CN2588429Y - One-driving-three central air conditioner controller - Google Patents
One-driving-three central air conditioner controller Download PDFInfo
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- CN2588429Y CN2588429Y CN 02260893 CN02260893U CN2588429Y CN 2588429 Y CN2588429 Y CN 2588429Y CN 02260893 CN02260893 CN 02260893 CN 02260893 U CN02260893 U CN 02260893U CN 2588429 Y CN2588429 Y CN 2588429Y
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Abstract
The utility model relates to a one-driving-three central air conditioner controller which is used for controlling a small central air conditioner system. The controller comprises a 25 A indoor wall hanging air conditioner controller, a 25 B indoor wall hanging air conditioner controller, a 50 indoor cabinet type air conditioner controller and an AC frequency conversion outdoor air conditioner controller. The controller is characterized in that the one-driving-three central air conditioner controller also comprises an intelligent flow distribution controller which comprises a digital signal processor, a switching power supply circuit connected with the digital signal processor, a running state display circuit, a test function circuit, a communication circuit, a central control panel communication circuit, an electromagnetic valve drive circuit, an electronic expansion valve drive circuit and a temperature detection circuit, wherein the communication circuit is connected with the 25 A indoor wall hanging air conditioner controller, the 25 B indoor wall hanging air conditioner controller, the 50 indoor cabinet type air conditioner controller and the alternating current frequency conversion outdoor air conditioner controller. The controller can be used for completing the key operation of refrigerant flow distribution of one-driving-multiple air conditioning systems, communication, rotational speed control of a compressor, oil return control, etc., and thus, has great practicability.
Description
Technical field
The utility model relates to a kind of air-conditioner controller, relates in particular to one of the high performance-price ratio used in a kind of small central air conditioning system and drags three small central air conditioning control device.
Background technology
That uses in the small central air conditioning system one drags three small central air conditioning control device owing to can promote two indoor wall mounted machines and an indoor clothes closet machine job because of it has only an off-premises station, so it has development prospect because of high performance-price ratio of using.The very good domestic small-sized multi-evaporator inverter air conditioner consumption market of external for this reason many manufacturers, external manufacturer enters Chinese market with various forms one after another, as companies such as the Da Jin of Japan, Toshiba, Sanyo, Hitachis, all sales company or joint venture have been set up in China; Some domestic air-conditioning manufacturers have also introduced advanced foreign technology, and for example " Haier " company and " U.S. " company all are technology of introducing Japanese Toshiba, and other introduce the technology of companies such as Hitachi, Sanyo and the U.S. in addition in addition.But the defective that exists in effective sale and use is:
1. because bringing a high price of prior art small central air conditioning unit makes that the crowd who accounts for the wage-earners hierarchy of consumption of market more than 80 percent is difficult to accept, it is not high to make it sales volume;
2. because prior art small central air conditioning system
To the control of refrigerating/heating and not ideal enough to the control of every indoor set assignment of traffic, making can not fast-refrigerating/heat, and inhomogeneous because of every indoor set assignment of traffic, make it to have influenced overall system efficiency.
Summary of the invention
The purpose of this utility model is to provide a kind of one to drag three small central air conditioning control device, and it has the ability of fast-refrigerating/heat, and can make every indoor set assignment of traffic even, thereby can improve overall system efficiency.
The purpose of this utility model is achieved in that
A kind of one drags three small central air conditioning control device, is used for the control of small central air conditioning system, comprising: the indoor wall mounted machine controller of 25A, the indoor wall mounted machine controller of 25B, 50 indoor cabinet machine controllers, AC frequency conversion outdoor controller; Be characterized in also comprising:
One intelligent flow distribution controller, this intelligent flow distribution controller comprises, digital signal processor, the switching power circuit that is connected with digital signal processor, running status display circuit, test function circuit, communicating circuit, centralized control panel communicating circuit, driving circuit for electromagnetic valve, electronic expansion valve-driving circuit, temperature sensing circuit; Wherein, described communicating circuit is connected with the indoor wall mounted machine controller of 25A, the indoor wall mounted machine controller of 25B, 50 indoor cabinet machine controllers, AC frequency conversion outdoor controller.
Drag in the three small central air conditioning control device above-mentioned one, wherein, described communicating circuit comprises, the communicating circuit I that is connected with the indoor wall mounted machine controller of 25A, the communicating circuit II that is connected with the indoor wall mounted machine controller of 25B, the communicating circuit III that is connected with 50 indoor cabinet machine controllers, the communicating circuit IV that is connected with the AC frequency conversion outdoor controller; Each communicating circuit comprises, the decompression voltage regulator of forming by resistance, electric capacity, stabilivolt, the coupled circuit of forming by Light Coupled Device and resistance, the on-off circuit of forming by transistor and resistance, by the signal path circuitry that diode, Light Coupled Device and resistance capacitance are formed, this signal path circuitry is connected with digital signal processor.
