Hair drier

Abstract

The utility model discloses an air blower which comprises a machine head, a heating channel is arranged in the machine head, a dust-gas separator is arranged at the rear end of the machine head, the dust-gas separator comprises a separator shell, a gas rising pipe, a cyclone cavity and a dust collecting cavity, the gas rising pipe, the cyclone cavity and the dust collecting cavity are arranged in the separator shell and arranged from front to back, the separator shell is connected with the machine head, and a cyclone cavity is arranged in the cyclone cavity. The separator shell is provided with an air inlet communicated with the cyclone cavity, the gas rising pipe is connected with the front end of the cyclone cavity and enables the cyclone cavity to be communicated with the heating channel, the rear end of the gas rising pipe is inserted into the cyclone cavity and is closer to the rear than the air inlet, the rear end of the cyclone cavity is closed, and a dust outlet is formed in the side wall of the rear end of the cyclone cavity and enables the cyclone cavity to be communicated with the dust collecting cavity. The utility model provides an air blower, which solves the problems that the filter screen is blocked and the air inlet effect of an air inlet is influenced after the air blower is used for a long time, and improves the problem that the air inlet effect of the air inlet is influenced by accumulated dust at the air inlet by arranging a dust-air separator in a machine head of the air blower.

Description

Technical Field

[0001] This utility model relates to the field of household appliances, and in particular to a hair dryer. Background Technology

[0002] As people's quality of life continues to improve, they also have higher standards for the cleanliness of the airflow from hair dryers. As a result, hair dryers with dust filtration functions have appeared on the market.

[0003] Existing technology CN221577074U discloses "a hair dryer," specifically a hair dryer with a filter and an air inlet screen at the air inlet. The inner side of the air inlet screen has a dust removal component (which can be a brush, rubber strip, or silicone strip). By rotating the air inlet screen, the dust removal component scrapes the filter screen to clean the dust adhering to it. However, this method cannot thoroughly clean the filter screen; it only performs a simple cleaning of dust floating on its surface. Therefore, with prolonged use, the filter screen will still become clogged, leading to obstructed airflow at the air inlet. The text also mentions another method for cleaning dust on the filter screen: a circuit board is electrically connected to the fan to control the fan's forward or reverse rotation, giving the fan a forward and reverse function. When the fan reverses, the airflow in the duct flows from the air outlet to the air inlet, blowing away dust through the airflow, achieving simultaneous sweeping and blowing to clean the dust on the filter screen. However, this method also has problems. When the user reverses the fan, some dust will be blown towards the user's position and will be dispersed back into the air, which will have a bad user experience. Utility Model Content

[0004] The purpose of this invention is to provide a hair dryer that solves the problem that when a hair dryer is working, dust in the air adheres to the air inlet filter. Over time, this not only makes the filter difficult to clean but also causes blockage, affecting the air intake effect. By setting a dust-air separator inside the hair dryer head, air first enters the cyclone chamber of the dust-air separator for dust-air separation, and the dust is thrown into the dust collection chamber for collection. Then, the clean airflow is blown into the heating channel through the air riser pipe, ensuring that the blown airflow is clean and preventing dust accumulation at the air inlet from affecting the air intake effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a hair dryer, including a head and a handle, wherein a heating channel is provided inside the head, and a dust-air separator is provided at the rear end of the head. The dust-air separator includes a separator housing and a riser pipe, a cyclone cavity, and a dust collection cavity arranged from front to back within the separator housing. The separator housing is connected to the head. Multiple cyclone cavities are provided and arranged circumferentially along the separator housing. Each cyclone cavity has a cyclone chamber. The separator housing is provided with an air inlet communicating with the cyclone cavity. The riser pipe is connected to the front end of the cyclone cavity and communicates the cyclone cavity with the heating channel. The rear end of the riser pipe is inserted into the cyclone cavity and is positioned further back than the air inlet. The rear end of the cyclone cavity is closed. A dust outlet is provided on the rear side wall of the cyclone cavity, and the dust outlet communicates the cyclone cavity with the dust collection cavity.

