JP2017198162A - Pump unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide water supply equipment and a control method capable of preventing malfunction of the water supply equipment due to a change of set information made by an external indicator and of preventing an unintended change of the set information.SOLUTION: In a nonvolatile memory of water supply equipment, equipment information including at least one of the number of pumps, a water supply method and equipment type identification information and set information set by a user and used for controlling a pump are stored. A control section sets a changeable range of the set information on the basis of the equipment information stored in the nonvolatile memory. When receiving an instruction to change the set information from an external indicator, if the change of the set information in accordance with the change instruction is within the changeable range, the control section changes the set information stored in the nonvolatile memory. On the other hand, if the change of the set information in accordance with the change instruction is outside the changeable range, the control section does not change the set information stored in the nonvolatile memory.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a pump device.

  A water supply device is widely used to supply tap water to a water supply target such as a building. 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 pumps the water in the water receiving tank to the water supply target, 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. Control of the pump by such a control part is performed based on the setting value (setting information) memorize | stored beforehand in the memory | storage part according to the installation condition of the water supply apparatus, and the water supply object.

  The setting information of the water supply apparatus may be required to be changed according to the usage status of the building and the environment. Generally, the setting information is changed by an operation panel provided in the water supply device. However, since the water supply apparatus is usually automatically controlled, there are few opportunities to operate the operation panel. Moreover, the water supply apparatus may be installed in an environment with a lot of electrical noise such as a machine room or a pump room, and a 7-segment LED and an indicator lamp that are resistant to electrical noise are used. For this reason, the operation panel has a relatively simplified configuration, and the operation for changing the setting information tends to be complicated because the frequency is small. In particular, when a plurality of setting information is changed, operation of the operation panel becomes complicated.

  And in recent years, the water supply apparatus which can be operated with a portable terminal is proposed. By operating the water supply device on the portable terminal, the operation panel of the water supply device can be simplified, and even a user unfamiliar with the water supply device can easily operate the water supply device using the operation unit of the portable terminal. Can do.

JP 2005-171788 A

  As described above, the water supply device may be installed in an environment with a lot of electrical noise such as a machine room or a pump room. When changing the setting information of the water supply device using a mobile terminal, the setting information is The value may be changed to an unintended value. Moreover, when a water supply apparatus has a communication means, there exists a possibility that a water supply apparatus may be illegally accessed from a third party. In particular, if the setting information is changed to information that prevents the water supply apparatus from operating normally, or if the setting information is significantly changed from the current setting information, the water supply apparatus may malfunction. Water supply to the water supply target is a lifeline, and malfunctions of the water supply device may cause water outage in the worst case, so it should be avoided as much as possible.

  The present invention has been made in view of the above-described circumstances, and provides a water supply device and a control method capable of changing setting information by an external display and preventing malfunction of the water supply device due to an unintended change of the setting information. Objective.

The water supply apparatus of the present invention is a water supply apparatus for supplying water to a water supply target, and includes at least one pump that transfers water and a control unit that controls the pump. The control unit includes a rewritable nonvolatile memory and a communication unit configured to communicate with an external display. The nonvolatile memory has device information including at least one of the number of pumps, the water supply method, and the model identification information indicating the configuration of the water supply device, and is used by the user to control the pump. Setting information is stored. And a control part sets the changeable range of setting information based on the apparatus information memorize | stored in the non-volatile memory. The control unit changes the setting information stored in the non-volatile memory when the change of the setting information by the change command is within the changeable range when receiving the change instruction of the setting information from the external display. On the other hand, the control unit does not change the setting information stored in the nonvolatile memory when the change of the setting information by the change command is outside the changeable range.
With this configuration, the water supply device of the present invention can set a changeable range according to the device information. Then, when a setting information change command is received from the external display, it is determined whether or not to change the setting information stored in the nonvolatile memory based on the changeable range. For this reason, setting information is changed in the changeable range according to apparatus information, setting information can be changed with an external indicator, and malfunction of a water supply apparatus by unintended change of setting information can be prevented.

Further, the control unit may change the setting information stored in the nonvolatile memory when the amount of water discharged from the pump is smaller than a predetermined amount.
In this way, it is possible to prevent the setting information from being changed during operation of the pump and suddenly changing the operation state of the pump.

Further, the setting information may include change restriction information indicating a restriction on changing the setting information. The control unit may not change the setting information stored in the nonvolatile memory even when the change command is received when the change restriction information indicates prohibition of changing the setting information.
In this way, by setting the change restriction information, the change of the setting information by the external display can be permitted or prohibited, and the setting information can be prevented from being changed unintentionally.

Further, the control unit may not change the setting information stored in the nonvolatile memory when the change command does not follow a predetermined encoding rule.
If it carries out like this, the reliability of communication with an external indicator and a water supply apparatus can be improved.

In addition, when changing the setting information stored in the nonvolatile memory by the change command, the control unit may store the time when the setting information is changed or the time when the change command is received in the nonvolatile memory.
In this way, since the time is stored when the setting information is changed, it is possible to check the situation when the setting information was changed last time.

Further, the control unit may notify when the change command is received and the setting information stored in the nonvolatile memory is not changed.
In this way, it can be recognized that the setting information has not been changed even though the user operating the external display device has transmitted the change command.

  The control unit may include a main board for controlling the pump and a communication board provided with a communication unit and a nonvolatile memory. The main board may be provided with a memory separately from the nonvolatile memory. And a control part may memorize | store the apparatus information memorize | stored in the non-volatile memory at the time of starting of a water supply apparatus in a memory.

  Moreover, you may further provide the display part which displays the information regarding control of a pump.

  The communication unit may transmit information related to pump control to an external display.

