Drainage devices and nursing equipment

Abstract

This utility model discloses a flow guide component, comprising: a flow guide end plate; an overlapping plate, the overlapping plate being spaced apart from the flow guide end plate; and flow guide side plates, each flow guide side plate connecting the corresponding ends of the flow guide end plate and the overlapping plate, wherein the flow guide end plate, the overlapping plate, and the flow guide side plates define a flow guide space; wherein the projected area of ​​the overlapping plate in the depth direction of the flow guide component is smaller than the projected area of ​​the flow guide end plate in the depth direction of the flow guide component. The flow guide component according to the embodiment of this utility model can increase the flow volume while ensuring the flow guide effect, reduce flow guide noise, and improve the user experience. This utility model also discloses a nursing device including this flow guide component.

Description

Technical Field

[0001] This utility model relates to the field of nursing technology, and in particular to a flow guide and nursing device. Background Technology

[0002] Currently, nursing devices often have airflow guiding structures to direct airflow in the appropriate direction in order to achieve airflow guidance at multiple angles.

[0003] However, these airflow structures generally result in a significant decrease in the airflow of nursing devices, making it impossible to provide sufficient airflow and velocity at multiple angles, thus limiting the practicality of nursing devices and the user experience.

[0004] Therefore, there is an urgent need to provide a diversion solution for improving nursing care devices in order to enhance the user experience of these devices.

[0005] The background description is provided for the purpose of understanding the relevant technologies in this field and is not intended as an admission of prior art. Utility Model Content

[0006] In this regard, the present invention aims to provide a flow guide and a nursing device having the flow guide, thereby improving the overall flow guiding effect of the nursing device, increasing the flow volume and reducing the flow noise.

[0007] In some embodiments of this utility model, a flow guide for a nursing device is provided, which may include:

[0008] Guide end plate;

[0009] An overlap plate, wherein the overlap plate is spaced apart from the flow guide plate;

[0010] The flow guide side plate is connected between the corresponding ends of the flow guide end plate and the overlapping plate, and defines a flow guide space between the flow guide end plate, the overlapping plate and the flow guide side plate;

[0011] Wherein, the projected area of ​​the overlapping plate in the depth direction of the guide member is smaller than the projected area of ​​the guide end plate in the depth direction of the guide member.

[0012] In some embodiments of this invention, at least one arc-shaped notch is formed on the top of the overlapping plate.

[0013] In some embodiments of this utility model, the height of the arc-shaped notch is greater than the distance from the bottom of the arc-shaped notch to the lower edge of the overlapping plate.

[0014] In some embodiments of this utility model, the height of the overlapping plate is less than 20% of the height of the guide plate.

[0015] In some embodiments of this utility model, the flow guide further includes at least one flow guide baffle, which intersects with the overlapping plate to form a predetermined angle and divides the flow guide space into multiple parallel flow guide channels.

[0016] In some embodiments of this utility model, the flow guide baffle is perpendicular to the overlapping plate.

[0017] In some embodiments of this utility model, the flow guide is disposed in the hinge assembly of the nursing device.

[0018] In some embodiments of this utility model, the flow guiding end plate has an arc-shaped concave surface facing the flow guiding space, and the overlapping plate has an arc-shaped convex surface facing the flow guiding space; and the width extension direction of the overlapping plate is approximately parallel to the width extension direction of the flow guiding end plate.

[0019] In some embodiments of this utility model, the outer side of the flow guide plate has a snap-fit ​​portion, and the snap-fit ​​portion is lower than the lower edge of the overlapping plate.

[0020] In some embodiments of the present invention, a nursing device is also provided, which may include the flow guide described in the embodiments of the present invention.

[0021] In some embodiments of this utility model, the nursing device is a bendable nursing device, and the nursing device further includes:

[0022] A handle, wherein a first fluid channel is formed within the handle;

[0023] A ventilation duct, wherein a second fluid channel is formed inside the ventilation duct, and the first fluid channel is connected to the second fluid channel;

[0024] A hinge assembly connects the handle and the air blower to allow the air blower to switch between a straight and bent state of the nursing device relative to the handle, wherein, in the straight state of the nursing device, the air blower and the handle extend in parallel directions, and in the bent state of the nursing device, the air blower and the handle extend at a predetermined angle.

[0025] A fan assembly, wherein the fan assembly is disposed within the first fluid channel;

[0026] The flow guide is disposed between the handle of the nursing device and the air duct, and is used to guide fluid from the handle into the air duct.

[0027] In some embodiments of this utility model, in the bent flow guiding state, the overlapping plate is close to the inner corner area formed by the air duct and the handle, and the flow guiding end plate is close to the outer corner area formed by the air duct and the handle.

[0028] In some embodiments of this utility model, in the straight state of the nursing device, the extension line of the central axis of the handle extends through the flow guiding space and does not intersect with the flow guiding end plate and the overlapping plate; in the bent state of the nursing device, the extension line of the central axis of the handle intersects with the flow guiding end plate but does not intersect with the overlapping plate.

[0029] In some embodiments of this utility model, when the nursing device is bent, the projections of the guide plate and the overlapping plate along the length extension direction of the handle do not overlap at least partially.

[0030] In some embodiments of this utility model, the flow guide is connected to the air duct or the hinge assembly and switches between a straight flow guide state and a bent flow guide state as the bending angle of the air duct relative to the handle changes.

[0031] In some embodiments of this utility model, the flow guide is the flow guide according to the embodiments of this utility model, wherein the flow guide baffle is parallel to the plane jointly determined by the central axis of the handle and the central axis of the air duct.

[0032] The airflow guide provided by this utility model, through the spacing between the airflow guide end plate and the overlapping plate, and the cooperation of the airflow guide side plate, jointly defines an efficient three-dimensional airflow guide space, effectively suppressing turbulence and backflow phenomena during airflow and reducing the noise level of nursing instruments during use. Simultaneously, the overlapping plate design with a low cross-sectional area in the depth direction of the airflow guide achieves low airflow resistance when the airflow enters the airflow guide space, thereby reducing kinetic energy loss during airflow turning in multi-angle working states, especially in bending states. This provides ideal airflow and velocity for the nursing instruments in bending states, improving the overall user experience and practicality of the product.