[0006] After adopting the above technical solution, this utility model has the following advantages: The dust-air separator is set at the rear end of the machine head. The dust-air separator includes a separator housing and an air riser pipe, a cyclone chamber, and a dust collection chamber arranged from front to back inside the separator housing. This makes the dust-air separator and the air duct of the blower arranged in a "one-line" shape inside the machine head. Multiple cyclone chambers are arranged along the separator housing and distributed circumferentially. This structure reduces the size of the dust-air separator and increases the number of dust-air separators. Without affecting the dust-air separation effect, the overall appearance is more aesthetically pleasing. At the same time, the circumferential arrangement of the cyclone chambers makes the intake air more evenly distributed inside the machine head. This not only separates the dust in the airflow more efficiently, but also makes the clean airflow more even when it is blown into the hot air channel, improving the user experience. Air is drawn into the cyclone chamber through the inlet, forming a rotating airflow within the chamber. Centrifugal force throws dust against the inner wall of the cyclone chamber. A riser pipe connects to the front end of the cyclone chamber and links it to the heating channel. Clean airflow, separated from dust within the cyclone chamber, is then blown into the heating channel through the riser pipe. The rear end of the riser pipe is inserted into the cyclone chamber and positioned further back than the inlet, ensuring that only clean airflow, after thorough dust-air separation, can enter the heating channel. The dust outlet is located on the rear side wall of the cyclone chamber and connects it to the dust collection chamber. Dust thrown out of the cyclone chamber falls into the dust collection chamber through the dust outlet. Because the dust outlet is located on the side wall, it prevents dust from being carried back into the cyclone chamber by the airflow after falling out, thus achieving dust-air separation.

[0007] Furthermore, the cyclone chamber is equipped with a dust guide plate on the outer edge of the dust outlet, which extends along the tangential direction of the cyclone.

[0008] By adopting the aforementioned technical solution, the direction of the tangent of the dust guide plate and the airflow in the cyclone cavity is consistent, so that the dust falls from the dust outlet into the dust collection cavity due to inertia and is driven by the airflow in the cyclone cavity. This not only does not obstruct the original direction of airflow, but also increases the effect of centrifugal force on the dust, avoiding collisions caused by the airflow in the cyclone cavity and the dust guide plate being inconsistent in direction, which would cause the dust to remain in the cyclone cavity and affect the dust-air separation effect.

[0009] Furthermore, the dust guide plate extends radially along the separator housing, and the dust outlets of all cyclone chambers face the central area of ​​the dust collection chamber.

[0010] By adopting the aforementioned technical solution, the air guide plate extends radially along the separator housing so that the dust outlets of all cyclone chambers face the central area of ​​the integrated chamber, making the path of dust being thrown out more direct and uniform. This ensures that the dust thrown out of each cyclone chamber can be guided into the dust collection chamber, avoiding turbulence that would cause dust to re-enter the cyclone chamber, and improving the dust collection efficiency.

[0011] Furthermore, the cyclone chamber includes a front cylinder and a rear cover. The front end of the front cylinder is connected to the air riser pipe, and the rear cover is connected to the rear end of the front cylinder to form a cyclone chamber. The rear end of the rear cover is closed, the dust outlet is located on the rear side of the rear cover, and the dust guide plate is connected to the outer side of the rear cover.

[0012] Using the aforementioned technical solution, the front cylinder of the cyclone chamber is connected to the air riser, and the rear cover is connected to the front cylinder to form a cyclone chamber that communicates with the air riser. The dust outlet is located on the rear side of the rear cover, and the rear end of the rear cover is closed. This can prevent dust falling from the dust outlet from being brought back into the cyclone chamber. The air guide plate is connected to the outer side of the rear cover, specifically to the outer edge of the dust outlet, so that the direction of the air guide plate is consistent with the tangent of the airflow in the cyclone chamber. Due to inertia, the dust falls from the dust outlet into the dust collection chamber under the influence of the airflow in the cyclone chamber.

[0013] Furthermore, the separator housing is provided with a first partition that separates the dust collection chamber from the heating channel, all rear covers are connected to the first partition, and the dust guide plate is connected to the rear end face of the first partition.

