CN1370486A - Hair-protecting warm air plant - Google Patents

Abstract

The hair protecting warm air plant is similar a high drier. It has an air flow passage for air to flow through, a motor driven blowing vane wheel in the passage, and an air inlet structure, which is on the air inlet side of the air flow passage and comprising an axial air inlet and one or several radial-to-axial inlets. At least one of the radial inlets envelops the extension of axially sucked air flow.

Description

Hair-protecting warm air plant

Technical field

The utility model relates to a kind of hair-protecting warm air plant, for example is a kind of hair hair dryer, have in the gas channel that is located at device running space-time air-flow warp and by electric motor driven blowing impeller.In the air inlet side end zone of gas channel, gas channel has need and the axial admission mouth is arranged and one or more inlet structures from the air inlet that radially goes to axial primary air direction are arranged.

Background technology

This electric hair-protecting warm air plant such as hair hair dryer, curler or similar device in, the passage of this device running space-time air-flow warp is configured the tubular portion that remains in this device case usually.In this barrel portion section, be provided with the motor base (frame) that receive to drive the motor that the blowing impeller uses.The diameter of blowing impeller is slightly less than the internal diameter of gas channel, and when the hair-dryer wheel rotation, air is from the air inlet side draught to gas channel and through its input like this.Impact on the heater at the outlet side of gas channel input steam flow, like this, can blow out this thermal current from the front end of hair hair dryer to the air-flow heating that sucks.The suction side of this device is equipped with a kind of protection canopy, in case of necessity, also can cover a pneumatic filter.

As being that the generation of its noise of hair-protecting warm air plant of constituting of example can not be ignored with the hair hair dryer, especially when this device turns round with the highest power.When this hair hair dryer turned round, its noise level depended on the running noise of motor and the pneumatic noise that is caused by blowing impeller inhaled air, and wherein high motor speed can cause corresponding high noise levels.Based on this reason, people make every effort to adopt alap motor speed.Yet in order to obtain enough air demands, each blade of blowing impeller will make big inclination angle.But will pay a price when rotor blade is so installed, promptly definite part is arranged is not the side but release in the air inlet side of giving vent to anger from gas channel to inhaled air.Though this can be avoided by the rotor blade that increases horizontal, in order to obtain identical flow, motor must turn round with high rotational speed.Yet this will cause higher moving commentaries on classics noise level again.In addition, the air-flow component that is released again by the air inlet side will cause eddy current, can play adverse influence to the running noise level equally.

For the noise that the hair hair dryer is generated reduces, in JP10257917A, be provided with one by the additional air inlet that radially extends to the primary air direction in the air inlet parts that is positioned at gas channel.To axial primary air direction radial air inlet mouth be by one section gas conduit be folded to the primary air direction and towards the blowing impeller outer edge region.Additional radial air inlet mouth extend in a circumferential direction and account for garden week 1/3rd to very this.Use the gentle circulation of air-flow import-restriction and generate reduction to the noise that can make the hair hair dryer.Yet people still generate at the noise of being devoted to further to go as much as possible to reduce hair-protecting warm air plant such as hair hair dryer.

Summary of the invention

Based on discussion to prior art, task of the present utility model has been proposed thus: the beginning described hair-protecting warm air plant of part such as a kind of hair hair dryer are constituted in this wise, the necessary free of losses of its air demand, its work noise level should reduce than the situation in the known prior art.

This task will solve in this wise according to the utility model, and promptly at least one radial air inlet mouth all surrounds the air-flow ground extension that is sucked by the axial admission mouth basically.

Have a radial air inlet mouth at least or designed an inlet structure in the hair-protecting warm air plant that the utility model proposes, it plays effect very widely basically.Use this measure a kind of additional air inlet is provided, it is different from known prior art, in this air inlet blowing impeller periphery quite on a large scale in by the inflow air-flow.Using this structure uses the hair-protecting warm air plant generation of noise in the running than the unexpected reduction further that had that can reach with above-mentioned prior art.

