CN115356966A - Hair drier, control circuit thereof and blowing device - Google Patents
Hair drier, control circuit thereof and blowing device Download PDFInfo
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- CN115356966A CN115356966A CN202211048535.7A CN202211048535A CN115356966A CN 115356966 A CN115356966 A CN 115356966A CN 202211048535 A CN202211048535 A CN 202211048535A CN 115356966 A CN115356966 A CN 115356966A
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- 238000007664 blowing Methods 0.000 title claims abstract description 51
- 230000006698 induction Effects 0.000 claims abstract description 57
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 230000003068 static effect Effects 0.000 claims description 25
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000001939 inductive effect Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 abstract description 10
- 230000007547 defect Effects 0.000 abstract description 5
- 238000001035 drying Methods 0.000 description 20
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D20/00—Hair drying devices; Accessories therefor
- A45D20/04—Hot-air producers
- A45D20/08—Hot-air producers heated electrically
- A45D20/10—Hand-held drying devices, e.g. air douches
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D20/00—Hair drying devices; Accessories therefor
- A45D20/04—Hot-air producers
- A45D20/08—Hot-air producers heated electrically
- A45D20/10—Hand-held drying devices, e.g. air douches
- A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
Abstract
The invention discloses a hair drier, a control circuit thereof and a hair drier, wherein the control circuit comprises a hair drier circuit connected with a hair drier motor, a heating circuit connected with a heating wire, a first power supply circuit, a first induction control module and a second power supply circuit, the first induction control module comprises a first induction part, a first switch device and a normally-open first relay, the output of the first induction part is connected to the input of the first switch device, the first switch device and a coil of the first relay are connected in series on the second power supply circuit, and the first switch device controls whether the coil of the first relay is electrified or not according to the output signal of the first induction part; one end of the blowing circuit and one end of the heating circuit are respectively connected with one end of the first power supply circuit, and the other end of the blowing circuit and the other end of the heating circuit are respectively connected with the other end of the first power supply circuit through a contact group of the first relay. The invention realizes a non-contact signal transmission mode and solves the defects in the prior art.
Description
Technical Field
The invention relates to the technical field of blowing, in particular to a blower, a control circuit of the blower and a blowing device of the blower.
Background
At present, a multifunctional hair dryer on the market is increasingly favored by consumers, which not only can be used as a hair dryer, but also can realize a hand drying function and the like. The above-described multifunctional hair dryer generally includes a hair dryer and a base, and the hair dryer can be used alone for hair drying or the like when the hair dryer is removed from the base, and can be used for hand drying or the like when the hair dryer is placed in the base. In order to realize the automatic hand drying function, the blower and the base need to realize signal transmission, and the base informs the blower to work through signals, so that the hand drying function is realized. However, the hair dryer and the base in the prior art usually adopt a contact type signal transmission mode to realize signal transmission, and the signal transmission mode adopting the contact type signal transmission mode has the following defects: the waterproof paint has great defects on water prevention, and if water splash or fog occurs, a circuit is easy to be short-circuited; the metal contact is easy to rust due to high humidity in a bathroom environment, so that the conduction function is influenced; the contact is designed to be convex, and the drawing or placing must be strictly according to the requirements of structure mixing, and can not have a little deviation, and the interactivity is poor. .
Disclosure of Invention
The invention provides a hair drier, a control circuit thereof and a blowing device, aiming at the technical problems in the prior art, wherein the signal transmission between the hair drier and a base is realized by combining an induction mode and a pure hardware circuit.
The technical scheme adopted by the invention for solving the technical problems is as follows: a hair drier control circuit comprises a blowing circuit at least connected with a blowing motor, a heating circuit at least connected with a heating wire, a first power circuit, a first induction control module and a second power circuit, wherein the first induction control module comprises a first induction part, a first switching device and a normally-open first relay, the first induction part is used for inducing a first induced part arranged on a base for placing a hair drier, the output of the first induction part is connected to the input of the first switching device, and the first switching device and a coil of the first relay are connected in series on the second power circuit, so that the first switching device controls whether the coil of the first relay is powered on or not according to an output signal of the first induction part; one end of the blowing circuit and one end of the heating circuit are respectively connected with one end of the first power supply circuit, and the other end of the blowing circuit and the other end of the heating circuit are respectively connected with the other end of the first power supply circuit through a contact group of the first relay.
