WO2023226402A1 - 混流风机及风管机 - Google Patents

混流风机及风管机 Download PDF

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Publication number
WO2023226402A1
WO2023226402A1 PCT/CN2022/140620 CN2022140620W WO2023226402A1 WO 2023226402 A1 WO2023226402 A1 WO 2023226402A1 CN 2022140620 W CN2022140620 W CN 2022140620W WO 2023226402 A1 WO2023226402 A1 WO 2023226402A1
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point
coordinate value
axis coordinate
curve
air
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PCT/CN2022/140620
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English (en)
French (fr)
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丁绍军
池晓龙
张一帆
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珠海格力电器股份有限公司
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Publication of WO2023226402A1 publication Critical patent/WO2023226402A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans

Definitions

  • the present disclosure relates to the technical field of air conditioners, and specifically to a mixed-flow fan and an air duct fan.
  • the duct machine is a type of air conditioner.
  • some duct machines use the method of emitting cold air from the top and hot air from the bottom. This can achieve waterfall cooling and carpet-type heating.
  • the air outlet of the air duct fan is reversible.
  • the air duct fan with reversible air outlet usually uses a cross-flow fan or a centrifugal fan.
  • the wind direction cannot be reversible after reversal. , therefore, only at least two fans can be installed, one responsible for forward air discharge and one responsible for reverse air discharge. In this way, not only the pipe fan structure will be larger, but also the cost will be higher.
  • the fan In order to reduce costs, the fan needs to be smaller, and the mixed-flow fan is a fan between the axial flow fan and the centrifugal fan.
  • the impeller of the mixed-flow fan allows the air to move both centrifugally and axially, and the airflow movement in the volute is mixed. It combines two forms of motion, axial flow and centrifugal flow, so it is called "mixed flow”.
  • the mixed-flow fan can not only make the volume smaller, but also ensure the direction and pressure of the air flow.
  • the air duct in the volute plays a very critical role.
  • the space for setting up air ducts in mixed-flow fans in related technologies is very limited. How to set up air ducts under the premise of size restrictions? , optimizing the structure of the air duct, effectively ensuring the flow direction and wind pressure of the air flow, and improving the air supply efficiency of the mixed flow fan are issues that need to be solved urgently in this field.
  • the present disclosure relates to a mixed-flow fan and an air duct machine, which are used to alleviate the problem of limited air supply effect of the mixed-flow fan due to volume limitations.
  • a mixed-flow fan including: an outer shell provided with an air inlet and an air outlet; an inner shell provided in the outer shell, and a communication between the outer shell and the inner shell is formed.
  • points P1 and P5 are the end points of the two ends of the first profile line
  • P3 is the inflection point of the first profile line
  • P3 divides the first profile line into a first curve and a second curve
  • P2 is the The curvature control point of the first curve and P4 are the curvature control points of the second curve
  • P1x represents the x-axis coordinate value of point P1
  • P1y represents the y-axis coordinate value of point P1
  • P2x represents the x-axis coordinate value of point P2
  • P3x represents the x-axis coordinate value of point P3,
  • P3y represents the y-axis coordinate value of point P3
  • P4x represents the x-axis coordinate value of point P4, and P4y represents the y-axis coordinate value of point P4
  • P5x represents the x-axis coordinate value of point P5, and P5y represents the y-axis coordinate value of point P5;
  • the inner wall surface of the housing forms a second flow guide surface
  • the formula of the second profile of the second flow guide surface is:
  • points P8 and P12 are the end points of the two ends of the second profile line
  • P10 is the inflection point of the second profile line
  • P10 divides the second profile line into a third curve and a fourth curve
  • P9 is the The curvature control point of the third curve
  • P11 is the curvature control point of the fourth curve
  • P8x represents the x-axis coordinate value of point P8
  • P8y represents the y-axis coordinate value of point P8
  • P9x represents the x-axis coordinate value of point P9
  • P9y represents the y-axis coordinate value of point P9
  • P10x represents the x-axis coordinate value of point P10
  • P10y represents the y-axis coordinate value of point P10
  • P11x represents the x-axis coordinate value of point P11
  • P11y represents the y-axis coordinate value of point P11
  • P12x represents the x-axis coordinate value of point P12
  • P12y represents the
  • the air duct includes a first area in the direction from the air inlet to the air outlet; the portion of the first guide surface corresponding to the first curve is located on the first In the region, the portion of the second flow guide surface corresponding to the third curve is located in the first region, and the first region is used to convert the force driving the air flow into the dynamic pressure of the air flow.
