Nursing appliance

Abstract

The utility model discloses a nursing appliance, nursing appliance includes: the air cylinder, the air cylinder is provided with the air duct wall in, the air duct wall with the inner wall of air cylinder is radially interval arrangement, the first air flue is formed with in the air duct wall, the first air flue front and back direction's both ends are provided with the first air inlet and first air outlet of intercommunication, the inner wall of at least part air cylinder with the air duct wall between defines the second air flue, be provided with heating module in the second air flue, the front end of second air flue is provided with second air outlet, the air duct wall forms the second air inlet between the first air inlet and first air outlet, through the second air inlet, the first air inlet can approach heating module. Therefore, more wind can flow out from second air outlet after the heating of heating module, and the influence of cold wind flowing out from first air outlet on the constant temperature control of the nursing appliance can be reduced.

Description

Technical Field

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

[0002] Hair dryers, as a common personal care tool, are used for a variety of purposes, such as drying substances (like paint and hair) and cleaning or peeling surface layers. Hair dryers are equipped with a fan and an air duct; the fan draws outside air into the duct and then outputs a high-speed airflow to meet different user needs.

[0003] In existing technologies, the temperature control of the air blown by hair dryers to users is poor. When the hair dryer is in different modes, or at different room temperatures, or when the shape and length of the nozzle at the air outlet of the hair dryer are different, the temperature of the air blown by the care device perceived by the user varies greatly, and the hair dryer cannot be effectively adjusted and controlled. This will affect the care effect of the hair dryer and reduce the user experience. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a nursing device with better temperature control of the air outlet.

[0005] A nursing device according to a first aspect of the present invention includes: a blower, wherein a duct wall is provided inside the blower, the duct wall and the inner wall of the blower are radially spaced apart, a first air duct is formed inside the duct wall, a first air inlet and a first air outlet are provided at both ends of the first air duct in the front-rear direction, a second air duct is defined between at least a portion of the inner wall of the blower and the duct wall, and a second air outlet is provided at the front end of the second air duct; a second air inlet is formed between the first air inlet and the first air outlet in the duct wall, and the first air duct is connected to the second air duct through the second air inlet.

[0006] Therefore, by forming a third air inlet between the first air inlet and the first air outlet on the duct wall, and connecting the first duct to the second duct through the third air inlet, the air pressure between the first duct and the second duct can be made more uniform and balanced. This not only improves the air outlet stability of the first duct and the second duct, but also prevents the duct wall from being squeezed, which could lead to structural instability.

[0007] A nursing device according to a second aspect of the present invention includes: a blower, wherein a duct wall is provided inside the blower, the duct wall and the inner wall of the blower are radially spaced apart, a first air duct is formed inside the duct wall, a first air inlet and a first air outlet are provided at both ends of the first air duct in the front-rear direction, a second air duct is defined between at least a portion of the inner wall of the blower and the duct wall, and a second air outlet is provided at the front end of the second air duct; a second air inlet is formed between the first air inlet and the first air outlet in the duct wall, and at least a portion of the air entering the nursing device from the first air inlet flows into the second air duct before reaching the first air outlet.

[0008] Therefore, the air entering the nursing device through the first air inlet enters at least partially into the second air duct before flowing out of the first air outlet, and is further processed in the second air duct according to the needs of the nursing device before flowing out of the second air outlet. This can improve the performance of the nursing device while ensuring normal airflow from the first air duct.

[0009] A nursing device according to a third aspect embodiment of the present invention includes: a blower, wherein a duct wall is provided inside the blower, the duct wall and the inner wall of the blower are radially spaced apart, a first air duct is formed inside the duct wall, a first air inlet and a first air outlet are provided at both ends of the first air duct in the front-rear direction, a second air duct is defined between at least a portion of the inner wall of the blower and the duct wall, a heating module is provided in the second air duct, and a second air outlet is provided at the front end of the second air duct; a second air inlet is formed between the first air inlet and the first air outlet in the duct wall, and the first air inlet can approach the heating module through the second air inlet.

[0010] Therefore, by setting a second air inlet between the two ends of the air duct wall in the front and rear directions, a part of the air in the first air duct will flow directly to the first air outlet through the first air inlet, and another part of the air in the first air duct will flow to the second air inlet through the first air inlet, and then flow into the second air duct through the second air inlet to be heated by the heating module. After being heated by the heating module, the air in the second air duct flows out from the second air outlet and mixes with the air flowing from the first air outlet. The setting of the third air inlet allows more air to flow out from the second air outlet after being heated by the heating module, reducing the impact of the cold air flowing out from the first air outlet on the constant temperature control of the air outlet of the nursing device.

[0011] In some examples of this utility model, the duct wall is annular.

[0012] In some examples of this utility model, the second air inlet is formed by a notch in the duct wall, and / or the second air inlet is annular.

[0013] In some examples of this utility model, the duct wall includes a first wall and a second wall, the second wall being located in front of the first wall, and the second wall being at least partially radially recessed relative to the first wall to form a step portion between the second wall and the first wall, the step portion forming the second air inlet.

[0014] In some examples of this utility model, the second wall is concentrically arranged with the first wall, and the diameter of the second wall is smaller than the diameter of the first wall, so that a step portion is formed between the second wall and the first wall, and the step portion forms the second air inlet.

[0015] In some examples of this utility model, the third air inlet is provided with a protective component.

[0016] In some examples of this utility model, the third air inlet is provided with a damper, which selectively opens and closes the third air inlet.

[0017] In some examples of this utility model, the third air inlet is provided with a first air guide.

