CN218712512U - Hair drier - Google Patents
Hair drier Download PDFInfo
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- CN218712512U CN218712512U CN202222583563.0U CN202222583563U CN218712512U CN 218712512 U CN218712512 U CN 218712512U CN 202222583563 U CN202222583563 U CN 202222583563U CN 218712512 U CN218712512 U CN 218712512U
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- air inlet
- hair dryer
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Abstract
The utility model relates to a hair drier, include: the fan comprises a shell extending along the axial direction, a blowing pipe connected to the axial front end of the shell, and a motor and a first fan which are arranged in the shell, wherein the shell is provided with an air inlet positioned at the axial rear end; the blower also comprises a second fan arranged between the first fan and the air inlet, and the axial distance between the second fan and the air inlet is smaller than the axial distance between the second fan and the first fan. The utility model discloses a set up the second fan and just combing the integration by the second fan when mixed and disorderly air current just has entered into near air intake department, avoid the air current to form the vortex or strike shells inner wall back loss wind-force, promote wind channel efficiency effectively.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a hair-dryer, in particular to improve wind channel efficiency's hair-dryer.
[ background of the invention ]
The traditional hair drier comprises a shell, an air pipe connected with the shell, a duct accommodated in the shell, a motor arranged in the duct and a fan driven by the motor to rotate. With the gradual increase of the application range of the hair dryer, the requirements of users on the wind speed and the wind volume of the hair dryer are higher and higher, the traditional hair dryer generally uses a single fan, the air inlet of the shell is not restricted, air freely enters the shell under the negative pressure formed by the fan, the air flow is disturbed and collided with the inner wall of the shell very disorderly, the loss is large, and the air duct efficiency is low.
In view of the above problems, chinese patent application No. CN202122228071.5 discloses a hair dryer, in which unpowered fans are disposed at the front and rear of a powered fan, so as to achieve the purposes of integrating air flow and reducing noise. Compared with an air inlet, the unpowered fan on the upstream of the powered fan is arranged close to the powered fan, namely, the unpowered fan is arranged at the downstream position of the air guide cylinder, the diameter of the position is smaller than the size of the air guide cylinder, so that air flow is contracted and converged at the position after being introduced through the large caliber of the air guide cylinder, the air flow at the position is turbulent relative to the air flow at the large caliber of the air guide cylinder, the turbulent air flow impacts the unpowered fan, the generation of vortex can be increased, the air duct efficiency is not improved, and a new noise source can be generated.
In view of the above, there is a need for an improved hair dryer that overcomes the deficiencies of the prior art.
[ Utility model ] content
To the deficiency of the prior art, the utility model aims to provide an improve wind channel efficiency's hair-dryer.
The utility model provides a prior art problem can adopt following technical scheme: a hair dryer, comprising: the fan comprises a shell extending along the axial direction, a blowing pipe connected to the axial front end of the shell, and a motor and a first fan which are arranged in the shell, wherein the shell is provided with an air inlet positioned at the axial rear end, the blowing pipe is provided with an air outlet positioned at the axial front end, the first fan is driven by the motor to rotate around a first axial line parallel to the axial direction, and air flow generated by the rotation of the first fan enters the shell from the air inlet and is blown out from the air outlet of the blowing pipe; the blower further comprises a second fan arranged between the first fan and the air inlet, and the axial distance between the second fan and the air inlet is smaller than the axial distance between the second fan and the first fan.
The further improvement scheme is as follows: the size of the first fan in a radial direction perpendicular to the axial direction is smaller than the size of the second fan in the radial direction.
The further improvement scheme is as follows: the blower further comprises an air inlet cover detachably connected to the air inlet, the air inlet cover comprises an annular base connected with the shell and an air inlet area located on the inner side of the annular base, and the radial size of the second fan is larger than or equal to that of the air inlet area.
