diffuser
By designing a specific arrangement of inner and outer protrusions in the hair dryer diffuser, the airflow distribution is optimized, solving the problems of expanding the airflow area and reducing interference in existing diffusers, and achieving faster drying and more uniform distribution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- DYSON TECH LTD
- Filing Date
- 2025-01-02
- Publication Date
- 2026-07-31
AI Technical Summary
Existing hair dryer diffusers are unable to effectively expand the airflow area, resulting in low drying efficiency and significant interference with the user's hairstyle.
Design a diffuser including an inner protrusion, a first set of outer protrusions, and a second set of outer protrusions. Through a specific arrangement and orientation design, optimize the airflow distribution, diffuse the airflow to a larger area, and reduce interference with the user's hairstyle.
It achieves faster drying efficiency and more uniform airflow distribution, reduces interference with the user's hairstyle, and improves the drying effect.
Smart Images
Figure CN122497442A_ABST
Abstract
Description
Background Technology
[0001] A diffuser is a known type of accessory used with hair dryers. A diffuser is attached to the airflow outlet of a hair dryer to reduce the speed of the airflow emitted from the hair dryer before it reaches the user's hair.
[0002] A diffuser typically includes a baffle and a grid attached to the baffle. The baffle has a tapered wall extending between an air inlet end and an air outlet end. The wall of the baffle defines a diffusion chamber in which the airflow velocity decreases as the cross-section of the chamber increases. A set of protrusions or tips typically stand upright from the grid to contact the user's hair during hair drying. Each protrusion typically has an air outlet for projecting air into the user's hair. Summary of the Invention
[0003] A diffuser for attachment to an airflow outlet end of a hair dryer, the diffuser comprising: at least one air inlet for receiving airflow from the hair dryer; a grille including a central portion and a plurality of air outlets for emitting a first portion of the airflow from the diffuser; and a plurality of protrusions erected from the grille for contacting a user's hair and for emitting a second portion of the airflow, each of the protrusions including a single air outlet; wherein the plurality of protrusions includes a set of inner protrusions arranged around the central portion of the grille, and a first set of outer protrusions arranged around the inner protrusions, and wherein the air outlets of the first set of outer protrusions are arranged to emit air away from the central portion of the grille.
[0004] The diffuser of the present invention may be advantageous because the first set of protrusions directs the airflow away from the center of the diffuser, thereby creating an expanded airflow area that allows air to reach a larger area of the user's hair, thus drying it faster while reducing disruption to the user's hairstyle.
[0005] Optionally, the diffuser may include a second set of outer protrusions arranged around the inner protrusion, each of the second set of outer protrusions including a single air outlet arranged to emit air toward the central portion of the grille. The second set of outer protrusions may advantageously provide additional airflow to the user's hair in the area between the inner protrusion and the first set of outer protrusions.
[0006] The protrusions of the first group of outer protrusions may optionally be arranged alternately with the protrusions of the second group of outer protrusions around the inner protrusions to promote a uniform distribution of the airflow direction emitted from the outer protrusions.
[0007] In one example, the first set of protrusions can be arranged in a ring array around an axis to facilitate uniform airflow distribution. In another example, the second set of protrusions can be arranged in a ring array around an axis to facilitate uniform airflow distribution. The first and second sets of protrusions can be arranged in a ring array around a common axis.
[0008] The first set of outer protrusions can be radially offset from the second set of outer protrusions relative to the common axis to provide a wider radial diffusion of airflow near the outer protrusions.
[0009] Optionally, the second set of protrusions can be spaced equidistantly from each other. Similarly, the first set of protrusions can be spaced equidistantly from each other. In each case, this promotes a uniform distribution of airflow.
[0010] In one example, the number of protrusions in the first group of protrusions can be equal to the number of protrusions in the second group of protrusions to promote a uniform distribution of airflow.
[0011] The air outlets of the protrusions in the first subgroup can be arranged to emit air from the central portion of the grille, while the air outlets of the protrusions in the second subgroup can be arranged to emit air toward the central portion of the grille to provide a wider airflow distribution near the inner protrusions.
