Hair dryer

Abstract

The utility model discloses a hair dryer, including shell structure, main control panel, fan subassembly and ceramic heating element, shell structure includes holding part and the air-out part that is equipped with holding part and is equipped with air inlet duct, the air-out part is equipped with vent hole, air outlet duct and air outlet, the ceramic heating element is equipped with the ceramic heating element, the ceramic heating element is equipped with the ceramic heating element. The ventilation hole penetrates through the two ends of the air outlet part in the direction perpendicular to the holding part, the air outlet is located at one end of the air outlet part, and the air outlet channel communicates with the air outlet and the air inlet channel. The main control board is arranged on the shell structure; the fan assembly is arranged in the air inlet duct and is electrically connected with the main control board; the ceramic heating body is arranged in the air outlet duct and surrounds the ventilation hole, and the ceramic heating body is electrically connected with the main control board. According to the technical scheme, the occupied space of the heating body in the hair dryer can be reduced, and meanwhile the air outlet effect is improved.

Description

Technical Field

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

[0002] Hair dryers have become a frequently used personal care product in daily life, primarily used for hair drying and styling. Traditional hair dryers typically utilize a heating wire wrapped around an insulating bracket to generate heat. However, such a heating element is large and occupies a significant amount of space within the hair dryer, hindering miniaturization. Furthermore, reducing the size of the heating element would result in poor heating performance, impacting the user experience. Utility Model Content

[0003] The main purpose of the utility model is to provide a hair dryer, which aims to reduce the space occupied by the heating element in the hair dryer while improving the air outlet effect.

[0004] To achieve the above-mentioned purpose, the hair dryer proposed by the present invention comprises:

[0005] A housing structure comprising a grip portion and an air outlet portion transversely disposed at one end of the grip portion, the grip portion being provided with an air inlet duct, the air outlet portion having a ventilation hole, an air outlet duct, and an air outlet, the ventilation hole penetrating both ends of the air outlet portion in a direction perpendicular to the grip portion, the air outlet being located at one end of the air outlet portion, and the air outlet duct connecting the air outlet and the air inlet duct;

[0006] A main control board is provided in the housing structure;

[0007] a fan assembly, disposed in the air inlet duct and electrically connected to the main control board; and

[0008] A ceramic heating element is arranged in the air outlet duct and surrounds the ventilation hole. The ceramic heating element is electrically connected to the main control board.

[0009] Optionally, the ventilation hole has an air guiding section away from the air outlet, and the air guiding section is arranged to gradually expand in a direction away from the air outlet.

[0010] Optionally, a plurality of ridges are provided on the hole wall of the air guide section, and the plurality of ridges are distributed in sequence and at intervals along the circumference of the air guide section.

[0011] Optionally, the shell structure includes an outer shell and an air guide shell, the outer shell has a mounting portion, the air guide shell is installed in the mounting portion to form the air outlet portion together with the mounting portion, the ventilation hole is provided in the air guide shell, and the air outlet duct is formed between the air guide shell and the mounting portion.

[0012] Optionally, the mounting portion is open at both ends, and the air guide shell includes a separately formed annular front shell and annular rear shell, and the annular front shell and the annular rear shell are butted together to form the ventilation hole.

[0013] Optionally, an annular plate is provided at one end of the annular front shell away from the annular rear shell, the annular plate blocks the opening of the mounting portion, and the annular plate is provided with the air outlet.

[0014] Optionally, the annular plate is provided with an adsorption member, and the adsorption member is used to magnetically attract the air nozzle.

[0015] Optionally, the portion of the shell located on the side of the mounting portion forms the gripping portion, and the mounting portion and the gripping portion are integrally formed; or, the shell includes a connecting portion integrally formed with the mounting portion, a cover plate covering one side of the connecting portion, and a sleeve sleeved on the connecting portion and the cover plate, and the air inlet duct is formed between the cover plate and the connecting portion.

[0016] Optionally, the ceramic heating element is annular and has two wiring parts and two first heating parts connected between the two wiring parts, and the two first heating parts are symmetrically arranged about the line connecting the two wiring parts.

[0017] Optionally, the ceramic heating element further includes two second heating parts connected between the two wiring parts, the two second heating parts form a ring shape, and are symmetrically arranged about the line connecting the two wiring parts, and the first heating part is spaced apart from the second heating part.

[0018] Optionally, the second heating portion and the first heating portion are distributed in a radial direction of the ventilation hole.

