CN213908942U - Electric hair drier - Google Patents
Electric hair drier Download PDFInfo
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- CN213908942U CN213908942U CN202022215460.XU CN202022215460U CN213908942U CN 213908942 U CN213908942 U CN 213908942U CN 202022215460 U CN202022215460 U CN 202022215460U CN 213908942 U CN213908942 U CN 213908942U
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Abstract
本实用新型提供了一种电吹风，涉及电吹风技术领域，电吹风中的风机启动后，外界的气体可以通过进风通道的进风口进入到机体内，并沿着进风通道分别进入到第一腔体和第二腔体内，进入到第一腔体的气流可以与加热机构发生热交换，温度升高后从出风口吹出；进入到第二腔体内的气流可以与第二腔体内的风机线路板发生热交换，进而对风机线路板进行冷却。第一腔体和第二腔体的设置可以将加热机构和风机线路板进行分隔，避免加热机构产生的热量直接作用在风机线路板上，延缓了风机线路板周围温度的升高速度；将部分由外界流入的气流引入到第二腔体内，利用气流对风机线路板进行冷却，进而降低风机线路板上电气元件损坏的几率。
The utility model provides a hair dryer, which relates to the technical field of hair dryers. After the fan in the hair dryer is started, the outside air can enter the body through the air inlet of the air inlet channel, and enter the first In a cavity and a second cavity, the airflow entering the first cavity can exchange heat with the heating mechanism, and blow out from the air outlet after the temperature rises; the airflow entering the second cavity can interact with the fan in the second cavity. The circuit board undergoes heat exchange, thereby cooling the fan circuit board. The setting of the first cavity and the second cavity can separate the heating mechanism and the fan circuit board, so as to prevent the heat generated by the heating mechanism from directly acting on the fan circuit board, which delays the temperature rise around the fan circuit board; The airflow flowing in from the outside is introduced into the second cavity, and the airflow is used to cool the fan circuit board, thereby reducing the probability of damage to the electrical components on the fan circuit board.
Description
Technical Field
The utility model belongs to the technical field of hairdryer technique and specifically relates to a hairdryer is related to.
Background
The electric hair drier is a small electric appliance necessary for daily life, is often used for quickly drying hair, and provides great convenience for the life of people.
The existing hair drier comprises an air inlet and an air outlet, a heating mechanism is arranged on a channel between the air inlet and the air outlet, and heat generated by the heating mechanism is used for heating air flow entering the hair drier.
In the prior art, a fan circuit board of a fan for outputting voltage in the electric hair drier is positioned in a channel, heat generated by a heating mechanism can be transferred to the fan circuit board, and after the ambient temperature of the fan circuit board rises, the probability of damage of electrical elements on the fan circuit board is high, so that the service life of the fan circuit board is shortened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hairdryer to alleviate in the current hairdryer, the high temperature gas that heating element produced can the direct contact fan circuit board to the fan, causes the technical problem of damage to the electric elements on the fan circuit board easily.
The embodiment of the utility model provides a pair of hairdryer, the hairdryer includes: the fan comprises a machine body, a heating mechanism, a fan and a fan circuit board, wherein the fan circuit board is electrically connected with the fan; an air inlet channel, a first cavity and a second cavity are arranged in the machine body, the fan is arranged in the air inlet channel, the heating mechanism is arranged in the first cavity, and the fan circuit board is arranged in the second cavity;
the air inlet channel comprises an air inlet communicated with the outside and air guide openings respectively communicated with the first cavity and the second cavity;
the first cavity and the second cavity are communicated with an air outlet of the electric hair drier.
In an optional embodiment, the first cavity is directly communicated with the air outlet of the electric hair dryer, and a through hole communicating the first cavity with the second cavity is arranged between the first cavity and the second cavity, so that the second cavity is communicated with the air outlet of the electric hair dryer through the through hole and the first cavity.
