CN112869327A - Air duct system of hair drier - Google Patents
Air duct system of hair drier Download PDFInfo
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- CN112869327A CN112869327A CN202110085388.XA CN202110085388A CN112869327A CN 112869327 A CN112869327 A CN 112869327A CN 202110085388 A CN202110085388 A CN 202110085388A CN 112869327 A CN112869327 A CN 112869327A
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- air
- air inlet
- duct system
- handle portion
- hole
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D20/00—Hair drying devices; Accessories therefor
- A45D20/04—Hot-air producers
- A45D20/08—Hot-air producers heated electrically
- A45D20/10—Hand-held drying devices, e.g. air douches
- A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D20/00—Hair drying devices; Accessories therefor
- A45D20/04—Hot-air producers
- A45D20/08—Hot-air producers heated electrically
- A45D20/10—Hand-held drying devices, e.g. air douches
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D2200/00—Details not otherwise provided for in A45D
- A45D2200/20—Additional enhancing means
- A45D2200/202—Ionisation
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- Cleaning And Drying Hair (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides an air duct system of a blower, comprising: a handle portion having an air intake passage formed therein; the air duct part is internally provided with an air outlet channel; the motor fan assembly is arranged in the handle part; the circuit board is arranged in the handle part at the downstream of the air outlet end of the motor fan assembly and divides the air inlet channel into at least two air channels; the air duct part is internally provided with a guide piece positioned at the communication position of the air outlet channel and the air inlet channel, and the guide piece is provided with a guide surface inclined relative to the air inlet channel and the air outlet channel so as to guide the air flow in the double air ducts to enter the air outlet channel through the guide surface respectively. When the air current blows to the guiding piece from two wind channels, the guiding piece has the guide face for inlet air channel and air-out passageway slope, can guide two strands of air currents in two wind channels to get into the air-out passageway through the guide face respectively, forms the coanda effect, and the air current reaches the effect that promotes wind-force in wind channel corner rounding off, still has noise reduction effect.
Description
Technical Field
The invention relates to the field of hair care equipment, in particular to an air duct system of a blower.
Background
The hair dryer is mainly used for drying and shaping hair, but also can be used for local drying, heating and physical therapy in laboratories, physical therapy rooms, industrial production, art designing and the like. The blower is usually provided with heating wires, a motor and a fan inside, the motor directly drives a rotor to drive the fan blades to rotate, when the fan blades rotate, air is sucked from the air inlet, and centrifugal airflow formed by the air inlet is blown out from the front nozzle of the air duct. When the air passes through, if the heating wires on the heating bracket in the air nozzle are electrified to become hot, hot air is blown out; if the selection switch does not electrify the heating wire to generate heat, cold air is blown out. When the existing hair drier is used, when the fan speed is high, squeaking phenomena can be generated during air inlet and air outlet, and the noise of the hair drier is relatively large; meanwhile, the rotating speed of the fan is high, so that the heat productivity of the power device is large, and the heat dissipation effect is poor; in addition, as the application range of the hair dryer is continuously expanded, the wind power of the hair dryer needs to be further improved.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an air duct system of a blower, which has the advantages that the internal structure is reasonably designed, the noise is reduced, the heat dissipation effect of a power device is improved, and the wind power is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a blower ducting system comprising:
a handle portion in which an air intake passage extending in a first direction is formed;
the air cylinder part is internally provided with an air outlet channel extending along a second direction, the second direction is different from the first direction, and the air outlet channel is communicated with the air inlet channel;
a motor-fan assembly disposed within the handle portion;
the circuit board is arranged in the handle part and is arranged at the downstream of the air outlet end of the motor fan assembly and extends along the length direction of the handle part so as to divide the air inlet channel into at least two air channels;
the air duct part is internally provided with a guide piece positioned at the communication position of the air outlet channel and the air inlet channel, and the guide piece is provided with a guide surface inclined relative to the first direction and the second direction so as to guide the air flow in the double air ducts to respectively enter the air outlet channel through the guide surface.
Preferably, the circuit board divides the air inlet channel into two air ducts with equal cross-sectional areas.
Preferably, the circuit board divides the air inlet channel into two air ducts with unequal cross-sectional areas.
Preferably, the center axis of the guide surface is located between the center axis of the handle portion and the center axis of the wind cylinder portion.
Preferably, the air duct portion includes a first duct and a second duct, the first duct and the second duct are mutually buckled, and the air outlet passage is located in the first duct.
Preferably, an inner cylinder is arranged in the second cylinder, the guide piece is sleeved on the inner cylinder, and the guide surface is an annular surface.
Preferably, handle portion still includes the air inlet board, the air inlet board cartridge in the air inlet end of handle portion, the air inlet board with be equipped with one section between the air inlet end of motor fan subassembly and fall the interval of making an uproar, set up a plurality of through-holes on the air inlet board, the axis of every through-hole is on a parallel with the axis of handle portion or for the axis slope of handle portion.
Preferably, the inner diameter of each through hole is 0.3-1.6mm, the distance between every two adjacent through holes is 0.1-0.5mm, and the distance between the air inlet plate and the air inlet end of the motor fan assembly is 28-35 mm.
Preferably, the inner diameter of each through-hole is 0.6-1.2 mm.
Preferably, the handle portion includes a first cover and a second cover, and the first cover and the second cover are fastened to each other.
