CN212117386U - Tuyere assembly and handheld blower - Google Patents

Abstract

The utility model relates to a tuyere subassembly and handheld hair-dryer belongs to small-size domestic appliance, and the tuyere subassembly is used for installing on the aircraft nose of handheld hair-dryer, the tuyere subassembly is including the casing that has the air-out end of relative setting and air inlet end, the air outlet butt joint of air inlet end and aircraft nose, the casing includes that shell body and cover establish interior casing in the shell body, be formed with the intercommunication in the interior casing the tuyere wind channel of air inlet end and air-out end, be formed with thermal-insulated chamber between interior casing and the shell body, thermal-insulated chamber encloses to be established and is located the outside in tuyere wind channel. This tuyere subassembly is through forming thermal-insulated chamber by shell body and inner shell body, and sets up this thermal-insulated chamber in the outside in tuyere wind channel to avoid the hot-blast direct contact lateral wall of shell body in the tuyere wind channel, when preventing the heat loss, also avoided the scald.

Description

Tuyere assembly and handheld blower

Technical Field

The utility model relates to a tuyere subassembly and handheld hair-dryer belongs to small-size domestic appliance.

Background

The handheld hair drier is a small personal care household appliance capable of quickly drying hair, and can be heated by the heating wires to enable the wind to become hot, so that the hair can be dried more quickly. The hair drier comprises a machine head, a handle arranged on the machine head, an electric control assembly arranged in the machine head and a switch assembly electrically connected with the electric control assembly to control the electric control assembly to be turned on or off. A nozzle assembly is typically provided on the handpiece to direct the air blown within the handpiece, but current hand held hair dryers typically suffer from the following problems: 1. when the diffusion type air nozzle assembly is used, the temperatures of the side wall and the middle part are higher, and most of the air nozzle assemblies only have a single-layer wall structure, so that the temperature of a place where the skin of a human body can be contacted is higher, people are easily scalded, and the user experience is poor; 2. the exhaust vent of the tuyere assembly of diffusion type is generally covered with whole air-out indent region to, it is great to cause middle air-out, and peripheral air-out is less, and air outlet wind speed is also less relatively.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tuyere assembly, it can avoid the outside high temperature, can improve the wind speed of blowing, and the wind that makes to blow off is soft.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a tuyere assembly for install on the aircraft nose of handheld hair-dryer, tuyere assembly is including the casing that has the air-out end and the air inlet end of relative setting, the air outlet butt joint of air inlet end and aircraft nose, the casing includes that shell body and cover establish interior shell in the shell body, be formed with the intercommunication in the interior shell body the tuyere wind channel of air inlet end and air-out end, be formed with thermal-insulated chamber between interior shell body and the shell body, thermal-insulated chamber encloses to be established and is located the outside in tuyere wind channel.

Furthermore, the inner shell of the inner shell is internally provided with an air guide, and the air nozzle air channel is formed by enclosing an annular structure formed by the air guide and the inner shell.

Furthermore, the air nozzle component also comprises an air guide cover arranged on the air outlet end, the air guide cover is provided with an inwards concave annular surface, and a plurality of air guide openings are formed in the annular surface.

Furthermore, the annular surface is recessed from the outer end surface of the air guide cover to the central axis of the air guide cover, and the air guide opening extends in the radial direction.

Furthermore, a plurality of air guide columns are formed on the air guide cover in a protruding mode, top air ports are formed in the air guide columns, and guide air channels used for communicating the top air ports with the air channels are formed in the air guide columns.

Further, the top air inlet faces to the central axis of the air guide cover.

Furthermore, the air nozzle air duct is trumpet-shaped, the air guide columns are a plurality of, and the air guide columns are in two rows of rings arranged around the central axis of the air guide cover.

Furthermore, an annular opening which is in butt joint with the air outlet is formed in the air inlet end, and the annular opening is communicated with the air outlet and the air nozzle air duct.

