Handheld hairdryer

Abstract

Disclosed is a handheld hairdryer, comprising a housing, a fan assembly, a ceramic heating body, and a battery. The housing is provided with an air inlet, an air outlet, and an air supply duct located between the air inlet and the air outlet. The fan assembly is provided in the air supply duct, and the fan assembly is used for driving air to enter the air supply duct from the air inlet and then flow out of the air outlet. The ceramic heating element is arranged in the air supply duct, and the ceramic heating element is used for heating air flowing through the air supply duct. The battery is at least partially located in the air supply duct. The fan assembly and the ceramic heating element are both electrically connected to the battery, thus the fan assembly and the ceramic heating element are powered by means of the battery. The technical solution of the present invention can increase usage scenarios and is convenient for a user to use.

Description

Handheld electric hair dryer TECHNICAL FIELD

[0001] The present application relates to the field of hair drying devices, in particular to a handheld electric hair dryer. BACKGROUND

[0002] At present, the handheld electric hair dryer has become a common household appliance in people's daily life, which is usually used for drying or styling hair, and of course, it can also be used for drying clothes or pet hair. The traditional handheld electric hair dryer generally uses power line to connect to the mains for use because it uses electric heating wire as a large energy consumption heating device. However, this can only be used near the power source, and the use scene is limited, which is not convenient for users to use. SUMMARY

[0003] The main purpose of the present application is to provide a handheld electric hair dryer, which aims to increase the use scene and facilitate the use of users.

[0004] To achieve the above purpose, the handheld electric hair dryer provided by the present application comprises:

[0005] A shell is provided with an air inlet, an air outlet and an air supply air duct between the air inlet and the air outlet;

[0006] A fan assembly is arranged in the air supply air duct, and the fan assembly is used to drive air to flow out from the air outlet after entering the air supply air duct from the air inlet;

[0007] A ceramic heating body is arranged in the air supply air duct, and the ceramic heating body is used to heat the air flowing through the air supply air duct; and

[0008] A battery is at least partially located in the air supply air duct, and the fan assembly and the ceramic heating body are electrically connected with the battery to supply power to the fan assembly and the ceramic heating body through the battery.

[0009] Optionally, the handheld electric hair dryer comprises a main control board and a charging member, the main control board is provided with a charging circuit, the charging member is arranged in the shell, and the battery and the charging member are electrically connected with the charging circuit.

[0010] Optionally, the charging member is an interface female seat, the shell is provided with a mounting hole, and the interface female seat is arranged in the mounting hole; or the charging member is a wireless charging coil, and the wireless charging coil is arranged in the shell.

[0011] Optionally, the main control board is arranged on one side of the battery and located in the air supply air duct.

[0012] Optionally, the shell has a holding portion and an air outlet portion at one end of the holding portion, the handheld electric hair dryer further comprises a filter screen assembly, the air outlet is arranged at the air outlet portion, the air inlet is arranged at one end of the holding portion away from the air outlet portion, the filter screen assembly covers the air inlet, and the battery portion is located in the filter screen assembly.

[0013] Optionally, the ceramic heating body is annular, has two wire connection portions and two heating portions connected between the two wire connection portions, and the two heating portions are symmetrically arranged about the line connecting the two wire connection portions.

[0014] Optionally, the heating portion is arranged in a plurality of segments in the circumferential direction of the ceramic heating body, so as to form a plurality of ventilation grooves on the inner side and the outer side of the heating portion, and the ventilation grooves are arranged in a through manner at two ends in the axial direction of the ceramic heating body.

[0015] Optionally, the handheld electric hair dryer further comprises a first supporting plate and a second supporting plate, the first supporting plate is provided with two first clamping grooves and a slot between the two first clamping grooves, the second supporting plate is provided with two second clamping grooves and a plug-in portion between the two second clamping grooves, the plug-in portion is plugged into the slot, one of the heating portions is clamped into one of the first clamping grooves and one of the second clamping grooves, and the other heating portion is clamped into the other first clamping groove and the other second clamping groove.

