CN203691275U - Air conditioning unit - Google Patents
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- CN203691275U CN203691275U CN201320860494.1U CN201320860494U CN203691275U CN 203691275 U CN203691275 U CN 203691275U CN 201320860494 U CN201320860494 U CN 201320860494U CN 203691275 U CN203691275 U CN 203691275U
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 56
- 238000004804 winding Methods 0.000 claims description 36
- 239000003990 capacitor Substances 0.000 claims description 22
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- 238000006243 chemical reaction Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000002459 sustained effect Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
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- 238000005070 sampling Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000000903 blocking effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
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Abstract
The utility model discloses an air conditioning unit. Wherein, air conditioning unit includes: an electrical component; and the driving circuit comprises a direct current side and an alternating current side, the direct current side of the driving circuit is connected with a direct current power grid, and the alternating current side of the driving circuit is connected with the power utilization component and used for converting the direct current of the direct current power grid on the direct current side into the alternating current required by the power utilization component. Through the utility model discloses, the effect that reduces air conditioning unit's electric energy loss has been reached.
Description
Technical field
The utility model relates to field of air conditioning, in particular to a kind of air-conditioning unit.
Background technology
Fig. 1 is according to the topological diagram of the air-conditioning unit of prior art.As shown in Figure 1, that the access of air-conditioning unit is the alternating current AC of utility network single-phase alternating current (Alternation Current is called for short AC) or three-phase four-wire system.Frequency-changeable compressor drives and frequency conversion fan drives the alternating current that enters air-conditioning unit through AC/DC(Direct Current, direct current) after rectification, alternating current is become to direct current, direct current after rectification is reverse into the alternating current of voltage and changeable frequency again through DC/AC, for driving frequency-changeable compressor M1 ' and frequency conversion fan M2 ' running.Meanwhile, be also transformed into the direct current of low pressure through Switching Power Supply through the direct current of AC/DC rectification, for the control unit that frequency-changeable compressor drives and frequency conversion fan drives provides working power.Alternating current, by Switching Power Supply (alternating current is converted into direct current AC/DC), provides the working power of DC low-voltage to main control unit.The power supply of DC load (as transducers such as valve class, pressure sensor, temperature sensor such as equal fuel tap, cross valves) is supplied with by the alternating current (as 220V alternating current) of high pressure.
The alternating current of access air-conditioning need to become direct current after over commutation, then is transformed into alternating current for driving frequency-changeable compressor and frequency conversion fan by direct current, and the conversion links of electric energy process is more, and electric energy loss is large, and utilance is low.
For the large problem of electric energy loss of air-conditioning unit in prior art, effective solution is not yet proposed at present.
Utility model content
Main purpose of the present utility model is to provide a kind of air-conditioning unit, to solve the large problem of electric energy loss of air-conditioning unit.
To achieve these goals, according to an aspect of the present utility model, provide a kind of air-conditioning unit.Comprise according to air-conditioning unit of the present utility model: consuming parts; And drive circuit, drive circuit comprises DC side and AC, the DC side of drive circuit is connected with direct current network, and the AC of drive circuit is connected with consuming parts, for the direct current of the direct current network of DC side being converted into the required alternating current of consuming parts work.
Further, consuming parts comprises compressor and blower fan, drive circuit comprises: compressor drive circuit, the DC side of compressor drive circuit is connected with direct current network, the AC of compressor drive circuit is connected with compressor, for the direct current of direct current network being converted into the required alternating current of compressor operating; And blower fan drive circuit, the DC side of blower fan drive circuit is connected with direct current network, and the AC of blower fan drive circuit is connected with blower fan, for the direct current of direct current network being converted into the required alternating current of blower fan work.
Further, air-conditioning unit also comprises: DC load; Main control unit, is connected respectively with DC load with drive circuit, for controlling drive circuit and DC load; And Switching Power Supply, be connected respectively with drive circuit, DC load and main control unit, for the direct current of direct current network is converted into the first required direct current of drive circuit works, the direct current of direct current network is converted into the second required direct current of DC load work, the direct current of direct current network is converted into the 3rd required direct current of main control unit work, wherein, the first direct current, the second direct current and the 3rd galvanic voltage are less than the galvanic voltage of direct current network.