The heating device further comprises a first operating switch and a second operating switch, wherein the second operating switch is connected with the heating wire in series to form a series circuit, the series circuit is connected with the blowing circuit in parallel to form a parallel module, and the parallel module and the first operating switch are connected on the first power supply circuit in series.
The second induction control module comprises a second induction component, a second switch device and a normally-closed second relay, wherein the second induction component is used for inducing a second induced component arranged on the base, the output of the second induction component is connected to the input of the second switch device, and the second switch device and a coil of the second relay are connected in series on the second power supply circuit, so that the second switch device controls whether the coil of the second relay is powered on or not according to an output signal of the second induction component; the second relay comprises two groups of contacts, wherein one group of contacts is connected with the parallel module and the first operating switch in series on the first power circuit, and the other group of contacts is connected on the series circuit.
Further, the first operating switch is a single-pole three-throw switch, a first static contact end of the first operating switch is suspended, a second static contact end and a third static contact end are connected together, and the second static contact end is connected with a diode D1 in series; the second operating switch is a single-pole double-throw switch, a first static contact end and a second static contact end of the second operating switch are connected together, and the first static contact end of the second operating switch is connected with a diode D2.
Further, the contact set comprises two sets of contacts, wherein one set of contacts is connected between the other end of the first power supply circuit and the other end of the blowing circuit, and the other set of contacts is connected between the other end of the first power supply circuit and the other end of the heating circuit.
Furthermore, two ends of the first power supply circuit are respectively used for connecting with a mains supply, the second power supply circuit is an AC-DC conversion circuit, and two input ends of the second power supply circuit are respectively connected with two ends of the first power supply circuit; the wind blowing circuit is also connected with a rectifier bridge and a current-limiting inductor; and the heating circuit is also connected with a diode D3.
Further, the first sensing component is a hall sensor U1, an input end of the hall sensor U1 is connected to a positive output end of the second power supply circuit, a resistor R2 is connected between the input end and the output end of the hall sensor U1, a capacitor C1 is connected between a ground end and an output end of the hall sensor U1, a resistor R3 is connected between the output end of the hall sensor U1 and an input end of the first switching device, and a resistor R1 is connected between the input end of the first switching device and the positive output end of the second power supply circuit; a diode D5 is connected between two ends of the coil of the first relay; the first switching device is an MOS tube or a transistor.
Further, the second sensing component is a hall sensor U2, an input end of the hall sensor U2 is connected to a positive output end of the second power supply circuit, a resistor R5 is connected between the input end and the output end of the hall sensor U2, a capacitor C2 is connected between the ground end and the output end of the hall sensor U2, a resistor R4 is connected between the output end of the hall sensor U2 and an input end of the second switching device, and a resistor R1 is connected between the input end of the second switching device and the positive output end of the second power supply circuit; a diode D4 is connected between two ends of the coil of the first relay; the second switching device is an MOS tube or a transistor.
The invention also provides a blower, which comprises a blower shell and the blower control circuit, wherein the blower control circuit is arranged on the blower shell.
The invention also provides a blowing device, which comprises a blower and a base capable of placing the blower, wherein the base is provided with a first sensed part, the blower comprises the blower control circuit, the first sensed part is used for sensing the first sensed part, and when the first sensed part is sensed by the first sensing part, the first sensing part outputs a signal to enable the first switching device to be in a conducting state.
Further, the machine base is further provided with a human body part sensor and a controller, the output of the human body part sensor is connected to the controller, and the controller controls the first sensed part to enter a sensed working state or a non-sensed dormant state according to a signal transmitted by the human body part sensor.
Further, the first sensing component is a hall sensor U1, the first sensed component is an electromagnet, and the electromagnet is electrically connected with the controller; the human body part sensor is an infrared sensor.
