Air outlet cover and clothes dryer

Abstract

The application discloses an air outlet cover and a clothes dryer, and belongs to the technical field of clothes dryers. The air outlet cover comprises an air outlet grille, the air outlet grille is provided with an air guide protrusion and a grille cover, the grille cover is arranged in an annular shape, one end of the grille cover is provided with an air inlet communicated with the inside of the grille cover, the air guide protrusion is nested on the inner side of the grille cover and protrudes towards the air inlet, the surface of the grille cover is inclined relative to the protruding direction of the air guide protrusion, the opening of the grille cover gradually expands along the protruding direction, and the surface of the grille cover is provided with a plurality of air outlets communicated with the inside of the grille cover. The air outlet cover can make the airflow blow straightly to the clothes to be dried located above or on the side of the air outlet cover, so that the drying efficiency and the clothes drying speed are improved.

Description

Technical Field

[0001] This application belongs to the field of dryer technology, specifically relating to an air outlet hood and a dryer. Background Technology

[0002] In related technologies, the air outlet of dryers is generally designed to be horizontal. However, with a horizontal air outlet design, the kinetic energy of the hot air is obviously insufficient. Most of the hot air can only come into contact with the clothes to be dried through heat diffusion, resulting in low drying efficiency and slow drying speed. Utility Model Content

[0003] This application aims to provide an air outlet hood and a clothes dryer. The air outlet hood can direct the airflow upwards and directly blow the clothes to be dried above the air outlet hood, thereby improving drying efficiency and drying speed.

[0004] The first aspect of this application proposes an air outlet cover, comprising: an air outlet grille having an air guide protrusion and a grille cover, the grille cover being arranged in an annular shape, one end of the grille cover having an air inlet communicating with the interior of the grille cover, the air guide protrusion being nested inside the grille cover and protruding towards the air inlet, the surface of the grille cover being inclined relative to the protrusion direction of the air guide protrusion, and the grille cover having an opening that gradually widens along the protrusion direction, the surface of the grille cover having a plurality of air outlets communicating with the interior of the grille cover.

[0005] In the technical solution of this application, the air guide protrusion is nested inside the grille cover and protrudes towards the air inlet of the grille cover. The grille cover is an annular structure with an opening that gradually widens along the protrusion direction of the air guide protrusion. The surface of the grille cover is inclined relative to the protrusion direction of the air guide protrusion, and an air outlet is provided on the surface of the grille cover. When the airflow enters the grille cover along the air inlet, the airflow will be guided by the air guide protrusion and evenly dispersed in all directions, and finally discharged obliquely from the air outlet on the inclined surface of the grille cover. The air guide protrusions disperse the airflow entering the grille from the air inlet evenly, reducing turbulence caused by airflow impacting the inner wall of the grille, minimizing kinetic energy loss, and increasing hot air velocity. By setting the air outlet on the grille surface at an angle relative to the air guide protrusions, it achieves tilted airflow. The tilted air outlet, combined with the increased airflow velocity from the air guide protrusions, directs the airflow upwards towards the clothes to be dried above or to the side of the air outlet, improving drying efficiency and speed. Furthermore, compared to horizontal air outlets, the angle of airflow reversal from the air inlet to the outlet is reduced at the tilted outlet, which can mitigate vortex phenomena at the outlet to some extent, further increasing airflow kinetic energy and allowing hot air to be delivered further, thus further improving drying efficiency and speed.

[0006] According to some technical solutions of this application, optionally, the air guide protrusion has a convex portion and a guide portion. The convex portion is located inside the grille cover and is disposed towards the air inlet. The guide portion extends arcuately from the end of the grille cover away from the air inlet to the convex portion. The surface of the guide portion facing the air inlet is a concave arc surface, and the surface of the convex portion facing the air inlet is a convex arc surface.

[0007] The end of the grille away from the air inlet is connected to the protrusion through a guide section. When the airflow enters the grille through the air inlet, the airflow is dispersed in all directions by the guide section and further guided by the guide section to the surface of the grille located around the air guide protrusion. Finally, it is discharged from the air outlet on the surface of the grille. This can reduce the direct impact area of ​​the airflow on the surface of the air guide protrusion, thereby further improving the airflow guiding effect of the air guide protrusion and improving the turbulence phenomenon inside the grille.

