CN105698332A - Multi-stage automatic fan speed regulation device and speed regulation method - Google Patents
Multi-stage automatic fan speed regulation device and speed regulation method Download PDFInfo
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- CN105698332A CN105698332A CN201410678390.8A CN201410678390A CN105698332A CN 105698332 A CN105698332 A CN 105698332A CN 201410678390 A CN201410678390 A CN 201410678390A CN 105698332 A CN105698332 A CN 105698332A
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Abstract
The invention provides a multi-stage automatic fan speed regulation device and a speed regulation method. The speed regulation device comprises a pressure switch module and a transformer module, wherein the pressure switch module is used to obtain a current condensing pressure on the outer side of an air conditioning room and is used to compare the current condensing pressure on the outer side of the air conditioning room with a pressure threshold value; the transformer module is used to change an output alternating voltage according to the comparison result between the current condensing pressure on the outer side of the air conditioning room and the pressure threshold value and is used to regulate a rotation speed of a fan according to the output alternating voltage; and the pressure switch module is connected to the transformer module, and the transformer module is connected to the fan. Under different condensing system pressures, the transformer module can be connected to different transformer input ends, so that the voltage at an output end of the transformer module can be changed; multi-stage voltage switching is realized among multiple pressure intervals; and the problem that frequent starting and stopping of the fan cause fluctuations of temperature and pressure of a refrigeration system and thus lead to impact on a compressor can be avoided.
Description
Technical field
The present invention relates to monophase machine control field, particularly to a kind of multistage automatic fan speed adjuster and speed regulating method。
Background technology
In existing computer-room air conditioning system, for ensureing that air-conditioning can be properly functioning in zones of different, Various Seasonal, it is necessary that the condensing pressure of refrigeration system will not be too high or too low；It is therefore necessary to outdoor condensation fan is carried out speed governing carry out the condensing pressure of stabilisation systems；In current industry, the speed governing main method of outdoor fan has: start-stop control, chopping regulating speed, frequency control, but start-stop controls because blower fan is frequently carried out start and stop, causes that system temperature, pressure oscillation are big, compressor is impacted, and reduces electrical machinery life。Copped wave Adjusted Option exists control relatively costly, and control circuit of chopping can produce multiple harmonic, and motor can cause irresistible impact and noise；It is high that frequency control there is also control cost, and in input and output terminal circuit, can produce harmonic voltage in various degree and harmonic current；Spatially can Radiative EMI, interference surrounding devices properly functioning, be most commonly that the shortcomings such as the deadlock that causes control chip。
Therefore, prior art has yet to be improved and developed。
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, it is an object of the invention to provide a kind of multistage automatic fan speed adjuster and speed regulating method, owing to can make transformer module under different condenser system pressure, access different transformer inputs, change the voltage of transformer module outfan, realize carrying out voltage switching at multiple pressure ranges, solve start-stop in prior art and control because blower fan frequently being carried out start and stop, cause that system temperature, pressure oscillation are big, compressor is impacted, and reduces the defect of electrical machinery life。
In order to achieve the above object, this invention takes techniques below scheme:
A kind of multistage automatic fan speed adjuster, wherein, including:
Pressure switch module, is used for obtaining current air conditioner room outdoor condensing pressure, and is compared with the pressure threshold preset by described current air conditioner room outdoor condensing pressure；
Transformer module, for changing output alternating voltage according to the comparative result of described current air conditioner room outdoor condensing pressure with described pressure threshold, and regulates the rotating speed of multistage blower fan according to described output alternating voltage；
Described pressure switch module connection transformer module, described transformer module connecting fan。
Described multistage automatic fan speed adjuster, wherein, also includes:
Power module, is used for powering；
Described power module connects described pressure switch module and described transformer module。
