Air duct structure and circulating fan

Abstract

The embodiment of the utility model provides an air duct structure and a circulating fan, and relates to the field of household appliances. Comprising an air inlet ring, a front net and an outer cover, an air inlet is formed in one end of the air inlet ring, an air outlet is formed in the other end of the air inlet ring, and the air inlet and the air outlet are gradually shrunk in the air direction; an air guide ring is arranged at the end, close to the air outlet, of the front net and connected with the air outlet. An air outlet cover is arranged at one end of the front net away from the air outlet; the outer cover is composed of an installation ring and an air filtering ring which are integrally connected, and the air inlet ring and the front net are detachably connected into the installation ring. The air inlet ring is arranged close to the air filtering ring, and the end edge of the air inlet is attached to the inner wall of the air filtering ring; and air filtering structures are arranged on the side wall of the air filtering ring and one end far away from the air inlet ring. The air inlet can be more concentrated and smoother, the air outlet amount is increased, the circulating effect of the circulating fan is enhanced, air is prevented from entering the space between the outer cover and the air guide ring and the space between the outer cover and the air inlet ring, the air outlet stability is improved, and noise is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of household appliances, in particular to a wind channel structure and circulation fan. BACKGROUND

[0002] The circulation fan mainly functions is to form the indoor air circulation, with reasonable air flow direction reaches the effect of balanced temperature.

[0003] The traditional circulation fan wind channel structure air intake is uneven, not concentrated, leading to the air output is less, the overall air circulation effect is poor, the air flow is disorderly in the air intake process, influence air outlet stability, still can produce bigger noise, influence user experience. UTILITY MODEL CONTENTS

[0004] In view of above -mentioned problem, proposed the utility model embodiment in order to provide a kind of wind channel structure and circulation fan to overcome above-mentioned problem or at least partially solve above-mentioned problem.

[0005] A kind of wind channel structure, including air intake ring, front net and outer cover, one end of the air intake ring is equipped with air intake, the other end of the air intake ring is equipped with air outlet, the air intake to the air outlet is tapered along wind direction;

[0006] The end of the front net close to the air outlet is equipped with air guide ring, the air guide ring is connected with the air outlet;The end of the front net away from the air outlet is equipped with air outlet cover;

[0007] The outer cover is composed of mounting ring and filter ring connected integrally, the air intake ring and the front net are detachably connected in the inside of the mounting ring;The air intake ring is close to the filter ring, and the end edge of the air intake is attached to the inner wall of the filter ring;The sidewall of the filter ring and the end away from the air intake ring are provided with filter structure.

[0008] Preferably, the air intake is arc-shaped and has a horn shape.

[0009] Preferably, the air outlet to the air guide ring is tapered along the wind direction;The filter ring to the mounting ring is gradually expanded along the wind direction.

[0010] Preferably, the end of the air intake close to the filter ring is provided with a fitting part extending outward and perpendicular to the center line of the air duct;

[0011] The inner wall thickness of the filter ring is greater than the inner wall thickness of the mounting ring, to form a step portion at the connection of the mounting ring;The step portion is attached to the fitting part.

[0012] Preferably, the fitting part is provided with screw through holes along the axial direction of the air duct at intervals along the circumferential direction;The step portion is provided with screw columns matched with the plurality of screw through holes.

[0013] Preferably, the outer wall of the air outlet is circumferentially provided with a plurality of reinforcing ribs, one end of the reinforcing ribs is connected with the outer wall of the air inlet, and the other end of the reinforcing ribs extends to the outside of the air guide ring.

[0014] Preferably, the air filtering structure comprises a plurality of air filtering holes formed in the air filtering ring, and the air filtering holes are strip-shaped holes.

[0015] Preferably, the air outlet cover is trumpet-shaped, and the inner diameter of the air outlet cover is provided with a cyclone vane.

[0016] Preferably, the air outlet cover is provided with a buckling structure, the inner wall of the mounting ring is provided with a buckling position, the buckling structure is rotationally buckled with the buckling position, and a screw hole that sequentially penetrates through is formed in the buckling structure and the buckling position.

[0017] A circulating fan comprises the air duct structure, a fan blade and a driving member for driving the fan blade to rotate, and the fan blade and the driving member are mounted inside the outer cover.

[0018] The application specifically comprises the following advantages:

[0019] In the embodiment of the application, the air inlet ring is connected with the front net inside the outer cover to form an air duct, the side wall of the air inlet to the side wall of the air outlet is tapered along the air direction, the air inlet direction can be changed, the air is filtered by the air filtering structure on the side wall and the end of the outer cover, and the air inlet is more concentrated and smooth; the air outlet is connected with the air guide ring, which can prevent the air from entering the space between the outer cover and the front net, thereby improving the air outlet stability and reducing the noise; the air inlet ring and the front net are detachably connected inside the mounting ring, which can be disassembled for cleaning and replacement, thereby ensuring the air outlet volume and stability of the circulating fan; the air inlet ring is arranged close to the air filtering ring, and the end edge of the air inlet is attached to the inner wall of the air filtering ring, which can prevent the air from entering the space between the air inlet ring and the outer cover, thereby avoiding affecting the air inlet stability, concentration and uniformity. The application can make the air inlet more concentrated and smooth, increase the air outlet volume, enhance the circulating effect of the circulating fan, and avoid the air entering the space between the outer cover and the air guide ring and the air inlet ring, thereby improving the air outlet stability and reducing the noise. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the application, the following will briefly introduce the drawings needed to be used in the description of the application. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creating labor intensity.

[0021] Fig. 1 is an explosion structure schematic view of the air duct structure of the utility model;

[0022] Fig. 2 is the schematic diagram of the circulation fan and the wind direction of the utility model;

[0023] Reference signs: 1, air inlet ring; 11, air inlet; 111, fitting part; 112, screw through hole; 12, air outlet; 121, reinforcing fin; 2, front net; 21, air guide ring; 22, air outlet cover; 221, cyclone blade; 222, buckling structure; 3, outer cover; 31, mounting ring; 311, buckling position; 312, screw hole; 32, filter ring; 321, step part; 322, screw column; 33, filter structure; 331, filter hole; 4, fan blade; 5, driving part. DETAILED DESCRIPTION

[0024] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below in combination with the drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0025] Referring to Figs. 1-2 , a structure schematic view of the air duct structure of the utility model is shown, which can specifically include an air inlet ring 1, a front net 2 and an outer cover 3, one end of the air inlet ring 1 is provided with an air inlet 11, the other end of the air inlet ring 1 is provided with an air outlet 12, the air inlet 11 to the air outlet 12 is tapered along the wind direction;

[0026] One end of the front net 2 close to the air outlet 12 is provided with an air guide ring 21, and the air guide ring 21 is connected with the air outlet 12; one end of the front net 2 away from the air outlet 12 is provided with an air outlet cover 22;

[0027] The outer cover 3 is composed of a mounting ring 31 and a filter ring 32 connected integrally, the air inlet ring 1 and the front net 2 are detachably connected inside the mounting ring 31; the air inlet ring 1 is arranged close to the filter ring 32, and the end edge of the air inlet 11 is fitted with the inner wall of the filter ring 32; the sidewall of the filter ring 32 and the end away from the air inlet ring 1 are provided with a filter structure 33.

[0028] In the embodiment of the present application, the air inlet ring 1 and the front net 2 are connected inside the outer cover 3 to form an air duct, the side wall of the air inlet 11 of the air inlet ring 1 to the side wall of the air outlet 12 is tapered along the wind direction, which can change the air inlet direction, make the air filtered by the filter structure 33 of the side wall and the end of the outer cover 3, and the air inlet is more concentrated and smooth; the air outlet 12 is connected with the air guide ring 21, which can prevent the air from entering the space between the outer cover 3 and the front net 2, thereby improving the air outlet stability and reducing the noise; the air inlet ring 1 and the front net 2 are detachably connected inside the mounting ring 31, which can be disassembled for cleaning and replacement, ensuring the air outlet volume and stability of the circulating fan; the air inlet ring 1 is arranged close to the filter ring 32, and the end edge of the air inlet 11 is attached to the inner wall of the filter ring 32, which can prevent the air from entering the space between the air inlet ring 1 and the outer cover 3, thereby avoiding affecting the air inlet stability, concentration and uniformity. The present application can make the air inlet more concentrated and smooth, increase the air outlet volume, enhance the circulating effect of the circulating fan, and avoid the air entering the space between the outer cover 3 and the air guide ring 21 and the air inlet ring 1, improve the air outlet stability, and reduce the noise.

[0029] In the following, a further description will be given to the air duct structure in the present exemplary embodiment.

[0030] In the embodiment of the present application, referring to Fig. 1 The air inlet ring 1 and the front net 2 are arranged inside the outer cover 3, one end of the air inlet ring 1 is provided with an air inlet 11, the other end of the air inlet ring 1 is provided with an air outlet 12, the air inlet 11 to the air outlet 12 is tapered along the wind direction, that is, the air inlet 11 has a larger diameter at one end, and the air outlet 12 has a smaller diameter at one end, which can change the air inlet direction, make the air inlet more concentrated, thereby increasing the air outlet volume and enhancing the circulating effect of the circulating fan, and the gradually reduced shape can make the air inlet more smooth.