Drag in the three small central air conditioning control device above-mentioned one, wherein, described electronic expansion valve-driving circuit is made up of driving circuit and protecting against shock circuit, this driving circuit is made of the anti-phase drive integrated circult chip that is connected with digital signal processor, and this protecting against shock circuit is made of with two transistors that are connected with digital signal processor four diodes that are connected with anti-phase drive integrated circult chip.
Drag in the three small central air conditioning control device above-mentioned one, wherein, indoor wall mounted machine controller of described 25A or the indoor wall mounted machine controller of 25B comprise: indoor on-hook control circuit, this indoor on-hook control circuit is that the single-chip microcomputer integrated circuit (IC) chip of PICF16873 constitutes by model, be arranged on the transformation rectification circuit and the temperature sensing circuit of control circuit input end, be arranged on communicating circuit, hummer, swing blade motor driving circuit, the blower fan driving circuit of control circuit output terminal; Wherein, described communicating circuit is connected with intelligent flow distribution controller.
Drag in the three small central air conditioning control device above-mentioned one, wherein, described 50 indoor cabinet machine controllers comprise: indoor cabinet-type air conditioner control circuit, this indoor cabinet-type air conditioner control circuit is that the single-chip microcomputer integrated circuit (IC) chip of GP32 constitutes by model, be arranged on the transformation rectification circuit and the temperature sensing circuit of indoor cabinet-type air conditioner control circuit input end, be arranged on communicating circuit, hummer, swing blade motor driving circuit, the blower fan driving circuit of indoor cabinet-type air conditioner control circuit output terminal; Wherein, described communicating circuit is connected with intelligent flow distribution controller.
Drag in the three small central air conditioning control device above-mentioned one, wherein, described AC frequency conversion outdoor controller comprises: the off-premises station control circuit, this off-premises station control circuit is that F2402 digital signal processor integrated circ chip constitutes by model, be arranged on voltage detecting circuit, current detecting electric current, the temperature sensing circuit of off-premises station control circuit input end, be arranged on communicating circuit, pulse-width signal driving circuit, four-way valve driving circuit, blower fan driving circuit, the status display circuit of off-premises station control circuit output terminal;
Described AC frequency conversion outdoor controller is connected with intelligent flow distribution controller by communicating circuit; And be connected with the switching power circuit in the intelligent flow distribution controller.
Drag in the three small central air conditioning control device above-mentioned one, wherein, described switch power supply route switch power module, light-coupled isolation driver module, Intelligent Power Module parts, wherein,
The input end of switch power module is connected with AC power, is used for the AC power of civil power is transformed into each required DC voltage to outdoor control panel;
The input end of this light-coupled isolation driver module is connected with outside drive signal in the outdoor control panel, and output terminal is connected with the input end of driving circuit in the Intelligent Power Module with the output terminal of switch power module;
The input end of this Intelligent Power Module module is connected with an output terminal of light-coupled isolation driver module, and its output terminal is connected with direct current variable frequency motor, is used to control the power drive to the three-phase direct-current brushless motor.
The utility model one drags three small central air conditioning control device owing to adopted above-mentioned technical scheme, makes it compared with prior art, has following advantage and good effect:
1. the utility model is because control device comprises three indoor sets, an off-premises station, an intelligent flow divider, the indoor set off-premises station all is connected to flow distributor, off-premises station is only by an AC frequency conversion driven compressor, therefore can regulate the rotating speed of compressor according to the operating condition of indoor and outdoor machine;
The utility model since the intelligent flow divider can follow according to the operating condition of indoor and outdoor machine regulate electric expansion valve open degree, regulate refrigerant flow automatically, make every indoor set assignment of traffic even, improve overall system efficiency thus;
3. the utility model is owing to be provided with the electronic expansion valve-driving circuit, thereby can make the air conditioner refrigerating agent flux adopt electronic expansion valve controls, flow adjustment range to widen greatly.
4. after adopting the flow flow distributor, communication function improves, drive and exchange that birotor frequency-changeable compressor, system effectiveness improve, noise reduces, and solved a difficult problem of dragging the multisystem oil return, perfect system protection function;
The utility model because have the ability of fast-refrigerating/heat and comfortableness, energy-conservation, etc. characteristics, make it control flexibly, perfect performance, simple and compact for structure; And moderate, provide wage-earners used;
6. the utility model is owing to adopted one to drag three controllers can conveniently realize the control of small central air conditioning system, for people provide a cost performance height, comfortable, high-efficiency reliable small central air conditioning system controller, thus multi-evaporator inverter air conditioner market advanced, thus improve people's living environment.
Description of drawings
By following the utility model one is dragged the description of an embodiment of three small central air conditioning control device in conjunction with its accompanying drawing, can further understand the purpose of this utility model, specific structural features and advantage.Wherein, accompanying drawing is:
Fig. 1 is according to a block scheme that drags three small central air conditioning control device that the utility model proposes;
Fig. 2 is the structural representation that the utility model one drags intelligent flow divider in the three small central air conditioning control device;
Fig. 3 is the electrical schematic diagram that the utility model one drags communicating circuit in the three small central air conditioning control device;
Fig. 4 is the electrical schematic diagram that the utility model one drags electronic expansion valve-driving circuit in the three small central air conditioning control device;
Fig. 5 is the block scheme that the utility model one drags indoor wall mounted machine controller in the three small central air conditioning control device;
Fig. 6 is the block scheme that the utility model one drags indoor cabinet machine controller in the three small central air conditioning control device;
Fig. 7 is the block scheme that the utility model one drags outdoor controller in the three small central air conditioning control device;
Fig. 8 the utility model one drags the block scheme of switching power circuit in the three small central air conditioning control device.