Described multistage automatic fan speed adjuster, wherein, described pressure switch module includes the first pressure switch, the second pressure switch and the 3rd pressure switch；The off1 pin of described first pressure switch connects described power module, the on1 pin of described first pressure switch connects described transformer module, the out1 pin of described first pressure switch connects described transformer module, the off2 pin of described second pressure switch connects described power module, the off2 pin of described second pressure switch connects described power module, the on2 pin of described second pressure switch connects described transformer module, the out2 pin of described second pressure switch connects described transformer module, the off3 pin of described 3rd pressure switch connects described power module, the out3 pin of described 3rd pressure switch connects described transformer module。
Described multistage automatic fan speed adjuster, wherein, described transformer module includes first coil, the second coil and tertiary coil；1 end of described first coil connects described power module, 2 ends of described first coil connect the out1 pin of described first pressure switch, 3 ends of described second coil connect the on1 pin of described first pressure switch, 4 ends of described second coil connect the out2 pin of described second pressure switch, 5 ends of described tertiary coil connect the on2 pin of described second switch, and 6 ends of described tertiary coil connect the out3 pin of described 3rd switch。
Described multistage automatic fan speed adjuster, wherein, described first pressure switch, described second pressure switch and described 3rd pressure switch are KSC mechanical differential and compress switch。
Described multistage automatic fan speed adjuster, wherein, described transformer module is the autotransformer of QZB model。
Described multistage automatic fan speed adjuster, wherein, described power module is the alternating current power supply of 380V/50Hz。
A kind of speed regulating method of described multistage automatic fan speed adjuster, wherein, described speed regulating method includes step:
A, obtain current air conditioner room outdoor condensing pressure by described pressure switch module, and described current air conditioner room outdoor condensing pressure is compared with the pressure threshold pre-set；
B, comparative result according to described current air conditioner room outdoor condensing pressure and described pressure threshold change the output alternating voltage of described transformer module, and regulate the rotating speed of blower fan according to the output alternating voltage of described transformer module。
The multistage automatic fan speed adjuster of one provided by the invention and speed regulating method, arrangements for speed regulation include: pressure switch module, are used for obtaining current air conditioner room outdoor condensing pressure, and are compared with described pressure threshold by described current air conditioner room outdoor condensing pressure；Transformer module, for changing output alternating voltage according to the comparative result of described current air conditioner room outdoor condensing pressure with described pressure threshold, and regulates the rotating speed of blower fan according to described output alternating voltage；Described pressure switch module connection transformer module, described transformer module connecting fan。Owing to can make transformer module under different condenser system pressure, access different transformer inputs, change the voltage of transformer module outfan, realize carrying out voltage switching at multiple pressure ranges, avoid because blower fan frequently being carried out start and stop, and cause that system temperature, pressure oscillation are big, the problem that compressor is impacted。
Accompanying drawing explanation
Fig. 1 is the structured flowchart of multistage automatic fan speed adjuster preferred embodiment of the present invention。
Fig. 2 is the circuit diagram of multistage automatic fan speed adjuster of the present invention。
Fig. 3 is the flow chart of the speed regulating method preferred embodiment of multistage automatic fan speed adjuster of the present invention。
Detailed description of the invention
The present invention provides a kind of multistage automatic fan speed adjuster and speed regulating method, and for making the purpose of the present invention, technical scheme and effect clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment。Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention。