Preferably, the tail end of the first cover body is provided with an insertion hole, the tail end of the second cover body is correspondingly provided with an insertion groove, the inner end of the air inlet plate is embedded into the insertion groove, and the outer end of the air inlet plate is located in the insertion hole.
Preferably, a notch is formed in one corner of the outer end of the air inlet plate, and an auxiliary hole is formed beside the notch; the outer wall of the first cover body corresponds to two sides of the insertion hole are provided with a first blocking strip and a second blocking strip, the extension length of the first blocking strip is equal to the extension length of the outer end of the air inlet plate, the extension length of the second blocking strip is smaller than the extension length of the first blocking strip, and the auxiliary hole is exposed out of the end portion of the second blocking strip.
Preferably, the motor fan subassembly with correspond between the air inlet plate be equipped with the cotton installing zone of first amortization on the first lid, the motor fan subassembly with correspond between the air inlet plate be equipped with the cotton installing zone of second amortization on the second lid, the cotton installing zone of first amortization the cotton installing zone of second amortization all is used for installing the amortization cotton.
Preferably, the motor fan subassembly includes motor fan and shock pad, motor fan locates the inside of handle portion, motor fan's fan blade orientation the air inlet plate, the shock pad wrap up in motor fan's the outside, the lateral surface of shock pad with the inner wall laminating of handle portion, the medial surface of shock pad with motor fan's cylinder side laminating.
Preferably, still include heating element, heating element includes thermal-insulated support, heater and temperature sensor, thermal-insulated support is located the inside of first barrel, the air-out side of thermal-insulated support is equipped with annular air outlet, the heater is located on the thermal-insulated support, temperature sensor locates the heater orientation one side of air outlet.
Preferably, the heat insulation support comprises a flow guide part, an inner tube and a connecting piece, the flow guide part is in a shape of a circular truncated cone side face, a small-diameter end of the flow guide part faces an air outlet end of the first cylinder, the connecting piece is connected between the small-diameter end of the flow guide part and an air outlet side end part of the inner tube along the radial direction of the inner tube, and an air inlet side end part of the inner tube is in butt joint with the inner tube.
Preferably, the heater cover is located on the inner tube, the heater includes inner circle, outer lane, connecting plate and heater strip, the outer lane with the inner circle is coaxial to be set up, the connecting plate is followed the radial connection of inner circle in the inner circle with between the outer lane, the heater strip is crooked form edge the circumference of inner circle twines in on the connecting plate.
Preferably, the tail end of the handle portion is provided with at least a first wire clamping hole and a second wire clamping hole, the first wire clamping hole and the second wire clamping hole are overlapped in the length direction of the handle portion, the axis of the first wire clamping hole is not overlapped with the axis of the second wire clamping hole, and a stepped wire clamping structure is formed at the transition position of the first wire clamping hole and the second wire clamping hole.
Preferably, the second card line hole is located the inboard in first card line hole, the inside of handle portion corresponds to the inboard in second card line hole still is equipped with branch line groove, the inner wall both sides of handle portion are equipped with the trough, both sides the trough respectively with branch line groove intercommunication.
Preferably, the air duct system of the hair dryer further comprises a circuit board, the circuit board is sleeved on the inner tube, and the circuit board is electrically connected with the circuit board.
Preferably, the air duct system of the hair dryer further comprises an anion assembly, the anion assembly comprises an anion generator and a discharge end, the anion generator is arranged on the circuit board, and the discharge end extends to the air outlet.
Preferably, the air duct system of hair-dryer still includes display module, display module includes light emitting component and leaded light post, light emitting component locates on the circuit board, the leaded light post is located light emitting component with between the second barrel, the leaded light post corresponds the department the thickness attenuate of second barrel.
Preferably, the air duct system of the hair dryer further comprises an adjusting component, the adjusting component comprises a key and a sealing gasket, the key is connected with the circuit board and exposed out of the second barrel, and the sealing gasket is arranged at the contact position of the key and the second barrel.
Preferably, the handle portion further includes a handle sleeve, and the handle sleeve is sleeved outside the first cover body and the second cover body.
Compared with the prior art, the invention has the beneficial effects that:
1. the circuit board divides the air inlet channel into double air channels, when the air flow blows to the guiding piece from the double air channels, the guiding piece is provided with a guiding surface which is inclined relative to the air inlet channel and the air outlet channel, the two air flows of the double air channels can be guided to enter the air outlet channel through the guiding surface respectively, a coanda effect is formed, the air flow is in smooth transition at the corners of the air channels, the effect of improving the wind power is achieved, and the noise reduction effect is also achieved; in addition, if the air inlet channel is divided into uneven double air channels, the pressure on two sides of the air flow blown to the guide piece is inconsistent, and rotary air flow can be formed in the air outlet channel, so that the wind power is further improved; the high-power device is arranged on the circuit board, and the airflow passing through the double air ducts can dissipate heat of the power device, so that the heat dissipation effect is good;
2. the tail end of the handle part is provided with the air inlet plate, the air inlet plate is provided with a plurality of through holes, and the noise of the hair drier in use can be effectively reduced by reasonably designing the inner diameter of the through holes, the distance between two adjacent through holes and the distance between the air inlet plate and the air inlet end of the motor fan; the air inlet plate can be made of a common PCB or other suitable materials, so that the manufacturing cost is low and the manufacturing process is simple;
3. the air inlet plate is of a plug-in type structure, a first cover body of the handle part is provided with plug-in holes, a second cover body is provided with plug-in grooves, and the air inlet plate can be accurately plugged into the tail end of the handle part; the auxiliary holes on the air inlet plate are exposed, so that the air inlet plate is convenient to replace;
4. the first cover body is provided with a first silencing cotton mounting area, and the second cover body is provided with a second silencing cotton mounting area which are respectively used for mounting silencing cotton, so that noise transmission is reduced; the damping pad is wrapped outside the motor fan to further reduce noise;
5. handle portion end sets up first card line hole and second card line hole, and the axis in first card line hole does not coincide with the axis in second card line hole, and the transition department in first card line hole and second card line hole forms step form card line structure, consequently can utilize handle portion's self structure to fix the tail end at handle portion with the power cord chucking, improves power cord firm in connection degree, avoids using extra part simultaneously, saves manufacturing cost and manufacturing procedure.
