WO2021147497A1 - Flow guide device, fan assembly, and electric appliance - Google Patents

Flow guide device, fan assembly, and electric appliance Download PDF

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Publication number
WO2021147497A1
WO2021147497A1 PCT/CN2020/130044 CN2020130044W WO2021147497A1 WO 2021147497 A1 WO2021147497 A1 WO 2021147497A1 CN 2020130044 W CN2020130044 W CN 2020130044W WO 2021147497 A1 WO2021147497 A1 WO 2021147497A1
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WIPO (PCT)
Prior art keywords
fan
deflector
cross
guide portion
sectional profile
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PCT/CN2020/130044
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French (fr)
Chinese (zh)
Inventor
刘华
马屈杨
池晓龙
苏玉海
张碧瑶
夏凯
Original Assignee
珠海格力电器股份有限公司
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Publication of WO2021147497A1 publication Critical patent/WO2021147497A1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/403Casings; Connections of working fluid especially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/26Rotors specially for elastic fluids

Definitions

  • the present disclosure relates to the technical field of electrical appliances, in particular to a deflector, a fan assembly and an electrical appliance.
  • fans and deflectors are generally provided.
  • the deflectors are arranged at the air inlet of the fan to guide the airflow entering the fan to optimize the air intake conditions of the fan.
  • the first aspect of the present disclosure provides a flow deflector, which includes:
  • the first guiding part has a guiding cavity, the guiding cavity has an axis and an inlet and an outlet located at both ends of the first guiding part along the axis;
  • the second guide portion is connected to the outer edge of the inlet and extends along the direction from the inlet to the outlet, so that the first guide portion and the second guide portion are connected to form a flanged portion;
  • the cross-sectional profile of the flanging portion is curved, and the cross-section is a cross-section cut along the plane where the axis is located.
  • the cross-sectional profile of the first air guiding part and/or the second air guiding part is arc-shaped, parabolic or saddle-shaped.
  • the cross-sectional profile of the first diversion portion and/or the cross-sectional profile of the second diversion portion is arc-shaped with a radius of r, and the outlet diameter of the first diversion portion is D, r and D The relationship between them is 10 ⁇ D/2r ⁇ 16.67; or, the cross-sectional profile of the first diversion portion and/or the cross-sectional profile of the second diversion portion has a first axial length of 2a and a second axial length of b
  • the first axis and the second axis are one and the other of the long axis and the short axis respectively, and the relationship between a and b is 0.15 ⁇ a/b ⁇ 2.
  • the relationship between a and b is 0.15 ⁇ a/b ⁇ 0.95 or 1.05 ⁇ a/b ⁇ 2.
  • the cross-sectional profile line of the first air guiding part and the cross-sectional profile line of the second air guiding part are symmetrical or asymmetric with respect to the reference line, and the reference line is connected through the first air guiding part and the second air guiding part.
  • the cross-sectional profile of the flanging portion has a circular arc shape, an elliptical arc shape, a parabola shape, or a saddle shape.
  • the cross-sectional profile of the flanging portion is in the shape of an arc, and the arc length of the flanging portion is greater than or equal to 0.25 times the entire circumference of the equal radius, and less than or equal to 0.5 times the entire circumference of the equal radius; or ,
  • the cross-sectional profile of the flanging part is an elliptical arc, and the arc length of the flanging part is greater than or equal to 0.25 times of the circumference of the ellipse of the same specification, and less than or equal to 0.5 times of the circumference of the ellipse of the same specification.
  • a second aspect of the present disclosure provides a fan assembly, which includes a fan and the deflector of the present disclosure, and the deflector is arranged at the inlet of the fan.
  • the outlet of the first air guide is inserted into the air inlet of the fan.
  • the fan is a mixed flow fan, an axial flow fan, or a centrifugal fan.
  • the fan is a mixed flow fan, wherein the fan includes 6-20 moving blades; and/or, the fan includes 6-25 stationary blades.
  • the fan includes 15 stationary blades.
  • a third aspect of the present disclosure provides an electrical appliance, which includes the fan assembly of the present disclosure.
  • the electrical appliance is an air conditioner or a range hood.
  • a flanging portion with a curved cross-section profile is arranged at the inlet of the deflector, which can achieve a better diversion effect, is beneficial to improve the air intake condition of the fan, and enhance the performance of the fan.
  • Fig. 1 shows a schematic structural diagram of a fan assembly in some embodiments of the present disclosure.
  • Fig. 2 shows a longitudinal section view of Fig. 1.
  • Fig. 3 shows a longitudinal section view of the deflector in Fig. 2.
  • Fig. 4 shows a longitudinal sectional view of the deflector in other embodiments of the present disclosure.
  • Fig. 5 shows a longitudinal sectional view of the deflector in still other embodiments of the present disclosure.
  • Fig. 6 shows a longitudinal sectional view of the deflector in still other embodiments of the present disclosure.
  • Fig. 7 shows a schematic diagram of a simulation of a deflector without a second deflector.
  • Fig. 8 shows a schematic diagram of a simulation of a deflector with a semi-circular arc-shaped flanging portion.
  • orientation words “upper” and “lower” are defined based on the flow direction of the airflow, the inflow direction is “upper”, and the outflow direction is “lower”.
  • Figures 1-6 show the structural schematic diagrams of the fan assembly and its deflector of the present disclosure.
  • the fan assembly is used in electrical appliances such as air conditioners or range hoods, and includes a fan 2 and a deflector 1.
  • the deflector 1 is arranged at the air inlet of the fan 2 and is used to guide the airflow entering the fan 2.
  • the fan 2 is an axial fan, a centrifugal fan, or a hybrid fan.
  • the following only takes the fan 2 as a mixed flow fan as an example for description.
  • the mixed flow fan is a fan between the axial flow fan and the centrifugal fan, which makes the air do both centrifugal movement and axial movement. Because the movement of the air in the mixed flow fan is a mixture of axial flow and centrifugal movement, it is called "mixed flow”.
  • the mixed flow fan combines the characteristics of the axial flow fan and the centrifugal fan. It not only has a wind pressure coefficient higher than that of an axial flow fan, but also has a flow coefficient larger than that of a centrifugal fan, and has the characteristics of simple and convenient installation.
  • the mixed flow fan used in air conditioners or range hoods can better meet the air volume and pressure head indicators, and achieve a more ideal high wind-to-noise ratio.
  • the pressure head refers to the energy per unit weight of the fluid.
  • Wind-to-noise ratio refers to the ratio of air volume to noise.
  • Figure 2 shows a structural form when the fan 2 is a mixed flow fan.
  • the fan 2 includes a main body part 2a and a derotation part 2b arranged in sequence along the air flow direction.
  • the main body 2a is used to drive the air flow to flow through the fan 2, and it includes an impeller 21, a first housing 22, and the like.
  • the first housing 22 has a generally trumpet-shaped cavity inside, the small end of which is located upstream of the large end along the flow direction of the airflow, and the opening at the small end forms the air inlet of the fan 2.
  • the impeller 21 is rotatably arranged in the first housing 22, and is used to suck gas into the fan 2 and make the gas perform a mixed movement of two kinds of axial flow and centrifugal movement.
  • the impeller 21 includes a first blade 211 and a first hub 212.
  • the first blade 211 is a moving blade, which is arranged on the first hub 212 and rotates together with the first hub 212.
  • the impeller 21 includes 6-20 first blades 211.
  • the de-rotation part 2b is used to guide the air outlet of the fan 2 and reduce or even eliminate the radial sub-velocity of the air flow out of the main body part 2a to reduce the lateral air outlet of the fan 2 and make the air outlet of the fan 2 better. Usually concentrated in the central area of the air outlet.
  • the de-rotation part 2b includes a second blade 23, a second hub 24, a second housing 25, and the like.
  • the second housing 25 is connected to the lower end of the first housing 22 and has a hollow chamber having a substantially drum shape. The opening at the lower end of the second housing 25 forms the air outlet of the fan 2.
  • the second hub 24 is fixedly disposed in the hollow cavity of the second housing 25.
  • the second blade 23 is a stationary blade, which is arranged on the second hub 24 and is used to guide the air flow out of the fan 2 after the action of the impeller 21.
  • the derotation portion 2b includes 6-25 (for example, 15) second blades 23.
  • Both the air inlet and the air outlet of the fan 2 are circular openings.
  • the maximum diameter of the impeller 21 is denoted as D1.
  • the maximum diameter of the second housing 25 is denoted as D2.
  • the minimum radius of the first hub 212 is denoted as R1.
  • the maximum radius of the second hub 24 is denoted as R2.
  • the height of the second blade 23 is denoted as H.
  • the deflector 1 is configured as a deflector, butted with the air inlet of the fan 2, or inserted into the air inlet of the fan 2, to guide the airflow into the fan 2, and to the fan 2 Flow air is guided.
  • the deflector 1 includes a first deflector 11 and a second deflector 12 connected to each other, and the second deflector 12 is arranged at the outer edge of the inlet 1a of the first deflector 11,
  • the outer edge of the inlet 1a of the first guide portion 11 is flanged and bent, and is connected with the first guide portion 11 to form a flanging portion 1e.
