U.S. patent application number 16/539414 was filed with the patent office on 2020-04-30 for heater and hair drying apparatus.
This patent application is currently assigned to SOOCAS (SHENZHEN) TECHNOLOGY CO., LTD.. The applicant listed for this patent is SOOCAS (SHENZHEN) TECHNOLOGY CO., LTD.. Invention is credited to Xu CHEN, Fandi MENG.
Application Number | 20200128937 16/539414 |
Document ID | / |
Family ID | 70328092 |
Filed Date | 2020-04-30 |
View All Diagrams
United States Patent
Application |
20200128937 |
Kind Code |
A1 |
CHEN; Xu ; et al. |
April 30, 2020 |
HEATER AND HAIR DRYING APPARATUS
Abstract
The present disclosure relates to a heater and a hair drying
apparatus. The heater includes an inner layer including a first end
wall, a second end wall, a third end wall and a fourth end wall;
the first end wall is arranged opposite to the second end wall; the
third end wall is arranged opposite to the fourth end wall; the
third end wall and the fourth end wall are respectively connected
between the first end wall and the second end wall; and a heating
element arranged on the third end wall. Compared with mica
material, plastic material possesses better plastic performance
with greater hardness. By manufacturing the inner layer of the
heater using the plastic material, the inner layer is easier to be
set to alternative shapes and fixed to. Therefore, other structural
elements are easier to be mounted relative to the inner layer.
Inventors: |
CHEN; Xu; (Shenzhen, CN)
; MENG; Fandi; (Shenzhen, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SOOCAS (SHENZHEN) TECHNOLOGY CO., LTD. |
Shenzhen |
|
CN |
|
|
Assignee: |
SOOCAS (SHENZHEN) TECHNOLOGY CO.,
LTD.
Shenzhen
CN
|
Family ID: |
70328092 |
Appl. No.: |
16/539414 |
Filed: |
August 13, 2019 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
PCT/CN2019/087810 |
May 21, 2019 |
|
|
|
16539414 |
|
|
|
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A45D 20/12 20130101 |
International
Class: |
A45D 20/12 20060101
A45D020/12 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 31, 2018 |
CN |
201811298440.4 |
Claims
1. A heater, comprising: an inner layer, which is made of plastic
material, including a first end wall, a second end wall, a third
end wall and a fourth end wall; the first end wall is arranged
opposite to the second end wall; the third end wall is arranged
opposite to the fourth end wall; the third end wall and the fourth
end wall are respectively connected between the first end wall and
the second end wall; and a heating element arranged on the third
end wall.
2. The heater of claim 1, wherein the inner layer is of hollow
structure, the third end wall forming an external sidewall of the
inner layer, the fourth end wall forming an internal sidewall of
the inner layer.
3. The heater of claim 1, wherein the inner layer is of annular
structure, the third end wall and the fourth end wall respectively
extending along an axial direction of the inner layer, the heating
element winding around the third end wall.
4. The heater of claim 3, wherein the heater further comprises an
outer layer for insulating the heating element, the outer layer
being of annular structure and extending around the heating element
which is arranged between the third end wall and the outer
layer.
5. The heater of claim 4, wherein the outer layer includes a fifth
end wall, a sixth end wall, a seventh end wall and an eighth end
wall; the fifth end wall is arranged opposite to the sixth end
wall; the seventh end wall is arranged opposite to the eighth end
wall; the seventh end wall and the eighth end wall are respectively
connected between the fifth end wall and the sixth end wall, and
extend around the heating element which is arranged between the
third end wall and the eighth end wall.
6. The heater of claim 4, wherein the heater further comprises a
supporter for supporting the heating element, the supporter being
arranged on the third end wall, and extending towards the outer
layer along a radial direction of the inner layer.
7. The heater of claim 6, wherein at least one of the supporter and
the outer layer is made of insulating material.
8. The heater of claim 6, wherein a plurality of supporters are
provided and arranged at intervals around a circumferential
direction of the third end wall.
9. The heater of claim 8, wherein at least six supporters are
provided and arranged at intervals around the circumferential
direction of the third end wall.
10. The heater of claim 6, wherein the supporter provides a
locating opening for locating the heating element.
11. The heater of claim 10, wherein a plurality of locating
openings are provided and arranged along an identical line on the
supporter at intervals, the heating element including multiple
turns of coil, each turn being adjacent to another turn; the
multiple turns of coil of the heating element are respectively
located in the plurality of locating openings.
