Vertical blower

Abstract

The utility model is applicable to the technical field of hair driers, and provides a vertical hair dryer, which comprises a hair dryer head, a hair dryer head, a hair dryer head, a hair dryer head and a hair dryer head, the hair dryer head comprises a hair dryer and a hair dryer component, an air flow channel is formed in the hair dryer, an air inlet end and an air outlet end are arranged on the hair dryer, and the air flow channel is respectively communicated with the air inlet end and the air outlet end; the air blowing assembly is arranged in the air duct and located between the air inlet end and the air outlet end, and the air blowing assembly is used for enabling air to enter from the air inlet end and be exhausted from the air outlet end through the airflow channel; the supporting rod is used for supporting the blower head, and the blower head is installed on the supporting rod; the air outlet end is provided with a first noise reduction structure used for reducing noise. The air inlet end is provided with a second noise reduction structure used for reducing noise. According to the air conditioner, the noise transmitted from the air outlet end is reduced through the first noise reduction structure, the noise transmitted from the air outlet end is reduced through the second noise reduction structure, and therefore the noise reduction performance is improved. And the blower head is supported on the supporting surface through the supporting rod, so that the hands of a user are liberated.

Description

Technical Field

[0001] The utility model belongs to the technical field of hair dryers, in particular to a vertical hair dryer. Background Art

[0002] A hair dryer is a commonly used household appliance that uses a motor to generate airflow to dry and shape hair. Since the hair dryer is close to the user's head and ears when in use, if the hair dryer makes a loud noise, it will cause ear discomfort to the user.

[0003] In the related art, there are hair dryers with noise reduction function. However, the existing noise reduction hair dryers mainly reduce the noise of the motor. Although there is a certain noise reduction effect, there is still a lot of noise, and the noise reduction effect needs to be improved. Utility Model Content

[0004] In view of this, the utility model provides a vertical hair dryer to solve the problem of high noise of the hair dryer.

[0005] To solve the above problems, the technical solution of the utility model is achieved as follows:

[0006] A vertical hair dryer comprises: a hair dryer head, comprising a wind tube and a blowing assembly, an air flow channel is formed in the wind tube, an air inlet end and an air outlet end are arranged on the wind tube, and the air flow channel connects the air inlet end and the air outlet end respectively; the blowing assembly is arranged in the wind tube and located between the air inlet end and the air outlet end, the blowing assembly is used to allow air to enter from the air inlet end and be discharged from the air outlet end through the air flow channel; a support rod is used to support the hair dryer head, and the hair dryer head is installed on the support rod; wherein a first noise reduction structure for noise reduction is arranged on the air outlet end; and a second noise reduction structure for noise reduction is arranged on the air inlet end.

[0007] In some embodiments, the air duct is provided with an air outlet portion at the air outlet end, and the first noise reduction structure includes an air outlet slot provided on the air outlet portion, the width of the air outlet slot is 1.45mm-1.65mm, and the depth of the air outlet slot is 4mm-20mm; the air flow flowing out from the air outlet end is discharged through the air outlet slot.

[0008] In some embodiments, the air outlet end is provided with a plurality of air outlet portions, and each air outlet portion is provided with a plurality of air outlet slots.

[0009] In some embodiments, the second noise reduction structure includes multiple noise reduction layers arranged from the inside to the outside, each noise reduction layer includes a blocking wall for blocking the sound in the air duct from propagating outward, and the blocking wall is provided with a through portion for air flow. The air flow passes through the through portions of each noise reduction layer from the outside to the inside in turn and enters the air flow channel.

[0010] In some embodiments, two adjacent noise reduction layers abut against each other.

[0011] In some embodiments, the multiple noise reduction layers are arranged from the inside to the outside in the following order: a first noise reduction layer, provided with a first ventilation groove for forming a through portion, the first ventilation grooves are arranged in multiple rows along the first direction, and each row of first ventilation grooves is arranged in multiple rows along the second direction; a second noise reduction layer, provided with ventilation holes for forming a through portion, the ventilation holes are arranged in multiple rows along the first direction, and each row of ventilation holes is arranged in multiple rows along the second direction; a third noise reduction layer, provided with a second ventilation groove for forming a through portion, the second ventilation grooves are arranged along the second direction, and are arranged in multiple rows along the first direction; wherein external air enters the airflow channel through the second ventilation grooves, the ventilation holes and the first ventilation grooves in turn.

