JP4479481B2 - Stagnant water retention detection system - Google Patents

Description

  The present invention relates to a stagnant water retention detection system. Specifically, while detecting the staying time of the staying water staying between the water purifier installed in the pipe of the water pipe and the faucet (faucet), it is possible to notify the staying time information (staying information). The relationship between the faucet and the staying information can be linked by relating the clearing of the staying information to the opening of the faucet.

  In recent years, health-oriented trends have increased and there has been considerable interest in drinking water. As a result, drinking water purifiers have been installed in homes and the like.

  This water purifier is equipped with a filter such as activated charcoal inside, and disinfects and dechlorinates by decomposing and removing mold and carcinogenic trihalomethane starting with chlorine components contained in tap water. It is. Since water purifiers are used not only in business facilities but also in homes, only the use in homes will be described below.

  Depending on where the water purifier is installed in the water pipes installed on the premises of the house, a central method and an individual method can be considered. FIG. 15 shows an installation example of a water purifier applied to a centralized centralized water purification system.

  In FIG. 15, a household water pipe is drawn into the site from a water pipe (base pipe) 14 embedded in the road 12. A water meter 16 is installed at an appropriate location within the site. The water pipe 18 ahead of the water meter 16 is branched and drawn into a faucet installation location in the house 20. Normally, faucets 28 (28a to 28e) are attached to the ends of water pipes (drawing pipes that are branch pipes) 22a to 22e drawn into the kitchen, bathroom, toilet, washroom, and garden pan, respectively.

  Thus, when the water pipe 18 is branched and piped, it is concentrated by attaching the water purifier (water purification device) 24 to the water pipe (water main before branching) 18a immediately after the water meter 16 is installed. It becomes a water purification system.

  In this way, if the water purifier 24 is installed in the pipe of the water main 18a before branching from the water purifier 24, all the tap water flowing out of the water purifier 24 becomes purified tap water, so almost all water Fresh water can be supplied through the plug 28.

  By the way, recently, a rich and relaxed lifestyle habit has been acquired, and a tendency to enjoy a vacation for a relatively long period of time by taking a vacation or the like is becoming stronger. For this reason, there have been many cases in which the user is away from home continuously for a week or 10 days. On the other hand, because the nuclear family is progressing, during the vacation period, other people will not visit and use the house, so the water supply may not be used at all for a relatively long time. .

  As described above, since the water purifier 24 is dechlorinated inside, when the water purifier 24 is installed, the tap water on the downstream side (the faucet 28 side) of the water purifier 24 contains a chlorine component. Not. Even if it is contained, it is a trace amount. As a result, the tap water (stagnation water) accumulated from the water purifier 24 to the faucet 28 has become a problem.

  As described above, if the tap water is retained in the pipe line from the water purifier 24 to the faucet 28 for a long time, it is considered that the retained water is easily unhygienic because the germs easily propagate. .

  Therefore, especially in the case of a centralized centralized water purification system, since the piping distance L (La + Lb in FIG. 16) from the water purifier 24 to the faucet 28 is long, the amount of retained water increases accordingly, so You must try to use it as drinking water after it is completely discarded.

  Since the stagnant water does not contain any chlorine component, there is a risk that various germs may grow. In recent years, purified tap water, especially silver, which has a bactericidal action against stagnant water, is added in small amounts (elution). ) Is also considered (for example, Patent Document 1).

Japanese Patent Laid-Open No. 11-57691 (FIG. 1)

  By the way, in the water purification process which elutes and adds the metal which has a bactericidal action with respect to stagnant water like patent document 1, since the sterilization effect in stagnant water goes up certainly, it drinks as it is without throwing away stagnant water. However, there is no problem.

  However, to that end, a silver elution tank must be prepared, and a control unit for detecting stagnant water and eluting a very small amount of silver components must be prepared. Therefore, considering the space for installing the equipment, the initial input cost of the equipment and its installation work cost, maintenance including metal replenishment, etc., such a purification system can be permanently installed in all water purifiers. Is hard to say.

  Therefore, under the responsibility of the installation household (customer), it is absolutely necessary to have the work to throw away the accumulated water. However, in fact, even if the accumulated water is thrown away, the amount of discarded water becomes tap water that does not contain accumulated water. It often happens that this waste water work is repeated because of the lack of contact. This is extremely uneconomical for limited water resources.

  Further, a plurality of faucets 28 are installed in the house 20. A faucet is always installed in the bathroom and washroom, including the kitchen. Of these, there are many kitchen faucets and faucets used for drinking. Even if the faucet used first by the person who came home is either a kitchen or a washroom, not all of them are used at the same time, so notice the wastewater treatment and perform the wastewater treatment with the faucet used first In most cases, the waste water treatment is not performed using other faucets.

