JP5418260B2 - Water treatment system - Google Patents

Description

  The present invention relates to a water treatment system.

  2. Description of the Related Art Conventionally, a water treatment system that can supply both ground water (hereinafter referred to as “treated water”) and tap water subjected to filtration treatment to a water receiving tank is known. In such a water treatment system, normally, treated water is preferentially supplied to the water receiving tank, and when water treatment cannot be performed, tap water is supplied to the water receiving tank as preliminary water supply. (For example, refer to Patent Document 1).

Japanese Patent No. 3230085

  In the water treatment system as described above, tap water is not supplied to the water receiving tank as long as the apparatus for filtration treatment is operating. On the other hand, if the tap water is not supplied to the water receiving tank for a long time, the tap water staying in the pipe for supplying the tap water to the water receiving tank is likely to be contaminated with bacteria. For this reason, if the tap water is supplied to the water receiving tank after the state where the tap water is not supplied to the water receiving tank for a long time, there is a possibility that the contaminated tap water is supplied to the water receiving tank.

  Accordingly, an object of the present invention is to provide a water treatment system that prevents as much as possible reserve water such as contaminated tap water from being supplied to a water receiving tank.

The present invention includes a water receiving tank, a treated water supply line for supplying treated water produced by filtering raw water to the water receiving tank, a preliminary water supplying line for supplying preliminary water to the water receiving tank, and the treatment Treated water distribution means for distributing treated water toward the water receiving tank via a water supply line; and preliminary feed water distribution means for distributing preliminary water supply toward the water receiving tank via the preliminary water supply supply line; Preliminary water supply stoppage time measuring means for measuring the time when the supply of preliminary water supply from the preliminary water supply line to the water receiving tank is stopped, water level detecting means for detecting the water level of the water receiving tank, and detection by the water level detecting means When the water level of the received water tank is within a predetermined water level range, the treated water circulation means is controlled to supply treated water from the treated water supply line to the received water tank, and the water level detecting means detects the treated water. If the water level of the received water tank is less than the lower limit of the predetermined water level range or the preliminary water supply start water level below the lower limit of the water level range, the preliminary water supply is performed from the preliminary water supply line to the water tank. controls said preliminary water circulation unit to supply the pre-feed supply in no event the stop time counting by the counting means reaches the set time, the water level of the water receiving tank detected by the water level detecting means said predetermined when the between of the upper limit of the level range of said pre-feed water supply start level, and flow control means for controlling the preliminary water circulation unit to supply the pre-water supply to the water tank from the preliminary feed supply line, A water treatment system comprising:

Further, in the water treatment system, the distribution control unit is configured to determine whether the water level of the water receiving tank detected by the water level detection unit is the predetermined level when the time measured by the preliminary feed water supply stop time counting unit reaches a set time . when between upper and said preliminary feed supply starting level of the water level range, only while controlling the processing water circulation unit to supply treated water to the water tank from the treated water supply line, pre-Symbol preliminary It is preferable to control the preliminary water supply circulation means so as to supply preliminary water supply from the water supply supply line to the water receiving tank.

In the water treatment system, the water treatment system further includes a preliminary water supply time measuring means for measuring the time during which the preliminary water supply is supplied from the preliminary water supply line to the water receiving tank, and the flow control means is detected by the water level detection means. In addition, when the water level of the water receiving tank is between the upper limit of the predetermined water level range and the preliminary water supply start water level, the preliminary water supply circulation means is configured to supply the preliminary water supply from the auxiliary water supply line to the water receiving tank. When the time measured by the preliminary water supply time measuring means reaches a set time during the control, the preliminary water supply is stopped so as to stop the supply of the preliminary water supply from the preliminary water supply line to the water receiving tank. It is preferable to control the distribution means.

  ADVANTAGE OF THE INVENTION According to this invention, the water treatment system which prevents preliminary water supply, such as contaminated tap water, as much as possible to a receiving tank can be provided.

It is a schematic structure figure showing water treatment system 100 of a 1st embodiment of the present invention. It is a functional block diagram concerning control of water treatment system 100 of a 1st embodiment. It is a flowchart which shows the operation | movement which extracts the tap water W140 regularly from the tap water supply line L130 in the water treatment system 100 of 1st Embodiment. It is a flowchart which shows the operation | movement which extracts tap water W140 from the tap water supply line L130 in conjunction with supply of the treated water W130 in the water treatment system 100A of 2nd Embodiment.