Drawings
FIG. 1 is a schematic external view of a hair dryer according to embodiment 1 of the present invention;
figure 2 is an exploded view of a hair dryer according to embodiment 1 of the present invention;
FIG. 3 is a schematic view showing the internal structure of a hair dryer according to embodiment 1 of the present invention;
FIG. 4 is a schematic view of a blower according to embodiment 1 of the present invention with a front cover removed;
figure 5 is an exploded view of a heating unit in a hair dryer according to embodiment 1 of the present invention;
fig. 6 is an exploded view of an air inlet plate of a hair dryer according to embodiment 1 of the present invention;
FIG. 7 is an enlarged view of the structure at A in FIG. 6;
FIG. 8 is a schematic view of a structure of a blower according to embodiment 1 of the present invention assembled at an air inlet plate;
fig. 9 is a schematic view of a structure of a wire-fastening structure in a hair dryer according to embodiment 1 of the present invention;
figure 10 is an electrical schematic of a blower of the present invention;
figure 11 is an electrical schematic of a heater in a hair dryer of the present invention;
figure 12 is a schematic view of a blower according to embodiment 2 of the present invention with the front cover removed;
figure 13 is a simplified schematic view of a wire trap structure in a hair dryer according to embodiment 3 of the present invention;
figure 14 is a simplified schematic diagram of a bayonet structure in a hair dryer according to embodiment 4 of the present invention.
In the figure, 100-a blower, 10-a handle part, 11-a first cover body, 111-an insertion hole, 112-a first barrier strip, 113-a second barrier strip, 114-a first silencing cotton mounting area, 12-a second cover body, 121-an insertion groove, 122-a second silencing cotton mounting area, 13-an air inlet cover, 14-a filter screen, 15-an air inlet plate, 151-a through hole, 152-a notch, 153-an auxiliary hole, 16-a first wire clamping hole, 17-a second wire clamping hole, 18-a handle sleeve, 191-a wire distribution groove, 192-a wire distribution groove, 20-a wind barrel part, 21-a first barrel body, 22-a second barrel body, 221-an inner barrel, 23-a sealing ring, 31-a circuit board, 32-a circuit board, 40-a motor fan assembly and 41-a motor fan, 411-fan blades, 42-shock absorption pads, 50-guide pieces, 51-guide surfaces, 60-heating components, 61-heat insulation supports, 611-flow guide parts, 412-inner pipes, 413-connecting pieces, 614-air outlets, 62-heaters, 621-inner rings, 622-outer rings, 623-connecting plates, 624-heating wires, 63-temperature sensors, 64-fusing fuses, 70-negative ion components, 71-negative ion generators, 72-discharging ends, 80-display components, 81-light emitting elements, 82-light guide columns, 90-adjusting components, 91-buttons and 92-sealing gaskets.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Referring to fig. 1 to 3, fig. 1 is a schematic external structural view of a hair dryer according to embodiment 1 of the present invention; figure 2 is an exploded view of a hair dryer according to embodiment 1 of the present invention; FIG. 3 is a schematic view showing the internal structure of a hair dryer according to embodiment 1 of the present invention; the air duct system of a blower 100 of the invention, including handle 10, dryer section 20, circuit board 31 and motor fan assembly 40, there is air inlet channel extending along the first direction in the handle 10; an air outlet channel extending along a second direction is formed in the air cylinder part 20, the second direction is different from the first direction, and the air outlet channel is communicated with the air inlet channel; the motor-fan assembly 40 is arranged in the handle part 10 and used for providing power to make outside air flow enter the handle part 10; the circuit board 31 is arranged in the handle part 10 at the downstream of the air outlet end of the motor fan assembly 40 and extends along the length direction of the handle part 10 to divide the air inlet channel into at least two air channels; the guide member 50 is disposed in the air duct portion 20 and is located at a position where the air outlet passage communicates with the air inlet passage, and the guide member 50 has guide surfaces 51 inclined with respect to the first direction and the second direction to guide the air flows in the dual ducts to enter the air outlet passage through the guide surfaces 51, respectively. The central axis of the guide surface 51 is sandwiched between the central axis of the handle portion 10 and the central axis of the air duct portion 20. Preferably, the guide surface 51 is a concave arc surface, when the airflow blows from the dual air ducts to the guide member 50, the guide surface 51 can guide the two airflows of the dual air ducts to enter the air outlet channel through the guide surface 51 respectively, so as to form a coanda effect, and the airflow smoothly transits at the corners of the air ducts, so as to achieve the effect of improving the wind power and further have a noise reduction effect.
