Hair dryer

Abstract

The utility model discloses a hair drier which comprises a shell, an air guide piece, an air duct shell and a ceramic heating body, and the shell is provided with an air inlet duct extending in the first direction and a mounting cavity located at one end of the air inlet duct. At least part of the air guide piece is arranged in the installation cavity and provided with a through hole which extends in the second direction and is exposed out of the shell, the second direction is perpendicular to the first direction, and an air outlet is formed in the periphery of one end of the through hole. The air duct shell is arranged between the air guide part and the shell and provided with a first opening, a second opening and a mounting opening, an air guide channel is formed between the first opening and the second opening, the first opening is communicated with the corresponding air outlet, the second opening is communicated with the air inlet duct, and the air guide part penetrates through the first opening and the mounting opening and blocks the mounting opening. The ceramic heating body is arranged in the air inlet duct and used for heating air flowing through the air supply duct. According to the technical scheme, the situation that the air flow speed is reduced due to air channel changes can be avoided, and the air outlet speed of the air outlet can be increased.

Description

Technical Field

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

[0002] Hair dryers have become a common appliance in people's daily lives, often used for drying or styling hair. Hair dryers with handles that incorporate an air inlet duct are now quite common. Compared to traditional front-to-back air duct structures, this structure can reduce the front-to-back length of the hair dryer. Traditional hair dryers typically use heating wires, which are typically large. Therefore, the heating wires are typically placed in the upper air duct, resulting in a larger upper air duct. As air flows from the handle air duct to the upper air duct, the larger air duct reduces the airflow velocity, ultimately leading to a decrease in air velocity at the air outlet. Utility Model Content

[0003] The main purpose of the utility model is to provide a hair dryer, aiming to avoid the situation where the air flow velocity is reduced due to changes in the air duct.

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

[0005] The housing has an air inlet duct extending along a first direction and a mounting cavity located at one end of the air inlet duct;

[0006] an air guide member, the air guide member being at least partially disposed in the mounting cavity and having a through hole extending along a second direction and exposed outside the housing, the second direction being perpendicular to the first direction, and an air outlet being disposed at an outer peripheral position of one end of the through hole;

[0007] an air duct shell, disposed between the air guide member and the housing, the air duct shell having a first opening, a second opening, and a mounting opening, an air guide channel being formed between the first opening and the second opening, the first opening corresponding to and communicating with the air outlet, the second opening communicating with the air inlet duct, the mounting opening being arranged opposite to the first opening, the air guide member passing through the first opening and the mounting opening, and blocking the mounting opening; and

[0008] A ceramic heating element is provided in the air inlet duct, and is used for heating the air flowing through the air inlet duct.

[0009] Optionally, the inner wall of the air guide channel is spaced apart from the air guide member to form an annular air duct between the inner wall of the air guide channel and the air guide member, and the air outlet surrounds the outer periphery of the through hole.

[0010] Optionally, the air duct shell further has an extension portion, which surrounds the outside of the installation opening, and the air guide member extends into the extension portion and is sealed between the extension portion.

[0011] Optionally, the air guiding channel is arranged in an arc shape and gradually bends from the second opening toward the first opening.

[0012] Optionally, the shell has a first assembly port and a second assembly port that are opposite to each other and connected to the installation cavity, the air guide member includes a cylinder and an annular plate arranged at one end of the cylinder, the annular plate is sealed at the first assembly port, the air outlet is arranged on the annular plate, and the end of the cylinder away from the annular plate is connected to the second assembly port.

[0013] Optionally, the shell includes a front shell and a rear shell, the front shell and the rear shell enclose the installation cavity and at least part of the air inlet duct in the first direction, and the ceramic heating element is arranged between the front shell and the rear shell.

[0014] Optionally, the front shell has a first air duct portion, the rear shell has a second air duct portion, the first air duct portion and the second air duct portion enclose at least part of the air inlet duct, and the ceramic heating element is arranged between the first air duct portion and the second air duct portion.

[0015] Optionally, the housing further includes a handle sleeve, and the handle sleeve is sleeved outside the first air duct portion and the second air duct portion.

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

[0017] Optionally, the heating portion is bent in multiple sections in the circumferential direction of the ceramic heating element to form multiple ventilation grooves on the inner and outer sides of the heating portion, and the ventilation grooves are through-set at both ends in the first direction.

[0018] Optionally, the hair dryer includes a fan assembly, the fan assembly is arranged in the air inlet duct, and the ceramic heating element is located between the fan assembly and the air guide channel.

