposed in the middle of the first water distribution pipe 8a. The first control valve unit 11 includes a first electromagnetic valve 12, and the first electromagnetic valve 12 is opened and closed by a command from the control device 20.
[0015]
Moreover, the 1st control valve unit 11 is provided with the 1st flow volume detection part 12 which detects the flow volume of the washing water which passes the inside of the 1st water distribution pipe 8a. The first 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 20 receives a pulse signal transmitted every rotation of the impeller.
[0016]
A second control valve unit 21 having the same configuration as the first control valve unit 11 provided in the first water distribution pipe 8a is also interposed in the middle of the second water distribution pipe 9a. The second control valve unit 21 is also provided with a second electromagnetic valve 22 and a second flow rate detector 23.
[0017]
Here, the configuration of the control device 20 will be described. The control device 20 outputs a signal to the electromagnetic valves of the first control valve 11 and the second control valve 12 and inputs a signal from the first flow rate detection unit 12 and the second flow rate detection unit 22; 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 microprocessor, and a bus for connecting them are provided.
[0018]
Next, the operation of this system will be described based on the flowchart of FIG.
When the present system is activated, the control device 20 determines whether or not a predetermined time S (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.
[0019]
In step S102, the control device 20 outputs an instruction signal to the first electromagnetic valve 12 of the first control valve unit 11, opens the first electromagnetic valve 12, and supplies the cleaning water of the water distribution main pipe 7 to the water distribution pipe 8a. To the two urinals 3a, 3a of the first group 30 through the water distribution branch pipes 8b, 8b. At this time, when the control device 20 determines that a predetermined flow rate (for example, 6 liters) has passed through the first control valve unit 11 based on a signal from the first flow rate detection unit 13 of the first control valve unit 11, The first electromagnetic valve 12 is closed to stop the supply of washing water to the urinals 3a and 3a. In this case, since there are two urinals 3 belonging to the first group 30 (communicating with the water pipe 8a), washing water of 3 liters is supplied to one urinal 3a.
[0020]
Next, in step S103, the control device 20 determines whether or not the water pressure on the water supply unit 7 side is equal to or greater than a predetermined pressure value based on the signal from the water pressure detection unit 60. If the water pressure is greater than or equal to the predetermined pressure value, the process proceeds to step S104, and if the water pressure is less than the predetermined pressure value, the process proceeds to step S105. In step S104, it is determined whether or not a preset time t (for example, 1 minute) has elapsed, the positive branch moves to step S106, and the negative branch circulates in step S104.
[0021]
In step S105, it is determined whether or not a preset time T (for example, 3 minutes) longer than time t has elapsed. The affirmative branch moves to step S106, and the negative branch circulates in step S105. .
[0022]
In step S106, as in the case of the first group 30, the control device 20 outputs an instruction signal to the second electromagnetic valve 22 of the second control valve unit 21, and opens the second electromagnetic valve 22. The washing water of the water distribution main pipe 7 is supplied from the water distribution pipe 9a to the two urinals 3b and 3b of the second group 40 through the water distribution branch pipes 9b and 9b. At this time, when the control device 20 determines that a predetermined flow rate (for example, 6 liters) has passed through the second control valve unit 21 based on a signal from the second flow rate detection unit 23 of the second control valve unit 21, The second electromagnetic valve 22 is closed to stop the supply of washing water to the urinals 3b and 3b. Also in this case, since there are two urinals 3 belonging to the second group 40 (communicating with the water pipe 9a), washing water of 3 liters is supplied to one urinal 3b.
[0023]
The subsequent stage of step S106 is the circulation routine of step S101.
As described above, according to the urinal washing system of the present embodiment, since the plurality of installed urinals are not washed at a time, the water pressure on the water supply unit 7 side does not extremely decrease, The possibility of inconvenience occurring in other equipment using water can be suppressed.
[0024]
Moreover, since the washing waiting time between one group and the other group can be changed according to the water pressure on the water supply unit 7 side, the probability that the flushing water of the urinal will be used when the water pressure is low, The number of urinal washings per unit time can be greatly reduced without reducing.
[0025]
In addition, only one urinal may belong to one group, or three or more urinals may belong, and the urinal grouping is not limited to two groups, but may be any number of groups of three or more. You can also.
[0026]
In the present embodiment, the urinals are washed every predetermined time. However, for example, in a time zone where the number of users is small, the number of times the same urinal is washed per unit time is set to be small. May be.
[0027]
In addition, a human sensor is provided at the entrance of the toilet facility, and a signal from the human sensor is output to the control device 20 so that the same urinal (the same group) is provided per unit time according to the number of people using the toilet facility. You may make it change the frequency | count of washing.
[0028]
Furthermore, the amount of water used for washing per urinal may be changed every washing. That is, the system uses 3 liters of water for the first wash, 1.5 liters for the second wash, and 3 liters for the third wash. It can also be set to a more water-saving effect while maintaining a feeling of feeling and coolness.
[0029]
Moreover, you may make it provide the water pressure detection part 60 on the water distribution system of other water use facilities (for example, girls' toilet).
[0030]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the urinal washing system excellent in the water-saving effect can be provided.
[0031]
Moreover, the urinal washing system which prevents the pressure drop of the whole water supply system can be provided.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overall configuration of a toilet flushing system according to an embodiment of the present invention. FIG. 2 is a diagram showing a control flow centering on a control device according to the embodiment.
3 Urinal 7 Water supply section 8a Water distribution pipe 8b Water distribution branch pipe 9a Water distribution pipe 9b Water distribution branch pipe 11 First control valve unit 12 First electromagnetic valve 13 First flow rate detection unit 20 Controller 21 Second control valve unit 22 Second electromagnetic Valve 23 Second flow rate detector 30 First group 40 Second group

Claims (2)

A system for cleaning a plurality of urinals divided into a plurality of groups,
A water distribution system provided for each group, one end connected to a water supply unit and the other end connected to a urinal belonging to the group;
A control valve provided in each water distribution system for controlling the supply of washing water;
A control device that controls each control valve so that the wash water supplied to the urinals of each group is supplied with a predetermined time difference;
Water pressure detecting means for detecting the water pressure on the water supply unit side and outputting a detection signal to the control device ,
Wherein the control device, if the pressure of the water supply side is decreased, urinal cleaning system the time difference of the cleaning water supply by the control valve is characterized that you control each control valve to be longer. Each water distribution system includes a flow rate detection means for detecting the flow rate of the wash water that passes through,
This flow rate detection means outputs a detection signal to the control device,
2. The urinal washing system according to claim 1, wherein the control device controls the control valves based on a signal from the flow rate detecting means.

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