[0012] In some embodiments, along the axial direction of the vent holes, the projection area of ​​the blocking wall between two adjacent second vent grooves can cover the projection area of ​​at least one column of vent holes in the first direction, and can cover the projection area of ​​one column of vent holes in the second direction.

[0013] In some embodiments, along the axial direction of the vent holes, the projection area of ​​the first vent groove can cover the projection area of ​​at least one row of vent holes in the first direction, and can cover the projection areas of multiple vent holes in the second direction.

[0014] In some embodiments, the air cylinder includes a first shell and a second shell, the first noise reduction layer is disposed on the first shell, and the first shell is connected to the second shell through the first noise reduction layer.

[0015] In some embodiments, the multiple noise reduction layers also include: a fourth noise reduction layer, arranged between the second noise reduction layer and the third noise reduction layer, the fourth noise reduction layer is provided with a third ventilation groove for forming a through portion, a plurality of third ventilation grooves are arranged along the first direction, and a plurality of third ventilation grooves are arranged in each column along the second direction; wherein external air enters the airflow channel through the second ventilation groove, the third ventilation groove, the ventilation hole and the first ventilation groove in sequence.

[0016] In some embodiments, along the axial direction of the ventilation holes, the projection of the third ventilation groove can cover at least one row of ventilation holes in the first direction, and can cover a plurality of ventilation holes in the second direction.

[0017] A vertical hair dryer provided by an embodiment of the utility model includes a hair dryer head and a support rod, and the hair dryer head is connected to the support rod. The hair dryer head includes a wind tube and a blowing assembly, and the wind tube is provided with an air inlet end and an air outlet end, and a first noise reduction structure for noise reduction is provided on the air outlet end, and a second noise reduction structure for noise reduction is provided on the air inlet end. In this way, by respectively providing noise reduction structures on the air outlet end and the air inlet end, noise reduction processing can be performed at corresponding positions respectively, so that the noise transmitted from the air outlet end and the air inlet end is reduced, and then the noise at the air inlet end and the air outlet end of the vertical hair dryer is low during operation, thereby improving the comfort of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a vertical hair dryer provided by an embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of a hair dryer head provided by an embodiment of the utility model;

[0020] Figure 3 It is a cross-sectional view of the air duct provided by the embodiment of the utility model;

[0021] Figure 4 is an exploded view of a second noise reduction structure provided by an embodiment of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the first noise reduction layer provided by an embodiment of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the second noise reduction layer provided by an embodiment of the utility model;

[0024] Figure 7 It is a schematic diagram of the structure of the third noise reduction layer provided by an embodiment of the utility model;

[0025] Figure 8 It is a structural schematic diagram of the fourth noise reduction layer provided in an embodiment of the utility model.

[0026] Description of reference numerals:

[0027] 1. hair dryer head; 11. hair dryer; 111. first housing; 1111. first limiting surface; 112. second housing; 113. air outlet; 12. blowing assembly; 13. rotating shaft;

[0028] 2. Support rod; 21. Telescopic rod; 22. Base; 23. Rotating mechanism;

[0029] 3. The first noise reduction structure;

[0030] 4. Second noise reduction structure; 41. First noise reduction layer; 411. First ventilation groove; 412. First limiting protrusion; 413. Second limiting protrusion; 4131. Guide slope; 414. Threaded hole; 42. Second noise reduction layer; 421. Ventilation hole; 422. First connecting groove; 423. Second connecting groove; 424. Third connecting groove; 43. Third noise reduction layer; 431. Second ventilation groove; 432. Fourth connecting groove; 4321. Snap-in groove; 4322. Insertion groove; 44. Fourth noise reduction layer; 441. Third ventilation groove; 442. Connecting hole; 443. Fifth connecting groove; 444. Sixth connecting groove; 445. Third limiting protrusion. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] The various specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features in the utility model will not be described separately.

