CN113040496A

CN113040496A - Air blower, air nozzle and air blowing control method

Info

Publication number: CN113040496A
Application number: CN201911369155.1A
Authority: CN
Inventors: 周文凯; 朱涛; 舒超; 唐冬冬
Original assignee: Tineco Intelligent Technology Co Ltd
Current assignee: Tineco Intelligent Technology Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2021-06-29

Abstract

The embodiment of the application provides a blower, a tuyere and a blowing control method. In the embodiment of the application, a coil is arranged on an air duct of the hair drier, and a metal component or a magnet is adaptively arranged on a tuyere; the coil can generate electromagnetic force in the electrified state, and when the air nozzle is close to the air duct, the metal component or the magnet on the air nozzle can be adsorbed by means of the electromagnetic force, so that the aim of connecting the air duct and the air nozzle is fulfilled. The mode of this application embodiment utilizing electromagnetic force to connect the tuyere, simple to operate, the tuyere is close to the automatic absorption of dryer, and the coil outage back electromagnetic force disappears, and the tuyere can break away from the dryer automatically, solves under the traditional mechanical connection mode tuyere installation inconvenient, be difficult to take off the scheduling problem.

Description

Air blower, air nozzle and air blowing control method

Technical Field

The application relates to the technical field of electric appliances, in particular to a hair drier, an air nozzle and a blowing control method.

Background

The blower is an electric appliance formed by combining a group of electric heating wires and a high-rotating-speed small fan. In order to meet the different blowing requirements of users, hair dryers are generally equipped with two to three nozzles. In use, a user may select an appropriate air nozzle to mount it to the barrel of a hair dryer.

In the prior art, the air duct and the air nozzle are generally connected by adopting a lock catch structure. The structure connection mode depends on the lock catch between the structures, the lock catch position needs to be aligned, the installation is inconvenient, and the structure is not easy to take down.

Disclosure of Invention

Aspects of the application provide a hair drier, tuyere and blowing control method for solve the installation inconvenient, difficult scheduling problem of taking off between dryer and the tuyere.

The embodiment of the application provides a hair drier, includes: a body; the machine body comprises an air duct, and at least one coil is arranged on the air duct; at least one coil generates electromagnetic force in a power-on state, and the air nozzle with a metal component or a magnet can be attached and connected.

The embodiment of the application provides a hair drier, includes: a body; the machine body comprises an air duct, and at least one coil is arranged on the air duct; at least one coil generates electromagnetic force in a power-on state and can be attached to a tuyere with a metal component or a magnet; further comprising: the identification circuit is arranged on the machine body; the identification circuit can identify the type of the air nozzle which is connected with the air duct in an adsorption way when the air duct is connected with the air nozzle in an adsorption way.

The embodiment of the application provides a hair drier, includes: a body; the machine body comprises an air duct which can be connected with an air nozzle; the machine body is also provided with an identification circuit which can identify the type of the air nozzle connected with the air duct.

The embodiment of the application provides a tuyere, is equipped with at least one metal assembly or magnet on the tuyere body, and under the effect of electromagnetic force, the tuyere can be adsorbed and connect on the dryer of hair-dryer.

The embodiment of the present application further provides a method for controlling blowing, including: identifying a type of a tuyere connected with a blower duct; determining blowing parameters according to the type of the air nozzle; and controlling the blower to perform blowing operation according to the blowing parameters.

In the embodiment of the application, a coil is arranged on an air duct of the hair drier, and a metal component or a magnet is adaptively arranged on a tuyere; the coil can generate electromagnetic force in the electrified state, and when the air nozzle is close to the air duct, the metal component or the magnet on the air nozzle can be adsorbed by means of the electromagnetic force, so that the aim of connecting the air duct and the air nozzle is fulfilled. The mode of this application embodiment utilizing electromagnetic force to connect the tuyere, simple to operate, the tuyere is close to the automatic absorption of dryer, and the coil outage back electromagnetic force disappears, and the tuyere can break away from the dryer automatically, solves under the traditional mechanical connection mode tuyere installation inconvenient, be difficult to take off the scheduling problem.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1a is a schematic diagram of a blower according to an exemplary embodiment of the present disclosure;

FIG. 1b is a schematic diagram of a series connection between coils provided by an exemplary embodiment of the present application;

FIG. 1c is a schematic diagram of a parallel connection between coils provided by an exemplary embodiment of the present application;

fig. 1d is a schematic view illustrating that coils are uniformly distributed on an end surface of an air outlet of an air duct according to an exemplary embodiment of the present application;

fig. 1e is a schematic diagram of a coil on an outer side wall of an air outlet of an air duct according to an exemplary embodiment of the present application;

fig. 1f is a schematic diagram of coils non-uniformly distributed on an outer side wall of an air outlet of an air duct according to an exemplary embodiment of the present application;

FIG. 1g is a schematic diagram of a coil connected in series with a coil driving circuit according to an exemplary embodiment of the present application;

FIG. 1h is a schematic diagram of a coil driver circuit connected in parallel with a coil according to an exemplary embodiment of the present disclosure;

fig. 1i is a schematic structural diagram of a coil driving circuit according to an exemplary embodiment of the present disclosure;

figure 2a is a schematic diagram of another blower according to an exemplary embodiment of the present application;

FIG. 2b is a schematic diagram of an identification circuit according to an exemplary embodiment of the present disclosure;

fig. 2c is a schematic structural diagram of a contact switch provided in an exemplary embodiment of the present application;

FIG. 2d is a schematic diagram of an auxiliary circuit according to an exemplary embodiment of the present application;

FIG. 2e is a schematic diagram of another auxiliary circuit according to an exemplary embodiment of the present disclosure;

FIG. 2f is a schematic diagram of a further auxiliary circuit provided in an exemplary embodiment of the present application;

figure 3a is a schematic diagram of a further blower according to an exemplary embodiment of the present application;

FIG. 3b is a schematic diagram of another identification circuit according to an exemplary embodiment of the present application;

FIG. 4a is a schematic structural diagram of a tuyere provided in an exemplary embodiment of the present application;

