Air duct structure and air blowing equipment

Abstract

The utility model discloses an air duct structure and air blowing equipment. The air duct structure comprises an air duct main body, an air guide piece and a circuit structure; an air inlet and an air outlet which are communicated with each other are formed in the air duct main body; the air guide piece is arranged in the air duct body and provided with a first side and a second side which are oppositely arranged in the axial direction of the air duct body, and the air outlet is formed close to the first side of the air guide piece; the circuit structure is arranged on the second side of the air guide piece; at least part of airflow entering the air duct body from the air inlet can flow to the second side from the first side under the guiding effect of the air guiding piece, and the airflow flows towards the direction of the air outlet after flowing through the circuit structure. According to the air duct structure, on one hand, the temperature of the heating side can be prevented from being conducted to the circuit structure, on the other hand, heat of the circuit structure can be taken away through airflow guiding, the temperature on the circuit structure can be effectively reduced, normal work of the circuit structure is guaranteed, and the service life of the air duct structure is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household appliances, and particularly relates to a wind tube structure and a blowing device. BACKGROUND

[0002] Intelligent blowing devices, such as hair dryers, hair driers or styling machines, can form directional hot air flow to dry and process hair, clothes and the like. The blowing device generally includes a circuit structure and a heating element. The circuit structure can control the opening or closing of the blowing device, the size or temperature of the air outlet, and the like, so that the blowing device can better meet the use requirements of different users. However, due to the fact that the circuit structure itself generates a large amount of heat when working, when the blowing device is small in size, the temperature of the circuit structure will be higher under the influence of the heating element inside the blowing device, and the working temperature of some components will exceed the rated normal use temperature for a long time, resulting in damage to the circuit structure and affecting the service life of the blowing device. SUMMARY

[0003] In order to solve the above technical problems, the main purpose of the utility model is to provide a wind tube structure and a blowing device, which aims to solve the problem that the temperature of the internal circuit structure of the traditional blowing device will rise after working for a long time, resulting in the risk of damage to components and affecting the service life of the blowing device.

[0004] In order to achieve the above purpose, the utility model provides a wind tube structure, which comprises:

[0005] A wind tube body, wherein an air inlet and an air outlet are formed in the wind tube body and are connected to each other;

[0006] A wind guide element, which is arranged in the wind tube body and has a first side and a second side arranged opposite to each other along the axial direction of the wind tube body, and the air outlet is arranged close to the first side of the wind guide element;

[0007] A circuit structure, which is arranged on the second side of the wind guide element;

[0008] Wherein, the air flow entering the wind tube body from the air inlet can flow from the first side to the second side of the wind guide element under the guidance of the wind guide element, and then flow towards the direction of the air outlet after flowing through the circuit structure.

[0009] Optionally, the wind guide element comprises an outer ring portion, an inner ring portion and a connecting baffle connecting the outer ring portion and the inner ring portion, the outer ring portion is arranged around the outer circumferential side of the inner ring portion, the connecting baffle is provided with an air flow hole, and the air flow entering the wind tube body from the air inlet can flow towards the circuit structure through the air flow hole.

[0010] Optionally, the circuit structure comprises a circuit board and a plurality of components disposed on the circuit board, the circuit board is disposed close to the connecting baffle, and at least part of the components are located inside the inner ring portion.

[0011] Optionally, the circuit board and the air inlet are misaligned in the orthographic projection on the plane where the air inlet is located.

[0012] Optionally, the outer ring portion is provided with an air inlet gap on one side, the air inlet gap is in communication with at least part of the air inlet.

[0013] Optionally, the connecting baffle and the circuit board form an air passing gap, the outer ring portion is fitted on the inner side of the air duct body, the air flow from the first side of the air guide member enters the air passing gap through the air passing hole and flows towards the air outlet through the inner side of the inner ring portion.