The further improvement scheme is as follows: the motor is provided with a motor shaft extending along the axial direction, the first fan and the second fan are connected to the motor shaft, and the motor shaft drives the first fan and the second fan to rotate together.
The further improvement scheme is as follows: the hair drier further comprises a fixing component connected to the inner wall of the shell, and the second fan is connected to the fixing component and rotates coaxially with the first fan.
The further improvement scheme is as follows: fixed subassembly is including installing extremely shells inner wall's annular portion, certainly a plurality of ribs that the annular portion extends towards first axis, connect a plurality ofly the installation department of rib and connection rotation axis in the installation department, the second fan is fixed on the rotation axis, the rotation axis drives the second fan for the casing winds first axis is rotatory.
The further improvement scheme is as follows: the second fan is located upstream of the rib and the mounting portion in an airflow flowing direction.
The further improvement scheme is as follows: the blower further comprises a duct assembly at least partially accommodated in the shell, the duct assembly comprises a duct shell accommodating the motor and the first fan, the duct shell is provided with a wind guide portion located at the upstream of the first fan in the airflow flowing direction, the wind guide portion is of a conical structure, and one end of the wind guide portion abuts against the end portion of the annular portion.
The further improvement scheme is as follows: one end of the air guide part is close to the annular part, the opening area of the end is larger than that of the other end of the air guide part, and the air guide part and the ducted shell are integrally formed.
The further improvement scheme is as follows: one end of the air guide part is close to the annular part, the opening area of the one end is larger than that of the other end of the air guide part, and the air guide part is detachably connected with the ducted shell.
Compared with the prior art, the utility model discloses following beneficial effect has: through setting up the second fan near air intake department, just combed the integration by the second fan when disorderly air current just enters into, avoid forming the vortex or striking duct shell inner wall back loss wind-force, promote wind channel efficiency effectively.
[ description of the drawings ]
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:
fig. 1 is a schematic view of the overall structure of a hair dryer of the present invention;
figure 2 is a partially exploded schematic view of the blower of figure 1;
figure 3 is a partial cross-sectional view of the blower of figure 1;
figure 4 is a schematic view of a second fan of the blower of figure 2;
figure 5 is a partial sectional view of another embodiment of a blower of the present invention.
The meaning of the reference symbols in the figures:
blower 100 casing 10
Air inlet 101,101' barrel 11
Connecting part 12 fixing plate 121
Ducted assembly 20 ducted casing 21
Base 211 wind guide part 212
Static guide vane 24 motor 30
Blowing pipe 50 air outlet 501
Air inlet 721 grille 722
[ detailed description ] A
The present invention will be described in further detail with reference to the accompanying drawings and embodiments.
The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Words such as "upper", "lower", "front", "rear", "left", "right", etc., indicating orientations or positional relationships are based only on the orientations or positional relationships shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device/element referred to must have a particular orientation or be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1 and 2, an embodiment of the present invention relates to a hair dryer 100 including a housing 10 extending in an axial direction, a duct assembly 20 at least partially accommodated in the housing 10, a motor 30 and a first fan 40 provided in the housing 10, a blower pipe 50 detachably connected to an axial front end of the housing 10, and a battery pack 60 supplying power to the motor 30. The housing 10 is provided with an air inlet 101 at an axial rear end, the blowing pipe 50 is provided with an air outlet 501 at an axial front end, and the airflow generated by the rotation of the first fan 40 enters the duct assembly 20 from the air inlet 101, passes through the blowing pipe 50 and is blown out from the air outlet 501, so that fallen leaves or dust are blown to a designated position. The first fan 40 is driven by the motor 30 to rotate about a first axis X, the first circumferential direction X being parallel to the extension direction (i.e., axial direction) of the casing 10.
