CN104852457A - DC variable frequency fan system - Google Patents
DC variable frequency fan system Download PDFInfo
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- CN104852457A CN104852457A CN201510259679.0A CN201510259679A CN104852457A CN 104852457 A CN104852457 A CN 104852457A CN 201510259679 A CN201510259679 A CN 201510259679A CN 104852457 A CN104852457 A CN 104852457A
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- circuit
- frequency
- storage battery
- fan system
- solar
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The embodiment of the invention discloses a DC variable frequency fan system comprising a solar cell, a solar controller, a storage cell and a DC variable frequency fan. The solar controller is provided with a charging circuit, a discharge circuit and a control circuit. The DC variable frequency fan is provided with an inverter circuit and a blower motor. The charging circuit is connected between the solar cell and the storage cell. The discharging circuit is connected between the storage cell and the inverter circuit. The control circuit is respectively connected with the charging circuit, the discharging circuit and the storage cell. The inverter circuit is connected with the blower motor. A blower impeller comprises left and right end plates which are fixed on a rotating shaft. Multiple blades are distributed along the axial direction of the rotating shaft and clamped between the left and right end plates. The DC variable frequency fan system and subsystems are improved so that product performance can be effectively improved, and thus the DC variable frequency fan system has advantages of being environment-friendly, economic and convenient to use.
Description
Technical field
The present invention relates to variable-frequency fan technology, particularly relate to a kind of DC frequency-changing fan system and subsystem thereof.
Background technology
DC frequency-changing fan system is made up of parts such as solar cell, controller, storage battery, DC frequency-changing fans.There is certain defect in existing DC frequency-changing fan system: solar cell generally adopts polycrystalline silicon material, and its multi-source is in the material end to end of microelectronics industry, and metal impurities wherein and microdefect have had a strong impact on the photoelectric conversion efficiency of solar cell; Controller Lighting Protection Measures is ineffective, influential system security performance; Inevitably there is inconsistent situation in the capacity between multiple cell batteries of storage battery and self discharge, affects the life of storage battery; DC frequency-changing fan inverter circuit complex structure, frequency conversion effect is not ideal enough; Fan blade is the neat shape flushed, and when blower fan runs well, can produce whirlpool during airflow passes trailing edge, not only can affect the efficiency of blower fan, and can produce vibration & noise; Etc..In view of the upper deficiency existed of existing DC frequency-changing fan system design, be thus necessary to be improved.
Summary of the invention
For the defect that prior art exists, the object of the embodiment of the present invention is to improve DC frequency-changing fan system or subsystem, so that the performance of improving product at least in one aspect.
For solving above technical problem, the embodiment of the present invention provides a kind of DC frequency-changing fan system, comprise solar cell, controller for solar, storage battery and DC frequency-changing fan, controller for solar has charging circuit, discharge circuit and control circuit, DC frequency-changing fan has inverter circuit and blower motor, charging circuit is connected between solar cell and storage battery, discharge circuit is connected between storage battery and inverter circuit, control circuit connects charging circuit respectively, discharge circuit and storage battery, inverter circuit is connected to blower motor, draught fan impeller comprises the left and right end plate be fixed in rotating shaft, more blades along rotating shaft axial distribution and be folded between the end plate of left and right.
Compared with prior art, the embodiment of the present invention is improved DC frequency-changing fan system or subsystem, effectively can improve properties of product, there is environmental protection, economy, the advantage such as easy to use: (1) adopts thin-film solar cells, lightweight, efficient, high-specific-power and consumptive material is few; (2) controller can effectively lightning protection, improves system safety performance; (3) storage battery can ensure again the activity of storage battery while carrying out charging, and avoids storage battery and deposits, thus extend the life-span of storage battery largely; (4) DC frequency-changing fan inverter circuit controls power tube by pwm signal, and structure is simple, better performances; (5) improve blade construction, the whirlpool produced during airflow passes trailing edge is smashed, thus effectively reduces flow resistance, reduces vibration & noise, improves fan efficiency.