  • the air duct further includes a second area located between the first area and the air outlet; the first guide surface corresponds to the second curve A portion of the second flow guide surface corresponding to the fourth curve is located in the second area.
  • the second area is used to despin the air flow and reduce the dynamic pressure of the air flow. converted into static pressure.
  • the mixed-flow fan further includes: a current collecting part having a collecting channel connected with the air duct, and the current collecting part is connected with the housing.
  • the formula of the third profile of the inner wall of the collecting channel is:
  • points P6 and P8 are the end points of both ends of the third profile line, and P7 is the curvature control point of the third profile line;
  • P6x represents the x-axis coordinate value of point P6, and
  • P6y represents the y-axis coordinate value of point P6.
  • P7x represents the x-axis coordinate value of point P7
  • P7y represents the y-axis coordinate value of point P7
  • P8x represents the x-axis coordinate value of point P8, P8y represents the y-axis coordinate value of point P8;
  • the value range of t is 0 ⁇ t ⁇ 1.
  • P6x ⁇ P8x
  • P8y P6y
  • an air duct fan including the above-mentioned mixed-flow fan.
  • the mixed flow fan of the present disclosure can effectively increase the dynamic pressure of the air flow in the air duct by improving the profile of the first flow guide surface, and better convert the dynamic pressure into static pressure, thereby increasing the air output, thereby improving the performance of the mixed flow fan. .
  • Figure 1 is a schematic structural diagram of a mixed-flow fan according to an embodiment of the present disclosure
  • Figure 2 is a schematic diagram of the internal profile of the air duct of the mixed-flow fan according to an embodiment of the present disclosure
  • a mixed flow fan which includes an outer shell 10, an inner shell 20 and an impeller.
  • the outer shell 10 is provided with an air inlet 11 and an air outlet 12;
  • the inner shell 20 is provided in the outer shell 10, and the outer shell 10 is provided with an air inlet 11 and an air outlet 12.
  • An air duct 13 connecting the air inlet 11 and the air outlet 12 is formed between the impeller 10 and the inner shell 20;
  • the hub 30 of the impeller is rotatably arranged on the inner shell 20, and the outer surface of the hub 30 is connected with the outer surface of the inner shell 20 to form a third A guide surface 40, the formula of the first profile line 41 of the first guide surface 40 is:
  • points P1 and P5 are the end points of both ends of the first profile line 41
  • P3 is the inflection point of the first profile line 41
  • P3 divides the first profile line 41 into a first curve and a second curve
  • P2 is the bend of the first curve.
  • P4 is the curvature control point of the second curve
  • P1x represents the x-axis coordinate value of point P1
  • P1y represents the y-axis coordinate value of point P1
  • P2x represents the x-axis coordinate value of point P2, and P2y represents the coordinate value of point P2
  • P3x represents the x-axis coordinate value of the P3 point
  • P3y represents the y-axis coordinate value of the P3 point
  • P4x represents the x-axis coordinate value of the P4 point
  • P4y represents the y-axis coordinate value of the P4 point
  • P5x represents the P5 point x-axis coordinate value
  • P5y represents the y-axis coordinate value of point P5
  • the value range of t is 0 ⁇ t ⁇ 1.
  • the mixed flow fan of the present disclosure can effectively increase the dynamic pressure of the air flow in the air duct 13 by improving the profile of the first air guide surface 40, and better convert the dynamic pressure into static pressure, increase the air output, and thereby improve the mixed flow. Fan performance.
  • the intersection line between the outer surface of the hub 30 and the cross-section and the intersection line between the outer surface of the inner shell 20 and the cross-section form the first profile line 41 of the first guide surface 40 .
  • the hub 30 and the inner shell 20 are orthogonally projected onto the projection plane where the impeller shaft is located, and the projected outer contour is the first profile line 41 of the first guide surface 40 .
  • t is a known range independent variable unique to the above curve. Its range is between 0 ⁇ t ⁇ 1. Only when the value of t is completely within this range can the formula draw a complete curve. .
