JP2018053888A - Feed water supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose a feed water supply system capable of indicating an integrated operation count or integrated operation time for each pump according to the request of users and restricting the users from hypersensitively reacting in response to the information of the integrated operation count or integrated operation time for each pump.SOLUTION: A feed water supply system for supplying water to a building comprises: a pump; an operation display part; and a control part for controlling the pump. The operation display part receives a setting input for controlling the feed water supply system and is configured to be able to display the information on the operation of the feed water supply system. The operation display part has a first display mode which does not display the integrated operation count and the integrated operation time for the pump; and a second display mode which displays at least one of the integrated operation count and the integrated operation time for the pump, as a display mode displaying information.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a water supply apparatus.

  The water supply system of the water supply system uses the water tank system that temporarily stores the water in the water main in the water receiving tank and pressurizes the water in the water receiving tank with a pump, and the main pressure of the water main. A directly connected water supply system that supplies water to a water supply target by increasing the pressure with a pump is known. In the water supply device, the pump is controlled by the control unit, and for example, the estimated terminal pressure constant control or the target pressure constant control is performed based on the discharge side pressure of the pump.

  When the water supply apparatus includes a plurality of pumps, control of the number of operating pumps and control of rotating the pump to be activated are performed according to the amount of water supply. Since the progress of wear and deterioration of the pump is related to the number of accumulated operation times and the accumulated operation time of the pump, the rotation control of the pump is performed so that the number of accumulated operation times and the accumulated operation time of a plurality of pumps are as equal as possible.

  Regardless of the rotation control of the pump, if there is a large deviation in the accumulated operation time and the number of accumulated operations for each pump, it can be assumed that some abnormality has occurred, and it is a chance to investigate the cause of the abnormality There is. Moreover, in a water supply apparatus, the time of pump replacement | exchange etc. can be estimated by confirming an integral operation time and the frequency | count of an integral operation in the case of a periodic check every six months or one year. For this reason, the accumulated operation time and the accumulated number of operations for each pump are displayed on the operation panel of the water supply device or stored in an EEPROM (a read / write enabled storage element with guaranteed power failure).

JP 2001-263255 A Japanese Patent No. 3761653 Specification

  The start and stop of the pump in the water supply apparatus is determined by the use of water by the consumer. Therefore, even if the rotation control of the pump is performed, it is not completely leveled, and in particular, the accumulated operation time for each pump may be biased. On the other hand, in a water supply apparatus that supplies tap water, there are few foreign substances contained in the carrier liquid, and the design life is tens of thousands of hours and tens of thousands of times as long as the cumulative operation time and the number of operation of the pump. For this reason, even if there is a slight deviation (several tens of hours, several tens of times) in the accumulated operation time and the number of accumulated operations for each pump, the design life of the pump is insignificant.

  However, if the user of the water supply device can easily check the number of accumulated operations or the number of accumulated operations via the operation panel, even if there is no abnormality or an effect on the design life of the pump, There is a possibility that the user reacts sensitively to the bias. In this case, the number of inquiries to the manufacturing company or the management company increases, and the maintenance of the water supply apparatus becomes excessive, leading to an increase in the running cost of the water supply apparatus.

In addition, due to recent demands for energy saving, building management companies and the like may appropriately monitor whether a plurality of pumps are operating properly. Such a management company may request confirmation of the accumulated operation time and the accumulated number of operations for each pump. As an example, in a factory facility, the water supply device may cooperate with other equipment (for example, a refrigerator), and as part of equipment maintenance and inspection, check and record the accumulated operation time and number of accumulated operations for each pump every day. There is also a site.

  Furthermore, even when the water supply apparatus includes a single pump, there are cases where it is desired to record the accumulated operation time and the accumulated number of operations of the pump in order to estimate the timing of pump replacement or the like. Even in this case, if the user of the water supply device can easily check the cumulative operation count or the cumulative operation count via the operation panel, the user can react sensitively to this information, or information displayed on the operation panel. Too much can cause user confusion.

  This invention is made | formed in view of the situation mentioned above, and makes it one of the objectives to propose the water supply apparatus which can display the frequency | count of integration operation or integration operation time for every pump according to a user's request. It is another object of the present invention to propose a water supply device that can suppress a user's sensitive reaction to the number of accumulated operation times or the accumulated operation time for each pump.

(Means 1)
The water supply apparatus of the present invention is a water supply apparatus for supplying water to a building, and includes a pump, an operation display unit, and a control unit that controls the pump. The operation display unit is configured to receive a setting input for controlling the water supply apparatus and to display information related to the operation of the water supply apparatus. The operation display unit displays, as a display mode for displaying information, at least one of a first display mode for displaying information that does not include the pump integrated operation time and the integrated operation count, and the pump integrated operation time and the integrated operation count. And a second display mode for displaying information including the second display mode.

  With this configuration, when the display mode is the first display mode, the water supply device of the present invention does not display the pump accumulated operation time and the accumulated number of operations, and thus can prevent the user from reacting sensitively to these information. . Further, when the display mode is the second display mode, at least one of the accumulated operation time and the accumulated number of operations of the pump is displayed, so that these can be confirmed according to the user's request. Here, when the water supply apparatus includes a plurality of pumps, the integrated operation time of the pump and the integrated operation number of the pumps are preferably the integrated operation time for each of the plurality of pumps and the integrated operation number of each of the plurality of pumps. .

(Means 2)
In the water supply device described in the means 1, the operation display unit may set the display mode to the second display mode when a predetermined operation or a predetermined authentication is performed.
In this way, the user can confirm at least one of the accumulated operation time and the accumulated number of operations of the pump by performing a predetermined operation or a predetermined authentication on the operation display unit.

(Means 3)
In the water supply apparatus according to Means 1 or 2, the operation display unit may set the display mode to the first display mode when a predetermined period has elapsed in the second display mode.
In this way, even if the display mode is set to the second display mode, when the predetermined period elapses, the first display mode is set and the accumulated operation time and the accumulated operation number of the pump are not displayed. For this reason, it can suppress that a user reacts sensitively to the display of an operation display part.

(Means 4)
It is a water supply apparatus as described in any one of the means 1 to 3, Comprising: The 2nd display mode is the 3rd display mode which displays the information containing either one among the integrated operation time of a pump, and the frequency | count of integrated operation as information In addition, a fourth display mode for displaying information including both the accumulated operation time of the pump and the accumulated operation number as information may be provided.
In this way, information to be displayed can be set according to the user's request.

