CN212345671U

CN212345671U - Hand-held blower with fresh air duct

Info

Publication number: CN212345671U
Application number: CN202020389506.7U
Authority: CN
Inventors: 柳作强; 谢宗益
Original assignee: Shaoxing Yiqiang Electric Appliance Technology Co ltd
Current assignee: Shaoxing Yiqiang Electric Appliance Technology Co ltd
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2021-01-15
Anticipated expiration: 2030-03-24

Abstract

The utility model relates to a new trend hand-held type hair-dryer is that the structural design to current like product is not good enough to lead to the wind channel leakproofness in the organism and circulation relatively poor, heat dissipation, the not good enough technical problem of thermal-insulated effect and design. The shell of the hair drier is T-shaped, a motor fan assembly is arranged in the grab handle shell, and a heating assembly is arranged in the inner sleeve; the air duct in the casing is sequentially formed by fixing one end of a handle shell to an inner cylinder shell and an inner sleeve through screws, fixing a shell opening at the other end of the handle shell to the upper part of a flat key groove of an inner hood through screws, communicating the upper end in a cylindrical section of the inner hood with an air cylinder shell and the inner sleeve, sequentially sleeving a filter screen and an air inlet cover on the outer diameters of the flat key grooves at the two sides of the lower part of the inner hood, and sequentially forming an air duct in the casing by the air inlet cover, the filter screen, the flat key groove of the inner hood, a motor fan assembly in the inner hood, the upper end of the cylindrical section in the motor hood, the inner diameter of the inner sleeve and the outer diameter of a heating cylinder of a.

Description

Hand-held blower with fresh air duct

Technical Field

The utility model relates to a hair drier is a new trend hand-held type hair drier.

Background

The hair drier, also called as hair drier, is a hairdressing tool for drying hair by enhancing instant ventilation effect through a fan, and the air outlet effect comprises hot air outlet after being heated by an electric heating wire and cold air outlet without being heated. Some existing hair dryers are convenient to carry and small in size, and a fan structure is arranged in a handle; such as application No. 201910767696.3, application publication No. 2019.12.06, entitled "hand-held implement", which is disclosed in chinese patent document; application No. 201910866038.X, application publication No. 2019.11.22, entitled "hand-held hair dryer", disclosed in chinese patent literature; application No. 201910103449.3, published as 2019.04.30, published in chinese patent literature entitled "blower"; the invention discloses an application number 201810864146.9 in Chinese patent literature, application publication 2018.12.11 and the name of a hair dryer. However, the handle structure of the product and the like is not good enough in design, the production and assembly are inconvenient, the overall firmness, stability and safety are not good enough, and particularly the air duct in the machine body is poor in sealing performance and circulation.

Disclosure of Invention

In order to overcome the defects, the utility model aims to provide a handle air inlet type fresh air duct handheld blower to the field, which ensures that the air duct sealing performance and the circulation in the blower body are poor due to the poor structural design of the existing like products, and the technical problems of inconvenient production and assembly, poor heat dissipation and poor heat insulation effect are solved. The purpose is realized by the following technical scheme.

A new wind channel hand-held hair drier, the grip handle shell, air inlet cover, air cylinder shell and back cover assembly of the hair drier form the body, the body is T-shaped, the grip handle shell of the body is greater than the grip handle from grip handle shell to one end of back cover assembly to the length of one end of air outlet, there are assembly of electric machine fans in the grip handle shell, there are inner skleeves in the air cylinder shell, the inner skleeve links with air cylinder shell as an organic whole, there are heating assemblies in the inner skleeve, the air outlet of the inner skleeve has air outlet nozzles; the structural design is characterized in that a front hood and a rear hood in a handle shell are buckled to form an inner hood, the handle shell is sleeved in a cylindrical section at the upper part of the inner hood, an arc-shaped notch is formed in one end of a sleeved part of the handle shell, an air cylinder shell and an inner sleeve, the arc-shaped notch is fixed to the inner cylinder shell and the inner sleeve through screws, a shell opening at the other end of the handle shell is fixed above a flat key groove of the inner hood through screws, a motor fan assembly is arranged at the inner lower end of the cylindrical section of the inner hood, the upper end of the cylindrical section of the inner hood is communicated with the air cylinder shell and the inner sleeve, a wire outlet sleeve is fixed at the lower end of the inner hood, flat key grooves are formed in two sides of the lower part of the inner hood, a filter screen and an air inlet cover are sequentially sleeved at the outer diameter of the flat key groove of the inner hood, wires of the wire outlet sleeve and the motor, the circuit board of button subassembly passes through the dryer shell, the inner skleeve is connected with heating element's heating circuit board, the exhaust vent of inner skleeve sets up the tip circle footpath between the inner skleeve of central recess external diameter and dryer shell, the interior hood of flat keyway top is equipped with the ventilation hole, the air inlet cover, the filter screen, the flat keyway of interior hood, the motor fan subassembly in the interior hood, the cylinder section upper end in the motor cover, between the internal diameter of inner skleeve and heating element's the heating tube external diameter, the wind channel in the casing is constituteed in proper order to the air outlet of inner sk. Thereby the air enters the motor fan assembly in the interior aircraft bonnet through the flat keyway of air inlet cover, filter screen, interior aircraft bonnet, in getting into the inner skleeve by the cylinder section upper end in the motor cover after motor fan assembly accelerates, blows off from the air outlet of inner skleeve at last, and the air in the inner skleeve also can be through heating element heating.