[0019] Optionally, the length of the first heating portion is the same as the length of the second heating portion.

[0020] The technical solution of the present utility model is to arrange ventilation holes and air outlet ducts surrounding the ventilation holes in the air outlet part of the shell structure, and to arrange the ceramic heating element in the air outlet duct and surround the ventilation holes. Compared with the traditional electric heating wire heating method, the ceramic heating element has a high heating efficiency, which can make the size of the ceramic heating element smaller, thereby reducing the space occupied by the ceramic heating element in the hair dryer. At the same time, the ceramic heating element can be placed close to the air outlet, which can shorten the flow path of the hot air flow heated by the ceramic heating element in the hair dryer, reduce heat loss, and improve the hot air supply effect. Moreover, when the air flow is blown out from the air outlet, it can drive the air flow in the ventilation hole to flow forward together, thereby increasing the air output. That is, the technical solution of the present application can improve the air outlet effect while reducing the space occupied by the ceramic heating element in the hair dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 This is a structural diagram of an embodiment of a hair dryer of the present utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of the structure on the other side of the hair dryer;

[0024] Figure 3 for Figure 1 a cross-sectional view of the hair dryer;

[0025] Figure 4 for Figure 3 Exploded view of the middle wind guide shell;

[0026] Figure 5 for Figure 3 Schematic diagram of the structure of the ceramic heating element;

[0027] Figure 6 for Figure 5 Front view of the ceramic heating element;

[0028] Figure 7 This is a schematic structural diagram of the outer shell of an embodiment of the hair dryer of the present invention;

[0029] Figure 8 This is a schematic structural diagram of the outer shell of another embodiment of the hair dryer of the present invention.

[0030] Description of Figure Numbers:

[0031] 10. Shell structure; 101. Air inlet duct; 102. Air outlet duct; 103. Air outlet; 104. Ventilation hole; 105. Air guide section; 106. Ridge; 107. Air outlet portion; 11. Outer shell; 112. Grip portion; 113. Mounting portion; 114. Connecting portion; 115. Cover plate; 116. Sleeve; 12. Air guide shell; 121. Annular front shell; 122. Annular plate; 123. Annular rear shell; 20. Ceramic heating element; 21. Wiring portion; 22. First heating portion; 221. Bending section; 222. Ventilation slot; 30. Main control board; 40. Fan assembly; 50. Adsorption part.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] The utility model provides a hair dryer.

[0037] In the embodiment of the present utility model, Figures 1 to 6 As shown, the hair dryer includes a shell structure 10, a main control board 30, a fan assembly 40 and a ceramic heating element 20. The shell structure 10 has a grip portion 112 and an air outlet portion 107 horizontally arranged at one end of the grip portion 112. The grip portion 112 is provided with an air inlet duct 101. The air outlet portion 107 has ventilation holes 104, an air outlet duct 102 and an air outlet 103. The ventilation holes 104 run through both ends of the air outlet portion 107. The air outlet 103 is located at one end of the air outlet portion 107. The air outlet duct 102 connects the air outlet 103 and the air inlet duct 101.

[0038] The main control board 30 is arranged in the shell structure 10; the fan assembly 40 is arranged in the air inlet duct 101 and is electrically connected to the main control board 30; the ceramic heating element 20 is arranged in the air outlet duct 102 and is arranged around the ventilation hole 104, and the ceramic heating element 20 is electrically connected to the main control board 30.

[0039] The direction in which the air outlet portion 107 extends can be substantially perpendicular to the direction in which the grip portion 112 extends, or the direction in which the air outlet portion 107 extends can be tilted at a certain angle relative to the direction in which the grip portion 112 extends. The ventilation holes 104 extend through both ends of the air outlet portion 107 along the direction in which the air outlet portion 107 extends. The ceramic heating element 20 is an integral heating structure, namely, the ceramic heating element 20 has at least two spaced-apart connection portions 21 connected to the main control board 30 via the connection portions 21. When powered on, current flows through the ceramic heating element 20, converting electrical energy into thermal energy and transferring the heat to the surface of the ceramic heating element 20. When air flows through the ceramic heating element 20, heat exchange occurs between the airflow and the ceramic heating element 20, thereby heating the airflow passing through the ceramic heating element 20. Compared to heating wires, ceramic heating elements 20 have high heating efficiency, allowing for smaller sizes, thereby reducing the space occupied by the ceramic heating element 20 within the hair dryer. Furthermore, the ceramic heating element 20 will not melt even after prolonged use, resulting in a longer service life.