[0018] In some examples of this utility model, the nursing device further includes a handle connected to the lower side of the air duct. A third air duct is provided inside the handle, and a first fan is provided inside the third air duct. A third air inlet and a third air outlet are respectively provided at both ends of the third air duct in the vertical direction. The third air outlet is connected to the second air duct. A heating module is provided in the second air duct, and the heating module is located at the front of the third air duct.

[0019] In some examples of this utility model, the heating module is disposed in front of the second air inlet.

[0020] In some examples of this utility model, there are multiple heating modules, which are discretely arranged circumferentially and / or axially in the second air duct.

[0021] In some examples of this utility model, a second air guide is provided between the third air outlet and the second air duct.

[0022] In some examples of this invention, the first air outlet and the second air outlet release airflow independently from the front end of the nursing device.

[0023] 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

[0024] 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:

[0025] Figure 1 This is a schematic diagram of a nursing device according to an embodiment of the present utility model;

[0026] Figure 2 This is a cross-sectional view of a nursing device according to the first embodiment of the present utility model;

[0027] Figure 3 This is a cross-sectional view of a nursing device according to the first embodiment of the present utility model;

[0028] Figure 4 This is a cross-sectional view of a nursing device according to the first embodiment of the present utility model;

[0029] Figure 5 This is a cross-sectional view of a nursing device according to the first embodiment of the present utility model;

[0030] Figure 6 This is a cross-sectional view of a nursing device according to the first embodiment of the present utility model;

[0031] Figure 7 This is a cross-sectional view of a nursing device according to the first embodiment of the present utility model;

[0032] Figure 8 This is a cross-sectional view of a nursing device according to a second embodiment of the present utility model;

[0033] Figure 9 This is a cross-sectional view of a nursing device according to a second embodiment of the present utility model;

[0034] Figure 10 This is a cross-sectional view of a nursing device according to a second embodiment of the present utility model;

[0035] Figure 11 This is a schematic diagram of the heating module according to an embodiment of the present utility model.

[0036] Figure label:

[0037] 100. Nursing equipment;

[0038] 10. Air duct; 11. Air duct wall; 111. First air duct; 1111. First air inlet; 1112. First air outlet; 112. First wall; 113. Second wall; 114. Step section; 12. Second air duct; 122. Second air outlet; 13. Heating module; 14. Second air inlet; 141. Air damper; 15. Second fan; 16. Protective component; 17. First air guide component;

[0039] 20. Handle; 21. Third air duct; 211. Third air inlet; 212. Third air outlet; 22. First fan. Detailed Implementation

[0040] 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.

[0041] The following is for reference. Figures 1-11 The nursing appliance 100 according to an embodiment of the present invention can be a hair dryer, hair styling tool or other nursing appliance 100 with an air outlet.

[0042] Combination Figures 1-11 As shown, the nursing device 100 according to the first aspect of the present invention may mainly include: a blower 10, wherein a duct wall 11 is provided inside the blower 10, the duct wall 11 and the inner wall of the blower 10 are radially spaced apart, a first air duct 111 is formed inside the duct wall 11, a first air inlet 1111 and a first air outlet 1112 are provided at both ends of the first air duct 111 in the front-rear direction, a second air duct 12 is defined between at least a portion of the inner wall of the blower 10 and the duct wall 11, a second air outlet 122 is provided at the front end of the second air duct 12, a second air inlet 14 is formed between the first air inlet 1111 and the first air outlet 1112 in the duct wall 11, and the first air duct 111 is connected to the second air duct 12 through the second air inlet 14.

[0043] Specifically, the ventilation duct 10 extends in the front-to-back direction. A first ventilation duct 111 is formed inside the ventilation duct wall 11 by radially spacing the ventilation duct wall 11 and the inner wall of the ventilation duct 10. A second ventilation duct 12 is defined between the ventilation duct wall 11 and the inner wall of the ventilation duct 10. A first air inlet 1111 and a first air outlet 1112 are respectively opened at both ends of the first ventilation duct 111 in the front-to-back direction. A second air outlet 122 is provided at the front end of the second ventilation duct 12. A second air inlet 14 is disposed on the ventilation duct wall 11, located between the first air inlet 1111 and the first air outlet 1112. The first ventilation duct 111 can be connected to the second ventilation duct 12 through the second air inlet 14, meaning the air in the first ventilation duct 111... The air can enter the second air duct 12 through the second air inlet 14, and the air in the second air duct 12 can also enter the first air duct 111 through the second air inlet 14. This makes the air pressure in the first air duct 111 and the second air duct 12 more uniform and balanced. When the air in the first air duct 111 blows out from the first air outlet 1112, and the air in the second air duct 12 blows out from the second air outlet 122, the airflow from the first air outlet 1112 and the second air outlet 122 is smoother and more stable. This can prevent the air pressure in the first air duct 111 from being too low and the air blown out from the second air outlet 122 from flowing back into the first air duct 111, or it can prevent the air pressure in the second air duct 12 from being too low and the air blown out from the first air outlet 1112 from flowing back into the second air duct 12.

[0044] Combination Figures 1-11 As shown, the nursing device 100 according to the second aspect embodiment of the present utility model may mainly include: a blower 10, an air duct wall 11 provided inside the blower 10, the air duct wall 11 and the inner wall of the blower 10 being radially spaced apart, a first air duct 111 formed inside the air duct wall 11, a first air inlet 1111 and a first air outlet 1112 that are interconnected at both ends of the first air duct 111 in the front-rear direction, a second air duct 12 defined between at least a portion of the inner wall of the blower 10 and the air duct wall 11, a second air outlet 122 provided at the front end of the second air duct 12, a second air inlet 14 formed between the first air inlet 1111 and the first air outlet 1112 in the air duct wall 11, and at least a portion of the air entering the nursing device 100 from the first air inlet 1111 flows into the second air duct 12 before reaching the first air outlet 1112.

