Hair dryer

Abstract

The present invention discloses a hair dryer, which includes a first air duct, a second air duct, a flow guiding member and a heating member. The first air duct has a first air passage. Along the circumferential direction of the first air duct, the second air duct surrounds the outside of the first air duct. A second air passage is formed between the first air duct and the second air duct. The flow guiding member is accommodated inside the first air passage. Air enters from the first air inlet and the second air inlet and is blown out from the first air outlet and the second air outlet. The heating member is used to heat the air flow in the first air passage. In the present invention, the inner wall of the second air duct and the outer wall of the first air duct guide the air flow in the second air passage. There is an obvious temperature difference between the air flows blown out from the first air passage and the second air passage. When blowing hair, the air flows blown out from the first air passage and the second air passage act on different areas of the hair alternately. The hair is subjected to the alternating action of cold air and hot air, and the moisture can be quickly evaporated without repeatedly switching the cold and hot air modes and shaking the hair dryer, which is convenient to use and has a high drying efficiency for the hair.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical appliances, and particularly to a hair dryer. Background Art

[0002] A hair dryer is used for drying and shaping hair. In the related art, the air flow blown out from the air duct of the hair dryer is all hot air or all cold air. When using all hot air to blow hair, the moisture in the hair is easily lost, resulting in frizzy hair. When using all cold air to blow hair, the evaporation rate of the moisture on the hair is slow, and the hair is not easily dried. It is often necessary to shake the hair dryer or use hot and cold air alternately, which is rather inconvenient in operation. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a hair dryer, which has obvious hot and cold areas, and is highly convenient and efficient for drying hair.

[0004] The hair dryer according to an embodiment of the present invention includes:

[0005] A first air duct, which is hollow inside to form a first air passage. The two ends of the first air passage are respectively a first air inlet and a first air outlet;

[0006] A second air duct, along the circumferential direction of the first air duct, the second air duct surrounds the outside of the first air duct. A second air passage is formed between the first air duct and the second air duct. The two ends of the second air passage are respectively a second air inlet and a second air outlet;

[0007] A flow guiding member, which is accommodated inside the first air duct and close to the first air inlet. The flow guiding member is used to generate an air flow, so that air enters from the first air inlet and the second air inlet, and is blown out from the first air outlet and the second air outlet;

[0008] A heating member, which is accommodated inside the first air duct. The heating member is used to heat the air flow inside the first air duct.

[0009] The hair dryer according to an embodiment of the present invention has at least the following beneficial effects:

[0010] In the hair dryer according to the embodiment of the present invention, since the inner wall of the second air duct and the outer wall of the first air duct guide the air flow in the second air duct, there is an obvious temperature difference between the air flows blown out from the first air duct and the second air duct. When blowing hair, the air flows blown out from the first air duct and the second air duct act on different areas of the hair alternately. The hair is alternately affected by cold air and hot air, and the moisture can evaporate quickly. There is no need to repeatedly switch the hot and cold air modes and shake the hair dryer. It is convenient to use and the hair drying efficiency is high.

[0011] According to some embodiments of the present invention, the first air duct has a diversion opening, and the diversion opening communicates with the first air passage and the second air passage.

[0012] According to some embodiments of the present invention, a plurality of the diversion openings are arranged at intervals along the axial direction of the first air duct.

[0013] According to some embodiments of the present invention, the first air duct is provided with a first diversion wall and a second diversion wall which are oppositely arranged. The first diversion wall is located on one side of the second diversion wall close to the drainage member. The first diversion wall is bent towards the outside of the first air duct, and the second diversion wall is bent towards the inside of the first air duct. A gap between the first diversion wall and the second diversion wall forms the diversion opening.

[0014] According to some embodiments of the present invention, along the radial direction of the first air duct, there is a gap between the end face of the first diversion wall and the end face of the second diversion wall.

[0015] According to some embodiments of the present invention, along the axial direction of the first air duct, the diversion opening is located between the drainage member and the heating member.

[0016] According to some embodiments of the present invention, one end of the first air duct close to the first air inlet protrudes relative to the end face of the second air duct to form a protruding section, and the drainage member is located at one end of the first air passage close to the protruding section.

[0017] According to some embodiments of the present invention, an ion generator is further included. The ion generator is accommodated in the second air passage, and the ion generator is used to release ions.

