Hair dryer

Abstract

The blower can reduce heat transfer between the air duct where the annular air duct heater is located and the water ion generator, and is smaller in size. The hair dryer comprises a main body part, a handle, an air duct, a fan, an annular air duct heater and a water ion generator. Wherein an air outlet is formed in the front end of the main body part, the handle is connected with the main body part, the handle or the main body part is provided with an air inlet, the air channel is communicated with the air inlet and the air outlet, the air channel comprises a main body part air channel located in the main body part, and the main body part air channel at least comprises an annular air channel and a central air channel located in the center of the annular air channel; the fan is arranged in the air duct and drives air to enter from the air inlet and to be blown out forwards from the air outlet through the air duct, the annular air duct heater is matched with the annular air duct in shape and is arranged in the annular air duct, and the water ion generator is arranged in the central air duct and is separated from the inner wall of the annular air duct.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliances, in particular to a hair dryer. Background Art

[0002] As a daily household appliance, hair dryers are mainly used for drying and styling hair and are widely used by people in daily life. With the development of relevant technologies and the improvement of people's requirements for the quality of life, people's requirements for the use experience of hair dryers have also increased. The common hair dryers on the market mainly rely on wind power and high temperature to dry hair. Although they can dry hair quickly, high temperature and strong wind power will make the hair dry and frizzy after drying. Long-term use will also damage the hair and is not conducive to styling the hair.

[0003] In the prior art, in order to improve the user's hair-blowing experience, an ion hair dryer has been proposed, in which a water ion generator is integrated in the air duct of the hair dryer, so that the airflow blown out by the hair dryer during operation carries negatively charged ion particles generated by the water ion generator, which neutralize the positive charge commonly found in the hair, thereby smoothing out the messy hair and making it smooth and pliable, and can also eliminate static electricity, making the hair smoother and easier to comb, and achieving a more ideal styling effect.

[0004] However, due to the addition of the water ion generator, the volume of the hair dryer is further increased, which is not conducive to the miniaturization of the hair dryer device, and the user experience is not good. In addition, the ion particles of the water ion generator will have a risk of failure in a high temperature environment. Therefore, the existing ion hair dryers generally set a heat insulation rib between the water ion generator and the air duct where the heater is located. However, the water ion generator and the heater are actually adjacent. During the use of the hair dryer, the heat in the air duct where the heater is located will still be transferred to the water ion generator, affecting the effect of the water ions generated by the water ion generator. Utility Model Content

[0005] In view of the above problems, the utility model provides a hair dryer which can ensure the ion effect of blowing out and has a smaller size.

[0006] The utility model provides a hair dryer, which comprises: a main body, a handle, an air duct, a blower, an annular air duct heater and a water ion generator. The front end of the main body is provided with an air outlet, the handle is connected to the main body, the handle or the main body has an air inlet, the air duct connects the air inlet and the air outlet, the air duct comprises a main body air duct located inside the main body, the main body air duct at least comprises an annular air duct formed by an annular air duct inner wall and an annular air duct outer wall and a central air duct surrounded by the annular air duct inner wall, the central air duct is located at the center of the annular air duct, the blower is arranged in the air duct, drives air to enter from the air inlet, and blows out from the air outlet forward through the air duct, the annular air duct heater matches the shape of the annular air duct and is arranged in the annular air duct, the water ion generator is arranged in the central air duct and is separated from the inner wall of the annular air duct.

[0007] According to the technical solution of the utility model, driven by the fan, air enters the hair dryer from the air inlet of the handle or the main body, and the normal temperature air entering the hair dryer enters the annular air duct and the central air duct respectively. The normal temperature air entering the annular air duct is blown out from the air outlet after fully contacting the annular air duct heater in the annular air duct; the normal temperature air entering the central air duct passes through the water ion generator and is blown out from the air outlet carrying water ion particles.

[0008] First, the annular air duct heater and the water ion generator are respectively arranged in two air ducts, so that the annular air duct heater and the water ion generator are separated, and further, the water ion generator is separated from the inner wall of the annular air duct, that is, the water ion generator and the inner wall of the annular air duct are arranged in a manner of being spaced a certain distance apart, and any heat insulating medium (air, foam, water, etc.) can be filled in the interval here, which is not limited here. By arranging the annular air duct where the annular air duct heater is located and the water ion generator in a manner of being separated from each other, the heat transfer between the annular air duct where the annular air duct heater is located and the water ion generator can be further reduced.

