CN1075541A - The demand control device of air conditioner - Google Patents
The demand control device of air conditioner Download PDFInfo
- Publication number
- CN1075541A CN1075541A CN93101371A CN93101371A CN1075541A CN 1075541 A CN1075541 A CN 1075541A CN 93101371 A CN93101371 A CN 93101371A CN 93101371 A CN93101371 A CN 93101371A CN 1075541 A CN1075541 A CN 1075541A
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- ability
- signal
- motor compressor
- control device
- 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.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
-
- 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
Landscapes
- Air Conditioning Control Device (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The demand control device of air conditioner of the present invention has ability changeable type motor compressor, controlling according to the size of load, when changing the ability of motor compressor, signal controlling reduces the ability of motor compressor according to demand, automatically generates desired signal at predefined date and time.
By automatically carrying out demand control, can make main breaker leave surplus, thereby can use other electrical equipment.
Description
Reduce the air conditioner of the power consumption of air conditioner when the present invention relates to carry out demand control.
The demand control that has earlier, the control device that has special public clear 62-48457 communique to deliver.The demand control device that this communique is delivered is to give the alarm when power consumption surpasses rated power, and alert operator is carried out certain operation.
Prior art according to this configuration is to give the alarm when power consumption surpasses rated power, so the user must carry out demand control according to alarm.
But, when the user not the time or other work of WKG working can not leave the time, operation will be incured loss through delay.
Therefore, purpose of the present invention is intended to overcome this shortcoming, and a kind of demand control device that can automatically carry out demand control as required before giving the alarm is provided.
The present invention is in the ability of the change motor compressor that has ability changeable type motor compressor and control according to the size of load, signal is controlled according to demand, in the air conditioner with the ability that reduces motor compressor, the control device that automatically generates desired signal at predefined date and time is installed.
In addition, be provided with and obtain signal to generate the control device of desired signal by general telegraph circuit.
Simultaneously, also be provided with the control device that generates desired signal according to the signal on the electric power that is superimposed upon the AC power supply.
In addition, when the present invention controls, changes the ability of motor compressor at the motor compressor with ability changeable type and according to the size of load, detect current value and control the ability that reduces motor compressor in view of the above, be provided with the control device that automatically reduces above-mentioned setting value at predefined date and time so that this current value is no more than in the air conditioner of setting value.
The demand control device of the air conditioner of said structure can reduce power consumption, thereby can use other electric equipments before power consumption surpass rated power.
In addition, can also be according to the signal that obtains by general telegraph circuit or the power transmission line signal that causes the demand, thus carry out demand control according to external signal.
Fig. 1 is the indoor wiring diagram of embodiments of the invention;
Fig. 2 is the mnemocircuit figure of indoor unit for air conditioner shown in Figure 1;
Fig. 3 is the mnemocircuit figure of air conditioner outdoor unit shown in Figure 1;
Fig. 4 is the key diagram during according to the current sinking frequency of amendment;
Fig. 5 is the flow chart of the main action of expression indoor unit;
Fig. 6 is the expression demand datagram of the zero hour;
Fig. 7 is the flow chart of the main action of expression outdoor unit;
Fig. 8 is the indoor wiring diagram of other embodiments of the invention;
Fig. 9 is the indoor wiring diagram of other embodiments of the invention.
The 2-main breaker
3-6-divides breaker
15, the indoor unit of 17-air conditioner
16, the outdoor unit of 18-air conditioner
Below, with reference to the description of drawings embodiments of the invention.Fig. 1 is an indoor wiring diagram, among the figure, and the 1st, supply with the power transmission line of alternating current (for example single-phase alternating current of 100v) by Utilities Electric Co., the 2nd, main breaker when the electric current that flows through this breaker for example reaches 50A, cuts off circuit.3-6 is the branch breaker, when the electric current that flows through them reaches 20A, cuts off corresponding circuit respectively.
