CN219813419U - Inside wind-guiding structure of hair-dryer and hair-dryer - Google Patents

Abstract

The utility model discloses an internal air guide structure of a blower and the blower, which comprises a shell, a rear cover and a blowing nozzle, wherein the rear cover and the blowing nozzle are respectively arranged at two ends of the shell; a wind guide cover is arranged between the rear cover and the blowing nozzle; the air guide cover comprises an annular bottom wall, a first guide side wall and a second guide side wall, wherein the first guide side wall extends vertically from the inner side edge of the annular bottom wall, and the second guide side wall extends vertically from the outer side edge of the annular bottom wall; the annular bottom wall, the first diversion side wall and the second diversion side wall are jointly surrounded to form an annular diversion trench; the blowing nozzle is fixed on one side of the second diversion side wall far away from the annular bottom wall; the preset part of the second diversion side wall is also provided with an air inlet communicated with the diversion trench. According to the utility model, the annular bottom wall, the first diversion side wall and the second diversion side wall are arranged together to form the annular diversion trench, when the blower runs, air flow enters the diversion trench through the air inlet, and the diversion trench is an annular area, so that the air flow contact surface is gentle, noise is not easy to generate, and the use experience is improved.

Description

Inside wind-guiding structure of hair-dryer and hair-dryer

[ field of technology ]

The utility model relates to the technical field of blowers, in particular to an internal air guide structure of a blower and the blower.

[ background Art ]

At present, the circuit board devices and structures inside the existing blower are complex, the wind enters the blower and is guided to be disordered, and vortex is easy to generate inside, so that the normal air outlet of the blower is affected. Therefore, how to design the air guiding structure inside the blower becomes the key of the blower.

In the prior art, patent publication number CN217082923U discloses an internal air guiding structure of a blower, which comprises a main board bracket, wherein the main board bracket comprises a fixing frame and a mounting frame positioned in the fixing frame, the fixing frame and the mounting frame form a main air channel, an air guiding opening communicated with the main air channel is arranged on the outer side wall of the fixing frame, the mounting frame is provided with two spiral blade surfaces and an air guiding cambered surface corresponding to the air guiding opening, and the two spiral blade surfaces and the fixing frame form two first auxiliary air channels, two second auxiliary air channels and a main air opening communicated with the main air channel; the two first auxiliary air channels gather wind and enter the main air channel through the main air inlet, the other air stream gathers wind through the two second auxiliary air channels and then enters the main air channel, the two air streams are converged in the main air channel and then enter the heater, the air outlet is carried out through the air outlet of the blower, and the two air streams are finally converged at the air outlet of the blower, so that the wind cannot be guided to be disturbed in the blower, and the condition that the wind generates vortex in the blower is reduced.

However, the above technical scheme partially solves the problem of air-out turbulence caused by complex internal structure in the prior art, but adopts a plurality of air duct structures for guiding, and the air-guiding cambered surface structure and the spiral blade surface structure adopted in the interior are easy to rub with air under the action of air flow, so that wind noise is generated, and the using effect is affected.

In view of the foregoing, it is desirable to provide an internal air guiding structure of a blower and a blower to overcome the above-mentioned drawbacks.

[ utility model ]

The utility model aims to provide an internal air guide structure of a blower and the blower, and aims to solve the problem that the conventional blower is large in wind noise, reduce the noise generated when the blower operates and improve the use experience.

In order to achieve the above-mentioned purpose, the present utility model provides an internal air guiding structure of a blower, including a housing, and a back cover and a blowing nozzle respectively disposed at two ends of the housing; a wind scooper is arranged between the rear cover and the blowing nozzle; the air guide cover comprises an annular bottom wall, a first guide side wall and a second guide side wall, wherein the first guide side wall extends vertically from the inner side edge of the annular bottom wall, and the second guide side wall extends vertically from the outer side edge of the annular bottom wall; the annular bottom wall, the first diversion side wall and the second diversion side wall are jointly surrounded to form an annular diversion trench; the blowing nozzle is fixed on one side of the second diversion side wall away from the annular bottom wall; and the preset part of the second diversion side wall is also provided with an air inlet communicated with the diversion trench.

In a preferred embodiment, an annular deflector ramp is provided at the junction of the first deflector sidewall and the annular bottom wall.

In a preferred embodiment, the diversion ramp is a beveled or curved surface.

