EP3501330A1 - Improved structure for hair dryer - Google Patents

Abstract

The present invention discloses an improved construction for hair dryers. The apparatus body of the hair dryer comprises a front device housing part, a rear device housing part, a tapered inner sleeve, a central tube, a heating unit, a power assembly and a fan. In particular, the present invention relates to a hair dryer in which the straight forward flowing airflow produced by the fan unit can be mixed with the outside ambient airflow so that the hair dryer has improved permeability in use and produces balanced cold and hot air. Due to the improved permeability, the drying process of the wet hair can be accelerated. Thanks to the function of mixing the heating air flow and the outside ambient air flow, the swirling airflow used as the airflow can be made to have a cool and ideal temperature rather than a hot and dry temperature, so that the user feels comfortable during the blowing process.

Description

Field of the invention

The present invention relates to an improved construction for hair dryers.

State of the art

The hair dryer is a commonly used household product and its construction is quite simple. In the device body, a fan unit and a heating unit are arranged. In use, the ambient air outside the apparatus body can be sucked into the apparatus body in the form of an air flow by means of the fan unit, thus producing a forward air flow. The forward air flow can be heated by means of the heating unit and thus converted into a hot air flow, then this is led out via the air outlet of the device body. The fan unit of the conventional hair dryer must be powered by a standardized motor product, ie the fan impeller of the fan unit must be driven by a motor unit. By the operation of the fan wheel, the outside ambient air can be introduced via the air inlet of the hair dryer in the form of an air flow in the interior of the hair dryer. In addition, a heater may be disposed in front of the fan unit and the motor unit. In this way, the heated forward air flow can be led out through the air outlet of the hair dryer. As a heater is usually a conventional device such as heating resistor and mica heater used. The internal structure of the conventional hair dryer can be seen that their design has changed little and is always the same, ie it must be a standardized motor used and the axis of the motor is connected to the fan of the fan unit. By such a design, the air supply function of the hair dryer can be easily achieved. In cooperation with the heating unit, the forward-directed air flow led out by this method has a hot and dry temperature. In use, the upper layer of hair tends to become dry and hot, leaving the lower layer still wet. In use, there are still deficiencies.

Object of the invention

It is an object of the present invention to provide an improved hair dryer structure in which the straight forward airflow generated by the fan unit can be mixed with the outside ambient airflow so that the hair dryer has improved permeability, generates a stronger airflow in use Reduces noise and produces balanced cold and hot air.

Based on this prior art, the following technical means are used in the present invention for achieving the above object:
An improved construction for hair dryers, wherein the apparatus body of the hair dryer comprises: a front device housing part, one end of which is provided with a closed surface, wherein a central annular seat with a central air outlet at the location of the central axis of the closed surface of the front device housing part is provided, wherein a plurality of spaced air guide plates are arranged on the outer circumference of the central annular seat, wherein a plurality of swirl air outlets are formed between the air guide plates, wherein a peripheral wall from the outer periphery of the closed surface extending above, wherein an opening is formed at the end of the peripheral wall; a rear housing body portion, one end of which is provided with a closed surface, wherein a central annular wall is provided with a central air inlet at the location of the central axis of the closed surface, wherein a plurality of outer ring air inlets pass through the outer periphery of the central annular wall a peripheral wall extending upwardly from the outer periphery of the closed surface, an opening being formed at the end of the peripheral wall; a tapered inner sleeve in which a flange extends outwardly from the end of the large aperture, a notch recess being recessed toward the other end from the flange, the tapered inner sleeve being disposed in the front device housing portion; a central tube having a first end and a second end, wherein a flow channel passes through the interior of the central tube, wherein the central tube is housed in the front device housing part, wherein the first end of the central tube rests against the central annular seat of the front device housing part; a heating unit, wherein the heating unit surrounds the central tube and is located inside the tapered inner sleeve; a power assembly made up of power accessories and a bearing; a fan having a front-to-rear central axial bore, one end of the fan having a blocking wall whose diameter tapers inwardly, the outer periphery of the fan being provided with a plurality of spaced vanes, the power assembly being in the central axial bore the fan is housed, wherein the bearing of the power assembly is applied to the blocking wall and disposed between the central tube and the fan. The tapered inner sleeve, central tube, heater, power assembly, and fan wheel are inserted through the opening in the front device housing part, then the rear device housing opening is combined with the front device housing opening to cover it, with the central annular wall of the rear device housing part firmly against the second end of the central tube.

