JP7576482B2 - Fluid supply device, computer - Google Patents

Description

The present invention relates to a fluid supply device.

A water supply device, which is an example of a fluid supply device, is used to supply water (
Water supply devices are widely used as devices for supplying water (fluids). A water supply device generally includes a pump for transporting water, a control unit for controlling the operation of the pump, and a pressure tank provided in the water supply pipe on the discharge side of the pump.

Recently, direct-connected water supply systems have been used to supply water to high-rise buildings. Such water supply systems include a first water supply unit for the lower floors and a second water supply unit for the higher floors, which are connected in series. The suction port of the first water supply unit is directly connected to the water main, and water is supplied to the lower floors of the building by this first water supply unit. Meanwhile, the second water supply unit is located on the middle floors of the building, and boosts the water supplied from the first water supply system and supplies it to the higher floors.

Although the basic internal configuration of the water supply unit is the same as that of a water supply device that is used alone and not connected, in this specification, the water supply device is defined as being composed of multiple water supply units that are directly connected. Also, the number of stages to which the water supply units are directly connected is not limited to two as described above, and may be three or more. Also, in this specification, the water supply unit is defined as an example of a fluid supply unit.

For example, Patent Document 1 (JP 2020-45747 A) describes a water supply system in which multiple water supply devices supply water to water supply targets within a building, in which the multiple water supply devices are capable of communicating with each other via power line communication that uses the building's power lines as a communication line.

JP 2020-45747 A

In a water supply device that supplies water to a building using multiple water supply units, a first water supply unit and a second water supply unit are configured to communicate with each other to exchange their operating status. This allows each water supply unit to control its own operation according to the operating status of the other water supply unit. In the invention described in Patent Document 1, when a communication abnormality is detected, the pump in the second water supply unit is configured to start at a startup speed slower than the normal startup speed.

However, in the conventional technology described in Patent Document 1, each water supply unit exchanges data related to the pressure on the discharge side of the pump and data related to the rotation speed of the motor that drives the pump via a communication line to control its own water supply unit, but since each water supply unit is basically operated independently, it does not enable efficient operation from a bird's-eye view of the entire water supply system.

In consideration of the above-mentioned problems, the present invention aims to provide a fluid supply device that operates not only by referring to data related to the operating status of each water supply unit, but also by referring to more comprehensive data.

In order to achieve the above object, a fluid supply device according to an aspect of the present invention comprises:
A fluid supply device including one or more fluid supply units installed in a building, the fluid supply units having a motor whose rotation is controlled by an inverter and a pump that uses the motor as a drive source to transport a fluid,
A usage trend acquisition unit that acquires usage trends of a fluid in a consumer in the building;
a calculation unit that calculates parameters when the inverter of one or more fluid supply units controls the motor based on the usage trend of the fluid acquired by the usage trend acquisition unit;
Includes.

According to the fluid supply device of the present invention, control settings for operating the water supply unit are calculated based on the fluid usage trends acquired by the usage trend acquisition unit (sensor group 45) which acquires the fluid usage trends of consumers within the building, thereby enabling efficient operation from a bird's-eye view of the entire water supply device.

Other objects, configurations and effects will become apparent from the detailed description of the invention described below.

1 is a schematic diagram showing an example of a building 1 to which a water supply device 10 (fluid supply device) according to the present invention is applied. 2 is a schematic diagram illustrating the structure of a water supply unit WSU _n in the water supply device 10. FIG. FIG. 2 is a hardware configuration diagram showing an example of a computer 200. FIG. 2 is an image diagram illustrating measuring instruments, sensors, etc. installed at a consumer's facility. 1 is a table showing an example of data acquired by measuring instruments, sensors, etc. installed in a consumer facility. 1 is a diagram showing a control concept of a water supply device 10 (fluid supply device) according to the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The scope necessary for the explanation to achieve the objective of the present invention is shown diagrammatically, and the scope necessary for the explanation of the relevant parts of the present invention will be mainly explained, and the parts where explanation is omitted will be based on publicly known technology.

The water supply device 10 according to the present invention can be installed and used in buildings and facilities such as apartment buildings, office buildings, public facilities, commercial facilities, factories, etc. Fig. 1 is a schematic diagram showing an example of a building 1 to which the water supply device 10 according to the present invention is applied. In the water supply device 10 according to the present invention, a direct-connected booster water supply system is adopted. Such a direct-connected booster water supply system is used in high-rise buildings (for example, buildings with 16 or more floors).