[0014] By employing the aforementioned technical solution, the heating channel and dust collection chamber are separated through the connection between the rear cover and the first partition. This ensures that clean airflow separated by the cyclone chamber enters the heating channel, while dust falls into the dust collection chamber. The first partition ensures more thorough dust-air separation. The dust guide plate guides the path of the falling dust, allowing it to fall smoothly into the dust collection chamber. The dust guide plate, connected to the rear end of the first partition, further isolates the dust and air, preventing dust from re-entering the cyclone chamber. It also increases structural strength and improves service life.

[0015] Furthermore, the separator housing includes an outer shell and a rear end cover, the rear end cover being connected to the rear end of the outer shell and forming a dust collection chamber with the first partition.

[0016] Using the aforementioned technical solution, the rear cover and the first partition form a dust collection chamber, creating a relatively enclosed space. After dust falls, it can be collected and recycled, preventing dust from being blown into the air or returning to the cyclone chamber.

[0017] Furthermore, all the front cylinders are formed as one piece and connected and fixed to the outer shell, or all the front cylinders are formed as one piece with the outer shell, and the air inlet extends from the outer side wall of the outer shell to the inner side wall of the front cylinder.

[0018] Using the aforementioned technical solution, the air inlet extends from the outer wall of the outer shell to the inner wall of the front cylinder. Under this structural configuration, all front cylinders can be integrally formed and connected and fixed to the outer shell. This method makes the connection between the two more flexible, easy to disassemble, and convenient for replacement and maintenance. Alternatively, all front cylinders can be integrally formed with the outer shell. This method simplifies the assembly process, reduces the number of connection interfaces, and avoids air leakage caused by loose connections between the two.

[0019] Furthermore, the front end of the separator housing is provided with an air collecting ring, the front end of which is fixedly connected to the head. The air collecting ring is provided with an air collecting channel, and all the air risers are connected to the heating channel through the air collecting channel.

[0020] Using the aforementioned technical solution, the air collecting ring is set at the front end of the separator housing, which realizes the fixation of the separator housing and the head. The air collecting ring is equipped with an air collecting channel, which connects all the riser pipes and the heating channel. By setting the air collecting ring, the clean airflow is guided before entering the heating channel, so that the clean airflow is more uniform and orderly after entering the heating channel, thereby improving the heating efficiency of the clean airflow in the heating channel and the user experience.

[0021] Furthermore, the head unit is equipped with a bracket, which has an air inlet channel and a fan inside the air inlet channel. The rear end of the bracket extends into the separator housing, and a seal is provided at the rear end of the bracket. An air collecting ring is fitted around the outer periphery of the bracket and cooperates with the seal.

[0022] Using the aforementioned technical solution, a fan is installed inside the bracket, and an air collecting ring is fitted around the outer perimeter of the bracket so that the rear end of the bracket extends into the separator housing. The bracket fixes the fan and the dust-air separator inside the blower head, ensuring structural stability of the blower during operation. The fan actively draws air into the dust-air separator, improving airflow efficiency. A seal is installed between the rear end of the bracket and the air collecting ring to ensure a sealed connection between the air inlet channel and the air collecting channel, preventing leakage during airflow and turbulence inside the blower head that could cause airflow instability. It also ensures that the airflow flowing from the air collecting ring into the heating channel is clean airflow that has undergone dust-air separation, improving the user experience.

[0023] Furthermore, a positioning plate is provided on the outer periphery of the riser pipe. The positioning plate is connected to the front end of the cyclone cavity and closes the front end of the cyclone cavity. The air collecting ring abuts against the positioning plate to press and fix the riser pipe.

[0024] Using the aforementioned technical solution, a positioning plate is provided on the outer periphery of the air riser for connecting with the front end of the cyclone cavity, which is used to fix the air riser to the cyclone cavity. The positioning plate also seals the front end of the cyclone cavity, preventing air leakage. The air collecting ring abuts against the positioning plate, further pressing and fixing the air riser, reducing structural loosening, and improving the sealing between the air riser and the cyclone cavity. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] Figure 1 This is an explosion diagram of a hair dryer according to the present invention;

[0027] Figure 2 This is a schematic diagram of the cyclone cavity of this utility model;

[0028] Figure 3 This is a cross-sectional view of a hair dryer according to the present invention. Figure 1 ;

