CN101432577B - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
CN101432577B
CN101432577B CN2007800149207A CN200780014920A CN101432577B CN 101432577 B CN101432577 B CN 101432577B CN 2007800149207 A CN2007800149207 A CN 2007800149207A CN 200780014920 A CN200780014920 A CN 200780014920A CN 101432577 B CN101432577 B CN 101432577B
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CN
China
Prior art keywords
motor
indoor
microcomputer
sensor
inverter
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Application number
CN2007800149207A
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Chinese (zh)
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CN101432577A (en
Inventor
武岛由记子
温品治信
远藤隆久
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Toshiba Carrier Corp
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Toshiba Carrier Corp
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Publication of CN101432577A publication Critical patent/CN101432577A/en
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    • 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

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  • 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)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

A control section (30) generates a pattern signal for energization control of winding wires (Lu, Lv, Lw) of a sensorless direct current motor (3M) by vector control, and controls operation of an indoor unit. A microcomputer is employed as such control section (30). The control section (30) is arranged on one indoor printed board (40) with an inverter (20).

Description

Air regulator
Technical field
The present invention relates to comprise indoor fan that is contained in the indoor set and the air regulator that drives the no sensor dc motor of this indoor fan.
Background technology
The known motor drive (for example No. 3442024 communiques of Japan Patent) that the no sensor dc motor (being also referred to as the brushless DC motor) that possesses rotor-position detecting elements such as Hall element is arranged.This motor drive comprise switching to the switch element of each winding of no sensor dc motor energising, drive this switch element drive circuit, control this drive circuit and adjust the control circuit etc. of no sensor dc motor revolution, these switch elements, drive circuit, control circuit are loaded on the motor interior substrate.
Fig. 3 illustrates the structure of the control circuit of this motor drive.
That is, on-off circuit 103 is connected to commercial ac power source 100 by rectification circuit 101 and smmothing capacitor 102, is connected to the output of this on-off circuit 103 as the no sensor dc motor 104 of fan motor.On no sensor dc motor 104, adorning rotor-position detecting element for example Hall element 105a, 105b, 105c, the output supply control circuit 106 of these Hall elements.Control circuit 106 detects the position of rotation of no sensor dc motor 104 rotors from the output of Hall element 105a, 105b, 105c, according to this testing result control drive circuit 107.Drive circuit 107 outputs are according to the energising control mode signal of the instruction of control circuit 106.On-off circuit 103 carries out open and close according to this mode signal to each switch element and drives.6 signal line 120 of supplying with usefulness by mode signal between drive circuit 107 and the on-off circuit 103 are connected.
This on-off circuit 103, no sensor dc motor 104, Hall element 105a, 105b, 105c, control circuit 106, drive circuit 107 and holding wire 120 etc. are loaded on the motor interior substrate of indoor fan.
In addition, connect control power supply circuit 111 on the output of rectification circuit 101, indoor control circuit (MCU) 112 and the above-mentioned motor interior substrate that uses microcomputer supplied with in the control of control power supply circuit 111 outputs with operation voltage.Indoor control circuit 112 will be supplied with the control circuit 106 of motor interior substrate according to the revolution setting data of various input data.
Rectification circuit 101, smmothing capacitor 102, control power supply circuit 111 and indoor control circuit 112 etc. are loaded on the indoor printed base plate in the control assembly case.Be connected by 122,2 data 123 of 121,2 control power supply lines of 2 direct current supply lines between this indoor printed base plate and the motor interior substrate.
In such motor drive, use Hall element 105a, 105b, 105c for the detection rotor position, can cause cost and rise.Therefore, in recent years, begin to adopt no position detecting element and utilize the vector controlled (for example No. 3672876 communiques of Japan Patent) of inferring the position of rotation and the drive motor of motor according to the vector calculus of flowing through the electric current of motor winding.
But, when carrying out the vector controlled of fan motor, need carry out far being complex calculations/control than the drive unit of the rotor-position detecting element that has possessed Hall element etc., thus must the high performance microcomputer of use etc. electronic unit as the driving control circuit.Therefore, the problem of existence is except the indoor control circuit that uses microcomputer, also to need the vector controlled microcomputer of 1 Duct-Burning Turbofan.
Therefore, consider that employing merges and the scheme of a microcomputer of the vector control function of holding chamber inner control circuit function and fan motor.When as installing microcomputer being loaded into the motor interior substrate, many wiring by the various indoor control usefulness beyond the motor of indoor control circuit implementation were connected on the motor interior substrate originally, and unrealistic in the past but at this moment.In addition, also exist the on-stream temperature of motor interior substrate to raise, damage the possibility of microcomputer.
