Premodeling tuyere

Abstract

The preformed tuyere comprises an inner sleeve, a heat insulation sleeve and an outer shell sleeve which are sequentially sleeved from inside to outside, a first air channel is formed in the center of the inner sleeve, a second air channel is formed between the inner sleeve and the heat insulation sleeve, an air inlet is formed in the side face of the outer shell sleeve, and the air inlet end of the second air channel is connected with the air inlet. The air outlet end of the second air channel is located on the periphery of the first air channel, a third air channel is formed between the heat insulation sleeve and the outer shell sleeve, an outlet of the third air channel surrounds the periphery of the second air channel, and an air inlet gap is formed between the outer shell sleeve and the inner sleeve. When the pre-modeling tuyere is used, airflow enters from the air inlet end of the second air duct and is blown out from the air outlet end of the second air duct, and in the blowing-out process, airflow in the direction consistent with that of airflow blown out from the air outlet end of the second air duct is formed on the first air duct and the third air duct. And the airflow in the third air duct continuously flows to take away heat in the third air duct, so that the heat insulation effect is better, the temperature of the shell sleeve in long-term use is effectively reduced, the surface temperature of the tuyere in long-term use is further prevented from being too high, and the scalding risk is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of air nozzles, in particular to a pre-shaped air nozzle which can be spliced ​​on the air nozzle of a hair dryer or a hot air comb for hair styling. Background Art

[0002] A hair dryer or hot air comb is a common device used to dry hair or heat and style hair. Different nozzles can be connected to the air outlet to match different styling functions. Most of the existing nozzles are single-layer structures, which have poor heat insulation effect and high surface temperature. They are easy to burn the user's skin during use, posing a safety hazard.

[0003] To this end, CN214317275U discloses an anti-scalding and heat-insulating air nozzle of a hair dryer, which includes a front cover, a heat-insulating bushing and an inner sleeve, wherein the front cover is provided with a retaining ring and a main unit connecting seat connected to the main unit, the main unit connecting seat is provided with an air inlet connected to the main unit air outlet, the heat-insulating bushing is provided with heat-insulating ribs tightly matched with the front cover and a bushing air inlet connected to the air inlet, the inner sleeve is provided with air guide ribs tightly matched with the heat-insulating bushing and evenly distributing the air volume, the rear part of the inner sleeve is provided with a rear cover seat, the rear cover seat is provided with a bushing holder and a front cover holder, the heat-insulating bushing is sleeved on the inner sleeve, and the front of the heat-insulating bushing is provided with a sleeve holder. The end is pressed against the retaining ring, and its rear end is sleeved on the bushing holder, the front cover is sleeved on the heat-insulating bushing, and its rear end is sleeved on the front cover holder, and an anti-scalding and heat-insulating layer is formed between the front cover and the heat-insulating bushing through heat-insulating ribs, and an air guide channel for uniform air outlet is formed between the heat-insulating bushing and the inner sleeve through air guide ribs, the inlet of the air guide channel is connected with the bushing air inlet, and its outlet forms an air guide window for uniform air outlet. This anti-scalding and heat-insulating air nozzle reduces the temperature of the front cover by arranging a heat-insulating bushing between the front cover and the air guide channel, and then forming an anti-scalding and heat-insulating layer between the front cover and the heat-insulating bushing through heat-insulating ribs, thereby achieving the purpose of anti-scalding.

[0004] However, in actual use, if the air is blown for a long time, even with the thermal insulation sleeve and the anti-scalding insulation layer formed by the thermal insulation ribs, the temperature of the front cover surface will continue to rise to a higher temperature. Summary of the invention

[0005] The utility model aims at the deficiencies of the prior art and provides a pre-shaped air nozzle, which can further prevent the surface temperature of the air nozzle from being too high when the air nozzle is used for a long time, thereby avoiding the risk of scalding.

[0006] In order to solve the above technical problems, the utility model solves the problems through the following technical solutions: a preformed air nozzle, comprising an inner sleeve, a heat insulating sleeve and an outer sleeve which are sequentially fitted from the inside to the outside, the inner sleeve having a first air duct in the center, a second air duct formed between the inner sleeve and the heat insulating sleeve, an air inlet being arranged on the side of the outer sleeve, an air inlet end of the second air duct being connected to the air inlet, an air outlet end of the second air duct being located at the periphery of the first air duct, a third air duct being formed between the heat insulating sleeve and the outer sleeve, an outlet of the third air duct being arranged around the periphery of the second air duct, and an air inlet gap being arranged between the outer sleeve and the inner sleeve. When this pre-shaped air nozzle is in use, the air flow enters from the air inlet end of the second air duct and is blown out from the air outlet end of the second air duct. During the blowing process, air flows in the first air duct and the third air duct are formed in the same direction as the air flow blown out from the air outlet end of the second air duct, and the continuous flow of air flow in the third air duct can take away the heat in the third air duct, so that the heat insulation effect is better, and the temperature of the outer shell during long-term use is effectively reduced, which further prevents the surface temperature of the air nozzle from being too high during long-term use, thereby avoiding the risk of scalding.