The housing 10 is formed by assembling left and right housing halves, and the left and right housing halves are assembled to form an accommodating space therein, and the duct assembly 20 is accommodated in the accommodating space. The blower 100 further comprises an air inlet cover 70 detachably connected to the air inlet 101 of the housing 10, the air inlet cover 70 comprises an annular base 71 connected to the housing 10 and an air inlet area 72 located inside the annular base 71, the air inlet area 72 is formed by a plurality of air inlets 721 and a plurality of grills 722 for filtering large-volume impurities in the air flow.
The case 10 includes a cylinder portion 11 connected to the blowpipe 50, a connection portion 12 extending from an end of the cylinder portion 11 remote from the blowpipe 50 away from the blowpipe 50, a battery mounting portion 13 connected to the connection portion 12, and a handle 14 provided at a top of the connection portion 12 and the battery mounting portion 13. The connecting portion 12 is a plurality of ribs provided at intervals in the circumferential direction, each rib extending from the outer circumferential wall of the cylindrical portion 11 toward the battery mounting portion 13 for connecting the cylindrical portion 11 and the battery mounting portion 13, and forms an air intake space between the cylindrical portion 11 and the battery mounting portion 13, and the air intake cover 70 is located in the air intake space and detachably attached to the air intake opening 101 located at one end of the cylindrical portion 11. The rib of the connecting portion 12 at the top is provided with a fixing plate 121 for mounting the handle 14, and the handle 14 is mounted to the fixing plate 121. The battery pack 60 is detachably connected to the battery mounting portion 13 to supply power to the motor 30.
Referring to fig. 3, the bypass assembly 20 includes a bypass casing 21 accommodating the motor 30 and the first fan 40, and the bypass casing 21 is cylindrical and has an air duct 22 for allowing an air flow to flow therein. The motor 30 and the first fan 40 are housed within the ducted housing 21. The ducted casing 21 includes a base 211 that houses the motor 30 and the first fan 40, and an air guiding portion 212 that extends upstream from the base 211. The base 211 is cylindrical, and the air guide part 212 is tapered, and includes a small diameter part connected to the base 211 and a large diameter part gradually enlarged from the small diameter part, and an opening area of the large diameter part is larger than that of the small diameter part. The air guiding portion 212 is located upstream of the first fan 40 in the airflow direction to guide the airflow into the air duct 22. In the present embodiment, the air guide portion 212 and the ducted casing 21 are integrally configured, but in other embodiments, the air guide portion 212 may be a separate member detachably connected to the ducted casing 21 or the casing 10.
A motor housing 23 is fixed in the duct assembly 20, and the air duct 22 forms a space between the duct housing 21 and the motor housing 23. The motor housing 23 includes a cavity 231 for accommodating the motor 30 and a guide cone 232 connected to the cavity 231. The cavity 231 is provided with a plurality of stationary guide vanes 24 extending towards the air duct 22, and the plurality of stationary guide vanes 24 extend into the air duct 22 to cut and comb the airflow entering the air duct 22. The motor 30 is provided with a motor shaft 31 extending along an axial direction, the first fan 40 includes a first hub 41 connected to the motor shaft 31 and a first fan blade 42 extending from the first hub 41 toward the air duct 22, and the motor 30 drives the first fan blade 42 to rotate to suck air to form an air flow.
Referring to fig. 2 to 4, the blower 100 further includes a fixing member 80 detachably coupled to the inside of the casing 10 and a second fan 90 rotatably coupled to the fixing member 80. In the airflow direction, the fixing assembly 80 is disposed upstream of the duct assembly 20, the second fan 90 is disposed between the first fan 40 and the intake opening 101, and the distance between the second fan 90 and the axial direction of the intake opening 101 is smaller than the distance between the second fan 90 and the axial direction of the first fan 40. The fixing assembly 80 includes a ring portion 81 mounted to the inner wall of the casing 10, a plurality of ribs 82 extending from the ring portion 81, a mounting portion 83 connecting the plurality of ribs 82, and a rotating shaft 84 rotatably connected in the mounting portion 83, the second fan 90 is fixed on the rotating shaft 84, the rotating shaft 84 drives the second fan 90 to rotate around the first axis X relative to the casing 10, and is disposed in the ring portion 81 and between the air guiding portion 212 and the air inlet cover 70.