Further, Switching Power Supply is inverse-excitation type switch power-supply, inverse-excitation type switch power-supply comprises: switch transformer, switch transformer comprises primary side and primary side, the primary side of switch transformer is connected with direct current network, and the primary side of switch transformer is connected respectively with drive circuit, DC load and main control unit; And switching tube, be connected between direct current network and the primary side of switch transformer.
Further, switch transformer comprises: armature winding, is connected with direct current network, for storing the direct current of direct current network; And secondary winding, comprise the first sub-secondary winding, the second sub-secondary winding, the 3rd sub-secondary winding and the 4th sub-secondary winding, the first sub-secondary winding is connected with compressor drive circuit, the second sub-secondary winding is connected with blower fan drive circuit, the 3rd sub-secondary winding is connected with main control unit, and the 4th sub-secondary winding is connected with DC load.
Further, drive circuit comprises: rectification circuit, and rectification circuit comprises DC side and AC, and the DC side of rectification circuit is connected with direct current network, and the AC of rectification circuit is connected with consuming parts; Storage capacitor, is connected to two terminals of direct current network; Grading resistor, in parallel with storage capacitor, and be connected to two terminals of direct current network; And sample circuit, one end is connected with the AC of rectification circuit, and the other end is connected with main control unit, samples for the alternating current of the AC to rectification circuit.
Further, storage capacitor comprises the first electric capacity and the second electric capacity, the first end of the first electric capacity is connected with one end of direct current network, the second end of the first electric capacity is connected with the first end of the second electric capacity, the second end of the second electric capacity is connected with the other end of direct current network, grading resistor comprises the first resistance and the second resistance, the first end of the first resistance is connected with the first end of the first electric capacity, the second end of the first resistance is connected with the second end of the first electric capacity, the first end of the second resistance is connected respectively with the first end of the first resistance with the first end of the second electric capacity, the second end of the second resistance is connected with the second end of the second electric capacity.
Further, rectification circuit is Intelligent Power Module.
Pass through the utility model, employing comprises the air-conditioning unit of consuming parts and drive circuit, by drive circuit, the direct current of direct current network input is transformed to the required alternating current of consuming parts work, only need to be by the direct current of input through once resupplying consuming parts use after conversion, reduced the conversion links of electric energy in air-conditioning unit with respect to the air-conditioning unit of prior art, solve the large problem of electric energy loss of air-conditioning unit, reach and reduced the effect of the electric energy loss of air-conditioning unit, and then improved the efficiency of air-conditioning unit.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is according to the topological diagram of the air-conditioning unit of prior art;
Fig. 2 is according to the topological diagram of the air-conditioning unit of the utility model the first embodiment;
Fig. 3 is according to the topological diagram of the air-conditioning unit of the utility model the second embodiment;
Fig. 4 is according to the communication topology figure of the main control unit of the utility model embodiment and drive circuit;
Fig. 5 is according to the topological diagram of the Switching Power Supply of the utility model embodiment;
Fig. 6 is according to the circuit diagram of the drive circuit of the utility model embodiment; And
Fig. 7 is the schematic diagram that air-conditioning unit is controlled according to the utility model embodiment.
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of the utility model part, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all should belong to the scope of the utility model protection.
It should be noted that, term " first ", " second " etc. in specification of the present utility model and claims and above-mentioned accompanying drawing are for distinguishing similar object, and needn't be used for describing specific order or precedence.Should be appreciated that the data of such use are suitably exchanging in situation, so that embodiment of the present utility model described herein.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, for example, those steps or unit that process, method, system, product or the equipment that has comprised series of steps or unit is not necessarily limited to clearly list, but can comprise clearly do not list or for these processes, method, product or equipment intrinsic other step or unit.
The utility model embodiment provides a kind of air-conditioning unit.
