WO2021019731A1 - Ventilateur et procédé de commande de ventilateur - Google Patents

Ventilateur et procédé de commande de ventilateur Download PDF

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Publication number
WO2021019731A1
WO2021019731A1 PCT/JP2019/030016 JP2019030016W WO2021019731A1 WO 2021019731 A1 WO2021019731 A1 WO 2021019731A1 JP 2019030016 W JP2019030016 W JP 2019030016W WO 2021019731 A1 WO2021019731 A1 WO 2021019731A1
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WO
WIPO (PCT)
Prior art keywords
air volume
voltage
ventilation device
value
correction value
Prior art date
Application number
PCT/JP2019/030016
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English (en)
Japanese (ja)
Inventor
加藤　真也
福太郎 長田
祐樹 宮崎
Original Assignee
三菱電機株式会社
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.)
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Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2019/030016 priority Critical patent/WO2021019731A1/fr
Priority to JP2021536546A priority patent/JP7241886B2/ja
Publication of WO2021019731A1 publication Critical patent/WO2021019731A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present invention relates to a ventilation device that ventilates a room by generating an air flow and a control method for the ventilation device.
  • the ventilation device which is connected to the duct that connects the indoor and outdoor areas and ventilates the room by flowing the air inside the duct, automatically controls to keep the air volume constant against problems such as changes in the air volume due to the influence of the duct condition. May be done.
  • Patent Document 1 in a ventilation device having a fan that generates an air flow by driving a motor, the applied voltage of the motor is set according to the difference between the result of detecting the rotation speed of the motor and the rotation speed stored in the storage means. It is disclosed to control.
  • the number of rotations is the number of rotations per unit time, and is also called the rotation speed.
  • the ventilation device of Patent Document 1 stores the rotation speed for realizing a preset operating air volume in a ROM (Read Only Memory) for each applied voltage, and the stored rotation speed and the current rotation speed are used.
  • the applied voltage is controlled according to the difference between.
  • the ventilation device of Patent Document 1 can operate at a constant air volume even if the pressure loss of the duct changes by controlling the applied voltage so that the actual air volume is close to the instructed operating air volume.
  • the ventilation device can keep the air volume constant with respect to the preset operating air volume, while finely adjusting the air volume from the preset operating air volume. I can't do it. For example, in a situation where the ventilation volume when the ventilation device is operated with a certain operating air volume is slightly insufficient for the required ventilation volume, the ventilation device is said to increase the rotation speed slightly from the rotation speed stored in the ROM. It is not possible to make adjustments such as slightly increasing the air volume from the operating air volume. Since the ventilation device cannot finely adjust the air volume from the preset operating air volume according to the situation such as the place where the ventilation device is installed, it is necessary to operate with an air volume excessively larger than the required air volume.
  • the operation may be performed with an air volume smaller than the air volume.
  • the ventilation device since the ventilation device cannot finely adjust the air volume from the preset operating air volume, the ventilation device is operated at an air volume larger than the required air volume, or is operated at a required air volume. However, there was a problem that it was necessary to operate with an excessively small air volume.
  • the present invention has been made in view of the above, and an object of the present invention is to obtain a ventilation device capable of finely adjusting the air volume from an operating air volume preset in the ventilation device.
  • the ventilation device has a fan that generates an air flow by driving a motor, and ventilates the room by generating an air flow.
  • the ventilator according to the present invention is instructed to the ventilator by referring to the relationship between the operating air volume preset in the ventilator, the pressure loss in the flow path through which the air flow flows, and the voltage applied to the motor.
  • the voltage command is obtained by acquiring the voltage value corresponding to the operating air volume and the pressure loss in the environment where the ventilation system is installed, and correcting the voltage value based on the voltage correction value for adjusting the air volume from the operating air volume.
  • a voltage value calculation unit for calculating a value and a correction value holding unit for holding a correction value are provided.
  • the ventilation device according to the present invention has an effect that the air volume can be finely adjusted from the operating air volume preset in the ventilation device.
  • FIG. 1 A block diagram showing a hardware configuration of the ventilation device shown in FIG.
  • FIG. 1 A block diagram showing a functional configuration of the ventilation device shown in FIG.
  • FIG. 1 A flowchart showing the procedure of the operation of the ventilation device shown in FIG.
  • FIG. 1 when the ventilation device is installed.
  • the figure for demonstrating the example of adjusting the air volume in the ventilation apparatus shown in FIG. A flowchart for explaining a modified example of the operation by the ventilation device shown in FIG.
  • the figure which shows the example of the relationship between the operating air volume, the voltage and the rotation speed in the ventilation system shown in FIG. The figure which shows the schematic structure of the ventilation apparatus which concerns on Embodiment 2 of this invention.
