WO2007132889A1 - 空気調和機 - Google Patents
空気調和機 Download PDFInfo
- Publication number
- WO2007132889A1 WO2007132889A1 PCT/JP2007/060036 JP2007060036W WO2007132889A1 WO 2007132889 A1 WO2007132889 A1 WO 2007132889A1 JP 2007060036 W JP2007060036 W JP 2007060036W WO 2007132889 A1 WO2007132889 A1 WO 2007132889A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- indoor
- motor
- microcomputer
- sensorless
- air conditioner
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
-
- 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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
Definitions
- the present invention relates to an indoor fan housed in an indoor unit, and an air conditioner including a sensorless DC motor that drives the indoor fan.
- a motor drive device of a sensorless DC motor also referred to as a brushless DC motor
- a rotor position detecting element such as a Hall element
- the control circuit is mounted on the motor internal board.
- FIG. 3 shows a configuration of a control circuit of the motor driving device.
- the switching circuit 103 is connected to the commercial AC power supply 100 via the rectifier circuit 101 and the smoothing capacitor 102, and the sensorless DC motor 104 used as a fan motor is connected to the output terminal of the switching circuit 103.
- the sensorless DC motor 104 is mounted with rotor position detection elements such as Hall elements 105a, 105b, and 105c, and the outputs of these Hall elements are supplied to the control circuit 106.
- the control circuit 106 detects the rotational position of the rotor in the sensorless DC motor 104 as well as the output force of the hall elements 105a, 105b, and 105c, and controls the drive circuit 107 according to the detection result.
- the drive circuit 107 outputs a pattern signal for energization control in accordance with a command from the control circuit 106.
- the switching circuit 103 drives each switching element on and off in accordance with the pattern signal.
- the driving circuit 107 and the switching circuit 103 are connected by six signal lines 120 for supplying pattern signals.
- the switching circuit 103, the sensorless DC motor 104, the Honoré elements 105a, 105b, 105c, the control circuit 106, the drive circuit 107, and the signal line 120 are mounted on the motor internal board of the motor indoor fan.
- a control power supply circuit 111 is connected to the output terminal of the rectifier circuit 101, and a control operating voltage output from the control power supply circuit 111 is an indoor control circuit (MCU) 112 using a microcomputer. And supplied to the motor internal substrate.
- the indoor control circuit 112 supplies rotation speed setting data corresponding to various input data to the control circuit 106 of the motor internal board.
- the rectifier circuit 101, the smoothing capacitor 102, the control power supply circuit 111, the indoor control circuit 112, and the like are mounted on the indoor printed circuit board in the control component box.
- the indoor print board and the motor internal board are connected by two DC power supply lines 121, two control power supply lines 122, and two data signal lines 123.
- a microcomputer is mounted on the indoor printed circuit board, and the force is also within the motor. It is conceivable to supply a pattern signal for energization control to the partial substrate side. However, in this arrangement, it is necessary to provide six signal lines for supplying pattern signals between the indoor printed board and the motor internal board. In addition, a detection terminal must be prepared on the motor's internal board to detect the winding current for the three phases of the sensorless DC motor. Therefore, even if a single microcomputer has the function of both the indoor control circuit function and the fan motor vector control function, the number of wires between the indoor printed circuit board and the motor internal circuit board can be reduced. There is a problem that will increase more than ever.
- An object of one aspect of the present invention is to take the above-mentioned circumstances into consideration, and the rotor position detection element requires no squeezing force, and the number of wires can be increased without worrying about destruction of the microcomputer. It is an object of the present invention to provide an air conditioner that can properly drive a sensorless direct current motor that does not cause any trouble.
- An air conditioner according to an aspect of the present invention includes:
- a sensorless DC motor having a plurality of windings and driving the indoor fan, and vector control based on the current flowing in each winding of the sensorless DC motor, for energization control of each winding of the sensorless DC motor.
- a microcomputer that generates pattern signals;
- An inverter that switches energization to each winding of the sensorless DC motor by switching according to a pattern signal generated by the microcomputer
- An indoor printed circuit board provided with both the microcomputer and the inverter;
- FIG. 1 is an exploded view showing a configuration of a housing of an indoor unit according to an embodiment of the present invention.
- FIG. 2 is a block diagram showing an electric circuit of the indoor unit in one embodiment.
- FIG. 3 is a diagram showing a configuration of an electric circuit of a conventional air conditioner.
- the installation plate 1 is fixed to the indoor wall surface, and the rear plate 2 is pulled and fixed to the installation plate 1.
- An indoor fan 3 having a horizontally long shape and a crossflow fan power is provided inside the rear plate 2.
- One end of the indoor fan 3 is supported by a sensorless DC motor (also called a brushless DC motor) 3M, which is a fan motor, and the other end is supported by a bearing 3a.