The 7th, electric cooker (maximum consumption power 1000W), the 8th, micro-wave oven (maximum consumption power 1300W), the 9th, illumination A(maximum consumption power 60W), obtain electric power from minute breaker 3.
The 10th, electric heat mat (maximum consumption power 500W), the 11st, television set (maximum consumption power 200W), 12-14 are respectively illumination B, C, D(maximum consumption power 60W), by minute breaker 4 supply capabilities.
The 15th, air conditioner A(maximum consumption power 2000W), have outdoor unit 16.This air conditioner A is by minute breaker 5 supply capabilities.
The 17th, air conditioner B(maximum consumption power 2000W), have outdoor unit 18.This air conditioner B is by minute breaker 6 supply capabilities.
Fig. 2, Fig. 3 are that air conditioner A(air conditioner B shown in Figure 1 also has identical structure) the mnemocircuit schematic diagram.The circuit diagram of Fig. 2, Fig. 3 is connected with 23 by terminal plate 22.In Fig. 2, the 24th, power transmission line, the 25th, order wire.
This circuit diagram comprises rectification circuit 27, motor power circuit 28, control power supply circuit 29, motor-drive circuit 32, switch substrate 33, recipient 35, display board 36 and stepper motor (M
2) 37.27 pairs of rectification circuits are connected with branch breaker 5 shown in Figure 1 by plug 26() the interchange 100V voltage supplied with carries out rectification; Motor is with the signal of power circuit 28 according to microprocessor 31, dc fan motor (the brushless electric machine) (M that is added in to indoor transporting cold wind and warm wind
1) dc voltage conversion on 30 is 10-36V; Control power supply circuit 29 is used for taking place the used 5V DC voltage of microprocessor; Motor-drive circuit 32 is used for carrying out the signal that computing is obtained according to microprocessor 31 according to the rotation position information of dc fan motor, and control to the stator coil energising of dc fan motor 30 regularly; Switch substrate 33 is provided with on/off (ON/OFF) switch, test running switch etc.; Recipient 35 is used for accepting the straighforward operation signal (on/off signal, cold air/heating installation switching signal, setting value at room temperature signal etc.) of Digiplex 34; Display board 36 is used for showing the operating condition of air conditioner; Stepper motor (M
2) 37 be used for driving air door, to change the blow-off direction of cold wind and warm wind.
In addition, the heat-exchanger temperature sensor 39 of the temperature that also be provided with the temperature sensor 38 that detects room temperature, detects the use side heat exchanger and detect the illuminance transducer 40 of indoor illumination intensity, the detected value of these sensors reads in microprocessor 31 after the A/D conversion.In addition, the control signal of 31 pairs of outdoor units of microprocessor transmits by 3 of serial circuit 41,42 and terminal plate 22.The 43rd, deposit the auxiliary ROM of various data.
The 20th, obtain the interface circuit of desired signal from the outside, it sends desired signal to microprocessor 31.
When input during desired signal or when having arrived predefined Date Required and time (or constantly), to the signal of outdoor unit export-restriction maximum current.Date Required and time or demand constantly can utilize Digiplex 30 to set.
Fig. 3 is the mnemocircuit figure of outdoor unit 16.In this circuit diagram, the 23rd, terminal plate, this terminal plate are provided with respectively the terminal 1-3 that is connected with the terminal 1-3 of the terminal plate 22 of indoor unit.The 43rd, the rheostat that is connected in parallel, the 44th, noise filter, the 45th, reactance coil, the 46th, voltage-multiplying circuit, the 47th, noise filter, the 48th, smmothing capacitor, be used for times voltage that smoothly takes place, in order to obtain the DC voltage of about 280V from the alternating voltage of 100V by voltage-multiplying circuit 46.