  The communication unit may be a control unit side antenna unit that receives radio waves from an external display and converts the radio waves into electric power.

  The communication unit may communicate with the external display device by near field communication (NFC).

The water supply device control method of the present invention is a water supply device control method for supplying water to a water supply object, and is at least one of the number of pumps of the water supply device, the water supply method, and the model identification information of the water supply device. Storing the apparatus information including the two and the setting information set by the user and used to control the pump in a nonvolatile memory included in the water supply apparatus. The control method includes a step of setting a changeable range of the setting information based on the device information stored in the nonvolatile memory. Then, the control method changes the setting information stored in the non-volatile memory when the change of the setting information by the change command is within the changeable range when the setting information change command is received from the external display. The step of not changing the setting information stored in the non-volatile memory when the change of the setting information by the method is outside the changeable range is included.
With this configuration, the water supply device control method of the present invention can achieve the same effects as the water supply device of the present invention described above.

It is a top view which shows an example of the water supply apparatus which concerns on embodiment of this invention. It is a front view which shows an example of the water supply apparatus which concerns on embodiment of this invention. It is a left view which shows an example of the water supply apparatus which concerns on embodiment of this invention. It is a schematic block block diagram which shows an example of a control part. It is a flowchart which shows an example of the setting information change process performed by a control part. It is a figure which shows the control part and external display of a modification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 3 are schematic views showing an example of a water supply apparatus according to an embodiment of the present invention. FIG. 1 is a plan view, FIG. 2 is a front view, and FIG. 3 is a left side view. As shown in the drawing, in the water supply apparatus 10, two pumps 30A and 30B and a pressure tank 50 disposed between these pumps 30A and 30B are placed on a base 20. The water supply apparatus 10 includes a discharge pipe 40 connected to the discharge side of the pumps 30 </ b> A and 30 </ b> B and a control panel 60 installed on the upper part of the pressure tank 50. Each component will be described below.

  First, as a water supply system to the building of the water supply apparatus 10, the water main tank water is temporarily stored in a water receiving tank, and the water receiving tank water is pumped to the water supply target by a pump. There is a direct water supply system that supplies water to the water supply target by increasing the pressure with a pump using the main pipe pressure. In addition, as a water supply method for the water supply target, a direct-feed type in which the pressure increased by the pump is directly pumped, or the water increased in pressure by the pump is temporarily stored in a roof tank, and water is supplied under natural flow. There is an elevated water tank system.

  The base 20 has a substantially rectangular flat plate shape, and both sides in the longitudinal direction are bent downward and then bent outward to constitute L-shaped fixed sides 23 and 23.

The pumps 30A and 30B include pump units 31A and 31B and motor units 33A and 33B for driving them. Suction portions 35A and 35B for connecting a supply pipe (not shown) branched from a water receiving tank or a water main pipe (not shown) are provided on the front end face of the pump portions 31A and 31B, and upper surfaces of the pump portions 31A and 31B. Are provided with discharge portions 37A and 37B. In the case of the direct water supply method, the suction portions 35A and 35B are connected to a supply pipe branched from the water main through a backflow prevention device (not shown), and the pressure of the water main is detected in the supply pipe. A pressure sensor (not shown) is provided. Hereinafter, the pressure value detected by the pressure sensor that measures the pressure of the water main provided in the supply pipe is referred to as “suction side pressure”.

  The discharge pipe 40 is a substantially T-shaped pipe, and both ends thereof are connected to the discharge portions 37A and 37B of both pumps 30A and 30B via flow switches 49A and 49B and check valves (check valves) 47A and 47B. Has been. A discharge collecting pipe 43 is provided at the center of the discharge pipe 40. As a result, the discharge sides of both pumps 30A and 30B are connected in parallel, and the discharge fluids of both pumps 30A and 30B merge at the discharge collecting pipe 43. Further, when the pumps 30A and 30B are stopped by the check valves 47A and 47B, the water in the discharge pipe 40 does not flow backward to the pumps 30A and 30B. A connecting pipe 45 that connects the discharge pipe 40 to the pressure tank 50 is attached to the lower part of the center of the discharge pipe 40, and a pressure sensor 48 that detects the pressure in the pipe is attached to the discharge pipe 40. Due to the effects of the pressure tank 50 and the check valves 47A and 47B, the pressure in the discharge pipe 40 after the pumps 30A and 30B are stopped is maintained at a constant pressure unless water is used. Hereinafter, the pressure value detected by the pressure sensor 48 is referred to as “discharge side pressure”.

  The control panel 60 is configured by incorporating a control unit 65 composed of various electric circuits for controlling the operation of the pump in a case 61. The control unit 65 includes a communication unit 73 that communicates with the external display device 80 in a wired or wireless manner. As the external display device 80, for example, a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, or a tablet, or a dedicated terminal device such as a remote monitor is employed.

  FIG. 4 is a schematic block diagram illustrating an example of the control unit. As illustrated, the control unit 65 includes a control memory 66, a communication memory 67, a nonvolatile memory 68, a calculation unit 69, an I / O unit (input unit and output unit) 70, and a setting unit 71. And a display unit 72 and a communication unit 73. The setting unit 71 and the display unit 72 are provided in the operation panel 79 of the water supply apparatus 10. The communication memory 67 and the nonvolatile memory 68 are included in the communication unit 73. However, it is not limited to such an example, for example, the communication part 73, the communication memory 67, and the non-volatile memory 68 may be comprised separately.

