Flow guide mechanism and fan

Abstract

The invention provides a flow guide mechanism which comprises a first flow guide layer, the first flow guide layer comprises a plurality of first flow guide blades, a first seat body and a first fixing ring, each first flow guide blade comprises a first starting end and a first ending end, and the first seat body comprises a framework seat body and an embedded seat body; the framework seat body comprises a plurality of first umbrella ribs and first groove bodies formed between any two adjacent first umbrella ribs, the first starting ends and the first umbrella ribs are integrally formed, the first groove bodies are suitable for being in sliding fit with the core pulling block in the mold stripping process, and the framework seat body is embedded with a plurality of second umbrella ribs of the seat body and second groove bodies formed between any two adjacent second umbrella ribs. The first umbrella rib is matched with the second groove body, and the second umbrella rib is matched with the first groove body; the first fixing ring is coaxially arranged on the periphery of the first seat body, and the first terminating end extends to the inner wall of the first fixing ring. The first groove body is arranged to be matched with the core pulling block, it is ensured that the mold can be smoothly demolded in the production process, and the inverted buckling problem is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of fans, and in particular relates to a flow guiding mechanism and a fan. Background Art

[0002] In small-sized portable fans, such as handheld fans, the guide mechanism is often constrained in structural design due to its small size. It usually adopts a relatively simple structure. The guide blade design is mostly a simple plane or fixed curvature shape. The central support seat of the guide blade is also mostly a straight cylinder structure, which has problems such as low airflow guidance efficiency, large wind pressure loss, and significant turbulence. The traditional straight-blade guide structure is often difficult to effectively guide the airflow to form a stable and efficient flow path, resulting in turbulent airflow, large energy loss, low wind speed and high noise. In order to improve the wind cutting efficiency of the guide blade, it is necessary to set its rotation angle to about 45°. The spiral guide blade is prone to form an undercut area during the mold forming process due to the existence of bending and corner enclosure. Especially when the corner is an acute angle, the space is narrower, and it is more difficult for the core pulling or demoulding mechanism to reach and act on this area, thereby increasing the difficulty of demoulding, increasing the difficulty and cost of production. Summary of the invention

[0003] In view of the above-mentioned defects of the prior art, an object of the present invention is to provide a flow guiding mechanism to meet the needs of users.

[0004] To achieve the above object, the present invention provides a flow guiding mechanism, comprising a first flow guiding layer, wherein the first flow guiding layer comprises

[0005] A plurality of first guide vanes, each comprising a first starting end and a first ending end,

[0006] The first seat body comprises a frame seat body and a chimeric seat body, wherein the frame seat body comprises a plurality of first ribs and a first groove body formed between any two adjacent first ribs, the first starting end is integrally formed with the first rib, the first groove body is suitable for slidingly cooperating with a core-pulling block during a demolding process, the chimeric seat body comprises a plurality of second ribs and a second groove body formed between any two adjacent second ribs, the first rib cooperates with the second groove body, and the second rib cooperates with the first groove body;

[0007] The first fixing ring is coaxially arranged on the periphery of the first seat body, and the first terminal end extends to the inner wall of the first fixing ring.

[0008] Preferably, the first starting end has a starting rotation angle of 30°-60° relative to the first seat body.

[0009] Preferably, the first rib includes a first straight edge and a first oblique edge, the adjacent first straight edge and the first oblique edge participate in forming the first slot body, and the first oblique edge is in sliding cooperation with the core-pulling block.

[0010] Preferably, the second rib includes a second straight edge and a second beveled edge, the first straight edge is matched with the second straight edge, the first beveled edge is matched with the second beveled edge, and the first straight edge and the second straight edge are slidably matched to guide the frame seat body to be plugged into the engaging seat body.

[0011] Preferably, the first groove body is a trapezoidal groove with two ends penetrating therethrough, the first straight side and the first oblique side are suitable for constituting two side edges thereof, and the angle between the first straight side and the first oblique side is 15° to 30°.

[0012] Preferably, the first guide vane includes a first pressure blade surface and a first suction blade surface, the first suction blade surface intersects with the first inclined surface and forms a connection angle, and the degree of the connection angle is 100°-130°.

[0013] Preferably, the first groove body is suitable for slidingly cooperating with the core pulling block during the demoulding process, and the first bevel is slidingly cooperating with the core pulling block.