In a preferred embodiment, a fixed bracket is arranged on one side of the first diversion side wall away from the annular bottom wall, and a plurality of through holes communicated with the air outlet are formed in the fixed bracket; the blowing nozzle is provided with a heating support, and the heating support is buckled with the fixed support so that the blowing nozzle is fixedly connected with the wind scooper.

In a preferred embodiment, the fixing bracket is provided with a plurality of limiting grooves, the heating bracket is provided with a plurality of limiting blocks corresponding to the limiting grooves one by one, and the limiting blocks are matched with the limiting grooves so as to fix the heating bracket at a preset position of the fixing bracket.

In a preferred embodiment, a negative ion generator is further arranged in the shell; the fixing support is provided with a mounting hole, and the negative ion generator is fixed on the fixing support through the mounting hole.

In a preferred embodiment, a circuit board is further arranged between the rear cover and the wind scooper; the annular bottom wall deviates from one side of guiding gutter is equipped with a plurality of bracing pieces perpendicularly, the circuit board erects the bracing piece is kept away from the one end of annular bottom wall.

In a preferred embodiment, a plurality of guide grooves are formed in one side of the second guide side wall, which faces away from the guide groove, and the guide grooves are used for being matched with the inner side of the shell to fix the wind scooper at a preset position in the shell.

The utility model also provides a blower comprising the blower inner air guiding structure according to any one of the above embodiments.

According to the internal air guide structure of the blower and the blower, the air guide cover is arranged in the shell, and the annular flow guide groove is formed by the annular bottom wall, the first flow guide side wall and the second flow guide side wall in a surrounding mode, when the blower operates, air flows into the flow guide groove through the air inlet, and because the flow guide groove is an annular area, the air flow contact surface is gentle, noise is not easy to generate, wind noise when the blower is used is reduced, and the use experience is improved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of a blower provided by the present utility model;

figure 2 is a cross-sectional view of the blower A-A of figure 1;

FIG. 3 is an exploded perspective view of the internal air guide structure of the hair dryer provided by the present utility model;

FIG. 4 is an exploded perspective view of the internal air guide structure of the blower of FIG. 3 at an alternative angle;

fig. 5 is a perspective view of a blower housing in the blower internal air guiding structure shown in fig. 3.

Reference numerals in the drawings: 200. a blower; 201. a grip portion; 202. an air outlet part; 203. an air inlet net; 100. an internal air guiding structure of the blower; 10. a housing; 20. a rear cover; 30. a blowing nozzle; 31. a wind impeller; 40. a wind scooper; 41. a first flow directing sidewall; 42. a second flow directing sidewall; 421. a guide groove; 43. an annular bottom wall; 44. a diversion trench; 45. an air outlet; 46. an air inlet; 47. a diversion ramp; 48. a fixed bracket; 49. a support rod; 481. a via hole; 482. a limit groove; 483. a mounting hole; 50. a heating bracket; 60. a negative ion generator; 70. a circuit board.

[ detailed description ] of the utility model

In order to make the objects, technical solutions and advantageous technical effects of the present utility model more apparent, the present utility model will be further described in detail with reference to the accompanying drawings and detailed description. It should be understood that the detailed description is intended to illustrate the utility model, and not to limit the utility model.

It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Example 1

In an embodiment of the present utility model, an internal air guiding structure 100 of a blower is provided, which is used for guiding the airflow direction in the blower 200, reducing the turbulence and the friction noise (i.e. wind noise) in the blower, improving the air outlet efficiency, and finally improving the use experience of the user.

As shown in fig. 1, the blower 200 includes a grip 201 and an air outlet 202. The holding part 201 is provided with an air inlet net 203 at one end far away from the air outlet part 202, so that air can be inlet and foreign matters outside can be filtered to enter the holding part 201. When the blower 200 is operated, external air flows in from the air inlet net 203, passes through the inside of the holding part 201, and then flows out through the air outlet part 202, thereby realizing a directional air outlet function. In this embodiment, the blower internal air guide structure 100 is located within the air outlet portion 202.

As shown in fig. 2 to 4, the blower internal air guiding structure 100 includes a housing 10, and a rear cover 20 and a mouthpiece 30 respectively provided at both ends of the housing 10. The housing 10 has a hollow cylindrical shape, and the rear cover 20 and the mouthpiece 30 are respectively used for closing both ends of the cylinder of the housing 10. The blower nozzle 30 may be provided therein with a blower wheel 31 or the like, so that air in the housing 10 is driven to flow out of the blower nozzle 30.