Accompanying drawing explanation
Fig. 1 is the theory diagram of DC frequency-changing fan system of the present invention;
Fig. 2 is the structural representation of thin-film solar cells of the present invention;
Fig. 3 is the schematic block circuit diagram of controller of the present invention;
Fig. 4 is the schematic block circuit diagram of storage battery of the present invention;
Fig. 5 is the schematic block circuit diagram of inverter circuit of the present invention;
Fig. 6 a is the left view of fan impeller structure of the present invention;
Fig. 6 b is the front view of fan impeller structure of the present invention;
Fig. 7 a is the left view of the embodiment of the present invention one fan blade;
Fig. 7 b is the A direction view of the embodiment of the present invention one fan blade;
Fig. 8 a is the left view of the embodiment of the present invention two fan blade;
Fig. 8 b is the B direction view of the embodiment of the present invention two fan blade.
Embodiment
In order to understand know-why and the course of work of the embodiment of the present invention better, describe the present invention further below in conjunction with drawings and the specific embodiments.
See Fig. 1, the theory diagram of DC frequency-changing fan system of the present invention is shown.This DC frequency-changing fan system (hereinafter referred to as system) comprises thin-film solar cells 100, controller for solar 200, storage battery 300, DC frequency-changing fan 400, solar cell 100 is preferably thin-film solar cells, controller for solar 200 has charging circuit 210, discharge circuit 230 and control circuit 220, DC frequency-changing fan 400 has inverter circuit 410 and blower motor 420, charging circuit 210 is connected between solar cell 100 and storage battery 300, discharge circuit 230 is connected between storage battery 300 and inverter circuit 410, control circuit 220 connects charging circuit 210 respectively, discharge circuit 220 and storage battery 300, inverter circuit 410 is connected to blower motor 420.
In Fig. 1, the core of thin-film solar cells 100 native system, its effect is that the radianting capacity of the sun is converted to electric energy, or is sent in storage battery and stores, or promotes DC frequency-changing fan 400 and work.The effect of controller for solar 200 is the operating states controlling whole system, and storage battery is played to the effect of additives for overcharge protection, over.The effect of storage battery 300 is the electrical power storage sent by solar cell when there being illumination, and it's time to needs to discharge again.DC frequency-changing fan 400, can speed governing easily as AC load.
The present embodiment includes but are not limited to following characteristics: (1) adopts thin-film solar cells 100, contributes to lightweight, efficient, high-specific-power and consumptive material is few; (2) controller 200 can effectively lightning protection, improves system safety performance; (3) storage battery 300 is under the prerequisite of not losing solar energy switching energy, improves the charge efficiency of batteries and the efficiency of actual of sun-generated electric power, extends the useful life of batteries; (4) DC frequency-changing fan inverter circuit controls power tube by pwm signal, and structure is simple, better performances; (5) improve blade construction, the whirlpool produced during airflow passes trailing edge is smashed, thus effectively reduces flow resistance, reduces vibration & noise, improves fan efficiency.Below be described for each several part further.
See Fig. 2, the structural representation of thin-film solar cells of the present invention is shown.This thin-film solar cells 100 comprises the first electro-conductive glass substrate 110, deposit absorbent layer 120, resilient coating 130, conductive silver glue 140 and the second electro-conductive glass substrate 150, wherein: the first electro-conductive glass substrate 110, deposit absorbent layer 120, resilient coating 130, conductive silver glue 140 and the second electro-conductive glass substrate 150 from top to bottom set gradually; Extraction electrode (scheming not shown) in first electro-conductive glass substrate 110 and the second electro-conductive glass substrate 150, be generally that the first electro-conductive glass substrate 110 draws positive electrode above, the second electro-conductive glass substrate 150 draws negative electrode above.
