WO2020134806A1 - Blade of integrated stove fan and integrated stove fan - Google Patents

Blade of integrated stove fan and integrated stove fan Download PDF

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Publication number
WO2020134806A1
WO2020134806A1 PCT/CN2019/121151 CN2019121151W WO2020134806A1 WO 2020134806 A1 WO2020134806 A1 WO 2020134806A1 CN 2019121151 W CN2019121151 W CN 2019121151W WO 2020134806 A1 WO2020134806 A1 WO 2020134806A1
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Prior art keywords
blade
main body
volute
integrated stove
teeth
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PCT/CN2019/121151
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French (fr)
Chinese (zh)
Inventor
张轩
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火星人厨具股份有限公司
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Publication of WO2020134806A1 publication Critical patent/WO2020134806A1/en

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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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • 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
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes

Definitions

  • the invention belongs to the technical field of kitchenware, and relates to an integrated stove, especially a blade of an integrated stove fan.
  • the invention also relates to an integrated stove fan.
  • Range hoods or integrated stoves have become common kitchen appliances in modern homes. With the continuous improvement of the quality of life, the indicators of their noise requirements have gradually increased.
  • the impeller is composed of several blades.
  • the existing blades are straight blades with circular arc plates. The leading and trailing edges of the blades are straight, which results in aerodynamic noise.
  • the purpose of the present invention is to address the above-mentioned problems in the existing technology, and proposes a blade of an integrated stove fan and an integrated stove fan.
  • the technical problem solved by the present invention is to improve the blade to reduce the aerodynamic noise during operation.
  • a blade of an integrated stove fan includes a main body in the form of an elongated sheet and fixed sheet portions at both ends of the main body, the main body is bent in an arc shape along the width direction, and one side of the main body in the width direction is The leading edge, the other side is the trailing edge, characterized in that a number of saw teeth are formed along the length of the body on the trailing edge of the body, and the tooth height of the teeth gradually increases from the middle teeth to the ends of the teeth.
  • the leading edge of the blade is the side where the fume is drawn in, and the trailing edge of the blade is the side where the fume is blown out.
  • the tooth surfaces on both sides of the saw tooth are flat surfaces
  • the tooth tops of the saw teeth are circular arc surfaces
  • the tooth surfaces on both sides of the saw tooth are tangent to the tooth tip portions of the saw teeth.
  • B 0.1R ⁇ 0.3R, where R is the radius of curvature of the main body.
  • both ends of the rear edge of the main body have reserved sections, a number of the saw teeth are located between the two reserved sections, the length of the reserved section is F, and F satisfies The following relationship: F ⁇ 3.5mm.
  • the blade trailing edge uses a sawtooth structure, which changes the original position of the blade trailing airflow vortex, reducing its interference with the active airflow, thereby reducing the aerodynamic noise when the fan works; the height of several sawtooth The end is distributed in a stepwise manner to the middle.
  • the blades exhibit a crescent-shaped air flow path in the overall distribution of the saw teeth, changing the stroke of the air flow at different positions on the overall blade, reducing the pressure impact of the blade front;
  • the larger serrations on both sides of the blade have a stable effect on the bending and shaping of the blade; the unfolded area of the blade is smaller, and the overall weight of the blade after the serration is opened is also smaller.
  • An integrated stove fan includes an air guide shell and an impeller fixed inside the air guide shell, the impeller includes a volute and a motor, and is characterized in that the impeller further includes several of the above claims 1 to 6 fixed on the volute
  • a plurality of the blades are fixed in the volute through a circumferential array of fixing pieces, the leading edge of the main body of the blade faces the inner side of the volute, and the trailing edge of the main body of the blade faces the outer side of the volute.
  • the leading edge of the blade is the side where the fume is sucked.
  • the fume is sucked from the middle of the volute. Therefore, the front edge of the blade faces the inside of the volute. Reduced its interference with the active airflow, thereby reducing the aerodynamic noise when the impeller is working.
  • the height of several saw teeth is distributed in a stepwise manner from both ends to the middle.
  • the blades show a crescent shape on the overall distribution of the saw teeth
  • the airflow path of the airflow changes the stroke of the airflow at different positions on the overall blade, reducing the pressure impact of the blade front and reducing the resistance of the blade during operation; on the other hand, the larger serrations on both sides of the blade are
  • the model has a stabilizing effect to ensure the overall stability of the impeller and enhance the stability of the impeller performance; the blade deployment area is smaller, and the overall weight of the blade after the serration is opened is also smaller, therefore reducing the quality of the volute after installing the blade and reducing the motor load , Help to improve the overall efficiency of the fan.