[0018] According to some embodiments of the present invention, a filter screen is further included. The filter screen is connected to the end faces of the first air duct and the second air duct and covers the first air inlet and the second air inlet.

[0019] According to some embodiments of the present invention, a support member is further included. The support member is accommodated in the second air passage, and both ends of the support member are respectively connected to the first air duct and the second air duct.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0021] The present invention will be further described below in conjunction with the drawings and embodiments, where:

[0022] Figure 1 is a schematic structural diagram of an embodiment of a hair dryer according to the present invention;

[0023] Figure 2 is Figure 1 Internal schematic diagram of the hair dryer in

[0024] Figure 3 Schematic diagram of another embodiment of the hair dryer of the present invention;

[0025] Figure 4 Schematic diagram of the air outlet area of the hair dryer of the present invention.

[0026] Reference numerals:

[0027] The first air duct 100, the first air passage 110, the first air inlet 120, the first air outlet 130, the central air outlet area 140, the protruding section 150, the diversion port 160, the first diversion wall 170, the second diversion wall 180; the second air duct 200, the second air passage 210, the second air inlet 220, the second air outlet 230, the external air outlet area 240, the drainage member 300; the driving member 400; the supporting member 500; the heating member 600; the filter screen 700; the ion generator 800; the negative ion module 900. Detailed description of the specific implementation

[0028] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0029] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0030] In the description of the present invention, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or the sequence relationship of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution.

[0032] In the description of the present invention, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0033] In an embodiment of the present invention, a hair dryer is provided for generating an air flow and drying hair. Referring to Figure 1 and Figure 2 , the hair dryer includes a first air duct 100 and a second air duct 200. The interior of the first air duct 100 is hollow to form a first air passage 110. The second air duct 200 surrounds the outside of the first air duct 100 along the circumferential direction of the first air duct 100. A second air passage 210 is formed between the outer wall and the inner wall of the first air duct 100. Both the first air passage 110 and the second air passage 210 are available for the air flow to flow through. Specifically, the two ends of the first air passage 110 are respectively a first air inlet 120 and a first air outlet 130. The two ends of the second air passage 210 are respectively a second air inlet 220 and a second air outlet 230. The hair dryer further includes a diversion member 300. The diversion member 300 is accommodated inside the first air passage 110. The diversion member 300 can generate an air flow to introduce external air into the first air passage 110. The external air enters the first air passage 110 from the first air inlet 120 and is blown out from the first air outlet 130. When the external air is introduced into the first air passage 110, a negative pressure is formed in the area outside the first air passage 110 on the outside of the hair dryer, driving the external air to flow and enter the second air passage 210 from the second air inlet 220. The air flow in the second air passage 210 is discharged from the second air outlet 230.

[0034] The first air passage 110 is the active air passage, and the second air passage 210 is the passive air passage. As Figure 4As shown in the figure, the air flow in the first air duct 110 forms a central air outlet area 140 outside the first air outlet 130. The air flow generated by the flow guiding member 300 in the first air duct 110 forms a driven air flow in the second air duct 210. The driven air flow is restricted by the outer wall of the first air cylinder 100 and the inner wall of the second air cylinder 200 and flows along the axial direction of the first air cylinder 100, thereby forming an obvious outer air outlet area 240 outside the second air outlet 230. The outer air outlet area 240 is arranged around the outside of the central air outlet area 140; the heating member 400 heats the air flow in the first air duct 100. The central air outlet area 140 is a hot air area, natural air enters the second air duct 210, and the outer air outlet area 240 is a cold air area. There is an obvious boundary between the hot air area and the cold air area. When drying hair, as the hair dryer blows air to different areas of the hair, the hair is affected by the alternating action of the cold air area and the hot air area, and through the cold and heat exchange, the evaporation of moisture is accelerated.

[0035] Therefore, in the hair dryer according to the embodiment of the present invention, since the inner wall of the second air cylinder 200 and the outer wall of the first air cylinder 100 guide the air flow in the second air duct 210, there can be an obvious temperature difference between the air flows blown out in the first air duct 110 and the second air duct 210. When blowing on the hair, the air flows blown out from the first air duct 110 and the second air duct 210 act on different areas of the hair alternately. The hair is affected by the alternating action of cold air and hot air, and the moisture can be quickly evaporated without repeatedly switching the cold and hot air modes and shaking the air cylinder, which is convenient to use and has a high drying efficiency for the hair.

