CN201119527Y - Air blower circuit - Google Patents
Air blower circuit Download PDFInfo
- Publication number
- CN201119527Y CN201119527Y CNU200720122289XU CN200720122289U CN201119527Y CN 201119527 Y CN201119527 Y CN 201119527Y CN U200720122289X U CNU200720122289X U CN U200720122289XU CN 200720122289 U CN200720122289 U CN 200720122289U CN 201119527 Y CN201119527 Y CN 201119527Y
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- Prior art keywords
- circuit
- hair
- dryer
- direct
- wave
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- Expired - Fee Related
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Abstract
The utility model discloses a circuit of hair drier, comprising a heating and a rectifying circuit, wherein the rectifying circuit is connected with a direct-current brush-free motor fan via a filter circuit and a switched power supply, the heating and rectifying circuits comprise a cold-hot air switch, the cold air switch is connected with the filter circuit via a bridge rectifying circuit, one end of the hot air switch is connected with the cold air switch whose another end is connected with the bridge rectifying circuit via electric heater coil, the cold air switch is connected with the bridge rectifying circuit via a half-wave rectifying circuit, the hot air switch is connected with the bridge rectifying circuit via a half-wave rectifying circuit, the filter circuit is a spanned filter capacitor, and the direct-current brush-free motor fan is single-phase full-wave, two-phase half-wave, three-phase or multi-phase type.
Description
Technical field
The utility model relates to a kind of hair-dryer circuit, particularly a kind of hair-dryer circuit that adopts Direct-flow brushless motor fan.
Background technology
At present, mostly the hair-dryer on the market is to adopt built-in direct-current brush motor fan.This hair-dryer the sound that sends during except the fan air blast, also has the noise that brings because of carbon brush and commutator friction in use, has a strong impact on user healthy of long-term use hair-dryer.In addition, the carbon brush of brush motor directly contacts with commutator, big mechanical wear is arranged, thereby reduced reliability of operation and stability, causes shorten service life.
Summary of the invention
The purpose of this utility model is: a kind of hair-dryer circuit that adopts Direct-flow brushless motor fan to replace the direct-current brush motor fan is provided.This hair-dryer is through rectifying and wave-filtering, behind the switching power circuit, adopted the Direct-flow brushless motor fan of efficient, low noise, long-life performance, thoroughly solved problems such as use direct-current brush motor hair-dryer efficient is low, noise is big, the life-span is short.
The realization the technical solution of the utility model is: a kind of hair-dryer circuit, comprise heating and rectification circuit in the hair-dryer, and wherein said rectification circuit connects Direct-flow brushless motor fan through a filter circuit.
This hair-dryer circuit also comprises:
Described rectification circuit connects Direct-flow brushless motor fan through filter circuit, switching power circuit.
Heating and rectification circuit comprise hot and cold wind change-over switch in the described hair-dryer, and wherein cold switch connects filter circuit through bridge rectifier; Hot blast switch one termination cold switch, its other end is through electric heating wire connection bridge rectifier.
Described cold switch connects bridge rectifier through half-wave rectifying circuit.
Described hot blast switch connects bridge rectifier through half-wave rectifying circuit.
Described filter circuit is the filter capacitor of a cross-over connection.
Described Direct-flow brushless motor fan is single-phase full wave or two-phase half-wave or three-phase or heterogeneous.
The hair-dryer circuit that this is novel is with utilizing Switching Power Supply to provide power supply to Direct-flow brushless motor fan behind the ripple in the next level and smooth filter out power of capacitor.
The beneficial effects of the utility model are: reduce the noise content that motor produces when using hair-dryer significantly 1.; 2. motor is not perishable, long service life; 3. speed-regulating range width, it is little to generate heat, the operational efficiency height; 4. electromagnetic radiation is little, can be used for various environment.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
A frame of broken lines inside is divided into heating and rectification block diagram in the hair-dryer, and it mainly is to be heating wire and Direct-flow brushless motor fan power supply.
B frame of broken lines inside is divided into the power filter block diagram, and it mainly is the AC ripple in the filtering dc source, makes dc source steady.
C frame of broken lines inside is divided into Switching Power Supply and Direct-flow brushless motor fan block diagram.
This novel hair-dryer has fourth gear wind: low speed cold wind, high speed cold wind, low speed hot blast, high speed hot blast.
