CN201681322U - Voltage converting circuit of electric blower - Google Patents
Voltage converting circuit of electric blower Download PDFInfo
- Publication number
- CN201681322U CN201681322U CN2010201298797U CN201020129879U CN201681322U CN 201681322 U CN201681322 U CN 201681322U CN 2010201298797 U CN2010201298797 U CN 2010201298797U CN 201020129879 U CN201020129879 U CN 201020129879U CN 201681322 U CN201681322 U CN 201681322U
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- resistor
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Abstract
The utility model relates to a voltage converting circuit of an electric blower, mainly solving the problems that under two disproportionate voltages, the output power of a common blower is inconsistent, and that the circuit of a blower equipped with a stabilization device is complicated. The converting circuit comprises a power switch, a motor and an electric heating wire, wherein a voltage switch is connected with the electric heating wire in series; two ends of the motor are connected to the electric heating wire; a further arranged switcher is connected with the electric heating wire and divides the electric heating wire into a front-end resistor and a rear-end resistor connected in parallel; an adjustment resistor is connected in series with the one with smaller resistance value of the front-end resistor and the rear-end resistor; and the resistance value of the resistor with the smaller resistance value connected with the adjustment resistor in series equals to that of the resistor with greater resistance value of the front-end resistor and the rear-end resistor. The utility model has the advantage that the output power of the electric blower can be consistent under disproportionate voltages, thereby guaranteeing the working stability of the electric blower.
Description
Technical field
The utility model relates to a kind of hair-dryer circuit, relate in particular to a kind of under the disproportionate situation of voltage the hair-dryer voltage conversion circuit of output power unanimity.
Background technology
In the hair-dryer use, its operating voltage has two kinds usually, as 120V, 220V,
In the traditional circuit design of past, adopt two groups of resistance wires, at 220V with same resistance
During voltage power supply, use one group of resistance wire, during as if the 120V voltage power supply, adopt two groups of resistance wires
Parallel connection, but like this under two kinds of voltages, their output power is different.China's utility model patent 92241558.7 discloses a kind of power output stabilising arrangement of stepless adjustable temperature blowing machine, comprises a gain control circuit, and its resistance R 1, R2, R3, R4 that is used by the variable resistor unit and the dividing potential drop of two interlocks forms; Comprise a resistance R 5, with R4 mutually and connect, comprise that also one excites IC, its 6th pin is connected on the aforementioned variable resistor unit, crus secunda is connected to the gate terminal of a power controller via a resistance.This hair-dryer can be when the circuit voltage change, the line voltage that detects this change rising is compared at excitation control circuit with the instruction signal that sets, and then produce new error signal, enter and excite IC, shot point with the power controlling controller, make the change of line voltage can obtain change, and maintain on the bearing power that sets.
But this circuit can only be adjusted the fluctuation of voltage in the circuit, and when the operating voltage of hair-dryer different and with the out-of-proportion situation of primary voltage under, the effect that this circuit is just regulated is not very desirable just.In addition, the structure more complicated of this circuit, manufacturing cost is also high.
Summary of the invention
The utility model has mainly solved general hair-dryer under two disproportionate voltage condition, the inconsistent problem of power of output, and some band stabilising arrangement hair-dryer circuit complicated problems, provide a kind of circuit advantages of simple, the hair-dryer voltage conversion circuit of output power unanimity under two disproportionate voltage condition.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of hair-dryer voltage conversion circuit, comprise power switch, motor and heating wire, voltage switch and heating wire are in series, described motor two ends are connected on the heating wire, also being provided with switch links to each other with heating wire, switch is divided into front end resistance and rear end resistance with heating wire, front end resistance and rear end resistance are in parallel, and be in series with one on that resistance that resistance is little in front end resistance and rear end resistance and adjust resistance, the little resistance of this resistance and the resistance after adjustment resistance is connected equal the resistance of that resistance that resistance is big in front end resistance and the rear end resistance.According to horse-power formula P=U^2/R, when inserting low voltage circuit, make power equal former performance number, then need proportional resistance that reduces heating wire, in addition, should be the hair-dryer circuit, will guarantee that also the wind-heat degree that blows out is even, this just requires every electrothermal wire heating the same.In the utility model by switch with the heating wire separated into two parts and be in parallel, and the resistance of on a low resistance of resistance, connecting again, adjust the two-way resistance value unanimity that this is in parallel, when being connected, circuit is lower than 220V like this, and under the out-of-proportion situation of voltage and 220V, can make that the output power of hair-dryer is consistent with the power under being connected 220V, guarantee that like this hair-dryer always works under the same power.
