Control circuit of spraying device of electric hair drier

Abstract

The utility model relates to the technical field of household appliances, in particular to a control circuit of a spraying device of an electric hair drier. According to the technical scheme, the device comprises a master controller, a motor control circuit, a spraying control circuit and a spraying control switch, the motor control circuit comprises a normal control circuit and a spraying low-speed control circuit, and the master controller is connected with a blowing motor of the electric hair drier through the motor control circuit. The main controller is electrically connected with the spraying device through the spraying control circuit; and the spraying control switch is used for triggering the spraying control circuit to be switched on and switching the motor control circuit from a normal control circuit to a spraying low-speed control circuit. The electric hair drier has the advantages that the rotating speed of the motor of the electric hair drier can be reduced and the wind speed can be reduced after a spraying control switch is pressed by utilizing the spraying low-speed control circuit, so that sprayed mist can effectively act on hair and cannot be blown away by high wind speed, and the spraying effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a control circuit of a hair dryer spray device. Background Art

[0002] In a hair dryer, the structure of a high-speed hair dryer is mainly characterized by its air inlet and outlet structure compared with a traditional hair dryer. The air inlet of a high-speed hair dryer is arranged at the bottom of the handle, and a high-speed blower is arranged in the handle to suck the air into the cylinder at the upper end of the handle. A corresponding air duct is arranged in the cylinder to blow the air out from the air outlet. Specifically, the air duct in the cylinder is annular, and the air outlet is also annular for blowing out high-speed wind. Therefore, a high-speed hair dryer can be hollowed out or sealed in the middle of the air outlet, and it does not participate in the air outlet. At present, a spray device is arranged in the middle of the air outlet of a high-speed hair dryer to spray aromatherapy spray, which acts on the hair together with the wind blown out from the air outlet, so that the hair has a fragrance. At present, when the spray device of a hair dryer is controlled to spray, only a spray switch is arranged. When the hair dryer is turned on, the spray device can be triggered to spray the aromatherapy spray by pressing the spray switch. When the hair dryer is in a high wind speed state, the aromatherapy spray sprayed by the spray device will be blown away and cannot accurately act on the hair, and there is a problem of poor spray effect. Utility Model Content

[0003] The utility model aims to provide a control circuit of a hair dryer spray device, and in particular to provide a control circuit of a spray device which can automatically reduce the wind speed to improve the spray effect after pressing the spray switch.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a control circuit of a hair dryer spray device, comprising a main controller, a motor control circuit, a spray control circuit and a spray control switch, the motor control circuit comprising a normal control circuit and a spray low-speed control circuit, the main controller is connected to the hair dryer's blowing motor through the motor control circuit, and the main controller is electrically connected to the spray device through the spray control circuit; the spray control switch is used to trigger the spray control circuit to be turned on and to switch the motor control circuit from the normal control circuit to the spray low-speed control circuit.

[0005] Furthermore, it also includes a time delay trigger circuit, and the main controller is connected to the spray control circuit via the time delay trigger circuit.

[0006] Furthermore, it also includes an intermittent conduction circuit, and the main controller is connected to the spray control circuit through the delay trigger circuit and the intermittent conduction circuit at the same time.

[0007] Specifically, the intermittent conduction circuit includes a pulse square wave output circuit and a trigger switch circuit. The pulse square wave output circuit is used to output a square wave pulse of a certain frequency to the trigger switch circuit to make the trigger switch circuit intermittently conductive. The trigger switch circuit is electrically connected to the spray control circuit.