The handle shell and the air inlet cover of the front hood and the outer diameter of the rear hood are sleeved to form a cylinder, a button of a button assembly extends out of a button hole of the handle shell, a button groove is formed in the front hood of the button assembly, the button assembly is arranged in the button groove of the front hood through a button cover, a front hood cylindrical section of the button assembly is arranged at the rear part of the front hood of the motor fan assembly, the rear hood is fixed to the half opening of the front hood through screws, a first sealing gasket is arranged at a fixing part, a ring rib at the top of the cylindrical section of the front hood is sleeved in the air barrel shell and the inner sleeve and is fixed to the air barrel shell and the inner sleeve through screws in the screw groove of the cylindrical section of the front hood, a second sealing gasket and a third sealing gasket are arranged at the fixing part, and an air duct between the inner diameter of. Thus, a closed channel is formed in the front hood and the rear hood and is used as an air channel in the handle shell at the upper part of the air inlet hood.

The top of the motor fan assembly is provided with a motor circuit board, the motor circuit board is provided with a convex and rectangular wiring terminal, the wiring terminal extends out of the front hood through the wiring hole and is connected with the button circuit board of the button assembly, and the motor fan assembly is fixed in the rectangular groove below the cylindrical section in the front hood through the wiring terminal. Therefore, the electric wire of the motor fan assembly in the handle shell extends out of the front hood and is connected with the button circuit board of the button assembly, and the motor fan assembly is fixedly installed in the front hood.

The display cover external diameter of back shroud subassembly is equipped with the sealing washer, the display cover is fixed in the nozzle internal diameter of inner skleeve through the sealing washer, heating element passes through the sealing washer and constitutes the inner skleeve's seal chamber, heating element's heating plate one side heating circuit board is equipped with electronic components, heating element's heating plate is vertical to be set up in the external diameter of heating cylinder, heating element's heating cylinder links as an organic whole with heating circuit board, the back lid shell opening internal diameter of back shroud subassembly is fixed in the nozzle external diameter of inner skleeve, the nozzle of inner skleeve stretches out the shell mouth of bobbin shell, the internal diameter of inner skleeve and the. The cavity in the inner sleeve is further sealed by the display cover, and air in the inner sleeve is prevented from overflowing through the rear cover assembly.

And one side of the heating cylinder of the heating assembly is provided with a column base, and the column base penetrates through the heating circuit board and is inserted into a column sleeve on one side of the display cover of the rear cover assembly. The structure is convenient for the further fixed assembly of the display cover and the heating component.

The utility model discloses a rear cover subassembly, including rear cover subassembly, the button hole department that shows the cover is equipped with the key assembly, the button hole that shows the cover is equipped with the button pad, the button cover one end of key assembly inserts the button hole in the display cover through the key pad and fills up, the button hole of button cover stretches out the button hole of back lid shell and back shroud, the tip lock of back shroud and back lid shell is fixed, the central window of back shroud, back lid shell, display cover aligns with the display screen of heating element one side heating circuit board. The structure is convenient for sealing the key hole of the display cover when the key assembly touches and controls the key electronic component on the heating circuit board.

The inner diameter center of the air outlet of the inner sleeve is provided with an inner nozzle sleeve, the inner nozzle sleeve is fixedly arranged in a closed central cavity groove of the inner sleeve in a buckling mode, the inner sleeve of the outer diameter of the closed central cavity groove is provided with an annular hole, the annular hole of the inner sleeve is located in the inner diameter of a shell opening of the air sleeve shell, a tube opening at one end of a heating tube of the heating assembly is fixed in the closed central cavity groove of the inner sleeve, a sealed inner cavity in the inner sleeve of the outer diameter of the heating tube is communicated with the annular hole, and the annular. Thus, air is blown out from the annular hole at the air outlet of the inner sleeve, and the air in the inner sleeve is positioned in the sealed inner cavity between the outer diameter of the heating cylinder and the outer diameter of the inner sleeve.