In Fig. 2, the specification of above-mentioned each layer can be: the length of the first electro-conductive glass substrate 110, second electro-conductive glass substrate 150 is 40mm, and width is 15mm, and thickness is 3mm; Deposit absorbent layer 120 is made for semiconductor nano material, and length is 30mm, and width is 15mm, and thickness is 2 × 10
-3mm; Resilient coating 130 is In
2s
3material is made, and length is 25mm, and width is 15mm, and thickness is 4 × 10
-3mm; The length of conductive silver glue 140 is 20mm, and width is 15mm, and thickness is 2 × 10
-3mm.Setting like this, material consumption is few, manufactures energy consumption low, and has excellent effect at the aspect of performance such as voltage improving battery.
See Fig. 3, the schematic block circuit diagram of controller of the present invention is shown.This controller 200 comprises charging circuit 210, discharge circuit 230, control circuit 220 and lightning protection circuit 240, and charging circuit 210, discharge circuit 230 and storage battery 300 are in parallel, and lightning protection circuit 240 and storage battery 300 are connected.Owing to adding lightning protection circuit 240, the thunder-strike current flowing through storage battery 300 greatly reduces.
Lightning protection circuit 240 in the present embodiment is specially lightning protection inductance, and the thunder-strike current flowing through storage battery 300 after adding this lightning protection inductance greatly reduces; Meanwhile, the induction reactance of this lightning protection inductance much larger than accumulator internal resistance, thus at storage battery 300 two ends a point residual voltage also greatly reduce, also enhance the lightning protection capability of system like this.In addition, also can to connect respectively lightning protection inductance in charging circuit 210, discharge circuit 230, to improve lightning protection capability further.
See Fig. 4, the schematic block circuit diagram of storage battery of the present invention is shown.This storage battery 300 comprises accumulator body 310, battery management module 320, data/address bus 330, auxiliary power supply bus 350 and auxiliary charging control line 340, and wherein the positive pole of accumulator body 310 is connected with battery management module 320 respectively with negative pole.Further illustrate as follows.
In Fig. 4, this battery management module 320 comprises the detection control unit 321 be connected respectively with the positive pole of accumulator body 310 and negative pole and the supplemental charging unit 322 be connected respectively with negative pole with the positive pole of accumulator body 310, and detection control unit 201 is connected with supplemental charging unit 202; Data/address bus 330 is connected with detection control unit 321; Auxiliary power supply bus 350 is connected with supplemental charging unit 322; Auxiliary charging control line 340 is connected with the output of detection control unit 321; Detection control unit 321, for detecting the running status of accumulator body 310 in real time, when the real-time voltage of accumulator body 310 is less than threshold voltage, is charged by auxiliary power supply bus 350 pairs of accumulator bodies 310 by supplemental charging unit 322.
In the present embodiment, detection control unit 321 can detect the state of accumulator body 310, and carry out discharge and recharge operation to this accumulator body 310 under the coordinative role of supplemental charging unit 322, thus storage battery entirety is made all to remain on desirable balance of voltage state.Storage battery so both can be made to keep active, the state of the balance of voltage can have been reached again, and be unlikely to occur to overcharge or the state of charge less, which thereby enhance the life-span of storage battery.
See Fig. 5, the inverter circuit of DC frequency-changing fan of the present invention is shown.This inverter circuit 410 comprises power tube driving chip, and this power tube driving chip is connected to microcontroller circuit (MCU/DSP), so that the pulse width modulating signal exported according to microcontroller circuit, drives corresponding power tube alternate conduction and shutoff.Concrete, described inverter circuit 410 comprises six power tube Q1 ~ Q6, and these six power tubes are divided into three groups, and every group power controls a phase winding of blower fan 420.