Further, the hair dryer control circuit further comprises a first operating switch and a second operating switch, the second operating switch is connected with the heating wire in series to form a series circuit, the series circuit is connected with the hair drying circuit in parallel to form a parallel module, and the parallel module and the first operating switch are connected with the first power supply circuit in series;
the hair drier control circuit also comprises a second induction control module, wherein the second induction control module comprises a second induction part, a second switching device and a normally-closed second relay, the output of the second induction part is connected to the input of the second switching device, and the second switching device and a coil of the second relay are connected in series on the second power supply circuit, so that the second switching device controls whether the coil of the second relay is powered on or not according to an output signal of the second induction part; the second relay comprises two groups of contacts, wherein one group of contacts is connected with the parallel module and the first operating switch in series on the first power circuit, and the other group of contacts is connected with the series circuit;
the base is further provided with a second inducted part, the second inducted part is used for inducting the second inducted part, and when the second inducted part inducts the second inducted part, the second inducted part outputs a signal to enable the second switch device to be in a conducting state.
Further, the second sensing component is a hall sensor U2, and the second sensed component is a permanent magnet.
Compared with the prior art, the invention has the following beneficial effects:
1. the hair drier control circuit also comprises the first sensing module and the second power circuit, so that the hair drier and the base realize signal transmission in a sensing mode, a non-contact signal transmission mode is realized, and the defects existing in the prior art that the hair drier and the base adopt a contact signal transmission mode are overcome. In addition, the first induction control module further comprises the first switch device and a normally-open first relay, so that the first induction control module is designed by a pure hardware circuit, and compared with an MCU chip, the first induction control module is lower in cost and better in working stability.
2. The second induction control module can automatically cut off the function adjustment of the first operation switch and the second operation switch when the hair dryer is placed on the base, and safety accidents caused by the fact that the hair dryer is mistakenly placed in a non-manual working state when the hair dryer is placed on the base are avoided. The second induction control module is also designed by adopting a pure hardware circuit, so that the cost is low and the working stability is good.
3. The base is also provided with a human body part sensor and a controller, and the controller controls the first sensed part to enter a sensed working state or a non-sensed dormant state according to a signal transmitted by the human body part sensor, so that the hair dryer can be placed on the base for a long time, the hair dryer enters a hand drying working state only when the human body part sensor senses hands of a person, and the human body part sensor can be in a relatively stable environment for a long time and cannot be damaged along with the shaking of the hair dryer. In addition, because the human body part inductor is arranged on the base, the induction range of the human body part inductor is not influenced by the distance between the air blowing port of the hair drier and the hands, so that the problems that the hands are easily scalded and are not beneficial to quickly drying the hands because the hands are required to be closer to the air blowing port of the hair drier during hand drying are easily avoided.
The invention is further explained in detail with the accompanying drawings and the embodiments; however, a hair dryer and a control circuit and a blowing device thereof of the present invention are not limited to the embodiments.
Drawings
Figure 1 is a schematic diagram of the construction of the control circuit of a hair dryer of the present invention;
figure 2 is a schematic diagram of the control circuit of the hair dryer of the present invention in a hand drying mode;
fig. 3 is a schematic circuit diagram of the hair dryer control circuit of the present invention in a hair drying mode;
fig. 4 is a schematic structural view of the blower device of the present invention;
fig. 5 is an electrical schematic of the circuit portion in the base of the present invention.
