Air outlet nozzle structure and blower

Abstract

The invention relates to the technical field of life electric appliances, and discloses an air outlet nozzle structure and a blower, the air outlet nozzle structure comprises an air outlet nozzle, the air outlet nozzle is provided with a first annular outlet and a second annular outlet which are arranged at intervals and concentrically, and the first annular outlet and the second annular outlet are arranged at intervals and have a preset distance. When the air outlet nozzle blows air, air can be blown out from the first annular outlet and the second annular outlet, the two air outlet channels are designed, and the first annular outlet and the second annular outlet are arranged in a spaced mode and have the preset distance, so that compared with the prior art, the air volume and the air speed can be effectively increased, and the rapid hair drying effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and particularly to an air outlet nozzle structure and a hair dryer. Background Art

[0002] Most hair dryers are provided with a single annular channel air outlet on the hair dryer body. The air outlet area is small, the air volume is low, the hair drying speed is low, and a longer drying time is required, which affects the user experience.

[0003] A related technology discloses a hair dryer, including: a hair dryer body and a nozzle. An air duct for air flow is formed in the hair dryer body; the nozzle is connected to the hair dryer body to block the air duct, and a plurality of annular air outlets are provided on the nozzle, and the air outlets are communicated with the air duct.

[0004] However, in this related technology, the plurality of annular air outlets are arranged adjacent to each other, which actually increases the width of the air outlet, resulting in a decrease in the air speed, and further affecting the air volume, and the fast hair drying effect cannot be achieved. Summary of the Invention

[0005] In view of this, the present invention provides an air outlet nozzle structure and a hair dryer to solve the problem that the hair dryer in the related technology cannot achieve the fast hair drying effect.

[0006] In a first aspect, the present invention provides an air outlet nozzle structure, including:

[0007] An air outlet nozzle, the air outlet nozzle has a first annular outlet and a second annular outlet that are spaced apart and concentrically arranged, and the first annular outlet and the second annular outlet are spaced apart and have a predetermined distance.

[0008] Beneficial effect: When the air outlet nozzle blows air, air will be blown out from the first annular outlet and the second annular outlet. By designing two air outlet channels, the first annular outlet and the second annular outlet are spaced apart and have a predetermined distance. Compared with the related technology, the air volume and air speed can be effectively increased, and the fast hair drying effect can be achieved.

[0009] In an optional embodiment, the inner diameter of the first annular outlet is Rb1, the outer diameter of the second annular outlet is Rd, L1 = Rb1 - Rd, and L1 ≥ 2 mm.

[0010] Beneficial effect: When the air outlet nozzle blows air, air is blown out from the first annular outlet and the second annular outlet. By designing two air outlet channels, the inner diameter of the first annular outlet is Rb1, the outer diameter of the second annular outlet is Rd, L1 = Rb1 - Rd, and L1 ≥ 2 mm, that is, the distance between the first annular outlet and the second annular outlet is greater than or equal to 2 mm. Compared with the related technology, the air volume and air speed can be effectively increased, and the fast hair drying effect can be achieved.

[0011] It has been verified that when the distance between the first annular outlet and the second annular outlet is less than 2 mm, the second annular outlet only increases the width of the first annular outlet, which will reduce the wind speed.

[0012] In an alternative embodiment, the outer diameter of the second annular outlet is Rd, the air outlet nozzle structure includes a heating element, the heating element includes a first heating wire, the first heating wire is wavy, the diameter of the circle where the outermost side of the first heating wire is located is Ra, the outer diameter of the first annular outlet is Rb, L2 = Ra - Rb, and -2 mm ≤ L2 ≤ 3 mm.

[0013] Beneficial effects: By making -2 mm ≤ Ra - Rb ≤ 3 mm, the pressure boosting effect of the air flow at the first annular outlet can be effectively improved, and the air flow loss can be reduced. It has been verified that when Ra - Rb < -2 mm, that is, the distance between the outer diameter of the first annular outlet and the circle where the outermost side of the first heating wire is located is relatively large, the hot air flow loss at the first annular outlet is relatively large, and the heat exchange efficiency is low; when Ra - Rb > 3 mm, the distance between the outer diameter of the first annular outlet and the circle where the outermost side of the first heating wire is located is relatively large, which will cause the distance between the outer diameter of the second annular outlet and the circle where the outermost side of the first heating wire is located to be even larger, so the air outlet effect of the second annular outlet will be reduced.