FIG. 4b is a schematic diagram of a structure of forming a groove on a tuyere according to an exemplary embodiment of the present disclosure;

fig. 5 is a schematic flow chart of a blowing control method according to an exemplary embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Aiming at the technical problem that the existing air duct and air nozzles are inconvenient to install, the embodiment of the application provides an electromagnetic adsorption connection mode, in order to realize the electromagnetic adsorption connection, a coil is arranged on the air duct of the blower, and a metal component or a magnet is adaptively arranged on the air nozzles; the coil can generate electromagnetic force in the electrified state, and when the air nozzle is close to the air duct, the metal component or the magnet on the air nozzle can be adsorbed by means of the electromagnetic force, so that the aim of connecting the air duct and the air nozzle is fulfilled. The mode of this application embodiment utilizing electromagnetic force to connect the tuyere, simple to operate, the tuyere is close to the automatic absorption of dryer, and the coil outage back electromagnetic force disappears, and the tuyere can break away from the dryer automatically, solves under the traditional mechanical connection mode tuyere installation inconvenient, be difficult to take off the scheduling problem.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Fig. 1a is a schematic structural diagram of a blower according to an exemplary embodiment of the present disclosure. As shown in fig. 1a, the blower 100 includes: a body 101; the machine body 101 comprises an air duct 102, and at least one coil 103 is arranged on the air duct 102; the at least one coil 103 generates electromagnetic force in a power-on state, and can be attached to a tuyere with a metal component or a magnet. The style and shape of the blower 100 shown in figure 1a is merely exemplary and not intended to be limiting.

In the present embodiment, the kind of the blower 100 is not limited, and it may be implemented as a household type blower or a commercial type blower, and may also be implemented as a large-sized blower, a medium-sized blower, or a small-sized blower, etc. The body 101 may further include, in addition to the air duct 102, a housing, a handle, a motor, an electric heating element, a wind screen, a switch, a power supply, and other components, which are not all shown or labeled in fig. 1a for the purpose of focusing on the illustration of the air duct structure. Wherein, the operating principle of the blower 100 is as follows: the motor drives the fan blades in the air duct 102 to rotate to generate air flow, when the electric heating element generates heat, hot air is blown out from the air outlet of the air duct 102, and when the electric heating element does not generate heat, cold air is blown out from the air outlet of the air duct 102.

The shape of the air outlet of the air duct 102 is not limited in the embodiments of the present application, and the shape of the air outlet includes, but is not limited to, a circle, a triangle, a square, an ellipse, or a rectangle.

The blower 100 of this embodiment may have multiple accessories, such as may include multiple types of nozzles. Wherein, the tuyere is a fitting part for assisting the modeling of the blower, and can include but is not limited to: a wind collecting nozzle and a wind distributing nozzle. The wind collecting nozzle has the function of improving the wind speed, and when wind enters the narrow wind channel from the wider wind channel, the wind power is more concentrated, and the modeling is more accurate. The effect of wind dispersing nozzle is to reduce the wind speed, and when wind got into than wider wind channel from narrower wind channel, the impact force reduced can not blow indiscriminate hair, is used for blowing the curly hair mostly.

In some applications, the blower 100 needs to use a corresponding type of nozzle in order to achieve better styling, which requires connecting the nozzle to the air duct 102. In the embodiment, at least one coil 103 is arranged on the air duct 102, the at least one coil 103 is a source for generating electromagnetic force, and according to the magnetic effect of the electrified coil, the at least one coil 103 can generate electromagnetic force in the electrified state, and the air nozzle with a metal component or a magnet can be attached and connected by the electromagnetic force. The air nozzle is matched with the air duct 102 and is provided with a metal component or a magnet. Further, after the coil is powered off, the electromagnetic force disappears, and the air nozzle can be automatically separated from the air duct 102, so that the purpose of disassembly is achieved.

The magnitude of the electromagnetic force is influenced by the magnitude of the electrified current and the number of turns of the coil. The number of turns of the coil is not limited in the embodiments of the present application, for example, the number of turns of the coil may be 1 turn, 10 turns, 30 turns, and the like. The number of turns of the different coils 103 may be the same or different. Preferably, the coils with the same number of turns can be selected and used, so that the electromagnetic forces generated by different coils are the same, the electromagnetic forces are balanced in all directions, and the air nozzle can be more firmly adsorbed.

In the embodiment of the present application, the shape of the coil 103 is not limited, and the shape of the coil 103 includes, but is not limited to, circular, square, circular, triangular, and the like. Similarly, the material of the coil 103 is not limited, and any material that can generate electromagnetic force when energized can be used as the material of the coil in this embodiment, for example, the material of the coil includes but is not limited to metal materials such as copper, iron, steel, aluminum, and alloy.

In the embodiment of the present application, the connection manner between the coils 103 is not limited, and the connection manner between the coils 103 includes, but is not limited to, a series connection, a parallel connection, or a series-parallel connection. In any of the above connection methods, it is preferable that the directions of the electromagnetic forces generated by all the coils 103 are as the same as possible and are not mutually exclusive. Fig. 1b shows a schematic view of a series connection between at least one coil 103, and fig. 1c shows a schematic view of a parallel connection between at least one coil 103. In the practical application process, the number of the coils 103 is not limited, and one, two, three, four, six or eight coils can be realized. In fig. 1b and 1c, three coils are illustrated as an example, x1, x2, and x3, respectively. In the series connection, the output terminal of the coil x1 is electrically connected to the input terminal of the coil x2, the output terminal of the coil x2 is electrically connected to the input terminal of the coil x3, the input terminal of the coil x1 is electrically connected to the positive terminal of the power supply terminal (e.g., power supply), and the output terminal of the coil x3 is electrically connected to the negative terminal of the power supply terminal (e.g., power supply). In the parallel connection mode, the input ends x1, x2 and x3 are electrically connected with the positive pole of the power supply end (such as a power supply), and the output ends x1, x2 and x3 are electrically connected with the negative pole of the power supply end (such as the power supply).