The inner diameter of one end cover opening of the air inlet cover is provided with a magnetic gasket, the magnetic gasket is connected with the air inlet cover into a whole, one side end of the flat key groove of the inner cover is provided with a magnetic hole, a magnet is arranged in the magnetic hole, and the air inlet cover is fixed on the magnet through the magnetic gasket in an adsorption mode. The air inlet cover is fixed on the inner hood and the handle shell in a magnetic adsorption mode.

The aircraft bonnet's flat keyway department is equipped with the U font through-hole in preceding aircraft bonnet and the rear bonnet constitution aircraft bonnet, is equipped with the U font line hole in preceding aircraft bonnet and the rear bonnet of U font through-hole both sides, and the rear bonnet above the U font through-hole is equipped with the net dish, and the net dish is even as an organic whole with the rear bonnet, and the filter screen communicates with each other through the wind channel in net dish and the preceding aircraft bonnet, the rear bonnet, and the mesh of net dish is the ventilation hole of aircraft bonnet in the flat keyway top. The structure is convenient for further hiding the electric wires in the wire outlet sleeve at the flat key groove.

The utility model has reasonable structural design, simple production and assembly, better air circulation effect in the machine body, good heat dissipation and heat insulation effects and convenient carrying and use; the air channel is suitable for being used as an air channel of a handheld hair drier and the structural improvement of the like products.

Drawings

Fig. 1 is a schematic sectional structural view of an embodiment of the present invention, in which arrows represent air duct paths.

Fig. 2 is a schematic perspective view of fig. 1.

Fig. 3 is a schematic diagram of the exploded structure of fig. 1.

Fig. 4 is a schematic view of an opening structure of the rear cover case of fig. 2.

Fig. 5 is a schematic view of the inner structure of the handle case of fig. 2, in which the handle case, the air inlet cover and the filter screen are omitted.

Figure number and name: 1. the handle shell, 2, rear hood, 3, motor fan assembly, 4, air inlet cover, 5, wire outlet sleeve, 6, filter screen, 7, front hood, 8, button assembly, 9, air outlet nozzle, 10, wind cylinder shell, 11, inner sleeve, 12, heating assembly, 13, rear cover assembly, 1301, display cover, 1302, rear cover shell, 1303, rear hood cover, 14, button assembly, 1401, button pad, 1402, button seat, 1403, button sleeve, 15, sealing ring, 16, first sealing gasket, 17, second sealing gasket, 18, third sealing gasket, 19, wiring sleeve, 20, magnetic gasket, 21, inner nozzle sleeve.

Detailed Description

The structure and use of the present invention will now be further described with reference to the accompanying drawings. As shown in fig. 1-5, the grip shell 1, the air inlet cover 4, the air duct shell 10 and the rear cover assembly 13 of the hair dryer form a shell, the shell is T-shaped, the length from the grip shell to one end of the air outlet of the shell is greater than the grip from the grip shell to one end of the rear cover assembly, the grip shell is internally provided with the motor-fan assembly 3, the air duct shell is internally provided with the inner sleeve 11, the inner sleeve is connected with the air duct shell into a whole, the inner sleeve is internally provided with the heating assembly 12, and the air outlet of the inner sleeve is provided with the air outlet. The concrete structure is as follows: the front hood and the rear hood in the handle shell are buckled to form an inner hood, the handle shell is sleeved in a cylindrical section at the upper part of the inner hood, an arc-shaped notch is formed in one end of a sleeved part of the handle shell, the air cylinder shell and the inner sleeve, the arc-shaped notch is fixed to the inner cylinder shell and the inner sleeve through screws, the other end of the handle shell is fixed above a flat key groove of the inner hood through screws, a motor fan assembly is arranged at the inner lower end of the cylindrical section of the inner hood, the upper end of the cylindrical section of the inner hood is communicated with the air cylinder shell and the inner sleeve, a wire outgoing sleeve 5 is fixed to the lower end of the inner hood, flat key grooves are formed in two sides of the lower part of the inner hood, a filter screen 6 and an air inlet cover are sequentially sleeved on the outer diameter of the flat key groove of the inner hood, electric wires of the wire outgoing sleeve and the motor fan assembly in the shell extend out of the inner hood through wire holes, The inner sleeve is connected with a heating circuit board of the heating assembly, an air outlet of the inner sleeve is arranged on the diameter of an end ring between the inner sleeve and the air duct shell of the central groove, and an inner hood above the flat key groove is provided with a vent hole. An inner nozzle sleeve 21 is arranged at the center of the inner diameter of an air outlet of the inner sleeve, the inner nozzle sleeve is fixedly arranged in a closed central cavity groove of the inner sleeve in a buckled mode, an annular hole is formed in the inner sleeve of the outer diameter of the closed central cavity groove, the annular hole of the inner sleeve is located in the inner diameter of a shell opening of the air sleeve shell, a barrel opening at one end of a heating barrel of the heating assembly is fixed in the closed central cavity groove of the inner sleeve, a sealed inner cavity in the inner sleeve of the outer diameter of the heating barrel is communicated with the annular hole, the annular hole is an air outlet of the inner barrel sleeve, an air inlet cover, a filter screen, a flat key groove of an inner hood, a motor fan assembly in the inner hood, the upper end of a cylindrical section in.