[0016] Optionally, the air supply air duct comprises a first air duct extending in the up-down direction and a second air duct extending in the front-rear direction, the second air duct is connected between the first air duct and the air outlet, the second air duct is arranged in an arc shape and gradually bends from the first air duct towards the air outlet, so as to communicate the first air duct and the air outlet.

[0017] Optionally, the shell comprises an outer shell and an air guide shell, the outer shell comprises a holding portion extending in the up-down direction and an air outlet portion at one end of the holding portion and extending in the front-rear direction, the air outlet is arranged at one end of the air outlet portion, the first air duct is arranged in the holding portion, and the second air duct is arranged in the air guide shell.

[0018] Optionally, the second air duct has an inlet and an outlet, and the outlet is arranged to be offset in the left-right direction compared with the inlet.

[0019] The beneficial effects of the technical scheme of the present application are as follows: by arranging a battery in the handheld electric hair dryer, and using the battery to supply power, the handheld electric hair dryer can be used without being connected to a power source at all times, reducing the constraint of the power cord, and facilitating the use of the handheld electric hair dryer in outdoor and power failure scenarios, thereby increasing the use scenarios of the handheld electric hair dryer. Moreover, compared with an electric heating wire, the ceramic heating body has high heating efficiency and low energy consumption, and when the battery is used to supply power, the handheld electric hair dryer has a long battery life, which is convenient for users. Moreover, the battery is arranged at least partially in the air supply air duct, so that air flows through the battery during use, thereby removing the heat generated by the battery through the air flow, avoiding the arrangement of a separate heat dissipation structure, simplifying the structure of the handheld electric hair dryer, and thereby avoiding the oversize of the handheld electric hair dryer, and facilitating the holding and use of the handheld electric hair dryer by users. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.

[0021] Fig. 1 is a structural schematic view of an embodiment of the handheld electric hair dryer of the present application;

[0022] Fig. 2 is an exploded view of the handheld electric hair dryer in Fig. 1;

[0023] Fig. 3 is a front view of the handheld electric hair dryer in Fig. 1;

[0024] Fig. 4 is a sectional view at X-X in Fig. 3;

[0025] Fig. 5 is a structural schematic view of the ceramic heating body and the first and second supporting plates in Fig. 3;

[0026] Fig. 6 is an exploded view of the ceramic heating body and the first and second supporting plates in Fig. 5;

[0027] Fig. 7 is a top view of the ceramic heating body and the heat insulation cylinder in Fig. 2;

[0028] Fig. 8 is a structural schematic view of the air guide shell in Fig. 2;

[0029] Fig. 9 is a front view of the air guide shell in Fig. 8.

[0030] Explanation of reference numerals:

[0031] 10, shell; 101, air inlet; 102, air outlet; 103, air supply duct; 104, first air duct; 105, second air duct; 11, outer shell; 111, holding part; 112, air outlet part; 113, front shell; 114, rear shell; 12, air guide shell; 121, inlet; 122, outlet; 13, mounting cavity; 20, ceramic heating element; 21, wiring part; 22, heating part; 23, ventilation slot; 24, ventilation gap; 30, battery; 40, fan assembly; 51, conductive part; 52, first support plate; 521, first clamping groove; 522, insertion slot; 53, second support plate; 531, second clamping groove; 532, insertion part; 54, heat insulation cylinder; 61, main control board; 70, filter screen assembly.

[0032] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0034] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0035] In addition, if the embodiments of the present application involve descriptions of “first”, “second” and the like, the descriptions of “first”, “second” and the like are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, the meaning of “and / or” appearing throughout the text is that it includes three parallel solutions, and “A and / or B” includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of a person skilled in the art, and when the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0036] The present application provides a handheld electric hair dryer.

[0037] In the embodiment of the present application, as shown in FIGS. 1-9, the handheld electric hair dryer comprises a housing 10, a fan assembly 40, a ceramic heating element 20, and a battery 30. The housing 10 is provided with an air inlet 101, an air outlet 102, and an air supply duct 103 between the air inlet 101 and the air outlet 102. The fan assembly 40 is arranged in the air supply duct 103 and is used to drive air to flow from the air inlet 101 into the air supply duct 103 and then out of the air outlet 102.

