CN205142071U - A stepless speed control equipment for AC motor - Google Patents
A stepless speed control equipment for AC motor Download PDFInfo
- Publication number
- CN205142071U CN205142071U CN201520820974.4U CN201520820974U CN205142071U CN 205142071 U CN205142071 U CN 205142071U CN 201520820974 U CN201520820974 U CN 201520820974U CN 205142071 U CN205142071 U CN 205142071U
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- Prior art keywords
- evaporator
- heat dissipation
- dissipation channel
- air heat
- air
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Abstract
The utility model discloses a stepless speed control equipment for AC motor, its characterized in that: including equipment casing and variable frequency speed governing(VFSG) circuit, the variable frequency speed governing(VFSG) circuit includes the variable frequency speed governing(VFSG) ware, exchanges reactance ware and radiator, and the output of variable frequency speed governing(VFSG) ware is connected and is exchanged the reactance ware, the variable frequency speed governing(VFSG) ware, exchanges the reactance ware and fixes in the equipment casing, and the radiator includes singlechip, temperature sensor, compressor, condenser, choke valve and evaporimeter, compressor connects the singlechip, singlechip connect temperature sensor, be provided with first air heat dissipation channel in the back of equipment casing, first air heat dissipation channel's upper end is provided with the first air discharge fan that is used for upwards extracting the air. The utility model discloses an active refrigerant dispels the heat and combines efficient air flow velocity, has improved the radiating efficiency of equipment, has reduced equipment operating temperature, has just prolonged the life of frequency conversion equipment, also makes the running behaviour of equipment more stable.
Description
Technical field
The utility model relates to a kind of stepless speed regulation equipment for alternating current machine.
Background technology
Alternating current machine is the machinery mutually changed for realizing mechanical energy and AC energy.Due to the great development of AC electric power systems, alternating current machine has become the most frequently used motor.Alternating current machine is compared with direct current machine, and owing to not having commutator (commutation see direct current machine), therefore structure is simple, easily manufactured, more firmly, easily makes high rotating speed, high voltage, big current, jumbo motor.The coverage of alternating current machine power is very large, from several watts to hundreds of thousands kilowatt, even up to a million kilowatts.
The stepless speed regulation of alternating current machine, refers to that alternating current machine can run under any rotating speed in certain range of speeds.The mode of speed regulation of general alternating current machine has: frequency control, variable voltage speed control and electromagnetic speed-adjusting 3 kinds, because frequency control can save the electric energy of machine operation greatly, and due to the call that national energy-saving reduces discharging, frequency control uses more and more wider in stepless time adjustment field, can produce a large amount of heats in the variable-frequency governor course of work, heating produces due to the loss of inside, based on main circuit, account for 98%, control circuit accounts for 2%.For ensureing that frequency converter normal reliable is run, must dispel the heat to frequency converter.Main method has: (1) adopts fan cooling: frequency converter casing internal heat dissipating can be taken away by the in-built fan of frequency converter.(2) ambient temperature: frequency converter is electronic installation, contain both electron element machine electrochemical capacitor etc., so temperature is larger to its aging effects.The ambient operating temperatures General Requirements of universal frequency converter-10 DEG C ~+50 DEG C, if frequency converter operating temperature can be reduced, just extend the useful life of frequency converter, performance is also stablized, existing then two kinds of radiating modes, radiating efficiency is low, is not suitable for high capacity, high-frequency stepless speed regulation speed governing occasion.
Utility model content
The purpose of this utility model is to overcome above shortcomings in prior art, and provides a kind of reasonable in design, the stepless speed regulation equipment for alternating current machine that radiating efficiency is high.
The technical scheme in the invention for solving the above technical problem is:
A kind of stepless speed regulation equipment for alternating current machine, it is characterized in that: comprise apparatus casing and frequency variant speed regulating circuit, frequency variant speed regulating circuit comprises variable-frequency governor, AC reactor and radiator, the output of variable-frequency governor connects AC reactor, during variable-frequency governor work, the magnetic field that high order harmonic component in output waveform causes produces magnetic driven power to many mechanical parts, hormetic frequency can be close with the natural frequency of these mechanical parts or overlap, and causes the vibration that electromagnetic reason causes.At output side transducer incoming transport reactor to absorb the higher harmonic current composition in output current of frequency converter, thus prevent vibration, whole system is run more stable.Variable-frequency governor, AC reactor is fixed in apparatus casing, radiator comprises single-chip microcomputer, temperature sensor, refrigerant compressor, condenser, choke valve and evaporator, refrigerant compressor, condenser, choke valve is connected by refrigeration piping successively with evaporator, described refrigerant compressor connects single-chip microcomputer, single-chip microcomputer connects temperature sensor, the first air heat dissipation channel is provided with in the back side of described apparatus casing, the upper end of the first air heat dissipation channel is provided with the first exhaust fan for upwards extracting air, first exhaust fan is connected to single-chip microcomputer, described condenser is arranged on the wall of air heat dissipation channel.
