CN102562548B - Single-phase alternating-current frequency-conversion constant-voltage water pump - Google Patents
Single-phase alternating-current frequency-conversion constant-voltage water pump Download PDFInfo
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- CN102562548B CN102562548B CN201010594895.8A CN201010594895A CN102562548B CN 102562548 B CN102562548 B CN 102562548B CN 201010594895 A CN201010594895 A CN 201010594895A CN 102562548 B CN102562548 B CN 102562548B
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Abstract
The invention provides a single-phase alternating-current frequency-conversion constant-voltage water pump which comprises a single-phase motor, a water pump, a pressure sensor, a flow sensor and a control system and is characterized in that the control system consists of a DSC (Dynamic Stability Control), a key circuit, a rectifier power circuit, a display circuit, a signal isolating circuit, a power output circuit, an overcurrent protection circuit and a control code, wherein the key circuit, the display circuit, the pressure sensor, the flow sensor and the signal isolating circuit are connected with the DSC; the power supply is electrically connected with the rectifier power circuit; the rectifier power circuit is connected with all circuits; the water pump is provided with a water inlet and a water outlet; and the pressure sensor and the flow sensor are installed on the water outlet.
Description
Technical field
The present invention relates to single-phase alternating-current variable-frequency constant-pressure water pump, be mainly applicable to the piped water supply of the higher family of water supply stability requirement, small units building, small-sized hotel and for water management techniques.
Background technique
Single phase alternating current power supply water pump is low with its simple structure, cost, technology maturity high, in industry with civilianly have purposes extremely widely.In recent years, along with growth in the living standard, the enhancing of people's environmental consciousness, and the electric power supply pressure continued to increase, individual and society all propose higher requirement to the energy consumption of each electric appliances, and the automatic single-phase water pump in the past mainly relying on pressure switch to control is because it is not energy-conservation and greatly and more and more cannot meet user's requirement to pipeline impact.Single-phase energy-saving constant voltage water pump can reach above object, improves the travelling comfort of user's water and extends the working life of pipeline, but not providing single-phase energy-saving constant voltage water pump in the market.
Summary of the invention
The object of the invention is the shortcoming existed to overcome prior art, providing a kind of control performance high, pressure of supply water good stability, impacting little to pipeline, and energy-conservation single-phase alternating-current variable-frequency constant-pressure water pump.
The technological scheme of single-phase alternating-current variable-frequency constant-pressure water pump of the present invention is: comprise single phase motor, water pump, pressure transducer, flow transducer and control system, it is characterized in that described control system is by DSC, key circuit, rectification power circuit, display circuit, signal isolation circuit, power output circuit, over-current protection circuit and control routine formed, described key circuit and display circuit, pressure transducer, flow transducer is connected with DSC with signal isolation circuit, power supply is connected with rectification power circuit, rectification power circuit is connected with all circuit, water pump has water intake and water outlet, pressure transducer and flow transducer are arranged on water outlet.
The invention discloses a kind of single-phase alternating-current variable-frequency constant-pressure water pump, mainly comprise the water pump that single phase motor drives, pressure transducer, flow transducer and control system, described control system is by DSC(digital signal controller), button, rectification power circuit, display circuit, signal isolation circuit, power output circuit, over-current protection circuit and control routine formed, described button and display circuit, pressure transducer, flow transducer is connected with DSC with signal isolation circuit, power supply is connected with rectification power circuit, rectification power circuit is connected with all circuit (refers to rectification power circuit and display circuit, signal isolation circuit, power output circuit, over-current protection circuit is connected with DSC).This product has the following advantages:
One, adopt electromechanical integrated structure, make user eliminate the trouble of installation.
Two, more multiplex than a three phase variable frequency constant voltage water pump flow transducer, can judge more accurately user with water state, realize controlling more reliably.
Three, the DSC of high performance tape DSP function is used to produce high-precision vector pulse-width signal.
Four, the present invention is applicable to all single-phase water pump types, does not need to set complicated major-minor umber of turn ratio.
Five, constant pressure, without impacting, can pipeline, valve and watering equipment in available protecting raw water service pump stream without the water supply of water hammer effect.
Accompanying drawing explanation
Fig. 1 is single-phase alternating-current variable-frequency constant-pressure water pump structural representation of the present invention;
Fig. 2 is single-phase alternating-current variable-frequency constant-pressure water pump functional-block diagram of the present invention;
Fig. 3 is key circuit, display circuit and DSC control circuit schematic diagram;
Fig. 4 is signal isolation circuit, power output circuit, rectification power circuit, over-current protection circuit schematic diagram;
Fig. 5 is LED display circuit;
Fig. 6 is DSC(digital signal controller) circuit;
Fig. 7 is output driving circuit;
Fig. 8 is signal isolation circuit;
Fig. 9 is power output circuit;
Figure 10 is rectification power circuit;
Figure 11 is over-current protection circuit.