[0045] Specifically, the ventilation duct 10 extends in the front-to-back direction. A first ventilation duct 111 is formed inside the ventilation duct wall 11 by radially spacing the ventilation duct wall 11 and the inner wall of the ventilation duct 10. A second ventilation duct 12 is defined between the ventilation duct wall 11 and the inner wall of the ventilation duct 10. A first air inlet 1111 and a first air outlet 1112 are respectively opened at both ends of the first ventilation duct 111 in the front-to-back direction. A second air outlet 122 is provided at the front end of the second ventilation duct 12. A second air inlet 14 is disposed on the ventilation duct wall 11, located between the first air inlet 1111 and the first air outlet 1112. Air enters the first ventilation duct 111 from the first air inlet 1111 and flows towards... Before the air in the first air outlet 1112 reaches the first air outlet 1112, at least part of the air in the first air duct 111 flows into the second air duct 12 through the second air inlet 14. With this arrangement, while ensuring that the first air duct 111 can output air normally, some of the air in the first air duct 111 can enter the second air duct 12. Given that there is already air in the second air duct 12, the air volume in the second air duct 12 can be increased. The air in the second air duct 12 can be processed by the relevant components in the second air duct 12 according to the needs of the nursing device 100 before flowing out from the second air outlet 122. This can improve the performance of the nursing device 100.

[0046] Combination Figures 1-11 As shown, the nursing device 100 according to the third aspect embodiment of the present utility model may mainly include: a blower 10, wherein a duct wall 11 is provided inside the blower 10, the duct wall 11 and the inner wall of the blower 10 are radially spaced apart, a first air duct 111 is formed inside the duct wall 11, a first air inlet 1111 and a first air outlet 1112 are provided at both ends of the first air duct 111 in the front-rear direction, a second air duct 12 is defined between at least a portion of the inner wall of the blower 10 and the duct wall 11, a heating module 13 is provided in the second air duct 12, and a second air outlet 122 is provided at the front end of the second air duct 12; a second air inlet 14 is formed between the first air inlet 1111 and the first air outlet 1112, and the first air inlet 1111 can approach the heating module 13 through the second air inlet 14.

[0047] Specifically, by setting a second air inlet 14 between the two ends of the air duct wall 11 in the front and rear directions, a part of the air in the first air duct 111 will flow directly to the first air outlet 1112 through the first air inlet 1111, and another part of the air in the first air duct 111 will flow to the second air inlet 14 through the first air inlet 1111, and then flow to the second air duct 12 through the second air inlet 14 to be heated by the heating module 13. After being heated by the heating module 13, the air in the second air duct 12 flows out from the second air outlet 122 and mixes with the air from the first air outlet 1112 before flowing to the second air outlet 122. The setting of the third air inlet 211 allows more air to flow out from the second air outlet 122 after being heated by the heating module 13, reducing the impact of the cold air flowing out from the first air outlet 1112 on the constant temperature control of the air outlet of the nursing device 100, and also increasing the air volume of the hot air blown out from the second air outlet 122.

[0048] The nursing device 100 in the above three embodiments of the present invention also includes a handle 20. The air blower 10 extends in the front-to-back direction, and the handle 20 extends in the vertical direction. The upper end of the handle 20 is connected to the lower side of the air blower 10. When the user uses the nursing device 100 to care for the part to be cared for, he / she can hold the handle 20 and point the first air outlet 1112 and the second air outlet 122 toward the part to be cared for, so that the air flowing out from the first air outlet 1112 and the second air outlet 122 can blow onto the surface of the part to be cared for.

[0049] Furthermore, a third air duct 21 is provided inside the handle 20, and a first fan 22 is provided inside the third air duct 21. A third air inlet 211 and a third air outlet 212 are respectively provided at both ends of the third air duct 21 in the vertical direction. The third air outlet 212 is connected to the second air duct 12.

[0050] Specifically, a first fan 22 is installed in the third air duct 21 inside the handle 20. The first fan 22 can accelerate the surrounding air, so that the air outside the handle 20 can enter the third air duct 21 through the third air inlet 211. A heating module 13 is installed in the second air duct 12. The air flowing into the second air duct 12 through the third air outlet 212 under the acceleration of the first fan 22 is heated by the heating module 13 and flows out from the second air outlet 122. At this time, the air flowing out from the second air outlet 122 will create a negative pressure at the first air outlet 1112 of the first air duct 111, so that the external air flows from the first air inlet 1111 to the first air outlet 1112 at an accelerated speed, and mixes with the air heated by the heating module 13 at the second air outlet 122 and blown towards the part to be treated. This not only increases the air volume blown towards the part to be treated, but also makes the temperature of the air blown towards the part to be treated uniform, which can improve the treatment effect of the part to be treated.

[0051] Furthermore, instead of using mechanical devices such as fans to accelerate the airflow in the first air duct 111, the airflow from the second air outlet 122 is cleverly utilized to create negative pressure at the first air outlet 1112, thereby accelerating the airflow in the first air duct 111. While achieving the same airflow volume, this not only reduces the cost and weight of the care device 100, making it lighter, but also allows for more structural space inside the air duct 10, increasing the user's usage options. For example, the part to be cared for can be directly placed into the first air duct 111 for care, thus improving the user experience.