  • the middle part of the volute has a bowl-shaped mounting part, the motor is located in the mounting part, and a number of cooling windows are opened on the mounting part.
  • the cooling window can increase the air circulation around the motor during operation, which can realize the cooling of the motor and give the motor a normal and stable working environment.
  • the integrated stove fan has less running noise, enhances the stability of the impeller performance, and improves the advantages of the overall efficiency of the impeller.
  • Fig. 1 is a schematic view of the three-dimensional structure of the impeller.
  • Fig. 2 is a schematic diagram of a side view of a volute equipped with blades.
  • Fig. 3 is a schematic view of a front view of a volute equipped with blades.
  • Fig. 4 is a schematic view of the three-dimensional structure of the blade.
  • Fig. 5 is a schematic view of the side structure of the blade.
  • Fig. 6 is a schematic diagram of the structure after the blade is unfolded.
  • the integrated stove fan includes an air guide housing and an impeller fixed inside the air guide housing.
  • the impeller includes a volute 1 and a motor 2.
  • the middle of the volute 1 has a bowl-shaped mounting portion 11, and the motor 2 Located in the installation part 11, a number of cooling windows 12 are opened on the installation part 11.
  • the impeller further includes a plurality of blades 3 fixed on the volute 1, and the blades 3 include a main body 31 in the form of a long piece and fixed blade portions 32 at both ends of the main body 31.
  • the main body 31 is bent in an arc shape along the width direction, and several The blade 3 is fixed in the volute 1 by a circumferential array of fixing pieces 32.
  • the leading edge 313 of the main body 31 of the blade 3 faces the inside of the volute 1, and the rear edge 314 of the main body 31 of the blade 3 faces the outside of the volute 1.
  • the leading edge 313 of the main body 31 of the blade 3 is the side on which the fume is drawn in, and the rear edge 314 of the main body 31 of the blade 3 is the side on which the fume is blown out.
  • Both ends of the rear edge 314 of the main body 31 have reserved sections 312, and a number of saw teeth 311 are located between the two reserved sections 312, and the saw teeth 311 near the end of the main body 31 are connected to the reserved section 312.
  • one side of the main body 31 in the width direction is the leading edge 313, and the other side is the rear edge 314.
  • a number of saw teeth 311 are formed on the rear edge 314 of the main body 31 along the length of the main body 31
  • the tooth height of several saw teeth 311 gradually increases from the middle saw teeth 311 to the two ends of the saw teeth 311.
  • the tooth surfaces on both sides of the serration 311 are flat, and the tooth tops of the serration 311 are arc surfaces.
  • the tooth surfaces on both sides of the serration 311 are tangent to the tooth tops of the serration 311, and the adjacent two serrations 311 smoothly transition through the arc surface .
  • the length of the reserved section 312 is F, and F satisfies the following relationship: F ⁇ 3.5 mm.
  • the leading edge 313 of the blade 3 is the side where the fume is sucked in, and the fume is sucked from the middle of the volute 1 during operation, so the leading edge 313 of the blade 3 faces the inner side of the volute 1, and the trailing edge 314 adopts a sawtooth 311 structure to change
  • the original position of the airflow shedding vortex at the trailing edge 314 of the blade 3 reduces its interference with the active airflow, thereby reducing the aerodynamic noise during the operation of the impeller.
  • the height of several saw teeth 311 is distributed in a stepwise manner from both ends to the middle
  • the blade 3 exhibits a crescent-shaped air flow channel in the overall distribution of the saw teeth 311, changing the stroke of the air flow at different positions on the overall blade 3, reducing the pressure impact of the front edge 313 of the blade 3, and reducing the operation time of the blade 3
  • the resistance; on the other hand, the high serrations 311 located on both sides of the blade 3 have a stable effect on the bending profile of the blade 3, ensuring the overall stability of the impeller and enhancing the stability of the impeller performance; the expansion area of the blade 3 is smaller, After the serration 311 is opened, the overall weight of the blade 3 is also smaller. Therefore, the reduced mass of the volute 1 after installing the blade 3 reduces the load of the motor 2 and is beneficial to improve the overall efficiency of the fan.