[0029] Figure 4 This utility model Figure 3 Enlarged view of point A in the image;

[0030] Figure 5 This is a cross-sectional view of a hair dryer according to the present invention. Figure 2 ;

[0031] Figure 6 This utility model Figure 5 Enlarged view of point B in the image;

[0032] Figure 7 This is a schematic diagram of the assembly of the riser pipe and the dust-gas separator of this utility model;

[0033] Figure 8This is a schematic diagram of another embodiment of the present invention. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0035] The terms "first," "second," etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects, not to describe a specific order or sequence. Even if "second" is used before a technical feature for distinction, it does not necessarily imply the presence of "first." It should be understood that in this utility model, "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. It should be understood that in this utility model, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, X and / or Y can represent: X alone, X and Y simultaneously, and Y alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Containing X, Y, and Z," "Containing X, Y, and Z" means that all three X, Y, and Z are included; "Containing X, Y, or Z" means that one of X, Y, and Z is included; "Containing X, Y, and / or Z" means that any one, two, or three of X, Y, and Z are included.

[0036] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0037] like Figures 1 to 4 As shown, this utility model provides a hair dryer, including a head 1 and a handle. The head 1 has a heating channel, and a dust-air separator 2 is provided at the rear end of the head 1. The dust-air separator 2 includes a separator housing 27 and an air riser pipe 21, a cyclone chamber 22, and a dust collection chamber 23 arranged from front to back within the separator housing 27. The separator housing 27 is connected to the head 1. Multiple cyclone chambers 22 are provided and arranged circumferentially along the separator housing 27. The separator housing 27 has a cyclone chamber 223 and an air inlet 24 that communicates with the cyclone chamber 223. The riser pipe 21 is connected to the front end of the cyclone chamber 22 and connects the cyclone chamber 223 to the heating channel. The rear end of the riser pipe 21 is inserted into the cyclone chamber 223 and is further back than the air inlet 24. The rear end of the cyclone chamber 22 is closed. The rear side wall of the cyclone chamber 22 has a dust outlet 221, which connects the cyclone chamber 223 to the dust collection chamber 23.

[0038] Understandably, the dust separator 2 is located at the rear end of the head unit 1. The dust separator 2 includes a separator housing 27 and an air riser 21, a cyclone chamber 22, and a dust collection chamber 23 arranged from front to back within the separator housing 27. This arrangement of the dust separator 2 and the air duct of the blower within the head unit 1 creates a "one-line" configuration. Multiple cyclone chambers 22 are arranged along the separator housing 27 and distributed circumferentially. This structure reduces the size of the dust separator 2 and increases its number, resulting in a more aesthetically pleasing overall appearance without affecting the dust separation effect. At the same time, the circumferential arrangement of the cyclone chambers 22 makes the intake air more evenly distributed within the head unit 1. This not only allows for more efficient separation of dust from the airflow but also makes the clean airflow more evenly distributed when it is blown into the hot air channel, improving the user experience. Air is drawn into the cyclone chamber 223 through the air inlet 24. Within the cyclone chamber 223, a rotating airflow is formed, which, under centrifugal force, throws dust against the inner wall of the cyclone chamber 223. The riser pipe 21 is connected to the front end of the cyclone chamber 223 and connects the cyclone chamber 223 to the heating channel. At this time, the clean airflow, after dust-air separation in the cyclone chamber 223, is blown into the heating channel through the riser pipe 21. The rear end of the riser pipe 21 is inserted into the cyclone chamber 223 and positioned further back than the air inlet 24. This ensures that only clean airflow that has undergone sufficient dust-gas separation can enter the heating channel through the riser pipe 21. The dust outlet 221 is located on the rear side wall of the cyclone chamber 22 and connects the cyclone chamber 223 and the dust collection chamber 23. The dust thrown out in the cyclone chamber 223 falls into the dust collection chamber 23 through the dust outlet 221. Since the dust outlet 221 is located on the side wall, it prevents the dust from falling from the dust outlet 221 and being carried back into the cyclone chamber 223 by the airflow, thereby achieving dust-gas separation.