The concrete connected mode of each power tube is: the source electrode of power tube Q1, Q2, Q3 connects one end of DC power supply jointly, the drain electrode of power tube Q4, Q5, Q6 connects the other end of DC power supply jointly, the tie point of the drain electrode of power tube Q1 and the source electrode of power tube Q4 connects the U phase terminal of motor, the tie point of the drain electrode of power tube Q2 and the source electrode of power tube Q5 connects the V phase terminal of motor, and the drain electrode of power tube Q3 and the source electrode tie point of power tube Q6 are given a dinner for a visitor from afar the W phase terminal of machine 420 motor; The grid of power tube Q1, Q2, Q3, Q4, Q5, Q6 connects an output of power tube driving chip respectively, and each input of this power tube driving chip controls by output pulse width conditioning signal PWM1, PWM2, PWM3, PWM4, PWM5, PWM6 Zhong mono-tunnel of microcontroller circuit respectively.These six power tube Q1 ~ Q6 source electrode and drain electrode between corresponding access diode D1 ~ D6.
During start, microprocessor produces corresponding 6 road pulse width modulating signals according to the rotation speed of fan of setting, i.e. drive singal PWM1 ~ PWM6; 6 power tube (MOSFET or IGBT) Q1 ~ Q6 of inverter 410 are driven by power tube driving chip; The alternate conduction of these power tubes and shutoff, produce three-phase modulations waveform, output voltage is adjustable, the three-phase alternating current of changeable frequency, outputs to U, V, W terminals of blower fan 420 motor winding, thus realizes the stepless frequency control of blower fan 420 motor.
See Fig. 6 a ~ Fig. 6 b, fan impeller structure of the present invention is shown.This draught fan impeller comprises left and right end plate 422 (only one end being shown in figure) and more blades 421, wherein: left and right end plate 422 is separately fixed in a rotating shaft (scheming not shown); All blades 421, they to be folded between left and right end plate 422 along the axial distribution of rotating shaft respectively.Especially, blade 421 longitudinally curves curve-like (preferably curving arc-shaped) perpendicular to the cross section edge of rotating shaft, and blade 421 thickness reduces to blade afterbody gradually from root of blade, be conducive to keeping good aerodynamic characteristic and good structural strength.This draught fan impeller improves blade construction, and the whirlpool produced during airflow passes trailing edge is smashed, thus effectively reduces flow resistance, reduces vibration & noise, improves fan efficiency, illustrates further below.
See Fig. 7 a ~ Fig. 7 b, the embodiment of the present invention one fan blade structure is shown.The trailing edge 4213 of every sheet blade 421 is distributed with Series Blade small rut 4211, and these small ruts 4211 can be circle, square etc.Air-flow is entered by the leading edge of blade 421 under the effect of rotary blade, when the trailing edge of airflow passes blade 421, reduces the whirlpool of blade afterbody under the effect of blade small rut 4211, is smashed by original overall air-flow simultaneously, thus adds the disturbance of air-flow; The Maelstrom produced after so just air-flow being flow through blade is divided into little whirlpool, thereby reduces resistance, vibration & noise.Be understandable that, the present embodiment also can arrange some blade small ruts 4211 in the leading edge 4212 of every sheet blade 421 simultaneously, is smashed by the whirlpool that trailing edge 4213 produces by small rut structure; Meanwhile, blade small rut 4211 whirlpool that also can will produce during airflow passes blade inlet edge well.Certainly, also only blade small rut 4211 can be set in the leading edge 4212 of blade 421.
See Fig. 8 a ~ Fig. 8 b, the embodiment of the present invention two fan blade structure is shown.And the trailing edge 4213 of every sheet blade 421 is provided with some blade sawtooth 4214, the height of its Leaf sawtooth 4214 is 20% ~ 35% with the ratio of the width of blade 4214, and the angle of hook of blade sawtooth 4214 is 40 ° ~ 120 °; The tooth top 42142 of blade sawtooth 4214 is flat tooth top, and the teeth groove 42141 of blade sawtooth 4214 is V-notch, certainly also can adopt other shape.In addition, also the leading edge 4212 of every sheet blade 421 can be provided with some blade sawtooth 4214 simultaneously; Or, also only blade sawtooth 4214 can be set in the leading edge 4212 of blade 421.The present embodiment arranges sawtooth 4214 on blade 421, and its operation principle is identical with precedent, does not repeat them here.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can make possible variation and amendment, the scope that therefore protection scope of the present invention should define with the claims in the present invention is as the criterion.
