CN212814939U - Electric hair drier - Google Patents
Electric hair drier Download PDFInfo
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- CN212814939U CN212814939U CN202020832784.5U CN202020832784U CN212814939U CN 212814939 U CN212814939 U CN 212814939U CN 202020832784 U CN202020832784 U CN 202020832784U CN 212814939 U CN212814939 U CN 212814939U
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Abstract
The utility model discloses an electric hair drier, which comprises an outer shell, an inner shell, a heating body and a fan component, wherein the inner shell is inserted and fixed on the outer shell, and the outer peripheral wall of the inner shell is separated from the inner peripheral wall of the outer shell to form a heat insulation cavity; the air inlet end of the outer shell is communicated with the air inlet end of the inner shell, and the air outlet end of the outer shell is communicated with the air outlet end of the inner shell; the heat-generating body and fan subassembly are fixed in the inner wall of interior casing, and the position of heat-generating body is corresponding with the position in thermal-insulated chamber, are equipped with thermal-insulated chamber between shell body and the interior casing, the position of heat-generating body with thermal-insulated chamber's position is corresponding, because the coefficient of heat conductivity of air is little, the event utilizes the air to carry out thermal-insulated effectual, consequently the heat that the heat-generating body produced transmits to the shell body on less, even consequently use this hairdryer for a long time, the outer wall temperature of shell body also can not be too high, reduce the danger that the user was scalded, promoted user.
Description
Technical Field
The utility model relates to an hairdryer technical field especially relates to a hairdryer.
Background
The electric hair drier is a daily article which is always provided for people in daily life, and the heated air is blown out by the fan, so that hot air can be provided for users to realize the effect of accelerating the drying of articles. However, the shell of the existing hair dryer is of a single-layer structure, the inner wall of the shell is made of mica sheet fireproof heat insulation materials, but the mica sheets fall off due to long-term thermalization, the temperature of the shell can be very high due to the falling of the mica sheets after long-term use, users, particularly children, can be scalded and mica fragments can blow into eyes when the users are not paying attention to the shell, and the use experience of the users is reduced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a hair drier which can improve the use safety and the use experience of users.
The purpose of the utility model is realized by adopting the following technical scheme:
an electric hair drier comprises an outer shell, an inner shell, a heating body and a fan assembly, wherein the inner shell is fixedly inserted into the outer shell, and the outer peripheral wall of part of the inner shell is separated from the inner peripheral wall of the part of the outer shell to form a heat insulation cavity; the air inlet end of the outer shell is communicated with the air inlet end of the inner shell, and the air outlet end of the outer shell is communicated with the air outlet end of the inner shell; the heating element with the fan subassembly is fixed in the inner wall of interior casing, just the position of heating element with the position in thermal-insulated chamber corresponds.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses be equipped with thermal-insulated chamber between shell body and interior casing, the position of heat-generating body with the position in thermal-insulated chamber is corresponding, because the coefficient of heat conductivity of air is little, the event utilizes the air to carry out thermal-insulated effectual, and consequently the heat that the heat-generating body produced transmits to the shell body on less, even consequently uses this hairdryer for a long time, the outer wall temperature of shell body also can not be too high, reduces the danger that the user was scalded, has promoted user's use greatly and has experienced.
In one embodiment, the inner shell comprises a flared part, a first flat part, a necking part and a second flat part which are connected in sequence; the flared part is close to the air outlet end of the outer shell, and the outer peripheral wall of the flared part, the outer peripheral wall of the first straight part and the outer peripheral wall of the necking part are separated from the inner peripheral wall of the outer shell to form the heat insulation cavity; the heating body is positioned on the inner wall of the first straight part, and the fan assembly is installed and fixed on the inner wall of the second straight part; in the use, the air current gets into the second straight portion, the velocity of flow increases behind the throat portion, the air current after the velocity of flow increase gets into first straight portion, because the heat-generating body sets up in first straight portion, and the velocity of flow is big more the heat transfer effect is better, consequently, guarantee the temperature rise of air current when promoting the heat transfer effect between air current and the heat-generating body and be unlikely to too high, thereby the travelling comfort of this hairdryer air-out temperature has been guaranteed, simultaneously with the air current flow behind the heat-generating body heat transfer flared portion, the air current velocity of flow descends, thereby the air-out noise of this hairdryer can be reduced, further improve user's use and.