[0012] Optionally, the protrusions of the first subgroup can be alternately arranged around the central portion of the grille with the protrusions of the second subgroup to promote uniform distribution of airflow from the inner protrusions.
[0013] The inner protrusions can optionally be arranged in a ring array and spaced equidistantly from each other to facilitate uniform airflow distribution.
[0014] In one example, the angular spacing between adjacent inner protrusions can be substantially the same as the angular spacing between adjacent protrusions in the first group of outer protrusions. The inner protrusions can be radially aligned with the first group of outer protrusions.
[0015] Optionally, the second set of outer protrusions may be angularly offset relative to the inner protrusions and the first set of outer protrusions, so that the airflow from the second set of outer protrusions does not point to any other protrusions.
[0016] The inner protrusions of the group, the first outer protrusion, and the second outer protrusion may optionally be concentric.
[0017] In one example, the first set of external protrusions can be located near the outer periphery of the diffuser to facilitate the generation of a large area of airflow from the diffuser.
[0018] The inner protrusions can be arranged around some of the air outlets of the grille, so that some of the airflow passing through the grille is surrounded by airflow from the inner protrusions, thereby providing the user with dry airflow toward the center of the diffuser.
[0019] Alternatively, the central portion of the grille may include a circular, unperforated grille area. The unperforated central portion of the grille can act as a barrier to prevent airflow from exiting the diffuser directly along the same axis as the airflow entering the diffuser. Therefore, the region of increased airflow near the central portion of the diffuser can be suppressed by controlling the direction of the airflow throughout the diffuser.
[0020] On the other hand, a kit is provided that includes a diffuser and a hair dryer according to any one of the preceding claims.
[0021] In another aspect, a hair dryer is provided that includes a diffuser according to any one of the preceding claims. Attached Figure Description
[0022] Figure 1 A perspective view of the front side of the diffuser is shown;
[0023] Figure 2 It shows Figure 1 A perspective view of the opposite side of the diffuser;
[0024] Figure 3 It shows Figure 1 A plan view of the front side of the diffuser;
[0025] Figure 4 It shows Figure 1 Exploded perspective view of the diffuser; and
[0026] Figure 5 A perspective view shows an example hair dryer to which the diffuser can be attached. Detailed Implementation
[0027] Figures 1 to 3 This is an external view of the diffuser 10. The diffuser 10 includes an air inlet 12 for receiving airflow from the airflow outlet end 102 of the blower 100 (see [link]). Figure 5 The air inlet 12 includes an opening located in the rear cover 14 of the diffuser 10.
[0028] refer to Figure 4The diffuser includes a baffle 20 with an annular inlet channel 22 for receiving airflow from an air inlet 12. A wall 24 extends between the inlet channel 22 and a baffle outlet 26, which is spaced apart from the inlet channel 22 along a central axis 21 corresponding to the longitudinal axis of the diffuser 10. The diameter of the baffle outlet 26 is larger than the diameter of the inlet channel 22, such that the cross-sectional area of the baffle 20 increases from the inlet channel 22 to the baffle outlet 26. Therefore, as the airflow moves from the inlet channel 22 to the baffle outlet 26, the cross-sectional area of the airflow increases and the airflow velocity decreases.
[0029] The grille 30 is connected to the baffle outlet 26. An airflow damper 70 is located between the grille 30 and the baffle 20. The airflow damper 70 is in the form of a disc or plate and includes a fine mesh texture suitable for reducing airflow. A sealing ring 120 is located between the grille 30 and the airflow damper 28.
[0030] like Figure 1 As shown in the best example, the shape of the grille 30 is generally concave. (Reference) Figure 3 The grille 30 includes an air outlet 32 from which a first portion of the airflow is emitted from the diffuser 10. Multiple protrusions 50, intended to contact the user's hair and to emit a second portion of the airflow from the diffuser 10, stand upright on the outer surface of the grille 30.
