H-bridge boost atomization circuit of hairdressing appliance

Abstract

The utility model provides an H-bridge boost atomization circuit of a hairdressing appliance, which comprises a power supply control circuit, an atomization circuit, a first control circuit and a second control circuit, and is characterized in that the power supply control circuit is used for driving the atomization circuit to work; the power supply control circuit comprises a main power supply, a first switch tube, a second switch tube, a third switch tube and a fourth switch tube, the atomization circuit comprises an atomization unit, and the two ends of the atomization unit are in bridge connection with the voltage transformation unit; the circuit adopts the first control unit and the second control unit to alternately control oscillation and then boost the isolation circuit, the design is simple, the cost is low, and when input signals are mistakenly triggered or mistakenly triggered, the circuit is self-locked by designing a resistor R11 and a resistor R12, so that abnormal short circuit of the power supply is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hairdressing electric appliance technical field, concretely relates to a hairdressing electric appliance H bridge boost atomization circuit. BACKGROUND

[0002] With the continuous development of hairdressing electric appliance technology, the application of atomization technology in hairdressing spray equipment is increasingly widespread, and the existing atomization circuit adopts power isolation technology, drives the atomization circuit through the inductance boost oscillation circuit of control end, thereby improving the atomization effect, however, this scheme has limitations, on the one hand, the cost of switch isolation power supply circuit is higher, and the isolation transformer is larger in size, which is not conducive to the miniaturization of equipment, on the other hand, this design usually needs to control multiple power supplies, which increases the complexity and space requirement of the circuit, and it is difficult to meet the requirements of modern hairdressing electric appliances for compact design. SUMMARY

[0003] (1) technical problem to be solved

[0004] The utility model provides a hairdressing electric appliance H bridge boost atomization circuit, aims at solving the problem of high cost of switch isolation power supply and complex design.

[0005] (2) technical scheme

[0006] The utility model provides a hairdressing electric appliance H bridge boost atomization circuit, including power control circuit, atomization circuit, first control circuit and second control circuit, the power control circuit is used for driving the atomization circuit works, the power control circuit includes main power supply, first switch tube, second switch tube, third switch tube and fourth switch tube, the both ends of main power supply are connected the source of first switch tube and second switch tube respectively, the drain of first switch tube and second switch tube is connected with the variable unit, the both ends of variable unit are connected the drain of third switch tube and fourth switch tube respectively, the source of third switch tube and fourth switch tube is connected with ground power supply, the atomization circuit includes atomization unit, the both ends of atomization unit are connected across variable unit,

[0007] The first control circuit is connected with the grid of first switch tube, third switch tube and fourth switch tube respectively, and the second control circuit is connected with the grid of second switch tube, fourth switch tube and third switch tube respectively.

[0008] Further, the first switch tube and the second switch tube are PMOS tubes, and the third switch tube and the fourth switch tube are NMOS tubes.

[0009] Further, the first control circuit comprises a triode, a triode and a control unit one, the collectors of the triode and the triode are connected with the gates of the first switch tube and the third switch tube respectively, and the control unit one is arranged between the bases of the triode and the triode.

[0010] Further, the triode and the triode are both NPN triodes.

[0011] Further, the control unit one is connected with the gate of the fourth switch tube through an R12 resistor.

[0012] Further, the second control circuit comprises a triode, a triode and a control unit two, the collectors of the triode and the triode are connected with the gates of the second switch tube and the fourth switch tube respectively, and the control unit two is arranged between the bases of the triode and the triode.

[0013] Further, the triode and the triode are both NPN triodes.

[0014] Further, the control unit two is connected with the gate of the third switch tube through an R11 resistor.

[0015] Further, the drain of the first switch tube is connected with the voltage conversion unit through a capacitor C1.

