Double-layer double-air-duct self-cooling tuyere and blower

Abstract

The utility model discloses a double-layer double-air-duct self-cooling tuyere which comprises a tuyere inner shell and a tuyere outer shell, the tuyere inner shell is nested in the tuyere outer shell, a first air duct is defined by the tuyere inner shell, a gap is formed between the tuyere outer shell and the shell surface of the tuyere inner shell to form a second air duct, and the tuyere outer shell is sleeved with the tuyere outer shell. The air outlet end part of the tuyere inner shell is retracted into the air outlet end part of the tuyere outer shell, and the air inlet end part of the tuyere inner shell protrudes out of the air inlet end part of the tuyere outer shell, so that the technical problem that a user is easily scalded due to high temperature of the tuyere when the hot air function of the blower is used for a long time in the prior art is solved; the air nozzle has the beneficial effects that the air nozzle can be mounted at any time and taken after being used, hands are not scalded even if the air nozzle is taken down by using a hot air function, and the use experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hair dryer accessories and hair dryers, in particular to a double-layer double-air duct self-cooling air nozzle and a hair dryer. Background Art

[0002] The main function of the hair dryer nozzle is to assist in styling, increase wind speed and wind concentration, so as to shape the hairstyle more accurately. The design of the hair dryer nozzle, especially the flat nozzle and the wind collecting nozzle, changes the flow path of the wind, so that the wind enters the narrow air duct from the wide air duct, thereby increasing the wind speed and making the wind more concentrated. However, when the nozzle is in the hot air state of the hair dryer, the temperature of the nozzle shell will increase over time, and it is easy to burn the user when removing the nozzle after use. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies of the prior art, the utility model provides a double-layer double-air duct self-cooling nozzle and a hair dryer, which solves the technical problem in the prior art that the hair dryer has a high nozzle temperature when the hot air function is used for a long time, which can easily burn the user.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions: a double-layer double-duct self-cooling air nozzle, comprising an air nozzle inner shell and an air nozzle outer shell, the air nozzle inner shell is nested in the air nozzle outer shell, the air nozzle inner shell is enclosed to form a first air duct, and a gap between the shell surfaces of the air nozzle outer shell and the air nozzle inner shell is arranged to form a second air duct, the air outlet end of the air nozzle inner shell is retracted into the air outlet end of the air nozzle outer shell, and the air inlet end of the air nozzle inner shell protrudes from the air inlet end of the air nozzle outer shell.

[0005] Preferably, the inner shell of the air nozzle is provided with a serrated step portion at the air inlet of the second air duct.

[0006] Preferably, the sawtooth step portion is evenly arranged around the second air duct air inlet of the air nozzle inner shell.

[0007] Preferably, the sawtooth step portion has a groove and a boss, and the bottom opening size of the groove is smaller than the top opening size of the groove.

[0008] Preferably, a card slot is provided on the inner shell of the air nozzle, and a buckle is correspondingly provided on the outer shell of the air nozzle, and the inner shell of the air nozzle is connected to the outer shell of the air nozzle in a buckle-type manner.

[0009] Preferably, the inner shell of the air nozzle and the outer shell of the air nozzle are bonded together by glue.

[0010] A hair dryer comprises the double-layer double-air-duct self-cooling nozzle as described above, a main body, and a handle, wherein the main body comprises a main air inlet duct, and the main air inlet duct is connected to the first air duct.

[0011] Preferably, the nozzle inner shell of the double-layer dual-duct self-cooling nozzle is connected to the end of the main air inlet duct by a quick-release snap-on connection.

[0012] Preferably, the inner shell of the double-layer dual-duct self-cooling nozzle is connected to the main air inlet duct by magnetic attraction.

[0013] Preferably, a magnet groove is provided on the inner shell of the double-layer double-duct self-cooling nozzle, and a magnet is placed in the magnet groove.

