WO2017090292A1 - Pump device - Google Patents

Pump device Download PDF

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Publication number
WO2017090292A1
WO2017090292A1 PCT/JP2016/075417 JP2016075417W WO2017090292A1 WO 2017090292 A1 WO2017090292 A1 WO 2017090292A1 JP 2016075417 W JP2016075417 W JP 2016075417W WO 2017090292 A1 WO2017090292 A1 WO 2017090292A1
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WO
WIPO (PCT)
Prior art keywords
control unit
temperature
power element
fan
pump
Prior art date
Application number
PCT/JP2016/075417
Other languages
French (fr)
Japanese (ja)
Inventor
正和 駒井
孝英 小澤
佐々木　貴彦
和馬 西村
Original Assignee
株式会社 荏原製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社 荏原製作所 filed Critical 株式会社 荏原製作所
Publication of WO2017090292A1 publication Critical patent/WO2017090292A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating

Definitions

  • the present invention relates to a pump device.
  • the pump device generally includes a pump, an electric motor that operates the pump, and an inverter as a driving device that drives the electric motor at a variable speed.
  • the power element of the inverter generates heat according to the load applied to the electric motor. Specifically, when the pump is pumping a large amount of water, the load applied to the electric motor increases, and the temperature of the power element rises. On the other hand, when the pump is stopped, the temperature of the power element decreases. Therefore, in order to efficiently cool the power element of the inverter, the pump device includes a fan that rotates as the pump starts and stops as the pump stops.
  • the inverter is generally installed in the control panel.
  • the main heat generating components in the control panel are inverter power elements.
  • the load applied to the electric motor is small, so that the current flowing through the power element is small and the heat generation amount of the power element is small. Further, even when the outside air temperature is low and the power element is naturally cooled, it is not necessary to cool the power element.
  • the fan is started and stopped in conjunction with the operation of the pump, the fan starts even when the power element does not need to be cooled, and thus wasteful energy is consumed. Moreover, since the life of the fan is relatively short, if the fan is operated more than necessary, the fan will fail earlier than planned. When a fan fails, the pump device must be shut down to replace the failed fan.
  • the control panel may be installed outdoors. Under such an environment, even when the pump is stopped, the temperature in the control panel becomes very high due to direct sunlight in midsummer. Even if the fan is rotated in such a situation, the temperature in the control panel is unlikely to decrease. Furthermore, in the worst case, the temperature trip function of the power element, that is, the protection function of the inverter is activated, and the pump device cannot pump water.
  • the present invention has been made in view of the above-described problems, and an object of the present invention is to provide a pump device capable of stably continuing the operation of the pump while achieving energy saving.
  • One aspect of the present invention includes a pump, an electric motor that rotates the pump, an inverter that can shift the electric motor, a control unit that includes a control unit that controls the operation of the inverter, and a fan that cools the control unit. And a first temperature sensor for measuring the temperature in the control unit, and a second temperature sensor for measuring the temperature of the power element of the inverter.
  • the fan is activated when the power element temperature is higher than a threshold value of 1 or when the temperature of the power element is higher than a second threshold value, and the temperature of the power element is lower than a third threshold value. Or when the temperature in the control unit is lower than a fourth threshold value, the fan is stopped.
  • the first threshold value, the second threshold value, the third threshold value, and the fourth threshold value are larger in this order.
  • the first temperature sensor is attached to the control unit, and the second temperature sensor is attached to the power element.
  • a preferred embodiment of the present invention is characterized by further comprising a display for displaying the temperature of the power element and the temperature in the control unit, and / or that the fan is operating.
  • the control unit can be connected to an external display device by wired communication or wireless communication.
  • control unit can be connected to the external display device by near field communication (NFC).
  • control unit includes a control unit side antenna unit that receives a radio wave from the external display and converts the radio wave into electric power, and an integrated circuit and a storage unit that are driven by the electric power. It is characterized by providing.
  • control unit stores data indicating the temperature of the power element, the temperature in the control unit, and / or the operation of the fan in the storage unit.
  • the control unit side antenna unit reads the data from a unit, and transmits the data to the external display.
  • the fan is started based on the temperature in the control unit or the temperature of the power element. Therefore, it is possible to prevent the pump device from being stopped due to overheating of the power element, and the operation of the pump can be continued stably. Further, the life of the power element can be extended. Furthermore, according to the present invention, the fan is stopped based on the temperature in the control unit or the temperature of the power element. Therefore, since it is possible to prevent the fan from being operated more than necessary, energy saving can be achieved and the life of the fan can be extended.
  • FIG. 1 It is a schematic diagram which shows the pump apparatus which concerns on one Embodiment of this invention. It is a figure which shows the detail of the pump apparatus shown in FIG. It is a figure which shows the relationship between the temperature in a control unit, the temperature of a power element, and time. It is a figure which shows the relationship between the temperature in a control unit, the temperature of a power element, and time. It is a figure which shows the relationship between the temperature in a control unit, the temperature of a power element, and time. It is a figure which shows the relationship between the temperature in a control unit, the temperature of a power element, and time. It is a figure which shows the more detailed structure of a control part. It is a figure which shows the detail of a memory
  • the present invention is not limited to the following embodiment.
  • the present invention can also be applied to a pump device provided with a land pump unit.
  • FIG. 1 is a schematic view showing a pump device according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing details of the pump device shown in FIG.
  • the pump device includes a submersible pump unit 1 that can be installed in water such as in a well and a land unit 5 that is connected to the submersible pump unit 1 via a suction pipe 4. I have.
  • the submersible pump unit 1 includes a pump 2 having an impeller (not shown) and an electric motor 3 that rotates the pump 2. When the electric motor 3 is driven, the pump 2 rotates and water is sent to the land unit 5 through the suction pipe 4.
  • Land unit 5 is located on the ground.
  • the land unit 5 detects that the control unit 10 that controls the operation of the submersible pump unit 1, the water pipe 11 connected to the suction pipe 4, and the flow rate of water flowing through the water pipe 11 has decreased to a predetermined value.
  • a pressure sensor 13 that measures the discharge side pressure of the pump 2.
  • the flow switch 12 and the pressure sensor 13 are connected to the water distribution pipe 11, and the pressure sensor 13 is provided on the downstream side of the flow switch 12.
  • One end of the water distribution pipe 11 is connected to the suction pipe 4, and the other end is connected to the discharge pipe 18.
  • a water supply device 19 such as a water tap is connected to the discharge pipe 18.
  • a check valve 21 is attached to the suction pipe 4. The check valve 21 is provided to prevent a back flow of water when the pump 2 is stopped.
  • the land unit 5 further includes a pressure tank 15 for holding the discharge side pressure of the pump 2.
  • the pressure tank 15 is connected to the water distribution pipe 11 and is provided on the downstream side of the pressure sensor 13.
  • the pressure tank 15 has a rubber bladder inside the pressure vessel. When the discharge side pressure of the pump 2 increases, the air outside the bladder is compressed and water is stored in a pressurized state. When the pressure in the water distribution pipe 11 decreases, the water held in the bladder is pushed into the water distribution pipe 11 by the compressed air. In this way, even if the pump 2 is stopped, water is supplied from the pressure tank 15 to the water distribution pipe 11 for a while.
  • the control unit 10 includes an inverter 22 that can change the speed of the electric motor 3 and a control unit 20 that controls the operation of the inverter 22.
  • the inverter 22 is connected to the control unit 20.
  • the control unit 20 controls the rotation speed of the electric motor 3, that is, the rotation speed of the pump 2 by controlling the switching operation of a power element (for example, a switching element such as IGBT) 22 a constituting the inverter 22.
  • a power element for example, a switching element such as IGBT
  • the flow switch 12 and the pressure sensor 13 are connected to the control unit 20 via a signal line.
  • the control unit 20 temporarily increases the rotational speed of the pump 2 and stores the pressure in the pressure tank 15 before pump 2. Stop operation.
  • the control unit 20 starts the pump 2.
  • the pump device further includes a fan 28 for cooling the control unit 10.
  • the fan 28 is disposed in the vicinity of the control unit 10. When the fan 28 rotates, air is discharged from the fan 28 and contacts the control unit 10. This air flow cools the control unit 10, particularly the power element 22a, which is a heat source.
  • the pump device includes a first temperature sensor 24 that measures the temperature in the control unit 10, and a second temperature sensor 26 that measures the temperature of the power element 22 a of the inverter 22. .
  • the first temperature sensor 24 is attached to the control unit 20, and the second temperature sensor 26 is attached to the power element 22a.
  • the first temperature sensor 24 only needs to be able to measure the temperature in the control unit 10, and thus is not necessarily attached to the control unit 20.
  • the first temperature sensor 24 may be attached to a protective cover (not shown) that covers the control unit 20 and the inverter 22.
  • the first temperature sensor 24 and the second temperature sensor 26 are connected to the control unit 20 via signal lines.
  • the measured value of the temperature in the control unit 10 is sent from the first temperature sensor 24 to the control unit 20.
  • the measured value of the temperature of the power element 22 a is sent from the second temperature sensor 26 to the control unit 20.
  • the control unit 20 stores in advance a plurality of threshold values relating to the temperature in the control unit 10 and the temperature of the power element 22a.
  • 3 to 6 are diagrams showing the relationship between the temperature in the control unit 10 and the temperature of the power element 22a and time. 3 to 6, the vertical axis indicates the temperature [° C.], and the horizontal axis indicates time.
  • the first threshold value to the fourth threshold value and the upper limit value are shown.
  • the first threshold value and the second threshold value are threshold values for starting the fan 28.
  • the third threshold value and the fourth threshold value are threshold values for stopping the fan 28.
  • the upper limit value is a threshold value for stopping the pump 2 in an emergency or issuing an alarm.
  • the first threshold value, the second threshold value, the third threshold value, and the fourth threshold value are larger in this order, and the upper limit value is larger than the first threshold value.
  • the first threshold value and the fourth threshold value are threshold values related to the temperature in the control unit 10
  • the second threshold value and the third threshold value are threshold values related to the temperature of the power element 22a. It is.
  • the control unit 20 compares the measured value of the temperature in the control unit 10 sent from the first temperature sensor 24 with the first threshold value and the fourth threshold value. Similarly, the control unit 20 compares the measured value of the temperature of the power element 22a sent from the second temperature sensor 26 with the second threshold value and the third threshold value.
  • the control unit 20 starts the fan 28 when the temperature in the control unit 10 is higher than the first threshold value or when the temperature of the power element 22a is higher than the second threshold value. It is configured. Further, the control unit 20 stops the fan 28 when the temperature of the power element 22a is lower than the third threshold value or when the temperature in the control unit 10 is lower than the fourth threshold value. It is configured.
  • the control unit 10 when the temperature in the control unit 10 is lower than the first threshold value and the temperature of the power element 22a is lower than the second threshold value, the control unit 10 needs to be cooled. Therefore, the fan 28 is not started.