[0040] The technical solution of the present utility model is to set a ventilation hole 104 and an air outlet duct 102 surrounding the ventilation hole 104 in the air outlet portion 107 of the shell structure 10, and use a ceramic heating element 20 to set the ceramic heating element 20 in the air outlet duct 102 and set it around the ventilation hole 104. Compared with the traditional electric heating wire heating method, the heating efficiency of the ceramic heating element 20 is high, which can make the size of the ceramic heating element 20 smaller, thereby reducing the space occupied by the ceramic heating element 20 in the hair dryer. At the same time, the ceramic heating element 20 can be placed close to the air outlet 103, which can shorten the flow path of the hot air flow heated by the ceramic heating element 20 in the hair dryer, reduce heat loss, and improve the hot air supply effect. Moreover, when the air flow is blown out from the air outlet 103, it can drive the air flow in the ventilation hole 104 to flow forward together, thereby increasing the air output. That is, the technical solution of the present application can improve the air outlet effect while reducing the space occupied by the ceramic heating element 20 in the hair dryer.

[0041] In some embodiments, the vent 104 includes an air guide section 105 that extends away from the air outlet 103. This section 105 gradually expands in the direction away from the air outlet 103. This allows the airflow from the air outlet 103 to flow forward along with the air in the vent 104, effectively guiding the external airflow into the vent 104, increasing the ventilation volume of the vent 104 and, consequently, the air output of the hair dryer. Optionally, the air guide section 105 is trumpet-shaped. Of course, in other embodiments, the air guide section 105 can also be configured in a conical cylindrical shape.

[0042] In some embodiments, the wall of the air guide section 105 is provided with a plurality of ridges 106, which are spaced apart along the circumference of the air guide section 105. In other words, a groove is formed between adjacent ridges 106. This allows the ridges 106 to cut the airflow, allowing the airflow outside the air guide section 105 to enter the air guide section 105 more evenly, thereby improving the airflow effect. Optionally, the protruding height of the ridges 106 gradually decreases as it approaches the air outlet 103. After guiding the airflow into the middle of the ventilation hole 104, the guiding effect of the ridges 106 on the airflow decreases. This configuration can prevent the ridges 106 from causing disturbances in the airflow.

[0043] In some embodiments, the housing structure 10 includes an outer shell 11 and an air guide housing 12. The outer shell 11 has a grip portion 112 and a mounting portion 113 located at one end of the grip portion 112. The air guide housing 12 is mounted within the mounting portion 113 to form an air outlet 107 together with the mounting portion 113. The ventilation holes 104 are provided in the air guide housing 12, and an air outlet duct 102 is formed between the air guide housing 12 and the mounting portion 113. That is, the air guide housing 12 and the outer shell 11 can be formed separately and then assembled and fixed together. This simplifies the structure of the air guide housing 12 and the outer shell 11, facilitates molding, and helps reduce production costs.

[0044] In some embodiments, the mounting portion 113 is open at both ends, and the air guide housing 12 includes a separately formed annular front shell 121 and an annular rear shell 123, which are connected to form the ventilation hole 104. Specifically, during installation, the ceramic heating element 20 can be first installed on the annular front shell 121, and then the annular front shell 121 and the annular rear shell 123 are connected and fixed, and finally installed into the mounting portion 113. This facilitates assembly and simplifies the structure of the mounting portion 113. The annular front shell 121 and the annular rear shell 123 can be bonded, ultrasonically welded, or fixed to the mounting portion 113 by screws.

[0045] In some embodiments, an annular plate 122 is provided at one end of the annular front housing 121 away from the annular rear housing 123. The annular plate 122 blocks the opening of the mounting portion 113 and defines the air outlet 103. This facilitates the shaping of the air outlet 103, ensuring its stability and preventing air leakage or deformation due to assembly errors that could affect the airflow.

[0046] In some embodiments, the annular plate 122 is provided with an adsorption member 50, which is used to magnetically attract the air nozzle. Specifically, the adsorption member 50 can be a permanent magnet or a ferromagnetic metal member (such as iron, cobalt, or nickel). The air nozzle is provided with a magnetic attraction structure that magnetically cooperates with the adsorption member 50, which facilitates the disassembly and assembly of the air nozzle.