In the embodiment of the present application, the position of the at least one coil 103 on the air duct 102 is not limited as long as the electromagnetic force generated by the at least one coil 103 can attract and connect the air nozzle to the air duct 102. In some optional embodiments, the at least one coil 103 may be disposed on an end surface, an outer sidewall, and/or an inner sidewall of the air outlet of the air duct 102. Preferably, the outer side wall and the inner side wall can be the outer side wall and the inner side wall close to the air outlet. The coil 103 is arranged on the end face of the air outlet, on the outer side wall close to the outlet air and/or on the inner side wall close to the air outlet, and electromagnetic force generated after the coil is electrified is easier to adsorb the air nozzle. For example, fig. 1d is a schematic view of at least one coil 103 being disposed on the end surface of the outlet of the air duct 102. Fig. 1e is a schematic view of at least one coil 103 disposed on the outer side wall of the outlet of the air duct 102. In fig. 1e, the dashed line indicates the coil 103 arranged on the shielded side on the outer sidewall.

In an optional embodiment, in order to fix the coil more conveniently and reduce the influence of the coil on the appearance of the air duct, a groove is formed in a position on the air duct 102 where the coil 103 needs to be arranged, and the coil 103 can be embedded in the groove. If at least one coil 103 needs to be arranged on the end surface, the outer side wall and/or the inner side wall of the air outlet of the air duct 102, at least one groove can be formed in the end surface, the outer side wall and/or the inner side wall of the air outlet, and the at least one coil 103 is embedded in the at least one groove respectively. Further optionally, a fixing boss is arranged at the bottom of each groove, and the coil 103 embedded in the groove is sleeved on the fixing boss. So that the coil 103 can be better fixed on the air duct 102. As shown in fig. 1d, a plurality of grooves (the dotted circle in fig. 1d indicates a groove) are formed on the end surface of the air outlet of the air duct 102, a boss is arranged in each groove, and a coil 103 is sleeved on the boss of each groove.

In the embodiment of the present application, the distribution of the at least one coil 103 is not limited, and the distribution includes, but is not limited to, uniform distribution. As shown in fig. 1d, at least one coil 103 is uniformly distributed on the end surface of the air outlet. As shown in fig. 1e, at least one coil 103 is uniformly distributed on the outer sidewall of the outlet. In addition, as shown in fig. 1f, a case where at least one coil 103 is non-uniformly distributed on the outer sidewall of the outlet is shown.

Further, as shown in fig. 1a, the hair dryer 100 further comprises a control system 105, wherein the control system 105 corresponds to the brain of the hair dryer 100, and performs various blowing controls on the hair dryer 100, such as controlling the blowing time, the operation mode, the blowing temperature, the blowing speed and the like of the hair dryer 100. It should be noted that, in fig. 1a, the position of the control system 105 on the machine body is only an illustrative example, and is not limited thereto, and may be determined according to the product structure.

It is noted that at least one coil 103 may be powered directly by the control system 105 of the hair dryer 100, or at least one coil 103 may be powered by a dedicated coil drive circuit. In an alternative embodiment, as shown in figure 1a, the hair dryer 100 further comprises: a coil drive circuit 104 provided on the body 101. In fig. 1a, the position of the coil driving circuit 104 on the machine body is only schematically illustrated, and is not limited thereto. The coil drive circuit 104 is electrically connected to the at least one coil 103 for supplying an energizing current to the at least one coil 103. The coil driving circuit 104 can control the magnitude of the current supplied to the coil, and thus the magnitude of the electromagnetic force. As shown in fig. 1g and 1h, connection diagrams of the coils to be supplied with the energizing current by the coil driving circuit 104 when the coils are connected in series and in parallel are given, respectively.

Further optionally, a switching device is disposed between the coil driving circuit 104 and the at least one coil 103; when the switching device is closed, the coil drive circuit 104 communicates with the at least one coil 103. Alternatively, the switching device includes, but is not limited to: a mechanical switch or an electronic switch. The elements that cause the contacts to open, close, and switch circuits by mechanical operation are called mechanical switches. For example: rotary switches, push-button switches, etc. The electronic switch is an operation unit for realizing the on-off of a circuit by utilizing an electronic circuit and a power electronic device, and comprises at least one controllable electronic driving device, such as a thyristor, a transistor, a field effect transistor, a controllable silicon, a relay and the like. For example: touch switch, inductive switch, acoustic control switch.

Optionally, the control system 105 is further connected to the above-mentioned switching device, and can control the switching device to be turned on or off to control the coil driving circuit 104 to provide the energizing current for the at least one coil 103.

In this embodiment, the coil driving circuit 104 is not limited, and any circuit structure that can supply an energizing current to at least one coil 103 is applicable to the embodiments of the present application. The embodiment of the present application provides an implementation structure of the coil driving circuit 104. As shown in fig. 1i, the coil driving circuit 104 includes: a signal amplifying circuit 1041, a fast switching circuit 1042, an LC tank 1043, and a freewheeling circuit 1044. The input end of the amplifying circuit 1041 is connected to the control signal output end of the control system 105, the output end of the signal amplifying circuit 1041 is connected to the fast switch circuit 1042, and the output end of the fast switch circuit 1042 is connected to the LC tank 1043; the output end of the LC tank 1043 is connected to the input end of the freewheel circuit 1044, and the output end of the freewheel circuit 1044 is connected to the coil 103 and the switching device.

As shown in fig. 1i, the signal amplification circuit 1041 mainly includes: a transistor Q3; the control signal output end of the control system 105 is connected to the base electrode of the triode Q3 through a resistor R3, and the base electrode of the triode Q3 is grounded through a resistor R4; the emitter of the transistor Q3 is grounded, and the collector of the transistor Q3 is connected to the base of the transistor Q1 in the fast switch circuit 1042 through a resistor R2. The control signal output by the control system 105 is amplified by a transistor Q3 and sent to the fast switch circuit 1042.

As shown in fig. 1i, the fast switch circuit 1042 mainly includes: a triode Q1, a diode D1 and a PMOS transistor Q2; the emitter of the triode Q1 is connected with a power supply, the base of the triode Q1 is connected with the power supply through a circuit R1, and the emitter of the triode Q1 is connected with the grid of a PMOS tube Q2; the diode D1 is connected in series between the emitter and the base of the triode Q1, and the anode of the diode D1 is connected with the emitter of the triode Q1; the source of the PMOS transistor is connected to the power supply, and the drain is connected to the first end of the inductor L2 in the LC tank 1043.