(Means 5)
The water supply device according to any one of the means 1 to 4, wherein the control unit or the operation display unit may further include a communication unit configured to transmit information to an external display.
In this way, information can be displayed by an external display.

(Means 6)
In the water supply device according to the means 5, the communication unit may transmit information that does not include the accumulated operation time of the pump and the accumulated operation number as information when the display mode of the operation display unit is the first display mode. . Then, when the display mode of the operation display unit is the second display mode, information including at least one of the accumulated operation time and the accumulated number of operations of the pump may be transmitted as information.
In this way, the information transmitted to the external display can be made in accordance with the display mode of the operation display unit, and at least one of the accumulated operation time and the accumulated operation number for each pump can be set according to the user's request. In addition to being able to confirm, it is possible to suppress the user from being sensitive to the display on the external display.

(Means 7)
In the water supply device according to the means 5, the communication unit, based on the signal from the external indicator, includes information that does not include the pump integrated operation time and the integrated operation number as information when the signal does not satisfy the predetermined condition. You may send it. When the signal satisfies a predetermined condition, information including at least one of the accumulated operation time and the accumulated operation number of the pump may be transmitted as information.
If it carries out like this, based on the signal from an external indicator, it can change whether the integrated operation time and the frequency | count of integrated operation of a pump are transmitted from a communication part.

(Means 8)
The water supply device according to any one of means 5 to 7, wherein the communication unit may include a control unit side antenna unit that receives radio waves from an external display and converts the radio waves into electric power.

(Means 9)
It is a water supply apparatus as described in any one of the means 5 to 8, Comprising: A communication part may transmit information to an external display by near field communication (NFC).

(Means 10)
A water supply apparatus according to another aspect of the present invention is a water supply apparatus for supplying water to a building, and includes a pump and a control unit that controls the pump. The control unit includes a communication unit configured to transmit information related to the operation of the water supply apparatus to an external display. And based on the signal from an external display, a communication part transmits the information which does not include the integrated operation time of a pump, and the frequency | count of an integrated operation as information, when a signal does not satisfy | fill predetermined conditions. When the signal satisfies a predetermined condition, information including at least one of the accumulated operation time and the accumulated operation number of the pump is transmitted as information.

  With this configuration, the water supply device of the present invention does not transmit the accumulated operation time and the number of accumulated operations of the pump to the external display when the signal from the external display does not satisfy the predetermined condition. It can suppress that the user who confirmed the display reacts sensitively. In addition, when the signal satisfies the predetermined condition, the water supply device transmits at least one of the accumulated operation time and the accumulated operation number of the pump to the external display, so that the user confirms these according to the request. Can do.

It is a schematic diagram which shows the water supply apparatus which concerns on embodiment of this invention. It is a figure which shows a specific example of an operation display part (operation panel). It is a figure which shows an example of the specific display of 7 segment LED. It is a flowchart which shows an example of a driving information display process. It is a figure which shows an example of the specific display of 7 segment LED at the time of a 2nd display mode. It is a figure which shows an example of the specific display of 7 segment LED at the time of a 2nd display mode. It is a figure which shows the control part and external display of a 1st modification. It is a figure which shows the control part and external display of a 2nd modification.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or corresponding components are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a schematic diagram illustrating a water supply apparatus according to an embodiment of the present invention. This water supply device is a device for supplying tap water mainly to a building (water supply target) such as a detached house, a condominium, an office building, a commercial facility, or a school. As shown in FIG. 1, the suction port of the water supply apparatus 100 is connected to a water pipe (water main pipe) 4 or a water receiving tank (not shown) through an introduction pipe 5. A water supply pipe 7 is connected to the discharge port of the water supply apparatus 100, and the water supply pipe 7 communicates with a water tap (for example, a faucet) 10 of each building. The water supply apparatus 100 increases the pressure of water from the water pipe (or water receiving tank) and supplies the water to the water taps 10 of the building.

  The water supply apparatus 100 includes a pump 2, a motor 3 as a drive source for driving the pump 2, and an inverter 20 as a drive apparatus for driving the motor 3 at a variable speed. Further, the water supply apparatus 100 includes a check valve 22, a flow switch 24, a pressure sensor 26, and a pressure tank 28 on the discharge side (downstream side) of the pump 2.

  In the example shown in FIG. 1, two sets of the pump 2, the motor 3, the check valve 22, and the flow switch 24 are provided, and these are provided in parallel. Three or more sets of the pump 2, the motor 3, the check valve 22, and the flow switch 24 may be provided. By providing a plurality of pumps 2, when some of the pumps 2 cannot be operated, water supply is continued with other operable pumps 2 so as to avoid water interruption as much as possible.

  The backflow prevention device 25 is provided in the introduction pipe 5 connected to the suction port of the water supply device 100 and prevents the backflow of water from the water supply device 100 to the water pipe 4. A pressure sensor 21 is provided on the upstream side of the backflow prevention device 25. The pressure sensor 21 is a pressure measuring device for measuring the suction side pressure of the pump 2.

  The check valve 22 is provided in a discharge pipe connected to the discharge port of the pump 2, and prevents a back flow of water when the pump 2 is stopped. A flow switch 24 is provided on the downstream side (secondary side) of the check valve 22. The flow switch 24 is a flow rate detector that detects that the flow rate of water flowing through the discharge pipe has decreased to a predetermined value, that is, an excessive amount of water. A pressure sensor 26 and a pressure tank 28 are provided further downstream of the flow switch 24 in the discharge pipe. The pressure sensor 26 is a pressure measuring device for measuring the discharge side pressure of the pump 2 (hereinafter, the discharge side pressure indicates a pressure value measured by the pressure sensor 26). The pressure tank 28 is a pressure retainer for retaining the discharge side pressure while the pump 2 is stopped.

The water supply apparatus 100 includes a control unit 40 that controls the water supply operation. As shown in FIG.
The control unit 40 includes a storage unit 47, a calculation unit 48, an I / O unit 50, a setting unit 46, and a display unit 49. The setting unit 46 and the display unit 49 are provided in the operation panel (operation display unit) 51 of the water supply apparatus 100.