Fig. 2 is according to the topological diagram of the air-conditioning unit of the utility model the first embodiment.As shown in Figure 2, this air-conditioning unit comprises consuming parts 1 and drive circuit 2.Consuming parts 1 can be that compressor or blower fan etc. exchange consuming parts, and wherein, compressor can be frequency-changeable compressor, and blower fan can be frequency conversion fan, and blower fan can be indoor fan or outdoor fan.Drive circuit 2 comprises DC side and AC, and the DC side of drive circuit 2 is connected with direct current network, and the DC side of drive circuit 2 can be to be connected with tributary electrical network by DC bus, and direct current network is for providing the work of air-conditioning unit required direct current.The AC of drive circuit 2 is connected with consuming parts 1, and drive circuit can be compressor drive circuit, can be also blower fan drive circuit.In the time that consuming parts is compressor, the AC of compressor drive circuit be connected with compressor; In the time that consuming parts is blower fan, the AC of blower fan drive circuit is connected with blower fan.Drive circuit 2, for the direct current of the direct current network of DC side being converted into the consuming parts 1 required alternating current of working, can be the direct current of direct current network to be converted into three-phase alternating current supply with consuming parts 1.Drive circuit 2 can be by providing alternating current to consuming parts 1, and to drive consuming parts 1 to turn round, wherein, compressor drive circuit can be for driving frequency-changeable compressor running, and blower fan drive circuit is used for driving frequency conversion fan running.
It should be noted that, the direct current network of the utility model embodiment can be the direct current network that for example photovoltaic generation produces, also can be that other export galvanic direct current network or DC power supply, " direct current network " in the present embodiment do not have improper restriction to the utility model.
By the utility model embodiment, by drive circuit 2, the direct current of direct current network input is transformed to the consuming parts 1 required alternating current of working, only the direct current of input need to be resupplied to consuming parts 1 after once changing uses, reduced the conversion links of electric energy in air-conditioning unit with respect to the air-conditioning unit of prior art, solve the large problem of electric energy loss of air-conditioning unit, reach and reduced the effect of the electric energy loss of air-conditioning unit, and then improved the efficiency of air-conditioning unit.
Fig. 3 is according to the topological diagram of the air-conditioning unit of the utility model the second embodiment.The air-conditioning unit of this embodiment can be used as a kind of preferred implementation of the air-conditioning unit of above-described embodiment.As shown in Figure 3, consuming parts 1 comprises compressor and blower fan, and drive circuit 2 comprises compressor drive circuit and blower fan drive circuit.
Compressor drive circuit comprises DC side and AC, the DC side of compressor drive circuit is connected with direct current network, can be by DC bus, the DC side of compressor drive circuit and direct current network to be coupled together, the AC of compressor drive circuit is connected with compressor M1, and this compressor drive circuit is for being converted into the direct current of direct current network the compressor M1 required alternating current of working.Wherein, the compressor M1 required alternating current of working can be the alternating current of voltage and changeable frequency.The alternating current that the direct current of direct current network is reverse into voltage and changeable frequency through DC/AC by compressor drive circuit turns round with drive compression machine M1.
Blower fan drive circuit comprises DC side and AC, the DC side of blower fan drive circuit is connected with direct current network, can be by DC bus, the DC side of blower fan drive circuit and direct current network to be coupled together, the AC of blower fan drive circuit is connected with blower fan M2, for the direct current of direct current network being converted into the required alternating current of blower fan work.Wherein, the blower fan M2 required alternating current of working can be the alternating current of voltage and changeable frequency.By blower fan drive circuit, the direct current of direct current network is reverse into the alternating current of voltage and changeable frequency through DC/AC to drive blower fan M2 running.
Performance parameter is relevant with power separately for the voltage of the alternating current after compressor drive circuit inversion and the alternating current after the inversion of blower fan drive circuit and frequency and compressor M1 and blower fan M2, can be identical, and also can be different.
By the utility model embodiment, to the direct current of direct current network be separately converted to compressor and the required alternating current of blower fan work by compressor drive circuit and blower fan drive circuit, reduce electric energy conversion links, reduced further the electric energy loss of air-conditioning unit.