[0033] In the following description, the terms "first\second\..." are only used to distinguish different objects, and do not mean that the objects have the same or related points. It should be understood that the directions "above", "below", "outside" and "inside" are all directions in normal use, and the directions "left" and "right" refer to the left and right directions shown in the corresponding schematic diagrams, which may or may not be the left and right directions in normal use.

[0034] It should be noted that the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element. "Multiple" means greater than or equal to two.

[0035] like Figure 1 and Figure 2 As shown, a vertical hair dryer provided by the embodiment of the utility model includes a hair dryer head 1 and a support rod 2. The hair dryer head 1 includes a wind tube 11 and a blowing assembly 12 (refer to Figure 3), an air flow channel is formed in the wind cylinder 11, an air inlet end and an air outlet end are provided on the wind cylinder 11, and the air flow channel connects the air inlet end and the air outlet end respectively; a blowing component 12 is provided in the wind cylinder 11 and is located between the air inlet end and the air outlet end, and the blowing component 12 is used to allow air to enter from the air inlet end and be discharged from the air outlet end through the air flow channel. A first noise reduction structure 3 for noise reduction is provided on the air outlet end, and a second noise reduction structure 4 for noise reduction is provided on the air inlet end. Specifically, when the blowing component 12 is working, noise will be generated in the wind cylinder 11, and the wind cylinder 11 is connected to the outside world through the air inlet end and the air outlet end, so that the noise can be transmitted out of the wind cylinder 11 through the air inlet end and the air outlet end without hindrance. That is, the noise generated by the vertical hair dryer during operation is mainly transmitted through the air inlet end and the air outlet end. In the embodiment of the utility model, by setting the first noise reduction structure 3 at the air outlet, the air outlet can be subjected to noise reduction processing, so that the noise transmitted from the air outlet is reduced; the second noise reduction structure 4 is set at the air inlet end, and the air inlet can be subjected to noise reduction processing, so that the noise transmitted from the air inlet is reduced. The first noise reduction structure 3 and the second noise reduction structure 4 greatly reduce the noise transmitted from the air duct 11, thereby effectively achieving noise reduction.

[0036] like Figure 1 and Figure 2 As shown, the hair dryer head 1 is mounted on a support rod 2, and the support rod 2 is used to support the hair dryer head 1. The hair dryer head 1 is supported on a support surface by the support rod 2, and the user does not need to hold it with his hands when using it, which frees the user's hands and improves the convenience of use.

[0037] A vertical hair dryer provided in an embodiment of the utility model comprises a hair dryer head 1 and a support rod 2, and the hair dryer head 1 is connected to the support rod 2. The hair dryer head comprises a wind tube 11 and a blowing assembly 12, and the wind tube 11 is provided with an air inlet end and an air outlet end, and a first noise reduction structure 3 for noise reduction is provided on the air outlet end, and a second noise reduction structure 4 for noise reduction is provided on the air inlet end. In this way, by providing the first noise reduction structure 3 for reducing the noise transmission on the air outlet end, the noise transmitted from the air outlet end is reduced; by providing the second noise reduction structure 4 for reducing the noise transmission on the air inlet end, the noise transmitted from the air inlet end is reduced. The embodiment of the utility model reduces most of the noise generated by the vertical hair dryer during operation from the propagation process of the noise through the first noise reduction structure 3 and the second noise reduction structure 4, thereby achieving noise reduction of the vertical hair dryer and improving the comfort of use. In addition, the hair dryer head 1 is supported on the support surface by the support rod 2, and the user does not need to hold it by hand when using it, which frees the user's hands and improves the convenience of use.

[0038] like Figure 1 and Figure 2As shown, in some embodiments, the support rod 2 includes a telescopic rod 21, a base 22 and a rotating mechanism 23. The base 22 and the rotating mechanism 23 are respectively connected to the two ends of the telescopic rod 21, and the telescopic rod 21 is supported on the supporting surface through the base 22, and the telescopic rod 21 is used to adjust the distance between the hair dryer head 1 and the supporting surface. It can be understood that this embodiment does not limit the supporting surface of the vertical hair dryer, and the vertical hair dryer of this embodiment can be placed on a supporting surface such as a desktop, a countertop or the ground. The air cylinder 11 is also fixedly connected with a rotating shaft 13, and the rotating shaft 13 is connected to the rotating mechanism 23, so that the air cylinder 11 can be rotatably connected to the telescopic rod 21, and the air cylinder 11 is locked at a specific angle according to the use needs. In this embodiment, the height of the air outlet end is adjusted by the telescopic rod 21, and the air outlet angle of the air outlet end is adjusted by the rotating mechanism 23, so that the air outlet of the air outlet end can blow to the blowing objects at different positions, thereby making the vertical hair dryer more applicable.