  Further, as shown in FIG. 3, the control unit 65 may be a separate substrate from the communication unit 73. In that case, the control unit 65 and the communication unit 73 are connected by serial communication, a signal line, or the like. The control memory 65 and the non-volatile memory 68 may be arranged in the control unit 65, and the communication memory 67 may be arranged in the communication unit 73. Alternatively, the control memory 66 may be arranged in the control unit 65 and the communication unit. The communication memory 67 and the non-volatile memory 68 may be arranged at 73. When the control unit 65 and the communication unit 73 are separate boards, they are installed in a place away from the water supply apparatus 10 (for example, a manager's room or a remote monitoring room), and the control unit 65 and serial communication or signal lines are used. You may comprise the communication part 73 in the connected remote monitoring device. Alternatively, the control memory 66 and the nonvolatile memory 68 may be arranged in the control unit 65, and the communication memory 67 and the nonvolatile memory (not shown) may be arranged in the communication unit 73.

The setting unit 71 is used to set various setting values (setting information) necessary for water supply by an external operation. Various setting values set in the setting unit 71 are stored in the control memory 66 and further stored in the nonvolatile memory 68. As an example, the user can input stop pressure, starting pressure, and other information necessary for control as setting information via the setting unit 71. In the present embodiment, the setting information includes change restriction information for restricting change of the setting information by the external display device 80. When changing the setting information is prohibited by the change restriction information, the setting information cannot be changed from the external display device 80. In this case, change of the setting information by the external display device 80 is permitted by changing the change restriction information through the setting unit 71. In the present embodiment, the setting unit 71 includes a reset button 74 and a clear button 75. By pressing the clear button 75, the control unit 65 clears only a display such as a warning on the display unit 72. Further, when the reset button 74 is pressed, the control unit 65 resets data such as abnormality information and maintenance information (for example, operation time, number of starts, usage period of consumable parts, failure history).

  The display unit 72 functions as a user interface, and various data such as set values stored in the control memory 66 or the communication memory 67, the current operation status (operation information) of the pumps 30A and 30B, for example, the pump 30A. , 30B, operation frequency, current, suction side pressure, discharge side pressure, trip of the inverter that drives the motor units 33A, 33B, suction side pressure drop alarm, water tank alert, and the like are displayed.

  As the nonvolatile memory 68, memories such as ROM, HDD, EEPROM, FeRAM, and flash memory are used. The nonvolatile memory 68 stores a control program for controlling the water supply device 10, device information of the water supply device 10, a failure history, an operation history, setting information input through the setting unit 71, and the like. Here, the device information of the water supply device 10 includes at least one of the number of pumps, the diameter of the pump, the output of the pump, the water supply method, the model name of the water supply device, and the like. Or may be stored by an operator when the water supply apparatus 10 is installed. Here, the output of the pump may be substituted by the capacity of the motor units 33A and 33B, the capacity of an inverter for driving the motor units 33A and 33B, or the like. Further, when a failure occurs, information such as a failure history and a periodic operation history of the water supply apparatus 10 is also stored in the nonvolatile memory 68.

  Since the device information of the water supply apparatus 10 is determined by the configuration of the water supply apparatus, there is a possibility that normal water supply cannot be performed if an incorrect setting is made. Therefore, in the present embodiment, it is assumed that the device information stored in the nonvolatile memory 68 cannot be changed by a command from the external display device 80 and an operation of the setting unit 71. Alternatively, authority is provided by a password or the like, and only a user who has authority to change the device information can change it.

  As the control memory 66 and the communication memory 67, a volatile memory such as a RAM is used. Further, the memory may not be a volatile memory as long as it does not interfere with the control program of the water supply apparatus 10 as long as the memory has a short access time for reading and writing data. Information for performing operation control of the water supply apparatus 10 is stored in the control memory 66, and data for transmission / reception to / from the external display device 80 is stored in the communication memory 67. Note that the control memory 66 and the communication memory 67 may be configured by separate circuit boards or circuit elements, or may be a virtual distinction in one circuit board or circuit element. The control unit 65 reads device information and setting information stored in the nonvolatile memory 68 when the water supply device 10 is powered on, and stores necessary information in the control memory 66. In the control memory 66, various data such as calculation result data (operation time, integrated value, etc.) in the calculation unit 69, pressure values (suction side pressure, discharge side pressure), setting data input through the setting unit 71, In addition, data input through the I / O unit 70 or output through the I / O unit 70 is stored.

As the I / O unit 70, a port or the like is used. The I / O unit 70 receives the input signal of the pressure sensor 48, the signals of the flow switches 49A and 49B, and sends them to the calculation unit 69. A CPU is used as the calculation unit 69. The calculation unit 69 is configured to set various types of data for operating the pumps 30A and 30B based on a program and various data stored in the control memory 66 and a signal input from the I / O unit 70, time measurement, And the calculation is performed.
An output from the calculation unit 69 is input to the I / O unit 70.

  The I / O unit 70 and the inverter that drives the pumps 30A and 30B are connected to each other by communication means such as RS422, 232C, and 485. Control signals such as various setting values, frequency command values, start / stop signals (operation / stop signals) are sent from the I / O unit 70 to the pumps 30A and 30B to the inverter, and the I / O unit 70 is supplied from the pumps 30A and 30B. The operation status (operation information) such as the actual frequency value and current value is sequentially sent from the inverter.

  An analog signal and / or a digital signal can be used as a control signal transmitted and received between the I / O unit 70 and the inverter that drives the pumps 30A and 30B. 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. Further, when the variable speed control of 30A and 30B is not performed, the inverter may not be provided.

  The communication unit 73 is configured to be able to communicate with the external display device 80 by wired communication or wireless communication. As the wireless communication, for example, a near field communication (NFC) technology can be used. In addition, wireless communication of an arbitrary system such as Bluetooth (registered trademark) and Wi-Fi can be used. However, NFC is advantageous in that communication can be completed simply by bringing the control unit 65 and the external display device 80 close to each other. As the wired communication, for example, the control unit 65 may be provided with an external connection terminal such as a USB (Universal Serial Bus), and the external display device 80 may be connected to the external connection terminal. Serial communication such as 232C, 485 may be used.