[0047] In some embodiments, the ceramic heating element 20 is annular and has two wiring portions 21 and two first heating portions 22 connected between the two wiring portions 21. The two first heating portions 22 are symmetrically arranged about the line connecting the two wiring portions 21. Specifically, one of the wiring portions 21 is used to connect the positive pole of the power supply, and the other wiring portion 21 is used to connect the negative pole of the power supply. By arranging the two first heating portions 22 symmetrically about the line connecting the two wiring portions 21, the lengths and cross-sections of the two first heating portions 22 can be made to be roughly the same. When current is passed through, the two first heating portions 22 can be made to heat evenly, so that the airflow in the air outlet duct 102 is heated evenly, thereby improving the air outlet effect.

[0048] Optionally, the first heating portion 22 has a plurality of bent sections 221 connected in sequence to form a plurality of ventilation slots 222 on the inner and outer sides of the first heating portion 22. The ventilation slots 222 are provided to extend through the ventilation hole 104 at both ends. Alternatively, the first heating portion 22 is provided with a plurality of through holes, each of which extends through the ventilation hole 104 at both ends.

[0049] In some embodiments, the ceramic heating element 20 also includes two second heating parts connected between the two connecting parts 21. The two second heating parts form a ring and are symmetrically arranged about the connecting line of the two connecting parts 21. The first heating part 22 is separated from the second heating part. In this way, adding the second heating part can increase the contact area between the ceramic heating element 20 and the airflow, thereby improving the heat exchange efficiency.

[0050] Optionally, the second heating portion and the first heating portion 22 are distributed in the radial direction of the ventilation hole 104. Specifically, the second heating portion is spaced apart and located on the periphery of the first heating portion 22, or the first heating portion 22 is spaced apart and located on the periphery of the second heating portion. This allows the second heating portion and the first heating portion 22 to be fully exposed to the airflow, thereby improving heat exchange efficiency. Of course, in other embodiments, the second heating portion and the first heating portion 22 can also be spaced apart and distributed along the length of the ventilation hole 104.

[0051] Optionally, the length of the first heating portion 22 is the same as that of the second heating portion. Specifically, when the second heating portion is spaced apart and located on the periphery of the first heating portion 22, the number of bending sections 221 can be adjusted (the second heating portion can be wavy or arc-shaped) to make the length of the first heating portion 22 longer, ensuring that the length of the first heating portion 22 is the same as that of the second heating portion. This arrangement can avoid the situation where the resistance value of the first heating portion 22 is significantly different from that of the second heating portion due to the difference in length between the first heating portion 22 and the second heating portion, and can make the resistance value of the first heating portion 22 and the second heating portion roughly the same, so that when current is passed through the wiring portion, the first heating portion 22 and the second heating portion can be heated evenly, so that the airflow in the air outlet duct 102 is heated evenly, thereby improving the air outlet effect. Moreover, when the first heating portion 22 is arranged in a wavy shape, the surface area of ​​the first heating portion 22 can be increased, so that the contact area between the ceramic heating element 20 and the airflow is larger, thereby improving the heat exchange efficiency. Of course, in other embodiments, the length of the second heating portion can also be made greater than the length of the first heating portion 22.

[0052] There are many ways to install the ceramic heating element 20. For example, a slot / protrusion can be provided on the outer shell 11 and the air guide shell 12 so that the ceramic heating element 20 is clamped between the outer shell 11 and the air guide shell 12; or, a fixing frame can be provided, and after the ceramic heating element 20 is fixed on the fixing frame, the fixing frame is fixed to the air guide shell 12 (fixed by screws, clips or adhesives).

[0053] Optionally, the ceramic heating element 20 is a silicon carbide ceramic heating element. Specifically, the silicon carbide ceramic heating element is made of silicon carbide ceramic material. By adopting the silicon carbide ceramic heating element as the ceramic heating element 20, the heating efficiency of the ceramic heating element 20 can be improved and the heating rate can be increased. Among them, the silicon carbide ceramic heating element can use silicon carbide powder as the main sintering phase raw material and mix it with one or more conductive phase raw materials 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, and then shape and sinter it according to the designed shape. For example, silicon carbide powder, yttrium oxide powder, aluminum oxide powder and titanium boride powder can be uniformly mixed in a certain mass ratio, and then water is added as a solvent, and the mixture is uniformly mixed using a ball mill, and then spray-dried. The dried powder is heated and mixed with paraffin wax in a certain mass ratio, and poured into a hot die casting machine to complete the hot die casting. After the green body is dried, it is placed in a sintering furnace for sintering to obtain a silicon carbide ceramic heating element. 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 materials.