Referring to fig. 4, fig. 4 is a schematic structural view of a blower according to embodiment 1 of the present invention with a front cover removed; in embodiment 1 of the present invention, the circuit board 31 is disposed in the middle of the handle portion 10, the circuit board 31 divides the air inlet channel into two air channels with equal cross-sectional areas, two air streams with equal sizes in the two air channels enter the air outlet channel through the guide surface 51, and the air streams smoothly transit at the corners of the air channels, so as to achieve the effects of improving wind power and reducing noise. The high-power device is arranged on the circuit board 31, and the airflow passing through the double air channels can dissipate heat of the high-power device, so that the heat dissipation effect is good.
In the actual production process, in order to facilitate the assembly and disassembly of internal parts, the handle part 10 and the wind cylinder part 20 can be respectively formed by buckling a plurality of cover bodies or cylinder bodies; in embodiment 1 of the present invention, the handle portion 10 includes a first cover 11, a second cover 12 and a handle sleeve 18, the first cover 11 and the second cover 12 are fastened to each other, and an air inlet channel is formed therein for installing the motor and fan assembly 40 and the circuit board 31; the handle sleeve 18 is sleeved outside the first cover body 11 and the second cover body 12, and is used for increasing the connection firmness of the handle part 10 and improving the appearance; the wind barrel part 20 comprises a first barrel body 21, a second barrel body 22 and a sealing ring 23, the first barrel body 21 and the second barrel body 22 are buckled with each other, and the sealing ring 23 is arranged at the buckling position of the first barrel body 21 and the second barrel body 22 and used for enhancing the connection firmness and the sealing performance. It should be noted that this embodiment is only one embodiment of the present invention, and in other embodiments, the specific structures of the handle portion 10 and the air duct portion 20 may be set appropriately according to actual situations.
Referring to fig. 2 and 3, an air inlet end of the handle portion 10 is provided with an air inlet cover 13 and a filter screen 14, and the filter screen 14 is disposed inside the air inlet cover 13 and is used for filtering air flow entering the air inlet channel, filtering impurities in the air flow, avoiding blockage of the impurities, and prolonging the service life of the hair dryer.
In addition, in embodiment 1 of the present invention, an included angle between the central axis of the first cylinder 21 and the central axis of the handle portion 10 is 93 °, which meets the requirement of ergonomics and is convenient for holding. An inner cylinder 221 is arranged in the second cylinder 22, the guide piece 50 is sleeved on the inner cylinder 221, the guide surface 50 is an annular surface 51, and the guide surface 51 can guide the two air flows of the double air ducts to enter the air outlet channel through the guide surface 51.
In embodiment 1 of the present invention, the handle portion 10 further includes an air inlet plate 15, please refer to fig. 4, fig. 6 and fig. 7 in combination, fig. 4 is a schematic structural view of a hair dryer of embodiment 1 of the present invention after a front cover is removed; fig. 6 is an exploded view of an air inlet plate of a hair dryer according to embodiment 1 of the present invention; FIG. 7 is an enlarged view of the structure at A in FIG. 6; the air inlet plate 15 is inserted into the air inlet end of the handle portion 10, a noise reduction space is arranged between the air inlet plate 15 and the air inlet end of the motor fan assembly 40, a plurality of through holes 151 are formed in the air inlet plate 15, and the axis of each through hole 151 is parallel to the axis of the handle portion 10 or inclined relative to the axis of the handle portion 10. In embodiment 1 of the present invention, the axis of the through hole 151 is parallel to the axis of the handle portion 10, and in other embodiments, the direction of the axis of the through hole 151 may be set as appropriate according to actual conditions. Wherein the inner diameter r of each through hole 151 is 0.3-1.6mm, the distance between two adjacent through holes 151 is 0.1-0.5mm, and the distance h between the air inlet plate 15 and the air inlet end of the motor fan component 50 is 28-35 mm. When the fan blades in the motor fan assembly 40 rotate, external air sequentially passes through the air inlet cover 13, the filter screen 14 and the through holes 151 in the air inlet plate 15 to enter the air inlet channel, and by reasonably designing the inner diameter of the through holes 151, the distance between every two adjacent through holes 151 and the distance (namely, the noise reduction distance) between the air inlet plate 15 and the air inlet end of the motor fan assembly 40, the noise of the blower 100 in use can be effectively reduced, and the squeaking phenomenon is avoided; the air inlet plate 15 can be made of a common PCB or other suitable materials, and has low manufacturing cost and simple manufacturing process. Through multiple reasonable tests, the inner diameter r of each through hole 151 is preferably designed to be 0.6-1.2mm, and the noise reduction effect is good.