  For this reason, the remaining water remains in the water pipe (lead pipe) that guides water to the remaining faucet. For example, when waste water treatment is performed using the faucet 28c in FIG. 15, the accumulated water staying between the toilet and the drawing pipe 22a from the toilet to the kitchen remains as it is. There is no complete wastewater treatment. In the case shown in FIG. 16, since the kitchen is in a deep place, the kitchen branch pipe 22a is also relatively long, which is more influential than FIG.

  Therefore, the present invention solves such a conventional problem, and particularly detects the residence time of the accumulated water between the water purifier and the faucet installed in the water pipe, By making it possible to notify the stay information, clearing the stay information is related to the opening of the faucet, and the staying information is displayed as it is on the display means related to the faucet that is not in use. The present invention proposes a stagnant water retention detection system that can reliably determine whether or not wastewater treatment has been performed.

In order to solve the above-mentioned problem, the stagnant water retention detection system according to the present invention described in claim 1 is provided on the water purifier body of the centralized centralized water purification system or on the outlet side of the water purifier , and is in a water flow state. a water purifier side water passage detecting means for detecting the residence for generating the retention information by measuring the residence time of the accumulated water staying in the water pipe on the basis of the water flow state detected by the water purifier side water flow detection means and measurement means, provided in the vicinity of the faucet mounted to the end of the water pipe, and a display means for displaying the accumulated information generated by staying measuring means, the residence information displayed on the display unit, faucet It is characterized by being cleared by opening the plug.

  In this invention, the water purifier is provided after the water meter. A water purifier side water flow detection means is provided on the main body of the water purifier or on its outlet side. From the water purifier side water flow detection means, water flow detection output accompanying opening and closing of the water tap can be obtained. Since the tap water does not flow after the faucet is stopped, the tap water stays between the water purifier and the faucet. Therefore, the residence time of the accumulated water is measured using the detection output (stop detection output) from the stoppage of the faucet to the next opening of the water passage detection output. This residence time is a continuous time from when the faucet is stopped to when it is next opened. When the faucet is opened, this residence time is reset (cleared).

  Residence time is displayed in days and hours. When the residence time has passed for one day or more (first residence time), it is displayed on the display means (the faucet side terminal device). It is not necessary to install the faucet side terminal device on every faucet. In particular, it is installed in connection with faucets that have a high probability of being used for drinking. Usually a kitchen and a washroom. Since a faucet in a bathroom is rarely used, a faucet side terminal device is installed in association with the faucet for a bathroom.

  When the residence time reaches a predetermined time (first residence time), the residence time is displayed on the faucet side terminal device. When a second residence time longer than the first residence time has elapsed, a warning indicator lamp (warning display means) is blinked.

  This warning display prompts the waste water treatment. When a specific faucet is opened and wastewater treatment is performed, the staying information related to that faucet is cleared, and the staying time display and warning display disappear. For example, if you use a toilet faucet to dispose of wastewater, you can stop (or open) the faucet, and the terminal on the faucet side will also warn you of the staying time. The display disappears. However, other faucet-side terminal devices, for example, faucet-side terminal devices installed in the kitchen, remain in the state where the staying time is displayed and the warning display state is maintained. The value of the subtraction counter provided in the same faucet side terminal device remains the preset value.

  As a result, when using a kitchen faucet, the user can be warned that this waste water treatment should be performed first. By displaying the residence time, it is possible to reversely calculate when the wastewater treatment was performed, so there is no possibility of repeating the wastewater treatment.

  The first and second residence times can be arbitrarily set. When the first residence time is set to 1 day, for example, the second residence time can be set to 5 days or more, for example. For example, when one week is set as the second residence time, when no water is used for one week or more, the waste water treatment is promoted by the blinking display of the indicator lamp.

  The faucet side water passage time for measuring waste water is measured. This waste water measuring means is provided in the faucet side terminal device. When the waste water measuring means is constituted by a subtraction counter, the water passing time (opening time) for discarding water is until the display value of the subtraction counter provided in the display means becomes zero. When the display value of the subtraction counter becomes zero, the accumulated water can be surely discarded.

  The time required for draining water is about 5 to 30 seconds in the open state, although it varies depending on the discharge amount and the pipe length. In addition, it is preferable that the time required for the discarded water can be set depending on the installation location of the faucet. Set the faucet close to the water purifier to be short and the distant faucet to be long. This is because the pipe length from the water purifier to the faucet is different, and the amount of accumulated water is different.

  A filter using activated carbon or the like is usually used for the water purifier. As tap water passes through the filter, the filter gradually becomes dirty, so the time for replacement is clearly indicated. For example, the usage days of the filter are displayed on the faucet side terminal device. The number of days used is calculated by integrating the faucet opening period (hours). When the number of days of use exceeds the specified number of days, a filter replacement warning display means (indicator light) blinks to prompt the user to replace the filter. The indicator lamp is controlled to be turned off by replacing the filter.