  • P1x ⁇ P3x ⁇ P5x, P1y ⁇ P5y ⁇ P3y By setting P1x ⁇ P3x ⁇ P5x and P1y ⁇ P5y ⁇ P3y, the first profile line 41 of the first guide surface 40 can be made smoother, thereby reducing the flow channel resistance and improving the overall performance of the fan.
  • the inner wall surface of the housing 10 forms the second flow guide surface 50, and the formula of the second profile line 51 of the second flow guide surface 50 is:
  • points P8 and P12 are the end points of the two ends of the second profile line 51
  • P10 is the inflection point of the second profile line 51
  • P10 divides the second profile line 51 into a third curve and a fourth curve
  • P9 is the bend of the third curve.
  • P11 is the curvature control point of the fourth curve;
  • P8x represents the x-axis coordinate value of P8 point, P8y represents the y-axis coordinate value of P8 point;
  • P9x represents the x-axis coordinate value of P9 point, P9y represents the Y-axis coordinate value;
  • P10x represents the x-axis coordinate value of P10 point, P10y represents the y-axis coordinate value of P10 point;
  • P11x represents the x-axis coordinate value of P11 point, P11y represents the y-axis coordinate value of P11 point;
  • P12x represents the P12 point The x-axis coordinate value, P12y represents the y-axis coordinate value of point P12; the value range of t is 0 ⁇ t ⁇ 1.
  • a cross section is taken along the plane where the impeller axis is located, and the intersection line between the inner wall surface of the casing 10 and the cross section forms the second profile line 51 of the second guide surface 50 .
  • the casing 10 is orthogonally projected onto the projection plane where the impeller shaft is located, and the projected inner contour line is the second profile line 51 of the second guide surface 50 .
  • t is a known range independent variable unique to the above curve. Its range is between 0 ⁇ t ⁇ 1. Only when the value of t is completely within this range can the formula draw a complete curve. .
  • P8x ⁇ P10x ⁇ P12x, P8y ⁇ P10y can make the second profile line 51 of the second flow guide surface 50 smoother, thereby reducing the flow channel resistance and improving the overall performance of the fan.
  • the air duct 13 includes a first area 131; the portion of the first guide surface 40 corresponding to the first curve is located in the first area 131, and the second guide surface 50 corresponds to the third curve. is located in the first area 131, which is used to convert the force driving the air flow into the dynamic pressure of the air flow. That is to say, the first curve and the third curve segment constitute the first area 131, and the first area 131 is the internal flow area of the moving blade.
  • This area is the work area of the fan, and the air flow can be introduced in an axial flow manner, and the air flow can be introduced in an axial flow manner. It is thrown out in a centrifugal manner. In this way, it can not only ensure the air volume of the fan, but also ensure the pressure carrying capacity of the fan.
  • the air duct 13 also includes a second area 132, which is located between the first area 131 and the air outlet 12; the portion of the first guide surface 40 corresponding to the second curve is located in the second area 132, and the second guide surface
  • the part 50 corresponding to the fourth curve is located in the second area 132, which is used to racemize the air flow and convert the dynamic pressure of the air flow into static pressure. That is to say, the second curve and the fourth curve constitute the second area 132.
  • the second area 132 is the internal flow area between the raceway section and the guide vane.
  • the raceway can accept the high-speed airflow from the moving blade and guide it into
  • the guide vane area reduces the rotation speed of the airflow and converts it into static pressure for delivery.
  • the mixed-flow fan of the present disclosure passes through key nodes P1, P3, P5, P6, P7, P8, P9, P10, P11, and P12, and the internal flow path curve of the mixed-flow fan can be obtained according to the formula. Under the constraints of the internal flow channel, the fan can perfectly convert the dynamic pressure of the moving blades into static pressure, thus improving the performance of the fan.
  • this area is the work area of the fan.
  • the airflow enters in the form of axial flow and is thrown out in the form of centrifugation, which can not only ensure the air volume of the fan, but also ensure the The fan's pressure capacity, air volume and fan static pressure efficiency are the largest, and the air duct 13 can accept the high-speed airflow from the moving blades, guide it into the guide vane area, reduce the rotation speed of the airflow, and convert it into static pressure for delivery, so , the air volume and fan static pressure efficiency are the highest.