[0014] As a preferred embodiment, the skeleton seat body and the embedded seat body are assembled to form a first guide cone, the first guide cone includes a first convergent end face and a first open end face, and the airflow flows from the first convergent end face to the first open end face.

[0015] As a preference, the first straight edge is arranged along the generatrix direction of the truncated cone structure.

[0016] As a preferred embodiment, a second air guide layer is further included, and the airflow flows from the first air guide layer to the second air guide layer, and the second air guide layer includes

[0017] A plurality of second guide vanes, each comprising a second starting end and a second ending end, wherein the first guide vanes and the second guide vanes are staggered;

[0018] A second seat body, which is coaxially arranged with the first seat body, and the second starting end extends to the second seat body;

[0019] A second fixing ring, the second terminating end extending to the second fixing ring.

[0020] As a preferred embodiment: the first guide blade is suitable for forming a spiral vortex structure centered on the first seat body, and the second guide blade is suitable for forming a spiral vortex structure centered on the second seat body. Compared with the traditional straight blade guide structure, the spiral blade can make the airflow pass through the guide mechanism more smoothly, reduce the turbulence of the airflow and the energy loss caused by the airflow, reduce the high-frequency noise caused by the turbulence of the airflow, and help maintain the high flow rate of the airflow. The number of the second guide blades is 1.5 times the number of the first guide blades. When the high-speed airflow passes through the guide mechanism, more second guide blades can make more detailed adjustments and guides to the airflow passing through the first guide layer, so that the speed and pressure distribution of the airflow are more uniform. Uniform airflow distribution reduces the fluctuation and pressure mutation of the airflow, which are also important causes of noise.

[0021] Preferably, the first open end face is arranged toward the second seat body, the first open end face has a first open end diameter, the second seat body is a cylindrical structure, the second seat body has a second diameter, and the first open end diameter is equal to the second diameter.

[0022] Preferably, the inner contour of the second fixing ring forms a truncated cone-shaped or trumpet-shaped second flow guiding passage, the second flow guiding passage comprises a second convergent port and a second open port, and the second open port is arranged toward the first fixing ring.

[0023] A fan comprising

[0024] The air duct is formed with an air cavity, an air inlet and an air outlet located at two axial ends of the air cavity,

[0025] a fan installed in the air cavity, the fan being adapted to drive the air flow from the air inlet to the air outlet,

[0026] As for the guide mechanism as described above, the first guide layer is arranged toward the fan, and part of the wind tube is suitable for forming the first fixed ring. The integrated design reduces the leakage and energy loss of the air flow between the guide mechanism and the wind tube.

[0027] As a preferred embodiment, the first convergent end surface is arranged toward the fan, and the second convergent port is suitable for constituting the air outlet.

[0028] Preferably, the second base body and the first open end face enclose an electromechanical cavity suitable for accommodating a control circuit board and / or a battery. The control circuit board is suitable for controlling the start and stop of the fan, and the battery is suitable for powering the fan. This not only makes rational use of the space, but also realizes the control and power supply functions of the fan, making the fan structure more compact.

[0029] Preferably, the skeleton base includes a central cylinder and the first ribs integrally formed around the central cylinder, the central cylinder includes a closed end surface to limit airflow from passing through, the central cylinder includes an open end surface for the fan to be installed on the closed end surface, and the mosaic base includes a mosaic ring and the second ribs integrally formed around the mosaic ring.

[0030] The beneficial effect of the present invention is that by setting the skeleton seat body and the chimeric seat body to form the first seat body, the first guide layer has both an efficient and smooth guide and wind cutting structure and overcomes the demoulding problem in the production process.

[0031] 1. The first trough body and the core-pulling block are arranged to cooperate and guide the mold to be demoulded smoothly during the production process, avoiding the problem of undercut, thereby improving production efficiency and product quality. In addition, the interlocking rib design improves the assembly coaxiality and forms a stable structure, which can suppress local turbulence caused by misalignment and reduce the noise caused by the vibration of the seat when the fan is running at high speed.

[0032] 2. The design of the first guide cone and the cone-shaped or trumpet-shaped second guide path within the second fixed ring gradually shrinks the space to accelerate the airflow, and helps guide the airflow to flow smoothly, reducing airflow disturbances and vortices, thereby reducing noise caused by airflow disturbances. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic structural diagram of the first guide layer structure provided by the present invention.