[0019] Optionally, the hair dryer further includes a light emitting component, which is disposed at an end of the shell away from the air outlet and surrounds the through hole.

[0020] The beneficial effect of the present invention is that the ceramic heating element is arranged in the air inlet duct, and the air duct shell is arranged between the air guide member and the shell, the air guide member passes through the first opening and the installation port, and blocks the installation port. Since the ceramic heating element has a high heating efficiency, the size of the ceramic heating element can be made smaller, so that the ceramic heating element can be installed using the air inlet duct, avoiding the situation where the air duct between the air inlet duct and the air outlet is too large due to the need to install a heating wire. At the same time, when the air guide member passes through the first opening and the installation port, the air guide member occupies part of the space of the air guide channel, which can reduce the effective cross-sectional area of ​​the air guide channel, making the effective cross-sectional area of ​​the air guide channel smaller, avoiding the situation where the air flow velocity is weakened due to the excessive effective cross-sectional area of ​​the air guide channel when the air flow flows from the air inlet duct to the air guide channel, that is, avoiding the situation where the air flow velocity is reduced due to the change of the air duct, which is beneficial to improving the air outlet speed. 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 a cross-sectional view of the hair dryer;

[0024] Figure 3 for Figure 2 Cross-sectional view of the middle air guide and the air duct shell;

[0025] Figure 4 for Figure 2 Schematic diagram of the structure of the stroke shell;

[0026] Figure 5 for Figure 1 Exploded view of the middle shell;

[0027] Figure 6 for Figure 2 Schematic diagram of the structure of the ceramic heating element;

[0028] Figure 7 for Figure 6 Front view of the ceramic heating element;

[0029] Figure 8 for Figure 1 Exploded view of the other side of the hair dryer.

[0030] Description of Figure Numbers:

[0031] 10. Shell; 101. Mounting cavity; 102. Air inlet duct; 103. First assembly port; 104. Second assembly port; 11. Front shell; 111. First air duct portion; 12. Rear shell; 121. Second air duct portion; 13. Handle sleeve; 14. Rear cover; 15. Light-transmitting portion; 20. Air guide member; 21. Cylinder; 211. Through hole; 22. Annular plate; 221. Air outlet; 30. Duct shell; 31. First opening; 32. Second opening; 33. Mounting port; 34. Air guide channel; 35. Extension portion; 40. Ceramic heating element; 41. Wiring portion; 42. Heating portion; 43. Ventilation slot; 50. Fan assembly; 60. Main control board; 70. Light-emitting assembly; 71. Ring circuit board; 72. Light-emitting element; 80. Sealing gasket.

[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 8 As shown, the hair dryer includes a housing 10, an air guide 20, an air duct shell 30 and a ceramic heating element 40. The housing 10 has a first direction (refer to Figure 2 An air inlet duct 102 extending in the direction indicated by the arrow X in the middle and a mounting cavity 101 located at one end of the air inlet duct 102.

[0038] The air guide 20 is at least partially disposed in the mounting cavity 101 and has a second direction (refer to Figure 2 The through hole 211 extends in the direction indicated by the middle arrow Y) and is exposed outside the shell 10, the second direction is perpendicular to the first direction, and an air outlet 221 is provided at the outer periphery of one end of the through hole 211.

[0039] The air duct housing 30 is disposed between the air guide 20 and the housing 10. The air duct housing 30 has a first opening 31, a second opening 32, and a mounting opening 33. An air guide channel 34 is formed between the first opening 31 and the second opening 32. The first opening 31 corresponds to and communicates with the air outlet 221, the second opening 32 communicates with the air inlet 102, and the mounting opening 33 is disposed opposite the first opening 31. The air guide 20 passes through the first opening 31 and the mounting opening 33, thereby blocking the mounting opening 33. That is, the second opening 32 is located between the first opening 31 and the mounting opening 33. The inner wall of the air guide channel 34 is at least partially separated from the air guide 20 to ensure normal airflow.

[0040] The ceramic heating element 40 is disposed in the air inlet duct 102 , and is used to heat the air flowing through the air inlet duct 102 .

[0041] Specifically, the hair dryer further includes a fan assembly 50, which is disposed within the air inlet duct 102. The air inlet duct 102 has an air inlet at one end away from the air duct housing 30. The fan assembly 50 is configured to drive air from the air inlet duct 102 into the air guide channel 34 and then out through the air outlet 221. The air outlet 221 may be formed on an end surface of the housing 10, provided on the air guide 20, or formed by partially separating the air guide 20 from the housing 10.