  In the present embodiment, a simple indicator such as a 7-segment LED and an indicator lamp can be used as the display unit 72. Further, as the external display 80, a high-function display on a liquid crystal screen using a touch input method or a push button method can be adopted. In this case, simple information can be displayed on the display unit 72, and a large amount of information can be displayed on the external display device 80. With this configuration, information related to the operation status of the pumps 30A and 30B by the control unit 65 (for example, the target pressure SV, the current pressure PV, the operation / stop of the pumps 30A and 30B, and the pumps 30A and 30B) By displaying the frequency of 30B on the same screen, a user who is not familiar with the water supply apparatus can recognize the state of the water supply apparatus 10 or change the setting without misunderstanding. Moreover, the water supply apparatus 10 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 72, a display unit configured by a 7-segment LED, a display lamp, a mechanical press button, or the like that is more resistant to electrical noise than a liquid crystal display or a touch panel may be used. Thereby, even when an abnormality occurs in the liquid crystal display or touch panel operation of the external display device 80 due to electrical noise generated from the external environment, the minimum display and operation necessary for the operation of the water supply apparatus 10 by the display unit 72. It can be performed. Therefore, the water supply apparatus 10 can be installed even in an environment with a lot of electrical noise.

  Furthermore, 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 device 80, dedicated application software for acting as the external display device 80 is applied to these devices. It may be installed. In this case, a plurality of dedicated application software may be prepared according to the user level or purpose.

In addition, the operation panel 79 (display unit 72) is not provided in the control unit 65, and only the external display (high function display) 80 may be provided. In this case, all the functions of the operation panel 79 described above can be performed by the external display device 80. Since it is not necessary to provide the indicator itself in the water supply apparatus 10, it is possible to further reduce the cost of the water supply apparatus 10 as a whole. Further, the reset button 74 and the clear button 75 may not be provided in the setting unit 71 of the operation panel 79, and instead, a reset button (not shown) or a clear button (not shown) may be provided in the external display device 80. When the clear button on the external display unit 80 is pressed, the display displayed on the external display unit 80 is deleted.

  Next, control of the water supply apparatus 10 by the control part 65 is demonstrated. When the discharge-side pressure is reduced to a predetermined starting pressure while the pumps 30A and 30B are stopped, the control unit 65 starts at least one of the pumps 30A and 30B. Specifically, the control unit 65 issues a command to the motor units 33A and 33B (inverter when an inverter is provided) to start driving the pumps 30A and 30B. During the operation of the pumps 30A and 30B, 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 the estimated terminal pressure constant control, the target pressure (SV) is set using the rotation speed of the pumps 30A and 30B and the target pressure control curve, and in the case of the constant target pressure control, the set pressure is set to the target pressure ( SV). Moreover, let discharge side pressure be present pressure (PV). Then, PID calculation is performed based on the deviation between SV and PV, and command rotational speeds of pumps 30A and 30B are set. In addition, when performing the estimated terminal pressure constant control with directly connected water, the target pressure control curve may be corrected based on the suction side pressure. Specifically, the target pressure control curve is added only by the suction side pressure, and the target pressure (SV) is calculated. In addition, when there are a plurality of pumps as in the present embodiment, the control unit 65 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 pumps 30A and 30B, the flow switches 49A and 49B detect an excessive amount of water and send the detection signal to the control unit 65. The control unit 65 receives this detection signal, issues a command to the pumps 30A and 30B, increases the rotation speed of the pumps 30A and 30B until the discharge side pressure reaches a predetermined operation stop pressure, and accumulates the pressure in the pressure tank 50 before pumping 30A and 30B are stopped (small water amount stop). When water is used again in the building after the pumps 30A and 30B have stopped for a small amount of water, the discharge side pressure drops below the starting pressure and the pumps 30A and 30B are started. In addition, when there are a plurality of pumps as in this embodiment, it is preferable to rotate the pumps 30A and 30B to be started to prevent water from staying in the pumps 30A and 30B. Further, as a method for detecting the small amount of water, other means such as a low load or a cutoff pressure due to the current values of the motor units 33A and 33B may be used without using the flow switches 49A and 49B.

  FIG. 5 is a flowchart illustrating an example of setting information change processing executed by the control unit. The control unit 65 of the present embodiment can receive a setting information change command from the external display device 80, and determines whether or not to change the setting information stored in the nonvolatile memory 68 by the setting information change process. To do. The setting information change process of this embodiment is always performed when the power supply of the water supply apparatus 10 is turned on. However, the present invention is not limited to such an example, and the setting information change process may be executed only when the water supply apparatus 10 receives a setting information change command from the external display device 80, for example.

  When starting the setting information change process, the control unit 65 first reads the device information stored in the nonvolatile memory 68 and stores it in the control memory 66 (step S100). In this embodiment, the process of step S100 is performed when the power supply of the water supply apparatus 10 is turned on, and then the control unit 65 refers to the apparatus information stored in the control memory 66. In addition, when the power supply of the water supply apparatus 10 is turned on, the control part 65 of this embodiment is also an apparatus about the setting information memorize | stored in the non-volatile memory 68, in order to perform control of above-described pump 30A, 30B. It is read together with the information and stored in the control memory 66.