Since many fine dust impurities exist in the air and the diameter of the through holes 151 of the air inlet plate 15 is small, when the blower 100 is used for a period of time, the through holes are inevitably blocked, and therefore, the air inlet plate 15 needs to be replaced. Referring to fig. 6 to 8, fig. 6 is a schematic exploded view of an air inlet plate of a hair dryer according to embodiment 1 of the present invention; FIG. 7 is an enlarged view of the structure at A in FIG. 6; FIG. 8 is a schematic view of a structure of a blower according to embodiment 1 of the present invention assembled at an air inlet plate; in order to realize the function of quickly replacing the air inlet plate 15, the tail end of the first cover body 11 is provided with an insertion hole 111, the tail end of the second cover body 12 is correspondingly provided with an insertion groove 121, the inner end of the air inlet plate 15 is embedded into the insertion groove 121, and the outer end of the air inlet plate 15 is positioned in the insertion hole 111. Furthermore, a notch 152 is formed in one corner of the outer end of the air inlet plate 15, and an auxiliary hole 153 is formed beside the notch 152; the outer wall of the first cover 11 is provided with a first barrier 112 and a second barrier 113 at two sides corresponding to the insertion hole 111, the extension length of the first barrier 112 is the same as the extension length of the outer end of the air inlet plate 15 without the notch 152, the extension length of the second barrier 113 is smaller than the extension length of the first barrier 112, and the auxiliary hole 153 is exposed from the end of the second barrier 113. The gap 152 plays a fool-proof role, and is convenient for an operator to quickly identify the insertion direction when the air inlet plate 15 is replaced. When the air inlet plate 15 needs to be replaced, because the auxiliary holes 153 are exposed from the end part of the second barrier strip 113, an operator can penetrate into the auxiliary holes 153 by using a tool to pull out the air inlet plate 15 needing to be replaced and insert a new air inlet plate 15, and the replacement process is simple and rapid.
Preferably, the inner end of the air inlet plate 15 is arc-shaped, and the structure of the inner end of the air inlet plate 15 is matched with that of the insertion groove 121; the outer end of the air inlet plate 15 is arc-shaped, and the outer end profile of the air inlet plate 15 is matched with the arc-shaped profiles of the first barrier strip 112 and the second barrier strip 113.
Referring to fig. 2 or 4, the motor fan assembly 40 includes a motor fan 41 and a shock pad 42, the motor fan 41 is disposed inside the handle portion 10, the fan blades 411 of the motor fan 41 face the air inlet plate 15, the shock pad 42 is wrapped on the outer side of the motor fan 41, the outer side of the shock pad 42 is attached to the inner wall of the handle portion 10, and the inner side of the shock pad 42 is attached to the cylindrical side of the motor fan 41. The shock pad 42 is made of silica gel, so that noise generated during the operation of the motor fan 41 can be eliminated, and air inlet and air outlet squeal are relieved.
Referring to fig. 2, 4 and 6, a first silencing cotton mounting area 114 is disposed on the first cover 11 corresponding to the space between the motor fan assembly 40 and the air inlet plate 15, a second silencing cotton mounting area 122 is disposed on the second cover 12 corresponding to the space between the motor fan assembly 40 and the air inlet plate 15, and both the first silencing cotton mounting area 114 and the second silencing cotton mounting area 122 are used for mounting silencing cotton, so as to further reduce noise.
The heating assembly 60 further comprises a fuse type fuse 64, the fuse type fuse 64 is arranged on the air outlet side of the outer ring 622 and the inner ring 621, and the fuse type fuse 64 is connected with the heating wire 624 in series, so that short circuit protection and overcurrent protection are achieved, and the use safety of the hair dryer is guaranteed.
In the hair dryer in the prior art, the power cord is generally fixed to the tail end of the handle of the hair dryer through additional parts such as clamping jaws and clamping seats, so that the production cost and the manufacturing process are increased, and the parts also need additional storage space and management. Therefore, the invention improves the handle structure of the hair drier and utilizes the structure to clamp and fix the power line. Referring to fig. 9, fig. 9 is a schematic view of a wire clamping structure of a hair dryer according to embodiment 1 of the present invention; the tail end of the handle part 10 is provided with at least a first card wire hole 16 and a second card wire hole 17, the first card wire hole 16 and the second card wire hole 17 are overlapped in the length direction of the handle part 10, the axis of the first card wire hole 16 is not overlapped with the axis of the second card wire hole 17, and a step-shaped card wire structure is formed at the transition position of the first card wire hole 16 and the second card wire hole 17. Therefore, the power cord can be clamped and fixed at the tail end of the handle part 10 by utilizing the self structure of the handle part 10, the connection firmness of the power cord is improved, additional parts are avoided, and the production cost and the manufacturing process are saved. The corners of the step-shaped wire clamping structure are in smooth transition, so that the power line can be prevented from being scratched.
In embodiment 1 of the present invention, the inner diameter of the first card wire hole 16 is equal to the inner diameter of the second card wire hole 17, the central axes of the first card wire hole 16 and the second card wire hole 17 are parallel to each other and are parallel to the central axis of the handle portion 10, the second card wire hole 17 is located inside the first card wire hole 16, a wire dividing groove 191 is provided inside the handle portion 10 corresponding to the inner side of the second card wire hole 17, wire routing grooves 192 are provided on both sides of the inner wall of the handle portion 10, and the wire routing grooves 192 on both sides are respectively communicated with the wire dividing groove 191. The power cord is clamped at a cord clamping structure formed by the first cord clamping hole 16 and the second cord clamping hole 17, the power cord is branched at the branching groove 191, the separated wires are respectively routed through the wiring grooves 192 at two sides, and the heating component 60 and the motor fan component 40 are electrically connected with the circuit board 31 through the wires, so that the electric control of the hair dryer 100 is realized. The design of the wire dividing groove 191 and the wire distributing groove 192 facilitates rapid wire distribution, and the internal cleanliness of the hair dryer can be improved.