[0042] The ceramic heating element 40 is a heating structure as a whole, that is, there are at least two spaced-apart wiring parts 41 on the ceramic heating element 40, which are connected to the main control board 60 through the wiring parts 41. After the power is turned on, current flows through the ceramic heating element 40, thereby converting electrical energy into thermal energy and transferring the heat to the surface of the ceramic heating element 40. When air flows through the ceramic heating element 40, the airflow and the ceramic heating element 40 can exchange heat, thereby heating the airflow passing through the ceramic heating element 40. Compared with electric heating wires, the ceramic heating element 40 has a high heating efficiency, which can make the ceramic heating element 40 smaller in size, thereby reducing the space occupied by the ceramic heating element 40 in the hair dryer. Moreover, the ceramic heating element 40 will not melt even if used for a long time, and has a longer service life.

[0043] The technical solution of the present invention is to dispose the ceramic heating element 40 in the air inlet duct 102, and dispose the air duct housing 30 between the air guide 20 and the housing 10. The air guide 20 passes through the first opening 31 and the installation port 33, and blocks the installation port 33. Due to the high heating efficiency of the ceramic heating element 40, the size of the ceramic heating element 40 can be made smaller, so that the ceramic heating element 40 can be installed in the air inlet duct 102, avoiding the situation where the air duct between the air inlet duct 102 and the air outlet 221 is too large due to the need to install a heating wire. At the same time, when the air guide member 20 passes through the first opening 31 and the installation port 33, the air guide member 20 occupies part of the space of the air guide channel 34, which can reduce the effective cross-sectional area of ​​the air guide channel 34, so that the effective cross-sectional area of ​​the air guide channel 34 is smaller, avoiding the situation where the airflow velocity is weakened due to the excessive effective cross-sectional area of ​​the air guide channel 34 when the air flow flows from the air inlet duct 102 to the air guide channel 34, that is, avoiding the situation where the airflow velocity is reduced due to the change of the air duct, which is beneficial to improving the air outlet speed of the air outlet 221.

[0044] By providing the through hole 211 , when the airflow is blown out from the air outlet 221 , the airflow in the through hole 211 can be driven to flow forward, thereby increasing the air output.

[0045] In some embodiments, the ceramic heating element 40 is located between the fan assembly 50 and the air guide duct 34. This allows the ceramic heating element 40 to be close to the air outlet 221, shortening the flow path of the hot air from the ceramic heating element 40 to the air outlet 221, thereby reducing heat loss and preventing the hot air from flowing through the fan assembly 50, thereby preventing the fan assembly 50 from overheating. Of course, in other embodiments, the ceramic heating element 40 can also be located on the side of the fan assembly 50 away from the air outlet duct.

[0046] In some embodiments, the inner wall of the air guide channel 34 is spaced apart from the air guide member 20 to form an annular air duct between the inner wall of the air guide channel 34 and the air guide member 20, and the air outlet 221 surrounds the outer periphery of the through-hole 211. Specifically, an annular air duct is formed between the inner wall of the air guide channel 34 and the outer peripheral surface of the air guide member 20 located within the air guide channel 34, and the air outlet 221 is annular. This allows the airflow within the air guide channel 34 to flow around the air guide member 20 and out around the through-hole 211, thereby better guiding the airflow in the through-hole 211 to flow forward together, thereby improving the air outlet effect.

[0047] In some embodiments, the air duct housing 30 further includes an extension portion 35, which surrounds the outside of the mounting opening 33. The air guide 20 extends into the extension portion 35 and is sealed with the extension portion 35. This arrangement can increase the matching length of the air guide 20 and the air duct housing 30, and improve the connection stability between the air duct housing 30 and the air guide 20. Optionally, a sealing gasket 80 is provided between the extension portion 35 and the air guide 20. That is, during design and production, the gap between the extension portion 35 and the air guide 20 can be made larger, and during assembly, the gap between the extension portion 35 and the air guide 20 is sealed by the sealing gasket 80. This can reduce the matching accuracy requirements between the extension portion 35 and the air guide 20, and can reduce production costs.

[0048] In some embodiments, the air guide channel 34 is arc-shaped and gradually curves from the second opening 32 toward the first opening 31. Specifically, the inner wall of the air guide channel 34 is a smooth curved surface that gradually curves from the second opening 32 toward the first opening 31. This allows the airflow from the second opening 32 to the air guide channel 34 to be gradually directed toward the first opening 31 and the air outlet 221 by the inner wall of the air guide channel 34. This prevents the airflow from vertically impacting the inner wall of the air guide channel 34, which could cause airflow turbulence. This reduces wind speed attenuation and improves airflow efficiency.