[0034] Figure 2 This is a schematic structural diagram of the first guide layer provided by the present invention from another angle.

[0035] Figure 3 This is a schematic structural diagram of the first guide layer (excluding the embedded base) provided by the present invention.

[0036] Figure 4 for Figure 3 A magnified schematic diagram of area A in the middle.

[0037] Figure 5 This is a schematic structural diagram of the interlocking base provided by the present invention.

[0038] Figure 6 This is a schematic structural diagram of the second guide layer structure provided by the present invention.

[0039] Figure 7 A schematic structural diagram of a fan provided by the present invention.

[0040] Figure 8A cross-sectional schematic diagram of a fan provided by the present invention.

[0041] In the figure: 100, first guide layer; 110, first guide blade; 111, first starting end; 112, first ending end; 113, first pressure blade surface; 114, first suction blade surface; 121, skeleton seat; 1211, central cylinder; 1212, first rib; 1213, first slot; 1214, first straight edge; 1215, first hypotenuse; 122, embedded seat; 1221, embedded ring; 1222, second rib; 1223, second slot; 1224, second straight edge; 1225, second hypotenuse ; 123, first guide cone; 1231, first convergent end face; 1232, first open end face; 130, first fixed ring; 200, second guide layer; 210, second guide blade; 211, second starting end; 212, second ending end; 220, second seat; 230, second fixed ring; 231, second convergent port; 232, second open port; 301, wind cylinder; 311, wind cavity; 312, air inlet; 302, fan; 303, control circuit board; 304, battery; 305, electromechanical cavity. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown in the drawings, while other details that are not closely related to the present invention are omitted.

[0044] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0045] Example 1

[0046] like Figure 1-8The present invention discloses a flow guide mechanism, comprising a first flow guide layer 100. The first flow guide layer 100 comprises a plurality of first flow guide blades 110, a first seat body and a first fixing ring 130, wherein the first fixing ring 130 is coaxially arranged at the periphery of the first seat body, and the first flow guide blade 110 comprises a first starting end 111 extending to the first seat body and a first terminating end 112 extending to the first fixing ring 130. The first seat body includes a skeleton seat body 121 and a mosaic seat body 122, the skeleton seat body 121 includes a plurality of first ribs 1212 and a first groove body 1213 formed between any two adjacent first ribs 1212, the first starting end 111 and the first ribs 1212 are integrally formed, the first groove body 1213 is suitable for slidingly cooperating with the core pulling block during the demolding process, the mosaic seat body 122 includes a plurality of second ribs 1222 and a second groove body 1223 formed between any two adjacent second ribs 1222, the first rib 1212 cooperates with the second groove body 1223, and the second rib 1222 cooperates with the first groove body 1213.

[0047] In this embodiment, the first rib 1212 includes a first straight edge 1214 and a first bevel 1215. The adjacent first straight edge 1214 and the first bevel 1215 participate in forming the first slot body 1213. The first slot body 1213 is a trapezoidal slot with two ends through. The first straight edge 1214 and the first bevel 1215 are suitable for forming its two side edges. The angle between the first straight edge 1214 and the first bevel 1215 is 20°. The first guide vane 110 includes a first pressure blade surface 113 and a first suction blade surface 114. The first suction blade surface 114 intersects with the first bevel and forms a connection angle. The degree of the connection angle is 120°. The first bevel 1215 is slidably matched with the core-pulling block. The second rib 1222 includes a second straight edge 1224 and a second beveled edge 1225 , the first straight edge 1214 matches with the second straight edge 1224 , the first beveled edge 1215 matches with the second beveled edge 1225 , and the first straight edge 1214 and the second straight edge 1224 are slidably matched to guide the frame seat 121 and the engaging seat 122 to be plugged in.

[0048] In this embodiment, the skeleton base 121 and the embedded base 122 are assembled to form a first guide cone 123, which includes a first convergent end face 1231 and a first open end face 1232, and the airflow flows from the first convergent end face 1231 to the first open end face 1232. The first straight edge 1214 is arranged along the generatrix direction of the cone structure.