  • FIG. 1 is a diagram showing a schematic configuration of a ventilation device according to a first embodiment of the present invention.
  • the ventilation device 100 takes in air from the room 16 by generating an air flow, and sends the taken-in air to the duct 18.
  • the duct 18 is provided behind the ceiling of the building and connects the indoor 16 and the outdoor 17.
  • the ventilation device 100 ventilates the room 16 by sending the air in the room 16 to the outside 17 through the duct 18.
  • the ventilation device 100 maintains a comfortable air environment in the room 16 by ventilating the room 16.
  • the ventilation device 100 has a main body 10 and an external terminal 15.
  • the main body 10 is installed behind the ceiling.
  • the main body 10 has a fan 11 on which the motor 12 is mounted and a control device 13.
  • the fan 11 is provided in the air passage 14 in the main body 10.
  • the fan 11 generates an air flow by driving the motor 12.
  • the control device 13 controls the entire ventilation device 100.
  • the external terminal 15 is a remote controller operated by a person in the room 16.
  • the external terminal 15 receives an instruction for starting and stopping operation and an instruction for air volume.
  • the control device 13 controls the start and stop of the operation and the switching of the air volume according to the instruction transmitted from the external terminal 15.
  • FIG. 2 is a block diagram showing a hardware configuration of the ventilation device shown in FIG. FIG. 2 shows a hardware configuration for driving the motor 12 of the ventilation device 100.
  • the commercial power supply 20 outputs a single-phase AC voltage to the ventilation device 100.
  • the converter 21, the inverter 22, and the capacitor 23 are connected between the commercial power supply 20 and the motor 12.
  • the converter 21 converts an AC voltage into a DC voltage by a rectifying action.
  • the capacitor 23 smoothes the DC voltage output by the converter 21.
  • the inverter 22 converts the DC voltage output by the capacitor 23 into a three-phase AC voltage.
  • the inverter 22 includes a switching circuit that applies an AC voltage to the motor 12.
  • the rotation speed sensor 26 detects the rotation speed of the motor 12.
  • the rotation speed sensor 26 outputs the detection result of the rotation speed to the control device 13.
  • the control device 13 controls the drive of the motor 12 by outputting a drive signal to the inverter 22.
  • the control device 13 includes a memory 24 and a processor 25 which is a processing circuit for executing a program stored in the memory 24.
  • the processor 25 executes a process based on the information stored in the memory 24 by executing the program.
  • the processor 25 is a CPU (Central Processing Unit).
  • the processor 25 may be a processing device, an arithmetic unit, a microprocessor, a microcomputer, or a DSP (Digital Signal Processor).
  • Each function of the control device 13 is realized by the processor 25 and software, firmware, or a combination of software and firmware.
  • the memory 24 is a non-volatile or volatile semiconductor memory, and is a RAM (Random Access Memory), ROM, flash memory, EPROM (Erasable Programmable Read Only Memory) or EEPROM (registered trademark) (Electrically Erasable Programmable Read Only Memory). Is.
  • the memory 24 also includes an external storage device that holds information.
  • the control device 13 has an interface for communication with the external terminal 15. In FIG. 2, the interface is not shown.
  • the control device 13 may realize all or a part of each function on the hardware by the wired logic.
  • the processing circuits for realizing the functions of the control device 13 are a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), and the like. Alternatively, it may be a combination of these.
  • the external terminal 15 has an input device for inputting various information, an interface for communication with the control device 13, and a display device for displaying information about the operating state.
  • the input device is a device such as an input key or a touch panel.
  • the display device is a device such as a liquid crystal panel or an organic EL (Electro Luminescence) panel.
  • the external terminal 15 has a memory for holding information and a processing circuit for performing various processes. In FIG. 2, the input device, the interface, the display device, the memory, and the processing circuit are not shown.
  • FIG. 3 is a block diagram showing a functional configuration of the ventilation device shown in FIG. FIG. 3 shows a functional configuration for driving the motor 12 of the ventilation device 100.
  • the control device 13 has a target air volume input unit 31 into which a target air volume Qp is input, a rotation speed comparison unit 32 that compares the target rotation speed Np with the current rotation speed Nnw, and a voltage value for calculating a voltage command value Vc.
  • Each function of the rotation speed comparison unit 32, the voltage value calculation unit 33, the drive signal generation unit 34, the pressure loss calculation unit 35, and the correction value selection unit 37 is realized by using the processor 25.
  • the function of the target air volume input unit 31 is realized by using the interface and the processor 25.
  • the function of the storage unit 36 is realized by using the memory 24.
  • the external terminal 15 has an air volume indicating unit 27 for instructing the target air volume Qp, an air volume adjusting instructing unit 28 for instructing the air volume adjustment, and a display unit 29 for displaying information.