<First Embodiment>
With reference to FIGS. 1-3, the water treatment system 100 of 1st Embodiment of this invention is demonstrated. FIG. 1 is a schematic configuration diagram illustrating a water treatment system 100 according to a first embodiment of the present invention. FIG. 2 is a functional block diagram related to the control of the water treatment system 100 of the first embodiment. FIG. 3 is a flowchart showing an operation of periodically extracting tap water W140 from the tap water supply line L130 in the water treatment system 100 of the first embodiment.

  As shown in FIG. 1, the water treatment system 100 of the first embodiment includes a filtration device 110, a water receiving tank 120, and a system control device 101. Moreover, the water treatment system 100 of 1st Embodiment is the raw | natural water supply line L110, the treated water supply line L120, the tap water supply line L130 as a reserve water supply line, the stored water supply line L140, and a treated water distribution means. As a raw water pump 131, a treated water replenishing water valve 132 as a treated water circulating means, a tap water replenishing water valve 133 as a reserve water circulating means, and a water level gauge 134 as a water level detecting means. “Line” is a general term for lines capable of flowing fluid such as flow paths, paths, and pipelines.

  The water treatment system 100 of the first embodiment is a system for supplying makeup water W110 stored in the water receiving tank 120 to a device to be used (not shown) via a stored water supply line L140. In addition, the water treatment system 100 according to the first embodiment can supply treated water W130 produced by filtering raw water W120 to the water receiving tank 120 via the treated water supply line L120, and supply tap water W140 to the tap water. It is comprised so that it can supply to the water receiving tank 120 via the line L130.

  The filtration device 110 is a device that produces treated water W130 by filtering raw water W120 made of groundwater (well water). A raw water supply line L110 and a treated water supply line L120 are connected to the filtration device 110. The raw water supply line L110 is a line that supplies the raw water W120 to the filtration device 110. The upstream side of the raw water supply line L110 is connected to a well (not shown) serving as a supply source of the raw water W120. A raw water pump 131 is provided in the raw water supply line L110. The raw water pump 131 can send the raw water W120 from the upstream side of the raw water supply line L110 to the downstream filtration device 110.

  The treated water supply line L <b> 120 is a line that supplies the treated water W <b> 130 that has been filtered and manufactured by the filtration device 110 to the water receiving tank 120. The upstream side of the treated water supply line L120 is connected to the filtration device 110. The downstream end 135 of the treated water supply line L120 is connected to the water receiving tank 120. A treated water supply water valve 132 is provided in the treated water supply line L120.

  The treated water replenishing water valve 132 is a control valve that can control the opening and closing of the line. The treated water replenishment water valve 132 controls the supply start or supply stop of the treated water W130 flowing through the treated water supply line L120 between the downstream end 135 of the treated water supply line L120 and the filtration device 110. Can do. By opening the treated water replenishing water valve 132, the treated water W130 can be distributed toward the water receiving tank 120 via the treated water supply line L120. In the present embodiment, the raw water pump 131 and the treated water replenishment water valve 132 constitute “treated water circulation means for circulating the treated water W 130 toward the water receiving tank 120 via the treated water supply line L120”.

  The water receiving tank 120 is a tank that stores the treated water W130 supplied from the treated water supply line L120 and the tap water W140 supplied from the tap water supply line L130. The water tank 120 is connected to the treated water supply line L120, the tap water supply line L130, and the stored water supply line L140.

  The tap water supply line L <b> 130 is a line that supplies tap water W <b> 140 as preliminary water supply to the water receiving tank 120. The upstream side of the tap water supply line L130 is connected to a supply source (not shown) of the tap water W140. An end 136 on the downstream side of the tap water supply line L <b> 130 is connected to the water receiving tank 120. A tap water supply water valve 133 is provided in the tap water supply line L130.

