CN213908941U - Hand-held hair drier - Google Patents
Hand-held hair drier Download PDFInfo
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- CN213908941U CN213908941U CN202022215409.9U CN202022215409U CN213908941U CN 213908941 U CN213908941 U CN 213908941U CN 202022215409 U CN202022215409 U CN 202022215409U CN 213908941 U CN213908941 U CN 213908941U
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Abstract
The utility model provides a hand-held hair drier, which relates to the technical field of hand-held hair drier, wherein an air inlet of the hand-held hair drier is positioned on a handle, and the rear end of a body part is closed, so that when the hand-held hair drier is used, the air inlet on the handle is far away from the hair of a user and is not easy to be drawn into the hand-held hair drier; and the heating structure, the heat-resistant plate and the fan circuit board are sequentially arranged in the first air channel, the air guide port faces the heating structure, and the heat-resistant plate is used for preventing heat generated by the heating structure from directly radiating to the fan circuit board. After the air current in the second air duct blows to the heating structure from the air guide opening, the air current is blocked by the heat-resistant plate, so that most of the air current moves towards the air outlet, the influence of hot air on the fan circuit board is reduced, the temperature of the fan circuit board is reduced, and the probability of damage of electrical elements on the fan circuit board is reduced.
Description
Technical Field
The utility model belongs to the technical field of handheld hair-dryer technique and specifically relates to a handheld hair-dryer is related to.
Background
The hand-held blower directly drives the rotor by the motor 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 wire on the heating bracket in the air nozzle is heated by electricity, hot air is blown out; if the selection switch does not electrify the heating wire to generate heat, cold air is blown out.
Conventional hand held hair dryers suffer from the following problems: firstly, when a user with longer hair uses the handheld blower, the user can easily suck the long hair into an air inlet at the rear end of the machine body, and certain potential safety hazards exist; and secondly, a fan circuit board for outputting voltage to the fan in the handheld blower is positioned in the air duct, heat generated by the heating wire can be transferred to the fan circuit board, and after the ambient temperature of the fan circuit board rises, the probability of damage to electrical elements on the fan circuit board is higher, so that the service life of the fan circuit board is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a handheld hair-dryer to alleviate current handheld hair-dryer and be drawn into the hair easily, and the high temperature gas that heating element produced can direct contact to the fan circuit board of fan subassembly, cause the technical problem of damage to the electric elements on the fan circuit board easily.
The embodiment of the utility model provides a hand-held hair-dryer, hand-held hair-dryer includes: the fan comprises a body part, a handle, a heating structure, a fan assembly, a heat resisting plate and a fan circuit board, wherein the fan circuit board is electrically connected with the fan assembly, and the handle is connected below the body part;
the front end of the body part is provided with an air outlet, the rear end of the body part is closed, and a first air duct communicated with the air outlet is arranged inside the body part;
the handle is provided with an air inlet, an air guide opening and a second air duct communicated with the air inlet and the air guide opening; the air guide port is communicated with the first air duct; the fan assembly is arranged between the air inlet and the air guide opening;
the heating structure, the heat-resistant plate and the fan circuit board are sequentially arranged in the first air channel along the front-back direction of the body part, the air guide opening faces the heating structure, and the heat-resistant plate is used for preventing heat generated by the heating structure from directly radiating to the fan circuit board.
Furthermore, the heating structure is connected to the front surface of the heat-resistant plate, and the fan circuit board is connected to the rear surface of the heat-resistant plate.
Furthermore, a bulge which protrudes backwards is arranged on the rear surface of the heat-resistant plate, the fan circuit board is arranged on the bulge, and the area of the cross section of the bulge is smaller than the surface area of the fan circuit board, so that an air gap is formed between the fan circuit board and the heat-resistant plate.
Further, the number of the protrusions is multiple.
Further, the fan circuit board is clamped, buckled or connected through a threaded component with the protrusion.
Furthermore, a threaded column extending towards the rear side is arranged at the top end of the protrusion, and the projection of the threaded column towards the direction of the protrusion falls into the top end of the protrusion;
the fan circuit board is provided with a mounting hole corresponding to the diameter of the threaded column, the threaded column is used for being connected with the mounting hole in an inserting mode, and the fan circuit board is fixed on the protrusion through a nut.