Subsequently, the control unit 65 sets whether or not the setting information can be changed and / or the setting information can be changed based on the device information stored in the control memory 66 (step S110). The changeable range indicates a range in which setting information can be changed. For example, when the setting information is a numerical value (setting value), the settable range may be at least one of an upper limit value and a lower limit value allowed as the setting value. The settable range may be an upper limit value of the change amount that is allowed to be changed from the currently stored set value. The settable range may be a list that is recognized as setting information when the setting information is a character string or a symbol. As a specific example, the control unit 65 refers to a map, a relational expression, a correction coefficient, or the like that predetermines the relationship between the device information and the changeable range, and changes the setting information using these and the device information. Set the possible range.

  In the present embodiment, the control unit 65 uses the information on the number of pumps in the device information to provide an upper limit value for the number of pumps in parallel operation. The number of pumps operated in parallel is the number of pumps that operate at the maximum flow rate. This is based on the fact that the number of pumps operated at the maximum water amount may be different from the number of pumps of the water supply apparatus 10. When the water supply device 10 has a spare pump at the time of a pump failure, facilities such as a power source capacity are designed with a capacity excluding the spare pump. Therefore, even if the number of pumps in parallel operation is smaller than the number of pumps, the number of pumps in parallel operation is not larger than the number of pumps, so the upper limit value of the number of pumps in parallel operation is equal to the number of pumps. In addition, when the number of pumps in parallel operation is one, the pumps 30A and 30B only perform single alternate operation and do not perform additional separation of the operation pumps. Therefore, the setting value related to the additional solution sequence may not be changed.

  Further, the I / O unit 70 may include a plurality of DO terminals (not shown) that contact-output the state (operation, failure, etc.) for each pump to the outside. The output signal of the DO terminal may change which state of which pump is output by changing the setting from the external display device 80. In this case, the control unit 65 sets a limit on the set value so that the setting of outputting the state of the pump number more than the number of pumps as the output of DO using the number of pumps in the device information cannot be performed. Thereby, it is possible to prevent an unintended signal from being output from the DO.

  The control unit 65 may limit the upper and lower limit values of the set pressure by using the value of the pump diameter and the value of the pump output in the device information, or the model identification information indicating the configuration of the water supply device. The upper and lower limits of the set pressure are determined by the pump-specific selection curve (QH curve). Therefore, the upper and lower limit values of the selection curve for each pump obtained from the pump diameter and output or the model identification information indicating the configuration of the water supply device can be stored in the nonvolatile memory in advance.

  The control unit 65 may limit the upper and lower limit values of the stall current value of the inverter by using the output value of the pump in the device information. In the water supply apparatus 10, an inverter having a larger current capacity than the outputs of the motors 33A and 33B that are driving sources of the pumps 31A and 31B may be used. At this time, if a large current that exceeds the rated current flows through the motors 33A and 33B, the coils of the motors 33A and 33B may burn out due to overcurrent, and the pumps 31A and 31B may not be driven and water supply may not be possible. . Therefore, it is necessary to limit the current by setting the stall current value of the inverter. Since the pump output is proportional to the rated currents of the motors 33A and 33B, the upper and lower limit values of the stall current value of the inverter can be determined for each output value of the pump.

  The control part 65 permits the setting change relevant to a water receiving tank, when the water supply system is a water receiving tank system among apparatus information. The setting of the receiving tank is one tank type, two tank type or none (does not detect the water level of the receiving tank), and how many electrode rods to measure the water level of the receiving tank are full, reduced, drought The setting of which electrode is to be detected is included. The input value is limited so that these settings can be performed normally. In addition, a selection may be made to detect or not detect an alarm of any of the water receiving tank full, low, or drought.

  When the direct water supply method is selected as the water supply method in the device information, the control unit 65 permits setting of the detection value and the return value of the suction side pressure drop. The upper limit value of the detection value of the suction side pressure drop is a return value, and the lower limit value of the return value of the suction side pressure drop is a detection value. As an example, the detected value of the suction side pressure drop is 7 m or less, and the return value is 10 m or more. The suction side pressure drop means a drop in the water main pressure, and it is necessary to stop the pumps 30A and 30B until the water main pressure is sufficiently restored. Therefore, it is necessary to provide a differential for the detection value and the return value.

  The control part 65 permits the setting relevant to the high water tank when the water supply method is selected as the water tank method from the device information. Installed in the pipe between the water supply device 10 and the elevated water tank, which electrode is used to measure the water level of the elevated water tank, which electrode is used to detect whether the water level is full or low, and which electrode detects the pump start / stop. The setting of which electrode detects the opening / closing of the solenoid valve or the motor operated valve is included. The input value is limited so that these settings can be performed normally. Alternatively, a selection may be made to detect or not detect an alarm of whether the elevated water tank is full or low.

  By setting the changeable range of the setting information based on the device information in this way, it is possible to set a changeable range suitable for each water supply device without storing the changeable range individually for each of the plurality of water supply devices. Can do. Moreover, by this, the changeable range of setting information can be set using the same setting information change process with respect to the water supply apparatus from which apparatus information differs, and a highly versatile control process can be implement | achieved.

  Further, the settable range may be at least one of an upper limit value and a lower limit value allowed as a set value with reference to values of other setting items. As an example, the upper limit value of the starting pressure is the set value of the stop pressure, and the lower limit value of the stop pressure is the set value of the stop pressure. If the starting pressure is higher than the stop pressure, the pumps 30A and 30B will repeatedly start and stop. If it does so, the frequency | count of start / stop of pump 31A, 31B will increase, a bearing and a shaft will be damaged, and pump 31A, 31B will be unable to pump water in the worst case, and the water supply apparatus 10 will cut off water. Therefore, by providing input restrictions so that the set values of the start pressure and the stop pressure are set correctly, there is an effect of suppressing the start frequency of the pumps 31A and 31B and extending the life.

  Next, the control unit 65 stands by until a setting information change command is received from the external display device 80 (step S120), and when the change command is received (S120; Yes), an error is detected in the received change command. (Step S130). This error detection is a process of determining whether or not the change command conforms to a predetermined encoding rule, and includes determination using a parity bit or a checksum, for example. When an error is detected in the received change command (S130; Yes), the control unit 65 determines that the change command is not an appropriate command or that the command has not been received properly due to a communication failure or the like. At this time, the control unit 65 executes a process of notifying the user (step S200) and returns to the process of step S120. The notification by the control unit 65 may be displayed on the display unit 72, an error sound or the like may be generated from a buzzer or the like (not shown), or a contact may be output to the outside by the I / O unit 70. Good. Further, the control unit 65 may notify that the setting information is not changed because an error is detected in the change command. By such notification, the user can recognize that the setting information has not been changed despite operating the external display device 80 and transmitting a change command to the water supply apparatus 10. Further, the notification by the control unit 65 may be performed by using the external display device 80 instead of or in addition to the notification by the water supply device 10 itself such as the display unit 72. That is, the control unit 65 may communicate information to be notified to the external display device 80 through the communication unit 73, and the external display device 80 that has received the information may notify the user by screen display or the like.

  When no error is detected in the change command (S130; No), the control unit 65 determines that an appropriate change command has been received, and stores the setting information in the communication memory 67 in accordance with the received change command (step S140). As described above, the communication memory 67 is a memory that stores data by communication, and the setting information used for control is not changed in the process of step S140.

  Subsequently, the control unit 65 refers to the change restriction information in the setting information stored in the control memory 66 and determines whether or not rewriting of the setting information by the external display 80 is permitted (step S150). . When rewriting of setting information by the external display 80 is prohibited (S150; No), the control unit 65 executes a process of notifying the user (S200) and returns to the process of step S120. At this time, the control unit 65 may notify that rewriting of setting information by the external display device 80 is prohibited by the change restriction information. Thereby, it is possible to prompt the change restriction information to be changed by the operation of the setting unit 71. In addition, by using such change restriction information, it is possible to prevent the setting information from being illegally changed by a third party or the setting information from being changed by an erroneous operation. However, such change restriction information may not be included in the setting information. Further, a button for permitting / prohibiting rewriting of the setting information may be provided on the operation panel 79 instead of the change restriction information. Further, the change restriction information may be provided individually for each set value.

  When rewriting of the setting information by the external display 80 is permitted (S150; Yes), the control unit 65 determines whether or not the change of the setting information by the change command is within the changeable range set in the process of step S110. Is determined (step S160). In the process of step S160, for example, when the upper limit value (lower limit value) is set as the changeable range, the control unit 65 changes the setting information when the new setting information is less than or equal to the upper limit value (more than the lower limit value). It is determined that it is within the possible range. On the other hand, the control unit 65 determines that the change of the setting information is out of the changeable range when the new setting information is larger than the upper limit value (smaller than the lower limit value). Further, when the upper limit value of the change amount is set as the changeable range, the control unit 65 can change the setting information when the difference between the current setting information and the change value is less than or equal to the upper limit value of the change amount. Determined to be within range. On the other hand, the control unit 65 determines that the change of the setting information is out of the changeable range when the difference between the current setting information and the change value is larger than the change amount. Further, when the list is set as the changeable range, the control unit 65 determines that the change of the setting information is within the changeable range when new setting information is included in the list. On the other hand, when the new setting information is not included in the list, the control unit 65 determines that the change of the setting information is outside the changeable range.

  When the change of the setting information is out of the changeable range (S160; No), the control unit 65 determines that the change of the setting information cannot be accepted, executes a process for notifying the user (S200), and step The process returns to S120. At this time, the control unit 65 may notify that the change of the setting information is outside the changeable range. Thus, by not changing the setting information when the change of the setting information is outside the changeable range, it is possible to prevent the setting information from being updated to unintended information and causing the apparatus to malfunction. Moreover, in the present embodiment, since the changeable range is set based on the device information, the setting information of the water supply device 10 can be changed in a range suitable for the device information.

When the change of the setting information is within the changeable range (S160; Yes), the control unit 65 determines that the change of the setting information can be accepted, and determines whether both the pumps 30A and 30B are stopped. (Step S170). This is based on the fact that if the setting information is changed during operation of the pumps 30A and 30B, the command values of the pumps 30A and 30B controlled based on the setting information may change greatly. For this reason, in this embodiment, when the pumps 30A and 30B are both stopped, or even when the pumps 30A and 30B are operating, the flow amount is detected by the flow switches 49A and 49B. The setting information is to be changed.

When at least one of the pumps 30A and 30B is operating (step S170; No), the controller 65 reduces the amount of water discharged from the pumps 30A and 30B to a small amount based on the detection values from the flow switches 49A and 49B. (Step S180). The control unit 65 may change the setting information when both the pumps 30A and 30B are stopped (S170; Yes) or when the amount of water discharged from the pump 30 is a small amount of water (S180; Yes). to decide. At this time, the control unit 65 stores the setting information and time stored in the communication memory 67 in each of the control memory 66 and the non-volatile memory 68 (step S190), and the process of step S120 again. Return to. By this processing, setting information used for control is changed. In the present embodiment, the control unit 65 also stores the time when changing the setting information stored in the control memory 66 and the nonvolatile memory 68. This time may be the time when the change command is received, or may be the time when the setting information of the nonvolatile memory 68 is changed. By storing the time in this way, it is possible to confirm the situation when the setting information was changed last time, and to confirm that the setting information has been changed due to an erroneous operation or the like. Note that the control unit 65 may store only the latest change time, or may store a predetermined number of past change times. Further, when the setting information of the nonvolatile memory 68 or the like is changed, the control unit 65 may display and notify on the display unit 72, or a signal indicating that the setting information has been changed from the communication unit 73 to the outside. You may send it.
Moreover, you may memorize | store the information which can identify | isolate the solid of the external indicator 80 used for the change of setting information. The user who has changed the setting information can be identified from the individual identification information, and security can be enhanced.