Further, the air guide plates of the front device housing part each have a twisted, curved surface, whereby the inner air flow is converted into a forward-flowing fluidized air flow, wherein a straight Heizluftstrom and a circulating Heizluftstrom be blown through the fluidized air outlet.

Further, a plurality of spaced-apart ribs extending from the closed surface of the front device housing portion to the opening of the front device housing portion, disposed on the peripheral wall of the front device housing part, wherein a front handle portion extends from the peripheral wall of the front device housing part to the outside.

Further, a plurality of spaced radial rib plates are arranged on the inside of the closed surface of the rear device housing part, wherein the radial arrangement extends from the central annular wall outwardly to the peripheral wall of the rear device housing part, wherein a rear handle portion extends from the peripheral wall of the rear device housing part.

Further, when the tapered inner sleeve is inserted into the front device housing part, the flange of the tapered inner sleeve abuts the outer end of the ribs located in the front device housing part near the opening, and after insertion, a thermal insulation layer between the inner tapered sleeve and the peripheral wall of the front device housing part is provided, wherein a gap between the outer peripheral wall of the tapered inner sleeve and the ribs is provided, wherein an auxiliary part is arranged on the outer side of the notch recess of the tapered inner sleeve, wherein the auxiliary part for reinforced attachment of the tapered inner sleeve is used.

Further, as the heating unit, a mica heater or heating resistor is used, and the inner space of the tapered inner sleeve surrounding the outer periphery of the heating unit serves as a heating layer.

Further, one of the power assemblies of the power assembly is an annular coil winding, the other power accessory being a ring magnet, more specifically a magnetic ring.

In the improved hair dryer construction of the present invention, the structural design of the front device body, the rear body, the inner liner, the center tube, the heater, the power assembly, and the fan are used as follows: the tapered inner sleeve, the center tube, the heater, the power assembly, and the fan Fan wheel are inserted through the opening of the front housing body part in the front part of the device housing, then the opening of the rear device housing part with the opening the front device housing part combined, thus covering them, wherein the central annular wall of the rear device housing part rests firmly on the second end of the central tube. According to the construction described above, the fan wheel is driven by the power assembly for rotation so that an outside ambient air flow is sucked into the apparatus body and an internal air flow is generated in the hair dryer, said inner air flow is guided through the multi-guide ways constructive design of the device body, so that the In use, the hair dryer has improved penetrability, produces a stronger airflow, causes noise reduction and produces balanced cold and hot air, while effectively reducing the high internal temperature in the device body in a timely manner.

Brief description of the drawings

• Fig. 1 eine perspektivische Ansicht des erfindungsgemäßen Haartrockners im zusammengebauten Zustand;
• Fig. 2 eine perspektivische Explosionsansicht des erfindungsgemäßen Haartrockners;
• Fig. 3 eine perspektivische Querschnittansicht des erfindungsgemäßen Haartrockners;
• Fig. 4 eine perspektivische Querschnittansicht des vorderen Gerätegehäuseteils gemäß der vorliegenden Erfindung;
• Fig. 5 und 6 schematische Ansichten der Luftströmung des erfindungsgemäßen Haartrockners.

The drawings used to explain the embodiment show:

• Fig. 1 a perspective view of the hair dryer according to the invention in the assembled state;
• Fig. 2 an exploded perspective view of the hair dryer according to the invention;
• Fig. 3 a perspective cross-sectional view of the hair dryer according to the invention;
• Fig. 4 a perspective cross-sectional view of the front device housing part according to the present invention;
• Fig. 5 and 6 schematic views of the air flow of the hair dryer according to the invention.