In the following embodiment, the water supply device 10 according to the present invention is applied to one building 1, but the concept of the present invention can be applied to a plurality of buildings. The concept of the present invention can also be applied to the control of a single water supply unit.

As shown in FIG. 1, the water supply device 10 includes a first water supply unit WSU ₁ connected to a water main 2 and a second water supply unit WSU 2 connected in series to the first water supply unit WSU ₁ .
The building ₁ has a first water supply unit WSU ₂ and a third water supply unit WSU ₃ connected in series to the second water supply unit WSU 2. The first water supply unit WSU ₁ is installed at ground level or underground, the second water supply unit WSU ₂ is installed, for example, on the 16th floor of the building 1, and the third water supply unit WSU ₃ is installed, for example, on the 30th floor of the building 1.

In this embodiment, the water supply device 10 will be described as an example in which three stages of water supply units WSU are connected as shown in Figure 1, but the number of stages of water supply units WSU may be two stages or four stages or more. Also, in this embodiment, the water supply units may be generalized and described as WSU _n . In this case, the water supply units WSU _n installed on the lower floors of the building 1 have a smaller number n. Also, the water supply pipe connected to the discharge side of the water supply unit WSU _n is given the reference symbol 7 _n , and the pipes branching off from the water supply pipe 7 _n and conducting water to each consumer in the building 1 are referred to as branch pipes 9 _n.
It is called.

In addition, in this embodiment, the water supply unit WSU _n is described as supplying water as a fluid, but the water supply unit WSU _n may also supply liquids other than water, such as fuel and chemicals, as well as fluids including gases such as gas, hydrogen, and oxygen.

The suction port of the first water supply unit WSU ₁ is connected to the water main 2 via a water distribution pipe 7 _0. In this water distribution pipe 7 ₀ , a pressure reducing backflow preventer 8 is connected in front of the suction port of the water supply unit WSU _1. The installation of this pressure reducing backflow preventer 8 is mandatory to reliably prevent backflow of water into the water main 2. Note that the pressure reducing backflow preventer is a backflow preventer configured such that two check valves are arranged to sandwich an intermediate chamber in which a relief valve is arranged.

The discharge outlet of the first water supply unit _WSU1 and the suction port of the second water supply unit _WSU2 are connected by a water distribution pipe ₇₁ , and this water distribution pipe ₇₁ is connected via branch pipes ₉₁ to each customer on the 15th floor (lower floors) of building 1.

The discharge outlet of the second water supply unit _WSU2 and the suction port of the third water supply unit _WSU3 are connected by a water distribution pipe ₇₂ , and this water distribution pipe ₇₂ is connected via branch pipes ₉₂ to each of the customers on the 16th to 29th floors (middle floors) of building 1.

A water distribution pipe ₇₃ is connected to the discharge outlet of the third water supply unit _WSU3 , and this water distribution pipe ₇₃ is connected via a branch pipe ₉₃ to each customer on floors higher than the 30th floor of building 1, including the 30th floor.

The first water supply unit WSU ₁ boosts the pressure of water from the water main 2 to supply water to the consumers on the lower floors of the building 1 and also supplies water to the water supply unit WSU ₂ .
The first water supply unit WSU ₂ pressurizes the water transferred from the first water supply unit WSU ₁ to supply water to each consumer on the middle floors of the building 1 and also supplies water to the third water supply unit WSU ₃ , and the third water supply unit WSU ₃ pressurizes the water transferred from the second water supply unit WSU ₂ to supply water to each consumer on the upper floors of the building 1.

FIG. 2 is a schematic diagram illustrating the structure of the water supply unit WSU _n in the water supply apparatus 10. As shown in FIG.
Fig. 2(A) shows the structure of a water supply unit WSU _n according to a conventional example, and Fig. 2(B) shows a structure suitable for the water supply unit WSU _n according to the present invention. The water supply unit WSU _n having the structure shown in Fig. 2(A) can also be used as the water supply unit WSU _n of the water supply device 10 according to the present invention by adding a configuration equivalent to the network module NWM _n . With regard to the piping system, the structure in Fig. 2(B) omits some of the configuration from the structure in Fig. 2(A). Below, the piping system will be described based on the structure in Fig. 2(A) in particular.