Embodiment
See also shown in Figure 1ly, Fig. 1 is the block scheme that the utility model one drags three small central air conditioning control device.The utility model, one drags three small central air conditioning control device, be used for the control of small central air conditioning system, comprise: the indoor wall mounted machine controller 100 of 25A, indoor wall mounted machine controller 200, the 50 indoor cabinet machine controllers 300 of 25B, AC frequency conversion outdoor controller 500; Unlike the prior art be also to comprise: an intelligent flow distribution controller 400, the indoor wall mounted machine controller 100 of above-mentioned 25A, indoor wall mounted machine controller 200, the 50 indoor cabinet machine controllers 300 of 25B, AC frequency conversion outdoor controller 500 all are connected with intelligent flow distribution controller 400.
Please in conjunction with Fig. 1 referring to shown in Figure 2, Fig. 2 is the structural representation that the utility model one drags intelligent flow divider in the three small central air conditioning control device.Intelligent flow distribution controller 400 in the utility model comprises, one DSP digital signal processor 410, in the present embodiment, what this DSP digital signal processor 410 adopted is that model is the dsp chip (singlechip chip) of F2402, is connected with this DSP digital signal processor 410 with lower member:
Switching power circuit 490 is in order to provide the system works power supply;
Running status display circuit 420, it drags the operation duty of three small central air conditioning devices and fault-signal to reflect in the mode that shows with one;
Test function circuit 430 is in order to carry out and to finish the setting of test function to the utility model;
Communicating circuit 440, in the present embodiment, communicating circuit 440 comprises, the communicating circuit I441 that is connected with the indoor wall mounted machine controller 100 of 25A, the communicating circuit II442 that is connected with the indoor wall mounted machine controller 200 of 25B, the communicating circuit III443 that is connected with 50 indoor cabinet machine controllers 300, the communicating circuit IV444 that is connected with AC frequency conversion outdoor controller 500, thus realize the indoor and outdoor controller is carried out communication;
Centralized control panel communicating circuit 450 carries out communication in order to control panel is operated;
Driving circuit for electromagnetic valve 460 is in order to drive the solenoid valve in the intelligent flow distribution controller device
Electronic expansion valve-driving circuit 470 is in order to drive the solenoid valve in the intelligent flow distribution controller device;
Temperature sensing circuit 480 is in order to detect the temperature of intelligent flow distribution controller device.
In the present embodiment, one drags the 220V power supply of three systems to be connected to flow distributor, is connected to each indoor set controller then; Connecting line comprises two 220V power supplys, reaches a connection, by each controller exchange data signals of connection between each parts; Off-premises station control AC frequency conversion compressor operating; The intelligent flow divider mainly carries out electric expansion valve and drives assignment of traffic; Indoor set is mainly finished functions such as indoor fan driving, liquid crystal display, remote control reception.
Please in conjunction with Fig. 2 referring to shown in Figure 3, Fig. 3 is the electrical schematic diagram that the utility model one drags communicating circuit in the three small central air conditioning control device.In Fig. 2, communicating circuit 440 in the utility model comprises, the communicating circuit I441 that is connected with the indoor wall mounted machine controller 100 of 25A, the communicating circuit II442 that is connected with the indoor wall mounted machine controller 200 of 25B, the communicating circuit III443 that is connected with 50 indoor cabinet machine controllers 300, the communicating circuit IV444 that is connected with AC frequency conversion outdoor controller 500; In Fig. 3, the electrical schematic diagram of communicating circuit II442, communicating circuit IV444 has been done detailed expression.Therefore, communicating circuit I, II, III, IV include with the lower part and form, promptly, the decompression voltage regulator of forming by resistance, electric capacity, stabilivolt, the coupled circuit of forming by Light Coupled Device and resistance, by the on-off circuit that transistor and resistance are formed, by the signal path circuitry that diode, Light Coupled Device and resistance capacitance are formed, this signal path circuitry is connected with DSP digital signal processor 410.
As can be known from Fig. 2, the key function of the intelligent flow device in the utility model is exactly communication, and it must set up intelligent flow distribution controller-indoor set, the annexation of intelligent flow distribution controller-off-premises station.The control chip of intelligent flow distribution controller must be understood the duty of each parts of system and user's instruction, could operate as normal.
Because the smart allocation device is longer to the communication distance of indoor set and off-premises station, if directly connection is coupled together, two leads can be parallel with L, the N of power supply, can enter many logical interference sources, electromagnetic interference (EMI) on the power line can influence the correct transmission of signal, therefore considers to adopt the method for light-coupled isolation in the present embodiment.