  • the air volume indicator 27 receives an operation for selecting an operation mode from a plurality of operation modes for ventilating with different air volumes.
  • the air volume indicating unit 27 instructs the control device 13 as the target air volume Qp for the air volume corresponding to the selected operation mode.
  • the plurality of operation modes are three operation modes of "strong mode", “medium mode”, and “weak mode".
  • the "strong mode” is an operation mode in which ventilation is performed by the strongest and largest air volume in each operation mode.
  • the “weak mode” is an operation mode in which ventilation is performed by the smallest air volume in each operation mode.
  • the “medium mode” is an operation mode in which ventilation is performed according to the air volume between the "strong mode” air volume and the "weak mode” air volume.
  • a plurality of air volume correction values for adjusting the air volume are set in the control device 13 for each operating air volume set in advance.
  • the air volume adjustment instruction unit 28 accepts an operation for determining an arbitrary air volume correction value from a plurality of air volume correction values.
  • the air volume adjustment instruction unit 28 instructs the control device 13 to adjust the air volume based on the determined air volume correction value.
  • the display unit 29 displays information about the determined air volume correction value.
  • Each function of the air volume indicator 27 and the air volume adjustment indicator 28 is realized by using an input device and an interface.
  • the function of the display unit 29 is realized by using a display device.
  • a plurality of operating air volumes are set in advance in the ventilation device 100.
  • a plurality of operating air volumes are set in stages.
  • the user who operates the external terminal 15 selects one of a plurality of operating air volumes by operating the input device of the external terminal 15.
  • the air volume indicator 27 instructs the ventilation device 100 to operate at the selected operating air volume.
  • the air volume indicator 27 transmits an air volume instruction indicating a target air volume Qp, which is the selected operating air volume, to the control device 13. The operation when the above voltage correction value is set will be described later.
  • the target air volume input unit 31 receives the instruction of the target air volume Qp.
  • the target air volume input unit 31 acquires the target rotation speed Np, which is the rotation speed corresponding to the target air volume Qp, by referring to the storage unit 36.
  • the target air volume input unit 31 outputs the acquired target rotation speed Np to the rotation speed comparison unit 32.
  • the rotation speed sensor 26 detects the current rotation speed Nnw and outputs the value of the current rotation speed Nnw to the rotation speed comparison unit 32.
  • the rotation speed comparison unit 32 compares the target rotation speed Np with the current rotation speed Nnw, and outputs the comparison result to the voltage value calculation unit 33.
  • the voltage value calculation unit 33 generates a command value Vc of a voltage that brings the current rotation speed Nnw closer to the target rotation speed Np.
  • the voltage value calculation unit 33 outputs the generated command value Vc to the drive signal generation unit 34.
  • the drive signal generation unit 34 generates a drive signal Sd according to the command value Vc, and outputs the drive signal Sd to the inverter 22.
  • the drive signal Sd is a control signal such as a pulse width modulation signal.
  • FIG. 4 is a diagram showing an example of the relationship between voltage, air volume, pressure loss, and rotation speed in the ventilation device shown in FIG.
  • FIG. 4 shows a graph showing the relationship between the rotation speed and the air volume, and a graph showing the relationship between the static pressure and the air volume.
  • a graph showing the relationship between the rotation speed and the air volume a graph is shown for the case where the voltage values are V 1 , V 2 , V 3 , V 4 , V 5 , and V 6 .
  • As a graph showing the relationship between the static pressure and the air volume a graph showing the case where the voltage values are V 1 , V 2 , V 3 , V 4 , V 5 , and V 6 is shown.
  • V 1 , V 2 , V 3 , V 4 , V 5 , and V 6 shall be an arbitrary voltage value for which V 1 > V 2 > V 3 > V 4 > V 5 > V 6 holds.
  • the storage unit 36 is not limited to the case where the data for each of the six voltage values is stored, and the data for each of the five or less voltage values may be stored, and more than six voltages. Data for each of the values may be stored.
  • Q l , Q m , and Q h are operating air volumes preset in the ventilation device 100, and Q l ⁇ Q m ⁇ Q h holds.
  • Q l is a preset operating air volume for the "weak mode”.
  • Q m is a preset operating air volume for the “medium mode”.
  • Q h is a preset operating air volume for the “strong mode”.
  • the ventilation device 100 is not limited to the case where three operating air volumes of Q l , Q m , and Q h are set, and two or less operating air volumes or more than three operating air volumes may be set. ..
  • N l1, N l2, N l3 , N l4, N l5, N l6 in a case of voltages V 1 to the motor 12, respectively, V 2, V 3, V 4, V 5, and V 6 is applied, the operating air volume Q It is the rotation speed of the motor 12 when operating the ventilation device 100 with l .