The 49th, the serial circuit that will carry out the signal conversion in order to sending microprocessor 50 to by the control signal (frequency values etc.) of the indoor unit of terminal 3 input of terminal plate 23, the 51st, current detection circuit, it supplies with microprocessor 50 to the electric current of supplying with outdoor unit after current transformer (CT) 52 detects and smoothly is DC voltage, the 53rd, switching power circuit is used for taking place the supply voltage of microprocessor 50 usefulness and the supply voltage of dc fan motor 54 usefulness.The 55th, motor-drive circuit wants it according to the control signal of microprocessor 50 PWM control to be carried out in the energising of described compressor 1 rearwards, and 6 power transistors connect into three-phase bridge circuit shape, constitute so-called converter device.The 56th, the discharge temperature sensor of the refrigerant temperature of detection compressor air-discharging end.
The 58th, voltage controller is used for controlling the DC voltage that is added on the dc fan motor 54, changes the voltage that is added on the dc fan motor 54 according to the signal of microprocessor 50.The 59th, circuit for controlling electricity turning, it is switched on the DC voltage order of voltage controller 58 outputs to the stator coil of dc fan motor 54, rotary angle transmitter 60 detects the rotational angle of dc fan motor 54, according to this rotational angle, the energising of carrying out stator coil according to the break-make switching signal of microprocessor 50 outputs is switched.
Therefore, pass to the signal of voltage controller 58, just can change the revolution of dc fan motor 54 by change.In addition, this dc fan motor 54 is used for heat exchanger 4 air-supply of heat source one end.
61, the 62nd, electronic switch (semiconductor three terminal bidirectional switch element etc.) is respectively according to the energising to cross valve and magnetic valve of the signal controlling of microprocessor 50.
In addition, outdoor unit also is provided with the heat-exchanger temperature sensor 64 of the outer gas sensor 63 that is used to detect near the outer temperature degree air entry and the temperature of the heat exchanger that is used to detect thermal source one end, and the detected value of these sensors 63,64 reads in microcomputer 50 after the A/D conversion.
The 65th and the auxiliary ROM43 of indoor unit device have the ROM of identical function, the same with to auxiliary ROM43 explanation, it is used for depositing the inherent data of outdoor unit.
The action of the outdoor unit of said structure mainly is in order to a three-phase alternating voltage supply compressor by indoor unit gained frequency values.Obtain the method for the three-phase alternating voltage of assigned frequency value, can adopt the PWM(pulse width modulation of generally using) mode, details is omitted.
Therefore, the frequency values that sends according to indoor unit 15 changes the running ability of compressor, thereby can carry out ability and the operation of air conditioner of loading and adapting.
Usually, along with the running ability that compressor is in high loaded process and increases compressor, the power consumption of compressor increases.In other words, light hours or running ability hour, the power consumption of compressor reduces.
Air conditioner A15 obtains electric power by minute breaker 5.When this minute, the electric current that flows through of breaker 5 was greater than 20A, with circuitry cuts, so there is such problem in air conditioner A15, promptly when the electric power that consumes greater than 20A(2000W) time, circuit will disconnect, make the operation of air conditioner interruption.Therefore, in the present embodiment, detect the electric current that flows through compressor with current transformer 52, and by current detection circuit 51 input microprocessor 50, reduce the control of the ability (supplying with the frequency of the alternating voltage of compressor) of compressor, make this electric current be no more than 20A.
Fig. 4 is the key diagram during according to the detected value frequency of amendment value of current detector 52.In Fig. 4, " NORMAL " is the zone of not carrying out the frequency values correction, and " DOWN " is by 1
HZ/socSpeed reduce the zone that frequency values is revised, " TRIP " makes compressor stop the zone of (frequency values is reduced to OHZ).Set current value I
tConsistent with the action current of minute breaker 5, be set at I
t=19.5A(has considered the power consumption of other equipment such as fan electromotor), set current value I
sBe set at I
s=19.0A.This sets current value I
sAccording to the signal of indoor unit, can change to I
s=15.0A, I
s=12.0A.
In addition, in Fig. 4, electric current carries out differential setting in " DOWN " zone and " NORMAL " zone when ascent direction changes and when descent direction changes.