[0008] Setting the surface of the convex bulge facing the air inlet as a convex arc surface can reduce airflow reflection, making the airflow on the surface of the convex bulge smoother. This further reduces the flow resistance when the convex bulge guides the airflow to the surroundings, reduces the kinetic energy loss of the airflow, and increases the hot air velocity.

[0009] The surface of the air guide facing the air inlet is set as a concave arc surface. The concave arc surface can guide the airflow more smoothly to the surface of the grille around the air guide protrusion, reduce the turbulence caused by the airflow hitting the inner wall of the grille, reduce the kinetic energy loss of the airflow, and increase the hot air velocity.

[0010] According to some technical solutions of this application, the air guide protrusion may optionally be spherical, or conical that gradually narrows along the protrusion direction, or spindle-shaped that gradually widens and then narrows along the protrusion direction.

[0011] Setting the air guide protrusion into a spherical shape, or a cone shape that gradually narrows along the protrusion direction, or a spindle shape that gradually widens and then narrows along the protrusion direction, can also achieve the same effect of evenly dispersing the airflow in all directions to increase the hot air velocity.

[0012] Optionally, according to some technical solutions of this application, the inner surface of the grille cover is provided with air guide ribs, which are located at the intervals between adjacent air outlets.

[0013] By setting air guide ribs on the inner surface of the grille, the airflow flowing along the inner surface of the grille can be guided, improving the airflow turbulence on the inner surface of the grille, enhancing the consistency of airflow direction inside the grille, reducing aerodynamic vortices at the air outlet, and further enhancing the airflow kinetic energy, so that hot air can be delivered to a farther place, thereby further improving drying efficiency and drying speed.

[0014] According to some technical solutions of this application, optionally, both the air outlet and the air guide rib are set into long strips, and the extension direction of the air outlet and the extension direction of the air guide rib are consistent with the inclined direction of the surface of the grille cover.

[0015] In this way, the extension direction of the air outlet and the air guide rib can roughly follow the airflow inertial direction on the inner surface of the grille, which can better improve the consistency of the airflow direction inside the grille and reduce the aerodynamic vortex at the air outlet.

[0016] According to some technical solutions of this application, optionally, the area of ​​the air inlet is S1; in the protrusion direction, the protrusion height of the air guide protrusion relative to the end of the air outlet grille away from the air inlet is H, wherein the outer contour area of ​​the cross section of the air guide protrusion at position H / 2 is S2, and S2 and S1 satisfy: 0.5S1≥S2≥0.05S1.

[0017] By setting S2 and S1 to satisfy the constraint relationship of 0.5S1≥S2≥0.05S1, the uniform dispersion effect of the air guide protrusion on the airflow can be improved by controlling S2≥0.05S1. By controlling 0.5S1≥S2, the reflection effect of the air guide protrusion on the airflow can be effectively suppressed, making the airflow on the surface of the air guide protrusion smoother, thereby reducing the kinetic energy loss of the airflow and increasing the hot air velocity.

[0018] According to some technical solutions of this application, optionally, the angle α between the surface of the grille cover and the perpendicular direction of the protrusion direction satisfies: 60°≥α≥30°.

[0019] The angle α between the surface of the grille and the perpendicular direction of the protrusion satisfies the constraint relationship of 60°≥α≥30°, which can realize the upward oblique airflow to directly blow the clothes to be dried located above or to the side of the air outlet. At the same time, it also ensures the improvement of the vortex phenomenon at the air outlet, further enhances the airflow kinetic energy, and allows the hot air to be delivered to a farther place, thereby further improving the drying efficiency and drying speed.

[0020] Optionally, α satisfies: 45° ≥ α ≥ 40°.

[0021] According to some technical solutions of this application, optionally, the air outlet cover also includes: a water baffle, which is disposed on the side of the air outlet grille facing away from the convex direction, a support column is provided between the water baffle and the air outlet grille, and the water baffle and the air outlet grille are spaced at a preset distance by means of the support column, and the projection of the water baffle along the convex direction covers the air outlet.