As countermeasure, consider microcomputer is loaded into indoor printed base plate side, from the motor interior substrate-side being supplied with the scheme of energising with mode signal here., in this configuration, 6 signal line that mode signal is supplied with usefulness need be set between indoor printed base plate and motor interior substrate.And, on the motor interior substrate, must prepare to be used to detect the detection terminal of winding current of the three-phase part of no sensor dc motor.Therefore, remain on 1 structure in the microcomputer, also exist wiring number between indoor printed base plate and the motor interior substrate to be increased to than more problem before this even adopt function with the function of indoor control circuit and the vector controlled of fan motor to merge.
Summary of the invention
The purpose of a kind of form of the present invention is to consider above-mentioned situation, not rotor-position detecting element is provided, and, does not worry damaging microcomputer again with 1 microcomputer, do not cause the increase of wiring number, can suitably drive the air regulator of no sensor dc motor.
The air regulator of a kind of form of the present invention comprises:
Indoor fan;
Has no sensor dc motor a plurality of windings, that drive described indoor fan;
Utilization generates the microcomputer of the energising of described no each winding of sensor dc motor being controlled the mode signal of usefulness based on the vector controlled of the electric current that flows through described no each winding of sensor dc motor;
Utilization is switched the inverter to each winding energising of described no sensor dc motor according to the switch of the mode signal of described microcomputer generation; With
Be provided with the indoor printed base plate of described microcomputer and described inverter.
Description of drawings
Fig. 1 decomposes the pie graph of the indoor set housing that an example of the present invention is shown.
Fig. 2 illustrates the block diagram of the circuit of the indoor set in the example.
Fig. 3 illustrates the pie graph of the circuit of air regulator in the past.
The specific embodiment
An example of the present invention is described with reference to the accompanying drawings.
As shown in Figure 1, installing plate 1 is fixed in indoor wall, and back plate 2 is affiliated to and is fixed on the installing plate 1.Then, the inboard of back plate 2 is provided with the indoor fan 3 that cross flow fan constitutes with the shape of growing crosswise.Indoor fan 3 one ends promptly do not have sensor dc motor (yet claiming the brushless DC motor) 3M by fan motor and are supported that the other end is supported by bearing 3a.On the back plate 2 and then heat exchanger 4 is set makes its embracing chamber internal fan 3, header board 5 is set with the state of cover heating interchanger 4.Header board 5 is provided with decorative panel 6, and filter 7 loading and unloading are contained between header board 5 and the decorative panel 6 freely.Then, the blowing mouth in the bottom of bottom that is formed at header board 5 and decorative panel 6 is provided with vertical louver plate 8 and horizontal shutter board 9.In addition, at the fan motor 3M sidepiece of back plate 2, adorning control assembly case 50.
Formation and the control assembly case 50 of utilization from these installing plates 1 to horizontal shutter board 9 constitutes indoor set, and various circuit are contained in this control assembly case 50.Fig. 2 illustrates the indoor printed base plate 40 and the peripheral circuit thereof of accommodating in the control assembly case 50.
Inverter 20 connects commercial ac power source 10 through rectification circuit 11, and the U phase winding Lu of no sensor dc motor 3M, V phase winding Lv, W phase winding Lw are connected to the output of inverter 20 through connector 13.Inverter 20 is that using according to the switch of control part described later 30 controls is the alternating voltage of assigned frequency and the circuit of output with the dc voltage conversion of rectification circuit 11 outputs, constitute by following each several part: drive circuit 21, has for example MOSFET22u+ of 6 switch elements, 22u-, 22v+, 22v-, 22w+, 22w-on-off circuit, insert the MOSFET22u+ of on-off circuit, current detecting in 22u-series circuit resistance 23u, insert the MOSFET22v+ of on-off circuit, current detecting in 22v-series circuit resistance 23v, the MOSFET22w+ of insertion on-off circuit, current detecting in 22w-series circuit resistance 23w.The mode signal that drive circuit 21 is supplied with according to control part described later 30 carries out open and close to each MOSFET of on-off circuit and drives.Be connected by 6 signal line (wiring) R1 between drive circuit 21 and the on-off circuit.Be connected by 3 live wire (wiring) R2 between inverter 20 and the no sensor dc motor 3M.On current detecting resistance 23u, 23v, 23w, produce the voltage of the level corresponding with the electric current that flows through no sensor dc motor 3M winding L u, Lv, Lw.
Control power supply circuit 12 is connected to the output of above-mentioned rectification circuit 11, supplies with the power supply terminal of use control of microcomputer portion (MCU) 30 and the drive circuit 21 of above-mentioned inverter 20 from the control of control power supply circuit 12 outputs with operation voltage Vdd.At this moment, the minus side of the power supply terminal of control part 30 connects the minus side power supply of inverter 20.Therefore, control part 30 is shared with the minus side of inverter 20, and control part 30 is taken into the voltage that directly produces at current detecting resistance 23u, 23v, 23w, can it be read as magnitude of voltage by inner A/D mapping function.