  • the mixed flow fan also includes a flow collecting part 60.
  • the flow collecting part 60 has a flow collecting channel 61 connected with the air duct 13, and the flow collecting part 60 is connected with the housing 10.
  • the formula of the third profile line 62 of the inner wall of the collecting channel 61 is:
  • points P6 and P8 are the end points of both ends of the third molded line 62, and P7 is the curvature control point of the third molded line 62;
  • P6x represents the x-axis coordinate value of point P6,
  • P6y represents the y-axis coordinate value of point P6;
  • P7x represents the x-axis coordinate value of point P7,
  • P7y represents the y-axis coordinate value of point P7;
  • P8x represents the x-axis coordinate value of point P8, and
  • P8y represents the y-axis coordinate value of point P8;
  • the value range of t is 0 ⁇ t ⁇ 1 .
  • a cross section is taken along the plane where the impeller axis is located, and the intersection between the inner wall surface of the collecting portion 60 and the cross section forms a third profile line 62 .
  • the current collecting portion 60 is orthogonally projected onto the projection plane where the impeller shaft is located, and the projected inner contour is the third mold line 62 .
  • t is a known range independent variable unique to the above curve. Its range is between 0 ⁇ t ⁇ 1. Only when the value of t is completely within this range can the formula draw a complete curve. . P6x ⁇ P8x ⁇ P10x ⁇ P12x, P8y ⁇ P6y ⁇ P10y.
  • an air duct fan including the above-mentioned mixed-flow fan.

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Abstract

一种混流风机及风管机，混流风机，包括：外壳（10），设置有进风口（11）和出风口（12）；内壳（20），设置在所述外壳（10）内，所述外壳（10）与所述内壳（20）之间形成连通所述进风口（11）与所述出风口（12）的风道（13）；叶轮，所述叶轮的轮毂（30）可转动地设置在所述内壳（20）上，所述轮毂（30）的外表面与所述内壳（20）的外表面相连形成第一导流面（40）。该混流风机通过对第一导流面（40）的型线进行改进，可以有效提升风道内气流的动压，并将动压更好地转化为静压，提高出风量，从而提升混流风机的性能。

Description

混流风机及风管机
相关申请的交叉引用
本公开是以CN申请号为202210584140.2，申请日为2022年5月27日的申请为 基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本申请中。