[0033] Other optional features and technical effects of the embodiments of this utility model are partly described below and partly apparent from reading this document. Attached Figure Description

[0034] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The elements shown are not limited to the scale shown in the drawings, and the same or similar reference numerals in the drawings denote the same or similar elements, wherein:

[0035] Figure 1 This is an exemplary structural perspective view of the guide member according to an embodiment of the present utility model;

[0036] Figure 2 This is an exemplary structural side view of the guide member according to an embodiment of the present utility model;

[0037] Figure 3This is an exemplary structural front view of the guide member according to an embodiment of the present utility model;

[0038] Figure 4 This is a top view of an exemplary structure of a flow guide according to an embodiment of the present utility model;

[0039] Figure 5 This is an exemplary structural perspective view of the flow guide according to an embodiment of the present utility model;

[0040] Figure 6 This is an exemplary structural side view of the guide member according to an embodiment of the present utility model;

[0041] Figure 7 This is an exemplary structural front view of the guide member according to an embodiment of the present utility model;

[0042] Figure 8 This is a top view of an exemplary structure of a flow guide according to an embodiment of the present utility model;

[0043] Figure 9 This is an exemplary structural perspective view of the guide member according to an embodiment of the present utility model;

[0044] Figure 10 This is an exemplary structural side view of the guide member according to an embodiment of the present utility model;

[0045] Figure 11 This is an exemplary structural front view of the guide member according to an embodiment of the present utility model;

[0046] Figure 12 This is a top view of an exemplary structure of a flow guide according to an embodiment of the present utility model;

[0047] Figure 13 This is an exemplary structural perspective view of the nursing device according to an embodiment of the present invention in a cylindrical state;

[0048] Figure 14 This is an exemplary structural perspective view of a nursing device in a bent state according to an embodiment of the present utility model;

[0049] Figure 15 This is an exemplary first structural cross-sectional view of a nursing device according to an embodiment of the present invention in a straight cylindrical state, showing the guide member provided according to an embodiment of the present invention;

[0050] Figure 16 This is an exemplary first structural cross-sectional view of a nursing device according to an embodiment of the present invention in a bent state, showing the guide member provided according to an embodiment of the present invention;

[0051] Figure 17This is an exemplary second structural cross-sectional view of a nursing device according to an embodiment of the present invention in a straight cylindrical state, showing the guide member provided according to an embodiment of the present invention;

[0052] Figure 18 This is an exemplary second structural cross-sectional view of a nursing device according to an embodiment of the present invention in a bent state, showing the guide member provided according to an embodiment of the present invention;

[0053] Figure 19 This is an exemplary third structural cross-sectional view of a nursing device in a straight cylindrical state according to an embodiment of the present invention, showing the guide member provided according to an embodiment of the present invention;

[0054] Figure 20 This is an exemplary third structural cross-sectional view of a nursing device according to an embodiment of the present invention in a bent state, showing the guide member provided according to an embodiment of the present invention;

[0055] Figure 21 This is an exemplary structural cross-sectional view of a nursing device according to an embodiment of the present invention, wherein a guide member according to an embodiment of the present invention is provided.

[0056] Figure label:

[0057] 100. Nursing equipment;

[0058] 10. Handle; 11. First fluid channel; 12. Air inlet; 13. Handle central axis;

[0059] 20. Air duct; 21. Second fluid channel; 22. Air outlet; 23. Central axis of the air duct;

[0060] 30. Hinge assembly; 31. Through hole; 32. Interior corner area; 33. Exterior corner area;

[0061] 40. Flow guide; 41. Flow guide end plate; 42. Overlap plate; 43. Flow guide side plate; 44. Flow guide baffle; 45. Arc-shaped notch; 46. Arc-shaped section; 47. Snap-fit ​​part;

[0062] 50. Fan components. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this utility model are used to explain the present utility model, but are not intended to limit the present utility model.

[0064] In this embodiment of the invention, unless otherwise explicitly stated, the terms "upstream" and "downstream" should be understood as terms referring to the relative positional relationship based on the direction of fluid flow. Specifically, taking the flow path of the fluid in the nursing device as a reference, along the flow direction of the fluid from the air inlet to the air outlet, the side closer to the air inlet is defined as "upstream," and the side closer to the air outlet is defined as "downstream." Furthermore, the term "straight cylinder state" refers to a structural state in which the central axis of the air cylinder and the handle are arranged approximately parallel, while "bent state" refers to a structural state in which the central axis of the air cylinder and the handle forms a predetermined angle.

[0065] As mentioned earlier, existing nursing devices typically employ simple airflow guiding structures to direct airflow in a predetermined direction at multiple angles. However, while these simple structures achieve airflow redirection, they often introduce significant technical drawbacks: firstly, they generate considerable resistance when guiding airflow, leading to a substantial decrease in air volume, especially noticeable when the device is bent; secondly, airflow easily forms turbulence and eddies as it passes through these simple structures, further reducing airflow guidance efficiency and generating significant noise. These problems severely impact the practicality and user experience of nursing devices, particularly reducing airflow and velocity when the device is bent, and significantly increasing noise levels.

[0066] To address this, this embodiment of the invention provides a flow guide 40 for a nursing device, which is suitable for maintaining a low noise level and guiding airflow to provide strong wind power in various working angles. (Reference) Figures 1 to 12 The diagram shows a guide member 40 according to an embodiment of this application.

[0067] In some embodiments of this utility model, reference is made to Figures 1 to 12 The flow guide 40 may include a flow guide end plate 41, an overlap plate 42, and a flow guide side plate 43.

[0068] In some embodiments, reference Figure 1 , Figure 5 as well as Figure 9 The overlapping plate 42 and the guide plate 41 are spaced apart. In some embodiments, refer to... Figure 2 The guide plate 41 is constructed to include an arc-shaped plate that guides the airflow in the direction of airflow. The arc-shaped guide plate facilitates a smooth transition of the airflow direction and reduces flow loss.