In a configuration that meets the requirements, an end that is in the air inlet side of gas channel has a guide ring of expanding at least gradually towards the air inlet side direction.Guide ring itself cross a main air intake, in the running, enter gas channel by blowing impeller inhaled air by main air intake.Guide ring relative wind passage is to arrange like this, forms the ring-type air inlet of a broad between guide ring and gas channel.The notion of " an additional ring-type air inlet " in the scope of this embodiment that this additional air inlet is formed by the inner surface and the guide ring outer surface of gas channel tube wall can be understood as the structure that an air inlet or each air inlet are formed.When the device running, the additional air flow that it will cause surrounding the primary air that passes guide ring enters into gas channel.

Conform with the destination, the longitudinal axis of guide ring and gas channel is arranged with one heart, wherein is designed in one embodiment: this gas channel is made of a tubular part, and its internal fixation has one in order to drive the required motor of blowing impeller.

In a favourable configuration, be constituted as with its cylindrical sector and extend in the gas channel, so that the additional air flow that the air inlet by ring-type sucks can produce certain deflection, and this causes that in vertical section of gas channel second air-flow enters into this gas channel.

Guide ring is curved the funnel shaped that opens mouthful to the air inlet side, and like this from being particularly advantageous for reducing running noise, and this section has straight part equally, therefore formed the profile of a truncated cone.This section can be connected on the cylindrical sector again, and the latter inserts in the gas channel as described above.Minimum in order running noise to be reduced to, bending section also will connect another section at air inlet side place, this section have on the contrary to curvature, wherein this curvature reaches such degree, has promptly avoided reducing again of the inner air inlet clear span of guide ring.The S-shaped bending in the longitudinal section of this guide ring is satiable.

Guide ring for example can be fixed in the support on the parts that constitute gas channel by insertion.

Description of drawings

Fig. 1 represents as a part sectioned view in the territory, air inlet lateral areas, rear portion of the hair hair dryer 1 of hair-protecting warm air plant.

The related symbol table

1 hair hair dryer

2 housings

3 shells

4 handgrips

5 parts

6 gas channels

7 dividing plates

8 motor base (frame)s

9 motor

10 power transmission shafts

11 blowing impellers

12 electric calorifie installations

13 guide rings

14 cylinder sections

15 funnel-forms are opened section

16 sections

17 air inlets

18 air inlets

19 guard booms

H supports

The  opening

The specific embodiment

Come the utility model is described by an embodiment hereinafter with reference to accompanying drawing 1.Fig. 1 represents as a part sectioned view in the territory, air inlet lateral areas, rear portion of the hair hair dryer 1 of hair-protecting warm air plant.Hair hair dryer 1 comprises a double Shell 2, can find out shell 3 by this housing among the figure, integrally forms a handgrip 4 on shell 3.Being contained in the double Shell 2 of hair hair dryer 1 is the annular element 5 of a tubulose, and the space that is surrounded by it has formed gas channel 6.The parts 5 that form the inner surface of gas channel 6 have a columniform outer peripheral face.In parts 5, be configured for receiving the motor base (frame) 8 of a motor 9 in the central by dividing plate 7.Blowing impeller 11 is housed on the power transmission shaft 10 of motor 9.Here the direction of direction towards motor 9 of supplying gas of impeller 11 is designed to dry.Therefore, the back that hair dries up machine 1 has formed the air inlet side, and the gas shock of sending into from the blowing impeller makes the air-flow heating to the electric calorifie installation 12 that is not shown specifically.For simplicity, among the figure electric wire of hair hair dryer 1 and other parts are not given and illustrating.