Furthermore, the air inlet end is provided with a butt joint piece used for realizing magnetic butt joint with the machine head.

The utility model also provides a handheld hair-dryer, be in including handle, setting aircraft nose, setting on the handle are in automatically controlled subassembly in the aircraft nose, with automatically controlled subassembly electricity is connected switch module and tuyere subassembly that opens or close with the control automatically controlled subassembly.

The beneficial effects of the utility model reside in that: the utility model discloses a tuyere subassembly is through forming thermal-insulated chamber by shell body and inner shell body, and sets up this thermal-insulated chamber in the outside in tuyere wind channel to avoid the hot-blast direct contact lateral wall of shell body in the tuyere wind channel, when preventing the heat loss, also avoided the scald.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a hand-held hair dryer according to an embodiment of the present invention;

FIG. 2 is an exploded view of the hand held hair dryer of FIG. 1 in another orientation;

FIG. 3 is an exploded view of the handle of FIG. 1;

FIG. 4 is an exploded view of the handle of FIG. 3 in another orientation;

FIG. 5 is an exploded view of the tuyere assembly shown in FIG. 1;

figure 6 is a partial cross-sectional view of the hand held hair dryer of figure 1.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1 and 2, fig. 1 and 2 illustrate a hand held hair dryer 10 according to an embodiment of the present application, the hand held hair dryer 10 being usable in a hair drying setting; or, the application scenarios of local drying, heating and physical therapy in the laboratory, physical therapy room, industrial production, art designing and the like are not limited in the present application. The hand held hair dryer 100 may include the following components: a handle 20, a handpiece 30 coupled to the handle 20, and a nozzle assembly 10 mounted on the handpiece 30.

The handle 20 has a first end 201 connected to the handpiece 30 and a second end 202 remote from the handpiece 30 for the intake of air. Second end 202 has a cable 60 extending therethrough to provide integral power to hand-held hair dryer 100. The end of the cable 60 remote from the second end 202 is provided with a plug (not shown) which may provide an electrical connection to a mains power supply or a battery pack. The cable 60 includes a live wire and a neutral wire. Optionally, the cable 60 is divided into at least two wires inside the handle 20 after one wire has been threaded through the second end 202.

Referring to fig. 2-4, the handle 20 includes a grip housing 21 to protect the components inside the handle 20. The cable 60 enters the handle 20 through the grip housing 21 at the location of the second end 202. The cable 60 is positioned generally midway between the second end 202, extending toward the interior center of the handle 20. Illustratively, the handle 20 is generally tubular in configuration and has a substantially uniform diameter. Of course, the handle 20 may have other shapes, and this embodiment is not limited thereto. Alternatively, in order to secure stability when gripping the handle 20, the gripping portion of the gripping housing 21 may be provided with an anti-slip member (not shown); alternatively, the material of the grip portion of the grip case 21 is an anti-slip material.

A first air duct 22 is formed in the handle 20, and the first air duct 22 penetrates the first end portion 201. The handle 20 is formed with an air inlet 221 communicating with the first air duct 22 and a cable opening 222, and the cable opening 222 is located below the air inlet 221. A cable opening 222 extends through the second end 202. The cable 252 is disposed within the first air chute 22 and the cable 60 is threaded through the cable opening 222 to the first air chute 22.

The handle 20 is provided with a suction assembly 40 therein, and the suction assembly 40 is used for sucking an external air flow from the air inlet 221 and guiding the air flow to the handpiece 30 through the first air duct 22. Optionally, the air suction assembly 40 is a motor integrated with a fan, the motor may be an ac induction motor, a series-excited ac/dc motor, or a dc motor, and the like, and the embodiment does not limit the type of the air suction assembly 40. Specifically, the air suction assembly 40 is disposed within the first air duct 22 such that the air suction assembly 40 cools.