  The setting unit 46 is used to set various setting values used for water supply by an external operation. Various setting values set in the setting unit 46 are stored in the storage unit 47. As an example, the user can input the stop pressure, the start pressure, the target pressure PA, the minimum pressure PB in the estimated terminal pressure constant control, and other information used for the control via the setting unit 46. In the present embodiment, the setting unit 46 includes a setting button 55 for setting a setting mode for setting various setting values. When the setting button 55 is pressed for a predetermined time (for example, 1 second), the operation display unit (operation panel) 51 enters the setting mode, and the user can refer to and change various setting values.

In addition, the user operates the setting unit 46 to change the display mode of the operation display unit 51 from the first display mode for general users and the second display mode for special users and maintenance workers. And can be switched. The current display mode of the operation display unit 51 is stored in the storage unit 47. In the present embodiment, the display mode of the operation display unit 51 is normally set to the first display mode. The display mode may be switched when the setting button 55 is pressed for a predetermined time (for example, 1 second) as in the setting of various setting values. The display mode may be switchable when a predetermined protection mode is cancelled. For example, the operation display unit 51 may release the protection mode when two or more predetermined buttons are pressed simultaneously, or when a plurality of predetermined buttons are pressed in a predetermined order. The protection mode may be canceled. Furthermore, cancellation | release of such protection mode may be performed by performing operation which becomes an error input as operation for setting the driving | operation of the water supply apparatus 100. FIG. In this way, it is possible to prevent the display mode from being switched unintentionally. Moreover, when the protection mode is canceled, it is possible to prevent the water supply device 100 from being erroneously operated by changing the setting related to the control of the water supply device 100. Furthermore, the display mode of the operation display unit 51 may be switched to the second display mode when predetermined authentication is performed on the water supply apparatus 100 instead of or in addition to the operation of the setting unit 46. For the predetermined authentication, various methods can be used, for example, a magnetic card or IC (Integrated).
(Circuit) A reader that reads data such as a chip may be provided in the water supply apparatus 100, and the user may read the data from the reader of the water supply apparatus 100.

  The display unit 49 functions as a user interface, and various data such as set values stored in the storage unit 47, the current operation state (operation state) of the pump 2, for example, operation or stop of the pump 2, operation frequency, Current, suction side pressure, discharge side pressure, feed water pressure, etc. are displayed. The display unit 49 displays the accumulated operation time and the accumulated operation number for each pump according to the display mode. Here, “integrated operation time” is the total time of operation after the pump 2 is newly provided or replaced, and “integrated operation number” is the time after the pump 2 is newly provided or replaced. This is the number of times that the engine has been started.

FIG. 2 is a diagram illustrating a specific example of the operation display unit (operation panel). As shown in the figure, the operation display unit 51 includes a 7-segment LED 500 that displays information related to the operation of the water supply apparatus 100 (for example, the discharge-side pressure of the pump 2, the frequency (number of rotations), and the power supply voltage acting on the pump). In the present embodiment, the 7-segment LED 500 is configured by arranging five 7-segment LEDs on the left and right. The first 7-segment LED from the left displays the identification symbol (for example, pump No.) of the currently selected pump 2 as the pump identification symbol display area. Further, the other four 7-segment LEDs are configured to display information on the currently selected pump 2 or other information on the water supply apparatus 100 as a pump information display area. In the present embodiment, the display of the pump identification symbol display area is displayed with blinking so that it can be easily distinguished from other displays.

  In addition to the 7-segment LED 500, the operation display unit 51 includes an abnormality display lamp 502 and a water level lamp 503 that indicates the state of the water receiving tank 6 (full / low water / drought) by the water receiving tank method. The operation display unit 51 also displays the pump No. of the pump 2. A pump selection button 511 for selecting a switch, an up / down button 512 for switching display and incrementing and decrementing various set values, a test / automatic button 513 for switching between test operation and automatic operation of the pump 2, an operation display unit A setting button 55 for setting 51 to a setting mode, a function / monitor button 514 for switching display as a monitor key, and a buzzer stop / alarm release button 515 for releasing an alarm when an alarm is generated and stopping a buzzer. Further, the operation display unit 51 includes an operation button 516 for operating the pump 2 and a stop button 517 for stopping the pump 2.

  FIG. 3 is a diagram showing an example of a specific display of 7-segment LEDs. In the example shown in FIG. 3, the discharge-side pressure, the suction-side pressure, and the power supply voltage are displayed on the 7-segment LED 500 as information related to the operation of the directly connected water supply system 100. Although details will be described later, when the pump selection button 511 is pressed, information on the pump 2 for each pump is displayed.

  In the present embodiment, when the up / down button 512 is pressed, the operation display unit 51 switches and displays the discharge side pressure, the suction side pressure, and the power supply voltage. Here, the operation display unit 51 displays a symbol imitating “H” when the pressure (discharge side pressure and suction side pressure) is displayed on the first 7 segment LED from the right of the 7 segment LED 500. When displaying the power supply voltage, a symbol imitating “V” is displayed. The operation display unit 51 displays a symbol imitating “o” when the discharge side pressure is displayed on the first 7 segment LED (pump identification information display area) from the left of the 7 segment LED 500. When the suction side pressure is displayed, a symbol imitating “i” is displayed. Thereby, the user can confirm the discharge side pressure, the suction side pressure, and the power supply voltage by looking at the display of the 7-segment LED 500. In addition, the display of the symbol imitating “o” and “i” in the pump identification symbol display area may be displayed with blinking so that it can be easily distinguished from the display of the information regarding the operation. When the discharge side pressure and the suction side pressure are detected for each pump, the pump No. And identification symbols (“o”, “i”) corresponding to the displayed information may be alternately displayed. Thus, the identification information for distinguishing the discharge side pressure and the suction side pressure is the pump No. Therefore, the user can distinguish between the discharge side pressure and the suction side pressure without providing a new lamp or the like. The operation display unit 51 is not limited to the examples shown in FIGS. 2 and 3, and various known operation panels such as a liquid crystal screen using a touch input method or a push button method may be used instead of the 7-segment LED 500. Can be used.

  As the storage unit 47, a memory such as a RAM or a ROM is used. The storage unit 47 stores various data, for example, calculation result data (operation time, integrated value, etc.) in the calculation unit 48, pressure values (suction side pressure, discharge side pressure), data input through the setting unit 46, and I Data or the like input through the / O unit 50 or output through the I / O unit 50 is stored. In the present embodiment, the data related to the operation of the pump 2 stored in the storage unit 47 includes an integrated operation time and an integrated operation count for each pump. The accumulated operation time and the accumulated number of operations for each pump are reset by a maintenance worker when the pump 2 is replaced, for example. Further, the accumulated operation time and the accumulated operation number for each pump are periodically stored in the nonvolatile memory of the storage unit 47.