[0069] In some embodiments, reference Figure 1 , Figure 5 as well as Figure 9Multiple guide side plates 43, such as two guide side plates 43, are respectively disposed between the corresponding ends of the guide end plate 41 and the overlapping plate 42, and define a guide space between the guide end plate 41, the overlapping plate 42, and the multiple guide side plates 43. This three-dimensional structure design with spacing allows the guide component to form a three-dimensional guide space with a certain spatial depth. Compared with a single guide surface structure, it can achieve more complex and precise airflow guidance, effectively improving the stability of the airflow. In some embodiments, in this three-dimensional structure design, the overlapping plate 42 not only serves to connect the guide structure, but also forms a structural reinforcement component, improving the mechanical stability and deformation resistance of the guide component 40. At the same time, the overlapping plate 42, as an auxiliary guide surface, can effectively adjust the airflow distribution characteristics, reduce the negative pressure area that may be formed behind the guide end plate 41, thereby suppressing potential airflow turbulence. The airflow velocity distribution guided by this multi-layer structure is more uniform, which helps to improve the user's comfort experience. In some embodiments, the overlapping plate 42 and the guide end plate 41 can be tilted. Figure 2 In the embodiment shown, the tilt angle between the overlapping plate 42 and the flow guide plate 41 and the depth direction D of the flow guide 40 is, for example, in the range of 50° to 70°, and optionally in the range of 55° to 65°.

[0070] In some embodiments, reference Figures 1 to 3 , Figures 5 to 7 , Figures 9 to 11 The guide plate 41 and the overlapping plate 42 can, for example, guide the airflow flowing from bottom to top through the guide space along the height direction H of the guide member 40, allowing the airflow to flow smoothly through the guide member 40 with its flow direction remaining essentially unchanged and with almost no loss of kinetic energy. In some embodiments, the guide plate 41 may have an arcuate concave surface facing the guide space, and the overlapping plate 42 may have an arcuate convex surface facing the guide space, with the width extension direction of the overlapping plate 42 being approximately parallel to the width extension direction of the guide plate 41. Thus, by means of the arcuate concave surfaces of the guide plate 41 and the overlapping plate 42, the kinetic energy loss of the airflow flowing in the opposite direction of the depth direction D of the guide member 40 when turning towards the guide plate 41 and the overlapping plate 42 can be reduced, ensuring that the airflow after turning still has considerable wind speed and volume.

[0071] In some embodiments of this utility model, reference is made to Figure 3 The projected area of ​​the overlapping plate 42 in the depth direction D of the guide member is smaller than the projected area of ​​the guide end plate 41 in the depth direction D of the guide member. In some embodiments, the orthographic projection of the overlapping plate 42 in the depth direction D of the guide member may optionally fall within the orthographic projection range of the guide end plate 41.

[0072] The following will combine the content of the above embodiments with the appendix. Figures 1 to 4 Appendix Figures 5 to 8 and appendix Figures 9 to 12The guide element 40 of several embodiments of the present invention is further described.

[0073] In some embodiments of this utility model, reference is made to Figure 1 , Figure 3 and Figure 4 In this embodiment, at least one, for example two, arc-shaped notches 45 are formed on the top of the overlap plate 42. The arc-shaped notches 45 have arc-shaped openings facing the top of the overlap plate 42, providing additional channels for airflow through the overlap plate 42. This reduces the flow resistance encountered by the airflow at the overlap plate 42, allowing the airflow to continue smoothly along the depth direction D of the guide member 40 to the guide end plate 41. With the guidance of the guide end plate 41, the airflow can be redirected, thereby improving the guiding efficiency while achieving efficient redirection and reducing airflow loss. Thus, a portion of the airflow flowing along the depth direction D of the guide member 40 towards the overlap plate 42 can continue to flow to the guide end plate 41 and be redirected with the guidance of the guide end plate 41. In an optional embodiment, the arc-shaped notches 45 can also be used to support cables inside the nursing device that need to pass through the guide member 40, providing support and preventing cable tangling.

[0074] In other embodiments of this utility model, reference is made to Figures 5 to 8 Compared to Figures 1 to 4 In the illustrated embodiment, the height of the arc-shaped notch 45 is greater than the distance from the bottom of the arc-shaped notch 45 to the lower edge of the overlap plate 42. Here, the height of the arc-shaped notch 45 is characterized, for example, by the height of the projection of the arc-shaped notch 45 onto the depth direction D of the guide member 40. A higher arc-shaped notch 45 allows airflow to pass through the overlap plate 42 with less resistance and quickly enter the guide space. This enables the airflow guided by the guide end plate 41 to precisely reach a predetermined angle, ensuring stable output of wind speed and volume. In this embodiment, reference... Figure 6 The height h1 of the arc-shaped notch 45 is greater than the distance h2 from the bottom of the arc-shaped notch 45 to the lower edge of the overlapping plate 42. Therefore, when the guide 40 is installed on the nursing device, the smaller distance from the bottom of the arc-shaped notch 45 to the lower edge of the overlapping plate 42 reduces airflow obstruction. Thus, most of the airflow flowing in the opposite direction (D) of the guide 40 through the depth direction of the guide 40 to the guide end plate 41 and the overlapping plate 42 can flow through the arc-shaped notch 45, across the overlapping plate 42, and into the guide space. It is then fully guided and turned to a predetermined angle by the guide end plate 41. Because the airflow at the overlapping plate 42 is smoother and less turbulent, the stability of the airflow is improved, thereby reducing noise caused by airflow instability and providing a relatively quiet experience during use.