Referring to fig. 2, in embodiment 1 of the invention, the blower 100 further includes a circuit board 32, the circuit board 32 is disposed in the second cylinder 22, the circuit board 32 is annular and is sleeved on the inner tube 221, and the circuit board 32 is electrically connected to the circuit board 31. In actual assembly, components with high power and high heat productivity are mounted on the circuit board 31, and the high-power components are radiated by using airflow of the double air ducts; some components with low heat productivity can be mounted on the circuit board 32, and natural heat dissipation can be performed by using the ambient temperature. However, the present invention is not limited to this, and in other embodiments, only one circuit board that divides the air intake channel into two air ducts may be provided, and all necessary electronic components are mounted on the circuit board.
Referring to fig. 2, the blower 100 further includes an anion assembly 70, the anion assembly 70 includes an anion generator 71 and a discharge end 72, the anion generator 71 is disposed on the circuit board 32, and the discharge end 72 extends to the air outlet 614. The negative ions emitted from the discharge end 72 of the negative ion generator 71 are blown out from the air outlet 614 along with the heated air flow, so that the static electricity generated by the hair can be neutralized, and the effect of smoothing the hair is achieved. The discharge end 72 is preferably a carbon brush, which can improve the negative ion emission effect.
Referring to fig. 2, the blower 100 further includes a display assembly 80, the display assembly 80 includes a light emitting element 81 and a light guiding pillar 82, the light emitting element 81 is disposed on the circuit board 32, the light guiding pillar 82 is disposed between the light emitting element 81 and the second cylinder 22, and the thickness of the second cylinder 22 corresponding to the light guiding pillar 82 is reduced. In use, the light guide rod 82 can transmit the light generated by the light emitting element 81 to the corresponding position of the second cylinder 82, so that the user can know the working state of the hair dryer 100 conveniently. For example, the light emitting element 81 may be an LED chip, and the light guide 82 may be configured to match the LED chip and to display the operating temperature of the blower 100. The light emitting elements 81 may also be diodes of different colors, such as red and blue, for displaying the states of hot air blowing and cold air blowing, respectively. The thickness of the second barrel 22 of leaded light post 82 correspondence department carries out the attenuate processing to light can see through as the standard, can realize the data display function ingeniously, can avoid again offering the through-hole that is used for installing the display screen on the casing, saves production technology, reduces the processing cost, can also improve structural strength, improves waterproof, dustproof effect.
Referring to fig. 2, the blower 100 further includes an adjusting assembly 90, the adjusting assembly 90 includes a button 91 and a gasket 92, the button 91 is connected to the circuit board 32 and exposed from the second cylinder 22, and a user can adjust an operating parameter of the blower 100, such as a temperature, a wind speed, and the like, by using the button 91; the gasket 92 is disposed at a contact portion of the key 91 and the second cylinder 22 for enhancing sealing performance.
Referring to figures 2, 10 and 11 in combination, figure 10 is an electrical schematic of a hair dryer according to the present invention; figure 11 is an electrical schematic of a heater in a hair dryer of the present invention; in fig. 10, high-power devices such as an MCU controller and an inverter are disposed on a circuit board 31, and low-power devices such as an inductor capacitor, a rectifier bridge, and a switching power supply are disposed on a circuit board 32; the motor fan 41 is electrically connected with the circuit board 31, and the motor fan 41 works to enable outside air to enter the air inlet channel; the heating wire 624 in the heater 62 is electrically connected to the circuit board 32, and is used for heating the airflow in the air outlet channel; the temperature sensor 63 detects the temperature of the air inlet and feeds the temperature back to the MCU controller; the negative ions generated by the negative ion generator 71 are emitted to the air outlet through the discharge end 72, and the effect of smoothing hair is achieved. In fig. 11, the temperature control switch corresponds to a button 91, which can be used to adjust the heating temperature; the thermal fuse link corresponds to the fuse type fuse 64, the heating element corresponds to the heating wire 624, and the fuse type fuse 64 is connected in series with the heating wire 624 for circuit protection.
Referring to fig. 12, fig. 12 is a schematic structural view of a blower according to embodiment 2 of the present invention with a front cover removed; in embodiment 2 of the present invention, the circuit board 31 is disposed in the handle portion in an offset manner, the circuit board 31 divides the air inlet channel into two air channels with unequal cross-sectional areas, two air flows with unequal flow rates in the two air channels enter the air outlet channel through the guide surface 51, and the air flows smoothly transition at the corners of the air channels, so as to achieve the effects of improving wind power and reducing noise. Meanwhile, because the two air flows in the double air ducts are unequal, the pressures on the two sides of the air flow blowing to the guide surface 61 are inconsistent, and therefore, a rotating air flow can be formed in the air outlet channel, and the wind power is further improved.
