CN103277871B - Outdoor fan of air-conditioner speed-regulating control device - Google Patents
Outdoor fan of air-conditioner speed-regulating control device Download PDFInfo
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- CN103277871B CN103277871B CN201310164087.1A CN201310164087A CN103277871B CN 103277871 B CN103277871 B CN 103277871B CN 201310164087 A CN201310164087 A CN 201310164087A CN 103277871 B CN103277871 B CN 103277871B
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- 238000004378 air conditioning Methods 0.000 claims abstract description 12
- 239000004020 conductor Substances 0.000 claims 2
- 230000007935 neutral effect Effects 0.000 claims 2
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The invention discloses outdoor fan of air-conditioner speed-regulating control device, comprise drive circuit, have transformer, contactor, the switching control module of multistage output.The present invention adopts a transformer with multistage output, the output of this transformer different stage is carried out switching by controlled contactor and is exported, during work, switch control module, based on detecting the air-conditioning work pressure obtained, control switching is carried out to contactor, blower fan can correspondingly be worked under different voltage swings, and then can run under corresponding rotating speed, and match with air-conditioning work pressure.Said apparatus cost is low, does not have the impact of electromagnetic noise during work; Compare chopping depressuring speed regulating control can reduce costs, especially without low-frequency noise; Its fault rate is also lower.
Description
Technical field
The present invention relates to the control technology of outdoor fan of air-conditioner, be specifically related to a kind of outdoor fan of air-conditioner speed-regulating control device.
Background technology
In general, the off-premises station of air-conditioner set is for adapting to varying environment working condition requirement, and unit needs when varying environment temperature is run to carry out speed regulating control to maintain condensing pressure or the water temperature of OK range to blower fan.The current mode of speed regulation more generally used has step-less adjustment and ON/OFF to regulate, and step-less adjustment controls the frequency of blower fan or voltage by frequency conversion or time variant voltage (mainly chopper control) exactly and changes the rotating speed of blower fan thus change air quantity and maintain stable pressure or water temperature; It is exactly control opening-stopping to reach and maintaining the pressure of OK range or water temperature of blower fan by pressure controller that ON/OFF regulates.
Frequency control needs to add frequency converter, and cost is high, and has electromagnetic noise; And the speed governing of copped wave time variant voltage needs to add variable voltage speed control device, its low-frequency noise is very large, also can cause resonance; ON/OFF speed governing is then control blower fan by switching mode pressure (temperature) controller, simple and practical, but can only regulate by opening and closing blower fan, and system pressure can be caused unstable.
Summary of the invention
For the problems referred to above, the invention provides the outdoor fan of air-conditioner speed-regulating control device that a kind of cost reduces, do not have electromagnetic noise, failure rate is low, speed governing effective.
The technical scheme that the present invention adopts for its technical problem of solution is:
Outdoor fan of air-conditioner speed-regulating control device, comprising: fans load; Have the transformer of multistage output, the input of transformer is connected with mains-supplied loop; Two or more contactor, each contactor comprises at least two group main contacts and closes the control coil of point state for controlling main contact, the input side of two groups of main contacts is connected with wherein an output and the ground wire of transformer, and outlet side is connected with fans load; Switch control module, described switching control module comprises control unit and the sensing unit for detecting air-conditioning work pressure, the output of sensing unit is connected with the input of control unit, control unit is provided with and closes sub-signal output, closes sub-signal output and is connected with the control coil of contactor.
Preferred embodiment, the quantity of contactor is three, comprise the first contactor, second contactor and the 3rd contactor, each contactor is provided with one group of normally closed auxiliary contact, control unit comprises three and controls change-over switch, it is the first control change-over switch, second controls change-over switch and the 3rd controls change-over switch, each control change-over switch comprises switching circuitry and the trigger end for the opening and closing of gauge tap loop, one end of switching circuitry is connected with mains-supplied loop, the other end is as conjunction sub-signal output, sensing unit is provided with three triggering signal outputs, sensing unit is connected with the trigger end controlling change-over switch respectively by triggering signal output, the side of the control coil of the first contactor is connected with the side of the normally closed auxiliary contact of the second contactor, the side of the control coil of opposite side and the second contactor and the side of the normally closed auxiliary contact of the 3rd contactor also connect, the conjunction sub-signal output that the opposite side and first of the normally closed auxiliary contact of the second contactor controls change-over switch is connected, the conjunction sub-signal output that the opposite side and second of the second contactor control coil controls change-over switch is connected, the opposite side of the normally closed auxiliary contact of the 3rd contactor is connected with ground wire with the side of control coil, the conjunction sub-signal output that the opposite side and the 3rd of control coil controls change-over switch is connected.