  • the control unit 20 can control the fan 28 when the temperature of the power element 22 a is higher than the second threshold value. Start up. When the fan 28 starts to rotate, the control unit 10, in particular, the power element 22a of the inverter 22 is cooled. When the temperature of the power element 22a becomes lower than the third threshold value as a result of the cooling of the control unit 10, or when the temperature in the control unit 10 becomes lower than the fourth threshold value. The control unit 20 stops the fan 28.
  • the temperature of the power element 22a is normally low. However, even though the pump 2 is stopped due to direct sunlight in midsummer. The temperature in the control unit 10 may rise. As shown in FIG. 5, even when the temperature of the power element 22a is lower than the second threshold value, if the temperature in the control unit 10 becomes higher than the first threshold value, the control unit 20 turns off the fan 28. to start.
  • the temperature in the control unit 10 can be prevented from being increased by starting the fan 28 based on the temperature in the control unit 10. Therefore, even if the pump 2 is operated thereafter, the operation of the temperature trip function of the power element 22a, that is, the protection function of the inverter 22 can be avoided.
  • the temperature of the power element 22a becomes lower than the third threshold value as a result of the cooling of the control unit 10, or when the temperature in the control unit 10 becomes lower than the fourth threshold value.
  • the control unit 20 stops the fan 28.
  • the controller 20 is configured to emergency stop the pump 2 when the temperature in the control unit 10 or the temperature of the power element 22a becomes higher than the upper limit value during operation of the pump 2. As shown in FIG. 6, for example, when the temperature of the power element 22 a becomes higher than the upper limit value during operation of the pump 2, the control unit 20 performs an emergency stop of the pump 2. During the operation of the pump 2, even when the temperature in the control unit 10 becomes higher than the upper limit value, the control unit 20 performs an emergency stop of the pump 2. At this time, it is desirable for the control unit 20 to issue an alarm.
  • the control unit 20 uses the other temperature sensor.
  • the fan 28 can be started and stopped based on the measured temperature.
  • the control unit 20 starts and stops the fan 28 based on the temperature in the control unit 10 or the temperature of the power element 22a regardless of the start and stop of the pump 2.
  • the control unit 10 can be cooled by the fan 28 even when the temperature in the control unit 10 rises due to direct sunlight or the like while the pump 2 is stopped. Furthermore, since the temperature rise of the inverter 22 including the power element 22a can be suppressed, the life of the power element 22a can be extended.
  • control unit 20 is configured such that when the temperature in the control unit 10 is lower than the fourth threshold value, or when the temperature of the power element 22a is lower than the third threshold value. Since the fan 28 is stopped, it is possible to prevent the fan 28 from operating more than necessary and achieve energy saving. Furthermore, it is possible to extend the life of the fan 28 whose life is relatively short. By extending the life of the fan 28, the number of times the pump 2 is stopped due to the failure of the fan 28 can be reduced.
  • the pump device further includes a display 49 that displays operation information including the temperature of the power element 22 a and the temperature in the control unit 10 and / or the operation of the fan 28.
  • the control unit 20 includes a setting unit 46, a storage unit 47, a calculation unit 48, an I / O unit 50, and an operation panel 51.
  • the operation panel 51 functions as a human interface.
  • Various setting values relating to operation control of the pump 2 are input to the setting unit 46.
  • the setting unit 46 and the display device 49 are provided on the operation panel 51.
  • the display device 49 may be a liquid crystal panel, and the setting unit 46 may be a touch panel type operation device.
  • the display device 49 is attached to the control unit 20, but the display device 49 may be arranged away from the control unit 20. Further, the display unit 49 may have a configuration in which a liquid crystal panel and a 7-segment LED or an indicator lamp are combined.
  • the storage unit 47 stores the above-described threshold values (that is, the first threshold value to the fourth threshold value and the upper limit value).
  • the threshold value may be stored in advance in the storage unit 47 or may be input to the storage unit 47 through the setting unit 46.
  • the calculation unit 48 monitors the temperatures sent from the first temperature sensor 24 and the second temperature sensor 26, and determines the measured temperature, the first threshold value to the fourth threshold value, and the upper limit value. Compare A CPU is used as the calculation unit 48.
  • the indicator 49 functions as a human interface, and displays operation information including the temperature of the power element 22 a and the temperature in the control unit 10, and / or the operation of the fan 28. The user can erase the display on the display unit 49 by pressing the clear button 53 on the setting unit 46.
  • FIG. 8 is a diagram showing details of the storage unit 47.
  • the storage unit 47 includes a nonvolatile storage area 47 a configured from a nonvolatile memory and a volatile storage area 47 b configured from a volatile memory.
  • the nonvolatile storage area 47a stores the temperature of the power element 22a and the temperature in the control unit 10, and / or the operation history of the fan 28, various set values necessary for the operation of the pump 2, the failure history, the operation history, and the like. It is an area.
  • the volatile storage area 47b is an area for storing the temperature of the power element 22a and the temperature in the control unit 10, and / or the operation of the fan 28, the pressure signal, the pump speed, the current value, the failure, the alarm, and the like.
  • FIG. 9 is a view showing another embodiment of the pump device.
  • an external display device 61 is further provided.
  • the control unit 20 further includes a communication unit 60.
  • the control unit 20 is connected to the external display 61 by wired communication or wireless communication.
  • a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, a tablet, or a dedicated terminal device such as a remote monitor is adopted.
  • the display unit 49 is a simple display unit such as a 7-segment LED or an indicator lamp
  • the external display unit 61 is a high-function display unit using a liquid crystal screen and a touch input method or a push button method for the liquid crystal screen.
  • the external display 61 Since the external display 61 has a much larger amount of information that can be displayed than the simple display 49, the temperature of the power element 22a and the temperature in the control unit 10 and / or the fan 28 is operated on the external display 61. By indicating that the user is not familiar with the pump device, the temperature of the power element 22a and the temperature in the control unit 10 and / or that the fan 28 is operating can be recognized without misunderstanding. .
  • the pump device may be installed in an electrically noisy environment such as a machine room or pump room.
  • a display unit composed of a 7-segment LED, an indicator lamp, a mechanical push button, etc., which is more resistant to electrical noise than a liquid crystal display or a touch panel is used.
  • the pump device can be installed in an environment with a lot of electrical noise.
  • the user uses the dedicated application software to set the temperature of the power element 22a and the temperature in the control unit 10, and Since it is possible to display that the fan 28 is operating, a plurality of dedicated application software is prepared and used properly, so that the temperature of the power element 22a and the temperature in the control unit 10 according to the user's level, and An indication that the fan 28 is operating may be provided.
  • a general-purpose terminal device such as a smart phone, a mobile phone, a personal computer, or a tablet
  • FIG. 10 is a view showing still another embodiment of the pump device.
  • the display unit 49 is not provided in the control unit 20, and only the external display unit (high function display unit) 61 is provided instead.
  • Other configurations are the same as those of the embodiment shown in FIG. According to the embodiment shown in FIG. 10, since it is not necessary to provide the display device itself in the pump device, the cost of the entire pump device can be further reduced.
  • FIG. 11 is a view showing still another embodiment of the pump device.
  • the indicator 49 is a simple indicator such as a 7-segment LED or indicator lamp.
  • the communication unit 60 is connected to an external display 65 provided in a maintenance management company or an administrator room via a public line.
  • the control unit 20 determines the temperature of the power element 22a and the temperature in the control unit 10, and / or that the fan 28 is in operation, and the external display 65 periodically communicates with the control unit 20 through a public line.
  • the controller 20 is inquired of the temperature of the power element 22a and the temperature in the control unit 10 and / or whether the fan 28 is operating.
  • the external display 65 displays the temperature of the power element 22a and the temperature in the control unit 10 and / or the operation of the fan 28.
  • the external indicator 65 may additionally display the temperature of the power element 22a and the temperature in the control unit 10 and / or the operation of the fan 28 in addition to other information.
  • the control unit 20 of the present embodiment does not include the clear button 53 illustrated in FIG. 7, and instead, the external display device 65 includes a clear button 66 as illustrated in FIG. 11.
  • the clear button 66 When the user presses the clear button 66, the display of the temperature of the power element 22a displayed on the external display 65 and the temperature in the control unit 10 and / or the operation of the fan 28 is deleted.
  • FIG. 12 is a view showing still another embodiment of the pump device.
  • the basic configuration of the control unit 20 of the present embodiment is the same as the configuration of the control unit 20 of the embodiment shown in FIG. 10, but the control unit 20 includes a control unit side antenna unit 67 instead of the communication unit 60. And an integrated circuit 68 connected to the control unit side antenna unit 67 is different.
  • the integrated circuit 68 is electrically connected to a storage unit 47 having a nonvolatile storage area 47a and a volatile storage area 47b.
  • the control part 20 of this embodiment is not provided with the indicator 49, you may provide the indicator 49 in the control part 20.
  • the external display 70 includes a display-side antenna unit 71 that transmits and receives radio waves, a data reader 74 that reads data received by the display-side antenna unit 71, and data read by the data reader 74 (for example, the power element 22a Display unit 72 for displaying temperature and temperature in control unit 10 and / or operation of fan 28, operation state of pump 2, discharge pressure, etc., data reader 74, display-side antenna unit 71, and display unit And a battery 73 for supplying power to 72.
  • the external display device 70 may be a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, or a tablet, or may be a dedicated terminal device such as a remote monitor.
  • a general-purpose terminal device such as a smartphone
  • the cost of producing a dedicated display device can be reduced, so that the cost of the pump device can be reduced.
  • a pump such as an apartment or building manager It is possible to provide a low-priced pump device that can easily inform the user who has no technical knowledge about the device that the temperature of the power element 22a and the temperature in the control unit 10 and / or that the fan 28 has been operated. it can.
  • the external display unit 70 is connected to the control unit 20 by a near field communication (NFC) technology. More specifically, when the display-side antenna unit 71 generates radio waves while the external display unit 70 is close to the control unit 20, the control-side antenna unit 67 receives the radio waves, and the control-unit-side antenna unit 67. Converts radio waves into electric power. This electric power is supplied to the integrated circuit 68 and the storage unit 47 to drive the integrated circuit 68 and the storage unit 47.
  • the integrated circuit 68 reads the data stored in the storage unit 47 and sends the data to the control unit side antenna unit 67.
  • the control unit side antenna unit 67 transmits radio waves together with data to the display unit side antenna unit 71.
  • the data reader 74 reads data received by the display-side antenna unit 71 and causes the display unit 72 to display the data.
  • the external display 70 includes a clear button 66 for erasing the display of the temperature of the power element 22a, the temperature in the control unit 10, and / or the operation of the fan 28.
  • a clear button 66 for erasing the display of the temperature of the power element 22a, the temperature in the control unit 10, and / or the operation of the fan 28.
  • the clear button 66 of this embodiment is a virtual button that appears on the screen of the display unit 72, but the clear button 66 may be a mechanical button provided outside the display unit 72.
  • the control unit 20 of the present embodiment does not include a clear button, the control unit 20 may be provided with a clear button. Note that operation restrictions may be provided for these operations.
  • a clear button 66 is provided on the external display 70 used mainly by the user
  • a reset button 52 is provided on the control unit 20 used mainly by maintenance personnel.