The fixing component 80 is located between the air guiding part 212 of the ducted casing 21 and the air inlet cover 70, the annular part 81 is attached to the inner wall of the casing 10, and one end of the annular part abuts against one end of the large-diameter part of the air guiding part 212, and the other end abuts against the air inlet cover 70. A plurality of ribs 82 extend between the inner wall of the annular portion 81 and the outer wall of the mounting portion 83, and an air intake space is formed at intervals between each of the ribs 82. The mounting portion 83 connects each rib 82 and forms a closed ring shape. The rotation shaft 84 is installed in the installation portion 83 and is arranged coaxially with the motor shaft 31 such that the second fan 90 and the first fan 40 rotate coaxially. The second fan 90 is rotatably fixed upstream of the rib 82 and the mounting portion 83 in the airflow flowing direction, so that when the airflow channeled by the second fan 90 flows through the rib 82, the airflow does not collide the rib 82 disorderly, and the loss of wind power and the increase of noise are avoided, thereby improving the air duct efficiency.
The second fan 90 includes a second hub 91 connected to the rotating shaft 84 of the fixed component 80 and a plurality of second blades 92 radially extending from the second hub 91 toward the annular portion 81. The dimension of the second fan 90 in the radial direction perpendicular to the first axis X is larger than the dimension of the first fan 40 in the radial direction perpendicular to the first axis X, and the dimension of the second fan 90 in the radial direction perpendicular to the first axis X is larger than or equal to the dimension of the air intake area 72 of the weather intake cover 70 in the radial direction perpendicular to the first axis X. The number of the second fan 90 is smaller than that of the first fan 40.
Referring to fig. 3, in the airflow direction, the inner wall of the annular portion 81 and the inner wall of the large diameter portion are flush, that is, the opening area of the annular portion 81 is equal to the opening area of the large diameter portion of the wind guiding portion 212, so as to avoid the wind loss caused by the uneven inner wall. The first fan 40 rotates at a high speed under the driving of the motor 30 to form a negative pressure difference, air enters the air duct 22 from the air inlet cover 70 under the influence of the negative pressure difference and drives the second fan 90 to rotate, and as the radial size of the air inlet area 72 of the air inlet cover 70 in the direction perpendicular to the first axis X is smaller than or equal to the radial size of the second fan 90 in the direction perpendicular to the first axis X, the air flow entering the air inlet cover 70 is combed by the second fan 90 in all directions and integrated into a relatively smooth air flow, so that the air flow which just enters is prevented from randomly impacting the ducted shell 21 to lose wind power, and the air duct efficiency is greatly reduced.
In addition, in the direction along the first axis X, the distance between the second fan 90 and the air inlet 101 is smaller than the distance between the second fan 90 and the first fan 40, that is, the second fan 90 is disposed at a position close to the air inlet 101. The flow velocity of the air flow just entering the air inlet 101 is relatively flat, and at the moment, the air flow passing through the second fan 90 is combed by the second fan 90, so that a turbulent vortex or a disordered impact on the ducted casing 21 is avoided, and a part of wind power is lost in an air inlet area; tests show that if the second fan 90 is arranged close to the downstream first fan 40, the airflow is converged by the small-diameter part of the air guide part 212, then the flow rate is increased, when the airflow passes through the second fan 90, the airflow strikes the second fan 90 at a high flow rate, and a large number of vortexes are formed relatively, and the integration effect of the second fan 90 on the airflow is greatly reduced, so that the air duct efficiency is not improved, and the noise is increased.