In an optional embodiment, an insulation bin is arranged in the machine body, and the heating mechanism is arranged in the insulation bin; the heat insulation bin is provided with an air inlet communicated with the air inlet channel, and the heat insulation bin is provided with an air outlet communicated with the air outlet;
the inner cavity of the heat insulation bin forms a first cavity; the outer wall of the heat insulation bin and the gap between the inner walls of the shell of the machine body are communicated with the air inlet channel, and the gap forms the second cavity.
In an alternative embodiment, the heat insulation bin comprises a heat insulation barrel and a heat insulation plate, the heat insulation plate is located at an opening of the heat insulation barrel, the heating mechanism is fixed in the heat insulation barrel, and the heat insulation plate is fixed at the rear end of the heating mechanism; the fan circuit board is fixed on the side wall of one side of the heat insulation plate, which faces away from the heating mechanism.
In an alternative embodiment, the body comprises a head part and a handle which are communicated with each other, the first cavity and the second cavity are positioned in the head part, and the air inlet channel is positioned in the handle; the air inlet is positioned on the handle.
In an optional embodiment, the fan circuit board is parallel to the length direction of the air inlet channel.
In an alternative embodiment, the inner wall of the head is rounded.
In an alternative embodiment, the air inlet is located on a circumferential side wall of the lower end of the handle.
In an alternative embodiment, a filter screen is arranged inside the air inlet.
In an optional embodiment, a vibration damping structure is arranged between the fan and the air inlet channel.
The embodiment of the utility model provides an electric hair drier includes: the fan comprises a machine body, a heating mechanism, a fan and a fan circuit board, wherein the fan circuit board is electrically connected with the fan; an air inlet channel, a first cavity and a second cavity are arranged in the machine body, the fan is arranged in the air inlet channel, the heating mechanism is arranged in the first cavity, and the fan circuit board is arranged in the second cavity; the air inlet channel comprises an air inlet communicated with the outside and air guide openings respectively communicated with the first cavity and the second cavity; the first cavity and the second cavity are communicated with an air outlet of the electric hair drier. The scheme has the advantages that: after a fan in the electric hair drier is started, external air can enter the machine body through an air inlet of an air inlet channel and respectively enter a first cavity and a second cavity along the air inlet channel, the air flow entering the first cavity can exchange heat with a heating mechanism, and the air flow is blown out from an air outlet after the temperature is increased; the air flow entering the second cavity can exchange heat with the fan circuit board in the second cavity, and then the fan circuit board is cooled. The first cavity and the second cavity can separate the heating mechanism from the fan circuit board, so that heat generated by the heating mechanism is prevented from directly acting on the fan circuit board, and the rising speed of the temperature around the fan circuit board is delayed; the part of air flow flowing into the second cavity from the outside is introduced into the second cavity, and the fan circuit board is cooled by the air flow, so that the temperature of the fan circuit board is reduced, and the probability of damage of the 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 the electric hair drier provided by the embodiment of the utility model;
fig. 2 is a sectional view of the head of the hair dryer provided by the embodiment of the present invention.
Icon: 100-a header; 110-an air outlet; 200-a handle; 210-air inlet channel; 310-a fan; 320-a heating mechanism; 400-fan circuit board; 510-a first cavity; 520-a second cavity; 610-a heat insulation cylinder; 620-insulation board.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
As shown in fig. 1 and fig. 2, wherein, the direction of the arrow in fig. 2 is the direction of the air current, the embodiment of the present invention provides an electric hair dryer, which comprises: the fan comprises a body, a heating mechanism 320, a fan 310 and a fan circuit board 400, wherein the fan circuit board 400 is electrically connected with the fan 310, and the fan circuit board 400 is used for outputting voltage to the fan 310. The fan circuit board 400 is used for controlling the fan 310, belongs to a conventional electric control element in the electric hair dryer, and the structure and the function of the fan circuit board are not described again.