Due to the manufacturing process of an IC Chip (Integrated Circuit Chip), a parasitic capacitor exists between the gate (G pole) and the source (S pole) of the PMOS transistor Q2, and the parasitic capacitor stores electricity each time power is turned on, and cannot discharge electricity quickly after power is turned off. Alternatively, the control system 105 may include a Pulse Width Modulation (PWM) circuit, and send a control signal through the PWM circuit, if the frequency of the PWM circuit changes rapidly, the PMOS transistor Q2 generates heat rapidly and may damage the device, and the fast switch circuit 1042 provides a discharge circuit between the G pole and the S pole of the PMOS transistor Q2, which may timely release the charge of the parasitic capacitance between the G pole and the S pole of the PMOS transistor Q2 and avoid the device from being damaged.

As shown in fig. 1i, the LC tank 1043 mainly includes: an inductor L2, a polar capacitor EC1 and a capacitor C1; the polar capacitor EC1 is connected in parallel with the capacitor C1, the positive electrode of the polar capacitor EC1 is connected with the second end of the inductor L2, and the negative electrode of the polar capacitor EC1 is grounded; the diode D2 is connected between the first end of the inductor L2 and the ground in a reverse manner, i.e., the anode of the diode D2 is grounded. The polar capacitor EC1 is connected in parallel with the capacitor C1 and then connected to the first end of the inductor L1 in the freewheeling circuit 1044. The inductor L2 and the capacitor C1 in the LC tank 1043 are energy storage electronic components. The LC tank 1043 functions as: small energy cells are "combined" into a continuous energy. This has the advantage of allowing the control system 105 to provide any voltage signal, for example, the control system 105 can provide a 30V voltage signal, and the 30V voltage signal can become any voltage value between 0 and 30V after passing through the LC tank 1043.

In an alternative embodiment, control system 105 includes a PWM circuit, and control system 105 may output a series of PWM pulse signals as control signals via the PWM circuit. The voltage signal is understood to be an "energy", and the PWM circuit functions to cut large energy into small energy units that are intermittent in blocks. In this alternative embodiment, the PWM pulse signals are "combined" into continuous energy through the LC tank 1043 and provided to the coil 103 through the freewheel 1044.

As shown in fig. 1i, the freewheeling circuit 1044 mainly includes: a transistor Q4 and a diode D3; the second end of the inductor L1 is connected with the collector of the triode Q4, the cathode of the diode D4 is connected with the collector of the triode Q4, and the anode of the diode D4 is connected with the emitter of the triode Q4 and is grounded through the resistor R7; the base electrode of the triode Q4 is grounded after passing through the resistor R6 and is connected with the switching device after passing through the resistor R5; an output end is led out between an emitter of the triode Q4 and the resistor R7, and the output end is used for being connected with the coil 103. In the freewheeling circuit 1044, the current in the inductor L1 may not change abruptly, otherwise a large back electromotive force may be generated, and the electronic components may be damaged. Therefore, after power failure, a closed loop is needed to release current on the inductor L1, and the diode D3 is a freewheeling diode, so that charges of the inductor can be well released, and thus, electronic components are prevented from being damaged.

In the coil driving circuit 104 shown in fig. 1i, the control system 105 outputs a control signal, the transistor Q3 is turned on, the control signal is amplified by the transistor Q3 and enters the LC tank after passing through the transistor Q1 and the PMOS transistor Q2, the LC tank adapts the signal and sends the signal to the inductor L1, and the signal is amplified by the transistor Q4 and then output to the coil 103, so that the purpose of electrifying the coil 103 is achieved.

Scenario implementation example:

in a barber shop or a home environment, when a barber or a user uses a hair dryer, the hair dryer needs to be curled and shaped by using the air dispersing nozzle, at the moment, a switch on the hair dryer can be pressed, the switch is closed, at the moment, a control system of the hair dryer can control a coil driving circuit to electrify a coil on an air duct, electromagnetic force can be generated after the coil is electrified, the air dispersing nozzle is slightly close to the air duct, and at the moment, the air dispersing nozzle is adsorbed and connected to the air duct; the hairdresser or user can then use the air dispersing nozzle to blow the hair to achieve the hair curling and styling effect. After the use, the switch of hair-dryer can be pressed once more to haircut person or user, and the switch disconnection, and the control system of hair-dryer can control coil drive circuit and stop the coil power supply for on the dryer this moment, and the coil disconnection back, the electromagnetic force disappears, and the scattered tuyere drops from the dryer by oneself, reaches the purpose of dismantling.

The hair drier provided by the embodiment of the application can support various types of air nozzles, and therefore the hair drier of the embodiment can not only adopt an electromagnetic adsorption mode to adsorb the air nozzles, but also can identify the types of different air nozzles. The implementation of the blower in which the type of the tuyere can be identified can be described in the following embodiments.

Figure 2a is a schematic diagram of another blower according to an exemplary embodiment of the present application. As shown in fig. 2a, the hair dryer 100 includes, in addition to the structure described in the foregoing embodiment, an identification circuit 106 provided on the body; the identification circuit 106 can identify the type of the air nozzle which is connected by the air cylinder in an adsorption way when the air cylinder is connected with the air nozzle in an adsorption way. After the type of the air nozzle connected with the air outlet cylinder in an adsorption mode is identified, different control parameters can be provided for different types of air nozzles, so that different air speed and air temperature can be provided for users.

In this embodiment, the implementation structure of the identification circuit 106 is not limited, and any circuit structure that can identify the type of the air nozzle that is connected to the air duct in an adsorption manner when the air duct is connected to the air nozzle in an adsorption manner is suitable for the embodiment of the present application. The signals of the air duct adsorption connection air nozzle can be provided to the identification circuit 106 by the air duct, the control system and the like, and the identification circuit 106 only needs to identify the type. Besides, the signals of the air duct adsorption connection air nozzles can also be sensed by the identification circuit 106, that is, the air duct adsorption connection air nozzles need to be sensed firstly, and then the types of the air nozzles adsorbed and connected by the air duct are identified.

