CN101446293A - Bath fan with soft start function - Google Patents
Bath fan with soft start function Download PDFInfo
- Publication number
- CN101446293A CN101446293A CNA2007101693816A CN200710169381A CN101446293A CN 101446293 A CN101446293 A CN 101446293A CN A2007101693816 A CNA2007101693816 A CN A2007101693816A CN 200710169381 A CN200710169381 A CN 200710169381A CN 101446293 A CN101446293 A CN 101446293A
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- fan
- motor
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- slow
- control module
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Abstract
A bath fan with soft start function comprises an impeller and a motor. The motor is connected with the impeller and drives the impeller to rotate; the motor is provided with a control module which drives and controls the rotating speed of the motor according to a soft start signal. The soft start signal includes a soft start section and a goal driven section; and the control module slowly increases the rotating speed of the body of the motor to the goal driven section according to the soft start section.
Description
Technical field
The present invention relates to a kind of bath fan, particularly a kind of bath fan with soft start function.
Background technique
Bathroom is indoor at present all can be equipped with bath fan, and when user's power-on, this bath fan promptly starts, and can increase the air ventilation in the sanitary and balneal room by this, and peculiar smell or aqueous vapor are taken out of.
Yet existing bath fan does not have the slow function that starts (soft-start), and therefore when bath fan started, fan is running at full speed at short notice, and the user can experience the noise that the rapid increase of bath fan rotating speed is brought significantly.The bath fan noise advance the speed approximately greater than 10 decibels (dB)/second, and noise can cause the uncomfortable impression of user.
In addition, bath fan is from state of rest and the full-speed operation that arrives needs very big inrush current, so can produce the electric current of surging (inrush current), abrupt voltage wave (voltage spike) or surge noise (spike noise) in the moment that starts, even generation arcing phenomenon, be electric arc (electric arc), cause the infringement of bath fan.
Moreover existing bath fan typically uses civil power provides its running required electric energy.Yet civil power is to belong to a kind of Ac kenel, and therefore, the energy of its consumption of fan of use Ac is relatively large, so comparatively consume electric power.
Summary of the invention
Because above-mentioned problem, purpose of the present invention can reduce noise and the generation of effectively suppress to surge electric current, abrupt voltage wave or surge noise for a kind of bath fan with soft start function is provided, and promotes production reliability, working life and energy-conservation.
For reaching above-mentioned purpose, a kind of bath fan with soft start function of the present invention comprises an impeller and a motor.Motor and impeller link and drives impeller is rotated, and motor has a motor body and a control module and motor body and electrically connects.Control module drives and controls the rotating speed of motor body according to a slow actuating signal.Slow actuating signal comprises a slow section and the target drives section of starting, and control module slowly improves the rotating speed of motor body to the target drives section according to the slow section that starts.
As mentioned above, a kind of bath fan with soft start function of the present invention makes bath fan slowly increase to rotating speed of target by the slow-speed of revolution by the rotating speed of control module according to slow actuating signal driving and control motor body.Compare with prior art, the present invention can reduce noise, and the generation of suppress simultaneously effectively to surge electric current, abrupt voltage wave or surge noise promotes production reliability and working life.
Description of drawings
Fig. 1 is the schematic representation of the bath fan of a kind of tool soft start function of preferred embodiment of the present invention;
Fig. 2 A and Fig. 2 B for bath fan of the present invention respectively by the schematic representation of DC electrical source and ac power supply supply power; And
Fig. 3 A and Fig. 3 B are the schematic representation of the slow actuating signal of bath fan of the present invention.
The reference numeral explanation
1: bath fan 11: impeller
12: motor 121: motor body
122: control module 21: AC/DC converter
211: step-down module 212: rectification module
S
AC: ac power supply S
DC: DC electrical source
S
W: operating voltage S
S, S
S1: slow actuating signal
A: the slow section B that starts: target drives section
C: initial speed stage.