  • the first guide portion 11 is configured as a revolving body, and a guide cavity is arranged inside the guide cavity.
  • the guide cavity has an axis 1d and an inlet 1a and an outlet 1b located at both ends of the first guide portion 11 along the axis 1d. Both the inlet 1a and the outlet 1b are circular openings.
  • the diameter of the outlet 1b is D.
  • the diameter D of the outlet 1b refers to the inner diameter of the first air guide 11 at the outlet 1b.
  • the second air guide 12 is connected to the outer edge of the inlet 1 a of the first air guide 11 and extends in a direction from the inlet 1 a of the first air guide 11 to the outlet 1 b of the first air guide 11.
  • the second guide portion 12 is a flanging of the first guide portion 11, and the second guide portion 12 is bent downward relative to the outer edge of the inlet 1 a of the first guide portion 11.
  • the connection between the second guide portion 12 and the first guide portion 11 is the point farthest from the outlet 1b of the flanging portion 1e, or in other words, the connection between the second guide portion 12 and the first guide portion 11 is The highest point of the flanging portion 1e.
  • the deflector 1 in the flow direction of the airflow, does not include other structural components located downstream of the first deflector 11.
  • the first deflector 11 is not only used as a guide
  • the inlet structure of the deflector 1 is also used as the outlet structure of the deflector 1.
  • the inlet 1a and the outlet 1b of the first deflector 11 are the inlet and the outlet of the deflector 1, respectively.
  • the airflow flows from the first deflector 11 When it flows out, it has flowed out of the deflector 1 and entered the fan 2. At this time, the outlet 1b is inserted into the air inlet of the fan 2, or the outlet 1b is butted with the air inlet of the fan 2.
  • the diameter D of the outlet 1b is adapted to the diameter of the air inlet (specifically the inner diameter of the fan 2 at the air inlet). For example, when the outlet 1b is butted with the air inlet of the fan 2, the diameter D of the outlet 1b is the same as the diameter of the air inlet equal.
  • the deflector 1 in addition to the first deflector 11, also includes other structural components connected downstream of the first deflector 11 along the flow direction of the airflow. At this time, the first deflector 11 is no longer As the outlet structure of the deflector 1, the air flow out of the first deflector 11 has not yet entered the fan 2, but needs to flow through other structural components of the deflector 1 downstream of the first deflector 11.
  • the cross-sectional profile of the first air guiding portion 11 is curved, such as an inwardly convex arc, parabola, or saddle shape.
  • the cross-sectional profile of the second guide portion 12 is also curved, such as an arc, a parabola, or a saddle shape.
  • the flange portion 1e formed by connecting the two has a curved cross-sectional profile line.
  • cross-section refers to the cross-section obtained along the plane where the axis 1d is located;
  • cross-section profile refers to the contour line of the inner or outer wall of the section;
  • the second guide part 12 can cooperate with the first guide part 11 to achieve a better guide effect, improve the air intake conditions of the fan 2, optimize the uniformity of the airflow velocity in the internal flow passage of the fan 2, and reduce the fan 2
  • the air flow in the internal flow channel is separated to improve the aerodynamic performance of the fan 2 and reduce the noise intensity of the fan 2.
  • the second air guiding part 12 is arranged to be folded relative to the outer edge of the inlet 1a of the first air guiding part 11, and the cross-sectional profile of the second air guiding part 12 is set to be curved, which can enhance the alignment at the first
  • the direction interference effect of the airflow downstream and outside of the guide portion 11 enables this part of the airflow to flow to the first guide portion 11 more evenly and smoothly, and further flow into the fan 2 more evenly and smoothly under the guidance of the first guide portion 11
  • the flow separation and air impact intensity at the entrance of the fan 2 and inside the fan 2 are effectively reduced, air vortexes are reduced, and the uniformity of flow velocity distribution is enhanced, thereby effectively improving the aerodynamic performance of the fan 2 and increasing the wind-to-noise ratio of the fan 2.
  • the housing of the whole machine and the entrance of the deflector 1 form a corner area
  • the second deflector is folded and bent relative to the outer edge of the inlet 1a of the first deflector 11
  • the guide portion 12, and the cross-sectional profile of the second guide portion 12 is set to a curved shape, which is also convenient for guiding the airflow in the corner area, reducing the accumulation of airflow in the corner area to form a vortex area, reducing the flow loss in the corresponding area, and indirectly Optimize the air intake conditions of the fan 2 to reduce the air flow wind force and improve the aerodynamic performance.
  • the cross-sectional profile of the first guide portion 11 and the second guide portion 12 are symmetrical about the reference line 1c; in other embodiments, the first guide portion 11 and the second guide portion 12
  • the cross-sectional profile of the flow portion 12 is asymmetric with respect to the reference line 1c.
  • the reference line 1c is a straight line passing through the junction of the first air guiding portion 11 and the second air guiding portion 12 and parallel to the axis 1d of the first air guiding portion 11.
  • the cross-sectional profile of the first guide portion 11 and the second guide portion 12 are not only the same in line type, but also in the same curve specification. For example, they are arcs with equal radius and equal circumference.
  • the cross-sectional profile of the first diversion portion 11 and the second diversion portion 12, or line types are different, for example, one of them is arc-shaped and the other is parabolic, or the line types are the same , But the curve specifications are different. For example, although both are arcs, the radius and/or circumference of the two are different.
  • FIGS. 3-5 show some embodiments when the cross-sectional profile lines of the first guide portion 11 and the second guide portion 12 are symmetrical with respect to the reference line 1c
  • FIG. 6 shows the first guide portion 11 and Part of the embodiment when the cross-sectional profile of the second air guide 12 is asymmetric with respect to the reference line 1c.
  • the cross-sectional shape of the first guide portion 11 and the second guide portion 12 are symmetrical about the reference line 1c, and both are arcs with a radius of r, where the first guide The flow portion 11 protrudes inward (that is, toward the radial inner side of the first guide portion 11), and the second guide portion 12 protrudes outward (that is, toward the radial outer side of the first guide portion 11).
  • the arc lengths of the first guide portion 11 and the second guide portion 12 are equal, and both are equal to 0.25 times the entire circumference of the same radius, that is, both have a radius of r 1/4 arc shape. Based on this, as shown in FIG.
  • the cross-sectional profile of the flanging portion 1e is a semicircular arc with a radius of r, that is, the cross-sectional profile of the flanging portion 1e is a circular arc with a radius of r, and the flanging
  • the deflector 1 with the semi-circular arc-shaped flanging portion 1e is especially suitable for the fan 2 with at least one of the following parameters:
  • the maximum diameter D1 of the impeller 21 is 135-145mm
  • the maximum diameter D2 of the second housing 25 is 165-170mm
  • the maximum diameter 2*R2 of the second hub 24 is 110-120mm;
  • the height H of the second blade 23 is 45-55 mm.
  • the relationship between the arc radius r and the diameter D of the outlet 1b is set to 10 ⁇ D/2r ⁇ 16.67, which can effectively increase the air volume and reduce the noise, thereby effectively improving the wind Noise level.
  • Figures 7 and 8 respectively show the deflector without the second deflector 12 and with the second deflector 12 and the second deflector is connected with the first deflector 11 to form a semi-circular arc flanging
  • the cross-sectional profile lines of the first guide portion 11 and the second guide portion 12 are still symmetrical about the reference line 1c, but they are no longer arc-shaped, but elliptical. arc.
  • the arc lengths of the first guide portion 11 and the second guide portion 12 are both equal to 0.25 times the circumference of a complete ellipse of the same specification, that is, both are in the shape of a quarter elliptical arc.
  • the cross-sectional profile of the flanging portion 1e is no longer in the shape of a semicircular arc, but in a semi-elliptical arc shape, that is, the arc length of the flanging portion 1e is equal to 0.5 times the circumference of a full ellipse of the same specification.
  • the elliptical arc-shaped first guide part 11 is more conducive to guiding the airflow along the axial direction, reducing the accumulation of airflow near the hub and reducing the airflow near the hub.
  • the vortex area appears, so as to affect the smoothness of air flow and increase the risk of noise.
  • first axis one of the major axis and minor axis of the ellipse is called the first axis
  • second axis the length of the first axis is set to 2a
  • the length of the second axis is set to b, to facilitate description.
  • first axis is parallel to the axis 1d
  • second axis is perpendicular to the axis 1d.
  • the deflector 1 with the semi-elliptical arc flanging portion 1e is especially suitable for the fan 2 with at least one of the following parameters:
  • the maximum diameter D1 of the impeller 21 is 148-155mm
  • the maximum diameter D2 of the second housing 25 is 165-170mm
  • the ratio between the maximum radius R2 of the second hub 24 and the minimum radius R1 of the first hub 212 Is 6-7.35;
  • the maximum diameter 2*R2 of the second hub 24 is 90-100mm
  • the height H of the second blade 23 is 30-36 mm.