In the present embodiment, a wind scooper 40 is further provided between the rear cover 20 and the mouthpiece 30. The air guide cover 40 is used for guiding the air flow in the housing 10, so as to avoid generating more turbulence in the housing 10, thereby affecting the air supply efficiency of the air impeller 31.

As shown in fig. 5, the air guiding cover 40 includes an annular bottom wall 43, a first guiding sidewall 41 extending perpendicularly from an inner edge of the annular bottom wall 43, and a second guiding sidewall 42 extending perpendicularly from an outer edge of the annular bottom wall 43. That is, the first guide sidewall 41 is annular and has a radius that corresponds to the inner diameter of the annular bottom wall 43; the second guide sidewall 42 is annular and has a radius corresponding to the outer diameter of the annular bottom wall 43.

Specifically, the annular bottom wall 43, the first guide sidewall 41 and the second guide sidewall 42 enclose an annular guide groove 44. The diversion trench 44 is opened toward the side of the mouthpiece 30, and the mouthpiece 30 is fixed to the side of the second diversion sidewall 42 away from the annular bottom wall 43. The first guiding sidewall 41 is surrounded with an air outlet 45, which may be defined as a main flow path, that is, air near one side of the rear cover 20 flows toward the blowing nozzle 30 through the air outlet 45. The diversion trench 44 may be defined as a secondary flow channel, the preset portion of the second diversion sidewall 42 is further provided with an air inlet 46 communicated with the diversion trench 44, the air of the holding portion 201 enters the diversion trench 44 through the air inlet 46, and then the air flows of the primary flow channel and the secondary flow channel are combined and flow out through the blowing nozzle 30. Therefore, by arranging the main flow channel and the auxiliary flow channel, the turbulence condition in the shell 10 is effectively reduced, and the air supply efficiency is improved. The air entering the flow guiding groove 44 through the air inlet 46 is finally discharged to the blowing nozzle 30 under the action of the annular area of the flow guiding groove 44, and the air flow contact surface is gentle due to the circular structure of the flow guiding groove 44, so that noise is not easy to generate.

Further, an annular diversion ramp 47 is provided at the junction of the first diversion sidewall 41 and the annular bottom wall 43. Wherein, the diversion ramp 47 is a bevel or a cambered surface. That is, the cross section of the diversion ramp 47 is an inclined straight line or an arc. The first diversion ramp 47 can guide and converge the air at the rear cover 20 into the air outlet 45; secondly, effectively eliminate the dead angle in guiding gutter 44 bottom to when making the air pass through air intake 46 entering guiding gutter 44, the air current is difficult for acting on the corner of bottom and produces the vortex, and then has increased stability, further reduced wind noise.

In some embodiments, a side of the first guide sidewall 41 remote from the annular bottom wall 43 is provided with a fixing bracket 48. That is, the fixing bracket 48 is erected at the air outlet 45 and is located in the diversion trench 44. The fixing bracket 48 is provided with a plurality of through holes 481 communicated with the air outlet 45, so that the fixing bracket 48 is prevented from blocking the air outlet 45. The blowing nozzle 30 is provided with a heating bracket 50, and the heating bracket 50 is buckled with the fixed bracket 48 so as to fixedly connect the blowing nozzle 30 with the wind scooper 40. The heating bracket 50 includes a heating wire and the like, and after being electrified, the temperature of the heating bracket rises to heat the air flowing through the heating bracket, thereby realizing the function of discharging hot air from the blowing nozzle 30.

The fixing bracket 48 is provided with a plurality of limiting grooves 482, and the heating bracket 50 is provided with a plurality of limiting blocks (not shown) corresponding to the limiting grooves 482 one by one. The stopper cooperates with the stopper groove 482 to fix the heating bracket 50 at a predetermined position of the fixing bracket 48.

Further, a negative ion generator 60 is also provided in the housing 10. Specifically, the fixing bracket 48 is provided with a mounting hole 483. The negative ion generator 60 is fixed to the fixing bracket 48 by means of a snap-fit or a bolt connection or the like through the mounting hole 483.