[0049] In this embodiment, the skeleton base 121 includes a central cylinder 1211 and a first rib 1212 integrally formed around the central cylinder 1211, the central cylinder 1211 includes a closed end surface to limit the outflow of air, the central cylinder 1211 includes an open end surface for the fan 302 to be installed on the closed end surface, and the mosaic base 122 includes a mosaic ring 1221 and a second rib 1222 integrally formed around the mosaic ring 1221.

[0050] The mold core pulling structure required for producing the first guide layer 100 includes a mold body, a core pulling block and a driving mechanism. The mold body has a cavity for molding a skeleton seat body 121 and an integrally molded first guide blade 110 and a wind tube 301. The core pulling block is arranged in the cavity, corresponding to the first slot body 1213, and the shape and size of the core pulling block match the first slot body 1213. The driving mechanism is connected to the core pulling block, and is used to drive the core pulling block to move in the cavity to realize core pulling and demolding. In actual production, the mold body is first closed, and then the raw materials are injected into the cavity to mold the skeleton seat body 121 and related components. After the product is formed, the core pulling block is driven by the driving mechanism to move along the oblique groove direction of the first slot body 1213, and the core pulling block is pulled out of the first slot body 1213, and then the mold is opened and taken out.

[0051] Specifically, the driving mechanism includes an oil cylinder, which drives the core pulling block to move along the inclined groove direction of the first groove body 1213 by hydraulic pressure to realize the core pulling action. A guide device is also provided on the mold body. The guide device is a linear guide rail, which is used to guide the movement of the core pulling block to ensure that the core pulling block will not deviate or shake during the movement, thereby improving the accuracy and stability of the core pulling.

[0052] In this embodiment, the guide mechanism further includes a second guide layer 200, the airflow flows from the first guide layer 100 to the second guide layer 200, the second guide layer 200 includes a plurality of second guide blades 210, a second seat body 220 and a second fixing ring 230, the second seat body 220 is coaxially arranged on the front side of the first seat body, the second fixing ring 230 is coaxially arranged on the outer side of the second seat body 220, and the second guide blade 210 includes a second starting end 211 extending to the second seat body 220 and a second terminating end 212 extending to the second fixing ring 230. The first guide blade 110 and the second guide blade 210 are staggered.

[0053] In this embodiment, the first open end face 1232 is arranged toward the second seat body 220, and the first open end face 1232 has a first open end diameter. The second seat body 220 is a cylindrical structure, and the second seat body 220 has a second diameter, and the first open end diameter is equal to the second diameter. The inner contour of the second fixed ring 230 forms a truncated cone-shaped second flow guide passage, and the second flow guide passage includes a second convergence port 231 and a second open port 232, and the second open port 232 is arranged toward the first fixed ring 130. The first guide vane 110 is suitable for forming a spiral vortex structure centered on the first seat body, and the second guide vane 210 is suitable for forming a spiral vortex structure centered on the second seat body 220. Compared with the traditional straight blade type guide structure, the spiral vane can make the airflow pass through the guide mechanism more smoothly, reduce the turbulence of the airflow and the energy loss caused by the airflow, reduce the high-frequency noise caused by the turbulence of the airflow, and help maintain a high flow rate of the airflow. The number of the second guide blades 210 is 1.5 times the number of the first guide blades 110. When the high-speed airflow passes through the guide mechanism, more second guide blades 210 can make more detailed adjustments and guides to the airflow passing through the first guide layer 100, so that the speed and pressure distribution of the airflow are more uniform. The uniform airflow distribution reduces the fluctuation and pressure mutation of the airflow, which are also important causes of noise.

[0054] Example 2

[0055] like Figure 7-8 A fan comprises a wind tube 301, a fan 302 and the guide mechanism in Example 1. The wind tube 301 is formed with a wind cavity 311, an air inlet 312 and an air outlet located at both axial ends of the wind cavity 311. The fan 302 is installed in the wind cavity 311, and the fan 302 is suitable for driving the airflow from the air inlet 312 to the air outlet. The first guide layer 100 is arranged toward the fan 302, and part of the wind tube 301 is suitable for forming the first fixing ring 130. The integrated design reduces the leakage and energy loss of the airflow between the guide mechanism and the wind tube 301. The first convergence end surface 1231 is arranged toward the fan 302, and the second convergence port 231 is suitable for forming the air outlet.

