CN204511921U - A kind of pressure regulating energy-saving electric fan - Google Patents
A kind of pressure regulating energy-saving electric fan Download PDFInfo
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- CN204511921U CN204511921U CN201520046463.1U CN201520046463U CN204511921U CN 204511921 U CN204511921 U CN 204511921U CN 201520046463 U CN201520046463 U CN 201520046463U CN 204511921 U CN204511921 U CN 204511921U
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Abstract
The utility model discloses a kind of pressure regulating energy-saving electric fan, and comprise bridge rectifier unit, fast switching unit and motor, described motor comprises threephase stator coil unit and rotor unit; Bridge rectifier unit comprises rectifier bridge, and the input end of rectifier bridge connects civil power, and the output terminal of rectifier bridge is parallel with mu balanced circuit and high-voltage capacitance; Described quick switching unit comprises single-chip microcomputer, motor control chip and DC drive circuit, and the pwm signal output terminal of single-chip microcomputer is connected with the input end of motor control chip; Described DC drive circuit comprises three groups of switch modules, each switch module is in series by two transistor collectors and emitter, switch module is parallel to the output terminal of described bridge rectifier unit, the base stage of each triode of switch module is connected to the different pins of motor control chip, and the common point of switch module two triode connects the different winding connection ends of threephase stator coil unit.The efficiency of this pressure regulating energy-saving electric fan is high, noise is little.
Description
Technical field
The utility model relates to electric fan field, particularly relates to a kind of intelligent pressure-adjustable electric fan.
Background technique
Current fan assembly can be DC fan and the large type of ac fan two, and this two types fan has all kinds of size, form and wind speed to supply customer selecting.These two kinds of fans respectively have pluses and minuses, and the efficiency height of DC fan is quiet again, but need add and join Power convert; And ac fan is not only easy for installation with low cost, but low, the dry sound of efficiency is large.The Problems existing of existing fan in view of the above, is necessary to improve existing fan.
Model utility content
Technical problem to be solved in the utility model is: provide the pressure regulating energy-saving electric fan that a kind of efficiency is high, noise is little.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of pressure regulating energy-saving electric fan, comprise bridge rectifier unit, fast switching unit and motor, described motor comprises threephase stator coil unit and rotor unit;
Described bridge rectifier unit comprises rectifier bridge, and the input end of rectifier bridge connects civil power, and the output terminal of rectifier bridge is parallel with mu balanced circuit and high-voltage capacitance;
Described quick switching unit comprises single-chip microcomputer, motor control chip and DC drive circuit, and the pwm signal output terminal of described single-chip microcomputer is connected with the input end of motor control chip;
Described DC drive circuit comprises three groups of switch modules, each switch module is in series by two transistor collectors and emitter, described switch module is parallel to the output terminal of described bridge rectifier unit, the base stage of each triode of switch module is connected to the different pins of motor control chip, and the common point of switch module two triode connects the different winding connection ends of threephase stator coil unit.
Further, the silicon steel plate of described threephase stator coil unit has 9 wire casings.
Further, the output end voltage of rectifier bridge is stable at DC310V by described mu balanced circuit and high-voltage capacitance.
Further, described motor is external rotor electric machine, and its rotor is combined by flabellum, iron-clad and magnetic stripe.
Further, also comprise alarm buzzer, described alarm buzzer is connected with single-chip microcomputer by light lotus root relay.
The beneficial effects of the utility model are: in view of DC fan efficiency height is quiet again, direct current mode adopted by rotor and the stator of pressure regulating energy-saving electric fan of the present utility model, and take three-phase structure, raise the efficiency and muting function, and bridge rectifier unit exports as high tension voltage, make electric current needed for running little because voltage is high, required copper cash can be very thin, identical power can use copper cash that must be fewer, not only reduces costs but also reduced volume.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the bridge rectifier unit of the utility model pressure regulating energy-saving electric fan;
Fig. 2 is quick switching unit and the threephase stator coil unit circuit theory diagrams of the utility model pressure regulating energy-saving electric fan;
Fig. 3 is the direct current coiling schematic diagram of the utility model pressure regulating energy-saving electric fan;
The sequential square wave figure that the quick switching unit of Fig. 4 exports.