[0014] Compared with the prior art, the beneficial effects obtained by the utility model are:

[0015] The utility model discloses a double-layer double-air-duct self-cooling air nozzle, comprising an air nozzle inner shell and an air nozzle outer shell, wherein the air nozzle inner shell is nested in the air nozzle outer shell, the air nozzle inner shell is enclosed to form a first air duct, a gap is set between the shell surface of the air nozzle outer shell and the shell surface of the air nozzle inner shell to form a second air duct, the air outlet end of the air nozzle inner shell is retracted into the air outlet end of the air nozzle outer shell, and the air inlet end of the air nozzle inner shell protrudes from the air inlet end of the air nozzle outer shell. A hair dryer using the double-layer double-air-duct self-cooling air nozzle can utilize the high flow rate of the airflow in the first air duct to Based on the principle of small square pressure, the second air duct between the inner and outer shells generates air flow, which makes the nozzle self-cooling; the inner shell is retracted into the outer shell at the end of the air outlet, which is equivalent to adding a negative pressure cavity, further increasing the negative pressure at the front end of the inner and outer shells, and facilitating the cooling air duct to actively suck air and circulate to reduce the temperature of the nozzle itself, solving the technical problem in the prior art that the nozzle temperature of the hair dryer is high and easily scalds the user when the hot air function is used for a long time. It has the characteristics of being installed when used and taken out when used. Even when the hot air function is used, the nozzle will not be hot to the touch, thereby improving the beneficial effect of user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0017] Figure 1 The utility model shows a three-dimensional schematic diagram of a double-layer double-air duct self-cooling air nozzle.

[0018] Figure 2 The utility model shows a cross-sectional view of a double-layer double-air duct self-cooling air nozzle.

[0019] Figure 3 The utility model shows a schematic diagram of an inner shell of a double-layer double-air-duct self-cooling air nozzle.

[0020] Figure 4The utility model shows a schematic diagram of a nozzle shell of a double-layer double-air-duct self-cooling nozzle.

[0021] Figure 5 The utility model is a schematic diagram of a hair dryer with a double-layer double-air-duct self-cooling air nozzle.

[0022] Figure numerals: 1-inner shell of nozzle; 11-first air duct; 12-second air duct; 13-serrated step; 131-groove; 132-boss; 14-slot; 15-magnet slot; 2-outer shell of nozzle; 21-buckle; 3-main body; 31-main air inlet duct; 4-handle. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the drawings and specific embodiments of the specification, but 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 creative work are within the scope of protection of the present invention.

[0024] Example 1

[0025] Please see attached Figure 1 To Attachment Figure 4 A double-layer double-air-duct self-cooling tuyere comprises a tuyere inner shell 1 and a tuyere outer shell 2, wherein the tuyere inner shell 1 is nested in the tuyere outer shell 2, the tuyere inner shell 1 is enclosed to form a first tuyere 11, a gap is set between the shell surfaces of the tuyere outer shell 2 and the tuyere inner shell 1 to form a second tuyere 12, an air outlet end of the tuyere inner shell 1 is retracted into the air outlet end of the tuyere outer shell 2, a length difference between the air outlet ends of the tuyere inner shell 1 and the tuyere outer shell 2 forms a negative pressure cavity, further increasing the negative pressure at the front end of the inner and outer shells so that the air flow in the second tuyere 12 reduces the tuyere temperature; an air inlet of the tuyere inner shell 1 The end protrudes from the air inlet end of the nozzle shell 2, and the length difference between the nozzle inner shell 1 and the air inlet end of the nozzle shell 2 forms an air inlet. The nozzle inner shell 1 is provided with a circle of serrated step portions 13 at the air inlet of the second air duct 12, and the serrated step portion 13 has a through groove 131, and a boss 132 is arranged adjacent to the groove 131, and the bottom opening size of the groove 131 is smaller than the top opening size of the groove 131; three card slots 14 are arranged on the nozzle inner shell 1, and three buckles 21 are correspondingly arranged on the nozzle shell 2, and the nozzle inner shell 1 is snap-connected to the nozzle shell 2.