A port or the like is used as the I / O unit 50. The I / O unit 50 includes pressure sensors 21 and 2.
6 and the signal of the flow switch 24 are acquired, and the acquired signal information is sent to the calculation unit 48. In the present embodiment, the motor 3 is provided with a rotation speed sensor (not shown) that detects the rotation speed of the motor 3. The I / O unit 50 acquires the rotation speed of the motor 3 detected by the rotation speed sensor via the inverter 20, and sends the acquired signal information to the calculation unit 48. However, the rotational speed of the motor 3 is not limited to that detected by the rotational speed sensor provided in the motor 3, and may be estimated from the output frequency of the inverter 20. The I / O unit 50 also performs input / output of signals in communication. In this embodiment, the pump 2 and the motor 3 are synchronized, and the rotational speed of the pump 2 and the rotational speed of the motor 3 are the same. When a transmission is interposed between the pump 2 and the motor 3, the rotation speed of the pump 2 is determined based on the transmission gear ratio (current transmission gear ratio when variable) and the motor 3 rotation speed. You may get it. Moreover, the rotation speed of the pump 2 is not limited to what is acquired based on the rotation speed of the motor 3, and may be acquired from a rotation speed sensor that directly detects the rotation speed of the pump 2.

  A CPU is used as the calculation unit 48. The calculation unit 48 sets, measures, and calculates various data for operating the pump 2 based on a program and various data stored in the storage unit 47 and a signal input from the I / O unit 50. Etc. An output from the calculation unit 48 is input to the I / O unit 50.

  Further, the I / O unit 50 and the inverter 20 are connected to each other by communication means such as RS422, RS232C, and RS485. Control signals such as various set values, frequency command values, start / stop signals (operation / stop signals) are sent from the I / O unit 50 to the inverter 20, and the actual frequency is transmitted from the inverter 20 to the I / O unit 50. The operation status (operating state) such as value and current value is sent sequentially.

  An analog signal and / or a digital signal can be used as a control signal transmitted and received between the I / O unit 50 and the inverter 20. For example, an analog signal can be used for the rotation frequency or the like, and a digital signal can be used for the operation stop command or the like.

  Then, control of the water supply apparatus 100 by the control part 40 is demonstrated. When the discharge side pressure is reduced to a predetermined starting pressure while the pump 2 is stopped, the control unit 40 starts the pump 2. Specifically, the control unit 40 issues a command to the inverter 20 to start driving the motor 3. During the operation of the pump 2, control such as estimated terminal pressure constant control or target pressure constant control is performed by the set pressure (set pressure). Specifically, in the case of constant estimated terminal pressure control, the target pressure (SV) is set using the rotation speed of the pump 2 and the target pressure control curve, and in the case of constant target pressure control, the set pressure is set to the target pressure (SV). And Moreover, let discharge side pressure be present pressure (PV). Then, PID calculation is performed based on the deviation between SV and PV, and the command rotational speed of the pump 2 is set. Moreover, when there are a plurality of pumps as in the present embodiment, the control unit 40 also controls the number of pumps according to the amount of water by the number of pumps that can be activated simultaneously (the number of pumps in parallel operation).

  When the use of water in the building is reduced during the operation of the pump 2, the flow switch 24 detects an excessive amount of water and sends a detection signal to the control unit 40. The control unit 40 receives this detection signal, issues a command to the pump 2, increases the rotational speed of the pump 2 until the discharge side pressure reaches a predetermined operation stop pressure, accumulates the pressure in the pressure tank 28, and then stops the pump 2 ( Stop small amount of water). When water is used again in the building after the pump 2 has stopped for a small amount of water, the discharge side pressure drops below the starting pressure and the pump 2 starts. In addition, when there are a plurality of pumps as in this embodiment, it is preferable to rotate the pump 2 to be started to prevent water from staying in the pump 2. Further, as a method for detecting a small amount of water, other means such as a low load due to the current value of the motor 3 or a cutoff pressure may be used without using the flow switch 24.

FIG. 4 is a flowchart illustrating an example of the driving information display process. The operation information display process is executed by the control unit 40 while the water supply apparatus 100 is activated. In the driving information processing, first, the control unit 40 determines whether or not a request for changing the display mode of the operation display unit 51 to the second display mode has been made (step S100). In the present embodiment, as described above, the user operates the operation display unit (operation panel) 51 (setting unit 46) to perform a predetermined operation for switching the display mode from the first display mode to the second display mode. The control unit 40 determines that a request to set the display mode of the operation display unit 51 to the second display mode has been made.

  In the water supply apparatus 100 of the present embodiment, the first display mode is normally set as the display mode of the operation display unit 51. Now, consider the case where the first display mode is set as the display mode and no request to switch to the second display mode is made (S100: No). At this time, the control unit 40 does not change the display mode of the operation display unit 51 from the first display mode, and subsequently determines whether or not the time measurement value t is larger than the reference value tref (step S110). The time value t is a value indicating the time during which the display mode of the operation display unit 51 is set to the second display mode, and the comparison between the time value t and the reference value tref is set to the second display mode for a predetermined period. It is determined whether or not has elapsed. The reference value tref may be a value corresponding to a predetermined period, for example, a value corresponding to several minutes or several hours. Now, it is considered that the display mode of the operation display unit 51 is the first display mode, and it is determined that the time value t is less than the reference value tref (S130: No).

  Then, the control unit 40 determines whether or not the display mode of the operation display unit 51 is the first display mode (step S150). The control unit 40 refers to the display mode stored in the storage unit 47 and determines the current display mode of the operation display unit 51. As described above, now, the case where the display mode of the operation display unit 51 is the first display mode is considered (S150: Yes), and the control unit 40 determines the accumulated operation time and the accumulated operation number for each pump 2. Without including it, driving information is displayed on the operation display unit 51 (step S160), and the driving information display process is terminated. That is, when the display mode is the first display mode, the control unit 40 does not display the accumulated operation time and the accumulated number of operations for each pump 2 on the operation display unit 51.