[0022] By using the projection of the water-retaining cover along the raised direction to cover the air outlet, the risk of water entering the air outlet and the risk of fire in the dryer can be reduced. It also helps to maintain the cleanliness of the air outlet cover. Using support columns to maintain a preset distance between the water-retaining cover and the air outlet grille, a certain height difference can be maintained between the air outlet and the water-retaining cover. This significantly reduces the area of ​​air outlet coverage blocked by the water-retaining cover, allowing hot air to blow directly onto the clothes over a wider area.

[0023] According to some technical solutions of this application, optionally, the angle θ between the line connecting the end of the air outlet closest to the water baffle to the edge of the water baffle and the perpendicular direction of the protrusion direction satisfies: 70°≥θ≥30°; and / or the side of the water baffle facing away from the air outlet grille forms a water-holding surface, the water-holding surface is provided with a drain outlet, a first guide groove is provided on the support column, a second guide groove is provided on the grille cover, one end of the first guide groove corresponds to the drain outlet, and the other end of the first guide groove corresponds to the second guide groove.

[0024] The angle θ of the line connecting the end of the air outlet closest to the water baffle to the edge of the water baffle relative to the perpendicular direction of the protrusion direction satisfies the constraint relationship of 70°≥θ≥30°. By making θ≥30°, the obstruction of the airflow from the air outlet by the water baffle can be reduced, allowing the hot air blown from the air outlet to cover clothing within a sufficient width. By making 70°≥θ, the water baffle can be made to block water from the air outlet while reserving a more sufficient range for the air outlet layout, so as to ensure the air outlet area.

[0025] The water-filled surface is used to block water from entering the air outlet, thus reducing the risk of water ingress. Water that falls onto the water-filled surface can be guided sequentially along the drain outlet, the first guide channel, and the second guide channel before being discharged, reducing the risk of water overflowing from the edge of the water-filled surface, which further reduces the risk of water ingress into the air outlet.

[0026] The second aspect of this application proposes a clothes dryer, including the air outlet hood of any of the above-mentioned technical solutions.

[0027] In the technical solution of this application, the dryer has all the above-mentioned beneficial effects by setting the air outlet hood in any of the above technical solutions, which will not be repeated here.

[0028] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0029] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is an exploded structural diagram of the air outlet shroud in some embodiments of this application.

[0031] Figure 2 This is a cross-sectional structural diagram of the air outlet hood in some embodiments of this application.

[0032] Figure 3 This is a cross-sectional structural diagram of the air outlet hood in some embodiments of this application.

[0033] Figure 4 yes Figure 3 The diagram shows a cross-sectional view of part AA.

[0034] Figure 5 This is a cross-sectional structural diagram of the air outlet hood in some embodiments of this application.

[0035] Figure 6 This is a front view structural diagram of a clothes dryer in some embodiments of this application.

[0036] Figure label:

[0037] 10. Clothes dryer; 11. Air outlet cover; 12. Air supply unit; 100. Air outlet grille; 110. Air guide protrusion; 111. Protrusion; 112. Air guide section; 120. Grille cover; 121. Air inlet; 122. Air outlet; 123. Air guide rib; 124. Second air guide channel; 200. Water baffle cover; 211. Water holding surface; 212. Drain outlet; 300. Support column; 310. First air guide channel. Detailed Implementation

[0038] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0039] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0040] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "protrusion direction" is based on the orientation or positional relationship shown in the drawings and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] Clothes dryers in related technologies, such as portable dryers and cabinet dryers, generally adopt a horizontal air outlet design. For dryers with a horizontal air outlet design, the air outlet is obviously in an aerodynamic vortex, and the airflow inside the dryer is turbulent. The initial kinetic energy of the airflow is low, and the hot air dries clothes only through heat diffusion, resulting in low drying efficiency.

[0043] The air outlet hood and dryer of the embodiments of this application optimize the structure of the air outlet hood by adopting an internal airflow guide combined with an inclined air outlet design, which can significantly improve the airflow speed, so that hot air can be directly blown on the clothes to be dried, and the drying efficiency is significantly improved.

