CN114711527A - Hair drier integrated circuit capable of switching states automatically - Google Patents
Hair drier integrated circuit capable of switching states automatically Download PDFInfo
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- CN114711527A CN114711527A CN202210243794.9A CN202210243794A CN114711527A CN 114711527 A CN114711527 A CN 114711527A CN 202210243794 A CN202210243794 A CN 202210243794A CN 114711527 A CN114711527 A CN 114711527A
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- 238000010438 heat treatment Methods 0.000 claims abstract description 84
- 238000001514 detection method Methods 0.000 claims description 24
- 238000004804 winding Methods 0.000 claims description 20
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000007664 blowing Methods 0.000 abstract description 19
- 238000012827 research and development Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000020169 heat generation Effects 0.000 description 4
- 206010019049 Hair texture abnormal Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003700 hair damage Effects 0.000 description 1
- 208000021760 high fever Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
Abstract
The invention discloses a blower integrated circuit in a self-switching state, which comprises a power supply driving module, a control module and a connecting structure switching module, wherein the control module is connected with the power supply driving module so as to control the power supply driving module to adjust the magnitude of power supply current; the connecting structure switching module is internally provided with a current threshold value, when the power supply current is greater than the current threshold value, the connecting structure switching module enables the second heating piece and the third heating piece to be connected in series, and when the power supply current is less than the current threshold value, the connecting structure switching module enables the second heating piece and the third heating piece to be connected in parallel; this design constructs simply, has good effect of blowing, production, research and development cost reduction.
Description
Technical Field
The invention relates to the technical field of hair dryers, in particular to a hair dryer integrated circuit in a self-switching state.
Background
The hair-dryer is used for drying the hair, generally has high fever and well hot gear, and the user selects different temperatures for use according to the demand, and traditional hair-dryer generally includes the fan and generates heat the piece, when switching different temperatures, and drive circuit in the hair-dryer exerts different supply current for generating heat the piece to generate heat and send different heats.
Although hot air can quickly dry hair, the hair is damaged, the applicant carries out research and development aiming at a hair drier, a main air duct, a first auxiliary air duct and a second auxiliary air duct which are independent are arranged in the hair drier, a main air outlet communicated with the main air duct is positioned between a first auxiliary air outlet communicated with the first auxiliary air duct and a second auxiliary air outlet communicated with the second auxiliary air duct, a first heating piece is arranged in the main air duct, a second heating piece is arranged in the first auxiliary air duct, a third heating piece is arranged in the second auxiliary air duct, when a user selects a hot gear, the heating power of the first heating piece is higher than that of the second heating piece and that of the third heating piece, so that the temperature of the central position of the air flow blown out by the hair drier is higher, the ambient temperature is relatively lower, and the hair damage caused by the air blowing mode is greatly reduced through data acquisition and discovery of a certain number of crowds by the applicant, therefore, the applicant intends to popularize the hair dryer having this blowing mode.
However, in the actual research and development process, the applicant finds that the number of the heat generating parts is increased compared with that of the conventional hair dryer, and the heat generating powers of the second heat generating part and the third heat generating part are different from those of the first heat generating part, so that the separate control is needed.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the hair dryer integrated circuit in the self-switching state, which has the advantages of simple structure, good hair drying effect and low production and research and development cost.
A self-switching state blower integrated circuit according to an embodiment of a first aspect of the present invention, for use in a blower, the blower comprises a shell, a fan, a first heating piece, a second heating piece and a third heating piece, an air cavity, a main air duct, a first auxiliary air duct and a second auxiliary air duct which are communicated with the air cavity are arranged in the shell, the shell is provided with an air inlet communicated with the air cavity, a main air outlet communicated with the main air duct, a first auxiliary air outlet communicated with the first auxiliary air duct and a second auxiliary air outlet communicated with the second auxiliary air duct, the main air outlet is positioned between the first auxiliary air outlet and the second auxiliary air outlet, the fan is positioned in the air cavity, the first heating element is positioned in the main air duct, the second heating element is positioned in the first auxiliary air duct, and the third heating element is positioned in the second auxiliary air duct; the integrated circuit includes: the power supply driving module is used for being connected with a power supply; the control module is connected with the power supply driving module so as to control the power supply driving module to adjust the magnitude of the power supply current; the connection structure switching module is respectively connected with the second heating piece and the third heating piece to form at least part of switching units, the switching units are connected with the first heating piece in series to form at least part of series branches, and the output end of the power supply driving module is connected with the series branches to supply power to the series branches; the connecting structure switching module is internally provided with a current threshold value, when the supply current is greater than the current threshold value, the connecting structure switching module enables the second heating piece and the third heating piece to be connected in series, and when the supply current is less than the current threshold value, the connecting structure switching module enables the second heating piece and the third heating piece to be connected in parallel.