The handle 20 further includes a connector 23 for interfacing with the handpiece 30, and a first end 201 and a second end 202 are formed on the connector 23 as opposite ends of the connector 23. The holding shell 21 is sleeved outside the connecting piece 23. First wind channel 22 forms in connecting piece 23, and is concrete, and the connecting piece is Half a. In this embodiment, the first injection molded body 231 and the second injection molded body 232 are connected by a fastener (not numbered).

The connecting piece 23 extends along the lengthwise direction of the handle 20 and is distinguished by the functional area of the connecting piece 23, the connecting piece 23 is provided with a connecting part 233 forming the first air duct 22 and a base 234 formed at the bottom end of the connecting part 233, the holding shell 21 is installed on the connecting part 233, the air inlet 221 and the cable opening 222 are positioned below the holding shell 21, the air inlet 221 and the cable opening 222 are arranged below the holding shell 21, the space of the handle is utilized more effectively, the arrangement is reasonable, and interference and trouble cannot be caused to the use of the hand-held hair dryer. The air inlet 221 is formed in the connection portion 233, and the cable opening 222 penetrates the base 234. The base 234 is located at the second end 202.

The handle 20 further includes a filter screen assembly 25 sleeved on the connecting member, the filter screen assembly 25 includes a filter screen 251 sleeved on the connecting member 233 and a ventilation ring 252 sleeved on the filter screen 251, the filter screen 251 covers the air inlet 221 and the base 234, and the filter screen assembly 25 filters impurities such as dust in the external air flow entering the air inlet 221, thereby prolonging the service life of the hand-held hair dryer. The bottom of the screen 251 is opened with a through hole 253 corresponding to the cable opening 222 so that the cable 60 passes through the screen 251 to be connected to the outside.

The handle 20 is further provided with a switch assembly 50, and the switch assembly 50 is electrically connected with the air suction assembly 40 and controls the air suction assembly 40 to be started. The switch assembly 50 is connected in series to a cable 60. The switch assembly 50 includes a switch cover (not numbered) disposed on the connecting member 23, a touch-sensing circuit board (not numbered) disposed on the switch cover, and a button 53 disposed at one side of the touch-sensing circuit board and configured to contact the touch-sensing circuit board to form a trigger signal. In this embodiment, the switch assembly 50 is disposed on the handle 20 to facilitate one-handed operation, and in other embodiments, the switch assembly 50 may be disposed on the handpiece 30.

In this embodiment, the touch panel and the button 53 are used to control the temperature of the hand-held hair dryer and the heating element (described in detail later), so the button 53 can be called as a hot/cold button. Indeed, in other embodiments, the touch panel and the button 53 may be used to control other functions, or the touch panel and the button 53 may directly control the handheld blower. The switch assembly 50 further comprises a power button 56 disposed on the switch cover and a plug 57 connected in series to the power button 56, wherein the power button 56 is connected in series to the touch panel and the hot and cold button 53. The switch assembly 50 is not disposed within the first air chute and is located on one side of the first air chute 22. A button hole 211 is formed in the grip case 21 to expose the hot and cold button 53 and the power button 56.

Referring to fig. 1 and 2 again, the nose 30 includes a wind guide pipe 31, a wind barrel 32 nested outside the wind guide pipe 31, an end cap assembly 34 mounted at the rear end of the wind guide pipe 31 and the wind barrel 32, and an outer barrel 39 covering the wind guide pipe 31 and the wind barrel 32. The outer cylinder 39 is butted at both ends thereof against the tuyere assembly 10 and the butt end cap assembly 34, respectively. An electrical control component, in this embodiment, a Printed Circuit Board (PCB) 35, is disposed on a side of the air duct 31 close to the end cap component 34. A second air duct 36 communicated with the first air duct 22 is formed in the machine head 30, and the second air duct 36 is formed between the air duct 31 and the air duct 32. An air outlet 361 is disposed at an end of the second air duct 36 away from the first air duct 22, and the air in the second air duct 36 is blown out (into the air nozzle assembly 10) through the air outlet 361.