  • some embodiments set the relationship between a and b to 0.15 ⁇ a/b ⁇ 2. For example, in the embodiment shown in FIG. 4, 0.15 ⁇ a/b ⁇ 0.95. For another example, in the embodiment shown in FIG. 5, 1.05 ⁇ a/b ⁇ 2.
  • the cross-sectional profile lines of the first air guiding part 11 and the second air guiding part 12 are no longer symmetrical with respect to the reference line 1c, but the cross-sectional profile lines of the first air guiding part 11 are A saddle-shaped curve, and the cross-sectional profile of the second diversion portion 12 is a circular arc-shaped curve.
  • the deflector 1 shown in Fig. 6 is an improvement on the basis of the semicircular deflector 1 shown in Fig. 3, which is suitable for the fan 2 corresponding to the deflector 1 shown in Fig. 3, and is especially suitable for For example, if the diameter of the air inlet of the semi-circular deflector shown in Figure 3 (corresponding to the diameter of the air inlet of the semi-circular deflector shown in Figure 3, the diameter of the air inlet is 15%-25% smaller than the corresponding fan in the embodiment of Figure 3) The marked D) is 108mm, then the diameter of the air inlet of the saddle-shaped deflector shown in Fig. 6 is 108*75%mm ⁇ 108*85%mm, that is, 81-91.8mm.
  • the cross-sectional profile of the first air guiding portion 11 is set to a saddle shape. Compared with the case where the cross-sectional profile of the first air guiding portion 11 is in a circular arc shape, since the saddle shape has a greater inclination relative to the circular arc shape, the In the case of the same outlet area (the area of the outlet 1b), when the cross-sectional profile of the first guide portion 11 is saddle-shaped, the inlet area (the area of the inlet 1a) is larger, which is more conducive to the airflow outside the deflector 1
  • the introduction of which not only helps to increase the air intake, but also helps to increase the flow rate of the airflow when passing through the deflector 2, and also helps prevent the airflow from accumulating on the inner wall of the deflector 1 and reduce the risk of vortex formation. This is more conducive to improving the air inlet conditions of the fan 2 and increasing the wind-to-noise ratio of the fan 2.
  • the structural form of the flanging portion 1e is not limited to those shown in FIGS. 3-6.
  • the cross-sectional profile of the second guide portion 12 is no longer 1/4 arc, but shorter than 1/4 arc.
  • the flange portion 1e is not It is a semi-circular arc again, and its circumference L is no longer 0.5 times the entire circumference of the same radius, but is greater than 0.25 times the entire circumference of the same radius, and less than 0.5 times the entire circumference of the same radius.
  • the cross-sectional profile lines of the first air guide portion 11 and the second air guide portion 12 are no longer elliptical arc curves of the same specification, but become the second axis length. Different elliptical arc curves.
  • the length of the second axis of the first guide portion 11 is b1 and the length of the second guide portion 12 is b2
  • the dimension of the flange portion 1e perpendicular to the axis 1d is
  • the cross-sectional profile lines of the first diversion portion 11 and the second diversion portion 12 are parabolic symmetrical with respect to the reference line 1c, and the cross-sectional profile of the flanging portion 1e is semi-parabolic.
  • Arranging the first guide portion 11 in a parabolic shape is beneficial to reduce the accumulation of airflow near the hub, reduce noise, improve the smoothness of air flow, and be able to adapt to different intake conditions more flexibly.

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Abstract

A flow guide device, a fan assembly, and an electric appliance. The flow guide device (1) comprises: a first flow guide portion (11) having a flow guide cavity, wherein the flow guide cavity has an axis (1d), and an inlet (1a) and an outlet (1b) that are located at the two ends of the first flow guide portion (11) along the axis (1d); and a second flow guide portion (12), wherein the second flow guide portion is connected to the outer edge of the inlet (1a) of the first flow guide portion and extends along a direction from the inlet (1a) to the outlet (1b), so that the first flow guide portion (11) and the second flow guide portion (12) are connected to form a flanging portion (1e), the sectional mold line of the flanging portion (1e) is in the shape of a curve, and a section is obtained by sectioning a plane where the axis (1d) is located. A fan assembly comprises a fan (2) and the flow guide device (1), and the flow guide device is provided at the air inlet of the fan. An electric appliance comprises the fan assembly. By providing the flanging portion with the sectional mold line being in the shape of the curve at the inlet of the flow guide device, the present invention can realize a better flow guide effect, and facilitates improving the air intake condition of the fan.

Description

导流器、风机组件和电器Flow deflector, fan assembly and electrical appliances
相关申请的交叉引用Cross-references to related applications
本公开是以申请号为202010063871.3,申请日为2020年1月20日的中国申请为基础,并主张其优先权,该中国申请的公开内容在此作为整体引入本公开中。This disclosure is based on a Chinese application with an application number of 202010063871.3 and a filing date of January 20, 2020, and claims its priority. The disclosure of the Chinese application is hereby incorporated into this disclosure as a whole.
技术领域Technical field
本公开涉及电器技术领域,特别涉及一种导流器、风机组件和电器。The present disclosure relates to the technical field of electrical appliances, in particular to a deflector, a fan assembly and an electrical appliance.
背景技术Background technique
在空调和抽油烟机等电器中,一般设有风机和导流器,导流器例如设置在风机的进风口,对进入风机的气流进行导向,以优化风机的进气条件。In electrical appliances such as air conditioners and range hoods, fans and deflectors are generally provided. For example, the deflectors are arranged at the air inlet of the fan to guide the airflow entering the fan to optimize the air intake conditions of the fan.
如何利用导流器来实现更好的导流效果,从而更有效地改善风机的进气条件,提升风机的性能,一直是个难题。How to use the deflector to achieve a better diversion effect, so as to more effectively improve the air intake conditions of the fan, and improve the performance of the fan, has always been a problem.
发明内容Summary of the invention
本公开第一方面提供一种导流器,其包括:The first aspect of the present disclosure provides a flow deflector, which includes:
第一导流部,具有导流腔,导流腔具有轴线及沿着轴线位于第一导流部两端的入口和出口;和The first guiding part has a guiding cavity, the guiding cavity has an axis and an inlet and an outlet located at both ends of the first guiding part along the axis; and
第二导流部,连接于入口外缘并沿着由入口向出口的方向延伸,使得第一导流部与第二导流部连接形成翻边部;The second guide portion is connected to the outer edge of the inlet and extends along the direction from the inlet to the outlet, so that the first guide portion and the second guide portion are connected to form a flanged portion;
其中,翻边部的截面型线呈曲线形,截面为沿着轴线所在的平面剖切得到的截面。Wherein, the cross-sectional profile of the flanging portion is curved, and the cross-section is a cross-section cut along the plane where the axis is located.
在一些实施例中,第一导流部和/或第二导流部的截面型线呈弧形、抛物线形或马鞍形。In some embodiments, the cross-sectional profile of the first air guiding part and/or the second air guiding part is arc-shaped, parabolic or saddle-shaped.
在一些实施例中,第一导流部的截面型线和/或第二导流部的截面型线呈半径为r的圆弧形,第一导流部的出口直径为D,r与D之间的关系为10≤D/2r≤16.67;或者,第一导流部的截面型线和/或第二导流部的截面型线呈第一轴长为2a和第二轴长为b的椭圆弧形,第一轴和第二轴分别为长轴和短轴中的一个和另一个,a与b之间的关系为0.15≤a/b≤2。In some embodiments, the cross-sectional profile of the first diversion portion and/or the cross-sectional profile of the second diversion portion is arc-shaped with a radius of r, and the outlet diameter of the first diversion portion is D, r and D The relationship between them is 10≤D/2r≤16.67; or, the cross-sectional profile of the first diversion portion and/or the cross-sectional profile of the second diversion portion has a first axial length of 2a and a second axial length of b The first axis and the second axis are one and the other of the long axis and the short axis respectively, and the relationship between a and b is 0.15≤a/b≤2.
在一些实施例中,a与b之间的关系为0.15≤a/b≤0.95或1.05≤a/b≤2。In some embodiments, the relationship between a and b is 0.15≤a/b≤0.95 or 1.05≤a/b≤2.
在一些实施例中,第一导流部的截面型线和第二导流部的截面型线关于基准线对称或非对称,基准线为穿过第一导流部和第二导流部连接处并平行于轴线的直线。In some embodiments, the cross-sectional profile line of the first air guiding part and the cross-sectional profile line of the second air guiding part are symmetrical or asymmetric with respect to the reference line, and the reference line is connected through the first air guiding part and the second air guiding part. A straight line at and parallel to the axis.
在一些实施例中,翻边部的截面型线呈圆弧形、椭圆弧形、抛物线形或马鞍形。In some embodiments, the cross-sectional profile of the flanging portion has a circular arc shape, an elliptical arc shape, a parabola shape, or a saddle shape.
