CN2888742Y - DC/AC inverter for AC motor and water pump using the inverter - Google Patents
DC/AC inverter for AC motor and water pump using the inverter Download PDFInfo
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- CN2888742Y CN2888742Y CN 200620056811 CN200620056811U CN2888742Y CN 2888742 Y CN2888742 Y CN 2888742Y CN 200620056811 CN200620056811 CN 200620056811 CN 200620056811 U CN200620056811 U CN 200620056811U CN 2888742 Y CN2888742 Y CN 2888742Y
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 230000010355 oscillation Effects 0.000 claims abstract description 19
- 230000003321 amplification Effects 0.000 claims abstract description 10
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 230000010356 wave oscillation Effects 0.000 claims 2
- 230000007547 defect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 230000002950 deficient Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
一种用于交流电机的DC/AC逆变器及采用该逆变器的水泵，DC/AC逆变器包括壳体和安装于壳体内的机芯，所述机芯包括：一振荡及控制单元，该单元工作时输出频率为40－70Hz的正弦波信号；一放大处理单元；以及，一驱动单元，该驱动单元的两个输入端分别连接于所述放大处理单元的两个输出端，该驱动单元的两个输出端给交流电机供电。本DC/AC逆变器可与30V以下的交流电机或交流水泵配合使用，应用于只能使用直流电的场合，可有效克服使用无刷直流电机扭力小、扬程低，而使用有刷直流电机使用寿命短的缺陷。
A DC/AC inverter for an AC motor and a water pump using the inverter, the DC/AC inverter includes a housing and a movement installed in the housing, the movement includes: an oscillation and control unit, the unit outputs a sine wave signal with a frequency of 40-70Hz when working; an amplification processing unit; and a drive unit, the two input ends of the drive unit are respectively connected to the two output ends of the amplification processing unit, and the two output ends of the drive unit supply power to the AC motor. The DC/AC inverter can be used in conjunction with an AC motor or AC water pump below 30V, and is applied to occasions where only DC power can be used, and can effectively overcome the defects of low torque and low head when using a brushless DC motor, and short service life when using a brushed DC motor.
Description
Technical field
The utility model relates to the DC/AC inverter, the particularly a kind of DC/AC inverter of alternating current machine and water pump that adopts this DC/AC inverter of being used for.
Background technology
At present, in the occasion that can only use DC power supply, for example, use solar powered out of doors or since security reason can only use occasions such as direct current, use water spray, fountain product, the general employing of the motor of its water pump is brushless and the brush direct current machine is arranged, and brshless DC motor torsion is little, lift is low, and has the brush direct current machine short useful life.
In the water spray of AC-less power, fountain product, do not see the relevant application report that adopts the water pump of alternating current machine.
Summary of the invention
The purpose of this utility model provides a kind of DC/AC inverter that is used for alternating current machine, this inverter combines with alternating current machine and is applied to use galvanic occasion, can effectively overcome and use that brshless DC motor torsion is little, lift is low, short defective in brush direct current machine useful life be arranged and use.
Another purpose of the present utility model provides a kind of above-mentioned water pump that is used for the DC/AC inverter of alternating current machine that adopts, and this water pump can be used for open air etc. not to be had in the water spray or fountain product of AC power, and the lift height, long service life.
The utility model is used for the DC/AC inverter of alternating current machine, comprises housing and is installed on the interior movement of housing, and described movement comprises:
One vibration and control unit, output frequency is the sine wave signal of 40-70Hz during this cell operation, and controls the time of sine wave output signal automatically, and the variation of controlling the sine-wave oscillation frequency automatically;
One magnification processing, this magnification processing is amplified the sine wave signal of described vibration and control unit output and anti-phase processing, from two opposite sine wave signals of outputs difference output phase; And,
One driver element, two inputs of this driver element are connected to two outputs of described magnification processing, and two outputs of this driver element are powered to alternating current machine.