[0007] In the above technical solution, preferably, the outer shell includes a front cover and a tail cover, and the tail cover is fixed to the front cover by a buckle. This structure is convenient for installing and positioning the inner sleeve and the heat insulation sleeve in the outer shell. After the inner sleeve and the heat insulation sleeve are assembled, they are installed in the front cover, and then the tail cover is connected to the front cover by a buckle to complete the assembly.

[0008] In the above technical solution, preferably, the outer wall of the heat insulation sleeve is provided with support ribs near the air outlet end of the second air duct, and the support ribs support the front cover to form the outlet of the third air duct, and the air inlet gap is formed between the tail cover and the inner sleeve. The support of the support ribs makes the outlet of the third air duct more reliable, and the support ribs also play a role in guiding the wind.

[0009] In the above technical solution, preferably, the tail cover is provided with a guide opening which gradually decreases from the outside to the inside, and the guide opening is connected to the first air duct. The guide opening allows more airflow to flow into the first air duct.

[0010] In the above technical solution, preferably, the smallest end of the guide opening matches the shape of the first air duct.

[0011] In the above technical solution, preferably, the inner sleeve and the heat insulating sleeve are fixed by a buckle. With this structure, the inner sleeve and the heat insulating sleeve can be positioned first and then assembled with the outer sleeve, which makes assembly more convenient.

[0012] In the above technical solution, preferably, the inner sleeve is provided with a plurality of arc-shaped air guides from the air inlet end to the air outlet end in the second air duct, and the plurality of arc-shaped air guides divide the second air duct into a plurality of parts. The plurality of arc-shaped air guides guide airflow so that the airflow blown out of the air outlet end of the second air duct is more uniform.

[0013] In the above technical solution, preferably, the tail of the inner sleeve is provided with an annular groove, the outer side of the annular groove is connected to the inner wall of the heat insulating sleeve, and a sealing ring is provided in the annular groove. This structure can prevent air leakage at the tail of the inner sleeve and the heat insulating sleeve.

[0014] Compared with the prior art, the utility model has the following beneficial effects: when the pre-shaped air nozzle is in use, the air flow enters from the air inlet end of the second air duct and is blown out from the air outlet end of the second air duct, and during the blowing process, air flows in the first air duct and the third air duct are formed in the same direction as the air flow blown out from the air outlet end of the second air duct, and the continuous flow of the air flow in the third air duct can take away the heat in the third air duct, so that the heat insulation effect is better, and the temperature of the outer shell during long-term use is effectively reduced, and the surface temperature of the air nozzle is further prevented from being too high during long-term use, thereby avoiding the risk of scalding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0016] Figure 2 It is a schematic diagram of the exploded structure of an embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of the longitudinal cross-sectional structure of an embodiment of the utility model.

[0018] Figure 4 It is a schematic diagram of the transverse cross-sectional structure of an embodiment of the utility model. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Figures 1 to 4A preformed air nozzle comprises an inner sleeve 1, a heat insulating sleeve 2 and an outer sleeve 3 which are sequentially fitted from the inside to the outside, the inner sleeve 1 having a first air duct 4 in the center, a second air duct 5 formed between the inner sleeve 1 and the heat insulating sleeve 2, an air inlet 6 arranged on the side of the outer sleeve 3, an air inlet end of the second air duct 5 connected to the air inlet 6, an air outlet end of the second air duct 5 located at the periphery of the first air duct 4, a third air duct 7 formed between the heat insulating sleeve 2 and the outer sleeve 3, an outlet of the third air duct 7 arranged around the periphery of the second air duct 5, an air inlet gap 8 is provided between the outer sleeve 3 and the inner sleeve 1. When this pre-shaped air nozzle is in use, the air inlet 6 of the pre-shaped air nozzle is connected to the hair dryer or the hot air comb, and the air flow enters from the air inlet end of the second air duct 5 and is blown out from the air outlet end of the second air duct 5. During the blowing process, air flows in the first air duct 4 and the third air duct 7 in the same direction as the air flow blown out from the air outlet end of the second air duct 5, and the continuous flow of the air flow in the third air duct 7 can take away the heat in the third air duct 7, thereby improving the heat insulation effect, effectively reducing the temperature of the outer shell 3 during long-term use, and further preventing the surface temperature of the air nozzle from being too high during long-term use, thereby avoiding the risk of scalding.

