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Electric hairbrush
·EP2335515A1·SEB·2011
The fan, its motor and the heating element sit inside the handle, with the air inlet at one end of the handle and the outlet at the other.
Set aside
Rotary type electric wind comb
·CN202774786U·Ningbo Shunshuai Electrical Appliances·2013
A motor in the handle drives a fan, and air enters through an inlet cover at the end of the handle.
Filed as D1
Hair dryer
·EP0631738A1·Ermila Friseurgeräte·1995
A housing attachment over the fan's intake forms a chamber with a second intake opening, which brings the fan noise down.
Set aside
Hair-dryer
·EP0518035A2·Braun·1992
A filter covers the air inlet, and a sensor in the housing reports the temperature so the dryer can signal when the filter needs cleaning.
Set aside
Effectively-muted electric hair dryer
·CN201328477Y·Quan Hongyun·2009
The blower sits at the bottom end of the handle, so air enters there and runs through the handle into a longer air duct.
Filed as D2
Cylindrical or conical electric hair dryer - has motor driven axial flow fan discharging air coaxially through strip element winding
·DE2618819A1·Dov Z. Glucksman·1977
An axial fan at the rear of the housing draws air in through openings in the end cover, which also carries the cable entry.
Filed as D3
Heated air blower
·EP2567632A1·Panasonic·2013
Separate hot and cold air passages run from one air inlet, and a sensor reads the room temperature to set how much air is heated.
Set aside
Noise reducing structure of hairdryer
·CN202386031U·Yang Ruihong·2012
A ring of sound-absorbing foam lines the air duct between the rear air inlet and the fan.
Set aside
Hair dryer
·EP0487933A2·Braun·1992
A perforated rotor in the air channel is spun by the fan's air flow, with a fixed baffle beside it shaping the air leaving the outlet.
Set aside
Hair dryer
·JPS6429208A·Matsushita Electric Works·1989
A two-layer noise damping sheet lines the air passage in the housing, so noise drops without losing air volume.
Set aside
- 1.
A hair care appliance (10, 500) comprising: a body (30, 530); a handle (20, 520) having a first end (22, 522) in fluid communication with the body (30, 530) and a second end (24) comprising a primary fluid inlet (40, 540) into the appliance; wherein the primary fluid inlet (40, 540) comprises a first aperture (42, 544) extending at least partially around the handle (20, 520) and a second aperture (44, 546) extending through the second end (24) of the handle (20, 520); wherein the handle (20, 520) comprises a wall (220, 560) and the primary fluid flow path extends from the primary fluid inlet (40, 540) within the wall (220, 560) to a primary fluid outlet (440); the handle (20, 520) further comprises a fan unit (70) for drawing fluid in through the primary fluid inlet (40, 540); the handle (20, 520) comprises an outer wall (200, 526) wherein said outer wall (200, 526) extends around the wall (220, 560) and at least partially
along the wall (220, 560)along the wall (220, 560); characterised in that the wall (220, 560) comprises an access aperture for allowing an access to the inside of the wall (220, 560) and a hatch for closing the access aperture. - 2.
An appliance according to claim 1, wherein the handle comprises an end wall (210, 510) at the second end and the second aperture extends through the end wall.
- 3.
An appliance according to claim 1 or claim 2, wherein the first aperture (42, 544) is adjacent the second end of the handle.
- 4.
An appliance according to any preceding claim, wherein the first aperture (42, 544) comprises a plurality of apertures extending at least partially around the handle.
- 5.
An appliance according to any preceding claim, wherein the first aperture (42, 544) comprises a plurality of apertures extending at least partially along the handle.
- 6.
An appliance according to any preceding claim, wherein the plurality of apertures extend radially around the handle and along the outer wall (200, 526) of the handle from the handle end.
- 7.
An appliance according to any preceding claim, wherein a primary fluid flow path (400, 550) is provided from the primary fluid inlet (40, 540) through the handle and into the body to a primary fluid outlet (440, 534).
- 8.
An appliance according to any preceding claim, wherein the wall (220, 560) of the handle is connected to the body at the first end (22, 522).
- 75PCB
- 75afirst board of the PCB
- 75bsecond board of the PCB
- 77larger PCB components
- 80heater
- 300fluid flow path through the body
- 310duct
- 350side wall
- 700flow plate
- 710curved section
- 740slots in the flow plate
The present invention relates to a hand held appliance, and in particular to a hair care appliance such as a hairdryer (10) comprising a body (30) and a handle (20), in which air is drawn into the appliance through a primary fluid inlet (40) at the second end (24) of the handle (20), as shown in Fig. 4a.
In a conventional hairdryer a motor and fan draw air into the body through an inlet at its back end, usually behind a filter. When the appliance is put down on a soft surface such as bedding, that inlet can be covered and the motor can overheat.
CN 202774786 U describes a rotary electric air comb whose handle houses a motor driving a fan, with an air inlet cover at the end of the handle. In CN 201328477 Y the blower of a hairdryer sits at the bottom end of the handle, so that air enters there and passes through the handle into a longer air duct. DE 2618819 A1 describes a cylindrical hairdryer in which an axial fan at the rear of the housing draws air in through openings in an end cover that also carries the cable entry.
Each of these appliances draws air in at the end of the handle or housing, with the fan behind that inlet. The handle then houses the fan unit (70) and its wiring, and in a conventional clam shell construction its two halves are screwed together, so that a user can remove the screws and reach the heater and the fan unit.
There is therefore a need for a handle whose inner wall (220) can be formed in one piece with the body (30), while the components inside it remain accessible during assembly through an opening that can be closed.
Matters, applications, versions
A matter holds its applications, EP, US, PCT, divisionals, and each application keeps its own version history. Saving freezes the application as it stands, so a filed version stays exactly as filed and follow-on filings fork from any frozen version.
References are structure, not text
Claim 1, FIG. 2, or (101) becomes a linked chip, pinned on the drawings. Renumber anything and every mention follows. A sign never mentioned, or one number on two parts, is flagged before an examiner finds it.
- 75PCB
- 310Duct
- 700Flow plate
- 710Curved section
- 1.
The appliance of claim 1, wherein a flow plate (700) is arranged within the body (30) to direct the primary fluid flow path (400) around the PCB (75).
A flow plate (700) is provided to direct the flow within the primary fluid flow path (400) over and around the PCB (75), minimising the pressure losses due to the location of the PCB and the change of direction as the flow enters the body (30).
The flow plate (700) is annular with a curved section (710) that provides a smooth change in orientation for the primary fluid flow path (400). By providing a curved surface the flow is directed around the corner, which reduces noise.
Slots (740) in the flow plate (700) receive the larger PCB components (77), so that the double layer of the PCB (75a, 75b) sits clear of the region of relatively high velocity.
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