Now, be example (seeing shown in Figure 3) with the communicating circuit II442 that is connected with the indoor wall mounted machine controller 200 of 25B, three-way communication is adopted in the forceful electric power communication, two power leads, double as order wire wherein, other adds an order wire.220 AC power form the DC voltage (other communicating circuit also adopts identical principle to obtain each communication power supply) of 24V through R57 step-down, ZD4 current stabilization, C32 filtering, and communication power supply adopts 24V, help eliminating than higher power supply like this and disturb; Electric power couple asynchronous half-duplex operation mode is adopted in indoor and outdoor communication, adopt current drives, utilize the 5V isolated from power of optocoupler and control circuit, the mode of electric current loop can effectively be filtered the accent voltage glitch, and isolated from power has guaranteed that control circuit is not disturbed by external signal.DSP digital signal processor 410 is the break-make of TXD foot control combinations body triode Q4 of the dsp chip (singlechip chip) of F2402 in the intelligent flow divider 400, thereby the light emitting diode break-make of control optocoupler OT7, the light emitting diode break-make of the data-signal control optocoupler OT8 that sends over from the indoor wall mounted machine controller 200 of 25B, then data transmission to the RXD pin.In like manner, other signal is connected to by optocoupler respectively that DSP digital signal processor 410 is input pin IOPC4, IOPC3, the IOPC2 of the dsp chip (singlechip chip) of F2402 in the intelligent flow divider 400: AC frequency conversion outdoor controller 500 signals are connected to IOPC4,50 indoor cabinet machine controllers, 300 signals are connected to indoor wall mounted machine controller 100 signals of IOPC3,25A and are connected to IOPC2.And the transmitting terminal of communicating circuit links together, and received signal is connected respectively to the control chip end.
Adopt the technology of this communication modes key must guarantee to have only on the electric current loop signal transmitting exactly, that is to say, every machine takes turns and intelligent flow distribution controller 400 communications, after a circulation, intelligent flow distribution controller 400 can be understood intrasystem all working state signals, then can be according to the action of indoor set and off-premises station in the signal management system that receives.When a certain machine communication breaks down, other communicating circuit of intelligent flow distribution controller device can continue operate as normal, and each indoor set can receive the machine address that breaks down, and fault shows that the LED lamp sends corresponding warning, works with the convenient for maintaining personnel.
Please in conjunction with Fig. 2 referring to shown in Figure 3, Fig. 4 is the electrical schematic diagram that the utility model one drags electronic expansion valve-driving circuit in the three small central air conditioning control device.Drag in three controllers at the utility model one, because one drags three controller air-conditioning cold flow mobility scales bigger: 1000～10000 watts, for the adaptive system demand, refrigerant flow control adopts the mode of electric expansion valve throttling, to reach the flow of dynamic adjusting system on a large scale, make system effectiveness be controlled at optimum condition.In the utility model, described electronic expansion valve-driving circuit 470 is made up of driving circuit and protecting against shock circuit.Driving circuit is made of the anti-phase drive integrated circult chip that is connected with DSP digital signal processor 410, and in the present embodiment, what this anti-phase drive integrated circult chip adopted is that model is that the anti-phase drive integrated circult chip of MC1413 constitutes; And the protecting against shock circuit is made of with two transistors that are connected with DSP digital signal processor 410 four diodes that are connected with anti-phase drive integrated circult chip, in the present embodiment, two transistor employings is that NPN, PNP transistor are formed complex pipe.
In the present embodiment, because system needs three electric expansion valves, each electric expansion valve has 2 pairs of coils, a power supply input.If adopt the method for control in real time, need many control I/O mouths.System adopts the pretty happy DPF type electric expansion valve that produces in Shanghai, its driving voltage: DC12V, excitation frequency: 30-90PPS, coil resistance: 52 Europe.Considered that the electric expansion valve execution speed is slow, in system, adopted the method for timesharing control, utilize the power input of I/O mouth control electric expansion valve, and the corresponding coil control end of 3 electrovalves share a control I/O, so just saved the I/O mouth of economizing control chip; And because the drive current of electromagnetic valve coil is bigger in the circuit, so power supply control employing 2 NPN, PNP transistors are combined into complex pipe, the increase current driving ability.Chip output pin PA3 is connected to resistance R 30, and R30 provides transistor Q6 as base drive, and the collector of Q6 connects R47.Flow out direction at coil current and added the MC1413 driving chip, increased control end and drawn current capacity.
Electronic Expansion Valve Control is the gordian technique of intelligent flow divider 400: it adopts minimum degree of superheat control, makes system works under safe and reliable state, improves system's heat exchange efficiency simultaneously, improves the Energy Efficiency Ratio of system.
Please in conjunction with Fig. 2 referring to shown in Figure 5, Fig. 5 is the block scheme that the utility model one drags indoor wall mounted machine controller in the three small central air conditioning control device.