[0014] Optionally, a plurality of abutting portions are protruded on the connecting baffle, the plurality of abutting portions are located in the air passing gap and abut against the circuit board; and / or,

[0015] The inner side of the inner ring portion is provided with a plurality of mounting portions, the circuit board is provided with a plurality of matching portions, and the plurality of mounting portions and the plurality of matching portions are one-to-one corresponding and matched.

[0016] Optionally, the air duct structure further comprises a heating member disposed in the air duct body, the heating member is disposed on the first side of the air guide member, the heating member forms a heating channel therein, and the inner ring portion is coaxially disposed with the heating channel.

[0017] Optionally, the air passing hole is provided with a plurality of air passing holes, and the plurality of air passing holes are located in the region between the outer ring portion and the inner ring portion.

[0018] The utility model further provides a blowing equipment comprising the air duct structure.

[0019] The technical scheme provided by the utility model has the following beneficial effects:

[0020] The duct structure provided by this utility model includes a duct body, an air guide component, and a circuit structure disposed within the duct body. The duct body has an air inlet and an air outlet. Cold air enters the duct body through the air inlet, and the heated air flows out through the air outlet for user use. Furthermore, the circuit structure is located on the second side of the air guide component, which acts as a barrier between the circuit structure and the air outlet. This prevents the temperature of the hot air from radiating onto the circuit structure. Additionally, after entering the duct body, a portion of the cold air flows towards the circuit structure under the influence of the air guide component, carrying away its own heat and allowing it to exit through the air outlet. This duct structure effectively reduces the temperature of the circuit structure, ensuring its normal operation and extending its service life. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A schematic diagram of an embodiment of a blower provided by this utility model;

[0023] Figure 2 for Figure 1 A cross-sectional structural diagram of the blower described herein;

[0024] Figure 3 for Figure 1 An exploded structural diagram of the ventilation duct structure described above;

[0025] Figure 4 for Figure 1 A schematic diagram of the air guide component described above;

[0026] Figure 5 for Figure 4 A structural schematic diagram of the air guide component described in the text from another perspective.

[0027] Explanation of icon numbers:

[0028] 1000 - hair dryer; 100 - air duct structure; 1 - air duct main body; 11 - air inlet; 12 - air outlet; 2 - air guide; 21 - outer ring part; 22 - inner ring part; 23 - connecting baffle; 231 - abutting part; 232 - air passing hole; 3 - circuit structure; 31 - circuit board; 32 - component; 4 - heating element; 200 - handle structure; 201 - fan; 202 - through hole.

[0029] The purposes, functional features and excellent effects of the utility model are described further below in combination with specific embodiments and the drawings. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be described clearly and completely below in combination with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] It should be noted that if the embodiments of the utility model involve directional indications, the directional indications are only used to explain the relative positional relationship, movement condition and the like between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0032] In addition, if the embodiments of the utility model involve descriptions such as "first", "second" and the like, the descriptions of "first", "second" and the like are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes A scheme, or B scheme, or A and B schemes. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the utility model.

[0033] The utility model provides a kind of air duct structure 100, the air duct structure 100 is suitable for hair dryer 1000, by the hair dryer 1000, external cold air flow can be guided into the air duct structure 100, form hot air flow and blow out, to be suitable for the drying or styling of hair, clothes etc.

[0034] Specifically, please refer to Figures 1 to 3In the embodiment, the air duct structure 100 comprises an air duct body 1, a wind guide 2 and a circuit structure 3, the air duct body 1 is provided with an air inlet 11 and an air outlet 12 which are connected in communication, the wind guide 2 is arranged in the air duct body 1 and has a first side and a second side which are oppositely arranged along the axial direction of the air duct body 1, the air outlet 12 is arranged close to the first side of the wind guide 2, and the circuit structure 3 is arranged on the second side of the wind guide 2, wherein the airflow entering the air duct body 1 from the air inlet 11 can at least partially flow from the first side to the second side of the wind guide 2 under the guidance of the wind guide 2 and then flow towards the direction of the air outlet 12 after flowing through the circuit structure 3.