[0052] Furthermore, by setting a second air inlet 14 between the two ends of the first air duct 111, that is, the second air inlet 14 is located between the first air inlet 1111 and the first air outlet 1112, after the air is accelerated into the first air duct 111 from the first air inlet 1111, part of it flows directly to the first air outlet 1112, and the other part is diverted to the second air duct 12 through the second air inlet 14. After being heated by the heating module 13 in the second air duct 12, it flows out from the second air outlet 122. Therefore, the design of the second air inlet 14 can increase the air volume heated by the heating module 13 in the second air duct 12, that is, it can increase the air volume exiting from the second air outlet 122. This allows for increased hot air output from the second air outlet 122 without increasing the power and size of the first fan 22. The mixing of the cold air from the first air outlet 1112 and the hot air from the second air outlet 122 reduces the temperature impact of the cold air from the first air outlet 1112 on the hot air from the second air outlet 122. This results in better temperature control of the mixed air blowing onto the object being cared for, preventing the care device 100 from failing to effectively care for the object in low ambient temperatures. This improves the reliability of the care device 100 and enhances the user experience.

[0053] It should be noted that the front end of the air duct 10 is provided with an air outlet (not shown). The air flowing from the first air outlet 1112 and the second air outlet 122 mixes and then flows out after being guided by the air outlet. In some embodiments of this utility model, the air outlet is detachably provided at the front end of the air duct 10, so that different shaped air outlets can be selectively installed at the front end of the air duct 10 according to different usage requirements of the nursing device 100. The constant temperature control of the nursing device 100 means that the nursing device 100 needs to ensure that the temperature applied to the object to be cared for remains basically constant under different modes, different room temperatures, or different air outlets.

[0054] Furthermore, in this embodiment of the present invention, due to the opening of the second air inlet 14, the air volume of the guiding heating module 13 is relatively sufficient. If it is necessary to increase the hot air effect of the nursing device 100, the power of the heating module 13 can be increased to achieve a higher heating temperature of the air by the heating module 13. There is no need to increase the power of the first fan 22 to increase the air volume of the guiding heating module 13, which can reduce the size and weight of the first fan 22 and reduce the noise generated by the first fan 22.

[0055] Conversely, the opening of the second air inlet 14 can meet the hot air demand of the nursing device 100 even with a smaller air volume flowing from the third air duct 21 to the second air duct 12. Thus, the nursing device 100 can use a first fan 22 with a smaller power. The first fan 22 with a smaller power will also be smaller in size and weight, making the nursing device 100 lighter and smaller. At the same time, the first fan 22 with a smaller power will also generate less noise when it is working, which can improve the user experience.

[0056] In some embodiments of this utility model, the duct wall 11 is annular. The annular duct wall 11 is disposed inside the air duct 10, and the duct wall 11 and the inner wall of the air duct 10 are radially spaced apart from each other. This not only makes the airflow in the first duct 111 smooth and stable, and reduces the wind noise of the airflow in the first duct 111, but also improves the stability of the airflow in the second duct 12 and reduces the wind noise of the airflow in the second duct 12.

[0057] In the first embodiment of this utility model, combined with Figures 2-8 As shown, the second air inlet 14 is formed by a notch on the duct wall 11, and / or the second air inlet 14 is annular.

[0058] Specifically, a notch is directly made in the air duct wall 11, forming a second air inlet 14. This not only simplifies the creation of the second air inlet 14 but also allows air to flow more directly from the first air duct 111 to the second air duct 12 through the second air inlet 14, reducing air loss during the flow. It should be noted that the shape of the notch can be, but is not limited to, arc or semi-circle, and the shape of the second air inlet 14 can be selectively set according to the different needs of different nursing devices 100.

[0059] Alternatively, the second air inlet 14 can also be annular, and the second air inlet 14 can be arranged around the circumference of the air duct wall. This not only allows a larger volume of air to enter the second air duct 12 through the second air inlet 14 in the first air duct 111, but also makes the air flowing from the first air duct 111 to the second air duct 12 more uniform.

[0060] In the first embodiment of this utility model, combined with Figures 2-8 As shown, the vertical projection interval of the second air inlet 14 is positioned behind the vertical projection of the handle 20. Specifically, since most of the air entering the first air duct 111 from the second air duct 12 will blow directly towards the second air outlet 122, which is located at the front of the handle 20, positioning the second air inlet 14 behind the handle 20 prevents the air entering the second air duct 12 from the third air duct 21 from colliding with the air flowing from the second air inlet 14 towards the second air duct 12, thus avoiding significant noise and turbulence. This could even cause the air pressure from the third air duct 21 entering the second air duct 12 to obstruct the airflow from the second air inlet 14, leading to its failure. This ensures smooth airflow from the second air inlet 14 and optimizes the structural design of the nursing device 100.

[0061] It should be noted that, since the second air inlet 14 in this embodiment of the present invention is directly opened on the circumferential side of the air duct wall 11, the air flowing from the second air inlet 14 to the second air duct 12 initially flows radially. If the second air inlet 14 is set on the front side of the handle 20, the air flowing from the third air duct 21 to the second air duct 12 flows in the front-back direction after entering the second air duct 12. When the air flowing out of the second air inlet 14 merges with the air flowing from the third air duct 21 to the second air duct 12, the different flow directions will generate the above-mentioned large noise and turbulence.

[0062] In some embodiments of this utility model, such as Figure 3 As shown, a first guide member 17 is provided at the second air inlet 14. The first guide member 17 allows the airflow from the first air duct 111 to flow more smoothly and stably through the second air inlet 14 to the second air duct 12, and also reduces wind noise. The first guide member 17 can be an inclined guide member or an arc-shaped guide member. In this embodiment, the first guide member 17 can be disposed within the first air duct 111, allowing more airflow to converge into the second air duct 12. The first guide member 17 can also be disposed within the first air duct 111, making the first air duct 111 smoother and preventing turbulence. Alternatively, the first guide member 17 can extend from within the first air duct 111 into the second air duct 12; this application does not impose any limitations on this.