  • the reset button 52 only in the control unit 20
  • an external display 70 instead of a complicated method of canceling use restrictions such as passwords, it is possible to prevent the temperature of the power element 22a and the temperature in the control unit 10 and / or the operation of the fan 28 from being cleared by a user's erroneous operation. can do.
  • wireless communication is performed between the external display 70 and the control unit 20, and the temperature of the power element 22 a stored in the storage unit 47 and the temperature in the control unit 10, and / or the fan 28.
  • Data including operation and the like is sent from the control unit 20 to the external display device 70.
  • the control unit side antenna unit 67 generates power from the radio wave emitted from the external display device 70 and drives the integrated circuit 68 and the storage unit 47. Can do.
  • the external display 70 can detect the temperature of the power element 22a from the storage unit 47 of the control unit 20, the temperature in the control unit 10, and Data including the operation of the fan 28 can be acquired and displayed.
  • control unit 20 fails, it must be replaced with a new control unit 20.
  • the temperature of the power element 22a of the old control unit 20 the temperature in the control unit 10, and / or Data relating to the operation of the fan 28 can be passed on to the storage unit 47 of the new control unit 20.
  • the data in the storage unit 47 of the old control unit 20 is displayed on the external display 70, and the maintenance person inputs from the operation unit of the new control unit 20 while confirming the display.
  • the storage unit 47 may store the data, or the data of the old control unit 20 may be acquired by the external display unit 70 and communicated from the external display unit 70 to the storage unit 47 of the new control unit 20. May be written. Even if the control unit 20 fails in a state where the power is not turned on, the data stored in the non-volatile storage area 47a can be inherited to the storage unit 47 of the new control unit 20, so that the temperature of the power element 22a and the control unit 10 Temperature and / or operating data of the fan 28 is not lost. This means that the temperature of the power element 22a and the temperature in the control unit 10 and / or the operation history of the fan 28 can be displayed even after the pump device starts automatic operation in the new control unit 20. To do.
  • the user or the maintenance staff simply brings the external display 70 close to the control unit 20, the temperature of the power element 22 a from the storage unit 47 and the control unit 10. It is possible to obtain information including the temperature within and / or the operation of the fan 28.
  • NFC Near field communication
  • the user and maintenance personnel control the external display 70. It is necessary to approach the part 20. This means that when operating the external display 70, the user and maintenance personnel are near the pump device. Therefore, the user or the maintenance staff operates the external display unit 70 while visually observing the pump device, which leads to preventing an unexpected operation of the pump device due to an erroneous operation.
  • FIG. 13 is a view showing still another embodiment of the pump device.
  • the control unit 20 includes a communication unit 60.
  • the communication unit 60 is connected to the communication unit 76 of the external display 75 by wired communication or wireless communication.
  • the external display 75 includes a control unit 80, and the control unit 80 includes a communication unit 76, a storage unit 77, a calculation unit 78, and a display unit 79.
  • the control unit 20 may include a display device 49.
  • the storage unit 77 has the configuration shown in FIG.
  • FIG. 14 is a diagram showing still another embodiment of the pump device.
  • the control unit 20 is not provided with a display, and instead, the external display 75 is provided with a display unit 79 and a setting unit 82.
  • Other configurations are the same as those of the embodiment shown in FIG.
  • the temperature of the power element 22a, the temperature in the control unit 10, and / or the operating state of the fan 28 are displayed on the display unit 79, and other various setting values are input to the setting unit of the external display unit 75. 82.
  • the present invention can be used for a pump device.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Inverter Devices (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

The present invention relates to a pump device. This pump device comprises: a pump (2); an electric motor (3); a control unit (10) including a controller (20); a fan (28) that cools the control unit (10); a first temperature sensor (24) that measures the temperature inside the control unit (10); and a second temperature sensor (26) that measures the temperature of a power element (22a) of the inverter (22). The controller (20) activates the fan (28) when the temperature inside the control unit (10) is higher than a first threshold or when the temperature of the power element (22a) is higher than a second threshold, and deactivates the fan (28) when the temperature of the power element (22a) is lower than a third threshold or when the temperature inside the control unit (10) is lower than a fourth threshold.

Description

ポンプ装置Pump device
　本発明は、ポンプ装置に関するものである。 The present invention relates to a pump device.
　ポンプ装置は、一般に、ポンプと、該ポンプを運転する電動機と、該電動機を可変速駆動する駆動装置としてのインバータとを備えている。インバータのパワー素子は、電動機にかかる負荷に従って発熱する。具体的には、ポンプが大流量の水を汲み上げているとき、電動機にかかる負荷が大きくなり、パワー素子の温度が上昇する。一方、ポンプを停止すると、パワー素子の温度は低下する。そこで、インバータのパワー素子を効率よく冷却するために、ポンプ装置は、ポンプの起動に伴って回転し、ポンプの停止に伴って停止するファンを備えている。 The pump device generally includes a pump, an electric motor that operates the pump, and an inverter as a driving device that drives the electric motor at a variable speed. The power element of the inverter generates heat according to the load applied to the electric motor. Specifically, when the pump is pumping a large amount of water, the load applied to the electric motor increases, and the temperature of the power element rises. On the other hand, when the pump is stopped, the temperature of the power element decreases. Therefore, in order to efficiently cool the power element of the inverter, the pump device includes a fan that rotates as the pump starts and stops as the pump stops.
特許第４７５９４４５号公報Japanese Patent No. 4759445 特開２０１２－１７７３０４号公報JP 2012-177304 A
　インバータは、制御盤内に設置されるのが一般的である。この制御盤内の主な発熱部品はインバータのパワー素子である。ポンプが揚水する水の流量が少ない場合、電動機にかかる負荷は小さいため、パワー素子に流れる電流も少なく、パワー素子の発熱量は少ない。また、外気温が低く、パワー素子が自然冷却される場合もパワー素子を冷却する必要がない。 The inverter is generally installed in the control panel. The main heat generating components in the control panel are inverter power elements. When the flow rate of water pumped by the pump is small, the load applied to the electric motor is small, so that the current flowing through the power element is small and the heat generation amount of the power element is small. Further, even when the outside air temperature is low and the power element is naturally cooled, it is not necessary to cool the power element.
　しかしながら、ポンプの運転に連動させてファンの起動および停止を行うと、パワー素子を冷却する必要がないタイミングでもファンは起動するため、無駄なエネルギーを消費してしまう。また、ファンの寿命は比較的短いため、必要以上にファンを運転すると、予定よりも早期にファンが故障してしまう。ファンが故障すると、故障したファンを交換するために、ポンプ装置の運転を停止しなければならない。 However, if the fan is started and stopped in conjunction with the operation of the pump, the fan starts even when the power element does not need to be cooled, and thus wasteful energy is consumed. Moreover, since the life of the fan is relatively short, if the fan is operated more than necessary, the fan will fail earlier than planned. When a fan fails, the pump device must be shut down to replace the failed fan.
　制御盤は屋外に設置されることがある。このような環境下では、ポンプが停止中であっても、真夏の直射日光などにより、制御盤内の温度は非常に高くなる。このような状況のときにファンを回転させても、制御盤内の温度は下がりにくい。さらに、最悪の場合、パワー素子の温度トリップ機能、つまり、インバータの保護機能が作動し、ポンプ装置は揚水不能となる。 The control panel may be installed outdoors. Under such an environment, even when the pump is stopped, the temperature in the control panel becomes very high due to direct sunlight in midsummer. Even if the fan is rotated in such a situation, the temperature in the control panel is unlikely to decrease. Furthermore, in the worst case, the temperature trip function of the power element, that is, the protection function of the inverter is activated, and the pump device cannot pump water.
　本発明は、上述した問題点に鑑みてなされたものであり、省エネルギーを達成しつつ、安定的にポンプの運転を継続することができるポンプ装置を提供することを目的とする。 The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a pump device capable of stably continuing the operation of the pump while achieving energy saving.
　本発明の一態様は、ポンプと、前記ポンプを回転させる電動機と、前記電動機を変速可能とするインバータ、および該インバータの動作を制御する制御部を含む制御ユニットと、前記制御ユニットを冷却するファンと、前記制御ユニット内の温度を測定する第１の温度センサと、前記インバータのパワー素子の温度を測定する第２の温度センサとを備え、前記制御部は、前記制御ユニット内の温度が第１のしきい値よりも高いとき、または前記パワー素子の温度が第２のしきい値よりも高いときに、前記ファンを起動し、前記パワー素子の温度が第３のしきい値よりも低いとき、または前記制御ユニット内の温度が第４のしきい値よりも低いときに、前記ファンを停止することを特徴とするポンプ装置である。 One aspect of the present invention includes a pump, an electric motor that rotates the pump, an inverter that can shift the electric motor, a control unit that includes a control unit that controls the operation of the inverter, and a fan that cools the control unit. And a first temperature sensor for measuring the temperature in the control unit, and a second temperature sensor for measuring the temperature of the power element of the inverter. The fan is activated when the power element temperature is higher than a threshold value of 1 or when the temperature of the power element is higher than a second threshold value, and the temperature of the power element is lower than a third threshold value. Or when the temperature in the control unit is lower than a fourth threshold value, the fan is stopped.
　本発明の好ましい態様は、前記第１のしきい値、前記第２のしきい値、前記第３のしきい値、および前記第４のしきい値は、この順に大きいことを特徴とする。
　本発明の好ましい態様は、前記第１の温度センサは前記制御部に取り付けられており、前記第２の温度センサは前記パワー素子に取り付けられていることを特徴とする。
　本発明の好ましい態様は、前記パワー素子の温度並びに前記制御ユニット内の温度、および／または前記ファンが運転していることを表示する表示器をさらに備えていることを特徴とする。
　本発明の好ましい態様は、前記制御部は、外部表示器と有線通信または無線通信で接続することができることを特徴とする。 In a preferred aspect of the present invention, the first threshold value, the second threshold value, the third threshold value, and the fourth threshold value are larger in this order.
In a preferred aspect of the present invention, the first temperature sensor is attached to the control unit, and the second temperature sensor is attached to the power element.
A preferred embodiment of the present invention is characterized by further comprising a display for displaying the temperature of the power element and the temperature in the control unit, and / or that the fan is operating.
In a preferred aspect of the present invention, the control unit can be connected to an external display device by wired communication or wireless communication.
　本発明の好ましい態様は、前記制御部は、近距離無線通信（ＮＦＣ）によって前記外部表示器に接続できることを特徴とする。
　本発明の好ましい態様は、前記制御部は、前記外部表示器からの電波を受信して該電波を電力に変換する制御部側アンテナ部と、前記電力によって駆動される集積回路および記憶部とを備えることを特徴とする。
　本発明の好ましい態様は、前記制御部は、前記パワー素子の温度並びに前記制御ユニット内の温度、および／または前記ファンの運転を示すデータを前記記憶部に記憶し、前記集積回路は、前記記憶部から前記データを読み取り、前記制御部側アンテナ部は前記データを前記外部表示器に送信することを特徴とする。 In a preferred aspect of the present invention, the control unit can be connected to the external display device by near field communication (NFC).