  FIG. 5 is a diagram illustrating an example of specific display of the 7-segment LED in the first display mode. In the illustrated example, the operation display unit 51 displays a symbol imitating “1” on the first seven-segment LED (pump identification symbol display region) from the left. In addition, the operation display unit 51 displays the pump No. on the other 7-segment LED (pump information display area). Is displaying information of the pump 2 of “1”. In the first display mode, the frequency (the number of revolutions) of the pump 2 and the current of the pump 2 are displayed as information on the pump 2 for each pump, and the accumulated operation time and the accumulated number of operations of the pump 2 are not displayed. For example, the user can select display of pump information of any of the pumps 2 by pressing a pump selection button 511. Then, by pressing the up / down button 512, the frequency (rotation speed) and current of the pump 2 of the corresponding pump No. are switched and displayed as shown in FIG. In the present embodiment, an identification symbol indicating the type of information currently displayed is displayed on the first 7-segment LED from the right among the 7-segment LEDs 500. Specifically, in the example illustrated in FIG. 5, the operation display unit 51 displays a symbol imitating “F” when displaying the frequency, and imitating “A” when displaying the current. Is displayed.

  Thus, when the operation display unit (operation panel) 51 is in the first display mode, the control unit 40 does not display the accumulated operation time and the accumulated number of operations for each pump 2 on the operation display unit 51. Thereby, it can suppress that a general user reacts sensitively with respect to the bias | inclination of integration operation time and integration operation frequency.

When the user requests the display mode of the operation display unit 51 to be the second display mode (S100: Yes), the control unit 40 sets the display mode of the operation display unit 51 to the second display mode (step S110). ). Moreover, the control part 40 resets the time count t to the value 0, and starts time-measurement (step S120).

  Subsequently, the control unit 40 determines whether or not the time measurement value t is larger than the reference value tref (step S110). Now, it is considered that the display mode of the operation display unit 51 is switched to the second display mode, and the time measurement value t is determined to be less than the reference value tref (S130: No).

  Then, the control unit 40 determines whether or not the display mode of the operation display unit 51 is the first display mode (step S150). Now, it is considered that the display mode of the operation display unit 51 is the second display mode (S150: No), and the control unit 40 includes an operation display unit including the integrated operation time and the integrated operation number for each pump 2. Driving information is displayed in 51 (step S170), and the driving information display process is terminated. That is, when the display mode is the second display mode, the control unit 40 displays the accumulated operation time and the accumulated operation number for each pump 2 on the operation display unit 51.

  FIG. 6 is a diagram illustrating an example of a specific display of the 7-segment LED in the second display mode. In the example shown in FIG. 6, as in the example shown in FIG. Is displaying information of the pump 2 of “1”. In the second display mode, as the information of the pump 2 for each pump 2, in addition to the frequency (number of rotations) and current of the pump 2, the accumulated operation time and the accumulated number of operations of the pump 2 are displayed. For example, when the user presses the up / down button 512, the frequency (rotation speed), current, accumulated operation time, and accumulated operation count of the pump 2 are switched and displayed on the 7-segment LED 500 as shown in FIG. . In this embodiment, the value obtained by dividing the accumulated operation time and the accumulated operation number by 1000 is displayed on the 7-segment LED 500. The display of the accumulated operation time may be 1 hour as a unit time, or may be another time such as 1 minute, 1 second, or 1 day. Although not shown in FIG. 6, when displaying the accumulated operation time and the accumulated number of operations, the pump No. is displayed on the first 7-segment LED (pump identification symbol display area) from the left. And a symbol corresponding to the displayed information may be alternately flashed and displayed. As an example, when the operation display unit 51 displays the accumulated operation time of the pump 2, a symbol imitating “h” is displayed as the pump No. It may be displayed by blinking alternately with a symbol indicating. When the operation display unit 51 displays the cumulative number of operations of the pump 2, the operation model 51 displays a symbol simulating “c” as the pump number. It may be displayed by blinking alternately with a symbol indicating.

  Thus, when the operation display unit (operation panel) 51 is in the second display mode, the control unit 40 displays the accumulated operation time and the accumulated operation number for each pump 2 on the operation display unit 51. This makes it possible to meet the demands of users and maintenance workers who want to confirm or record these data.

  When the time measurement value t is larger than the reference value tref (S130: Yes), the control unit 40 sets the display mode of the operation display unit 51 to the first display mode (step S140), and executes the processing from step S150 onward. To do. As described above, the time measurement value t corresponds to the time during which the display mode of the operation display unit 51 is set to the second display mode. That is, the control unit 40 switches the display mode to the first display mode when the display mode of the operation display unit 51 is set to the second display mode and a predetermined period has elapsed. Thereby, the display mode of the operation display unit 51 is normally set to the first display mode. Further, the time measurement value t may be reset every time the user operates any button on the operation display unit (operation panel) 51 to start time measurement. This can prevent the user from switching from the second display mode to the first display mode during operation.

In the water supply device 100 according to the embodiment described above, when the display mode of the operation display unit (operation panel) 51 is the first display mode, the accumulated operation time and the accumulated number of operations for each pump 2 are not displayed as the operation information of the pump 2. . On the other hand, when the display mode of the operation display unit 51 is the second display mode, the accumulated operation time and the accumulated number of operations for each pump 2 are displayed as the operation information of the pump 2. Accordingly, it is possible to prevent the user from reacting sensitively to the deviation of the accumulated operation time and the accumulated operation frequency for each pump 2, and to the operation display unit 51 according to the demands of a specific user and a maintenance worker. Information can be displayed.

  Moreover, in the water supply apparatus 100 of the embodiment, the control unit 40 switches the display mode to the first display mode when the display mode of the operation display unit 51 is set to the second display mode and a predetermined period has elapsed. Set. Thereby, the display mode of the operation display part 51 can be normally set to the 1st display mode, and it can suppress that a general user reacts sensitively with respect to the deviation of integration operation time and integration operation frequency.

  However, the present invention is not limited to this example, and the control unit 40 may switch the display mode of the operation display unit 51 only when the display mode is switched by a user operation on the operation display unit 51 regardless of the elapsed time. . As an example of a specific method, the reference value tref is set to 0. As a result, at the site where the cumulative operation time and the cumulative number of operations need only be confirmed once during regular maintenance, the display mode of the operation display unit 51 is immediately changed to the first display mode after confirmation. For this reason, it is not necessary to wait until the measured value t reaches the reference value tref and confirm that the display mode of the operation display unit 51 is switched. Further, the second display mode may be continued without being canceled after the display mode of the operation display unit 51 is switched from the first display mode to the second display mode. As an example of a specific method, the reference value tref may be set to a value that is larger than the maximum countable value t. Then, at the site where the accumulated operation time and the number of accumulated operations for each pump are checked and recorded every day as part of equipment maintenance and inspection at factory facilities, etc., after changing the setting to the second display mode, always It can be displayed in 2 display mode. The reference value tref may be set and changed as a variable value from the operation display unit 51 or the like, or may be held in the storage unit 47 as a fixed value.