A kind of preferred version as such scheme, described switch and heating wire are in series, this switch comprises 5 stationary contacts: stationary contact a, stationary contact b, stationary contact c, stationary contact d and stationary contact e, and two movable contact springs: movable contact spring f and movable contact spring g, stationary contact a links to each other with plug, stationary contact b is connected on the heating wire, heating wire is divided into front end resistance and rear end resistance, stationary contact d is connected the heating wire front end after resistance is connected with adjusting, stationary contact e is connected to the heating wire rear end, and movable contact spring f is arranged on the stationary contact a, and movable contact spring f links to each other with stationary contact b or stationary contact e, movable contact spring g is arranged on the stationary contact d, and movable contact spring f links to each other with stationary contact c or stationary contact e.Here provided when inserting voltage and be lower than 220V, and with the out-of-proportion physical circuit setting of 220V, under low-voltage state, movable contact spring f is connected on the stationary contact b, makes stationary contact a and stationary contact b conducting, and movable contact spring g is connected on the stationary contact d, stationary contact e and stationary contact d are conducted, and stationary contact b is connected on the heating wire near on the position of rear end, makes front end resistance greater than rear end resistance, and rear end resistance and the resistance of adjusting resistance equal the resistance of front end resistance.Here voltage conversion circuit can be specifically designed as between a certain voltage and 220V and change, and then stationary contact b is connected to stationkeeping on the heating wire in the circuit, and it is nonadjustable adjusting resistance.Certainly this circuit also can be designed as adjustable, then can make an adjustable resistance with adjusting resistance and heating wire, by regulate adjusting resistance, and the resistance of front and back ends resistance, make voltage square equal 220V all the time with the ratio of parallel resistance resistance the time performance number.
The utility model has the advantages that to make hair-dryer under the disproportionate situation of voltage, still can make output power consistent, guaranteed the stability of hair dryer work, the circuit structure advantages of simple, it is low to manufacture cost.
Description of drawings
Fig. 1 is the circuit diagram that the utility model is worked under the disproportionate situation of voltage;
Fig. 2 is the circuit diagram that the utility model is worked under the voltage normal condition.
Embodiment:
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is further described.
Embodiment:
A kind of hair-dryer voltage conversion circuit of present embodiment, provide a kind of circuit that can between 220V and 110V, change, as depicted in figs. 1 and 2, this circuit includes plug, switch 1, heating wire 2, adjusts resistance 3, motor 5 and power switch 4, one end of plug links to each other with switch 1, the other end of plug links to each other with power switch 4, heating wire 2 and adjustment resistance 3 are connected between switch 1 and the power switch 4, motor 5 connects the output terminal of current rectifying and wave filtering circuit, and the input end of current rectifying and wave filtering circuit is connected on the heating wire 2.As shown in Figure 1, this switch 1 comprises 5 stationary contact a, b, c, d, e and two movable contact spring f, g, movable contact spring f and movable contact spring g are separately positioned on stationary contact a and the stationary contact e, stationary contact a links to each other with the input end of plug, stationary contact b is connected on the heating wire 2 near rear end, heating wire is divided into front end resistance 21 and rear end resistance 22, and stationary contact d is connected heating wire 2 front ends after resistance 3 is connected with adjusting, and stationary contact e is connected to heating wire 2 rear ends.
As shown in Figure 1, this circuit is for working as the circuit structure that is operated under the 120V voltage, the movable contact spring f of switch 1 takes and puts on stationary contact b, movable contact spring g takes and puts on stationary contact e, this moment, electric current was by stationary contact b, flow into heating wire by the position between heating wire 2 two ends, then this heating wire has been divided into front end resistance 21 and rear end resistance 22 two parts, be connected on the two ends of heating wire and adjust resistance 3, formed and adjusted the parallel circuit that resistance 3 and rear end resistance 22 and front end resistance 21 are in parallel, the resistance of this adjustment resistance 3 and rear end resistance 22 and equal front end resistance 21, and circuit voltage 120V square with the ratio of the all-in resistance of parallel circuit and circuit voltage 220V square with being in equal proportions of heating wire, promptly circuit power under the voltage that is operated in 220V and 120V is consistent.