Disposed within handpiece 30 are functional components that are electrically connected to switch assembly 40, wherein the functional components include a heating assembly 70. The heating assembly 70 is disposed on the air duct 31 and is installed in the second air duct 36 between the air duct 31 and the air duct 32. The heating assembly 70 may be implemented as an electromagnetic heating wire, or a resistance heating wire, and the embodiment does not limit the implementation manner of the heating assembly 70.

The air suction assembly 40, the switch assembly 50, the touch assembly 25 and the heating assembly 70 are electrically connected to the printed circuit board 35, wherein the switch assembly 50 is used for controlling the printed circuit board 35 to be turned on or off, and the switch assembly 50 is electrically connected to the printed circuit board 35 through a connector 57 (shown in fig. 4) thereon. In this embodiment, switch assembly 50 is disposed within handpiece 30, printed circuit board 35 is disposed within handpiece 20, and switch assembly 50 is electrically connected via a plug 57 (shown in FIG. 4). In detail, the printed circuit board 35 may be implemented to be annularly sleeved on the air guiding pipe 31. The number of layers of the printed circuit board 35 may be a single layer; alternatively, the number of layers may be multiple, and the number of layers of the printed circuit board 35 is not limited in this embodiment.

Printed circuit board 35 is used to control the operating parameters of hand-held blower 100. Such as: adjusting the heating power of the heating assembly 70, the rotating speed of the air suction assembly 40 and other working parameters. Correspondingly, the handheld blower 100 is provided with a second touch control component 37 and a third touch control component 38, and both the second touch control component 37 and the third touch control component 38 are electrically connected to the printed circuit board 35. The second touch control component 37 is configured to receive a second touch control operation to enable the printed circuit board 35 to adjust the heating power of the heating component 70, so as to adjust the air outlet temperature of the handheld blower 100. The third touch control component 38 is configured to receive a third touch control operation to enable the printed circuit board 35 to adjust the rotation speed of the air suction component 40 of the hand-held hair dryer 100, so as to adjust the air outlet speed of the hand-held hair dryer 100. Optionally, the second touch-control assembly 37 and the third touch-control assembly 38 are disposed on the end cap assembly 34; of course, in practical implementation, the second touch device 37 and the third touch device 38 can be disposed at other positions, such as: on the handle 10, the present embodiment does not limit the installation positions of the second touch device 37 and the third touch device 38.

In addition, in the embodiment, only two working parameters of the printed circuit board 35 controlling the heating power of the heating element 70 and the rotation speed of the air suction element 40 are taken as an example for description, during actual implementation, other working parameters may be additionally controlled, accordingly, more touch elements may be integrated on the hand-held hair dryer 100, and this embodiment is not illustrated. The second touch component 37 and the third touch component 38 can be implemented as a button component (i.e., a touch component implemented based on physical keys), or a touch display screen component (i.e., a touch component implemented based on virtual keys), and the implementation manner of the second touch component 37 and the third touch component 38 is not limited in this embodiment.

Referring to fig. 3 and 4, the head 30 further includes an abutting portion 38 protruding into the first end portion 201, the abutting portion 38 is connected to the connecting member 23 in a clamping manner, and the first injection-molded body 231 and the second injection-molded body 232 are connected by a fastener or a clamping manner after the abutting portion 38 is connected to the first injection-molded body 231 and the second injection-molded body 23 of the connecting member 23 in a clamping manner.

Referring to fig. 5 and 6, the nozzle assembly 10 is used to output the air heated by the heating assembly 70 from the hand-held hair dryer 100. The nozzle assembly 10 is removably mounted on a hand held hair dryer 100. The nozzle assembly 10 can change the shape and speed of the wind in the hand-held hair dryer 100, and can converge and output the wind heated by the heating assembly 70 to the outside of the hand-held hair dryer 100.