[0035] In the embodiment, the cold airflow can enter the air duct body 1 from the air inlet 11, and the hot airflow formed after being heated can flow out from the air outlet 12 for use by a user, and the circuit structure 3 is arranged on the second side of the wind guide 2, the circuit structure 3 and the air outlet 12 are separated by the wind guide 2, so that the temperature of the hot airflow can be prevented from radiating to the circuit structure 3 under the separation of the wind guide 2, and the cold airflow entering the air duct body 1 can flow to the circuit structure 3 under the action of the wind guide 2, the heat of the circuit structure 3 can be taken away when the cold airflow flows through the circuit structure 3, and the heat of the circuit structure 3 can be taken away from the air outlet 12. By the air duct structure 100, on the one hand, the temperature of the heating side can be prevented from being conducted to the circuit structure 3, and on the other hand, the heat of the circuit structure 3 can be taken away by airflow guidance, the temperature of the circuit structure 3 can be effectively reduced, the normal work of the circuit structure 3 can be ensured, and the service life of the air duct structure 100 can be prolonged.

[0036] Preferably, the air inlet 11 is arranged on the circumferential side of the air duct body 1, the air outlet 12 is formed on one end of the air duct body 1 along the axial direction, the wind guide 2 is arranged close to the air inlet 11, and the circuit structure 3 is not directly opposite to the air inlet 11, so as to prevent the excessive air volume from affecting the looseness of the components 32 on the circuit structure 3. In the embodiment, the end of the air duct body 1 provided with the air outlet 12 is defined as the front end, the air inlet 11 is arranged close to the rear end of the air duct body 1, the first side of the wind guide 2 is arranged towards the front, the second side of the wind guide 2 is arranged towards the rear, and at least part of the circuit structure 3 is arranged on the rear side of the wind guide 2. The following description about the orientation can be referred to.

[0037] For the circuit structure 3, the components 32 are arranged on the circuit board 31, and the circuit board 31 is arranged on the second side of the wind guide 2. Figure 2 and Figure 3As shown, the circuit structure 3 comprises a circuit board 31 and a plurality of components 32 arranged on the circuit board 31. The circuit board 31 is flat and arranged behind the air guide 2. The circuit board 31 has two mounting surfaces for mounting the components 32. Each mounting surface extends along the radial direction of the air duct body 1. The components 32 with large heat generation are arranged on the front mounting surface of the circuit board 31, i.e., towards the air guide 2, so that the air flow can better flow through the components 32 with large heat generation and better take away the hot air flow, thereby better dissipating heat from the circuit structure 3.

[0038] Further, the circuit board 31 and the air inlet 11 are arranged in a staggered manner in the projection on the plane of the air inlet 11. That is, the circuit board 31 is not opposite to the air inlet 11, so that the cold air flow entering the air duct body 1 from the air inlet 11 is not directly blown towards the circuit board 31, thereby better preventing the components 32 on the circuit board 31 from loosening and ensuring the function of the circuit structure 3.

[0039] In combination with Figure 4 and Figure 5 As shown, the air guide 2 comprises an outer ring portion 21, an inner ring portion 22, and a connecting baffle 23 connecting the outer ring portion 21 and the inner ring portion 22. The outer ring portion 21 surrounds the outer periphery of the inner ring portion 22. Preferably, the outer ring portion 21 and the inner ring portion 22 are coaxially arranged with the air duct body 1. The connecting baffle 23 is connected to the rear ends of the outer ring portion 21 and the air ring portion, so as to be arranged close to the circuit board 31. The connecting baffle 23 is provided with air flow holes 232. The air flow entering the air duct body 1 from the air inlet 11 can pass through the air flow holes 232 and flow towards the circuit structure 3. The connecting baffle 23 is arranged on the rear side of the air inlet 11 to avoid the air flow directly flowing towards the circuit structure 3, so as to prevent the components 32 or the connecting wires from loosening. By arranging the air flow holes 232 on the connecting baffle 23, part of the cold air flow can pass through the air flow holes 232 and flow towards the circuit structure 3, thereby taking away the temperature at the circuit structure 3 by the cold air flow.