[0020] In this embodiment, the outer shell 3 includes a front cover 31 and a tail cover 32, and the tail cover 32 is fixed to the front cover 31 by buckles. This structure facilitates the installation and positioning of the inner shell 1 and the heat insulation sleeve 2 in the outer shell 3. After the inner shell 1 and the heat insulation sleeve 2 are assembled, they are installed in the front cover 31, and then the tail cover 32 is fixedly buckled and connected to the front cover 31 to complete the assembly.

[0021] In this embodiment, the outer wall of the heat insulation sleeve 2 is provided with a support rib 21 near the air outlet end of the second air duct 5, and the support rib 21 supports the front cover 31 to form the outlet of the third air duct 7, and an air inlet gap 8 is formed between the tail cover 32 and the inner sleeve 1. The support of the support rib 21 makes the outlet of the third air duct 7 more reliable, and the support rib 21 also plays a role in guiding the wind.

[0022] In this embodiment, a guide opening 321 which gradually decreases from the outside to the inside is provided on the tail cover 32, and the guide opening 321 is connected to the first air duct 4. The guide opening allows more air to flow into the first air duct 4.

[0023] In this embodiment, the smallest end of the guide opening 321 matches the shape of the first air duct 4 .

[0024] In this embodiment, in order to facilitate the assembly between the inner sleeve 1 and the heat insulating sleeve 2, the inner sleeve 1 and the heat insulating sleeve 2 are fixed by buckles.

[0025] In this embodiment, a plurality of arc-shaped air guides 11 are provided on the inner sleeve 1 in the second air duct 5 from the air inlet end to the air outlet end, and the plurality of arc-shaped air guides 11 divide the second air duct 5 into a plurality of parts. Specifically, five arc-shaped air guides 11 are provided on both sides of the inner sleeve 1, and the five arc-shaped air guides 11 are used to guide the air flow so that the air flow blown out of the air outlet end of the second air duct 5 is more uniform.

[0026] In this embodiment, an annular groove 12 is provided at the tail of the inner sleeve 1, the outer side of the annular groove 12 is connected to the inner wall of the heat insulation sleeve 2, and a sealing ring 13 is provided in the annular groove 12. This structure can prevent air leakage at the tail of the inner sleeve 1 and the heat insulation sleeve 2.

[0027] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A preformed air nozzle, comprising an inner sleeve (1), a heat insulating sleeve (2) and an outer sleeve (3) which are fitted in sequence from the inside to the outside, the inner sleeve (1) having a first air duct (4) at the center, a second air duct (5) formed between the inner sleeve (1) and the heat insulating sleeve (2), an air inlet (6) being arranged on the side of the outer sleeve (3), an air inlet end of the second air duct (5) being connected to the air inlet (6), and an air outlet end of the second air duct (5) being located at the periphery of the first air duct (4), characterized in that: A third air duct (7) is formed between the heat-insulating sleeve (2) and the outer sleeve (3); an outlet of the third air duct (7) is arranged around the outer periphery of the second air duct (5); and an air inlet gap (8) is provided between the outer sleeve (3) and the inner sleeve (1).

2. A pre-shaped air nozzle according to claim 1, characterized in that: The outer shell (3) comprises a front cover (31) and a rear cover (32), and the rear cover (32) is fixed to the front cover (31) by means of a buckle.

3. A pre-shaped air nozzle according to claim 2, characterized in that: The outer wall of the heat insulation sleeve (2) is provided with a support rib (21) near the air outlet end of the second air duct (5); the support rib (21) supports the front cover (31) to form an outlet of the third air duct (7); and the air inlet gap (8) is formed between the tail cover (32) and the inner sleeve (1).

4. A pre-shaped air nozzle according to claim 2, characterized in that: The tail cover (32) is provided with a guide opening (321) which gradually shrinks from the outside to the inside, and the guide opening (321) is connected to the first air duct (4).

5. A pre-shaped air nozzle according to claim 4, characterized in that: The smallest end of the guide opening (321) matches the shape of the first air duct (4).

6. A pre-shaped air nozzle according to claim 1, characterized in that: The inner sleeve (1) and the heat insulation sleeve (2) are fixed by means of buckles.

7. The pre-shaped air nozzle according to claim 1, characterized in that: A plurality of arc-shaped air guide pieces (11) are arranged on the inner sleeve (1) and located in the second air duct (5) from the air inlet end to the air outlet end, and the plurality of arc-shaped air guide pieces (11) divide the second air duct (5) into a plurality of parts.

8. The pre-shaped air nozzle according to claim 1, characterized in that: The rear portion of the inner sleeve (1) is provided with an annular groove (12), the outer side of the annular groove (12) is connected to the inner wall of the heat insulation sleeve (2), and a sealing ring (13) is provided in the annular groove (12).

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