  • N m1 , N m2 , N m3 , N m4 , and N m5 use the ventilation device 100 with an operating air volume of Q m when the voltages V 1 , V 2 , V 3 , V 4 , and V 5 are applied to the motor 12, respectively. It is the rotation speed of the motor 12 at the time of operation.
  • N h1 , N h2 , N h3 , and N h4 are motors 12 when the ventilation device 100 is operated with an operating air volume Q h when voltages V 1 , V 2 , V 3 , and V 4 are applied to the motor 12, respectively.
  • each graph showing the pressure losses L 1 , L 2 , L 3 , and L 4 in the flow path through which the air flow flows is shown.
  • L 1 , L 2 , L 3 , and L 4 L 1 ⁇ L 2 ⁇ L 3 ⁇ L 4 holds when the air volume is constant.
  • the rotation speed is N h 3 when the operation is performed at the operating air volume Q h by applying the voltage V 3 .
  • FIG. 5 is a diagram showing an example of the relationship between voltage and pressure loss in the ventilation device shown in FIG.
  • FIG. 5 shows a data associating the values of the pressure loss of voltage when the rotation speed is a specific rotational speed Np d.
  • the data shown in FIG. 5 is acquired based on the relationship shown in FIG.
  • the data shown in FIG. 5 is acquired for each operating air volume and stored in the storage unit 36.
  • the storage unit 36, the value of the rotational speed Np d are stored. Relationship represented by the data in Figure 5, the voltage V d1, V d2 at a particular rotational speed Np d, based on ⁇ ⁇ ⁇ , L 1 ventilator 100 is a pressure loss in the installation environment, L 2 , ... is used to calculate.
  • the data in which the voltage value and the pressure loss value are associated with each other does not have to be acquired for each operating air volume.
  • Data associating the values of the pressure loss of the voltage is assumed may be a data for a constant rotational speed Np d at a certain flow rate.
  • Np d the larger the maximum value of the voltage value that can be commanded by the drive signal, the higher the resolution of the pressure loss, so that the pressure loss can be calculated with high accuracy.
  • FIG. 6 is a diagram showing an example of the relationship between the operating air volume, the pressure loss, and the voltage in the ventilation device shown in FIG.
  • FIG. 6 shows data in which the value of the operating air volume, the value of the pressure loss, and the value of the voltage are associated with each other.
  • the data shown in FIG. 6 is acquired based on the relationship shown in FIG.
  • the data shown in FIG. 6 is stored in the storage unit 36.
  • the relationship shown in FIG. 6 shows the voltage values V l1 , V l2 , V l3 , ...,
  • FIG. 7 is a diagram showing an example of the relationship between the operating air volume, the pressure loss, and the voltage correction value in the ventilation device shown in FIG.
  • the storage unit 36 stores a plurality of preset air volume correction values "+ Q h1 ", “-Q h1 ", “+ Q h2 “, “-Q h2 “, ...
  • “+ Q h1 ” is an air volume correction value representing the addition of “Q h1 ”.
  • “ ⁇ Q h1 ” is an air volume correction value representing the subtraction of “Q h1 ”.
  • “+ Q h2 ” is an air volume correction value representing the addition of “Q h2 ”.
  • “ ⁇ Q h2 ” is an air volume correction value representing the subtraction of “Q h2 ”.
  • “Q h1 ” and “Q h2 ” are adjustment amounts of air volume, and Q h1 ⁇ Q h2 holds.
  • a plurality of preset air volume correction values are stored for each of the operating air volume Q m and the operating air volume Q l , as in the case of the operating air volume Q h .
  • “+ Q m1 ” is an air volume correction value for the operating air volume Q m , and represents the addition of “Q m1 ”.
  • “ ⁇ Q m1 ” is an air volume correction value for the operating air volume Q m , and represents the subtraction of “Q m1 ”.
  • An arbitrary number of air volume correction values can be stored in the storage unit 36 for each of the operating air volumes Q h , Q m , and Q l .
  • the storage unit 36 stores a voltage correction value corresponding to the air volume correction value for each value of the pressure loss L.
  • the storage unit 36 functions as a correction value holding unit that holds the voltage correction value.
  • 7, "+ V h11” is a voltage correction value corresponding to the "+ Q h1", a voltage correction value when the pressure loss is L 1.
  • “+ V h12 ” is a voltage correction value corresponding to “+ Q h1 ”, and is a voltage correction value when the pressure loss is L 2 .
  • “+ V h13” is a voltage correction value corresponding to the "+ Q h1", a voltage correction value when the pressure loss is L 3.