在一些实施例中,翻边部的截面型线呈圆弧形,翻边部的弧长大于或等于等半径整圆周长的0.25倍,并小于或等于等半径整圆周长的0.5倍;或者,翻边部的截面型线呈椭圆弧形,翻边部的弧长大于或等于同规格整椭圆周长的0.25倍,并小于或等于同规格整椭圆周长的0.5倍。In some embodiments, the cross-sectional profile of the flanging portion is in the shape of an arc, and the arc length of the flanging portion is greater than or equal to 0.25 times the entire circumference of the equal radius, and less than or equal to 0.5 times the entire circumference of the equal radius; or , The cross-sectional profile of the flanging part is an elliptical arc, and the arc length of the flanging part is greater than or equal to 0.25 times of the circumference of the ellipse of the same specification, and less than or equal to 0.5 times of the circumference of the ellipse of the same specification.
本公开第二方面提供一种风机组件,其包括风机和本公开的导流器,导流器设置于风机的入口。A second aspect of the present disclosure provides a fan assembly, which includes a fan and the deflector of the present disclosure, and the deflector is arranged at the inlet of the fan.
在一些实施例中,第一导流部的出口插入风机的进风口。In some embodiments, the outlet of the first air guide is inserted into the air inlet of the fan.
在一些实施例中,风机为混流风机、轴流风机或离心风机。In some embodiments, the fan is a mixed flow fan, an axial flow fan, or a centrifugal fan.
在一些实施例中,风机为混流风机,其中,风机包括6-20片动叶片;和/或,风机包括6-25片静叶片。In some embodiments, the fan is a mixed flow fan, wherein the fan includes 6-20 moving blades; and/or, the fan includes 6-25 stationary blades.
在一些实施例中,风机包括15片静叶片。In some embodiments, the fan includes 15 stationary blades.
本公开第三方面提供一种电器,其包括本公开的风机组件。A third aspect of the present disclosure provides an electrical appliance, which includes the fan assembly of the present disclosure.
在一些实施例中,电器为空调或抽油烟机。In some embodiments, the electrical appliance is an air conditioner or a range hood.
本公开在导流器的入口设置截面型线呈曲线形的翻边部,能够实现更好的导流效果,有利于改善风机的进气条件,提升风机的性能。In the present disclosure, a flanging portion with a curved cross-section profile is arranged at the inlet of the deflector, which can achieve a better diversion effect, is beneficial to improve the air intake condition of the fan, and enhance the performance of the fan.
通过以下参照附图对本公开的示例性实施例进行详细描述,本公开的其它特征及其优点将会变得清楚。Through the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings, other features and advantages of the present disclosure will become clear.
附图说明Description of the drawings
为了更清楚地说明本公开实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本公开的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.
图1示出本公开一些实施例中风机组件的结构示意图。Fig. 1 shows a schematic structural diagram of a fan assembly in some embodiments of the present disclosure.
图2示出图1的纵向剖切图。Fig. 2 shows a longitudinal section view of Fig. 1.
图3示出图2中导流器的纵向剖切图。Fig. 3 shows a longitudinal section view of the deflector in Fig. 2.
图4示出本公开另一些实施例中导流器的纵向剖切图。Fig. 4 shows a longitudinal sectional view of the deflector in other embodiments of the present disclosure.
图5示出本公开又一些实施例中导流器的纵向剖切图。Fig. 5 shows a longitudinal sectional view of the deflector in still other embodiments of the present disclosure.
图6示出本公开再一些实施例中导流器的纵向剖切图。Fig. 6 shows a longitudinal sectional view of the deflector in still other embodiments of the present disclosure.
图7示出未设置第二导流部的导流器的仿真示意图。Fig. 7 shows a schematic diagram of a simulation of a deflector without a second deflector.
图8示出具有半圆弧型翻边部的导流器的仿真示意图。Fig. 8 shows a schematic diagram of a simulation of a deflector with a semi-circular arc-shaped flanging portion.
具体实施方式Detailed ways
下面将结合本公开实施例中的附图,对本公开实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本公开一部分实施例,而不是全部的实施例。以下对至少一个示例性实施例的描述实际上仅仅是说明性的,决不作为对本公开及其应用或使用的任何限制。基于本公开中的实施例,本领域普通技术人员在没有开展创造性劳动前提下所获得的所有其他实施例,都属于本公开保护的范围。The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any limitation to the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without carrying out creative work fall within the protection scope of the present disclosure.
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论,但在适当情况下,所述技术、方法和设备应当被视为授权说明书的一部分。The technologies, methods, and equipment known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be regarded as part of the authorization specification.
下面所描述的本公开不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。The technical features involved in the different embodiments of the present disclosure described below can be combined with each other as long as they do not conflict with each other.
此外,在本公开的描述中,需要理解的是,使用“第一”、“第二”等词语来限定零部件,仅仅是为了便于对相应零部件进行区别,如没有另行声明,上述词语并没有特殊含义,因此不能理解为对本公开保护范围的限制。In addition, in the description of the present disclosure, it should be understood that the use of terms such as “first” and “second” to define parts is only for the convenience of distinguishing the corresponding parts. Unless otherwise stated, the above terms are not There is no special meaning, and therefore cannot be understood as a limitation on the protection scope of the present disclosure.
在本公开的描述中,方位词“上”、“下”是基于气流流动方向定义的,流入的方向为“上”,流出的方向为“下”。In the description of the present disclosure, the orientation words "upper" and "lower" are defined based on the flow direction of the airflow, the inflow direction is "upper", and the outflow direction is "lower".
图1-6示出本公开风机组件及其导流器的结构示意图。Figures 1-6 show the structural schematic diagrams of the fan assembly and its deflector of the present disclosure.
参照图1,风机组件应用于空调或抽油烟机等电器中,包括风机2和导流器1,导流器1设置在风机2的进风口,用于对进入风机2的气流进行导向。1, the fan assembly is used in electrical appliances such as air conditioners or range hoods, and includes a fan 2 and a deflector 1. The deflector 1 is arranged at the air inlet of the fan 2 and is used to guide the airflow entering the fan 2.
一些实施方式中,风机2为轴流风机、离心风机或混合风机。为了描述方便,以下仅以风机2为混流风机为例予以说明。In some embodiments, the fan 2 is an axial fan, a centrifugal fan, or a hybrid fan. For the convenience of description, the following only takes the fan 2 as a mixed flow fan as an example for description.
混流风机是介于轴流风机和离心风机之间的风机,其使空气既做离心运动,又做轴向运动。由于混流风机内空气的运动混合了轴流与离心两种运动形式,所以叫“混流”。The mixed flow fan is a fan between the axial flow fan and the centrifugal fan, which makes the air do both centrifugal movement and axial movement. Because the movement of the air in the mixed flow fan is a mixture of axial flow and centrifugal movement, it is called "mixed flow".
混流风机将轴流风机和离心风机的特征予以结合,其既具有高于轴流风机的风压系数,又具有大于离心风机的流量系数,同时具有安装简单方便的特点。将混流风机应用于空调或抽油烟机等中,能够更好地满足风量和压头指标,实现更理想的高风噪比。其中,压头是指单位重量流体的能量。风噪比是指风量与噪声的比值。The mixed flow fan combines the characteristics of the axial flow fan and the centrifugal fan. It not only has a wind pressure coefficient higher than that of an axial flow fan, but also has a flow coefficient larger than that of a centrifugal fan, and has the characteristics of simple and convenient installation. The mixed flow fan used in air conditioners or range hoods can better meet the air volume and pressure head indicators, and achieve a more ideal high wind-to-noise ratio. Among them, the pressure head refers to the energy per unit weight of the fluid. Wind-to-noise ratio refers to the ratio of air volume to noise.
图2示出风机2为混流风机时的一种结构形式。其中,风机2包括沿着气流流动方向依次布置的主体部2a和消旋部2b。Figure 2 shows a structural form when the fan 2 is a mixed flow fan. Among them, the fan 2 includes a main body part 2a and a derotation part 2b arranged in sequence along the air flow direction.
主体部2a用于驱动气流流经风机2,其包括叶轮21和第一壳体22等。第一壳体22内部具有大致呈喇叭形的空腔,其小端沿着气流流动方向位于大端的上游,且小端处的开口形成风机2的进风口。叶轮21可转动地设置在第一壳体22中,用于抽吸气体进入风机2,并使气体做轴流和离心两种运动复合的混合运动。叶轮21包括第一叶片211和第一轮毂212。第一叶片211为动叶片,其设置在第一轮毂212上,并随第一轮毂212一起转动。一些实施例中,叶轮21包括6-20片第一叶片211。The main body 2a is used to drive the air flow to flow through the fan 2, and it includes an impeller 21, a first housing 22, and the like. The first housing 22 has a generally trumpet-shaped cavity inside, the small end of which is located upstream of the large end along the flow direction of the airflow, and the opening at the small end forms the air inlet of the fan 2. The impeller 21 is rotatably arranged in the first housing 22, and is used to suck gas into the fan 2 and make the gas perform a mixed movement of two kinds of axial flow and centrifugal movement. The impeller 21 includes a first blade 211 and a first hub 212. The first blade 211 is a moving blade, which is arranged on the first hub 212 and rotates together with the first hub 212. In some embodiments, the impeller 21 includes 6-20 first blades 211.