In one embodiment, the inner shell is divided into a first shell and a second shell along the axial direction of the inner shell, and the first shell is detachably connected with the second shell, so that the heating body and the fan assembly can be conveniently dismounted and maintained by a user. It will be readily appreciated that the detachable connection may be a screw connection, a snap connection, or the like.
In one of them embodiment, the fan subassembly include the motor and with the flabellum that motor drive is connected, motor fixed mounting in the inner wall of second straight portion, the flabellum sets up the second straight portion with between the air inlet end of shell body, the benefit of design like this guarantees that the flabellum works under the lower environment of temperature, avoids the flabellum to be heated and warp.
In one embodiment, the electric hair drier also comprises a handheld handle fixed on the outer wall of the outer shell, and the handheld handle is provided with an electric cavity for mounting the circuit board of the electric hair drier; so set up, this hairdryer of convenience of customers handheld uses, further promotes user's use experience.
In one embodiment, the handheld handle is divided into a third shell and a fourth shell along the axial direction of the handheld handle, and the third shell is detachably connected with the fourth shell; the advantage of design like this is that convenience of customers is to carry out dismouting maintenance to the circuit board.
In one embodiment, the electric hair drier further comprises a temperature controller and a fuse, wherein the temperature controller and the fuse are fixedly arranged on the outer wall of the first flat part, and the temperature controller, the fuse and the heating element are electrically connected in series; when the heating element is overheated, the temperature controller is disconnected with the heating element to be electrified, the temperature controller can be electrified again after the temperature is reduced to enable the heating element to continue working, and the fuse serves as the temperature controller to be powered off permanently when the temperature controller fails and is in short circuit in a limit state.
In one embodiment, the electric hair drier also comprises a screen assembly; the net assembly comprises a first net and a second net, the first net is fixed at the air inlet end of the outer shell, the second net is fixed at the air outlet end of the outer shell, and hair is prevented from entering the inner blocking air channel of the electric hair drier.
In one embodiment, the electric hair drier further comprises a first separation net and a second separation net, wherein the first separation net is fixedly installed at the air inlet end of the outer shell, and the second separation net is fixedly installed at the air outlet end of the outer shell, so that hair is prevented from entering the electric hair drier and blocking an air channel.
In one embodiment, the heating element is a PTC heating element, the PTC heating element has the advantages of small thermal resistance, high heat exchange efficiency, small power consumption and the like compared with a tungsten wire, and the phenomenon of 'red' on the surface of the tungsten wire can not be generated under any application condition, so that the material structure of the mica sheet fireproof support is omitted, and the situations of scalding and mica falling and blowing into eyes are avoided.
Drawings
FIG. 1 is a longitudinal section view of the hair dryer of the present invention;
fig. 2 is an explosion diagram of the electric hair drier of the utility model.
In the figure: 1. an outer housing; 2. an inner housing; 20. a flared part; 21. a first straight portion; 22. a necking part; 23. a second straight portion; 24. a first housing; 25. a second housing; 3. a heating element; 4. a fan assembly; 40. a motor; 41. a fan blade; 5. a thermally insulating cavity; 6. a hand-held handle; 60. an electrical cavity; 61. a third housing; 62. a fourth housing; 7. a temperature controller; 8. a fuse; 90. a first screen; 91. a second screen.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1-2, the electric hair drier comprises an outer shell 1, an inner shell 2, a heating element 3 and a fan assembly 4, wherein the inner shell 2 is inserted and fixed in the outer shell 1, and part of the outer peripheral wall of the inner shell 2 is separated from part of the inner peripheral wall of the outer shell 1 to form a heat insulation cavity 5; the air inlet end of the outer shell 1 is communicated with the air inlet end of the inner shell 2, and the air outlet end of the outer shell 1 is communicated with the air outlet end of the inner shell 2; the heating body 3 and the fan assembly 4 are fixed on the inner wall of the inner shell 2, and the position of the heating body 3 corresponds to the position of the heat insulation cavity 5.