[0056] In this embodiment, the second base body 220 and the first open end surface 1232 are enclosed to form an electromechanical cavity 305 suitable for accommodating a control circuit board 303 and / or a battery 304. The control circuit board 303 is suitable for controlling the start and stop of the fan 302, and the battery 304 is suitable for supplying power to the fan 302. This not only makes rational use of the space, but also realizes the control and power supply functions of the fan 302, making the fan structure more compact.

[0057] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A flow guiding mechanism, characterized in that: Including the first guide layer, The first guide layer comprises A plurality of first guide vanes, each comprising a first starting end and a first ending end, A first seat body, comprising a frame seat body and a chimeric seat body, wherein the frame seat body comprises a plurality of first ribs and a first slot body formed between any two adjacent first ribs, the first starting end is integrally formed with the first rib, the chimeric seat body comprises a plurality of second ribs and a second slot body formed between any two adjacent second ribs, the first rib cooperates with the second slot body, and the second rib cooperates with the first slot body; The first fixing ring is coaxially arranged on the periphery of the first seat body, and the first terminal end extends to the inner wall of the first fixing ring.

2. A flow guiding mechanism according to claim 1, characterized in that: The first rib includes a first straight edge and a first beveled edge, and the adjacent first straight edge and the first beveled edge participate in forming the first slot body. The second rib includes a second straight edge and a second beveled edge, and the first straight edge is adapted to the second straight edge, and the first beveled edge is adapted to the second beveled edge. The sliding fit between the first straight edge and the second straight edge is suitable for guiding the frame seat body to be plugged into the chimeric seat body.

3. A flow guiding mechanism according to claim 2, characterized in that: The first slot body is a trapezoidal slot with two ends penetrating therethrough, the first straight side and the first oblique side are suitable for constituting two side edges thereof, and the angle between the first straight side and the first oblique side is 15° to 30°.

4. A flow guiding mechanism according to claim 3, characterized in that: The first guide vane includes a first pressure blade surface and a first suction blade surface. The first suction blade surface intersects with the first inclined surface and forms a connection angle. The degree of the connection angle is 100°-130°.

5. A flow guiding mechanism according to claim 2, characterized in that: The first groove body is suitable for slidingly cooperating with the core pulling block during the demoulding process, and the first bevel is slidingly cooperating with the core pulling block.

6. A flow guiding mechanism according to claims 1-5, characterized in that: The skeleton seat body and the embedded seat body are assembled to form a first guide cone, and the first guide cone includes a first convergent end surface and a first open end surface, and the airflow flows from the first convergent end surface to the first open end surface.

7. A flow guiding mechanism according to claim 6, characterized in that: It also includes a second guide layer, the airflow flows from the first guide layer to the second guide layer, the second guide layer includes a plurality of second guide blades, which include a second starting end and a second ending end, the first guide blades and the second guide blades are staggered, the first guide blades are suitable for forming a spiral vortex structure centered on the first seat body, the second guide blades are suitable for forming a spiral vortex structure centered on the second seat body, and the number of the second guide blades is 1.5 times the number of the first guide blades; A second seat body, which is coaxially arranged with the first seat body, and the second starting end extends to the second seat body; A second fixing ring, the second terminating end extending to the second fixing ring.

8. A flow guiding mechanism according to claim 7, characterized in that: The first open end surface is arranged toward the second seat body, the first open end surface has a first open end diameter, the second seat body is a cylindrical structure, the second seat body has a second diameter, and the first open end diameter is equal to the second diameter; And / or, the inner contour of the second fixing ring forms a truncated cone-shaped or trumpet-shaped second flow guiding passage, the second flow guiding passage includes a second convergent port and a second open port, and the second open port is arranged toward the first fixing ring.

9. A fan, characterized in that: include The air duct is formed with an air cavity, an air inlet and an air outlet located at two axial ends of the air cavity, a fan installed in the air cavity, the fan being adapted to drive the air flow from the air inlet to the air outlet, According to the guide mechanism as described in claims 6-8, the first guide layer is arranged toward the fan, and a part of the wind tube is suitable for forming the first fixing ring.

10. A flow guiding mechanism according to claim 9, characterized in that: The second base body and the first open end face enclose an electromechanical cavity suitable for accommodating a control circuit board and / or a battery. The control circuit board is suitable for controlling the start and stop of the fan, and the battery is suitable for supplying power to the fan.

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