- the rear plate 2 is further provided with a heat exchange 4 so as to surround the indoor fan 3, and a front plate 5 is provided so as to cover the heat exchange 4.
- a decorative plate 6 is provided on the front plate 5, and a filter 7 is detachably mounted between the front plate 5 and the decorative plate 6.
- a vertical louver 8 and a horizontal louver 9 are provided at the outlet formed at the lower part of the front plate 5 and the lower part of the decorative plate 6.
- a control component box 50 is mounted on the side of the fan motor 3M of the rear plate 2.
- An indoor unit is configured from the installation plate 1 by the configuration of the horizontal louver 9 and the control component box 50, and various electric circuits are accommodated in the control component box 50.
- FIG. 2 shows the indoor printed circuit board 40 accommodated in the control component box 50 and its peripheral circuits.
- An inverter 20 is connected to a commercial AC power supply 10 via a rectifier circuit 11, and the output terminal of the inverter 20 via a connector 13 is connected to a sensorless DC motor 3M U-phase wire Lu, V-phase wire Lv, W Connection line Lw is connected.
- the inverter 20 converts the DC voltage output from the rectifier circuit 11 into an AC voltage having a predetermined frequency by switching according to control of the control unit 30 described later, and outputs the AC voltage.
- MOSF ET22u +, 22u-, 22v +, 22v-, 22w +, 22w- switching circuit current detection resistor 23u connected to the series circuit of MOSFET22u +, 22u_ in this switching circuit, MOSFET22v +, 22v in the switching circuit
- the current detection resistor 23v is connected to the series circuit of-
- the current detection resistor 23w is connected to the series circuit of MOSFETs 22w + and 22w-.
- the drive circuit 21 drives each MOSFET of the switching circuit on and off in accordance with a pattern signal supplied from the control unit 30 described later.
- the drive circuit 21 and the switching circuit are connected by six signal lines (wirings) R1.
- the inverter 20 and the sensorless DC motor 3M are connected by three energizing lines (wiring) R2.
- a voltage of a level corresponding to the current flowing in the feeder lines Lu, Lv, and Lw of the sensorless DC motor 3M is generated.
- a control power supply circuit 12 is connected to the output terminal of the rectifier circuit 11, and a control operating voltage Vdd output from the control power supply circuit 12 is supplied to a control unit (MCU) 30 using a microcomputer.
- the power supply terminal and the drive circuit 21 of the inverter 20 are supplied. In this case, the negative side of the power supply terminal of the control unit 30 is connected to the negative power supply line of the inverter 20.
- control unit 30 directly takes in the voltage generated in the current detection resistors 23u, 23v, 23w, and reads this as a voltage value by the internal AZD conversion function. Can do.
- the control unit 30 is connected with a display unit 31, an indoor / outdoor communication circuit 32, a louver drive circuit 33, and a light receiving unit 34.
- the drive circuit 21 of the inverter 20 and current detection resistors 23u, 23 V, 23w is connected.
- the display unit 31 displays various information related to the operation of the indoor unit.
- the indoor / outdoor communication circuit 32 transmits and receives data between the control unit 30 and an outdoor unit (not shown).
- the louver drive circuit 33 drives a louver motor 9M that drives the louver 9.
- the light receiving unit 34 receives infrared light emitted from a remote control type operating device (referred to as a remote control) 35.
- the control unit 30 and the drive circuit 21 are connected by six signal lines (wirings) R3 for supplying pattern signals.
- the control unit 30 detects the currents flowing in the wires Lu, Lv, and Lw of the sensorless DC motor 3M as well as the voltage forces generated in the current detection resistors 23u, 23v, and 23w, and performs vector control based on the detected currents. Generates a pattern signal for controlling the energization of the sensorless DC motor 3M's feeders Lu, Lv, and Lw, reads infrared light from the remote control 35, sends and receives data to and from the outdoor unit, and drives commands to the louver motor 9M. Control various operations of the indoor unit.
- the rectifier circuit 11, the inverter 20, the control power supply circuit 12, the control unit 30, the indoor / outside communication circuit 32, the louver drive circuit 33, and the like are mounted on the indoor printed board 40.
- This indoor printed circuit board 40 is accommodated in the control component box 50.
- the control component box 50 has a flow path of wind generated by the operation of the indoor fan 3.
- the control unit 30 on the indoor printed circuit board 40 corresponds to the windward side of the flow path, and the indoor print is on the leeward side.
- the indoor printed board 40 is accommodated so that the inverter 20 on the board 40 corresponds.