  Instead of throwing away the accumulated water, it may be used effectively. In this case, it can be achieved by providing an instant water heater. The instant water heater may be an instant water heater that can perform hot water sterilization of stagnant water, adjust the hot water temperature so that it can be used as boiling water, and can be switched to cold water. When the waste water treatment is performed after adjusting the hot water temperature to an appropriate temperature, for example, the retained water itself can be used as hot water for cleaning. In this way, if the accumulated water is boiled (boiled), it can be drunk and the accumulated water can be used without waste. Of course, the stagnant water can be discarded as it is by switching to the cold water side.

  The instant water heater can be installed individually for the necessary faucets or can be installed as a common instant water heater for a plurality of faucets.

  In this invention, the residence time from the water purifier to the faucet is detected and the information is notified, and clearing of the residence information is related to the opening of the faucet, and the faucet that is not used The staying information is displayed as it is on the display means related to.

  According to this, the stagnant water is not carelessly used as drinking water, and a hygienic and comfortable life can be realized. And it can be judged based on this staying information whether the staying water should be thrown away. For this reason, waste such as repeatedly discarding tap water can be eliminated, and the accumulated water can be discarded without waste by utilizing the discarded water measurement information, so that the water saving effect is very high.

  Furthermore, information such as the residence time displayed on the faucet side terminal device as a display means is related to the faucet in which the faucet side terminal device is installed, and the residence time etc. when the faucet is closed Therefore, it is possible to reliably discriminate a faucet that has been subjected to discarded water treatment and a faucet that is not.

  By associating with an instant water heater, the accumulated water can be effectively used instead of being discarded.

Subsequently, a preferred embodiment of the staying water stay detection system according to the present invention will be described in detail with reference to the drawings.
1 and 2 are conceptual diagrams when the present invention is applied to a home centralized water purification system. FIG. 1 is a system conceptual diagram identical to FIG. 15 described in the conventional example, and FIG. 2 is a system conceptual diagram identical to FIG.

  As shown in FIG. 1 or FIG. 2, the stagnation detection system 40 according to the present invention includes a stagnation measuring device 40A that detects a stagnation state of tap water, and water that displays a stagnation time of stagnation water based on a water flow detection output. It is comprised with the stopper side terminal device 40B.

  In the downstream (water faucet side) of the water purifier 24 attached near the water meter 16, in the main body of the water purifier 24 or in a close position, and in the water main 18 a before being branched. A residence measuring device 40A is provided. The residence measuring device 40A is a device for detecting whether tap water has flowed through the water main 18a as the faucet 28 is opened and closed.

  Therefore, in both FIG. 1 and FIG. 2, this residence measuring device 40 </ b> A is provided in a pipe line between the water main pipe 18 a and the water purifier 24 to which the lead-in pipe 22 c branched to the washroom is connected. Thereby, the water flow state of tap water can be detected no matter which faucet 28 is opened and closed. When the water purifier 24 is installed indoors, the residence measuring device 40A is also installed indoors.

  The staying information generated based on the water flow detection output Sa (see FIG. 4) detected by the staying measuring device 40A is transmitted to the faucet side terminal device 40B constituting the display means installed in the house 20 indoors. The Of the faucets installed indoors, the faucet with a high probability of being used for drinking is preferentially installed in the faucet terminal device 40B. Therefore, although it is usually a kitchen and a washroom, FIGS. 1 and 2 show a case where it is installed in all the faucets 28 for the time being. The faucet side terminal devices 40B installed in the respective faucets 28 (28a to 28d) are indicated by 40Ba to 40Bd.

  The faucet side terminal device 40B (40Ba to 40Bd) is attached near the faucet 28 (28a to 28d). For example, in the case of a kitchen, the faucet side terminal device 40B (40Ba to 40Bd) is easy to see near the kitchen faucet 28a. If it is a washroom, it can be installed on the side of the wall to which the washstand is attached.

  FIG. 3 shows an example of the faucet side terminal device 42 provided in the faucet side terminal device 40B. The faucet side terminal device 42 has three display units, that is, a stay display unit 46, a waste water display unit 48, and a filter display unit 50 in the display panel 44.

  A staying display unit 46 is located in the center of the display panel 44. The staying display unit 46 includes a staying day display unit (display means) 46a that stays in the water main pipe 18a including the branch pipe. In the upper central portion, warning display means (indicator lamp) 46b is used for warning display when the staying days exceed the standard staying days.

  An LCD or the like can be used as the display means 46a. In this example, the residence time of the staying water is converted into days and hours and displayed as the staying days. This is a case where the staying days are always displayed from when the staying time has passed for one day or more. The residence time serving as the display standard is the first residence time.

  The warning standard retention days (second residence time) are set on the basis of the number of days during which germs and the like are easily propagated in the retained water. In view of safety, it is preferable to set the warning standard staying days to about 5 days, but usually about 1 week is the standard. The residence time is reset (zero) by opening the faucet 28. By displaying the residence time, it is possible to know how much time has passed since the last wastewater treatment, so there is no possibility of repeating the later-described wastewater treatment.