Indoor wall mounted machine controller 100 of described 25A or the indoor wall mounted machine controller 200 of 25B comprise: indoor on-hook control circuit 110, this indoor on-hook control circuit 110 is that the single-chip microcomputer integrated circuit (IC) chip of PICF16873 constitutes by model, be arranged on the transformation rectification circuit 120 and the temperature sensing circuit 130 of control circuit 110 input ends, be arranged on communicating circuit 140, hummer 150, swing blade motor driving circuit 160, the blower fan driving circuit 170 of control circuit 110 output terminals; Wherein, described communicating circuit 140 is connected with intelligent flow distribution controller 400.
In the present embodiment, above-mentioned parts are divided into three bulks: master control borad, running status display board, telepilot.Master control borad, the order that to be indoor on-hook control circuit 110 send according to telepilot and the state of system are controlled the operation of air conditioner and the travelling speed of compressor, and carry out indoor temperature, coil temperature detects, the blower fan drive controlling, damper motor control, handle various defencive functions, indoor fan adopts the PG motor, the single-phase speed governing of controllable silicon (PG) motor is a cross flow fan, can realize stepless speed regulation, comfortableness to air-conditioning, low noise has very great help, usually six grades of speed of general setting: wherein high, in, low wind shelves can be provided with on telepilot, and superpower wind is mainly used in fast-refrigerating and when heating fast, when ultralow wind was mainly used in dehumidifying and heats beginning, ultra micro wind was mainly used in Defrost operation; The major function that receives display board is the signal that receives telepilot, signal is passed to indoor control unit, simultaneously by LED bright/go out the state of display system, can control the swing and the position of air door, the air door of indoor set has directed and swings two kinds of control modes automatically, and the wind direction options button on the available telepilot is selected its method of operation.
Please in conjunction with Fig. 2 referring to shown in Figure 6, Fig. 6 is the block scheme that the utility model one drags indoor cabinet machine controller in the three small central air conditioning control device.50 indoor cabinet machine controllers 300 comprise: indoor cabinet-type air conditioner control circuit 310, this indoor cabinet-type air conditioner control circuit 310 is that the single-chip microcomputer integrated circuit (IC) chip of GP32 constitutes by model, be arranged on the transformation rectification circuit 320 and the temperature sensing circuit 330 of indoor cabinet-type air conditioner control circuit 310 input ends, be arranged on communicating circuit 340, hummer 350, swing blade motor driving circuit 360, the blower fan driving circuit 370 of indoor cabinet-type air conditioner control circuit 310 output terminals; Wherein, described communicating circuit 340 is connected with intelligent flow distribution controller 400; Wherein, indoor cabinet-type air conditioner control circuit 310 is that model is that the single-chip microcomputer integrated circuit (IC) chip of GP32 mainly can follow the smart allocation device to carry out communication, finishes that blower fan drives, swing blade motor swing, indoor temperature protection, liquid crystal display function.
In the present embodiment, multiple protection functions has been adopted in the design of 50 indoor cabinet machine controllers 300, when the indoor and outdoor sensor damages, indoor coil pipe is cold excessively, overheated, indoor fan stall, indoor and outdoor communication failure etc., the control principle of protection operation is stoppage protection not, system's Fraquent start stops, and causes starting and stops vibrating noise, temperature fluctuation; The system discovery abnormal conditions, the degree of controller failure judgement, compressor is done the reduction of speed processing generally speaking, and waiting system withdraws from the protection operation; Serious as withdrawing from protection or fault, then system stops, and waits for maintenance process etc.
Please in conjunction with Fig. 2 referring to shown in Figure 7, Fig. 7 is the block scheme that the utility model one drags outdoor controller in the three small central air conditioning control device.Described AC frequency conversion outdoor controller 500 comprises: off-premises station control circuit 510, this off-premises station control circuit 510 is that F2402DSP digital signal processor integrated circ chip constitutes by model, be arranged on voltage detecting circuit 520, current detecting electric current 530, the temperature sensing circuit 540 of off-premises station control circuit 510 input ends, be arranged on communicating circuit 550, PWM pulse-width signal driving circuit 560, four-way valve driving circuit 570, blower fan driving circuit 580, the status display circuit 590 of off-premises station control circuit 510 output terminals.Above-mentioned AC frequency conversion outdoor controller 500 is connected with intelligent flow distribution controller 400 by communicating circuit 550; And be connected with the switching power circuit 490 in the intelligent flow distribution controller 400.
In the present embodiment, AC frequency conversion outdoor controller 500 is according to the instruction of indoor controller unit, functions such as the control of AC frequency conversion driven compressor, fan operation, four-way valve control, outdoor environment temperature detection, outdoor coil pipe used temperature detection, compressor exhaust temperature detection, current detecting, busbar voltage detection are carried out in the operation of control air conditioner outdoor section.
