Air outlet structure of blower and blower

Abstract

The utility model discloses a blower air outlet structure and a blower, comprising: an upper shell, the center area of the end portion of which is recessed towards one side to form an air guide portion; the lower shell is connected with the upper shell, an axial airflow channel is formed between the lower shell and the upper shell, and an air guide groove is formed in the area, opposite to the air guide part, of the lower shell; a part of area of the air diffusion part penetrates through the air guide groove and then is connected with the air guide part, through the structural design of the air guide part, the air guide groove and the air diffusion part, axial circulation of air flow is gradually converted into longitudinal circulation, the streamline air diffusion part structure can guide the air flow to flow out smoothly, energy loss is reduced, compared with a common air blower, a hammer head is omitted, and the air blower is convenient to use. The hair dryer is more compact in overall design, more comfortable in use, free of fatigue after long-time use and convenient to store and carry, the air outlet structure of the hair dryer is directly connected with the main body of the hair dryer, the air inducing path is prolonged, the utilization rate of the air speed and the air pressure is increased, and the hair drying efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of hair dryer technology, and in particular to a hair dryer air outlet structure. Background Technology

[0002] Hair dryers are a common household appliance in modern life, mainly used to dry hair or heat and dry objects. They use a built-in motor to drive the fan blades to rotate, generating a high-speed airflow, and use heating elements (such as heating wires) to heat the airflow, thereby achieving the functions of drying or styling.

[0003] Chinese Patent Publication No. CN211910796U discloses a hair dryer, which includes a body and a first fluid channel disposed within the body. The body has a fluid outlet and a first fluid inlet connected to the first fluid channel. The body contains a first direct drive motor composed of at least a stator and a mover. The stator of the first direct drive motor is connected to the body. The mover has a ring structure and rotatably engages within the stator. The mover has several blades that rotate with it, arranged sequentially along the circumference of the mover to form a drive impeller. The fluid in the first fluid channel flows along the path defined by the first fluid channel under the drive of the drive impeller. This invention achieves the advantage of a smaller size while maintaining the same airflow volume. However, this invention is a hammer-type hair dryer with a forward-positioned center of gravity, which can lead to hand fatigue during prolonged use and is not conducive to portability. Furthermore, the short airflow path of the hammer-type hair dryer results in lower utilization of wind speed and pressure, leading to slower hair drying. Utility Model Content

[0004] The purpose of this utility model is to provide a hair dryer outlet structure and a hair dryer to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following solution to the aforementioned technical problems:

[0006] A hair dryer outlet structure includes:

[0007] The upper shell has a central area at its end recessed to one side to form an air guide section;

[0008] A lower shell, connected to the upper shell and forming an axial airflow channel between them, wherein the area of ​​the lower shell opposite the air guide section is provided with an air guide groove; and

[0009] The air expansion section has a portion of its area passing through the air guide groove and connecting to the air guide section, so that a longitudinal airflow channel connected to the axial airflow channel is formed between the air guide groove and the air expansion section. Furthermore, an air outlet unit connected to the longitudinal airflow channel is provided in the area of ​​the air expansion section that does not pass through the air guide groove.

[0010] As a further embodiment of this utility model, the lower shell is sandwiched between the upper shell and the area of ​​the air expansion section that does not pass through the air guide groove.

[0011] As a further embodiment of this utility model, the upper shell end gradually narrows along the airflow direction in the axial airflow channel, and the area of ​​the air expansion section passing through the air guide groove gradually widens along the airflow direction in the longitudinal airflow channel.

[0012] As a further embodiment of this utility model, the air outlet unit is composed of multiple air outlets, and the air outlets are distributed at intervals around the area where the air expansion section passes through the air guide groove.

[0013] As a further embodiment of this utility model, a first sealing groove for accommodating the first sealing ring is provided on the end face of the upper shell facing the lower shell.

[0014] As a further embodiment of this utility model, the outer edge of the first sealing groove is provided with a plurality of first locking edges, each of which is provided with a locking groove. The outer edge of the lower shell adjacent to the upper shell is provided with a locking block corresponding to the first locking edge, and the side of the locking block facing the first locking edge is provided with a sloping surface.