Based on the above, as shown in fig. 2b, one implementation structure of the identification circuit 106 includes: a sensing device 21b and an auxiliary circuit 22 b; the sensing device 21b is arranged on the air duct and is used for sensing whether the air duct is adsorbed and connected with the air nozzle or not; when the sensing device 21b senses that the air duct is connected with the air nozzle in an adsorption manner, an electric signal for identifying the air nozzle is output to the control system 105 of the air blower through the auxiliary circuit 22 b. The control system 105 is used for identifying the type of the air nozzle which is connected with the air duct in an adsorption way according to the electric signal; wherein the different types of nozzles generate different electrical signals. The difference of the electrical signals herein may refer to different magnitudes of the electrical signals, different numbers of the electrical signals, or different magnitudes and numbers of the electrical signals.

In this embodiment, the operation principle of the sensing device is not limited, and the sensing device may be a contact switch, a capacitance and magnetic field sensor, and the like. The implementation of the sensing device will vary based on the implementation; accordingly, the implementation structure of the auxiliary circuit may be different. The following examples illustrate:

in an optional embodiment, the sensing device comprises at least one contact switch, and the at least one contact switch is distributed at different positions of the air duct; wherein each contact switch can be closed when touched by the tuyere, and an electric signal can be output to the control system through the auxiliary circuit. The specific form of the contact switch is shown in fig. 2 c. In fig. 2c, one contact switch is shown, but not limited to one. In this embodiment, different types of nozzles have different structures, and the positions and/or the number of the contact switches which can be touched when the nozzles are connected with the air duct are different.

Wherein the control system is specifically configured to: identifying the location and/or number of contact switches that generated the electrical signal; and inquiring the mapping relation between the preset switch positions and the preset number and the type of the air nozzle according to the positions and/or the number of the contact switches generating the electric signals to obtain the type of the air nozzle connected with the air cylinder in an adsorption manner.

Alternatively, when the sensing device is a contact switch, a circuit structure of its corresponding auxiliary circuit is shown in fig. 2d, and includes: a resistor R11, a resistor R21 and a capacitor C2; one end of the resistor R11 is connected with the first end of the contact switch, and the other end of the resistor R11 is connected with the power supply; the second end of the contact switch is grounded; the first end of the contact switch is further connected with one end of a resistor R21, the other end of the resistor R21 is connected with the capacitor C2 and then grounded, wherein the other end of the resistor R21 is an output end of the auxiliary circuit and is connected with the control system 105. When the contact switch is closed, the resistor R21 and the capacitor C2 are short-circuited, and the output terminal outputs a low level signal to the control system 105; in the event that the contact switch is not closed, the output may output a high signal to the control system 105. The control system 105 may sense whether the air nozzle is connected to the air duct according to the transition of the level signal, further may identify the position and/or the number of the contact switches generating the low level signal according to the number and the source of the low level signal, and further query the mapping relationship between the preset switch position, the number and the air nozzle type according to the position and/or the number of the contact switches generating the low level signal, to obtain the type of the air nozzle connected to the air duct in an adsorbing manner.

In an alternative embodiment, the sensing device is a magnetic field sensor; the magnetic field sensor can output the same number of electric signals to the control system through the auxiliary circuit according to the number of the magnets arranged on the air nozzle when the air nozzle with the magnets is close to or contacts with the air cylinder. For example, the magnetic field sensor may be a hall sensor, but is not limited thereto. Assuming that one metal strip is present on the tuyere, one signal is generated, and two signals are generated if two metal strips are present on the tuyere.

In this embodiment, the number of metal components required on different nozzles is different, and the type of nozzle and the number of electrical signals that the nozzle can trigger are stored in the control system in advance. Based on the above, for the control system, the mapping relationship between the preset signal quantity and the type of the air nozzle can be specifically inquired according to the quantity of the electric signals, so as to obtain the type of the air nozzle which is connected with the air duct in an adsorption manner.

Alternatively, when the sensing device is a magnetic field sensor, such as a hall sensor, a circuit structure of its corresponding auxiliary circuit is shown in fig. 2e, and includes: a capacitor C3, a capacitor C4 and a resistor R12; the capacitor C3 is connected between the power supply end of the Hall sensor and the ground, and meanwhile, the power supply end of the Hall sensor is connected with the power supply; the output end of the Hall sensor is connected with a power supply through a resistor R12, and meanwhile, a capacitor C4 is connected between the output end of the Hall sensor and the ground; the output of the hall sensor is connected to the control system 105. When the hall sensor senses a magnetic field signal, the hall sensor converts the magnetic field signal into an electrical signal and transmits the electrical signal to the control system 105 through an output end of the hall sensor.

In an optional embodiment, the sensing device is a first metal component arranged on the air duct; the first metal component can form a capacitance signal with the second metal component when the air nozzle with the second metal component is close to the air duct; the capacitance signal is converted into an electric signal by the auxiliary circuit and then output to the control system.

Alternatively, the first metal component may be the at least one coil and the second metal component may be a metal strip. After the power is switched on, when the air nozzle is close to the air duct, the coil on the air duct is used as an electrode to form a capacitor with the metal electrode on the air nozzle; when the tuyere is removed, the metal electrode does not exist, and the induction capacitor disappears. The first metal component can also be a metal component which is arranged on the wind tube separately from the at least one coil, and can be a closed-loop metal strip or a segmented metal strip, for example. In this embodiment, the area, size and/or shape of the second metal component is different on different types of tuyeres; the second metal component has different area, size and/or shape, so that the capacitance signal between the second metal component and the first metal component is different, and the generated electric signal has different size. And a mapping relation between the size of the electric signal which can be triggered and generated by the second metal component on the different types of the air nozzles and the type of the air nozzles is pre-established and stored in the control system. Based on the method, the control system can specifically inquire the mapping relation between the preset signal size and the air nozzle type according to the size of the electric signal, and obtain the type of the air nozzle connected with the air cylinder in an adsorption manner.

Further optionally, after the type of the air nozzle connected with the air duct in an adsorption manner is obtained, the control system can also determine blowing parameters according to the type of the air nozzle; and controlling the blower to perform blowing operation according to the blowing parameters. For example, when the air nozzle is an air collecting nozzle, the control system of the air duct provides higher air temperature and air speed according to the blowing parameters after identifying, and smooth hair straightening is made; when the air nozzle is a dispersing air nozzle, the control system of the air cylinder recognizes the air nozzle, provides lower air temperature and air speed according to blowing parameters, and creates abundant curly hair.