[0049] In some embodiments, the housing 10 has a first assembly opening 103 and a second assembly opening 104 that are opposite and communicate with the mounting cavity 101. The air guide 20 includes a cylinder 21 and an annular plate 22 disposed at one end of the cylinder 21. The annular plate 22 seals the first assembly opening 103, and an air outlet 221 is disposed on the annular plate 22. The end of the cylinder 21 away from the annular plate 22 is connected to the second assembly opening 104. Compared to forming the air outlet 221 by spacing the air guide 20 from the edge of the first transfer opening, forming the air outlet 221 on the air guide 20 is easier to form and can meet the assembly precision requirements of the air guide 20 and the first transfer opening, which helps reduce production costs.

[0050] In some embodiments, the housing 10 includes a front housing 11 and a rear housing 12, which enclose a mounting cavity 101 and at least a portion of an air inlet duct 102 along a first direction. During installation, the ceramic heating element 40 and corresponding circuitry can be first mounted on the front housing 11 or the rear housing 12, and then the front housing 11 and the rear housing 12 can be fastened together. This simplifies the structure of the front housing 11 and the rear housing 12, facilitates production and molding, and also facilitates assembly of the ceramic heating element 40.

[0051] In some embodiments, the front shell 11 has a first air duct portion 111, and the rear shell 12 has a second air duct portion 121. The first air duct portion 111 and the second air duct portion 121 enclose at least a portion of the air inlet duct 102, and the ceramic heating element 40 is disposed between the first air duct portion 111 and the second air duct portion 121. Optionally, the shell 10 further includes a handle sleeve 13, which is disposed outside the first air duct portion 111 and the second air duct portion 121. When the first air duct portion 111 and the second air duct portion 121 are assembled together, they are roughly cylindrical, and the handle sleeve 13 is also roughly cylindrical. During installation, the ceramic heating element 40 and the corresponding circuit can be first installed in the first air duct portion 111 or the second air duct portion 121, and then the first air duct portion 111 and the second air duct portion 121 can be buckled together. Finally, the handle sleeve 13 can be adapted to be arranged outside the first air duct portion 111 and the second air duct portion 121 to cover the gap between the first air duct portion 111 and the second air duct portion 121. In this way, the structure of the front shell 11, the rear shell 12 and the handle sleeve 13 can be simplified, which is convenient for production and molding. It can also avoid gaps on the handle surface, avoid stains from accumulating, and facilitate cleaning. Of course, in other embodiments, the handle sleeve 13 may not be provided.

[0052] In some embodiments, the ceramic heating element 40 is annular and has two wiring parts 41 and two heating parts 42 connected between the two wiring parts 41, and the two heating parts 42 are symmetrically arranged about the line connecting the two wiring parts 41. Specifically, the handheld hair dryer also includes a main control board 60, and the two wiring parts 41 are electrically connected to the main control board 60, one of the wiring parts 41 is used to connect to the positive pole of the power supply, and the other wiring part 41 is used to connect to the negative pole of the power supply. After the power is turned on, the current flows through the two heating parts 42, thereby converting the electrical energy into thermal energy. When an airflow flows through the surface of the heating part 42, the airflow can be heat-exchanged with the heating part 42, thereby heating the airflow flowing through the ceramic heating element 40. By arranging the two heating parts 42 symmetrically about the line connecting the two wiring parts 41, the length and cross-section of the two heating parts 42 can be made to be roughly the same. When the current is passed through, the two heating parts 42 can be heated evenly, so that the airflow in the air outlet duct is heated evenly, thereby improving the heat exchange effect.

[0053] Optionally, the heating portion 42 is bent in multiple sections along the circumferential direction of the ceramic heating element 40 to form a plurality of ventilation slots 43 on both the inner and outer sides of the heating portion 42. The ventilation slots 43 are arranged to extend through both ends in the first direction. This can increase the surface area of ​​the heating portion 42, thereby improving heat exchange efficiency. In other embodiments, the heating portion 42 is provided with multiple vias, each of which extends through both ends in the first direction.

[0054] Of course, in other embodiments, the ceramic heating element 40 includes an inner ring portion, an outer ring portion with a spacer ring disposed outside the inner ring portion, and multiple connecting portions connecting the inner and outer ring portions. The multiple connecting portions are spaced apart circumferentially around the inner ring portion, and heat exchange holes are formed between any two adjacent connecting portions. This increases the surface area of ​​the ceramic heating element 40 and improves heat exchange efficiency.