The tuyere assembly 10 includes a housing 11 having an air outlet end 102 and an air inlet end 101 disposed opposite to each other. The air inlet end 101 is connected with the air outlet 361 of the machine head in a butt joint mode so that the air in the second air duct 36 in the machine head enters the air nozzle assembly 10. The housing 11 includes an outer housing 111 and an inner housing 112 disposed within the outer housing 111. A tuyere duct 113 communicating the air inlet end 101 and the air outlet end 102 is formed in the inner casing 112, a heat insulation chamber 114 is formed between the inner casing 112 and the outer casing 111, and the heat insulation chamber 114 is enclosed outside the tuyere duct 113. The insulating chamber 114 is annular and surrounds the inside of the outer shell 111. In this embodiment, the outer casing 111 and the inner casing 112 are trumpet-shaped. Specifically, the outer case 111 includes a ring-shaped case 1112 having a bottom end surface 1111 and a trumpet shape extending forward from the bottom end surface 1111. The annular shell 1112 has a plurality of latches 1113 formed thereon, and the latches 1113 are adapted to be engaged with latch slots (not numbered) formed in the inner housing 112. The bottom end surface 1111 forms an air inlet end 101 of the air nozzle assembly, an annular opening 1114 in butt joint with the air outlet 361 is formed in the bottom end surface 1111, and the annular opening 1114 is communicated with the air outlet 361 and the air nozzle duct 113.

In this embodiment, the nose 30 is connected to the nozzle assembly 10 through a magnetic assembly and a mechanical structure, and in detail, the magnetic assembly includes a first docking piece (not shown) disposed on the nose 30 and a second docking piece 12 disposed on the bottom end surface 1111 for magnetically docking with the first docking piece, and the first docking piece and the second docking piece 12 may be both magnetic rings. The magnetic component is favorable for improving the attachment strength, and meanwhile, the opposite attraction function of the magnet is utilized, so that the air nozzle component 10 is convenient to position, the air nozzle component 10 with a larger attachment size is favorable for being attached, and magnetic rings are also arranged on other accessories except the air nozzle component 10, so that the air nozzle component is also suitable for accessories of other forms. In this embodiment, the first butt piece is embedded in the machine head 30, and the second butt piece 12 is embedded in the bottom end surface 1111, but in other embodiments, the first butt piece and the second butt piece 12 may be disposed outside the machine head 30 and the tuyere assembly 10 to ensure various requirements of the appearance, and the first butt piece and the second butt piece 12 may be injection-molded on the machine head 30 and the outer housing 111 by an integral injection molding method, or may be clamped on the machine head 30 and the outer housing 111 by a glue or a plastic fitting method.

The nozzle assembly 10 further includes a wind scooper 13 disposed on the wind outlet end 102. The wind scooper 13 has an annular surface 131 having an inner concave shape and a seal portion 132 formed in the annular surface 131. The annular surface 131 is provided with a plurality of air guide openings 133. The sealing portion 132 is an intermediate portion of the wind scooper 13, is not used for wind discharge, and seals the intermediate portion of the wind scooper 13, so that wind blown out from the wind guide opening 133 does not flow back into the nozzle assembly 10. The annular surface 131 is recessed from the outer end surface of the wind scooper 13 toward the central axis of the wind scooper 13, the wind guide opening 133 extends along the radial direction of the wind scooper 13, and the wind guide opening 133 is arranged to extend along the radial direction of the wind scooper 13, so that the air outlet area is increased, and the wind diffusing effect is increased. The annular surface 131 is recessed from the outer end surface of the wind scooper 13 toward the central axis of the wind scooper 13, which is also helpful for the wind blowing from the wind scooper to concentrate toward the middle. Indeed, in other embodiments, the air guiding opening 133 may be circular.

