CN204344430U - A kind of frequency-converting control device of compressor - Google Patents
A kind of frequency-converting control device of compressor Download PDFInfo
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- CN204344430U CN204344430U CN201420833092.7U CN201420833092U CN204344430U CN 204344430 U CN204344430 U CN 204344430U CN 201420833092 U CN201420833092 U CN 201420833092U CN 204344430 U CN204344430 U CN 204344430U
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- frequency
- compressor
- motor
- frequency variator
- contactor
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Abstract
The utility model provides a kind of frequency-converting control device of compressor, comprise: controller, frequency variator, motor, compressor drum, pressure transducer, air pipe network and power supply, described controller is connected with pressure transducer with frequency variator respectively, described frequency variator is connected with power supply with motor respectively, described motor is connected to air pipe network by compressor drum, and described pressure transducer is arranged between compressor drum and air pipe network.Pressure signal is converted to the electrical signal of 0 ~ 5V by the utility model by pressure transducer, and feed back in the regulator of frequency variator inside, then by comparator, electrical signal and the pressure definite value set are compared computing, and then output control signal, frequency variator, according to this control signal output frequency, regulates the rotating speed of motor, makes pressure remained steady, work under making compressor remain on power-saving running state, energy-saving effect is remarkable.
Description
Technical field
The utility model relates to a kind of frequency-converting control device, particularly relates to a kind of frequency-converting control device of compressor.
Background technique
Compressor is that gas carries out compressing and making the gas of compression have the equipment of certain pressure by a kind of motor that utilizes in compression chamber, and compressor accounts for 15% of the large industry equipment power consumption such as blower fan, water pump, boiler or air compressor; In the prior art, one, two air compressors as mair motor one as motor for subsequent use, all be operated in power frequency state, start mode is star triangular decompression starter, and Stress control adopts two point form to control, as upper and lower controls, namely when air compressor cylinder internal pressure reaches capping, air compressor closes by the oil pressure of itself Yan of holding one's breath, and when pressure drop is lower in limited time to setting, air compressor opens suction valve; So, due to the change of gas consumption in production process, air compressor also compression and decompression continually, the inrush current of mair motor is still very large, affect the security of operation of the stable of electrical network and other consumer, and the impact of motor power frequency starting equipment is large, the wearing and tearing of motor bearings are large; Do not produce pressurized air in mair motor no-load running process often, belong to non-economy and run, waste of energy is serious, and motor causes noise during compressor operation very large when power frequency operation.
Summary of the invention
Technical problem to be solved in the utility model is the frequency-converting control device needing to provide the significant compressor of a kind of energy-saving effect.
To this, the utility model provides a kind of frequency-converting control device of compressor, comprise: controller, frequency variator, motor, compressor drum, pressure transducer, air pipe network and power supply, described controller is connected with pressure transducer with frequency variator respectively, described frequency variator is connected with power supply with motor respectively, described motor is connected to air pipe network by compressor drum, and described pressure transducer is arranged between compressor drum and air pipe network.
Further improvement of the utility model is, described frequency variator comprises regulator, and electrical signal is fed back to the regulator of frequency variator inside by described pressure transducer by controller.
Further improvement of the utility model is, described frequency variator also comprises comparator, and described comparator is connected with regulator.
Further improvement of the utility model is, comprises the first contactor, and described frequency variator is connected to power supply by the first contactor.
Further improvement of the utility model is, comprises the second contactor, and described motor is connected to power supply by the second contactor.
Further improvement of the utility model is, comprises the 3rd contactor, and described frequency variator is connected with the second contactor by the 3rd contactor.
Further improvement of the utility model is, described frequency variator, the first contactor and the 3rd contactor are arranged in the electric control box of compressor.
Further improvement of the utility model is, described motor, compressor drum and the second contactor are arranged in compressor.
Further improvement of the utility model is, described power supply is three phase mains.
Further improvement of the utility model is, described motor is asynchronous motor.
Compared with prior art, the beneficial effects of the utility model are: the electrical signal by pressure transducer, pressure signal being converted to 0 ~ 5V, and feed back in the regulator of frequency variator inside, then by comparator, electrical signal and the pressure definite value set are compared computing, and then export control signal, frequency variator is according to this control signal output frequency, regulate the rotating speed of motor, make pressure remained steady, work under making compressor remain on power-saving running state, energy-saving effect is remarkable.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing, preferably embodiment of the present utility model is described in further detail.
As shown in Figure 1, this example provides a kind of frequency-converting control device of compressor, comprise: controller 1, frequency variator 2, motor 3, compressor drum 4, pressure transducer 5, air pipe network 6 and power supply 7, described controller 1 is connected with pressure transducer 5 with frequency variator 2 respectively, described frequency variator 2 is connected with power supply 7 with motor 3 respectively, described motor 3 is connected to air pipe network 6 by compressor drum 4, and described pressure transducer 5 is arranged between compressor drum 4 and air pipe network 6.