技术领域
本公开涉及空调机技术领域，具体涉及一种混流风机及风管机。
背景技术
风管机是空调的一种，为了提高舒适性，有些风管机采用上出冷风，下出热风的方式，这样可以实现瀑布式制冷和地毯式暖风，为了实现这种出风方式，需要风管机的出风可逆，在一些相关技术中，出风可逆的风管机通常采用贯流风机、离心风机，但是这种风机由于风机扇叶的设置方式的问题，反转后风向不能可逆，因此，只能在设置至少两个风机，一个负责正向出风，一个负责逆向出风，这样不仅管风机结构会更大，成本更高。
为了减小成本，需要将风机缩小，而混流风机是介于轴流风机和离心风机之间的风机，混流风机的叶轮让空气既做离心运动又做轴向运动，蜗壳内的气流运动混合了轴流与离心两种运动形式，所以叫“混流”。而且，混流风机不仅可以将体积做小，而且可以保证气流的流向和风压。
而为了保证气流的流向和风压，蜗壳内的风道起到了非常关键的作用，但是而由于体积限制，相关技术中的混流风机内设置风道的空间十分有限，如何在尺寸限制的前提下，优化风道的结构，有效保证气流的流向和风压，提高混流风机的送风效率，是本领域亟待解决的问题。
发明内容
本公开涉及一种混流风机及风管机，用于缓解由于体积限制，混流风机送风效果有限的问题。
根据本公开的一个方面，公开了一种混流风机，包括：外壳，设置有进风口和出风口；内壳，设置在所述外壳内，所述外壳与所述内壳之间形成连通所述进风口与所 述出风口的风道；叶轮，所述叶轮的轮毂可转动地设置在所述内壳上，所述轮毂的外表面与所述内壳的外表面相连形成第一导流面，所述第一导流面的第一型线的公式为：
Figure PCTCN2022140620-appb-000001
Figure PCTCN2022140620-appb-000002
其中，点P1和P5为所述第一型线两端的端点、P3为所述第一型线的拐点，P3将所述第一型线分为第一曲线和第二曲线，P2为所述第一曲线的弯曲度控制点、P4为第二曲线的弯曲度控制点；P1x代表P1点的x轴坐标值，P1y代表P1点的y轴坐标值；P2x代表P2点的x轴坐标值，P2y代表P2点的y轴坐标值；P3x代表P3点的x轴坐标值，P3y代表P3点的y轴坐标值；P4x代表P4点的x轴坐标值，P4y代表P4点的y轴坐标值；P5x代表P5点的x轴坐标值，P5y代表P5点的y轴坐标值；t的取值范围是0≤t≤1。
在一些实施例中，P1x<P3x<P5x，P1y<P5y<P3y。
在一些实施例中，所述外壳的内壁面形成第二导流面，所述第二导流面的第二型线的公式为：
Figure PCTCN2022140620-appb-000003
Figure PCTCN2022140620-appb-000004
其中，点P8和P12为所述第二型线两端的端点、P10为所述第二型线的拐点，P10将所述第二型线分为第三曲线和第四曲线，P9为所述第三曲线的弯曲度控制点、P11为第四曲线的弯曲度控制点；P8x代表P8点的x轴坐标值，P8y代表P8点的y轴坐标值；P9x代表P9点的x轴坐标值，P9y代表P9点的y轴坐标值；P10x代表P10点的x轴坐标值，P10y代表P10点的y轴坐标值；P11x代表P11点的x轴坐标值，P11y代表P11点的y轴坐标值；P12x代表P12点的x轴坐标值，P12y代表P12点的y轴坐标值；t的取值范围是0≤t≤1。
在一些实施例中，P8x<P10x<P12x，P8y<P10y。
在一些实施例中，在所述进风口至所述出风口的方向上，所述风道包括第一区域； 所述第一导流面对应所述第一曲线的部分位于所述第一区域内，所述第二导流面对应所述第三曲线的部分位于所述第一区域内，所述第一区域用于将驱动气流流动的力转化为气流的动压。
在一些实施例中，所述风道还包括第二区域，所述第二区域位于所述第一区域与所述出风口之间；所述第一导流面对应所述第二曲线的部分位于所述第二区域内，所述第二导流面对应所述第四曲线的部分位于所述第二区域内，所述第二区域用于对气流消旋并将气流的动压转化为静压。
在一些实施例中，所述混流风机还包括：集流部，所述集流部具有与所述风道连通的集流通道，所述集流部与所述外壳相连。
在一些实施例中，在所述进风口至所述出风口的方向上，所述集流通道的内壁的第三型线的公式为：
B x(t)＝(1-t) 2P6 x+2t(1-t)P7 x+t 2P8 x
B y(t)＝(1-t) 2P6 y+2t(1-t)P7 y+t 2P8 y
其中，点P6和P8为所述第三型线两端的端点、P7为所述第三型线的弯曲度控制点；P6x代表P6点的x轴坐标值，P6y代表P6点的y轴坐标值；P7x代表P7点的x轴坐标值，P7y代表P7点的y轴坐标值；P8x代表P8点的x轴坐标值，P8y代表P8点的y轴坐标值；t的取值范围是0≤t≤1。