[0038] The ceramic heating element 20 is arranged in the air supply duct 103 and is used to heat the air flowing through the air supply duct 103. Specifically, the ceramic heating element 20 is a heating structure as a whole, that is, the ceramic heating element 20 has at least two spaced apart wiring portions 21. The wiring portions 21 are connected to an electric control device. One of the wiring portions 21 is connected to the positive electrode of a power supply, and the other wiring portion 21 is connected to the negative electrode of the power supply. After the power supply is turned on, electric current flows through the ceramic heating element 20, thereby converting electric energy into heat energy and transferring the heat energy to the surface of the ceramic heating element 20. When air flows through the ceramic heating element 20, the air exchanges heat with the ceramic heating element 20, thereby heating the air flowing through the ceramic heating element 20. Compared with an electric heating wire, the ceramic heating element 20 has high heating efficiency, can have a smaller size, thereby reducing the occupied space of the ceramic heating element 20 in the handheld electric hair dryer, and will not be fused even after long time use, thereby having a longer service life.

[0039] The battery 30 is arranged in the housing 10, and the fan assembly 40 and the ceramic heating element 20 are electrically connected to the battery 30. The battery 30 supplies power to the fan assembly 40 and the ceramic heating element 20. Specifically, the handheld electric hair dryer further comprises an electric control device arranged in the housing 10. The electric control device is the circuit part of the handheld electric hair dryer and is used for operation and function control of the handheld electric hair dryer. The specific structure of the electric control device is not described herein. That is, in use, the electric control device is powered by the battery 30, thereby allowing the handheld electric hair dryer to be used without being plugged in at all times, and facilitating the user to use the handheld electric hair dryer while moving.

[0040] Optionally, the battery 30 is at least partially arranged in the air supply duct 103, that is, in use, the air can pass through the battery 30, thereby allowing the air to carry away the heat generated by the battery 30, avoiding the need to additionally arrange a heat dissipation structure, and simplifying the structure of the handheld electric hair dryer. Optionally, a main control board 61 is arranged on one side of the battery 30 and in the air supply duct 103. Similarly, in use, the air can pass through the main control board 61, thereby allowing the air to carry away the heat generated by the electronic devices on the main control board 61.

[0041] The technical scheme of the present application sets the battery 30 in the handheld electric hair dryer, and uses the battery 30 to supply power, so that the handheld electric hair dryer does not need to be plugged in at all times, reduces the constraint of the power cord, can be used by the user outdoors and in a power failure scene, and increases the use scene of the handheld electric hair dryer. Moreover, compared with the electric heating wire, when the ceramic heating body 20 is used for heating, the ceramic heating body 20 has high heating efficiency and low energy consumption, and when the battery 30 is used for power supply, the handheld electric hair dryer has long endurance time, which is convenient for the user to use.

[0042] In some embodiments, the electric control device includes a main control board 61 and a charging member, the main control board 61 is provided with a charging circuit, and the charging member is arranged in the shell 10. The battery 30 and the charging member are electrically connected with the charging circuit. That is, the battery 30 is a rechargeable battery (such as a lithium ion battery), and after the battery 30 is used up, the battery 30 can be charged by connecting a charger through the charging member without disassembling the battery 30. In this way, the battery 30 can be integrated and fixed in the handheld electric hair dryer, which is beneficial to simplify the structure of the handheld electric hair dryer and improve the structural compactness. Of course, in other embodiments, the battery 30 is detachably connected with the shell 10.

[0043] The charging member has various forms, for example, in some embodiments, the charging member is an interface female seat (such as a Type-C female seat), and the shell 10 is provided with a mounting hole, and the interface female seat is arranged in the mounting hole. In this way, the structure is simple and the cost is low. In other embodiments, the charging member is a wireless charging coil, and the wireless charging coil is arranged in the shell 10. In this way, the opening can be avoided on the shell 10, and the waterproof performance can be improved.