[0015] As a further embodiment of this utility model, a second sealing groove for accommodating the second sealing ring is provided on the end face of the lower shell facing the area of ​​the air expansion section that does not pass through the air guide groove.

[0016] As a further embodiment of this utility model, a second retaining edge is provided on the outer edge of the second sealing groove, and the inner diameter structure of the second retaining edge is adapted to the area of ​​the air expansion section that does not pass through the air guide groove.

[0017] As a further embodiment of this utility model, at least two cylindrical tubes with internal thread structures are provided in the middle of the air guide section, and a positioning hole for bolts to pass through is provided on the end face of the air expansion section that fits with the air guide section, and the threaded end of the bolt is adapted to the internal thread structure of the cylindrical tube.

[0018] In addition, this utility model also provides a hair dryer, including the aforementioned hair dryer outlet structure.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This utility model discloses a hair dryer outlet structure and hair dryer. Through the structural design of the air guide, air guide groove and air expansion section, the airflow gradually changes from axial flow to longitudinal flow. The streamlined air expansion section structure can guide the airflow to flow out smoothly, reducing energy loss. Compared with ordinary hair dryers, it does not have a "hammer head". The overall design is more compact, more comfortable to use, and will not cause fatigue even after long-term use. It is also easy to store and carry. In addition, the hair dryer outlet structure is directly connected to the main body of the hair dryer, which extends the air intake path, improves the utilization rate of wind speed and wind pressure, and improves the efficiency of drying hair. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a structural exploded view of the air outlet structure of a hair dryer according to the present invention;

[0023] Figure 2 This is a schematic diagram of the air outlet structure of a hair dryer and the assembly of the lower shell and the air diffuser of the hair dryer according to the present invention.

[0024] Figure 3 This is a three-dimensional structural diagram of the air outlet structure and the upper shell of a hair dryer according to the present invention.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Upper shell; 11. Air guide section; 111. Column; 12. First sealing groove; 13. First retaining edge; 131. Retaining groove; 2. Lower shell; 21. Air guide groove; 22. Retaining block; 23. Second sealing groove; 24. Second retaining edge; 3. Air expansion section; 31. Air outlet unit; 32. Positioning hole; 33. Bolt. Detailed Implementation

[0027] The present invention will be further described below with reference to the embodiments.

[0028] Please see Figure 1-3This utility model provides a hair dryer outlet structure, including an upper shell 1, a lower shell 2, and an air diffuser 3. The upper shell 1 has a central area recessed to one side to form an air guide 11. The lower shell 2 is connected to the upper shell 1, and an axial airflow channel is formed between them. An air guide groove 21 is provided in the area of ​​the lower shell 2 opposite to the air guide 11. The end face of the air guide 11 away from the upper shell 1 is adapted to the air diffuser 3, allowing them to form a streamlined combination structure, which helps reduce wind resistance. At least a fan blade driven by a high-speed motor and a heating element are installed in the axial airflow channel. Furthermore, a negative ion generator can also be installed in the axial airflow channel, and an air inlet is provided at the end of the axial airflow channel. A filter or grille structure can be installed at the air inlet; a portion of the air expansion section 3 passes through the air guide groove 21 and connects to the air guide section 11, so that a longitudinal airflow channel connected to the axial airflow channel is formed between the air guide groove 21 and the air expansion section 3. An air outlet unit 31 connected to the longitudinal airflow channel is provided in the area of ​​the air expansion section 3 that does not pass through the air guide groove 21. During use, the high-speed motor drives the fan blades to generate airflow, which enters the air outlet structure of the hair dryer along the axial airflow channel. Under the guidance of the streamlined structure of the air expansion section 3, the airflow gradually changes from axial to longitudinal flow. Compared with ordinary hair dryers, it eliminates the "hammer head," making it a more convenient and comfortable straight-type hair dryer to hold.

[0029] Furthermore, the lower shell 2 is sandwiched between the upper shell 1 and the area of ​​the air expansion section 3 that does not pass through the air guide groove 21. A part of the air expansion section 3 passes through the air guide groove 21 and is connected to the air guide section 11 of the upper shell 1, while the other part of the area that does not pass through the air guide groove 21 is in contact with the lower shell 2. This way, the lower shell 2 is sandwiched between the area of ​​the air expansion section 3 that does not pass through the air guide groove 21 and the upper shell 1, which simplifies the connection between the upper shell 1, the lower shell 2 and the air expansion section 3, and is crucial for ensuring the sealing of the joints of the three.