Furthermore, the handheld blower comprises a heat resistance cylinder, the heat resistance cylinder is arranged along the front-back direction of the body part, the opening of the heat resistance cylinder faces the rear end of the body part, the heating structure is fixed in the heat resistance cylinder, and the heat resistance plate is fixed at the rear end of the heating structure;
an air inlet communicated with the air guide opening is formed in the side wall of the heat resistance cylinder, and an air outlet facing the front side is formed in the front end face of the heat resistance cylinder.
Further, a heat dissipation space for accommodating a fan circuit board is formed in a gap between the heat-resistant plate and the inner surface of the rear end of the body;
the surface area of the heat-resistant plate is smaller than that of the opening at the rear end of the heat-resistant cylinder, and an annular gap is formed between the heat-resistant plate and the heat-resistant cylinder, so that gas flowing out of the air guide opening can enter and exit the heat dissipation space through the annular gap.
Furthermore, a sealing sleeve is arranged between the outer side of one end of the opening of the heat resisting cylinder and the inner surface of the body part, and the sealing sleeve is used for filling a gap between the inner wall of the body part and the outer wall of the heat resisting cylinder so as to improve the flow of airflow flowing through the fan circuit board and entering the heat resisting cylinder.
Furthermore, a vibration damping structure is arranged between the outer wall of the fan assembly and the inner wall of the handle.
The embodiment of the utility model provides a handheld hair-dryer includes: the fan comprises a body part, a handle, a heating structure, a fan assembly, a heat resisting plate and a fan circuit board, wherein the fan circuit board is electrically connected with the fan assembly, and the handle is connected below the body part; the front end of the body part is provided with an air outlet, the rear end of the body part is closed, and a first air duct communicated with the air outlet is arranged inside the body part; the handle is provided with an air inlet, an air guide opening and a second air duct communicated with the air inlet and the air guide opening; the air guide port is communicated with the first air duct; the fan assembly is arranged between the air inlet and the air guide opening; the heating structure, the heat-resistant plate and the fan circuit board are sequentially arranged in the first air channel along the front-back direction of the body part, the air guide opening faces the heating structure, and the heat-resistant plate is used for preventing heat generated by the heating structure from directly radiating to the fan circuit board. The air inlet of the handheld blower is positioned on the handle, and the rear end of the body part is closed, so that when the handheld blower is used, the air inlet on the handle is far away from the hair of a user, and the handheld blower is not easy to be involved. Meanwhile, after the air flow in the second air channel is blown to the heating structure from the air guide opening, the air flow is blocked by the heat-resistant plate, so that most of the air flow moves towards the air outlet, the influence of hot air on the fan circuit board is reduced, the temperature of the fan circuit board is reduced, and the probability of damage of electrical elements on the fan circuit board is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a sectional view of a hand-held hair dryer according to an embodiment of the present invention;
fig. 2 is a sectional view of a body of a hand-held hair dryer according to an embodiment of the present invention.
Icon: 100-a body; 110-an air outlet; 120-a heat dissipation space; 200-a handle; 210-a second air duct; 300-a heating structure; 400-a fan assembly; 510-heat resistant plate; 511-bump; 520-heat resistance cylinder; 600-a fan circuit board; 700-sealing sleeve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, wherein the direction of the arrow in fig. 2 is the direction of air flow, the embodiment of the present invention provides a hand-held hair dryer comprising: the fan module comprises a body 100, a handle 200, a heating structure 300, a fan assembly 400, a heat-resistant plate 510 and a fan circuit board 600, wherein the fan circuit board 600 is electrically connected with the fan assembly 400, the fan circuit board 600 is used for outputting voltage to the fan assembly 400, and the handle 200 is connected below the body 100.