[0044] In some embodiments, the shell 10 has a holding portion 111 and an air outlet portion 112 located at one end of the holding portion 111, the handheld electric hair dryer includes a filter screen assembly 70, the air outlet 102 is arranged in the air outlet portion 112, the air inlet 101 is arranged at the end of the holding portion 111 away from the air outlet portion 112, the filter screen assembly 70 covers the air inlet 101, and the battery 30 is partially located in the filter screen assembly 70. Specifically, the filter screen assembly 70 has an annular peripheral wall and a bottom wall sealed at one end of the annular peripheral wall, the other end of the annular peripheral wall covers the air inlet 101, and the annular peripheral wall has a plurality of ventilation holes. That is, the battery 30 is partially inserted into the inside of the annular peripheral wall, and the battery 30 is spaced from the annular peripheral wall. In this way, the space inside the filter screen assembly 70 can be used to accommodate the battery 30, and the space utilization rate in the holding portion 111 can be improved.

[0045] In some embodiments, the ceramic heating body 20 is annular, and has two wire connection portions 21 and two heating portions 22 connected between the two wire connection portions 21, the two heating portions 22 are symmetrically arranged about the line connecting the two wire connection portions 21. That is, after the power is turned on, the current flows through the two heating portions 22, thereby converting the electric energy into heat energy, when the airflow flows through the surface of the heating portion 22, the airflow can exchange heat with the heating portion 22, thereby the airflow flowing through the ceramic heating body 20 can be heated. By symmetrically arranging the two heating portions 22 about the line connecting the two wire connection portions 21, the length and cross section of the two heating portions 22 can be substantially the same, when the current is passed, the two heating portions 22 can be uniformly heated, the airflow in the air outlet duct can be uniformly heated, and the heat exchange effect can be improved.

[0046] Optionally, the heating portion 22 is arranged in multiple segments in the circumferential direction of the ceramic heating body 20, to form multiple ventilation grooves 23 on the inner side and the outer side of the heating portion 22, the ventilation grooves 23 are arranged through both ends in the axial direction of the ceramic heating body 20. In this way, the surface area of the heating portion 22 can be increased, thereby improving the heat exchange efficiency. In other embodiments, the heating portion 22 is provided with multiple through holes, each of which is arranged through both ends in the axial direction of the ceramic heating body 20.

[0047] Of course, in other embodiments, the ceramic heating body 20 includes an inner ring portion, an outer ring portion arranged outside the inner ring portion, and multiple connection portions connected between the inner ring portion and the outer ring portion, the multiple connection portions are distributed at intervals in the circumferential direction of the inner ring portion, and the heat exchange holes are formed between any two adjacent connection portions. In this way, the surface area of the ceramic heating body 20 is large, and the heat exchange efficiency can be improved.

[0048] Optionally, the ceramic heating body 20 is a silicon carbide ceramic heating body. Specifically, the silicon carbide ceramic heating body is made of silicon carbide ceramic material, by using the silicon carbide ceramic heating body as the ceramic heating body 20, the heating efficiency and the heating speed of the ceramic heating body 20 can be improved. The silicon carbide ceramic heating body can be made by mixing silicon carbide powder as the main sintering phase raw material with one or more of titanium nitride powder, zirconium nitride powder, titanium carbonitride powder, titanium carbide powder, zirconium carbide powder, thallium carbide powder, hafnium carbide powder, titanium boride powder, zirconium boride powder, molybdenum silicide powder, and tungsten carbide powder as the conductive phase raw material, then forming according to the designed shape, sintering to obtain. For example, the silicon carbide powder, yttrium oxide powder, aluminum oxide powder, and titanium boride powder can be uniformly mixed according to a certain mass ratio, then water is added as a solvent, uniformly mixed by using a ball mill, then spray dried, the dried powder and paraffin are mixed and heated according to a certain mass ratio, poured into a hot-pressing casting machine, and the hot-pressing casting is completed. After the blank is dried, it is put into a sintering furnace for sintering, and a silicon carbide ceramic heating body is obtained. Of course, in other embodiments, zirconium oxide, aluminum oxide, yttrium oxide, silicon oxide, or silicon nitride can also be used as the main sintering phase raw material.