As preferably, described evaporator comprises the first evaporator and the second evaporator, choke valve is connected to three-way pipe via the first refrigeration piping, three-way pipe is connected to the first evaporator and the second evaporator, first evaporator and the second evaporator are separately positioned on the mainboard back side of variable-frequency governor, the mainboard back side of AC reactor, and the first evaporator and the second evaporator are connected to refrigerant compressor.Adopt this structure, heat radiation is realized by arranging cold-producing medium, improve radiator, the radiating efficiency of variable-frequency governor, because the air in the first air heat dissipation channel rises after heating, form air flowing comparatively efficiently, and accelerate air flowing further by the first scavenger fan, thus improve heat dispersion further.
As preferably, described apparatus casing is hexahedron structure, the left surface of apparatus casing and right flank are provided with the second air heat dissipation channel, the upper end of the second air heat dissipation channel is provided with the second exhaust fan for upwards extracting air, second exhaust fan is connected to single-chip microcomputer, and the inwall of the second air heat dissipation channel is provided with the air admission hole in connectivity device enclosure interior space.Adopt this structure, improve the air passage rates of side, thus improve radiating efficiency.Adopt this structure, further increase heat dispersion.
As preferably, the fan axle of first exhaust fan, second exhaust fan is all in being horizontally disposed with, and the side of apparatus casing is provided with the exhaust outlet being communicated to the first air heat dissipation channel or the second air heat dissipation channel.
As preferably, described apparatus casing is fixed with the display screen for displays temperature.
The utility model compared with prior art, have the following advantages and effect: undertaken dispelling the heat by active cold-producing medium and in conjunction with efficient speed air flow, improve the radiating efficiency of equipment, reduce equipment operating temperature, just extend the useful life of frequency conversion equipment, also make the runnability of equipment more stable.
Accompanying drawing explanation
Fig. 1 is the external structure schematic diagram of the utility model embodiment stepless speed regulation equipment.
Fig. 2 is the interior partial structurtes schematic diagram of the apparatus casing of the utility model embodiment stepless speed regulation equipment.
Fig. 3 is the sectional structure schematic diagram of the apparatus casing of the utility model embodiment stepless speed regulation equipment.
Embodiment
Below in conjunction with accompanying drawing, also by embodiment, the utility model is described in further detail, and following examples are that the utility model is not limited to following examples to explanation of the present utility model.
See Fig. 1-Fig. 3, the present embodiment is used for the stepless speed regulation equipment of alternating current machine, comprise apparatus casing and frequency variant speed regulating circuit, frequency variant speed regulating circuit comprises variable-frequency governor 1, AC reactor 2 and radiator, the output of variable-frequency governor 1 connects AC reactor 2, when variable-frequency governor 1 works, the magnetic field that high order harmonic component in output waveform causes produces magnetic driven power to many mechanical parts, hormetic frequency can be close with the natural frequency of these mechanical parts or overlap, and causes the vibration that electromagnetic reason causes.At output side transducer incoming transport reactor 2 to absorb the higher harmonic current composition in output current of frequency converter, thus prevent vibration, whole system is run more stable.Variable-frequency governor 1, AC reactor 2 is fixed in apparatus casing, radiator comprises single-chip microcomputer 31, temperature sensor 32, refrigerant compressor 41, condenser 42, choke valve and evaporator, refrigerant compressor 41, condenser 42, choke valve is connected by refrigeration piping successively with evaporator, described refrigerant compressor connects single-chip microcomputer 31, single-chip microcomputer 31 connects temperature sensor 32, the first air heat dissipation channel 51 is provided with in the back side of described apparatus casing, the upper end of the first air heat dissipation channel 51 is provided with the first exhaust fan 52 for upwards extracting air, first exhaust fan 52 is connected to single-chip microcomputer 31, described condenser 42 is arranged on the wall of air heat dissipation channel.Described evaporator comprises the first evaporator 451 and the second evaporator 452, choke valve is connected to three-way pipe 44 via the first refrigeration piping, three-way pipe 44 is connected to the first evaporator 451 and the second evaporator 452, first evaporator 451 and the second evaporator 452 are separately positioned on the mainboard back side of variable-frequency governor 1, the mainboard back side of AC reactor 2, and the first evaporator 451 and the second evaporator 452 are connected to refrigerant compressor 41.Adopt this structure, heat radiation is realized by arranging cold-producing medium, improve radiator, the radiating efficiency