Connect display part 31, indoor/outdoor telecommunication circuit 32, shutter board drive circuit 33, light receiver 34 on the control part 30, and connect the drive circuit 21 of inverter 20 and current detecting with resistance 23u, 23v, 23w.Display part 31 shows the various information of relevant indoor set running.Indoor/outdoor telecommunication circuit 32 is carried out the data transmit-receive between control part 30 and the off-premises station (not shown).Shutter board drive circuit 33 drives the shutter board motor 9M that above-mentioned shutter board 9 is driven.Light receiver 34 receives the infrared ray that remote formula operator (being also referred to as remote controller) 35 sends.6 signal line (wiring) R3 that supplies with usefulness with mode signal between control part 30 and the drive circuit 21 is connected.
Control part 30 is according to the voltage that produces with resistance 23u, 23v, 23w in current detecting respectively, winding L u, the Lv of no sensor dc motor 3M, the electric current of Lw are flow through in detection, utilization generates winding L u, the Lv to no sensor dc motor 3M, the energising control mode signal of Lw based on this vector controlled that detects electric current, and control from the reading of the infrared ray of above-mentioned remote controller 35, and the data transmit-receive of off-premises station, to the exercises of this indoor set of the driving instruction of shutter board motor 9M etc.
Rectification circuit 11, inverter 20, control power supply circuit 12, control part 30, indoor/outdoor telecommunication circuit 32, shutter board drive circuit 33 etc. all are contained on the indoor printed base plate 40.This indoor printed base plate 40 is contained in the control assembly case 50.
Control assembly case 50 has the path by the wind of the running generation of indoor fan 3, printed base plate 40 in the reception room, make the wind upstream side that 30 pairs of control parts on the indoor printed base plate 40 should path, the wind downstream of the inverter 20 corresponding paths on the indoor printed base plate 40.
As mentioned above, utilize vector controlled to generate winding L u, the Lv to no sensor dc motor 3M, the energising control mode signal of Lw, and the control part 30 of this indoor set action of control is set, by adopting microcomputer, can suitably drive no sensor dc motor 3M with 1 microcomputer as control part 30.
Because control part 30 is located on 1 indoor printed base plate 40 with inverter 20, the wiring of drawing from indoor printed base plate 40 only is the live wire R2 between inverter 20 and the no sensor dc motor 3M.By cutting down the wiring of drawing, can reduce The noise, and realize the reduction of cost from indoor printed base plate 40.
Owing to control part 30 is not loaded on such in the past airtight motor interior substrate, so needn't worry to cause the damage of control part 30 because of heat.
In addition, in indoor printed base plate 40, separate the " loaded " position of control part 30 and the position of connector 13 as far as possible, with microcomputer, be that control part 30 is arranged on the position of leaving live wire R2 between inverter 20 and the no sensor dc motor 3M.So, the noise that live wire R2 produces is difficult to arrive accurate electronic unit control part 30, and this point also can be avoided abending or misoperation, makes often action stably of control part 30.
Owing to be to utilize based on generating winding L u, the Lv to no sensor dc motor 3M, the structure that the mode signal of usefulness is controlled in the Lw energising with the vector controlled that resistance 23u, 23v, 23w catch the current value of each the motor winding that flows through by current detecting, so such in the past rotor-position detecting element is not realized the decline of cost.Needn't worry the misoperation that the fault because of the rotor-position detecting element causes.
Because what be that the running of indoor fan 3 produces distinguished and admirablely goes into control assembly case 50, control part 30 is in the wind upstream side of ventilating path, inverter 20 is in the structure in wind downstream, so not touch controls of heat portion 30 that each MOSFET of inverter 20 and each current detecting are sent with resistance, do not stagnate in the control assembly case 50 yet, and discharged effectively.So, control part 30 can operating stably, increases substantially the reliability of control.And, by guaranteeing the good aeration of control assembly case 50, can realize reducing in the relative chamber hear resistance specification of loading part on the printed base plate.This can cause the reduction of component costs.
Because the minus side of the power supply terminal of control part 30 is connected on the minus side power line of inverter 20, so simplified the circuit structure that is used for current detecting that is made of with resistance 23u, 23v, 23w current detecting.This point also can reduce The noise, improves the reliability of control.
In the above-mentioned example, adopted the structure of current detecting being inserted each series circuit of inverter 20 with resistance 23u, 23v, 23w, but also can be as shown in phantom in Figure 2, employing is inserted current detecting in the minus side power line of inverter 20 with resistance 24, the voltage supply control part 30 that will produce with resistance 24 in current detecting detects the structure of the electric current of the winding L u, the Lv that flow through no sensor dc motor 3M, Lw.
The invention is not restricted to above-mentioned example, in the scope that does not change purport, can carry out various distortion and implement.
Industrial practicality
The present invention can be used for possessing in the air regulator of no sensor dc motor of drive chamber's internal fan.