12. The heater of claim 11, wherein the coil is of zigzag shape or
of wave shape.
13. The heater of claim 12, wherein a maximum distance from the
coil to the third end wall is 6-9 mm.
14. The heater of claim 12, wherein the coil includes a first
bending portion and a second bending portion connected to each
other; the first bending portion and the second bending portion
both wind around the third end wall, a length of the second bending
portion along a circumference direction of the inner layer being
greater than that of the first bending portion along a
circumference direction of the inner layer.
15. The heater of claim 1, wherein the plastic material is any one
of polyphenyl ester, polybenzimidazole, polyboron diphenyl
siloxane, polyphenylene sulfide, chlorinated polyether.
16. A hair drying apparatus, comprising a heater which comprises:
an inner layer, which is made of plastic material, including a
first end wall, a second end wall, a third end wall and a fourth
end wall; the first end wall is arranged opposite to the second end
wall; the third end wall is arranged opposite to the fourth end
wall; the third end wall and the fourth end wall are respectively
connected between the first end wall and the second end wall; and a
heating element arranged on the third end wall.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of PCT application No.
PCT/CN2019/087810, filed on May 21, 2019, which claims priority of
Chinese Application No. 201811298440.4 filed on Oct. 31, 2018. The
patent applications are hereby incorporated by reference in their
entireties.
TECHNICAL FIELD
[0002] The present disclosure relates to the field of handheld
appliances, more particularly, to a heater and a hair drying
apparatus.
BACKGROUND
[0003] Hair dryers are mainly used for hair drying and hair
conditioning, and also applicable to local drying, heating and
physical therapy in laboratories, physical therapy rooms,
industrial manufacture and art design.
[0004] Existing heaters of the hair dryers mainly adopt an inner
layer made of mica material as a thermal insulation support
structure of heating elements thereof, however, the thermal
insulation support structure can only be presented in a fixed shape
for the limitation of the mica material, which makes it hard for
other structural elements to be mounted relative to the thermal
insulation support structure, thereby making the hair dryers hard
to meet the users' actual use requirements.
SUMMARY
[0005] Based on this, it is necessary to provide a heater and a
hair drying apparatus with simple structures and great bearing
adaptability performance.
[0006] A heater includes:
[0007] an inner layer, which is made of plastic material, including
a first end wall, a second end wall, a third end wall and a fourth
end wall; the first end wall is arranged opposite to the second end
wall; the third end wall is arranged opposite to the fourth end
wall; the third end wall and the fourth end wall are respectively
connected between the first end wall and the second end wall;
and
[0008] a heating element arranged on the third end wall.
[0009] In one embodiment, the inner layer is of hollow structure,
the third end wall forming an external sidewall of the inner layer,
the fourth end wall forming an internal sidewall of the inner
layer.
[0010] In one embodiment, the inner layer is of annular structure,
the third end wall and the fourth end wall respectively extending
along an axial direction of the inner layer, the heating element
winding around the third end wall.
[0011] In one embodiment, the heater further includes an outer
layer for insulating the heating element, the outer layer being of
annular structure and extending around the heating element which is
arranged between the third end wall and the outer layer.
[0012] In one embodiment, the outer layer includes a fifth end
wall, a sixth end wall, a seventh end wall and an eighth end wall;
the fifth end wall is arranged opposite to the sixth end wall; the
seventh end wall is arranged opposite to the eighth end wall; the
seventh end wall and the eighth end wall are respectively connected
between the fifth end wall and the sixth end wall, and extend
around the heating element which is arranged between the third end
wall and the eighth end wall.
[0013] In one embodiment, the heater further includes a supporter
for supporting the heating element, the supporter being arranged on
the third end wall, and extending towards the outer layer along a
radial direction of the inner layer.
[0014] In one embodiment, at least one of the supporter and the
outer layer is made of insulating material.
[0015] In one embodiment, a plurality of supporters are provided
and arranged at intervals around a circumferential direction of the
third end wall.
[0016] In one embodiment, at least six supporters are provided and
arranged at intervals around the circumferential direction of the
third end wall.
[0017] In one embodiment, the supporter provides a locating opening
for locating the heating element.
[0018] In one embodiment, a plurality of locating openings are
provided and arranged along an identical line on the supporter at
intervals, the heating element including multiple turns of coil,
each turn being adjacent to another turn; the multiple turns of
coil of the heating element are respectively located in the
plurality of locating openings.
[0019] In one embodiment, the coil is of zigzag shape or of wave
shape.