The integrated circuit of the hair dryer with the self-switching state, provided by the embodiment of the invention, has the following beneficial effects:
according to the integrated circuit of the hair drier, the hair drier is driven to at least have a high-heat blowing mode and a medium-heat blowing mode, the power supply driving module outputs relatively high power supply current in the high-heat blowing mode, the power supply current is larger than a current threshold value, the connecting structure switching module enables the second heating part and the third heating part to be connected in series, currents passing through the first heating part, the second heating part and the third heating part are equal in a series branch and are the power supply current output by the power supply driving module, and the fan starts blowing, so that the hair drier can blow out high-heat wind current and quickly blow and dry hair with high humidity; in a medium-heat blowing mode, the power supply driving module outputs relatively low power supply current, the power supply current is smaller than a current threshold value, the connection structure switching module enables the second heating part and the third heating part to be connected in parallel, the first heating part is connected in series with a switching unit formed by the second heating part and the third heating part, at the moment, the current flowing through the first heating part is the size of the power supply current, the second heating part and the third heating part play a shunting role, and the heat productivity of the second heating part and the third heating part is smaller than that of the first heating part, so that the aims of relatively low ambient temperature and high temperature at the center of the air flow blown out by the hair dryer are fulfilled, a user can blow and dry hair with low humidity, and meanwhile damage to the hair can be reduced; the hair drier integrated circuit structure of this design has realized generating heat the switching of a mode of generating heat to first heating piece, second heating piece and third according to supply current's size is automatic, simple structure, has good effect of blowing, production, research and development cost reduction.
According to some embodiments of the invention, the connection structure switching module comprises a first current limiter, a diode D4 and a second current limiter, one end of the first current limiter is respectively connected with one end of the second heating element and one end of the first heating element, the other end of the first current limiter is respectively connected with one end of the third heating element and the cathode of the diode D4, the other end of the second heating element is respectively connected with one end of the second current limiter and the anode of the diode D4, the other end of the second current limiter is connected with the other end of the second heating element, wherein the first current limiter and the second current limiter are both open when the supply current is greater than the current threshold, when the supply current is less than the current threshold, the first current limiter and the second current limiter are both closed.
According to some embodiments of the invention, the control module further comprises a current detection module, the current detection module is connected with the series branch to detect supply current information, and the current detection module is connected with the control module.
According to some embodiments of the present invention, the power supply driving module includes a rectification voltage-regulating unit and a switch driving unit, an input end of the rectification voltage-regulating unit is used for being connected to a power supply, an output end of the rectification voltage-regulating unit is connected to one end of the series branch, an input end of the switch driving unit is connected to the other end of the series branch, an output end of the switch driving unit is grounded, and the control module is connected to a controlled end of the switch driving unit to regulate a magnitude of a power supply current through the switch driving unit.
According to some embodiments of the present invention, the rectification voltage regulation unit includes a rectifier, a transformer and a switching tube Q2, an input end of the rectifier is configured to be connected to a power supply, an output end of the rectifier is connected to one end of a primary winding of the transformer, an input end of the switching tube Q2 is connected to the other end of the primary winding of the transformer, a secondary winding of the transformer is connected to one end of the series branch, an output end of the switching tube Q2 is grounded, and the control module is connected to a controlled end of the switching tube Q2.
According to some embodiments of the present invention, the power supply system further comprises a voltage detection module, wherein the voltage detection module is configured to obtain power supply voltage information of the transformer, and the control module is connected to the voltage detection module.
According to some embodiments of the invention, the power supply system further comprises a gear input module, wherein the gear input module is used for acquiring a gear control signal, and the control module is connected with the gear input module to adjust the magnitude of the power supply current according to the gear control signal.