Connect the AC power of civil power when the hair-dryer circuit after, the low or first gear of closed cold switch, hair-dryer is started working; Power supply is through half-wave rectifying circuit and bridge rectifier, and the alternating current of input is transformed into the direct current of unidirectional pulsation; The unidirectional pulsating volage of the level and smooth rectification of the capacitor of wave circuit output after filtration again; After this again by switching power circuit, utilize Switching Power Supply to provide power supply to Direct-flow brushless motor fan, fan is rotated, hair-dryer blows out low speed cold wind.
The top gear of closed cold switch, power supply is powered by switch power supply road direction Direct-flow brushless motor fan behind the smothing filtering of bridge rectifier, filter circuit again, makes the Direct-flow brushless motor fan entry into service, and hair-dryer blows out high speed cold wind.
The low or first gear of closed in succession hot blast switch again, power supply connects main heating wire after half-wave rectifying circuit, main heating wire, secondary heating wire energising heating, again behind the smothing filtering of bridge rectifier, filter circuit, power by switch power supply road direction Direct-flow brushless motor fan, make the Direct-flow brushless motor fan entry into service, hair-dryer blows out the low speed hot blast.
Closed hot blast switch is to top gear, main heating wire, secondary heating wire energising heating, power supply is powered by switch power supply road direction Direct-flow brushless motor fan behind the smothing filtering of bridge rectifier, filter circuit, make the Direct-flow brushless motor fan entry into service, hair-dryer blows out the high speed hot blast.
This new DC brushless fan motor is single-phase full wave or two-phase half-wave or three-phase or heterogeneous.
Above-mentioned described embodiment sets forth and illustrates the utility model; but be not limited to disclosed any concrete form; all those skilled in the art retouch this novel technical scheme or are equal to replacement, also should be considered as this novel protection domain.
Claims (7)
1. a hair-dryer circuit comprises heating and rectification circuit in the hair-dryer, it is characterized in that described rectification circuit connects Direct-flow brushless motor fan through a filter circuit.
2. hair-dryer circuit according to claim 1 is characterized in that described rectification circuit connects Direct-flow brushless motor fan through filter circuit, switching power circuit.
3. hair-dryer circuit according to claim 1 is characterized in that heating in the described hair-dryer and rectification circuit comprises hot and cold wind change-over switch, and wherein cold switch connects filter circuit through bridge rectifier; Hot blast switch one termination cold switch, its other end is through electric heating wire connection bridge rectifier.
4. hair-dryer circuit according to claim 3 is characterized in that described cold switch connects bridge rectifier through half-wave rectifying circuit.
5. hair-dryer circuit according to claim 3 is characterized in that described hot blast switch connects bridge rectifier through half-wave rectifying circuit.
6. hair-dryer circuit according to claim 1 is characterized in that described filter circuit is the filter capacitor of a cross-over connection.
7. hair-dryer circuit according to claim 1 is characterized in that described Direct-flow brushless motor fan is single-phase full wave or two-phase half-wave or three-phase or heterogeneous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720122289XU CN201119527Y (en) | 2007-08-15 | 2007-08-15 | Air blower circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720122289XU CN201119527Y (en) | 2007-08-15 | 2007-08-15 | Air blower circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201119527Y true CN201119527Y (en) | 2008-09-24 |
Family
ID=40006741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720122289XU Expired - Fee Related CN201119527Y (en) | 2007-08-15 | 2007-08-15 | Air blower circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201119527Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939714A (en) * | 2016-10-12 | 2018-04-20 | 建准电机工业股份有限公司 | Blower and fan rotating speed control module thereof |
| CN113035032A (en) * | 2021-03-09 | 2021-06-25 | 山东电力高等专科学校 | Serial half-wave rectification type electricity stealing simulation device and simulation method |
-
2007
- 2007-08-15 CN CNU200720122289XU patent/CN201119527Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939714A (en) * | 2016-10-12 | 2018-04-20 | 建准电机工业股份有限公司 | Blower and fan rotating speed control module thereof |
| CN113035032A (en) * | 2021-03-09 | 2021-06-25 | 山东电力高等专科学校 | Serial half-wave rectification type electricity stealing simulation device and simulation method |
| CN113035032B (en) * | 2021-03-09 | 2022-09-30 | 山东电力高等专科学校 | Serial half-wave rectification type electricity stealing simulation device and simulation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080924 Termination date: 20130815 |