Air inlet side at parts 5 is inserted a ring-type guide ring 13, and it is fixed on the parts 5, guide ring 13 arranges with one heart that with the gas channel 6 of parts 5 guide ring 13 comprises an inner cylinder section 14, and it is inserted into the air inlet place of the suction side of gas channel 6 guide ring 13 usefulness.On cylinder section 14, be connected with a funnelform open section 15 of suction side that faces toward, enlarged the clear span of guide ring 13 by it, the funnelform section 15 that opens is connecting another section 16 in suction side, and this section and funnel-form are opened section 15 bending direction opposite curvature ground and constituted.And at cylindrical cavity face of its least significant end formation.Therefore, the longitudinal profile of guide ring 13 has curved shape, as shown in fig. 1.

The external diameter of the cylinder section 14 of guide ring is less than the internal diameter of parts 5 in the air inlet side end zone of gas channel 6.Therefore, between the inner surface of the outer surface of the cylinder section 14 of guide ring 13 and parts 5, formed the additional air inlet 17 of a ring-type.Air inlet 17 is equivalent to an annular slot, only blocked supporting the H place, and guide ring 13 usefulness this be supported and fixed on the parts 5.

When 1 running of hair hair dryer, make air inlet 18 that air surrounded via guide ring 13 and be blown into by the blowing impeller 11 of rotation by ring-type air inlet 17, as what roughly represent with the arrow of representing air-flow in the drawings, housing 2 air inlet sides at hair hair dryer 1 are equipped with a guard boom 19, in order to reduce gas-flow resistance, it has big as far as possible opening ; The side of giving vent to anger of hair hair dryer also has a guard boom, and it forms as far as possible little gas-flow resistance similarly, and its formation and method are no longer described in detail.

Clearly show from description of the present utility model: the charge air flow of an additional circular outer periphery of employing can reduce the running noise level of hair hair dryer quite significantly.

Claims (10)

1, hair-protecting warm air plant, as a kind of hair hair dryer, have one and be located at device (1) when operation, reaching in the gas channel that air is flowed through (6) by electric motor driven blowing impeller (11), in the air inlet side end zone of air duct (6), gas channel (6) has one and has axial admission mouth (18) and one or more inlet structure by the air inlet that radially goes to axial primary air direction (17), it is characterized in that: at least one radial air inlet mouth (17) all surrounds the air-flow ground that is sucked by the axial admission mouth basically and extends.

2, according to the hair-protecting warm air plant of claim 1, it is characterized by: inlet structure gradually forms the air inlet (17) that a primary air direction ring-type, relative is radially arranged by the open guide ring of funnel-form (13) of expansion towards the air inlet side at least by one, and this air inlet is made of the outer surface of gas channel inner surface and guide ring (13).

3, according to the hair-protecting warm air plant of claim 2, it is characterized by: the longitudinal axis of guide ring (13) relative wind passage (6) is arranged with one heart.

4, according to any described hair-protecting warm air plant in the claim 1 to 3, it is characterized by: gas channel (6) has a cylindrical inner cavity surface and guide ring (13) comprises a cylinder section (14) that reaches in the gas channel (6), this section with have a common boundary to the open bucket-shapedly section of air inlet side leakage (15).

5, according to any described hair-protecting warm air plant in the claim 1 to 4, it is characterized by: be made into outwardly-bent to the open bucket-shapedly section of air inlet side leakage (15).

6, according to the hair-protecting warm air plant of claim 4, it is characterized by: the funnel-form outside open section in ground (15) of guide ring (13) connects the section (16) with counter curvature near the air inlet side.

7, according to any described hair-protecting warm air plant in the claim 1 to 6, it is characterized by: gas channel (6) is made of the tubular part that has motor base (frame) (8) (5) in the housing (2) that is located at hair hair dryer (1).

8, according to the hair-protecting warm air plant of claim 7, it is characterized by: the support (H) that guide ring (13) is installed on the parts (5) is fixed.

9, according to any described hair-protecting warm air plant in the claim 1 to 8, it is characterized by: gas channel (6) and guide ring (13) are covered with a guard boom (19) with big as far as possible opening () in the air inlet side.

10, according to any described hair-protecting warm air plant in the claim 1 to 9, it is characterized by: hair-protecting warm air plant is a kind of hair hair dryer (1).

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