Embodiment
Hereinafter with reference to relevant drawings, a kind of bath fan with soft start function according to preferred embodiment of the present invention is described, wherein, components identical will be illustrated with the components identical symbol.
Please refer to shown in Figure 1ly, a kind of bath fan 1 with soft start function of preferred embodiment of the present invention comprises an impeller 11 and a motor 12.Motor 12 links with impeller 11, and drives impeller 11 is rotated.Motor 12 has a motor body 121 and a control module 122.Control module 122 electrically connects with motor body 121.The present invention does not limit the form of impeller 11 and motor 12, and impeller 11 comprises a wheel hub and a plurality of flabellum (figure shows), described flabellum ring be arranged on wheel hub around.The motor body 121 of motor 12 can comprise a stator structure and a rotor structure etc., and stator structure drives rotor structure and rotates, and impeller 11; Control module 122 can be a microcontroller (Micro Control Unit, MCU).
Please refer to shown in Fig. 2 A and Fig. 2 B, motor 12 is by power supply power supply, and power supply for example is a direct current power supply S
DCAn or ac power supply S
ACShown in Fig. 2 A, when power supply is DC electrical source S
DCThe time, DC electrical source S
DCNeed to be depressurized to the operating voltage S of motor via a step-down module 211
WShown in Fig. 2 B, when power supply is ac power supply S
ACThe time, ac power supply S
ACNeed to be converted to DC electrical source by an AC/DC converter 21, and AC/DC converter 21 has more a rectification module 212 except having step-down module 211, itself and step-down module 211 electrically connect, and rectification module 212 is with the ac power supply S of input
ACBe converted to DC electrical source S
DC, step-down module 211 is depressurized to the operating voltage S of motor again
W, to provide this starting fan and the required electric energy that turns round; Wherein, above-mentioned rectification module 212 can be respectively general rectifier circuit and reduction voltage circuit with step-down module 211.
Slow actuating signal S
SCan for example be shown in Fig. 3 A.Slow actuating signal S
SComprise a slow section A and the target drives section B of starting, control module 122 slowly improves the rotating speed of motor body 121 to target drives section B according to the slow section A that starts.Control module 122 is the also adjustable slow slope that starts section A is that the rotating speed of may command motor body 121 is increased to target drives section B speed (or time) by the regulation and control slope, suppresses the generation of noise.
But slow startup section A smooth connection is slowly quickened the electric current of surging, abrupt voltage wave or the surge noise of avoiding rapid acceleration to produce in target drives section B to stablize.A slow startup section A also can be linearity or the quadratic curve mode is slowly quickened.Therefore, when bath fan 1 began to start, the rotating speed of motor was from the static rotating speed of target (for example at full speed) that slowly increases to.In the present invention, bath fan 1 is no more than 2 decibels/second according to the slow section noise speed that the A operation process is produced that starts.
Fig. 3 B shows another kind of slow actuating signal S
S1Slow actuating signal S
S1Except comprising slow the startup section A and the target drives section B, more comprise an initial speed stage C.Control module 122 makes motor before accelerated service according to initial speed stage C, maintains an initial rotating speed earlier, starts rotating speed that section A slowly improves motor to target drives section B according to slow again, and is so stable and slowly quicken, and can avoid the generation of noise equally.
In addition, bath fan with soft start function of the present invention can adopt DC fan, it is to change DC electrical source and export this DC fan to the ac power supply (civil power) that will be connected by an AC/DC converter 21, and then driving DC fan running, yet on it used, DC fan had the advantage of saving electric power on ac fan.
Again, bath fan with soft start function of the present invention can also adopt alternating direct-current fan (Electrically Commutated fan, EC fan), it is to change DC electrical source and export this fan to the ac power supply (civil power) that will be connected by the AC/DC converter that inside is provided with, and then drive this fan running, yet on it uses, owing to do not need to utilize in addition other ac/dc conversion equipment, therefore, can simplify its circuit design.