Optionally, in the case of sensing whether the air nozzle is connected to the air duct based on the inductive capacitor, the auxiliary circuit may be a conversion circuit, configured to convert the capacitor signal into a current signal, and output the current signal to the control system; the input end of the conversion circuit is connected with the second metal component, and the output end of the conversion circuit is connected with the control system. The operating principle of the conversion circuit is similar to that of the operational amplifier circuit shown in fig. 2 f. In FIG. 2f, Cx is the reference capacitance, Ci is the induced capacitance between the tuyere and the wind tube, Ui is the operating voltage of the switching circuit, and Uo represents the output

Giving an electrical signal to the control system 105. The working principle of the conversion circuit is shown as formula (1):

as can be seen from equation (1), a change in Ci results in a change in the output voltage Uo, so that the control system 105 can determine whether a nozzle is connected to the wind tunnel and what type of nozzle is connected.

In the above embodiment, after the blower is powered on, the coil in the air duct generates electromagnetic force, so that the air nozzle with the metal component can be adsorbed, after the air nozzle is adsorbed by the air duct, the air nozzle can be identified through the sensing component, and based on different types of sensing devices, different identification modes and different generated electric signals. The control system of the blower is stored with a preset mapping relation between electric signals and types of air nozzles, and the air nozzles of different types are identified according to different electric signals. After the air nozzles are identified, the control system of the hair drier can also determine blowing parameters according to the types of the air nozzles, and further control the hair drier to perform blowing operation according to the blowing parameters. The blowing parameters may include, but are not limited to, a blowing temperature, a wind speed, and the like.

It is noted that the control system in the embodiments of the present application may be, but is not limited to: a CPU, GPU or MCU.

Figure 3a is a schematic diagram of a further blower according to an exemplary embodiment of the present application. As shown in figure 3a, a hair dryer 300 comprises: the air duct comprises a body 301, wherein the body 301 comprises an air duct 302, and the air duct 302 can be connected with an air nozzle; the machine body 301 is further provided with an identification circuit 303, and the identification circuit 303 can identify the type of the air nozzle connected with the air duct.

In this embodiment, the implementation structure of the identification circuit 303 is not limited, and any circuit structure that can identify the type of the air nozzle that is connected to the air duct 302 by suction when the air duct 302 is connected to the air nozzle by suction is suitable for the embodiment of the present application. The signals of the air duct 302 for absorbing and connecting the air nozzle can be provided to the identification circuit 303 by the air duct 302, the control system 304 and the like, and the identification circuit 303 only needs to perform type identification. In addition, the signals of the air duct 302 for suction connection with the air nozzle can also be sensed by the identification circuit 303, that is, the air duct 302 needs to be sensed for suction connection with the air nozzle first, and then the type of the air nozzle sucked and connected by the air duct 302 is identified.

Based on the above, as shown in fig. 3b, one implementation structure of the identification circuit 303 includes: the sensing device 31b is arranged on the air duct 301 and is used for sensing whether the air duct adsorbs and is connected with an air nozzle or not; when sensing that the air duct is connected with the air nozzle, the sensing device 31b outputs an electric signal for identifying the air nozzle to the control system 304 of the air blower through the auxiliary circuit 32 b. The control system 304 is used for identifying the type of the adsorbed air nozzle according to the electric signal; wherein the different types of nozzles generate different electrical signals. The difference of the electrical signals herein may refer to different magnitudes of the electrical signals, different numbers of the electrical signals, or different magnitudes and numbers of the electrical signals.

In this embodiment, the operation principle of the sensing device is not limited, and the sensing device may be a contact switch, a capacitor, a magnetic field sensor, or the like. The implementation of the sensing device will vary based on the implementation; accordingly, the implementation of the auxiliary circuit may vary. The following examples illustrate:

in an optional embodiment, the sensing device comprises at least one contact switch, and the at least one contact switch is distributed at different positions of the air duct; wherein each contact switch is closable when touched by the tuyere to output an electrical signal to the control system through the auxiliary circuit. Different types of air nozzles have different structures, and when the air nozzles are connected with the air duct, the positions and/or the number of the contact switches which can be touched are different. The specific form of the contact switch is referred to the above embodiments, and is not described herein again.

Alternatively, in case the sensing device is at least one contact switch, one implementation of the auxiliary circuit is shown in fig. 2 d. For the related description of the contact switch and the auxiliary circuit, reference may be made to the foregoing embodiments, and details are not repeated herein.

In an alternative embodiment, the sensing device is a magnetic field sensor; the magnetic field sensor can output the same number of electric signals to the control system through the auxiliary circuit according to the number of the magnets arranged on the air nozzle when the air nozzle with the magnets is close to or contacts the air cylinder. For example, the magnetic field sensor may be a hall sensor, but is not limited thereto. Assuming that one metal strip is present on the tuyere, one signal is generated, and two signals are generated if two metal strips are present on the tuyere. In case the sensing device is a magnetic field sensor, one implementation of the auxiliary circuit is shown in fig. 2 e. For a description of the magnetic field sensor and the auxiliary circuit, reference may be made to the foregoing embodiments, which are not described in detail herein.

In an optional embodiment, the sensing device is a first metal component arranged on the air duct; the first metal component can form a capacitance signal with the second metal component when the air nozzle with the second metal component is close to or contacts the air duct, and the capacitance signal is converted into an electric signal through the auxiliary circuit and then output to the control system. For the detailed embodiments of the first metal component and the second metal component, please refer to the foregoing, which is not described herein again.

Fig. 4a is a schematic structural diagram of a tuyere according to an exemplary embodiment of the present application. As shown in fig. 4a, the nozzle body 400 is provided with at least one metal component or magnet 401, and the nozzle can be attached to the air duct of the hair dryer by the electromagnetic force.

The tuyere is a fitting for assisting the styling of a hairdryer, and includes various types, for example: the wind collecting nozzle and the wind dispersing nozzle have the advantages that the wind speed is improved, and when wind enters the narrow wind channel from the wider wind channel, the wind is more concentrated, and the modeling is more accurate. The effect of wind dispersing nozzle is to reduce the wind speed, and when wind got into than wider wind channel from narrower wind channel, the impact force reduced can not blow indiscriminate hair, is used for blowing the curly hair mostly.

