CN-121976973-A - Hair drier

Abstract

The application discloses a blower which comprises a shell, a blower assembly, a circuit board assembly and a circuit board assembly, wherein an air inlet part and an air outlet part are formed in the shell, a main air duct is formed between the air inlet part and the air outlet part, the blower assembly is contained in the shell, the circuit board assembly is electrically connected with the blower assembly to control the blower assembly, at least part of the circuit board assembly is positioned behind the air inlet part in the front-back direction, and at least part of the circuit board assembly is arranged on a flow path of air flow in the main air duct. The application can improve the compactness of the blower and the heat radiation performance of the circuit board assembly.

Inventors

• LI ZHENGYOU
• ZHAO XIAOZHE

Assignees

• 南京泉峰科技有限公司

Dates

Publication Date

20260505

Application Date

20260325

Claims (10)

1. 1. A hair dryer, comprising: a housing (1) provided with an air inlet part (11) and an air outlet part (12), wherein a main air duct (13) is formed between the air inlet part (11) and the air outlet part (12); A fan assembly (2) accommodated in the housing (1); a circuit board assembly (3) electrically connected with the fan assembly (2) to control the fan assembly (2); it is characterized in that the method comprises the steps of, At least part of the circuit board assembly (3) is positioned behind the air inlet part (11) in the front-rear direction, and at least part of the circuit board assembly (3) is arranged on the flow path of the air flow in the main air duct (13).
2. 2. A hair dryer according to claim 1, characterized in that the rear end of the main duct (13) has a duct (131), the circuit board assembly (3) being located behind the duct (131).
3. 3. The hair dryer according to claim 2, characterized in that at least part of the circuit board assembly (3) is located above the duct (131).
4. 4. A hair dryer according to claim 1, characterized in that the housing (1) is provided with a grip handle (4), the circuit board assembly (3) being arranged at an acute angle with respect to the grip handle (4).
5. 5. A hair dryer according to claim 1, characterized in that the circuit board assembly (3) is arranged obliquely.
6. 6. A hair dryer according to claim 1, characterized in that the circuit board assembly (3) comprises a control circuit (31) for controlling the fan assembly (2).
7. 7. A hair dryer according to claim 1, characterized in that the housing (1) further comprises a battery coupling (14), the battery coupling (14) being for detachably mounting a battery pack.
8. 8. A hair dryer according to claim 7, characterized in that the housing (1) is provided with a grip handle (4), the circuit board assembly (3) and the battery coupling (14) being provided on the same side of the grip handle (4).
9. 9. A hair dryer according to claim 8, characterized in that an operating member (5) is arranged on the other side of the grip handle (4), said operating member (5) being at least operable for activating the fan assembly (2).
10. 10. A hair dryer according to claim 1, characterized in that the housing (1) is provided with a grip handle (4), the circuit board assembly (3) being provided at a connection (15) of the housing (1) to the grip handle (4).

Description

Hair drier Technical Field The application relates to a power tool, in particular to a blower. Background In daily life, power tools play a very important role. Power tools include, but are not limited to, electric hand drills, impact wrenches, impact screwdrivers, angle grinders, chain saws, circular saws, blowers, and the like. The electric hand drill and the impact drill can be configured with drills of different diameters to drill holes on an object, the impact wrench is used for screwing bolts and nuts, the impact screwdriver is used for screwing first screws off or screwing first screws on, and the like, the angle grinder can grind and cut the object, the chain saw and the circular saw can be used for woodworking, the blower can be used as a garden tool to clean fallen leaves, or the blower can be used as a cleaning tool to clean garbage. The working efficiency can be improved by adopting the power tool, and the labor intensity is reduced. In the related art, the layout of the circuit board of the blower in the shell is mainly positioned in the area above the motor, and the layout mode occupies more space in terms of structure, so that the whole structure of the blower is relatively bulky, and in addition, in the aspect of heat dissipation, the cold air inlet space is relatively limited, so that the heat dissipation performance of the circuit board is affected. This section provides background information related to the application, which is not necessarily prior art. Disclosure of Invention It is an object of the present application to solve or at least alleviate some or all of the above problems, to enable increased compactness of the blower and to enable increased heat dissipation to the circuit board assembly. To achieve the purpose, the invention adopts the following technical scheme: A blower comprises a shell, a fan assembly, a circuit board assembly and an air flow path, wherein the shell is provided with an air inlet part and an air outlet part, a main air duct is formed between the air inlet part and the air outlet part, the fan assembly is accommodated in the shell, the circuit board assembly is electrically connected with the fan assembly to control the fan assembly, at least part of the circuit board assembly is positioned behind the air inlet part in the front-back direction, and at least part of the circuit board assembly is arranged on the air flow path in the main air duct. In some embodiments, the rear end of the main duct has a duct, and the circuit board assembly is located behind the duct. In some embodiments, at least a portion of the circuit board assembly is located above the duct. In some embodiments, a grip handle is provided on the housing, and the circuit board assembly is disposed at an acute angle relative to the grip handle. In some embodiments, the circuit board assembly is disposed at an incline. In some embodiments, the circuit board assembly includes control circuitry for controlling the fan assembly. In some embodiments, the housing further comprises a battery interface for detachably mounting the battery pack. In some embodiments, the housing is provided with a grip handle, and the circuit board assembly and the battery interface are disposed on the same side of the grip handle. In some embodiments, an operating member is disposed on the other side of the grip handle, the operating member being at least operable to activate the fan assembly. In some embodiments, a holding handle is provided on the housing, and the circuit board assembly is provided at a connection portion of the housing to the holding handle. The application has the advantages that: According to the blower provided by the application, the main air duct is formed between the air inlet part and the air outlet part of the shell, the blower component is accommodated in the shell, at least part of the circuit board component is positioned behind the air inlet part, and at least part of the circuit board component is arranged on the air flow path in the main air duct. Through at least part of the circuit board assembly is arranged at the rear of the air inlet part, the space at the rear of the air inlet part can be fully utilized, the space occupied by the arranged circuit board assembly is reduced, and therefore the compactness of the blower structure is improved. At least part of the circuit board assembly is positioned on the flowing path of the air flow in the main air duct, so that the air flow can be utilized to cool the circuit board assembly, and the heat dissipation performance is improved. Drawings FIG. 1 is a schematic diagram of one embodiment of the present application; FIG. 2 is a front view of one embodiment of the present application; FIG. 3 is a schematic illustration of a portion of a housing removed in one embodiment of the application; FIG. 4 is a front view of an embodiment of the application with portions of the housing removed; fig. 5 is a cross-sectional view of one embodiment of