LIST OF REFERENCE NUMBERS

10

device body

1

front device housing part

11

closed area

111

central annular seat

112

central air outlet

113

Air guide plate

114

Wirbelluftauslass

12

opening

13

peripheral wall

131

rib

14

front handle section

2

rear device housing part

21

closed area

211

central ring wall

212

central air intake

213

Bezel-air intake

214

rib plate

22

opening

23

peripheral wall

24

rear handle section

3

tapered inner sleeve

31

flange

32

notch recess

33

auxiliary part

4

central tube

41

first end

42

second end

43

flow channel

5

heating unit

6

power module

61

power Accessories

62

power Accessories

63

warehouse

64

gap

7

fan

70

central axial bore

71

blocking wall

72

wing

8th

Thermal insulation layer

81

gap

9

heating layer

A, B

heating air

C

heat-insulating airflow

D

Hot air stream

E, F

Outdoor ambient air flow

W

Vortex airflow

Detailed description of the embodiment

In order to provide a more detailed understanding of the structure of the present invention, will be on the Fig. 1 to 5 Referenced. The present invention provides an improved construction for hair dryers. The apparatus body 10 of the hair dryer comprises a front device housing part 1 and a rear device housing part 2, the two can be combined with each other to form an inner hollow body device 10, wherein a fan unit through which an external ambient air flow F sucked into the device body 10 and an internal air flow in the hair dryer is generated, and a heating unit 5 are housed in the device body, wherein the heating unit 5 can heat the cold air generated by the fan unit so that hot air is formed, then the hot air is blown through the air outlet of the device body 10.

One end of the front device housing part 1 is provided with a closed surface 11, wherein a central annular seat 111 is provided with a central air outlet 112 at the location of the central axis of the closed surface 11, wherein a plurality of spaced air guide plates 113 on the outer periphery of the central annular seat 111 are arranged, wherein the air guide plates 113 each have a twisted, curved surface, whereby vortex air outlets 114 are formed between the air guide plates 113, wherein a peripheral wall 13 extends from the outer periphery of the closed surface 11 upwards, wherein an opening 12 is formed at the end of the peripheral wall wherein a plurality of spaced ribs 131 extending from the closed surface 11 to the opening 12 are disposed on the peripheral wall 13 with a front grip portion 14 extending outwardly from the peripheral wall 13.

One end of the rear device housing part 2 is provided with a closed surface 21, wherein a central annular wall 211 with a central air inlet 212 at the location of the central axis of the closed surface 21 is provided, wherein a plurality of outer ring air inlets 213 pass through the outer periphery of the central annular wall 211, wherein a peripheral wall 23 extends from the outer periphery of the closed surface 21 upwards, wherein an opening 22 at the end of the peripheral wall 23 is formed, wherein a plurality of spaced radial rib plates 214 are arranged on the inside of the closed surface 21, wherein the radial arrangement extends from the central annular wall 211 outwardly to the peripheral wall 23, wherein a rear handle portion 24 extends from the peripheral wall 23.

In the tapered inner sleeve 3, a flange 31 extends from the end of the large opening to the outside, wherein a notch recess 32 is recessed from the flange 32 toward the other end, wherein an auxiliary part 33 is disposed on the outside of the notch recess 32, wherein the auxiliary part 33 for reinforced attachment of the tapered inner sleeve 3 is used. The tapered inner sleeve 3 is inserted into the front device housing part 1, with the flange 31 of the tapered inner sleeve 3 abutting the outer end of the ribs 131 located in the front device housing part 1 in the vicinity of the opening 12. After insertion, a heat insulating layer 8 is provided between the tapered inner sleeve 3 and the peripheral wall 13 of the front device housing part 1, with a gap 81 provided between the outer peripheral wall of the tapered inner sleeve 3 and the ribs 131 (see FIG. Fig. 3 ).

The central tube 4 has a first end 41 and a second end 42, wherein a flow channel 43 passes through the interior of the central tube 4. The central tube 4 is housed in the front device housing part 1, wherein the first end 41 of the central tube 4 rests against the central annular seat 111 of the front device housing part 1, wherein the central tube 4 within the tapered inner sleeve. 3 located.

As the heating unit 5, a mica heater, heating resistor, etc. can be used. The heating unit 5 surrounds the central tube 4 and is located within the tapered inner sleeve 3. The interior of the tapered inner sleeve 3, which surrounds the outer periphery of the heating unit 5, serves as a heating layer. 9

The power assembly 6 is composed of power accessories 61, 62 and a bearing 63, wherein the power accessory 61 is an annular coil winding and the power accessory 62 is a ring magnet, more specifically a magnetic ring, with the power accessory 62 located on the outer periphery of the power accessory 61.