Meanwhile, the grab handle shell of the outer diameter of the front hood and the grab handle shell of the outer diameter of the rear hood are sleeved with the air inlet hood to form a cylinder, a button of the button assembly extends out of a button hole of the grab handle shell, a button groove is formed in the front hood at the position of the button assembly, and the button assembly is arranged in the button groove of the front hood through a button cover. The front engine cover cylinder section of button subassembly department, the front engine cover rear portion of motor fan subassembly department is equipped with half opening, the half opening of rear engine cover through the screw fixation in front engine cover, the fixed department is equipped with first sealed pad 16, the cylinder section top ring muscle of front engine cover embolias spacing in air cylinder shell and inner skleeve, and be fixed in air cylinder shell and inner skleeve through the cylinder section screw inslot screw of front engine cover, the fixed department is equipped with second sealed pad 17 and third sealed pad 18, the wind channel between the internal diameter of inner engine cover and the internal diameter of inner skleeve constitutes airtight passageway. The top of motor fan subassembly is equipped with motor circuit board, and motor circuit board is equipped with the arch and is the binding post of rectangle, and binding post stretches out preceding aircraft bonnet through this line hole and is connected with button assembly's button circuit board, and motor fan subassembly passes through binding post and is fixed in the rectangular channel of cylinder section below in the preceding aircraft bonnet. The inner diameter of one end cover opening of the air inlet cover is provided with a magnetic gasket 20, the magnetic gasket and the air inlet cover are connected into a whole, one side end part of the flat key groove of the inner cover is provided with a magnetic hole, a magnet is arranged in the magnetic hole, and the air inlet cover is fixed on the magnet through the magnetic gasket in an adsorption mode. The flat keyway department of aircraft bonnet is equipped with the U font through-hole in aircraft bonnet in preceding aircraft bonnet and the constitution of back aircraft bonnet, is equipped with the U font line hole in preceding aircraft bonnet and the back aircraft bonnet of U font through-hole both sides, and the back aircraft bonnet above the U font through-hole is equipped with the net dish, and the net dish is even as an organic whole with back aircraft bonnet, and the filter screen communicates with each other through the wind channel in net dish and the preceding aircraft bonnet, the back aircraft bonnet, and the mesh of net dish is the ventilation hole of aircraft bonnet in the flat.

The outer diameter of the display cover 1301 of the rear cover assembly is provided with a sealing ring 15, the display cover is fixed on the inner diameter of the opening of the inner sleeve through the sealing ring, the heating assembly forms a sealing inner cavity of the inner sleeve through the sealing ring, the inner diameter of the shell opening of the rear cover shell 1302 of the rear cover assembly is fixed on the outer diameter of the opening of the inner sleeve, the opening of the inner sleeve extends out of the shell opening of the outer sleeve, and a cavity between the inner diameter of the inner sleeve and the display cover forms a closed. The heating circuit board is provided with an electronic component on one side of the heating sheet of the heating assembly, the heating sheet of the heating assembly is vertically arranged on the outer diameter of the heating cylinder, and the heating cylinder of the heating assembly is connected with the heating circuit board into a whole; one side of the heating cylinder of the heating assembly is provided with a column base, and the column base penetrates through the heating circuit board and is inserted into a column sleeve on one side of a display cover of the rear cover assembly. The display cover one side of back shroud subassembly is equipped with key assembly 14, the key hole department that shows the cover is equipped with button seat 1402, the key hole that shows the cover is equipped with button pad 1401, button cover 1403 one end of key assembly inserts the key pad in the key hole that shows the cover through the button seat, the other end of button cover stretches out the key hole of back lid shell and back shroud 1303, the tip lock of back shroud and back lid shell is fixed, the back shroud shell, the central window that shows the cover aligns with the display screen of heating element one side heating circuit board.