  A waste water display section 48 is provided below the staying display section 46. Waste water is tap water including staying water as described above. When staying exceeds the warning reference staying days, the staying water is thrown away without being used as drinking water.

  The waste water display section 48 includes display means (LCD or the like) 48a for a subtraction counter for waste water. The subtraction counter is a clock counter and is displayed in units of seconds in this example.

  The amount of accumulated water is different depending on the pipe length including the branch pipes from the water purifier 24 to each faucet 28. Depending on whether the average pipe length is used as a reference or the longest pipe length as a reference, in this example, the faucet is used from the pipe length of each of the faucets 28a to 28d. The amount of time for which the accumulated water is obtained and the accumulated water can be completely discarded (the range of about 10 to 30 seconds in the open state is different depending on the discharge amount, the pipe length, etc.). It is set as a preset value of a subtraction counter related to 28a to 28d. Before the water is discarded, the preset value is displayed on the display means 48a. Therefore, strictly speaking, the preset value varies slightly depending on the faucet installation location.

  When the corresponding faucet 28 is opened, the subtraction counter starts subtraction, and when the count value becomes zero, the value of the display means 48a also becomes zero. As a result, the end timing of the discarded water can be determined simply by gazing at the display content of the display means 48a. It is also possible to operate a buzzer (not shown) at the same time as the end of the discarded water.

  The filter display unit 50 includes a display unit 50a that displays the number of days the filter has been used, and a warning display unit (indicator lamp) 50b. The accumulated number of days used for a filter (not shown) accommodated in the water purifier 24 is displayed on the display means (LCD or the like) 50a. If the number of days used exceeds the accumulation reference date, a warning character (for example, “change the filter” The indicator lamp (LED or the like) 50b located next to “) is lit (for example, blinked). When the filter is replaced, the number of days of filter use is cleared to zero and the indicator lamp 50b is also turned off.

In order to perform such display control, the residence measuring device 40A can be configured as shown in FIG.
FIG. 4 is a functional block diagram, and has a water purifier side water flow detection means 52. As the water purifier-side water flow detection means 52, an impeller type water flow detector for detecting a water flow state by inserting an impeller into the water pipe 18, or a water pressure for detecting a water flow state by the water pressure of tap water. A detector or a running water sound detector that detects the sound of tap water flowing in the water pipe can be used. In this example, an impeller type water flow detector is used.

Further, the water purifier side water passage detection means 52 is a switch (not shown) that is turned on and off by opening and closing the operation lever 32 of the faucet 28 instead of the structure for directly detecting the water flow as described above. Means may be provided in the faucet 28, and the flow of water may be indirectly detected by detecting the operation of the operation lever 32 by the switch means.

  As a switch means for detecting the operation of the operation lever 32, a mechanical switch mechanism in which the conducting portion is mechanically contacted according to the operation of the operation lever 32, or a magnetic switch using a magnet and a hall sensor. It may be a mechanism, or may be a switch mechanism that incorporates a tilt sensor that senses the degree of tilting of the operation lever 32.

  When the faucet 28 is an electronic faucet that electrically opens and closes a solenoid valve or the like by operating an electrical switch mechanism, the faucet 28 is opened or closed. It is also possible to detect the flow of water indirectly by detecting the on / off of the operation signal of the electrical switch mechanism.

  A detection output Sa corresponding to the opening period and the stopping period of the faucet 28 is obtained by the water purifier side water passage detection means 52 described above. The water passage detection output Sa is supplied to the stopper period detecting means 54 and the stopper period detecting means 56. When one of the faucets 28 is opened by the opening period detecting means 56, a period Ta from when the faucet 28 is opened until it is stopped is detected. As shown in FIG. 5, a period Tb from when the faucet 28 is stopped until when any of the faucets 28 is opened is detected.

  The detection output (corresponding to the period Tb) indicating the stoppage period, that is, the staying time of the staying water is supplied to the staying day calculating means 58. In the staying days calculation means 58, in addition to the staying days calculation process, a warning signal generation process is also performed. For this reason, the staying days calculating means 58 first calculates the continuous stoppage periods Y1, Y2, Y3,..., Ym, in other words, the staying time which is the tap water stoppage period (FIG. 5B). It is calculated whether the residence time has exceeded the first residence time or has reached the second residence time. Residence time is converted into residence days.

  In this example, when the staying days exceed the first staying time, the staying days data (day + hour) is output (see FIGS. 6A to 6C), and a warning is given when the staying days exceed the second staying time. Display is also performed simultaneously (see FIGS. 7A to 7C). The staying days and the warning display related to the warning signal are reset (cleared) when any of the faucets 28 is opened. That is, the residence time always measures only the continuous stop period of all the faucets 28, and once any faucet 28 is opened, all the data is reset to zero (zero cleared).