Embodiment
By describing technology contents of the present utility model in detail, realized object and effect, accompanying drawing is coordinated to be explained below in conjunction with mode of execution.
The design of the utility model most critical is: it is direct current that bridge rectifier unit will exchange whole, switch to the quick square wave of DC to threephase stator coil unit through quick switching unit again, to produce the heat treatment of continuous NS level, with the NS level magnet on rotor unit, there is the phenomenon that there is a natural attraction between the sexes for two like magnetic poles repel each other, and make rotor turns and then drive electric fan, thus improve electric energy utilization efficiency and muting function.
Please refer to Fig. 1 to Fig. 4, a kind of pressure regulating energy-saving electric fan, comprise bridge rectifier unit, fast switching unit and motor, described motor comprises threephase stator coil unit and rotor unit;
Described bridge rectifier unit comprises rectifier bridge, and the input end of rectifier bridge connects civil power, and the output terminal of rectifier bridge is parallel with mu balanced circuit and high-voltage capacitance;
Described quick switching unit comprises single-chip microcomputer, motor control chip and DC drive circuit, and the pwm signal output terminal of described single-chip microcomputer is connected with the input end of motor control chip;
Described DC drive circuit comprises three groups of switch modules, each switch module is in series by two transistor collectors and emitter, described switch module is parallel to the output terminal of described bridge rectifier unit, the base stage of each triode of switch module is connected to the different pins of motor control chip, and the common point of switch module two triode connects the different winding connection ends of threephase stator coil unit.
As shown in Figure 1, to utilize in bridge rectifier and Fig. 1 D1, D2, D3, D4 by whole for Ac be direct current, coordinate high-voltage capacitance C3 to be diminished by the ripple of direct current, then through power supply integrated regulator (ZD1), to provide the DC electrical source needed for quick switching unit, about DC310V;
As shown in Figure 2, described single-chip microcomputer is a special motor single-chip microcomputer, DC drive circuit is connected with bridge rectifier unit output terminal, for threephase stator coil unit provides required power supply, the coiling Placement of threephase stator coil unit as shown in Figure 3, quick switching unit produce continuous, steady and nonoverlapping three groups different time the direct current square wave that exports, point 8 orders (as shown in Figure 4) give winding (as a Fig. 2) positive supply and a winding negative supply respectively.Quick switching unit can accept the pulse of 20-30KHZ frequency, adjusts its output speed, is full-speed operation when dutycycle is 100%, is half-speed operation when dutycycle is 50%, is do not operate when dutycycle is 0%.Each circulation has a FG signal to export, with the current running speed of other these devices of device of accusing when in place.Have an output can control the conducting of light lotus root relay to notify other devices or alarm buzzer when running speed is slower than setting, this device occurs abnormal.
The silicon steel plate of threephase stator coil unit is the silicon steel plate of 9 grooves, according to the coiling of Fig. 4 mode, can produce magnetic field when disturbing when line has voltage, with the magnet of rotor, having the two like magnetic poles repel each other phenomenon that there is a natural attraction between the sexes, and makes rotor turns and then drive electric fan.
From foregoing description, the beneficial effects of the utility model are: the utility model not only has the advantage and DC fan that ac fan cost again easy for installation is low, the high benefit quiet again of efficiency.
Further, the output end voltage of rectifier bridge is stable at DC310V by described mu balanced circuit and high-voltage capacitance.
Seen from the above description, the output voltage of described rectification bridge output end is high voltage, and therefore identical power can use thinner copper cash, not only reduces costs, also the volume of contracting small third-line areas stator coil unit.
Further, described motor is external rotor electric machine, and its rotor is combined by flabellum, iron-clad and magnetic stripe.Be fixed on by flabellum outside iron-clad, magnetic stripe is close within iron-clad, and magnetic stripe can be changed into 3 pairs of NS poles, 4 pairs of NS levels or 5 pairs of NS levels through magnetizing, the groove number of logarithm and stator, and the least common multiple produced is larger, and this device uses 9 groove stators, therefore selects 5 pairs of NS levels.Because the least common multiple of 9 and 5 is 45, and 3 pairs of NS poles are 9,4 pairs of NS levels are 36.