[0040] Preferably, the air flow holes 232 are provided in plurality. The air flow holes 232 are arranged in the region between the outer ring portion 21 and the inner ring portion 22, so that more air flow enters the circuit structure 3, thereby better dissipating heat.

[0041] Moreover, an air inlet gap is arranged at one side of the outer ring portion 21, which is in communication with at least part of the air inlet 11, so that the air flow can better enter between the outer ring portion 21 and the inner ring portion 22, and ensure that at least part of the air flow can enter the circuit structure 3 from the air passing hole 232 on the connecting baffle 23, so as to ensure the heat dissipation effect at the circuit structure 3.

[0042] It can be understood that, after flowing through the circuit structure 3, the cold air flow can directly flow towards the air outlet 12 to be discharged from the air duct structure 100, or the cold air flow can flow towards the direction of the air outlet 12 after flowing through the circuit structure 3 and then passing through the air guide 2. It is obvious that the latter does not need to additionally increase the channel for communication between the circuit structure 3 and the air outlet 12 in the air duct body 1, so that the internal layout of the air duct structure 100 is more compact and occupies less space. Specifically, the circuit board 31 is arranged close to the connecting baffle 23, and at least part of the components 32 are located on the inner side of the inner ring portion 22, so that the air flow can flow out from the inner side of the inner ring portion 22 after flowing through the circuit board 31.

[0043] In which, as shown in Figure 2 The over-air gap is formed between the connecting baffle 23 and the circuit board 31, the shape of the outer ring portion 21 matches the shape of the air duct body 1, the outer ring portion 21 is fitted and arranged on the inner side of the air duct body 1, the air flow from the first side of the air guide 2 enters the over-air gap after passing through the air passing hole 232, and flows towards the air outlet 12 through the inner side of the inner ring portion 22, so that the air flow can better flow along the axial direction of the air duct body 1.

[0044] Moreover, the air duct structure 100 further comprises a heating element 4 arranged in the air duct body 1, the heating element 4 is arranged at the first side of the air guide 2, the heating element 4 forms a heating channel therein, and the inner ring portion 22 is coaxially arranged with the heating channel. As shown in Figure 2 Figure 2 The dotted arrow in represents the direction of the air flow, part of the air flow entering the air duct body 1 from the air inlet 11 directly enters the heating channel of the heating element 4, and the other part of the air flow flows out from the inner ring portion 22 after flowing through the circuit structure 3, so as to also flow into the heating channel. Moreover, the temperature of the air flow flowing through the circuit structure 3 will rise by a part under the action of the heat generation of the circuit structure 3, and then when the air flow is heated by the heating element 4, the heating efficiency can be effectively improved.

[0045] ​In addition, a plurality of abutting portions 231 are arranged on the connecting baffle 23, the plurality of abutting portions 231 are located in the air passing gap and abut against the circuit board 31, so as to ensure the spacing between the circuit board 31 and the connecting baffle 23, and meanwhile, the strength of the circuit board 31 can be improved.

[0046] Furthermore, a plurality of mounting portions are arranged on the inner side of the inner ring portion 22, a plurality of matching portions are arranged on the circuit board 31, and the plurality of mounting portions and the plurality of matching portions are arranged in one-to-one correspondence. The mounting portion can be a first mounting hole, the matching portion can be a second mounting hole, and the air duct structure 100 can further include a plurality of connecting members, such as screws, bolts or pins, which are arranged in one-to-one correspondence in the plurality of mounting portions and the plurality of matching portions, so as to connect and fix the circuit board 31 and the air guide member 2, ensure the reliable fixation of the circuit board 31, and improve the performance.