The tuyere body 400 is provided with at least one metal component or magnet 401, and in the embodiment of the present application, the form of the at least one metal component or magnet 401 is not limited, and any form that allows the tuyere to be attached to the dryer duct is applicable to the embodiment of the present application. The form of the ring-shaped structure comprises a closed ring or a sectional type, a circular ring, a circular arc or a straight line; in a preferred embodiment of the present application, at least one metal component or magnet 401 is a segmented metal ring.

In the embodiment of the present application, the position of the at least one metal component or magnet 401 on the tuyere body 400 is not limited as long as the at least one metal component or magnet 401 can be attached to the air duct of the blower by suction. Specifically, the position of the at least one metal component or magnet 401 on the tuyere body 400 corresponds to the position of the at least one coil on the air duct.

In an alternative embodiment, at least one metal component or magnet is disposed on the end face, outer sidewall, and/or inner sidewall of the first port. Wherein, metal component or magnet 401 sets up on terminal surface, lateral wall and/or inside wall, and when being close to the dryer, metal component or magnet 401 can more press close to the coil on the dryer, and the electromagnetic force absorption that produces after the easier coil circular telegram is connected to on the dryer. The first port is a port on the side of the air nozzle body 400 facing the air duct when the air nozzle body 400 is connected to the air duct.

In an optional embodiment, in order to fix at least one metal component or magnet 401 more conveniently and reduce the influence of the metal component or magnet 401 on the appearance of the tuyere, a groove may be formed in a position on the tuyere body 400 where the metal component and magnet 401 need to be disposed, and the metal component and magnet 401 may be embedded in the groove. If at least one metal component and a magnet 401 are required to be arranged on the end face, the outer side wall and/or the inner side wall of the first port, at least one groove can be formed on the end face, the outer side wall and/or the inner side wall of the first port, and at least one metal component or a magnet 401 is embedded in the at least one groove. Fig. 4b shows a schematic view of the metal component on the tuyere being located in a groove on the end face of the first port. In fig. 4b, the dashed square boxes indicate grooves.

Fig. 5 is a schematic flow chart of a blowing control method according to an exemplary embodiment of the present application. As shown in fig. 5, the method includes:

51. identifying a type of a tuyere connected with a blower duct;

52. determining blowing parameters according to the type of the air nozzle;

53. and controlling the blower to perform blowing operation according to the blowing parameters.

In the embodiments of the present application, the blower may have a plurality of accessories, for example, may include a plurality of types of nozzles. Wherein, the tuyere is a fitting part for assisting the modeling of the blower, and can include but is not limited to: a wind collecting nozzle and a wind distributing nozzle. The blowing parameters corresponding to different air nozzles are different. In this embodiment, can discern the tuyere type of connection on the dryer, after discerning the tuyere type, can provide different parameters of blowing to the tuyere intelligence of different grade type, can provide different wind speed wind temperature for the user like this, improve user and use experience.

Alternatively, in step 51, the type of the air nozzle connected to the air duct may be identified by an identification circuit provided on the blower. The specific mode for identifying the type of the tuyere is different according to different implementation structures of the identification circuit. The following describes an exemplary manner of identifying the type of the tuyere in conjunction with several specific structures of the identification circuit as follows:

in an alternative embodiment, the identification circuit comprises: the air duct comprises at least one contact switch arranged on the air duct, and each contact switch can generate an electric signal when touched by the air nozzle. Based on this, identifying the type of air nozzle connected to the blower barrel includes: identifying the location and/or number of contact switches that generated the electrical signal; and inquiring the mapping relation between the preset switch positions and the preset number and the type of the air nozzle according to the positions and/or the number of the contact switches generating the electric signals to obtain the type of the air nozzle.

In an alternative embodiment, the air nozzle is provided with a magnet, and the identification circuit comprises a magnetic field sensor arranged on the air duct; the magnetic field sensor can generate the same number of electric signals according to the number of the magnets carried by the air nozzle when the air nozzle is close to or contacts with the air duct. Based on this, identifying the type of air nozzle connected to the blower barrel includes: counting the number of electric signals generated by the magnetic field sensor; and inquiring the mapping relation between the preset signal quantity and the type of the air nozzle according to the quantity of the electric signals generated by the magnetic field sensor to obtain the type of the air nozzle.

In this embodiment, the number of metal components required on different nozzles is different, and the type of nozzle and the number of electrical signals that the nozzle can trigger are stored in the control system in advance. Based on the method, the blower can inquire the mapping relation between the preset signal quantity and the air nozzle type according to the quantity of the electric signals to obtain the type of the air nozzle connected with the air cylinder in an adsorption mode.

In an optional embodiment, the identification circuit comprises a first metal component arranged on the air duct, and correspondingly, a second metal component is arranged on the air nozzle; the first metal component can form a capacitance signal with the second metal component when the air nozzle with the second metal component is close to the air duct. Based on the above, the type of tuyere that the discernment is connected with the hair-dryer section of thick bamboo includes: acquiring an electrical signal converted from the capacitance signal; and inquiring the mapping relation between the preset signal size and the type of the air nozzle according to the size of the electric signal to obtain the type of the air nozzle.

Furthermore, after the type of the air nozzle connected with the air cylinder of the blower is identified, the blowing parameters can be determined according to the type of the air nozzle; and controlling the blower to perform blowing operation according to the blowing parameters. For example, when the air nozzle is an air collecting nozzle, the control system of the air duct provides higher air temperature and air speed according to the blowing parameters after identifying, and smooth hair straightening is made; when the air nozzle is a dispersing air nozzle, the control system of the air cylinder recognizes the air nozzle, provides lower air temperature and air speed according to blowing parameters, and creates abundant curly hair. Therefore, by adopting the blowing control method provided by the embodiment, different wind speeds and wind temperatures can be provided for users, the blowing requirements of the users are met, and the user experience is improved.