The air intake channel 210, the first cavity 510 and the second cavity 520 are arranged inside the machine body. The fan 310 is disposed in the air intake channel 210, the heating mechanism 320 is disposed in the first cavity 510, and the fan circuit board 400 is disposed in the second cavity 520. The air intake channel 210 includes an air inlet communicated with the outside and an air guide opening respectively communicated with the first cavity 510 and the second cavity 520, and the air flow flowing out from the air guide opening is divided into two parts, one part flows into the first cavity 510 and the other part flows into the second cavity 520. The first cavity 510 and the second cavity 520 are both communicated with the air outlet 110 of the hair dryer, and the air flow heated by the heating mechanism 320 and the air flow cooled by the fan circuit board 400 finally flow out of the air outlet 110 of the hair dryer.
After the blower 310 in the electric hair dryer is started, external air can enter the machine body through the air inlet of the air inlet channel 210 and respectively enter the first cavity 510 and the second cavity 520 along the air inlet channel 210, the air flow entering the first cavity 510 can exchange heat with the heating mechanism 320, and the air flow is blown out from the air outlet 110 after the temperature is increased; the airflow entering the second cavity 520 may exchange heat with the fan circuit board 400 in the second cavity 520, thereby cooling the fan circuit board 400. The arrangement of the first cavity 510 and the second cavity 520 can separate the heating mechanism 320 from the fan circuit board 400, so that heat generated by the heating mechanism 320 is prevented from directly acting on the fan circuit board 400, and the rising speed of the temperature around the fan circuit board 400 is delayed; part of the air flow flowing from the outside is introduced into the second cavity 520, and the fan circuit board 400 is cooled by the air flow, so that the temperature of the fan circuit board 400 is reduced, and the probability of damage to electrical components on the fan circuit board 400 is reduced.
The first cavity 510 is directly communicated with the air outlet 110 of the electric hair dryer, and a through hole for communicating the first cavity 510 with the second cavity 520 is arranged between the first cavity 510 and the second cavity 520, so that the second cavity 520 is communicated with the air outlet 110 of the electric hair dryer through the through hole and the first cavity 510.
In order to reasonably utilize the space inside the body, in this embodiment, the first cavity 510 and the second cavity 520 are communicated by the through hole, the first cavity 510 is closer to the air outlet 110 of the hair dryer, the air outlet 110 is located at a low-pressure end, and the air flows inside the first cavity 510 and the second cavity 520 both flow toward the air outlet 110. The airflow entering the second cavity 520 and exchanging heat with the fan circuit board 400 may enter the first cavity 510 from the through hole, and flow out of the air outlet 110 together with the airflow directly entering the first cavity 510 after converging. The number of air ducts in the machine body can be reduced by the arrangement, so that the structure in the machine body is simpler and more reasonable, and the electric hair drier is more convenient to prepare.
An insulation bin is arranged in the machine body, and the heating mechanism 320 is arranged in the insulation bin; an air inlet communicated with the air inlet channel 210 is formed in the heat insulation bin, and an air outlet communicated with the air outlet 110 is formed in the heat insulation bin; the inner cavity of the thermal insulation bin forms a first cavity 510; the outer wall of the heat insulation bin and the inner wall of the shell of the machine body are communicated with the air inlet channel 210 through a gap, and the second cavity 520 is formed in the gap.
The heat insulation cabin is made of heat insulation materials, so that heat transfer can be reduced. The heat insulation bin wraps the heating mechanism 320, so that the heating mechanism 320 is isolated from the fan circuit board 400, hot air in the heat insulation bin flows to the air outlet 110 from the air outlet, the radiation heat of the heating mechanism 320 to the fan circuit board 400 is reduced, the ambient temperature of the fan circuit board 400 is reduced, and the service life of the fan circuit board 400 can be prolonged.
The heat insulation bin comprises a heat insulation barrel 610 and a heat insulation plate 620, the heat insulation plate 620 is positioned at an opening of the heat insulation barrel 610, the heating mechanism 320 is fixed in the heat insulation barrel 610, and the heat insulation plate 620 is fixed at the rear end of the heating mechanism 320; the fan circuit board 400 is fixed to a side wall of the heat insulation board 620 on a side facing away from the heating mechanism 320.