  In the embodiment, the operation display unit 51 displays the accumulated operation time and the accumulated number of operations for each pump 2 in the second display mode, but only one of them may be displayed. In addition, the operation display unit 51 includes, as the second display mode, a third display mode that displays only one of the accumulated operation time and the accumulated operation number for each pump 2, and the accumulated operation time and the accumulated operation number for each pump 2. And a fourth display mode for displaying both of them.

  In the embodiment, a plurality of pumps are used. However, the pump 2, the motor 3, the check valve 22 and the flow switch 24 may be one set, and a water supply device with one pump may be used. If the number of pumps is one, there is no bias in the accumulated operation time and the number of accumulated operations for each pump as in the above-described water supply device 100 of multiple pumps, but this water supply device is used as a small-scale water supply system such as a private house. Since 100 is used, there are few users who regularly check the accumulated operation time and the accumulated operation count. Therefore, for users who do not need to check the accumulated operation time and the accumulated operation frequency, as shown in FIG. 5, water supply such as “discharge pressure”, “frequency”, “current value”, etc. in the first display mode. By displaying only the current value in the apparatus 100 and simplifying the operation of the operation display unit 51, the operability can be improved. On the other hand, maintenance personnel who have specialized knowledge during regular maintenance switch to the second display mode, and as shown in FIG. 6, the life of the pump 2 is estimated from the accumulated operation time and the accumulated number of operations of the pump 2. This makes it possible to propose an appropriate maintenance time to the user.

(First modification)
FIG. 7 is a diagram illustrating a control unit and an external display according to a first modification. As illustrated, in the first modification, the control unit 40A includes a display unit 49, and an external display 70 is further provided. The external indicator 70 may be configured as a part of the water supply device 100,
It may be configured as an external device. The external display device 70 may be a display device that can display, change settings, and perform complicated operations that are the same as or more detailed than the operation panel (operation display unit) 51 described above.

  In the first modification, the control unit 40A further includes a communication unit 60, and is connected to the external display 70 by wired communication or wireless communication. Further, in the first modification, the operation panel 51 is provided with a reset button 52 and a clear button 53. By pressing the clear button 53, the control unit 40A clears only the display on the display unit 49. In addition, when the reset button 52 is pressed, the control unit 40A causes the abnormality determination of the pressure sensors 21 and 26 and other maintenance information (for example, operation time, number of start-ups, usage period of consumable parts, failure history) and the like. To reset.

  As the external display 70, for example, a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, a tablet, or a dedicated terminal device such as a remote monitor is adopted. In the first modification, a simple indicator such as a 7-segment LED and an indicator lamp can be employed as the display unit 49. Further, as the external display 70, a high-function display on a liquid crystal screen using a touch input method or a press button method can be adopted. In this case, simple information can be displayed on the display unit 49, a large amount of information can be displayed on the external display 70, and a plurality of settings can be changed at a time. With such a configuration, by displaying information related to the control of the pump 2 by the control unit 40A on the external display 70 (for example, the rotation speed of the pump 2, the suction side pressure, the discharge side pressure, etc.), The state of the water supply apparatus 100 can be recognized without misunderstanding. Moreover, the water supply apparatus 100 may be installed in an environment with much electrical noise such as a machine room or a pump room. In preparation for such a case, as the display unit 49, a display unit including a 7-segment LED, a display lamp, a mechanical press button, etc., which are more resistant to electrical noise than a liquid crystal display or a touch panel may be used. As a result, even when an abnormality occurs in the liquid crystal display or touch panel operation of the external display 70 due to electrical noise generated from the external environment, the minimum display and operation necessary for the operation of the water supply apparatus 100 by the display unit 49. It can be performed. Therefore, the water supply apparatus 100 can be installed even in an environment with a lot of electrical noise.

  Here, the control unit 40 </ b> A of the water supply apparatus 100 may change information to be transmitted to the external display device 70 according to the display mode of the operation display unit 51. As an example, when the operation display unit 51 is in the first display mode, the control unit 40A may not transmit the integrated operation time and the integrated operation number for each pump 2 as information related to the control of the pump 2. In addition, when the operation display unit 51 is in the second display mode, the control unit 40A may transmit the accumulated operation time and the accumulated operation number for each pump 2 as information related to the control of the pump 2. If it carries out like this, the information displayed on the external indicator 70 will be selected according to the display mode of the operation display part 51, and there can exist an effect similar to the water supply apparatus 100 of embodiment.

  Furthermore, the control unit 40 </ b> A of the water supply apparatus 100 may change information to be transmitted to the external display device 70 in accordance with a signal received from the external display device 70. As an example, when the control unit 40A determines, based on a signal received from the external display 70, that the communicating external display 70 is intended for a general user, the integrated operation time and integration for each pump 2 Do not send the number of operations. On the other hand, when the control unit 40A determines that the communicating external display 70 is targeted for a specific user or a maintenance worker based on the signal received from the external display 70, the integration for each pump 2 is performed. Sends the operation time and the total number of operations.

However, the present invention is not limited to this example. Regardless of the display mode of the operation display unit 51 and the signal received from the external display 70, the water supply device 100 transmits the integrated operation time and the integrated operation count to the external display 70. May be. In this case, it may be determined whether or not to display the accumulated operation time and the accumulated operation number on the external display 70 side.

  When a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, or a tablet is adopted as the external display 70, dedicated application software for acting as the external display 70 is installed in these devices. May be. In this case, it is possible to provide a display operation in accordance with the level or purpose of the user by preparing and using a plurality of dedicated application software.

  Here, the operation panel 51 (display unit 49) is not provided in the control unit 40A, and only the external display (high function display) 70 may be provided instead. In this case, all the functions of the operation panel described above can be implemented by the external display device 70. Thereby, since it is not necessary to provide the indicator itself in the water supply apparatus 100, it is possible to further reduce the cost of the water supply apparatus 100 as a whole. Note that the water supply apparatus 100 may be configured such that all the functions of the operation display unit (operation panel) 51 can be implemented by the external display unit 70 even when the display unit 49 is provided. For example, the control unit 40A may switch the display mode of the operation display unit 51 between the first display mode and the second display mode based on a signal from the external display device 70. Further, the reset button 52 and the clear button 53 may not be provided in the setting unit 46 of the operation panel 51, and instead, the reset button (not shown) or the clear button (not shown) may be provided in the external display device 70. When the clear button on the external display 70 is pressed, the display displayed on the external display 70 is deleted.