Referring to Fig. 1, it is the structured flowchart of multistage automatic fan speed adjuster preferred embodiment of the present invention。As shown in Figure 1, multistage automatic fan speed adjuster of the present invention, for regulating the rotating speed of single phase ac blower fan 10, comprising: pressure switch module 100, for obtaining current air conditioner room outdoor condensing pressure, and described current air conditioner room outdoor condensing pressure is compared with the pressure threshold preset；Transformer module 200, for changing output alternating voltage according to the comparative result of described current air conditioner room outdoor condensing pressure with described pressure threshold, and regulates the rotating speed of multistage blower fan according to described output alternating voltage；Described pressure switch module 100 connection transformer module 200, described transformer module 200 connects multistage blower fan。Owing to can make transformer module 200 under different condenser system pressure; access different transformer inputs; change the voltage of transformer module 200 outfan; realize carrying out different voltage switching at multiple pressure ranges; it is effectively protected the motor of blower fan, it is to avoid the motor of frequent stop and start blower fan and the problem that causes fan life to decline。
Further, as it is shown in figure 1, multistage automatic fan speed adjuster described in the present embodiment also includes the power module 20 for powering, described power module 20 connects described pressure switch module 100 and described transformer module 200。When being embodied as, described power module 20 adopts the alternating current power supply of common 380V/50Hz or 220V/50Hz。
Please referring also to Fig. 2, it is the circuit diagram of multistage automatic fan speed adjuster of the present invention。In specific implementation process, described pressure switch module 100 includes the first pressure switch SW1, the second pressure switch SW2 and the three pressure switch SW3；The off1 pin of described first pressure switch SW1 connects described power module 20, the on1 pin of described first pressure switch SW1 connects described transformer module 200, the out1 pin of described first pressure switch SW1 connects described transformer module 200, the off2 pin of described second pressure switch SW2 connects described power module 20, the on2 pin of described second pressure switch SW2 connects described transformer module 200, the out2 pin of described second pressure SW2 switch connects described transformer module 200, the off3 pin of described 3rd pressure switch SW3 connects described power module 20, the out3 pin of described 3rd pressure switch SW3 connects described transformer module 200, the on3 pin of described 3rd pressure switch SW3 is unsettled。
Concrete, described first pressure switch SW1, described second pressure switch SW2 and described 3rd pressure switch SW3 are KSC mechanical differential and compress switch。Before described multistage automatic fan speed adjuster runs, need in advance to described first pressure switch SW1, second pressure switch SW2 and the three pressure switch SW3 is respectively provided with different pressure thresholds, then pass through above three pressure switch and obtain current air conditioner room outdoor condensing pressure, afterwards by current air conditioner room outdoor condensing pressure and described first pressure switch SW1, the pressure threshold that second pressure switch SW2 and the three pressure switch SW3 each sets compares, determine the on off state of above three pressure switch, thus changing the output alternating voltage size of described transformer module 200, thus controlling the rotating speed of blower fan。When being embodied as, described pressure switch module 100 is not limited to only arrange 3 pressure switches, and it can also only arrange 1, the pressure switch of 2 or more than 3。
Referring again to Fig. 2, in specific implementation process, described transformer module 200 is the autotransformer of QZB model, and it is a kind of primary and secondary transformator on same winding, its former secondary has the contact of directly electricity, and its low-voltage coil is exactly a part for high-tension coil。Described transformer module 200 includes first coil 210, the second coil 220 and tertiary coil 230；1 end of described first coil 210 connects described power module 20,2 ends of described first coil 210 connect the out1 pin of described first pressure switch SW1,3 ends of described second coil 220 connect the on1 pin of described first pressure switch SW1,4 ends of described second coil 220 connect the out2 pin of described second pressure switch SW2,5 ends of described tertiary coil 230 connect the on2 pin of described second switch SW2, and 6 ends of described tertiary coil 230 connect the out3 pin of described 3rd switch SW3。When being embodied as, described transformer module 200 is not limited to only arrange 3 coils, and it can also only arrange 1, the coil of 2 or more than 3。
In conjunction with Fig. 2 it can be seen that the operation logic of multistage automatic fan speed adjuster of the present invention is as follows:
Described first pressure switch SW1, second pressure switch SW2 and the three pressure switch SW3 sets three different grades of pressure thresholds from big to small respectively, it is designated as the first pressure threshold P1 respectively, second pressure threshold P2 and the three pressure threshold P3, and P1 > P2 > P3, when air conditioner room outdoor condensing pressure P is more than the first pressure switch SW1 setting value (P > P1), trigger the first pressure switch SW1 mechanical contact and be at off1 pin, now described second pressure switch SW2, 3rd pressure switch SW3 machinery respectively gets an electric shock and is respectively at on2 pin and on3 pin, now the primary coil of transformer module 200 accesses the shortest, transformator output end voltage is maximum, rotation speed of fan is the highest。