In a preferred aspect of the present invention, the control unit includes a control unit side antenna unit that receives a radio wave from the external display and converts the radio wave into electric power, and an integrated circuit and a storage unit that are driven by the electric power. It is characterized by providing.
In a preferred aspect of the present invention, the control unit stores data indicating the temperature of the power element, the temperature in the control unit, and / or the operation of the fan in the storage unit. The control unit side antenna unit reads the data from a unit, and transmits the data to the external display.
　本発明によれば、制御ユニット内の温度、またはパワー素子の温度に基づいて、ファンが起動される。したがって、パワー素子の過熱に起因してポンプ装置が停止することを防止することができ、安定的にポンプの運転を継続することができる。さらに、パワー素子の長寿命化を図ることができる。
　さらに、本発明によれば、制御ユニット内の温度、またはパワー素子の温度に基づいて、ファンが停止される。したがって、必要以上にファンを運転することを防止することができるため、省エネルギーを達成することができ、かつファンの長寿命化を図ることができる。 According to the present invention, the fan is started based on the temperature in the control unit or the temperature of the power element. Therefore, it is possible to prevent the pump device from being stopped due to overheating of the power element, and the operation of the pump can be continued stably. Further, the life of the power element can be extended.
Furthermore, according to the present invention, the fan is stopped based on the temperature in the control unit or the temperature of the power element. Therefore, since it is possible to prevent the fan from being operated more than necessary, energy saving can be achieved and the life of the fan can be extended.
本発明の一実施形態に係るポンプ装置を示す模式図である。It is a schematic diagram which shows the pump apparatus which concerns on one Embodiment of this invention. 図１に示すポンプ装置の詳細を示す図である。It is a figure which shows the detail of the pump apparatus shown in FIG. 制御ユニット内の温度およびパワー素子の温度と時間との関係を示す図である。It is a figure which shows the relationship between the temperature in a control unit, the temperature of a power element, and time. 制御ユニット内の温度およびパワー素子の温度と時間との関係を示す図である。It is a figure which shows the relationship between the temperature in a control unit, the temperature of a power element, and time. 制御ユニット内の温度およびパワー素子の温度と時間との関係を示す図である。It is a figure which shows the relationship between the temperature in a control unit, the temperature of a power element, and time. 制御ユニット内の温度およびパワー素子の温度と時間との関係を示す図である。It is a figure which shows the relationship between the temperature in a control unit, the temperature of a power element, and time. 制御部のより詳細な構成を示す図である。It is a figure which shows the more detailed structure of a control part. 記憶部の詳細を示す図である。It is a figure which shows the detail of a memory | storage part. ポンプ装置の他の実施形態を示す図である。It is a figure which shows other embodiment of a pump apparatus. ポンプ装置のさらに他の実施形態を示す図である。It is a figure which shows other embodiment of a pump apparatus. ポンプ装置のさらに他の実施形態を示す図である。It is a figure which shows other embodiment of a pump apparatus. ポンプ装置のさらに他の実施形態を示す図である。It is a figure which shows other embodiment of a pump apparatus. ポンプ装置のさらに他の実施形態を示す図である。It is a figure which shows other embodiment of a pump apparatus. ポンプ装置のさらに他の実施形態を示す図である。It is a figure which shows other embodiment of a pump apparatus.
　以下、本発明の実施の形態について、図面を参照して説明する。以下に説明する実施形態は、水中ポンプユニットを備えたポンプ装置であるが、本発明は以下の実施形態に限定されない。例えば、本発明は陸上ポンプユニットを備えたポンプ装置にも適用することができる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiment described below is a pump device including a submersible pump unit, but the present invention is not limited to the following embodiment. For example, the present invention can also be applied to a pump device provided with a land pump unit.
　図１は本発明の一実施形態に係るポンプ装置を示す模式図である。図２は図１に示すポンプ装置の詳細を示す図である。図１および図２に示すように、ポンプ装置は、井戸内などの水中に設置することができる水中ポンプユニット１と、吸込管４を介して水中ポンプユニット１に接続された陸上ユニット５とを備えている。水中ポンプユニット１は、羽根車（図示しない）を有するポンプ２と、このポンプ２を回転させる電動機３とを備えている。電動機３が駆動されると、ポンプ２が回転し、水は吸込管４を通じて陸上ユニット５に送られる。 FIG. 1 is a schematic view showing a pump device according to an embodiment of the present invention. FIG. 2 is a diagram showing details of the pump device shown in FIG. As shown in FIGS. 1 and 2, the pump device includes a submersible pump unit 1 that can be installed in water such as in a well and a land unit 5 that is connected to the submersible pump unit 1 via a suction pipe 4. I have. The submersible pump unit 1 includes a pump 2 having an impeller (not shown) and an electric motor 3 that rotates the pump 2. When the electric motor 3 is driven, the pump 2 rotates and water is sent to the land unit 5 through the suction pipe 4.
　陸上ユニット５は地上に配置されている。陸上ユニット５は、水中ポンプユニット１の動作を制御する制御ユニット１０と、吸込管４に接続された配水管１１と、配水管１１を流れる水の流量が所定の値にまで低下したことを検知するフロースイッチ１２と、ポンプ２の吐出側圧力を測定する圧力センサ１３とを備えている。フロースイッチ１２および圧力センサ１３は配水管１１に接続されており、圧力センサ１３はフロースイッチ１２の下流側に設けられている。配水管１１の一端は吸込管４に接続され、他端は排出管１８に接続されている。排出管１８には水栓などの給水器具１９が接続されている。吸込管４には、逆止弁２１が取り付けられている。この逆止弁２１は、ポンプ２が停止したときの水の逆流を防止するために設けられている。 Land unit 5 is located on the ground. The land unit 5 detects that the control unit 10 that controls the operation of the submersible pump unit 1, the water pipe 11 connected to the suction pipe 4, and the flow rate of water flowing through the water pipe 11 has decreased to a predetermined value. And a pressure sensor 13 that measures the discharge side pressure of the pump 2. The flow switch 12 and the pressure sensor 13 are connected to the water distribution pipe 11, and the pressure sensor 13 is provided on the downstream side of the flow switch 12. One end of the water distribution pipe 11 is connected to the suction pipe 4, and the other end is connected to the discharge pipe 18. A water supply device 19 such as a water tap is connected to the discharge pipe 18. A check valve 21 is attached to the suction pipe 4. The check valve 21 is provided to prevent a back flow of water when the pump 2 is stopped.
　陸上ユニット５は、ポンプ２の吐出側圧力を保持するための圧力タンク１５をさらに備えている。圧力タンク１５は配水管１１に接続されており、圧力センサ１３の下流側に設けられている。圧力タンク１５は、その耐圧容器の内部にゴム製のブラダを有している。ポンプ２の吐出側圧力が上昇すると、ブラダの外側の空気は圧縮され、水が加圧状態で貯留される。配水管１１内の圧力が低下すると、ブラダに保持された水は圧縮された空気によって配水管１１内に押し出される。このようにして、ポンプ２が停止しても、しばらくの間、圧力タンク１５から配水管１１に水が供給される。 The land unit 5 further includes a pressure tank 15 for holding the discharge side pressure of the pump 2. The pressure tank 15 is connected to the water distribution pipe 11 and is provided on the downstream side of the pressure sensor 13. The pressure tank 15 has a rubber bladder inside the pressure vessel. When the discharge side pressure of the pump 2 increases, the air outside the bladder is compressed and water is stored in a pressurized state. When the pressure in the water distribution pipe 11 decreases, the water held in the bladder is pushed into the water distribution pipe 11 by the compressed air. In this way, even if the pump 2 is stopped, water is supplied from the pressure tank 15 to the water distribution pipe 11 for a while.
　制御ユニット１０は、電動機３を変速可能とするインバータ２２と、インバータ２２の動作を制御する制御部２０とを備えている。インバータ２２は制御部２０に接続されている。制御部２０は、インバータ２２を構成するパワー素子（例えば、ＩＧＢＴなどのスイッチング素子）２２ａのスイッチング動作を制御することで、電動機３の回転速度、すなわちポンプ２の回転速度を制御する。 The control unit 10 includes an inverter 22 that can change the speed of the electric motor 3 and a control unit 20 that controls the operation of the inverter 22. The inverter 22 is connected to the control unit 20. The control unit 20 controls the rotation speed of the electric motor 3, that is, the rotation speed of the pump 2 by controlling the switching operation of a power element (for example, a switching element such as IGBT) 22 a constituting the inverter 22.
　フロースイッチ１２および圧力センサ１３は信号線を介して制御部２０に接続されている。配水管１１を流れる水の流量が所定の値にまで低下したことをフロースイッチ１２が検出すると、制御部２０はポンプ２の回転速度を一時的に上げ、圧力タンク１５に蓄圧してからポンプ２の運転を停止させる。ポンプ２の吐出側圧力が所定の始動圧力まで低下したことを圧力センサ１３が検出すると、制御部２０はポンプ２を始動させる。 The flow switch 12 and the pressure sensor 13 are connected to the control unit 20 via a signal line. When the flow switch 12 detects that the flow rate of the water flowing through the water distribution pipe 11 has decreased to a predetermined value, the control unit 20 temporarily increases the rotational speed of the pump 2 and stores the pressure in the pressure tank 15 before pump 2. Stop operation. When the pressure sensor 13 detects that the discharge side pressure of the pump 2 has decreased to a predetermined starting pressure, the control unit 20 starts the pump 2.
　ポンプ装置は、制御ユニット１０を冷却するファン２８をさらに備えている。ファン２８は制御ユニット１０の近傍に配置されている。ファン２８が回転すると、空気がファン２８から吐出され、制御ユニット１０に接触する。この空気の流れは、制御ユニット１０、特に発熱源であるパワー素子２２ａを冷却する。 The pump device further includes a fan 28 for cooling the control unit 10. The fan 28 is disposed in the vicinity of the control unit 10. When the fan 28 rotates, air is discharged from the fan 28 and contacts the control unit 10. This air flow cools the control unit 10, particularly the power element 22a, which is a heat source.
　図２に示すように、ポンプ装置は、制御ユニット１０内の温度を測定する第１の温度センサ２４と、インバータ２２のパワー素子２２ａの温度を測定する第２の温度センサ２６とを備えている。第１の温度センサ２４は制御部２０に取り付けられており、第２の温度センサ２６はパワー素子２２ａに取り付けられている。ただし、第１の温度センサ２４は制御ユニット１０内の温度を測定できればよいので、必ずしも制御部２０に取り付けられる必要はない。例えば、第１の温度センサ２４は、制御部２０およびインバータ２２を覆う保護カバー（図示しない）に取り付けられてもよい。 As shown in FIG. 2, the pump device includes a first temperature sensor 24 that measures the temperature in the control unit 10, and a second temperature sensor 26 that measures the temperature of the power element 22 a of the inverter 22. . The first temperature sensor 24 is attached to the control unit 20, and the second temperature sensor 26 is attached to the power element 22a. However, the first temperature sensor 24 only needs to be able to measure the temperature in the control unit 10, and thus is not necessarily attached to the control unit 20. For example, the first temperature sensor 24 may be attached to a protective cover (not shown) that covers the control unit 20 and the inverter 22.