Certainly this hair-dryer circuit also goes under other out-of-proportion voltages, insert the position of putting on the heating wire as long as change, and resistance that change to adjust resistance, what make circuit voltage square equals the square just passable with the ratio of heating wire of circuit voltage 220V with the ratio of the all-in resistance of parallel circuit.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as movable contact spring, stationary contact, heating wire, switch morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (2)
1. hair-dryer voltage conversion circuit, comprise power switch, motor and heating wire, voltage switch and heating wire are in series, the motor two ends are connected on the heating wire, it is characterized in that: also be provided with switch (1) and link to each other with heating wire (2), switch (1) is divided into front end resistance (21) and rear end resistance (22) with heating wire (2), front end resistance and rear end resistance are in parallel, and be in series with one on that resistance that resistance is little in front end resistance (21) and rear end resistance (22) and adjust resistance (3), the little resistance of this resistance with adjust the resistance that resistance after resistance is connected equals that big resistance of front end resistance (21) and the middle resistance of rear end resistance (22).
2. a kind of hair-dryer voltage conversion circuit according to claim 1, it is characterized in that described switch and heating wire (2) are in series, this switch (1) comprises 5 stationary contacts: stationary contact a, stationary contact b, stationary contact c, stationary contact d and stationary contact e, and two movable contact springs: movable contact spring f and movable contact spring g, stationary contact a links to each other with plug, stationary contact b is connected on the heating wire (2), heating wire is divided into front end resistance (21) and rear end resistance (22), stationary contact d is connected heating wire (2) front end after resistance (3) is connected with adjusting, stationary contact e is connected to heating wire (2) rear end, movable contact spring f is arranged on the stationary contact a, movable contact spring f links to each other with stationary contact b or stationary contact e, movable contact spring g is arranged on the stationary contact d, and movable contact spring f links to each other with stationary contact c or stationary contact e.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201298797U CN201681322U (en) | 2010-03-15 | 2010-03-15 | Voltage converting circuit of electric blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201298797U CN201681322U (en) | 2010-03-15 | 2010-03-15 | Voltage converting circuit of electric blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201681322U true CN201681322U (en) | 2010-12-22 |
Family
ID=43346359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201298797U Expired - Fee Related CN201681322U (en) | 2010-03-15 | 2010-03-15 | Voltage converting circuit of electric blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201681322U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807669A (en) * | 2016-05-04 | 2016-07-27 | 深圳市奋达科技股份有限公司 | Automatic voltage switching circuit and electric hair drier |
| WO2017190295A1 (en) * | 2016-05-04 | 2017-11-09 | 深圳市奋达科技股份有限公司 | Automatic voltage switching circuit and electric hair drier |
| CN117008520A (en) * | 2023-08-09 | 2023-11-07 | 深圳盈特创智能科技有限公司 | High-speed dryer control system of voltage self-adaptation |
-
2010
- 2010-03-15 CN CN2010201298797U patent/CN201681322U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807669A (en) * | 2016-05-04 | 2016-07-27 | 深圳市奋达科技股份有限公司 | Automatic voltage switching circuit and electric hair drier |
| WO2017190295A1 (en) * | 2016-05-04 | 2017-11-09 | 深圳市奋达科技股份有限公司 | Automatic voltage switching circuit and electric hair drier |
| CN105807669B (en) * | 2016-05-04 | 2018-12-18 | 深圳市奋达科技股份有限公司 | A kind of voltage automatic switch-over circuit and hair dryer |
| CN117008520A (en) * | 2023-08-09 | 2023-11-07 | 深圳盈特创智能科技有限公司 | High-speed dryer control system of voltage self-adaptation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG JIEBO ELECTRICAL APPLIANCE CO., LTD. Free format text: FORMER OWNER: NINGBO JIAJI ELECTRICAL APPLIANCE FACTORY Effective date: 20130529 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315324 NINGBO, ZHEJIANG PROVINCE TO: 315480 NINGBO, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130529 Address after: 315480 Zhejiang city of Ningbo province Yuyao City Lang Xia Jie Dao Lang Xia Cun Patentee after: Zhejiang Jiebo Electric Appliance Co., Ltd. Address before: 315324 Ningbo Cargill Electric Appliance Factory, 531 Xingye Road, Zhouxiang Town, Ningbo, Zhejiang, Cixi Patentee before: Ningbo Jiaji Electrical Appliance Factory |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20190315 |