[0030] Furthermore, a first sealing groove 12 for accommodating the first sealing ring is provided on the side end face of the upper shell 1 facing the lower shell 2. The first sealing ring is an elastic material, usually made of rubber or silicone, used to fill the tiny gap between the upper shell 1 and the lower shell 2 to prevent airflow leakage.

[0031] Furthermore, the outer edge of the first sealing groove 12 is provided with a plurality of first retaining edges 13, each of which is provided with a retaining groove 131. The outer edge of the lower shell 2 adjacent to the upper shell 1 is provided with a retaining block 22 corresponding to the first retaining edge 13, and the retaining block 22 is provided with a sloping surface on the side facing the first retaining edge 13. The outer edge of the lower shell 2 is provided with a protruding edge, and a corresponding clearance groove is provided at the position corresponding to the retaining block 22. The width of the clearance groove is the same as the width of the first retaining edge 13, which is used to guide the lower shell 2 and the upper shell 1 to be correctly aligned and fitted. During the alignment process, the first retaining edge 13 squeezes the sloping surface, causing the first retaining edge 13 to undergo great deformation until the first retaining edge 13 detaches from the sloping surface. When the retaining block 22 corresponds to the retaining groove 131, the retaining block 22 is embedded in the retaining groove 131, which can prevent the lower shell 2 from separating from the upper shell 1.

[0032] Furthermore, a second sealing groove 23 is provided on the end face of the lower shell 2 facing the area of ​​the air expansion section 3 that does not pass through the air guide groove 21, for accommodating the second sealing ring. The second sealing ring is an elastic material, usually made of rubber or silicone, used to fill the tiny gap between the lower shell 2 and the air expansion section 3 to prevent airflow leakage.

[0033] Furthermore, a second retaining edge 24 is provided on the outer edge of the second sealing groove 23. The inner diameter structure of the second retaining edge 24 is adapted to the area of ​​the air expansion section 3 that does not pass through the air guide groove 21. The second retaining edge 24 and the area of ​​the air expansion section 3 that does not pass through the air guide groove 21 are aligned and inserted to ensure that the two are correctly aligned and installed. Moreover, the tight fit between the second retaining edge 24 and the air expansion section 3 can enhance the sealing effect and prevent airflow from leaking from the gap between the air expansion section 3 and the lower shell 2.

[0034] Furthermore, the air guide section 11 has at least two cylindrical tubes 111 with internal threads in its middle part. The end face of the air expansion section 3 that is in contact with the air guide section 11 is provided with positioning holes 32 for bolts 33 to pass through. The threaded end of the bolts 33 is adapted to the internal thread structure of the cylindrical tubes 111. The air guide section 11 has two countersunk grooves on the side facing the air expansion section 3. The air expansion section 3 is provided with corresponding positioning posts corresponding to the countersunk grooves. Positioning holes 32 are provided on the positioning posts. During installation, the positioning posts are embedded in the countersunk grooves, which can realize the correct alignment and installation of the air guide section 11 and the air expansion section 3. After the bolts 33 are screwed through the positioning holes 32 and threadedly connected to the cylindrical tubes 111, the air guide section 11 and the air expansion section 3 can be assembled into a whole structure. The reverse operation can disassemble and repair the air expansion section 3.

[0035] Furthermore, the upper shell 1 has a gradually narrowing end along the airflow direction in the axial airflow channel, and the side of the upper shell 1 facing the lower shell 2 is provided with a wind groove that allows airflow to pass through. The depth of the wind groove gradually decreases along the airflow direction in the axial airflow channel, which helps to increase the air pressure in time after some airflow overflows, so as to maintain the uniformity of the airflow from the blower.