This routine described frequency variator 2 comprises regulator and comparator, electrical signal is fed back to the regulator of frequency variator 2 inside by described pressure transducer 5 by controller 1, described comparator is connected with regulator, the electrical signal that pressure transducer 5 feeds back by described comparator and the pressure definite value set compare computing, then control signal is exported, described frequency variator 2 is again according to the output frequency of this control signal control self, and then regulate the rotating speed of motor 3, make pressure remained steady, make compressor remain on power-saving running state.
This example preferably includes the first contactor 8, second contactor 9 and the 3rd contactor 10, described frequency variator 2 is connected to power supply 7 by the first contactor 8, described motor 3 is connected to power supply 7 by the second contactor 9, described frequency variator 2 is connected with the second contactor 9 by the 3rd contactor 10, described power supply 7 is preferably three phase mains 7, and described motor 3 is preferably asynchronous motor.For the ease of construction and management, reduce user cost, described frequency variator 2, first contactor 8 and the 3rd contactor 10 are arranged in the electric control box of compressor; Described motor 3, compressor drum 4 and the second contactor 9 are arranged in compressor.
The energy-saving effect of this example is remarkable, described frequency-converting control device is by pressure transducer 5, pressure signal is converted to the electrical signal of 0 ~ 5V, and feed back in the regulator of frequency variator 2 inside, described regulator and comparator are formed expands module, described expansion module has constant voltage, interval pressure and charge valve three kinds of functional modes, the electrical signal that pressure transducer 5 is fed back by comparator by described expansion module and pressure definite value compare computing, then control signal is exported, frequency variator 2 is again according to this control signal output frequency, regulate the rotating speed of motor 3, make pressure remained steady, compressor is made to remain on power-saving running state, described pressure definite value can pre-set, and carries out corresponding optimum configurations according to different motors 3 and compressor.
The basic method of operation of compressor loads and off-load mode, and during off-load, motor 3 dallies, energy waste in vain; This example utilizes frequency variator 2 to regulate the rotating speed of compressor drum 4 by changing motor 3 frequency, namely VFC controls the air output of air compressor unit time by the rotating speed changing motor 3, thus reach the pressure of pilot line, there is obvious energy-saving effect.
The working principle of this example is as follows: the force value of the air pipe network 6 recorded by pressure transducer 5, and by comparator by the force value of air pipe network 6 compared with pressure set points, obtain deviation, obtain frequency variator 2 and act on frequency values on motor 3; Then the corresponding frequencies of frequency variator 2 output and the Ac of amplitude, motor 3 obtains corresponding rotating speed; By the electrical signal of pressure transducer 5 feedback pressure to frequency variator 2, by comparator electrical signal customize with the pressure of setting and compares computing, the output frequency of control frequency variator 2 in real time, thus adjustment motor 3 rotating speed, make pressure stability in setting pressure; This example can directly be transformed existing compressor, retains former power frequency system constant during transformation, increases frequency conversion system, and when air compressor control system runs, frequency conversion system enters running state automatically.
Namely, this example adopts pressure transducer 5, pressure signal is converted to the electrical signal of 0 ~ 5 V, feed back to the regulator of frequency variator 2 inside, electrical signal and pressure definite value are compared computing by comparator by regulator, then export control signal, frequency variator 2 is again according to this control signal output frequency, regulate the rotating speed of motor, make pressure remained steady, make compressor remain on power-saving running state; This whole process is realized by hardware, and described regulator and comparator can be realized by hardware device.
The function that this example realizes comprises: the first, energy saving, and this example adopts the compressor of frequency variator 2 control to compare with the compressor of Traditional control, can energy saving greatly, very economical according to the working conditions of compressor that air quantity demand supplies; The second, operating cost is reduced, the operating cost of traditional compressor is made up of initiated purchase cost, maintenance cost and energy cost, wherein energy cost is the main body of compressor operating cost, energy cost reduces by this example, after adding varying frequency starting, the impact of equipment is reduced, maintenance amount also follows reduction, so operating cost will reduce greatly; Three, pressure controling precision is improved, the VFC of this example has accurate pressure control capability, the air pressure of compressor is exported match with the tolerance needed for user's air system, the output tolerance of VFC compressor changes along with the change of motor 3 rotating speed; Four, the working life of compressor is extended, frequency variator 2 is from 0HZ starting compressor, its starting time for acceleration can adjust, thus reduce impact when starting, electric component and the mechanical part of compressor caused, strengthen the reliability of system, the working life of compressor is extended, in addition, current fluctuation when VFC can reduce startup of unit, this fluctuating current can affect the electricity consumption of electrical network and miscellaneous equipment, and the peak value of starting current can effectively be reduced to a minimum by frequency variator 2; Five, reduce the noise of compressor, according to the working condition requirement of compressor, after freguency control reform, motor 3 running speed obviously slows down, and has therefore effectively fallen noise during compressor operating; Six, start and stop flatness is good, and inrush current is little, impacts little, greatly reduce the maintenance cost of air compressor, extend working life compressor and power supply grid.