[0031] The air outlet 32 includes a first array 34 and a second array 36. The first array 34 is located in the central annular region 31 of the grille 30, and the second array 36 is located in the outer peripheral region 33 of the grille 30, which extends around the first array 34. Within each array 34, 36, the air outlets 32 are regularly spaced apart.
[0032] Air outlets 32 in each of the first array 34 and the second array 36 have the same size and shape. The cross-section of each air outlet 32 is circular. Each air outlet 32 may be cylindrical, but in this embodiment, each air outlet 32 is a truncated cone that tapers gradually from the inner surface of the grille 30 toward the outer surface of the grille 30.
[0033] The first array 34 of the air outlet 32 extends around the central portion 38 of the outer surface of the grille 30. The second array 36 of the air outlet 32 surrounds the first array 34 of the air outlet 32 and is concentric with it.
[0034] The central portion 38 of the grille 30 includes a circular, unperforated grille area without air outlets 32 and protrusions 50. An annular region 39 of the grille 30, located between the arrays 34, 36 of air outlets 32, also lacks air outlets 32 and protrusions 50. The annular region 39 is defined by an inner edge 41 and an outer edge 42. The outer edge 42 is embossed relative to the inner edge 41. Therefore, a raised outer peripheral region 43 is defined between the outer edge 42 and the outer periphery 44 of the grille 30, forming the outer periphery of the diffuser 10. The surface of the annular region 39 is generally curved between the inner edge 41 and the outer edge 42, but this is not necessary. For example, the outer surface of the annular region 39 may be otherwise shaped or generally flat.
[0035] In this embodiment, the protrusion 50 includes a set of inner protrusions 52, a first set of outer protrusions 54, and a second set of outer protrusions 56. In this embodiment, the inner protrusions 52, the first set of outer protrusions 54, and the second set of outer protrusions 56 are concentric about a common axis 21. However, this is not necessary, and the group of protrusions 52, 54, and 56 can be arranged in other ways. In this embodiment, the inner protrusions 52, the first set of outer protrusions 54, and the second set of outer protrusions 56 have the same size and shape. However, alternatively, the protrusions 52, 54, and 56 can have different sizes. For example, the inner protrusion 52 can be smaller than the first set of outer protrusions 54 and the second set of outer protrusions 56.
[0036] The inner protrusions 52 are arranged in a circular array around the central portion 38 of the grille 30, between the air outlets 32 of the first array 34, such that the inner protrusions 52 are arranged around some of the air outlets 32 of the grille 30. In this embodiment, the inner protrusions 52 include ten protrusions 52, which are equidistant from each other, such that the inner protrusions 52 are angularly spaced about the axis 21.
[0037] Each of the inner protrusions 52 includes an air inlet 62 formed in the grille 30 (see Figure 4 The air inlet 62 is circular in shape, and its diameter is larger than the diameter of the air outlet 32 of the grille 30. The air outlet 63 of the inner protrusion 52 is in the form of an elongated side air outlet, with a height greater than half the height of the inner protrusion 52 and a width less than the height of the air outlet 63. However, this is not necessary, and in alternative embodiments, the air outlets 63 may be less than or equal to the height of the inner protrusion 52, and their width may be greater than their height.
[0038] The protrusion 52 within the group includes a first subgroup protrusion 51 and a second subgroup protrusion 53. The air outlet 63 of the first subgroup protrusion 51 is arranged to emit air from the central portion 38 of the grille 30, while the air outlet 63 of the second subgroup protrusion 53 is arranged to emit air toward the central portion 38 of the grille 30. The protrusions of the first subgroup protrusion 51 and the protrusions of the second subgroup protrusion 53 are alternately arranged around the central portion 39 of the grille 30.
[0039] In this embodiment, the air outlet 63 of the protrusion 51 in the first subgroup is arranged to emit air radially outward away from the axis 21. The air outlet 63 of the protrusion 53 in the second subgroup is arranged to emit air radially inward toward the longitudinal axis 21.