Detailed Description
Referring to fig. 1 to 3, a hair dryer control circuit of the present invention includes a blowing circuit 1 at least connected to a blowing motor M1, a heating circuit 2 at least connected to a heating wire EH1, a first power circuit 3, a first sensing control module 4 and a second power circuit 5, wherein the first sensing control module 4 includes a first sensing part; the first induction control module 4 further comprises a first switching device Q1 and a normally-open first relay J1, wherein the output of the first induction component is connected to the input of the first switching device Q1, and the first switching device Q1 and a coil of the first relay J1 are connected in series on the second power circuit 5, so that the first switching device Q1 controls whether the coil of the first relay J1 is powered on or not according to the output signal of the first induction component; one end of the blowing circuit 1 and one end of the heating circuit 2 are respectively connected with one end of the first power supply circuit 3, and the other end of the blowing circuit 1 and the other end of the heating circuit 2 are respectively connected with the other end of the first power supply circuit 3 through a contact set of the first relay J1. Specifically, the contact set of the first relay J1 includes two sets of contacts, one of which is connected between the other end of the first power supply circuit 3 and the other end of the blower circuit 1, and the other of which is connected between the other end of the first power supply circuit 3 and the other end of the heating circuit 2. In other embodiments, the contact set of the first relay J1 includes only a single set of contacts, one end of which is connected to the other end of the first power circuit 3, and the other end of which is connected to both the other end of the blower circuit 1 and the other end of the heater circuit 2. The first induction component is used for inducing a first induced component arranged on a base 9, and the base 9 is used for placing a blower where the blower control circuit is located.
In this embodiment, two ends of the first power circuit 3 are respectively used for connecting a commercial power, the second power circuit 5 is an AC-DC conversion circuit, two input ends of the second power circuit are respectively connected to two ends of the first power circuit 3, and when the two ends of the first power circuit 3 are respectively connected to the commercial power, the second power circuit 5 converts the 220V commercial power into a 5V direct current and supplies the 5V direct current to the first induction control module 4 and the second induction control module 6. In this embodiment, the blowing circuit 1 is further connected with a rectifier bridge BD1 and a current-limiting inductor EH2, the current-limiting inductor EH2 is used for the blowing motor M1 to play a role in resisting surge and limiting current, and the rectifier bridge BD1 enables both positive half-waves and negative half-waves of alternating current to pass through, so that the working efficiency of the blowing motor M1 is improved. And the heating circuit 2 is also connected with a diode D3.
In this embodiment, the present invention further includes a first operating switch K1 and a second operating switch K2, the second operating switch K2 is connected in series with the heating wire EH1 to form a series circuit, the series circuit is connected in parallel with the blowing circuit 1 to form a parallel module, and the parallel module is connected in series with the first operating switch K1 to the first power circuit 3. Specifically, the first operating switch K1 is a single-pole three-throw switch, a first static contact end of the first operating switch K1 is suspended, a second static contact end and a third static contact end are connected together, and the second static contact end is connected with the diode D1 in series. Therefore, when the moving contact of the first operating switch K1 is closed with the first static contact, the circuit where the first operating switch K1 is located is disconnected, and the blower is switched to a closing gear; when the moving contact of the first operating switch K1 is closed with the second static contact end, the diode D1 only allows positive half-waves of alternating current to pass through, so that the hair drier is switched to a low wind volume gear; when the moving contact of the first operating switch K1 and the third stationary contact are closed, the blower motor M1 is switched to a high-air-volume gear. The second operating switch K2 is a single-pole double-throw switch, a first static contact end and a second static contact end of the second operating switch are connected together, and the first static contact end of the second operating switch is connected with a diode D2. The second operating switch K2 is used for controlling the switching between warm air and hot air, when the moving contact of the second operating switch K2 is closed with the first static contact end, the hair drier is switched to a warm air gear, and when the moving contact of the second operating switch K2 is closed with the second static contact end, the hair drier is switched to a hot air gear.
In this embodiment, the present invention further includes a second sensing control module 6, where the second sensing control module 6 includes a second sensing component, a second switching device Q2, and a normally-closed second relay J2, an output of the second sensing component is connected to an input of the second switching device Q2, and coils of the second switching device Q2 and the second relay J2 are connected in series to the second power circuit 5, so that the second switching device Q2 controls whether a coil of the second relay J2 is powered according to an output signal of the second sensing component; the second relay J2 includes two sets of contacts, one of which is connected in series with the parallel module and the first operation switch K1 on the first power supply circuit 3, and the other of which is connected on the series circuit. The second sensing component is used for sensing a second sensed component arranged on the base 9.