  The tap water replenishing water valve 133 is constituted by a control valve capable of controlling the opening and closing of the line. The tap water replenishing water valve 133 supplies the tap water W140 flowing through the tap water supply line L130 between the downstream end 136 of the tap water supply line L130 and a supply source (not shown) of the tap water W140. Start or supply stop can be controlled. By opening the tap water replenishing water valve 133, the tap water W140 can be distributed from the tap water supply line L130 toward the water receiving tank 120. In the present embodiment, the tap water pump (not shown) and the tap water replenishing water valve 133 provided on the upstream side of the tap water supply line L130 are “the tap water W140 is received through the tap water supply line L130. "Preliminary water supply and distribution means for distribution toward". In the present embodiment, it is assumed that the tap water pump constantly pressurizes the tap water W140 and supplies the tap water W140 to the tap water supply line L130.

  Treated water W130 is supplied from the treated water supply line L120 to the water receiving tank 120, and tap water W140 is supplied from the tap water supply line L130. The treated water W130 and the tap water W140 supplied to the water receiving tank 120 are stored as makeup water W110 in the water receiving tank 120.

  The stored water supply line L140 is a line that supplies the makeup water W110 stored in the water receiving tank 120 to a device to be used (not shown).

  The water receiving tank 120 includes a water level gauge 134 as water level detecting means. The water level gauge 134 can detect the water level of the makeup water W110 stored in the water receiving tank 120. The water level gauge 134 transmits information (signal) about the detected water level to the system control apparatus 101 described later.

  As shown in FIG. 1, in the water receiving tank 120, three water levels indicated by WL1, WL2, and WL3 are set. WL1 is a water level at which the supply of tap water W140 is started (preliminary water supply start water level). WL2 is a water level at which supply of the treated water W130 is started. WL3 is a water level at which the supply of the treated water W130 or the tap water W140 to the water receiving tank 120 is stopped.

When the water level in the water receiving tank 120 decreases to WL2, supply of the treated water W130 from the treated water supply line L120 is started. Then, when the water level in the water receiving tank 120 reaches WL3, the supply of the treated water W130 from the treated water supply line L120 is stopped.
Further, when the treated water W130 is supplied, when the water level in the water receiving tank 120 falls below WL2 and drops to WL1 due to a rapid increase in the amount of water used, supply of the tap water W140 from the tap water supply line L130 is started. Then, when the water level of the water receiving tank 120 exceeds WL1 and reaches WL2, the supply of the tap water W140 from the tap water supply line L130 is stopped.

  Thus, by controlling the opening and closing of the treated water replenishment water valve 132 so that the treated water W130 is supplied from the treated water supply line L120 to the receiving water tank 120, the water level of the replenishing water W110 stored in the receiving water tank 120 can be reduced. The water level can be maintained at WL3.

  Next, functions related to control of the water treatment system 100 of the first embodiment will be described with reference to FIG.

  The system control device 101 is a part that controls each unit in the water treatment system 100. The system control device 101 is constituted by, for example, a microprocessor including a CPU (central processing unit), a memory, and peripheral circuits such as input / output ports.

  As shown in FIG. 2, the system control apparatus 101 is electrically connected to, for example, a raw water pump 131, a treated water makeup water valve 132, a tap water makeup water valve 133, and a water level gauge 134.

  The system control apparatus 101 includes a control unit 102 and a memory 103. The control unit 102 includes a first time counter unit 104 as a preliminary water supply stop time measuring unit, a second time counter unit 105 as a tap water supply time measuring unit, and a distribution control unit 106 as a distribution control unit. Prepare.

  The first time counter unit 104 counts the time when the supply of the tap water W140 from the tap water supply line L130 to the water receiving tank 120 is stopped. The second time counter unit 105 counts the time when the tap water W140 is supplied from the tap water supply line L130 to the water receiving tank 120.

  When the water level of the water receiving tank 120 detected by the water level gauge 134 is in the water level range of WL2 to WL3, the distribution control unit 106 supplies the treated water W130 to the water receiving tank 120 from the treated water supply line L120. The water supply water valve 132 is controlled.

  When the water level of the water receiving tank 120 detected by the water level gauge 134 is less than WL1, the distribution control unit 106 supplies the tap water replenishing water valve so as to supply the tap water W140 from the tap water supply line L130 to the water receiving tank 120. 133 is controlled. Such control is performed when, for example, the treated water W130 cannot be supplied from the treated water supply line L120 to the receiving tank 120 due to a failure of the filtration device 110 and the water level of the receiving tank 120 falls below WL1. The

  The distribution control unit 106 performs the first setting when the time count by the first time counter unit 104 reaches the first set time, that is, after the supply of tap water from the tap water supply line L130 to the water receiving tank 120 is stopped. When the time has elapsed, the tap water supply water valve 133 is controlled so that the tap water W140 is supplied from the tap water supply line L130 to the receiving tank 120 regardless of the water level of the receiving tank 120 detected by the water level gauge 134. To do.