  In FIG. 7, the communication unit 60 is connected to a remote monitoring device (for example, a personal computer, a smartphone, or a dedicated monitor) provided in a maintenance management company or an administrator room via a public line, a network, a dedicated line, or the like. You may communicate. In this case, for example, information related to the control of the pump 2 in the water supply device 100 is transmitted from the communication unit 60 to the remote monitoring device. The remote monitoring device includes pump operation information for the water supply device 100 (rotation speed of the pump 2, suction side pressure, discharge side pressure, feed water pressure, accumulated operation time, accumulated operation count, etc.), maintenance information (operating time, start count, consumption) Other information such as component usage period, failure history, etc.) and device information (product number, component replacement history, component list, etc.) may also be displayed.

(Second modification)
FIG. 8 is a diagram illustrating a control unit and an external display according to a second modification. In the second modification, the communication unit 60 includes a control unit side antenna unit 67, an integrated circuit 68 connected to the control unit side antenna unit 67, and a communication memory 69. The integrated circuit 68 is electrically connected to the control unit side antenna unit 67 and the communication memory 69. In the second modified example, a communication memory 69 composed of a nonvolatile memory is provided separately from the storage unit 47. The storage unit 47 of the second modification has a volatile memory that temporarily stores data, and a non-volatile storage memory that stores programs necessary for control and various setting values even when the power is turned off. . As the non-volatile memory, for example, ROM, HDD, EEPROM, FeRAM, flash memory, and the like can be used. As an example, in the second modification, the storage unit 47 includes a flash memory, and the communication memory 69 is configured by FeRAM. Note that the control unit 40B illustrated in FIG. 8 does not include the display unit 49, but may include the display unit 49. Moreover, the external indicator 70 of a 2nd modification may be comprised as a part of water supply apparatus 100, and may be comprised as an external device.

The control unit 40B of the second modified example periodically stores the history information of the water supply device 100 (the accumulated operation time, the accumulated operation number, the failure history, etc.) in the nonvolatile memory of the storage unit 47 and the communication memory 69. Also stored in the non-volatile memory. Here, the control unit 40B stores the history information of the water supply apparatus 100 in the non-volatile memory of the communication memory 69 at a frequency higher than the frequency of storing the history information of the water supply apparatus 100 in the non-volatile memory of the storage unit 47. Even when a power failure occurs, the latest history information (such as the accumulated operation time and the accumulated operation count) is stored in the non-volatile memory of the communication memory 69. The flash memory and the EEPROM constituting the nonvolatile memory of the storage unit 47 use a relatively small memory with a rewritable number of about 1 to 1 million times, and the rewritable number of times such as FeRAM constituting the communication memory 69 is one. A configuration using a memory having a relatively large rewritable number of about 100 million times is preferable. In general, flash memory and EEPROM have a lower unit price for each memory capacity than FeRAM. For this reason, only the accumulated operation time, the accumulated operation frequency, etc., whose values change frequently are stored in the non-volatile memory of the communication memory 69, and set values that change only at the time of installation (starting pressure, stopping pressure, PA , PB, etc.) are stored in the nonvolatile memory of the storage unit 47. Thereby, since the memory capacity of the communication memory 69 can be reduced, the cost of the water supply apparatus 100 can be reduced.

  The external display device 70 of the second modification includes a display-side antenna unit 71 that transmits and receives radio waves, a display unit 72, a battery 73, and a data reader 74. In the external display 70, data received by the display-side antenna unit 71 is read by the data reader 74. Then, data read by the data reader 74 (for example, the rotation speed of the pump 2, the suction side pressure, the discharge side pressure, the supply water pressure, the control mode, etc.) is displayed on the display unit 72. The battery 73 supplies power to the display-side antenna unit 71, the data reader 74, and the display unit 72.

  As the external display device 70, for example, a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, or a tablet may be used, or a dedicated terminal device such as a remote monitor may be used. In particular, if a general-purpose terminal device such as a smartphone is used as an external display, the cost of producing a dedicated display can be reduced, and thus the cost of the water supply apparatus 100 can be reduced. Moreover, since the several user can display the state of the water supply apparatus 100 on each general purpose terminal device, it is possible to provide display operation according to a user's level or purpose. For example, it is possible to provide an inexpensive water supply apparatus that can inform a user who does not have specialized knowledge about the water supply apparatus, such as a manager of a condominium or a building, in an easy-to-understand manner regarding information related to the control of the pump 2.

  The external display device 70 is connected to the control unit 40B by near field communication (NFC) technology. More specifically, when the display-side antenna unit 71 generates radio waves while the external display unit 70 is close to the control unit 40B, the control-unit-side antenna unit 67 receives the radio waves, and the control-unit-side antenna unit 67 Converts radio waves into electric power. This electric power is supplied to the integrated circuit 68 and the communication memory 69 to drive the integrated circuit 68 and the communication memory 69. The integrated circuit 68 reads the data stored in the communication memory 69 and transmits a radio wave from the control unit side antenna unit 67 to the display side antenna unit 71 together with the data. The data reader 74 reads data received by the display-side antenna unit 71 and causes the display unit 72 to display the data.

  The external display device 70 may include a clear button 76 for erasing the display and a reset button (not shown) for resetting data. When the user presses the clear button 76, the information display (for example, the rotational speed of the pump 2, the suction side pressure, the discharge side pressure, and the water supply pressure) displayed on the display unit 72 is deleted. Is done. When the reset button is pressed, a reset signal is transmitted to the control unit 40B, and the control unit 40B that has received the reset signal resets data such as maintenance information. The clear button 76 of the present embodiment is a virtual button that appears on the screen of the display unit 72, but the clear button 76 may be a mechanical button provided outside the display unit 72. The control unit 40B of the second modified example does not include the clear button, but the control unit 40B may be provided with a clear button and a reset button.