[0049] In some embodiments, the handheld electric hair dryer further comprises two conductive pieces 51, each of which is clamped to one of the wiring portions 21 to be electrically connected with the wiring portion 21, i.e., the conductive pieces 51 are formed separately from the ceramic heating body 20. In this way, the structure of the ceramic heating body 20 can be simplified, and the molding of the ceramic heating body 20 is facilitated, thereby reducing the production difficulty and cost. The conductive pieces 51 can be clamped to the wiring portions 21 by buckles or screws, or the conductive pieces 51 can be welded to the wiring portions 21 to ensure reliable wiring.

[0050] In some embodiments, the handheld electric hair dryer further comprises a first supporting plate 52 and a second supporting plate 53. The first supporting plate 52 is provided with two first clamping grooves 521 and a slot 522 located between the two first clamping grooves 521. The second supporting plate 53 is provided with two second clamping grooves 531 and a plug-in portion 532 located between the two second clamping grooves 531. The plug-in portion 532 is plugged into the slot 522. One of the heating portions 22 is clamped into one of the first clamping grooves 521 and one of the second clamping grooves 531, and the other heating portion 22 is clamped into the other first clamping groove 521 and the other second clamping groove 531. Specifically, when the plug-in portion 532 is plugged into the slot 522, the two first clamping grooves 521 and the two second clamping grooves 531 are alternately distributed along the circumference of the ceramic heating body 20, and are clamped to the corresponding heating portions 22. The first supporting plate 52 and the second supporting plate 53 are arranged at a certain angle to form a ventilation gap 24 therebetween. In this way, the annular heating body can be effectively fixed, and the contact area between the first supporting plate 52, the second supporting plate 53 and the ceramic heating body 20 can be reduced, so that the ceramic heating body 20 can be fully exposed to the air supply air duct 103, ensuring that the heat exchange area of the ceramic heating body 20 is large and the heat exchange effect is improved. Of course, in other embodiments, the inner wall of the air supply air duct 103 can be provided with clamping grooves / clamping protrusions, and the ceramic heating body 20 can be clamped therein.

[0051] In some embodiments, the first supporting plate 52 and the second supporting plate 53 are arranged at the ventilation grooves 23 outside the heating portions 22. Specifically, the ventilation grooves 23 outside the heating portions 22 have a large space with the shell 10. By arranging the first supporting plate 52 and the second supporting plate 53 at the ventilation grooves 23 outside the heating portions 22, the size of the part between the side surface of the first supporting plate 52 and the first clamping groove 521 can be large, ensuring that the structure strength of the first clamping groove 521 is high (the same for the second clamping groove 531 of the second supporting plate 53), thereby reducing the risk of fracture of the first clamping groove 521 of the first supporting plate 52 (the second clamping groove 531 of the second supporting plate 53), and ensuring reliable installation of the ceramic heating body 20.

[0052] In some embodiments, the first supporting plate 52 and the second supporting plate 53 are both protruded relative to the outer circumferential surface of the ceramic heating element 20; thus, when the protruded part of the first supporting plate 52 relative to the outer circumferential surface of the ceramic heating element 20 is mounted on the housing 10 or other components, the outer circumferential surface of the ceramic heating element 20 can form a gap for the airflow to pass through, so that the surface of the ceramic heating element 20 can be fully utilized for heat exchange with the airflow, and the heat exchange efficiency can be improved.

[0053] In some embodiments, the handheld electric hair dryer further comprises a heat insulation cylinder 54, which is sleeved on the ceramic heating element 20, and the first supporting plate 52 and the second supporting plate 53 are both in abutment with the inner wall of the heat insulation cylinder 54; thus, the outer circumferential surface of the ceramic heating element 20 can be spaced apart from the inner wall of the heat insulation cylinder 54 to form the ventilation gap 24, and since the heat insulation cylinder 54 can play a heat insulation role, the heat dissipation can be reduced, so that the heat can be concentrated in the ventilation gap 24, and when the airflow passes through, the heat exchange can be fully performed, and the airflow heating effect can be improved.

[0054] In some embodiments, the air supply air duct 103 comprises a first air duct 104 extending in the up-down direction and a second air duct 105 extending in the front-back direction, the second air duct 105 is connected between the first air duct 104 and the air outlet 102, the second air duct 105 is arranged in an arc shape and gradually bends from the first air duct 104 to the air outlet 102 to communicate the first air duct 104 and the air outlet 102.