Adopt the above-mentioned water pump that is used for the DC/AC inverter of alternating current machine to comprise the pump housing, be installed on the alternating current machine in the pump housing and be installed on impeller in the alternating current machine rotating shaft, above-mentioned DC/AC inverter is installed in pump body, fill marine glue between the movement of this DC/AC inverter and the casing, two power supply terminals of the described alternating current machine of output termination of inverter, the input termination external dc power of inverter.
Compared with prior art, this DC/AC inverter can be used with the alternating current machine below the 30V, be applied to use galvanic occasion, can effectively overcome and use that brshless DC motor torsion is little, lift is low, short defective in brush direct current machine useful life is arranged and use.Its input direct voltage can be designed to DC3V-DC30V as required, and output AC voltage can be designed to AC3V-AC30V as required, and frequency of oscillation can be designed to 40Hz-70Hz according to product demand.
This DC/AC inverter with exchange water pump and cooperate the water pump make, can be widely used in the solar powered grade of outdoor use does not have to have the lift height, characteristics such as long service life in the water spray or fountain product of AC power.
Description of drawings
Fig. 1 is the structural representation of present embodiment DC/AC inverter;
Fig. 2 is its schematic block circuit diagram;
Fig. 3 is its circuit diagram;
Fig. 4 is the schematic diagram of Fig. 1 DC/AC inverter and water pump mating reaction;
Fig. 5 is the structural representation of the water pump of employing Fig. 1 DC/AC inverter.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Shown in Fig. 1-2, the DC/AC inverter that originally is used for alternating current machine comprises housing 2 and is installed on the interior movement 1 of housing that fill marine glue 3 between movement 1 and the casing 2, described movement 1 comprises:
One vibration and control unit 11, output frequency is the sine wave signal of 40-70Hz when this vibration and control unit 11 work, and controls the time of sine wave output signal automatically, and the variation of controlling the sine-wave oscillation frequency automatically;
One magnification processing 12, this magnification processing 12 is amplified the sine wave signal of described vibration and control unit 11 outputs and anti-phase processing, from two opposite sine wave signals of outputs difference output phase; And,
One driver element 13, two inputs of this driver element 13 are connected to two outputs of described magnification processing 12, and two outputs of this driver element 13 are powered to alternating current machine.
Fig. 3 is the circuit diagram of present embodiment DC/AC inverter.With reference to Fig. 3, vibration and control unit 11 comprise integrated circuit U1, U1 adopts LMY-01,1 pin of integrated circuit U1 meets working power and filter capacitor C1, C2, meet oscillation resistance R2 between 3 pin of integrated circuit U1 and 4 pin, 5 pin meet oscillating capacitance C3 to ground, 6 pin meet delay capacitor C4 and arrive ground, and 8 pin and 9 pin connect highest frequency and adjust resistance R 6 to ground, and 10 pin and 11 pin connect the startup frequency and adjust resistance R 5 to ground, 12 pin of integrated circuit U1 are the oscillator signal output, vibration is with lower hunting of frequency when starting, and after the time-delay several seconds, frequency raises gradually, till the frequency that rises to setting, the frequency rise time is the several seconds.The size that changes oscillation resistance R2 and oscillating capacitance C3 can change the frequency of oscillation of U1, and the duration of oscillation of U1 is by delay capacitor C4 control, and the size that changes the C4 capacity can change the speed in C4 charging interval, thus the duration of oscillation of control U1.In addition, 13 pin of U1 are output, when U1 vibrates, 13 pin of U1 are low level, when U1 arrives the setting-up time failure of oscillations owing to the delay circuit Control work, 13 pin output high level is so in application, can realize other controlled function at element such as the external triode of 13 pin of this U1, relay.Magnification processing 12 adopts integrated circuit LMY-02 (being the U2 among Fig. 3), and 2 pin of integrated circuit U2 are signal input part, and 4 pin and 6 pin are signal output part.Driver element 13 adopts the difference discharge road of being made up of pliotron Q1～Q4, diode D1～D2, resistance R 8～R11 etc., with thinking that alternating current motor provides enough big drive current.Vibration and control unit 11 produce the sine wave signal of 40-70Hz, be coupled to 2 pin of U2 through capacitor C 6 from the 12 pin output of U1, after integrated circuit U2 amplification, anti-phase processing, export two sine wave signals that phase place is opposite respectively from 4 pin and 6 pin of U2, and be coupled to two inputs of differential amplifier circuit respectively, amplify the work of rear drive alternating current machine.