  The first set time is a residence time that serves as a reference when starting extraction of the tap water W140 that has accumulated in the pipe of the tap water supply line L130. For example, the first set time is set to a time when the tap water W140 staying in the pipe of the tap water supply line L130 is not contaminated by bacteria (or the contamination level is relatively low). The first set time is assumed to be, for example, several hours to one day.

  The distribution control unit 106 controls the tap water supply water valve 133 to supply the tap water W140 from the tap water supply line L130 to the receiving tank 120 regardless of the water level of the receiving tank 120 detected by the water level gauge 134. If the time count by the second time counter unit 105 reaches the second set time during the period, the tap water replenishment water is stopped so that the supply of the tap water W140 from the tap water supply line L130 to the water receiving tank 120 is stopped. The valve 133 is controlled.

  The second set time is a water passage time that becomes a reference when the tap water W140 is continuously extracted from the tap water supply line L130. For example, the second set time is set to a time necessary for extracting the tap water W140 remaining in the pipe of the tap water supply line L130. The second set time varies depending on the pipe length of the tap water supply line L130 and the flow rate of the tap water W140, but is assumed to be about 5 minutes.

  The memory 103 stores a control program and various data necessary for controlling the water treatment system 100. Specifically, the memory 103 includes a control program for operating various functions necessary for controlling the water treatment system 100, the water level (detected value) of the water receiving tank 120 detected by the water level gauge 134, the first set time, the second In addition to the set time, various calculated values are stored.

Next, with reference to FIG.1 and FIG.2, operation | movement of the water treatment system 100 of 1st Embodiment is demonstrated.
The control unit 102 of the system control device 101 causes the raw water W120 to be sent out from the raw water supply line L110 toward the filtration device 110 when the water level of the water receiving tank 120 detected by the water level gauge 134 is not less than WL2 and less than WL3. The raw water pump 131 is operated. The filtration device 110 produces treated water W130 by filtering the raw water W120 sent via the raw water supply line L110. The control unit 102 of the system control apparatus 101 controls the opening and closing of the treated water replenishing water valve 132 so that the treated water W130 flows through the treated water supply line L120. The treated water W130 flowing through the treated water supply line L120 is supplied to the water receiving tank 120.

  On the other hand, the control unit 102 of the system control device 101 does not send the raw water W120 from the raw water supply line L110 toward the filtration device 110 when the water level of the water receiving tank 120 detected by the water level gauge 134 becomes WL3 or higher. Thus, the operation of the raw water pump 131 is stopped. Further, the opening and closing of the treated water replenishment water valve 132 is controlled so that the treated water W130 does not flow through the treated water supply line L120. In this way, the makeup water W110 stored in the water receiving tank 120 is controlled so that the water level of WL3 is maintained.

  Moreover, the control part 102 of the system control apparatus 101, when the time count by the first time counter part 104 reaches the first set time, regardless of the water level of the water receiving tank 120 detected by the water level gauge 134, the tap water supply line. The tap water replenishing water valve 133 is controlled so that the tap water W140 is supplied from the L130 to the water receiving tank 120. That is, when a long time has elapsed since the supply of the tap water W140 from the tap water supply line L130 to the water receiving tank 120 was stopped, the tap water W140 staying in the pipe of the tap water supply line L130 is likely to be contaminated with bacteria. Become. For this reason, the control part 102 of the system control apparatus 101, when the 1st setting time passes after supply of the tap water from the tap water supply line L130 to the water receiving tank 120 stops, the tap water supply line L130 of In order to extract the tap water W140 remaining in the pipe, the tap water supply water valve 133 is controlled so that the tap water W140 is supplied from the tap water supply line L130 to the water receiving tank 120.

  As described above, when the first set time has elapsed since the supply of the tap water W140 from the tap water supply line L130 to the water receiving tank 120 has stopped, the tap water W140 that has accumulated in the pipe of the tap water supply line L130. Is extracted before being contaminated and supplied to the water receiving tank 120. For this reason, the contaminated tap water W140 can be prevented from being supplied to the water receiving tank 120 as much as possible.