A plurality of air guide columns 134 are formed on the air guide cover 13 in a protruding manner, top air ports 135 are formed on the air guide columns 134, and guide air channels 136 for communicating the top air ports 135 with the air nozzle air channels 113 are formed in the air guide columns 134. The top air opening 135 faces the central axis of the wind scooper 13. Specifically, the top vent 135 is elongated and extends along the axial direction, and in other embodiments, it may be circular. For setting up the top wind gap 135 to be circular, set up long banding and can increase the air-out area to reach the effect of diffusion wind. In this embodiment, the number of the wind guiding columns 134 is several, and the plurality of wind guiding columns 134 are two rows of rings arranged around the central axis of the wind guiding cover 13. The air guide cover 13 is provided with the air guide opening 133 and the two rows of air guide columns 134, and the openings of the air guide columns 134 face the central axis, so that the blown air is conveniently concentrated towards the middle, and the drying efficiency is improved.

In this embodiment, the air guide 14 is provided with to interior casing 112 endotheca, and tuyere duct 113 encloses the annular structure who establishes the formation by air guide 14 and interior casing 112, and is concrete, and tuyere duct 113 is the loudspeaker form, through this kind of design, can reduce the easy problem of scalding of tuyere subassembly 10 central point, also makes the air-out softer simultaneously. It should be noted that, in this embodiment, the wind guiding columns 134 located at the outer row of the two rows of wind guiding columns 134 are formed on the wind guiding cover 13, the wind guiding columns 134 located at the inner row are formed on the sealing portion 132, and the wind guiding cover 13 can be directly communicated with the nozzle duct 113, so the wind guiding columns 134 located on the wind guiding cover 13 are directly communicated with the nozzle duct 113, and the wind guiding columns 134 formed on the sealing portion 132 need to be connected with a connecting column 141 to achieve the communication between the wind guiding columns 134 and the nozzle duct 113. The air guide 14 is fixed to the bottom end surface 1111 by a fastener. In fig. 6, the direction indicated by the arrow is the flow direction of the air blown out from the head 30.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides a tuyere assembly for install on the aircraft nose of handheld hair-dryer, a serial communication port, tuyere assembly is including the casing that has the air-out end and the air inlet end of relative setting, the air outlet butt joint of air inlet end and aircraft nose, the casing includes that shell body and cover establish interior casing in the shell body, be formed with the intercommunication in the interior casing the tuyere wind channel of air inlet end and air-out end, be formed with thermal-insulated chamber between interior casing and the shell body, thermal-insulated chamber encloses to be established and is located the outside in tuyere wind channel.

2. The tuyere assembly of claim 1, wherein an air guide is sleeved in the inner housing, and the tuyere stock channel is defined by the air guide and the inner housing to form an annular structure.

3. The tuyere assembly of claim 2, further comprising a wind scooper disposed on the wind outlet end, wherein the wind scooper has an inwardly concave annular surface, and the annular surface is provided with a plurality of wind scoops.

4. The nozzle assembly of claim 3, wherein the annular surface is recessed from the outer end surface of the wind scooper toward the central axis of the wind scooper, and the wind scooper extends radially.

5. The tuyere assembly of claim 3, wherein a plurality of air guiding columns are formed on the air guiding cover in a protruding manner, top openings are formed on the air guiding columns, and guiding air channels for communicating the top openings with air channels are formed in the air guiding columns.

6. The tuyere assembly of claim 5, wherein the top tuyere is directed toward a central axis of the wind scooper.

7. The tuyere assembly of claim 6, wherein the tuyere duct is trumpet-shaped, the plurality of air guide posts are arranged in two rows of rings around a central axis of the air guide housing.

8. The tuyere assembly of claim 7, wherein an annular opening in butt joint with the air outlet is formed in the air inlet end, and the annular opening communicates with the air outlet and the tuyere duct.

9. The tuyere assembly of claim 1, wherein a docking member is provided on the intake end for magnetically docking with the handpiece.

10. A hand-held hair dryer comprising a handle, a head disposed on the handle, an electrically controlled assembly disposed in the head, and a switch assembly electrically connected to the electrically controlled assembly for controlling the opening or closing of the electrically controlled assembly, wherein the hair dryer further comprises a nozzle assembly as claimed in any one of claims 1 to 9 mounted on the head.

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