According to some embodiments of the present invention, the first auxiliary air outlet and the second auxiliary air outlet are combined to form an annular air outlet area, and the air outlet area is sleeved on the main air outlet.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a perspective view of a hair dryer;
FIG. 2 is a schematic view of the internal structure of the hair dryer;
FIG. 3 is a schematic view of an outlet of a hair dryer;
FIG. 4 is a block diagram of the schematic structure of one embodiment of the integrated circuit of the present invention;
FIG. 5 is a circuit diagram of an integrated circuit according to an embodiment of the present invention.
Reference numerals:
the air conditioner comprises a shell 110, a fan 120, an air cavity 130, an air inlet 131, a main air duct 140, a first auxiliary air duct 150, a second auxiliary air duct 160, a main air outlet 170, a first auxiliary air outlet 180, a second auxiliary air outlet 190, a first heating part 200, a second heating part 300, a third heating part 400, a power supply driving module 500, a rectification voltage regulating unit 510, a primary winding 511, a secondary winding 512, a switch driving unit 520, a current detecting module 530, a voltage detecting module 540, a detecting winding 541, a control module 600, a connection structure switching module 700, a first current limiter 710, a second current limiter 720 and a gear input module 800.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the positional or orientational descriptions referred to, for example, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the positional or orientational relationships shown in the drawings and are for convenience of description and simplicity of description only, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 5, an integrated circuit of a blower 120 with a self-switching status according to an embodiment of the first aspect of the invention is applied to a blower 120, the blower 120 includes a housing 110, a blower 120, a first heat generating element 200, a second heat generating element 300, and a third heat generating element 400, a wind cavity 130, a main wind channel 140, a first auxiliary wind channel 150, and a second auxiliary wind channel 160 are disposed in the housing 110, the housing 110 is provided with a wind inlet 131 communicated with the wind cavity 130, a main wind outlet 170 communicated with the main wind channel 140, a first auxiliary wind outlet 180 communicated with the first auxiliary wind channel 150, and a second auxiliary wind outlet 190 communicated with the second auxiliary wind channel 160, the main wind outlet 170 is located between the first auxiliary wind outlet 180 and the second auxiliary wind outlet 190, the blower 120 is located in the wind cavity 130, the first heat generating element 200 is located in the main wind channel 140, the second heat generating element 300 is located in the first auxiliary wind channel 150, the third heat generating member 400 is located in the second auxiliary duct 160; the integrated circuit includes: the power supply driving module 500 is used for being connected with a power supply; the control module 600 is connected with the power supply driving module 500 to control the power supply driving module 500 to adjust the magnitude of the power supply current; a connection structure switching module 700 respectively connected with the second heat generating part 300 and the third heat generating part 400 to form at least a part of a switching unit, the switching unit is connected in series with the first heat generating part 200 to form at least a part of a series branch, and an output end of the power supply driving module 500 is connected with the series branch to supply power to the series branch; the connection structure switching module 700 has a current threshold, when the supply current is greater than the current threshold, the connection structure switching module 700 connects the second heat generating member 300 and the third heat generating member 400 in series, and when the supply current is less than the current threshold, the connection structure switching module 700 connects the second heat generating member 300 and the third heat generating member 400 in parallel.
The main outlet 170, the first auxiliary outlet 180, and the second auxiliary outlet 190 may be located in front of the housing 110 and face the same direction, and the inlet 131 may be located behind the housing 110.
The first heat generating member 200, the second heat generating member 300, and the third heat generating member 400 may each employ a heat generating element such as a heating wire, and the heat generating resistances of the first heat generating member 200, the second heat generating member 300, and the third heat generating member 400 may be the same.
The control module 600 may be composed of a processing chip such as an MCU and an auxiliary circuit, and may control the operation of the power supply driving module 500 to adjust a proper power supply voltage and power supply current.
In some embodiments of the present invention, a gear input module 800 is further included, the gear input module 800 is configured to obtain a gear control signal, and the control module 600 is connected to the gear input module 800 to adjust the magnitude of the supply current according to the gear control signal.
Specifically, the gear input module 800 may be a potentiometer, a toggle rheostat, an encoder, etc., a user operates the gear input module 800 to different gears to form different gear control signals, and the control module 600 adjusts the magnitude of the power supply current according to the gear control signals, so as to control the blower 120 to enter different blowing modes.