[0055] Specifically, the housing 10 comprises a housing 11 and an air guide shell 12, the housing 11 comprises a holding part 111 extending in the up-down direction and an air outlet part 112 arranged at one end of the holding part 111 and extending in the front-back direction, the air outlet 102 is arranged at one end of the air outlet part 112, the first air duct 104 is arranged in the holding part 111, and the second air duct 105 is arranged in the air guide shell 12, the second air duct 105 is arranged in an arc shape and gradually bends from the first air duct 104 to the air outlet 102 to communicate the first air duct 104 and the air outlet 102. That is, the air outlet 102 is spaced apart from the first air duct 104 in the front-back direction, and the second air duct 105 gradually bends from the first air duct 104 to the air outlet 102 in the front direction. Thus, when the airflow flows from the first air duct 104 to the second air duct 105, the arc-shaped wall surface of the second air duct 105 can be used to gradually guide the airflow to the air outlet 102, avoiding the airflow vertically impacting on the inner wall surface of the second air duct 105 to cause airflow turbulence, so that the wind speed decay can be reduced and the air outlet effect can be improved. At the same time, since the ceramic heating element 20 has high heating efficiency, the size of the ceramic heating element 20 can be small, so that the ceramic heating element 20 can be mounted by using the first air duct 104, and the airflow can flow through the ceramic heating element 20 before flowing to the second air duct 105, avoiding the airflow being hindered by the ceramic heating element 20 in the process of changing the flow direction, so that the flow speed decay amplitude of the airflow in the process of changing the flow direction can be reduced, and the air outlet effect can be improved.

[0056] Optionally, the ceramic heating body 20 is arranged at the connection between the first air duct 104 and the second air duct 105; in this way, the ceramic heating body 20 can be close to the air outlet 102, the flow path of the hot air flow from the ceramic heating body 20 to the air outlet 102 can be shortened, so that the heat loss can be reduced, and the hot air flow can be prevented from flowing through the fan assembly 40 to avoid overheating of the fan assembly 40.

[0057] In some embodiments, the second air duct 105 has a flow inlet 121 and a flow outlet 122, and the flow outlet 122 is arranged offset in the left-right direction compared with the flow inlet 121. That is, the second air duct 105 is curved and extends from the first air duct 104 to the air outlet 102 in the front-rear direction, and is curved and extends to the air outlet 102 in the left-right direction, the flow inlet 121 corresponds to the first air duct 104, and the flow outlet 122 corresponds to the air outlet 102. In this way, the air flow in the second air duct 105 can be guided to spiral flow to the air outlet 102, further reducing the situation that the air flow hits the inner wall of the first air duct 104, and improving the air flow guiding effect.

[0058] In some embodiments, the air guide shell 12 is arranged in an overall arc shape, and a mounting cavity 13 is formed between the side of the air guide shell 12 away from the air outlet 102 and the outer shell 11. That is, the shape of the air guide shell 12 is substantially the same as the shape of the first air duct 104, so that the structure and size of the air guide shell 12 can be simplified, so that the occupied space of the air guide shell 12 in the outer shell 11 can be reduced, and other components can be installed in the mounting cavity 13 formed between the air guide shell 12 and the outer shell 11, so that the structural compactness is improved. In some embodiments, the battery 30 can also be arranged in the mounting cavity 13.

[0059] Optionally, the air outlet part 112 is mainly composed of a front shell 113 and a rear shell 114, the holding part 111 is in a cylindrical shape and connects the front shell 113 and the rear shell 114, that is, the front shell 113 and the rear shell 114 are distributed in front and back, during installation, the air guide shell 12 is first installed on the front shell 113 or the rear shell 114, then the front shell 113 and the rear shell 114 are connected and fixed, and finally the holding part 111 is assembled and fixed with the front shell 113 and the rear shell 114. In this way, the assembly is convenient, and the structure of the front shell 113 and the rear shell 114 is simple and easy to form. In other embodiments, the air outlet part 112 is mainly composed of a left shell and a right shell.