[0009] Moreover, by arranging the annular air duct heater in the annular air duct, the cross-sectional area of ​​the annular air duct heater in the radial direction of the main body (perpendicular to the front-to-back direction) can be made larger, so that the length of the annular air duct where the annular air duct heater is located in the front-to-back direction can be shortened when the output air temperature remains unchanged. Furthermore, by arranging the water ion generator in the central air duct in the center of the annular air duct, the structure of the hair dryer is more compact, so that the heat transfer between the annular air duct where the annular air duct heater is located and the water ion generator can be reduced while reducing the volume of the hair dryer, which is conducive to the miniaturization of the hair dryer device.

[0010] As a preferred technical solution of the utility model, the hair dryer also includes a component box, the water ion generator is installed inside the component box, the component box is open at both ends in the air flow direction from the air inlet to the air outlet, and the outer wall of the component box is separated from the inner wall of the annular air duct.

[0011] According to the preferred technical solution, on the one hand, the component box can limit the diffusion of ions generated by the water ion generator, and a separate ion air duct (i.e., the central air duct) is formed inside the component box, which can better guide the ions to be blown out from the air outlet at the front end of the hair dryer; on the other hand, the separation of the component box can further reduce the heat transfer between the annular air duct or control circuit elements where the annular air duct heater is located and the water ion generator, thereby improving the water ion effect generated by the water ion generator.

[0012] As a preferred technical solution of the present invention, the hair dryer provided by the present invention further includes a control circuit board, and the control circuit board is arranged at one end of the main body away from the air outlet.

[0013] According to this preferred technical solution, the control circuit board is arranged at an end of the main body away from the air outlet, which can make the internal layout of the hair dryer more compact and is conducive to the miniaturization of the hair dryer.

[0014] As a preferred technical solution of the utility model, the main body air duct also includes a circuit board air duct, and the circuit board air duct includes a circuit board chamber and a heating element chamber arranged in sequence along the air flow direction. The circuit board chamber is located at one end of the main body away from the air outlet, the control circuit board is arranged in the circuit board chamber, at least a part of the heating element fixed on the control circuit board extends into the heating element chamber, and the heating element chamber is located between the annular air duct and the central air duct.

[0015] According to the preferred technical solution, since the control circuit board is relatively flat, the control circuit board of the circuit element is arranged at the end of the main body away from the air outlet, and the larger heating element is further extended into the heating element cavity, making the layout structure of the hair dryer more compact.

[0016] In addition, since the heating element chamber is arranged between the annular air duct and the central air duct, that is, in the interval space between the component box and the inner wall of the annular air duct, the cooling air of the circuit board air duct first passes through the circuit board chamber and then enters the heating element chamber, that is, a cooling air gap can be formed between the central air duct and the annular air duct, and the flowing air can further reduce the continuous heat transfer and accumulation between the annular air duct where the annular air duct heater is located and the component box.

[0017] As a preferred technical solution of the present invention, the board surface of the control circuit board is perpendicular to the front-rear direction of the main body.

[0018] According to the preferred technical solution, the board surface of the control circuit board is perpendicular to the front-to-back direction of the main body, so that the control circuit board can be directly attached to the end of the hair dryer away from the air outlet, making it easier to configure the heating element vertically inserted on the control circuit board in the air duct, thereby optimizing the layout structure of the hair dryer and further reducing the size of the hair dryer.

[0019] As a preferred technical solution of the utility model, the heating element includes a capacitor and a high-voltage generator, which extend into the heating element chamber along the front-to-back direction and are respectively arranged on opposite sides of the component box.

[0020] According to the preferred technical solution, the board surface of the control circuit board is perpendicular to the front-to-back direction of the main body, and the heating element is extended into the heating element chamber along the front-to-back direction, so that the heating element can be arranged in a manner perpendicular to the control circuit board, the connection structure is more stable, and can better cooperate with the air flow direction in the air duct of the main body, thereby reducing wind resistance and improving the cooling efficiency of the heating element.

[0021] As a preferred technical solution of the present utility model, the air inlet is arranged at an end of the handle away from the main body.