[0054] In some embodiments, reference Figure 7The portion of the housing 11 located on the side of the mounting portion 113 forms the gripping portion 112, and the mounting portion 113 and the gripping portion 112 are integrally formed. This allows for integral molding, reducing assembly steps.

[0055] In other embodiments, referring to Figure 8 The housing 11 includes a connecting portion 114 integrally formed with the mounting portion 113, a cover plate 115 covering one side of the connecting portion 114, and a sleeve 116 sleeved between the connecting portion 114 and the cover plate 115. The air inlet duct 101 is formed between the cover plate 115 and the connecting portion 114. The cover plate 115, the connecting portion 114, and the sleeve 116 form the grip portion 112. The air guide shell 12 is disposed within the mounting portion 113 to form the air outlet portion 107. Specifically, the connecting portion 114 and the cover plate 115 form a cylindrical shape. When the sleeve 116 is sleeved outside the connecting portion 114 and the cover plate 115, it can cover the gap between the connecting portion 114 and the cover plate 115, thereby achieving assembly and fixation while improving the appearance. This makes the housing 11 simple in structure and easy to produce.

[0056] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A hair dryer, characterized in that: include: The housing structure comprises a grip portion and an air outlet portion transversely arranged at one end of the grip portion, the grip portion being provided with an air inlet duct, the air outlet portion having a ventilation hole, an air outlet duct, and an air outlet, the ventilation hole passing through both ends of the air outlet portion, the air outlet being located at one end of the air outlet portion, and the air outlet duct connecting the air outlet and the air inlet duct; A main control board is provided in the housing structure; A fan assembly is provided in the air inlet duct and is electrically connected to the main control board; as well as A ceramic heating element is arranged in the air outlet duct and surrounds the ventilation hole. The ceramic heating element is electrically connected to the main control board.

2. The hair dryer according to claim 1, wherein The ventilation hole has an air guiding section away from the air outlet, and the air guiding section is gradually expanded in a direction away from the air outlet.

3. The hair dryer according to claim 2, wherein The hole wall of the air guide section is provided with a plurality of ridges, and the plurality of ridges are sequentially spaced apart along the circumference of the air guide section.

4. The hair dryer according to claim 1, wherein The shell structure includes an outer shell and an air guide shell, the outer shell has a mounting portion, the air guide shell is installed in the mounting portion to form the air outlet portion together with the mounting portion, the ventilation hole is provided in the air guide shell, and the air outlet duct is formed between the air guide shell and the mounting portion.

5. The hair dryer according to claim 4, wherein The mounting portion is open at both ends, and the air guide shell includes an annular front shell and an annular rear shell that are formed separately. The annular front shell and the annular rear shell are connected to form the ventilation hole.

6. The hair dryer according to claim 5, wherein An annular plate is provided at one end of the annular front shell away from the annular rear shell, the annular plate blocks the opening of the mounting portion, and the annular plate is provided with the air outlet.

7. The hair dryer according to claim 6, wherein The annular plate is provided with an adsorption component, and the adsorption component is used for magnetically attracting the air nozzle.

8. The hair dryer according to claim 4, wherein The portion of the shell located on the side of the mounting portion forms the gripping portion, and the mounting portion and the gripping portion are integrally formed; or, the shell includes a connecting portion integrally formed with the mounting portion, a cover plate covering one side of the connecting portion, and a sleeve sleeved on the connecting portion and the cover plate, and the air inlet duct is formed between the cover plate and the connecting portion.

9. The hair dryer according to any one of claims 1 to 8, characterized in that The ceramic heating element is annular and has two connecting parts and two first heating parts connected between the two connecting parts. The two first heating parts are symmetrically arranged about the line connecting the two connecting parts.

10. The hair dryer according to claim 9, wherein The ceramic heating element further includes two second heating parts connected between the two connecting parts, the two second heating parts forming a ring shape and symmetrically arranged about the connecting line of the two connecting parts, and the first heating part is spaced apart from the second heating part; The second heating portion and the first heating portion are distributed in the radial direction of the ventilation hole; The length of the first heat generating portion is the same as the length of the second heat generating portion.

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