[0055] In some embodiments, the hair dryer further includes a light-emitting assembly 70, which is disposed at an end of the housing 10 away from the air outlet 221 and surrounds the through-hole 211. Specifically, the light-emitting assembly 70 is electrically connected to the main control board 60 and can be used to indicate the operating status of the hair dryer. For example, the light-emitting assembly 70 can illuminate when the hair dryer is powered on and turn off when the power is off. Different colors can also be used to indicate different operating states of the hair dryer. For example, in cold air mode, the light-emitting assembly 70 can emit blue light. In hot air mode, the light-emitting assembly 70 can emit red light, and so on, which can provide a better indication of the hair dryer's operating status.

[0056] In some embodiments, the housing 10 further includes a back cover 14, which is annular and covers the end of the back shell 12 away from the front shell 11. The light-emitting assembly 70 is disposed between the back cover 14 and the back shell 12. The portion of the back cover 14 corresponding to the light-emitting assembly 70 is provided with a light-transmitting portion 15, so that light from the light-emitting assembly 70 can be emitted outward through the light-transmitting portion 15. The light-transmitting portion 15 can be integrally formed with the back cover 14 or separately provided from the back cover 14. Optionally, the light-emitting assembly 70 includes an annular circuit board 71 and a light-emitting element 72 disposed on the annular circuit board 71, so that the annular circuit board 71 and the light-emitting element 72 form an integral module, which facilitates assembly.

[0057] 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 has an air inlet duct extending along a first direction and a mounting cavity located at one end of the air inlet duct; an air guide member, the air guide member being at least partially disposed in the mounting cavity and having a through hole extending along a second direction and exposed outside the housing, the second direction being perpendicular to the first direction, and an air outlet being disposed at an outer peripheral position of one end of the through hole; an air duct housing disposed between the air guide member and the housing, the air duct housing having a first opening, a second opening, and a mounting opening, an air guide channel being formed between the first opening and the second opening, the first opening corresponding to and communicating with the air outlet, the second opening communicating with the air inlet duct, the mounting opening being arranged opposite to the first opening, the air guide member passing through the first opening and the mounting opening, and blocking the mounting opening; as well as A ceramic heating element is provided in the air inlet duct, and is used for heating the air flowing through the air inlet duct.

2. The hair dryer according to claim 1, wherein The inner wall of the air guide channel is spaced apart from the air guide member to form an annular air duct between the inner wall of the air guide channel and the air guide member, and the air outlet surrounds the outer periphery of the through hole.

3. The hair dryer according to claim 1, wherein The air duct shell further has an extension portion, which surrounds the outside of the installation opening. The air guide member extends into the extension portion and is sealed with the extension portion.

4. The hair dryer according to claim 1, wherein The air guiding channel is arranged in an arc shape and gradually bends from the second opening toward the first opening.

5. The hair dryer according to claim 1, wherein The shell has a first assembly port and a second assembly port that are opposite to each other and connected to the installation cavity. The air guide member includes a cylinder and an annular plate arranged at one end of the cylinder. The annular plate blocks the first assembly port, and the air outlet is arranged on the annular plate. The end of the cylinder away from the annular plate is connected to the second assembly port.

6. The hair dryer according to claim 1, wherein The shell includes a front shell and a rear shell, and the front shell and the rear shell enclose the installation cavity and at least a part of the air inlet duct in the first direction. The ceramic heating element is arranged between the front shell and the rear shell.

7. The hair dryer according to claim 6, wherein The front shell has a first air channel portion, and the rear shell has a second air channel portion. The first air channel portion and the second air channel portion enclose at least a portion of the air inlet duct, and the ceramic heating element is arranged between the first air channel portion and the second air channel portion. The housing further includes a handle sleeve, and the handle sleeve is sleeved outside the first air duct portion and the second air duct portion.

8. The hair dryer according to any one of claims 1 to 7, characterized in that The ceramic heating element is annular and has two connecting parts and two heating parts connected between the two connecting parts. The two heating parts are symmetrically arranged about the line connecting the two connecting parts.

9. The hair dryer according to claim 8, wherein The heating portion is bent in multiple sections in the circumferential direction of the ceramic heating element to form a plurality of ventilation slots on both the inner and outer sides of the heating portion. The ventilation slots are through-set at both ends in the first direction.

10. The hair dryer according to any one of claims 1 to 7, characterized in that The hair dryer includes a fan assembly, the fan assembly is arranged in the air inlet duct, and the ceramic heating element is located between the fan assembly and the air guide channel; And / or, the hair dryer further includes a light emitting component, which is disposed at an end of the shell away from the air outlet and surrounds the through hole.

Images