[0016] Further, the atomization unit comprises an atomization sheet, and the frequency of the atomization sheet is 175KHZ+ / -6HKZ.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] The circuit adopts the control unit one and the control unit two to alternately control oscillation, and the voltage conversion isolation circuit is simple in design and low in cost, when the input signal is wrong or mis-triggered, the circuit is self-locked through the resistance R11 and the resistance R12 to avoid abnormal short circuit of the power supply. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the flow chart of the utility model.

[0020] Figure 2 It is the principle block diagram of the utility model.

[0021] Figure 3 It is the time sequence chart of the utility model.

[0022] Figure 4 It is the effect picture of the utility model.

[0023] Figure 5 It is the installation schematic view of the utility model.

[0024] Reference signs: 1-power control circuit, 11-main power supply, 12-ground power supply, 13-first control circuit, 14-second control circuit, 2-atomization circuit, 21-atomization unit, 211-atomization sheet, 3-voltage conversion unit. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0026] As Figures 1-5 shown, the utility model provides a kind of hairdressing appliance H bridge boost atomization circuit, including power control circuit 1, atomization circuit 2, first control circuit 13 and second control circuit 14, the power control circuit 1 is used to drive the atomization circuit 2 work, the power control circuit 1 includes main power supply 11, first switch tube Q2, second switch tube Q1, third switch tube Q6 and fourth switch tube Q5, the source electrode G of the two ends of main power supply 11 is connected respectively first switch tube Q2 and second switch tube Q1, voltage conversion unit 3 is connected between the drain electrode D of first switch tube Q2 and second switch tube Q1, the drain electrode D of voltage conversion unit 3 is connected respectively third switch tube Q6 and fourth switch tube Q5, ground power supply 12 is connected between the source electrode G of third switch tube Q6 and fourth switch tube Q5;The atomization circuit 2 includes atomization unit 21, and the two ends of atomization unit 21 are connected across voltage conversion unit 3;First control circuit 13 is communicated with the gate electrode G of first switch tube Q2, third switch tube Q6 and fourth switch tube Q5 respectively;Second control circuit 14 is communicated with the gate electrode G of second switch tube Q1, fourth switch tube Q5 and third switch tube Q6 respectively.

[0027] Specifically, the first switch tube Q2 and second switch tube Q1 are PMOS tubes, the third switch tube Q6 and fourth switch tube Q5 are NMOS tubes, when the gate electrode G of PMOS tube is connected to high level, the PMOS tube is cut off, when the gate electrode G of PMOS tube is connected to low level, the PMOS tube is turned on, when the gate electrode G of NMOS tube is connected to high level, the NMOS tube is turned on, when the gate electrode G of NMOS tube is connected to low level, the NMOS tube is cut off.

[0028] Further, the first control circuit 13 includes transistor Q3, transistor Q8 and control unit one ML, the collector of transistor Q3 and transistor Q8 is connected with the gate electrode G of first switch tube Q2, third switch tube Q6 respectively, the control unit one ML is arranged between the base of transistor Q3 and the base of transistor Q8, the emitter stage of transistor Q3 and the emitter stage of transistor Q8 are grounded.

[0029] Specifically, the triode Q3 and the triode Q8 are NPN triodes, when the base of the NPN triode inputs low level, the NPN triode is cut off, and the output end is high level; when the base of the NPN triode inputs high level, the NPN triode is turned on, and the output end is low level.

[0030] Further, the control unit one ML and the gate G of the fourth switch tube Q5 are connected with the R12 resistor.

[0031] Specifically, the second control circuit 14 includes the triode Q4, the triode Q7 and the control unit two MR, the collector of the triode Q4 and the triode Q7 are connected with the gate G of the second switch tube Q1 and the fourth switch tube Q5 respectively, and the control unit two MR is arranged between the base of the triode Q4 and the triode Q7.

[0032] Further, the triode Q4 and the triode Q7 are NPN triodes.

[0033] Further, the control unit two MR and the gate G of the third switch tube Q6 are connected with the R11 resistor.