[0008] The beneficial effect of the utility model is that by utilizing the spray low-speed control circuit, the rotation speed of the hair dryer motor can be reduced after pressing the spray control switch, and the wind speed is reduced, so that the spray can effectively act on the hair without being blown away by the higher wind speed, thereby improving the spray effect; at the same time, in conjunction with the delay trigger circuit and the intermittent conduction circuit, the control effect of the spray can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Attached Figure 1 4 is a connection schematic diagram of a control circuit of an electric hair dryer spray device in an embodiment. DETAILED DESCRIPTION

[0010] Example 1, reference Figure 1 A control circuit of a hair dryer spray device comprises a main controller 1, a motor control circuit 2, a spray control circuit 3 and a spray control switch 4, wherein the motor control circuit 2 comprises a normal control circuit 21 and a spray low-speed control circuit 22, the main controller 1 is connected to a motor 23 in the hair dryer through the motor control circuit 2, and the main controller 1 is electrically connected to a spray device 31 through the spray control circuit 3; the spray control switch 4 is used to trigger the spray control circuit 3 to be turned on and to switch the motor control circuit 2 from the normal control circuit 21 to the spray low-speed control circuit 22.

[0011] In this embodiment, the main controller 1 is used to control the hair dryer as a whole. The main controller 1 can adopt a conventional single-chip microcomputer control chip. When the spray control switch 4 is not pressed, the main controller 1 performs conventional control on the motor 23 through the normal control circuit 21, wherein the normal control circuit 21 is a control circuit conventionally used in ordinary hair dryers; when the spray control switch 4 is pressed, the spray control circuit 3 is triggered to be turned on, and at the same time, the main controller 1 switches the normal control circuit 21 to the spray low-speed control circuit 22. The spray low-speed control circuit 22 is used to control the motor 23 to rotate at a low speed, thereby reducing the wind speed, avoiding the aromatherapy spray being blown away by high wind speed after the spray device sprays out the aromatherapy spray, and improving the spray effect.

[0012] In a further embodiment, a delay trigger circuit 5 is further included, and the main controller 1 is connected to the spray control circuit 3 via the delay trigger circuit 5. By setting the delay trigger circuit 5, after pressing the spray control switch 4, the spray device can be turned on for a delay, ensuring that the wind speed of the hair dryer is reduced before the spray device is turned on to spray the aromatherapy spray.

[0013] In addition, in a further embodiment, an intermittent conduction circuit 6 is also included, and the main controller 1 is connected to the spray control circuit 3 through the delay trigger circuit 5 and the intermittent conduction circuit 6. By using the intermittent conduction circuit 6, the spray device can be intermittently started, and the amount of spray can be effectively controlled to avoid excessive spraying and wasting the aromatherapy solution in the spray device. Among them, the intermittent conduction circuit 6 includes a pulse square wave output circuit and a trigger switch circuit. The pulse square wave output circuit is used to output a square wave pulse of a certain frequency to the trigger switch circuit to make the trigger switch circuit intermittently conductive, and the trigger switch circuit is electrically connected to the spray control circuit 3; the pulse square wave output circuit can adopt a conventional pulse square wave output circuit, and the trigger switch circuit can adopt a triode switch circuit.

[0014] Of course, the above are only preferred implementations of the present utility model, and are not intended to limit the scope of use of the present utility model. Therefore, any equivalent changes made to the principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A control circuit for a hair dryer spray device, characterized in that: It includes a main controller, a motor control circuit, a spray control circuit and a spray control switch. The motor control circuit includes a normal control circuit and a spray low-speed control circuit. The main controller is connected to the blowing motor of the hair dryer through the motor control circuit, and the main controller is electrically connected to the spray device through the spray control circuit; the spray control switch is used to trigger the spray control circuit to be turned on and switch the motor control circuit from the normal control circuit to the spray low-speed control circuit.

2. The control circuit of a hair dryer spray device according to claim 1, characterized in that: It also includes a time delay trigger circuit, and the main controller is connected to the spray control circuit via the time delay trigger circuit.

3. The control circuit of the hair dryer spray device according to claim 1, characterized in that: It also includes an intermittent conduction circuit, and the main controller is connected to the spray control circuit through the delay trigger circuit and the intermittent conduction circuit at the same time.

4. The control circuit of the hair dryer spray device according to claim 3, characterized in that: The intermittent conduction circuit includes a pulse square wave output circuit and a trigger switch circuit. The pulse square wave output circuit is used to output a square wave pulse of a certain frequency to the trigger switch circuit to make the trigger switch circuit intermittently conductive. The trigger switch circuit is electrically connected to the spray control circuit.

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