[0039] It should be noted that, as Figure 7 As shown, the front end of the dust-air separator 2 is cylindrical, and the rear end is conical. The air inlet 24 is located in the cylindrical section 25 of the dust-air separator 2, and the air intake direction of the air inlet 24 is consistent with the tangential direction of the cylindrical section 25. Thus, when the fan starts working, air is drawn in from the air inlet 24 along the tangential direction of the cylindrical section 25. After the air enters the dust-air separator, it is constrained by the inner wall of the cylindrical section 25 to form a rotating airflow. During the rotation, the dust in the air has a large inertia under the action of centrifugal force and is thus thrown off. The dust separates from the airflow on the inner wall of the dust-air separator 2. Once the dust collides with the inner wall of the dust-air separator 2, it loses its inertial force. At this time, the dust slides down the cylindrical section 25 to the conical section 26 and finally falls into the dust collection chamber 23 under the guidance of the dust guide plate 222 from the dust outlet 221. At the same time, the rotating airflow gradually contracts and flows towards the center as it flows from the cylindrical section 25 to the conical section 26, forming a rotating forward inward swirling airflow. Finally, the clean airflow after dust-air separation is blown into the heating channel through the air riser 21 placed in the cylindrical section 25.

[0040] like Figure 5 and Figure 6 The image shows the location of one of the dust separators in the blower, where solid arrows indicate the direction of airflow and dashed arrows indicate the path of dust fall.

[0041] Preferred, such as Figure 2 As shown, the cyclone cavity 22 is provided with a dust guide plate 222 on the outer edge of the dust outlet 221. The dust guide plate 222 extends along the tangent of the cyclone, so that the direction of the tangent of the dust guide plate 222 is consistent with that of the airflow in the cyclone cavity 223. Due to inertia, the dust falls from the dust outlet 221 into the dust collection cavity 23 under the action of the airflow in the cyclone cavity 223. This not only does not obstruct the original direction of airflow, but also increases the effect of centrifugal force on the dust, avoiding the collision between the airflow in the cyclone cavity 223 and the dust guide plate 222 due to inconsistent directions, which would cause the dust to stagnate in the cyclone cavity 22 and affect the dust-air separation effect.

[0042] Even better, the dust guide plate 222 extends radially along the separator housing 27, and the dust outlets 221 of all cyclone chambers 223 face the central area of ​​the dust collection chamber 23, making the path of dust being thrown out more direct and uniform, ensuring that the dust thrown out of each cyclone chamber 223 can be guided to the dust collection chamber 23, avoiding turbulence that causes dust to re-enter the cyclone chamber 223, and improving the dust collection efficiency.

[0043] Optional, such as Figure 1 As shown, the cyclone chamber 22 includes a front cylinder 224 and a rear cover 225. The front end of the front cylinder 224 is connected to the air riser 21. The rear cover 225 is connected to the rear end of the front cylinder 224 to form a cyclone chamber 223. The rear end of the rear cover 225 is closed. The dust outlet 221 is located on the rear side of the rear end of the rear cover 225. The dust guide plate 222 is connected to the outer side of the rear cover 225. The front cylinder 224 of the cyclone chamber 22 is connected to the air riser 21, and the rear cover 225 is connected to the front cylinder 224 to form a connection with the air riser 21. The cyclone chamber 223 is open, and the dust outlet 221 is located on the rear side of the rear cover 225 and the rear end of the rear cover 225 is closed. This can prevent dust falling from the dust outlet 221 from being brought back into the cyclone chamber 223. The air guide plate is connected to the outer side of the rear cover 225, specifically to the outer edge of the dust outlet 221, so that the direction of the air guide plate is consistent with the tangent of the airflow in the cyclone chamber 223. Due to inertia, the dust falls from the dust outlet 221 into the dust collection chamber 23 under the action of the airflow in the cyclone chamber 223.