[0063] In some embodiments of this utility model, the first guide member 17 and the air duct wall 11 can be integrally formed structural components, which can not only improve the stability of the connection and fixation between the first guide member 17 and the air duct wall 11, but also simplify the production and manufacturing of the nursing device 100.

[0064] It should be noted that since the extension directions of the second air duct 12 and the third air duct 21 are perpendicular to each other, by setting a second guide between the second air outlet 122 and the second air duct 12, the air in the third air duct 21 can flow more smoothly and stably through the third air outlet 212 to the second air duct 12, and wind noise can be reduced. The second guide can be a sloping guide or an arc-shaped guide.

[0065] It should be noted that the second air guide can be integrally formed with the air duct 10 or the handle 20. This not only improves the stability of the installation of the second air guide, but also simplifies the production of the nursing device 100.

[0066] In addition, in this embodiment of the utility model, the size of the second air inlet 14 and the distance between the second air inlet 14 and the handle 20 need to be adjusted before the nursing device 100 is assembled, so as to prevent the second air inlet 14 from being in a positive pressure device, thereby preventing the air flowing into the second air duct 12 from the third air duct 21 from flowing to the first air inlet 1111 of the first air duct 111 through the second air inlet 14, causing air leakage in the nursing device 100. This can further improve the structural reliability of the nursing device 100.

[0067] It should be noted that the air duct wall 11 can be a cylindrical tube or an irregularly shaped tube, which can be selectively set according to the different usage needs of the nursing equipment 100.

[0068] Combination Figure 6 As shown, a second fan 15 is also provided in the second air duct 12. The second fan 15 is connected to the second air inlet 14 to drive the air in the first air duct 111 to enter the second air duct 12 through the second air inlet 14.

[0069] Specifically, the second fan 15 can accelerate the air flowing from the first air duct 111 to the second air duct 12 through the second air inlet 14. This not only improves the air intake efficiency of the second air duct 12, but also increases the amount of air entering the second air duct 12 from the first air duct 111. On the other hand, it can also prevent the air flowing from the third air duct 21 to the second air duct 12 from flowing to the outside through the second air inlet 14, which would cause the nursing device 100 to leak air, thus improving the reliability of the nursing device 100.

[0070] In addition, by setting a second fan 15, the air flowing from the third air duct 21 to the second air duct 12 can be more reliably prevented from flowing to the outside through the second air inlet 14, thereby eliminating air leakage in the nursing device 100. In this case, the size of the second air inlet 14 and the distance between it and the handle 20 do not need to be made too precise during the manufacturing of the nursing device 100, which simplifies the manufacturing of the nursing device 100.

[0071] In the second embodiment of this utility model, combined with Figures 8-10 As shown, the duct wall 11 includes a first wall 112 and a second wall 113. The second wall 113 is located in front of the first wall 112. The second wall 113 is at least partially recessed radially inward relative to the first wall 112, so that a step portion 114 is at least partially formed between the second wall 113 and the first wall 112. The step portion 114 forms a second air inlet 14.

[0072] Specifically, by setting the second wall 113 on the front side of the first wall 112, and setting the second wall 113 at least partially recessed radially inward relative to the first wall 112, the radially recessed part of the second wall 113 will form a height difference with the first wall 112 in the radial direction. That is, a step portion 114 is formed between the first wall 112 and the second wall 113. The step portion 114 forms the second air inlet 14. Since the air in the first air duct 111 flows in the front-back direction, the second air inlet 14 is opened on the step portion 114, and the air flowing out from the second air inlet 14 to the second air duct 12 also flows in the front-back direction.

[0073] This configuration serves two purposes. Firstly, the airflow from the third air duct 21 to the second air duct 12 also flows in the front-to-back direction after entering the second air duct 12. This allows the airflow from the second air inlet 14 to the second air duct 12 to follow the flow of the airflow from the third air duct 21 to the second air duct 12. This not only reduces noise when the two airflows converge and prevents turbulence, but also prevents the airflow from the third air duct 21 to the second air duct 12 from obstructing the airflow from the second air inlet 14.

[0074] It should be noted that after the second wall 113 is recessed towards the radial center relative to the first wall 112 to form a stepped portion 114, the second air inlet 14 is opened on the stepped portion 114, which can ensure that the air flowing out of the second air inlet 14 flows in the front-back direction. Furthermore, since the air in the first air duct 111 itself flows in the front-back direction, the step portion 114 forms the second air inlet 14. The air outlet of the second air inlet 14 is forward, and the second air inlet 14 can follow the air flow direction of the first air duct 111, which can allow more air to flow out from the second air inlet 14, and can further increase the air volume of the air flowing from the first air duct 111 to the second air duct 12 through the second air inlet 14.

[0075] Combination Figures 8-10 As shown, the second wall 113 is concentrically arranged with the first wall 112, and the diameter of the second wall 113 is smaller than the diameter of the first wall 112, so that a step portion 114 is formed between the second wall 113 and the first wall 112, and the step portion 114 forms the second air inlet 14.

[0076] Specifically, by setting the second wall 113 and the first wall 112 concentrically, and setting the diameter of the second wall 113 to be smaller than the diameter of the first wall 112, the second wall 113 is radially recessed. This allows a step portion 114 that extends circumferentially and is radially uniform in size to be formed between the first wall 112 and the second wall 113. The step portion 114 forms the second air inlet 14, which makes the airflow from the second air inlet 14 to the second air duct 12 more uniform and the airflow from the second air inlet 14 more stable.