Preferred embodiment, described mains-supplied loop is serially connected with master switch.
The invention has the beneficial effects as follows: the present invention adopts a transformer with multistage output, the output of this transformer different stage is carried out switching by controlled contactor and is exported, during work, switch control module, based on detecting the air-conditioning work pressure obtained, control switching is carried out to contactor, blower fan can correspondingly be worked under different voltage swings, and then can run under corresponding rotating speed, and match with air-conditioning work pressure.Said apparatus cost is low, does not have the impact of electromagnetic noise during work; Compare chopping depressuring speed regulating control can reduce costs, especially without low-frequency noise; Its fault rate is also lower.
Accompanying drawing explanation
Be further detailed below in conjunction with the drawings and specific embodiments:
Fig. 1 is the composition schematic diagram of an embodiment of the present invention.
Detailed description of the invention
Main Function of the present invention is that the size according to air-conditioning work pressure changes the operating voltage of blower fan automatically, and the rotating speed of blower fan can be matched with air-conditioning work state, guarantees that air-conditioning system is stable normal.Particularly, the present invention can control under blower fan works in the voltage of a certain correspondence under different conditions, and because voltage is different, therefore corresponding change can occur the corresponding rotating speed of blower fan.With reference to Fig. 1, the inventive system comprises the contactor 4, switching control module etc. for fans load 1, the transformer 2 with multistage output, some quantity, certainly, the power supply of this device generally adopts mains-supplied loop 3.
Wherein, fans load 1 generally adopts mode in parallel to work, and the quantity of fans load 1 is not limit, and it is configured according to the demand of system.In the present embodiment, the quantity of fans load 1 is 3.When voltage swing changes, the rotating speed of fans load 1 changes.
Transformer 2 has multistage output, and its input is connected with mains-supplied loop 3.During work, line voltage (being generally 220V) is changed by it, and can produce the output voltage of the different size of multichannel.The output progression of transformer can be arranged as required, and quantity its switchable output voltages more are more, more accurate and accurate to the control speed governing of blower fan.In general embodiment, as shown in Figure 1, transformer comprises the requirement that three grades of outputs just can meet use.Particularly, in the embodiment in figure 1, transformer 2 has the output voltage values of 90V, 160V, 220V, when blower fan is operated in above-mentioned magnitude of voltage respectively in low, the pressure of corresponding air-conditioning work pressure, state that pressure is high.
Contactor 4 is arranged between transformer 2 and fans load 1, for respectively control transformer 2 every grade output and drive circuit 1 between the conducting state in loop.The quantity of contactor 4 is general identical with the output progression of transformer 2, certainly, also can be less than the output progression of transformer 2.Each contactor 4 comprises at least two group main contacts and closes the control coil of point state for controlling main contact, and the input side of two groups of main contacts is connected with wherein an output and the ground wire of transformer, and outlet side is connected with fans load.This contactor generally adopts conventional equipment to realize, and in conventional equipment, the quantity of main contact is generally three groups, only needs to use two groups wherein during use.Multiple contactor 4 at one time section can only have a conducting, and namely the output of transformer 2 only has a road to be connected with fans load 1.
Switch control module to be used for controlling a conjunction point state for all contactors 3.Switch control module and comprise control unit 51 and the sensing unit 52 for detecting air-conditioning work pressure, the output of sensing unit 52 is connected with the input of control unit 51, control unit 51 is provided with and closes sub-signal output, closes sub-signal output and is connected with the control coil of contactor 4.