消旋部2b用于对风机2的出风进行引导,通过减小甚至消除从主体部2a流出气流的径向分速度,来减少风机2的侧向出风,而使风机2的出风更多集中于出风口中心区域。消旋部2b包括第二叶片23、第二轮毂24和第二壳体25等。第二壳体25连接于第一壳体22的下端,并具有大致呈鼓形的中空腔室。第二壳体25的下端开口形成风机2的出风口。第二轮毂24固定设置于第二壳体25的中空腔室中。第二叶片23为静叶片,其设置在第二轮毂24上,用于对经叶轮21作用后流出风机2的气流进行导向。一些实施例中,消旋部2b包括6-25片(例如15片)第二叶片23。The de-rotation part 2b is used to guide the air outlet of the fan 2 and reduce or even eliminate the radial sub-velocity of the air flow out of the main body part 2a to reduce the lateral air outlet of the fan 2 and make the air outlet of the fan 2 better. Mostly concentrated in the central area of the air outlet. The de-rotation part 2b includes a second blade 23, a second hub 24, a second housing 25, and the like. The second housing 25 is connected to the lower end of the first housing 22 and has a hollow chamber having a substantially drum shape. The opening at the lower end of the second housing 25 forms the air outlet of the fan 2. The second hub 24 is fixedly disposed in the hollow cavity of the second housing 25. The second blade 23 is a stationary blade, which is arranged on the second hub 24 and is used to guide the air flow out of the fan 2 after the action of the impeller 21. In some embodiments, the derotation portion 2b includes 6-25 (for example, 15) second blades 23.
风机2的进风口和出风口均为圆形开口。Both the air inlet and the air outlet of the fan 2 are circular openings.
在图2中,叶轮21的最大直径标示为D1。第二壳体25的最大直径标示为D2。第一轮毂212的最小半径标示为R1。第二轮毂24的最大半径标示为R2。第二叶片23的高度标示为H。In Fig. 2, the maximum diameter of the impeller 21 is denoted as D1. The maximum diameter of the second housing 25 is denoted as D2. The minimum radius of the first hub 212 is denoted as R1. The maximum radius of the second hub 24 is denoted as R2. The height of the second blade 23 is denoted as H.
参照图1-2,一些实施例中,导流器1被构造为导流罩,与风机2的进风口对接,或插入风机2的进风口中,引导气流流入风机2,对风机2的来流空气进行导向。Referring to Figures 1-2, in some embodiments, the deflector 1 is configured as a deflector, butted with the air inlet of the fan 2, or inserted into the air inlet of the fan 2, to guide the airflow into the fan 2, and to the fan 2 Flow air is guided.
如图3-6所示,导流器1包括彼此连接的第一导流部11和第二导流部12,第二导流部12设置于第一导流部11的入口1a外缘,且相对于第一导流部11的入口1a外缘翻边并弯折,与第一导流部11之间连接形成翻边部1e。As shown in FIGS. 3-6, the deflector 1 includes a first deflector 11 and a second deflector 12 connected to each other, and the second deflector 12 is arranged at the outer edge of the inlet 1a of the first deflector 11, In addition, the outer edge of the inlet 1a of the first guide portion 11 is flanged and bent, and is connected with the first guide portion 11 to form a flanging portion 1e.
其中,第一导流部11被构造为回转体,其内部设有导流腔,导流腔具有轴线1d及沿 着轴线1d位于第一导流部11两端的入口1a和出口1b。入口1a和出口1b均为圆形开口。出口1b的直径为D。考虑第一导流部11的壁厚时,出口1b的直径D指第一导流部11在出口1b处的内径。Wherein, the first guide portion 11 is configured as a revolving body, and a guide cavity is arranged inside the guide cavity. The guide cavity has an axis 1d and an inlet 1a and an outlet 1b located at both ends of the first guide portion 11 along the axis 1d. Both the inlet 1a and the outlet 1b are circular openings. The diameter of the outlet 1b is D. When considering the wall thickness of the first air guide 11, the diameter D of the outlet 1b refers to the inner diameter of the first air guide 11 at the outlet 1b.
第二导流部12连接于第一导流部11的入口1a外缘并沿着由第一导流部11的入口1a向第一导流部11的出口1b的方向延伸。此时,第二导流部12为第一导流部11的翻边,且第二导流部12相对于第一导流部11的入口1a外缘向下弯折。第二导流部12与第一导流部11的连接处为翻边部1e的距出口1b最远的点,或者说,第二导流部12与第一导流部11的连接处为翻边部1e的最高点。The second air guide 12 is connected to the outer edge of the inlet 1 a of the first air guide 11 and extends in a direction from the inlet 1 a of the first air guide 11 to the outlet 1 b of the first air guide 11. At this time, the second guide portion 12 is a flanging of the first guide portion 11, and the second guide portion 12 is bent downward relative to the outer edge of the inlet 1 a of the first guide portion 11. The connection between the second guide portion 12 and the first guide portion 11 is the point farthest from the outlet 1b of the flanging portion 1e, or in other words, the connection between the second guide portion 12 and the first guide portion 11 is The highest point of the flanging portion 1e.
气流由第一导流部11进入导流器1,即第一导流部11为导流器1的入口结构。The airflow enters the deflector 1 from the first deflector 11, that is, the first deflector 11 is the inlet structure of the deflector 1.
参照图3-6,一些实施例中,在气流流动方向,导流器1未包括位于第一导流部11下游的其他结构部件,这种情况下,第一导流部11不仅用作导流器1的入口结构,同时也用作导流器1的出口结构,第一导流部11的入口1a和出口1b分别为导流器1的入口和出口,气流从第一导流部11流出时,即已流出导流器1,进入风机2。此时,出口1b插入风机2的进风口中,或者,出口1b与风机2的进风口对接。出口1b的直径D与进风口的直径(具体为风机2在进风口处的内径)相适配,例如,在出口1b与风机2的进风口对接时,出口1b的直径D与进风口的直径相等。3-6, in some embodiments, in the flow direction of the airflow, the deflector 1 does not include other structural components located downstream of the first deflector 11. In this case, the first deflector 11 is not only used as a guide The inlet structure of the deflector 1 is also used as the outlet structure of the deflector 1. The inlet 1a and the outlet 1b of the first deflector 11 are the inlet and the outlet of the deflector 1, respectively. The airflow flows from the first deflector 11 When it flows out, it has flowed out of the deflector 1 and entered the fan 2. At this time, the outlet 1b is inserted into the air inlet of the fan 2, or the outlet 1b is butted with the air inlet of the fan 2. The diameter D of the outlet 1b is adapted to the diameter of the air inlet (specifically the inner diameter of the fan 2 at the air inlet). For example, when the outlet 1b is butted with the air inlet of the fan 2, the diameter D of the outlet 1b is the same as the diameter of the air inlet equal.
另一些实施例中,除了第一导流部11,导流器1还包括沿着气流流动方向连接于第一导流部11下游的其他结构部件,此时,第一导流器11不再用作导流器1的出口结构,从第一导流部11流出的气流,尚未进入风机2,而是还需流经导流器1的位于第一导流部11下游的其他结构部件。In other embodiments, in addition to the first deflector 11, the deflector 1 also includes other structural components connected downstream of the first deflector 11 along the flow direction of the airflow. At this time, the first deflector 11 is no longer As the outlet structure of the deflector 1, the air flow out of the first deflector 11 has not yet entered the fan 2, but needs to flow through other structural components of the deflector 1 downstream of the first deflector 11.
参照图1-6,第一导流部11的截面型线呈曲线形,例如向内凸出的弧形、抛物线形或马鞍形等。同时,第二导流部12的截面型线也呈曲线形,例如弧形、抛物线形或马鞍形等。这种情况下,二者连接形成的翻边部1e具有曲线形的截面型线。在本公开中,“截面”均是指沿着轴线1d所在平面剖切得到的截面;“截面型线”是指,截面内壁或外壁的轮廓线;马鞍形曲线是指马鞍面(也称双曲抛物面)的外缘轨迹线,用公式表示即为y=x 2/c 2-z 2/d 2,c和d为常数,c和d取不同值时,获得不同的马鞍形曲线。 Referring to FIGS. 1-6, the cross-sectional profile of the first air guiding portion 11 is curved, such as an inwardly convex arc, parabola, or saddle shape. At the same time, the cross-sectional profile of the second guide portion 12 is also curved, such as an arc, a parabola, or a saddle shape. In this case, the flange portion 1e formed by connecting the two has a curved cross-sectional profile line. In the present disclosure, "cross-section" refers to the cross-section obtained along the plane where the axis 1d is located; "cross-section profile" refers to the contour line of the inner or outer wall of the section; saddle-shaped curve refers to the saddle surface (also called double The trajectory of the outer edge of the curved paraboloid, expressed by the formula is y=x 2 /c 2 -z 2 /d 2 , c and d are constants, and when c and d take different values, different saddle-shaped curves are obtained.