　第１の温度センサ２４および第２の温度センサ２６は信号線を介して制御部２０に接続されている。制御ユニット１０内の温度の測定値は、第１の温度センサ２４から制御部２０に送られる。同様に、パワー素子２２ａの温度の測定値は、第２の温度センサ２６から制御部２０に送られる。 The first temperature sensor 24 and the second temperature sensor 26 are connected to the control unit 20 via signal lines. The measured value of the temperature in the control unit 10 is sent from the first temperature sensor 24 to the control unit 20. Similarly, the measured value of the temperature of the power element 22 a is sent from the second temperature sensor 26 to the control unit 20.
　制御部２０は、制御ユニット１０内の温度およびパワー素子２２ａの温度に関する複数のしきい値を予め記憶している。図３乃至図６は制御ユニット１０内の温度およびパワー素子２２ａの温度と時間との関係を示す図である。図３乃至図６において、縦軸は温度［℃］を示しており、横軸は時間を示している。 The control unit 20 stores in advance a plurality of threshold values relating to the temperature in the control unit 10 and the temperature of the power element 22a. 3 to 6 are diagrams showing the relationship between the temperature in the control unit 10 and the temperature of the power element 22a and time. 3 to 6, the vertical axis indicates the temperature [° C.], and the horizontal axis indicates time.
　図３乃至図６に示す例では、第１のしきい値～第４のしきい値および上限値が示されている。第１のしきい値および第２のしきい値はファン２８を起動させるためのしきい値である。第３のしきい値および第４のしきい値はファン２８を停止させるためのしきい値である。上限値はポンプ２を非常停止させたり、警報を発したりするためのしきい値である。第１のしきい値、第２のしきい値、第３のしきい値、および第４のしきい値は、この順に大きく、上限値は第１のしきい値よりも大きい。 In the example shown in FIGS. 3 to 6, the first threshold value to the fourth threshold value and the upper limit value are shown. The first threshold value and the second threshold value are threshold values for starting the fan 28. The third threshold value and the fourth threshold value are threshold values for stopping the fan 28. The upper limit value is a threshold value for stopping the pump 2 in an emergency or issuing an alarm. The first threshold value, the second threshold value, the third threshold value, and the fourth threshold value are larger in this order, and the upper limit value is larger than the first threshold value.
　第１のしきい値および第４のしきい値は制御ユニット１０内の温度に関するしきい値であり、第２のしきい値および第３のしきい値はパワー素子２２ａの温度に関するしきい値である。制御部２０は、第１の温度センサ２４から送られてくる制御ユニット１０内の温度の測定値と、第１のしきい値および第４のしきい値とを比較する。同様に、制御部２０は、第２の温度センサ２６から送られてくるパワー素子２２ａの温度の測定値と、第２のしきい値および第３のしきい値とを比較する。 The first threshold value and the fourth threshold value are threshold values related to the temperature in the control unit 10, and the second threshold value and the third threshold value are threshold values related to the temperature of the power element 22a. It is. The control unit 20 compares the measured value of the temperature in the control unit 10 sent from the first temperature sensor 24 with the first threshold value and the fourth threshold value. Similarly, the control unit 20 compares the measured value of the temperature of the power element 22a sent from the second temperature sensor 26 with the second threshold value and the third threshold value.
　制御部２０は、制御ユニット１０内の温度が第１のしきい値よりも高いとき、または、パワー素子２２ａの温度が第２のしきい値よりも高いときに、ファン２８を起動するように構成されている。さらに、制御部２０は、パワー素子２２ａの温度が第３のしきい値よりも低いとき、または制御ユニット１０内の温度が第４のしきい値よりも低いときに、ファン２８を停止させるように構成されている。 The control unit 20 starts the fan 28 when the temperature in the control unit 10 is higher than the first threshold value or when the temperature of the power element 22a is higher than the second threshold value. It is configured. Further, the control unit 20 stops the fan 28 when the temperature of the power element 22a is lower than the third threshold value or when the temperature in the control unit 10 is lower than the fourth threshold value. It is configured.
　図３に示すように、制御ユニット１０内の温度が第１のしきい値よりも低く、かつパワー素子２２ａの温度が第２のしきい値よりも低いときは、制御ユニット１０を冷却する必要がないので、ファン２８は起動されない。 As shown in FIG. 3, when the temperature in the control unit 10 is lower than the first threshold value and the temperature of the power element 22a is lower than the second threshold value, the control unit 10 needs to be cooled. Therefore, the fan 28 is not started.
　ポンプ２が運転するにつれて、インバータ２２のパワー素子２２ａが発熱し、パワー素子２２ａの温度が上昇する。図４に示すように、制御ユニット１０内の温度が第１のしきい値よりも低い場合でも、パワー素子２２ａの温度が第２のしきい値よりも高いときは、制御部２０はファン２８を起動する。ファン２８が回転し始めると、制御ユニット１０、特にインバータ２２のパワー素子２２ａが冷却される。制御ユニット１０が冷却された結果、パワー素子２２ａの温度が第３のしきい値よりも低くなった場合、または制御ユニット１０内の温度が第４のしきい値よりも低くなった場合には、制御部２０はファン２８を停止する。 As the pump 2 is operated, the power element 22a of the inverter 22 generates heat, and the temperature of the power element 22a rises. As shown in FIG. 4, even when the temperature in the control unit 10 is lower than the first threshold value, the control unit 20 can control the fan 28 when the temperature of the power element 22 a is higher than the second threshold value. Start up. When the fan 28 starts to rotate, the control unit 10, in particular, the power element 22a of the inverter 22 is cooled. When the temperature of the power element 22a becomes lower than the third threshold value as a result of the cooling of the control unit 10, or when the temperature in the control unit 10 becomes lower than the fourth threshold value. The control unit 20 stops the fan 28.
　ポンプ２の停止中は、パワー素子２２ａの温度は通常は低い状態にある。しかしながら、真夏の直射日光などにより、ポンプ２が停止中にもかかわらず。制御ユニット１０内の温度が上昇することがある。図５に示すように、パワー素子２２ａの温度が第２のしきい値よりも低いときでも、制御ユニット１０内の温度が第１のしきい値よりも高くなると、制御部２０はファン２８を起動する。 When the pump 2 is stopped, the temperature of the power element 22a is normally low. However, even though the pump 2 is stopped due to direct sunlight in midsummer. The temperature in the control unit 10 may rise. As shown in FIG. 5, even when the temperature of the power element 22a is lower than the second threshold value, if the temperature in the control unit 10 becomes higher than the first threshold value, the control unit 20 turns off the fan 28. to start.
　このように、ポンプ２の停止中であっても、制御ユニット１０内の温度に基づいてファン２８を起動させることにより、制御ユニット１０内の温度上昇を防止することができる。したがって、その後、ポンプ２を運転してもパワー素子２２ａの温度トリップ機能、つまり、インバータ２２の保護機能の作動を回避することができる。制御ユニット１０が冷却された結果、パワー素子２２ａの温度が第３のしきい値よりも低くなった場合、または制御ユニット１０内の温度が第４のしきい値よりも低くなった場合には、制御部２０はファン２８を停止する。 As described above, even when the pump 2 is stopped, the temperature in the control unit 10 can be prevented from being increased by starting the fan 28 based on the temperature in the control unit 10. Therefore, even if the pump 2 is operated thereafter, the operation of the temperature trip function of the power element 22a, that is, the protection function of the inverter 22 can be avoided. When the temperature of the power element 22a becomes lower than the third threshold value as a result of the cooling of the control unit 10, or when the temperature in the control unit 10 becomes lower than the fourth threshold value. The control unit 20 stops the fan 28.
　制御部２０は、ポンプ２の運転中において、制御ユニット１０内の温度またはパワー素子２２ａの温度が上限値よりも高くなったときは、ポンプ２を非常停止するように構成されている。図６に示すように、例えば、ポンプ２の運転中において、パワー素子２２ａの温度が上限値よりも高くなったとき、制御部２０はポンプ２を非常停止する。ポンプ２の運転中において、制御ユニット１０内の温度が上限値よりも高くなっても、制御部２０はポンプ２を非常停止する。このとき、制御部２０は警報を発することが望ましい。 The controller 20 is configured to emergency stop the pump 2 when the temperature in the control unit 10 or the temperature of the power element 22a becomes higher than the upper limit value during operation of the pump 2. As shown in FIG. 6, for example, when the temperature of the power element 22 a becomes higher than the upper limit value during operation of the pump 2, the control unit 20 performs an emergency stop of the pump 2. During the operation of the pump 2, even when the temperature in the control unit 10 becomes higher than the upper limit value, the control unit 20 performs an emergency stop of the pump 2. At this time, it is desirable for the control unit 20 to issue an alarm.
　ポンプ装置は第１の温度センサ２４および第２の温度センサ２６を備えているので、これら２つの温度センサ２４，２６のうちの一方が故障した場合でも、制御部２０は、他方の温度センサによって測定された温度に基づいて、ファン２８の起動および停止を行うことができる。 Since the pump device includes the first temperature sensor 24 and the second temperature sensor 26, even when one of the two temperature sensors 24, 26 fails, the control unit 20 uses the other temperature sensor. The fan 28 can be started and stopped based on the measured temperature.
　制御部２０は、ポンプ２の起動および停止に関係なく、制御ユニット１０内の温度またはパワー素子２２ａの温度に基づいて、ファン２８の起動および停止を行う。本実施形態によれば、ポンプ２の停止中において、直射日光等によって制御ユニット１０内の温度が上昇した場合でも、ファン２８によって制御ユニット１０を冷却することができる。さらに、パワー素子２２ａを含むインバータ２２の温度上昇を抑えることができるので、パワー素子２２ａの長寿命化を図ることができる。 The control unit 20 starts and stops the fan 28 based on the temperature in the control unit 10 or the temperature of the power element 22a regardless of the start and stop of the pump 2. According to the present embodiment, the control unit 10 can be cooled by the fan 28 even when the temperature in the control unit 10 rises due to direct sunlight or the like while the pump 2 is stopped. Furthermore, since the temperature rise of the inverter 22 including the power element 22a can be suppressed, the life of the power element 22a can be extended.
　さらに、本実施形態によれば、制御部２０は、制御ユニット１０内の温度が第４のしきい値よりも低いとき、またはパワー素子２２ａの温度が第３のしきい値よりも低いときに、ファン２８を停止するので、必要以上にファン２８が運転することを防止して、省エネルギーを達成することができる。さらには、比較的寿命が短いとされるファン２８の長寿命化を図ることができる。ファン２８の長寿命化により、ファン２８の故障によるポンプ２の停止の回数を低減することができる。 Further, according to the present embodiment, the control unit 20 is configured such that when the temperature in the control unit 10 is lower than the fourth threshold value, or when the temperature of the power element 22a is lower than the third threshold value. Since the fan 28 is stopped, it is possible to prevent the fan 28 from operating more than necessary and achieve energy saving. Furthermore, it is possible to extend the life of the fan 28 whose life is relatively short. By extending the life of the fan 28, the number of times the pump 2 is stopped due to the failure of the fan 28 can be reduced.