[0022] According to the preferred technical solution, the air inlet is arranged on the handle, so that there is no need to let in air from the rear end of the main body, which facilitates the control circuit board to be attached to the rear end of the main body, and the central air duct of the hair dryer directly enters the component box from the air inlet of the handle without directly contacting the circuit elements, which can prevent the heat of the circuit elements from affecting the wind temperature entering the component box, thereby ensuring the ion effect of the water ion generator.

[0023] As a preferred technical solution of the present utility model, in the front-rear direction of the main body, the annular air duct heater is adjacent to the air outlet.

[0024] According to the preferred technical solution, the annular air duct heater is arranged adjacent to the air outlet, which can improve the control of the wind temperature at the air outlet of the hair dryer and prevent the hot air after passing through the annular air duct heater from blowing through the water ion generator and affecting the effect of the blown ions.

[0025] As a preferred technical solution of the present invention, when viewed from a direction perpendicular to the front-rear direction of the main body, the positions of the water ion generator and the annular air duct heater at least partially overlap with each other.

[0026] According to this preferred technical solution, by overlapping the positions of the water ion generator and the annular air duct heater, the internal structural layout of the hair dryer is further optimized and the length of the hair dryer in the front-to-back direction is reduced.

[0027] As a preferred technical solution of the utility model, the output of the fan and the diameter of the annular air duct are configured so that the wind speed of the annular air duct is 5-8m / s.

[0028] According to the preferred technical solution, by limiting the output of the fan and the diameter of the annular air duct, the wind speed in the annular air duct where the annular air duct heater of the hair dryer is located can be stabilized at 5-8m / s, thereby better controlling the wind temperature at the air outlet of the hair dryer and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is an overall appearance diagram of a hair dryer provided by the first embodiment of the utility model.

[0030] Figure 2 It is a cross-sectional view of a hair dryer provided by the first embodiment of the utility model.

[0031] Figure 3 It is a cross-sectional view of a hair dryer provided by the first embodiment of the utility model.

[0032] Figure 4 This is an assembly diagram of a water ion generator for a hair dryer provided in the second embodiment of the utility model.

[0033] Figure 5 This is another assembly diagram of the water ion generator of the hair dryer provided in the second embodiment of the utility model.

[0034] Figure 6 It is a schematic cross-sectional view of the main body of a hair dryer provided in the third embodiment of the present utility model.

[0035] Figure markings: 1-main body; 10-end cover; 11-air outlet; 111-first air outlet; 112-second air outlet; 2-handle; 21-air inlet; 222-air inlet; 3-air duct; 31-main body air duct; 311-annular air duct; 3111-inner wall of the annular air duct; 3112-outer wall of the annular air duct; 312-central air duct; 313-circuit board air duct; 32-handle air duct; 4-annular air duct heater; 5-water ion generator; 51-component mounting bracket; 6-component box; 61-first assembled component; 611-component mounting bracket; 62-second assembled component; 7-control circuit board; 71-capacitor; 72-high voltage generator; 8-circuit board chamber; 9-heating element chamber. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In addition, for any single technical feature described or implied in the embodiments mentioned in this document, or any single technical feature displayed or implied in the accompanying drawings, the present application still allows for continued arbitrary combination or deletion between these technical features (or their equivalents) without any technical obstacles, thereby obtaining more other embodiments of the present application that may not be directly mentioned in this document.

[0038] It should be noted that the terms "front", "rear", "inside", "outside" and the like indicating positional relationships in the description of the present application are based on the directions or positional relationships shown in the drawings. This is only to facilitate those skilled in the art to understand the present application more vividly, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0039] The "front end" refers to the end of the hair dryer that faces the user when in use. Figure 1 The right end of the hair dryer shown in the figure has an air outlet, which is also the air outlet end of the hair dryer; the "rear end" refers to the end of the hair dryer that is away from the user when in use, i.e., the side of the hair dryer that is close to the user. Figure 1 The left end of the hair dryer is shown.

[0040] First embodiment

[0041] Figure 1 This is an overall appearance diagram of a hair dryer provided by the first embodiment of the utility model. Figure 2 FIG. 2 shows a cross-sectional view of a hair dryer provided by the first embodiment of the utility model. Figure 1 and Figure 2 As shown, the hair dryer includes: a main body 1, a handle 2, an air duct 3, a blower (not shown in the figure), an annular air duct heater 4 and a water ion generator 5.