  The staying day data and the staying information such as a warning signal are each output to the transmitting unit 60. The transmission unit 60 performs a function of transmitting staying information to all the faucet side terminal devices 40B (40Ba to 40Bd), and includes a transmission antenna 64. Information transmission to the faucet side terminal device 40B may be wired instead of wireless. In that case, information is sent to all the faucet side terminal devices 40B via the output terminal 66 provided in the transmission unit 60.

  If the display state is updated in units of time, for example, the staying days (days and hours) are displayed on the display means 46a (FIG. 7B). The number of unused days can be easily grasped.

  From the opening period detection means 56 described above, a detection output Ta related to the opening period of the faucet 28 is obtained (FIG. 5A). The opening detection output (output corresponding to Ta) is supplied to the filter use days adjustment warning signal generation means 70. The filter opening days adjustment warning signal generation means 70 sequentially calculates (integrates) the opening period, and the value obtained by converting the total integrated time into days is the number of days used for the filter attached to the water purifier 24. That is, as shown in FIG. 5C, the total value of the opening periods X1, X2, X3,.

  In this filter use days adjustment warning signal generation means 70, since warning signal generation processing is also performed, a warning signal is generated when the number of use days exceeds the warning reference days. Data indicating the number of days of filter use and a warning signal (both are retention information) are respectively supplied to the transmission unit 60 and transmitted to all the faucet side terminal devices 40B together with the above-described retention day data. As a result, the days of use of the filter are displayed on the display means 50a provided in each faucet side terminal device 40B (see FIG. 3), and when the warning reference days are exceeded, the indicator lamp 50b blinks for warning ( (See FIG. 3).

  When the filter is exchanged, the filter use days adjustment warning signal generation means 70 calculates by turning on a reset switch (button configuration) 86 provided in association with the filter use days adjustment warning signal generation means 70. All the information such as the accumulated days used is reset. Since the warning signal and the like are also reset, the display of the indicator lamp 50b disappears.

  Of the display device 42 provided on the faucet side terminal device 40B side, the display means 48a of the subtraction counter functions as a display means required for waste water. For example, as shown in FIG. 8, a display process related to a specific faucet, for example, a faucet 28c, will be described. In this case, the faucet 28c is opened and stopped by the faucet side water passage detection means 96. (See FIG. 11). Details thereof will be described later. When the use state of the faucet 28c is FIG. 8A, the water flow detection output Sc shown in FIG. 8B is obtained. The subtraction counter starts the subtraction process of the counter in synchronism with the rising (opening state) of the water flow detection output Sc. The subtraction process is continued until the water flow detection output Sc falls (stopped state). The water passage period T4 in which the value of the subtraction counter becomes zero means the end of the waste water treatment time Tp (FIGS. 8B and 8C).

  When the faucet 28c is stopped, the value of the subtraction counter returns to the preset value in synchronization therewith. At the same time, as described later, the stay days display is cleared and the stay water warning display is also cleared.

  FIG. 9 shows a conceptual block diagram when the stay measuring device 40A is configured by a microcomputer. Memory means storing program information for executing a counter process for calculating a residence time, a process for calculating the number of days used for a filter, and the like, including a control unit (CPU) 72 that controls the entire residence measurement device A (ROM) 74 and memory means (RAM) 76 used as a working memory when executing these programs are connected to the bus 71, respectively.

  Furthermore, the water purifier side water passage detection means 52 shown in FIG. 4 is connected to the bus 71, and the various calculation processes described above are executed using the detection output Sa from the water purifier side water passage detection means 52. Is done. Various calculated information (retention information such as display information and warning information) is transmitted to all the faucet side terminal devices 40B via the transmission unit 60. Alternatively, the transmission information is supplied to the output terminal 66 through the interface 78, and is sent out to all the faucet side terminal devices 40B using a cable. When installing the stay measurement device 40A indoors, a wired system using this cable is convenient.

  A reset switch 86 is further connected to the bus 71 via a reset interface 87 so that the CPU 72 can perform reset processing such as the number of days the filter has been used.

  The power supply unit 80 when the residence measuring device 40A is configured in this way can be configured as a power supply circuit using a secondary battery, for example, and in that case, the water purifier side water flow detection means as a charging source for the secondary battery. 52 is used. An electric double layer capacitor (capacitor) may be used instead of the secondary battery.

  As shown in FIG. 10, when an impeller-type water flow detector is used as the water purifier-side water flow detection means 52 connected to the water pipe 18, an ultra-small size is provided on the rotating shaft 53 a of the impeller 53. A generator 82 is attached. A secondary battery (about 6 to 12 volts) 84 is connected to the output end of the generator 82, and various load circuits shown in FIG. 9 are connected to both ends of the secondary battery 84.

