Portable fan

Abstract

A portable fan includes a housing body, a fan assembly, a power supply assembly and a first clamping device. The housing body is provided with an accommodating chamber, an air inlet, and an air outlet; the air outlet, at least part of the accommodating chamber and the air inlet are communicated to each other in sequence along a first preset direction. The fan assembly is located within the accommodating chamber and between the air inlet and the air outlet, and is configured to drive an airflow to flow from the air inlet to the air outlet. The power supply assembly is located within the accommodating chamber, the power supply assembly is offset from a projection of the fan assembly along the first preset direction, and the power supply assembly is electrically connected to the fan assembly to supply power to the fan assembly.

What is claimed is: 
     
         1 . A portable fan, comprising:
 a housing body, wherein the housing body is provided with an accommodating chamber, an air inlet, and an air outlet; the air outlet, at least part of the accommodating chamber and the air inlet are communicated to each other in sequence;   a fan assembly, wherein the fan assembly is located within the accommodating chamber and between the air inlet and the air outlet, and is configured to drive an airflow to flow from the air inlet to the air outlet;   a power supply assembly, wherein the power supply assembly is located within the accommodating chamber, the power supply assembly is electrically connected to the fan assembly to supply power to the fan assembly; and   a first clamping device, wherein the first clamping device is connected to one side of the housing body, and is configured to form a clamping space with the housing body for clamping an external object, to fix the portable fan onto the external object;   the fan assembly comprises a motor, a fan blade and a fan shell, the motor and the fan blade are arranged in the fan shell, the fan shell comprises a plurality of air guide blades arranged in an annular manner on an airflow side of the fan blade and an annular wall structure located outside the plurality of air guide blades, and an inner diameter of at the least of the annular wall structure gradually decreases along the airflow direction.   
     
     
         2 . The portable fan according to  claim 1 , wherein the fan shell further comprises a sidewall structure, the plurality of air guide blades connects with an inner side of the sidewall structure, the air guide blades and the motor is located in the sidewall structure, and the plurality of air guide blades is located between the fan blade and the annular wall structure. 
     
     
         3 . The portable fan according to  claim 2 , wherein the fan shell further comprises a plurality of air outlet blades, and the plurality of air outlet blades are located on a side of the plurality of air guide blades opposite the fan blades. 
     
     
         4 . The portable fan according to  claim 3 , wherein the plurality of air outlet blades connect with an inner side of annular wall structure. 
     
     
         5 . The portable fan according to  claim 2 , wherein the sidewall structure comprises a gap, and a conducting wire connected to the motor passes through the gap and connects with a control assembly. 
     
     
         6 . The portable fan according to  claim 1 , wherein the fan shell further comprises a grille having a plurality of air inlet holes, the grille is located on an air inlet side of the fan shell, and an inner diameter of each air inlet hole ranges from 0.2 mm to mm. 
     
     
         7 . The portable fan according to  claim 6 , wherein the fan shell further comprises an air inlet cover, the grille is installed on an inner side of the air inlet cover, the air inlet cover is co on one end of grille opposite to an air outlet hood; the air inlet cover is annular, an outer side surface of one end of the sidewall structure is provided with a stepped groove, the air inlet cover is sleeved on the stepped groove, and an outer side surface of the air inlet cover is smoothly connected with an outer side surface of the sidewall structure. 
     
     
         8 . A portable fan, comprising:
 a housing body, wherein the housing body is provided with an accommodating chamber, an air inlet, and an air outlet; the air outlet, at least part of the accommodating chamber and the air inlet are communicated to each other in sequence;   a fan assembly, wherein the fan assembly is located within the accommodating chamber and between the air inlet and the air outlet, and is configured to drive an airflow to flow from the air inlet to the air outlet;   a power supply assembly, wherein the power supply assembly is located within the accommodating chamber, the power supply assembly is electrically connected to the fan assembly to supply power to the fan assembly; and   a first clamping device, wherein the first clamping device is connected to one side of the housing body, and is configured to form a clamping space with the housing body for clamping an external object, to fix the portable fan onto the external object;   wherein the fan assembly comprises a motor, a fan blade and a fan shell, the motor and the fan blade are arranged in the fan shell; the fan shell comprises a plurality of air guide blades arranged in an annular manner on an airflow side of the fan blade and a plurality of air outlet blades are located on a side of the plurality of air guide blades opposite the fan blades.   
     
     
         9 . The portable fan according to  claim 8 , wherein the fan shell further comprises a sidewall structure, the plurality of air guide blades connects with an inner side of the sidewall structure, the air guide blades and the motor is located in the sidewall structure, and the plurality of air guide blades is located between the fan blade and the annular wall structure. 
     
     
         10 . The portable fan according to  claim 9 , wherein the plurality of air outlet blades connect with a surface of a plurality of air guide blades opposite one side of the fan blades. 
     