Off-premises station control circuit 510 in the above-mentioned AC frequency conversion outdoor controller 500, be used to control the operation of the device of air-conditioner outdoor unit each several part, carry out various computings, handle various data, by various algorithms and control law, the work of coordination air-conditioning system, the model that off-premises station control circuit 510 is adopted is that F2402DSP digital signal processor integrated circ chip is a carrier of realizing various control strategies and algorithm, in the present embodiment, reliable in order to guarantee AC frequency conversion outdoor controller 500, operation efficiently, the control chip that off-premises station control circuit 510 is adopted has been selected the TSM320F24X series of Texas Instrucments and the DSP DSP chip in the new TMS320F240X series of releasing for use, this DSP has very high bus frequency: 40Mhz, fast operation, can carry out various data processing fast, inside has unique pipeline organization, its program bus separates mutually with data bus, can operate the program space and data space simultaneously, this superior bus structure have also further improved data processing speed, can adapt to the quick requirement of real time system control.
In addition, the main circuit of variable frequency control comprises rectification circuit and inverter circuit (not shown).Rectification circuit becomes DC voltage to the alternating current 220V voltage transitions by rectifier bridge; Inverter circuit mainly comprises 6 high-power IGBT brachium pontis.Alternating-current controller is realized driven compressor by the conducting phase sequence of controlling 6 pipes.
The AC frequency conversion driven compressor adopts space vector SVPWM (Space-vector pulse widthmodulation).Space vector SVPWM utilizes the open/close eight kinds of conducting states of inverter, switches control output voltage waveform and size in different time.In eight states of space vector, wherein 6 states produce output voltage, and other two is zero vector.Space vector is the voltage vector that adopts two adjacent non-zero vectors and the synthetic equivalence of zero vector, and be carrier cycle T total action time.Zero vector does not influence output voltage waveforms, but can influence switch number of times and switching loss.Each PWM is in the cycle, twice of upper and lower bridge arm break-make.According to SVPWM switch modulation mode as can be known, the amplitude of the line voltage of motor side is Ed.Effective value is
Ed.When bus voltage ED=300V, its output line voltage is 212V like this.The voltage of its line voltage ratio SPWM modulation is high by 15%, has improved the utilization factor of input voltage.Can solve the not enough problem of controller output line voltage fully.And SVPWM has other advantage than SPWM mode: identical carrier frequency, the switch number of times lacks 1/3, has reduced switching loss.The harmonic current components that SVPWM produces is littler.Outdoor variable frequency control has improved an efficient of dragging three air-conditioner controllers after adopting SVPWM.
Outdoor defencive function in the AC frequency conversion outdoor controller 500 is, because domestic air conditioning is a domestic electric appliances, must be safe and reliable, and with the long-term failure-free operation of assurance controller, so the defencive function of controller system is very crucial problem.As: outdoor coil pipe used overheated/cold excessively, compressor exhaust temperature protection, current protection, mistake/low-voltage protection, module excess current etc.Off-premises station can independently carry out special state operation and protection operation, comprises Defrost operation, low-voltage protection operation, overload protection operation, overcurrent protection, the operation of compressor overheat protector, the bad error protection of protecting, communicate by letter out of sensor, momentary power failure protection.
Please in conjunction with Fig. 2 and Fig. 7 referring to shown in Figure 8, Fig. 8 the utility model one drags the block scheme of switching power circuit in the three small central air conditioning control device.Described switching power circuit 490 is by switch power module 491, light-coupled isolation driver module 492, Intelligent Power Module parts 493.Wherein, the input end of switch power module 491 is connected with AC power, is used for the AC power of civil power is transformed into each required DC voltage to outdoor control panel 500; The input end of this light-coupled isolation driver module 492 is connected with outside drive signal in the outdoor control panel 500, and output terminal is connected with the input end of driving circuit in the Intelligent Power Module 493 with the output terminal of switch power module 491; The input end of this Intelligent Power Module module 3 is connected with an output terminal of light-coupled isolation driver module 492, and its output terminal is connected with direct current variable frequency motor, is used to control the power drive to the three-phase direct-current brushless motor.
In the present embodiment, the main circuit input voltage is alternating current 220V, and through obtaining the DC voltage of 300V behind the rectifying and wave-filtering, it provides the working power as compressor.Three go up brachium pontis each with a 15V control power supply UP1, VP1, WP1, three following brachium pontis and fault are exported shared one and are controlled power supply VN1.Switching Power Supply provides the power supply of control chip needs+5V simultaneously, and the relay working power.These all power supplys are provided by Switching Power Supply.Switching Power Supply is compared with linear stabilized power supply, has that power consumption is little, efficient is high, volume is little, in light weight, characteristics such as voltage stabilized range is wide, and the Switching Power Supply that is adopted in the present embodiment management integrated package is the TOP224 power supply chip of TOPSwitch.The TOP224 power supply chip of TOPSwitch has merged to all functions of switching mode control system in a slice integrated circuit: power MOSFET, pulsewidth (PWM) modulator, high-voltage starting circuit, loop compensation, fault automatic protection circuit.By using CMOS and integrated function as much as possible to realize high-level efficiency, compare in bipolar device or discrete component mode, CMOS greatly reduces bias current.Do not need external high-power resistance to carry out current detecting yet and the initial start bias current is provided.