When air conditioner room outdoor condensing pressure P is between the first pressure threshold P1 and the second pressure threshold P2 (), again trigger the second pressure switch SW2 mechanical contact and be at off2 pin, owing to the first pressure switch SW1 mechanical contact has been in off1 pin before, so time power supply 380V be loaded directly on 1,4 ends on the former limit of transformer module 200, the former limit of transformer module 200 is become 1,4 ends by 1,2 ends, and primary coil is elongated, and secondary coil is constant, secondary output voltage reduces, and rotation speed of fan declines。
When air conditioner room outdoor condensing pressure P is between the second pressure threshold P2 and the 3rd pressure threshold P3 (), again trigger the 3rd pressure switch SW3 mechanical contact and be at off3 pin, it is in off1 pin due to the first pressure switch SW1 mechanical contact before and the second pressure switch SW2 has also been in off2 pin, so time power supply 380V be loaded directly on the end of transformer module 200 former limit 1,6, transformer primary side is become 1,6 ends by 1,2 ends, and primary coil is elongated, and secondary coil is constant, secondary output voltage reduces, and rotation speed of fan continues to decline。
When air conditioner room outdoor condensing pressure P is less than the 3rd pressure threshold P3(P < P3) time, the input circuit of transformer module 200 disconnects, and transformator output end voltage is 0V, fan parking。
Visible, multistage automatic fan speed adjuster provided by the present invention have applied widely, simultaneously have simple in construction, safe and reliable, cost is low and be easily installed, the advantage such as debugging。
Based on above-mentioned multistage automatic fan speed adjuster, present invention also offers a kind of multistage speed regulating method automatically having fan speed adjuster。Referring to Fig. 3, it is the flow chart of speed regulating method preferred embodiment of arrangements for speed regulation of multistage automatic blower fan of the present invention。As it is shown on figure 3, the speed regulating method of the arrangements for speed regulation of described multistage automatic blower fan includes:
Step S100, obtain current air conditioner room outdoor condensing pressure by described pressure switch module, and described current air conditioner room outdoor condensing pressure is compared with the pressure threshold pre-set；
Step S200, comparative result according to described current air conditioner room outdoor condensing pressure and described pressure threshold change the output alternating voltage of described transformer module, and regulate the rotating speed of blower fan according to the output alternating voltage of described transformer module。
In sum, the multistage automatic fan speed adjuster of one provided by the invention and speed regulating method, arrangements for speed regulation include: pressure switch module, are used for obtaining current air conditioner room outdoor condensing pressure, and are compared with described pressure threshold by described current air conditioner room outdoor condensing pressure；Transformer module, for changing output alternating voltage according to the comparative result of described current air conditioner room outdoor condensing pressure with described pressure threshold, and regulates the rotating speed of blower fan according to described output alternating voltage；Described pressure switch module connection transformer module, described transformer module connecting fan。Owing to can make transformer module under different condenser system pressure, access different transformer inputs, change the voltage of transformer module outfan, realize carrying out voltage switching at multiple pressure ranges, avoid because blower fan frequently being carried out start and stop, and cause that system temperature, pressure oscillation are big, the problem that compressor is impacted。
It is understood that for those of ordinary skills, it is possible to it is equal to replacement according to technical scheme and inventive concept thereof or is changed, and all these are changed or replace the scope of the claims that all should belong to appended by the present invention。
Claims (8)
1. a multistage automatic fan speed adjuster, it is characterised in that including:
Pressure switch module, is used for obtaining current air conditioner room outdoor condensing pressure, and is compared with the pressure threshold preset by described current air conditioner room outdoor condensing pressure；
Transformer module, for changing output alternating voltage according to the comparative result of described current air conditioner room outdoor condensing pressure with described pressure threshold, and regulates the rotating speed of multistage blower fan according to described output alternating voltage；