[0044] The following is a combination Figures 1 to 6 Description of the air hood and clothes dryer in the embodiments of this application.

[0045] Combination Figures 1 to 6 It is understood that the embodiments of the first aspect of this application provide an air outlet cover 11.

[0046] The air outlet cover 11 includes an air outlet grille 100, which has an air guide protrusion 110 and a grille cover 120. The grille cover 120 is arranged in a ring shape. One end of the grille cover 120 is provided with an air inlet 121 that communicates with the interior of the grille cover 120. The air guide protrusion 110 is nested inside the grille cover 120 and protrudes toward the air inlet 121. The surface of the grille cover 120 is inclined relative to the protrusion direction of the air guide protrusion 110, and the opening of the grille cover 120 gradually widens along the protrusion direction. The surface of the grille cover 120 is provided with a plurality of air outlets 122 that communicate with the interior of the grille cover 120.

[0047] The air vent 11 is installed at the exhaust port of the equipment, for example, at the exhaust port of the air supply unit 12 of the dryer 10, and is a component used to control the airflow. At the same time, the air vent 11 also serves to prevent foreign objects from entering the exhaust port.

[0048] The protruding direction of the air guide protrusion 110 refers to the direction in which the end of the air guide protrusion 110 faces. The function of the air guide protrusion 110 is to guide and disperse the airflow entering the grille cover 120 from the air inlet 121 to the surrounding area. In the embodiments of this application, the protruding direction of the air guide protrusion 110 can be determined by... Figures 1 to 6 The y-direction is shown in the diagram.

[0049] Gradual opening expansion refers to the gradual increase in the width or radial cross-section of the annular grid cover 120.

[0050] In the embodiments of this application, the air guide protrusion 110 is nested inside the grille cover 120 and protrudes towards the air inlet 121 of the grille cover 120. The grille cover 120 is an annular structure with a gradually expanding opening along the protrusion direction of the air guide protrusion 110. The surface of the grille cover 120 is inclined relative to the protrusion direction of the air guide protrusion 110, and an air outlet 122 is provided on the surface of the grille cover 120. When the airflow enters the grille cover 120 along the air inlet 121, the airflow will be guided by the air guide protrusion 110 and evenly dispersed in all directions, and finally discharged obliquely from the air outlet 122 on the inclined surface of the grille cover 120. The air guide protrusion 110 can evenly disperse the airflow entering the grille cover 120 from the air inlet 121, thereby reducing the turbulence caused by the airflow hitting the inner wall of the grille cover 120, reducing the kinetic energy loss of the airflow, and increasing the hot air velocity. By setting the air outlet 122 on the surface of the grille cover 120 that is inclined relative to the air guide protrusion 110, it can achieve inclined air outlet. With the inclined air outlet 122 and the air velocity increase achieved by the air guide protrusion 110, the airflow can be blown obliquely upwards and directly onto the clothes to be dried located above or to the side of the air outlet cover 11, improving drying efficiency and drying speed. On the other hand, compared with the horizontal air outlet 122, the angle of airflow reversal from the air inlet 121 to the air outlet 122 is reduced, which can improve the vortex phenomenon at the air outlet 122 to a certain extent, further increasing the airflow kinetic energy, so that the hot air can be delivered to a farther place, thereby further improving drying efficiency and drying speed.

[0051] like Figure 2 As shown, according to some embodiments of this application, optionally, the air guide protrusion 110 and the grille cover 120 can be integrally injection molded parts. Of course, this application is not limited to this; in other embodiments, the air guide protrusion 110 and the grille cover 120 can also be separately molded and connected and fixed by structures such as screws or clips.

[0052] According to some embodiments of this application, optionally, in combination with Figure 1 and Figure 2 It is understood that the grille cover 120 can be configured in a shape similar to a square pyramid to achieve a structure in which the opening gradually widens from the end away from the air inlet 121 to the end closer to the air inlet 121. Of course, this application is not limited to this. In other embodiments, the grille cover 120 can also be configured in a structure with a gradually widening opening, such as a cone shape, a triangular pyramid shape, or a pentagonal pyramid shape.