在一些实施例中，P6x<P8x，P8y<P6y。
根据本公开的第二个方面，公开了一种风管机，包括上述的混流风机。
本公开的混流风机通过对第一导流面的型线进行改进，可以有效提升风道内气流的动压，并将动压更好地转化为静压，提高出风量，从而提升混流风机的性能。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本申请的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1是本公开实施例的混流风机的结构示意图；
图2是本公开实施例的混流风机的风道内部型线的示意图；
图例：10、外壳；11、进风口；12、出风口；13、风道；131、第一区域；132、 第二区域；20、内壳；30、轮毂；40、第一导流面；41、第一型线；50、第二导流面；51、第二型线；60、集流部；61、集流通道；62、第三型线。
具体实施方式
下面将结合本公开实施例中的附图，对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的一部分实施例，而不是全部的实施例。基于本公开的实施例，本领域普通技术人员在没有作出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。
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开保护范围的限制。
如图1和图2所示，本公开公开了一种混流风机，包括外壳10、内壳20和叶轮，外壳10设置有进风口11和出风口12；内壳20设置在外壳10内，外壳10与内壳20之间形成连通进风口11与出风口12的风道13；叶轮的轮毂30可转动地设置在内壳20上，轮毂30的外表面与内壳20的外表面相连形成第一导流面40，第一导流面40的第一型线41的公式为：
Figure PCTCN2022140620-appb-000005
Figure PCTCN2022140620-appb-000006
其中，点P1和P5为第一型线41两端的端点、P3为第一型线41的拐点，P3将第一型线41分为第一曲线和第二曲线，P2为第一曲线的弯曲度控制点、P4为第二曲线的弯曲度控制点；P1x代表P1点的x轴坐标值，P1y代表P1点的y轴坐标值；P2x代表P2点的x轴坐标值，P2y代表P2点的y轴坐标值；P3x代表P3点的x轴坐标值，P3y代表P3点的y轴坐标值；P4x代表P4点的x轴坐标值，P4y代表P4点的y轴坐标值；P5x代表P5点的x轴坐标值，P5y代表P5点的y轴坐标值；t的取值范围是0≤t≤1。
本公开的混流风机通过对第一导流面40的型线进行改进，可以有效提升风道13内气流的动压，并将动压更好地转化为静压，提高出风量，从而提升混流风机的性能。
需要说明的是，沿叶轮转轴所在平面做剖面，轮毂30的外表面与该剖面的交线、内壳20的外表面与该剖面的交线形成第一导流面40的第一型线41。或者，将轮毂30和内壳20分别向叶轮转轴所在的投影面进行正投影，得到投影的外轮廓线为第一导流面40的第一型线41。
还需要说明的是，t为上述曲线特有的一个已知范围自变量，它的范围是0≤t≤1之间，t取值只有完全处于该范围之间时，公式才能画出完整的曲线。
在一些实施例中，P1x<P3x<P5x，P1y<P5y<P3y。通过将P1x<P3x<P5x，P1y<P5y<P3y，可以使第一导流面40的第一型线41更加平滑，从而减少流道阻力，提高风机整体性能。
外壳10的内壁面形成第二导流面50，第二导流面50的第二型线51的公式为：
Figure PCTCN2022140620-appb-000007
Figure PCTCN2022140620-appb-000008
其中，点P8和P12为第二型线51两端的端点、P10为第二型线51的拐点，P10将第二型线51分为第三曲线和第四曲线，P9为第三曲线的弯曲度控制点、P11为第四曲线的弯曲度控制点；P8x代表P8点的x轴坐标值，P8y代表P8点的y轴坐标值；P9x代表P9点的x轴坐标值，P9y代表P9点的y轴坐标值；P10x代表P10点的x轴坐标值，P10y代表P10点的y轴坐标值；P11x代表P11点的x轴坐标值，P11y代表P11点的y轴坐标值；P12x代表P12点的x轴坐标值，P12y代表P12点的y轴坐标值；t的取值范围是0≤t≤1。
需要说明的是，沿叶轮转轴所在平面做剖面，外壳10的内壁面与该剖面的交线形成第二导流面50的第二型线51。或者，将外壳10向叶轮转轴所在的投影面进行正投影，得到投影的内轮廓线为第二导流面50的第二型线51。
还需要说明的是，t为上述曲线特有的一个已知范围自变量，它的范围是0≤t≤1之间，t取值只有完全处于该范围之间时，公式才能画出完整的曲线。