Preferably, air-conditioning unit also comprises DC load, main control unit and Switching Power Supply.Wherein, DC load can be valve and the transducer in air-conditioning unit, and for example cross valve, equal fuel tap, oil return valve, balanced valve, system high-low pressure are measured valve and system high-low pressure sensor.
Main control unit is connected respectively with DC load with drive circuit 2, and this main control unit is used for controlling drive circuit 2 and DC load.Main control unit can comprise multiple control units, for example, for controlling the control unit of compressor and for controlling the control unit of blower fan.Main control unit can be control chip, main control unit can be to be connected by communication bus with drive circuit 2, as shown in Figure 4, in the time that drive circuit 2 comprises compressor drive circuit and blower fan drive circuit, compressor drive circuit is connected by communication bus with main control unit with blower fan drive circuit, main control unit sends control signal by communication bus to compressor drive circuit and blower fan drive circuit, for controlling compressor drive circuit and blower fan drive circuit works.
Control unit is the mster-control centre of whole air-conditioning unit, plays a part to detect, monitors and controls.By detecting DC load, such as system high-low pressure, pipeline temperature etc. are monitored the data mode of returning from slave computers such as driven compressor simultaneously, carry out next step control.
Exchanges data between control unit and compressor drive circuit and blower fan drive circuit is to pass through communication mode, its carrier comprises 485 buses, UART(Universal Asynchronous Receiver/Transmitter, universal asynchronous receiving-transmitting transmitter) bus, a SPI(high speed, full duplex, synchronous communication bus) bus and CAN(Controller Area Network, controller local area network) bus etc., adopt semiduplex master/slave communication pattern, control unit is host computer, compressor drive circuit and blower fan drive circuit, host computer is called the roll to slave computer, slave computer is replied host computer after receiving a data, host computer can only be put a slave computer at synchronization, and between the each slave computer of roll-call, leaving time slot loses to prevent bus data conflict.
Main control unit can also comprise the control unit for controlling DC load, for send the work of control signal control DC load to DC load.
Switching Power Supply is connected respectively with drive circuit 2, DC load and main control unit, for the direct current of direct current network being converted into drive circuit 2 the first required direct current of working.Switching Power Supply can be direct-current switch power supply, for the high voltage direct current of direct current network being converted into the required low-voltage DC (DC/DC) of air-conditioning unit corresponding component work.In the time that drive circuit 2 comprises compressor drive circuit and blower fan drive circuit, as shown in Figure 3, Switching Power Supply is connected respectively with blower fan drive circuit with compressor drive circuit (in Fig. 3 shown in dotted line), and the direct current of direct current network is connected with Switching Power Supply by DC bus.The first direct current comprises direct current and the required direct current of electric fan drive circuit works that compressor drive circuit work is required, the direct current of direct current network is after the conversion of Switching Power Supply, and unification provides the required direct current of compressor drive circuit work and the required direct current of electric fan drive circuit works to compressor drive circuit and electric fan drive circuit.The required direct current of the direct current that compressor drive circuit work is required and electric fan drive circuit works can be identical, also can be different.Further, the first galvanic voltage is 15V, that is to say that the direct current of direct current network is converted into through Switching Power Supply direct current supply compressor drive circuit and the electric fan drive circuit that voltage is 15V.
Switching Power Supply is also for being converted into the direct current of direct current network the second required direct current of DC load work.The second direct current can be 36V and the low-voltage DC below 36V, by Switching Power Supply, the direct current of direct current network is converted into the low-voltage DC of the voltage request of load human-body safety, supply with DC load, air conditioner group controller part is all safe voltage everywhere, thereby improve the security reliability of unit, avoid the potential safety hazard of bringing because of air conditioner lens electric leakage problem, improved the fail safe when safeguarding, using.
In addition, Switching Power Supply is also for being converted into the direct current of direct current network the 3rd required direct current of main control unit work, and the 3rd direct current can be that voltage is the direct current of 24V.The first direct current, the second direct current and the 3rd galvanic voltage are less than the galvanic voltage of direct current network.For example, the first direct current can be 15V direct current, and the second direct current can be that 36V(contains) following direct current, the 3rd direct current can be 24V direct current.