In the present embodiment, the quantity of contactor 4 is three, comprises the first contactor 41, second contactor 42 and the 3rd contactor 43, and each contactor 41,42,43 is provided with one group of normally closed auxiliary contact.Control unit 51 comprises three and controls change-over switch, is that the first control change-over switch 511, second controls change-over switch 512 and the 3rd control change-over switch 513.Each control change-over switch 511,512,513 comprises switching circuitry and the trigger end for the opening and closing of gauge tap loop, and one end of switching circuitry is connected with mains-supplied loop, and the other end is as conjunction sub-signal output.Sensing unit 52 is provided with three triggering signal outputs, and sensing unit 52 is connected with the trigger end controlling change-over switch 511,512,513 respectively by triggering signal output.The side A1 of the control coil of the first contactor 41 is connected with the side NC of the normally closed auxiliary contact of the second contactor 42, the side A2 of the control coil of opposite side A2 and the second contactor 42 and side NC of the normally closed auxiliary contact of the 3rd contactor 43 also connects, the conjunction sub-signal output L1 that the opposite side NC and first of the normally closed auxiliary contact of the second contactor 42 controls change-over switch 511 is connected, the conjunction sub-signal output L2 that the opposite side A1 and second of the second contactor 42 control coil controls change-over switch 512 is connected, the opposite side NC of the normally closed auxiliary contact of the 3rd contactor 43 is connected with ground wire with the side A2 of control coil, the conjunction sub-signal output L3 that the opposite side A1 and the 3rd of control coil controls change-over switch 513 is connected.
During work, sensing unit 52 pairs of air-conditioning work pressure detect, and based on the signal detecting the data change triggering signal output obtained, the switching circuitry controlled accordingly in change-over switch are closed.When first control change-over switch 511 closed, second control change-over switch 512 and the 3rd control change-over switch 513 open time, the normally closed auxiliary contact of the second contactor 42 and the 3rd contactor 43 is in closure state, the first conjunction sub-signal output controlling change-over switch 511 forms loop along the normally closed auxiliary contact of the control coil of the normally closed auxiliary contact of the second contactor 42, the first contactor 41, the 3rd contactor 43 and ground wire successively, the main contact of the first contactor 41 closes, and the main contact of other contactors disconnects; In like manner, when second control change-over switch 512 closed, first control change-over switch 511 and the 3rd control change-over switch 513 open time, the second conjunction sub-signal output controlling change-over switch 512 forms loop along the normally closed auxiliary contact of the control coil of the second contactor 42, the 3rd contactor 43 and ground wire successively, the main contact of the second contactor 42 closes, and the main contact of other contactors disconnects; When the 3rd control change-over switch 513 closed, first control change-over switch 511 and second control change-over switch 512 open time, the 3rd conjunction sub-signal output controlling change-over switch 513 forms loop by the control coil of the 3rd contactor 43 and ground wire, the main contact of the 3rd contactor 43 closes, and the main contact of other contactors disconnects.Based on above-mentioned this control device of operation principle at one time in only have a contactor to close, realize the power supply to fans load 1.
In order to make device work more safe and reliable, mains-supplied loop 3 is generally also serially connected with master switch 6.
Embodiments of the present invention are not restricted to the described embodiments, as long as it reaches technique effect of the present invention with substantially identical means, all should belong to protection scope of the present invention.