As shown in Fig. 2(A), the water supply unit _WSUn includes a pump _Pn connected to the water main 2 and the water supply unit WSUn _-1 via a water distribution pipe _7n-1 , a motor _Mn as a drive source for driving the pump _Pn , an inverter _INVn for increasing or decreasing the rotation speed of the motor _Mn , a suction side pressure sensor _PSn1 disposed on the suction side of the pump _Pn , a check valve _CVn disposed on the discharge side of the pump _Pn , a flow switch _SWn disposed on the discharge side of the check _{valve CVn} , a discharge side pressure sensor _PSn2 , and a pressure tank _PTn . These components are housed, for example, in a cabinet. In this embodiment, a set of the pump _Pn , the motor M
_n , inverter INV _n , check valve CV _n , and flow switch SW _n are arranged in parallel, but two or more sets of pumps, motors, inverters, check valves, and flow switches may be provided in parallel.

The check valve CV _n is provided in a discharge pipe connected to the discharge port of the pump P _n .
n is a valve for preventing backflow of water when the pump _{P n} stops. The flow switch SW _n is a flow detector that detects when the flow rate of water flowing through the discharge pipe drops to a predetermined value. The suction side pressure sensor PS _n1 is a water pressure gauge for measuring the suction side pressure of the water supply unit WSU _n . The discharge side pressure sensor PS _n2 is a water pressure gauge for measuring the discharge side pressure of the water supply unit WSU _n . The pressure tank PT _n is a pressure retainer for retaining the discharge side pressure while the pump P _n is stopped. The pressure tank PT _n has a diaphragm (not shown) that divides the inside of the container into an air chamber and a water chamber. The air chamber has air sealed therein beforehand, and the water chamber is connected to the discharge pipe.

The water supply unit WSU _n further includes a control unit CU _n for controlling the water supply operation, and the inverter INV _n , flow switch SW _n , suction side pressure sensor PS _n1 , and discharge side pressure sensor PS _n2 are connected to the control unit CU _n via signal lines. In the drawing, the dashed line indicates a data communication line. In the structure of FIG. 2(A), when the flow switch SW _n detects that the water flow rate has dropped to a predetermined value, the control unit CU _n issues a command to the inverter INV _n to temporarily increase the operating speed of the pump P _n , and stops the operation of the pump P _n after increasing the discharge side pressure to a predetermined stop pressure. On the other hand, when the discharge side pressure drops to a predetermined start pressure, the control unit CU _n issues a command to the inverter INV _n to start the operation of the pump P _n . This start pressure is a threshold value that serves as a trigger to start the pump P _n .

In the water supply unit _WSUn in Fig. 2(A), the pump _Pn is driven at a variable speed by the inverter _INVn based on the output signals of the flow switch _{SWn and} the discharge side pressure sensor _PSn2 . The operating status of the pump _Pn can be obtained based on control _signals (control command values for turning the pump _Pn on or off, control command values for the rotation speed of the motor _Mn , etc., the voltage applied to the motor _Mn and its frequency, etc.) sent from the control unit CUn to the inverter INVn. The operating status of the pump _Pn may also be obtained from the output frequency of the inverter _INVn . The control unit _CUn is also capable of exchanging control information with other water supply units WSU.

Generally, constant discharge pressure control is performed to control the operating speed of the pump _Pn so that the pressure signal measured by the discharge pressure sensor _PSn2 coincides with a set target pressure, thereby controlling the discharge pressure of the pump _Pn to be constant, or constant estimated terminal pressure control is performed to appropriately change the target value of the discharge pressure of the pump _Pn to control the supply water pressure at the terminal water faucet to be constant. According to these controls, the pump _Pn is driven at a rotation speed that corresponds to the water demand at each time, thereby achieving energy conservation.

On the other hand, in the case of the present invention shown in FIG. 2B, the control unit CU _n is connected to the network module NWM _n
The network module NWM _{n is connected to the network 240 for data communication, and the network module NWM n is} also capable of data communication with the network 240. This makes it possible, for example, to transmit data relating to the detection result by the discharge _pressure sensor PS _n2 from the control unit CU _n to the computer ₂₀₀ , and also makes it possible to transmit parameters (ON/OFF of the inverter,
It is possible to transmit the command value for the number of rotations, frequency, voltage, etc. to the motor _Mn . The computer 200 may be a general-purpose computer, or may be a dedicated computer specialized for the water supply device 10 according to the present invention.