The integrated circuit of the hair drier 120 of the invention drives the hair drier 120 to at least have a high heat blowing mode and a medium heat blowing mode, in the high heat blowing mode, the power supply driving module 500 outputs relatively high power supply current, the power supply current is larger than a current threshold value, the connection structure switching module 700 enables the second heating element 300 and the third heating element 400 to be mutually connected in series, in a series branch, the currents passing through the first heating element 200, the second heating element 300 and the third heating element 400 are equal and are the power supply current output by the power supply driving module 500, the fan 120 starts blowing, at the moment, the hair drier 120 can blow out higher heat air current, and the hair with higher humidity can be quickly dried; in the middle hot air blowing mode, the power supply driving module 500 outputs relatively low power supply current, the power supply current is smaller than a current threshold value, the connection structure switching module 700 enables the second heating element 300 and the third heating element 400 to be connected in parallel, the first heating element 200 is connected in series with a switching unit formed by the second heating element 300 and the third heating element 400, at this time, the current flowing through the first heating element 200 is the magnitude of the power supply current, the second heating element 300 and the third heating element 400 have a shunting function, and the heat productivity of the second heating element 300 and the third heating element 400 is smaller than that of the first heating element 200, so that the purposes that the central position of the air flow blown out by the blower 120 is high in temperature and the ambient temperature is relatively low are achieved, and a user can be used for drying the hair with low humidity and can reduce damage to the hair; the integrated circuit structure of the hair drier 120 realizes the automatic switching of the heating modes of the first heating piece 200, the second heating piece 300 and the third heating piece 400 according to the size of the power supply current, has simple structure and good blowing effect, and reduces the production and research and development costs.
In some embodiments of the present invention, as shown in fig. 3, the first auxiliary air outlet 180 and the second auxiliary air outlet 190 are combined to form an annular air outlet region, and the air outlet region is sleeved on the main air outlet 170, so that the effect of relatively low ambient temperature and relatively high temperature at the center of the air flow in the middle hot air blowing mode is more obvious.
In some embodiments of the present invention, as shown in fig. 5, the connection structure switching module 700 includes a first current limiter 710, a diode D4, and a second current limiter 720, one end of the first current limiter 710 is connected to one end of the second heat generating part 300 and one end of the first heat generating part 200, the other end of the first current limiter 710 is connected to one end of the third heat generating part 400 and a cathode of the diode D4, the other end of the second heat generating part 300 is connected to one end of the second current limiter 720 and an anode of the diode D4, and the other end of the second current limiter 720 is connected to the other end of the second heat generating part 300, wherein when the supply current is greater than the current threshold, the first current limiter 710 and the second current limiter 720 are both open, and when the supply current is less than the current threshold, the first current limiter 710 and the second current limiter 720 are both closed.
The first current limiter 710 and the second current limiter 720 can be selected from conventional semiconductor current limiting devices, a cutoff current threshold is set inside the semiconductor current limiting device according to the characteristics of the first current limiter 710 and the second current limiter 720, when the input current is greater than the cutoff current threshold, the first current limiter 710 and the second current limiter 720 are turned off, and when the input current is less than the cutoff current threshold, the first current limiter 710 and the second current limiter 720 are turned on.
For example, the cutoff current threshold of the first current limiter 710 and the second current limiter 720 is 1A, assuming that the resistance values of the first heat generating component 200, the second heat generating component 300, and the third heat generating component 400 are all R, in the high heat blowing mode, the power supply driving module 500 outputs a constant power supply current of 3A, and the first current limiter 710 and the second current limiter 720 are turned off, then the first heat generating component 200, the second heat generating component 300, and the third heat generating component 400 are connected in series, and the current in the series branch is 3A, then the heat generation amount Q is 9Rt (t is the heat generation time); in the medium heat blowing mode, the power supply driving module 500 outputs a constant power supply current of 1A, the first current limiter 710 and the second current limiter 720 are both turned on, the second heat generating component 300 and the third heat generating component 400 are connected in parallel and then connected in series with the first heat generating component 200, the current in the series branch is 1A, that is, the current flowing through the first heat generating component 200 is 1A, the currents flowing through the second heat generating component 300 and the third heat generating component 400 are respectively 0.5A, the heat generation amount Q1 of the first heat generating component 200 in the main air duct 140 is 1/8 r t, and the heat generation amounts Q2 and 1/8 r t generated by the second heat generating component 200 and the third heat generating component 400 in the first auxiliary air duct 150 and the second auxiliary air duct 160 are both, so as to generate a difference, thereby achieving the purposes of high temperature at the center of the air flow blown by the blower 120 and relatively low ambient temperature, and reducing damage to the hair.