[0014] In an alternative embodiment, the diameter of the circle where the innermost side of the first heating wire is located is Rc, L3 = Rc - Rd, and 0 mm ≤ L3 ≤ 6 mm.

[0015] Beneficial effects: By making 0 mm ≤ Rc - Rd ≤ 6 mm, that is, the difference between the diameter of the circle where the innermost side of the first heating wire is located and the outer diameter of the second annular outlet is between 0 and 6 mm, the air outlet area can be effectively increased while the heat air flow exchange efficiency is improved.

[0016] It has been verified that when L3 is less than 0, the air outlet effect of the second annular outlet is reduced; if L3 is greater than 6 mm, the heat air flow exchange efficiency is low, affecting the blowing effect of the hair dryer.

[0017] In an alternative embodiment, the waveform height of the first heating wire is h1, and 4 mm ≤ h1 ≤ 7 mm.

[0018] Beneficial effects: The waveform height of the first heating wire is between 4 mm and 7 mm, and the heat exchange efficiency with air is high, so that hot air can be blown out from both the first annular outlet and the second annular outlet.

[0019] In an alternative embodiment, the heating element includes a cylindrical bracket, and the first heating wire is arranged close to the inner wall of the cylindrical bracket.

[0020] Beneficial effects: The setting of the cylindrical bracket facilitates the installation of the first heating wire.

[0021] In an alternative embodiment, a plurality of partition plates are arranged inside the cylindrical bracket, and a first wire groove is provided at a position where the partition plate contacts the inner wall of the cylindrical bracket, and the first heating wire is clamped in the first wire groove.

[0022] Advantageous effects: The arrangement of the partition plate facilitates the installation and fixation of the first heating wire.

[0023] In an alternative embodiment, the heating element further includes a second heating wire, which is arranged inside the first heating wire and is spaced apart from the first heating wire.

[0024] Advantageous effects: The arrangement of the first heating wire and the second heating wire can improve the heating efficiency of the air and quickly increase the hot air with a higher temperature.

[0025] In an alternative embodiment, the second heating wire is wavy, the diameter of the circle where the innermost side of the second heating wire is located is Re, L4 = Rd - Re, and 0mm ≤ L4 ≤ 6mm.

[0026] Advantageous effects: By making 0mm ≤ Rd - Re ≤ 6mm, the air outlet area can be effectively increased while the hot air flow exchange efficiency is improved.

[0027] It has been verified that when Rd - Re < 0, the air outlet effect of the second annular outlet is reduced; when Rd - Re > 6mm, the hot air flow exchange efficiency is low, affecting the hot air effect of the hair dryer.

[0028] In an alternative embodiment, the waveform height of the second heating wire is h2, and 4mm ≤ h2 ≤ 7mm.

[0029] Advantageous effects: The waveform height of the second heating wire is between 4mm and 7mm, and the heat exchange efficiency with the air is high. Cooperating with the first heating wire, hot air can be blown out from both the first annular outlet and the second annular outlet.

[0030] In an alternative embodiment, the partition plate is further provided with a second wire groove, and the second heating wire is clamped in the second wire groove.

[0031] Advantageous effects: The arrangement of the second wire groove facilitates the installation and fixation of the second heating wire.

[0032] In an alternative embodiment, the width of the first annular outlet is c1, and the width of the second annular outlet is c2, 2mm ≤ c1 ≤ 2.5mm, 2mm ≤ c2 ≤ 2.5mm.

[0033] Beneficial effects: The widths of the first annular outlet and the second annular outlet are both relatively small, which can increase the air outlet speed. The cooperation between the first annular outlet and the second annular outlet can increase the air output volume.

[0034] In an alternative embodiment, the air outlet nozzle structure further includes a barrel housing. An air outlet passage is formed inside the barrel housing. The heating element is disposed in the air outlet passage. The air outlet nozzle is connected to one end of the barrel housing.

[0035] In an alternative embodiment, the air outlet nozzle structure further includes a heating element bracket. The heating element bracket is snap-fitted inside the barrel housing. The heating element is disposed in the heating element bracket.