  Since tap water passes through the water purifier side water flow detection means 52 as the faucet 28 is opened, the impeller 53 is rotated by the water flow at that time, and the generator 82 is driven. The electric power generated at is stored in the secondary battery 84. Since the secondary battery 84 is charged, the load circuit of FIG. 9 can be operated with this charging power. Since tap water is used many times and used for a long time, the amount of power generated is sufficient to fully charge the secondary battery 84.

  Of course, although not shown, the power supply unit 80 is equipped with a spare battery. Of course, it is also possible to supply power by using an AC power supply instead of a rechargeable power supply unit 80.

  FIG. 11 is a specific example of a faucet side terminal device 40B provided in association with each faucet 28. In this example, it has the receiving part 90 corresponding to the transmission part 60 of FIG. Accordingly, an antenna 88 is attached to the main body of the faucet side terminal device 40B. In addition, since transmission using a cable can be considered in the receiving unit 90, a wired input terminal 89 is also provided.

  The staying information such as display information received by the receiving unit 90 is supplied to the reception signal separating unit 92 and separated into corresponding display information for the display units 46, 48, and 50.

  Therefore, the staying display unit 46 is supplied with the data of the staying days separated and the corresponding warning signal, and the staying days and the warning are displayed. The filter display unit 50 is supplied with information corresponding to the number of days of filter use and a warning signal, whereby display processing as shown in FIG. 3 is performed and warning processing is performed.

  Further, a faucet side water passage detection means 96 is provided in relation to the faucet 28, and its detection output Sc is supplied to the subtraction counter 97. The counter output from the subtraction counter 97 is supplied to the discarded water display unit 48 and the contents of the counter are displayed. The detection output Sc of the faucet side water passage detection means 96 is further supplied to the reception signal separation unit 92, and the staying days output and warning signal clear processing is performed in synchronization with the falling output of the detection output Sc. That is, when the waste water treatment is performed, the display of the earliest staying days and the warning display are not necessary.

  Using the preset terminal 97a provided in the subtraction counter 97, a waste water treatment time (water flow time) suitable for the faucet side terminal device 40B is preset.

  The power supply unit 94 may use an AC power supply, but is preferably a battery power supply in order to prevent an accident such as an electric shock. The battery power source in this case may be a primary battery or a secondary battery.

  In the other faucet-side terminal device 40B, when the relevant faucet 28 is opened, the corresponding subtraction counter starts subtraction, and at the same time as the faucet 28 is stopped, the stay days display and warning display are respectively displayed. Cleared. However, when the associated faucet 28 is not opened, the above-described processing is not performed. Therefore, if the staying days are displayed and a warning is displayed, the waste water treatment using the faucet 28 is performed. It shows that it is not broken. In this way, it is possible to determine the presence or absence of waste water treatment simply by looking at the display content.

  Next, an example of display processing and warning processing by the above-described program will be described with reference to a flowchart shown in FIG. First, the display mode related to the staying water will be described.

  When the operation power of the power supply units 80 and 94 on the residence measuring device 40A and the faucet side terminal device 40B is turned on and this program is started, the faucet 28 in which the faucet side terminal device 40B is installed. Opening and stopping (closing) are monitored (step 101). When the water supply is not used, the faucet 28 keeps the stoppered state. In that case, the stopper period Tb is calculated (step 102), and the staying days (days and hours) of the staying water are calculated based on the stopper period Tb. ) Is calculated (step 103).

  When the staying days have passed the first staying time (one day), the data indicating the staying days is transmitted to the faucet side terminal device 40B, and the staying days are displayed on the display means 46a (step 104). Since the staying days are updated in units of hours, it is possible to easily know the staying time (unused time) up to the present time. When the staying days are less than one day, nothing may be displayed on the display means 46a, but in some cases, a display such as “one day miman” may be performed as in step 104. In this case, display data for displaying “daily miman” on the faucet side terminal device 40B side can be prepared in advance.

  Next, it is determined whether or not the staying days are equal to or longer than the second staying time that is the warning staying days (step 105), and the continuous time of the staying water exceeds the second staying time (one week in the above example). From time to time, the indicator lamp 46b, which is a warning lamp, starts blinking (step 106).

  This blinking display can inform the user (water service user) that the water staying at the earliest time is unsuitable for drinking water, so the user should dispose of the water before drinking the tap water. It can be recognized with certainty. Since it is a warning display, the display color of the indicator lamp 46b is preferably red.

  When the time is less than the second residence time, the blinking display is not performed, but the opening state of the faucet 28 is always detected regardless of whether it is less than the second residence time or more than the second residence time. (Step 107). Therefore, when the stopper is still in the stopped state, the residence time calculation process described above is continued (steps 101 and 102).

  On the other hand, when any of the faucets 28 is opened (step 107), all the residence time calculation processing so far is reset, and accordingly, the stoppage period Tb is also zero, and the residence days are also "1 day. "Miman" state is entered (step 108).