Power device is selected IPM (Intelligent PowerModules) PM50CTJ060 of Mitsubishi Mitsubishi Electric for use.Because IPM on-state loss and switching loss are all lower, make heating radiator reduce, thereby system dimension also reduce.Especially IPM is integrated driving and holding circuit make the hardware circuit of system simple and reliable, control easyly, and have improved the self-shield ability under the failure condition.PM50CTM060 maximum working voltage electric current is 600V/50A, and the highest switching frequency fC of module can reach 8kHz.Can design the frequency-changeable compressor that is applied to drive 3kW.Satisfy a requirement of dragging three DRIVEN BY AIR CONDITIONING COMPRESSOR power fully.
The utility model one drags three central air conditioner controllers also to have following good effect:
1, only just can drive three indoor sets with a frequency-changeable compressor, in three interior machines situation of standard-sized sheet not Lower, the heat exchange efficiency of system improves greatly, and overall efficiency can improve more than 30%;
2, the aperture of control electric expansion valve, the dynamic assignment of realization cooling system agent flux makes the worker of system Do in stable condition, efficient raising;
2, according to duty, control compressor rotary speed, regulation output power;
3, have preferably power supply, the utility model has designed switch power module, with linear stabilized power supply Compare, have that power consumption is little, efficient is high, volume is little, in light weight, characteristics such as voltage stabilized range is wide;
4, reliable many communication modes, the utility model have designed intelligent flow distributor and off-premises station and many Interference source is got rid of in the communication of individual indoor set, has improved data exchange;
6, solve an oil return problem of dragging many air-conditionings, system effectiveness is provided;
7, indoor set adopts controllable silicon Fan Regulation air quantity, reduces room noise;
8, indoor set, off-premises station, intelligent flow distributor have formed perfect defencive function, have guaranteed and be The system safe operation.
In sum, the utility model one drags three small-sized central controllers can finish multi-split air conditioner The key issue such as flow distribution of refrigerant, communication, compressor rotary speed control, oil return control, promote little The development of type Market of Central Air-conditioning is uplifted the people's living standard, and is therefore very practical.
Claims (7)
1. one kind one is dragged three small central air conditioning control device, be used for the control of small central air conditioning system, comprise: the indoor wall mounted machine controller of 25A (100), the indoor wall mounted machine controller of 25B (200), 50 indoor cabinet machine controllers (300), AC frequency conversion outdoor controller (500); It is characterized in that also comprising:
One intelligent flow distribution controller (400), this intelligent flow distribution controller (400) comprises, digital signal processor (410), the switching power circuit (490) that is connected with digital signal processor (410), running status display circuit (420), test function circuit (430), communicating circuit (440), centralized control panel communicating circuit (450), driving circuit for electromagnetic valve (460), electronic expansion valve-driving circuit (470), temperature sensing circuit (480); Wherein, described communicating circuit (440) is connected with the indoor wall mounted machine controller of 25A (100), the indoor wall mounted machine controller of 25B (200), 50 indoor cabinet machine controllers (300), AC frequency conversion outdoor controller (500).
2. as claimed in claim 1 one drags three small central air conditioning control device, it is characterized in that: described communicating circuit (440) comprises, the communicating circuit I (441) that is connected with the indoor wall mounted machine controller of 25A (100), the communicating circuit II (442) that is connected with the indoor wall mounted machine controller of 25B (200), the communicating circuit III (443) that is connected with 50 indoor cabinet machine controllers (300), the communicating circuit IV (444) that is connected with AC frequency conversion outdoor controller (500);
Each communicating circuit comprises, the decompression voltage regulator of forming by resistance, electric capacity, stabilivolt, the coupled circuit of forming by Light Coupled Device and resistance, the on-off circuit of forming by transistor and resistance, by the signal path circuitry that diode, Light Coupled Device and resistance capacitance are formed, this signal path circuitry is connected with digital signal processor (410).
3. as claimed in claim 1 one drags three small central air conditioning control device, it is characterized in that: described electronic expansion valve-driving circuit (470) is made up of driving circuit and protecting against shock circuit, this driving circuit is made of the anti-phase drive integrated circult chip that is connected with digital signal processor (410), and this protecting against shock circuit is made of with two transistors that are connected with digital signal processor (410) four diodes that are connected with anti-phase drive integrated circult chip.
4. as claimed in claim 1 one drags three small central air conditioning control device, it is characterized in that: the indoor wall mounted machine controller of indoor wall mounted machine controller of described 25A (100) or 25B (200) comprising: indoor on-hook control circuit (110), this indoor on-hook control circuit (110) is that the single-chip microcomputer integrated circuit (IC) chip of PICF16873 constitutes by model, be arranged on the transformation rectification circuit (120) and the temperature sensing circuit (130) of control circuit (110) input end, be arranged on the communicating circuit (140) of control circuit (110) output terminal, hummer (150), swing blade motor driving circuit (160), blower fan driving circuit (170); Wherein, described communicating circuit (140) is connected with intelligent flow distribution controller (400).