On the basis of above-mentioned structure, be equipped with thermal-insulated chamber 5 between shell body 1 and the interior casing 2, the position of heat-generating body 3 with thermal-insulated chamber 5's position is corresponding, because the coefficient of heat conductivity of air is little, the event utilizes the air to carry out thermal-insulated effectual, consequently the heat that heat-generating body 3 produced transmits to shell body 1 on less, even consequently uses this hairdryer for a long time, the outer wall temperature of shell body 1 can not too high yet, reduces the danger that the user was scalded, has promoted user's use greatly and has experienced.
Preferably, in the present embodiment, the inner housing 2 includes a flared portion 20, a first flat portion 21, a constricted portion 22, and a second flat portion 23 connected in this order; the flared part 20 is close to the air outlet end of the outer shell 1, and the outer peripheral wall of the flared part 20, the outer peripheral wall of the first straight part 21 and the outer peripheral wall of the necking part 22 are separated from the inner peripheral wall of the outer shell 1 to form the heat insulation cavity 5; the heating element 3 is positioned on the inner wall of the first straight part 21, and the fan assembly 4 is fixedly installed on the inner wall of the second straight part 23; in the use, the air current gets into second straight portion 23, the velocity of flow increases behind throat 22, the air current after the velocity of flow increase gets into first straight portion 21, because heat-generating body 3 sets up in first straight portion 21, and the velocity of flow is big more the heat transfer effect is better, consequently, guarantee the temperature rise of air current and be unlikely to too high when promoting the heat transfer effect between air current and the heat-generating body 3, thereby the travelling comfort of this hairdryer air-out temperature has been guaranteed, simultaneously with the air current flow behind the heat-generating body 3 heat transfer flared portion 20, the velocity of air current descends, thereby the air-out noise of this hairdryer can be reduced, further improve user's use and experience.
In this embodiment, the inner case 2 is divided into a first case 24 and a second case 25 along the axial direction thereof, the first case 24 and the second case 25 are detachably connected, and the advantage of such design is that the user can conveniently disassemble, assemble and repair the heating element 3 and the fan assembly 4. It will be readily appreciated that the detachable connection may be a screw connection, a snap connection, or the like.
In this embodiment, the fan assembly 4 includes the motor 40 and with the flabellum 41 that the motor 40 transmission is connected, the motor 40 fixed mounting in the inner wall of second straight portion 23, the flabellum 41 sets up second straight portion 23 with between the air inlet end of shell body 1, the benefit of design like this is guaranteed that the flabellum 41 works under the lower environment of temperature, avoids the flabellum 41 to be heated and warp.
In this embodiment, the hair dryer further comprises a handheld handle 6 fixed on the outer wall of the outer shell 1, wherein the handheld handle 6 is provided with an electrical cavity 60 for mounting the circuit board of the hair dryer; so set up, this hairdryer of convenience of customers handheld uses, further promotes user's use experience.
In the embodiment, the hand-held handle is divided into a third shell 61 and a fourth shell 64 along the axial direction of the hand-held handle, and the third shell 61 is detachably connected with the fourth shell 64; the advantage of design like this is that convenience of customers is to carry out dismouting maintenance to the circuit board.
In this embodiment, the hair dryer further comprises a temperature controller 7 and a fuse 8 which are fixed on the outer wall of the first flat part 21, wherein the temperature controller 7, the fuse 8 and the heating element 3 are electrically connected in series; when the heating element 3 is overheated, the temperature controller 7 cuts off the power supply of the heating element 3, the temperature controller 7 is not powered on again after the temperature is reduced to enable the heating element 3 to continue working, and the fuse 8 is used as a permanent power off when the temperature controller 7 fails and is in short circuit in a limit state.
In this embodiment, the hair dryer further comprises a screen assembly; separate the net subassembly and include that first separate net 90 and second separate net 91, first separate net 90 installation and be fixed in the air inlet end of shell body 1, the second separates the net 91 installation and is fixed in the air-out end of shell body 1 avoids the hair to get into the inside wind channel that blocks up of hairdryer.