[0040] In the raised outer peripheral region 43 of the grille 30, a first group of outer protrusions 54 are arranged in a circular array around the inner protrusions 52 between the second array 36 of the air outlets 32. The first group of outer protrusions 54 is located near the outer periphery 44 of the grille 30. In this embodiment, the first group of outer protrusions 54 includes ten protrusions spaced equidistant from each other, such that the first group of outer protrusions 54 are angularly spaced about axis 21. The angular spacing between adjacent inner protrusions 52 is substantially the same as the angular spacing between adjacent protrusions in the first group of outer protrusions 54.
[0041] The first set of outer protrusions 54 are radially aligned with the inner protrusions 52. Each of the first set of outer protrusions 54 includes an air inlet 64 formed in the grille 30 (see...). Figure 4 The air inlet 64 is circular in shape and its diameter is larger than that of the air outlet 32 of the grille 30. The air outlets 65 of the first set of protrusions 54 are elongated side air outlets, with a height greater than half the height of the first set of protrusions 54 and a width less than the height of the air outlet 65. This is not necessary, and in alternative embodiments, the air outlets 65 may be less than or equal to the height of the first set of protrusions 54, and their width may be greater than their height.
[0042] The air outlets 65 of the first set of protrusions 54 are arranged to emit air from the central portion 38 of the grille 30, and are preferably arranged to emit air radially outward from the axis 21.
[0043] The second group of external protrusions 56 are arranged in a circular array around the inner protrusions 52 in the second array 36 of the air outlet 32 of the grille 30. The protrusions of the first group of external protrusions 54 and the protrusions of the second group of external protrusions 56 are arranged alternately around the central portion 38 of the grille 30. The first group of external protrusions 54 and the second group of external protrusions 56 are radially offset, such that the second group of external protrusions 56 is radially closer to the axis 21 than the first group of external protrusions 54.
[0044] In this embodiment, the second group of external protrusions 56 includes ten protrusions, such that the number of protrusions in the second group of external protrusions 56 is equal to the number of protrusions in the first group of external protrusions 54. The protrusions of the second group of external protrusions 56 are equidistant from each other, such that the second group of external protrusions 56 are angularly distributed about axis 21. The second group of external protrusions 56 is arranged such that each of the second group of external protrusions 56 is angularly offset relative to the inner protrusions 52 of the group and the first group of external protrusions 54.
[0045] Each of the second group of protrusions 56 includes an air inlet 66 formed in the grille 30 (see...). Figure 4 The air inlet 66 is circular in shape and its diameter is larger than that of the air outlet 32 of the grille 30. The air outlet 67 is in the form of an elongated side air outlet, with a height greater than half the height of the second set of protrusions 56 and a width less than the height of the air outlet 67. This is not required, and in alternative embodiments, the air outlet 67 may be less than or equal to the height of the second set of protrusions 56, and the width of the air outlet 67 may be greater than the height of the second set of protrusions 56.
[0046] The air outlet 67 of the second set of external protrusions 56 is arranged to emit air toward the central portion 38 of the grille 30, preferably radially inward toward the axis 21, such that none of the second set of external protrusions 56 is located in the path of air emitted from the inner protrusion 52 of that set or the first set of external protrusions 54.
[0047] Each component of the diffuser 10 is formed of a plastic material. In this embodiment, the component is formed of glass-filled nylon.
[0048] In use, the diffuser 10 is attached to the airflow outlet end 102 of the blower 100.
[0049] It should be understood that the above description and Figures 1 to 4 The exemplary diffuser 10 shown is merely illustrative, and other arrangements of the diffuser are conceivable. For example, the diffuser does not need to have circular symmetry, but may be elliptical or generally linear. The inner protrusions 52 do not need to be aligned with the first set of outer protrusions 54, and the air outlets 63 of the inner protrusions do not need to alternate in their flow direction, such that all air outlets 63 can face inward or all air outlets can face outward. Furthermore, the number of protrusions in the second set of outer protrusions 56 does not need to be equal to the number of protrusions in the first set of outer protrusions 54, such that the second set of outer protrusions 56 may include more or fewer protrusions than the first set of outer protrusions 54.