[0036] In a second aspect, the present invention further provides a hair dryer, including: the air outlet nozzle structure described above.

[0037] Beneficial effects: Since there is a predetermined distance between the first annular outlet and the second annular outlet of this hair dryer, compared with the related art, the air volume and air speed can be effectively increased, and the effect of quickly drying hair can be achieved. Description of the Drawings

[0038] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0039] Figure 1 It is an end view of an air outlet nozzle structure according to an embodiment of the present invention;

[0040] Figure 2 It is a cross-sectional view of an air outlet nozzle structure according to an embodiment of the present invention;

[0041] Figure 3 It is a left partial cross-sectional view of an air outlet nozzle structure according to an embodiment of the present invention;

[0042] Figure 4 For Figure 3 The enlarged view at A in

[0043] Figure 5 For Figure 2 The structural schematic diagram of the heating element in

[0044] Figure 6 For Figure 5 The left view of the heating element shown in

[0045] Figure 7 It is a cross-sectional view of another air outlet nozzle structure according to an embodiment of the present invention;

[0046] Figure 8 It is the left view of another air outlet nozzle structure of the embodiment of the present invention;

[0047] Figure 9 It is the left partial sectional view of another air outlet nozzle structure of the embodiment of the present invention;

[0048] Figure 10 is Figure 7 the structural schematic diagram of the heating element in

[0049] Figure 11 is Figure 10 the left view of the heating element shown in

[0050] Explanation of the reference numerals in the drawings:

[0051] 1. Air duct housing; 2. Heating element; 201. First heating wire; 202. Second heating wire; 203. Cylindrical bracket; 204. Partition board; 205. Cylindrical connecting part; 3. Air outlet nozzle; 301. First annular outlet; 302. Second annular outlet; 303. Annular rib; 4. Heating element bracket. Detailed implementation manners

[0052] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0053] Most hair dryers are provided with a single annular channel air outlet on the hair dryer body, with a small air outlet area, low air volume, low hair drying speed, and a longer hair drying time, which affects the user experience.

[0054] The related art discloses a hair dryer, including: a hair dryer body and an air outlet nozzle. An air duct for air flow is formed in the hair dryer body; the air outlet nozzle is connected to the hair dryer body to block the air duct, and a plurality of annular air outlets are provided on the air outlet nozzle, and the air outlets are communicated with the air duct.

[0055] However, in this related art, the plurality of annular air outlets are arranged adjacent to each other, which actually increases the width of the air outlet, resulting in a decrease in the air speed, and further affecting the air volume, and the fast hair drying effect cannot be achieved.

[0056] The following will describe the embodiments of the present invention in conjunction with Figures 1 to 11 , the embodiments of the present invention will be described.

[0057] According to an embodiment of the present invention, in a first aspect, there is provided an air outlet nozzle structure, including an air outlet nozzle 3.

[0058] The air outlet nozzle 3 has a first annular outlet 301 and a second annular outlet 302 that are spaced apart and concentrically arranged. The first annular outlet 301 and the second annular outlet 302 are spaced apart and have a predetermined distance.

[0059] In this embodiment, when the air outlet nozzle 3 blows air, the air blows out from the first annular outlet 301 and the second annular outlet 302. By designing two air outlet channels, the first annular outlet 301 and the second annular outlet 302 are spaced apart and have a predetermined distance. Compared with the related art, the air volume and air speed can be effectively increased, and the effect of quickly drying hair can be achieved.

[0060] In one embodiment, the inner diameter of the first annular outlet 301 is Rb1, the outer diameter of the second annular outlet 302 is Rd, L1 = Rb1 - Rd, and L1 ≥ 2 mm.

[0061] In this embodiment, when the air outlet nozzle 3 blows air, the air blows out from the first annular outlet 301 and the second annular outlet 302. By designing two air outlet channels, the inner diameter of the first annular outlet 301 is Rb1, the outer diameter of the second annular outlet 302 is Rd, L1 = Rb1 - Rd, and L1 ≥ 2 mm. That is, the distance between the first annular outlet 301 and the second annular outlet 302 is greater than or equal to 2 mm. Compared with the related art, the air volume and air speed can be effectively increased, and the effect of quickly drying hair can be achieved.