  • the storage unit 36 "- Q h1", “+ Q h2" - for even the air amount correction value of "Q h2", as in the case of "+ Q h1" voltage when the pressure loss is L 1 correction value "-V h11", “+ V h21", - a "V h21", the voltage correction value when the pressure loss is L 2 "-V h12", “+ V h22", - a "V h22” voltage correction value when the pressure loss is L 3 "-V h13", "+ V h23” - and a "V h23" are stored.
  • the voltage correction value stored in the storage unit 36 is not limited to the voltage correction value for each of the three values L 1 , L 2 , and L 3 indicating the pressure loss L.
  • the value indicating the pressure loss L may be less than three or more than three.
  • the voltage correction value for each value of the pressure loss L is stored for each air volume correction value.
  • "+ V m11” is a voltage correction value corresponding to L 1 and a pressure loss L to be air volume correction value "+ Q m1”.
  • "-V m11” is a voltage correction value corresponding to L 1 and is a flow rate correction value "-Q m1” and the pressure loss L.
  • "+ V m12” is a voltage correction value corresponding to the L 2 is a flow rate correction value "+ Q m1" and the pressure loss L.
  • FIG. 8 is a flowchart showing a procedure of the operation performed by the ventilation device shown in FIG. 1 when the ventilation device is installed.
  • the operation according to the procedure shown in FIG. 8 is the operation of the ventilation device 100 when the ventilation device 100 is installed at the installation location.
  • the ventilator 100 determines the pressure loss and sets the voltage correction value for each operation mode by the operation according to the procedure shown in FIG.
  • the operation according to the procedure shown in FIG. 8 is started according to the operation by the contractor who installs the ventilation device 100.
  • step S1 the drive signal generation unit 34 outputs the drive signal Sd.
  • the drive signal Sd output here is a drive signal for a trial run of the ventilation device 100, and is a preset initial drive signal.
  • the motor 12 is driven by the output of the drive signal Sd to the inverter 22.
  • step S2 the rotation speed sensor 26 detects the rotation speed Nnw of the motor 12.
  • the rotation speed sensor 26 outputs the value of the rotation speed Nnw to the rotation speed comparison unit 32.
  • Rotational speed comparing section 32 reads the value of the rotational speed Np d above from the storage unit 36.
  • step S3 the rotation speed comparing section 32, the rotational speed Nnw it is determined whether or not the same as the rotation speed Np d read. If the rotational speed Nnw is different from the judgment and the rotation speed Np d (step S3, No), the rotation speed comparing section 32, in step S4, determines whether or not the rotational speed Nnw is smaller than the rotation speed Np d To do.
  • step S4 If the rotational speed Nnw is determined to be smaller than the rotation speed Np d (step S4, Yes), the voltage value calculating unit 33, in step S5, by adding the preset adjustment value to the current command value Vc , Increase the voltage command value Vc. The voltage value calculation unit 33 outputs the command value Vc adjusted by addition to the drive signal generation unit 34.
  • step S4 the voltage value calculating unit 33, in step S6, subtracting the adjustment value set in advance from the current command value Vc As a result, the command value Vc of the voltage is reduced.
  • the voltage value calculation unit 33 outputs the command value Vc adjusted by subtraction to the drive signal generation unit 34.
  • step S5 or step S6 the ventilator 100 returns the procedure to step S1.
  • the drive signal generation unit 34 generates the drive signal Sd according to the command value Vc adjusted in step S5 or step S6.
  • Step S3 If the rotational speed Nnw in Step S3 described above is determined to be equal to the rotational speed Np d (step S3, Yes), the voltage value calculating portion 33, the current command value Vc, for the determination of the pressure loss L Let the voltage value Vd be.
  • step S7 the voltage value calculation unit 33 outputs the voltage value Vd for determining the pressure loss L to the pressure loss calculation unit 35.
  • step S8 the pressure loss calculation unit 35 calculates the pressure loss L corresponding to the voltage value Vd by referring to the relationship between the voltage and the pressure loss shown in FIG.
  • the pressure loss calculation unit 35 determines the value of the pressure loss L corresponding to the voltage value Vd from the respective values of L 1 , L 2 , ... Stored in the storage unit 36.
  • the pressure loss calculation unit 35 calculates the pressure loss L by reading the determined value from the storage unit 36.
  • the pressure loss calculation unit 35 holds the calculated pressure loss L.
  • the air volume adjustment instruction unit 28 accepts an operation for determining an arbitrary air volume correction value from a plurality of air volume correction values for each preset operating air volume.
  • the air volume adjustment instruction unit 28 instructs the control device 13 to adjust the air volume based on the determined air volume correction value.
  • the correction value selection unit 37 selects a voltage correction value from the voltage correction values stored in the storage unit 36 based on the air volume correction value instructed by the air volume adjustment instruction unit 28.