　次に、上述したポンプ装置のより詳細な構成について図７を参照して説明する。図７に示すように、ポンプ装置は、パワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転を含む運転情報を表示する表示器４９をさらに備えている。制御部２０は、設定部４６、記憶部４７、演算部４８、Ｉ／Ｏ部５０、および運転パネル５１を備えている。運転パネル５１は、ヒューマンインターフェースとして機能する。設定部４６には、ポンプ２の運転制御に関する各種設定値が入力される。設定部４６および表示器４９は、運転パネル５１に設けられている。表示器４９は液晶パネルであり、設定部４６はタッチパネル式操作器でもよい。本実施形態では、表示器４９は制御部２０に取り付けられているが、表示器４９は制御部２０から離れて配置されてもよい。また、表示器４９は液晶パネルと７セグメントＬＥＤや表示灯を組み合わせた構成でもよい。 Next, a more detailed configuration of the above-described pump device will be described with reference to FIG. As shown in FIG. 7, the pump device further includes a display 49 that displays operation information including the temperature of the power element 22 a and the temperature in the control unit 10 and / or the operation of the fan 28. The control unit 20 includes a setting unit 46, a storage unit 47, a calculation unit 48, an I / O unit 50, and an operation panel 51. The operation panel 51 functions as a human interface. Various setting values relating to operation control of the pump 2 are input to the setting unit 46. The setting unit 46 and the display device 49 are provided on the operation panel 51. The display device 49 may be a liquid crystal panel, and the setting unit 46 may be a touch panel type operation device. In the present embodiment, the display device 49 is attached to the control unit 20, but the display device 49 may be arranged away from the control unit 20. Further, the display unit 49 may have a configuration in which a liquid crystal panel and a 7-segment LED or an indicator lamp are combined.
　記憶部４７は、上述したしきい値（すなわち、第１のしきい値～第４のしきい値、および上限値）を記憶する。しきい値は、記憶部４７に予め記憶されてもよいし、あるいは設定部４６を通じて記憶部４７に入力されてもよい。演算部４８は、第１の温度センサ２４および第２の温度センサ２６から送られてくる温度を監視し、測定された温度と第１のしきい値～第４のしきい値および上限値とを比較する。演算部４８としては、ＣＰＵが使用される。表示器４９は、ヒューマンインターフェースとして機能し、パワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転を含む運転情報を表示する。ユーザーは、設定部４６上のクリアボタン５３を押すことにより、表示器４９での表示を消去することができる。 The storage unit 47 stores the above-described threshold values (that is, the first threshold value to the fourth threshold value and the upper limit value). The threshold value may be stored in advance in the storage unit 47 or may be input to the storage unit 47 through the setting unit 46. The calculation unit 48 monitors the temperatures sent from the first temperature sensor 24 and the second temperature sensor 26, and determines the measured temperature, the first threshold value to the fourth threshold value, and the upper limit value. Compare A CPU is used as the calculation unit 48. The indicator 49 functions as a human interface, and displays operation information including the temperature of the power element 22 a and the temperature in the control unit 10, and / or the operation of the fan 28. The user can erase the display on the display unit 49 by pressing the clear button 53 on the setting unit 46.
　図８は記憶部４７の詳細を示す図である。図８に示すように、記憶部４７は、不揮発性メモリから構成された不揮発性記憶領域４７ａと、揮発性メモリから構成された揮発性記憶領域４７ｂを備えている。不揮発性記憶領域４７ａは、パワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転の履歴、ポンプ２の運転に必要な各種設定値、故障履歴、運転履歴などを記憶する領域である。揮発性記憶領域４７ｂは、パワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転、圧力信号、ポンプ回転数、電流値、故障、警報などを記憶する領域である。 FIG. 8 is a diagram showing details of the storage unit 47. As illustrated in FIG. 8, the storage unit 47 includes a nonvolatile storage area 47 a configured from a nonvolatile memory and a volatile storage area 47 b configured from a volatile memory. The nonvolatile storage area 47a stores the temperature of the power element 22a and the temperature in the control unit 10, and / or the operation history of the fan 28, various set values necessary for the operation of the pump 2, the failure history, the operation history, and the like. It is an area. The volatile storage area 47b is an area for storing the temperature of the power element 22a and the temperature in the control unit 10, and / or the operation of the fan 28, the pressure signal, the pump speed, the current value, the failure, the alarm, and the like.
　図９はポンプ装置の他の実施形態を示す図である。本実施形態では、表示器４９に加えて、外部表示器６１がさらに設けられている。図９に示すように、制御部２０は通信部６０をさらに備えている。制御部２０は有線通信または無線通信によって外部表示器６１に接続されている。外部表示器６１として、例えばスマートフォンや携帯電話、パソコン、タブレットの汎用端末機器または遠隔監視器などの専用端末機器が採用される。本実施形態では、表示器４９は７セグメントＬＥＤや表示灯などの簡易な表示器であり、外部表示器６１は液晶画面と液晶画面のタッチ入力方式や押圧ボタン方式用いた高機能表示器である。簡易な表示器４９に比べて外部表示器６１は表示できる情報量が格段に多いため、外部表示器６１にパワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８が運転していることを表示することによって、ポンプ装置に不慣れなユーザーは誤解することなく、パワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８が運転していることを認識することが出来る。 FIG. 9 is a view showing another embodiment of the pump device. In the present embodiment, in addition to the display device 49, an external display device 61 is further provided. As shown in FIG. 9, the control unit 20 further includes a communication unit 60. The control unit 20 is connected to the external display 61 by wired communication or wireless communication. As the external display 61, for example, a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, a tablet, or a dedicated terminal device such as a remote monitor is adopted. In this embodiment, the display unit 49 is a simple display unit such as a 7-segment LED or an indicator lamp, and the external display unit 61 is a high-function display unit using a liquid crystal screen and a touch input method or a push button method for the liquid crystal screen. . Since the external display 61 has a much larger amount of information that can be displayed than the simple display 49, the temperature of the power element 22a and the temperature in the control unit 10 and / or the fan 28 is operated on the external display 61. By indicating that the user is not familiar with the pump device, the temperature of the power element 22a and the temperature in the control unit 10 and / or that the fan 28 is operating can be recognized without misunderstanding. .
　ポンプ装置は機械室やポンプ室などの電気的なノイズの多い環境に設置されることがある。本実施形態によれば、ポンプ装置に組み込まれる表示器４９として、液晶表示やタッチパネルよりも電気的ノイズに強い７セグメントＬＥＤや表示灯、機械的な押圧ボタンなどにて構成された表示器を使用することにより、外部環境から発生される電気的なノイズにより外部表示器６１の液晶表示やタッチパネル操作に異常が発生した場合でも、表示器４９によりポンプ装置の運転に必要な最低限度の表示や操作を行うことが可能なため、ポンプ装置を電気的ノイズの多い環境下にも設置することができる。さらに、外部表示器６１として、スマートフォン、携帯電話、パソコン、タブレットなどの汎用端末機器を使用すると、ユーザーは専用のアプリケーションソフトウエアを用いて、パワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８が運転していることを表示させることができるため、専用のアプリケーションソフトウエアを複数用意し使い分けることによりユーザーのレベルに沿ったパワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８が運転していることの表示を提供することが可能である。 The pump device may be installed in an electrically noisy environment such as a machine room or pump room. According to the present embodiment, as the display unit 49 incorporated in the pump device, a display unit composed of a 7-segment LED, an indicator lamp, a mechanical push button, etc., which is more resistant to electrical noise than a liquid crystal display or a touch panel is used. Thus, even if an abnormality occurs in the liquid crystal display or touch panel operation of the external display 61 due to electrical noise generated from the external environment, the minimum display or operation necessary for the operation of the pump device is performed by the display 49. Therefore, the pump device can be installed in an environment with a lot of electrical noise. Furthermore, when a general-purpose terminal device such as a smart phone, a mobile phone, a personal computer, or a tablet is used as the external display 61, the user uses the dedicated application software to set the temperature of the power element 22a and the temperature in the control unit 10, and Since it is possible to display that the fan 28 is operating, a plurality of dedicated application software is prepared and used properly, so that the temperature of the power element 22a and the temperature in the control unit 10 according to the user's level, and An indication that the fan 28 is operating may be provided.
　図１０はポンプ装置のさらに他の実施形態を示す図である。本実施形態では、制御部２０に表示器４９は設けられていなく、代わりに外部表示器（高機能表示器）６１のみが設けられる。その他の構成は、図９に示す実施形態と同様である。図１０に示す実施形態によれば、ポンプ装置には表示器自体を設ける必要がなくなるので、ポンプ装置全体のコストを更に下げることが可能である。 FIG. 10 is a view showing still another embodiment of the pump device. In the present embodiment, the display unit 49 is not provided in the control unit 20, and only the external display unit (high function display unit) 61 is provided instead. Other configurations are the same as those of the embodiment shown in FIG. According to the embodiment shown in FIG. 10, since it is not necessary to provide the display device itself in the pump device, the cost of the entire pump device can be further reduced.
　図１１はポンプ装置のさらに他の実施形態を示す図である。図１１において、表示器４９は７セグメントＬＥＤや表示灯などの簡易な表示器である。通信部６０は公衆回線を介して保守管理会社または管理人室に設けられた外部表示器６５に接続されている。制御部２０は、パワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８が運転していることを判断し、外部表示器６５は制御部２０に公衆回線を通じて定期的に通信し、パワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８が運転しているか否かを制御部２０に問い合わせる。そして、外部表示器６５はパワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転を表示する。外部表示器６５はパワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転を他の情報に追加的に表示してもよい。 FIG. 11 is a view showing still another embodiment of the pump device. In FIG. 11, the indicator 49 is a simple indicator such as a 7-segment LED or indicator lamp. The communication unit 60 is connected to an external display 65 provided in a maintenance management company or an administrator room via a public line. The control unit 20 determines the temperature of the power element 22a and the temperature in the control unit 10, and / or that the fan 28 is in operation, and the external display 65 periodically communicates with the control unit 20 through a public line. The controller 20 is inquired of the temperature of the power element 22a and the temperature in the control unit 10 and / or whether the fan 28 is operating. Then, the external display 65 displays the temperature of the power element 22a and the temperature in the control unit 10 and / or the operation of the fan 28. The external indicator 65 may additionally display the temperature of the power element 22a and the temperature in the control unit 10 and / or the operation of the fan 28 in addition to other information.