Therefore, be at electric current during " DOWN " zone, reduce and the frequency of amendment value, the current sinking of microprocessor 50 control compressors is no more than I
sValue.
Fig. 5 is the flow chart of main action of the indoor unit of expression air conditioner A15.Among the figure, when the action of microprocessor 31 begins, carry out the initialization of microprocessor 31 at S1 earlier.Then, judge whether the data that receive from remote controller 34, when data are arranged, upgrade each data value at S3 at S2.The data of demand zero hour when automatic demand control is carried out in ON/OFF data, the expression of the automatic demand control of time data (having the function of automatically carrying out demand control at predefined date and time) when these data have data, the timer running of on/off (ON/OFF) data, setting value at room temperature data, room temperature data, the decision indoor fan air output of air conditioner, represent this demand data of the zero hour as shown in Figure 6 are set at 12 types of A-L.
Data A is the data of frequent reference when carrying out the control of automatic demand, as examples of implementation, 5: 00-7: between 00 (morning, the time of electric cooker action) set.Data B is the data of reference on Sunday, and data C is the data of reference on Monday, below, data D, data E, data F, data G, data H are respectively the data of Tuesday, three, four, five, six references.Data B and data H do not set, and G is 17 for data C-data: 00-19: (the time band of supper) set between 00.Data I-data L is data of specifying the moon day reference, and for example, data I is 13: 00-15: set between 00, specify a month day to be 1-August 31 August (being the peak period of power consumption in summer during this).
Judge the time band that carries out demand control during therefore, according to the present moon day.For example, if then be with promptly 5 in the time of data A and data G combination: 00-7: 00 and 17: 00-19 January 31 (Friday): 00 carries out twice demand control.In addition, if be that present moment is 5 if be with: 00-7: 00,13: 00-15 August 1 (Sunday) in the time of data A, data B, data I combination: 00, then carry out demand control.Described in the back S6, S7 judge whether to carry out this demand control.
In Fig. 5, judge whether to give outside desired signal at S4 by interface circuit 20, if when giving desired signal, enter S8.Judge at S5 whether automatic demand for control formula gave ON data by remote controller, judge whether to carry out demand control at S6, S7.When carrying out demand control, enter S8.
Judge at S8 whether the Current Control value ID given by remote controller is ID=19, when being ID=19, is set at IS=15 at S9, ID ≠ 19 o'clock are set at IS=12.In addition, when not carrying out demand control, be set at ID=IS at S11.
Therefore, when carrying out demand control, current setting value can be reduced.
Go out the compressor capacity of the necessity that adapts to load, i.e. frequency value F at S12 by room temperature data and setting value at room temperature data computation.These computational methods have PID control and fuzzy control etc.
At S13 data such as IS value, frequency value F are sent to outdoor unit.After S14 carries out other controls (revolution of fan and timer running etc.), get back to S1 once more.
Fig. 7 is the flow chart of the main action of expression microprocessor 50 shown in Figure 3.Among the figure, carry out the initialization of microprocessor 50 at S21 earlier,, judge whether to receive the data of indoor unit then at S22.When receiving data, enter S23, with each setting value of data change of accepting.At this moment, if the value of current setting value IS has change, also can change.That is, when indoor unit has been judged demand control, just set the current setting value of outdoor unit less than common setting value.
At S24, judge that whether the electric current that current transformer 52 detects is in the zone (whether being in the zone of TRIP or DOWN shown in Figure 4) that need carry out Current Control, in the time of need carrying out Current Control, enters S25, with 1
HZ/scoSpeed reduce value after the actual output frequency, until removing the condition that need carry out Current Control.When not needing to carry out Current Control, enter S26, will be set at actual output frequency F by the frequency value F that indoor unit sends
0
At S27, be F according to the theoretical generated frequency of PWM
0Three-phase alternating current and supply with compressor.At S28, carry out other control (controls of the revolution of outdoor fan, the aperture of electric expansion valve, defrosting etc.) after, get back to S22 once more.