  • the correction value selection unit 37 selects the voltage correction value corresponding to the air volume correction value instructed for each operating air volume and the pressure loss L calculated in step S8 by referring to the relationship shown in FIG. 7.
  • the ventilation device 100 ends the operation according to the procedure shown in FIG.
  • FIG. 9 is a flowchart showing a procedure of operation performed by the ventilation device shown in FIG. 1 during operation for ventilation.
  • the operation according to the procedure shown in FIG. 9 is the operation of the ventilation device 100 after the ventilation device 100 is installed at the installation location.
  • the operation according to the procedure shown in FIG. 9 is started according to the operation by the user who uses the ventilation device 100.
  • the target air volume input unit 31 When the target air volume Qp is input to the target air volume input unit 31, the target air volume input unit 31 outputs the target air volume Qp to the voltage value calculation unit 33. As a result, in step S11, the voltage value calculation unit 33 acquires the target air volume Qp.
  • step S12 the voltage value calculation unit 33 determines the voltage value Vf corresponding to the target air volume Qp, the operating air volume and the pressure loss L, by referring to the relationship between the operating air volume, the pressure loss and the voltage shown in FIG. get.
  • the voltage value calculation unit 33 describes the operating air volume, which is the target air volume Qp among the operating air volumes Q l , Q m , and Q h stored in the storage unit 36, and the pressure loss L read from the pressure loss calculation unit 35. Determine the value of the voltage that corresponds to the value.
  • the voltage value calculation unit 33 acquires the voltage value Vf by reading the determined value from the storage unit 36.
  • the correction value selection unit 37 outputs the voltage correction value selected for the operating air volume, which is the target air volume Qp, among the voltage correction values selected in step S9 above to the voltage value calculation unit 33. As a result, in step S13, the voltage value calculation unit 33 acquires the voltage correction value for the operating air volume which is the target air volume Qp.
  • step S14 the voltage value calculation unit 33 calculates the voltage command value Vc by adding the voltage correction value acquired in step S13 to the voltage value Vf acquired in step S12.
  • the voltage value calculation unit 33 outputs the command value Vc, which is the result of addition of the voltage value Vf and the voltage correction value, to the drive signal generation unit 34.
  • step S15 the drive signal generation unit 34 generates the drive signal Sd according to the command value Vc.
  • the drive signal generation unit 34 outputs the generated drive signal Sd to the inverter 22.
  • the correction value selection unit 37 outputs an instructed air volume correction value for the operating air volume, which is the target air volume Qp, to the display unit 29.
  • the display unit 29 displays information about the air volume adjustment in the current ventilation based on the air volume correction value.
  • FIG. 10 is a diagram for explaining an example of adjusting the air volume in the ventilation device shown in FIG.
  • FIG. 10 shows a graph showing the pressure loss L together with a graph showing the relationship between the static pressure and the air volume.
  • the intersection of the graph of the relationship between the static pressure and the air volume and the graph of the pressure loss L represents the operating point of the fan 11.
  • the air volume is adjusted when the instructed air volume correction value is “+ Q h1 ” and when the instructed air volume correction value is “ ⁇ Q h2 ”.
  • the relationship between static pressure and air volume is shown for the case without it. Further, in the example shown in FIG. 10, it is assumed that the value of the pressure loss L calculated in step S8 above is L 2 .
  • the ventilation device 100 When the air volume is not adjusted, the ventilation device 100 operates at the operating air volume Q h .
  • the command value Vc in this case is “V h2 ” shown in FIG.
  • the correction value selection unit 37 selects "+ V h12 " as the voltage correction value based on the relationship shown in FIG. Voltage value calculation unit 33, by adding “+ V h12" to "V h2”, calculates the "V h2 + V h12" as a command value Vc.
  • the air volume of the ventilation device 100 is adjusted from the operating air volume Q h to "Q h + Q h 1 ".
  • the correction value selection unit 37 selects "-V h22 " as the voltage correction value based on the relationship shown in FIG. 7.
  • Voltage value calculation unit 33 by adding “-V h22" to "V h2”, calculates the "V h2 -V h22" as a command value Vc.
  • the air volume of the ventilation device 100 is adjusted from the operating air volume Q h to “Q h ⁇ Q h2 ”.
  • FIG. 11 is a flowchart for explaining a modified example of the operation by the ventilation device shown in FIG.
  • the operation procedure shown in FIG. 11 is an operation procedure performed by the ventilation device 100 when the ventilation device 100 is installed, and is a modification of the operation procedure shown in FIG.
  • the target rotation speed Np is acquired based on the relationship between the operating air volume, the voltage, and the rotation speed, and the current rotation speed Nnw and the target rotation speed Np are compared.