[0034] When the product is in standby state, the atomization circuit 2 has no voltage, the control unit one ML and / or the control unit two MR have no level signal, the triode Q3, the triode Q4, the triode Q7 and the triode Q8 are in the closed state, the gate G of the second switch tube Q1 and the first switch tube Q2 is pulled high by default and closed, the gate G of the fourth switch tube Q5 and the third switch tube Q6 is pulled low by default and closed, and the whole power supply control circuit has no loop and works.

[0035] When the control unit one ML sends high level and the control unit two MR sends low level from the t0-t1 period:

[0036] The triode Q3 and triode Q8 are NPN triodes, the base input of the triode Q3 and triode Q8 is high level, the triode Q3 and triode Q8 are off, the output end is low level, that is, the collector output of the triode Q3 and the triode Q8 is low level, the collector of the triode Q3 is connected with the gate G of the first switch tube Q2, that is, the gate G of the first switch tube Q2 inputs low level, since the first switch tube Q2 is PMOS tube, when input low level, the first switch tube Q2 is turned on, the collector of the triode Q8 is connected with the gate G of the third switch tube Q6 and inputs low level, since the third switch tube Q6 is NMOS tube, when input low level, the third switch tube Q6 is off; when the control unit two MR sends low level, the base input of the triode Q7 and triode Q4 is low level, since the triode Q7 and triode Q4 are NPN triodes, the collector output of the triode Q7 and triode Q4 is high level, the gate G of the second switch tube Q1 is connected with the collector of the triode Q4 and inputs high level, since the second switch tube Q1 is PMOS tube, when input high level, it is off, the gate G of the fourth switch tube Q5 is connected with the collector of the triode Q7 and inputs high level, since the fourth switch tube Q5 is NMOS tube, when input high level, it is turned on, at this time, the current flows from the main power supply 11, through the first switch tube Q2 to the voltage conversion unit 3, then to the fourth switch tube Q5 and finally to the ground power supply 12.

[0037] At this time, the power supply control circuit 1 forms a loop and starts to work, and there is current passing through the voltage conversion unit 3. The drain of the first switch tube Q2 is connected with the voltage conversion unit 3 through the capacitor C1. Through the capacitor C1, the current passing through the voltage conversion unit 3 is converted into magnetic energy storage. When the current forms a loop while flowing through the voltage conversion unit 3, at this time, the voltage conversion unit 3 will produce electromagnetic induction, generate a magnetic field, and the magnetic flux passing through the loop will change accordingly, resulting in a potential difference at the output end. Due to electromagnetic induction, the magnetic flux of the voltage conversion unit 3 changes to generate current. At this time, the two ends of the atomization unit 21 are connected across the voltage conversion power supply 3. In this way, the electric field and the magnetic field can be converted into each other continuously, forming an oscillating current, generating vibration, the voltage conversion unit 3 supplies power to the atomization unit 21 to drive the atomization unit 21 to work.

[0038] From the t1-t2 time period, the control unit one ML sends low level, and the control unit two MR sends high level:

[0039] The base input of the triode Q3 and the triode Q8 is low level, the triode Q3 and the triode Q8 are NPN triodes, therefore the collector output of the triode Q3 and the triode Q8 is high level, the gate G of the first switch tube Q2 receives high level, since the first switch tube Q2 is PMOS tube, the gate G of the first switch tube Q2 receives high level and is cut off, the third switch tube Q6 is NMOS tube, the gate G of the third switch tube Q6 receives high level and is turned on; the base input of the triode Q7 and the triode Q4 is high level, the triode Q7 and the triode Q4 are NPN triodes, therefore the collector output of the triode Q4 and the triode Q7 is low level, the gate G of the second switch tube Q1 receives low level of the triode Q4, since the second switch tube Q1 is PMOS tube, the input low level is turned on, that is, the second switch tube Q1 is turned on, since the fourth switch tube Q5 is NMOS tube, the input low level is cut off, that is, the fourth switch tube Q5 is cut off, at this time, the first switch tube Q2 and the fourth switch tube Q5 are cut off, the second switch tube Q1 and the third switch tube Q6 are turned on, the current flows from the main power supply 11 to the second switch tube Q1, through the voltage transformation unit 3 to the third switch tube Q6, and finally to the ground power supply 12.