[0075] In a further embodiment of this utility model, reference is made to Figures 9 to 11The height of the overlap plate 42 is configured to be much smaller than the height of the guide plate 41. In some embodiments, the height of the overlap plate 42 is less than 20% of the height of the guide plate 41, optionally less than 16%, and preferably less than 14%. In one example, reference... Figure 10 The height h2 of the overlapping plate 42 is less than 13% of the height h3 of the guide plate 41. In this embodiment, the overlapping plate 42 is essentially formed as an overlapping section that does not obstruct airflow. Due to the low height of the overlapping plate 42, the obstruction of airflow by the overlapping plate 42 is minimized. Most of the airflow can flow through the arc-shaped notch 45 through the overlapping plate 42, and then smoothly enter the guide space and be guided to a predetermined angle by the guide plate 41. This height design of the overlapping plate 42 can effectively improve the overall airflow efficiency, so that the guide member 40 can maintain ideal performance under various working conditions. Thus, the obstruction of the overlapping plate 42 to the airflow that flows in the opposite direction of the depth direction D of the guide member 40 to the guide plate 41 and the overlapping plate 42 is minimized, so that most of the airflow flows through the arc-shaped notch 45 through the overlapping plate 42 and is guided to a predetermined angle by the guide plate 41, thereby further reducing the noise level. Meanwhile, despite its low height, the overlap plate 42 still possesses sufficient structural strength to effectively support the cables passing through the air guide 40, preventing excessive stress or tangling. This design ensures airflow performance while also providing cable support, guaranteeing the reliability and durability of the equipment.

[0076] In some embodiments of this utility model, reference is made to Figure 4 , Figure 8 as well as Figure 12 The flow guide plate 43 is constructed as an arc-shaped flow guide plate and has an arc-shaped convex surface facing away from the flow guide space. Thus, when the flow guide 40 is installed to the nursing device, the flow guide plate 43 can match the arc-shaped inner wall of the nursing device, which will be described in detail below.

[0077] In some embodiments of this utility model, the flow guide 40 further includes at least one flow guide baffle 44, which intersects with the overlapping plate 42 to form a predetermined angle, dividing the flow guide space into multiple parallel flow guide channels. This ensures that the incoming airflow is evenly distributed to each flow guide channel, avoiding local airflow accumulation or flow deviation, and ensuring a more balanced outlet airflow velocity field. In this embodiment, the flow guide baffle 44 can evenly guide the airflow into the flow guide channel. The guiding effect of the baffle can reduce disordered eddies in the airflow within the channel, reduce turbulence intensity, and make the flow more stable, thereby reducing noise and energy loss caused by airflow pulsation. In some embodiments, reference... Figure 4 , Figure 8 , Figure 12The flow guide baffle 44 is optionally perpendicular to the overlap plate 42. Therefore, the flow guide baffle 44 can further precisely guide the airflow into the flow guide channel, obtaining a more stable outflow. In some embodiments, when the flow guide 40 is installed on a nursing device, the separated channels provide independent space for the cables. The clear channel division makes the cable arrangement more orderly, facilitating later inspection, repair, or replacement, and reducing maintenance costs. Cables inside the nursing device can optionally pass through multiple flow guide channels to avoid tangling between cables. In some embodiments, refer to... Figure 1 , Figure 5 and Figure 9 The flow guide 40 may include two flow guide baffles 44, which divide the flow guide space into three parallel flow guide channels.

[0078] In some embodiments of this utility model, the flow guide baffle 44 may further divide the overlapping plate 42 into multiple segments corresponding to the multiple flow guide channels, and at least a portion of the multiple segments may be provided with the aforementioned arc-shaped notch 45. In some embodiments, refer to Figure 1 and Figure 4 The flow guide baffle 44 further divides the overlapping plate 42 into three sections corresponding to the three flow guide channels, with two sections having arc-shaped notches 45. In other embodiments, refer to Figure 5 and Figure 9 The flow guide baffle 44 divides the overlapping plate 42 into three sections, each with an arc-shaped notch 45.

[0079] In some embodiments of this utility model, reference is made to Figures 5 to 12 An arc-shaped segment 46 may also be formed between adjacent guide side plates 43 and overlapping plates 42. In some embodiments, reference... Figures 5 to 12 The radius of curvature of the middle arc segment 46 is greater than that of the arc segments 46 on both sides. In this embodiment, the arc segment 46 helps optimize the flow characteristics when airflow enters the guide channel, reducing pressure loss and turbulence at the inlet to lower noise levels. In some embodiments, the arc segment 46 can be manufactured as a separate component and assembled with the overlapping plate 42 and the guide side plate 43 by appropriate connection methods such as bonding or snap-fit. In other embodiments, the arc segment 46 can also be integrally formed with the overlapping plate 42 or the guide side plate 43 to form an integral structure with a continuous curved surface transition, reducing the number of parts and improving structural stability. The selection of the above different structural forms can be determined according to specific product design requirements, and this utility model does not impose any limitations on this.

[0080] In some embodiments of this utility model, the height of the flow guide side plate 43 and / or flow guide baffle 44 can be gradually reduced from the flow guide end plate 41 to the overlapping plate 42, so that its upper edge is constructed as a streamlined shape, for example, to further improve the aerodynamic characteristics of the flow guide side plate 43 and / or flow guide baffle 44, reduce the edge turbulence when the airflow passes over the flow guide side plate 43 and / or flow guide baffle 44, and reduce noise.

[0081] In some embodiments of this invention, the flow guide 40 may be disposed in the hinge assembly 30 of the care appliance 100, which will be described in detail below. In some embodiments, reference is made to... Figures 1 to 12 The outer side of the flow guide plate 43 may have a snap-fit ​​portion 47, and the snap-fit ​​portion 47 is lower than the lower edge of the overlapping plate 42. Thus, the flow guide 40 can be detachably installed into the care appliance 100 by means of the snap-fit ​​portion 47, for example, snapping onto the hinge assembly 30 of the care appliance 100. In this embodiment, reference... Figure 3 , Figure 7 And to Figure 11 The snap-fit ​​portion 47 is located on the side opposite to the flow space and below the second plane of the overlapping plate 42. In other words, the snap-fit ​​portion 47 is constructed to completely avoid intruding into the flow space. Thus, when the flow-guiding side plate 43 of the flow guide 40 is disposed inside the nursing device 100, its arcuate profile can be as close as possible to the inner wall of the nursing device 100 or the hinge assembly 30 to expand the size of the flow space and fluid channel, which will be further described below.

[0082] In some embodiments of this utility model, reference is made to Figures 13 to 17 The invention also provides a nursing device 100, which may include a flow guide 40 according to any of the above embodiments of the present invention, which can provide strong and uniform airflow in various working states, especially in a bent state.

[0083] In some embodiments of this utility model, reference is made to Figures 15 to 20 The nursing device 100 may further include a handle 10, a blower 20, a hinge assembly 30, and a fan assembly 50. In this embodiment, the handle 10 is adapted for a user to hold and can accommodate the fan assembly 50, which is used to generate airflow, and the blower 20 is used to output airflow. In this embodiment, a flow guide 40 may be disposed between the handle 10 and the blower 20 of the nursing device 100 to guide fluid from the handle 10 into the blower 20. In some embodiments, the flow guide 40 may be disposed in the hinge assembly 30 between the handle 10 and the blower 20, which will be further described below.

[0084] In some embodiments of this utility model, in conjunction with reference to the reference Figures 15 to 20A first fluid channel 11 may be formed within the handle 10, and a second fluid channel 21 may be formed within the air duct 20. A hinge assembly 30 is disposed between the handle 10 and the air duct 20 to connect the handle 10 and the air duct 20. Thus, the first fluid channel 11 formed within the handle 10 and the second fluid channel 21 formed within the air duct 20 are connected, allowing airflow from the first fluid channel 11 to flow into the second fluid channel 21. In some embodiments, the cross-sections of the handle 10 and the air duct 20 along the airflow direction may optionally be circular or elliptical; this invention does not impose any limitation on this.

[0085] In some embodiments, the first fluid channel 11 may be connected to the outside via the air inlet 12 of the handle 10, thereby facilitating the entry of external fluids, such as airflow, into the first fluid channel 11 and into the second fluid channel 21 via the hinge assembly 30. The second fluid channel 21 may be connected to the outside via the air outlet 22 of the duct 20, thereby facilitating the flow of fluids within the second fluid channel 21, such as heated airflow, to the outside.

[0086] In some embodiments, a circuit board may be disposed in the first fluid channel 11, and a functional device may be disposed in the second fluid channel 21. The circuit board may be electrically connected to the fan assembly 50, thereby controlling the fan assembly 50 to introduce outside air from the air inlet 12. Similarly, the circuit board may be electrically connected to the functional device, thereby controlling the functional device to perform operations such as heating on the airflow in the second fluid channel 21. In some embodiments, the electrical connection is achieved, for example, through multiple cables, which are overlapped on the overlap plate 42 and pass through the aforementioned multiple guide channels respectively, thereby preventing cable tangling and enhancing their torsional resistance. However, it is understood that in alternative embodiments, the multiple cables may also partially bypass the guide channels, which falls within the protection scope of this utility model.

[0087] In some embodiments, reference Figure 15 and Figure 16 The circuit board may be located upstream of the fan assembly 50 along the fluid flow direction. In other embodiments, the circuit board may also be located downstream of the fan assembly 50 along the fluid flow direction, and this invention is not limited thereto.

[0088] In some embodiments of this invention, the first fluid channel 11 may be integrally formed by the handle 10; similarly, the second fluid channel 21 may be integrally formed by the air duct 20. In optional embodiments, the first fluid channel 11 and / or the second fluid channel 21 may be partially formed by the hinge assembly 30, and this invention does not limit this.

[0089] In some embodiments of this utility model, reference is made to Figure 13 and Figure 14The nursing device 100 may optionally be a bendable nursing device, and the hinge assembly 30 between the handle 10 and the air blower 20 is further configured to switch between a straight state and a bent state relative to the handle 10, the switching process being achieved, for example, by means of the hinge assembly 30. In this embodiment, the hinge assembly 30 is configured as a mechanical rotational structure connecting the handle 10 and the air blower 20 for realizing the state switching function of the air blower 20 relative to the handle 10. In this embodiment, the hinge assembly 30 defines a predetermined axis of rotation, so that the air blower 20 of the nursing device 100 can be controlled to switch angles between a straight state and a bent state around the axis of rotation by means of the hinge assembly 30.

[0090] In some embodiments of this invention, the air guide 40 can be connected to the air duct 20 or the hinge assembly 30 and switch between a straight air guide state and a bent air guide state as the bending angle of the air duct 20 relative to the handle 10 changes. Thus, this linkage between the air guide 40 and the air duct 20 or the hinge assembly 30 ensures that the overall airflow remains smoothly guided. Regardless of how the air duct angle rotates, the air guide automatically adjusts its direction to adapt to the airflow path, maintaining smooth airflow guidance without significantly affecting airflow performance and ensuring the adaptability of the entire device. Here, the straight air guide state corresponds, for example, to the straight state of the nursing device 100, and the bent air guide state corresponds, for example, to the bent state of the nursing device 100.

[0091] In some embodiments, when the air duct 20 is in a straight position relative to the handle 10, the length extension direction of the air duct 20 is parallel or substantially parallel to the length extension direction of the handle 10. In one example, refer to Figures 1 to 5 When the hair dryer 20 is in a straight position relative to the handle 10, the central axis 23 of the hair dryer is approximately parallel to the central axis 13 of the handle. Thus, in this embodiment, the overall axial length of the care device 100 in the straight position is maximized and the radial dimension is minimized, which facilitates storage and the installation and use of the care device 100 with styling accessories, such as curling irons, straightening combs, etc.

[0092] In some embodiments of this utility model, when the air duct 20 is in a bent state relative to the handle 10, the length extension direction of the air duct 20 and the length extension direction of the handle 10 form a predetermined angle / angle. In some embodiments, reference Figures 9 to 11 When the air duct 20 is bent relative to the handle 10, the central axis 25 of the air duct forms a predetermined angle with the central axis 13 of the handle 10. In some embodiments, the predetermined angle is, for example, in the range of 75° to 105°, and optionally in the range of 85° to 95°. In one specific embodiment, refer to... Figure 14 and Figure 16The predetermined angle is 86°. Thus, the care device resembles a traditional hair dryer in its folded state. At this time, the user can hold the care device 100 and use it with styling accessories, such as styling nozzles, quick-drying nozzles, etc.

[0093] In some embodiments of this utility model, when the nursing device 100 is in a bent state, reference Figure 16 , Figure 18 and Figure 20 The overlapping plate 42 is located near the inner corner region 32 formed by the air duct 20 and the handle 10, while the guide plate 41 is located near the outer corner region 33 formed by the air duct 20 and the handle 10. This creates a larger airflow turning radius at the guide plate 41 compared to the overlapping plate 42. Airflow from the first fluid channel 11 can be guided by the guide plate 41 along the curved flow channel L1 with a large turning radius to the second fluid channel 21. In this embodiment, because the main airflow experiences less flow loss and has a lower local pressure gradient through the path of the large-radius turn, the kinetic energy loss of the airflow can be reduced to ensure wind speed and air volume. This structural design, combined with the linkage between the fan assembly and the air outlet structure, improves the overall aerodynamic efficiency of the machine. This efficient structural design allows the nursing device to achieve high wind speed and high air volume output even when bent. Furthermore, the curved flow channel L1 with a large turning radius helps reduce turbulence intensity and lower the noise level generated by airflow turning, balancing high air volume and low noise, significantly improving the user experience and enhancing the overall performance of the nursing device.

[0094] In some embodiments of this utility model, reference is made to Figure 15 as well as Figure 16 This shows the combination based on the above. Figures 1 to 4 The nursing device 100 of the guide element 40 shown.

[0095] In this embodiment, reference Figure 15 as well as Figure 16 When the nursing device 100 is in a straight cylindrical state, the extension line of the handle center axis 13 of the handle 10 extends through the guide space of the guide member 40 and does not intersect with the guide end plate 41 of the guide member 40. In this embodiment, in the straight cylindrical state of the nursing device, the airflow from the first fluid channel 11 can flow into the guide space of the guide member and flow to the second fluid channel 21. During this process, the guide end plate 41 mainly plays the role of guiding the airflow without significantly disturbing the airflow, so that the airflow from the first fluid channel 11 flows into the second fluid channel 21 while maintaining the general direction, thus maintaining the original kinetic energy and direction of the airflow. Therefore, the nursing device 100 according to this embodiment of the present invention maintains strong wind force and considerable air volume in the straight cylindrical state. In a specific embodiment, the airflow velocity of the nursing device 100 blown out by the blower 20 in the straight cylindrical state is greater than 52 m / s, and the air volume is greater than 51 m³ / s. 3The noise level is controlled at around 78 dB(A), which has a significant performance advantage over existing multi-angle care devices.

[0096] In some embodiments, reference Figure 15 as well as Figure 16 When the nursing device 100 is in a bent state, the extension line of the handle central axis 13 of the handle 10 intersects with the guide plate 41 of the guide member 40, and the extension line of the handle central axis 13 is located below the bottom of the arc-shaped notch 45 of the overlap plate 42. Therefore, the airflow from the first fluid channel to the overlap plate 42 can partially flow from the arc-shaped notch 45 to the guide plate 41, increasing the airflow into the guide space and increasing the wind speed and air volume of the nursing device 100 in the bent state. In a specific example, the airflow velocity of the nursing device 100 blown out by the air duct 20 in the bent state is greater than 50 m / s, and the air volume is greater than 47 m³ / s. 3 / s, and the noise level is controlled at around 80dB(A), achieving performance comparable to that of the nursing device 100 in its straight state.

[0097] In other embodiments of this utility model, reference is made to Figure 17 and Figure 18 This shows the combination based on the above. Figures 5 to 8 The nursing device 100 of the guide element 40 shown.

[0098] In this embodiment, reference Figure 17 as well as Figure 18 When the nursing device 100 is in a straight cylindrical state, the extension line of the handle center axis 13 of the handle 10 extends through the flow guiding space of the flow guide 40 and does not intersect with the flow guiding end plate 41 of the flow guide 40. In this embodiment, compared to Figure 15 as well as Figure 16 The nursing equipment shown is 100. Figure 17 as well as Figure 18 The height of the arc-shaped notch 45 of the installed flow guide 40 is greater than the distance from the bottom of the arc-shaped notch 45 to the lower edge of the overlap plate 42. Therefore, the smaller distance from the bottom of the arc-shaped notch 45 to the lower edge of the overlap plate 42 reduces the obstruction of the overlap plate 42 to the airflow, resulting in less resistance to the airflow from the first fluid channel 11. In this embodiment, by means of... Figures 5 to 8 The guide 40 shown is compared to the nursing device 100 according to this embodiment. Figure 15 and Figure 16 The nursing appliance 100 shown achieves significantly improved airflow speed, lower noise, and comparable air volume. In one specific example, the airflow speed from the duct 20 of the nursing appliance 100 in a bent state is greater than 55 m / s, compared to... Figure 15 and Figure 16 The nursing device shown has an increased speed of 4 m / s and an air volume greater than 50.2 m³ / s.3 The wind speed is controlled at approximately 78 dB(A), and the noise level is also controlled at around 78 dB(A), achieving significantly enhanced wind speed and overall performance.

[0099] In some embodiments, reference Figure 17 as well as Figure 18 When the nursing device 100 is in a bent state, the extension line of the handle center axis 13 of the handle 10 intersects the guide end plate 41 of the guide member 40, and the handle center axis 13 does not intersect the overlapping plate 42. In other words, the projections of the guide end plate 41 and the overlapping plate 42 along the length extension direction of the handle 10 do not coincide. Therefore, most of the airflow from the first fluid channel to the overlapping plate 42 can flow through the arc-shaped notch 45, pass through the overlapping plate 42, and enter the guide space, and is fully guided by the guide end plate 41, being guided to the air duct 20 with a large turning radius L1. This significantly increases the airflow flowing into the guide space, increasing the wind speed and air volume of the nursing device 100 in the bent state. In a specific example, the wind speed of the airflow blown out by the air duct 20 from the nursing device 100 in the bent state is greater than 58.8 m / s, which is greater than the wind speed in the straight state (55 m / s), and the air volume is greater than 48.6 m³ / s. 3 / s, and the noise level is controlled at 79.6dB(A), achieving performance comparable to that of the nursing device 100 in its straight-tube configuration, and even providing a higher airflow rate. Meanwhile, in this embodiment, by means of Figures 5 to 8 The guide 40 shown is compared to the nursing device 100 according to this embodiment. Figure 15 and Figure 16 The nursing device 100 shown has an increased air velocity of 8.2 m / s, which, while increasing air volume, also reduces noise levels, achieving superior performance.

[0100] In other embodiments of this utility model, reference is made to Figure 19 and Figure 20 This shows the combination based on the above. Figures 9 to 12 The nursing device 100 of the guide element 40 shown.

[0101] In this embodiment, reference Figure 19 as well as Figure 20 When the nursing device 100 is in a straight cylindrical state, the extension line of the handle center axis 13 of the handle 10 extends through the flow guiding space of the flow guide 40 and does not intersect with the flow guiding end plate 41 of the flow guide 40. In this embodiment, compared to Figure 17 as well as Figure 18 The nursing equipment shown is 100. Figure 19 as well as Figure 20The height of the overlapping plate 42 of the installed flow guide 40 is less than 20% of the height of the flow guide end plate 41. Therefore, the minimally small gap between the bottom of the arc-shaped notch 45 and the lower edge of the overlapping plate 42 further reduces the obstruction of the overlapping plate 42 to the airflow, resulting in minimal resistance to the airflow from the first fluid channel 11. In this embodiment, by means of… Figures 9 to 12 The guide 40 shown is compared to the nursing device 100 according to this embodiment. Figure 17 and Figure 18 The nursing appliance 100 shown achieves higher air velocity, greater air volume, and lower noise levels. In one specific example, the air velocity of the airflow from the duct 20 of the nursing appliance 100 in a bent state is greater than 56.7 m / s, compared to... Figure 17 and Figure 18 The shown nursing device 100 increased by 1.7 m / s, with an airflow greater than 51.6 m³ / s. 3 / s, and the noise level is also controlled at around 77.9bB(A), achieving a comprehensive improvement in wind speed, air volume and noise level.

[0102] In some embodiments, reference Figure 19 as well as Figure 20 When the nursing device 100 is in a bent state, the extension line of the handle center axis 13 of the handle 10 intersects the guide end plate 41 of the guide member 40, and the handle center axis 13 does not intersect the overlapping plate 42. In other words, the projections of the guide end plate 41 and the overlapping plate 42 along the length extension direction of the handle 10 do not coincide. Furthermore, the height of the overlapping plate 42 in the direction of the air duct center axis 23 of the air duct 20 is less than at least 30%, preferably 20%, of the height of the guide end plate 41 in the direction of the air duct center axis 23 of the air duct 20. As a result, almost all the airflow flowing from the first fluid channel 11 to the overlapping plate 42 can flow through the arc-shaped notch 45 through the overlapping plate 42 into the guide space, and be fully guided by the guide end plate 41, and guided to the air duct 20 with a large turning radius L1. This significantly increases the airflow flowing into the guide space, and increases the wind speed and air volume of the nursing device 100 in the bent state.

[0103] In this embodiment, reference Figure 21The diagram shows a cross-sectional view of the handle 10 along the handle central axis 13 when the nursing device 100 is in a bent state. As previously described, in the bent state of the nursing device 100, the projections of the guide plate 41 and the overlapping plate 42 along the length extension direction of the handle 10 do not coincide. Therefore, the guide member 40 has an airflow hole along the handle central axis 13, through which a portion of the airflow from the first fluid channel 11 can flow into the air duct 20, thereby further increasing the airflow area of ​​the first fluid channel 11 connected to the air duct 20. In some embodiments, along the handle central axis 13 of the handle 10, the ratio of the projected area S1 of the airflow channel to the projected area of ​​the through hole 31 of the hinge assembly 30 is greater than 0.15.

[0104] In this embodiment, the airflow velocity of the nursing device 100 blown out by the air duct 20 in the bent state is greater than 58.7 m / s, which is greater than the airflow velocity in the straight state (56.7 m / s), and the air volume is greater than 51.6 m³ / s. 3 / s, and the noise level is controlled at 79dB(A), achieving performance comparable to that of the nursing device 100 in its straight-tube configuration, and even providing a higher airflow rate. Meanwhile, in this embodiment, by means of Figures 9 to 12 The guide 40 shown is compared to the nursing device 100 according to this embodiment. Figure 17 and Figure 18 The nursing device 100 shown increases the airflow by 3 m³ under the same wind speed. 3 While reducing noise levels, it also achieves superior performance.

[0105] In some embodiments of this invention, the flow guide 40 is configured such that the flow guide baffle 44 is parallel to the plane formed by the handle center axis 13 of the handle 10 and the air duct center axis 23 of the air duct 20, especially when the nursing device 100 is bent. Specifically, when the nursing device 100 is bent, the handle 10 and the air duct 20 form a "7" shape, thereby the handle center axis 13 and the air duct center axis 23 jointly define the overall plane of the nursing device 100, and the flow guide baffle 44 is configured to be substantially parallel to this plane. Thus, the plane of the flow guide baffle 44 is parallel to the direction of the airflow flowing out of the first fluid channel 11, so that the airflow on the surface of the flow guide baffle 44 can flow evenly and does not substantially obstruct the airflow, thereby ensuring the wind speed and air volume of the nursing device in the straight state.

[0106] In some embodiments of this utility model, reference is made to Figures 15 to 20 The hinge assembly 30 forms a through hole 31 at the connection between the handle 10 and the air duct 20 (in Figures 15 to 20(Exemplary example shown in dashed boxes) Thus, the first fluid channel 11 and the second fluid channel 21 are connected via the through-hole 31. In some embodiments, the cross-section of the through-hole 31 of the hinge assembly 30 along the airflow direction is configured as circular or elliptical, and the internal space is defined by the circular / elliptical inner wall of the through-hole 31, for example, a cylindrical internal space with a certain height. In this embodiment, the flow guide 40 may be partially, preferably integrally disposed in the cylindrical internal space of the through-hole 31. This design, in which the flow guide 34 is enclosed in the internal space, not only avoids damage from external contact but also does not increase the overall volume of the product, which is beneficial for the miniaturization design of the product.

[0107] In some embodiments of this utility model, reference is made to Figures 15 to 20 Except for the snap-fit ​​part 47, the flow guide 40 is located in the through hole 31, and the arc-shaped structure of the flow guide side plate 43 matches the inner wall shape of the through hole 31, thereby maximizing the flow guide space defined by the flow guide 40 and the area of ​​multiple flow guide channels.