  Note that operation for clearing the display and resetting the data may be provided. Specifically, a clear button 76 is provided on the external display 70 used mainly by the user, and a reset button is provided on the control unit 40B used mainly by maintenance workers. Thus, by providing the reset button only in the control unit 40B, it is possible to prevent erroneous operation of the reset button by the user who operates the external display device 70. By providing the external display device 70 instead of a complicated method of canceling the use restriction such as a password, it is possible to prevent a reset due to a user's erroneous operation.

  In the second modification, data stored in the communication memory 69 of the communication unit 60 (for example, the rotation speed of the pump 2, the suction side pressure, the discharge side pressure, the supply water pressure, etc.) is transmitted from the control unit 40B by wireless communication. It is sent to the external display 70. According to the second modification, even when the water supply apparatus 100 is not turned on, the control unit side antenna unit 67 generates electric power from the radio wave emitted from the external display unit 70, and the integrated circuit 68 and the communication memory 69 are installed. Can be driven. Therefore, even when power is not supplied to the control unit 40B during maintenance of the water supply apparatus 100, the external display device 70 can acquire and display data from the storage unit 47 of the control unit 40B.

  NFC is a technology for mutual communication at a short distance of several centimeters. Therefore, when displaying various kinds of information on the external display 70, the user and the maintenance worker bring the external display 70 close to the control unit 40B to a distance where mutual communication is possible. This means that the user and the maintenance worker are near the water supply device 100 when operating the external display 70. For this reason, it leads to preventing the unexpected operation | movement of the water supply apparatus 100 resulting from the erroneous operation in the replacement | exchange operation | work of consumables, for example. In addition, at a site where a plurality of water supply devices 100 are installed, since mutual communication is possible at a short distance of the water supply device 100 that is desired to be displayed, an erroneous display or erroneous setting that displays the state of another unintended water supply device. Can be prevented.

  In the above example, NFC is used as an example of a wireless communication method between the control unit 40B and the external display 70, but wireless communication of an arbitrary method such as Bluetooth (registered trademark) or Wi-Fi is also possible. Is available. However, NFC is advantageous in that communication can be completed simply by bringing the control unit 40B and the external display 70 close to each other. In addition, the control unit 40B and the external display device 70 may perform wired communication. For example, the control unit 40B is provided with an external connection terminal such as a USB (Universal Serial Bus) instead of the control unit side antenna unit 67, and communication is possible by connecting an external display 70 thereto. It may be.

  Although the embodiments of the present invention have been described above, the above-described embodiments of the present invention are for facilitating the understanding of the present invention and are not intended to limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes the equivalents thereof. In addition, any combination of the embodiment and the modified example is possible within a range where at least a part of the above-described problems can be solved or a range where at least a part of the effect can be achieved, and is described in the claims and the specification. Any combination or omission of each component is possible.

DESCRIPTION OF SYMBOLS 2 ... Pump 3 ... Motor 4 ... Water pipe 5 ... Introducing pipe 7 ... Water supply pipe 10 ... Water tap 20 ... Inverter 21 ... Pressure sensor 22 ... Check valve 24 ... Flow switch 25 ... Backflow prevention device 26 ... Pressure sensor 28 ... Pressure Tank 40, 40A, 40B ... control unit 46 ... setting unit 47 ... storage unit 48 ... calculation unit 49 ... display unit 50 ... I / O unit 51 ... operation display unit (operation panel)
52 ... Reset button 53 ... Clear button 55 ... Setting button 60 ... Communication unit 67 ... Control unit side antenna unit 68 ... Integrated circuit 69 ... Communication memory 70 ... External display unit 71 ... Display unit side antenna unit 72 ... Display unit 73 ... Battery 74 ... Data reader 76 ... Clear button 100 ... Water supply device 500 ... 7 segment LED
502 ... Abnormal indication lamp 503 ... Water level lamp 511 ... Pump selection button 512 ... Up / down button 513 ... Test / automatic switch button 514 ... Function / monitor button 515 ... Buzzer stop / alarm release button 516 ... Run button 517 ... Stop button

Claims (10)

A water supply device for supplying water to a building,
A pump,
An operation display unit configured to accept setting input for controlling the water supply device and to display information regarding the operation of the water supply device;
A control unit for controlling the pump;
With
The operation display unit displays, as a display mode for displaying the information, a first display mode for displaying information that does not include the accumulated operation time and the accumulated operation number of the pump, the accumulated operation time and the accumulated operation number of the pump. And a second display mode for displaying information including at least one of
Water supply device. The operation display unit sets the display mode to the second display mode when a predetermined operation or a predetermined authentication is performed.
The water supply apparatus according to claim 1. The operation display unit sets the display mode to the first display mode when a predetermined period has elapsed in the second display mode.
The water supply apparatus of Claim 1 or 2. The second display mode includes a third display mode for displaying information including one of the accumulated operation time of the pump and the number of accumulated operations as the information, and the accumulated operation time of the pump as the information. A fourth display mode for displaying the information including both the cumulative number of operations,
The water supply apparatus as described in any one of Claim 1 to 3.   The water supply device according to any one of claims 1 to 4, wherein the control unit or the operation display unit further includes a communication unit configured to transmit the information to an external display. When the display mode of the operation display unit is the first display mode, the communication unit transmits information that does not include the accumulated operation time of the pump and the accumulated operation number as the information, and the operation display unit When the display mode is the second display mode, information including at least one of the accumulated operation time and the accumulated operation number of the pump is transmitted as the information.
The water supply apparatus of Claim 5. The communication unit, based on a signal from the external display, transmits information that does not include the accumulated operation time and the accumulated operation number of the pump as the information when the signal does not satisfy a predetermined condition, When the signal satisfies the predetermined condition, information including at least one of the accumulated operation time and the accumulated operation number of the pump is transmitted as the information.
The water supply apparatus of Claim 5.   The water supply device according to any one of claims 5 to 7, wherein the communication unit includes a control unit side antenna unit that receives radio waves from the external display and converts the radio waves into electric power.   The water supply device according to any one of claims 5 to 8, wherein the communication unit transmits the information to the external display device by near field communication (NFC). A water supply device for supplying water to a building,
A pump,
A control unit for controlling the pump, the control unit comprising a communication unit configured to transmit information related to the operation of the water supply device to an external display;
With
The communication unit, based on a signal from the external display, transmits information that does not include the accumulated operation time and the accumulated operation number of the pump as the information when the signal does not satisfy a predetermined condition, When the information satisfies the predetermined condition, as the information, information including at least one of the accumulated operation time and the accumulated operation number for each pump is transmitted.
Water supply device.

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