The fan unit is a fan 7 having a front-to-rear central axial bore 70, one end of the fan 7 having a blocking wall 71 whose diameter tapers inwardly, the outer periphery of the fan 7 having a plurality of spaced apart blades 72 is provided. The power unit 6 is housed in the central axial bore 70 of the fan wheel 7, the bearing 63 of the power unit 6 abutting against the blocking wall 71 and being interposed between the central tube 4 and the fan wheel 7, with the above-mentioned power accessories 62 on the inner wall of the central axial bore 70 of the fan 7 is fixed, the other power accessory 61 is attached to the central tube 4, wherein a gap 64 is provided between the power accessories 61, 62, as in Fig. 5 shown.

The tapered inner sleeve 3, the central tube 4, the heating unit 5, the power assembly 6 and the fan 7 are via the opening 12 in the front device housing part 1, then the opening 22 of the rear device housing part 2 is combined with the opening 12 of the front device housing part 1, thus covering them, wherein the central annular wall 211 of the rear device housing part 2 firmly against the second end 42 of the central tube 4, as in the Fig. 2 and 3 is shown. It will open Fig. 5 Referenced. The fan 7 is driven by the power assembly 6 for rotation such that an outside ambient air flow F is sucked into the apparatus body 10 and an inner air flow is generated in the hair dryer, said inner air flow is guided through the multiple guide ways having structural design of the present invention, so that the Hair dryer in use has an improved penetrating ability, generates a stronger air flow, causes a noise reduction and produces balanced cold and hot air, the high internal temperature in the device body 10 can be effectively reduced in time. In the condition in which the hair dryer treats the hair, the permeability described in the present specification functions as follows: The forward-flowing swirl air flow of the present invention does not move straight forward and does not blow on the top layer of hair in a single straight direction but swirls forward, so that the invention achieves the function of penetrating the upper layer of hair and swirling penetration into the lower layer of the user's hair. The improved permeability can accelerate the drying process of wet hair. By virtue of the function of mixing the inner heating air flow B and the outer ambient air flow E, it is achieved that the swirling air flow W blown out through the central air outlet 112 or the air normally indicated by the user as lukewarm does not have a hot and dry temperature but an ideal cool temperature.

It will open Fig. 5 Referenced. When the fan 7 is driven to rotate by the power unit 6 so that an outside ambient airflow F is sucked into the apparatus body 10 via the outer ring air inlet 213 of the rear body 2, the sucked-in outside ambient airflow F is advanced and introduced into the tapered inner sleeve 3. At this time, a part of the outside ambient air flow F is introduced into the heat insulating layer 8 via the notch 32 of the tapered inner sleeve 3, ie the outside ambient air flow F circulates in the heat insulating layer 8 between the tapered inner sleeve 3 and the peripheral wall 13 of the front device housing part 1 and between tapered inner sleeve 3 and the ribs 131 located gap 81, thus forming a heat-insulating air flow C. It's going on at the same time Fig. 6 Referenced. By the heat-insulating airflow C, the internal heat can be dissipated in the apparatus body 10, wherein the other part of the outside ambient air flow F is introduced into the heating layer 9, ie the outside ambient air flow F circulates in the heating layer 9 located between the tapered inner sleeve 3 and the heating unit 5 thus forming a hot air flow D. When the hot air flow D is directed toward the closed face 11 of the front device housing part 1 and then through the fluidized air outlet 114, the forward flowing airflow through the twisted curved surface of the air guide plates 113 can be converted to a forwardly swirling airflow, with an approximately rectilinear flow Heating air flow A and a circulating heating air flow B are blown through the fluidized air outlet 114. The condition is in Fig. 5 shown. Here, the heating air flow B circulates around the outer periphery of the device body 10 around and then goes back into the device body 10, wherein the Heizluftstrom B the mixed outdoor ambient air flow E entrains in the central air inlet 212 and the flow channel 43 of the device body 10, then a vortex air stream W is blown through the central air outlet 112. The mixed fluidized air flow W therefore does not resemble the original hot air. The vortex air stream W exhausted via the central air outlet 112 is used as an air flow to give the user a cooler and more comfortable feeling. In addition, the guided through multiple routes forward airflow of the hair dryer can penetrate into the hair, so that the layered hair can be easily adjusted and dried.