In this embodiment, the first sensing component is a hall sensor U1, an input end of the hall sensor U1 is connected to a positive output end of the second power circuit 5, a resistor R2 is connected between the input end and the output end of the hall sensor U1, a capacitor C1 is connected between a ground end and an output end of the hall sensor U1, a resistor R3 is connected between the output end of the hall sensor U1 and an input end of the first switching device Q1, and a resistor R1 is connected between the input end of the first switching device Q1 and the positive output end of the second power circuit 5; a diode D5 is connected between two ends of the coil of the first relay J1; the first switching device Q1 is a MOS transistor or a transistor.
In this embodiment, the second sensing component is a hall sensor U2, an input end of the hall sensor U2 is connected to a positive output end of the second power circuit 5, a resistor R5 is connected between an input end and an output end of the hall sensor U2, a capacitor C2 is connected between a ground end and an output end of the hall sensor U2, a resistor R4 is connected between an output end of the hall sensor U2 and an input end of the second switching device Q2, and a resistor R1 is connected between an input end of the second switching device Q2 and a positive output end of the second power circuit 5; a diode D4 is connected between two ends of the coil of the first relay J1; the second switching device Q2 is a MOS transistor or a transistor.
In this embodiment, a human body sensing component and a controller 12 are further disposed on the base 9, an output of the human body portion sensor is connected to the controller 12, and the controller 12 controls the first sensed component to enter a working state in which sensing can be performed or a sleep state in which sensing cannot be performed according to a signal transmitted by the human body portion sensor, as shown in fig. 5. The first part to be induced is an electromagnet 10, the second part to be induced is a permanent magnet 11, and the human body part sensor is an infrared sensor 13.
The hair drier comprises a hair drier shell 8 and a hair drier control circuit, wherein the hair drier control circuit is arranged on the hair drier shell 8. The blower housing 8 specifically includes a head and a handle, the blower motor M1 and the heating wire EH1 are disposed on the head, the first sensing component (i.e., the hall sensor U1) and the second sensing component (i.e., the hall sensor U2) are disposed on a portion of the handle close to the base 9, and the rest of the blower control circuit is integrated on a circuit board 7 and disposed on the handle, as shown in fig. 4.
The working principle of the hair dryer and its control circuit of the present invention is described below in conjunction with the base 9:
the utility model discloses a two-phase current-limiting electric hair dryer, including first power supply circuit 3, the hair-dryer is placed in frame 9, and infrared sensor 13 is not when sensing the signal, controller 12 on the frame 9 is not activated electro-magnet 10, and hall sensor U1 can not respond to the magnetic field of electro-magnet 10, and hall sensor U2 then senses the magnetic field with permanent magnet 11, therefore hall sensor U2 outputs the high level, and second switching device Q2 switches on, and second relay J2's coil is electrified, and two sets of contacts of second relay J2 switch to normally open state respectively to make the series circuit at first operating switch K1 place and second operating switch K2 place break off respectively. Therefore, when the hair dryer enters the hand drying mode, the first operation switch K1 and the second operation switch K2 are manually operated, and the hair dryer and the adjusting function cannot be switched on or off.
The utility model discloses a heating device, including first power supply circuit 3, infrared sensor 13, controller 12, and controller 12, the both ends of first power supply circuit 3 are inserted the commercial power respectively, and the hair-dryer is placed in frame 9, and when infrared sensor 13 sensed the signal (promptly the response scope that staff or other parts of health got into infrared sensor 13), infrared sensor 13 transmission signal gave controller 12, controller 12 activation electromagnet 10 (make electromagnet 10 circular telegram and produce magnetic field), and hall sensor U1 senses the magnetic field of electromagnet 10 to output high level, make first switching device Q1 switch on, therefore, first relay J1's coil is electrified, and two sets of contacts of first relay J1 switch to the normally closed state respectively, thereby make heating circuit 2 and blowing circuit 1 switch on respectively, heater strip EH1 and blowing motor M1 get into operating condition respectively, the mouth that blows that the frame 9 bottoms set up exports warm braw, so that the staff is dried. At this time, an equivalent circuit of the blower control circuit of the present invention is shown in fig. 2.