[0031] One end of the front net 2 close to the air outlet 12 is provided with an air guide ring 21, the air guide ring 21 is connected with the air outlet 12, and the air inlet 11 and the air outlet 12 together form a smooth air duct, which plays a role in guiding the air; at the same time, no gap is left between the air guide ring 21 and the air outlet 12, which can prevent the air from entering the space between the outer cover 3 and the air guide ring 21 and the air outlet 12, causing unstable air outlet and noise; at the same time, the design of the air guide ring 21 can also strengthen the structural strength of the front net 2. One end of the front net 2 away from the air outlet 12 is provided with an air outlet cover 22, which is used to stabilize the air outlet.

[0032] The outer cover 3 is composed of a mounting ring 31 and a filter ring 32 connected integrally, and the air inlet ring 1 and the front net 2 are detachably connected inside the mounting ring 31, so that the air inlet ring 1 and the front net 2 can be detached from the mounting ring 31 for cleaning or replacement, thereby ensuring the air outlet effect and stability. The air inlet ring 1 is arranged close to the filter ring 32, and the end edge of the air inlet 11 is attached to the inner wall of the filter ring 32, so that there is no gap at the connection between the filter ring 32 and the air inlet 11, avoiding the wind entering the space between the outer cover 3 and the side wall of the air inlet 11 when the air inlet is unstable and causing noise. The side wall of the filter ring 32 and the end away from the air inlet ring 1 are provided with a filter structure 33, so that the wind can pass through the filter structure 33 after being filtered from the side wall and the end of the filter ring 32, and then enter the air duct from the air inlet 11, making the air inlet more concentrated.

[0033] As an example, the air inlet 11 is in the shape of an arc-shaped horn, and the arc-shaped structure design makes the air inlet more smooth and unobstructed, thereby improving the stability of the air inlet.

[0034] As an example, the air outlet 12 to the air guide ring 21 is tapered along the wind direction; that is, the air inlet 11 to the air outlet 12 to the air guide ring 21 is tapered along the wind direction as a whole, forming a smooth transition air duct structure, which can further improve the stability and smoothness of the air outlet. The filter ring 32 to the mounting ring 31 is gradually expanded along the wind direction, which is convenient for installing the horn-shaped air outlet cover 22.

[0035] As an example, the air outlet cover 22 is in the shape of a horn, and the horn-shaped air outlet cover 22 can expand the air outlet area, making the air outlet coverage wider. The inner diameter of the air outlet cover 22 is provided with a cyclone vane 221 for cyclone air outlet.

[0036] As an example, the air inlet 11 is provided with a fitting part 111 extending outward and perpendicular to the center line of the air duct at one end close to the filter ring 32; the inner wall thickness of the filter ring 32 is greater than that of the mounting ring 31, so as to form a step part 321 at the connection with the mounting ring 31, and the step part 321 is attached to the fitting part 111, so as to tightly attach the filter ring 32 to the air inlet 11, preventing the air inlet from entering the connection, thereby affecting the stability of the air inlet and causing noise, and further improving the stability of the air inlet.

[0037] As an example, the fitting part 111 is provided with a screw through hole 112 along the axial direction of the air duct at intervals along the circumference thereof; the step part 321 is provided with a screw column 322 matched with the plurality of screw through holes 112. After the air inlet ring 1 is inserted into the mounting ring 31, the screw through hole 112 is sleeved outside the screw column 322, and then the screw is screwed in to fix it. When disassembling, the screw is loosened to take out the air inlet ring 1 from the mounting ring 31, which is convenient and fast.

[0038] As an example, the air outlet cover 22 is provided with a buckling structure 222, the inner wall of the mounting ring 31 is provided with a buckling position 311, the buckling structure 222 is rotationally buckled with the buckling position 311, and screw holes 312 are sequentially and through formed in the buckling structure 222 and the buckling position 311. When the front net 2 is installed, the front net 2 is inserted into the outer cover 3, the buckling structure 222 is rotated into the buckling position 311 of the outer cover 3, and then the screw is screwed into the screw hole 312, so that the front net 2 and the outer cover 3 are stably connected, the falling caused by the wind force is avoided, the air outlet stability can be ensured, and the noise is reduced.

[0039] As an example, the outer wall of the air outlet 12 is circumferentially provided with a plurality of reinforcing ribs 121, one end of the reinforcing rib 121 is connected with the outer wall of the air inlet 11, and the reinforcing rib 121 forms an integrated reinforcing structure with the air inlet 11; the other end of the reinforcing rib 121 extends to the outer side of the air guide ring 21, and after the air outlet 12 is connected with the air guide ring 21, the reinforcing rib 121 can simultaneously reinforce and stabilize the outer side of the air guide ring 21, improve the stability of air inlet and air outlet, and reduce noise.