[0053] like Figure 2 As shown, according to some embodiments of this application, optionally, the air guide protrusion 110 has a convex portion 111 and a flow guide portion 112. The convex portion 111 is located inside the grille cover 120 and is disposed toward the air inlet 121. The flow guide portion 112 extends arcuately from one end of the grille cover 120 away from the air inlet 121 to the convex portion 111.

[0054] Combination Figure 2 It is understood that by connecting the end of the grille cover 120 away from the air inlet 121 to the protrusion 111 via the guide portion 112, the cross-sectional shape of the air outlet grille 100 in the plane parallel to the protrusion direction is approximately M-shaped, which can reduce air leakage. When the airflow enters the grille cover 120 along the air inlet 121, the airflow can be guided by the protrusion 111 and dispersed to the surrounding areas. It is further guided by the guide portion 112 to the surface of the grille cover 120 located around the air guide protrusion 110, and finally discharged from the air outlet 122 on the surface of the grille cover 120. This can reduce the direct impact area of ​​the airflow on the surface of the air guide protrusion 110, thereby further improving the airflow guiding effect of the air guide protrusion 110 and improving the turbulence phenomenon inside the grille cover 120.

[0055] like Figure 2 As shown, according to some embodiments of this application, optionally, the surface of the guide portion 112 facing the air inlet 121 is a concave arc surface, and the surface of the convex portion 111 facing the air inlet 121 is a convex arc surface. In this way, the surface of the air guide protrusion 110 facing the air inlet 121 is approximately a smooth parabolic shape.

[0056] By setting the surface of the convex bulge 111 facing the air inlet 121 as a convex arc surface, airflow reflection can be reduced, making the airflow on the surface of the convex bulge 111 smoother, thereby further reducing the flow resistance when the convex bulge 111 guides the airflow to the surroundings, reducing the kinetic energy loss of the airflow, and increasing the hot air velocity.

[0057] By setting the surface of the air guide 112 facing the air inlet 121 to be a concave arc surface, the airflow can be guided more smoothly to the surface of the grille cover 120 around the air guide protrusion 110, reducing the turbulence caused by the airflow hitting the inner wall of the grille cover 120, reducing the kinetic energy loss of the airflow, and increasing the hot air velocity.

[0058] Of course, this application is not limited thereto. In other embodiments, the air guide protrusion 110 can be configured as a sphere, or as a cone that gradually narrows along the protrusion direction, or as a spindle shape that gradually widens and then narrows along the protrusion direction. This can also achieve the goal of evenly dispersing the airflow in all directions to increase the hot air velocity.

[0059] According to some embodiments of this application, optionally, the air guide protrusion 110 can be configured as follows: Figure 2 The hollow structure shown in the figure helps to reduce the weight of the air outlet shroud 11 and also improves the molding quality of the air outlet shroud 111. Of course, this application is not limited to this; in other embodiments, the air guide protrusion 110 can also be set as a solid structure.

[0060] like Figure 2 As shown, according to some embodiments of this application, optionally, the inner surface of the grille cover 120 is provided with a guide rib 123, and the guide rib 123 is located at the interval between adjacent air outlets 122.

[0061] By setting air guide ribs 123 on the inner surface of the grille cover 120, the airflow flowing along the inner surface of the grille cover 120 can be guided, the airflow turbulence on the inner surface of the grille cover 120 can be improved, the consistency of the airflow direction inside the grille cover 120 can be enhanced, the aerodynamic vortex at the air outlet 122 can be reduced, and the air outlet kinetic energy can be further enhanced, so that hot air can be delivered to a farther place, thereby further improving drying efficiency and drying speed.

[0062] like Figure 2 As shown, according to some embodiments of this application, optionally, the air outlet 122 and the air guide rib 123 are both arranged in the shape of long strips, and the extension direction of the air outlet 122 and the extension direction of the air guide rib 123 are consistent with the inclined direction of the surface of the grille cover 120.

[0063] In this way, the extension direction of the air outlet 122 and the air guide rib 123 can roughly follow the airflow inertial direction on the inner surface of the grille cover 120, which can better improve the consistency of the airflow direction inside the grille cover 120 and reduce the aerodynamic vortex at the air outlet 122.