In this embodiment, the electric hair drier further comprises a first separation net 90 and a second separation net 91, wherein the first separation net 90 is fixedly installed at the air inlet end of the outer shell 1, and the second separation net 91 is fixedly installed at the air outlet end of the outer shell 1, so that hair is prevented from entering the electric hair drier and blocking an air channel.
In this embodiment, the heating element 3 is a PTC heating element, and the PTC heating element has the advantages of small thermal resistance, high heat exchange efficiency, small power consumption and the like compared with a tungsten filament, and does not generate the phenomenon of 'red color' on the surface of the tungsten filament under any application condition, so that the material structure of the mica sheet fireproof support is cancelled, and the situations of scalding and mica dropping and blowing into eyes are avoided.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.
Claims (9)
1. A hair drier is characterized in that: the heating device comprises an outer shell, an inner shell, a heating body and a fan assembly, wherein the inner shell is fixedly inserted into the outer shell, and the outer peripheral wall of part of the inner shell and the inner peripheral wall of part of the outer shell are separated to form a heat insulation cavity; the air inlet end of the outer shell is communicated with the air inlet end of the inner shell, and the air outlet end of the outer shell is communicated with the air outlet end of the inner shell; the heating element with the fan subassembly is fixed in the inner wall of interior casing, just the position of heating element with the position in thermal-insulated chamber corresponds.
2. A hair dryer according to claim 1, characterized in that: the inner shell comprises an expanding part, a first flat part, a reducing part and a second flat part which are connected in sequence; the flared part is close to the air outlet end of the outer shell, and the outer peripheral wall of the flared part, the outer peripheral wall of the first straight part and the outer peripheral wall of the necking part are separated from the inner peripheral wall of the outer shell to form the heat insulation cavity; the heating body is positioned on the inner wall of the first straight part, and the fan assembly is fixedly installed on the inner wall of the second straight part.
3. A hair dryer according to claim 2, characterized in that: the inner shell is divided into a first shell and a second shell along the axial direction of the inner shell, and the first shell is detachably connected with the second shell.
4. A hair dryer according to claim 2, characterized in that: the fan assembly comprises a motor and fan blades in transmission connection with the motor, the motor is fixedly mounted on the inner wall of the second straight portion, and the fan blades are arranged between the second straight portion and the air inlet end of the outer shell.
5. A hair dryer according to claim 2, characterized in that: still including the installation be fixed in the handheld handle of shell body outer wall, handheld handle is equipped with the electric cavity that is used for installing this hairdryer circuit board.
6. A hair dryer according to claim 5, characterized in that: the handheld handle is divided into a third shell and a fourth shell along the axial direction of the handheld handle, and the third shell is detachably connected with the fourth shell.
7. A hair dryer according to claim 2, characterized in that: still be fixed in including the installation temperature controller and the fuse of first straight portion outer wall, be series connection electric connection between temperature controller, fuse, the heat-generating body.
8. A hair dryer according to any of claims 1-7, characterized in that: the screen assembly is also included; the net separating component comprises a first net and a second net, the first net is fixedly mounted at the air inlet end of the outer shell, and the second net is fixedly mounted at the air outlet end of the outer shell.
9. A hair dryer according to any of claims 1-7, characterized in that: the heating element is a PTC heating element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020832784.5U CN212814939U (en) | 2020-05-11 | 2020-05-11 | Electric hair drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020832784.5U CN212814939U (en) | 2020-05-11 | 2020-05-11 | Electric hair drier |
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| Publication Number | Publication Date |
|---|---|
| CN212814939U true CN212814939U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020832784.5U Active CN212814939U (en) | 2020-05-11 | 2020-05-11 | Electric hair drier |
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| Country | Link |
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| CN (1) | CN212814939U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114081258A (en) * | 2021-11-16 | 2022-02-25 | 深圳市宝丽洁科技有限公司 | Electric hair drier |
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2020
- 2020-05-11 CN CN202020832784.5U patent/CN212814939U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114081258A (en) * | 2021-11-16 | 2022-02-25 | 深圳市宝丽洁科技有限公司 | Electric hair drier |
| CN114081258B (en) * | 2021-11-16 | 2024-07-23 | 深圳市宝丽洁科技有限公司 | Electric hair drier |
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