Referring to fig. 13, fig. 13 is a simplified schematic diagram of a wire clamping structure of a hair dryer according to embodiment 3 of the present invention; in embodiment 3 of the present invention, the tail end of the handle portion 10 is provided with a first card wire hole 16 and a second card wire hole 17, the first card wire hole 16 and the second card wire hole 17 are overlapped in the length direction of the handle portion 10, the central axis of the first card wire hole 16 and the central axis of the second card wire hole 17 are inclined in the same direction, a stepped card wire structure is formed at the transition portion of the first card wire hole 16 and the second card wire hole 17, and corners of the stepped card wire structure are transited smoothly, so as to avoid scratching the power line.
Referring to fig. 14, fig. 14 is a simplified schematic diagram of a wire clamping structure of a hair dryer according to embodiment 4 of the present invention; in embodiment 4 of the present invention, the tail end of the handle portion 10 is provided with a first card wire hole 16 and a second card wire hole 17, the first card wire hole 16 and the second card wire hole 17 are overlapped in the length direction of the handle portion 10, the central axis of the first card wire hole 16 and the central axis of the second card wire hole 17 are inclined in opposite directions, a stepped card wire structure is formed at the transition portion between the first card wire hole 16 and the second card wire hole 17, and corners of the stepped card wire structure are transited to avoid scratching the power line smoothly.
In other embodiments, the wire clamping structure can be reasonably designed according to actual conditions, as long as the clamping and fixing function of the power line can be realized by utilizing the self structure of the handle part.
In summary, the present invention provides an air duct system of a hair dryer, in which a circuit board divides an air inlet channel into two air ducts, and when an airflow blows from the two air ducts to a guide member, the guide member has a guide surface inclined with respect to the air inlet channel and the air outlet channel, and can guide two airflows of the two air ducts to enter the air outlet channel through the guide surface, so as to form a coanda effect, and the airflows smoothly transition at the corners of the air ducts, so as to achieve the effect of improving wind power and have a noise reduction effect; in addition, if the air inlet channel is divided into uneven double air channels, the pressure on two sides of the air flow blown to the guide piece is inconsistent, and rotary air flow can be formed in the air outlet channel, so that the wind power is further improved; the high-power device is arranged on the circuit board, and the airflow passing through the double air ducts can dissipate heat of the power device, so that the heat dissipation effect is good; the tail end of the handle part is provided with the air inlet plate, the air inlet plate is provided with a plurality of through holes, and the noise of the hair drier in use can be effectively reduced by reasonably designing the inner diameter of the through holes, the distance between two adjacent through holes and the distance between the air inlet plate and the air inlet end of the motor fan; the air inlet plate can be made of a common PCB or other suitable materials, so that the manufacturing cost is low and the manufacturing process is simple; the air inlet plate is of a plug-in type structure, a first cover body of the handle part is provided with plug-in holes, a second cover body is provided with plug-in grooves, and the air inlet plate can be accurately plugged into the tail end of the handle part; the auxiliary holes on the air inlet plate are exposed, so that the air inlet plate is convenient to replace; the first cover body is provided with a first silencing cotton mounting area, and the second cover body is provided with a second silencing cotton mounting area which are respectively used for mounting silencing cotton, so that noise transmission is reduced; the damping pad is wrapped outside the motor fan to further reduce noise; handle portion end sets up first card line hole and second card line hole, and the axis in first card line hole does not coincide with the axis in second card line hole, and the transition department in first card line hole and second card line hole forms step form card line structure, consequently can utilize handle portion's self structure to fix the tail end at handle portion with the power cord chucking, improves power cord firm in connection degree, avoids using extra part simultaneously, saves manufacturing cost and manufacturing procedure.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (24)
1. An air duct system of a blower, characterized in that: the method comprises the following steps:
a handle portion in which an air intake passage extending in a first direction is formed;
the air cylinder part is internally provided with an air outlet channel extending along a second direction, the second direction is different from the first direction, and the air outlet channel is communicated with the air inlet channel;
a motor-fan assembly disposed within the handle portion;
the circuit board is arranged in the handle part and is arranged at the downstream of the air outlet end of the motor fan assembly and extends along the length direction of the handle part so as to divide the air inlet channel into at least two air channels;
the air duct part is internally provided with a guide piece positioned at the communication position of the air outlet channel and the air inlet channel, and the guide piece is provided with a guide surface inclined relative to the first direction and the second direction so as to guide the air flow in the double air ducts to respectively enter the air outlet channel through the guide surface.
2. The blower duct system of claim 1, wherein: the circuit board divides the air inlet channel into two air channels with equal cross-sectional areas.
3. The blower duct system of claim 1, wherein: the circuit board divides the air inlet channel into double air channels with unequal cross-sectional areas.
4. The blower duct system of claim 1, wherein: the center axis of the guide surface is located between the center axis of the handle portion and the center axis of the wind cylinder portion.
5. The blower duct system of claim 1, wherein: the air duct part comprises a first barrel and a second barrel, the first barrel is buckled with the second barrel, and the air outlet channel is located in the first barrel.
6. The blower duct system of claim 5, wherein: an inner barrel is arranged in the second barrel, the guide piece is sleeved on the inner barrel, and the guide surface is an annular surface.
7. The blower duct system of claim 1, wherein: the handle portion still includes the air inlet board, the air inlet board cartridge in the air inlet end of handle portion, the air inlet board with it falls the interval of making an uproar to be equipped with one section between the air inlet end of motor fan subassembly, set up a plurality of through-holes on the air inlet board, the axis of every through-hole is on a parallel with the axis of handle portion or for the axis slope of handle portion.