[0062] It has been verified that when the distance between the first annular outlet 301 and the second annular outlet 302 is less than 2 mm, the second annular outlet 302 only increases the width of the first annular outlet 301, which will reduce the air speed.

[0063] In one embodiment, as Figures 3 to 6 , the air outlet nozzle structure includes a heating element 2. The heating element 2 includes a first heating wire 201. The first heating wire 201 is wavy. The diameter of the circle where the outermost side of the first heating wire 201 is located is Ra, the outer diameter of the first annular outlet 301 is Rb, L2 = Ra - Rb, and -2 mm ≤ L2 ≤ 3 mm.

[0064] In this embodiment, by making -2 mm ≤ Ra - Rb ≤ 3 mm, the pressure boosting effect of the airflow at the first annular outlet 301 can be effectively improved, and the airflow loss can be reduced. It has been verified that when Ra - Rb < -2 mm, that is, the distance between the outer diameter of the first annular outlet 301 and the outermost circle where the first heating wire 201 is located is relatively large, the loss of hot airflow at the first annular outlet 301 is relatively large, and the heat exchange efficiency is low; when Ra - Rb > 3 mm, the distance between the outer diameter of the first annular outlet 301 and the outermost circle where the first heating wire 201 is located is relatively large, which will result in an even larger distance between the outer diameter of the second annular outlet 302 and the outermost circle where the first heating wire 201 is located. Therefore, the air outlet effect of the second annular outlet 302 will be reduced.

[0065] Specifically, in one embodiment, as Figure 3 shown, the outermost circle where the first heating wire 201 is located is outside the outer ring of the first annular outlet 301, and the innermost circle where the first heating wire 201 is located is inside the inner ring of the first annular outlet 301.

[0066] Specifically, in one embodiment, L2 = -2 mm. The pressure boosting effect of the airflow at the first annular outlet 301 can be effectively improved, and the airflow loss can be reduced.

[0067] Specifically, in one embodiment, L2 = 3 mm. The pressure boosting effect of the airflow at the first annular outlet 301 can be effectively improved, and the airflow loss can be reduced.

[0068] Specifically, in one embodiment, L2 = 0 mm. The pressure boosting effect of the airflow at the first annular outlet 301 can be effectively improved, and the airflow loss can be reduced.

[0069] In one embodiment, the diameter of the innermost circle where the first heating wire 201 is located is Rc, and L3 = Rc - Rd, 0 mm ≤ L3 ≤ 6 mm.

[0070] In this embodiment, by making 0 mm ≤ Rc - Rd ≤ 6 mm, that is, the difference between the diameter of the innermost circle where the first heating wire 201 is located and the outer diameter of the second annular outlet 302 is between 0 and 6 mm, the air outlet area can be effectively increased while the heat airflow exchange efficiency is improved.

[0071] It has been verified that when L3 is less than 0, the air outlet effect of the second annular outlet 302 is reduced; if L3 is greater than 6 mm, the heat airflow exchange efficiency is low, affecting the blowing effect of the hair dryer.

[0072] Specifically, in one embodiment, L3 = 0. The air outlet area can be effectively increased while the heat airflow exchange efficiency is improved.

[0073] Specifically, in one embodiment, L3 = 6 mm. The air outlet area can be effectively increased while the heat airflow exchange efficiency is improved.

[0074] Specifically, in one embodiment, L3 = 3 mm. While effectively increasing the air outlet area, the heat exchange efficiency of the hot air flow can be improved.

[0075] In one embodiment, the heating element 2 includes a cylindrical bracket 203, and the first heating wire 201 is disposed close to the inner wall of the cylindrical bracket 203.

[0076] In this embodiment, the setting of the cylindrical bracket 203 facilitates the installation of the first heating wire 201.

[0077] Specifically, an air duct is formed inside the cylindrical bracket 203, and the first heating wire 201 is located inside the air duct.

[0078] In an embodiment not shown in the figure, the cylindrical bracket 203 may not be provided, and the first heating wire 201 may be directly fixed inside the air duct housing 1.