[0036] As Figure 1 And Figure 2 As shown in the figure, one end of the first air cylinder 100 close to the first air inlet 120 protrudes relative to the end face of the second air cylinder 200 and forms a protruding section 150. The flow guiding member 300 is located at one end of the first air duct 110 close to the protruding section 150. The first air cylinder 100 is lengthened compared with the second air cylinder 200, and the internal space of the first air cylinder 100 is increased, which is convenient for the installation of other components, and makes the flow guiding member 300 closer to the first air inlet 120 than the second air inlet 220, increasing the air volume and air pressure entering the second air duct 210, and making the air outlet areas of the first air duct 110 and the second air duct 210 more obvious.

[0037] The hair dryer should also include a driving member 400. The driving member 400 is connected to the flow guiding member 300 and is used to drive the flow guiding member 300 to rotate. The driving member 400 can be selected as a motor or a motor. The flow guiding member 300 can be an axial flow air wheel or a centrifugal air wheel. In an embodiment of the present invention, the flow guiding member 300 is selected as an axial flow air wheel, so that the air flow in the first air duct 110 spirally flows and converges towards the center, thereby further increasing the obviousness of the air outlet areas of the first air duct 110 and the second air duct 210.

[0038] The first air duct 100 can be set in a cylindrical shape, and the inner wall of the first air duct 100 is smooth to avoid increasing noise due to the unevenness of the inner wall of the first air duct 100; the cross-section of the second air duct 200 can be arc-shaped or circular. In an embodiment of the present invention, the cross-sections of both the first air duct 100 and the second air duct 200 are set to be circular. The second air passage 210 is an annular cavity, and the external air outlet area 240 surrounds the central air outlet area 140 for one week. The flow direction of the air flow in the second air passage 210 is restricted by the annular second air duct 200 and flows along the axial direction of the first air duct 100, which can increase the air volume and air pressure in the first air passage 110 at the same time.

[0039] The first air duct 100 and the second air duct 200 are separated from each other by the support of the support member 500. The support member 500 is accommodated in the second air passage 210. Both sides of the support member 500 are respectively connected to the outer wall of the first air duct 100 and the inner wall of the second air duct 200, so that the first air duct 100 and the second air duct 200 are kept relatively fixed. The first air duct 100, the second air duct 200 and the support member 500 can be integrally formed by injection molding or assembled with each other in a detachable manner. As Figure 1 shown, a plurality of support members 500 can be provided. The plurality of support members 500 are arranged at intervals along the circumferential direction of the first air duct 100. The plurality of support members 500 can be respectively connected to different positions of the first air duct 100 and the second air duct 200 to improve the structural strength of the connection between the first air duct 100 and the second air duct 200; it should be noted that the support member 500 should extend along the axial direction of the first air duct 100 to avoid the support member 500 blocking the flow of the air flow in the second air passage 210.

[0040] The support member 500 can divide the second air passage 210 into a plurality of air passages along the circumferential direction of the first air duct 100. The support member 500 can be set in a plate shape, a grid shape, or the support member 500 includes a plurality of columns arranged at intervals along the axial direction of the first air duct 100, and both ends of the columns are respectively connected to the first air duct 100 and the second air duct 200. In an embodiment of the present invention, the support member 500 is set in a flat plate shape and extends along the axial direction of the first air duct 100, which has little influence on the air intake of the first air passage 110 and the second air passage 210, and can avoid the problems of unclear cold and hot areas and increased noise caused by the cross of the air flows in the first air passage 110 and the second air passage 210.

[0041] In an embodiment of the present invention, as Figure 3As shown, the first air duct 100 is provided with a diversion opening 160. The diversion opening 160 is formed in the side wall of the first air duct 100 and is in communication with the first air passage 110 and the second air passage 210. The air flow in the first air passage 110 can flow into the second air passage 210 through the diversion opening 160, thereby increasing the air pressure and air speed of the air flow in the second air passage 210, making the air outlet area of the air flows blown out by the first air passage 110 and the second air passage 210 more obvious outside the air outlet.