It should be noted that, " first ", " second " of the utility model embodiment, " the 3rd ", be only for the operating current during distinguishing respectively, do not represent sequencing, the utility model do not had to improper restriction.
According to the utility model embodiment, by Switching Power Supply, the direct current of direct current network is converted into drive circuit 2, main control unit and the required low-voltage DC of DC load work, strengthen the safety and reliability of air-conditioning unit.In addition, due in the electric cabinet inside of air-conditioning unit except the compressor and fan power in exit, other are direct voltage, thereby have reduced the problem of the interlaced electromagnetic interference of bringing between dissimilar power supply.
Preferably, Switching Power Supply is inverse-excitation type switch power-supply, and inverse-excitation type switch power-supply comprises switch transformer T and switching tube Q1.
As shown in Figure 5, switch transformer T comprises primary side and primary side, and the primary side of switch transformer T is connected with direct current network, and the primary side of switch transformer T is connected respectively with drive circuit 2, DC load and main control unit.Switching tube, is connected between direct current network and the primary side of switch transformer.Between the primary and secondary of Switching Power Supply, isolate by switch transformer, in switching tube Q1 conduction period, elementary energy storage at switch transformer, at switching tube Q1 blocking interval, energy is delivered to primary side from the primary side of switch transformer T.
Wherein, as shown in Figure 5, switch transformer T comprises armature winding and secondary winding, and this armature winding is connected with direct current network, for storing the direct current of direct current network.Secondary winding comprises the first sub-secondary winding, the second sub-secondary winding, the 3rd sub-secondary winding and the 4th sub-secondary winding, the first sub-secondary winding is connected with compressor drive circuit, the second sub-secondary winding is connected with blower fan drive circuit, the 3rd sub-secondary winding is connected with main control unit, and the 4th sub-secondary winding is connected with DC load.The first secondary winding is for providing the direct current of 15V to compressor drive circuit, the second sub-secondary winding provides the direct current of 15V for drive circuit aweather, the 3rd sub-secondary winding is for providing the direct current of 24V to main control unit, the 4th sub-secondary winding is for providing 36V or the direct current below 36V to DC load.
Preferably, drive circuit comprises rectification circuit, storage capacitor, grading resistor and sample circuit.
As shown in Figure 6, rectification circuit comprises DC side and AC, and the DC side of rectification circuit is connected with direct current network, and the AC of rectification circuit is connected with consuming parts.This rectification circuit can be three-phase PWM (pulse width modulation) rectification circuit, preferably, this rectification circuit is Intelligent Power Module (Intelligent Power Module, referred to as IPM), this rectification circuit comprises insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, referred to as IGBT) Q1, Q2, Q3, Q4, Q5 and Q6 and sustained diode 1, D2, D3, D4, D5 and D6.In power model, the grid of Q1, Q2, Q3, Q4, Q5 and Q6 is connected successively with PWM1, PWM2, PWM3, PWM4, PWM5 and the PWM6 of processor respectively, the collector electrode of IGBT pipe Q1 is connected with sustained diode 1 negative electrode, the emitter of IGBT pipe Q1 is connected with sustained diode 1 anode, the annexation of IGBT pipe Q2, Q3, Q4, Q5 and Q6 and sustained diode 2, D3, D4, D5 and D6 is similar with the annexation of IGBT pipe Q1 and sustained diode 1, does not repeat here.The emitter of IGBT pipe Q1 is connected with IGBT pipe Q2 collector electrode, and the emitter of IGBT pipe Q3 is connected with IGBT pipe Q4 collector electrode, and the emitter of IGBT pipe Q5 is connected with IGBT pipe Q6 collector electrode.The U line of consuming parts 1 is connected with the emitter of IGBT pipe Q1, and its voltage is designated as Ua, and the V line of consuming parts 1 is connected with the emitter of IGBT pipe Q3, and its voltage is designated as Ub, and the W line of consuming parts 1 is connected with the emitter of IGBT pipe Q5, and its voltage is designated as Uc.