In summary, the improved dryer construction of the present invention, when used by the multiple-pass forwarded airflow, has improved penetrability, creates a stronger airflow, provides noise reduction, and produces balanced cold and hot air, with the high internal temperature in the apparatus body 10 being effective in a timely manner can be lowered. In one of the guideways, the heating airflow B may be mixed with the outside ambient airflow E, such that the hair dryer has improved penetration capability in use and produces balanced cold and hot air. Due to the improved permeability, the drying process of the wet hair can be accelerated. Thanks to the function of mixing the heating air flow B and the outside ambient air flow E, the fluidizing air flow W used as the air flow can not be made to have a hot and dry temperature but an ideal cool temperature, so that the user feels comfortable during the blowing process is taught.

Claims (7)

Improved construction for hair dryers, characterized in that the apparatus body of the hair dryer comprises: a front device housing part, one end of which is provided with a closed surface, wherein a central annular seat is provided with a central air outlet at the location of the central axis of the closed surface of the front device housing part, wherein a plurality of spaced air guide plates arranged on the outer periphery of the central annular seat wherein a plurality of swirl air outlets are formed between the air guide plates, a peripheral wall extending upward from the outer periphery of the closed surface, an opening being formed at the end of the peripheral wall, a rear housing body portion, one end of which is provided with a closed surface, wherein a central annular wall is provided with a central air inlet at the location of the central axis of the closed surface, wherein a plurality of outer ring air inlets pass through the outer periphery of the central annular wall a peripheral wall extending upwardly from the outer periphery of the closed surface, an opening being formed at the end of the peripheral wall, a tapered inner sleeve in which a flange extends outwardly from the end of the large aperture, with a notch recess being recessed toward the other end from the flange, the tapered inner sleeve being disposed in the front device housing portion, a central tube having a first end and a second end, wherein a Flow channel passes through the interior of the central tube, wherein the central tube is housed in the front device housing part, wherein the first end of the central tube rests against the central annular seat of the front device housing part, a heating unit, wherein the heating unit surrounds the central tube and is located inside the tapered inner sleeve, a power assembly consisting of power accessories and a bearing, a fan having a front-to-rear central axial bore, one end of the fan having a blocking wall whose diameter tapers inwardly, the outer periphery of the fan being provided with a plurality of spaced vanes, the power assembly being in the central axial bore of the fan wheel is housed, wherein the bearing of the power assembly rests against the blocking wall and is arranged between the central tube and the fan wheel, wherein the tapered inner sleeve, the central tube, the heating unit, the power assembly and the fan are inserted through the opening in the front of the device housing part, then the opening of the rear housing body part with the opening of the front housing body part is combined so that it covers, wherein the central Ring wall of the rear device housing part firmly against the second end of the central tube. Improved construction for a hair dryer according to claim 1, characterized in that the air guide plates of the front device housing part each have a twisted, curved surface. Improved construction for a hair dryer according to claim 1, characterized in that that a plurality of spaced-apart ribs extending from the closed surface of the front device housing part to the opening of the front device housing part are arranged on the peripheral wall of the front device housing part, wherein a front handle portion extends outwardly from the peripheral wall of the front device housing part. An improved hairdryer assembly as claimed in claim 1, characterized in that a plurality of spaced radial ribbed plates are disposed on the inside of the closed surface of the rear housing body portion, the radial array extending outwardly from the central annular wall to the peripheral wall of the rear housing body portion, with a rearward Handle portion extends from the peripheral wall of the rear device housing part. An improved structure for a hair dryer according to claim 3, characterized in that , further, when the tapered inner sleeve is inserted into the front device housing part, the flange of the tapered inner sleeve abuts the outer end of the ribs located in the front device housing part near the opening, and after insertion a heat insulation layer is provided between the tapered inner sleeve and the peripheral wall of the front device housing part, a gap being provided between the outer peripheral wall of the tapered inner sleeve and the ribs, an auxiliary member being disposed on the outer side of the notch recess of the tapered inner sleeve, the auxiliary member for reinforced attachment the tapered inner sleeve is used. Improved construction for a hair dryer according to claim 1, characterized in that a mica heater or heating resistor is used as the heating unit, wherein the interior of the tapered inner sleeve, the outer circumference of the Heating unit surrounds, serves as a heating layer. An improved hairdryer assembly as claimed in claim 1, characterized in that one of the power assemblies of the power assembly is an annular coil winding, the other power accessory being a ring magnet.

Images