     
         11 . The portable fan according to  claim 9 , wherein the sidewall structure comprises a gap, and a conducting wire connected to the motor passes through the gap and connects with a control assembly. 
     
     
         12 . A portable fan, comprising:
 a housing body, wherein the housing body is provided with an accommodating chamber;   a fan assembly, wherein the fan assembly is located within the accommodating chamber and between an air inlet and an air outlet, and is configured to drive an airflow to flow from the air inlet to the air outlet;   a power supply assembly, wherein the power supply assembly is located within the accommodating chamber, the power supply assembly is electrically connected to the fan assembly to supply power to the fan assembly; and   a first clamping device, wherein the first clamping device is connected to one side of the housing body, and is configured to form a clamping space with the housing body for clamping an external object, to fix the portable fan onto the external object;   wherein the housing body comprises a first portion and a second portion, the first portion and the second portion are arranged in sequence and cooperate to form the accommodating chamber, a plurality of first clamping members are arranged at an edge of the first portion, a plurality of second clamping members are arranged at an edge of the second portion;   the plurality of first clamping members and the plurality of second clamping members are fastened together to connect the first portion and the second portion, or the plurality of first clamping members and a plurality of third clamping members of a mounting shell are fastened, the plurality of second clamping members and a plurality of fourth clamping members are fastened, and the mounting shell, the first portion and the second portion are connected together.   
     
     
         13 . The portable fan according to  claim 12 , wherein the plurality of the first clamping members extend toward a side where the plurality of the second clamping members are located;
 the plurality of the second clamping members extend toward a side where the plurality of the first clamping members are located; each first clamping member is fastened with a corresponding the second clamping member or the third clamping member, and each second clamping member is fastened with a corresponding the first clamping member or the fourth clamping member.   
     
     
         14 . The portable fan according to  claim 12 , wherein looking along an airflow direction of the air outlet, the power supply assembly is offset from a projection of the fan assembly, the housing body is configured with a partition plate, and the fan assembly and the power supply assembly are respectively located on two sides of the partition plate. 
     
     
         15 . The portable fan according to  claim 12 , wherein the housing body comprises a first side, a second side disposed opposite to the first side, a third side disposed adjacent to the first side and the second side, a fourth side disposed opposite to the third side, a fifth side adjacent to the first side and the second side and a sixth side disposed opposite to the fifth side;
 the air outlet is arranged on the first side;   the first clamping device is arranged on at least one of the third side and the fourth side;   the first portion and the second portion are arranged in a direction from the fifth side to the sixth side.   
     
     
         16 . The portable fan according to  claim 12 , wherein the housing body comprises a first side, a second side disposed opposite to the first side, a third side disposed adjacent to the first side and the second side, a fourth side disposed opposite to the third side, a fifth side adjacent to the first side and the second side and a sixth side disposed opposite to the fifth side, the first side and the second side disposed opposite to each other;
 the air outlet is arranged on the first side;   the first clamping device is arranged on at least one of the third side and the sixth side;   the first portion and the second portion are arranged in a direction from the third side to the fourth side.   
     
     
         17 . The portable fan according to  claim 12 , wherein the housing body comprises a first side, a second side disposed opposite to the first side, a third side disposed adjacent to the first side and the second side, a fourth side disposed opposite to the third side, a fifth side adjacent to the first side and the second side and a sixth side disposed opposite to the fifth side, the first side and the second side disposed opposite to each other;
 the air outlet is arranged on the first side;   the first clamping device is arranged on at least one of the third side and the sixth side;   the first portion and the second portion are arranged in a direction from the first side to the second side.   
     
     
         18 . A portable fan, comprising:
 a housing body, wherein the housing body is provided with an accommodating chamber, an air inlet and an air outlet, at least of the accommodating chamber and the air inlet are communicated to each other in sequence;   a fan assembly, wherein the fan assembly is located within the accommodating chamber and between the air inlet and the air outlet, and is configured to drive an airflow to flow from the air inlet to the air outlet;   a power supply assembly, wherein the power supply assembly is located with the accommodating chamber, and the power supply assembly is electrically connected to the fan assembly to supply power to the fan assembly; and   a first champing device, wherein the first champing device is connected to one side of the housing body, and is configured to form a champing space with the housing body for champing an external object, to fix the portable fan onto the external object;   the housing body comprises a housing and a mounting shell connected to the housing, the mounting shell comprises a partition plate, and the fan assembly and the power supply assembly are respectively located on two sides of the partition plate.   
     
     
         19 . The portable fan according to  claim 18 , wherein the first clamping device is connected to the mounting shell and is integrally formed with the mounting shell. 
     
     
         20 . The portable fan according to  claim 18 , wherein the housing comprises a first fastener portion, the mounting shell comprises a second fastener portion, one of the first fastener portion and the second fastener portion comprises a limiting protrusion, the other of the first fastener portion and the second fastener portion comprises a clamping slot, and the limit protrusion is located in the clamping slot.