基于上述设置,第二导流部12能够与第一导流部11配合,实现更好的导流效果,改善风机2的进气条件,优化风机2内部流道中气流速度的均匀性,减少风机2内部流道中的气流流动分离,提高风机2的气动性能,并降低风机2的噪声强度。Based on the above arrangement, the second guide part 12 can cooperate with the first guide part 11 to achieve a better guide effect, improve the air intake conditions of the fan 2, optimize the uniformity of the airflow velocity in the internal flow passage of the fan 2, and reduce the fan 2 The air flow in the internal flow channel is separated to improve the aerodynamic performance of the fan 2 and reduce the noise intensity of the fan 2.
尤其,设置相对于第一导流部11入口1a外缘翻边弯折的第二导流部12,并将第二导流部12的截面型线设置为曲线形,能够增强对位于第一导流部11外侧下游的气流的走向干涉作用,使得这部分气流能够更均匀顺畅地流向第一导流部11,并进一步在第一导流部11的导向作用下更均匀顺畅地流入风机2中,从而有效降低风机2入口处及风机2内部的流动分离及气流冲击强度,减少气流涡流,增强流速分布均匀性,进而有效改善风机2的气动性能,提高风机2的风噪比。并且,导流器1应用于整机中时,整机壳体与导流器1的入口处形成角落区域,通过设置相对于第一导流部11入口1a外缘翻边弯折的第二导流部12,并将第二导流部12的截面型线设置为曲线形,还便于对角落区域内气流进行导向,减少角落区域内气流聚集形成涡区,减少相应区域的流动损失,间接优化风机2的进气条件,减少气流流动风力,提高气动性能。In particular, the second air guiding part 12 is arranged to be folded relative to the outer edge of the inlet 1a of the first air guiding part 11, and the cross-sectional profile of the second air guiding part 12 is set to be curved, which can enhance the alignment at the first The direction interference effect of the airflow downstream and outside of the guide portion 11 enables this part of the airflow to flow to the first guide portion 11 more evenly and smoothly, and further flow into the fan 2 more evenly and smoothly under the guidance of the first guide portion 11 In this way, the flow separation and air impact intensity at the entrance of the fan 2 and inside the fan 2 are effectively reduced, air vortexes are reduced, and the uniformity of flow velocity distribution is enhanced, thereby effectively improving the aerodynamic performance of the fan 2 and increasing the wind-to-noise ratio of the fan 2. In addition, when the deflector 1 is used in the whole machine, the housing of the whole machine and the entrance of the deflector 1 form a corner area, and the second deflector is folded and bent relative to the outer edge of the inlet 1a of the first deflector 11 The guide portion 12, and the cross-sectional profile of the second guide portion 12 is set to a curved shape, which is also convenient for guiding the airflow in the corner area, reducing the accumulation of airflow in the corner area to form a vortex area, reducing the flow loss in the corresponding area, and indirectly Optimize the air intake conditions of the fan 2 to reduce the air flow wind force and improve the aerodynamic performance.
参照图3-6,一些实施例中,第一导流部11和第二导流部12的截面型线关于基准线1c对称;另一些实施例中,第一导流部11和第二导流部12的截面型线关于基准线1c非对称。基准线1c为穿过第一导流部11和第二导流部12连接处并平行于第一导流部11轴线1d的直线。其中,不难理解,对称时,第一导流部11和第二导流部12的截面型线不仅线型种类相同,并且曲线规格相同,例如二者为等半径且等周长的圆弧;而非对称时,第一导流部11和第二导流部12的截面型线,或者线型种类不同,例如其中一个为弧形,另一个为抛物线形,或者,线型种类虽相同,但曲线规格不同,例如,虽二者均为圆弧,但二者的半径和/或周长不同。3-6, in some embodiments, the cross-sectional profile of the first guide portion 11 and the second guide portion 12 are symmetrical about the reference line 1c; in other embodiments, the first guide portion 11 and the second guide portion 12 The cross-sectional profile of the flow portion 12 is asymmetric with respect to the reference line 1c. The reference line 1c is a straight line passing through the junction of the first air guiding portion 11 and the second air guiding portion 12 and parallel to the axis 1d of the first air guiding portion 11. Among them, it is not difficult to understand that when symmetrical, the cross-sectional profile of the first guide portion 11 and the second guide portion 12 are not only the same in line type, but also in the same curve specification. For example, they are arcs with equal radius and equal circumference. When asymmetric, the cross-sectional profile of the first diversion portion 11 and the second diversion portion 12, or line types are different, for example, one of them is arc-shaped and the other is parabolic, or the line types are the same , But the curve specifications are different. For example, although both are arcs, the radius and/or circumference of the two are different.
其中,图3-5示出了第一导流部11和第二导流部12的截面型线关于基准线1c对称时的部分实施例,图6则示出了第一导流部11和第二导流部12的截面型线关于基准线1c非对称时的部分实施例。Among them, FIGS. 3-5 show some embodiments when the cross-sectional profile lines of the first guide portion 11 and the second guide portion 12 are symmetrical with respect to the reference line 1c, and FIG. 6 shows the first guide portion 11 and Part of the embodiment when the cross-sectional profile of the second air guide 12 is asymmetric with respect to the reference line 1c.
如图3所示,在该实施例中,第一导流部11和第二导流部12的截面型关于基准线1c对称,二者均为半径为r圆弧形,其中,第一导流部11向内(即向着第一导流部11的径向内侧)凸出,第二导流部12向外(即向着第一导流部11的径向外侧)凸出。并且,由图3可知,该实施例中,第一导流部11和第二导流部12的弧长相等,并均等于等半径整圆周长的0.25倍,即二者均呈半径为r的1/4圆弧形。基于此,如图3所示,翻边部1e的截面型线呈半径为r的半圆弧形,也就是说,翻边部1e的截面型线呈半径为r的圆弧形,且翻边部1e的弧长等于等半径整圆周长的0.5倍,用公式表示即为翻边部1e的弧长L=0.5*2πr。As shown in Figure 3, in this embodiment, the cross-sectional shape of the first guide portion 11 and the second guide portion 12 are symmetrical about the reference line 1c, and both are arcs with a radius of r, where the first guide The flow portion 11 protrudes inward (that is, toward the radial inner side of the first guide portion 11), and the second guide portion 12 protrudes outward (that is, toward the radial outer side of the first guide portion 11). And, it can be seen from FIG. 3 that in this embodiment, the arc lengths of the first guide portion 11 and the second guide portion 12 are equal, and both are equal to 0.25 times the entire circumference of the same radius, that is, both have a radius of r 1/4 arc shape. Based on this, as shown in FIG. 3, the cross-sectional profile of the flanging portion 1e is a semicircular arc with a radius of r, that is, the cross-sectional profile of the flanging portion 1e is a circular arc with a radius of r, and the flanging The arc length of the portion 1e is equal to 0.5 times the entire circumference of the equal radius, and expressed by the formula is the arc length L=0.5*2πr of the flanging portion 1e.
经研究表明,具有半圆弧形翻边部1e的导流器1,尤其适用于具有以下参数至少之一的风机2:Studies have shown that the deflector 1 with the semi-circular arc-shaped flanging portion 1e is especially suitable for the fan 2 with at least one of the following parameters:
叶轮21的最大直径D1为135-145mm;The maximum diameter D1 of the impeller 21 is 135-145mm;
第二壳体25的最大直径D2为165-170mm;The maximum diameter D2 of the second housing 25 is 165-170mm;
第二轮毂24的最大半径R2与第一轮毂212的最小半径R1之间的比值
Figure PCTCN2020130044-appb-000001
为7.5-9;
The ratio between the maximum radius R2 of the second hub 24 and the minimum radius R1 of the first hub 212
Figure PCTCN2020130044-appb-000001
7.5-9;
第二轮毂24的最大直径2*R2为110-120mm;The maximum diameter 2*R2 of the second hub 24 is 110-120mm;
第二叶片23的高度H为45-55mm。The height H of the second blade 23 is 45-55 mm.
为了进一步改善导流效果,该实施例中,圆弧半径r与出口1b直径D之间的关系设置为10≤D/2r≤16.67,这样能够有效增大风量,减小噪声,从而有效改善风噪水平。In order to further improve the diversion effect, in this embodiment, the relationship between the arc radius r and the diameter D of the outlet 1b is set to 10≤D/2r≤16.67, which can effectively increase the air volume and reduce the noise, thereby effectively improving the wind Noise level.
图7和图8分别示出了未设置第二导流部12的导流器和设有第二导流部12且第二导流部与第一导流部11连接形成半圆弧形翻边部1e的导流器1的仿真示意图。比较图7和图8可知,与未设置第二导流部12的导流器相比,具有半圆弧形翻边部1e的导流器1,气流在导流器1径向上的速度分布更加均匀,且气流在导流器1中的流动分离得以改善,涡流减少,这有利于增大风量,降低噪声。Figures 7 and 8 respectively show the deflector without the second deflector 12 and with the second deflector 12 and the second deflector is connected with the first deflector 11 to form a semi-circular arc flanging A schematic diagram of the simulation of the deflector 1 of the section 1e. Comparing Figures 7 and 8, it can be seen that, compared with the deflector without the second deflector 12, the deflector 1 with the semi-circular arc-shaped flanging portion 1e has a more rapid velocity distribution in the radial direction of the deflector 1 It is uniform, and the flow separation of the airflow in the deflector 1 is improved, and the vortex is reduced, which is beneficial to increase the air volume and reduce the noise.