Embodiment
The present invention relates to a kind of single-phase alternating-current variable-frequency constant-pressure water pump, as shown in Fig. 1-Figure 11, comprise single phase motor 1, water pump 2, pressure transducer 5, flow transducer 6 and control system, it is characterized in that described control system is by DSC, key circuit, rectification power circuit 9, display circuit 7, signal isolation circuit 81, power output circuit 82, over-current protection circuit 83 and control routine formed, described key circuit and display circuit 7, pressure transducer 5, flow transducer 6 is connected with DSC with signal isolation circuit 81, power supply is connected with rectification power circuit 9, rectification power circuit is connected with all circuit, water pump has water intake 3 and water outlet 4, pressure transducer 5 and flow transducer 6 are arranged on water outlet 4.
Single-phase alternating-current variable-frequency constant-pressure water pump of the present invention, nixie tube U4 is had to show real-time pressure and setting pressure in the display circuit 7 of described control system, the pressure needing to control is set by key circuit, 48 sections LED nixie tube U4 are driven by the 4th ic chip 4 and the 6th ic chip 6, 14th pin of its signal input port the 4th ic chip 4 is connected to the 11st pin of DSC, 11st pin of the 4th ic chip 4 is connected to the 14th pin of DSC, 12nd pin of the 4th ic chip 4 is connected to the 15th pin of DSC, by the 51st, 50th, 52nd, 53rd, 54th resistance R51, R50, R52, R53, R54 and the 1st, 2nd, 3rd button S1, S2, the key circuit of S3 composition is connected to the 6th pin of DSC.Two pwm signals that described control system is produced by code by the DSC containing DSP function are exported by the 26th pin of PWM1L and the 24th pin of PWM2L, and the signal isolation circuit 81 be made up of the first ic chip 1 and the 8th ic chip 8 is connected to the 1st pin of A1 integrated package U1A and the 3rd pin not gate 74HC04 of B integrated package U1B after isolating; Anti-phase rear respectively by the 2nd pin of A1 integrated package U1A and the 4th pin output of B integrated package U1B, with the 1st, the 2nd pin interconnection of the 7th ic chip 7, second ic chip 2, the 19th, the 12nd pin of the second ic chip 2, the 7th ic chip 7 drives 4 IGBT respectively; The U that 1st triode, the 2nd triode, the 3rd triode, the 4th triode Q1, Q2, Q3, Q4 are connected to motor by the E pole of the 1st triode Q1 holds, and is connected to V holds by the E pole of the 3rd triode Q3.The internal amplifier and the 33rd of described second integrated package, the 7th ic chip 2, IC7, the 34th resistance R33, R34, the 28th electric capacity C28, the 18th, the 25th, the 27th, the 16th, the 22nd, the 23rd resistance R18, R25, R27, R16, R22, R23 form over-current protection circuit jointly; Protection output terminal the 3rd pin of the second ic chip 2, the 7th ic chip 7 is connected to 2 pin of isolation the 3rd ic chip 3, exports the 16th pin being connected to DSC, protection starting during low level after being isolated by signal by the 4th pin of the 3rd ic chip 3.One end of described flow transducer 6 is held with being connected to, and the other end is connected to the 5th pin of DSC, and 3 ports one of pressure transducer 5 are connected to 5V power supply, and another holds with being connected to, then another is connected to the 4th pin of DSC.
Single-phase alternating-current variable-frequency constant-pressure water pump controls working procedure:
In Fig. 1, pressure transducer 5 and flow transducer 6 are arranged on the water outlet 4 of water pump 2, for gathering pressure versus flow signal, pressure transducer 5 is connected with control system circuit board by electric wire with flow transducer 6, import pressure versus flow electrical signal into control system circuit board, control system circuit board is connected with pump motor 1 with power supply.
From Fig. 2, Fig. 3, pressure transducer 5 and flow transducer 6 by live signal special delivery to DSC(digital signal controller) after, DSC is made a response to signal by specific program, 2 pulse-width signals that this reaction generates, power output circuit 82 is delivered to after signal isolation circuit 81 is isolated, voltage signal is zoomed into power signal by power output circuit 82, for driving pump motor 1 to operate after synthesis frequency conversion sinusoidal voltage.Its control principle is: when user's water consumption strengthens, and flow transducer 6 and pressure transducer 5 are delivered to DSC by after this change perception, and DSC will improve output frequency, and water pump 2 is operated at faster speed, improves water output to keep constant pressure.When user's water consumption reduces, this change is passed to DSC by flow transducer 6 and pressure transducer 5, and DSC will reduce output frequency, makes water pump 2 at low speed, reduces water output, makes maintain constant pressure.When user no longer uses water, this change is passed to DSC by flow transducer and pressure transducer, and DSC will close output frequency, stops pump operation.