[0108] In some embodiments of this utility model, as described above, the snap-fit ​​portion 47 of the guide member 40 extends in a direction away from the guide space and forms a snap-fit ​​parallel to the second plane. In this embodiment, the inner wall of the air duct 20 may be provided with a mating protrusion suitable for engaging with the snap-fit, thereby fixing the guide member 40 to the air duct 20 by means of snap-fit ​​with the mating protrusion. In this embodiment, the guide member 40 is thus connected to the air duct and switches between a straight guide state and a bent guide state as the bending angle of the air duct 20 relative to the handle 10 changes. In this embodiment, the straight guide state corresponds, for example, to the straight state of the aforementioned nursing device, and the bent guide state corresponds, for example, to the bent state of the aforementioned nursing device.

[0109] This document describes several embodiments of the present invention. However, for the sake of brevity, the descriptions of the embodiments are not exhaustive, and identical or similar features or parts between the embodiments may be omitted. In this document, "one embodiment," "some embodiments," "example," "specific example," or "some examples" refer to at least one embodiment or example applicable to the present invention, but not all embodiments. The above terms do not necessarily mean referring to the same embodiment or example. Without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples.

[0110] In this document, it should be understood that, unless otherwise expressly defined, the directional terms such as “center,” “axial,” “radial,” “circumferential,” “longitudinal,” “lateral,” “length,” “width,” and “thickness,” as well as spatial position terms such as “up,” “down,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” and movement direction terms such as “clockwise” and “counterclockwise”, are all relative orientations or positional descriptions defined based on the specific posture and orientation of the device shown in the accompanying drawings, and do not imply or limit that the device or element must have a certain orientation or be constructed or operated in a certain posture. Therefore, they should not be construed as limitations on this utility model.

[0111] The exemplary systems and methods of this invention have been specifically shown and described with reference to the foregoing embodiments, and are merely examples of the best mode for implementing the systems and methods. Those skilled in the art will understand that various changes can be made to the embodiments described herein without departing from the spirit and scope of this invention as defined in the appended claims when implementing the systems and / or methods.

Claims

1. A flow guide for a treatment appliance, characterized in that include: Guide end plate; An overlap plate, wherein the overlap plate is spaced apart from the flow guide plate; The flow guide side plate is connected between the corresponding ends of the flow guide end plate and the overlapping plate, and the flow guide end plate, the overlapping plate and the flow guide side plate define a flow guide space; Wherein, the projected area of ​​the overlapping plate in the depth direction of the guide member is smaller than the projected area of ​​the guide end plate in the depth direction of the guide member.

2. The flow guide of claim 1, wherein, At least one arc-shaped notch is formed at the top of the overlapping plate.

3. The flow guide of claim 2, wherein, The height of the arc-shaped notch is greater than the distance from the bottom of the arc-shaped notch to the lower edge of the overlapping plate.

4. The flow guide of claim 1, wherein, The height of the overlap plate is less than 20% of the height of the guide plate.

5. The flow guide of claim 1, wherein, The flow guide further includes at least one flow guide baffle, which intersects with the overlapping plate to form a predetermined angle and divides the flow guide space into multiple parallel flow guide channels.

6. The flow guide of claim 5, wherein, The flow guide plate is perpendicular to the overlap plate.

7. The flow guide of any one of claims 1 to 5, wherein, The flow guide is disposed in the hinge assembly of the nursing device.

8. The flow guide of any one of claims 1 to 5, wherein, The flow guide end plate has an arc-shaped concave surface facing the flow guide space, and the overlapping plate has an arc-shaped convex surface facing the flow guide space; and the width extension direction of the overlapping plate is approximately parallel to the width extension direction of the flow guide end plate.

9. The flow guide of any one of claims 1 to 5, wherein, The outer side of the flow guide plate has a snap-fit ​​portion, and the snap-fit ​​portion is lower than the lower edge of the overlap plate.

10. A care appliance, characterized in that Includes the flow guide according to any one of claims 1 to 9.

11. The care appliance of claim 10, wherein, The nursing device is a bendable nursing device, and the nursing device further includes: A handle, wherein a first fluid channel is formed within the handle; A ventilation duct, wherein a second fluid channel is formed inside the ventilation duct, and the first fluid channel is connected to the second fluid channel; A hinge assembly connects the handle and the air blower to allow the air blower to switch between a straight and bent state of the nursing device relative to the handle, wherein, in the straight state of the nursing device, the air blower and the handle extend in parallel directions, and in the bent state of the nursing device, the air blower and the handle extend at a predetermined angle. A fan assembly, wherein the fan assembly is disposed within the first fluid channel; The flow guide is disposed between the handle of the nursing device and the air duct, and is used to guide fluid from the handle into the air duct.

12. The care appliance of claim 11, wherein, When the nursing device is bent, the overlapping plate is close to the inner corner area formed by the air duct and the handle, and the guide plate is close to the outer corner area formed by the air duct and the handle.

13. A care appliance according to claim 11 or 12, characterised in that, In the straight state of the nursing device, the extension line of the central axis of the handle extends through the flow guiding space and does not intersect with the flow guiding end plate or the overlapping plate; in the bent state of the nursing device, the extension line of the central axis of the handle intersects with the flow guiding end plate but does not intersect with the overlapping plate.

14. A care appliance according to claim 11 or 12, characterised in that, When the nursing device is bent, the projections of the flow guide plate and the overlapping plate along the length extension direction of the handle do not overlap at least partially.

15. The nursing appliance according to claim 11 or 12, characterized in that, The air guide is connected to the air duct or the hinge assembly and switches between a straight air guide state and a bent air guide state as the bending angle of the air duct relative to the handle changes.

16. The care appliance of claim 11 or 12, wherein, The flow guide end plate of the flow guide has an arc-shaped concave surface facing the flow guide space, and the overlapping plate has an arc-shaped convex surface facing the flow guide space; and the width extension direction of the overlapping plate is approximately parallel to the width extension direction of the flow guide end plate, wherein the flow guide baffle of the flow guide is parallel to the plane jointly determined by the central axis of the handle and the central axis of the air duct.

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