[0042] In the present invention, as Figure 4 shown, the heating element 600 is accommodated in the first air passage 110 and is located on the side of the air guiding member 300 close to the first air outlet 130. Thus, the air flow generated by the air guiding member 300 can flow through the heating element 600, and is heated to form hot air at the heating element 600 and blown out from the first air outlet 130. The heating element 600 can be set as a heating wire, a heating mesh, etc. The heating element 600 can be disposed close to the inner wall of the first air duct 100 to reduce the influence on the air flow rate in the first air passage 110, or the heating element 600 is set as a mesh. On the one hand, it can avoid blocking the air flow, and on the other hand, it can increase the contact area with the air flow and improve the heating effect on the air flow.

[0043] To prevent the hot air in the first air passage 110 from entering the second air passage 210 through the diversion opening 160, in the axial direction of the first air duct 100, the diversion opening 160 should be located between the air guiding member 300 and the heating element 600. The air flow entering the second air passage 210 from the diversion opening 160 is not heated by the heating element 600, which can avoid the cross of the hot air in the first air passage 110 and the hot air in the second air passage 210. And because the air flow generated by the air guiding member 300 has a certain flow rate, after this air path enters the second air passage 210, it can increase the flow rate, air pressure of the original air flow in the second air passage 210 and the air volume at the second air outlet 230, thereby enhancing the obviousness of the air outlet areas of the first air passage 110 and the second air passage 210.

[0044] The diversion opening 160 can be a through hole formed in the side wall of the first air duct 100. The diversion opening 160 extends along the circumferential direction of the first air duct 100. The diversion opening 160 can be set as an arc, or the diversion opening 160 is set as a ring. Multiple diversion openings 160 can be provided to increase the air volume entering the second air passage 210 from the diversion opening 160; in one embodiment, a plurality of diversion openings 160 are arranged at intervals along the axial direction of the first air duct 100. During the flow of the air flow in the first air passage 110, it can continuously flow into the second air passage 210, increasing the air volume and air speed in the second air passage 210.

[0045] In one embodiment, as Figure 3As shown in the figure, the first air duct 100 is provided with two relatively arranged first diversion walls 170 and second diversion walls 180. The first diversion wall 170 is located on the side of the second diversion wall 180 close to the diversion member 300. The first diversion wall 170 bends towards the outside of the first air duct 100, and the second diversion wall 180 bends towards the inside of the first air duct 100. There is a gap between the first diversion wall 170 and the second diversion wall 180, and this gap forms a diversion opening 160. Due to the guiding effect of the first diversion wall 170 and the second diversion wall 180, the air flow in the first air duct 110 can quickly enter the second air duct 210 along the diversion opening 160, improving the diversion efficiency of the diversion opening 160.

[0046] It should be noted that the diversion opening 160 should be arranged close to the second air inlet 220 so that the air flow in the second air duct 210 can be accelerated as soon as it enters the second air inlet 220, and the air flow in the second air duct 210 can quickly blow out from the second air outlet 230. In addition, the first diversion wall 170 and the second diversion wall 180 can be parallel to each other to ensure the diversion effect. The first diversion wall 170 should extend towards the flowing direction of the air flow to avoid the first diversion wall 170 extending too deep into the second air duct 210 and blocking the air flow in the second air duct 210; there is no overlap or there is a gap between the first diversion wall 170 and the second diversion wall 180 in the radial direction of the first air duct 100, while guiding the air flow, reducing the resistance of the air flow in the first air duct 110 flowing towards the second air duct 210.

[0047] In one embodiment, as Figure 3 shown, the hair dryer may further include a filter screen 700. The filter screen 700 is connected to the end faces of the first air duct 100 and the second air duct 200. The filter screen 700 covers the first air inlet 120 and the second air inlet 220. The filter screen 700 can filter the air entering the first air duct 110 and the second air duct 210, serving the purpose of blocking dust, capillary substances, etc. It can be imagined that on the end faces of the air outlet ends of the first air duct 100 and the second air duct 200, a filter screen 700 can also be provided. The filter screen 700 covers the first air outlet 130 and the second air outlet 230. The air is double-filtered at the air inlet and the air outlet, which can improve the filtering degree.