Use the air conditioner A(and the air conditioner B of said structure) time, be controlled to be ON if set automatic demand with remote controller, for example, in above-mentioned January 31 (Friday), in the morning 5: 00-7: carry out demand control between 00, the Current Control value I of air conditioner A, B
sBe restricted to 15A.Therefore, when air-conditioning in the morning began, the common consumed current total of air conditioner A, B was no more than 30A.So, main breaker 2 is had the surplus of 20A, so available this 20A uses electric cooker, air conditioner A, B, electric cooker etc. regularly turn rounds after, even 5: 00-7: starting simultaneously between 00 can not make main breaker 2 move yet.
Equally, at night 17: 00-19: 00 supper is in time, also can control to such an extent that the current sinking of air conditioner A, B can not surpass 30A, so, use electric cooker and micro-wave oven etc. also can not make main breaker 2 actions.
That is, in using the time band of other electrical equipment, automatically reduce the power consumption of air conditioner, just can suitably distribute electric power to other electrical equipment.Therefore, can not increase the capacity of main breaker 2 and use air conditioner and other electrical equipment simultaneously.
Fig. 8 is the indoor wiring diagram of other embodiments of the invention.Modem 81, phone 82, desired signal line 83,84, pay station line 85 on indoor wiring diagram shown in Figure 1, have been appended.When modem 81 obtained the control signal of appointment by pay station line 85, interface circuit by desired signal line 83,84 and air conditioner A15, B17 20 sent desired signal to microprocessor.During air conditioner A, B input desired signal, carry out the control of the demand formula and (reduce current setting value I
s).
Therefore, via the desired signal that pay station line 85 obtains from the outside, reduce the running ability of air conditioner by response.For example, when the electric power of Utilities Electric Co. was needed sharply to increase, Utilities Electric Co. can control the revolution electric current of air conditioner by pay station line demand and supply signal, so, can reduce total electricity demand to Utilities Electric Co..
Fig. 9 is the indoor wiring diagram of other embodiments of the invention.Filter circuit 91, signal deteching circuit 92, holding wire 93,94 on indoor wiring diagram shown in Figure 1, have been appended.Filter circuit 91 is high-pass filters, and the high-frequency signal that is superimposed upon on the power line is separated.Signal detector 92 is supplied with desired signal by interface circuit the microprocessor of holding wire 93,94 and air conditioner A15, B17 when judging that this high-frequency signal is the signal of appointment.Two air conditioners signal according to demand reduce current setting value I
sValue.That is, reduce the running ability of air conditioner.
In addition, when the electric power of Utilities Electric Co. is needed sharply to increase, for example can high-frequency signal be added on the power line by Utilities Electric Co..
As mentioned above, the demand control of air conditioner of the present invention, in motor compressor with ability changeable type and the air conditioner of ability according to the big or small control break motor compressor of load, automatically export desired signal at predefined date and time, so, just automatically reduce the power consumption of motor compressor at this date and time, thereby can in this time, use other electrical equipment.That is, contract capacity can be do not increased, and the electrical equipment quantity of using simultaneously can be increased with Utilities Electric Co.'s signing.
In addition, can obtain desired signal by pay station line and power line, so, can reduce the use electric current of air conditioner according to the signal of outside, in the middle of 1 year, the noon in summer (the 7-8 month) (12: 00-14: 00),, can alleviate the electric power requirement of this time band that needs maximum at electric power by giving desired signal from the outside.
Claims (4)
1, the demand control device of air conditioner is characterised in that: have ability changeable type motor compressor and controlling according to the size of load, when changing the ability of motor compressor, signal is controlled according to demand, reduce to have the control device that automatically generates desired signal at predefined date and time in the air conditioner of ability of motor compressor.