Seen from the above description, the smoothness of this pressure regulating energy-saving electric fan is high, and all circuit thickness, through sophisticated design, can be hidden into fan inside, not affect installation.
Further, described voltage regulation function electric fan also comprises alarm buzzer, and described alarm buzzer is connected with single-chip microcomputer by light lotus root relay.Single-chip microcomputer when in place each circulation have one FG signal export, with the current running speed of other these devices of device of accusing when rotor speed is too low or stop operating then single-chip microcomputer have low level output, make the conducting of light lotus root relay, to notify other devices or alarm buzzer.
In sum, the pressure regulating energy-saving electric fan that the utility model provides first utilizes bridge rectifier unit, it can exchange whole is direct current, pass through quick switching unit again, direct current is transferred to direct current square wave, use to be supplied to three-phase fan electromotor, therefore the advantage that ac fan cost again easy for installation is low is not only had, also there is the high benefit quiet again of DC fan efficiency, further, road thickness is through sophisticated design, fan inside can be hidden into, do not affect installation, and, there is an output can control the conducting of light lotus root relay to notify other devices or alarm buzzer when running speed is slower than setting.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalents utilizing the utility model specification and accompanying drawing content to do; or be directly or indirectly used in relevant technical field, be all in like manner included in scope of patent protection of the present utility model.
Claims (5)
1. a pressure regulating energy-saving electric fan, is characterized in that, comprise bridge rectifier unit, fast switching unit and motor, described motor comprises threephase stator coil unit and rotor unit;
Described bridge rectifier unit comprises rectifier bridge, and the input end of rectifier bridge connects civil power, and the output terminal of rectifier bridge is parallel with mu balanced circuit and high-voltage capacitance;
Described quick switching unit comprises single-chip microcomputer, motor control chip and DC drive circuit, and the pwm signal output terminal of described single-chip microcomputer is connected with the input end of motor control chip;
Described DC drive circuit comprises three groups of switch modules, each switch module is in series by two transistor collectors and emitter, described switch module is parallel to the output terminal of described bridge rectifier unit, the base stage of each triode of switch module is connected to the different pins of motor control chip, and the common point of switch module two triode connects the different winding connection ends of threephase stator coil unit.
2. pressure regulating energy-saving electric fan according to claim 1, is characterized in that, the silicon steel plate of described threephase stator coil unit has 9 wire casings.
3. pressure regulating energy-saving electric fan according to claim 1, is characterized in that, the output end voltage of rectifier bridge is stable at DC310V by described mu balanced circuit and high-voltage capacitance.
4. pressure regulating energy-saving electric fan according to claim 3, is characterized in that, described motor is external rotor electric machine, and its rotor is combined by flabellum, iron-clad and magnetic stripe.
5., according to the arbitrary described pressure regulating energy-saving electric fan of Claims 1-4, it is characterized in that, also comprise alarm buzzer, described alarm buzzer is connected with single-chip microcomputer by light lotus root relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520046463.1U CN204511921U (en) | 2015-01-22 | 2015-01-22 | A kind of pressure regulating energy-saving electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520046463.1U CN204511921U (en) | 2015-01-22 | 2015-01-22 | A kind of pressure regulating energy-saving electric fan |
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| Publication Number | Publication Date |
|---|---|
| CN204511921U true CN204511921U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520046463.1U Active CN204511921U (en) | 2015-01-22 | 2015-01-22 | A kind of pressure regulating energy-saving electric fan |
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| Country | Link |
|---|---|
| CN (1) | CN204511921U (en) |
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2015
- 2015-01-22 CN CN201520046463.1U patent/CN204511921U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180718 Address after: 518000 Longhua New District, Shenzhen, Guangdong, Songyuan street, Songyuan Xiamen community, DBU residential group, 5 floor, 4 / F, A building, innovation industrial park. Co-patentee after: Huge Electric Machine Co., Ltd of Shenzhen three Patentee after: Three giant science and technology motor (Shenzhen) Co., Ltd. Address before: 518110 Innovation Industrial Park, Guanzhong Road, Guanlan Town, Baoan District, Shenzhen, Guangdong Patentee before: Huge Electric Machine Co., Ltd of Shenzhen three |