Different from the prior art, the front end of the body 100 is provided with an air outlet 110, the rear end of the body 100 is closed, and the interior of the body 100 is provided with a first air duct communicated with the air outlet 110; the handle 200 is provided with an air inlet, an air guide opening and a second air duct 210 which is communicated with the air inlet and the air guide opening; the air guide port is communicated with the first air duct; the fan assembly 400 is disposed between the air inlet and the air outlet. The air inlet of the hand-held hair dryer is located on the handle 200, and the rear end of the body 100 is closed, so that when the hand-held hair dryer is used, the air inlet of the handle 200 is far away from the hair of a user, and is not easy to be involved in the hand-held hair dryer.
Along the front-back direction of the body 100, the heating structure 300, the heat-resistant plate 510 and the fan circuit board 600 are sequentially arranged in the first air duct, the air guiding opening faces the heating structure 300, and the heat-resistant plate 510 is used for preventing heat generated by the heating structure 300 from directly radiating to the fan circuit board 600. After the airflow in the second air duct 210 blows to the heating structure 300 from the air guiding opening, the airflow is blocked by the heat blocking plate 510, so that most of the airflow moves toward the air outlet 110, the influence of hot air on the fan circuit board 600 is reduced, the temperature of the fan circuit board 600 is reduced, and the probability of damage to electrical components on the fan circuit board 600 is reduced.
The heating structure 300 is attached to the front surface of the heat blocking plate 510, and the fan circuit board 600 is attached to the rear surface of the heat blocking plate 510.
The heat-resistant plate 510 is made of a heat-insulating material, which can reduce the heat transfer rate. The heating structure 300 and the fan circuit board 600 are both installed on the heat-resistant plate 510, the heat-resistant plate 510 can maximally block the fan circuit board 600 because the heat emitted by the heating structure 300 is radiated outwards, and the heat-resistant plate 510 can play a role in blocking heat radiation, and the rear side surface of the heat-resistant plate is minimally affected by radiation, so that the temperature rising amplitude of the fan circuit board 600 can be reduced.
The rear surface of the heat-resistant plate 510 is provided with a protrusion 511 protruding backwards, the fan circuit board 600 is mounted on the protrusion 511, and the cross-sectional area of the protrusion 511 is smaller than the surface area of the fan circuit board 600, so that an air gap is formed between the fan circuit board 600 and the heat-resistant plate 510.
The fan circuit board 600 is mounted on the protrusion 511 of the rear side of the heat blocking plate 510 such that an air gap is provided between the side of the fan circuit board 600 facing the heat blocking plate 510 and the heat blocking plate 510 to prevent heat from being accumulated between the heat blocking plate 510 and the fan circuit board 600. Meanwhile, the contact area between the heat-resistant plate 510 and the air is increased, so that the heat dissipation area of the fan circuit board 600 is enlarged, and the temperature rise amplitude of the fan circuit board 600 can be reduced.
The number of the protrusions 511 may be plural.
The plurality of protrusions 511 may be located at four corners or four sides of the fan circuit board 600, thereby stably connecting the heat blocking plate 510 to the fan circuit board 600.
Specifically, a threaded column extending to the rear side is arranged at the top end of the protrusion 511, and a projection of the threaded column towards the direction of the protrusion 511 falls in the top end of the protrusion 511; the fan circuit board 600 is provided with a mounting hole corresponding to the diameter of the threaded column, the threaded column is used for being connected with the mounting hole in an inserting mode, and the fan circuit board 600 is fixed on the protrusion 511 through a nut.
The hand-held hair dryer comprises a heat resistance cylinder 520, wherein the heat resistance cylinder 520 is arranged along the front-back direction of the body part 100, the opening of the heat resistance cylinder 520 faces the rear end of the body part 100, the heating structure 300 is fixed in the heat resistance cylinder 520, and the heat resistance plate 510 is fixed at the rear end of the heating structure 300; an air inlet communicated with the air guide opening is formed in the side wall of the heat resistance cylinder 520, and an air outlet facing the front side is formed in the front end face of the heat resistance cylinder 520.