In sum, a kind of bath fan with soft start function of the present invention makes bath fan slowly increase to rotating speed of target by the slow-speed of revolution by the rotating speed of control module according to slow actuating signal driving and control motor body.Compare with prior art, the present invention can reduce noise, and the generation of suppress simultaneously effectively to surge electric current, abrupt voltage wave or surge noise promotes production reliability and working life.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be included in the claim of the present invention its equivalent modifications of carrying out or change.
Claims (15)
1, a kind of fan with soft start function comprises:
One impeller; And
One motor links with this impeller and drives this wheel rotation, and this motor has a control module, and it drives and control the rotating speed of this motor according to a slow actuating signal;
Wherein, this slow actuating signal comprises a slow section and the target drives section of starting, and this control module slowly improved the rotating speed of this motor to this target drives section according to should slowly starting section.
2, fan as claimed in claim 1, wherein, this slow actuating signal more comprises an initial speed stage, makes this control module make motor before accelerated service according to this initial speed stage, maintains an initial rotating speed earlier.
3, fan as claimed in claim 1, wherein, this motor is powered by a power supply, and this power supply is a direct current power supply or an ac power supply.
4, fan as claimed in claim 3, wherein, this ac power supply is converted to a direct current power supply via an AC/DC converter.
5, fan as claimed in claim 4, wherein, this AC/DC converter comprises a rectification module or a rectification circuit.
6, bath fan as claimed in claim 5, wherein, this AC/DC converter more comprises a step-down module, itself and this rectification module electrically connects.
7, bath fan as claimed in claim 3, wherein, this DC electrical source is depressurized to the operating voltage of this motor via a step-down module.
8, as claim 6 or 7 described fans, wherein, this step-down module is a reduction voltage circuit.
9, fan as claimed in claim 1, wherein, this slow actuating signal is produced by this control module, and this control module is regulated and control the slope that should delay the startup section of this slow actuating signal.
10, as claim 1 or 9 described fans, wherein, this control module is a microcontroller.
11, fan as claimed in claim 1, wherein, this slow actuating signal is produced by an external means, is resent to this control module, and this external means is a soft-start circuit.
12, fan as claimed in claim 1, wherein, this slow startup section smooth connection is in this target drives section.
13, fan as claimed in claim 1, wherein, this slow section that starts is linearity or quadratic curve.
14, fan as claimed in claim 1 wherein, was no more than 2 decibels/second according to should slowly starting section noise speed that running is produced.
15, fan as claimed in claim 1, it is a DC fan, an ac fan or an alternating direct-current fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101693816A CN101446293A (en) | 2007-11-26 | 2007-11-26 | Bath fan with soft start function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101693816A CN101446293A (en) | 2007-11-26 | 2007-11-26 | Bath fan with soft start function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101446293A true CN101446293A (en) | 2009-06-03 |
Family
ID=40742111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101693816A Pending CN101446293A (en) | 2007-11-26 | 2007-11-26 | Bath fan with soft start function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101446293A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386822A (en) * | 2010-09-02 | 2012-03-21 | 李明烈 | Integrated type fan driving device |
| CN111219351A (en) * | 2020-01-17 | 2020-06-02 | 珠海格力电器股份有限公司 | Fan rotating speed control method and device, air conditioner external unit device and air conditioning equipment |
-
2007
- 2007-11-26 CN CNA2007101693816A patent/CN101446293A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386822A (en) * | 2010-09-02 | 2012-03-21 | 李明烈 | Integrated type fan driving device |
| CN111219351A (en) * | 2020-01-17 | 2020-06-02 | 珠海格力电器股份有限公司 | Fan rotating speed control method and device, air conditioner external unit device and air conditioning equipment |
| CN111219351B (en) * | 2020-01-17 | 2021-01-12 | 珠海格力电器股份有限公司 | Fan rotating speed control method and device, air conditioner external unit device and air conditioning equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090603 |