Specifically, the heat insulation bin comprises a heat insulation cylinder 610, an opening of the heat insulation cylinder 610 faces to the rear end, the heating mechanism 320 is fixedly installed in the heat insulation cylinder 610, the heat insulation plate 620 is fixed at the rear end of the heating mechanism 320, the fan circuit board 400 is fixed at the rear side of the heat insulation plate 620, the heat insulation plate 620 forms a heat insulation structure with a first cavity 510 and a second cavity 520, the airflow flowing in from the air guide opening is divided into two parts, one part of the airflow directly enters the heat insulation cylinder 610 and contacts with the heating mechanism 320, the other part of the airflow enters the rear part of the heat insulation plate 620 and contacts with the fan circuit board 400, the airflow exchanges heat with the fan circuit board 400, the heat of the fan circuit board 400 can be absorbed, the fan circuit board 400 is cooled, and the service life of the fan circuit board 400 can be prolonged. The air flow after heat exchange with the fan circuit board 400 can enter the heat insulation bin through the gap between the heat insulation plate 620 and the circumferential side wall of the heat insulation cylinder 610, then carries out secondary heat exchange with the heating mechanism 320 in the heat insulation bin, and finally blows out from the air outlet 110.
The body comprises a header 100 and a handle 200 which are communicated with each other, the first cavity 510 and the second cavity 520 are positioned in the header 100, and the air inlet channel 210 is positioned in the handle 200; the air inlet is located on the handle 200.
The air inlet of the hair dryer in the embodiment is arranged on the handle 200, but not arranged on the rear side of the head part 100, so that when the hair dryer is used, the air inlet on the handle 200 is far away from the hair of a user, and the hair dryer is not easy to be involved.
The fan circuit board 400 is parallel to the length direction of the air inlet channel 210. The blocking of the fan circuit board 400 to the air flow is reduced, so that the air flow entering the second cavity 520 can flow through the fan circuit board 400 more smoothly and then flow out of the second cavity 520. The wind resistance is smaller in the flowing process of the airflow, and the generated noise is smaller.
The inner wall of the header 100 may have a circular arc shape. The header 100 has no edges and corners inside, so that the airflow is smoother when flowing inside the header 100, especially when flowing inside the second cavity 520, and noise generated by the airflow is reduced.
The air inlet may be located on a circumferential side wall of the lower end of the handle 200. The air inlet is located at the bottom of the handle 200 to avoid interfering with the user's grip of the handle 200.
The inner side of the air inlet can be provided with a filter screen.
A filter screen may be disposed inside the handle 200 and aligned with the air inlet, the filter screen being configured to prevent impurities from entering the second air duct from the air inlet. The filter screen can be in a ring shape, and small holes with the diameter of 0.2-0.3mm are uniformly distributed on the upper periphery of the filter screen; the small holes can prevent fine objects such as hair from entering while the airflow flows into the second channel, so that the safe operation of the fan 310 is protected.
A vibration damping structure is arranged between the fan 310 and the air inlet channel 210.
The damping structure can be for cup jointing the flexible glue cover between fan 310 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 310 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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022215460.XU CN213908942U (en) | 2020-09-29 | 2020-09-29 | Electric hair drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022215460.XU CN213908942U (en) | 2020-09-29 | 2020-09-29 | Electric hair drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213908942U true CN213908942U (en) | 2021-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022215460.XU Active CN213908942U (en) | 2020-09-29 | 2020-09-29 | Electric hair drier |
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| Country | Link |
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| CN (1) | CN213908942U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116350000A (en) * | 2023-04-07 | 2023-06-30 | 松下万宝美健生活电器(广州)有限公司 | Hair dryer with loop cooling air duct |
-
2020
- 2020-09-29 CN CN202022215460.XU patent/CN213908942U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116350000A (en) * | 2023-04-07 | 2023-06-30 | 松下万宝美健生活电器(广州)有限公司 | Hair dryer with loop cooling air duct |
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