In the above control, “regardless of the water level of the water receiving tank 120 detected by the water level gauge 134” means, in other words, “regardless of the water level of WL1 to WL3, the water level of the water receiving tank 120”.
On the other hand, if the tap water W140 is supplied from the tap water supply line L130 to the water receiving tank 120 when the water level of the water receiving tank 120 reaches the vicinity of WL3, the water receiving tank 120 may overflow. For this reason, even if the tap water W140 is supplied when the water level of the water receiving tank 120 is WL3 (or the vicinity thereof), the second set time is set so that the water receiving tank 120 does not overflow.

  When the time count by the second time counter unit 105 reaches the second set time, the control unit 102 of the system control device 101 stops the supply of the tap water W140 from the tap water supply line L130 to the water receiving tank 120. Thus, the tap water replenishing water valve 133 is controlled. According to this, regardless of the operation status of the water treatment system 100, a certain amount of the tap water W140 staying in the pipe of the tap water supply line L130 can be extracted. Moreover, since the tap water W140 is not supplied more than necessary from the tap water supply line L130 to the water receiving tank 120, the overflow of the water receiving tank 120 can be avoided as much as possible.

  Next, in the water treatment system 100 of 1st Embodiment, the operation | movement which extracts the tap water W140 regularly from the tap water supply line L130 is demonstrated with reference to the flowchart shown in FIG. The control of this flowchart is executed by the distribution control unit 106 of the control unit 102 based on a control program stored in the memory 103 of the system control apparatus 101. The control of this flowchart is repeatedly executed at predetermined time intervals (several seconds).

  As shown in FIG. 3, in step ST101, the distribution control unit 106 determines whether or not the tap water W140 is supplied according to the water level (≦ WL1) of the water receiving tank 120. Here, distribution control part 106 progresses to Step ST102, when it judges with supplying tap water W140 (YES). If distribution control unit 106 determines that tap water W140 is not supplied (NO), flow control unit 106 proceeds to step ST103.

  In step ST102, the distribution control unit 106 resets the time count by the first time counter unit 104 and ends the process of this flowchart. Thus, when the tap water W140 is flowing through the tap water supply line L130, the distribution control unit 106 ends the process without counting time by the first time counter unit 104.

On the other hand, if the distribution control unit 106 determines NO in step ST101, the first time counter unit 104 counts time in step ST103.
In step ST104, the distribution control unit 106 determines whether or not the time count (value) by the first time counter unit 104 exceeds the first set time. Here, when the distribution control unit 106 determines that the time count has exceeded the first set time (YES), the flow control unit 106 proceeds to step ST106. If distribution control unit 106 determines that the time count does not exceed the first set time (NO), it proceeds to step ST111.

  In step ST106, the distribution control unit 106 opens the tap water replenishment water valve 133 and distributes the tap water W140 from the tap water supply line L130 toward the water receiving tank 120. As a result, the tap water W140 staying in the pipe of the tap water supply line L130 is extracted and supplied to the water receiving tank 120.

  In step ST107, the distribution control unit 106 uses the second time counter unit 105 to count time.

  Subsequently, in step ST108, the distribution control unit 106 determines whether or not the time count (value) by the second time counter unit 105 exceeds the second set time. Here, if the distribution control unit 106 determines that the time count has exceeded the second set time (YES), the flow control unit 106 proceeds to step ST109. In addition, when the distribution control unit 106 determines that the time count does not exceed the second set time (NO), the process of this flowchart ends.

  As described above, when the time count by the second time counter unit 105 does not exceed the second set time, the tap water W140 is continuously extracted from the tap water supply line L130. For this reason, the distribution control unit 106 ends the process without resetting the time count by the second time counter unit 105.

In step ST109, the distribution control unit 106 resets the time count by the first time counter unit 104.
Subsequently, in step ST110, the distribution control unit 106 resets the time count by the second time counter unit 105 and ends the process of this flowchart.

  On the other hand, if it is determined NO in step ST104, distribution control unit 106 closes tap water supply water valve 133 in step ST110 and stops the distribution of tap water W140 from tap water supply line L130 to receiving tank 120. To do. Thereby, extraction of the tap water W140 from the tap water supply line L130 is completed, and the supply of the tap water W140 to the water receiving tank 120 is stopped.