[0079] In one embodiment, a plurality of partition plates 204 are provided inside the cylindrical bracket 203. A first wire groove is provided at the portion where the partition plate 204 contacts the inner wall of the cylindrical bracket 203, and the first heating wire 201 is clamped in the first wire groove.

[0080] In this embodiment, the setting of the partition plate 204 facilitates the installation and fixation of the first heating wire 201.

[0081] In an embodiment not shown in the figure, the partition plate 204 may not be provided inside the cylindrical bracket 203, and the first heating wire 201 may be directly fixed to the inner wall of the cylindrical bracket 203.

[0082] Specifically, in one embodiment, as Figure 5 and Figure 6 shown, one end of the partition plate 204 extends to the central axis of the cylindrical bracket 203, and the other end is connected to the inner wall of the cylindrical bracket 203. The space between two adjacent partition plates 204 is a fan-shaped space.

[0083] In one embodiment, the waveform height of the first heating wire 201 is h1, and 4 mm ≤ h1 ≤ 7 mm.

[0084] In this embodiment, the waveform height of the first heating wire 201 is between 4 mm and 7 mm, and the heat exchange efficiency with air is high, so that hot air can be blown out from both the first annular outlet 301 and the second annular outlet 302.

[0085] In one embodiment, the width of the first annular outlet 301 is c1, and the width of the second annular outlet 302 is c2, and 2 mm ≤ c1 ≤ 2.5 mm, 2 mm ≤ c2 ≤ 2.5 mm.

[0086] In this embodiment, the widths of the first annular outlet 301 and the second annular outlet 302 are both relatively small, which can increase the air outlet speed. The cooperation between the first annular outlet 301 and the second annular outlet 302 can increase the air output volume.

[0087] Specifically, in one embodiment, 2 mm ≤ Rb - Rb1 ≤ 2.5 mm.

[0088] Specifically, in one embodiment, the inner diameter of the second annular outlet 302 is Rd1, that is, 2 mm ≤ Rd - Rd1 ≤ 2.5 mm.

[0089] In one embodiment, the air outlet nozzle structure further includes an air duct housing 1. An air outlet channel is formed inside the air duct housing 1. A heating element 2 is arranged in the air outlet channel, and the air outlet nozzle 3 is connected to one end of the air duct housing 1.

[0090] The air outlet nozzle structure further includes a heating element bracket 4. The heating element bracket 4 is snap - connected inside the air duct housing 1, and the heating element 2 is arranged in the heating element bracket 4.

[0091] In this embodiment, during assembly, first install the first heating wire 201 into the cylindrical bracket, then assemble the cylindrical bracket and the heating element bracket 4 into one body, and then snap - connect the whole inside the air duct housing 1, which is convenient for assembly.

[0092] According to an embodiment of the present invention, in a second aspect, there is provided an air outlet nozzle structure, including an air outlet nozzle 3.

[0093] The air outlet nozzle 3 has a first annular outlet 301 and a second annular outlet 302 that are spaced apart and concentrically arranged. The first annular outlet 301 and the second annular outlet 302 are spaced apart and have a predetermined distance.

[0094] In this embodiment, when the air outlet nozzle 3 blows air, air is blown out from the first annular outlet 301 and the second annular outlet 302. By designing two air outlet channels, the first annular outlet 301 and the second annular outlet 302 are spaced apart and have a predetermined distance. Compared with the related art, the air volume and air speed can be effectively increased, and the effect of quickly drying hair can be achieved.

[0095] In one embodiment, the inner diameter of the first annular outlet 301 is Rb1, the outer diameter of the second annular outlet 302 is Rd, L1 = Rb1 - Rd, and L1 ≥ 2 mm.

[0096] In this embodiment, when the air outlet nozzle 3 blows air, air is blown out from the first annular outlet 301 and the second annular outlet 302. By designing two air outlet channels, and the inner diameter of the first annular outlet 301 is Rb1, the outer diameter of the second annular outlet 302 is Rd, L1 = Rb1 - Rd, and L1 ≥ 2 mm, that is, the distance between the first annular outlet 301 and the second annular outlet 302 is greater than or equal to 2 mm. Compared with the related art, the air volume and air speed can be effectively increased, and the effect of quickly drying hair can be achieved.