Storage capacitor is connected to two terminals of direct current network.As shown in phantom in Figure 6, storage capacitor can be storage capacitor array, and wherein, the capacity of electric capacity, can be for the direct current of storage direct current network by the power decision of consuming parts 1.Further, storage capacitor comprises the first capacitor C 1 and the second capacitor C 2, first first end of capacitor C 1 and one end of direct current network are connected, and the second end of the first capacitor C 1 is connected with the first end of the second capacitor C 2, and the second end of the second capacitor C 2 is connected with the other end of direct current network.
Grading resistor is in parallel with storage capacitor, and is connected to two terminals of direct current network.Further, grading resistor comprises the first resistance R 1 and the second resistance R 2.As shown in Figure 6, the first end of the first resistance R 1 is connected with the first end of the first capacitor C 1, the second end of the first resistance R 1 is connected with the second end of the first capacitor C 1, the first end of the second resistance R 2 is connected respectively with the first end of the first resistance R 1 with the first end of the second capacitor C 2, and the second end of the second resistance R 2 is connected with the second end of the second capacitor C 2.
One end of sample circuit is connected with the AC of rectification circuit, and the other end is connected with main control unit Ctrol, for the alternating current of the AC of the rectification circuit of sampling.As shown in Figure 6, on the U line of the AC of rectification circuit and V line, be respectively arranged with current sensor 21, for the line current Iv on line current Iu and the V line of sampling on U line, and the line current Iv on the line current Iu on U line and V line is exported to main control unit Ctrol.
In Fig. 6, the VDC1 of the first resistance R 1 end represents the input of the working power of drive circuit 2, and the VDC2 that main control unit Ctrol connects represents the input of the working power of main control unit Ctrol.
The Intelligent Power Module (IPM) of the utility model embodiment is a three phase full bridge power device, is divided into six unit, and each unit is combined by IGBT and diodes in parallel.Its operation principle is: by Intelligent Power Module (IPM), DC inverter is become to the alternating current of frequency and voltage variable, for drive compression machine and blower fan.Control unit Ctrol sampling consuming parts 1(compressor or blower fan) input current, output PWM1-PWM6 control signal control Intelligent Power Module (IPM).
Fig. 7 is the schematic diagram that air-conditioning unit is controlled according to the utility model embodiment.As shown in Figure 7, the drive circuit 2 of the utility model embodiment adopts two closed-loop controls, its outer-loop is speed ring, speed reference Wn* is the tach signal of reception control unit, speed reference Wn* and the actual rotating speed Wr detecting do difference, and this difference obtains the reference value I* of interior ring through PI controller; Interior ring is electric current loop, its reference value I* is that outer shroud speed ring is given, reference value I* does difference with the actual electric current I detecting, this difference obtains compressor/blower fan three-phase phase voltage value Ux(x=a, b, c) reference value after PI controller, also for the frequency of drive compression machine/blower fan and the alternating voltage of voltage variable.Then adopt SPWM modulator approach, by Ux(x=a, b, c) and triangular carrier make comparisons, produce and control the pwm signal of IGBT.For each phase, the pwm signal of upper and lower bridge arm IGBT is complementary, i.e. conducting simultaneously.Wherein, upper brachium pontis IGBT comprises IGBT pipe Q1, Q3 and Q5, and lower brachium pontis IGBT comprises IGBT pipe Q2, Q4 and Q6.
It should be noted that, can in the computer system such as one group of computer executable instructions, carry out in the step shown in the flow chart of accompanying drawing, and, although there is shown logical order in flow process, but in some cases, can carry out shown or described step with the order being different from herein.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (8)
1. an air-conditioning unit, is characterized in that, comprising:
Consuming parts; And
Drive circuit, described drive circuit comprises DC side and AC, the DC side of described drive circuit is connected with direct current network, the AC of described drive circuit is connected with described consuming parts, for the direct current of the direct current network of described DC side being converted into the required alternating current of described consuming parts work.