  As described above, the residence time of the staying water is calculated by the continuous stoppage period in all the faucets 28, and the residence time is reset to zero when it is opened once. The display of the indicator lamp 46b is also turned off. If any of the faucets 28 is opened while the indicator lamp 46b is blinking, the opening is recognized as an opening for the later-described waste water treatment, and the corresponding waste water display processing is executed. Is done.

  Step 121 and the subsequent steps are processing systems for detecting the opening state of the faucet 28 and notifying the filter replacement processing. When the opening of any of the faucets 28 is detected (step 101), an integration process (accumulation process of time) of the opening period is executed based on the opening period Ta (step 121). The accumulated days are calculated from the accumulated time (step 122). The accumulated number of days is displayed on the display means 50a (step 123). If the total number of days exceeds one month, convert the number of days to months, for example, “6 months 10 days”, or if it can be converted to year, month, “1 year 2 months” Only the year and month may be displayed as shown in FIG.

  Subsequently, it is checked whether the accumulated number of days has reached the filter replacement time (step 124). In the case of a centralized water purification system, the filter replacement period is about one year. For example, when it is set as one year (12 months), only the accumulated days are required until the accumulated number of days used exceeds one year. It is displayed on the display means 50a. However, when the accumulated number of days exceeds one year, in addition to displaying the accumulated number of days, the information indicating the accumulated number of days and the warning signal are all stored as the staying information so that the filter replacement indicator lamp 50b blinks. It is transmitted toward the plug-side terminal device 40B (step 125). By performing such processing, it is possible to notify twice that the cumulative number of days has exceeded one year and the filter replacement time has come.

  Since the reset switch 86 is operated when the filter is exchanged, this operation status is checked (step 126). When the reset switch 86 is operated, all the accumulated information of the filter use days, warning information, etc. Reset. As a result, the display on the display means 50a becomes zero, and the indicator lamp 50b is also controlled to be turned off (step 127).

  Originally, it is acceptable to display the accumulated number of days or just a flashing warning light, but if you forget the recommended number of days to replace the filter with only the accumulated number of days, you can recognize the number of days by warning display and display the warning. It is because it can be dispelled by displaying the number of days that it becomes anxious about how many days the recommended number of days for replacement of the filter is set.

  In addition, in an Example as an example which arrange | positions the residence measurement apparatus 40A including the water purifier side water flow detection means 52 which comprises the residence detection system 40, the residence measurement apparatus 40A becomes a separate structure independent of the water purifier 24. . Since this configuration is an example, as another example, the residence measuring device 40 </ b> A may be built in the main body of the water purifier 24. As described above, when the retention measuring device 40A is configured integrally with the water purifier 24, it is a matter of course that the water flow described above is provided in a drain pipe (purified side) (not shown) provided inside the main body of the water purifier 24. The detection means 52 is connected.

  Moreover, as a case where 40 A of residence measurement apparatuses are installed, installing in the faucet 28 side can be considered other than the Example mentioned above, for example. When installing as a part of the faucet 28, the water passage detecting means 52 is connected to the lead-in pipe 22a in the faucet 28, and the faucet side terminal device 40B is provided on the faucet fitting body. become.

  Thus, by attaching this stay detection system 40 to the faucet 28 itself, it is easy to see the display content, and there is an advantage that the waste water treatment can be executed reliably. In addition, since the stagnation detection system 40 is incorporated in the faucet 28 itself, a secondary effect such as eliminating the need for independent installation of the stagnation detection system 40 can be obtained. Of course, the faucet side terminal device 40B can be separated and installed on a countertop or the like.

  The residence detection system 40 described above can also be disposed in the vicinity of the faucet 28. In this case, the residence measuring device 40A and the faucet side terminal device 40B may be configured separately.

  The above-described embodiment is a case where stagnant water unsuitable for drinking is discarded. The accumulated water can be effectively used instead of being discarded. In this case, it can be achieved by providing an instant water heater. Instant water heaters can be sterilized at a high temperature, and can be used as boiling water (boiling water). The temperature of the hot water can be adjusted and can be switched to cold water. The

  Since such a quick water heater and a small water heater that can be installed on the lower surface of the sink or in an appropriate empty space are already on the market, the detailed configuration and description thereof will be omitted. As the instant water heater to be installed, one having a sterilizing function (sanitizing function) in addition to such a heating function is most preferable. In the following examples, an instant water heater with a sterilizing function is used.

  FIG.13 and FIG.14 shows the Example when this instant water heater is used. 13 and 14 are schematic configurations showing the concept. FIG. 13 corresponds to FIG. 1 and FIG. 14 corresponds to FIG. In these embodiments, only a necessary faucet among a plurality of faucets 28 is installed in the immediate vicinity of the faucet. Referring to FIG. 13, in this example, the water heater 28 (120A to 120C) is provided in each of the faucet 28a installed in the kitchen, the faucet 28 installed in the bathroom, and the faucet 28c installed in the bathroom. This is the case. The faucet 28a is installed on the lower surface of the sink, the faucet 28b is installed in or near the bathroom, and the faucet 28c is installed on the lower surface of the washbasin. Of course, it can be easily understood that the present invention can be applied even when the instant water heater 120 is already installed.