[0039] In some embodiments, such as Figure 2 As shown, the air duct 11 is provided with an air outlet 113 at the air outlet end, and the first noise reduction structure 3 includes an air outlet slot provided on the air outlet portion 113, and the width of the air outlet slot is set to 1.45mm-1.65mm, and the depth of the air outlet slot is set to 4mm-20mm. Specifically, since the airflow flowing out from the air outlet end is discharged through the air outlet slot, in order to reduce the noise generated when the airflow is discharged through the air outlet slot, in the embodiment of the utility model, the width of the air outlet slot is set to 1.45mm-1.65mm, and the depth of the air outlet slot is set to 4mm-20mm. Compared with the air outlet slot in the prior art, the width of the air outlet slot is smaller and the depth is deeper, thereby forming a narrow and long air outlet channel. The air outlet slot with a smaller width makes it more difficult for the noise in the air duct 11 to enter the air outlet slot, thereby making it more difficult for the noise in the air duct to be transmitted. The deeper air outlet slot causes the noise entering the air outlet slot to be more lost after passing through the air outlet channel, thereby reducing the noise in the air duct from being discharged from the air outlet slot. Specifically, the air outlet channel is a straight channel so that less noise in the air cylinder 11 is transmitted out.

[0040] Specifically, by adopting the above design, when the width is 1.45mm, the experimentally measured noise is 76 decibels, when it is 1.55mm, the experimentally measured noise is 74 decibels, when it is 1.65mm, the experimentally measured noise is 76 decibels, when it is 1.4mm, the experimentally measured noise is 80 decibels, and when it is 1.70mm, the experimentally measured noise is 76 decibels. When the width of the air outlet slot is less than 1.45mm and greater than 1.65mm, the noise will tend to increase. The width setting of the air outlet slot in this embodiment effectively reduces the noise.

[0041] At the same time, when the depth of the air outlet slot is 4mm, the experimentally measured noise is 76 decibels, when it is 6mm, the experimentally measured noise is 74 decibels, when it is 10mm, the experimentally measured noise is 74 decibels, when it is 15mm, the experimentally measured noise is 74 decibels, and when it is 18mm, the experimentally measured noise is 74 decibels. At 20mm, the experimentally measured noise is 74 decibels, and at 3mm, the experimentally measured noise is 78 decibels, at 23mm, the experimentally measured noise is 75 decibels, and at 25mm, the experimentally measured noise is 75 decibels. When the depth of the air outlet slot is less than 4mm and greater than 20mm, the noise will tend to increase. The depth setting of the air outlet slot in this embodiment effectively reduces the noise.

[0042] In some embodiments, such as Figure 2 As shown, the air outlet end is provided with a plurality of air outlets 113. Optionally, the air outlet 113 is provided in a circular shape. A plurality of air outlet slots are provided on the edge of each air outlet 113 along the circumferential direction, and the air outlet slots on the same air outlet 113 surround the circumference of the air outlet and are arranged at intervals. The inlet of the air outlet slot is provided in the air cylinder 11 and communicated with the air flow channel, and the outlet of the air outlet slot is provided on the air outlet 113 so that the gas in the air flow channel flows out through the air outlet slot.