5. as claimed in claim 1 one drags three small central air conditioning control device, it is characterized in that: described 50 indoor cabinet machine controllers (300) comprising: indoor cabinet-type air conditioner control circuit (310), this indoor cabinet-type air conditioner control circuit (310) is that the single-chip microcomputer integrated circuit (IC) chip of GP32 constitutes by model, be arranged on the transformation rectification circuit (320) and the temperature sensing circuit (330) of indoor cabinet-type air conditioner control circuit (310) input end, be arranged on the communicating circuit (340) of indoor cabinet-type air conditioner control circuit (310) output terminal, hummer (350), swing blade motor driving circuit (360), blower fan driving circuit (370); Wherein, described communicating circuit (340) is connected with intelligent flow distribution controller (400).
6. as claimed in claim 1 one drags three small central air conditioning control device, it is characterized in that: described AC frequency conversion outdoor controller (500) comprising: off-premises station control circuit (510), this off-premises station control circuit (510) is that F2402 digital signal processor integrated circ chip constitutes by model, be arranged on the voltage detecting circuit (520) of off-premises station control circuit (510) input end, current detecting electric current (530), temperature sensing circuit (540) is arranged on the communicating circuit (550) of off-premises station control circuit (510) output terminal, pulse-width signal driving circuit (560), four-way valve driving circuit (570), blower fan driving circuit (580), status display circuit (590);
Described AC frequency conversion outdoor controller (500) is connected with intelligent flow distribution controller (400) by communicating circuit (550); And be connected with the switching power circuit (490) in the intelligent flow distribution controller (400).
7. as claimed in claim 6 one drags three small central air conditioning control device, it is characterized in that: described switching power circuit (490) is by switch power module (491), light-coupled isolation driver module (492), Intelligent Power Module parts (493), wherein,
The input end of switch power module (491) is connected with AC power, is used for the AC power of civil power is transformed into each required DC voltage to outdoor control panel (500);
The input end of this light-coupled isolation driver module (492) is connected with outside drive signal in the outdoor control panel (500), and output terminal is connected with the input end of driving circuit in the Intelligent Power Module (493) with the output terminal of switch power module (491);
The input end of this Intelligent Power Module module (493) is connected with an output terminal of light-coupled isolation driver module (492), and its output terminal is connected with direct current variable frequency motor, is used to control the power drive to the three-phase direct-current brushless motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260893 CN2588429Y (en) | 2002-10-23 | 2002-10-23 | One-driving-three central air conditioner controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260893 CN2588429Y (en) | 2002-10-23 | 2002-10-23 | One-driving-three central air conditioner controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2588429Y true CN2588429Y (en) | 2003-11-26 |
Family
ID=33727831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02260893 Expired - Fee Related CN2588429Y (en) | 2002-10-23 | 2002-10-23 | One-driving-three central air conditioner controller |
Country Status (1)
| Country | Link |
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| CN (1) | CN2588429Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175290A (en) * | 2013-03-26 | 2013-06-26 | 青岛海尔空调电子有限公司 | Valve cage device of multi-couple unit air conditioner capable of achieving simultaneous cooling and heating |
| CN104154629A (en) * | 2014-05-26 | 2014-11-19 | 广东美的制冷设备有限公司 | Method and device for controlling flow of refrigerant of air conditioner system with an outdoor unit and multiple indoor units |
| CN110793158A (en) * | 2019-11-06 | 2020-02-14 | 广州华凌制冷设备有限公司 | Control circuit of alternating current fan and state detection method of alternating current fan of air conditioner |
| CN110830026A (en) * | 2019-11-28 | 2020-02-21 | 广东美的暖通设备有限公司 | Optical coupling isolation communication circuit, circuit board and air conditioner |
-
2002
- 2002-10-23 CN CN 02260893 patent/CN2588429Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175290A (en) * | 2013-03-26 | 2013-06-26 | 青岛海尔空调电子有限公司 | Valve cage device of multi-couple unit air conditioner capable of achieving simultaneous cooling and heating |
| CN103175290B (en) * | 2013-03-26 | 2016-03-02 | 青岛海尔空调电子有限公司 | Realize the valve cap device of changes in temperature multi-gang air-conditioner simultaneously |
| CN104154629A (en) * | 2014-05-26 | 2014-11-19 | 广东美的制冷设备有限公司 | Method and device for controlling flow of refrigerant of air conditioner system with an outdoor unit and multiple indoor units |
| CN110793158A (en) * | 2019-11-06 | 2020-02-14 | 广州华凌制冷设备有限公司 | Control circuit of alternating current fan and state detection method of alternating current fan of air conditioner |
| CN110793158B (en) * | 2019-11-06 | 2021-11-23 | 广州华凌制冷设备有限公司 | Control circuit of alternating current fan and state detection method of alternating current fan of air conditioner |
| CN110830026A (en) * | 2019-11-28 | 2020-02-21 | 广东美的暖通设备有限公司 | Optical coupling isolation communication circuit, circuit board and air conditioner |
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Granted publication date: 20031126 Termination date: 20111023 |