In the handle 200, the airflow flowing from bottom to top enters the heat resistance cylinder 520 from the air guide opening, the air exchanges heat with the heating structure 300 in the heat resistance cylinder 520, the heat resistance cylinder 520 can play a role in blocking and guiding the airflow, so that the airflow entering the heat resistance cylinder 520 can contact the heating structure 300 and then flows to the air outlet 110 of the handheld blower from the air outlet, the diffusion of the hot air flowing to other directions is avoided, and the heat loss is reduced.
A gap between the heat blocking plate 510 and the inner surface of the rear end of the body 100 forms a heat dissipation space 120 accommodating the fan circuit board 600; the surface area of the heat-resistant plate 510 is smaller than the area of the rear opening of the heat-resistant cylinder 520, and an annular gap is formed between the heat-resistant plate 510 and the heat-resistant cylinder 520, so that the gas flowing out of the air guide opening can enter and exit the heat dissipation space 120 through the annular gap.
The air flow flowing out from the handle 200 flows into the heat-resistant cylinder 520 from the side wall of the heat-resistant cylinder 520 close to the lower part, because the area of the heat-resistant plate 510 is smaller than that of the opening of the heat-resistant cylinder 520, part of the air flow enters the heat-dissipating space 120 from the lower part of the annular gap, contacts with the fan circuit board 600 and cools the fan circuit board 600, then continues to move upwards, returns to the heat-resistant cylinder 520 from the upper part of the annular gap, and finally flows out from the air outlet after contacting with the heating structure 300. By introducing part of the air flow to the rear side of the heat resistant plate 510, the fan circuit board 600 can be cooled.
A sealing sleeve 700 is arranged between the outer side of one end of the opening of the heat-resistant cylinder 520 and the inner surface of the body 100, and the sealing sleeve 700 is used for filling a gap between the inner wall of the body 100 and the outer wall of the heat-resistant cylinder 520 so as to improve the flow rate of the airflow which flows through the fan circuit board 600 and enters the heat-resistant cylinder 520.
The sealing sleeve 700 is sleeved outside the heat-resistant cylinder 520 and fills a gap between the inner wall of the body part 100 and the outer wall of the heat-resistant cylinder 520, airflow enters the heat-radiating space 120 to exchange heat with the fan circuit board 600 and then flows into the heat-resistant cylinder 520, hot air is finally formed and blown out from the air outlet 110, and the phenomenon that the air generates turbulent flow in the body part 100 and generates noise is avoided.
A vibration damping structure is disposed between the outer wall of the blower assembly 400 and the inner wall of the handle 200.
The damping structure can be for cup jointing the flexible glue cover between fan subassembly 400 and handle 200 inner wall, and the material can be thermoplastic elastomer material (TPE elastic material), and hardness is between 60-70 degrees, and the flexible glue cover can absorb the vibration that fan subassembly 400 produced, improves the comfort that the user gripped.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A hand held hair dryer, said hand held hair dryer comprising: the fan comprises a body (100), a handle (200), a heating structure (300), a fan assembly (400), a heat-resistant plate (510) and a fan circuit board (600), wherein the fan circuit board (600) is electrically connected with the fan assembly (400), and the handle (200) is connected below the body (100);
an air outlet (110) is formed in the front end of the body (100), the rear end of the body (100) is closed, and a first air duct communicated with the air outlet (110) is formed in the body (100);
the handle (200) is provided with an air inlet, an air guide opening and a second air duct (210) communicated with the air inlet and the air guide opening; the air guide port is communicated with the first air duct; the fan assembly (400) is arranged between the air inlet and the air guide opening;
along the front-back direction of the body part (100), the heating structure (300), the heat-resistant plate (510) and the fan circuit board (600) are sequentially arranged in the first air channel, the air guide opening faces the heating structure (300), and the heat-resistant plate (510) is used for preventing heat generated by the heating structure (300) from directly radiating to the fan circuit board (600).
2. The hand held hair dryer of claim 1, wherein said heating structure (300) is attached to a front surface of said heat resistant plate (510), and said blower circuit board (600) is attached to a rear surface of said heat resistant plate (510).