The embodiment of the above is better embodiment of the present utility model; not limit concrete practical range of the present utility model with this; scope of the present utility model comprises and is not limited to this embodiment, and the equivalence change that all shapes according to the utility model, structure are done is all in protection domain of the present utility model.
Claims (10)
1. the frequency-converting control device of a compressor, it is characterized in that, comprise: controller, frequency variator, motor, compressor drum, pressure transducer, air pipe network and power supply, described controller is connected with pressure transducer with frequency variator respectively, described frequency variator is connected with power supply with motor respectively, described motor is connected to air pipe network by compressor drum, and described pressure transducer is arranged between compressor drum and air pipe network.
2. the frequency-converting control device of compressor according to claim 1, is characterized in that, described frequency variator comprises regulator, and electrical signal is fed back to the regulator of frequency variator inside by described pressure transducer by controller.
3. the frequency-converting control device of compressor according to claim 2, is characterized in that, described frequency variator also comprises comparator, and described comparator is connected with regulator.
4. the frequency-converting control device of the compressor according to claims 1 to 3 any one, is characterized in that, comprises the first contactor, and described frequency variator is connected to power supply by the first contactor.
5. the frequency-converting control device of compressor according to claim 4, is characterized in that, comprises the second contactor, and described motor is connected to power supply by the second contactor.
6. the frequency-converting control device of compressor according to claim 5, is characterized in that, comprises the 3rd contactor, and described frequency variator is connected with the second contactor by the 3rd contactor.
7. the frequency-converting control device of compressor according to claim 6, is characterized in that, described frequency variator, the first contactor and the 3rd contactor are arranged in the electric control box of compressor.
8. the frequency-converting control device of compressor according to claim 6, is characterized in that, described motor, compressor drum and the second contactor are arranged in compressor.
9. the frequency-converting control device of the compressor according to claims 1 to 3 any one, is characterized in that, described power supply is three phase mains.
10. the frequency-converting control device of the compressor according to claims 1 to 3 any one, is characterized in that, described motor is asynchronous motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420833092.7U CN204344430U (en) | 2014-12-24 | 2014-12-24 | A kind of frequency-converting control device of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420833092.7U CN204344430U (en) | 2014-12-24 | 2014-12-24 | A kind of frequency-converting control device of compressor |
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| Publication Number | Publication Date |
|---|---|
| CN204344430U true CN204344430U (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420833092.7U Expired - Fee Related CN204344430U (en) | 2014-12-24 | 2014-12-24 | A kind of frequency-converting control device of compressor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179389A (en) * | 2015-09-18 | 2015-12-23 | 苏州阿斯顿压缩机有限公司 | Servo variable system |
| CN105197062A (en) * | 2015-10-20 | 2015-12-30 | 济南大学 | Air compressor with stable output pressure |
| CN105235706A (en) * | 2015-10-19 | 2016-01-13 | 济南大学 | Application of electric pneumatic braking rapid air charging device with air pressure supplement function |
| CN108138757A (en) * | 2015-11-13 | 2018-06-08 | 株式会社日立产机系统 | Gas compressor |
-
2014
- 2014-12-24 CN CN201420833092.7U patent/CN204344430U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179389A (en) * | 2015-09-18 | 2015-12-23 | 苏州阿斯顿压缩机有限公司 | Servo variable system |
| CN105235706A (en) * | 2015-10-19 | 2016-01-13 | 济南大学 | Application of electric pneumatic braking rapid air charging device with air pressure supplement function |
| CN105197062A (en) * | 2015-10-20 | 2015-12-30 | 济南大学 | Air compressor with stable output pressure |
| CN108138757A (en) * | 2015-11-13 | 2018-06-08 | 株式会社日立产机系统 | Gas compressor |
| CN108138757B (en) * | 2015-11-13 | 2019-10-18 | 株式会社日立产机系统 | Gas compressor |
| US11773855B2 (en) | 2015-11-13 | 2023-10-03 | Hitachi Industrial Equipment Systems Co., Ltd. | Gas compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Frequency converting control device for compressor Effective date of registration: 20151030 Granted publication date: 20150520 Pledgee: Shenzhen SME financing Company limited by guarantee Pledgor: Shenzhen Da Zhong Xin Yuan Energy Saving Technology Co., Ltd. Registration number: 2015990000940 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20201224 |