在一些实施例中，P8x<P10x<P12x，P8y<P10y。通过P8x<P10x<P12x， P8y<P10y可以使第二导流面50的第二型线51更加平滑，从而减少流道阻力，提高风机整体性能。
在进风口11至出风口12的方向上，风道13包括第一区域131；第一导流面40对应第一曲线的部分位于第一区域131内，第二导流面50对应第三曲线的部分位于第一区域131内，第一区域131用于将驱动气流流动的力转化为气流的动压。也就是说，第一曲线与第三曲线段构成了第一区域131，第一区域131为动叶的内部流域，该区域是风机的做功区域，可以将气流以轴流的方式引入，并以离心的形式甩出，如此一来，既能保证风机的风量，亦能保证风机的带压能力。
风道13还包括第二区域132，第二区域132位于第一区域131与出风口12之间；第一导流面40对应第二曲线的部分位于第二区域132内，第二导流面50对应第四曲线的部分位于第二区域132内，第二区域132用于对气流消旋并将气流的动压转化为静压。也就是说，第二曲线和第四曲线构成了第二区域132，第二区域132为消旋段与导叶的内部流域，消旋能够承接来自于动叶的高速气流，并将其引导进入导叶区域，降低气流的旋转速度，并转化为静压送出。
本公开的混流风机通过关键节点P1、P3、P5、P6、P7、P8、P9、P10、P11、P12，可依据公式获得混流风机的内部流道曲线。风机在内部流道的约束下，可以将动叶的动压完美的转化为静压，从而提升风机的性能。对本实施例的混流风机进行仿真试验，改变相邻关键点的连接形式，仿真结果如下：
关键点连接形式 转速(rpm) 风量(m 3/s) 风机静压效率
直线连接 2200 406 42.4％
公式曲线连接 2200 510 60.2％
根据仿真数据可知，当各个关键点依次采用公式曲线连接时，该区域是风机的做功区域，气流以轴流的方式进入，并以离心的形式甩出，既能保证风机的风量，亦能保证风机的带压能力风量和风机静压效率最大，而且风道13能够承接来自于动叶的高速气流，并将其引导进入导叶区域，降低气流的旋转速度，并转化为静压送出，因此，风量和风机静压效率最高。而当各个关键点依次采用直线连接时，气流阻力较大，而且消旋效果降低，使气流的动压不能充分转化为静压，导致风量和风机静压效率降低交底，达到不能使用的状态。
混流风机还包括集流部60，集流部60具有与风道13连通的集流通道61，集流 部60与外壳10相连。在进风口11至出风口12的方向上，集流通道61的内壁的第三型线62的公式为：
B x(t)＝(1-t) 2P6 x+2t(1-t)P7 x+t 2P8 x
B y(t)＝(1-t) 2P6 y+2t(1-t)P7 y+t 2P8 y
其中，点P6和P8为第三型线62两端的端点、P7为第三型线62的弯曲度控制点；P6x代表P6点的x轴坐标值，P6y代表P6点的y轴坐标值；P7x代表P7点的x轴坐标值，P7y代表P7点的y轴坐标值；P8x代表P8点的x轴坐标值，P8y代表P8点的y轴坐标值；t的取值范围是0≤t≤1。
需要说明的是，沿叶轮转轴所在平面做剖面，集流部60的内壁面与该剖面的交线形成第三型线62。或者，将集流部60向叶轮转轴所在的投影面进行正投影，得到投影的内轮廓线为第三型线62。
还需要说明的是，t为上述曲线特有的一个已知范围自变量，它的范围是0≤t≤1之间，t取值只有完全处于该范围之间时，公式才能画出完整的曲线。P6x<P8x<P10x<P12x，P8y<P6y<P10y。通过优化第三型线62，可以改善气流的进气条件，提升风机性能。
根据本公开的第二个方面，公开了一种风管机，包括上述的混流风机。
在本公开的描述中，需要理解的是，使用“第一”、“第二”、“第三”等词语来限定零部件，仅仅是为了便于对上述零部件进行区别，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。
另外，在没有明确否定的情况下，其中一个实施例的技术特征可以有益地与其他一个或多个实施例相互结合。
最后应当说明的是:以上实施例仅用以说明本公开的技术方案而非对其限制；尽管参照较佳实施例对本公开进行了详细的说明，所属领域的普通技术人员应当理解：依然可以对本公开的具体实施方式进行修改或者对部分技术特征进行等同替换；而不脱离本公开技术方案的精神，其均应涵盖在本公开请求保护的技术方案范围当中。

Claims (10)

  1. 一种混流风机，包括：
    外壳(10)，设置有进风口(11)和出风口(12)；
    内壳(20)，设置在所述外壳(10)内，所述外壳(10)与所述内壳(20)之间形成连通所述进风口(11)与所述出风口(12)的风道(13)；