Claims (2)
1. outdoor fan of air-conditioner speed-regulating control device, is characterized in that comprising:
Fans load (1);
Have the transformer (2) of multistage output, the input of transformer (2) is connected with mains-supplied loop (3);
Contactor (4);
Switch control module (5), described switching control module (5) comprises control unit (51) and the sensing unit (52) for detecting air-conditioning work pressure, the output of sensing unit (52) is connected with the input of control unit (51), control unit (51) is provided with and closes sub-signal output, closes sub-signal output and is connected with the control coil of contactor (4), it is characterized in that: the quantity of described contactor (4) is three, comprise the first contactor (41), the second contactor (42) and the 3rd contactor (43), each contactor (41,42,43) comprises at least two group main contacts and closes the control coil of point state for controlling main contact, the input side of two groups of main contacts is connected with wherein an output and the neutral conductor of transformer (2), and outlet side is connected with fans load (1), each contactor (41, 42, 43) one group of normally closed auxiliary contact is provided with, control unit (51) comprises three and controls change-over switch, it is the first control change-over switch (511), second controls change-over switch (512) and the 3rd controls change-over switch (513), each control change-over switch (511, 512, 513) switching circuitry and the trigger end for the opening and closing of gauge tap loop is comprised, one end of switching circuitry is connected with mains-supplied loop, the other end is as conjunction sub-signal output, sensing unit (52) is provided with three triggering signal outputs, sensing unit (52) by triggering signal output respectively with first, second, 3rd controls change-over switch (511, 512, 513) trigger end connects, the side of the control coil of the first contactor (41) is connected with the side of the second contactor (42) normally closed auxiliary contact, the side of the control coil of opposite side and the second contactor (42) and the side of the 3rd contactor (43) normally closed auxiliary contact also connect, the conjunction sub-signal output that the opposite side and first of the second contactor (42) normally closed auxiliary contact controls change-over switch (511) is connected, the conjunction sub-signal output that the opposite side and second of the second contactor (42) control coil controls change-over switch (512) is connected, the opposite side of the 3rd contactor (43) normally closed auxiliary contact is connected with the transformer neutral conductor with the side of control coil, the conjunction sub-signal output that the opposite side and the 3rd of control coil controls change-over switch (513) is connected.
2. outdoor fan of air-conditioner speed-regulating control device according to claim 1, is characterized in that described mains-supplied loop (3) is serially connected with master switch (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310164087.1A CN103277871B (en) | 2013-05-07 | 2013-05-07 | Outdoor fan of air-conditioner speed-regulating control device |
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| CN201310164087.1A CN103277871B (en) | 2013-05-07 | 2013-05-07 | Outdoor fan of air-conditioner speed-regulating control device |
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| CN103277871A CN103277871A (en) | 2013-09-04 |
| CN103277871B true CN103277871B (en) | 2015-12-02 |
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| CN104200956A (en) * | 2014-09-04 | 2014-12-10 | 特变电工西安电气科技有限公司 | Regulating and controlling system and method for fan of three-phase transformer |
| CN105698332A (en) * | 2014-11-24 | 2016-06-22 | 深圳市共济科技有限公司 | Multi-stage automatic fan speed regulation device and speed regulation method |
| CN105066325B (en) * | 2015-07-15 | 2018-05-22 | 广东美的暖通设备有限公司 | A kind of VRF Air Conditioning System control system and method |
| CN105650817B (en) * | 2016-01-25 | 2018-09-04 | 美的集团武汉制冷设备有限公司 | Control method, control device and the air conditioner of air conditioner |
| CN106054077A (en) * | 2016-07-08 | 2016-10-26 | 珠海格力电器股份有限公司 | Speed regulation voltage switching circuit and power panel |
| CN106765943B (en) * | 2016-12-16 | 2019-08-16 | 广东美的暖通设备有限公司 | Control method, control device and the constant speed Air-Cooled Heat Pump Unit of outer machine blower |
| CN108507135A (en) * | 2018-03-22 | 2018-09-07 | 苏州市职业大学 | A kind of power supply of motor and speed-regulating control circuit |
| CN111984050A (en) * | 2020-09-15 | 2020-11-24 | 江西琰圭技术服务有限公司 | Novel intelligent voltage-stabilizing adjustment system |
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| CN103277871A (en) | 2013-09-04 |
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Address after: 519075 A2, A District, Zhuhai, Guangdong Patentee after: RENOVO ZHUHAI LTD. Address before: 519075 A2, A District, Zhuhai, Guangdong Patentee before: Zhuhai Quangao Electromechanical Equipment Co.,Ltd. |
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Address after: 519000 Zhuhai City, Xiangzhou Province before the mountains of the mountain all the way up the mountain star road, building No. 37 Patentee after: RENOVO ZHUHAI LTD. Address before: 519075 A2, A District, Zhuhai, Guangdong Patentee before: RENOVO ZHUHAI LTD. |
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