As shown in FIG. 1, a water supply unit WSU constituting a water supply device 10 according to the present invention
The water supply unit _{WSU 1} , the water supply unit WSU ₂ , and the water supply unit WSU ₃ are all connected to a computer 200 via a network 240 so as to be capable of data communication.
00. In this embodiment, an example is shown in which each water supply unit WSU _n is connected to the computer 200 via the network 240, but each water supply unit WSU _n may be connected to the computer 200 without going through the network 240.

Each consumer facility is provided with a sensor group 45 capable of detecting data related to fluids including water and detecting other trends at the consumer facility, and data collected by the sensor group 45 is transmitted to the computer 200 via the network 240. The computer 200 receives the data collected by the sensor group 45 and:
Based on this, settings for controlling each water supply unit WSU _n in the water supply apparatus 10 are calculated.

An example of a sensor included in the sensor group 45 will be described. The branch pipe _9n that supplies water to each customer includes a flow meter 47 that measures the amount of water used at each supply destination.
is provided. When there are multiple supply destinations, the flow meter 47 can also measure a total usage flow rate obtained by adding up the flow rates of the multiple supply destinations. Furthermore, a water meter, for example, can be used as the flow meter 47. Data measured by the flow meter 47 is transmitted to the computer 200 via the network 240. Note that the sensor group 45 is not limited to such a flow meter 47, but is intended to obtain data related to a wider range of consumers, and other examples of the sensor group 45 will be described later.

FIG. 3 is a hardware configuration diagram showing an example of the computer 200.
Either a general-purpose or dedicated water supply unit can be used.
The control unit CU _n in the SU _n can also use the computer 200 .

As shown in FIG. 2, the computer 200 includes, as its main components, a bus 210,
A processor 212, a memory 214, an input device 216, a display device 218, a storage device 220, a communication I/F (interface) unit 222, an external device I/F unit 224, an I
The computer 200 includes an I/O (input/output) device I/F unit 226, and a media input/output unit 228. Note that the above components may be omitted as appropriate depending on the application in which the computer 200 is used.

The processor 212 is one or more arithmetic processing devices (CPU, MPU, GPU, DSP, etc.).
The memory 21 is made up of a plurality of memory modules, each of which functions as a control unit for controlling the entire computer 200.
The internal memory 4 stores various data and programs 230 and is composed of, for example, a volatile memory (DRAM, SRAM, etc.) that functions as a main memory, and a non-volatile memory (ROM, flash memory, etc.).

The input device 216 is, for example, a keyboard, a mouse, a numeric keypad, an electronic pen, etc. The display device 218 is, for example, a liquid crystal display, an organic EL display, electronic paper, a projector, etc. The input device 216 and the display device 218 may be integrated together, such as a touch panel display. The storage device 220 is, for example, a HDD, an SSD, etc., and stores various data required for the execution of the operating system and the program 230.

The communication I/F unit 222 is connected to a network 240 such as the Internet or an intranet by wire or wirelessly, and transmits and receives data to and from other computers in accordance with a predetermined communication standard. The external device I/F unit 224 is connected to an external device 250 such as a printer or scanner by wire or wirelessly, and transmits and receives data to and from the external device 250 in accordance with a predetermined communication standard. Note that an international standard communication means can typically be used as the wireless communication means of the external device I/F unit 224. An example of an international standard communication means is IEEE 802.
15.4, IEEE802.15.1, IEEE802.15.11a, 11b, 11g
, 11n, 11ac, 11ad, ISO/IEC14513-3-10, IEEE802
15.4g and the like. In addition, the external device I/F unit 224 supports wireless communication using Bluetooth (registered trademark), Bluetooth Low Energy, Wi-Fi, etc.
i, ZigBee (registered trademark), Sub-GHz, EnOcean (registered trademark), etc. can also be used. The I/O device I/F unit 226 is connected to an I/O device 260 such as various sensors and actuators, and transmits and receives various signals and data, such as detection signals from sensors and control signals to actuators, between the I/O device 260. The media input/output unit 228 is composed of a drive device such as a DVD drive, a CD drive, etc., and reads and writes data from and to media 270 such as DVDs and CDs.

In the computer 200 having the above configuration, the processor 212 executes the program 23.
2, the processor 212 loads the program 230 into a work memory area of the memory 214, executes the program 230, and controls each unit of the computer 200 via the bus 210. The program 230 may be stored in the storage device 220 instead of the memory 214. The program 230 may be recorded on a non-transitory recording medium such as a CD or DVD in an installable file format or an executable file format, and provided to the computer 200 via the media input/output unit 228. The program 230 may be provided to the computer 200 by being downloaded via the network 240 through the communication I/F unit 222. The computer 200 may also control various functions that are realized by the processor 212 executing the program 230, for example, as an FP.
It may be realized by hardware such as GA or ASIC.

The computer 200 is, for example, a desktop computer or a portable computer, and is an electronic device of any type. The computer 200 may be a client computer, a server computer, or a cloud computer.

Next, the sensor group 45 that acquires various data at the consumer will be described. FIG. 4 is an image diagram illustrating measuring instruments, sensors, etc. installed at the consumer, and shows a perspective view of a room in an apartment or the like that is a consumer. FIG. 5 is a table showing an example of data acquired by measuring instruments, sensors, etc. installed at the consumer. The main ones in the sensor group 45 are those that directly measure the flow rate of a fluid (water in this embodiment), but the present invention is not limited to this and also includes measuring instruments, sensors, etc. that can indirectly grasp the usage trend of the fluid at each consumer. These sensor groups 45 are also referred to as a fluid usage trend acquisition unit.

The main components of the sensor group 45 are a flow meter 47 and a pressure meter 49 connected to the branch pipe 9 _n of each customer. The measurement data obtained by these sensors is input to the computer 20.
The pressure data of the fluid (water) acquired by the pressure gauge 49 at each consumer provided at the end of the branch pipe 9 _n is transmitted to the customer's local network 100.
This data is directly related to the feel of the liquid (water) when in use, and is one of the most important pieces of data that can be obtained by the sensor group 45.

The sensor group 45 may also include sensors that acquire data related to lifelines other than water.
A power meter 54 and a gas flow meter 56 are attached to each of the fluids, and the power data and gas flow data acquired by these are also transmitted to computer 200. It has been found that data relating to the usage of fluids other than the fluid of interest (water), i.e., data relating to the amount of electricity usage and data relating to the amount of gas usage acquired by power meter 54 and gas flow meter 56, are closely correlated with the amount of fluid (water) used by the consumer, and in the present invention, these data are used as data for understanding the usage trends of fluids at each consumer.

Furthermore, the sensor group 45 may include a meter that detects the trend of water usage at each location in the demand. Specifically, the sensor group 45 may include a washbasin water flow meter 61 that measures the amount of water usage at the washbasin, a washing machine water flow meter 62 that measures the amount of water usage at the washing machine,
The flow rate data measured by these devices can include a bathroom water flowmeter 63 that measures the amount of water used in the bathroom, a kitchen water flowmeter 64 that measures the amount of water used in the kitchen, and a toilet water flowmeter 65 that measures the amount of water used in the toilet.
It is transmitted to the computer 200.

Furthermore, the sensor group 45 may include sensors that detect the opening and closing of doors and the like at various locations within the consumer. Specifically, the sensor group 45 may include a front door opening and closing sensor 67 that detects the opening and closing of the front door, a bathroom door opening and closing sensor (not shown) that detects the opening and closing of the bathroom door, a shower curtain sensor (not shown) that detects the opening and closing of the shower curtain, and a toilet door opening and closing sensor (not shown) that detects the opening and closing of the toilet door. The detection data acquired by these sensors is also transmitted to the computer 200. For example, if a record of people entering and leaving the room can be grasped based on the opening and closing of the bathroom door, it is possible to estimate the usage flow rate of the fluid from the record of people entering and leaving the room. In the present invention, the management information that can be acquired by each of the above sensors, such as the front door opening and closing sensor 67, is referred to as data regarding people entering and leaving the consumer space.

Furthermore, the sensor group 45 may include sensors that detect the lighting status at each location within the demand. Specifically, the sensor group 45 may include a bathroom lighting switch state detection sensor (not shown) that detects the lighting status of the bathroom lighting, and a toilet lighting switch state detection sensor (not shown) that detects the lighting status of the toilet lighting. The detection data acquired by these sensors is also transmitted to the computer 200. For example, if it is known that the toilet lighting is turned on, it is possible to estimate the flow rate used in the toilet. The data acquired by the sensors that detect the lighting status of the lighting as described above can be understood as data related to human activities in the demand.

Furthermore, the sensor group 45 may include sensors that are not shown in Figures 4 and 5 and that can indirectly estimate the fluid usage trends of the consumer. For example, a human presence sensor may be installed in each room where the fluid may be used, i.e., the toilet, bathroom, kitchen, etc., and the usage flow rate may be estimated from the detection results of the human presence sensor. Furthermore, the usage flow rate may also be estimated from the amount of electricity usage measured by an electric meter or the amount of gas usage measured by a gas meter installed in each room.

Control in the water supply device 10 (fluid supply device) according to the present invention configured as above will be described with reference to Fig. 6. Fig. 6 shows the main components of the water supply device 10.

The trends in the use of fluid (water in this embodiment) in the consumer facility collected by the sensor group 45 as described above are transmitted to the computer 200. Based on this, the computer 200 calculates whether the inverter INV _n in each water supply unit WSU _n is in a state where the motor M _n
The parameters for controlling the motor Mn are calculated. Here, the parameters include a rotation speed command value for the motor _Mn , a frequency, a voltage, etc. The calculation results are transmitted to each water supply unit _WSUn .

In the example of this embodiment shown in FIG. 6, the parameters when the inverter _INV1 controls the motor _M1 , the parameters when the inverter _INV2 controls the motor _M2 ,
The parameters for controlling _the motor _M3 are calculated by the computer 200,
The calculated parameters are transmitted to the water supply units WSU ₁ , WSU ₂ , and WSU ₃ ;
The inverter INV in each water supply unit WSU is controlled.
Although the relationship of one water supply unit WSU has been described, the claims express the relationship of a plurality of water supply units (fluid supply units).

Further, the computer 200 calculates the start/stop timing of the inverter INV _n in each water supply unit WSU _n based on the received measurement data and detection results from the sensor group 45, and transmits the calculation results to each water supply unit WSU _n .
In the present embodiment, it has been described that the building 1 is divided into low, middle, and high floors, but for example, if the sensor group 45 determines that the fluid usage trend on the high floors is on the rise, the _inverters INV 1 and INV 2 of the water supply units WSU 1 and WSU 2 on the low and middle floors are started up in stages in advance to prepare for the transfer of water to the water supply unit WSU 3, and then after a predetermined time ... high floors are started up in stages in advance to prepare for the transfer of water to the water supply unit WSU 3, and then after a predetermined time, the inverters INV ₁ and INV ₂ of the water supply units WSU ₁ and WSU ₂ on the high floors are started up in stages in advance to prepare for the transfer of water to the water supply unit WSU ₃ , and then after a predetermined time, the inverters INV 1 and INV 2 of the
For example, the inverter INV ₃ of the water supply unit WSU ₃ may be started at the maximum setting. Also, for example, if the sensor group 45 determines that the fluid usage trend only on the lower floors is on the rise, the inverter INV ₁ of the water supply unit WSU ₁ may be started only.

In the example of this embodiment shown in FIG. 6, inverters INV ₁ , INV ₂ , and INV
The water supply units WSU 1 , WSU 2 , and WSU ₃ calculate the start and stop timings of each of the water supply units WSU ₁ , WSU ₂ , and WSU ₃ and transmit these to the water supply units WSU ₁ , WSU 2 , and WSU 3.
Based on the received start/stop timing, WSU ₂ and WSU ₃ start/stop the inverters INV ₁ , INV ₂ and INV _3. Note that although the relationship between three water supply units WSU has been described here, the claims express the relationship between a plurality of water supply units (fluid supply units).

In addition, the computer 200 calculates a target value for the discharge side pressure sensor PS _n2 of each pump P _n based on the measurement data and detection results received from the sensor group 45, and transmits the calculation results to each water supply unit WSU _n .

In the example of this embodiment shown in FIG. 6, the discharge side pressure sensor PS ₁₂ , the discharge side pressure sensor PS ₂₂ ,
The target value of the discharge side pressure sensor PS ₃₂ is calculated by _{the computer 200 and transmitted to the water supply units WSU 1 ,} WSU ₂ , and WSU ₃ .
The WSU ₃ controls the inverters INV ₁ , INV ₂ , and INV 3 based on the target values of the discharge side pressure sensors PS ₁₂ , PS ₂₂ , and PS _{32 .}
It is possible to correct the control parameters of NV _3. Note that, although the relationship of the discharge side pressure sensor PS _n2 in three water supply units WSU has been described here, the claims express the relationship between a plurality of water supply units (fluid supply units).

As described above, according to the fluid supply device (water supply device 10) of the present invention, control settings for operating the water supply unit are calculated based on the fluid usage trends acquired by the usage trend acquisition unit (sensor group 45) which acquires the fluid usage trends of consumers in building 1, thereby enabling efficient operation from a bird's-eye view of the entire water supply device.

1: Building 2: Water main 7 _n : Water distribution pipe 8: Pressure reducing backflow preventer 9 _n : Branch pipe 10: Water supply device (an example of a fluid supply device)
45: Sensor group 47: Flowmeter 49: Pressure gauge 50: Power supply line 52: Gas pipe 54: Power meter 56: Gas flowmeter 61: Washbasin water flowmeter 62: Washing machine water flowmeter 63: Bathroom water flowmeter 64: Kitchen water flowmeter 65: Toilet water flowmeter 67: Front door opening/closing sensor 200: Computer 210: Bus 212: Processor 214: Memory 216: Input device 218: Display device 220: Storage device 222: Communication I/F (interface) unit 224: External device I/F unit 226: I/O (input/output) device I/F unit 228: Media input/output unit 230: Program 240: Network 250: External device 260: I/O device 270: Media WSU _n (e.g., n = 1, 2, 3): Water supply unit (an example of a fluid supply unit)
NWM _n (e.g., n=1, 2, 3) - network module CU _n (e.g., n=1, 2, 3) - control unit INV _n (e.g., n=1, 2, 3) - inverter M _n (e.g., n=1, 2, 3) - motor P _n (e.g., n=1, 2, 3) - pump PS _n1 (e.g., n=1, 2, 3) - suction side pressure sensor PS _n2 (e.g., _n =1, 2, 3) - discharge side pressure sensor _{CV n (} e.g., n=1, 2, 3) - check valve SW _n (e.g., n=1, 2, 3) - flow switch PT _n (e.g., n=1, 2, 3) - pressure tank

Claims (4)

A fluid supply device including one or more fluid supply units installed in a building, the fluid supply units having a motor whose rotation is controlled by an inverter and a pump that uses the motor as a drive source to transport a fluid,
A usage trend acquisition unit that acquires usage trends of a fluid in a consumer in the building;
A calculation unit that calculates parameters when the inverter of one or more fluid supply units controls the motor based on the usage trend of the fluid acquired by the usage trend acquisition unit ,
the usage trend acquisition unit includes a sensor that directly measures a usage trend of the fluid and a sensor that indirectly measures a usage trend of the fluid;
The usage trend acquisition unit includes a power meter or a gas flow meter as a sensor that indirectly measures the usage trend of the fluid, and acquires data on the amount of electricity used by the consumer or data on the amount of gas used by the consumer.
Fluid supply device. The usage trend acquisition unit includes a sensor that detects opening and closing of a door as a sensor that indirectly measures the usage trend of the fluid, and acquires data regarding the entry and exit of people into and from the consumer space.
The fluid supply device of claim 1 . The usage trend acquisition unit includes a sensor that detects lighting status as a sensor that indirectly measures the usage trend of the fluid, and acquires data on human activities at the consumer facility.
The fluid supply device according to claim 1 or 2. A computer connected via a communication means to one or more fluid supply units installed in a building and a usage trend acquisition unit that acquires usage trends of fluids in consumers in the building,
a receiving unit that receives a usage trend of the fluid in the consumer in the building from the usage trend acquiring unit via the communication means;
A calculation unit that calculates parameters when an inverter of one or more fluid supply units controls a motor based on the usage trend of the fluid received by the receiving unit;
a transmission unit that transmits the parameters calculated by the calculation unit to the plurality of fluid supply units via the communication means ,
the usage trend acquisition unit includes a sensor that directly measures a usage trend of the fluid and a sensor that indirectly measures a usage trend of the fluid;
The usage trend acquisition unit includes a power meter or a gas flow meter as a sensor that indirectly measures the usage trend of the fluid, and acquires data on the amount of electricity used by the consumer or data on the amount of gas used by the consumer.
computer.

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