[0043] In some embodiments, such as Figure 3 and Figure 4 As shown, the second noise reduction structure 4 includes a plurality of noise reduction layers arranged from the inside to the outside, each noise reduction layer includes a blocking wall for blocking the sound in the wind tube 11 from propagating outward, and a through-portion for airflow is provided on the blocking wall, and the airflow enters the airflow channel from the outside to the inside through the through-portion of each noise reduction layer in sequence. Specifically, between two adjacent noise reduction layers, along the axial direction of the through-portion of the inner noise reduction layer, the projection area of ​​at least part of the through-portion of the outer noise reduction layer covers the projection area of ​​at least part of the through-portion of the inner noise reduction layer, and the projection area of ​​at least part of the blocking wall of the outer noise reduction layer covers the projection area of ​​at least part of the through-portion of the inner noise reduction layer. When the noise in the air duct 11 passes through each noise reduction layer from the inside to the outside, after the noise is transmitted to the blocking wall, the blocking wall absorbs part of the noise. Compared with the noise being able to directly propagate out of the air duct 11, this setting method sets a blocking wall for absorbing noise on the noise propagation path. Through the absorption of each blocking wall, the noise is attenuated during the transmission process, thereby reducing the noise transmission; on the other hand, the blocking wall reflects part of the noise, changing the noise transmission path. The noise propagating outward is blocked by the blocking wall and returns to the air duct 11 to reduce the noise transmission. It can be understood that the blocking wall also plays a filtering role, so that debris with larger particle size cannot pass through the noise reduction layer, thereby reducing the debris entering the air flow channel.

[0044] In some embodiments, such as Figure 3As shown, two adjacent noise reduction layers abut against each other, so that noise cannot be transmitted through the gap between the blocking walls of the two adjacent noise reduction layers.

[0045] In some other embodiments, a gap is provided between two adjacent noise reduction layers so that the propagation path of noise is extended, thereby achieving noise reduction.

[0046] In some embodiments, such as Figure 3 and Figure 4 As shown, the multiple noise reduction layers are the first noise reduction layer 41, the second noise reduction layer 42 and the third noise reduction layer 43 from the inside to the outside. The first noise reduction layer 41 is provided with a first ventilation groove 411 for forming a through portion. The first ventilation groove 411 is arranged in multiple rows along the first direction, and each row of the first ventilation grooves 411 is arranged in multiple rows along the second direction. Figure 5 The first direction is the circumferential direction of the wind tube 11. The second direction is Figure 5 The direction indicated by A2 in the figure, and the second direction is the axial direction of the wind tube 11. It can be understood that a non-zero angle is formed between the first direction and the second direction. It should be noted that the present embodiment does not limit the shape of the first ventilation groove 411, and the first ventilation groove 411 can be a rectangle, a circle or an irregular shape. The groove wall used to form the first ventilation groove 411 on the first noise reduction layer 41 can be arranged along the axial direction of the first ventilation groove 411; it can also be arranged at an angle to form an angle with the axial direction of the first ventilation groove 411. The second noise reduction layer 42 is provided with ventilation holes 421 for forming a through-portion, and the ventilation holes 421 are arranged in multiple rows along the first direction, and each row of ventilation holes 421 is arranged in multiple rows along the second direction. Specifically, the ventilation holes 421 are evenly arranged on the second noise reduction layer 42 and are covered with the second noise reduction layer 42. The third noise reduction layer 43 is provided with a second ventilation groove 431 for forming a through-portion, and the second ventilation groove 431 is arranged in the second direction, and multiple ventilation holes are arranged in the first direction. The external air enters the air flow channel through the second ventilation groove 431 , the ventilation hole 421 and the first ventilation groove 411 in sequence.

[0047] In some embodiments, such as Figure 4 , Figure 6 and Figure 7 As shown, along the axial direction of the vent holes 421, the projection area of ​​the blocking wall between two adjacent second vent grooves 431 can cover the projection area of ​​at least one column of vent holes 421 in the first direction, and can cover the projection area of ​​one column of vent holes 421 in the second direction.

[0048] In some embodiments, such as Figure 4 , Figure 5 and Figure 6As shown, along the axial direction of the vent holes 421 , the projection area of ​​the first vent groove 411 can cover the projection area of ​​at least one row of vent holes 421 in the first direction, and can cover the projection areas of multiple vent holes 421 in the second direction.

[0049] In some embodiments, such as Figure 4 As shown, the air duct 11 includes a first shell 111 and a second shell 112, and the rotating shaft 13 and the air outlet are arranged on the first shell 111. The second noise reduction structure 4 is arranged between the first shell 111 and the second shell 112. Specifically, the first noise reduction layer 41 is arranged on the first shell 111, and the first shell 111 is connected to the second shell 112 through the first noise reduction layer 41.