Vibration and control unit 11, magnification processing 12 and driver element 13 also can adopt other IC with identical function or circuit.
Vibration of this circuit and control unit 11 have designed oscillating circuit and have started frequency adjustment resistance R 5 and highest frequency adjustment resistance R 6, alternating current machine starts when frequency is low, can be because the low torsion that makes of frequency becomes big, help electric motor starting, after starting, promote frequency more gradually, can make the alternating current machine water pump reach high-lift and big flow.
Above-mentioned DC/AC inverter can cooperate with the commercially available water pump that exchanges, be applied to outdoor use solar powered or other do not have in the water spray or fountain product of AC power.Fig. 4 is the schematic diagram that above-mentioned DC/AC inverter cooperates with water pump.10 for exchanging water pump among Fig. 4, can be commercially available synchronous motor water pump or asynchronous machine water pump, and 20 is above-mentioned DC/AC inverter, and L1 is DC/AC inverter 20 and the stube cable that exchanges water pump 10, and L2 is the cable that DC/AC inverter 20 is connected with DC power supply.In concrete the application, parameters such as the input voltage of DC/AC inverter 20, output voltage, frequency of oscillation can design according to the parameter of pump motor, 6V, 12V that can be designed to use always as input voltage, output voltage or 24V etc.
Also above-mentioned DC/AC inverter can be installed in the existing interchange water pump, make the interchange water pump that to use powered by direct current.As shown in Figure 5, present embodiment adopts the water pump of DC/AC inverter to comprise the pump housing 30, be installed on the alternating current machine in the pump housing 30 and be installed on impeller in the alternating current machine rotating shaft, above-mentioned DC/AC inverter 20 is installed in one containing cavity of the described pump housing 30, fill marine glue 3 between the movement of this DC/AC inverter 20 and the casing, the structure of movement is same as above, two power supply terminals of the described alternating current machine of output termination of inverter 20, the input termination external dc power of DC/AC inverter 20.31 is pump outlet among Fig. 5, and L3 is the cable that DC/AC inverter 20 is connected with DC power supply, and L4 is the stube cable of the alternating current machine in the DC/AC inverter 20 and the pump housing 30.
Can also be with above-mentioned DC/AC inverter applications in the disclosed miniature submerged pump of Chinese patent CN00130844.0.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620056811 CN2888742Y (en) | 2006-03-21 | 2006-03-21 | DC/AC inverter for AC motor and water pump using the inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620056811 CN2888742Y (en) | 2006-03-21 | 2006-03-21 | DC/AC inverter for AC motor and water pump using the inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2888742Y true CN2888742Y (en) | 2007-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620056811 Expired - Fee Related CN2888742Y (en) | 2006-03-21 | 2006-03-21 | DC/AC inverter for AC motor and water pump using the inverter |
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| Country | Link |
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| CN (1) | CN2888742Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169856A (en) * | 2015-05-20 | 2016-11-30 | 玉晶光电股份有限公司 | Water-cooled power supply device suitable for open water source |
-
2006
- 2006-03-21 CN CN 200620056811 patent/CN2888742Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169856A (en) * | 2015-05-20 | 2016-11-30 | 玉晶光电股份有限公司 | Water-cooled power supply device suitable for open water source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070411 Termination date: 20110321 |