8. The blower duct system of claim 7, wherein: the inner diameter of each through hole is 0.3-1.6mm, the distance between every two adjacent through holes is 0.1-0.5mm, and the distance between the air inlet plate and the air inlet end of the motor fan assembly is 28-35 mm.
9. The blower duct system of claim 8, wherein: the inner diameter of each through hole is 0.6-1.2 mm.
10. The blower duct system of claim 7, wherein: the handle portion comprises a first cover body and a second cover body, and the first cover body and the second cover body are buckled with each other.
11. The blower duct system of claim 10, wherein: the tail end of the first cover body is provided with an insertion hole, the tail end of the second cover body is correspondingly provided with an insertion groove, the inner end of the air inlet plate is embedded into the insertion groove, and the outer end of the air inlet plate is located in the insertion hole.
12. The blower ducting system of claim 11, wherein: a notch is formed in one corner of the outer end of the air inlet plate, and an auxiliary hole is formed beside the notch; the outer wall of the first cover body corresponds to two sides of the insertion hole are provided with a first blocking strip and a second blocking strip, the extension length of the first blocking strip is equal to the extension length of the outer end of the air inlet plate, the extension length of the second blocking strip is smaller than the extension length of the first blocking strip, and the auxiliary hole is exposed out of the end portion of the second blocking strip.
13. The blower duct system of claim 10, wherein: the motor fan assembly with correspond between the air inlet plate be equipped with the cotton installing zone of first amortization on the first lid, motor fan assembly with correspond between the air inlet plate be equipped with the cotton installing zone of second amortization on the second lid, the cotton installing zone of first amortization the cotton installing zone of second amortization all is used for installing the amortization cotton.
14. The blower duct system of claim 7, wherein: the motor fan subassembly includes motor fan and shock pad, motor fan locates the inside of handle portion, motor fan's fan blade orientation the air inlet plate, the shock pad wrap up in motor fan's the outside, the lateral surface of shock pad with the inner wall laminating of handle portion, the medial surface of shock pad with motor fan's cylinder side laminating.
15. The blower duct system of claim 6, wherein: still include heating element, heating element includes thermal-insulated support, heater and temperature sensor, thermal-insulated support is located the inside of first barrel, the air-out side of thermal-insulated support is equipped with annular air outlet, the heater is located on the thermal-insulated support, temperature sensor locates the heater orientation one side of air outlet.
16. The blower ducting system of claim 15, wherein: the heat insulation support comprises a flow guide portion, an inner tube and a connecting piece, the flow guide portion is in a shape of a circular truncated cone side face, a small-diameter end of the flow guide portion faces an air outlet end of the first barrel, the connecting piece is connected between the small-diameter end of the flow guide portion and an air outlet side end portion of the inner tube in the radial direction of the inner tube, and an air inlet side end portion of the inner tube is in butt joint with the inner tube.
17. The blower duct system of claim 16, wherein: the heater cover is located on the inner tube, the heater includes inner circle, outer lane, connecting plate and heater strip, the outer lane with the inner circle is coaxial to be set up, the connecting plate is followed the radial connection of inner circle in the inner circle with between the outer lane, the heater strip is crooked form edge the circumference of inner circle twines in on the connecting plate.
18. The blower duct system of claim 1, wherein: the end of handle portion is provided with at least first card line hole and second card line hole, first card line hole with the second card line hole is in superpose on the length direction of handle portion just the axis in first card line hole with the axis in second card line hole does not coincide, first card line hole with the transition department in second card line hole forms step-like card line structure.
19. The blower duct system of claim 18, wherein: the second card line hole is located the inboard in first card line hole, the inside of handle portion corresponds to the inboard in second card line hole still is equipped with the branch line groove, the inner wall both sides of handle portion are equipped with the trough, both sides the trough respectively with branch line groove intercommunication.
20. The blower ducting system of claim 15, wherein: the air duct system of the hair dryer further comprises a circuit board, the circuit board is sleeved on the inner tube, and the circuit board is electrically connected with the circuit board.
21. The blower duct system of claim 20, wherein: the air duct system of the hair dryer further comprises an anion assembly, the anion assembly comprises an anion generator and a discharge end, the anion generator is arranged on the circuit board, and the discharge end extends to the air outlet.
22. The blower duct system of claim 20, wherein: the air duct system of the hair dryer further comprises a display assembly, the display assembly comprises a light-emitting element and a light guide column, the light-emitting element is arranged on the circuit board, the light guide column is arranged between the light-emitting element and the second barrel, and the light guide column corresponds to the second barrel in a thinned mode.
23. The blower duct system of claim 20, wherein: the air duct system of the hair dryer further comprises an adjusting component, the adjusting component comprises a key and a sealing gasket, the key is connected with the circuit board and exposed out of the second barrel, and the sealing gasket is arranged at the contact position of the key and the second barrel.
24. The blower duct system of claim 1, wherein: the handle part further comprises a handle sleeve, and the handle sleeve is sleeved outside the first cover body and the second cover body.
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| CN202011570083X | 2020-12-26 | ||
| CN202011570083 | 2020-12-26 |
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Cited By (1)
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| CN114401648A (en) * | 2021-06-18 | 2022-04-26 | 深圳汝原科技有限公司 | Hair drier |
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| CN112869327B (en) | 2023-04-25 |
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