3. The hand-held hair dryer as claimed in claim 2, wherein a protrusion (511) protruding rearward is provided on a rear surface of the heat blocking plate (510), the blower circuit board (600) is mounted on the protrusion (511), and an area of a cross section of the protrusion (511) is smaller than a surface area of the blower circuit board (600) so that an air gap is provided between the blower circuit board (600) and the heat blocking plate (510).
4. Hand-held hair dryer according to claim 3, characterized in that said projections (511) are plural in number.
5. Hand-held hair dryer according to claim 3, characterized in that said blower circuit board (600) is snap-fitted, snap-fitted or connected by a threaded assembly with said protrusions (511).
6. Hand-held hair dryer according to claim 3, characterized in that a threaded post extending towards the rear side is provided on the top of the projection (511) and the projection of the threaded post towards the direction of the projection (511) falls within the top of the projection (511);
the fan circuit board (600) is provided with a mounting hole corresponding to the diameter of the threaded column, the threaded column is used for being connected with the mounting hole in an inserting mode, and the fan circuit board (600) is fixed on the protrusion (511) through a nut.
7. The hand-held hair dryer according to claim 1, wherein the hand-held hair dryer comprises a heat-blocking cylinder (520), the heat-blocking cylinder (520) is arranged along the front-rear direction of the body (100), the opening of the heat-blocking cylinder (520) faces the rear end of the body (100), the heating structure (300) is fixed in the heat-blocking cylinder (520), and the heat-blocking plate (510) is fixed at the rear end of the heating structure (300);
an air inlet communicated with the air guide opening is formed in the side wall of the heat resistance cylinder (520), and an air outlet facing the front side is formed in the front end face of the heat resistance cylinder (520).
8. Hand-held hair dryer according to claim 7, characterized in that the gap between the heat-resistant plate (510) and the inner surface of the rear end of the body (100) forms a heat-dissipating space (120) accommodating a fan circuit board (600);
the surface area of the heat-resistant plate (510) is smaller than the area of the rear end opening of the heat-resistant cylinder (520), and an annular gap is formed between the heat-resistant plate (510) and the heat-resistant cylinder (520), so that the gas flowing out of the air guide opening can enter and exit the heat dissipation space (120) through the annular gap.
9. Hand-held hair dryer as in claim 8, characterized in that between the outside of the open end of the heat-resistant cylinder (520) and the inner surface of the body (100) there is a sealing sleeve (700), said sealing sleeve (700) being intended to fill the gap between the inner wall of the body (100) and the outer wall of the heat-resistant cylinder (520) in order to increase the flow of the air flowing through the blower circuit board (600) and into the heat-resistant cylinder (520).
10. Hand-held hair dryer according to any one of claims 1-9, wherein a vibration damping structure is provided between the outer wall of the blower assembly (400) and the inner wall of the handle (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022215409.9U CN213908941U (en) | 2020-09-29 | 2020-09-29 | Hand-held hair drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022215409.9U CN213908941U (en) | 2020-09-29 | 2020-09-29 | Hand-held hair drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213908941U true CN213908941U (en) | 2021-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022215409.9U Active CN213908941U (en) | 2020-09-29 | 2020-09-29 | Hand-held hair drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213908941U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114532687A (en) * | 2022-01-29 | 2022-05-27 | 无锡睿米信息技术有限公司 | Hair drier with heat dissipation structure |
| CN116391953A (en) * | 2023-05-10 | 2023-07-07 | 深圳市卓立智能制造有限公司 | Blowing device and handheld hair dryer |
| CN116391953B (en) * | 2023-05-10 | 2024-05-10 | 深圳市卓立智能制造有限公司 | Blowing device and handheld hair dryer |
-
2020
- 2020-09-29 CN CN202022215409.9U patent/CN213908941U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114532687A (en) * | 2022-01-29 | 2022-05-27 | 无锡睿米信息技术有限公司 | Hair drier with heat dissipation structure |
| CN116391953A (en) * | 2023-05-10 | 2023-07-07 | 深圳市卓立智能制造有限公司 | Blowing device and handheld hair dryer |
| CN116391953B (en) * | 2023-05-10 | 2024-05-10 | 深圳市卓立智能制造有限公司 | Blowing device and handheld hair dryer |
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