　本実施形態の制御部２０は、図７に示すクリアボタン５３を備えていなく、代わりに、外部表示器６５は、図１１に示すように、クリアボタン６６を備えている。ユーザーがこのクリアボタン６６を押すと、外部表示器６５上に表示されているパワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転の表示が消去される。 The control unit 20 of the present embodiment does not include the clear button 53 illustrated in FIG. 7, and instead, the external display device 65 includes a clear button 66 as illustrated in FIG. 11. When the user presses the clear button 66, the display of the temperature of the power element 22a displayed on the external display 65 and the temperature in the control unit 10 and / or the operation of the fan 28 is deleted.
　図１２はポンプ装置のさらに他の実施形態を示す図である。本実施形態の制御部２０の基本的構成は図１０に示す実施形態の制御部２０の構成と同じであるが、制御部２０が通信部６０に代えて、制御部側アンテナ部６７を備えている点、および制御部側アンテナ部６７に接続された集積回路６８を備えている点で異なっている。集積回路６８は、不揮発性記憶領域４７ａ、揮発性記憶領域４７ｂを有する記憶部４７に電気的に接続されている。なお、本実施形態の制御部２０は表示器４９を備えていないが、制御部２０に表示器４９を設けてもよい。 FIG. 12 is a view showing still another embodiment of the pump device. The basic configuration of the control unit 20 of the present embodiment is the same as the configuration of the control unit 20 of the embodiment shown in FIG. 10, but the control unit 20 includes a control unit side antenna unit 67 instead of the communication unit 60. And an integrated circuit 68 connected to the control unit side antenna unit 67 is different. The integrated circuit 68 is electrically connected to a storage unit 47 having a nonvolatile storage area 47a and a volatile storage area 47b. In addition, although the control part 20 of this embodiment is not provided with the indicator 49, you may provide the indicator 49 in the control part 20. FIG.
　外部表示器７０は、電波を送受信する表示器側アンテナ部７１と、表示器側アンテナ部７１で受信したデータを読み取るデータリーダー７４と、データリーダー７４によって読み取られたデータ（例えば、パワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転、ポンプ２の運転状態、吐出し圧力など）を表示する表示部７２と、データリーダー７４、表示器側アンテナ部７１、および表示部７２に電力を供給するバッテリー７３とを備えている。外部表示器７０として、例えばスマートフォンや携帯電話、パソコン、タブレット等の汎用端末機器でもよく、遠隔監視器などの専用の端末機器でもよい。特に、スマートフォンなどの汎用端末機器を外部表示器として使用すれば、専用の表示器を制作するコストが削減できるので、ポンプ装置のコストを下げることができる。また、複数のユーザーが個々の汎用端末機器にパワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転を表示させることができるので、マンションやビルの管理人のようなポンプ装置に関する専門知識のないユーザーに対しても、パワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８が運転したことを分かり易く知らせることができるポンプ装置を安価に提供することができる。 The external display 70 includes a display-side antenna unit 71 that transmits and receives radio waves, a data reader 74 that reads data received by the display-side antenna unit 71, and data read by the data reader 74 (for example, the power element 22a Display unit 72 for displaying temperature and temperature in control unit 10 and / or operation of fan 28, operation state of pump 2, discharge pressure, etc., data reader 74, display-side antenna unit 71, and display unit And a battery 73 for supplying power to 72. The external display device 70 may be a general-purpose terminal device such as a smartphone, a mobile phone, a personal computer, or a tablet, or may be a dedicated terminal device such as a remote monitor. In particular, if a general-purpose terminal device such as a smartphone is used as an external display device, the cost of producing a dedicated display device can be reduced, so that the cost of the pump device can be reduced. In addition, since a plurality of users can display the temperature of the power element 22a and the temperature in the control unit 10 and / or the operation of the fan 28 on each general-purpose terminal device, a pump such as an apartment or building manager It is possible to provide a low-priced pump device that can easily inform the user who has no technical knowledge about the device that the temperature of the power element 22a and the temperature in the control unit 10 and / or that the fan 28 has been operated. it can.
　外部表示器７０は、近距離無線通信（ＮＦＣ：Near　Field　Communication）の技術によって制御部２０と接続される。より具体的には、外部表示器７０を制御部２０に近づけた状態で、表示器側アンテナ部７１が電波を発生すると、その電波を制御部側アンテナ部６７が受け取り、制御部側アンテナ部６７は電波を電力に変換する。この電力は集積回路６８および記憶部４７に供給されてこれら集積回路６８および記憶部４７を駆動する。集積回路６８は記憶部４７に記憶されている上記データを読み取り、制御部側アンテナ部６７にデータを送る。制御部側アンテナ部６７は、データとともに電波を表示器側アンテナ部７１に送信する。データリーダー７４は、表示器側アンテナ部７１が受信したデータを読み取り、そのデータを表示部７２に表示させる。 The external display unit 70 is connected to the control unit 20 by a near field communication (NFC) technology. More specifically, when the display-side antenna unit 71 generates radio waves while the external display unit 70 is close to the control unit 20, the control-side antenna unit 67 receives the radio waves, and the control-unit-side antenna unit 67. Converts radio waves into electric power. This electric power is supplied to the integrated circuit 68 and the storage unit 47 to drive the integrated circuit 68 and the storage unit 47. The integrated circuit 68 reads the data stored in the storage unit 47 and sends the data to the control unit side antenna unit 67. The control unit side antenna unit 67 transmits radio waves together with data to the display unit side antenna unit 71. The data reader 74 reads data received by the display-side antenna unit 71 and causes the display unit 72 to display the data.
　外部表示器７０は、パワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転の表示を消去するためのクリアボタン６６を備えている。ユーザーがこのクリアボタン６６を押すと、表示部７２に表示されているパワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転の表示が消去される。本実施形態のクリアボタン６６は、表示部７２の画面上に現れる仮想的なボタンであるが、クリアボタン６６は表示部７２の外に設けられた機械的なボタンであってもよい。本実施形態の制御部２０はクリアボタンを備えていないが、制御部２０にクリアボタンを設けてもよい。なお、これらの操作には、操作制限を設けてもよい。具体的には、ユーザーが主に使用する外部表示器７０にクリアボタン６６を設け、メンテナンス員が主に使用する制御部２０にリセットボタン５２を設ける。このように制御部２０にのみリセットボタン５２を設けることで、ユーザーのリセットボタン５２の誤操作を防ぐことができる。パスワード等の複雑な使用制限の解除方法ではなく、外部表示器７０を設けることで、ユーザーの誤操作によるパワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転のクリアを防止することができる。 The external display 70 includes a clear button 66 for erasing the display of the temperature of the power element 22a, the temperature in the control unit 10, and / or the operation of the fan 28. When the user presses the clear button 66, the display of the temperature of the power element 22a and the temperature in the control unit 10 and / or the operation of the fan 28 displayed on the display unit 72 is erased. The clear button 66 of this embodiment is a virtual button that appears on the screen of the display unit 72, but the clear button 66 may be a mechanical button provided outside the display unit 72. Although the control unit 20 of the present embodiment does not include a clear button, the control unit 20 may be provided with a clear button. Note that operation restrictions may be provided for these operations. Specifically, a clear button 66 is provided on the external display 70 used mainly by the user, and a reset button 52 is provided on the control unit 20 used mainly by maintenance personnel. Thus, by providing the reset button 52 only in the control unit 20, it is possible to prevent an erroneous operation of the reset button 52 by the user. By providing an external display 70 instead of a complicated method of canceling use restrictions such as passwords, it is possible to prevent the temperature of the power element 22a and the temperature in the control unit 10 and / or the operation of the fan 28 from being cleared by a user's erroneous operation. can do.
　本実施形態では、外部表示器７０と制御部２０との間で無線通信が行われ、記憶部４７に記憶されているパワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転などを含むデータは、制御部２０から外部表示器７０に送られる。本実施形態によれば、ポンプ装置の電源が入っていない場合でも、制御部側アンテナ部６７は外部表示器７０から発せられる電波から電力を発生し、集積回路６８および記憶部４７を駆動することができる。したがって、ポンプ装置のメンテンナンス中などにおいて制御部２０に電力が供給されていないときでも、外部表示器７０は、制御部２０の記憶部４７からパワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転を含むデータを取得し、該データを表示することができる。 In the present embodiment, wireless communication is performed between the external display 70 and the control unit 20, and the temperature of the power element 22 a stored in the storage unit 47 and the temperature in the control unit 10, and / or the fan 28. Data including operation and the like is sent from the control unit 20 to the external display device 70. According to the present embodiment, even when the power of the pump device is not turned on, the control unit side antenna unit 67 generates power from the radio wave emitted from the external display device 70 and drives the integrated circuit 68 and the storage unit 47. Can do. Therefore, even when power is not supplied to the control unit 20 during maintenance of the pump device or the like, the external display 70 can detect the temperature of the power element 22a from the storage unit 47 of the control unit 20, the temperature in the control unit 10, and Data including the operation of the fan 28 can be acquired and displayed.
　制御部２０が故障した場合には新制御部２０に交換する必要がある。この制御部２０の交換時に、故障した旧制御部２０はすでに電源が入らない状態においても、本実施形態では、旧制御部２０のパワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転に関するデータを新制御部２０の記憶部４７に継承することが可能となる。具体的には、旧制御部２０の記憶部４７の該データを外部表示器７０にて表示し、その表示を確認しながらメンテナンス員が新制御部２０の操作部より入力し、新制御部２０の記憶部４７に該データを記憶させてもよいし、旧制御部２０の該データを外部表示器７０にて取得し、外部表示器７０から新しい制御部２０の記憶部４７へと通信手段にて書き込んでもよい。制御部２０が電源が入らない状態で故障しても、不揮発性記憶領域４７ａに記憶されているデータを新制御部２０の記憶部４７に継承できるので、パワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転のデータが損失されることない。これは、ポンプ装置が新制御部２０にて自動運転を開始した後でも、パワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転の履歴を表示することができることを意味する。 If the control unit 20 fails, it must be replaced with a new control unit 20. At the time of replacement of the control unit 20, even if the failed old control unit 20 has not been turned on, in the present embodiment, the temperature of the power element 22a of the old control unit 20, the temperature in the control unit 10, and / or Data relating to the operation of the fan 28 can be passed on to the storage unit 47 of the new control unit 20. Specifically, the data in the storage unit 47 of the old control unit 20 is displayed on the external display 70, and the maintenance person inputs from the operation unit of the new control unit 20 while confirming the display. The storage unit 47 may store the data, or the data of the old control unit 20 may be acquired by the external display unit 70 and communicated from the external display unit 70 to the storage unit 47 of the new control unit 20. May be written. Even if the control unit 20 fails in a state where the power is not turned on, the data stored in the non-volatile storage area 47a can be inherited to the storage unit 47 of the new control unit 20, so that the temperature of the power element 22a and the control unit 10 Temperature and / or operating data of the fan 28 is not lost. This means that the temperature of the power element 22a and the temperature in the control unit 10 and / or the operation history of the fan 28 can be displayed even after the pump device starts automatic operation in the new control unit 20. To do.