[0097] It has been verified that when the distance between the first annular outlet 301 and the second annular outlet 302 is less than 2 mm, the second annular outlet 302 only increases the width of the first annular outlet 301, which will reduce the air speed.

[0098] In one embodiment, as Figures 8 to 11 shown, the air outlet nozzle structure includes a heating element 2. The heating element 2 includes a first heating wire 201 and a second heating wire 202. The second heating wire 202 is arranged inside the first heating wire 201 and is spaced from the first heating wire 201. The first heating wire 201 is wavy, and the diameter of the circle where the outermost side of the first heating wire 201 is located is Ra, and the outer diameter of the first annular outlet 301 is Rb, L2 = Ra - Rb, -2 mm ≤ L2 ≤ 3 mm.

[0099] In this embodiment, the arrangement of the first heating wire 201 and the second heating wire 202 can improve the heating efficiency of the air and quickly increase the hot air with a higher temperature. By making -2 mm ≤ Ra - Rb ≤ 3 mm, the pressure boosting effect of the air flow at the first annular outlet 301 can be effectively improved, and the air flow loss can be reduced. It has been verified that when Ra - Rb < -2 mm, that is, the distance between the outer diameter of the first annular outlet 301 and the circle where the outermost side of the first heating wire 201 is located is relatively large, the loss of the hot air flow at the first annular outlet 301 is relatively large, and the heat exchange efficiency is low; when Ra - Rb > 3 mm, the distance between the outer diameter of the first annular outlet 301 and the circle where the outermost side of the first heating wire 201 is located is relatively large, which will cause the distance between the outer diameter of the second annular outlet 302 and the circle where the outermost side of the first heating wire 201 is located to be even larger, so the air outlet effect of the second annular outlet 302 will be reduced.

[0100] Specifically, in one embodiment, as Figure 9 shown, the circle where the outermost side of the first heating wire 201 is located is outside the outer ring of the first annular outlet 301, and the circle where the innermost side of the first heating wire 201 is located is inside the inner ring of the first annular outlet 301.

[0101] Specifically, in one embodiment, L2 = -2 mm. The pressure boosting effect of the air flow at the first annular outlet 301 can be effectively improved, and the air flow loss can be reduced.

[0102] Specifically, in one embodiment, L2 = 3 mm. This can effectively enhance the pressure boosting effect of the air flow at the first annular outlet 301 and reduce air flow loss.

[0103] Specifically, in one embodiment, L2 = 0 mm. This can effectively enhance the pressure boosting effect of the air flow at the first annular outlet 301 and reduce air flow loss.

[0104] In one embodiment, the diameter of the circle where the innermost side of the first heating wire 201 is located is Rc, and L3 = Rc - Rd, where 0 mm ≤ L3 ≤ 6 mm.

[0105] In this embodiment, by making 0 mm ≤ Rc - Rd ≤ 6 mm, that is, the difference between the diameter of the circle where the innermost side of the first heating wire 201 is located and the outer diameter of the second annular outlet 302 is between 0 - 6 mm, the air outlet area can be effectively increased while improving the hot air flow exchange efficiency.

[0106] It has been verified that when L3 is less than 0, the air outlet effect of the second annular outlet 302 is reduced; if L3 is greater than 6 mm, the hot air flow exchange efficiency is low, affecting the blowing effect of the hair dryer.

[0107] Specifically, in one embodiment, L3 = 0. This can effectively increase the air outlet area while improving the hot air flow exchange efficiency.

[0108] Specifically, in one embodiment, L3 = 6 mm. This can effectively increase the air outlet area while improving the hot air flow exchange efficiency.

[0109] Specifically, in one embodiment, L3 = 3 mm. This can effectively increase the air outlet area while improving the hot air flow exchange efficiency.

[0110] In one embodiment, the waveform height of the first heating wire 201 is h1, where 4 mm ≤ h1 ≤ 7 mm.

[0111] In this embodiment, the waveform height of the first heating wire 201 is between 4 mm and 7 mm, and the heat exchange efficiency with air is high, enabling both the first annular outlet 301 and the second annular outlet 302 to blow out hot air.

[0112] In one embodiment, the heating body 2 includes a cylindrical bracket 203, and the first heating wire 201 is disposed close to the inner wall of the cylindrical bracket 203.