Claims (3)

1. an air regulator is characterized in that, comprising:
Indoor fan;
No sensor dc motor, this no sensor dc motor has a plurality of windings, drives described indoor fan;
Microcomputer, the vector controlled of this microcomputer by carrying out based on the electric current that flows through described no each winding of sensor dc motor, generation is at the mode signal of the energising control usefulness of described no each winding of sensor dc motor, and described microcomputer is also controlled the action of described indoor set;
Inverter, this inverter carries out switch by the mode signal that generates according to described microcomputer, switches the energising for described no each winding of sensor dc motor;
Indoor printed base plate, described microcomputer and described inverter all are arranged on this indoor printed base plate;
Indoor set, described indoor set is accommodated described indoor fan;
Connect the wiring that described inverter and described no sensor dc motor are used;
Described microcomputer on the described indoor printed base plate is located on the position of leaving described wiring.
2. air regulator as claimed in claim 1, it is characterized in that, also comprise the electric part box of accommodating described indoor printed base plate, this electric part box has the running that utilizes described indoor fan and the path of the wind that produces, microcomputer on the described indoor printed base plate is positioned at the wind upstream side of this path, and the inverter on the described indoor printed base plate is positioned at the wind downstream of described path.
3. air regulator as claimed in claim 1 or 2 is characterized in that, described microcomputer has the power supply terminal of the DC voltage that input action uses, and the minus side of this power supply terminal connects the minus side power line of described inverter.
CN2007800149207A 2006-05-17 2007-05-16 Air conditioner Active CN101432577B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP138100/2006 2006-05-17
JP2006138100 2006-05-17
PCT/JP2007/060036 WO2007132889A1 (en) 2006-05-17 2007-05-16 Air conditioner

Publications (2)

Publication Number Publication Date
CN101432577A CN101432577A (en) 2009-05-13
CN101432577B true CN101432577B (en) 2011-08-03

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CN2007800149207A Active CN101432577B (en) 2006-05-17 2007-05-16 Air conditioner

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CN (1) CN101432577B (en)
WO (1) WO2007132889A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5829414B2 (en) * 2011-03-29 2015-12-09 三菱電機株式会社 Air conditioner indoor unit
JP6194466B2 (en) 2013-04-11 2017-09-13 パナソニックＩｐマネジメント株式会社 Motor drive device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3328270B2 (en) * 2001-08-20 2002-09-24 株式会社日立製作所 Electric motor and air conditioner
JP3672876B2 (en) * 2002-02-26 2005-07-20 株式会社東芝 Vector control inverter device and rotary drive device
JP4330349B2 (en) * 2003-02-10 2009-09-16 東芝キヤリア株式会社 Air conditioner

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WO2007132889A1 (en) 2007-11-22
CN101432577A (en) 2009-05-13
JPWO2007132889A1 (en) 2009-09-24

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