[0020] In one embodiment, a maximum distance from the coil to the
third end wall is 6-9 mm.
[0021] In one embodiment, the coil includes a first bending portion
and a second bending portion connected to each other; the first
bending portion and the second bending portion both wind around the
third end wall, a length of the second bending portion along a
circumference direction of the inner layer being greater than that
of the first bending portion along a circumference direction of the
inner layer.
[0022] In one embodiment, the plastic material is any one of
polyphenyl ester, polybenzimidazole, polyboron diphenyl siloxane,
polyphenylene sulfide, chlorinated polyether.
[0023] A hair drying apparatus includes the heater described
above.
[0024] Compared with mica material, plastic material possesses
better plastic performance with greater hardness. By manufacturing
the inner layer of the heater using the plastic material, the inner
layer, as the heat insulation support structure of the heating
elements, is easier to be set to alternative shapes and fixed to.
Therefore, other structural elements are easier to be mounted
relative to the inner layer which acts as the thermal insulation
support structure of the heating element, thereby substantially
improving the bearing adaptability performance.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[0025] In order to explain the technical solutions of the present
disclosure and of the prior art more clearly, the following
drawings required in the embodiment and the prior art will be
introduced briefly. Apparently, the following drawings merely
represent some embodiments of the present disclosure. For those
ordinarily skilled in the art, drawings which show alternative
embodiments may be derived from the following drawings without
paying creative works.
[0026] FIG. 1 is a structural view of a hair drying apparatus
according to an embodiment;
[0027] FIG. 2 is a cross-section view of the hair drying apparatus
shown in FIG. 1;
[0028] FIG. 3 is a structural view of a heating element of the hair
drying apparatus shown in FIG. 1;
[0029] FIG. 4 is a cross-section view of the heating element shown
in FIG. 3;
[0030] FIG. 5 is a local structural view of the hair drying
apparatus according to another embodiment;
[0031] FIG. 6 is another local structural view of the hair drying
apparatus shown in FIG. 5;
[0032] FIG. 7 is yet another local structural view of the hair
drying apparatus shown in FIG. 5;
[0033] FIG. 8 is a local exploded view of the hair drying apparatus
shown in FIG. 1;
[0034] FIG. 9 is a structural view of a first inner case of the
hair drying apparatus shown in FIG. 8;
[0035] FIG. 10 is a structural view of the first inner case and a
controller, which have been assembled, of the hair drying apparatus
shown in FIG. 8;
[0036] FIG. 11 is a cross-section view of the first inner case and
the controller, which have been assembled, shown in FIG. 10;
and
[0037] FIG. 12 is a structural view of a second inner case of the
hair drying apparatus shown in FIG. 8.
DETAILED DESCRIPTION OF ILLUSTRATED EMBODIMENTS
[0038] In order to better understand the present disclosure, the
application will be described more comprehensively in accompany
with associated drawings. The drawings merely provide preferable
embodiments. However, the present disclosure may be carried out in
various alternative ways, but not exclusive to the embodiments
described herein. Conversely, the embodiments provided in the
specification aim for more thorough understanding of the present
disclosure.
[0039] It should be understood that when an element is "fixed to"
another element, the element may be directly located on the other
element, alternatively, there may exist a third element
therebetween. When an element is "connected to" another element,
the element may be directly connected to the other element,
alternatively, there may exist a third element therebetween. The
terminologies such as "inner", "outer", "left", and "right" and the
like used herein are merely for illustration, but not referring to
exclusive implementations.
[0040] As shown in FIGS. 1-2, a hair drying apparatus 10 in one
embodiment includes a handle 100 and a main body 200. The main body
200 is connected to the handle 100. The handle 100 and the main
body 200 provide a first fluid channel 101 for fluid to flow
through. The handle 100 includes a first fluid inlet 112. The main
body 200 includes a first fluid outlet 222. The first fluid inlet
112 and the first fluid outlet 222 communicate with each other to
form the first fluid channel 101. The first fluid inlet 112 and the
first fluid outlet 222 are respectively designed for the fluid to
flow into and out of the first fluid channel 100.
[0041] As shown in FIG. 2, in one embodiment, the handle 100
includes a first end 110 and a second end 120 arranged opposite to
each other. The second end 120 of the handle 100 is connected to
the main body 200. The first fluid inlet 112 is arranged at the
first end 110 of the handle 100. The main body 200 includes a first
end portion 210 and a second end portion 220 arranged opposite to
each other. The first fluid outlet 222 is arranged at the second
end portion 220 of the main body 200.