[0042] Among them, Figure 1 As shown, the main body 1 and the handle 2 constitute the external shape of the hair dryer. The main body 1 is a cylindrical shell along the front-to-back direction. The front end of the main body 1 (the end facing the user when in use) is provided with an air outlet 11. The air outlet 11 may have one or more, and the number and arrangement thereof are not limited. Figure 1As shown, the front end of the main body 1 may have an annular end cover 10, and the center of the end cover 10 may correspond to an air duct ( Figure 1 The end cover 10 also has a plurality of through slots evenly distributed thereon, and the plurality of through slots may correspond to another air duct ( Figure 1 (not shown in the figure) as the second air outlet 112.

[0043] The handle 2 is connected to the main body 1, and the connection position and connection method are not limited. In some embodiments, the handle 2 is connected to the side wall of the main body 1 obliquely or vertically, so that the user can easily point the front end of the main body 1 toward the hair by holding the handle 2. In other embodiments, the handle 2 can also be connected to the end of the main body 1 away from the air outlet 11. Among them, the handle 2 or the main body 1 has an air inlet 21. In the case where the air inlet 21 is set on the handle 2, the handle air duct 32 of the handle 2 is directly connected with the main body air duct 31 of the main body 1 through the air inlet 222 at the connection between the handle 2 and the main body 1, so that air can be sucked in by the air inlet 21 of the handle 2 and then blown out by the air outlet 11 of the main body 1. Or, in the case where the air inlet 21 is set at the end of the main body 1 away from the air outlet 11, it can be directly sucked in by the air inlet 21 of the main body 1 and then blown out by the air outlet 11 of the main body 1, and the bending of the air duct 3 is smaller, and the pressure drop is also smaller.

[0044] like Figure 2 As shown, the air duct 3 connects the air inlet 21 and the air outlet 11, and the fan (not shown in the figure) is arranged in the air duct 3, which is used to drive the air to enter from the air inlet 21, and flow into the air outlet 11 through the air duct 3, and then blow out from the air outlet 11 to the front. The air duct 3 can be formed by combining multiple sections of air ducts 3, or can have multiple branch channels, or can also be composed of multiple parallel air ducts 3, all of which belong to the protection scope of the present utility model. In this embodiment, the air duct 3 at least includes a main body air duct 31 located inside the main body 1. Specifically, for the case where the air inlet 21 is arranged on the handle 2, the air duct 3 can be composed of the main body air duct 31 located inside the main body 1 and the handle air duct 32 located inside the handle 2 in series. For the case where the air inlet 21 is arranged on the main body 1, the air duct 3 is composed of the main body air duct 31 located inside the main body 1.

[0045] Among them, Figure 3As shown, the main body air duct 31 includes at least an annular air duct 311 and a central air duct 312. The annular air duct 311 is surrounded by an annular air duct inner wall 3111 and an annular air duct outer wall 3112 to form an annular air duct passage, and the central air duct 312 is surrounded by the annular air duct outer wall 3112 and is located in the center of the annular air duct 311. The central air duct 312 can be directly surrounded by the annular air duct outer wall 3112 to form an air duct passage, or it can be surrounded by other structures to form an air duct passage, and there is no limitation here. The annular air duct heater 4 matches the shape of the annular air duct 311 and is arranged in the annular air duct 311. The water ion generator 5 is arranged in the central air duct 312 and is separated from the annular air duct inner wall 3111. In this embodiment, the central air duct 312 and the annular air duct 311 can be separated from each other, that is, a gap is formed between the inner wall 3111 of the annular air duct and the central air duct 312, and the water ion generator 5 is arranged in the central air duct 312 and naturally has a gap with the inner wall 3111 of the annular air duct. Alternatively, in some embodiments, the central air duct 312 can also be separated from the annular air duct 311 adjacently, and the water ion generator 5 is arranged in the central air duct 312 and does not contact the wall surface of the central air duct 312, so that the water ion generator 5 also has a gap with the inner wall 3111 of the annular air duct. Both of the above methods belong to the protection scope of the present utility model.