[0060] In some embodiments, the handheld electric hair dryer further comprises an auxiliary heating body, the auxiliary heating body is made of a heating ceramic as a whole, and the auxiliary heating body is arranged in the second air duct 105 and close to the air outlet 102 or close to the second air duct 105. In this way, the air can be heated again by the auxiliary heating body, and the air flow heating speed can be improved. Arranging the auxiliary heating body close to the air outlet 102 or close to the second air duct 105 can reduce the influence of the auxiliary heating body on the air flow. The material and shape of the auxiliary heating body can be consistent with those of the ceramic heating body 20.

[0061] The above description is only preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields within the inventive concept of the present application is included in the patent protection scope of the present application.

Claims

1. A hand-held electric hair dryer, characterized in that, The hand-held electric hair dryer comprises a casing, a fan assembly, a ceramic heating body, and a battery. The casing is provided with an air inlet, an air outlet, and an air supply air duct between the air inlet and the air outlet. The fan assembly is arranged in the air supply air duct and used to drive air to flow from the air inlet into the air supply air duct and then out of the air outlet. The ceramic heating body is arranged in the air supply air duct and used to heat air flowing through the air supply air duct. The battery is at least partially arranged in the air supply air duct, and the fan assembly and the ceramic heating body are electrically connected to the battery to be powered by the battery. The hand-held electric hair dryer comprises a main control board and a charging member, the main control board is provided with a charging circuit, and the charging member is arranged in the casing.

2. The hand-held electric hair dryer of claim 1 wherein, The battery and the charging member are electrically connected to the charging circuit.

3. The hand-held electric hair dryer of claim 2 wherein, The charging member is an interface female seat, the casing is provided with a mounting hole, and the interface female seat is arranged in the mounting hole.

4. The hand-held electric hair dryer of claim 2 wherein, Alternatively, the charging member is a wireless charging coil arranged in the casing.

5. The hand-held electric hair dryer of claim 1 wherein, The main control board is arranged on one side of the battery and located in the air supply air duct.

6. The hand-held electric hair dryer of claim 1 wherein, The casing has a holding portion and an air outlet portion at one end of the holding portion.

7. The hand-held electric hair dryer of claim 6 wherein, The hand-held electric hair dryer further comprises a filter screen assembly, the air outlet is arranged at the air outlet portion, the air inlet is arranged at the end of the holding portion away from the air outlet portion, the filter screen assembly covers the air inlet, and the battery is partially arranged in the filter screen assembly.

8. The hand-held electric hair dryer of claim 6 wherein, The ceramic heating body is annular and has two wiring portions and two heating portions connected between the two wiring portions.

9. The hand-held electric hair dryer of claim 1 wherein, The two heating portions are symmetrically arranged about the line connecting the two wiring portions.

10. The hand-held electric hair dryer of claim 9 wherein, The heating portions are arranged in multiple segments in the circumferential direction of the ceramic heating body to form multiple ventilation grooves on the inner side and the outer side of the heating portions. The ventilation grooves are arranged through both ends in the axial direction of the ceramic heating body. The hand-held electric hair dryer further comprises a first supporting plate and a second supporting plate. The first supporting plate is provided with two first clamping grooves and a slot between the two first clamping grooves. The second supporting plate is provided with two second clamping grooves and a plug-in portion between the two second clamping grooves. One of the heating portions is clamped into one of the first clamping grooves and one of the second clamping grooves, and the other heating portion is clamped into the other first clamping groove and the other second clamping groove. The air supply air duct comprises a first air duct extending in the up-down direction and a second air duct extending in the front-back direction. The second air duct is connected between the first air duct and the air outlet. The second air duct is arranged in an arc shape and gradually bends from the first air duct towards the air outlet to connect the first air duct and the air outlet. The casing comprises an outer shell and a wind guide shell. The outer shell comprises a holding portion extending in the up-down direction and an air outlet portion at one end of the holding portion extending in the front-back direction. The air outlet is arranged at one end of the air outlet portion. The first air duct is arranged in the holding portion, and the second air duct is arranged in the wind guide shell. The second air duct has an inflow port and an outflow port, and the outflow port is arranged offset in the left-right direction compared to the inflow port.

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