[0050] In an alternative example, the multiple protrusions may consist of only one set of inner protrusions 52 and a first set of outer protrusions 54, such that the second set of outer protrusions 56 is omitted.
[0051] The central portion 38 and / or the annular region 39 may include air outlets 32 and / or tips 50. The groups of tips 52, 54, and 56 do not need to be arranged in a circular array and do not need to be concentric.
Claims
1. A diffuser for attachment to the airflow outlet end of a hair dryer, the diffuser comprising: At least one air inlet for receiving airflow from the blower; A grille, the grille including a central portion and a plurality of air outlets for emitting a first portion of the airflow from the diffuser; and A second part of the grille includes multiple protrusions that stand upright from the grille for contacting the user’s hair and for emitting airflow, each of the protrusions including a single air outlet; The plurality of protrusions includes a set of inner protrusions arranged around the central portion of the grille, and a first set of outer protrusions arranged around the inner protrusions, wherein the air outlets of the first set of outer protrusions are arranged to emit air away from the central portion of the grille.
2. The diffuser of claim 1, further comprising a second set of outer protrusions arranged around the inner protrusion, wherein, Each of the second set of external protrusions includes a single air outlet, the single air outlet being arranged to emit air toward the central portion of the grille.
3. The diffuser according to claim 2, wherein, The protrusions in the first group of external protrusions and the protrusions in the second group of external protrusions are arranged alternately around the internal protrusion.
4. The diffuser according to claim 2 or 3, wherein, The first group of protruding parts and the second group of protruding parts are each arranged in a ring array around a common axis.
5. The diffuser according to claim 4, wherein, The first set of external protrusions is radially offset from the second set of external protrusions relative to the common axis.
6. The diffuser according to any one of claims 2 to 5, wherein, The second group of protrusions are equidistant from each other.
7. The diffuser according to any one of the preceding claims, wherein, The first group of protrusions are equidistant from each other.
8. The diffuser according to any one of claims 2 to 7, wherein, The number of protrusions in the first group of external protrusions is equal to the number of protrusions in the second group of external protrusions.
9. The diffuser according to any one of the preceding claims, wherein, The air outlet of the protrusion in the first subgroup is arranged to emit air away from the center portion of the grille, and the air outlet of the protrusion in the second subgroup is arranged to emit air toward the center portion of the grille.
10. The diffuser according to claim 9, wherein, The protrusions of the first subgroup and the protrusions of the second subgroup are arranged alternately around the central portion of the grille.
11. The diffuser according to claim 9 or 10, wherein, The inner protrusions are arranged in a circular array and are equidistant from each other.
12. The diffuser according to claim 11, wherein, The angular spacing between adjacent inner protrusions is basically the same as the angular spacing between adjacent protrusions in the first group of outer protrusions.
13. The diffuser according to claim 12, wherein, The inner protrusion is radially aligned with the first group of outer protrusions.
14. The diffuser according to claim 12 or 13, wherein, When present, the second set of external protrusions is offset at an angle relative to both the internal protrusions and the first set of external protrusions.
15. The diffuser according to any one of claims 9 to 14, wherein, The set of inner protrusions, the first set of outer protrusions, and the existing second set of outer protrusions are concentric.
16. The diffuser according to any one of the preceding claims, wherein, The first set of external protrusions is located near the outer periphery of the diffuser.
17. The diffuser according to any one of the preceding claims, wherein, The inner protrusions are arranged around some of the air outlets of the grille.
18. The diffuser according to any one of the preceding claims, wherein, The central portion of the grille includes a circular, unperforated grille area.
19. A kit comprising a diffuser and a hair dryer according to any one of the preceding claims.
20. A hair dryer comprising a diffuser according to any one of the preceding claims.