In some embodiments of the present invention, a current detection module 530 is further included, the current detection module 530 is connected to the series branch to detect the supply current information, the current detection module 530 is connected to the control module 600, and through the detection of the supply current information, the control module 600 may feedback and adjust the operation of the power supply driving module 500, so that the supply current output by the power supply driving module 500 is relatively constant.
Specifically, as shown in fig. 5, the current detection module 530 may include a resistor R4 and a resistor R5, one end of the resistor R4 is connected to one end of the series branch and one end of the resistor R5, the other end of the resistor R5 is grounded, and the other end of the resistor R4 is connected to the control module 600.
In some embodiments of the present invention, as shown in fig. 4 and 5, the power supply driving module 500 includes a rectification voltage-regulating unit 510 and a switch driving unit 520, an input end of the rectification voltage-regulating unit 510 is configured to be connected to a power supply, an output end of the rectification voltage-regulating unit 510 is connected to one end of the series branch, an input end of the switch driving unit 520 is connected to the other end of the series branch, an output end of the switch driving unit 520 is grounded, and the control module 600 is connected to a controlled end of the switch driving unit 520 to regulate a magnitude of a power supply current through the switch driving unit 520.
The switch driving unit 520 may include a switching tube Q1, one end of the series branch may be connected to one end of the resistor R4 and one end of the resistor R5 through a switching tube Q1, specifically, an input end of the switching tube Q1 is connected to one end of the series branch, an output end of the switching tube Q1 is connected to one end of the resistor R4 and one end of the resistor R5, and the control module 600 may output a PWM signal to control on/off of the switching tube Q1, so as to adjust the magnitude of the supply current.
In some embodiments of the present invention, as shown in fig. 4 and 5, the rectification voltage-regulating unit 510 includes a rectifier D1, a transformer T1, and a switching tube Q2, an input terminal of the rectifier D1 is configured to be connected to a power supply, an output terminal of the rectifier D1 is connected to one end of the primary winding 511 of the transformer T1, an input terminal of the switching tube Q2 is connected to the other end of the primary winding 511 of the transformer, the secondary winding 512 of the transformer T1 is connected to one end of the series branch, an output terminal of the switching tube Q2 is grounded, and the control module 600 is connected to the controlled terminal of the switching tube Q2.
The control module 600 can output a PWM signal to control the on/off of the switching tube Q2, so as to adjust the input voltage input to the primary winding 511, and finally realize the adjustment of the output voltage through the coupling transformation of the primary winding 511 and the secondary winding 512, so that the control module 600 can provide a suitable power supply voltage for the first heat generating element 200, the second heat generating element 300, and the third heat generating element 400.
In some embodiments of the present invention, the power supply driving module 500 further includes a voltage detection module 540, the voltage detection module 540 is configured to obtain power supply voltage information of the transformer, and the control module 600 is connected to the voltage detection module 540, and through detecting the power supply voltage information, the control module 600 may adjust the operation of the power supply driving module 500 in a feedback manner, so that the power supply voltage output by the power supply driving module 500 is relatively constant.