  • FIG. 12 is a diagram showing an example of the relationship between the operating air volume, the voltage, and the rotation speed in the ventilation device shown in FIG.
  • FIG. 12 shows data in which the value of the operating air volume, the value of the voltage, and the value of the rotation speed are associated with each other.
  • the data shown in FIG. 12 is acquired based on the relationship shown in FIG.
  • the data shown in FIG. 12 is stored in the storage unit 36.
  • the data shown in FIG. 12 is used to acquire the target rotation speed Np corresponding to the target air volume Qp and the command value Vc of the voltage.
  • the target air volume input unit 31 When the target air volume Qp is input to the target air volume input unit 31, the target air volume input unit 31 outputs the target air volume Qp to the voltage value calculation unit 33. As a result, in step S21 shown in FIG. 11, the voltage value calculation unit 33 acquires the target air volume Qp. In step S22, the voltage value calculation unit 33 sets the initial value Vs of the voltage as the command value Vc.
  • the initial value Vs is a voltage value preset for the trial run of the ventilation device 100.
  • step S23 the target air volume input unit 31 acquires the target rotation speed Np.
  • the target air volume input unit 31 acquires the target rotation speed Np, which is the rotation speed corresponding to the command value Vc and the target air volume Qp, by referring to the relationship between the operating air volume, the voltage, and the rotation speed shown in FIG.
  • the target air volume input unit 31 outputs the acquired target rotation speed Np to the rotation speed comparison unit 32.
  • step S24 the rotation speed sensor 26 detects the rotation speed Nnw of the motor 12.
  • the rotation speed sensor 26 outputs the value of the rotation speed Nnw to the rotation speed comparison unit 32.
  • step S25 the rotation speed comparison unit 32 determines whether or not
  • the threshold value ⁇ Na is a threshold value for determining whether or not the difference in the rotation speed Nnw with respect to the target rotation speed Np is such a difference that does not affect the calculation of the pressure loss L, and is a preset threshold value. is there.
  • the rotation speed comparison unit 32 determines in step S26 whether or not the rotation speed Nnw is smaller than the target rotation speed Np. To do.
  • the voltage value calculation unit 33 adds a preset adjustment value to the current command value Vc in step S27. , Increase the voltage command value Vc.
  • the voltage value calculation unit 33 outputs the command value Vc adjusted by addition to the drive signal generation unit 34.
  • the voltage value calculation unit 33 subtracts the preset adjustment value from the current command value Vc in step S28. As a result, the command value Vc of the voltage is reduced.
  • the voltage value calculation unit 33 outputs the command value Vc adjusted by subtraction to the drive signal generation unit 34.
  • the drive signal generation unit 34 generates the drive signal Sd according to the command value Vc adjusted in step S27 or step S28. After completing step S27 or step S28, the ventilator 100 returns the procedure to step S23.
  • step S25 When it is determined in step S25 above that
  • step S30 the pressure loss calculation unit 35 calculates the pressure loss L corresponding to the voltage value Vd by referring to the relationship between the voltage and the pressure loss shown in FIG.
  • the pressure loss calculation unit 35 determines the value of the pressure loss corresponding to the voltage value Vd from the respective values of the pressure loss L stored in the storage unit 36, L 1 , L 2 , ....
  • the pressure loss calculation unit 35 calculates the pressure loss L by reading the determined value from the storage unit 36.
  • the pressure loss calculation unit 35 holds the calculated pressure loss L.
  • step S31 the correction value selection unit 37 selects a voltage correction value from the voltage correction values stored in the storage unit 36 based on the air volume correction value instructed by the air volume adjustment instruction unit 28.
  • the correction value selection unit 37 selects the voltage correction value corresponding to the air volume correction value instructed for each operating air volume and the pressure loss L calculated in step S30 by referring to the relationship shown in FIG. 7.
  • the ventilation device 100 ends the operation according to the procedure shown in FIG.
  • the rotation speed comparison unit 32 determines whether or not
  • the ventilation device 100 stores a voltage value corresponding to the operating air volume instructed to the ventilation device 100 and the pressure loss in the environment in which the ventilation device 100 is installed in the storage unit 36.
  • the command value Vc of the voltage is calculated by correcting based on the correction value.
  • the ventilation device 100 has an effect that the air volume can be finely adjusted from the operating air volume preset in the ventilation device 100.
  • FIG. 13 is a diagram showing a schematic configuration of a ventilation device according to a second embodiment of the present invention.
  • the ventilation device 101 according to the second embodiment is a heat exchange type ventilation device that ventilates while exchanging heat between the supply air flow and the exhaust flow.