- the sensor-less DC motor 3M's winding lines Lu, Lv By providing a control unit 30 that generates a pattern signal for energization control for Lw and controls the operation of the indoor unit, and adopting a microcomputer as the control unit 30, a single microcomputer can be used for the sensorless DC motor 3M. Can be driven properly.
- control unit 30 Since the control unit 30 is provided on the one indoor printed board 40 together with the inverter 20, the wiring derived from the indoor printed board 40 is only the energization line R2 between the inverter 20 and the sensorless DC motor 3M. By reducing the number of wires derived from the indoor printed circuit board 40, the effects of noise can be reduced and costs can be reduced.
- control unit 30 Since the control unit 30 is not mounted on a sealed motor internal substrate as in the prior art, there is no concern about destruction of the control unit 30 due to heat.
- the mounting position of the control unit 30 and the position of the connector 13 are separated as much as possible, and the control unit 30 that is a microcomputer is connected to the energization line between the inverter 20 and the sensorless DC motor 3M. It is located away from R2. This makes it difficult for noise generated from the energization line R2 to reach the control unit 30, which is a detailed electronic component. In this respect as well, an abnormal stop or malfunction can be avoided, and the control unit 30 can always operate stably.
- the force is such that the current detection resistors 23u, 23v, and 23w are inserted into each series circuit of the inverter 20, as shown by the broken line in FIG.
- the current detection resistor 24 is inserted into the line, and the voltage generated in the current detection resistor 24 is supplied to the control unit 30 to detect the current flowing through the sensor-less DC motor 3M's feeder lines Lu, Lv, and Lw. Also good.
- the present invention can be applied to an air conditioner including a sensorless DC motor that drives an indoor fan.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Ac Motors In General (AREA)
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007800149207A CN101432577B (zh) | 2006-05-17 | 2007-05-16 | 空气调节器 |
| JP2008515587A JPWO2007132889A1 (ja) | 2006-05-17 | 2007-05-16 | 空気調和機 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006138100 | 2006-05-17 | ||
| JP2006-138100 | 2006-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007132889A1 true WO2007132889A1 (ja) | 2007-11-22 |
Family
ID=38693978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/060036 Ceased WO2007132889A1 (ja) | 2006-05-17 | 2007-05-16 | 空気調和機 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2007132889A1 (ja) |
| CN (1) | CN101432577B (ja) |
| WO (1) | WO2007132889A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2675059A1 (de) * | 2012-06-15 | 2013-12-18 | SICK STEGMANN GmbH | Antriebssystem |
| US9214884B2 (en) | 2013-04-11 | 2015-12-15 | Panasonic Intellectual Property Management Co., Ltd. | Motor driving device and brushless motor |
| US9383114B2 (en) | 2011-03-29 | 2016-07-05 | Mitsubishi Electric Corporation | Indoor equipment of air-conditioner |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002112508A (ja) * | 2001-08-20 | 2002-04-12 | Hitachi Ltd | 電動機と空気調和機 |
| JP2004263887A (ja) * | 2003-02-10 | 2004-09-24 | Toshiba Kyaria Kk | 空気調和機及び空気調和機用多パルス整流器 |
| JP3672876B2 (ja) * | 2002-02-26 | 2005-07-20 | 株式会社東芝 | ベクトル制御インバータ装置及び回転駆動装置 |
-
2007
- 2007-05-16 CN CN2007800149207A patent/CN101432577B/zh active Active
- 2007-05-16 JP JP2008515587A patent/JPWO2007132889A1/ja active Pending
- 2007-05-16 WO PCT/JP2007/060036 patent/WO2007132889A1/ja not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002112508A (ja) * | 2001-08-20 | 2002-04-12 | Hitachi Ltd | 電動機と空気調和機 |
| JP3672876B2 (ja) * | 2002-02-26 | 2005-07-20 | 株式会社東芝 | ベクトル制御インバータ装置及び回転駆動装置 |
| JP2004263887A (ja) * | 2003-02-10 | 2004-09-24 | Toshiba Kyaria Kk | 空気調和機及び空気調和機用多パルス整流器 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9383114B2 (en) | 2011-03-29 | 2016-07-05 | Mitsubishi Electric Corporation | Indoor equipment of air-conditioner |
| EP2505928A3 (en) * | 2011-03-29 | 2018-04-25 | Mitsubishi Electric Corporation | Indoor equipment of air-conditioner |
| EP2675059A1 (de) * | 2012-06-15 | 2013-12-18 | SICK STEGMANN GmbH | Antriebssystem |
| US9214884B2 (en) | 2013-04-11 | 2015-12-15 | Panasonic Intellectual Property Management Co., Ltd. | Motor driving device and brushless motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2007132889A1 (ja) | 2009-09-24 |
| CN101432577A (zh) | 2009-05-13 |
| CN101432577B (zh) | 2011-08-03 |
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