[0046] It should be noted that the central air duct 312 mentioned in this embodiment is in the center of the annular air duct 311, and the water ion generator 5 is arranged in the central air duct 312. This content does not explicitly limit the water ion generator 5 to be arranged in the center of the cross section of the annular air duct 311 or the center of the flow direction of the annular air duct 311. As long as the water ion generator 5 is arranged in the central air duct 312, the annular air duct heater 4 is arranged in the annular air duct 311, and there is a gap between the water ion generator 5 and the annular air duct heater 4, it is applicable to the present utility model. For example, the annular air duct heater 4 and the water ion generator 5 can be staggered in the front-to-back direction of the main body 1, so as to further reduce the heat transfer between the annular air duct heater 4 and the water ion generator 5. Preferably, when observed from a direction perpendicular to the front-to-back direction of the main body 1, the projections of the water ion generator 5 and the annular air duct heater 4 at least partially overlap each other, so that the internal structural layout of the hair dryer can be further optimized and the length of the hair dryer in the front-to-back direction can be reduced.

[0047] Under the drive of the fan (not shown in the figure), Figure 2As shown by the arrows in the figure, air enters the hair dryer from the air inlet 21 of the handle 2 or the main body 1, and the normal temperature air entering the hair dryer is divided into two paths and enters the annular air duct 311 and the central air duct 312 respectively. The normal temperature air entering the annular air duct 311 is fully in contact with the annular air duct heater 4 in the annular air duct 311 and is blown out from the air outlet 11; the normal temperature air entering the central air duct 312 passes through the water ion generator 5, and the air carrying water ion particles is blown out from the air outlet 11.

[0048] As a preferred embodiment, the hot air that has fully contacted the annular air duct heater 4 in the annular air duct 311 is blown out from the second air outlet 112, and the air carrying water ion particles is blown out from the first air outlet 111. By blowing the air carrying water ion particles and the heated hot air separately through different air outlets, it is possible to further prevent the water ions from becoming ineffective before contacting the hair.

[0049] In this embodiment, first, the annular air duct heater 4 and the water ion generator 5 are respectively arranged in the annular air duct 311 and the central air duct 312, so that the annular air duct heater 4 and the water ion generator 5 are separated, and further, the water ion generator 5 and the inner wall 3111 of the annular air duct are separated from each other, that is, the water ion generator 5 and the inner wall 3111 of the annular air duct are arranged in a manner of being spaced a certain distance apart, and any heat insulating medium can be filled in the interval here, which is not limited here. By spacing the annular air duct 311 where the annular air duct heater 4 is located and the water ion generator 5, the heat transfer between the annular air duct 311 where the annular air duct heater 4 is located and the water ion generator 5 can be further reduced.

[0050] Furthermore, by arranging the annular air duct heater 4 in the annular air duct 311, the cross-sectional area of ​​the annular air duct heater 4 in the radial direction of the main body 1 can be made larger, so that the length of the annular air duct 311 in the front-to-back direction where the annular air duct heater 4 is located can be shortened when the output air temperature remains unchanged. Furthermore, by arranging the water ion generator 5 in the central air duct 312 located in the center of the annular air duct 311, the structure of the hair dryer is more compact, so that the heat transfer between the annular air duct 311 where the annular air duct heater 4 is located and the water ion generator 5 can be reduced while reducing the volume of the hair dryer, which is conducive to the miniaturization of the hair dryer device.

[0051] Second embodiment

[0052] Figure 4 and Figure 5 1 is an assembly diagram of a water ion generator 5 of a hair dryer provided in the second embodiment of the present invention. Figure 1 , 4-5, the hair dryer may further include a component box 6, and the shape of the component box 6 is not limited. The water ion generator 5 is installed inside the component box 6, and both ends of the component box 6 in the air flow direction from the air inlet 21 to the air outlet 11 are open, and the outer wall of the component box 6 is separated from the inner wall 3111 of the annular air duct. At this time, the air duct enclosed inside the component box 6 is the central air duct 312.

[0053] In this embodiment, on the one hand, the component box 6 can limit the diffusion of ions generated by the water ion generator 5. By using the component box 6 to form a separate central air duct 312, the air can be better guided to directly enter the central air duct 312, and the air carrying ions can be blown out from the air outlet 11 at the front end of the hair dryer; on the other hand, since the outer wall of the component box 6 and the inner wall 3111 of the annular air duct are separated from each other, that is, the central air duct 312 and the annular air duct 311 inside the component box 6 are also separated from each other, the heat transfer between the annular air duct 311 where the annular air duct heater 4 is located and the water ion generator 5 can be further reduced.