[0077] In addition, in the above embodiment, the air flowing out from the second air outlet 122 can create a negative pressure at the first air outlet 1112 of the first air duct 111, thereby entraining and accelerating the air in the first air duct 111. Furthermore, when the air in the second air duct 12 flows, it can also create a negative pressure at the second air inlet 14, thereby entraining and accelerating the air in the first wall 112. This allows the nursing device 100 to entrain and accelerate the air in the air duct wall 11 in stages, maximizing the use of the Bernoulli effect, improving the air outlet stability of the nursing device 100, and making the air outlet of the nursing device 100 more directional.

[0078] In the second embodiment of this utility model, combined with Figures 8-10 As shown, the vertical projection interval of the second air inlet 14 is positioned in front of the vertical projection of the handle 20. Specifically, the vertical projection interval of the second air inlet 14 is positioned in front of the vertical projection of the handle 20, which allows the second air inlet 14 to be located in front of the handle 20. Since the second air inlet 14 faces forward, if the second air inlet 14 were located behind the handle 20, it would cause the second air inlet 14 and the third air outlet 212 to be positioned opposite each other in the front-back direction. This would easily cause the air from the second air duct 12 to flow through the third air outlet 212 to the second air inlet 14, and then through the second air inlet 14 to the outside of the nursing device 100, causing air leakage in the nursing device 100. This can further improve the reliability of the nursing device 100 and enhance the user experience.

[0079] It should be noted that in some embodiments of this utility model, the first wall 112 and the second wall 113 are spaced apart, and the entire area between the first wall 112 and the second wall 113 is the second air inlet 14. This makes the second air inlet 14 annular, and the annular second air inlet 14 extends circumferentially on the air duct wall 11. This not only improves the uniformity of air outlet of the second air inlet 14, but also increases the air volume of the air in the first air duct 111 flowing to the second air duct 12 through the second air inlet 14.

[0080] In other embodiments of this invention, a connecting plate may be connected between the first wall 112 and the second wall 113 to form a stepped portion 114. The second air inlet 14 may be formed on the connecting plate. In this case, the second air inlet 14 may be annular, arc-shaped, or semi-circular, and its shape can be selectively set according to the different needs of different nursing appliances 100. It should be noted that the shape of the second air inlet 14 includes, but is not limited to, annular, arc-shaped, and semi-circular shapes.

[0081] In some other embodiments of this utility model, there are multiple second air inlets 14, which are spaced apart in the circumferential direction of the duct wall 11. Specifically, by setting multiple second air inlets 14 and making them spaced apart in the circumferential direction of the duct wall 11, not only can the air outlet of the second air inlets 14 be uniform, but also sufficient air outlet can be ensured.

[0082] In some embodiments of this utility model, the second air inlet 14 is provided with a protective member 16. Specifically, no other structural components are provided in the hollow air duct wall 11. Even if there are foreign objects and dust in the air entering the first air duct 111 from the first air inlet 1111, the protective member 16 can filter and block the foreign objects or dust in the first air duct 111 under the protection of the protective member 16. This can ensure that the circuit boards and electronic components inside the second air duct 12 will not be corroded or damaged by foreign objects carried by the second air inlet 14, which can improve the safety of the air outlet of the second air inlet 14 and extend the user experience of the nursing device 100.

[0083] In some embodiments of this utility model, by reasonably setting the shape of the protective member 16, the protective member 16 can not only filter and block the wind, but also guide the wind. In this case, the second air inlet 14 does not need to be separately set with the first guide member 17, which can further simplify the production and manufacturing of the nursing device 100.

[0084] In some embodiments of this utility model, the second air inlet 14 is provided with a damper 141, which selectively opens and closes the second air inlet 14. Specifically, by providing a damper 141 at the second air inlet 14, the damper 141 can selectively open and close the second air inlet 14 according to the needs of the nursing device 100. For example, when the nursing device 100 has a high demand for hot air, the damper 141 can be controlled to open the second air inlet 14, and when the nursing device 100 has a low demand for hot air, the damper 141 can be controlled to close the second air inlet 14. This allows the nursing device 100 to be used in more environments and under more needs, thereby improving the applicability of the nursing device 100.

[0085] In some embodiments of this utility model, combined with Figure 7 As shown, the second air inlet 14 can also be located on the rear end of the air duct 10 corresponding to the second air channel 12. Specifically, by providing the second air inlet 14 on the rear end of the air duct 10 corresponding to the second air channel 12 and connecting the second air inlet 14 to the second air outlet 122, the air intake of the second air channel 12 can be further increased, thereby further increasing the air volume of the air heated by the heating module 13. This can further reduce the impact of the cold air flowing out from the first air outlet 1112 on the constant temperature control of the air outlet of the nursing device 100, and further reduce the size and weight of the first fan 22, making the nursing device 100 lighter and smaller, and reducing the noise of the first fan 22 during operation.

[0086] In some embodiments of this utility model, the second air inlet 14 can also be opened on the outer wall of the air duct 10, and the second air inlet 14 is spaced apart from the rear side of the handle 20, so that air can also be introduced into the second air duct 12.

[0087] Combination Figure 1 As shown, the heating module 13 is located in front of the second air inlet 14 and in front of the third air duct 21.