of variable-frequency governor 1, because the air in the first air heat dissipation channel 51 rises after heating, form air flowing comparatively efficiently, and accelerate air flowing further by the first scavenger fan, thus improve heat dispersion further.Described apparatus casing is hexahedron structure, the left surface of apparatus casing and right flank are provided with the second air heat dissipation channel 61, the upper end of the second air heat dissipation channel 61 is provided with the second exhaust fan 62 for upwards extracting air, second exhaust fan 62 is connected to single-chip microcomputer 31, and the inwall of the second air heat dissipation channel 61 is provided with the air admission hole 63 in connectivity device enclosure interior space.Adopt this structure, improve the air passage rates of side, thus improve radiating efficiency.Adopt this structure, further increase heat dispersion.The fan axle of first exhaust fan 52, second exhaust fan 62 is all in being horizontally disposed with, and the side of apparatus casing is provided with the exhaust outlet 64 being communicated to the first air heat dissipation channel 51 or the second air heat dissipation channel 61.Described apparatus casing is fixed with the display screen 7 for displays temperature.
Above content described in this specification is only to the explanation of the utility model example.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from the content of the utility model specification or surmount this scope as defined in the claims, protection range of the present utility model all should be belonged to.
Claims (5)
1. the stepless speed regulation equipment for alternating current machine, it is characterized in that: comprise apparatus casing and frequency variant speed regulating circuit, frequency variant speed regulating circuit comprises variable-frequency governor, AC reactor and radiator, the output of variable-frequency governor connects AC reactor, variable-frequency governor, AC reactor is fixed in apparatus casing, radiator comprises single-chip microcomputer, temperature sensor, refrigerant compressor, condenser, choke valve and evaporator, refrigerant compressor, condenser, choke valve is connected by refrigeration piping successively with evaporator, described refrigerant compressor connects single-chip microcomputer, single-chip microcomputer connects temperature sensor, the first air heat dissipation channel is provided with in the back side of described apparatus casing, the upper end of the first air heat dissipation channel is provided with the first exhaust fan for upwards extracting air, first exhaust fan is connected to single-chip microcomputer, described condenser is arranged on the wall of air heat dissipation channel.
2. the stepless speed regulation equipment for alternating current machine according to claim 1, it is characterized in that: described evaporator comprises the first evaporator and the second evaporator, choke valve is connected to three-way pipe via the first refrigeration piping, three-way pipe is connected to the first evaporator and the second evaporator, first evaporator and the second evaporator are separately positioned on the mainboard back side of variable-frequency governor, the mainboard back side of AC reactor, and the first evaporator and the second evaporator are connected to refrigerant compressor.
3. the stepless speed regulation equipment for alternating current machine according to claim 1, it is characterized in that: described apparatus casing is hexahedron structure, the left surface of apparatus casing and right flank are provided with the second air heat dissipation channel, the upper end of the second air heat dissipation channel is provided with the second exhaust fan for upwards extracting air, second exhaust fan is connected to single-chip microcomputer, and the inwall of the second air heat dissipation channel is provided with the air admission hole in connectivity device enclosure interior space.
4. the stepless speed regulation equipment for alternating current machine according to claim 1, it is characterized in that: the fan axle of first exhaust fan, second exhaust fan is all in being horizontally disposed with, and the side of apparatus casing is provided with the exhaust outlet being communicated to the first air heat dissipation channel or the second air heat dissipation channel.
5. the stepless speed regulation equipment for alternating current machine according to claim 1, is characterized in that: described apparatus casing is fixed with the display screen for displays temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520820974.4U CN205142071U (en) | 2015-10-23 | 2015-10-23 | A stepless speed control equipment for AC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520820974.4U CN205142071U (en) | 2015-10-23 | 2015-10-23 | A stepless speed control equipment for AC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205142071U true CN205142071U (en) | 2016-04-06 |
Family
ID=55627823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520820974.4U Expired - Fee Related CN205142071U (en) | 2015-10-23 | 2015-10-23 | A stepless speed control equipment for AC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205142071U (en) |
-
2015
- 2015-10-23 CN CN201520820974.4U patent/CN205142071U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20161023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |