Air duct of nursing appliance and nursing appliance

Abstract

The air duct of the nursing appliance comprises an air guide part, the air guide part comprises a first air guide part and a second air guide part, at least part of the first air guide part is an air guide inclined plane, and the first air guide part and the second air guide part are arranged in the air outlet direction. At least one part of the distance between the first air guide part and the central axis of the air duct has a decreasing variation trend, and the other part of the distance is synchronously decreased or unchanged; and / or the second air guide part is at least partially an air guide inclined plane, in the air outlet direction, at least one part of the distance between the second air guide part and the central axis of the air duct has an increasing change trend, and the other part of the distance is synchronously increased or unchanged. Therefore, the coverage range of the outlet air flow can be expanded, the situation that the outlet air flow does not exist in a part of areas or directions due to the fact that the outlet air is excessively concentrated in a single direction is avoided, the whole air outlet area can be covered by the air flow more uniformly in the radial direction, the outlet air flow is softer, and the air noise of the outlet air flow can be reduced.

Description

Technical Field

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

[0002] In existing technologies, the airflow direction of nursing devices is designed to be relatively singular, generally blowing air towards the object being cared for in a direction perpendicular to the handle. This unidirectional airflow limitation results in a concentrated airflow area, which typically leads to high air velocity. Furthermore, strong airflow can also cause significant noise, thus affecting the user's experience and comfort. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a fan duct for a nursing device, which can effectively improve the air outlet area and provide a gentler airflow, thereby enhancing the user's experience of using the nursing device.

[0004] A nursing device air duct according to a first aspect embodiment of the present invention includes: an air outlet channel provided inside the air duct; an air guide portion provided on the wall surface inside the air duct corresponding to the air outlet end of the air outlet channel; the air guide portion includes a first air guide portion and a second air guide portion; the first air guide portion is at least partially a guide slope; in the direction of airflow from the air duct to the air outlet end, the distance between the first air guide portion and the central axis of the air duct has at least a decreasing trend, and the other part decreases synchronously or remains unchanged; and / or the second air guide portion is at least partially a guide slope; in the direction of airflow from the air duct to the air outlet end, the distance between the second air guide portion and the central axis of the air duct has at least a increasing trend, and the other part increases synchronously or remains unchanged; the first air guide portion and the second air guide portion are arranged circumferentially around the central axis of the air duct and are connected to each other.

[0005] Therefore, by making at least a portion of the distance between the first air guide and the central axis of the air duct decrease while the other portion decreases or remains unchanged, and by making at least a portion of the distance between the second air guide and the central axis of the air duct increase while the other portion increases or remains unchanged, the coverage range of the airflow can be expanded, avoiding the situation where the airflow is too concentrated in a single direction, resulting in no airflow in some areas or directions. This allows the entire airflow area to be covered by airflow more evenly in the radial direction, and the airflow is gentler, which can reduce the wind noise of the airflow.

[0006] According to some embodiments of the present invention, the air outlet channel is circumferentially arranged around the central axis of the air duct, the air duct has an inner air outlet wall surface and an outer air outlet wall surface inside, the air outlet channel is located between the inner air outlet wall surface and the outer air outlet wall surface, and at least one of the inner air outlet wall surface and the outer air outlet wall surface is provided with an extended air guide portion corresponding to the air outlet end of the air outlet channel.

[0007] According to some embodiments of the present invention, the extension line connecting the two ends of the first air guide portion forms an angle α with the central axis of the air duct, where α satisfies the relationship: 0 < α < 60°; and / or the extension line connecting the two ends of the second air guide portion forms an angle β with the central axis of the air duct, where β satisfies the relationship: 0 < β < 60°.

[0008] According to some embodiments of the present invention, the air guide portion includes at least one first air guide portion and / or at least one second air guide portion, wherein the first air guide portion and the second air guide portion extend in the circumferential direction and are staggered.

[0009] According to some embodiments of the present invention, the included angle α is not exactly the same at each circumferential extension of each first air guide portion; and / or the included angle β is not exactly the same at each circumferential extension of each second air guide portion.

[0010] According to some embodiments of the present invention, in the direction where the first air guide is close to the second air guide, the included angle α decreases; and / or in the direction where the second air guide is close to the first air guide, the included angle β decreases.

[0011] According to some embodiments of the present invention, the air duct is provided with an air outlet, the air outlet is circumferentially arranged around the central axis of the air duct and connected to the air outlet channel, and the inner and / or outer ring sides of the air outlet are curved.

[0012] According to some embodiments of the present invention, the air duct includes an outer shell and an air inlet. The outer shell is circumferentially covered on the outside of the air inlet and spaced apart from the air inlet. A first air inlet is provided between the air inlet and the air inlet. A second air inlet is provided on the circumferential sidewall of the air inlet. The air outlet is connected to both the first air inlet and the second air inlet.

[0013] According to some embodiments of the present invention, the second air inlet is provided with at least one layer of grille.

[0014] The nursing device according to a second aspect of the present invention includes: the air duct of the above-described nursing device.

[0015] Additional aspects and advantages of this invention 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 the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a partial schematic diagram of a ventilation duct according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of a ventilation duct according to another embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of a ventilation duct according to an embodiment of the present utility model;

[0020] Figure 4 This is a cross-sectional view of the cylinder according to an embodiment of the present utility model;

[0021] Figure 5 yes Figure 4 A schematic diagram of the first embodiment of region A in the middle;

[0022] Figure 6 yes Figure 4 A schematic diagram of the second embodiment of region A in the middle;

[0023] Figure 7 yes Figure 4 A schematic diagram of the third embodiment of region A in the middle;

[0024] Figure 8 yes Figure 4 A schematic diagram of the fourth embodiment of region A in the middle;

[0025] Figure 9 yes Figure 4 A schematic diagram of the fifth embodiment in region A;

[0026] Figure 10 yes Figure 4 A schematic diagram of the sixth embodiment in region A;

[0027] Figure 11 yes Figure 4 A schematic diagram of the seventh embodiment of region A in the middle;

[0028] Figure 12 yes Figure 4 A schematic diagram of the eighth embodiment in region A;

[0029] Figure 13 yes Figure 4A schematic diagram of the ninth embodiment of region A in the middle;

[0030] Figure 14 This is a schematic diagram of a ventilation duct according to an embodiment of the present utility model.

[0031] Figure label:

[0032] 20. Air duct; 21. Air outlet; 22. Air outlet channel; 221. Air guide section; 2211. First air guide section; 2212. Second air guide section; 222. Silencing groove; 223. Silencing component; 224. Inner wall of air outlet; 225. Outer wall of air outlet; 226. Silencing hole; 23. Casing body; 24. Air cover; 241. Outer cover; 242. Air guide component; 243. Outer shell component; 244. Air inlet component; 27. First air inlet; 28. Second air inlet. Detailed Implementation

[0033] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0034] The following is for reference. Figures 1-14 The present invention describes a ventilation duct 20 for a nursing device according to an embodiment of the present invention. The ventilation duct 20 can be applied to a nursing device.

[0035] Reference Figures 1-14 As shown, in the first aspect embodiment of the present invention, the air duct 20 of the nursing device is provided with an air outlet channel 22 inside. The wall surface inside the air duct 20 corresponding to the air outlet end of the air outlet channel 22 is provided with an air guide portion 221. The air guide portion 221 includes a first air guide portion 2211 and a second air guide portion 2212. The first air guide portion 2211 is an air guide slope. In the direction of airflow from the air duct 20 to the air outlet end, the distance between the first air guide portion 2211 and the central axis of the air duct 20 has at least a decreasing trend, and the other part decreases synchronously or remains unchanged. And / or the second air guide portion 2212 is an air guide slope. In the direction of airflow from the air duct 20 to the air outlet end, the distance between the second air guide portion 2212 and the central axis of the air duct 20 has at least a increasing trend, and the other part increases synchronously or remains unchanged. The first air guide portion 2211 and the second air guide portion 2212 are arranged circumferentially around the central axis of the air duct 20 and are connected to each other.

[0036] Specifically, the air blower 20 is disposed on the handle, the length of the handle extends vertically, and the length of the air blower 20 extends horizontally and is perpendicular to the handle. The air outlet duct 22 is circumferentially disposed outside the central axis of the air blower 20. When using the care appliance to care for an object, the user can hold the handle and point the air outlet end of the air outlet duct 22 toward the surface of the object to be cared for, so that the airflow from the air outlet end of the air outlet duct 22 can blow onto the surface of the object to be cared for. This utility model embodiment can be a hair dryer, hair styling tool, or other care appliance with an air outlet.

[0037] Furthermore, in the prior art, the air outlet duct generally outlets air only along the axial direction of the duct. This unidirectional airflow results in a concentrated air outlet surface, higher wind speed, and greater noise. Therefore, in this embodiment of the invention, a guide section 221 is provided on the wall inside the duct 20 corresponding to the air outlet end of the air outlet duct 22. The guide section 221 includes a first guide section 2211 and a second guide section 2212. The first guide section 2211 is a guide slope, and the distance between the first guide section 2211 and the central axis of the duct 20 has at least a decreasing trend, while the other part decreases synchronously or remains unchanged; and / or the second guide section 2212 is a guide slope, and in the direction of airflow from the duct 20 towards the air outlet end, the distance between the second guide section 2212 and the central axis of the duct 20 has at least a increasing trend, while the other part increases synchronously or remains unchanged. The first guide section 2211 and the second guide section 2212 are arranged circumferentially and connected to each other.

[0038] Specifically, at least a portion of the first air guide 2211 of the air guide 221 causes the airflow from the outlet channel 22 to radially converge inward, and at least a portion of the second air guide 2212 of the air guide 221 causes the airflow from the outlet channel 22 to radially diffuse outward. This arrangement can guide the airflow that was originally more dispersed or blown out in the conventional direction to a specific radially inner area, thereby expanding the coverage of the airflow and avoiding the situation where the airflow is too concentrated in a single direction, resulting in no airflow in some areas or directions. This allows the entire airflow area to be more evenly covered by airflow in the radial direction, which helps to improve the efficiency and uniformity of the overall ventilation, heat dissipation or air conditioning of the equipment.

[0039] It should be noted that radial outward refers to the direction that is radially away from the central axis of the duct 20, while radial inward refers to the direction that is radially closer to the central axis of the duct 20.

[0040] Furthermore, by configuring at least a portion of the first air guide 2211 and / or the second air guide 2212 as a guide slope, the slope can make the airflow of the air outlet channel 22 smoother while changing the air outlet direction. This effectively guides the airflow of the air outlet channel 22 and avoids the impact noise generated by the airflow rushing irregularly and at high speed towards the surrounding structure at the moment of air outlet. By guiding the airflow smoothly in the desired direction through the guide slope, the additional noise generated by the airflow impact can be reduced accordingly, thereby improving the nursing experience of the nursing device.

[0041] In some embodiments of this utility model, combined with Figure 13 As shown, a portion of the first air guide 2211 is an air guide slope, and the other portion is an air guide arc surface; and / or a portion of the first air guide 2211 is an air guide slope, and the other portion is an air guide arc surface. In this embodiment, the air guide arc surface of the first air guide 2211 and / or the second air guide 2212 can be located at the end of the air guide slope closest to the air outlet end of the air outlet channel 22. This is partly due to process requirements, and partly to prevent the ends of the first air guide 2211 and the second air guide 2212 closest to the air outlet end of the air outlet channel 22 from being sharp and scratching the user.

[0042] Furthermore, in this embodiment, in the direction of airflow from the air duct 20 to the outlet, the distance between the guide slope in the first guide section 2211 and the central axis of the air duct 20 tends to decrease, and the distance between the guide arc surface in the first guide section 2211 and the central axis of the air duct 20 decreases synchronously, or the distance between the guide arc surface in the first guide section 2211 and the central axis of the air duct 20 remains unchanged; the distance between the guide slope in the second guide section 2212 and the central axis of the air duct 20 tends to decrease, and the distance between the guide arc surface in the second guide section 2212 and the central axis of the air duct 20 decreases synchronously, or the distance between the guide arc surface in the second guide section 2212 and the central axis of the air duct 20 remains unchanged.

[0043] Of course, the air guiding arc surfaces of the first air guiding section 2211 and / or the second air guiding section 2212 can also be located at other positions on the air guiding slope, and can be selectively set according to different needs, which is not limited here.

[0044] In some other embodiments of the present invention, the first air guide 2211 is entirely an air guide slope; and / or the second air guide 2212 is entirely an air guide slope.

[0045] In some other embodiments of this utility model, the first air guide 2211 and / or the second air guide 2212 may also be entirely air guide arc surfaces.

[0046] Combination Figures 5-11As shown, the air outlet channel 22 is circumferentially arranged around the central axis of the air duct 20. The air duct 20 has an inner air outlet wall surface 224 and an outer air outlet wall surface 225 inside. The air outlet channel 22 is located between the inner air outlet wall surface 224 and the outer air outlet wall surface 225. At least one of the inner air outlet wall surface 224 and the outer air outlet wall surface 225 is provided with an extended air guide 221 at the air outlet end corresponding to the air outlet channel 22.

[0047] In some embodiments of this utility model, combined with Figures 4-8 As shown, when the air guide 221 is only provided on the inner wall surface 224 of the air outlet, the first air guide 2211 can cause the air outlet airflow of the air outlet channel 22 to be radially drawn inward, and the second air guide 2212 can cause the air outlet airflow of the air outlet channel 22 to be radially diffused outward.

[0048] When the air guide 221 is only provided on the outer wall surface 225 of the air outlet, the first air guide 2211 can cause the air outlet airflow of the air outlet channel 22 to be radially drawn inward, and the second air guide 2212 can cause the air outlet airflow of the air outlet channel 22 to be radially diffused outward.

[0049] Furthermore, by providing a guide section 221 at the air outlet end of one of the air outlet inner wall surface 224 and the air outlet outer wall surface 225 corresponding to the air outlet channel 22, under the premise of ensuring that the air outlet directions of the air outlet channel 22 are different, not only can the air outlet area of ​​the air duct 20 be improved to the maximum extent, but also the air outlet fluid turbulence of the air outlet channel 22 can be prevented.

[0050] In other embodiments of this utility model, combined with Figure 9 and Figure 10 As shown, the air outlet inner wall surface 224 and the air outlet outer wall surface 225 are both provided with air guides 221 at the air outlet ends of the air outlet channel 22.

[0051] Specifically, when both the inner wall surface 224 and the outer wall surface 225 of the air outlet are provided with air guides 221, the first air guides 2211 of the outer wall surface 225 and the inner wall surface 224 of the air outlet correspond to each other in the radial direction. The first air guides 2211 can cause the airflow of the air outlet channel 22 to be radially gathered inward. The second air guides 2212 of the outer wall surface 225 and the inner wall surface 224 of the air outlet correspond to each other in the radial direction. The second air guides 2212 can cause the airflow of the air outlet channel 22 to be radially diffused outward.

[0052] It should be noted that the air guide section 221 can extend continuously around the circumference of the inner wall surface 224 and / or the outer wall surface 225 of the air outlet, or it can be located only in the circumferential part of the inner wall surface 224 and / or the outer wall surface 225 of the air outlet. The first air guide section 2211 and the second air guide section 2212 can also be disconnected. There is no limitation here, and they can be selectively set according to production costs and process requirements.

[0053] In other embodiments of this utility model, combined with Figure 11 and Figure 12 As shown, when both the inner wall surface 224 and the outer wall surface 225 of the air outlet are provided with air guides 221, the first air guide 2211 on the outer wall surface 225 and the second air guide 2212 on the inner wall surface 224 can correspond to each other at least partially in the radial direction. The second air guide 2212 on the outer wall surface 225 and the first air guide 2211 on the inner wall surface 224 can correspond to each other at least partially in the radial direction. This allows the air outlet channel 22 to blow air in two directions simultaneously in the radial direction, which can make the airflow diffusion range larger.

[0054] Combination Figures 5-10 As shown, the extension line connecting the two ends of the first air guide 2211 forms an angle α with the central axis of the air duct 20, where α satisfies the relationship: 0 < α < 60°; and / or the extension line connecting the two ends of the second air guide 2212 forms an angle β with the central axis of the air duct 20, where β satisfies the relationship: 0 < β < 60°.

[0055] Specifically, by limiting the angle α formed between the extension line of the first air guide 2211 and the central axis of the air duct 20 to within 0 to 60°, and limiting the angle β formed between the extension line of the second air guide 2212 and the central axis of the air duct 20 to within 0 to 60°, the angles α and / or β can be kept within a reasonable range. This ensures that the air duct 20 of the nursing device can expand the coverage of the airflow, while preventing excessively large angles α and / or β from causing the airflow coverage of the nursing device to be too large, resulting in the airflow blowing towards areas far from the object being cared for, causing undesirable effects on objects in those areas. Furthermore, excessively large angles α and / or β can also lead to excessive wind noise from the airflow.

[0056] In a specific embodiment of this utility model, the preferred angles of included angle α and / or included angle β can be 25°~35°. This not only ensures that the coverage of the airflow is reasonable and will not affect objects in the distant area around the object being cared for, but also controls the wind noise of the airflow to be within a reasonable range. With this setting, the balance between the coverage of the airflow and the wind noise of the airflow of the nursing device can be controlled, and the structural design of the nursing device can be optimized.

[0057] It should be noted that, in combination Figure 13As shown, since the first air guide 2211 and / or the second air guide 2212 are at least partially air guide slopes, when the first air guide 2211 and / or the second air guide 2212 are entirely air guide slopes, the line connecting the two ends of the first air guide 2211 and the second air guide 2212 is the air guide slope. When a part of the first air guide 2211 and / or the second air guide 2212 is an air guide slope and the other part is an air guide arc, the air guide arc will be located at the end of the air guide slope closest to the air outlet end of the air outlet channel 22. At this time, the line connecting the two ends of the first air guide 2211 and / or the second air guide 2212 is the line connecting the two ends of the air guide slope, excluding the part of the air guide arc.

[0058] In some embodiments of this utility model, the air guide 221 includes at least one first air guide 2211 and / or at least one second air guide 2212, which extend circumferentially and are staggered. Specifically, by staggering the at least one first air guide 2211 and at least one second air guide 2212 circumferentially, the change in the air outlet direction of the airflow channel 22 becomes staggered and regular, making the radial inward convergence and outward diffusion of the airflow from the air outlet channel 22 more continuous and uniform. This staggered distribution avoids the uneven local airflow intensity that may occur due to concentrated single-direction airflow, ensuring a more stable velocity and pressure distribution of the airflow throughout the circumferential range, and effectively reducing the formation of local turbulence and backflow areas caused by uneven airflow. This, in turn, improves the operational reliability of the nursing device.

[0059] In embodiments of this utility model, the included angle α is not exactly the same at each circumferential extension of the first air guide 2211; and / or the included angle β is not exactly the same at each circumferential extension of the second air guide 2212.

[0060] Specifically, by ensuring that the angle α between each part of the first air guide 2211 and the central axis of the air duct 20 is not exactly the same in the circumferential extension direction of each first air guide 2211, while ensuring that the first air guide 2211 radially gathers the airflow of the air outlet duct 22 inward, the first air guide 2211 can guide the airflow radially inward within a limited range to different directions, which can ensure that the airflow radially gathers inward and covers more evenly, and can further improve the efficiency and uniformity of ventilation, heat dissipation or air conditioning of the nursing equipment.

[0061] By ensuring that the angle β between each part of the second air guide 2212 and the central axis of the air duct 20 is not exactly the same in the circumferential extension direction of each second air guide 2212, while ensuring that the second air guide 2212 diffuses the airflow of the air outlet duct 22 radially outward, the second air guide 2212 can guide the airflow of the air outlet radially outward within a limited range to different directions. This can ensure that the airflow of the air outlet radially outward diffuses and covers more evenly, and can further improve the efficiency and uniformity of ventilation, heat dissipation or air conditioning of nursing equipment.

[0062] In embodiments of this utility model, the included angle α decreases in the direction of the first air guide 2211 near the second air guide 2212; and / or the included angle β decreases in the direction of the second air guide 2212 near the first air guide 2211.

[0063] Specifically, since the first air guide 2211 and the second air guide 2212 extend circumferentially and intersect each other, in order to prevent the airflow direction from changing abruptly and drastically between the first air guide 2211 and the second air guide 2212 due to their completely different air guide directions, which would lead to airflow turbulence, this invention reduces the included angle α in the direction of the first air guide 2211 near the second air guide 2212, and reduces the included angle β in the direction of the second air guide 2212 near the first air guide 2211. This allows the air guide directions of the first air guide 2211 and the second air guide 2212 to gradually approach each other at their respective positions. This results in a slower and more stable change in the airflow direction in the circumferential direction, making the airflow more stable and further reducing the noise of the airflow.

[0064] Combination Figure 2 As shown, the air duct 20 is provided with an air outlet 21. The air outlet 21 is arranged circumferentially around the outside of the central axis of the air duct 20 and is connected to the air outlet channel 22. The inner and / or outer ring sides of the air outlet 21 are curved. Further, for example, it is at least one of wave shape or flower shape, wherein the flower shape can be a relatively regular curve, and the wave shape can be an irregular concave and convex curve.

[0065] Specifically, due to the shape of the first air guide 2211 and the second air guide 2212, the inner and / or outer rings of the air outlet 21 can be wavy or floral-shaped, at least one of these shapes. This special shape allows for more precise distribution and guidance of airflow according to the air outlet characteristics of the air outlet channel 22. In the wavy or floral structure, the different protrusions and recesses can be considered as multiple small air guide units, which can divide the airflow into multiple fine streams with precisely controllable directions. Furthermore, from the user's perspective, the wavy and floral-shaped air outlets 21 add a unique visual element to the care appliance, making it stand out among many similar products and possessing high aesthetic value and product recognition.

[0066] Combination Figure 4 As shown, the air outlet duct 22 has a sound-absorbing component 223 installed on its duct wall. Specifically, by installing the sound-absorbing component 223 in the duct wall of the air outlet duct 22, the sound-absorbing component 223 can reduce the wind noise flowing from the air outlet duct 22 to the air outlet 21, which can further improve the user's experience of using the nursing device.

[0067] In some embodiments of this utility model, combined with Figure 4 As shown, the outer wall surface 225 of the air outlet is provided with a silencing hole, and the inner side of the outer wall surface 225 of the air outlet is provided with a silencing groove 222. The silencing component 223 is disposed in the silencing groove 222, and the silencing hole is connected to the silencing groove 222.

[0068] Specifically, by providing silencing holes 226 on the outer wall surface 225 of the air outlet and silencing grooves 222 inside the outer wall surface 225 of the air outlet, and placing the silencing component 223 in the silencing groove 222, the airflow can enter the silencing groove 222 through the silencing holes 226. When the nursing device generates airflow during operation, the airflow can smoothly enter the silencing groove 222 through the silencing holes 226. The silencing component 223 is made of melamine foam material with excellent sound absorption performance. Its interior has a large number of uniformly distributed and interconnected micropores. This unique microstructure gives it a large specific surface area, which can efficiently capture and consume the energy of the airflow and efficiently absorb the energy of the airflow. This energy absorption mechanism reduces the generation of high-frequency noise at the source and greatly optimizes the acoustic performance of the equipment. It brings users a better and relatively quiet user experience.

[0069] Furthermore, the silencing hole 226 does not interfere with fluid flow, and can reduce noise generation without increasing airflow resistance, and effectively improve the smoothness of airflow. This not only further reduces the noise of the airflow, but also, since the silencing component 223 is not inside the airflow channel 22, it will not affect the normal airflow of the airflow in the airflow channel 22.

[0070] In some other embodiments of this utility model, the radial inner channel wall of the air outlet channel 22 may also be provided with a sound-absorbing hole 226, and the interior of the radial inner channel wall of the air outlet channel 22 may also be provided with a sound-absorbing groove 222. The sound-absorbing component 223 may also be provided in the sound-absorbing groove 222 inside the radial inner channel wall of the air outlet channel 22.

[0071] Combination Figure 3 As shown, the air duct 20 includes a cylinder 23 and an air hood 24. The air hood 24 is disposed at one end of the cylinder 23 and includes an outer cover 241 and a guide 242. The outer cover 241 is circumferentially covered on the outside of the guide 242. The outer cover 241 and the guide 242 are spaced apart. The first air outlet channel 22 is located between the outer cover 241 and the guide 242. The outer cover 241 and the guide 242 are respectively connected to the cylinder 23.

[0072] Specifically, the outer cover 241 is circumferentially covered on the outside of the guide 242. By arranging the outer cover 241 and the guide 242 radially spaced apart, and placing the first air outlet channel 22 between the outer cover 241 and the guide 242, since the outer cover 241 and the guide 242 are respectively connected to the cylinder 23, there are no connecting parts between the outer cover 241 and the guide 242. There are no connecting parts between the outer cover 241 and the guide 242 that would obstruct or affect the airflow of the first air outlet channel 22. Not only will there be no noise generated by the airflow hitting the connecting parts, but it can also reduce the generation of eddies and improve the stability and uniformity of the airflow.

[0073] It should be noted that the surface of the guide 242 facing the object can be a bowl-shaped concave surface or a flat surface, neither of which will affect the airflow direction of the air outlet 21.

[0074] Combination Figure 4 As shown, the air duct 20 includes an outer shell 243 and an air inlet 244. The outer shell 243 is circumferentially covered on the outside of the air inlet 244 and spaced apart from the air inlet 244. A first air inlet 28 is provided between the outer shell 243 and the air inlet 244. A second air inlet 28 is provided on the circumferential side wall of the air inlet 244. The air outlet duct 22 is connected to both the first air inlet 27 and the second air inlet 28.

[0075] Specifically, the outer casing 243 is circumferentially covered on the outside of the air inlet 244, and the outer casing 243 and the air inlet 244 are spaced apart. The first air inlet 27 is located between the outer casing 243 and the air inlet 244. After the external airflow enters the air outlet duct 22 from the first air inlet 27 and flows out from the air outlet 21, a negative pressure will be formed near the first air inlet 27 at one end of the air duct 20. Thus, by opening a second air inlet 28 on the circumferential side wall of the air inlet 244, the external airflow can enter the second air inlet 28 at the same time as entering the first air inlet 27. This can increase the air intake of the nursing device per unit time without changing the volume of the nursing device, without increasing the internal components, and without increasing the energy consumption, thereby indirectly improving the nursing efficiency of the nursing device.

[0076] In a specific embodiment of this utility model, the second air inlet 28 can be circumferentially extended on the side wall of the air inlet 244. There can be two second air inlets 28, which can be spaced apart and arranged opposite to each other.

[0077] In an embodiment of this utility model, at least one layer of grille is provided on the second air inlet 28. The grille can be configured as an air inlet grille, which can filter dust and foreign objects in the external airflow and prevent dust and foreign objects, such as hair, in the external airflow from entering the air outlet channel and affecting the normal operation or heat dissipation of the components inside the air duct.

[0078] In a specific embodiment of this utility model, the second air inlet 28 is provided with two layers of air inlet grilles. The two layers of air inlet grilles can be staggered, which can improve the filtration effect on external dust and foreign objects without excessively affecting the air intake of the second air inlet 28.

[0079] The nursing device of the second aspect of this utility model can mainly include the above-mentioned air duct 20. Applying the air duct 20 to the nursing device can expand the coverage of the airflow of the nursing device, thereby avoiding the situation where the airflow is too concentrated in one direction, causing other surrounding areas to be unable to be effectively ventilated. This can not only increase the nursing area per unit time and improve the nursing efficiency of the nursing device, but also make the airflow of the nursing device gentler and reduce the wind noise of the nursing device.

[0080] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are 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.

[0081] 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., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0082] Although embodiments of the present invention 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 the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wind tube of a care appliance, characterized in that, an air outlet flow channel is arranged inside the wind tube, a wall surface of the wind tube corresponding to an air outlet end of the air outlet flow channel is provided with a wind guide part, the wind guide part comprises a first wind guide part and a second wind guide part, the first wind guide part is at least partially a wind guide inclined surface, in the direction of the airflow of the wind tube flowing to the air outlet end, at least part of the distance between the first wind guide part and the central axis of the wind tube has a decreasing trend, and the other part is synchronously decreasing or unchanged; and / or the second wind guide part is at least partially a wind guide inclined surface, in the direction of the airflow of the wind tube flowing to the air outlet end, at least part of the distance between the second wind guide part and the central axis of the wind tube has an increasing trend, and the other part is synchronously increasing or unchanged, the first wind guide part and the second wind guide part are arranged circumferentially around the central axis of the wind tube and connected to each other.

2. A care appliance air duct according to claim 1, characterized in that The air outlet flow channel is circumferentially arranged around the central axis of the wind tube, the inside of the wind tube has an air outlet inner wall surface and an air outlet outer wall surface, the air outlet flow channel is located between the air outlet inner wall surface and the air outlet outer wall surface, and at least one of the air outlet inner wall surface and the air outlet outer wall surface is provided with an extended wind guide part corresponding to the air outlet end of the air outlet flow channel.

3. A care appliance air duct according to claim 2, characterised in that An angle α is formed between the extension line of the connecting line of the two ends of the first wind guide part and the central axis of the wind tube, and α satisfies the relationship: 0 < α < 60°; and / or An angle β is formed between the extension line of the connecting line of the two ends of the second wind guide part and the central axis of the wind tube, and β satisfies the relationship: 0 < β < 60°.

4. A care appliance air-wick according to claim 3, characterised in that, The wind guide part comprises at least one first wind guide part and / or at least one second wind guide part, the first wind guide part and the second wind guide part extend circumferentially and are arranged alternately.

5. A care appliance air-wick according to claim 4, characterised in that, At each circumferential extension of the first wind guide part, the angle α is not completely the same; and / or At each circumferential extension of the second wind guide part, the angle β is not completely the same.

6. A care appliance air-wick according to claim 5, wherein, In the direction of the first wind guide part approaching the second wind guide part, the angle α decreases; and / or in the direction of the second wind guide part approaching the first wind guide part, the angle β decreases.

7. A care appliance air-wick according to claim 2, characterised in that The wind tube is provided with an air outlet, the air outlet is circumferentially arranged around the central axis of the wind tube and communicates with the air outlet flow channel, and the inner circle side and / or the outer circle side of the air outlet is arranged in a curved shape.

8. A care appliance air-wick according to claim 2, characterised in that, The wind tube comprises a shell member and an air inlet member, the shell member is circumferentially covered on the outside of the air inlet member and is arranged in a spaced manner with the air inlet member, a first air inlet is arranged between the air inlet member and the air inlet member, a second air inlet is arranged on the circumferential side wall of the air inlet member, and the air outlet flow channel communicates with the first air inlet and the second air inlet.

9. A care appliance air-wick according to claim 8, characterised in that, At least one layer of grating is arranged on the second air inlet.

10. A care appliance, characterized in that Comprise: The wind tube of the care appliance according to any one of claims 1-9.

Images