[0088] Combination Figures 2-10 As shown, the vertical projection interval of the heating module 13 is positioned in front of the vertical projection of the second air inlet 14, and the vertical projection interval of the heating module 13 is also positioned in front of the vertical projection of the handle 20. Specifically, by positioning the heating module 13 in front of the second air inlet 14 and the handle 20, regardless of the relative positions of the second air inlet 14 and the handle 20 in the front-back direction, the air flowing from the second air inlet 14 or from the third air duct 21 of the handle 20 to the second air duct 12 will flow forward through the heating module 13. This ensures that the heating module 13 heats the air in the second air duct 12 more fully and stably, thereby improving the heating effect of the heating module 13 on the air in the second air duct 12.

[0089] Furthermore, the heating module 13 is positioned adjacent to the second air outlet 122, which ensures that the air can quickly flow out from the second air outlet 122 after being heated. This avoids excessive heat loss of the air heated by the heating module 13 during its flow from the heating module 13 to the second air outlet 122, and can further improve the constant temperature control effect of the second air outlet 122.

[0090] In some embodiments of this utility model, combined with Figure 11As shown, the heating module 13 is a whole and extends circumferentially in the second air duct 12. This not only improves the heating efficiency of the heating module 13 in heating the air in the second air duct 12, but also makes the heating of the air in the second air duct 12 by the heating module 13 more uniform.

[0091] In some other embodiments of this utility model, there are multiple heating modules 13, which are discretely arranged circumferentially and / or axially in the second air duct 12. This reduces the volume of the heating modules 13 while ensuring heating efficiency and uniformity, thereby reducing the cost of the nursing device 100. In this embodiment, the heating module 13 is block-shaped.

[0092] It should be noted that the inner wall of the air duct 10 and / or the outer wall of the air duct wall 11 are provided with heat insulation components. This ensures that the heat emitted by the heating module 13 is sealed in the second air duct 12. This not only improves the heating effect of the air in the second air duct 12, but also prevents the heat from the heating module 13 from spreading from the second air duct 12 to the outside, affecting other structures of the nursing device 100, and preventing the nursing device 100 from scalding the user.

[0093] In some embodiments of this utility model, the heating module 13 can be configured into a specific shape so that it can act as a wind guide, thereby further improving the smoothness of airflow in the second air duct 12.

[0094] In some specific embodiments of this utility model, the heating module 13 can be an ultra-thin sheet heating module 13. The ultra-thin sheet heating module 13 is composed of multiple layers of materials, such as a conductive layer, an insulating layer, and a heat dissipation layer or a protective layer. The ultra-thin sheet heating module 13 has a small thickness, which makes it easy to install in narrow spaces. Furthermore, due to its small thermal mass and efficient heating element, it can quickly reach the set temperature, which allows the nursing device 100 to respond to hot air quickly.

[0095] Most importantly, the ultra-thin sheet heating module 13 is flexible enough to change its shape by applying external force, thus enabling it to adapt to curved surfaces or other complex shapes, and even have the function of guiding airflow.

[0096] In some other specific embodiments of this utility model, the heating module 13 can be a resistance wire heating module 13, which includes a resistance wire and a support. The support can be a heat-resistant material such as mica, and the resistance wire can be a material with high thermal conductivity such as nickel-chromium metal wire. The resistance wire is wound around the outside of the support, and the support allows air to pass around and between the resistance wire and be effectively heated.

[0097] In addition, a first temperature sensor is also provided on the heating module 13, which can sense the temperature changes of the heating module 13 and its surrounding environment in real time. Through the electrical connection between the first temperature sensor and the circuit board, the temperature during the heating process can be continuously monitored to ensure it remains within the set safe and effective range. Based on the temperature feedback provided by the first temperature sensor, the circuit board can adjust the heating power according to the difference between the actual temperature and the preset target temperature. For example, when the detected temperature is lower than the set value, the circuit board can increase the heating power; conversely, if the temperature is too high, heating can be reduced or stopped to achieve precise temperature control. Furthermore, when the first temperature sensor detects that the temperature of the heating module 13 is too high, the circuit board can shut down the heating module 13 based on the sensor's detection result, providing over-temperature protection for the heating module 13.

[0098] In some embodiments of this invention, the first temperature sensor may be a thermistor.

[0099] In some embodiments of this invention, a circuit board is also provided in the second air duct 12. This makes full use of the space in the second air duct 12. The circuit board is spaced apart from the heating module 13 and located behind the heating module 13. This ensures the stability of the circuit board's installation and prevents the heat from the heating module 13 from affecting or even damaging the circuit board. In addition, this allows the air in the second air duct 12 to dissipate heat from the circuit board when it is not being heated by the heating module 13, which can further extend the service life of the circuit board.

[0100] In some other embodiments of this utility model, a circuit board can also be installed in the third air duct 21 of the handle 20. This not only makes full use of the space in the handle 20, but also allows the air in the third air duct 21 to dissipate heat from the circuit board, thereby improving the service life of the circuit board.

[0101] In addition, the circuit board can be set into a specific shape so that it also has the function of guiding air. This can further improve the smoothness of airflow in the second air duct 12 and prevent the circuit board from affecting the airflow in the second air duct 12. And / or it can further improve the smoothness of airflow in the third air duct 21 of the handle 20 and prevent the circuit board from affecting the smoothness of airflow in the third air duct 21.

[0102] It should be noted that the circuit board can be selectively placed in the handle 20 and / or the air duct 10 according to the internal structural layout of the nursing device 100 and the process requirements of the nursing device 100. This can facilitate the production and manufacturing of the nursing device 100 and improve the rationality of the structural layout of the nursing device 100.

[0103] In some other embodiments of this utility model, the air outlet is a retractable air outlet, which can selectively extend and retract to different lengths according to different usage needs of the nursing device 100. When the air outlet is in a fully retracted state, the air outlet is hidden inside the air duct 10, so there is no need to repeatedly install and disassemble the air outlet, which can facilitate the user's use and storage.