  • the non-improved fan and the improved fan in this application use the same type of motor, and both parameters D and A are the same. It can be seen from the above test results that the noise of the integrated stove using the improved fan is reduced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Disclosed is an integrated stove fan, comprising an air-guiding housing and an impeller fixed to an inner side of the air-guiding housing, wherein the impeller comprises a volute (1) and an electric motor (2); the impeller further comprises a number of blades (3) fixed to the volute (1); the number of blades (3) are fixed inside the volute (1) in a circumferential array via a fixing sheet portion (32); a front edge (313) of a main body (31) of each blade (3) faces an inner side of the volute (1); a rear edge (314) of the main body (31) of the blade (3) faces an outer side of the volute (1); a number of saw teeth (311) are provided and formed on the rear edge (314) of the main body (31) of the blade (3) in a lengthwise direction of the main body (31); and the tooth height of the number of saw teeth (311) gradually increases from a saw tooth (311) in the middle to saw teeth (311) at two ends thereof.

Description

一种集成灶风机的叶片以及集成灶风机Blade of integrated stove fan and integrated stove fan 技术领域Technical field
本发明属于厨具技术领域，涉及一种集成灶，特别是一种集成灶风机的叶片，本发明还涉及一种集成灶风机。The invention belongs to the technical field of kitchenware, and relates to an integrated stove, especially a blade of an integrated stove fan. The invention also relates to an integrated stove fan.
背景技术Background technique
吸油烟机或集成灶已经作为现代家庭的常用的厨房电器，随着生活品质的不断提高，对其噪音要求的指标也逐渐上升。针对其内部风机可分为叶轮、驱动电机、蜗壳三大部分。叶轮由若干叶片组成，现有的叶片为圆弧板直叶片，叶片的前沿和后沿均为平直状，导致气动噪声较大。Range hoods or integrated stoves have become common kitchen appliances in modern homes. With the continuous improvement of the quality of life, the indicators of their noise requirements have gradually increased. For its internal fan, it can be divided into three parts: impeller, drive motor and volute. The impeller is composed of several blades. The existing blades are straight blades with circular arc plates. The leading and trailing edges of the blades are straight, which results in aerodynamic noise.
发明内容Summary of the invention
本发明的目的是针对现有的技术存在上述问题，提出了一种集成灶风机的叶片以及集成灶风机，本发明解决的技术问题是同对叶片的改进来实现运行时气动噪声的降低。The purpose of the present invention is to address the above-mentioned problems in the existing technology, and proposes a blade of an integrated stove fan and an integrated stove fan. The technical problem solved by the present invention is to improve the blade to reduce the aerodynamic noise during operation.
本发明的目的可通过下列技术方案来实现：The object of the present invention can be achieved by the following technical solutions:
一种集成灶风机的叶片，包括呈长条片状的主体和位于主体两端的固定片部，所述主体沿着宽度方向弯折呈圆弧形，所述主体在宽度方向上的一侧为前沿，另一侧为后沿，其特征在于，所述主体的后沿上沿着主体的长度方向开设形成有若干锯齿，若干所述锯齿的齿高自中部的锯齿向两端的锯齿逐渐增高。A blade of an integrated stove fan includes a main body in the form of an elongated sheet and fixed sheet portions at both ends of the main body, the main body is bent in an arc shape along the width direction, and one side of the main body in the width direction is The leading edge, the other side is the trailing edge, characterized in that a number of saw teeth are formed along the length of the body on the trailing edge of the body, and the tooth height of the teeth gradually increases from the middle teeth to the ends of the teeth.
叶片的前沿为油烟吸入的一侧，叶片的后沿为油烟吹出的一侧。The leading edge of the blade is the side where the fume is drawn in, and the trailing edge of the blade is the side where the fume is blown out.
在上述的集成灶风机的叶片中，所述锯齿的两侧齿面为平面，所述锯齿的齿顶部为圆弧面，所述锯齿的两侧齿面与锯齿的齿顶 部相切。In the blade of the integrated stove fan described above, the tooth surfaces on both sides of the saw tooth are flat surfaces, the tooth tops of the saw teeth are circular arc surfaces, and the tooth surfaces on both sides of the saw tooth are tangent to the tooth tip portions of the saw teeth.
在上述的集成灶风机的叶片中，相邻两个所述锯齿之间通过圆弧面平滑过渡。In the blade of the integrated stove fan described above, a smooth transition is made between two adjacent saw teeth through a circular arc surface.