When the hair dryer leaves the base 9, or when the human hand leaves the induction range of the infrared sensor 13, the hall sensor U1 cannot induce the magnetic field of the electromagnet 10, and outputs a low level to cut off the first switching device Q1, so that the coil of the first relay J1 is de-energized, and the two sets of contacts of the first relay J1 are respectively switched to a normally open state, so that the heating circuit 2 and the blowing circuit 1 are respectively disconnected, and the heating wire EH1 and the blowing motor M1 are respectively stopped working. When the blower leaves the base 9, the hall sensor U2 does not sense the magnetic field of the permanent magnet 11, and outputs a low level, so that the second switching device Q2 is turned off, and therefore, the coil of the second relay J2 is de-energized, and the two sets of contacts of the second relay J2 are respectively switched to a normally closed state, so that the circuit where the first operating switch K1 is located and the series circuit where the second operating switch K2 is located are respectively turned on. Thus, the hair dryer enters a hair drying mode, and the hair dryer and the adjusting function can be switched on and off by manually operating the first operation switch K1 and the second operation switch K2. At this time, an equivalent circuit of the blower control circuit of the present invention is shown in fig. 3.
According to the hair drier and the control circuit thereof, the first sensing part/the second sensing part are in a non-contact type design, so that the defects of the traditional contact type hair drying and hand drying integrated machine are overcome. Particularly, the first induction part/the second induction part adopts a magnetic field induction mode, the induction range is wide, accurate clamping is not needed, and the structural problem that the traditional contact type hair drying and hand drying integrated machine can work only by accurately positioning the contact is solved. In addition, the first induction control module 4 and the second induction control module 6 are designed by pure hardware circuits respectively, and compared with an MCU chip, the cost is lower, and the working stability is better. Particularly, the second sensing control module 6 can automatically cut off the function adjustment of the first operating switch K1 and the second operating switch K2 when the hair dryer is placed on the base 9, so that safety accidents caused by the fact that the hair dryer is mistakenly placed on the base 9 and enters a working state without manual use are avoided.
Referring to fig. 1-5, a blowing apparatus of the present invention includes a blower and a base 9 for placing the blower, the base 9 is provided with a first sensed component, the blower includes a blower control circuit according to the present invention, the first sensed component is used for sensing the first sensed component, and when the first sensed component senses the first sensed component, the first sensed component outputs a signal to make the first switching device Q1 in a conducting state.
In this embodiment, the base 9 is further provided with a human body part sensor and a controller 12, an output of the human body part sensor is connected to the controller 12, and the controller 12 controls the first sensed component to enter a sensed working state or a non-sensed sleep state according to a signal transmitted by the human body part sensor. The first sensing component is a Hall sensor U1, the first sensed component is an electromagnet 10, and the electromagnet 10 is electrically connected with the controller 12; the human body part sensor is an infrared sensor 13.
In this embodiment, the base 9 is further provided with a second sensed component, the second sensed component is used for sensing the second sensed component, and when the second sensed component senses the second sensed component, the second sensed component outputs a signal to enable the second switching device Q2 to be in a conducting state. The second sensing component is a Hall sensor U2, and the second sensed component is a permanent magnet 11.
In this embodiment, an air guiding channel that is through from top to bottom is arranged in the base 9, an opening at the lower end of the air guiding channel forms a blowing port of the base 9, and when the hair dryer is placed on the base, an air outlet of the hair dryer is communicated with the upper end of the air guiding channel. The air guide channel is approximately in a horn shape with a narrow top and a wide bottom. The infrared sensor 13 is arranged at the position, close to the air blowing opening, of the bottom of the machine base 9.
For the structure of the hair dryer and the control circuit thereof, please refer to the above description, and the details are not repeated herein.
The working principle of the blowing device is as described above, and the details are not repeated here.