[0036] Furthermore, the area of ​​the air expansion section 3 passing through the air guide groove 21 gradually widens along the airflow direction in the longitudinal airflow channel. Analyzing the air expansion section 3 in the axial and longitudinal directions, in the axial direction, the air expansion section 3 gradually widens, which makes the gap between the air guide groove 21 and the air expansion section 3 gradually smaller. This helps to increase the air pressure in time after some airflow overflows, so as to maintain the uniformity of the air output of the hair dryer. In the longitudinal direction, the air expansion section 3 gradually widens, which makes the gap between the air guide groove 21 and the air expansion section 3 gradually smaller. This helps to increase the air pressure, so as to ensure that the hair dryer can output high-pressure air and improve the efficiency of drying hair.

[0037] Furthermore, the air outlet unit 31 is composed of multiple air outlets, and the air outlets are distributed at intervals around the area through which the air expansion section 3 passes through the air guide groove 21. The air expansion section 3 can guide the airflow from axial flow to longitudinal flow. At the same time, the longitudinally flowing airflow is dispersed into a ring shape. The densely arranged air outlets form a ring structure to guide the dispersed airflow out of the blower, reducing the energy loss of the airflow at the air outlet.

[0038] Optionally, the air outlet is designed in a strip or arc shape to maximize airflow within a limited area and reduce uneven airflow.

[0039] In addition, this utility model also provides a hair dryer, including the aforementioned hair dryer outlet structure.

Claims

1. A hair dryer air outlet structure, characterized by, The hair dryer comprises: an upper shell (1) having a wind guide portion (11) formed by a recess in a central area of an end portion; a lower shell (2) connected to the upper shell (1) and having an axial air flow passage formed therebetween, the lower shell (2) being provided with a wind guide groove (21) in an area opposite to the wind guide portion (11); and an air diffuser (3) connected to the wind guide portion (11) after partially passing through the wind guide groove (21), so that a longitudinal air flow passage is formed between the wind guide groove (21) and the air diffuser (3) and is communicated with the axial air flow passage, and the air diffuser (3) is provided with an air outlet unit (31) communicated with the longitudinal air flow passage in an area not passing through the wind guide groove (21).

2. The air outlet structure of a hair dryer according to claim 1, characterized in that: The lower shell (2) is clamped between the upper shell (1) and the area of the air diffuser (3) not passing through the wind guide groove (21).

3. The air outlet structure of a hair dryer according to claim 1, characterized in that: The end portion of the upper shell (1) is tapered and narrowed along the direction of air flow in the axial air flow passage, and the area of the air diffuser (3) passing through the wind guide groove (21) is tapered and widened along the direction of air flow in the longitudinal air flow passage.

4. The air outlet structure of a hair dryer according to claim 1, characterized in that: The air outlet unit (31) is composed of a plurality of air outlets, and the air outlets are distributed at intervals around the area of the air diffuser (3) passing through the wind guide groove (21).

5. The air outlet structure of a hair dryer according to claim 1, characterized in that: A first sealing groove (12) for accommodating a first sealing ring is arranged on a side end face of the upper shell (1) facing the lower shell (2).

6. A hair dryer outlet structure according to claim 5, wherein: A plurality of first clamping edges (13) are arranged on the outer edge of the first sealing groove (12), each of the first clamping edges (13) is provided with a clamping groove (131), and a clamping block (22) corresponding to the first clamping edge (13) is arranged on the outer edge of the side of the lower shell (2) adjacent to the upper shell (1), and a slope surface is arranged on the side of the clamping block (22) facing the first clamping edge (13).

7. The air outlet structure of a hair dryer according to claim 1, characterized by: A second sealing groove (23) for accommodating a second sealing ring is arranged on a side end face of the lower shell (2) facing the area of the air diffuser (3) not passing through the wind guide groove (21).

8. A hair dryer outlet structure according to claim 7, wherein: A second clamping edge (24) is arranged on the outer edge of the second sealing groove (23), and the inner diameter structure of the second clamping edge (24) is matched with the area of the air diffuser (3) not passing through the wind guide groove (21).

9. The air outlet structure of a hair dryer according to claim 1, characterized by: At least two cylindrical columns (111) with internal thread structures are arranged in the middle of the wind guide portion (11), and a positioning hole (32) for a bolt (33) is arranged on the end face of the air diffuser (3) abutting the wind guide portion (11), and the threaded end of the bolt (33) is matched with the internal thread structure of the cylindrical column (111).

10. A hair dryer characterized by The hair dryer comprises the air outlet structure of any one of claims 1-9.

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