  In addition, after determining that the time count has exceeded the second set time (YES) in step ST108, the distribution control unit 106 executes the processes of step ST109 and step ST110 and ends the process of this flowchart. In this case, the control for closing the tap water supply valve 133 is executed in the processing of the following flowchart. That is, when the processing of this flowchart is started next, the determinations of step ST101 and step ST104 are respectively NO, and the process proceeds from step ST104 to step ST111. In step ST111, as described above, the tap water supply water valve 133 is closed, the extraction of the tap water W140 from the tap water supply line L130 is finished, and the supply of the tap water W140 to the water receiving tank 120 is stopped. As described above, when the time count of the second time counter unit 105 exceeds the second set time, the supply of the tap water W140 to the water receiving tank 120 is stopped in the process of the next flowchart.

According to the water treatment system 100 of 1st Embodiment mentioned above, the following effects are show | played, for example.
The water treatment system 100 according to the first embodiment includes a first time counter unit 104 that counts the time when the supply of tap water W140 from the tap water supply line L130 to the water receiving tank 120 is stopped, and a first time counter unit 104. When the time count reaches the first set time, the tap water supply water valve 133 is controlled so that the tap water W140 is supplied from the tap water supply line L130 to the water receiving tank 120 regardless of the water level of the water receiving tank 120. A distribution control unit 106.

  Therefore, when the first set time has elapsed since the supply of the tap water W140 from the tap water supply line L130 to the water receiving tank 120 has stopped, the tap water W140 that has accumulated in the pipe of the tap water supply line L130 is contaminated. The water is extracted before being supplied to the water receiving tank 120. Therefore, in the water treatment system 100 that can supply both the treated water W130 and the tap water W140 to the water receiving tank 120, the contaminated tap water W140 can be prevented from being supplied to the water receiving tank 120 as much as possible.

  Moreover, the water treatment system 100 of 1st Embodiment is further provided with the 2nd time counter part 105 which time-counts the time which supplied the tap water W140 to the receiving tank 120 from the tap water supply line L130. The distribution control unit 106 controls the tap water replenishing water valve 133 so as to supply the tap water W140 from the tap water supply line L130 to the receiving tank 120 regardless of the water level of the receiving tank 120. 2 When the time count by the time counter unit 105 reaches the second set time, the tap water supply water valve 133 is controlled so as to stop the supply of the tap water W140 from the tap water supply line L130 to the water receiving tank 120. I am doing so.

  Therefore, when the second set time has elapsed since the tap water W140 staying in the pipe of the tap water supply line L130 is supplied to the water receiving tank 120, the tap water W140 from the tap water supply line L130 to the water receiving tank 120 is used. Supply stops. According to this, regardless of the operation status of the water treatment system 100, a certain amount of the tap water W140 staying in the pipe of the tap water supply line L130 can be extracted. Moreover, since the tap water W140 is not supplied more than necessary from the tap water supply line L130 to the water receiving tank 120, the overflow of the water receiving tank 120 can be avoided as much as possible.

  Next, a second embodiment of the present invention will be described. The second embodiment will be described mainly with respect to differences from the first embodiment. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. For the points not specifically described in the second embodiment, the description of the first embodiment is applied or incorporated as appropriate.

Second Embodiment
Next, the water treatment system 100A of 2nd Embodiment of this invention is demonstrated.
Since the basic configuration of the water treatment system 100A of the second embodiment is the same as that of the water treatment system 100 of the first embodiment, illustration is omitted. (100A) in FIG. 1, (101A), and (101A) in FIG. 2 show the water treatment system 100A and the system control apparatus 101A of the second embodiment, respectively.

  In the control unit 102 of the system control apparatus 101A in the second embodiment, the distribution control unit 106 receives the water tank 120 from the treated water supply line L120 when the time count by the first time counter unit 104 reaches the first set time. Only when the treated water replenishing water valve 132 is controlled so as to supply the treated water W130 to the water tank, the tap water is supplied from the tap water supply line L130 to the water receiving tank 120 regardless of the water level of the water receiving tank 120 detected by the water level gauge 134. The point which controls the tap water supplementary water valve 133 so that the water W140 may be supplied differs from 1st Embodiment.