Claims (5)
1. a DC frequency-changing fan system, it is characterized in that, comprise solar cell, controller for solar, storage battery and DC frequency-changing fan, controller for solar has charging circuit, discharge circuit and control circuit, DC frequency-changing fan has inverter circuit and blower motor, charging circuit is connected between solar cell and storage battery, discharge circuit is connected between storage battery and inverter circuit, control circuit connects charging circuit respectively, discharge circuit and storage battery, inverter circuit is connected to blower motor, draught fan impeller comprises the left and right end plate be fixed in rotating shaft, more blades along rotating shaft axial distribution and be folded between the end plate of left and right.
2. DC frequency-changing fan system as claimed in claim 1, it is characterized in that, inverter circuit comprises power tube driving chip and six power tubes: power tube driving chip is connected to microprocessor, to drive corresponding power tube alternate conduction and shutoff according to the pulse width modulating signal of microprocessor output; Six power tubes are divided into three groups, and every group power controls a phase winding of blower motor.
3. DC frequency-changing fan system as claimed in claim 2, it is characterized in that, controller for solar comprises lightning protection circuit, this lightning protection circuit and storage battery series connection.
4. DC frequency-changing fan system as claimed in claim 3, it is characterized in that, solar cell is thin-film solar cells.
5. DC frequency-changing fan system as claimed in claim 4, it is characterized in that, storage battery comprises accumulator body, battery management module, data/address bus, auxiliary power supply bus and auxiliary charging control line, and wherein the positive pole of accumulator body is connected with battery management module respectively with negative pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259679.0A CN104852457A (en) | 2015-05-20 | 2015-05-20 | DC variable frequency fan system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259679.0A CN104852457A (en) | 2015-05-20 | 2015-05-20 | DC variable frequency fan system |
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| Publication Number | Publication Date |
|---|---|
| CN104852457A true CN104852457A (en) | 2015-08-19 |
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ID=53851894
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510259679.0A Pending CN104852457A (en) | 2015-05-20 | 2015-05-20 | DC variable frequency fan system |
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| Country | Link |
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| CN (1) | CN104852457A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105797510A (en) * | 2016-05-16 | 2016-07-27 | 德州市好宜居木结构有限公司 | Industrial dust-collecting and environment-friendly device |
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|---|---|---|---|---|
| CN201910657U (en) * | 2010-06-11 | 2011-07-27 | 燕山大学 | Solar energy power switching controller |
| CN201937313U (en) * | 2011-03-09 | 2011-08-17 | 苏州市职业大学 | Solar-powered fan filter unit system |
| CN202042930U (en) * | 2011-05-31 | 2011-11-16 | 惠州市亿能电子有限公司 | Battery management system for solar air conditioner |
| CN202059347U (en) * | 2011-04-12 | 2011-11-30 | 美的集团武汉制冷设备有限公司 | DC variable frequency air conditioner with solar energy cell |
-
2015
- 2015-05-20 CN CN201510259679.0A patent/CN104852457A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201910657U (en) * | 2010-06-11 | 2011-07-27 | 燕山大学 | Solar energy power switching controller |
| CN201937313U (en) * | 2011-03-09 | 2011-08-17 | 苏州市职业大学 | Solar-powered fan filter unit system |
| CN202059347U (en) * | 2011-04-12 | 2011-11-30 | 美的集团武汉制冷设备有限公司 | DC variable frequency air conditioner with solar energy cell |
| CN202042930U (en) * | 2011-05-31 | 2011-11-16 | 惠州市亿能电子有限公司 | Battery management system for solar air conditioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105797510A (en) * | 2016-05-16 | 2016-07-27 | 德州市好宜居木结构有限公司 | Industrial dust-collecting and environment-friendly device |
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Application publication date: 20150819 |
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