  Without being limited to the above-described embodiment, the control unit 65 may not change the setting information when the pumps 30A and 30B are not stopped even if the amount of water discharged from the pumps 30A and 30B is small. . Moreover, the control part 65 is good also as what changes setting information irrespective of the driving | operation stop of pump 30A, 30B. Furthermore, in the above-described embodiment, the control unit 65 changes the setting information while the pumps 30A and 30B are in operation and waits for the amount of water discharged from the pumps 30A and 30B to be small. . However, the present invention is not limited to such an example. While the pumps 30A and 30B are in operation, the control unit 65 may not accept the change command from the external display 80, execute the notification process, and return to the process of step S120. In the above-described embodiment, the error detection of the change command is performed. However, such error detection may not be performed.

(Modification)
FIG. 6 is a diagram illustrating a modified control unit and an external display. The control unit 65A according to the modification is an embodiment in that it includes a control unit side antenna unit 76 instead of the communication unit 73 and an integrated circuit 77 connected to the control unit side antenna unit 76. The control part is different. In the example illustrated in FIG. 6, the control memory 66, the communication memory 67, and the nonvolatile memory 68 according to the embodiment are included in the storage unit 78. The integrated circuit 77 is electrically connected to the storage unit 78. 6 does not include the display unit 72, the control unit 65A illustrated in FIG. Moreover, the control part 65A of a modification may be provided integrally with other structures of the water supply apparatus 10 such as the pumps 30A, 30B, or the water supply apparatus 10 as a device for relaying data of the water supply apparatus 10. It may be provided apart from other configurations.

The external display device 80 according to the modification includes a display-side antenna unit 81 that transmits and receives radio waves, a display unit 82, a battery 83, and a data reader 84. In the external display 80, data received by the display-side antenna unit 81 is read by the data reader 84. Then, data read by the data reader 84 (for example, the target pressure SV, the current pressure PV, the frequencies of the pumps 30A and 30B, etc.) is displayed on the display unit 82. The battery 83 supplies power to the display-side antenna unit 81, the data reader 84, and the display unit 82.

  As the external display device 80, 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, so that the cost of the water supply device can be reduced. Moreover, since several users can display the state of the water supply apparatus 10 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 a 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 pumps 30A and 30B.

The external display device 80 is connected to the control unit 65A by a near field communication (NFC) technology. More specifically, when the display-side antenna unit 81 generates a radio wave in a state where the external display device 80 is close to the control unit 65A, the control-unit-side antenna unit 76 receives the radio wave, and the control-unit-side antenna unit 76 Converts radio waves into electric power. This electric power is supplied to the integrated circuit 77 and the storage unit 78 to drive the integrated circuit 77 and the storage unit 78. When the external display 80 reads the data in the storage unit 78, the integrated circuit 77 reads the data stored in the storage unit 78 based on the communication data included in the radio wave and sends the data to the control unit side antenna unit 76. send. The control unit side antenna unit 76 transmits radio waves together with data to the display unit side antenna unit 81. The data reader 84 reads the data received by the display-side antenna unit 81 and causes the display unit 82 to display the data.
When the external display device 80 changes the data in the storage unit 78, the integrated circuit 77 changes the data in the storage unit 78 based on the communication data included in the radio wave, and changes the data to the control unit side antenna unit 76. Send data that means that was executed. The control unit side antenna unit 76 transmits radio waves together with data to the display unit side antenna unit 81. The data reader 84 reads the data received by the display-side antenna unit 81 and displays on the display unit 82 that the data change has been executed.

  The external display device 80 may include a clear button 86 for erasing the display and a reset button (not shown) for resetting data. When the user presses the clear button 86, the display on the display unit 82 is erased. When the reset button is pressed, a reset signal is transmitted to the control unit 65A, and the control unit 65A that has received the reset signal resets data such as maintenance information. The clear button 86 of the present embodiment is a virtual button that appears on the screen of the display unit 82, but the clear button 86 may be a mechanical button provided outside the display unit 82. Although the control unit 65A of the modification does not include a reset button, the control unit 65 may be provided with a clear button and a reset button.

  In the modification, the data stored in the storage unit 78 of the control unit 65A is transmitted from the control unit 65A to the external display device 80 by wireless communication. According to the modified example, even when the water supply apparatus 10 is not turned on, the control unit side antenna unit 76 generates power from the radio wave emitted from the external display device 80 and drives the integrated circuit 77 and the storage unit 78. Can do. Therefore, even when power is not being supplied to the control unit 65 during maintenance of the water supply device 10, the external display device 80 acquires and displays data from the storage unit 78 of the control unit 65, or displays the data in the storage unit 78. Stored data can be changed. At this time, the integrated circuit 77 of the control unit 65A may perform the setting information change process shown in FIG.

NFC is a technology for mutual communication at a short distance of several centimeters. When the control unit 65A of the modified example is provided integrally with the other configuration of the water supply apparatus 10, when displaying or changing various information on the external display device 80, the user and the maintenance staff can reach a distance that allows mutual communication. The external display device 80 is brought closer to the control unit 65A. This means that when operating the external display 80, the user and maintenance personnel are near the water supply apparatus 10. For this reason, it leads to preventing the unexpected operation | movement of the water supply apparatus 10 resulting from incorrect operation that a reset button is pushed, for example during replacement work of consumables, and a pump starts. In addition, at a site where a plurality of water supply apparatuses 10 are installed, since mutual communication is possible at a short distance of the water supply apparatus 10 that is desired to be displayed, an error display that the state of another unintended water supply apparatus is displayed or set is changed. Or an erroneous operation can be prevented.