[0042] Furthermore, in the present embodiment, the first fluid
channel 101 is not linear. The first fluid channel 101 includes a
first section 103 and a second section 105 communicated with each
other. An extension direction of the first section 103 is
perpendicular to that of the second section 105. The first section
103 is located inside the handle 100. The second section 105 is
located inside the main body 200. Therefore, the fluid flows along
the first section 103 of the first fluid channel 101 through the
handle 100, and then flows along the second section 105 of the
first fluid channel 101 through the main body 200.
[0043] As shown in FIG. 2, in one embodiment, the hair drying
apparatus 10 further includes a fan assembly 300. The fan assembly
300 is located inside the first fluid channel 101. In the present
embodiment, the fan assembly 300 is located in the first section
103 of the first fluid channel 101. The fan assembly 300 is
configured to suction the fluid, such that the fluid flows through
the first fluid inlet 112 and into the first fluid channel 101.
[0044] As shown in FIG. 2, in one embodiment, the main body 200
further includes a first fluid inlet 212 and a second fluid outlet
224. The first fluid inlet 212 and the second fluid outlet 224
communicate with each other to form a second fluid channel 201. The
second fluid inlet 212 and the second fluid outlet 224 are
respectively designed for another fluid to flow into and out of the
second fluid channel 201. In the present embodiment, the second
fluid inlet 212 is located at the first end portion 210 of the main
body 200. The second fluid outlet 224 is located at the second end
portion 220 of the main body 200.
[0045] While the fan assembly 300 is running, the fan assembly 300
suctions a fluid, such that the fluid flows through the first fluid
inlet 112 into the first fluid channel 101 and reaches the first
fluid outlet 222. The fluid flowing through the main body 200 and
out of the first fluid outlet 222 makes the other fluid at the
second fluid inlet 212 be suctioned and drawn into the second fluid
channel 201, and flows along the second fluid channel 201 towards
the second fluid outlet 224. The other fluid that flows out through
the second fluid outlet 224 and the fluid that flows out through
the first fluid outlet 222 converge at the second end portion 220
of the main body 200, increasing fluid outflow rate of the hair
drying apparatus 10.
[0046] As shown in FIG. 2, in one embodiment, the main body 200
includes a housing 230 and a tube body 240 passing through the
housing 230. The second fluid channel 201 is defined by the tube
body 240. The second fluid channel 201 extends within the tube body
240 from the second fluid inlet 212 to the second fluid outlet 224.
The second section 105 of the first fluid channel 101 is defined by
a gap between the tube body 240 and a sidewall of the housing 230.
A cross section of the first fluid outlet 222 is of annular shape.
The first fluid outlet 222 extends around the second fluid channel
201.
[0047] As shown in FIG. 2, in one embodiment, the hair drying
apparatus 10 further includes a heater 400. The heater 400 is
arranged inside the first fluid channel 101. In the present
embodiment, the heater 400 is located in the second section 105 of
the first fluid channel 101. The heater 300 extends around the tube
body 240. The heater 400 is configured to heat up the fluid within
the first fluid channel 101.
[0048] In the present embodiment, for illustrative purpose, an end
of the heater 400 close to the first fluid outlet 222 is defined as
a downstream end of the heater 400, the other end of the heater 400
distal to the first fluid outlet 222 defined as an upstream end of
the heater 400. The fluid flows through the first fluid inlet 112
into the first fluid channel 101 and flows from the upstream end of
the heater 400 through the downstream end of the heater 400, then
flows along the first fluid channel 101 and reaches the first fluid
outlet 222. Therefore, the heater 400 may selectively heat up the
fluid in the first fluid channel 101 directly. Furthermore, the
other fluid flowing through the second fluid channel 201 may also
be heated up indirectly by the heater 400.
[0049] As shown in FIGS. 3-4, in one embodiment, the heater 400
includes an inner layer 410 and a heating element 420. The inner
layer 410 is of annular structure. The inner layer 410 includes a
first end wall 412, a second end wall 414, a third end wall 416 and
a fourth end wall 418. The first end wall 412 is arranged opposite
to the second end wall 414. In the present embodiment, the first
end wall 412 is located at the downstream end of the heater 400.
The second end wall 414 is located at the upstream end of the
heater 400. The third end wall 416 is arranged opposite to the
fourth end wall 418. The third end wall 416 and the fourth end wall
418 are connected between the first end wall 412 and the second end
wall 414. The third end wall 416 and the fourth end wall 418
respectively extend around an axial direction of the inner layer
400. In one embodiment, the inner layer 410 is of hollow structure,
the third end wall 416 forming an external sidewall of the inner
layer 410, the fourth end wall forming an internal sidewall of the
inner layer 410.