[0064] Combination Figure 3 and Figure 4 It is understood that, according to some embodiments of this application, optionally, the area of ​​the air inlet 121 is S1; in the protrusion direction, the protrusion height of the air guide protrusion 110 relative to the end of the air outlet grille 100 away from the air inlet 121 is H, wherein the outer contour area of ​​the cross section of the air guide protrusion 110 at the H / 2 position is S2, and S2 and S1 satisfy: 0.5S1≥S2≥0.05S1.

[0065] By controlling S2≥0.05S1, the uniform dispersion effect of the airflow by the air guide protrusion 110 can be improved. By controlling 0.5S1≥S2, the reflection effect of the air guide protrusion 110 on the airflow can be effectively suppressed, making the airflow on the surface of the air guide protrusion 110 smoother, thereby reducing the kinetic energy loss of the airflow and increasing the hot air velocity.

[0066] like Figure 5 As shown, according to some embodiments of this application, optionally, the angle α between the surface of the grille cover 120 and the perpendicular direction of the protrusion direction satisfies: 60°≥α≥30°.

[0067] The angle α between the surface of the grille cover 120 and the perpendicular direction of the protrusion satisfies the constraint relationship of 60°≥α≥30°, which can realize the upward oblique airflow to directly blow the clothes to be dried located above or to the side of the air outlet cover 11. At the same time, it also ensures the improvement of the vortex phenomenon at the air outlet 122, further enhances the airflow kinetic energy, and allows the hot air to be delivered to a farther place, thereby further improving the drying efficiency and drying speed.

[0068] Optionally, α satisfies: 45° ≥ α ≥ 40°.

[0069] like Figure 1 As shown, according to some embodiments of this application, optionally, the air outlet cover 11 also includes a water baffle 200, which is disposed on the side of the air outlet grille 100 facing away from the convex direction. A support column 300 is provided between the water baffle 200 and the air outlet grille 100, and the support column 300 makes the water baffle 200 and the air outlet grille 100 spaced at a preset distance. The projection of the water baffle 200 along the convex direction covers the air outlet 122.

[0070] By using the projection of the water-retaining cover 200 along its raised direction to cover the air outlet 122, the risk of water entering the air outlet 122 can be reduced, as can the risk of fire in the dryer 10. It also helps maintain cleanliness inside the air outlet cover 11. The support column 300 maintains a predetermined distance between the water-retaining cover 200 and the air outlet grille 100, thus maintaining a certain height difference between the air outlet 122 and the water-retaining cover 200, reducing the area blocked by the water-retaining cover 200 from the upward blowing of hot air. After the hot air is blown out from the air outlet on the inclined air outlet surface, it can cover all space except for the area blocked by the water-retaining cover 200, allowing the hot air to blow directly onto surrounding clothes over a wide area, significantly improving drying efficiency.

[0071] Combination Figure 1 and Figure 2It is understood that, according to some embodiments of this application, optionally, the support column 300 and the water baffle 200 can be integrally injection molded parts, and the support column 300 is connected and fixed to the grille cover 120 of the air outlet grille 100 by screws or clips. Of course, this application is not limited to this. In other embodiments, the support column 300 and the water baffle 200 can also be separately molded and connected and fixed by screws or clips; or, the support column 300 and the air outlet grille 100 can be integrally injection molded parts, and the support column 300 and the water baffle 200 are connected and fixed by screws or clips.

[0072] Optionally, the support column 300 can be a hollow structure with thin walls or a solid column.

[0073] Optionally, such as Figure 2 As shown, the air inlet 121 of the air outlet grille 100 can be set downwards, the protrusion direction of the air guide protrusion 110 can be the direction of gravity, and the water baffle 200 can be set directly above the air outlet grille 100.

[0074] Optionally, the maximum projected area of ​​the water baffle 200 along the protrusion direction of the air guide protrusion 110 can cover all the air outlets 122 of the air outlet grille 100, which can further reduce the risk of water ingress into the air outlets 122.