[0040] At this time, the power supply control circuit 1 forms a loop and starts to work, there is current passing through the voltage transformation unit 3 to generate a magnetic field, due to the change of magnetic flux, the voltage transformation unit 3 generates current to supply the atomization unit 21 connected at both ends of the voltage transformation unit 3 to work, and further drive the atomization unit 21 to work, as shown in Figure 4 and Figure 5 .

[0041] When the control unit one ML and the control unit two MR both output high level:

[0042] The collector of the triode Q3, the triode Q8, the triode Q4 and the triode Q7 outputs low level, the first switch tube Q2 and the second switch tube Q1 receive low level and are turned on, the third switch tube Q6 and the fourth switch tube Q5 receive low level and are cut off, at this time, the voltage flows out from the main power supply 11, flows through the first switch tube Q2 and the second switch tube Q1, and then flows back to the main power supply 11, the voltage does not change, at this time, no current is generated, at this time, the voltage transformation unit 3 does not change and does not work, and cannot drive the atomization unit 21 to work.

[0043] Meanwhile, the gate G of the fourth switch tube Q5 is connected with the control unit one ML, but the gate G of the fourth switch tube Q5 is connected with the control unit two MR through the resistor R12 and the resistor R11, the resistor R12 and the resistor R11 limit the current, the gate G of the fourth switch tube Q5 is connected with the collector of the triode Q7, when the control unit two MR inputs high level, the triode Q7 outputs low level, the voltage of the fourth switch tube Q5 is reduced at a higher speed than the speed of rising, when the control unit one ML inputs high level, the triode Q8 inputs high level and outputs low level, the gate G of the third switch tube Q6 inputs low level, at this time, the voltage rises at a lower speed than the speed of reducing from the control unit two MR, so that the short circuit condition is avoided when the control unit one ML and the control unit two MR both output high level, at this time, the first control circuit 13 and the second control circuit 14 prevent the third switch tube Q6 and the fourth switch tube Q5 from being triggered by the signal of the first control circuit 13 and the second control circuit 14, and the main power supply 11 is abnormally short-circuited.

[0044] When the control unit one ML and the control unit two MR both output low level:

[0045] The bases of the triode Q3, the triode Q8, the triode Q4 and the triode Q7 input low level, and the collectors output high level, at this time, the first switch tube Q2 and the second switch tube Q1 receive high level and are cut off, the third switch tube Q6 and the fourth switch tube Q5 receive high level and are turned on, at this time, the power supply control circuit 1 does not form a loop, the power supply control circuit 1 does not work, and therefore the atomization circuit 2 does not work.

[0046] The power supply of the atomization unit 21 is realized by controlling the control unit one ML and the control unit two MR to alternately output high level and low level, the atomization unit 21 is driven to work, and the power supply of the atomization circuit 2 is realized by only isolating the atomization circuit 2 from the variable power supply unit 3, the power supply of the atomization unit 21 is realized by only isolating the power supply control circuit 1 from the atomization circuit 2, the design is simple and the cost is low, and the creepage distance of the circuit design is simplified.

[0047] Specifically, the atomization unit 21 comprises an atomization sheet 211, the atomization unit 21 is driven to work to spray the atomization sheet 211, and the frequency of the atomization sheet 21 in the embodiment is 175KHZ+ / -6HKZ.

[0048] The working principle of the utility model is described in detail as follows.

[0049] The power control circuit 1 is controlled by the control unit one ML and the control unit two MR to form a loop, starts to work, current passes through the transformation unit 3, generates a magnetic field, due to the change of magnetic flux, the transformation unit 3 generates current, supplies the atomization unit 21 connected to the both ends of the transformation unit 3 to work, and further drives the atomization unit 21 to work.