　本実施形態によれば、ポンプ装置に電力が供給されていないときでも、ユーザーやメンテナンス員が外部表示器７０を制御部２０に近づけるだけで、記憶部４７からパワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転を含む情報を取得することが可能である。 According to the present embodiment, even when power is not supplied to the pump device, the user or the maintenance staff simply brings the external display 70 close to the control unit 20, the temperature of the power element 22 a from the storage unit 47 and the control unit 10. It is possible to obtain information including the temperature within and / or the operation of the fan 28.
　本実施形態で採用される近距離無線通信（ＮＦＣ：Near　Field　Communication）は、数ｃｍの近距離でのみ相互通信が可能な技術である。したがって、外部表示器７０にパワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転やその他の各種情報を表示させるためには、ユーザーやメンテナンス員は外部表示器７０を制御部２０に近づける必要がある。このことは、外部表示器７０を操作するときは、ユーザーやメンテナンス員はポンプ装置の近くにいることを意味する。したがって、ユーザーやメンテナンス員はポンプ装置を目視しながら外部表示器７０を操作することになり、誤操作に起因したポンプ装置の予期しない動作を防止することに繋がる。また、複数のポンプ装置が設置された現場では、パワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転を表示したいポンプ装置の近距離でのみ通信可能となる為、無線通信にてよくある意図しない別のポンプ装置のパワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転を表示してしまうという誤表示を防止することが出来る。 Near field communication (NFC) employed in this embodiment is a technology that enables mutual communication only at a short distance of several centimeters. Therefore, in order to display the temperature of the power element 22a and the temperature in the control unit 10 and / or the operation of the fan 28 and various other information on the external display 70, the user and maintenance personnel control the external display 70. It is necessary to approach the part 20. This means that when operating the external display 70, the user and maintenance personnel are near the pump device. Therefore, the user or the maintenance staff operates the external display unit 70 while visually observing the pump device, which leads to preventing an unexpected operation of the pump device due to an erroneous operation. In addition, at a site where a plurality of pump devices are installed, since it is possible to communicate only at a short distance of the pump device for which the temperature of the power element 22a and the temperature in the control unit 10 and / or the operation of the fan 28 is desired to be displayed. It is possible to prevent erroneous display of displaying the temperature of the power element 22a of another pump apparatus and the temperature in the control unit 10 and / or the operation of the fan 28, which are often unintended in communication.
　図１３はポンプ装置のさらに他の実施形態を示す図である。本実施形態では、制御部２０は通信部６０を備えている。通信部６０は、有線通信または無線通信によって外部表示器７５の通信部７６に接続されている。外部表示器７５は制御部８０を備えており、制御部８０は通信部７６、記憶部７７、演算部７８、および表示部７９を備えている。制御部２０は、表示器４９を備えていてもよい。また、記憶部７７は記憶部４７と同様に図８の構成とする。 FIG. 13 is a view showing still another embodiment of the pump device. In the present embodiment, the control unit 20 includes a communication unit 60. The communication unit 60 is connected to the communication unit 76 of the external display 75 by wired communication or wireless communication. The external display 75 includes a control unit 80, and the control unit 80 includes a communication unit 76, a storage unit 77, a calculation unit 78, and a display unit 79. The control unit 20 may include a display device 49. The storage unit 77 has the configuration shown in FIG.
　図１４はポンプ装置のさらに他の実施形態を示す図である。本実施形態では、制御部２０には表示器は設けられておらず、代わりに、外部表示器７５に表示部７９と設定部８２が設けられている。その他の構成は図１３に示す実施形態と同様である。本実施形態では、パワー素子２２ａの温度並びに制御ユニット１０内の温度、および／またはファン２８の運転の状態は表示部７９に表示され、その他各種設定値の入力は、外部表示器７５の設定部８２を通じて行われる。 FIG. 14 is a diagram showing still another embodiment of the pump device. In the present embodiment, the control unit 20 is not provided with a display, and instead, the external display 75 is provided with a display unit 79 and a setting unit 82. Other configurations are the same as those of the embodiment shown in FIG. In the present embodiment, the temperature of the power element 22a, the temperature in the control unit 10, and / or the operating state of the fan 28 are displayed on the display unit 79, and other various setting values are input to the setting unit of the external display unit 75. 82.
　上述した実施形態は、本発明が属する技術分野における通常の知識を有する者が本発明を実施できることを目的として記載されたものである。上記実施形態の種々の変形例は、当業者であれば当然になしうることであり、本発明の技術的思想は他の実施形態にも適用しうる。したがって、本発明は、記載された実施形態に限定されることはなく、特許請求の範囲によって定義される技術的思想に従った最も広い範囲とすべきである。 The above-described embodiments are described for the purpose of enabling the person having ordinary knowledge in the technical field to which the present invention belongs to implement the present invention. Various modifications of the above embodiment can be naturally made by those skilled in the art, and the technical idea of the present invention can be applied to other embodiments. Therefore, the present invention should not be limited to the described embodiments, but should be the widest scope according to the technical idea defined by the claims.
　本発明は、ポンプ装置に利用可能である。 The present invention can be used for a pump device.
　１　　　水中ポンプユニット
　２　　　ポンプ
　３　　　電動機
　４　　　吸込管
　５　　　陸上ユニット
１０　　　制御ユニット
１１　　　配水管
１２　　　フロースイッチ
１３　　　圧力センサ
１５　　　圧力タンク
１８　　　排出管
１９　　　給水器具
２０，８０　　　制御部
２１　　　逆止弁
２２　　　インバータ
２２ａ　　パワー素子
２４　　　第１の温度センサ
２６　　　第２の温度センサ
２８　　　ファン
４６　　　設定部
４７　　　記憶部
４７ａ　　不揮発性記憶領域
４７ｂ　　揮発性記憶領域
４８　　　演算部
４９　　　表示部
５０　　　Ｉ／Ｏ部
５１　　　運転パネル
５２　　　リセットボタン
５３，６６　　　クリアボタン
６０　　　通信部
６１，６５，７０，７５　　　外部表示器
６７　　　制御部側アンテナ部
６８　　　集積回路
７１　　　表示器側アンテナ部
７２　　　表示部
７３　　　バッテリー
７４　　　データリーダー
７９　　　表示部
８２　　　設定部 DESCRIPTION OF SYMBOLS 1 Submersible pump unit 2 Pump 3 Electric motor 4 Suction pipe 5 Land unit 10 Control unit 11 Water distribution pipe 12 Flow switch 13 Pressure sensor 15 Pressure tank 18 Drain pipe 19 Water supply apparatus 20,80 Control part 21 Check valve 22 Inverter 22a Power element 24 1st temperature sensor 26 2nd temperature sensor 28 Fan 46 Setting part 47 Storage part 47a Nonvolatile storage area 47b Volatile storage area 48 Calculation part 49 Display part 50 I / O part 51 Operation panel 52 Reset button 53, 66 Clear Button 60 Communication unit 61, 65, 70, 75 External display unit 67 Control unit side antenna unit 68 Integrated circuit 71 Display unit side antenna unit 72 Display unit 73 Battery 74 Data reader 79 Display unit 82 Setting unit

Claims (8)

  1. 　ポンプと、
    　前記ポンプを回転させる電動機と、
    　前記電動機を変速可能とするインバータ、および該インバータの動作を制御する制御部を含む制御ユニットと、
    　前記制御ユニットを冷却するファンと、
    　前記制御ユニット内の温度を測定する第１の温度センサと、
    　前記インバータのパワー素子の温度を測定する第２の温度センサとを備え、
    　前記制御部は、
    　　前記制御ユニット内の温度が第１のしきい値よりも高いとき、または前記パワー素子の温度が第２のしきい値よりも高いときに、前記ファンを起動し、
    　　前記パワー素子の温度が第３のしきい値よりも低いとき、または前記制御ユニット内の温度が第４のしきい値よりも低いときに、前記ファンを停止することを特徴とするポンプ装置。     A pump,
    An electric motor for rotating the pump;
    A control unit including an inverter capable of shifting the electric motor, and a control unit for controlling the operation of the inverter;
    A fan for cooling the control unit;
    A first temperature sensor for measuring the temperature in the control unit;
    A second temperature sensor for measuring the temperature of the power element of the inverter;
    The controller is
    Activating the fan when the temperature in the control unit is higher than a first threshold or when the temperature of the power element is higher than a second threshold;
    The pump device, wherein the fan is stopped when the temperature of the power element is lower than a third threshold value, or when the temperature in the control unit is lower than a fourth threshold value.
  2. 　前記第１のしきい値、前記第２のしきい値、前記第３のしきい値、および前記第４のしきい値は、この順に大きいことを特徴とする請求項１に記載のポンプ装置。 2. The pump device according to claim 1, wherein the first threshold value, the second threshold value, the third threshold value, and the fourth threshold value are larger in this order. .
  3. 　前記第１の温度センサは前記制御部に取り付けられており、
    　前記第２の温度センサは前記パワー素子に取り付けられていることを特徴とする請求項１または２に記載のポンプ装置。     The first temperature sensor is attached to the controller;
    The pump device according to claim 1, wherein the second temperature sensor is attached to the power element.
  4. 　前記パワー素子の温度並びに前記制御ユニット内の温度、および／または前記ファンが運転していることを表示する表示器をさらに備えていることを特徴とする請求項１乃至３のいずれか一項に記載のポンプ装置。 4. The display according to claim 1, further comprising a display for displaying the temperature of the power element and the temperature in the control unit and / or that the fan is operating. 5. The pump device described.
  5. 　前記制御部は、外部表示器と有線通信または無線通信で接続することができることを特徴とする請求項１乃至４のいずれか一項に記載のポンプ装置。 The pump device according to any one of claims 1 to 4, wherein the control unit can be connected to an external display device by wired communication or wireless communication.
  6. 　前記制御部は、近距離無線通信（ＮＦＣ）によって前記外部表示器に接続できることを特徴とする請求項５に記載のポンプ装置。 The pump device according to claim 5, wherein the control unit can be connected to the external display by near field communication (NFC).
  7. 　前記制御部は、前記外部表示器からの電波を受信して該電波を電力に変換する制御部側アンテナ部と、前記電力によって駆動される集積回路および記憶部とを備えることを特徴とする請求項６に記載のポンプ装置。 The control unit includes a control unit side antenna unit that receives radio waves from the external display and converts the radio waves into electric power, and an integrated circuit and a storage unit that are driven by the electric power. Item 7. The pump device according to Item 6.
  8. 　前記制御部は、前記パワー素子の温度並びに前記制御ユニット内の温度、および／または前記ファンの運転を示すデータを前記記憶部に記憶し、
    　前記集積回路は、前記記憶部から前記データを読み取り、前記制御部側アンテナ部は前記データを前記外部表示器に送信することを特徴とする請求項７に記載のポンプ装置。     The control unit stores data indicating the temperature of the power element and the temperature in the control unit, and / or the operation of the fan in the storage unit,
    The pump device according to claim 7, wherein the integrated circuit reads the data from the storage unit, and the control unit side antenna unit transmits the data to the external display.
PCT/JP2016/075417 2015-11-26 2016-08-31 Pump device WO2017090292A1 (en)

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