According to the blowing device, the base 9 is further provided with the human body part sensor (namely, the infrared sensor 13) and the controller 12, so that the blowing device can be used for placing the blower on the base 9 for a long time, the blower is in a hand drying working state only when the human body part sensor (namely, the infrared sensor 13) senses hands of a person, and the human body part sensor can be in a relatively stable environment for a long time and cannot be damaged along with shaking of the blower. In addition, because the human body part sensor is arranged on the base 9, the sensing range of the human body part sensor is not influenced by the distance between the air blowing opening of the hair drier and the hands, so that the problems that the hands are easily scalded and are not beneficial to quickly drying the hands because the hands are required to be closer to the air blowing opening of the hair drier during hand drying are easily avoided.
The parts (such as the AC-DC conversion circuit and the like) which are not involved in the hair dryer, the control circuit thereof and the hair dryer device are the same as or can be realized by the prior art.
The above embodiments are only used to further illustrate a hair dryer, a control circuit and a blowing device thereof, but the present invention is not limited to the embodiments, and any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention fall within the protection scope of the technical solution of the present invention.
Claims (14)
1. The utility model provides a hair-dryer control circuit, includes the blowing circuit that is connected with at least the motor of blowing, is connected with the heating circuit and the first power supply circuit of heater strip at least, its characterized in that: the first induction control module comprises a first induction component, a first switching device and a normally-open first relay, the first induction component is used for inducing a first induced component arranged on a base for placing a hair dryer, the output of the first induction component is connected to the input of the first switching device, and the first switching device and a coil of the first relay are connected in series on the second power circuit, so that the first switching device controls whether the coil of the first relay is electrified or not according to an output signal of the first induction component; one end of the blowing circuit and one end of the heating circuit are respectively connected with one end of the first power supply circuit, and the other end of the blowing circuit and the other end of the heating circuit are respectively connected with the other end of the first power supply circuit through a contact group of the first relay.
2. The blower control circuit of claim 1, wherein: the heating wire heating device is characterized by further comprising a first operating switch and a second operating switch, wherein the second operating switch is connected with the heating wire in series to form a series circuit, the series circuit is connected with the blowing circuit in parallel to form a parallel module, and the parallel module and the first operating switch are connected on the first power supply circuit in series.
3. The blower control circuit of claim 2, wherein: the second induction control module comprises a second induction component, a second switching device and a normally-closed second relay, the second induction component is used for inducing a second induced component arranged on the base, the output of the second induction component is connected to the input of the second switching device, and the second switching device and a coil of the second relay are connected in series on the second power supply circuit, so that the second switching device controls whether the coil of the second relay is powered according to an output signal of the second induction component; the second relay comprises two groups of contacts, wherein one group of contacts is connected with the parallel module and the first operating switch in series on the first power circuit, and the other group of contacts is connected on the series circuit.
4. The blower control circuit of claim 2, wherein: the first operating switch is a single-pole three-throw switch, a first static contact end of the first operating switch is suspended, a second static contact end and a third static contact end are connected together, and the second static contact end is connected with a diode D1 in series; the second operating switch is a single-pole double-throw switch, a first static contact end and a second static contact end of the second operating switch are connected together, and a first static contact end of the second operating switch is connected with a diode D2.
5. The blower control circuit of claim 1, wherein: the contact group comprises two groups of contacts, wherein one group of contacts is connected between the other end of the first power supply circuit and the other end of the blowing circuit, and the other group of contacts is connected between the other end of the first power supply circuit and the other end of the heating circuit.
6. The blower control circuit of claim 1, wherein: the two ends of the first power supply circuit are respectively used for connecting commercial power, the second power supply circuit is an AC-DC conversion circuit, and the two input ends of the second power supply circuit are respectively connected with the two ends of the first power supply circuit; the wind blowing circuit is also connected with a rectifier bridge and a current-limiting inductor; and the heating circuit is also connected with a diode D3.
7. The blower control circuit of claim 1, wherein: the first sensing component is a Hall sensor U1, the input end of the Hall sensor U1 is connected with the positive output end of the second power supply circuit, a resistor R2 is connected between the input end and the output end of the Hall sensor U1, a capacitor C1 is connected between the grounding end and the output end of the first sensing component, a resistor R3 is connected between the output end of the Hall sensor U1 and the input end of the first switching device, and a resistor R1 is connected between the input end of the first switching device and the positive output end of the second power supply circuit; a diode D5 is connected between two ends of the coil of the first relay; the first switching device is an MOS tube or a transistor.