  In FIG. 4, the communication unit 73 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, pump operation information and the like are transmitted from the communication unit 73 to the remote monitoring device. The remote monitoring device may include a display unit that displays the received data. Further, the remote monitoring device may transmit the data received from the water supply device 10 to the external display device 80. Moreover, the external display device 80 and the remote monitoring device may transmit and store data received from the water supply device 10 to an external server. Various data may be written from the remote monitoring device, various data may be written from the external display device to the remote monitoring device, and various data may be written from the remote monitoring device to the water supply device 10.

  The device information may include model identification information (for example, model name, model number, etc.) indicating the configuration of the water supply device 10. Moreover, the control part 65 uses the correspondence table memorize | stored beforehand, and is apparatus information (for example, the number of pumps, the output of a pump, the diameter of a pump, and a water supply system at least 1 from the model name). Information). Conversely, the control unit 65 may acquire the model identification information of the water supply device based on the device information stored in the nonvolatile memory 68. Then, the control unit 65 may display the acquired device information or model identification information on the external display device 80.

  Further, the device information may include a serial number for identifying the individual water supply device 10. Moreover, the external indicator 80 and the remote monitoring device transmit the serial number received from the water supply device 10 to the external server, and device information of the water supply device 10 corresponding to the serial number stored in the external server (for example, the number of pumps) , At least one of the pump output, pump diameter, and water supply method) may be acquired. Then, data may be displayed on the external display device 80 using the acquired device information or model identification information, and further, the setting of the water supply device 10 may be changed from the external display device 80.

  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 or omission of each constituent element described in the claims and the specification 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 is achieved. It is.

DESCRIPTION OF SYMBOLS 10 ... Water supply apparatus 20 ... Base 30A, 30B ... Pump 40 ... Discharge piping 45 ... Connection piping 48 ... Pressure sensor 50 ... Pressure tank 60 ... Control panel 65, 65A ... Control part 66 ... Control memory 67 ... Communication memory 68 ... Non-volatile memory 69 ... arithmetic unit 70 ... I / O unit 71 ... setting unit 72 ... display unit 73 ... communication unit 76 ... control unit side antenna unit 77 ... integrated circuit 78 ... storage unit 79 ... operation panel 80 ... external display

Claims (12)

A water supply device for supplying water to a water supply object,
At least one pump for transferring water;
A control unit for controlling the pump;
With
The control unit includes a rewritable nonvolatile memory and a communication unit configured to communicate with an external display,
In the nonvolatile memory, device information including at least one of the number of the pumps, the water supply method, and model identification information indicating the configuration of the water supply device, and the pump set by the user to control the pump And setting information used to
The control unit sets the changeable range of the setting information based on the device information stored in the nonvolatile memory, and receives the change instruction of the setting information from the external display, the change instruction The setting information stored in the nonvolatile memory is changed when the change of the setting information by the change is within the changeable range, and the change of the setting information by the change command is outside the changeable range. Do not change the setting information stored in
Water supply device. The control unit changes the setting information stored in the nonvolatile memory when the amount of water discharged from the pump is smaller than a predetermined amount.
The water supply apparatus according to claim 1. The setting information includes change restriction information indicating a change restriction of the setting information,
The control unit does not change the setting information stored in the nonvolatile memory even when the change command is received, when the change restriction information indicates prohibition of changing the setting information.
The water supply apparatus of Claim 1 or 2. The control unit does not change the setting information stored in the nonvolatile memory when the change command does not comply with a predetermined encoding rule.
The water supply apparatus of any one of Claim 1 to 3. When the setting information stored in the non-volatile memory is changed by the change command, the control unit stores in the non-volatile memory the time when the setting information is changed or the time when the change command is received. ,
The water supply apparatus of any one of Claim 1 to 4. The control unit receives the change command and notifies when the setting information stored in the nonvolatile memory is not changed,
The water supply apparatus of any one of Claim 1 to 5. The control unit includes a main board for controlling the pump, and a communication board provided with the communication unit and the nonvolatile memory,
The main board is provided with a memory separately from the nonvolatile memory,
The control unit stores the device information stored in the nonvolatile memory when the water supply device is activated in the memory.
The water supply apparatus of any one of Claim 1 to 6.   The water supply apparatus of any one of Claim 1 to 7 further provided with the display part which displays the information regarding control of the said pump.   The pump device according to any one of claims 1 to 8, wherein the communication unit transmits information on control of the pump to the external display.   The pump device according to claim 1, wherein the communication unit is a control unit side antenna unit that receives radio waves from the external display and converts the radio waves into electric power.   The pump device according to any one of claims 1 to 10, wherein the communication unit communicates with the external display by near field communication (NFC). A method of controlling a water supply device for supplying water to a water supply object,
Device information including at least one of the number of pumps of the water supply device, a water supply method, and model identification information of the water supply device, and setting information that is set by a user and used to control the pump In a non-volatile memory included in the water supply device;
Setting a changeable range of the setting information based on the device information stored in the nonvolatile memory;
When the setting information change command is received from an external display, if the setting information change by the change command is within the changeable range, the setting information stored in the nonvolatile memory is changed, and the change Not changing the setting information stored in the non-volatile memory when the change of the setting information by a command is outside the changeable range; and
Control method of water supply apparatus including

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