  • the ventilation device 101 ventilates the indoor 16 by sending the air of the indoor 16 to the outdoor 17 through the exhaust duct 48 and taking the air of the outdoor 17 into the indoor 16 through the air supply duct 49.
  • the same components as those in the first embodiment are designated by the same reference numerals, and the configurations different from those in the first embodiment will be mainly described.
  • the ventilation device 101 has a main body 40 and an external terminal 15.
  • the main body 40 has an exhaust fan 41 which is a fan on which the motor 43 is mounted, an air supply fan 42 which is a fan on which the motor 44 is mounted, and a control device 13.
  • the exhaust fan 41 is provided in the exhaust air passage 46 in the main body 40.
  • the exhaust fan 41 generates an exhaust flow by driving the motor 43.
  • the exhaust flow is an air flow from the indoor 16 to the outdoor 17.
  • the air supply fan 42 is provided in the air supply air passage 47 in the main body 40.
  • the air supply fan 42 generates an air supply by driving the motor 44.
  • the air supply is an air flow from the outdoor 17 to the indoor 16.
  • the heat exchanger 45 is provided at a position where the exhaust air passage 46 and the air supply air passage 47 intersect.
  • the heat exchanger 45 performs total heat exchange between the supply air flow and the exhaust flow.
  • the ventilation device 101 maintains a comfortable air environment in the room 16 by ventilating the room 16. Further, the ventilation device 101 reduces the temperature difference between the air taken into the room 16 and the air in the room 16 by heat exchange between the air supply airflow and the exhaust flow, and reduces the air conditioning load in the room 16.
  • the air volume of the exhaust flow and the operating air volume which is the air volume of the supply air flow, are preset.
  • the voltage value calculation unit 33 shown in FIG. 3 acquires a voltage value corresponding to the operating air volume instructed to the ventilation device 101 and the pressure loss in the environment in which the ventilation device 101 is installed.
  • the voltage value calculation unit 33 calculates the command value of the voltage applied to the motors 43 and 44 by correcting the acquired voltage value based on the voltage correction value.
  • the ventilation device 101 according to the second embodiment has a voltage corresponding to the operating air volume instructed to the ventilation device 101 and the pressure loss in the environment in which the ventilation device 101 is installed, similarly to the ventilation device 100 according to the first embodiment.
  • the voltage command value Vc is calculated by correcting the value based on the voltage correction value stored in the storage unit 36.
  • the ventilation device 101 has an effect that the air volume can be finely adjusted from the operating air volume preset in the ventilation device 100.
  • the configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ventilation (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

Le ventilateur selon l'invention comprend : une unité de calcul de valeur de tension (33) qui se réfère à la relation entre un débit de fonctionnement défini dans le ventilateur, une perte de pression dans un trajet d'écoulement dans lequel un flux d'air s'écoule et une tension appliquée à un moteur, afin d'acquérir une valeur de tension correspondant à un débit d'air de fonctionnement commandé pour le ventilateur, et une perte de pression dans l'environnement dans lequel le ventilateur est installé, et règle la valeur de tension au moyen d'une valeur de réglage de tension afin de régler le débit à partir du débit de fonctionnement, de manière à calculer une valeur de commande de tension ; et une unité de stockage (36) qui sert d'unité de maintien de valeur de réglage destinée à maintenir la valeur de réglage.
PCT/JP2019/030016 2019-07-31 2019-07-31 Ventilateur et procédé de commande de ventilateur WO2021019731A1 (fr)

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PCT/JP2019/030016 WO2021019731A1 (fr) 2019-07-31 2019-07-31 Ventilateur et procédé de commande de ventilateur
JP2021536546A JP7241886B2 (ja) 2019-07-31 2019-07-31 換気装置および換気装置の制御方法

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PCT/JP2019/030016 WO2021019731A1 (fr) 2019-07-31 2019-07-31 Ventilateur et procédé de commande de ventilateur

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05146189A (ja) * 1991-11-18 1993-06-11 Matsushita Seiko Co Ltd 風量一定制御ｄｃフアンモータ
JP2006207880A (ja) * 2005-01-26 2006-08-10 Matsushita Electric Ind Co Ltd 換気扇
JP2010190524A (ja) * 2009-02-19 2010-09-02 Mitsubishi Electric Corp 換気装置、及び換気装置の制御方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05146189A (ja) * 1991-11-18 1993-06-11 Matsushita Seiko Co Ltd 風量一定制御ｄｃフアンモータ
JP2006207880A (ja) * 2005-01-26 2006-08-10 Matsushita Electric Ind Co Ltd 換気扇
JP2010190524A (ja) * 2009-02-19 2010-09-02 Mitsubishi Electric Corp 換気装置、及び換気装置の制御方法

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