[0050] The heating element 420 is configured to heat up the fluid
flowing therethrough. The heating element 420 is located at the
third end wall 416 of the inner layer 410. Specifically, the
heating element 420 is configured to generate thermal energy to
heat up the fluid flowing through the heating element 420 upon
electrified. The heating element 420 is single layered. The heating
element 420 winds around the third end wall 416 of the inner layer
410.
[0051] In the heater 400, the heating element 420 is configured to
be single layered such that overall size of the heater 400 is
reduced, which lessens obstacles for the fluid to flow through the
heater 400 and lowers flow loss of the fluid flowing through the
heater 400. On the other hand, since space for the fluid to flow
through the heater 400 is smaller, flow rate of the fluid is
faster, which improves use performance of the heater substantially
with features such as simple structure and small space
occupation.
[0052] In one embodiment, the inner layer 410 is made of plastic
material. In one embodiment, the plastic material is any one of
polyphenyl ester, polybenzimidazole, polyboron diphenyl siloxane,
polyphenylene sulfide, chlorinated polyether. Compared with mica
material, plastic material possesses better plastic performance
with greater hardness. By manufacturing the inner layer 410 of the
heater 400 using the plastic material, the inner layer 410, as a
heat insulation support structure of the heating elements 420, is
easier to be set to alternative shapes and fixed to. Therefore,
other structural elements are easier to be mounted relative to the
inner layer 410 which acts as the thermal insulation support
structure of the heating element 420, thereby substantially
improving the bearing adaptability performance of the heater
400.
[0053] As shown in FIG. 3, in one embodiment, the heater 400
further includes an outer layer 430 for insulating the heating
element 420. The outer layer 430 is of annular structure and
extends around the heating element 420. The heating element 420 is
located between the third end wall 416 of the inner layer 410 and
the outer layer 430. The outer layer 430 may provide heat
insulation for the heater 400 and structures for containing the
heater 400. Furthermore, the outer layer 430 may also limit radial
movement of the heating element 420 along the inner layer 410 to
some extent. In the present embodiment, the outer layer 430 is made
of insulation material. Preferably, the outer layer 430 is made of
mica.
[0054] As shown in FIG. 4, furthermore, the outer layer 430
includes a fifth end wall 432, a sixth end wall 434, a seventh end
wall 436 and an eighth end wall 438. The fifth end wall 432 is
arranged opposite to the sixth end wall 434. In the present
embodiment, the fifth end wall 432 is located at the downstream end
of the heater 400. The sixth end wall 434 is located at the
upstream end of the heater 400. The seventh end wall 436 is
arranged opposite to the eighth end wall 438. The seventh end wall
436 and the eighth end wall 438 are connected between the fifth end
wall 432 and the sixth end wall 434. The seventh end wall 436 and
the eighth end wall 438 respectively extend around the heating
element 420. The heating element 420 is located between a third end
wall 416 of the inner layer 410 and the eighth end wall 438 of the
outer layer 430.
[0055] As shown in FIG. 5, in one embodiment, the heater 400
further includes a supporter 440 for supporting the heating element
420. The supporter 440 is arranged on a third end wall 416 of the
inner layer 410, and extends along a radial direction of the inner
layer 410 towards the outer layer 430. In the present embodiment,
the supporter 440 is made of insulation material. Preferably, the
supporter 440 is made of mica.
[0056] As shown in FIGS. 6-7, furthermore, a plurality of
supporters 440 are provided and arranged at intervals along a
circumferential direction of the third end wall 416 so as to
improve bearing stability of the heating element 420. In one
embodiment, at least six supporters 440 are provided and arranged
at intervals around a circumferential direction of the third end
wall 416. Furthermore, the supporters 440 each provide a locating
opening 442 for locating the heating element 420. The locating
opening 442 is of zigzag shape. The heating element 420 is located
within the locating opening 442 of each supporter 440.
[0057] In one embodiment, the heating element 420 is a metal wire
which is constructed as zigzag or wave shape. The heating element
420 includes a plurality of turns of coil 422, one turn of coil
being adjacent to another one. A plurality of locating openings 442
are provided and arranged along an identical line on the supporters
440 at intervals. The multiple turns of coil 422 of the heating
element 420 are respectively located in the plurality of locating
openings 442 of the supporters, thereby insulating each of the
multiple turns of coil 422 of the heating element 420, and reducing
limitation to the fluid flowing through the heater 400.