2, the demand control device of air conditioner is characterised in that: when controlling, changing the ability of motor compressor at the motor compressor with ability changeable type and according to the size of load, detect current value and control the ability that reduces motor compressor in view of the above, have the control device that automatically reduces above-mentioned certain value at predefined date and time so that this current value is no more than in the air conditioner of certain value.
3, the demand control device of air conditioner is characterised in that: when controlling, changing the ability of motor compressor at the motor compressor with ability changeable type and according to the size of load, signal is controlled in the air conditioner of the power consumption upper limit that reduces motor compressor according to demand, is provided with the control device that generates desired signal according to the signal that obtains by pay station line.
4, the demand control device of air conditioner is characterised in that: in the running ability of power-actuated motor compressor of being supplied with by AC power according to the size control of load, signal is controlled in the air conditioner of the power consumption upper limit that reduces motor compressor according to demand, is provided with the control device that generates desired signal according to the signal on the electric power that is superimposed upon the AC power supply.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25345/92 | 1992-02-12 | ||
| JP04025345A JP3086523B2 (en) | 1992-02-12 | 1992-02-12 | Demand control device for air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1075541A true CN1075541A (en) | 1993-08-25 |
| CN1070604C CN1070604C (en) | 2001-09-05 |
Family
ID=12163297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93101371A Expired - Fee Related CN1070604C (en) | 1992-02-12 | 1993-02-09 | Air-conditioner controller |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3086523B2 (en) |
| KR (1) | KR0155395B1 (en) |
| CN (1) | CN1070604C (en) |
| TW (1) | TW198092B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419435B (en) * | 2007-10-24 | 2011-04-20 | Lg电子株式会社 | Demand controller for electric system |
| CN106996617A (en) * | 2017-03-21 | 2017-08-01 | 广东美的制冷设备有限公司 | Air conditioner and its progress control method |
| CN107289591A (en) * | 2017-06-30 | 2017-10-24 | 广东美的制冷设备有限公司 | Control method, control system, air conditioner and the computer installation of air conditioner |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010175098A (en) * | 2009-01-28 | 2010-08-12 | Mitsubishi Electric Corp | Demand control system of air conditioner |
| JP5677198B2 (en) * | 2011-05-27 | 2015-02-25 | 三菱電機株式会社 | Air cooling heat pump chiller |
| FR2976654B1 (en) * | 2011-06-15 | 2013-07-12 | Voltalis | DEVICE FOR HEATING, VENTILATION AND / OR AIR CONDITIONING WITH TARGETED FEED MANAGEMENT. |
| CN102538144B (en) * | 2012-02-14 | 2014-04-16 | 美的集团股份有限公司 | Multi-connected air-conditioning unit control method |
| JP6616233B2 (en) * | 2016-04-28 | 2019-12-04 | ダイキン工業株式会社 | Heat pump system and power limiting system provided with the same |
-
1992
- 1992-02-12 JP JP04025345A patent/JP3086523B2/en not_active Expired - Fee Related
- 1992-09-10 TW TW081107151A patent/TW198092B/en active
-
1993
- 1993-02-09 CN CN93101371A patent/CN1070604C/en not_active Expired - Fee Related
- 1993-02-10 KR KR1019930001767A patent/KR0155395B1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419435B (en) * | 2007-10-24 | 2011-04-20 | Lg电子株式会社 | Demand controller for electric system |
| CN106996617A (en) * | 2017-03-21 | 2017-08-01 | 广东美的制冷设备有限公司 | Air conditioner and its progress control method |
| CN107289591A (en) * | 2017-06-30 | 2017-10-24 | 广东美的制冷设备有限公司 | Control method, control system, air conditioner and the computer installation of air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| KR930018233A (en) | 1993-09-21 |
| KR0155395B1 (en) | 1999-01-15 |
| CN1070604C (en) | 2001-09-05 |
| TW198092B (en) | 1993-01-11 |
| JP3086523B2 (en) | 2000-09-11 |
| JPH05223313A (en) | 1993-08-31 |
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