Further, a circuit board 70 is further disposed between the rear cover 20 and the air guiding cover 40. Wherein, a plurality of support bars 49 are vertically arranged on one side of the annular bottom wall 43 away from the diversion trench 44, and a circuit board 70 is arranged at one end of the support bar 49 away from the annular bottom wall 43. The circuit board 70 then performs the control and regulation functions of the blower 200.

Therefore, the fixing bracket 48 and the heating bracket 50 are matched, and the supporting rod 49 and the circuit board 70 are matched, so that the structure is fixed, the whole structure is more compact, and the volume of the air outlet 202 of the blower 200 is reduced.

In one embodiment, a plurality of guiding grooves 421 are disposed on a side of the second guiding sidewall 42 facing away from the guiding groove 44, and the guiding grooves 421 are configured to cooperate with an inner side of the housing 10 to fix the wind scooper 40 at a preset position in the housing 10.

The present utility model further provides a blower 200, which includes a holding portion 201 and an air outlet portion 202, wherein the air outlet portion 202 is provided with the blower inner air guiding structure 100 according to any one of the above embodiments.

In summary, according to the blower internal air guiding structure 100 and the blower 200 provided by the utility model, the air guiding cover 40 is arranged in the housing 10, and the annular bottom wall 43, the first guide side wall 41 and the second guide side wall 42 are arranged together to form the annular guide groove 44, when the blower 200 operates, air flows into the guide groove 44 through the air inlet 46, and the guide groove 44 is an annular area, so that the air flow contact surface is gentle, noise is not easy to generate, the wind noise of the blower 200 during use is reduced, and the use experience is improved.

The present utility model is not limited to the details and embodiments described herein, and thus additional advantages and modifications may readily be made by those skilled in the art, without departing from the spirit and scope of the general concepts defined in the claims and the equivalents thereof, and the utility model is not limited to the specific details, representative apparatus and illustrative examples shown and described herein.

Claims (9)

1. The internal air guide structure of the blower is characterized by comprising a shell, a rear cover and a blowing nozzle, wherein the rear cover and the blowing nozzle are respectively arranged at two ends of the shell; a wind scooper is arranged between the rear cover and the blowing nozzle; the air guide cover comprises an annular bottom wall, a first guide side wall and a second guide side wall, wherein the first guide side wall extends vertically from the inner side edge of the annular bottom wall, and the second guide side wall extends vertically from the outer side edge of the annular bottom wall; the annular bottom wall, the first diversion side wall and the second diversion side wall are jointly surrounded to form an annular diversion trench; the blowing nozzle is fixed on one side of the second diversion side wall away from the annular bottom wall; and the preset part of the second diversion side wall is also provided with an air inlet communicated with the diversion trench.

2. The blower inner air guide structure of claim 1, wherein an annular deflector ramp is provided at the junction of the first deflector sidewall and the annular bottom wall.

3. The internal air guiding structure of a blower according to claim 2, wherein the guiding ramp is a bevel or a cambered surface.

4. The blower internal air guiding structure as set forth in claim 1, wherein a fixed bracket is provided on a side of the first guide sidewall away from the annular bottom wall, and a plurality of through holes are provided on the fixed bracket and communicated with the air outlet; the blowing nozzle is provided with a heating support, and the heating support is buckled with the fixed support so that the blowing nozzle is fixedly connected with the wind scooper.

5. The blower internal air guiding structure according to claim 4, wherein the fixing bracket is provided with a plurality of limiting grooves, the heating bracket is provided with a plurality of limiting blocks corresponding to the limiting grooves one by one, and the limiting blocks are matched with the limiting grooves so as to fix the heating bracket at a preset position of the fixing bracket.

6. The blower internal air guide structure according to claim 4, wherein the housing is further provided therein with a negative ion generator; the fixing support is provided with a mounting hole, and the negative ion generator is fixed on the fixing support through the mounting hole.

7. The blower internal air guide structure according to claim 1, wherein a circuit board is further provided between the rear cover and the air guide cover; the annular bottom wall deviates from one side of guiding gutter is equipped with a plurality of bracing pieces perpendicularly, the circuit board erects the bracing piece is kept away from the one end of annular bottom wall.

8. The blower internal air guide structure as set forth in claim 1, wherein a side of the second air guide sidewall facing away from the air guide groove is provided with a plurality of guide grooves for cooperating with an inner side of the housing to fix the air guide housing at a predetermined position in the housing.

9. A hair dryer comprising an internal air guiding structure as claimed in any one of claims 1 to 8.