[0050] In some embodiments, such as Figure 3 and Figure 4 As shown, the multiple noise reduction layers also include a fourth noise reduction layer 44. The fourth noise reduction layer 44 is disposed between the second noise reduction layer 42 and the third noise reduction layer 43. The fourth noise reduction layer 44 is provided with a third ventilation groove 441 for forming a through portion. A plurality of third ventilation grooves 441 are provided along the first direction, and a plurality of third ventilation grooves 441 are provided in each row along the second direction. The external air enters the airflow channel through the second ventilation groove 431, the third ventilation groove 441, the vent hole 421 and the first ventilation groove 411 in sequence.

[0051] In some embodiments, each noise reduction layer is fixedly connected to the wind tube 11. It is understandable that the connection methods between each noise reduction layer, between the noise reduction layer and the first shell 111, and between the noise reduction layer and the second shell 112 include but are not limited to integral molding, welding, clamping, and connection through screws. Specifically, the first noise reduction layer 41 is integrally formed with the first shell 111, and the fourth noise reduction layer 44 is integrally formed with the second shell 112. The second noise reduction structure 4 also includes a connection structure for realizing the connection between each noise reduction layer, and the connection structure includes: a first limiting protrusion 412, a second limiting protrusion 413 and a threaded hole 414 provided on the first noise reduction layer 41, a first connecting groove 422, a second connecting groove 423 and a third connecting groove 424 provided on the second noise reduction layer 42, a fourth connecting groove 432 provided on the third noise reduction layer 43, and a connecting hole 442, a fifth connecting groove 443, a sixth connecting groove 444 and a third limiting protrusion 445 provided on the fourth noise reduction layer 44.

[0052] In one embodiment, if Figure 4 As shown, the second noise reduction layer 42 and the fourth noise reduction layer 44 are formed by the first limiting surface 1111 (reference Figure 5), the first limiting protrusion 412, the first connecting groove 422 and the fifth connecting groove 443 are connected to the first noise reduction layer 41. The first limiting surface 1111 is arranged on the first shell 111, and is arranged at the connection between the first shell 111 and the first noise reduction layer 41, and is arranged toward the first noise reduction layer 41. The first limiting protrusion 412 is arranged on the outer wall of the first noise reduction layer 41, and is in contact with the first limiting surface 1111. The edge of the second noise reduction layer 42 close to the first shell 111 is recessed in the direction away from the first shell 111 to form a first connecting groove 422. The edge of the fourth noise reduction layer 44 close to the first shell 111 is recessed in the direction away from the first shell 111 to form a fifth connecting groove 443. Among them, the first limiting protrusion 412 is inserted into the first connecting groove 422 and the fifth connecting groove 443, and the end surfaces of the second noise reduction layer 42 and the fourth noise reduction layer 44 close to the first shell 111 are both abutted against the first limiting surface 1111. The first connection structure limits the rotation of the second noise reduction layer 42 and the fourth noise reduction layer 44 along the first direction relative to the first noise reduction layer 41. During assembly, the first connection groove 422 and the fifth connection groove 443 are aligned with the first limiting protrusion 412, and then the second noise reduction layer 42 and the fourth noise reduction layer 44 are inserted in the direction toward the first shell 111 until the second noise reduction layer 42 and the fourth noise reduction layer 44 are both against the first limiting surface 1111, and the assembly of the first connection structure is completed.