It should be noted that the execution subjects of the steps of the methods provided in the above embodiments may be the same device, or different devices may be used as the execution subjects of the methods. For example, the execution subjects of steps 51 to 53 may be device a; for another example, the execution subject of

steps

51 and 52 may be device a, and the execution subject of step 53 may be device B; and so on.

In addition, in some of the flows described in the above embodiments and the drawings, a plurality of operations are included in a specific order, but it should be clearly understood that the operations may be executed out of the order presented herein or in parallel, and the sequence numbers of the operations, such as 51, 52, etc., are merely used for distinguishing different operations, and the sequence numbers do not represent any execution order per se. Additionally, the flows may include more or fewer operations, and the operations may be performed sequentially or in parallel. It should be noted that, the descriptions of "first", "second", etc. in this document are used for distinguishing different messages, devices, modules, etc., and do not represent a sequential order, nor limit the types of "first" and "second" to be different.

Accordingly, the present application also provides a computer readable storage medium storing a computer program, which when executed by one or more processors causes the one or more processors to implement the steps in the method embodiment shown in fig. 5.

The computer-readable storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

Claims

1. A hair dryer, comprising: a body; the machine body comprises an air duct, and at least one coil is arranged on the air duct; the at least one coil generates electromagnetic force in a power-on state and can be attached to a tuyere with a metal component or a magnet.

2. The hair dryer of claim 1, wherein the at least one coil is disposed on an end face, an outer side wall and/or an inner side wall of the air outlet of the air duct in a dispersed manner.

3. The hair dryer of claim 2, wherein at least one groove is formed on the end surface, the outer side wall and/or the inner side wall of the air outlet of the air duct, and the at least one coil is embedded in the at least one groove.

4. The hair dryer of claim 3, wherein a fixing boss is provided at a bottom of each recess, and the coil embedded in the recess is fitted over the fixing boss.

5. The hair dryer of claim 2, wherein said at least one coil is uniformly distributed on an end face, an outer side wall and/or an inner side wall of said outlet.

6. The hair dryer of claim 1, wherein said at least one coil is connected in series, parallel, or series-parallel.

7. The hair dryer of claim 1, further comprising:

a coil driving circuit disposed on the body; the coil driving circuit is electrically connected with the at least one coil and used for providing energizing current for the at least one coil.

8. The blower of claim 7,

a switching device is arranged between the coil driving circuit and the at least one coil; the coil drive circuit communicates with the at least one coil when the switching device is closed; the control system of the hair dryer is connected with the switching device and can control the switching device to be switched on or switched off; the switching device is a mechanical switch or an electronic switch.

9. The hair dryer of any one of claims 1-8, further comprising: an identification circuit disposed on the body; the identification circuit can identify the type of the air nozzle which is connected with the air duct in an adsorption way when the air duct is connected with the air nozzle in an adsorption way.

10. The hair dryer of claim 9, wherein said identification circuit comprises: the sensing device is arranged on the air duct;

when the sensing device senses that the air duct is connected with the air nozzle in an adsorption manner, the sensing device outputs an electric signal for identifying the air nozzle to a control system of the blower through the auxiliary circuit;

the control system is used for identifying the type of the air nozzle which is connected with the air duct in an adsorption manner according to the electric signal; wherein the different types of nozzles generate different electrical signals.

11. The air nozzle is characterized in that at least one metal component or magnet is arranged on the air nozzle body, and the air nozzle can be adsorbed and connected to an air duct of a blower under the action of electromagnetic force.

12. The tuyere of claim 11, wherein the at least one metal component or magnet is disposed on an end face, an outer sidewall, and/or an inner sidewall of the first port; the first port is a port on the air nozzle body connected with the air duct.

13. The tuyere of claim 12, wherein at least one groove is formed in an end surface, an outer side wall or an inner side wall of the first port, and the at least one metal component or magnet is embedded in the at least one groove.

14. The tuyere of claim 11, wherein the at least one metal component or magnet comprises any one of: closed loop, segmented, circular arc, linear.

15. A hair dryer, comprising: a body; the machine body comprises an air duct, and the air duct can be connected with an air nozzle;

the machine body is also provided with an identification circuit, and the identification circuit can identify the type of the air nozzle connected with the air duct.

16. The hair dryer of claim 15, wherein said identification circuit comprises: the sensing device is arranged on the air duct;

when the sensing device senses that the air duct is connected with the air nozzle, an electric signal for identifying the air nozzle is output to a control system of the blower through the auxiliary circuit;

the control system is used for identifying the type of the adsorbed tuyere according to the electric signal; wherein the different types of nozzles generate different electrical signals.

17. An air blowing control method, characterized by comprising:

identifying a type of a tuyere connected with a blower duct;

determining blowing parameters according to the type of the air nozzle;

and controlling the blower to perform blowing operation according to the blowing parameters.

18. The method of claim 17, wherein the air duct is provided with at least one contact switch, each contact switch being capable of generating an electrical signal when touched by a tuyere;

the type of tuyere that discernment is connected with hair-dryer includes:

identifying the location and/or number of contact switches that generated the electrical signal;

and inquiring the mapping relation between the preset switch positions and the preset number and the type of the air nozzle according to the positions and/or the number of the contact switches generating the electric signals to obtain the type of the air nozzle.

19. The method of claim 17, wherein the tuyere is provided with a magnet, and a magnetic field sensor is arranged on the air duct; the magnetic field sensor can generate the same number of electric signals according to the number of the magnets carried by the air nozzle when the air nozzle is close to or contacted with the air duct;

the type of tuyere that discernment is connected with hair-dryer includes:

counting the number of the electric signals generated by the magnetic field sensor;

and inquiring the mapping relation between the preset signal quantity and the type of the air nozzle according to the quantity of the electric signals generated by the magnetic field sensor to obtain the type of the air nozzle.

20. The method of claim 17, wherein a first metal component is provided on the air duct and a second metal component is provided on the tuyere; the first metal component can form a capacitance signal with a second metal component when the air nozzle with the second metal component is close to the air duct;

the type of tuyere that discernment is connected with hair-dryer includes:

acquiring an electrical signal converted from the capacitance signal;

and inquiring the mapping relation between the preset signal size and the type of the air nozzle according to the size of the electric signal to obtain the type of the air nozzle.