[0054] Among them, Figure 4 and Figure 5 As shown, preferably, the component box 6 is composed of two parts, namely a first part 61 and a second part 62, wherein the first part 61 has a component mounting bracket 611 of the water ion generator 5. The component mounting bracket 51 of the water ion generator 5 is arranged at the far end of the water ion generator 5, and the water ion generator 5 can be installed in the component box 6 after the far end component mounting bracket 51 is combined and fixed with the component mounting bracket 611 of the first part 61, and then the second part 62 is assembled with the first part 61 to form a complete component box 6, which is convenient to install.

[0055] Such a structure further reduces the contact area between the water ion generator 5 and the wall of the component box 6 , thereby reducing the heat transfer between the wall of the component box 6 and the water ion generator 5 .

[0056] Preferably, the air inlet 21 is arranged at one end of the handle 2 away from the main body 1. Thus, the blower can be arranged at the handle 2, further reducing the volume of the main body 1 and improving the space utilization inside the hair dryer.

[0057] In the case where the air inlet 21 is arranged at the end of the handle 2 away from the main body 1, it is preferably possible to open an entrance to the component box 6 on the side of the component box 6 close to the handle 2, and the normal temperature air entering through the air inlet 21 on the handle 2 can directly enter the central air duct 312 through the entrance of the component box 6, thereby ensuring that the wind entering the central air duct 312 for carrying ions is at normal temperature.

[0058] Among them, preferably, in the front-to-back direction of the main body 1, the annular air duct heater 4 is adjacent to the air outlet 11. Arranging the annular air duct heater 4 adjacent to the air outlet 11 can improve the control of the wind temperature at the air outlet 11 of the hair dryer, and can avoid the hot air after passing through the annular air duct heater 4 from blowing through the water ion generator 5 and affecting the effect of the blown ions.

[0059] Among them, preferably, the output of the fan and the diameter of the annular air duct 311 are configured to make the wind speed of the annular air duct 311 5-8m / s. By limiting the output of the fan and the diameter of the annular air duct 311, the wind speed of the annular air duct 311 where the annular air duct heater 4 of the hair dryer is located can be stabilized at 5-8m / s, thereby better controlling the wind temperature of the air outlet 11 of the hair dryer and improving the user experience.

[0060] In this embodiment, the component box 6 is used to further separate the water ion generator 5 from the annular air duct 311 where the annular air duct heater 4 is located, and part of the normal temperature air entering through the air inlet 21 is directly introduced into the central air duct 312 in the component box 6, thereby further reducing the heat transfer between the annular air duct 311 where the annular air duct heater 4 is located and the water ion generator 5, and ensuring that the wind entering the central air duct 312 for carrying ions is at normal temperature, so that the wind blown out of the central air duct 312 can carry more effective ions.

[0061] Third embodiment

[0062] The third embodiment of the utility model provides a more specific structure of a hair dryer based on the first embodiment and / or the second embodiment. Compared with the first embodiment and the second embodiment, the third embodiment of the utility model provides a more detailed control circuit board 7 and related structures of a hair dryer.

[0063] Figure 6 FIG. 2 shows a schematic cross-sectional view of a main body 1 of a hair dryer provided by a third embodiment of the present invention. Figure 2 and Figure 6 As shown, the hair dryer also includes a control circuit board 7, which is arranged at the end of the main body 1 away from the air outlet 11. Arranging the control circuit board 7 at the end of the main body 1 away from the air outlet 11 can make the internal layout of the hair dryer more compact, which is conducive to the miniaturization of the hair dryer.

[0064] Among them, the control circuit board 7 generally refers to a structure in which multiple circuit elements are arranged on a circuit substrate, which is generally a plate-shaped structure, but the shape and volume of the control circuit board 7 are different depending on the circuit elements. Therefore, in order to make the internal layout structure of the hair dryer more compact, the main body air duct 31 can also include a circuit board air duct 313, and the circuit board air duct 313 includes a circuit board chamber 8 and a heating element chamber 9 arranged in sequence along the air flow direction. Among them, the circuit board chamber 8 is located at the end of the main body 1 away from the air outlet 11, the control circuit board 7 is arranged in the circuit board chamber 8, and at least a part of the heating elements (capacitor 71, power supply, high voltage generator 72, resistor, etc.) fixed on the control circuit board 7 extend to the heating element chamber 9, and the heating element chamber 9 is located between the inner wall 3111 of the annular air duct and the central air duct 312.