  As described above, the hot water heater can be adjusted to hot water temperature and switched to cold water. When throwing away the accumulated water, the temperature of the hot water is adjusted to an appropriate temperature using this instant water heater, and then the discarded water is treated. For example, the retained water itself can be used as hot water for cleaning. In some cases, if the stagnant water is boiled, high temperature sterilization is performed, so that it can be drunk, and even stagnant water can be used without waste. Of course, the stagnant water can be discarded as it is by switching to the cold water side.

  FIGS. 13 and 14 are examples in which an instant water heater 120 is individually installed for each of the faucets 28. However, a single unit commonly used for a plurality of faucets, for example, faucets 28a to 28c. An instant water heater 120 (not shown) can also be installed. By doing so, the number of instant water heaters 120 can be saved, which is advantageous in terms of installation cost and installation space.

  In the above-described embodiments, the present invention is applied to a domestic water purification system, but it is needless to say that the present invention can also be applied to a commercial purification system.

  The present invention can be applied to a stagnant water retention detection system related to a water purifier used in a centralized water purification system used for home use or business use.

It is explanatory drawing for demonstrating the outline | summary of the staying water detection system which concerns on this invention (the 1). It is explanatory drawing for demonstrating the outline | summary of the staying water detection system which concerns on this invention (the 2). It is a figure which shows the example of a display of the faucet side terminal device provided in the residence detection apparatus side. It is a block diagram which shows the outline | summary of the residence measurement apparatus used for the residence detection system of the residence water concerning this invention. It is a wave form diagram with which it uses for the operation | movement description (the 1). It is a wave form diagram with which it uses for description of the operation | movement (the 2). It is a wave form diagram with which the operation | movement description is provided (the 3). It is a wave form diagram which shows the example of the waste water treatment by the faucet side terminal device side. It is a block diagram which shows the other structural example of a residence measurement apparatus. It is a block diagram which shows the structural example of the power supply part used for the said apparatus. It is a block diagram which shows an example of the faucet side terminal device which comprises a stay detection system. It is a flowchart which shows an example for implement | achieving the staying days display process of a staying detection system, etc. It is a block diagram of the principal part which shows the other Example of this invention (the 1). It is a block diagram of the principal part which shows the other Example of this invention (the 2). It is a figure for demonstrating the relationship between the in-house drawing-in situation of a water pipe, and a centralized water purification system (the 1). It is a figure for demonstrating the relationship between the domestic pull-in state of a water pipe, and a centralized water purification system (the 2).

Explanation of symbols

16 ... Water meter 18a ... Water mains 22a-22e ... Pull-in pipe 24 ... Water purifier 28 (28a-28d) ... Water faucet 40 ... Retention detection system 40A ... Retention Measuring device 40B ... faucet side terminal device 52 ... water purifier side water passage detection means 54 ... stop plug period detection means 56 ... opening period detection means 58 ... residence time calculation means 60 ..Transmission unit 97... Subtraction counter 70... Filter usage days settlement warning signal generation means 80 and 94... Power supply unit 90... Reception unit 92. 48: Waste water display 50: Filter display 130: Instant water heater

Claims (5)

A water purifier side water flow detecting means for detecting a water flow state provided on the water purifier main body of the centralized water purification system by the central system or the water outlet side of the water purifier;
And staying measuring means for generating a dwell information by measuring the residence time of the accumulated water staying in the water pipe on the basis of the water flow state detected by the water purifier side water passage detection means,
Provided in the vicinity of a faucet attached to the end of the water pipe, and comprises a display means for displaying the stay information generated by the stay measuring means ,
The residence information displayed on the display unit, the residence detection system retained water, characterized in that it is cleared by unplugging the faucet. The above residence measurement hand stage,
Measuring the residence time when the stop plug state of the faucet is continuous, when the residence time is longer or equal to a predetermined time, the warning information for discard water treatment is a process of discarding the accumulated water The stay water detection system according to claim 1, wherein the stay information is output to the display unit . A faucet-side water passage detection means provided on the faucet for detecting stoppage and opening of the faucet;
In addition to a subtraction counter that measures the passing time of waste water in conjunction with the stop and open of the faucet detected by the faucet side water passage detection means ,
The stagnant water retention detection system according to claim 1 or 2 , wherein the display unit displays the water passage time measured by the subtraction counter . An instant water heater is provided in connection with the faucet,
The instant water heater is an instant water heater that can adjust the hot water temperature so that it can be sterilized at high temperature and can be switched to cold water.
The stay water detection system according to claim 1, wherein the stay water is boiled or used as warm water . The stagnant water stagnation detection system according to claim 4, wherein the instant water heaters are individually installed for necessary faucets or are commonly installed for a plurality of faucets.

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