[0058] In one embodiment, a maximum distance from the coil 422 to
the third end wall 416 is 6-9 mm, such that the coil 422 may be
avoided from moving relative to the third end wall 416 without
jeopardizing energy density of the coil 422, improving use
performance of the heater 400.
[0059] In one embodiment, the coil 422 includes a first bending
portion 4222 and a second bending portion 4224 connected to each
other; the first bending portion 4222 and the second bending
portion 4224 both wind around the third end wall 416, a length of
the second bending portion 4224 along a circumference direction of
the inner layer 410 being greater than that of the first bending
portion 4222 along the circumference direction of the inner layer
410. By the structural configuration above, the space between the
coil 422 and the third end wall 416 may be extended, thereby
leaving space for other elements to mount between the coil 422 and
the third end wall 416.
[0060] In one embodiment, the heating element 420 includes at least
two separated heating units. The heating units are configured to
generate thermal energy upon electrified. The configuration allows
users to control each of the heating units independently.
Therefore, for a low-temperature configuration, merely one of the
heating units is needed. When one of the heating units is damaged,
the heater 400 may still operate normally, which substantially
improve use performance of the heater 400.
[0061] Furthermore, in the present embodiment, the heating element
420 includes two separated heating units. It is understood that in
alternative embodiments, the number of the heating units may be
three or more than three. Specific configuration may be selected
properly based on actual condition. In the present embodiment, each
heating unit includes a plurality of turns of coil 422, each turn
being adjacent to another one.
[0062] As shown in FIGS. 6-7, in one embodiment, the hair drying
apparatus 10 further includes a temperature detector 500. The
temperature detector 500 is arranged inside the first fluid channel
101. The temperature detector 500 includes but not limited to a
thermistor. The temperature detector 500 is configured to detect
temperature of the fluid within the first fluid channel 101. When
the first fluid inlet 112 or the first fluid outlet 222 of the
first fluid channel 101, inside which the heater 400 is located, is
blocked, since fluid flowing around the heating element 420 is
limited, the thermal energy cannot be carried away from the heating
element 420 by the fluid timely, resulting in overheating of the
heating element 420. The temperature detector 500 may detect
temperature of the fluid inside the first fluid channel 101 timely.
Users may detect whether the heating element 420 is overheated
based on detection result, thereby heating the fluid in the first
fluid channel 101 controlled by the heater 400 with precise
control, and making sure that the hair drying apparatus 10 be used
properly.
[0063] Furthermore, in the present embodiment, the temperature
detector 500 is arranged at the downstream end of the heater 400.
Specifically, the temperature detector 500 is arranged on the first
end wall 412 of the inner layer 410. The temperature detector 500
is configured to detect temperature of the fluid between the heater
400 and the first fluid outlet 222. Since temperature of the fluid
between the heater 400 and the first fluid outlet 222 is closer to
the temperature of actual outflow fluid of the hair drying
apparatus 10, the temperature detector 500 may use the temperature
of the fluid between the heater 400 and the first fluid outlet 222
as a reference standard for temperature detection by arranging the
temperature detector 500 at the downstream end of the heater 400,
thereby heating the fluid in the first fluid channel 101 controlled
by the heater 400 with precise control.
[0064] As shown in FIGS. 6-7, in one embodiment, the hair drying
apparatus 10 further includes a first over-temperature protector
600. The first over-temperature protector 600 is arranged inside
the first fluid channel 101 and electrically connected to the
heating element 420. The first over-temperature protector 600
includes but not limited to an elastic metal sheet. The first
over-temperature protector 600 is configured to disconnect access
of power source to the heating element 420 once the temperature of
the fluid in the first fluid channel 101 reaches a first preset
threshold, and to connect the power source to the heating element
420 once the temperature of the fluid in the first fluid channel
101 falls below the first preset threshold.
[0065] The first over-temperature protector 600 is normally not
affected by the fluid flowing therethrough, however, when the first
fluid inlet 112 or the first fluid outlet 122 of the first fluid
channel 101 is blocked, the temperature of the fluid inside the
first fluid channel will rise. When the temperature of the fluid in
the first fluid channel 101 reaches the first preset threshold, the
first over-temperature protector 600 disconnects access of power
source to the heating element 420; when the temperature of the
fluid in the first fluid channel 101 falls below the first preset
threshold, the first over-temperature protector 600 reconnects the
power source to the heating element 420, thereby heating the fluid
in the first fluid channel 101 controlled by the heater 400
effectively, and making sure that the hair drying apparatus 10
possesses safe use performance.