[0040] As an example, the air filter structure 33 includes a plurality of air filter holes 331 formed in the air filter ring 32, the air filter hole 331 is a strip-shaped hole, and the outer side wall and the rear end of the air filter ring 32 are provided with a plurality of strip-shaped holes arranged at intervals, so that large impurities can be filtered, air can be introduced, air can be introduced from the end and the circumference, and air inlet is more concentrated.

[0041] With reference to Fig. 2 The embodiment of the present application also provides a circulating fan, which comprises the air duct structure, the fan blade 4 and the driving member 5 for driving the fan blade 4 to rotate, and the fan blade 4 and the driving member 5 are installed in the outer cover 3.

[0042] The air duct structure and the circulating fan are designed, the air inlet direction is changed, the air inlet is more concentrated and smooth, the air outlet amount is increased, the circulating effect of the circulating fan is enhanced, the air is prevented from entering the space between the front net 2 and the air guide ring 21 and the middle ring, the air outlet stability is improved, and the noise is reduced.

[0043] Although the preferred embodiments of the present application have been described, those skilled in the art can make other changes and modifications to the embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present application.

[0044] Finally, it needs to be explained that in this document, the relational terms such as first and second and the like can merely be used to differentiate one entity or action from another, without necessarily requiring or implying any actual relationship or order between or among the entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0045] The above provides a kind of air duct structure and circulating fan provided by the utility model, has carried out detailed introduction, the principle and implementation mode of the utility model are described in this document by applying specific example, the above embodiment is only for helping to understand the method of the utility model and its core idea;Meanwhile, for the general technical personnel of the field, according to the thought of the utility model, there will be changes in specific implementation mode and application range, as described above, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A duct structure, characterized in that, It includes an air inlet ring, a front grille, and an outer cover. One end of the air inlet ring is provided with an air inlet, and the other end of the air inlet ring is provided with an air outlet. The air inlet and the air outlet gradually taper along the wind direction. The front mesh is provided with an air guide ring at one end near the air outlet, and the air guide ring is connected to the air outlet; the front mesh is provided with an air outlet cover at the other end away from the air outlet. The outer cover is composed of an integrally connected mounting ring and a filter ring. The air inlet ring and the front mesh are detachably connected inside the mounting ring. The air inlet ring is located close to the filter ring, and the end edge of the air inlet is in contact with the inner wall of the filter ring. The side wall of the filter ring and the end away from the air inlet ring are provided with a filter structure.

2. The air duct structure according to claim 1, characterized in that, The air inlet is in the shape of an arc-shaped trumpet.

3. The air duct structure according to claim 1 or 2, characterized in that, The air outlet to the air guide ring gradually narrows along the wind direction; the filter ring to the mounting ring gradually expands along the wind direction.

4. The air duct structure according to claim 1, characterized in that, The air inlet is provided with an outwardly extending fitting portion that is perpendicular to the center line of the air duct at one end near the filter ring; The inner wall thickness of the filter ring is greater than the inner wall thickness of the mounting ring, so as to form a stepped portion at the connection with the mounting ring; the stepped portion is in contact with the fitting portion.

5. The air duct structure according to claim 4, characterized in that, The fitting portion is provided with screw through holes spaced apart along the circumference and along the axial direction of the air duct; the stepped portion is provided with screw posts that are adapted to each of the screw through holes.

6. The air duct structure according to claim 1, characterized in that, The outer wall of the air outlet is provided with a plurality of reinforcing ribs in the circumferential direction. One end of the reinforcing ribs is connected to the outer wall of the air inlet, and the other end of the reinforcing ribs extends to the outside of the air guide ring.

7. The air duct structure according to claim 1, characterized in that, The air filtration structure includes a plurality of air filtration holes formed in the air filtration ring, and the air filtration holes are strip-shaped holes.

8. The air duct structure according to claim 1, characterized in that, The air outlet shroud is trumpet-shaped, and the inner diameter of the air outlet shroud is provided with swirl blades.

9. The air duct structure according to claim 1, characterized in that, The air outlet cover is provided with a fastening structure, and the inner wall of the mounting ring is provided with a fastening position. The fastening structure and the fastening position are rotated and fastened together. Both the fastening structure and the fastening position are provided with screw holes that pass through in sequence.

10. A circulating fan, characterized in that, It includes the air duct structure as described in any one of claims 1-9, as well as fan blades and a drive member for driving the fan blades to rotate, the fan blades and the drive member being mounted inside the outer casing.

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