The air duct of this hair-dryer comprises air duct in the grab handle and the interior air duct of inner skleeve, preceding aircraft bonnet passes through the screw and corresponds sealed one side that is fixed in air duct shell and inner skleeve with sealed the pad, the fixed interior aircraft bonnet internal diameter of back aircraft bonnet and preceding aircraft bonnet connection is the interior air duct that goes up of grab handle, the flat keyway department filter screen of back aircraft bonnet and preceding aircraft bonnet connection below and air inlet cover are the air inlet air duct in the air duct on the grab handle, sealed interior aircraft bonnet external diameter cover has the grab handle shell, the electric wire stretches out interior aircraft bonnet in the grab handle shell and passes through binding post and connecting wire sleeve respectively with the motor circuit board, the button circuit board, the wire sleeve constitutes the UNIC. According to the structural characteristics, a magnet can also be arranged at the air outlet nozzle, a magnetic ring is arranged between the air outlet of the inner sleeve and the shell opening of the air duct shell, and the air outlet nozzle is fixed on the magnetic ring of the air outlet through the magnet in an adsorption manner; a decorative ring is arranged at the fastening and fixing position of the rear cover shell of the rear cover component and the air duct shell; the heating assembly in the air duct shell adopts heating ducts and heating sheets with other structural forms.

Claims

1. A hand-held hair drier with a fresh air duct comprises a shell body which is composed of a handle shell (1), an air inlet cover (4), an air barrel shell (10) and a rear cover component (13), wherein the shell body is T-shaped, the length from the handle shell to one end of an air outlet of the shell body is larger than that from the handle shell to the handle of one end of the rear cover component, a motor fan component (3) is arranged in the handle shell, an inner sleeve (11) is arranged in the air barrel shell, the inner sleeve and the air barrel shell are connected into a whole, a heating component (12) is arranged in the inner sleeve, and an air outlet of the inner sleeve is; it is characterized in that a front engine cover (7) in a handle shell (1) is buckled with a rear engine cover (2) to form an inner engine cover, the handle shell is sleeved in a cylindrical section at the upper part of the inner engine cover, one end of the sleeved part of the handle shell, an air cylinder shell (10) and an inner sleeve (11) is provided with an arc-shaped notch and is fixed on the inner cylinder shell and the inner sleeve through screws, the other end shell port of the handle shell is fixed above a flat key groove of the inner engine cover through screws, the inner lower end of the cylindrical section of the inner engine cover is provided with a motor fan assembly (3), the inner upper end of the cylindrical section of the inner engine cover is communicated with the air cylinder shell and the inner sleeve, a wire outlet sleeve (5) is fixed at the tail end of the lower part of the inner engine cover, flat key grooves are arranged at two sides of the lower part of the inner engine cover, the outer diameter of the flat key groove of the inner engine cover is sequentially sleeved with a, and is connected with the button circuit board of button subassembly (8) through wiring sleeve (19), the circuit board of button subassembly passes through the dryer shell, the inner skleeve is connected with the heating circuit board of heating element (12), the exhaust vent of inner skleeve sets up the tip circle footpath between the inner skleeve of central recess external diameter and dryer shell, the interior hood of flat keyway top is equipped with the ventilation hole, the air inlet cover, the filter screen, the flat keyway of interior hood, the motor fan subassembly in the interior hood, cylinder section upper end in the motor cover, between the internal diameter of inner skleeve and the heating element's the heating cylinder external diameter, the wind channel in the casing is constituteed in proper order to the air outlet of inner.

2. The hand-held blower with the fresh air duct according to claim 1, characterized in that the grip shell (1) of the outer diameter of the front hood (7) and the rear hood (2) is sleeved with the air inlet cover (4) to form a cylinder, the button of the button assembly (8) extends out of the button hole of the grip shell, the front hood at the button assembly is provided with a button groove, the button assembly is arranged in the button groove of the front hood through a button cover, the cylindrical section of the front hood at the button assembly is provided with a half opening at the rear part of the front hood at the motor fan assembly (3), the rear hood is fixed at the half opening of the front hood through screws, a first sealing gasket (16) is arranged at the fixing position, the top rib ring of the cylindrical section of the front hood is sleeved with and limited in the air duct shell (10) and the inner sleeve (11) and is fixed at the air duct shell and the inner sleeve through screws in the cylindrical section of the front hood, and a second sealing gasket (17) and a, the air duct between the inner diameter of the inner hood and the inner diameter of the inner sleeve forms a closed passage.