在上述的集成灶风机的叶片中，自靠近主体端部的锯齿开始计算锯齿的具***置为n，其中对应第n个锯齿的高度为H n，H n满足如下关系式：H n＝S-0.2n(n∈N)，式中S为靠近主体端部的锯齿的高度，S满足如下关系式：S＝0.6B～1.5B，式中B为相邻两个所述锯齿之间的间距大小，B满足如下关系式：B＝0.1R～0.3R，其中R为主体的曲率半径。 In the blade of the integrated stove fan described above, the specific position of the saw tooth is calculated as n from the saw teeth near the end of the main body, where the height of the corresponding nth saw tooth is H n , and H n satisfies the following relationship: H n =S- 0.2n (n∈N), where S is the height of the saw teeth near the end of the body, and S satisfies the following relationship: S = 0.6B ~ 1.5B, where B is the distance between two adjacent saw teeth The size, B satisfies the following relationship: B = 0.1R ~ 0.3R, where R is the radius of curvature of the main body.
在上述的集成灶风机的叶片中，主体的曲率半径R满足如下关系式：R＝0.035D～0.125DIn the blade of the integrated stove fan described above, the curvature radius R of the main body satisfies the following relationship: R=0.035D～0.125D
在上述的集成灶风机的叶片中，所述主体的后沿的两端均具有预留段，若干所述锯齿位于两段预留段之间，所述预留段的长度为F，F满足如下关系式：F≥3.5mm。In the blade of the integrated stove fan mentioned above, both ends of the rear edge of the main body have reserved sections, a number of the saw teeth are located between the two reserved sections, the length of the reserved section is F, and F satisfies The following relationship: F≥3.5mm.
具体原理如下：叶片后沿采用锯齿结构，改变了叶片后沿气流脱落旋涡的原有位置，减少了其对主动气流的干扰，从而能降低风机工作时候的气动噪声；若干锯齿的高度向自两端向中部呈阶梯递减的方式分布，一方面让叶片在锯齿的整体分布上呈现出月牙形的气流通道，改变气流的在整体叶片上不同位置的行程，减少叶片前沿的压力冲击；另一方面，位于叶片两侧端的高度较大的锯齿，对于叶片弯曲压型有着稳固作用；叶片展开面积更小，开设锯齿后叶片的整体重量也更小。The specific principle is as follows: the blade trailing edge uses a sawtooth structure, which changes the original position of the blade trailing airflow vortex, reducing its interference with the active airflow, thereby reducing the aerodynamic noise when the fan works; the height of several sawtooth The end is distributed in a stepwise manner to the middle. On the one hand, the blades exhibit a crescent-shaped air flow path in the overall distribution of the saw teeth, changing the stroke of the air flow at different positions on the overall blade, reducing the pressure impact of the blade front; on the other hand The larger serrations on both sides of the blade have a stable effect on the bending and shaping of the blade; the unfolded area of the blade is smaller, and the overall weight of the blade after the serration is opened is also smaller.
一种集成灶风机，包括导风外壳和固定在导风外壳内侧的叶轮，所述叶轮包括蜗壳和电机，其特征在于，叶轮还包括固定在蜗壳上的若干上述权利要求1至6中任意一项中的叶片，若干所述叶片通过固定片部圆周阵列固定在蜗壳内，所述叶片的主体的前沿朝向蜗壳的内侧，所述叶片的主体的后沿朝向蜗壳的外侧。An integrated stove fan includes an air guide shell and an impeller fixed inside the air guide shell, the impeller includes a volute and a motor, and is characterized in that the impeller further includes several of the above claims 1 to 6 fixed on the volute In any one of the blades, a plurality of the blades are fixed in the volute through a circumferential array of fixing pieces, the leading edge of the main body of the blade faces the inner side of the volute, and the trailing edge of the main body of the blade faces the outer side of the volute.