[0104] It should be noted that by setting a second temperature sensor at the front end of the air duct 10 and connecting both the heating module 13 and the second temperature sensor to the circuit board, in order to ensure that the temperature flowing out of the air outlet of the nursing appliance 100 is constant under different modes, different room temperatures, and different air outlets, the circuit board can selectively control the heating module 13 to increase or decrease its power according to the detection of the temperature sensor.

[0105] In some embodiments of this utility model, the front end of the second air duct 12 is at least partially provided with a second air outlet 122, and the front end of the second air duct 12 is at least partially closed by a sealing plate. The sealing plate is provided with a plurality of electrical components, which can be electrically connected to the circuit board in the second air duct 12 or the handle 20. This not only allows the electrical components to make full use of the space at the front end of the air duct 10, but also makes it more convenient and direct for the user to observe the electrical components at the front end of the air duct 10.

[0106] The electronic components may include, but are not limited to, at least one of the following: a TOF (Time of Flight) sensor, an accessory identification sensor, an NFC (Near Field Communication) device, a module that can store essence, an accessory connection and mounting device, a thermal imaging device, a scalp health detection module, and a lighting effect device. This can meet the different usage needs of users in different scenarios and improve the user experience.

[0107] In some embodiments of this utility model, the first air outlet 1112 and the second air outlet 122 release airflow independently from the front end of the nursing device 100. This can prevent the airflow from the first air outlet 1112 and the airflow from the second air outlet 122 from interfering with each other, and can prevent the airflow from the first air outlet 1112 or the second air outlet 122 from flowing back, which would cause unstable airflow from the nursing device 100, poor nursing effect of the nursing device 100, and reduce the user's experience of using the nursing device 100.

[0108] 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.

[0109] 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.

[0110] 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 nursing appliance, characterized in that, include: A ventilation duct, wherein a duct wall is provided inside the ventilation duct, the duct wall and the inner wall of the ventilation duct are radially spaced apart, a first duct is formed inside the duct wall, a first air inlet and a first air outlet are provided at both ends of the first duct in the front-rear direction, and a second duct is defined between at least a portion of the inner wall of the ventilation duct and the duct wall, and a second air outlet is provided at the front end of the second duct. The air duct wall has a second air inlet formed between the first air inlet and the first air outlet, and the first air duct is connected to the second air duct through the second air inlet.

2. A nursing appliance, characterized in that, include: A ventilation duct, wherein a duct wall is provided inside the ventilation duct, the duct wall and the inner wall of the ventilation duct are radially spaced apart, a first duct is formed inside the duct wall, a first air inlet and a first air outlet are provided at both ends of the first duct in the front-rear direction, and a second duct is defined between at least a portion of the inner wall of the ventilation duct and the duct wall, and a second air outlet is provided at the front end of the second duct. The air duct wall forms a second air inlet between the first air inlet and the first air outlet. Before reaching the first air outlet, at least part of the air entering the nursing device through the first air inlet flows into the second air duct.

3. A nursing appliance, characterized in that, include: A ventilation duct, wherein a duct wall is provided inside the ventilation duct, the duct wall and the inner wall of the ventilation duct are radially spaced apart, a first air duct is formed inside the duct wall, a first air inlet and a first air outlet are provided at both ends of the first air duct in the front-rear direction, and a second air duct is defined between at least a portion of the inner wall of the ventilation duct and the duct wall, a heating module is provided in the second air duct, and a second air outlet is provided at the front end of the second air duct; The air duct wall has a second air inlet formed between the first air inlet and the first air outlet, through which the first air inlet can approach the heating module.

4. The nursing appliance according to claim 3, characterized in that, The duct wall is annular, and the second air inlet is formed by a notch in the duct wall.

5. The nursing appliance according to claim 4, characterized in that, The second air inlet is annular.

6. The nursing appliance according to claim 4, characterized in that, The duct wall includes a first wall and a second wall, the second wall being located in front of the first wall, and the second wall being at least partially recessed radially inward relative to the first wall to form a step between the second wall and the first wall, the step forming the second air inlet.

7. The nursing appliance according to claim 6, characterized in that, The second wall is concentrically arranged with the first wall, and the diameter of the second wall is smaller than the diameter of the first wall, so that a step portion is formed between the second wall and the first wall, and the step portion forms the second air inlet.

8. The nursing appliance according to claim 5 or 7, characterized in that, The second air inlet is equipped with a protective component.

9. The nursing appliance according to claim 5 or 7, characterized in that, The second air inlet is provided with a damper, which selectively opens and closes the second air inlet.

10. The nursing appliance according to claim 5 or 7, characterized in that, The second air inlet is equipped with a first air guide.

11. The nursing appliance according to claim 5 or 7, characterized in that, It also includes a handle, which is connected to the lower side of the air duct. A third air duct is provided inside the handle, and a first fan is provided inside the third air duct. A third air inlet and a third air outlet are respectively provided at the two ends of the third air duct in the vertical direction. The third air outlet is connected to the second air duct. A heating module is provided in the second air duct and the heating module is located in front of the third air duct.

12. The nursing appliance according to claim 11, characterized in that, There are multiple heating modules, which are discretely arranged circumferentially and / or axially in the second air duct.

13. The nursing appliance according to claim 11, characterized in that, A second air guide is provided between the third air outlet and the second air duct.

14. The nursing appliance according to claim 11, characterized in that, The first air outlet and the second air outlet release airflow independently from the front end of the nursing device.

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