[0050] The utility model discloses an innovation point in this circuit adopts control unit one ML and control unit two MR alternate control oscillation, and then boost isolation circuit, and the design is simple and low in cost, when input signal has error or error trigger, through the design resistance R11 and resistance R12 make the circuit self-locking avoid power supply abnormal short circuit.

[0051] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and the skilled person should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other implementations that can be understood by the skilled person.

[0052] It is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A hair styling appliance H-bridge boost atomizing circuit, comprising: The power supply control circuit (1), atomization circuit (2), first control circuit (13) and second control circuit (14), the power supply control circuit (1) is used for driving the atomization circuit (2) to work, the power supply control circuit (1) includes main power supply (11), first switch tube (Q2), second switch tube (Q1), third switch tube (Q6) and fourth switch tube (Q5), the source (S) of the first switch tube (Q2) and the second switch tube (Q1) is connected respectively at both ends of the main power supply (11), the drain (D) between the first switch tube (Q2) and the second switch tube (Q1) is connected with the voltage conversion unit (3), the drain (D) of the voltage conversion unit (3) is connected respectively at both ends of the third switch tube (Q6) and the fourth switch tube (Q5), the source (S) between the third switch tube (Q6) and the fourth switch tube (Q5) is connected with the ground power supply (12);The atomization circuit (2) includes atomization unit (21), and the atomization unit (21) is connected across the voltage conversion unit (3); The first control circuit (13) is communicated with the gate (G) of the first switch tube (Q2), third switch tube (Q6) and fourth switch tube (Q5) respectively;The second control circuit (14) is communicated with the gate (G) of the second switch tube (Q1), fourth switch tube (Q5) and third switch tube (Q6) respectively.

2. The hair styling appliance H-bridge boost atomizing circuit of claim 1, wherein, The first switch tube (Q2) and the second switch tube (Q1) are PMOS tubes, and the third switch tube (Q6) and the fourth switch tube (Q5) are NMOS tubes.

3. The hair styling appliance H-bridge boost atomizing circuit of claim 2, wherein, The first control circuit (13) includes a transistor (Q3), a transistor (Q8) and a control unit (ML), the collector of the transistor (Q3) and the transistor (Q8) is connected with the gate (G) of the first switch tube (Q2) and the third switch tube (Q6) respectively, and the control unit (ML) is arranged between the base of the transistor (Q3) and the base of the transistor (Q8).

4. The hair styling appliance H-bridge boost atomizing circuit of claim 3, wherein, The transistor (Q3) and the transistor (Q8) are both NPN transistors.

5. The hair styling appliance H-bridge boost atomizing circuit of claim 3, wherein, The R12 resistor is connected between the control unit (ML) and the gate (G) of the fourth switch tube (Q5).

6. The hair appliance H-bridge boost atomizing circuit of claim 1, wherein, The second control circuit (14) includes a transistor (Q4), a transistor (Q7) and a control unit (MR), the collector of the transistor (Q4) and the transistor (Q7) is connected with the gate (G) of the second switch tube (Q1) and the fourth switch tube (Q5) respectively, and the control unit (MR) is arranged between the base of the transistor (Q4) and the base of the transistor (Q7).

7. The hair appliance H-bridge boost atomizing circuit of claim 6, wherein, The transistor (Q4) and the transistor (Q7) are both NPN transistors.

8. The hair appliance H-bridge boost atomizing circuit of claim 6, wherein, The R11 resistor is connected between the control unit (MR) and the gate (G) of the third switch tube (Q6).

9. The hair appliance H-bridge boost atomizing circuit of claim 1, wherein, The drain of the first switch tube (Q2) is connected with the voltage conversion unit (3) with a capacitor C1.

10. The hair appliance H-bridge boost atomizing circuit of claim 1, wherein, The atomization unit (21) includes an atomization sheet (211), and the frequency of the atomization sheet (211) is 175KHZ+ / -6HKZ.

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