Fig. 3 (can be divided into Fig. 5 and Fig. 6) is button display circuit and DSC partial schematic diagram, according to specific program by DSC(digital signal controller) display that produces exports by the 14th, the 15th, the 11st pin of DSC, 14th pin of DSC is connected to the 11st pin of the 4th ic chip 4,15th pin of DSC is connected to the 12nd pin of the 4th ic chip 4, and the 11st pin of DSC is connected to the 14th pin of the 4th ic chip 4.1st pin of pressure transducer is connected to+5V, and the 2nd pin is connected to the 4th pin of DSC, and the 3rd pin is held with being connected to.1st pin of flow transducer 6 is connected to the 5th pin of DSC, 2nd pin is held with being connected to, push button signalling is connected to the 6th pin, rectification power circuit 9 and current signal be connected respectively to DSC the 2nd, 3 pins, the 26th and the 24th pin of DSC exports a pair pwm signal.
Fig. 4 (can be divided into Fig. 7, Fig. 8, Fig. 9, Figure 10 and Figure 11) be signal isolation circuit, power output circuit, rectification power circuit, the circuit theory diagrams of over-current protection circuit, the 2nd pin that a pair pwm signal is connected respectively to optocoupler first ic chip 1 and the 8th ic chip 8 is exported by DSC, 1st ic chip 1 and the 8th ic chip 8 are exported by the 6th respective pin after being isolated by signal, through phase inverter U1A, the 1st of the second ic chip 2 and the 7th ic chip 7 the is cross connected to after U1B is anti-phase, 2nd pin, second ic chip 2 and the 7th ic chip 7 are power drive IC, pwm signal is amplified rear driving IGBT, 1st triode Q1, 2nd triode Q2, 3rd triode Q3, 4th triode Q4.Form sinusoidal voltage at the E end of the 1st triode Q1 and the 3rd triode Q3, drive pump motor 1 to operate.Current sampling the 33rd resistance R33 is connected with at the E end of the 4th triode Q4,9th pin of input the 7th ic chip 7 after the 6th pin inputting the 7th ic chip 7 after current sampling is amplified by its internal amplifier, 9th pin internal amplifier connects into comparator, when current is excessive, comparator exports low electricity by the 3rd pin and frequently drives optocoupler the 3rd ic chip 3, is input to DSC after being isolated by over-current signal.
This programme has the following advantages:
1, adopt electromechanical integrated structure, make user eliminate the trouble of installation.
2, more multiplex than a three phase variable frequency constant voltage water pump flow transducer, can judge more accurately user with water state, realize controlling more reliably.
3, the DSC of high performance tape DSP function is used to produce high-precision vector pulse-width signal.
4, the present invention is applicable to all single-phase water pump types, does not need to set complicated major-minor umber of turn ratio.
5, constant pressure, without impacting, can pipeline, valve and watering equipment in available protecting raw water service pump stream without the water supply of water hammer effect.
Claims (2)
1. single-phase alternating-current variable-frequency constant-pressure water pump, comprises single phase motor (1), water pump (2), pressure transducer (5), flow transducer (6) and control system, is characterized in that described control system is by DSC, key circuit, rectification power circuit (9), display circuit (7), signal isolation circuit (81), power output circuit (82), over-current protection circuit (83) and control routine formed, described key circuit and display circuit (7), pressure transducer (5), flow transducer (6) is connected with DSC with signal isolation circuit (81), power supply is connected with rectification power circuit (9), rectification power circuit is connected with all circuit, water pump has water intake (3) and water outlet (4), pressure transducer (5) and flow transducer (6) are arranged on water outlet (4), nixie tube U4 is had to show real-time pressure and setting pressure in the display circuit (7) of described control system, the pressure needing to control is set by key circuit, 48 sections LED nixie tube U4 are driven by the 4th ic chip 4 and the 6th ic chip 6, 14th pin of its signal input port the 4th ic chip 4 is connected to the 11st pin of DSC, 11st pin of the 4th ic chip 4 is connected to the 14th pin of DSC, 12nd pin of the 4th ic chip 4 is connected to the 15th pin of DSC, by the 51st, 50th, 52nd, 53rd, 54th resistance (R51, R50, R52, R53, R54) the and 1st, 2nd, 3rd button (S1, S2, S3) key circuit formed is connected to the 6th pin of DSC, two pwm signals that described control system is produced by code by the DSC containing DSP function are exported by the 26th pin of PWM1L and the 24th pin of PWM2L, are connected to 1st pin of A1 integrated package U1A and the 3rd pin not gate 74HC04 of B integrated package U1B after signal isolation circuit (81) isolation be made up of the first ic chip 1 and the 8th ic chip 8, anti-phase rear respectively by the 2nd pin of A1 integrated package U1A and the 4th pin output of B integrated package U1B, with the 1st, 2 pin interconnections of the 7th ic chip 7, second ic chip 2, the second ic chip 2, the 7th ic chip 7 the 19th, 12 pins drive 4 IGBT respectively, the U that 1st triode, the 2nd triode, the 3rd triode, the 4th triode (Q1, Q2, Q3, Q4) are connected to motor by the E pole of the 1st triode Q1 holds, be connected to V by the E pole of the 3rd triode Q3 to hold, described control system have the internal amplifier and the 33rd of the second integrated package, the 7th ic chip 2, IC7, the 34th resistance (R33, R34), the 28th electric capacity C28, the 18th, the 25th, the 27th, the 16th, the 22nd, the 23rd resistance (R18, R25, R27, R16, R22, R23) forms over-current protection circuit (83) jointly, protection output terminal the 3rd pin of the second ic chip 2, the 7th ic chip 7 is connected to the 2nd pin of isolation the 3rd ic chip 3, exports the 16th pin being connected to DSC, protection starting during low level after being isolated by signal by the 4th pin of the 3rd ic chip 3.