[0066] In the present embodiment, the first over-temperature
protector 600 is arranged between the third end wall 416 of the
inner layer 410 and the heating element 420. Specifically, the
first over-temperature protector 600 is embedded in the third end
wall 416 of the inner layer 410. Since temperature of the fluid
inside the heating element 420 is relatively even, by arranging the
first over-temperature protector 600 inside the heating element
420, the first over-temperature protector 600 may utilize the
temperature of the fluid inside the heating element 420 as a
temperature standard for determining whether disconnecting or
connecting access of the power source to the heating element 420,
thereby heating up the fluid inside the first fluid channel 101
controlled by the heater 400 with precise control.
[0067] As shown in FIGS. 6-7, in one embodiment, the hair drying
apparatus 10 further includes a second over-temperature protector
700. The second over-temperature protector 700 is located in the
first fluid channel 101, and electrically connected to the heating
element 420. The second over-temperature protector 700 includes but
not limited to a thermofuse. The second over-temperature protector
700 is configured to disconnect access of power source to the
heating element 420 once the temperature of the fluid in the first
fluid channel 101 reaches a second preset threshold.
[0068] Furthermore, the second preset threshold is higher than the
first preset threshold. When the first over-temperature protector
600 does not work and the temperature of the fluid inside the first
fluid channel 101 reaches the second preset threshold, the second
over-temperature protector 700 may disconnect access of power
source to the heating element 420, thereby controlling the heater
400 to heat up the fluid inside the first fluid channel 101 more
effectively, ensuring safety performance of the hair drying
apparatus 10.
[0069] In the present embodiment, the second over-temperature
protector 700 is embedded in the third end wall 416 of the inner
layer 410, and within the heating element 420. Similar to the
configuration of the first over-temperature protector 600,
arranging the second over-temperature protector 700 inside the
heating element 420 allows the second over-temperature protector
700 to use the temperature of the fluid inside the first fluid
channel 101 as a temperature standard for determining whether
disconnecting or connecting the access of the power source to the
heating element 420, thereby heating up the fluid inside the first
fluid channel 101 controlled by the heater 400 with precise
control.
[0070] As shown in FIG. 8, in one embodiment, the hair drying
apparatus 10 further includes a controller 800. The controller 800
is arranged in the first fluid channel 101, and within the handle
100. Since the controller 800 is located within the first fluid
channel 101 and within the handle 100, while the fluid is flowing
through the first fluid channel 101 within the handle 100, the
fluid may carry away thermal energy generated by the controller 800
timely for heat dissipation of the controller 800, avoiding
arranging additional radiators for heating dissipation of the
controller 800 within the handle 100 or the main body 200, reducing
the number of elements of the hair drying apparatus 10, and hence
reducing production cost.
[0071] It should not that in the present embodiment, the controller
800 is electrically connected to the fan assembly 300 and the
heater 400. The controller 800 may control heating temperature of
the heater 400 and rotation rate of the fan assembly 300.
Furthermore, the controller 800 is electrically connected to the
temperature detector 500. The controller 800 may control the
heating temperature of the heater 400 based on detection result of
the temperature detector 500.
[0072] As shown in FIGS. 9-11, in one embodiment, a locating slot
150 is arranged in the inner sidewall of the handle 100. The
controller 800 is contained in the locating slot 150. Two opposite
inner sidewalls of the locating slot 150 are provided with clips
160. The clips 160 are configured to press against two ends of the
controller 800 to fix the controller 800 to a bottom wall of the
locating slot 150.
[0073] Furthermore, two opposite inner sidewalls of the locating
slot 150 are respectively provided with a plurality of clips 160
for improving mounting stability of the controller 800 inside the
locating slot 150. In the present embodiment, two clips 160 are
respectively arrange on each of the two opposite sidewalls of the
locating slot 150. Four clips 160 respectively press against four
corners of the controller 800. It should be understood that, the
number of the clips 160 arranged on each of the two opposite
sidewalls of the locating slot 150 may be three or more than three.
Specific configuration may be selected properly based on actual
condition.