[0044] As described above, the separator housing 27 is equipped with a first partition 271 that separates the dust collection chamber 23 from the heating channel. All rear covers 225 are connected to the first partition 271, and a dust guide plate 222 is connected to the rear end face of the first partition 271. The connection between the rear covers 225 and the first partition 271 separates the heating channel from the dust collection chamber 23, ensuring that the clean airflow separated by the cyclone chamber 223 enters the heating channel, while dust falls into the dust collection chamber 23. The first partition 271 ensures more thorough dust-air separation. The dust guide plate 222 guides the path of the falling dust, allowing it to fall smoothly into the dust collection chamber 23. The dust guide plate 222, connected to the rear end face of the first partition 271, further isolates the dust and air, preventing dust from re-entering the cyclone chamber 223, increasing structural strength, and improving service life.

[0045] Specifically, the separator housing 27 includes an outer shell and a rear end cover 273. The rear end cover 273 is connected to the rear end of the outer shell and forms a dust collection chamber 23 with the first partition 271. The rear end cover 273 and the first partition 271 form a dust collection chamber 23, which creates a relatively closed space. After the dust falls, it can be collected and recycled to prevent the dust from being blown into the air or returning to the cyclone chamber 223.

[0046] In this embodiment, all front cylinders 224 are integrally formed with the outer shell, and the air inlet 24 extends from the outer side wall of the outer shell to the inner side wall of the front cylinder 224. This method simplifies the assembly process, reduces the number of connection interfaces, and avoids air leakage caused by loose connections between the two.

[0047] In other embodiments, all front cylinders 224 can also be integrally formed and fixed to the outer shell, which makes the connection between the two more flexible, easy to disassemble, and convenient for replacement and maintenance.

[0048] Regardless of the implementation method described above, the outer shell of the separator housing 27 and the rear end cover 273 are both designed to be detachably connected, such as by snap-fit ​​or threaded connection. This way, when the user needs to clean the dust in the dust collection chamber 23, they only need to remove the rear end cover 273 from the outer shell, which is simple, convenient and quick to operate.

[0049] The fixed connection mentioned in the above embodiments can be welding, gluing, or bolting. To increase its sealing performance, a sealing ring can also be added to the connection.

[0050] Based on the aforementioned hair dryer, such as Figures 3 to 6As shown, the front end of the separator housing 27 is provided with an air collecting ring 28, which is fixedly connected to the head unit 1. The air collecting ring 28 is provided with an air collecting channel 281, through which all the air risers 21 are connected to the heating channel. The air collecting ring 28 is located at the front end of the separator housing 27, which realizes the fixation of the separator housing 27 and the head unit 1. The air collecting ring 28 is provided with an air collecting channel 281, which connects all the air risers 21 to the heating channel. By setting the air collecting ring 28, the clean airflow is guided before entering the heating channel, so that the clean airflow is more uniform and orderly after entering the heating channel, improving the heating efficiency of the clean airflow in the heating channel and the user experience.

[0051] The blower head 1 is also equipped with a fan for actively drawing air into the dust-air separator 2. To ensure the blower maintains structural stability during operation, a bracket 11 is installed inside the blower head 1. The bracket 11 has an air inlet channel 121. The fan is placed inside the air inlet channel 121. The rear end of the bracket 11 extends into the separator housing 27. A seal 122 is provided at the rear end of the bracket 11. An air collecting ring 28 is fitted around the outer periphery of the bracket 11 and cooperates with the seal 122. The fan actively draws air into the dust-air separator 2, improving the airflow efficiency. The seal 122 is installed between the rear end of the bracket 11 and the air collecting ring 28, ensuring a sealed connection between the air inlet channel 121 and the air collecting channel 281. This prevents leakage during airflow and avoids turbulence within the blower head 1 that could cause airflow instability. It also ensures that the airflow flowing from the air collecting ring 28 into the heating channel is clean airflow that has undergone dust-air separation, improving the user experience.

[0052] The seal 122 mentioned can be a sealing ring, and the specific material of the sealing ring should be a high-temperature resistant material, such as rubber.

[0053] To further enhance the structural stability and sealing of the entire head 1, a positioning plate 211 is provided on the outer periphery of the air riser 21. The positioning plate 211 is connected to the front end of the cyclone chamber 22 and seals the front end of the cyclone chamber 223. The air collecting ring 28 abuts against the positioning plate 211 to press and fix the air riser 21. The positioning plate 211 on the outer periphery of the air riser 21 is used to connect to the front end of the cyclone chamber 22 and to fix the air riser 21 to the cyclone chamber 22. The positioning plate 211 seals the front end of the cyclone chamber 223 to prevent air leakage. The air collecting ring 28 abuts against the positioning plate 211 to further press and fix the air riser 21, reducing structural loosening and improving the sealing between the air riser 21 and the cyclone chamber 22.