[0075] like Figure 5 As shown, according to some embodiments of this application, optionally, the angle θ between the line L1 connecting the end of the air outlet 122 closest to the water baffle 200 to the edge of the water baffle 200 and the perpendicular direction L2 of the protrusion direction satisfies: 70°≥θ≥30°.

[0076] By making θ≥30°, the obstruction of the airflow from the air outlet 122 by the water baffle 200 can be reduced, allowing the hot air blown out of the air outlet 122 to cover clothing within a sufficient width. By making 70°≥θ, the water baffle 200 can be made to block water from the air outlet 122 while allowing for a more adequate layout of the air outlet 122, thus ensuring the air outlet area.

[0077] Combination Figure 1 and Figure 2 It is understood that, according to some embodiments of this application, optionally, a water-holding surface 211 is formed on the side of the water baffle 200 facing away from the air outlet grille 100, the water-holding surface 211 is provided with a drain outlet 212, a first guide channel 310 is provided on the support column 300, and a second guide channel 124 is provided on the grille cover 120. One end of the first guide channel 310 corresponds to the drain outlet 212, and the other end of the first guide channel 310 corresponds to the second guide channel 124.

[0078] The water-holding surface 211 is used to block water from the air outlet 122, thereby reducing the risk of water entering the air outlet 122. The water that falls onto the water-holding surface 211 can be guided and discharged in sequence along the drain outlet 212, the first guide channel 310, and the second guide channel 124, which can reduce the risk of water overflow at the edge of the water-holding surface 211, thus further reducing the risk of water entering the air outlet 122.

[0079] Optionally, the first guide channel 310 can be disposed on the outer surface of the support column 300, and the second guide channel 124 can be disposed on the outer surface of the grille cover 120, facilitating daily cleaning of the first guide channel 310 and the second guide channel 124. Of course, in other embodiments, the first guide channel 310 can also be disposed inside the support column 300, and the second guide channel 124 can also be disposed inside the grille cover 120.

[0080] like Figure 6 As shown, an embodiment of the second aspect of this application provides a clothes dryer 10, including the air outlet hood 11 in any of the above embodiments.

[0081] Optionally, the dryer 10 may also include a main air supply unit 12, which has an exhaust port, and the air inlet 121 of the exhaust hood 11 is connected to the exhaust port. For example Figure 6 As shown, the air outlet hood 11 can be connected to the exhaust port on the top of the air supply unit 12, so that in the assembled dryer 10, the air outlet hood 11 is located directly above the air supply unit 12.

[0082] For more detailed examples, the air supply unit 12 may be equipped with a fan and a heating element, such as a PTC (Positive Temperature Coefficient) heating element.

[0083] Air is driven by a fan into the air supply unit 12, heated by the heating element into hot air, and then discharged upwards to enter the air outlet hood 11. Inside the air outlet hood 11, the hot air impacts the air guide protrusion 110, is guided by the air guide protrusion 110 and diffuses to the surroundings, and is then discharged through the air outlet 122 on the air outlet grille 100 to directly blow on the surrounding clothes for drying.

[0084] By tilting the surface of the grille cover 120 of the air outlet grille 100 and setting the air outlet 122 on the surface of the grille cover 120, the air velocity of the hot air discharged from the air outlet 122 can be increased because the surface of the grille cover 120 and the protrusion direction of the air guide protrusion 110 (e.g., the direction of gravity) form a certain angle α.

[0085] The water baffle 200 is located directly above the air outlet grille 100 and is separated from the air outlet grille 100 by a support column 300. The support column 300 creates a height difference of a preset distance between the air outlet grille 100 and the water baffle 200, reducing the air outlet coverage area blocked by the water baffle 200.

[0086] The angle θ between the line connecting each point of the outermost boundary of the water baffle 200 and the highest point of the air outlet 122 of the air outlet grille 100 and the horizontal direction (e.g., the vertical direction of the protrusion direction) reflects the coverage range of the upward air outlet 122. The higher the support column 300 is, the larger the angle θ is, and the wider the coverage range of the upward air outlet 122.