[0026] Example 2

[0027] Please see attached Figure 1 To Attachment Figure 5A hair dryer comprises a nozzle, a main body 3 and a handle 4, wherein the main body 3 comprises a main air inlet duct 31, the nozzle comprises an inner shell 1 and an outer shell 2, the inner shell 1 is nested in the outer shell 2, the inner shell 1 is enclosed to form a first air duct 11, a gap is formed between the shell surfaces of the outer shell 2 and the inner shell 1 to form a second air duct 12, an air outlet end of the inner shell 1 is retracted into the air outlet end of the outer shell 2, a length difference between the inner shell 1 and the air outlet end of the outer shell 2 forms a negative pressure cavity, further increasing the negative pressure at the front end of the inner shell 1 and the outer shell 2 so that the air flow in the second air duct 12 reduces the nozzle temperature; the air inlet end of the inner shell 1 The part protrudes from the air inlet end of the nozzle shell 2, and the length difference between the nozzle inner shell 1 and the air inlet end of the nozzle shell 2 forms an air inlet, and the nozzle inner shell 1 is provided with a circle of serrated step portion 13 at the air inlet of the second air duct 12, and the serrated step portion 13 has a through groove 131, and a boss 132 is arranged adjacent to the groove 131, and the bottom opening size of the groove 131 is smaller than the top opening size of the groove 131; the nozzle inner shell 1 and the nozzle shell 2 are bonded by glue; the main air inlet duct 31 is connected with the first air duct 12, and the specific connection method is that the nozzle inner shell 1 and the end of the main air inlet duct 31 are connected by a snap-on connection or a magnetic connection.

[0028] Furthermore, when the nozzle inner shell 1 is connected to the end of the main air inlet duct 31 by magnetic attraction, a magnet groove 15 is provided on the nozzle inner shell 1, and a magnet is placed in the magnet groove 14.

[0029] The above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and there are many similar modifications. All modifications that can be directly derived or associated with the contents disclosed by ordinary technicians in this field should be considered as the scope of protection of the present invention.

Claims

1. A double-layer double-duct self-cooling air nozzle, characterized in that: The invention comprises an air nozzle inner shell (1) and an air nozzle outer shell (2), wherein the air nozzle inner shell (1) is nested in the air nozzle outer shell (2), the air nozzle inner shell (1) encloses a first air duct (11), a gap between the shell surfaces of the air nozzle outer shell (2) and the air nozzle inner shell (1) is arranged to form a second air duct (12), an air outlet end of the air nozzle inner shell (1) is retracted into the air outlet end of the air nozzle outer shell (2), an air inlet end of the air nozzle inner shell (1) protrudes from the air inlet end of the air nozzle outer shell (2), and the air nozzle inner shell (1) is provided with a sawtooth step portion (13) at the air inlet of the second air duct (12), the sawtooth step portion (13) having a groove (131) and a boss (132), the bottom opening size of the groove (131) being smaller than the top opening size of the groove (131).

2. The double-layer double-air duct self-cooling nozzle according to claim 1, characterized in that: The sawtooth step portion (13) is evenly arranged around the air inlet of the second air duct (12) of the nozzle inner shell (1).

3. The double-layer double-air duct self-cooling nozzle according to claim 1, characterized in that: The nozzle inner shell (1) is provided with a card slot (14), and the nozzle outer shell (2) is correspondingly provided with a card buckle (21), and the nozzle inner shell (1) and the nozzle outer shell (2) are connected in a card buckle manner.

4. The double-layer double-air duct self-cooling nozzle according to claim 1, characterized in that: The nozzle inner shell (1) and the nozzle outer shell (2) are bonded together by glue.

5. A hair dryer, characterized in that: It comprises a double-layer double-air duct self-cooling nozzle as claimed in any one of claims 1 to 4, a main body (3), and a handle (4), wherein the main body (3) comprises a main air inlet duct (31).

6. The hair dryer according to claim 5, characterized in that The nozzle inner shell (1) of the double-layer dual-duct self-cooling nozzle is connected to the end of the main air inlet duct (31) in a snap-fit ​​manner.

7. The hair dryer according to claim 5, characterized in that: The nozzle inner shell (1) of the double-layer dual-duct self-cooling nozzle is connected to the main air inlet duct (31) by magnetic attraction.

8. The hair dryer according to claim 7, characterized in that A magnet groove (15) is provided on the inner shell (1) of the double-layer double-air-duct self-cooling nozzle, and a magnet is accommodated in the magnet groove (15).

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