3. The new air duct hand-held hair drier of claim 2, characterized in that the top of the motor fan assembly (3) is provided with a motor circuit board, the motor circuit board is provided with a convex and rectangular connecting terminal, the connecting terminal extends out of the front hood (7) through the wire hole to be connected with the button circuit board of the button assembly (8), and the motor fan assembly is fixed in a rectangular groove below the cylindrical section in the front hood through the connecting terminal.

4. The hand-held fresh air duct blower as claimed in claim 1, wherein the outer diameter of the display cover (1301) of the rear cover assembly (13) is provided with a sealing ring (15), the display cover is fixed to the inner diameter of the opening of the inner sleeve (11) through the sealing ring, the heating assembly (12) forms the sealed inner cavity of the inner sleeve through the sealing ring, the heating circuit board on one side of the heating sheet of the heating assembly is provided with an electronic component, the heating sheet of the heating assembly is vertically arranged on the outer diameter of the heating cylinder, the heating cylinder of the heating assembly is connected with the heating circuit board into a whole, the inner diameter of the opening of the rear cover shell (1302) of the rear cover assembly is fixed to the outer diameter of the opening of the inner sleeve, the opening of the inner sleeve extends out of the opening of the air cylinder shell.

5. The hand-held blower with the fresh air duct as claimed in claim 4, wherein the inner nozzle sleeve (21) is arranged at the center of the inner diameter of the air outlet of the inner sleeve (11), the inner nozzle sleeve is fixedly buckled with the closed central cavity groove of the inner sleeve, the inner sleeve with the closed central cavity outer diameter is provided with an annular hole, the annular hole of the inner sleeve is positioned at the shell opening inner diameter of the blower shell (10), a tube opening at one end of the heating tube of the heating assembly (12) is fixed at the closed central cavity groove of the inner sleeve, a sealed inner cavity in the inner sleeve with the heating tube outer diameter is communicated with the annular hole, and the annular hole is an air outlet of the inner sleeve.

6. The hand-held blower with the fresh air duct as claimed in claim 4 is characterized in that a button assembly (14) is arranged on one side of a display cover (1301) of the rear cover assembly (13), a button seat (1402) is arranged at a button hole of the display cover, a button pad (1401) is arranged at the button hole of the display cover, one end of a button sleeve (1403) of the button assembly is inserted into the button pad in the button hole of the display cover through the button seat, the other end of the button sleeve extends out of the button holes of the rear cover shell (1302) and the rear cover shell (1303), the rear cover shell is fixedly buckled with the end part of the rear cover shell, and a central window of the rear cover shell, the rear cover shell and the display cover is aligned with a display screen of a heating circuit board on one side of the.

7. The hand-held blower of claim 1, characterized in that the inner diameter of the air outlet of the inner sleeve (11) is centrally provided with an inner nozzle sleeve (21), the inner nozzle sleeve is fixedly fastened in the closed central cavity groove of the inner sleeve, the sleeve of the outer diameter of the closed central cavity groove is provided with an annular hole, and the sealed inner cavity of the inner sleeve is communicated with the annular hole.

8. The hand-held blower with the new air duct as claimed in claim 1 is characterized in that a magnetic washer (20) is arranged on the inner diameter of one end cover opening of the air inlet cover (4), the magnetic washer is connected with the air inlet cover into a whole, a magnetic hole is arranged on one end part of the flat key groove of the inner cover, a magnet is arranged in the magnetic hole, and the air inlet cover is fixed on the magnet through the magnetic washer in an adsorption mode.

9. The hand-held blower with the fresh air duct according to claim 1 is characterized in that a U-shaped through hole is formed in a flat key groove of an inner hood formed by the front hood (7) and the rear hood (2), U-shaped line holes are formed in the front hood and the rear hood on two sides of the U-shaped through hole, a net disc is arranged on the rear hood above the U-shaped through hole and connected with the rear hood into a whole, the filter screen (6) is communicated with the air ducts in the front hood and the rear hood through the net disc, and the net holes of the net disc are ventilation holes of the inner hood above the flat key groove.