2. single-phase alternating-current variable-frequency constant-pressure water pump as claimed in claim 1, it is characterized in that one end of described flow transducer (6) is held with being connected to, the other end is connected to the 5th pin of DSC, 3 ports one of pressure transducer (5) are connected to 5V power supply, another holds with being connected to, then another is connected to the 4th pin of DSC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010594895.8A CN102562548B (en) | 2010-12-17 | 2010-12-17 | Single-phase alternating-current frequency-conversion constant-voltage water pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010594895.8A CN102562548B (en) | 2010-12-17 | 2010-12-17 | Single-phase alternating-current frequency-conversion constant-voltage water pump |
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| CN102562548A CN102562548A (en) | 2012-07-11 |
| CN102562548B true CN102562548B (en) | 2015-01-28 |
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| CN201010594895.8A Active CN102562548B (en) | 2010-12-17 | 2010-12-17 | Single-phase alternating-current frequency-conversion constant-voltage water pump |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074747A (en) * | 2013-03-28 | 2014-10-01 | 上海诺科泵业有限公司 | Digital display screw pump |
| CN110816257A (en) * | 2019-11-27 | 2020-02-21 | 南京金龙客车制造有限公司 | PWM control electronic water pump assembly |
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| CN2071216U (en) * | 1989-07-09 | 1991-02-13 | 梁礼锐 | Full automatic stabilized water supply device |
| CN201671802U (en) * | 2010-05-26 | 2010-12-15 | 天津市华萌科技有限公司 | Fan and pump class load automatic adjusting and super power saving device |
| CN201953633U (en) * | 2010-12-17 | 2011-08-31 | 台州神能电器有限公司 | Single-phase alternating-current variable-frequency constant-pressure water pump |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8540493B2 (en) * | 2003-12-08 | 2013-09-24 | Sta-Rite Industries, Llc | Pump control system and method |
| US20060130504A1 (en) * | 2004-12-17 | 2006-06-22 | Agrawal Nityanand J | Method and apparatus for control of a variable speed compressor |
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2010
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|---|---|---|---|---|
| CN2071216U (en) * | 1989-07-09 | 1991-02-13 | 梁礼锐 | Full automatic stabilized water supply device |
| CN201671802U (en) * | 2010-05-26 | 2010-12-15 | 天津市华萌科技有限公司 | Fan and pump class load automatic adjusting and super power saving device |
| CN201953633U (en) * | 2010-12-17 | 2011-08-31 | 台州神能电器有限公司 | Single-phase alternating-current variable-frequency constant-pressure water pump |
Non-Patent Citations (2)
| Title |
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| 一种用于单相交流电机的新型SVPWM变频控制方案的实验研究;王良军;《中国优秀硕士学位论文全文数据库 工程科技II辑》;20090115(第01期);C042-50 * |
| 基于DSP控制的变频自动恒压供水系统设计;王宪生等;《自动化仪表》;20061231;第27卷(第12期);第23-25页 * |
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Address after: 317525 Taizhou, Zhejiang Wenling City, Ocean City Town Industrial Zone, 500 North Road Patentee after: Zhejiang God energy Polytron Technologies Inc Address before: 317525 Ocean City Industrial Zone, Dashi Town, Wenling City, Taizhou, Zhejiang Patentee before: Taizhou Shenneng Electric Co., Ltd. |
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