  Thus, in the water treatment system 100A of the second embodiment, when the time count by the first time counter unit 104 reaches the first set time, the treated water W130 is supplied from the treated water supply line L120 to the water receiving tank 120. When the treated water replenishment water valve 132 is controlled as described above, the tap water W140 is extracted from the tap water supply line L130. On the other hand, when the treated water replenishment water valve 132 is not controlled to supply the treated water W130 from the treated water supply line L120 to the water receiving tank 120, the tap water W140 is not extracted from the tap water supply line L130. I am doing so.

  Other configurations related to the water treatment system 100A of the second embodiment are the same as the configurations (including configurations related to control) related to the water treatment system 100 of the first embodiment. Therefore, the description about the structure regarding the water treatment system 100 of 1st Embodiment is used, and the description about the structure regarding 100 A of water treatment systems of 2nd Embodiment is abbreviate | omitted.

  Next, in the water treatment system 100A of the second embodiment, an operation of extracting the tap water W140 from the tap water supply line L130 in conjunction with the supply of the treated water W130 will be described with reference to the flowchart shown in FIG. FIG. 4 is a flowchart showing an operation of extracting tap water W140 from the tap water supply line L130 in conjunction with the supply of the treated water W130 in the water treatment system 100A of the second embodiment. The basic processing of the flowchart in the second embodiment is the same as that of the flowchart (FIG. 1) in the first embodiment. Here, only differences from the first embodiment will be described.

  Steps ST201 to ST204 in the flowchart of the second embodiment (FIG. 4) are the same as steps ST101 to ST104 in the flowchart of the first embodiment (FIG. 3). Step ST206 to step ST211 in the flowchart of the second embodiment (FIG. 4) are the same as step ST106 to step ST111 in the flowchart of the first embodiment (FIG. 3).

  As shown in FIG. 4, in step ST204, distribution control unit 106 determines that the time count (value) by first time counter unit 104 has exceeded the first set time (YES), it proceeds to step ST205. move on. In step ST205, the distribution control unit 106 determines whether or not the treated water W130 is being supplied from the treated water supply line L120 to the water receiving tank 120. Here, distribution control part 106 progresses to Step ST206, when it judges with supplying treated water W130 (YES). The subsequent processing is the same as when processing proceeds to step ST105 in FIG.

Thus, in the water treatment system 100A of the second embodiment, only in the case of YES in step ST205, that is, the treated water replenishment water valve 132 so as to supply the treated water W130 from the treated water supply line L120 to the water receiving tank 120. The tap water replenishing water valve 133 is controlled so that the tap water W140 is supplied from the tap water supply line L130 to the water receiving tank 120 regardless of the water level of the water receiving tank 120 only when the water level is controlled.
Moreover, when it determines with the distribution control part 106 not supplying the treated water W130 (NO), it progresses to step ST211. The subsequent processing is the same as when processing proceeds to step ST110 in FIG.

According to the water treatment system 100A of the second embodiment described above, for example, the following effects can be obtained in addition to the effects of the first embodiment.
In the water treatment system 100 </ b> A of the second embodiment, the distribution control unit 106 treats the treated water W <b> 130 from the treated water supply line L <b> 120 to the water receiving tank 120 when the time count by the first time counter unit 104 reaches the first set time. Only when the treated water replenishing water valve 132 is controlled so as to supply water, the tap water replenishing water is supplied so that the tap water W140 is supplied from the tap water supply line L130 to the water receiving tank 120 regardless of the water level of the water receiving tank 120. The valve 133 is controlled.

  Therefore, even if the tap water W140 is supplied from the tap water supply line L130 to the water receiving tank 120, the water level of the makeup water W110 stored in the water receiving tank 120 is set to the water levels WL2 to WL3 without overflowing the water receiving tank 120. Can be kept in range.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and can be implemented in various forms.

  In the first and second embodiments, when the water level of the water receiving tank 120 detected by the water level gauge 134 is less than WL2, the tap water W140 may be supplied from the tap water supply line L130 to the water receiving tank 120. . That is, the water level WL1 at which the supply of the tap water W140 is started may be set below the water level WL2 at which the supply of the treated water W130 is started as in the above embodiment, or may be set at the same level as the water level WL2. May be.

  In the first and second embodiments, the tap water W140 extracted from the pipe of the tap water supply line L130 may be discharged outside the system without being supplied to the water receiving tank 120. Moreover, you may make it supply the tap water W140 extracted from the inside of the piping of the tap water supply line L130 to apparatus other than the water receiving tank 120 using treated water.