[0053] In one embodiment, if Figure 4As shown, the second noise reduction layer 42 and the fourth noise reduction layer 44 are connected to the first noise reduction layer 41 through the second limiting protrusion 413, the second connecting groove 423 and the sixth connecting groove 444. The second limiting protrusion 413 is arranged on the outer wall of the first noise reduction layer 41 and is arranged at the edge close to the first shell 111. The second limiting protrusion 413 is provided with a guiding inclined surface 4131 facing the second shell 112. The edge of the second noise reduction layer 42 close to the first shell 111 is recessed in the direction away from the first shell 111 to form a second connecting groove 423, and the sixth connecting groove 444 is arranged on the fourth noise reduction layer 44. The second limiting protrusion 413 is clamped in the second connecting groove 423 and the sixth connecting groove 444. A plurality of second connecting structures are arranged along the first direction, and the second connecting structure limits the rotation of the second noise reduction layer 42 along the second direction. The fourth noise reduction layer 44 is fixedly connected to the first noise reduction layer 41 through each second connecting structure. During assembly, align the second connecting groove 423 and the sixth connecting groove 444 with the second limiting protrusion 413, and then insert the second noise reduction layer 42 and the fourth noise reduction layer 44 along the direction toward the first shell 111 until the second noise reduction layer 42 and the fourth noise reduction layer 44 abut against the second limiting protrusion 413. The second limiting protrusion 413 gives a resistance to the second noise reduction layer 42 and the fourth noise reduction layer 44, and the fourth noise reduction layer 44 is continuously inserted along the direction toward the first shell 111. Under the action of the guiding slope 4131, the fourth noise reduction layer 44 continues to move until the second limiting protrusion 413 is engaged in the second connecting groove 423 and the sixth connecting groove 444, completing the assembly of the second connecting structure.

[0054] In one embodiment, if Figure 4 As shown, the second noise reduction layer 42 and the fourth noise reduction layer 44 are connected to the first noise reduction layer 41 through bolts, threaded holes 414, third connecting grooves 424 and connecting holes 442. The threaded holes 414 are arranged on the first noise reduction layer 41. The third connecting grooves 424 are arranged on the second noise reduction layer 42, and the connecting holes 442 are arranged on the fourth noise reduction layer 44. Bolts are passed through the connecting holes 442, the third connecting grooves 424 and the threaded holes 414, and are connected to the threaded holes 414 by threads. The first noise reduction layer 41 is also provided with a countersunk hole connected to the threaded hole 414, and the countersunk hole is used to accommodate the head of the bolt. A plurality of third connecting structures are arranged along the first direction, and the second noise reduction layer 42 and the fourth noise reduction layer 44 are fixedly connected to the first noise reduction layer 41 through each third connecting structure.

[0055] In one embodiment, if Figure 4As shown, the fourth noise reduction layer 44 and the third noise reduction layer 43 are connected by a third limiting protrusion 445 and a fourth connecting groove 432. The third limiting protrusion 445 is arranged on the outer wall of the fourth noise reduction layer 44. The fourth connecting groove 432 is arranged on the third noise reduction layer 43, and the fourth noise reduction layer 44 includes an insertion groove 4322 arranged along the second direction and a clamping groove 4321 arranged along the first direction. The third limiting protrusion 445 is inserted into the clamping groove 4321 so that the third limiting protrusion 445 limits the movement of the third noise reduction layer 43 along the second direction. It should be noted that the third limiting protrusion 445 and the clamping groove 4321 can be an interference fit so that the third limiting protrusion 445 limits the rotation of the third noise reduction layer 43 along the first direction. During assembly, align the insertion slot 4322 of the second noise reduction layer 42 with the third limiting protrusion 445, insert the second noise reduction layer 42 in the direction toward the second noise reduction layer 42 until the third limiting protrusion 445 abuts against the snap-in slot 4321, rotate the third noise reduction layer 43 so that the third noise reduction layer 43 is snap-in in the snap-in slot 4321, and complete the assembly of the fourth connecting structure.

[0056] In some embodiments, the fourth noise reduction layer 44 is disposed on the second shell 112. It should be noted that the blocking wall of the fourth noise reduction layer 44 blocks the noise from being transmitted from the seam connecting the first noise reduction layer 41 and the second shell 112, and the blocking wall of the first noise reduction layer 41 blocks the noise from being transmitted from the seam connecting the fourth noise reduction layer 44 and the first shell 111.