Specifically, as shown in fig. 5, the voltage detection module 540 includes a detection winding 541, a resistor R2, and a resistor R3, the detection winding 541 is coupled to the primary winding 511 or the secondary winding 512, one end of the resistor R3 is connected to one end of the detection winding 541, the other end of the resistor R3 is connected to one end of the resistor R2 and the control module 600, and the other end of the resistor R2 is grounded.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A blower integrated circuit with a self-switching state is characterized by being applied to a blower, the blower comprises a shell, a fan, a first heating piece, a second heating piece and a third heating piece, an air cavity, a main air duct, a first auxiliary air duct and a second auxiliary air duct which are communicated with the air cavity are arranged in the shell, the shell is provided with an air inlet communicated with the air cavity, a main air outlet communicated with the main air duct, a first auxiliary air outlet communicated with the first auxiliary air duct and a second auxiliary air outlet communicated with the second auxiliary air duct, the main air outlet is positioned between the first auxiliary air outlet and the second auxiliary air outlet, the fan is positioned in the air cavity, the first heating element is positioned in the main air duct, the second heating element is positioned in the first auxiliary air duct, and the third heating element is positioned in the second auxiliary air duct; the integrated circuit includes:
the power supply driving module is used for being connected with a power supply;
the control module is connected with the power supply driving module so as to control the power supply driving module to adjust the magnitude of the power supply current;
the connection structure switching module is respectively connected with the second heating piece and the third heating piece to form at least part of switching units, the switching units are connected with the first heating piece in series to form at least part of series branches, and the output end of the power supply driving module is connected with the series branches to supply power to the series branches; the connecting structure switching module is internally provided with a current threshold value, when the supply current is greater than the current threshold value, the connecting structure switching module enables the second heating piece and the third heating piece to be connected in series, and when the supply current is less than the current threshold value, the connecting structure switching module enables the second heating piece and the third heating piece to be connected in parallel.
2. A self-switching state blower integrated circuit as claimed in claim 1, wherein: the connection structure switching module comprises a first current limiter, a diode D4 and a second current limiter, wherein one end of the first current limiter is connected with one end of the second heat generating component and one end of the first heat generating component respectively, the other end of the first current limiter is connected with one end of the third heat generating component and the cathode of the diode D4 respectively, the other end of the second heat generating component is connected with one end of the second current limiter and the anode of the diode D4 respectively, and the other end of the second current limiter is connected with the other end of the second heat generating component, wherein when the supply current is greater than the current threshold, the first current limiter and the second current limiter are both open, and when the supply current is smaller than the current threshold, the first current limiter and the second current limiter are both closed.
3. The integrated circuit of claim 1, wherein said self-switching integrated circuit is configured to: the power supply system further comprises a current detection module, the current detection module is connected with the series branch to detect power supply current information, and the current detection module is connected with the control module.
4. A self-switching state blower integrated circuit as claimed in claim 1, wherein: the power supply driving module comprises a rectification voltage regulating unit and a switch driving unit, wherein the input end of the rectification voltage regulating unit is used for being connected with a power supply, the output end of the rectification voltage regulating unit is connected with one end of the series branch, the input end of the switch driving unit is connected with the other end of the series branch, the output end of the switch driving unit is grounded, and the control module is connected with the controlled end of the switch driving unit so as to pass through the size of the power supply current regulated by the switch driving unit.
5. A self-switching state blower integrated circuit as claimed in claim 4, wherein: the rectification voltage regulating unit includes rectifier, transformer and switch tube Q2, the input of rectifier be used for with power supply be connected, the output of rectifier with the primary winding's of transformer one end is connected, switch tube Q2's input with the primary winding's of transformer other end is connected, the secondary winding of transformer with the one end of series branch is connected, switch tube Q2's output ground connection, control module with switch tube Q2's controlled end is connected.
6. A self-switching state blower integrated circuit as claimed in claim 5, wherein: the transformer power supply system further comprises a voltage detection module, wherein the voltage detection module is used for acquiring power supply voltage information of the transformer, and the control module is connected with the voltage detection module.
7. A self-switching state blower integrated circuit as claimed in claim 1, wherein: the gear input module is used for acquiring gear control signals, and the control module is connected with the gear input module so as to adjust the size of the power supply current according to the gear control signals.
8. A self-switching state blower integrated circuit as claimed in claim 1, wherein: the first auxiliary air outlet and the second auxiliary air outlet are combined to form an annular air outlet area, and the air outlet area is sleeved on the main air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210243794.9A CN114711527A (en) | 2022-03-10 | 2022-03-10 | Hair drier integrated circuit capable of switching states automatically |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210243794.9A CN114711527A (en) | 2022-03-10 | 2022-03-10 | Hair drier integrated circuit capable of switching states automatically |
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| CN114711527A true CN114711527A (en) | 2022-07-08 |
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| CN202210243794.9A Pending CN114711527A (en) | 2022-03-10 | 2022-03-10 | Hair drier integrated circuit capable of switching states automatically |
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