[0113] In this embodiment, the setting of the cylindrical bracket 203 facilitates the installation of the first heating wire 201.

[0114] Specifically, an air duct is formed inside the cylindrical bracket 203, and the first heating wire 201 is located inside the air duct.

[0115] In an embodiment not shown in the figure, the cylindrical bracket 203 may not be provided, and the first heating wire 201 may be directly fixed inside the hair dryer housing 1.

[0116] In one embodiment, a plurality of partition plates 204 are provided inside the cylindrical bracket 203. A first wire groove is provided at the portion where the partition plate 204 contacts the inner wall of the cylindrical bracket 203, and the first heating wire 201 is clamped in the first wire groove.

[0117] In this embodiment, the arrangement of the partition plates 204 facilitates the installation and fixation of the first heating wire 201.

[0118] Specifically, in one embodiment, as Figure 10 and Figure 11 shown, a cylindrical connecting portion 205 is provided at the center of the cylindrical bracket 203. One end of the partition plate 204 is connected to the inner wall of the cylindrical bracket 203, and the other end is connected to the cylindrical connecting portion 205. In this embodiment, since there is air flow through the cylindrical connecting portion 205, in order to prevent the air from blowing out from the air outlet nozzle 3 after passing through the cylindrical connecting portion 205, a ring-shaped rib 303 is provided on the inner wall of the second annular channel. The ring-shaped rib 303 is in plug-in fit with the cylindrical connecting portion 205, so that the air outlet nozzle 3 seals the end of the cylindrical connecting portion 205.

[0119] In one embodiment, the second heating wire 202 is in a wavy shape. The diameter of the circle where the innermost side of the second heating wire 202 is located is Re, and L4 = Rd - Re, where 0 mm ≤ L4 ≤ 6 mm.

[0120] In this embodiment, by making 0 mm ≤ Rd - Re ≤ 6 mm, the air outlet area can be effectively increased while the heat flow exchange efficiency is improved.

[0121] It has been verified that when Rd - Re < 0, the air outlet effect of the second annular outlet 302 is reduced; when Rd - Re > 6 mm, the heat flow exchange efficiency is low, affecting the hot air effect of the hair dryer.

[0122] Specifically, in one embodiment, L4 = 0. The air outlet area can be effectively increased while the heat flow exchange efficiency is improved.

[0123] Specifically, in one embodiment, L4 = 6 mm. The air outlet area can be effectively increased while the heat flow exchange efficiency is improved.

[0124] Specifically, in one embodiment, L4 = 3 mm. The air outlet area can be effectively increased while the heat flow exchange efficiency is improved.

[0125] In one embodiment, the waveform height of the second heating wire 202 is h2, where 4 mm ≤ h2 ≤ 7 mm.

[0126] The waveform height of the second heating wire 202 is between 4 mm and 7 mm, with a high heat exchange efficiency with air. In cooperation with the first heating wire 201, hot air can be blown out from both the first annular outlet 301 and the second annular outlet 302.

[0127] In one embodiment, the partition 204 is further provided with a second wire groove, and the second heating wire 202 is clamped in the second wire groove.

[0128] In this embodiment, the arrangement of the second wire groove facilitates the installation and fixation of the second heating wire 202.

[0129] The width of the first annular outlet 301 is c1, and the width of the second annular outlet 302 is c2, where 2 mm ≤ c1 ≤ 2.5 mm and 2 mm ≤ c2 ≤ 2.5 mm.

[0130] In this embodiment, the widths of both the first annular outlet 301 and the second annular outlet 302 are relatively small, which can increase the air outlet speed, and the cooperation between the first annular outlet 301 and the second annular outlet 302 can increase the air output.

[0131] In one embodiment, the air outlet nozzle structure further includes an air duct housing 1. An air outlet passage is formed inside the air duct housing 1. The heating element 2 is disposed in the air outlet passage, and the air outlet nozzle 3 is connected to one end of the air duct housing 1.

[0132] In one embodiment, the air outlet nozzle structure further includes a heating element bracket 4. The heating element bracket 4 is snap - fitted inside the air duct housing 1, and the heating element 2 is disposed in the heating element bracket 4.