[0057] In some embodiments, such as Figure 4 , Figure 6 and Figure 8 As shown, along the axial direction of the vent holes 421, the projection of the third vent groove 441 can cover at least one row of vent holes 421 in the first direction, and can cover multiple vent holes 421 in the second direction. The shape, size and arrangement of the third vent groove 441 can be the same as or different from the first vent groove 411. Along the axial direction of the vent holes 421, the third vent groove 441 can be aligned with the first vent groove 411 or not.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vertical hair dryer, characterized in that: include: A hair dryer head, comprising a wind tube and a blowing assembly, wherein an air flow channel is formed in the wind tube, an air inlet end and an air outlet end are arranged on the wind tube, and the air flow channel is connected to the air inlet end and the air outlet end respectively; the blowing assembly is arranged in the wind tube and located between the air inlet end and the air outlet end, and the blowing assembly is used to allow air to enter from the air inlet end and be discharged from the air outlet end via the air flow channel; A support rod, used to support the hair dryer head, the hair dryer head is mounted on the support rod; Wherein, a first noise reduction structure for reducing noise is arranged on the air outlet end; and a second noise reduction structure for reducing noise is arranged on the air inlet end.

2. A vertical hair dryer as claimed in claim 1, characterized in that: The air duct is provided with an air outlet portion at the air outlet end, and the first noise reduction structure includes an air outlet slot provided on the air outlet portion, the width of the air outlet slot is 1.45mm-1.65mm, and the depth of the air outlet slot is 4mm-20mm; the airflow flowing out from the air outlet end is discharged through the air outlet slot.

3. A vertical hair dryer as claimed in claim 2, characterized in that: The air outlet end is provided with a plurality of air outlet portions, and each of the air outlet portions is provided with a plurality of the air outlet slots.

4. A vertical hair dryer as claimed in claim 1, characterized in that: The second noise reduction structure includes a plurality of noise reduction layers arranged from the inside to the outside, each of the noise reduction layers includes a blocking wall for blocking the sound in the wind tube from propagating outward, and the blocking wall is provided with a through portion for air flow. The air flow passes through the through portions of each of the noise reduction layers in turn from the outside to the inside and enters the air flow channel.

5. A vertical hair dryer as claimed in claim 4, characterized in that: Two adjacent noise reduction layers abut against each other.

6. A vertical hair dryer as claimed in claim 4, characterized in that: The multiple noise reduction layers are as follows from the inside out: A first noise reduction layer is provided with first ventilation grooves for forming the through-portions, wherein the first ventilation grooves are arranged in a plurality of rows along a first direction, and each row of the first ventilation grooves is provided with a plurality of rows along a second direction; A second noise reduction layer is provided with ventilation holes for forming the through-holes, wherein the ventilation holes are arranged in a plurality of rows along the first direction, and each row of ventilation holes is provided with a plurality of ventilation holes along the second direction; a third noise reduction layer, provided with a second ventilation groove for forming the through portion, the second ventilation groove being arranged along the second direction, and a plurality of the second ventilation grooves being arranged along the first direction; Wherein, external air enters the air flow channel through the second ventilation groove, the ventilation hole and the first ventilation groove in sequence.

7. A vertical hair dryer as claimed in claim 6, characterized in that: Along the axial direction of the vent holes, the projection area of ​​the blocking wall between two adjacent second vent grooves can cover the projection area of ​​at least one column of the vent holes in the first direction, and can cover the projection area of ​​one column of the vent holes in the second direction.

8. A vertical hair dryer as claimed in claim 6, characterized in that: Along the axial direction of the vent holes, the projection area of ​​the first vent groove can cover the projection area of ​​at least one row of the vent holes in the first direction, and can cover the projection areas of a plurality of the vent holes in the second direction.

9. A vertical hair dryer as claimed in claim 6, characterized in that: The air duct includes a first shell and a second shell. The first noise reduction layer is arranged on the first shell. The first shell is connected to the second shell through the first noise reduction layer.

10. A vertical hair dryer as claimed in claim 6, characterized in that: The plurality of noise reduction layers further comprises: a fourth noise reduction layer, disposed between the second noise reduction layer and the third noise reduction layer, the fourth noise reduction layer being provided with a third ventilation groove for forming the through portion, a plurality of the third ventilation grooves being provided along the first direction, and a plurality of the third ventilation grooves being provided in each column along the second direction; Wherein, external air enters the air flow channel through the second ventilation groove, the third ventilation groove, the ventilation hole and the first ventilation groove in sequence.

11. A vertical hair dryer as claimed in claim 10, characterized in that: Along the axial direction of the vent holes, the projection of the third vent groove can cover at least one row of the vent holes in the first direction, and can cover a plurality of the vent holes in the second direction.

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