[0087] like Figure 4 As shown, Figure 4 The diagram illustrates the cross-sectional area S2 of the air guide protrusion 110 at a height of H / 2. The cross-sectional area S2 is also... Figure 4 The area within the outline indicated by the label line S2. Figure 4 The area S1 of the air inlet 121 is also shown. Figure 4 The area within the outline indicated by the line marked S1. To ensure that the air guide protrusion 110 can effectively disperse hot air, S2 cannot be too small; otherwise, the upward-blown airflow will not be fully dispersed before leaving the air outlet grille 100, and the airflows will interfere with each other, resulting in a decrease in the outlet air velocity. In this embodiment, by limiting S2 to not less than 5% of S1, i.e., S2 ≥ 0.05S1, it can be ensured that the air guide protrusion 110 can effectively disperse the airflow.

[0088] The clothes dryer 10 of the embodiments of this application can use the air outlet hood 11 to make the airflow blow directly upwards onto the clothes to be dried located above the air outlet hood 11, thereby improving drying efficiency and drying speed.

[0089] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0090] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An air outlet cover, characterized in that, include: An air outlet grille has an air guide protrusion and a grille cover. The grille cover is annular, and one end of the grille cover has an air inlet communicating with the interior of the grille cover. The air guide protrusion is nested inside the grille cover and protrudes toward the air inlet. The surface of the grille cover is inclined relative to the protrusion direction of the air guide protrusion, and the opening of the grille cover gradually widens along the protrusion direction. The surface of the grille cover has multiple air outlets communicating with the interior of the grille cover.

2. The air outlet hood according to claim 1, characterized in that, The air guide protrusion has a convex portion and a flow guide portion. The convex portion is located inside the grille cover and is positioned towards the air inlet. The flow guide portion extends arcuately from one end of the grille cover away from the air inlet to the convex portion. The surface of the flow guide portion facing the air inlet is a concave arc surface, and the surface of the convex portion facing the air inlet is a convex arc surface.

3. The air outlet hood according to claim 1, characterized in that, The air guide protrusion is configured as a spherical shape, or as a cone shape that gradually narrows along the direction of the protrusion, or as a spindle shape that gradually widens and then narrows along the direction of the protrusion.

4. The air outlet hood according to any one of claims 1 to 3, characterized in that, The inner surface of the grille cover is provided with air guide ribs, which are located at intervals between adjacent air outlets.

5. The air outlet hood according to claim 4, characterized in that, Both the air outlet and the air guide rib are designed as long strips, and the extension direction of the air outlet and the extension direction of the air guide rib are consistent with the inclination direction of the surface of the grille cover.

6. The air outlet hood according to any one of claims 1 to 3, characterized in that, The area of ​​the air inlet is S1; In the protrusion direction, the protrusion height of the air guide protrusion relative to the end of the air outlet grille away from the air inlet is H, wherein the outer contour area of ​​the cross section of the air guide protrusion at position H / 2 is S2, and S2 and S1 satisfy: 0.5S1≥S2≥0.05S1.

7. The air outlet hood according to any one of claims 1 to 3, characterized in that, The angle α between the surface of the grille cover and the perpendicular direction of the protrusion direction satisfies: 60°≥α≥30°.

8. The air outlet hood according to any one of claims 1 to 3, characterized in that, Also includes: A water baffle is disposed on the side of the air outlet grille facing away from the protrusion. A support column is provided between the water baffle and the air outlet grille, and the water baffle and the air outlet grille are spaced at a preset distance by the support column. The projection of the water baffle along the protrusion direction covers the air outlet.

9. The air outlet hood according to claim 8, characterized in that, The angle θ between the line connecting the end of the air outlet closest to the water baffle to the edge of the water baffle and the perpendicular direction of the protrusion direction satisfies: 70° ≥ θ ≥ 30°; and / or The side of the water-blocking cover opposite to the air outlet grille has a water-holding surface with a drain outlet. The support column has a first guide groove, and the grille cover has a second guide groove. One end of the first guide groove corresponds to the drain outlet, and the other end of the first guide groove corresponds to the second guide groove.

10. A clothes dryer, characterized in that, Includes the air hood as described in any one of claims 1 to 9.

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