  In the first and second embodiments, the raw water W120 is not limited to ground water (well water), but may be produced by filtering water introduced from a river or a reservoir. In addition, the preliminary water supply supplied to the water receiving tank 120 is not limited to tap water, and can be used as long as it is equal to or better than the treated water W130. For example, when other fresh water generation systems are installed and surplus filtered water, soft water, pure water, etc. can be obtained, these can be used as preliminary water supply.

  In the first and second embodiments, when the supply of tap water W140 from the tap water supply line L130 to the water receiving tank 120 is stopped before the time count by the second time counter unit 105 reaches the second set time, The remaining tap water W140 may be supplied at the next water supply.

  In the second and second embodiments, the first set time for which the first time counter unit 104 counts time may be changed based on the water temperature. For example, when the water temperature is high, bacteria and the like are likely to propagate, so the first set time is shortened. On the other hand, when the water temperature is low, miscellaneous bacteria and the like hardly propagate, so the first set time is lengthened.

100, 100A Water treatment system 101, 101A System control device 102 Control unit 103 Memory 104 First time counter unit (preliminary water supply stop time measuring means)
105 Second time counter (preliminary water supply time measuring means)
106 Distribution control unit (distribution control means)
110 Filtration device 120 Receiving tank 131 Raw water pump (processed water distribution means)
132 Treated water replenishment water valve (treated water distribution means)
133 Tap water supply water valve (Preliminary water supply and distribution means)
134 Water level gauge (water level detection means)
L110 Raw water supply line L120 Treated water supply line L130 Tap water supply line L140 Reserved water supply line W110 Makeup water W120 Raw water W130 Treated water W140 Tap water (preliminary feed water)

Claims (3)

A water tank,
A treated water supply line for supplying treated water produced by filtering raw water to the water receiving tank;
A preliminary water supply line for supplying preliminary water to the water receiving tank;
Treated water distribution means for distributing treated water to the water receiving tank via the treated water supply line;
Via the preliminary water supply line, preliminary water distribution means for distributing preliminary water to the water receiving tank;
Preliminary water supply stoppage time measuring means for timing the time when the supply of preliminary water supply from the preliminary water supply line to the water receiving tank is stopped;
Water level detecting means for detecting the water level of the water receiving tank;
When the water level of the water receiving tank detected by the water level detecting means is within a predetermined water level range, the treated water circulation means is controlled to supply treated water from the treated water supply line to the water receiving tank, When the water level of the water receiving tank detected by the water level detection means is less than the lower limit of the predetermined water level range or the preliminary feed water supply start water level below the lower limit of the water level range, the preliminary feed water supply line controls said preliminary water circulation unit to supply the pre-water supply to the water tank, in no event the time measurement by the preliminary feed supply stop time counting means has reached the set time, the received detected by the water level detecting means the, the preliminary water circulation hand to provide backup water supply from the preliminary feed supply line to the receiving tank when between the water level of the aquarium and the upper limit of the predetermined level range and the preliminary water supply start level And distribution control means for controlling,
A water treatment system comprising. The distribution control means includes
When the time measured by the preliminary water supply stoppage time measuring means reaches a set time, the water level of the water receiving tank detected by the water level detecting means is between the upper limit of the predetermined water level range and the preliminary water supply start water level. when only when that controls the processing water circulation unit to supply treated water to the water tank from the treated water supply line, to supply the pre-water supply to the water tank from the front Symbol preliminary feed supply line The water treatment system of Claim 1 which controls the said preliminary | backup water supply distribution | circulation means. A preliminary water supply time measuring means for measuring time for supplying the preliminary water supply from the preliminary water supply line to the water receiving tank;
The distribution control means includes
When the water level of the water receiving tank detected by the water level detection means is between the upper limit of the predetermined water level range and the preliminary water supply start water level, the preliminary water supply is supplied from the preliminary water supply line to the water receiving tank. As described above, when the time of the preliminary water supply time measuring means reaches a set time while controlling the preliminary water supply circulation means, supply of the preliminary water supply from the preliminary water supply line to the water receiving tank is performed. The water treatment system according to claim 1 or 2, wherein the preliminary feed water circulation means is controlled to stop.

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