在图4和图5所示实施例中,第一导流部11和第二导流部12的截面型线仍关于基准线1c对称,但二者不再呈圆弧形,而是呈椭圆弧形。且第一导流部11和第二导流部12的弧长均等于同规格整椭圆周长的0.25倍,即二者均呈1/4椭圆弧形。这种情况下,翻边部1e的截面型线不再呈半圆弧形,而是呈半椭圆弧形,即翻边部1e的弧长等于同规格整椭圆周长的0.5倍。In the embodiment shown in FIGS. 4 and 5, the cross-sectional profile lines of the first guide portion 11 and the second guide portion 12 are still symmetrical about the reference line 1c, but they are no longer arc-shaped, but elliptical. arc. In addition, the arc lengths of the first guide portion 11 and the second guide portion 12 are both equal to 0.25 times the circumference of a complete ellipse of the same specification, that is, both are in the shape of a quarter elliptical arc. In this case, the cross-sectional profile of the flanging portion 1e is no longer in the shape of a semicircular arc, but in a semi-elliptical arc shape, that is, the arc length of the flanging portion 1e is equal to 0.5 times the circumference of a full ellipse of the same specification.
与圆弧形的第一导流部11相比,椭圆弧形的第一导流部11更有利于引导气流沿着轴向流动,减少气流在轮毂附近产生的气流堆积,降低气流在轮毂附近出现涡区,以至于影响气流流动顺畅性和增大噪声的风险。Compared with the arc-shaped first guide part 11, the elliptical arc-shaped first guide part 11 is more conducive to guiding the airflow along the axial direction, reducing the accumulation of airflow near the hub and reducing the airflow near the hub. The vortex area appears, so as to affect the smoothness of air flow and increase the risk of noise.
参照图4-5,将椭圆形的长轴和短轴中的一个称为第一轴,另一个称为第二轴,并将第一轴的长度设为2a,第二轴的长度设为b,以方便描述。具体在图4和图5中,第一轴平行于轴线1d;第二轴则垂直于轴线1d。同时,基于此可以理解,前述“同规格”是指,具有相同的第一轴和第二轴。Referring to Figure 4-5, one of the major axis and minor axis of the ellipse is called the first axis, the other is called the second axis, and the length of the first axis is set to 2a, and the length of the second axis is set to b, to facilitate description. Specifically in Figures 4 and 5, the first axis is parallel to the axis 1d; the second axis is perpendicular to the axis 1d. At the same time, based on this, it can be understood that the aforementioned "same specification" refers to having the same first shaft and second shaft.
经研究表明,具有半椭圆弧形翻边部1e的导流器1,尤其适用于具有以下参数至少之一的风机2:Research has shown that the deflector 1 with the semi-elliptical arc flanging portion 1e is especially suitable for the fan 2 with at least one of the following parameters:
叶轮21的最大直径D1为148-155mm;The maximum diameter D1 of the impeller 21 is 148-155mm;
第二壳体25的最大直径D2为165-170mm;The maximum diameter D2 of the second housing 25 is 165-170mm;
第二轮毂24的最大半径R2与第一轮毂212的最小半径R1之间的比值
Figure PCTCN2020130044-appb-000002
为6-7.35;
The ratio between the maximum radius R2 of the second hub 24 and the minimum radius R1 of the first hub 212
Figure PCTCN2020130044-appb-000002
Is 6-7.35;
第二轮毂24的最大直径2*R2为90-100mm;The maximum diameter 2*R2 of the second hub 24 is 90-100mm;
第二叶片23的高度H为30-36mm。The height H of the second blade 23 is 30-36 mm.
为了更好地优化风机2的进气条件,减少风机2内部气流流动分离,改善风机2的气动性能,降低风机2的涡流噪声和离散噪声,一些实施例将a与b之间的关系为0.15≤a/b≤2。例如,在图4所示实施例中,0.15≤a/b≤0.95。再例如,在图5所示实施例中,1.05≤a/b≤2。In order to better optimize the air intake conditions of the fan 2, reduce the flow separation of the internal air flow of the fan 2, improve the aerodynamic performance of the fan 2, and reduce the vortex noise and discrete noise of the fan 2, some embodiments set the relationship between a and b to 0.15 ≤a/b≤2. For example, in the embodiment shown in FIG. 4, 0.15≤a/b≤0.95. For another example, in the embodiment shown in FIG. 5, 1.05≤a/b≤2.
如图6所示,在该实施例中,第一导流部11和第二导流部12的截面型线不再关于基准线1c对称,而是第一导流部11的截面型线呈马鞍形曲线,第二导流部12的截面型线呈圆弧形曲线。As shown in FIG. 6, in this embodiment, the cross-sectional profile lines of the first air guiding part 11 and the second air guiding part 12 are no longer symmetrical with respect to the reference line 1c, but the cross-sectional profile lines of the first air guiding part 11 are A saddle-shaped curve, and the cross-sectional profile of the second diversion portion 12 is a circular arc-shaped curve.
图6所示导流器1是在图3所示半圆形导流器1基础上的改进,其适用于图3所示导流器1对应的风机2,尤其适用于
Figure PCTCN2020130044-appb-000003
为9-15和/或进风口直径比图3实施例对应风机小15%-25%的风机2,例如,若图3所示半圆形导流器的进风口直径(对应图2中所标示的D)为108mm,则图6所示马鞍形导流器的进风口直径为108*75%mm~108*85%mm,即81-91.8mm。
The deflector 1 shown in Fig. 6 is an improvement on the basis of the semicircular deflector 1 shown in Fig. 3, which is suitable for the fan 2 corresponding to the deflector 1 shown in Fig. 3, and is especially suitable for
Figure PCTCN2020130044-appb-000003
For example, if the diameter of the air inlet of the semi-circular deflector shown in Figure 3 (corresponding to the diameter of the air inlet of the semi-circular deflector shown in Figure 3, the diameter of the air inlet is 15%-25% smaller than the corresponding fan in the embodiment of Figure 3) The marked D) is 108mm, then the diameter of the air inlet of the saddle-shaped deflector shown in Fig. 6 is 108*75%mm~108*85%mm, that is, 81-91.8mm.
将第一导流部11的截面型线设置为马鞍形,与第一导流部11截面型线呈圆弧形的情况相比,由于马鞍形相对于圆弧形具有更大的倾斜度,在相同出口面积(出口1b的面积)的情况下,第一导流部11的截面型线为马鞍形时,入口面积(入口1a的面积)更大,因此,更有利于导流器1外部气流的导入,其中,不仅有利于增加进风量,同时还有利于增大气流流经导流器2时的流速,并且也有利于防止气流在导流器1内壁面堆积,降低涡区形成风险,从而更有利于改善风机2的进风条件,提高风机2的风噪比。The cross-sectional profile of the first air guiding portion 11 is set to a saddle shape. Compared with the case where the cross-sectional profile of the first air guiding portion 11 is in a circular arc shape, since the saddle shape has a greater inclination relative to the circular arc shape, the In the case of the same outlet area (the area of the outlet 1b), when the cross-sectional profile of the first guide portion 11 is saddle-shaped, the inlet area (the area of the inlet 1a) is larger, which is more conducive to the airflow outside the deflector 1 The introduction of, which not only helps to increase the air intake, but also helps to increase the flow rate of the airflow when passing through the deflector 2, and also helps prevent the airflow from accumulating on the inner wall of the deflector 1 and reduce the risk of vortex formation. This is more conducive to improving the air inlet conditions of the fan 2 and increasing the wind-to-noise ratio of the fan 2.
在本公开中,翻边部1e结构形式并不局限于图3-6所示。以下仅列举其他可行实施例中的一部分。In the present disclosure, the structural form of the flanging portion 1e is not limited to those shown in FIGS. 3-6. The following lists only a part of other feasible embodiments.
例如,作为图3所示实施例的变型例,第二导流部12的截面型线不再为1/4圆弧,而是短于1/4圆弧,此时,翻边部1e不再为半圆弧形,其周长L不再为等半径整圆周长的0.5倍,而是大于等半径整圆周长的0.25倍,并小于等半径整圆周长的0.5倍。For example, as a modified example of the embodiment shown in FIG. 3, the cross-sectional profile of the second guide portion 12 is no longer 1/4 arc, but shorter than 1/4 arc. At this time, the flange portion 1e is not It is a semi-circular arc again, and its circumference L is no longer 0.5 times the entire circumference of the same radius, but is greater than 0.25 times the entire circumference of the same radius, and less than 0.5 times the entire circumference of the same radius.