[0065] In this embodiment, since the substrate of the control circuit board 7 is relatively flat, the control circuit board 7 is arranged at the end of the main body 1 away from the air outlet 11, and the larger heating element is further extended into the heating element chamber 9, making the layout structure of the hair dryer more compact.

[0066] In addition, since the heating element chamber 9 is arranged between the inner wall 3111 of the annular air duct and the central air duct 312, that is, in the interval space between the component box 6 and the inner wall 3111 of the annular air duct, the cooling air of the circuit board air duct 313 first passes through the circuit board chamber 8 and then enters the heating element chamber 9, that is, a cooling air gap can be formed between the central air duct 312 and the annular air duct 311, and the continuous heat transfer and accumulation between the annular air duct 311 where the annular duct heater 4 is located and the component box 6 can be further reduced through the flowing air.

[0067] Further preferably, the board surface of the control circuit board 7 is perpendicular to the front-to-back direction of the main body 1. The board surface of the control circuit board 7 is perpendicular to the front-to-back direction of the main body 1. Therefore, the control circuit board 7 can be directly attached to the end of the hair dryer away from the air outlet 11, thereby optimizing the layout structure of the hair dryer and further reducing the size of the hair dryer.

[0068] Preferably, the heating element can be a capacitor 71 and a high-voltage generator 72, which extend into the heating element chamber 9 along the front-to-back direction, and are respectively arranged on opposite sides of the component box 6. The board surface of the control circuit board 7 is perpendicular to the front-to-back direction of the main body 1, and the heating element is extended into the heating element chamber 9 along the front-to-back direction, so that the heating element can be arranged perpendicular to the control circuit board 7, the connection structure is more stable, and can better cooperate with the air flow direction in the air duct 3 of the main body 1, reducing wind resistance while improving the cooling efficiency of the heating element.

[0069] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hair dryer, characterized in that: include: A main body, wherein an air outlet is provided at the front end of the main body; A handle connected to the main body, wherein the handle or the main body has an air inlet; an air duct, connecting the air inlet and the air outlet, the air duct comprising a main body air duct located inside the main body, the main body air duct at least comprising an annular air duct formed by an annular air duct inner wall and an annular air duct outer wall and a central air duct surrounded by the annular air duct inner wall; A fan, arranged in the air duct, drives air to enter from the air inlet, and blows air out from the air outlet through the air duct; an annular air duct heater, matching the shape of the annular air duct and arranged in the annular air duct; The water ion generator is arranged in the central air duct and is separated from the inner wall of the annular air duct.

2. The hair dryer according to claim 1, characterized in that: The hair dryer also includes: A component box, wherein the water ion generator is installed inside the component box, the component box is open at both ends in the airflow direction from the air inlet to the air outlet, and the outer wall of the component box is separated from the inner wall of the annular air duct.

3. The hair dryer according to claim 2, characterized in that: Also includes A control circuit board is arranged at an end of the main body away from the air outlet.

4. The hair dryer according to claim 3, characterized in that: The main body air duct also includes a circuit board air duct, and the circuit board air duct includes a circuit board cavity and a heating element cavity arranged in sequence along the air flow direction. The circuit board chamber is located at one end of the main body away from the air outlet, and the control circuit board is arranged in the circuit board chamber. At least a portion of the heating element fixed on the control circuit board extends into the heating element chamber, and the heating element chamber is located between the inner wall of the annular air duct and the central air duct.

5. The hair dryer according to claim 4, characterized in that: The board surface of the control circuit board is perpendicular to the front-rear direction of the main body.

6. The hair dryer according to claim 5, characterized in that The heating element comprises a capacitor and a high voltage generator, the capacitor and the high voltage generator extend into the heating element chamber along the front-rear direction, and the capacitor and the high voltage generator are respectively arranged on opposite sides of the component box.

7. The hair dryer according to claim 1, characterized in that: The air inlet is arranged at an end of the handle away from the main body.

8. The hair dryer according to claim 1, characterized in that: The annular air duct heater is adjacent to the air outlet in the front-rear direction of the main body.

9. The hair dryer according to claim 1, characterized in that: When viewed from a direction perpendicular to the front-rear direction of the main body, the positions of the water ion generator and the annular air duct heater at least partially overlap with each other.

10. The hair dryer according to claim 1, characterized in that: The output of the fan and the aperture of the annular air duct are configured so that the wind speed of the annular air duct is 5-8 m / s.

Images