2. air-conditioning unit according to claim 1, is characterized in that, described consuming parts comprises compressor and blower fan, and described drive circuit comprises:
Compressor drive circuit, the DC side of described compressor drive circuit is connected with direct current network, the AC of described compressor drive circuit is connected with described compressor, for the direct current of described direct current network being converted into the required alternating current of described compressor operating; And
Blower fan drive circuit, the DC side of described blower fan drive circuit is connected with described direct current network, and the AC of described blower fan drive circuit is connected with described blower fan, for the direct current of described direct current network being converted into the required alternating current of described blower fan work.
3. air-conditioning unit according to claim 1 and 2, is characterized in that, described air-conditioning unit also comprises:
DC load;
Main control unit, is connected respectively with described DC load with described drive circuit, for controlling described drive circuit and described DC load; And
Switching Power Supply, be connected respectively with described drive circuit, described DC load and described main control unit, for the direct current of described direct current network is converted into the first required direct current of described drive circuit works, the direct current of described direct current network is converted into the second required direct current of described DC load work, the direct current of described direct current network is converted into the 3rd required direct current of described main control unit work, wherein, described the first direct current, described the second direct current and described the 3rd galvanic voltage are less than the galvanic voltage of described direct current network.
4. air-conditioning unit according to claim 3, is characterized in that, described Switching Power Supply is inverse-excitation type switch power-supply, and described inverse-excitation type switch power-supply comprises:
Switch transformer, described switch transformer comprises primary side and primary side, the primary side of described switch transformer is connected with described direct current network, and the primary side of described switch transformer is connected respectively with described drive circuit, described DC load and described main control unit; And
Switching tube, is connected between described direct current network and the primary side of described switch transformer.
5. air-conditioning unit according to claim 4, is characterized in that, described switch transformer comprises:
Armature winding, is connected with described direct current network, for storing the direct current of described direct current network; And
Secondary winding, comprise the first sub-secondary winding, the second sub-secondary winding, the 3rd sub-secondary winding and the 4th sub-secondary winding, described the first sub-secondary winding is connected with described compressor drive circuit, described the second sub-secondary winding is connected with described blower fan drive circuit, described the 3rd sub-secondary winding is connected with described main control unit, and described the 4th sub-secondary winding is connected with described DC load.
6. air-conditioning unit according to claim 1, is characterized in that, described drive circuit comprises:
Rectification circuit, described rectification circuit comprises DC side and AC, and the DC side of described rectification circuit is connected with described direct current network, and the AC of described rectification circuit is connected with described consuming parts;
Storage capacitor, is connected to two terminals of described direct current network;
Grading resistor, in parallel with described storage capacitor, and be connected to two terminals of described direct current network; And
Sample circuit, one end is connected with the AC of described rectification circuit, and the other end is connected with main control unit, samples for the alternating current of the AC to described rectification circuit.
7. air-conditioning unit according to claim 6, is characterized in that,
Described storage capacitor comprises the first electric capacity and the second electric capacity, the first end of described the first electric capacity is connected with one end of described direct current network, the second end of described the first electric capacity is connected with the first end of described the second electric capacity, the second end of described the second electric capacity is connected with the other end of described direct current network
Described grading resistor comprises the first resistance and the second resistance, the first end of described the first resistance is connected with the first end of described the first electric capacity, the second end of described the first resistance is connected with the second end of described the first electric capacity, the first end of described the second resistance is connected respectively with the first end of described the first resistance with the first end of described the second electric capacity, and the second end of described the second resistance is connected with the second end of described the second electric capacity.
8. air-conditioning unit according to claim 6, is characterized in that, described rectification circuit is Intelligent Power Module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320860494.1U CN203691275U (en) | 2013-12-24 | 2013-12-24 | Air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320860494.1U CN203691275U (en) | 2013-12-24 | 2013-12-24 | Air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203691275U true CN203691275U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320860494.1U Expired - Lifetime CN203691275U (en) | 2013-12-24 | 2013-12-24 | Air conditioning unit |
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| CN (1) | CN203691275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734546A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air conditioning unit and control method thereof |
-
2013
- 2013-12-24 CN CN201320860494.1U patent/CN203691275U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734546A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air conditioning unit and control method thereof |
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Granted publication date: 20140702 |