    叶轮，所述叶轮的轮毂(30)可转动地设置在所述内壳(20)上，所述轮毂(30)的外表面与所述内壳(20)的外表面相连形成第一导流面(40)，所述第一导流面(40)的第一型线(41)的公式为：
    Figure PCTCN2022140620-appb-100001
    Figure PCTCN2022140620-appb-100002
    其中，点P1和P5为所述第一型线(41)两端的端点、P3为所述第一型线(41)的拐点，P3将所述第一型线(41)分为第一曲线和第二曲线，P2为所述第一曲线的弯曲度控制点、P4为第二曲线的弯曲度控制点；
    P1x代表P1点的x轴坐标值，P1y代表P1点的y轴坐标值；
    P2x代表P2点的x轴坐标值，P2y代表P2点的y轴坐标值；
    P3x代表P3点的x轴坐标值，P3y代表P3点的y轴坐标值；
    P4x代表P4点的x轴坐标值，P4y代表P4点的y轴坐标值；
    P5x代表P5点的x轴坐标值，P5y代表P5点的y轴坐标值；
    t的取值范围是0≤t≤1。
  2. 根据权利要求1所述的混流风机，其中
    P1x<P3x<P5x，P1y<P5y<P3y。
  3. 根据权利要求1或2所述的混流风机，其中所述外壳(10)的内壁面形成第二导流面(50)，所述第二导流面(50)的第二型线(51)的公式为：
    Figure PCTCN2022140620-appb-100003
    Figure PCTCN2022140620-appb-100004
    其中，点P8和P12为所述第二型线(51)两端的端点、P10为所述第二型线(51)的拐点，P10将所述第二型线(51)分为第三曲线和第四曲线，P9为所述第三曲线的弯曲度控制点、P11为第四曲线的弯曲度控制点；
    P8x代表P8点的x轴坐标值，P8y代表P8点的y轴坐标值；
    P9x代表P9点的x轴坐标值，P9y代表P9点的y轴坐标值；
    P10x代表P10点的x轴坐标值，P10y代表P10点的y轴坐标值；
    P11x代表P11点的x轴坐标值，P11y代表P11点的y轴坐标值；
    P12x代表P12点的x轴坐标值，P12y代表P12点的y轴坐标值；
    t的取值范围是0≤t≤1。
  4. 根据权利要求3所述的混流风机，其中P8x<P10x<P12x，P8y<P10y。
  5. 根据权利要求3或4所述的混流风机，其中在所述进风口(11)至所述出风口(12)的方向上，所述风道(13)包括第一区域(131)；
    所述第一导流面(40)对应所述第一曲线的部分位于所述第一区域(131)内，所述第二导流面(50)对应所述第三曲线的部分位于所述第一区域(131)内，所述第一区域(131)用于将驱动气流流动的力转化为气流的动压。
  6. 根据权利要求5所述的混流风机，其中所述风道(13)还包括第二区域(132)，所述第二区域(132)位于所述第一区域(131)与所述出风口(12)之间；
    所述第一导流面(40)对应所述第二曲线的部分位于所述第二区域(132)内，所述第二导流面(50)对应所述第四曲线的部分位于所述第二区域(132)内，所述第二区域(132)用于对气流消旋并将气流的动压转化为静压。
  7. 根据权利要求3至6任一项所述的混流风机，还包括：
    集流部(60)，所述集流部(60)具有与所述风道(13)连通的集流通道(61)，所述集流部(60)与所述外壳(10)相连。
  8. 根据权利要求7所述的混流风机，其中在所述进风口(11)至所述出风口(12)的方向上，所述集流通道(61)的内壁的第三型线(62)的公式为：
    B x(t)＝(1-t) 2P6 x+2t(1-t)P7 x+t 2P8 x
    B y(t)＝(1-t) 2P6 y+2t(1-t)P7 y+t 2P8 y
    其中，点P6和P8为所述第三型线(62)两端的端点、P7为所述第三型线(62)的弯曲度控制点；
    P6x代表P6点的x轴坐标值，P6y代表P6点的y轴坐标值；
    P7x代表P7点的x轴坐标值，P7y代表P7点的y轴坐标值；
    P8x代表P8点的x轴坐标值，P8y代表P8点的y轴坐标值；
    t的取值范围是0≤t≤1。
  9. 根据权利要求8所述的混流风机，其中P6x<P8x，P8y<P6y。
  10. 一种风管机，包括权利要求1至9中任一项所述的混流风机。
PCT/CN2022/140620 2022-05-27 2022-12-21 混流风机及风管机 WO2023226402A1 (zh)

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