In the above embodiment, the second fan 90 is configured as a passive fan, that is, the negative pressure difference formed by the rotation of the first fan 40 drives the rotation of the second fan 90. Fig. 5 discloses another solution different from the above-mentioned embodiment, that is, the motor shaft 31' extends toward the air inlet 101', the first fan 40' and the second fan 90' are directly connected to the motor shaft 31', the first fan 40' and the second fan 90' are driven to rotate together by the motor shaft 31', a fixing assembly for fixing the second fan 90' is not required, and other structures are the same as those of the above-mentioned embodiment and will not be described in detail herein.
The present invention is not limited to the above-described embodiments. One of ordinary skill in the art will readily recognize that there are numerous other alternatives to the hair dryer of the present invention without departing from the spirit and scope of the invention. The protection scope of the present invention is subject to the content of the claims.
Claims (10)
1. A hair dryer, comprising: the fan comprises a shell extending along the axial direction, a blowing pipe connected to the axial front end of the shell, and a motor and a first fan which are arranged in the shell, wherein the shell is provided with an air inlet positioned at the axial rear end, the blowing pipe is provided with an air outlet positioned at the axial front end, the first fan is driven by the motor to rotate around a first axial line parallel to the axial direction, and air flow generated by the rotation of the first fan enters the shell from the air inlet and is blown out from the air outlet of the blowing pipe; the method is characterized in that: the blower further comprises a second fan arranged between the first fan and the air inlet, and the axial distance between the second fan and the air inlet is smaller than the axial distance between the second fan and the first fan.
2. The hair dryer of claim 1, wherein: the size of the first fan in a radial direction perpendicular to the axial direction is smaller than the size of the second fan in the radial direction.
3. The hair dryer of claim 2, wherein: the blower further comprises an air inlet cover detachably connected to the air inlet, the air inlet cover comprises an annular base connected with the shell and an air inlet area located on the inner side of the annular base, and the radial size of the second fan is larger than or equal to that of the air inlet area.
4. The hair dryer of claim 2, wherein: the motor is provided with a motor shaft extending along the axial direction, the first fan and the second fan are connected to the motor shaft, and the motor shaft drives the first fan and the second fan to rotate together.
5. The hair dryer of claim 2, wherein: the hair drier further comprises a fixing component connected to the inner wall of the shell, and the second fan is connected to the fixing component and rotates coaxially with the first fan.
6. The hair dryer of claim 5, wherein: fixed subassembly is including installing extremely shells inner wall's annular portion, certainly a plurality of ribs that the annular portion extends towards first axis, connect a plurality ofly the installation department of rib and connection rotation axis in the installation department, the second fan is fixed on the rotation axis, the rotation axis drives the second fan for the casing winds first axis is rotatory.
7. The hair dryer of claim 6, wherein: the second fan is located upstream of the rib and the mounting portion in an airflow flowing direction.
8. The hair dryer of claim 6, wherein: the blower further comprises a duct assembly at least partially accommodated in the shell, the duct assembly comprises a duct shell accommodating the motor and the first fan, the duct shell is provided with a wind guide portion located at the upstream of the first fan in the airflow flowing direction, the wind guide portion is of a conical structure, and one end of the wind guide portion abuts against the end portion of the annular portion.
9. The hair dryer of claim 8, wherein: one end of the air guide part is close to the annular part, the opening area of the end is larger than that of the other end of the air guide part, and the air guide part and the ducted shell are integrally formed.
10. The hair dryer of claim 8, wherein: one end of the air guide part is close to the annular part, the opening area of the one end is larger than that of the other end of the air guide part, and the air guide part is detachably connected with the ducted shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222583563.0U CN218712512U (en) | 2022-09-28 | 2022-09-28 | Hair drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222583563.0U CN218712512U (en) | 2022-09-28 | 2022-09-28 | Hair drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218712512U true CN218712512U (en) | 2023-03-24 |
Family
ID=85637168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222583563.0U Active CN218712512U (en) | 2022-09-28 | 2022-09-28 | Hair drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218712512U (en) |
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2022
- 2022-09-28 CN CN202222583563.0U patent/CN218712512U/en active Active
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