再例如,作为图4所示实施例的变型例,第一导流部11和第二导流部12的截面型线不再为同规格的椭圆弧形曲线,而是变为第二轴长度不同的椭圆弧形曲线,此时,若第一导流部11的第二轴长度为b1,第二导流部12的长度为b2,则翻边部1e的垂直于轴线1d 的尺寸即为
Figure PCTCN2020130044-appb-000004
For another example, as a modified example of the embodiment shown in FIG. 4, the cross-sectional profile lines of the first air guide portion 11 and the second air guide portion 12 are no longer elliptical arc curves of the same specification, but become the second axis length. Different elliptical arc curves. At this time, if the length of the second axis of the first guide portion 11 is b1 and the length of the second guide portion 12 is b2, then the dimension of the flange portion 1e perpendicular to the axis 1d is
Figure PCTCN2020130044-appb-000004
又例如,另一些实施例中,第一导流部11和第二导流部12的截面型线呈关于基准线1c对称的抛物线形,翻边部1e的截面型线呈半抛物线形,用公式表示为y=kx 2+n,k<0,或者,第一导流部11和第二导流部12的截面呈关于基准线1c非对称的抛物线形。将第一导流部11设置为抛物线形,有利于减少气流在轮毂附近的堆积,降低噪声,改善气体流动顺畅性,并能够更灵活地适应不同的进气条件。 For another example, in some other embodiments, the cross-sectional profile lines of the first diversion portion 11 and the second diversion portion 12 are parabolic symmetrical with respect to the reference line 1c, and the cross-sectional profile of the flanging portion 1e is semi-parabolic. The formula is expressed as y=kx 2 +n, k<0, or the cross-sections of the first air guiding portion 11 and the second air guiding portion 12 are parabolic asymmetric with respect to the reference line 1c. Arranging the first guide portion 11 in a parabolic shape is beneficial to reduce the accumulation of airflow near the hub, reduce noise, improve the smoothness of air flow, and be able to adapt to different intake conditions more flexibly.
以上所述仅为本公开的示例性实施例,并不用以限制本公开,凡在本公开的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本公开的保护范围之内。The above are only exemplary embodiments of the present disclosure and are not intended to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection of the present disclosure. Within range.

Claims (14)

  1. 一种导流器(1),包括:A deflector (1), including:
    第一导流部(11),具有导流腔,所述导流腔具有轴线(1d)及沿着所述轴线(1d)位于所述第一导流部(11)两端的入口(1a)和出口(1b);和The first guide portion (11) has a guide cavity, the guide cavity has an axis (1d) and inlets (1a) located at both ends of the first guide portion (11) along the axis (1d) And exit (1b); and
    第二导流部(12),连接于所述入口(1a)外缘并沿着由所述入口(1a)向所述出口(1b)的方向延伸,使得所述第一导流部(11)与所述第二导流部(12)连接形成翻边部(1e);The second guide portion (12) is connected to the outer edge of the inlet (1a) and extends along the direction from the inlet (1a) to the outlet (1b), so that the first guide portion (11 ) Is connected with the second guide portion (12) to form a flanging portion (1e);
    其中,所述翻边部(1e)的截面型线呈曲线形,所述截面为沿着所述轴线(1d)所在的平面剖切得到的截面。Wherein, the cross-sectional profile of the flanging portion (1e) is curvilinear, and the cross-section is a cross-section cut along the plane where the axis (1d) is located.
  2. 根据权利要求1所述的导流器(1),其中,所述第一导流部(11)和/或所述第二导流部(12)的截面型线呈弧形、抛物线形或马鞍形。The deflector (1) according to claim 1, wherein the cross-sectional profile of the first deflector (11) and/or the second deflector (12) is arc, parabolic or Saddle shape.
  3. 根据权利要求1所述的导流器(1),其中,所述第一导流部(11)的截面型线和/或所述第二导流部(12)的截面型线呈半径为r的圆弧形,所述第一导流部(11)的出口(1b)直径为D,r与D之间的关系为10<D/2r≤16.67;或者,所述第一导流部(11)的截面型线和/或所述第二导流部(12)的截面型线呈第一轴长为2a和第二轴长为b的椭圆弧形,所述第一轴和所述第二轴分别为长轴和短轴中的一个和另一个,a与b之间的关系为0.15≤a/b≤2。The deflector (1) according to claim 1, wherein the cross-sectional profile of the first deflector (11) and/or the cross-sectional profile of the second deflector (12) has a radius of The arc shape of r, the diameter of the outlet (1b) of the first guide portion (11) is D, and the relationship between r and D is 10<D/2r≤16.67; or, the first guide portion The cross-sectional profile line of (11) and/or the cross-sectional profile line of the second guide portion (12) is an elliptical arc with a first axis length of 2a and a second axis length of b. The second axis is one and the other of the long axis and the short axis, respectively, and the relationship between a and b is 0.15≤a/b≤2.
  4. 根据权利要求3所述的导流器(1),其中,a与b之间的关系为0.15≤a/b≤0.95或1.05≤a/b≤2。The deflector (1) according to claim 3, wherein the relationship between a and b is 0.15≤a/b≤0.95 or 1.05≤a/b≤2.
  5. 根据权利要求1所述的导流器(1),其中,所述第一导流部(11)的截面型线和所述第二导流部(12)的截面型线关于基准线(1c)对称或非对称,所述基准线(1c)为穿过所述第一导流部(11)和所述第二导流部(12)连接处并平行于所述轴线(1d)的直线。The deflector (1) according to claim 1, wherein the cross-sectional profile of the first deflector (11) and the cross-sectional profile of the second deflector (12) are relative to the reference line (1c). ) Symmetrical or asymmetrical, the reference line (1c) is a straight line passing through the connection of the first guide portion (11) and the second guide portion (12) and parallel to the axis (1d) .
  6. 根据权利要求1-5任一所述的导流器(1),其中,所述翻边部(1e)的截面型线呈圆弧形、椭圆弧形、抛物线形或马鞍形。The deflector (1) according to any one of claims 1-5, wherein the cross-sectional profile of the flanging portion (1e) is in the shape of a circular arc, an elliptical arc, a parabola or a saddle shape.
  7. 根据权利要求6所述的导流器(1),其中,所述翻边部(1e)的截面型线呈圆弧形,所述翻边部(1e)的弧长大于或等于等半径整圆周长的0.25倍,并小于或等于等半径整圆周长的0.5倍;或者,所述翻边部(1e)的截面型线呈椭圆弧形,所 述翻边部(1e)的弧长大于或等于同规格整椭圆周长的0.25倍,并小于或等于同规格整椭圆周长的0.5倍。The deflector (1) according to claim 6, wherein the cross-sectional profile of the flanging portion (1e) is in the shape of a circular arc, and the arc length of the flanging portion (1e) is greater than or equal to the same radius 0.25 times the circumference and less than or equal to 0.5 times the full circumference of the same radius; or, the cross-sectional profile of the flanging portion (1e) is an elliptical arc, and the arc length of the flanging portion (1e) is greater than Or equal to 0.25 times the circumference of the same size ellipse, and less than or equal to 0.5 times the circumference of the same size ellipse.
  8. 一种风机组件,包括风机(2),且还包括如权利要求1-7任一所述的导流器(1),所述导流器(1)设置于所述风机(2)的进风口。A fan assembly, comprising a fan (2), and further comprising the deflector (1) according to any one of claims 1-7, the deflector (1) is arranged at the inlet of the fan (2) tuyere.
  9. 根据权利要求8所述的风机组件,其中,所述第一导流部(11)的出口(1b)插入所述风机(2)的进风口;或者,所述第一导流部(11)的出口(1b)与所述风机(2)的进风口对接。The fan assembly according to claim 8, wherein the outlet (1b) of the first guide portion (11) is inserted into the air inlet of the fan (2); or, the first guide portion (11) The outlet (1b) of the fan is connected to the air inlet of the fan (2).
  10. 根据权利要求8所述的风机组件,其中,所述风机(2)为混流风机、轴流风机或离心风机。The fan assembly according to claim 8, wherein the fan (2) is a mixed flow fan, an axial flow fan or a centrifugal fan.
  11. 根据权利要求10所述的风机组件,其中,所述风机(2)为混流风机,其中,所述风机(2)包括6-20片动叶片;和/或,所述风机(2)包括6-25静叶片。The fan assembly according to claim 10, wherein the fan (2) is a mixed flow fan, wherein the fan (2) includes 6-20 moving blades; and/or, the fan (2) includes 6 -25 stationary blades.
  12. 根据权利要求11所述的风机组件,其中,所述风机(2)包括15片静叶片。The fan assembly according to claim 11, wherein the fan (2) includes 15 stationary blades.
  13. 一种电器,包括如权利要求8-12任一所述的风机组件。An electrical appliance comprising the fan assembly according to any one of claims 8-12.
  14. 根据权利要求13所述的电器,其中,所述电器为空调或抽油烟机。The electrical appliance according to claim 13, wherein the electrical appliance is an air conditioner or a range hood.
PCT/CN2020/130044 2020-01-20 2020-11-19 Flow guide device, fan assembly, and electric appliance WO2021147497A1 (en)

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CN111156179A (en) * 2020-01-20 2020-05-15 珠海格力电器股份有限公司 Despin structure, mixed flow fan assembly and air conditioner
CN115264599A (en) * 2022-08-04 2022-11-01 珠海格力电器股份有限公司 Guiding device, fan and air conditioner

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