8. The blower control circuit of claim 3, wherein: the second sensing component is a Hall sensor U2, the input end of the Hall sensor U2 is connected with the positive output end of the second power supply circuit, a resistor R5 is connected between the input end and the output end of the Hall sensor U2, a capacitor C2 is connected between the grounding end and the output end of the Hall sensor U2, a resistor R4 is connected between the output end of the Hall sensor U2 and the input end of the second switching device, and a resistor R1 is connected between the input end of the second switching device and the positive output end of the second power supply circuit; a diode D4 is connected between two ends of the coil of the first relay; the second switching device is an MOS tube or a transistor.
9. A hair dryer, includes hair dryer casing, its characterized in that: further comprising blower control circuitry as claimed in any one of claims 1 to 8 provided in the blower housing.
10. The utility model provides a blowing device, includes the hair-dryer and can place the frame of hair-dryer, its characterized in that: the base is provided with a first induced component; a hair dryer comprising a hair dryer control circuit as claimed in any one of claims 1 to 8, said first sensing means being arranged to sense said first sensed member, said first sensing means outputting a signal to cause said first switching device to assume an on state when said first sensing means senses said first sensed member.
11. The blowing device of claim 10, characterized in that: the machine base is further provided with a human body part sensor and a controller, the output of the human body part sensor is connected to the controller, and the controller controls the first sensed part to enter a sensed working state or a non-sensed dormant state according to a signal transmitted by the human body part sensor.
12. The blowing device of claim 11, characterized in that: the first sensing component is a Hall sensor U1, the first sensed component is an electromagnet, and the electromagnet is electrically connected with the controller; the human body part sensor is an infrared sensor.
13. The blowing device of claim 10, characterized in that: the hair drier control circuit also comprises a first operating switch and a second operating switch, the second operating switch is connected with the heating wire in series to form a series circuit, the series circuit is connected with the hair drier circuit in parallel to form a parallel module, and the parallel module and the first operating switch are connected with the first power supply circuit in series;
the hair drier control circuit also comprises a second induction control module, wherein the second induction control module comprises a second induction part, a second switching device and a normally-closed second relay, the output of the second induction part is connected to the input of the second switching device, and the second switching device and a coil of the second relay are connected in series on the second power supply circuit, so that the second switching device controls whether the coil of the second relay is powered on or not according to an output signal of the second induction part; the second relay comprises two groups of contacts, wherein one group of contacts is connected with the parallel module and the first operating switch in series on the first power circuit, and the other group of contacts is connected with the series circuit;
the base is further provided with a second inducted part, the second inducted part is used for inducting the second inducted part, and when the second inducted part inducts the second inducted part, the second inducted part outputs a signal to enable the second switch device to be in a conducting state.
14. A blowing device according to claim 13, characterised in that: the second induction part is a Hall sensor U2, and the second part to be induced is a permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211048535.7A CN115356966A (en) | 2022-08-30 | 2022-08-30 | Hair drier, control circuit thereof and blowing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211048535.7A CN115356966A (en) | 2022-08-30 | 2022-08-30 | Hair drier, control circuit thereof and blowing device |
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| Publication Number | Publication Date |
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| CN115356966A true CN115356966A (en) | 2022-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211048535.7A Pending CN115356966A (en) | 2022-08-30 | 2022-08-30 | Hair drier, control circuit thereof and blowing device |
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| CN (1) | CN115356966A (en) |
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| JP6656613B1 (en) * | 2018-10-10 | 2020-03-04 | 株式会社石川エナジーリサーチ | Hand dryer |
| CN216417008U (en) * | 2021-08-13 | 2022-05-03 | 九牧厨卫股份有限公司 | Air blowing device with drying function and bathroom cabinet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1480094A2 (en) * | 2003-05-22 | 2004-11-24 | Calsonic Kansei Corporation | Servomotor controller |
| 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 |
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