[0048] In addition, in one embodiment of the present invention, as Figure 4 shown, the hair dryer further includes an ion generator 800. The ion generator 800 is accommodated in the second air duct 210. The ion generator 800 is used to release ions. The ions can follow the air flow in the second air duct 210 and blow out from the second air outlet 230. The ions can be negative ions, oxygen ions or water ions, etc., to optimize the hair drying effect of the hair dryer and avoid hair frizz.

[0049] The ion generator 800 can be disposed at one end of the second air duct 210 close to the second air outlet 230 to reduce the loss of ions in the second air duct 210. For example, Figure 4 as shown, taking negative ions as an example, the ion generator 800 is a negative ion release needle. The negative ion release needle is connected to the negative ion module 900 through a high-voltage wire. When the hair dryer is powered on and working, the negative ion release needle can release negatively charged ion particles, which can neutralize the positive charges in the hair, eliminate the static electricity of the hair, and make the hair smoother after blowing.

[0050] It should be noted that ions have a risk of failure when heated. In the present invention, the ion generator 800 is disposed in the second air duct 210. The air flow in the second air duct 210 is formed by natural wind and has no heating effect on the ions. Moreover, since the air flows blown out from the first air duct 110 and the second air duct 210 have obvious regional boundaries, the ions are less affected by the hot air in the first air duct 110, and the failure probability of the ions can be reduced. In addition, since the first air duct 110 is the active air duct and the second air duct 210 is the passive air duct, the air flow velocity in the second air duct 210 is smaller than that in the first air duct 110. After flowing out from the air outlet, the air flow in the external air outlet area 240 is driven by the air flow in the central air outlet area 140. Within a certain distance (10 cm - 15 cm), the external air outlet area 240 and the central air outlet area 140 continuously maintain an obvious boundary, while ensuring that the ions can effectively act on the hair, the hair can be alternately affected by cold air and hot air.

[0051] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A hair dryer, characterized in that, Comprising: A first air duct, which is hollow inside to form a first air passage. The two ends of the first air passage are respectively a first air inlet and a first air outlet; A second air duct, along the circumferential direction of the first air duct, the second air duct surrounds the outside of the first air duct. A second air passage is formed between the first air duct and the second air duct. The two ends of the second air passage are respectively a second air inlet and a second air outlet; A flow guiding member, which is accommodated inside the first air passage and close to the first air inlet. The flow guiding member is used to generate an air flow so that air enters from the first air inlet and the second air inlet and blows out from the first air outlet and the second air outlet; A heating member, which is accommodated inside the first air passage. The heating member is used to heat the air flow inside the first air passage; A driving member arranged inside the first air passage, the driving member is connected to the flow guiding member and used to drive the flow guiding member to rotate; The first air duct has a diversion port, and the diversion port communicates with the first air passage and the second air passage; One end of the first air duct close to the first air inlet protrudes relative to the end face of the second air duct to form a protruding section. The flow guiding member is located at one end of the first air passage close to the protruding section, so that the flow guiding member is closer to the first air inlet than the second air inlet.

2. The hair dryer according to claim 1, characterized in that, A plurality of the diversion ports are arranged at intervals along the axial direction of the first air duct.

3. The hair dryer according to claim 1, characterized in that, The first air duct is provided with a first diversion wall and a second diversion wall arranged oppositely. The first diversion wall is located on the side of the second diversion wall close to the flow guiding member. The first diversion wall bends towards the outside of the first air duct, and the second diversion wall bends towards the inside of the first air duct. The gap between the first diversion wall and the second diversion wall forms the diversion port.

4. The hair dryer according to claim 3, characterized in that, Along the radial direction of the first air duct, there is a gap between the end face of the first diversion wall and the end face of the second diversion wall.

5. The hair dryer according to claim 1, characterized in that, Along the axial direction of the first air duct, the diversion port is located between the flow guiding member and the heating member.

6. The hair dryer according to any one of claims 1 to 5, characterized in that, It further includes an ion generator, and the ion generator is accommodated inside the second air passage. The ion generator is used to release ions.

7. The hair dryer according to any one of claims 1 to 5, characterized in that, It further includes a filter screen, and the filter screen is connected to the end faces of the first air duct and the second air duct and covers the first air inlet and the second air inlet.

8. The hair dryer according to any one of claims 1 to 5, characterized in that, It further includes a support member, and the support member is accommodated inside the second air passage. The two ends of the support member are respectively connected to the first air duct and the second air duct.

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