[0133] In this embodiment, during assembly, first install the first heating wire 201 and the second heating wire 202 into the cylindrical bracket, then assemble the cylindrical bracket and the heating element bracket 4 into one body, and then snap - fit the whole inside the air duct housing 1, which is convenient for assembly.

[0134] According to an embodiment of the present invention, in a third aspect, there is provided a hair dryer, including the above - mentioned air outlet nozzle structure.

[0135] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An air outlet nozzle structure, characterized in that, Comprising: An air outlet nozzle (3), the air outlet nozzle (3) having a first annular outlet (301) and a second annular outlet (302) which are spaced apart and concentrically arranged, the first annular outlet (301) and the second annular outlet (302) being spaced apart and having a predetermined spacing.

2. The air outlet nozzle structure according to claim 1, characterized in that The inner diameter of the first annular outlet (301) is Rb1, the outer diameter of the second annular outlet (302) is Rd, L1 = Rb1 - Rd, and L1 ≥ 2 mm.

3. The air outlet nozzle structure according to claim 1, characterized in that, The outer diameter of the second annular outlet (302) is Rd, the air outlet nozzle structure includes a heating element (2), the heating element (2) includes a first heating wire (201), the first heating wire (201) is wavy, the diameter of the circle where the outermost side of the first heating wire (201) is located is Ra, the outer diameter of the first annular outlet (301) is Rb, L2 = Ra - Rb, and -2 mm ≤ L2 ≤ 3 mm.

4. The air outlet nozzle structure according to claim 3, characterized in that, The diameter of the circle where the innermost side of the first heating wire (201) is located is Rc, L3 = Rc - Rd, and 0 mm ≤ L3 ≤ 6 mm.

5. The air outlet nozzle structure according to claim 3, characterized in that, The waveform height of the first heating wire (201) is h1, and 4 mm ≤ h1 ≤ 7 mm.

6. The air outlet nozzle structure according to any one of claims 3 to 5, characterized in that, The heating element (2) includes a cylindrical bracket (203), and the first heating wire (201) is disposed close to the inner wall of the cylindrical bracket (203).

7. The air outlet nozzle structure according to claim 6, characterized in that, A plurality of partition plates (204) are arranged in the cylindrical bracket (203), and a first wire groove is provided at the portion where the partition plate (204) contacts the inner wall of the cylindrical bracket (203), and the first heating wire (201) is clamped in the first wire groove.

8. The air outlet nozzle structure according to claim 7, wherein The heating element (2) further includes a second heating wire (202), the second heating wire (202) is disposed inside the first heating wire (201), and is spaced apart from the first heating wire (201).

9. The air outlet nozzle structure according to claim 8, characterized in that, The second heating wire (202) is wavy, the diameter of the circle where the innermost side of the second heating wire (202) is located is Re, L4 = Rd - Re, and 0 mm ≤ L4 ≤ 6 mm.

10. The air outlet nozzle structure according to claim 9, characterized in that, The waveform height of the second heating wire (202) is h2, and 4 mm ≤ h2 ≤ 7 mm.

11. The air outlet nozzle structure according to claim 8, characterized in that, The partition plate (204) is further provided with a second wire groove, and the second heating wire (202) is clamped in the second wire groove.

12. The air outlet nozzle structure according to any one of claims 1 to 5, 7 to 11, characterized in that, The width of the first annular outlet (301) is c1, the width of the second annular outlet (302) is c2, 2 mm ≤ c1 ≤ 2.5 mm, and 2 mm ≤ c2 ≤ 2.5 mm.

13. The air outlet nozzle structure according to any one of claims 3 to 5 and 7 to 11, characterized in that, The air outlet nozzle structure further includes an air duct housing (1), an air outlet passage is formed in the air duct housing (1), the heating element (2) is disposed in the air outlet passage, and the air outlet nozzle (3) is connected to one end of the air duct housing (1).

14. The air outlet nozzle structure according to claim 13, characterized in that, The air outlet nozzle structure further includes a heating element bracket (4), the heating element bracket (4) is snap-fitted in the air duct housing (1), and the heating element (2) is disposed in the heating element bracket (4).

15. A hair dryer, characterized in that, Comprising: The air outlet nozzle structure according to any one of claims 1 to 14.

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