[0054] The above embodiment is a preferred embodiment of this solution. Specifically, it sets up 11 dust-gas separators 2 in a circumferential combination. By reducing the size of the dust-gas separators 2 and increasing the number of dust-gas separators 2, the overall appearance is more aesthetically pleasing without affecting the dust-gas separation effect.

[0055] In other embodiments, the number of dust-gas separators 2 can be determined according to the specific application environment and specific requirements, for example, such as Figure 8 As shown, a dust-air separator 2 is provided at the rear end of the machine head 1. The number of dust-air separators can be set to a minimum of one. The straight arrows indicate the direction of airflow, and the curved arrows indicate the path of dust falling.

[0056] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. A hair dryer, comprising a head and a handle, wherein the head has a heating channel, characterized in that, The rear end of the machine head is equipped with a dust-air separator, which includes a separator housing and a riser pipe, a cyclone chamber, and a dust collection chamber arranged from front to back within the separator housing. The separator housing is connected to the machine head. Multiple cyclone chambers are arranged circumferentially within the separator housing. Each cyclone chamber contains a cyclone cavity. The separator housing is provided with an air inlet that communicates with the cyclone cavity. The riser pipe is connected to the front end of the cyclone cavity and connects the cyclone cavity to the heating channel. The rear end of the riser pipe is inserted into the cyclone cavity and is positioned further back than the air inlet. The rear end of the cyclone cavity is closed. The rear side wall of the cyclone cavity is provided with a dust outlet that connects the cyclone cavity to the dust collection chamber.

2. The hair dryer according to claim 1, characterized in that, The cyclone cavity is provided with a dust guide plate on the outer edge of the dust outlet, and the dust guide plate extends along the tangential direction of the cyclone.

3. The hair dryer according to claim 2, characterized in that, The dust guide plate extends radially along the separator housing, and the dust outlets of all cyclone chambers face the central area of ​​the dust collection chamber.

4. The hair dryer according to claim 2, characterized in that, The cyclone cavity includes a front cylinder and a rear cover. The front end of the front cylinder is connected to the air riser pipe, and the rear cover is connected to the rear end of the front cylinder to form a cyclone cavity. The rear end of the rear cover is closed, the dust outlet is located on the side of the rear end of the rear cover, and the dust guide plate is connected to the outer side of the rear cover.

5. The hair dryer according to claim 4, characterized in that, The separator housing is provided with a first partition that separates the dust collection chamber from the heating channel. All rear covers are connected to the first partition, and the dust guide plate is connected to the rear end face of the first partition.

6. The hair dryer according to claim 5, characterized in that, The separator housing includes an outer shell and a rear end cover. The rear end cover is connected to the rear end of the outer shell and forms a dust collection chamber with the first partition.

7. The hair dryer according to claim 6, characterized in that, All front cylinders are formed as one piece and connected and fixed to the outer shell, or all front cylinders are formed as one piece with the outer shell, and the air inlet extends from the outer side wall of the outer shell to the inner side wall of the front cylinder.

8. The hair dryer according to claim 1, characterized in that, The front end of the separator housing is provided with an air collecting ring, the front end of which is fixedly connected to the head. The air collecting ring is provided with an air collecting channel, and all the air risers are connected to the heating channel through the air collecting channel.

9. The hair dryer according to claim 8, characterized in that, The machine head is equipped with a bracket, which has an air inlet channel and a fan. The rear end of the bracket extends into the separator housing, and a seal is provided at the rear end of the bracket. An air collecting ring is fitted around the outer periphery of the bracket and cooperates with the seal.

10. The hair dryer according to claim 8, characterized in that, The outer periphery of the riser pipe is provided with a positioning plate, which is connected to the front end of the cyclone cavity and closes the front end of the cyclone cavity. The air collecting ring abuts against the positioning plate to press and fix the riser pipe.

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