[0074] As shown in FIG. 8, in one embodiment, the controller 800
includes a first controller 820 and a second controller 840. The
first controller 820 is electrically connected to the second
controller 840. In the present embodiment, the controller 800 is of
separated structure, such that the structure of the controller 800
is more compact, thereby making full use of the space within the
handle 100, reducing size of the controller 800 along one single
direction, hence reducing the size of the hair drying apparatus
100. Furthermore, if one of the first controller 820 and the second
controller 840 is damaged, merely the damaged one requires to be
amended, which reduces maintenance cost substantially. Furthermore,
in the present embodiment, the first controller 820 is arranged
opposite to the second controller 840.
[0075] It should be understood that in one embodiment, the
controller 800 further includes a connector. The first controller
820 is connected to the second controller 840 through the
connector. In one embodiment, the connector is a pin header. In one
embodiment, the connector includes a pin header and a female head
matched with the pin header in plug-in mode. The first controller
820 is fixed relative to the second controller 840 through the
connector, such that when the controller 800 and the handle 100 is
assembled, merely one of the first controller 820 and the second
controller 840 requires to be fixed to the handle 100.
[0076] As shown in FIG. 8, it is worth mentioning that in the
present embodiment, the first controller 820 and the second
controller 840 are both cuboid, which lowers production complexity
and improves production efficiency. In other embodiments, the first
controller 820 and the second controller 840 may be of other
shapes, such as with cross-section shapes such as circular and
elliptical.
[0077] As shown in FIG. 8, in one embodiment, the handle 100
includes an inner case 130. The inner case 130 is connected to the
main body 200. The inner case 130 includes a first inner case 132
and a second inner case 134 clipped to each other. The first inner
case 134 and the second inner case 134 are clipped together to form
the first fluid channel 101 of the handle 100, which is the first
section 103 of the first fluid channel 101. The locating slot 150
is located within an inner sidewall of one of the first inner case
132 and the second inner case 134. An extension direction of the
locating slot 150 is parallel to that of the first section 103 of
the first fluid channel 101. In one embodiment, the handle 100
further includes an outer case 140. The outer case 140 sheaths
around the inner case 130 and connects with the main body 200.
[0078] As shown in FIGS. 8-10, in one embodiment, the hair drying
apparatus 10 further includes a protection cover 900. The
protection cover 900 covers the controller 800. The configuration
of the protection cover 900 may protect the controller 800 to some
extent, such that the fluid within the first fluid channel 101 of
the handler 100 flows around the controller 800. On the other hand,
when one or more elements of the controller 800 are damaged, the
protection cover 800 may act as a baffle, such that the damaged
elements of the controller 800 may be blocked from entering the
first fluid channel 101 of the main body 200.
[0079] As shown in FIG. 10, in one embodiment, one end of the
protection cover 900 is arranged with a bevel 920. An angle exists
between the bevel 920 and an extension direction of the handle 100.
The configuration performs a guiding function for the fluid to flow
within the first fluid channel 101 and through the protection cover
900, thereby reducing turbulence within the first fluid channel 101
for perpendicular change of flowing direction while the fluid is
flowing through the protection cover 900, thereby reducing
noise.
[0080] As shown in FIGS. 9-10, in the present embodiment, the
locating slot 150 is arranged within the inner sidewall of the
first inner case 132. An inner sidewall of the first inner case 132
is further provided with a stopper 170. The controller 800 includes
a capacitor 860 embossing and extending towards the second inner
case 134. Specifically, the capacitor 860 is arranged on a side of
the second controller 840 away from the first controller 820. The
protection cover 900 is stopped and limited between the stopper 170
and the capacitor 860.
[0081] As shown in FIG. 12, furthermore, an inner sidewall of the
second inner case 134 is provided with a crimping element 180. The
crimping element 180 may crimp the protection cover 900 such that
the protection cover 900 is fixed to the controller 800.
Specifically, there exist a plurality of crimping elements 180. The
plurality of crimping elements 180 are arranged on the inner
sidewall of the second inner case 134 in an array arrangement,
thereby improving crimping stability of the protection cover 900
relative to the controller 800.
[0082] Technical features described in the above embodiments may be
combined in any way. For brief description, not all possible
combinations of the technical features in the above embodiments are
described. However, as long as there is no contradiction
therebetween, the combinations should be considered as falling into
the scope of this manual.
[0083] The above embodiments are merely for illustrating several
embodiments of the present invention, and the description thereof
is more specific and detailed. However, this should not be deemed
as constructing limitation of the scope of the invention. It should
be noted that numerous variations and modifications may be made by
those skilled in the art without departing from the spirit and
scope of the invention. Therefore, the scope of the invention
should be determined by the appended claims.
* * * * *