Described pressure switch module connection transformer module, described transformer module connecting fan。
2. multistage automatic fan speed adjuster according to claim 1, it is characterised in that also include:
Power module, is used for powering；
Described power module connects described pressure switch module and described transformer module。
3. the arrangements for speed regulation of multistage automatic blower fan according to claim 2, it is characterised in that described pressure switch module includes the first pressure switch, the second pressure switch and the 3rd pressure switch；The off1 pin of described first pressure switch connects described power module, the on1 pin of described first pressure switch connects described transformer module, the out1 pin of described first pressure switch connects described transformer module, the off2 pin of described second pressure switch connects described power module, the off2 pin of described second pressure switch connects described power module, the on2 pin of described second pressure switch connects described transformer module, the out2 pin of described second pressure switch connects described transformer module, the off3 pin of described 3rd pressure switch connects described power module, the out3 pin of described 3rd pressure switch connects described transformer module。
4. multistage automatic fan speed adjuster according to claim 3, it is characterised in that described transformer module includes first coil, the second coil and tertiary coil；1 end of described first coil connects described power module, 2 ends of described first coil connect the out1 pin of described first pressure switch, 3 ends of described second coil connect the on1 pin of described first pressure switch, 4 ends of described second coil connect the out2 pin of described second pressure switch, 5 ends of described tertiary coil connect the on2 pin of described second switch, and 6 ends of described tertiary coil connect the out3 pin of described 3rd switch。
5. multistage automatic fan speed adjuster according to claim 3, it is characterised in that described first pressure switch, described second pressure switch and described 3rd pressure switch are KSC mechanical differential and compress switch。
6. the arrangements for speed regulation of multistage automatic blower fan according to claim 1, it is characterised in that described transformer module is the autotransformer of QZB model。
7. the arrangements for speed regulation of multistage automatic blower fan according to claim 2, it is characterised in that described power module be 380V/50Hz or 220V/50Hz alternating current power supply。
8. the speed regulating method of multistage automatic fan speed adjuster as described in any one of claim 1-7, it is characterised in that described speed regulating method includes step:
A, obtain current air conditioner room outdoor condensing pressure by described pressure switch module, and described current air conditioner room outdoor condensing pressure is compared with the pressure threshold pre-set；
B, comparative result according to described current air conditioner room outdoor condensing pressure and described pressure threshold change the output alternating voltage of described transformer module, and regulate the rotating speed of blower fan according to the output alternating voltage of described transformer module。
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| CN201410678390.8A CN105698332A (en) | 2014-11-24 | 2014-11-24 | Multi-stage automatic fan speed regulation device and speed regulation method |
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| CN201410678390.8A CN105698332A (en) | 2014-11-24 | 2014-11-24 | Multi-stage automatic fan speed regulation device and speed regulation method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106287889A (en) * | 2016-09-30 | 2017-01-04 | 宁波方太厨具有限公司 | The rotation speed of fan Automatic adjustment method of range hood and realize the adjusting means of the method |
| CN106440242A (en) * | 2016-10-24 | 2017-02-22 | 合肥舒实工贸有限公司 | Air conditioner temperature control device based on adjustment of rotational speed of cooling fan |
| CN106658796A (en) * | 2016-12-26 | 2017-05-10 | 佛山市顺德区美的电热电器制造有限公司 | Voltage regulator circuit and voltage regulating method |
| CN110094851A (en) * | 2019-05-28 | 2019-08-06 | 芜湖美智空调设备有限公司 | Control method, device and the air conditioner of air conditioner |
| CN110094860A (en) * | 2019-05-28 | 2019-08-06 | 芜湖美智空调设备有限公司 | Control method, device and the air conditioner of air conditioner |
| CN110173835A (en) * | 2019-05-10 | 2019-08-27 | 广东美的制冷设备有限公司 | Control method, device and the air conditioner of air conditioner |
| CN110332620A (en) * | 2019-05-28 | 2019-10-15 | 广东申菱环境系统股份有限公司 | A kind of control method of air cooled heat pump condensation fan |
| CN111660753A (en) * | 2019-03-05 | 2020-09-15 | 上汽通用汽车有限公司 | Automatic control system for pressure in automobile air conditioner pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110332620A (en) * | 2019-05-28 | 2019-10-15 | 广东申菱环境系统股份有限公司 | A kind of control method of air cooled heat pump condensation fan |
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