[0047] The utility model also provides a kind of blowing equipment 1000, combined Figure 1 And 2 As shown in the figure, the blowing equipment 1000 includes the above-mentioned air duct structure 100 and handle structure 200 connected with the air duct structure 100, wherein the handle structure 200 is arranged at the air inlet 11 of the air duct structure 100, a plurality of through holes 202 are arranged on the outer circumferential side of the handle structure 200, and a fan 201 can be arranged in the handle structure 200. The fan 201 is electrically connected with the circuit structure 3, and by working of the fan 201, external airflow can enter the handle structure 200 from the plurality of through holes 202 and flow towards the air inlet 11 through the air outlet end of the fan 201 to flow into the air duct main body 1.

[0048] Due to the connecting lead between the fan 201 and the circuit structure 3, the connecting baffle 23 of the air guide member 2 is arranged at the air inlet 11, so that the connecting lead can not pass through the air inlet 11, and the stability of the connecting lead can be avoided by airflow. Moreover, the airflow passes through the air passing hole 232 of the air guide member 2 to the circuit structure 3, and the circuit structure 3 is better cooled. Therefore, the blowing equipment 1000 not only has good working stability, but also has good cooling effect of the circuit structure 3, which can effectively improve the working time and save energy, and the hot air discharge is more efficient.

[0049] The above-mentioned is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or direct or indirect application in other related technical fields according to the content of the utility model specification and drawings is also included in the patent protection range of the utility model.

Claims

1. A duct structure, characterized by, The wind tube structure comprises: a wind tube body, the wind tube body being provided with an air inlet and an air outlet which are in communication; a wind guide member arranged in the wind tube body and having a first side and a second side which are oppositely arranged along the axial direction of the wind tube body, the air outlet being arranged close to the first side of the wind guide member; a circuit structure arranged at the second side of the wind guide member; wherein the airflow entering the wind tube body from the air inlet can flow from the first side to the second side of the wind guide member under the guidance of the wind guide member, and then flow towards the air outlet after passing through the circuit structure.

2. The duct structure of claim 1, wherein The wind guide member comprises an outer ring portion, an inner ring portion, and a connecting baffle connecting the outer ring portion and the inner ring portion, the outer ring portion being arranged around the outer periphery of the inner ring portion, the connecting baffle being provided with air passing holes, and the airflow entering the wind tube body from the air inlet can flow towards the circuit structure through the air passing holes.

3. The duct structure of claim 2, wherein The circuit structure comprises a circuit board and a plurality of components arranged on the circuit board, the circuit board being arranged close to the connecting baffle and at least part of the components being arranged on the inner side of the inner ring portion.

4. The duct structure of claim 3, wherein The circuit board and the air inlet are arranged in a staggered manner in the normal projection of the air inlet on a plane.

5. The duct structure of claim 2, wherein One side of the outer ring portion is provided with an air inlet gap which is in communication with at least part of the air inlet.

6. The duct structure of claim 3, wherein An air passing gap is formed between the connecting baffle and the circuit board, the outer ring portion is arranged in close contact with the inner side of the wind tube body, the airflow from the first side of the wind guide member enters the air passing gap through the air passing holes, and then flows towards the air outlet through the inner side of the inner ring portion.

7. The duct structure of claim 6, wherein A plurality of abutting portions are arranged in protrusion on the connecting baffle, the plurality of abutting portions are arranged in the air passing gap and abut against the circuit board; and / or The inner side of the inner ring portion is provided with a plurality of mounting portions, and the circuit board is provided with a plurality of matching portions, the plurality of mounting portions and the plurality of matching portions are arranged in one-to-one correspondence.

8. The duct structure of claim 2, wherein The wind tube structure further comprises a heating member arranged in the wind tube body, the heating member being arranged at the first side of the wind guide member, the heating member being provided with a heating channel, and the inner ring portion and the heating channel are coaxially arranged.

9. The duct structure of claim 2, wherein The air passing holes are provided in plurality, and the plurality of air passing holes are arranged in the region between the outer ring portion and the inner ring portion.

10. A blow-off apparatus characterized by comprising: The wind tube structure comprises the wind tube structure according to any one of claims 1 to 9.

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