叶片的前沿为油烟吸入的一侧，运行时油烟从蜗壳的中部被 吸入，因此叶片的前沿朝向蜗壳的内侧，后沿采用锯齿结构，改变了叶片后沿气流脱落旋涡的原有位置，减少了其对主动气流的干扰，从而降低了叶轮工作时候的气动噪声，若干锯齿的高度向自两端向中部呈阶梯递减的方式分布，一方面让叶片在锯齿的整体分布上呈现出月牙形的气流通道，改变气流的在整体叶片上不同位置的行程，减少叶片前沿的压力冲击，减小叶片运行时的阻力；另一方面，位于叶片两侧端的高度较大的锯齿，对于叶片弯曲压型有着稳固作用，保证叶轮整体的稳固性，增强叶轮性能的稳定性；叶片展开面积更小，开设锯齿后叶片的整体重量也更小，因此降低的安装叶片后蜗壳的质量，减少电机负荷，有利于提高风机整体效率。The leading edge of the blade is the side where the fume is sucked. During operation, the fume is sucked from the middle of the volute. Therefore, the front edge of the blade faces the inside of the volute. Reduced its interference with the active airflow, thereby reducing the aerodynamic noise when the impeller is working. The height of several saw teeth is distributed in a stepwise manner from both ends to the middle. On the one hand, the blades show a crescent shape on the overall distribution of the saw teeth The airflow path of the airflow changes the stroke of the airflow at different positions on the overall blade, reducing the pressure impact of the blade front and reducing the resistance of the blade during operation; on the other hand, the larger serrations on both sides of the blade are The model has a stabilizing effect to ensure the overall stability of the impeller and enhance the stability of the impeller performance; the blade deployment area is smaller, and the overall weight of the blade after the serration is opened is also smaller, therefore reducing the quality of the volute after installing the blade and reducing the motor load , Help to improve the overall efficiency of the fan.
在上述的集成灶风机中，蜗壳的直径为D，D的取值范围为D＝200～300mm；蜗壳的宽度为A，A的取值范围为A＝60～120mm。In the above-mentioned integrated stove fan, the diameter of the volute is D, and the value range of D is D=200-300mm; the width of the volute is A, and the value range of A is A=60-120mm.
在上述的集成灶风机中，所述蜗壳的中部具有呈碗状的安装部，所述电机位于安装部内，所述安装部上开设有若干降温窗口。降温窗口能在运行时增加电机周边的空气流通，能实现对电机的降温，给电机以正常稳定的工作环境。In the above-mentioned integrated stove fan, the middle part of the volute has a bowl-shaped mounting part, the motor is located in the mounting part, and a number of cooling windows are opened on the mounting part. The cooling window can increase the air circulation around the motor during operation, which can realize the cooling of the motor and give the motor a normal and stable working environment.
与现有技术相比，本集成灶风机具有运行的噪声更小，增强了叶轮性能的稳定性，提高了叶轮的整体效率的优点。Compared with the prior art, the integrated stove fan has less running noise, enhances the stability of the impeller performance, and improves the advantages of the overall efficiency of the impeller.
附图说明BRIEF DESCRIPTION
图1是本叶轮的立体结构示意图。Fig. 1 is a schematic view of the three-dimensional structure of the impeller.
图2是装有叶片的蜗壳的侧视结构示意图。Fig. 2 is a schematic diagram of a side view of a volute equipped with blades.
图3是装有叶片的蜗壳的主视结构示意图。Fig. 3 is a schematic view of a front view of a volute equipped with blades.
图4是叶片的立体结构示意图。Fig. 4 is a schematic view of the three-dimensional structure of the blade.
图5是叶片的侧视结构示意图。Fig. 5 is a schematic view of the side structure of the blade.
图6是叶片展开后的结构示意图。Fig. 6 is a schematic diagram of the structure after the blade is unfolded.
图中，1、蜗壳；11、安装部；12、降温窗口；2、电机；3、 叶片；31、主体；311、锯齿；312、预留段；313、前沿、314、后沿；32、固定片部。In the picture, 1. volute; 11. mounting part; 12. cooling window; 2. motor; 3. blade; 31; main body; 311, sawtooth; 312, reserved section; 313, leading edge, 314, trailing edge; 32 、Fixed film section.
具体实施方式detailed description
以下是本发明的具体实施例并结合附图，对本发明的技术方案作进一步的描述，但本发明并不限于这些实施例。The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.
如图1至图6所示，集成灶风机包括导风外壳和固定在导风外壳内侧的叶轮，叶轮包括蜗壳1和电机2，蜗壳1的中部具有呈碗状的安装部11，电机2位于安装部11内，安装部11上开设有若干降温窗口12。叶轮还包括固定在蜗壳1上的若干叶片3，叶片3包括呈长条片状的主体31和位于主体31两端的固定片部32，主体31沿着宽度方向弯折呈圆弧形，若干叶片3通过固定片部32圆周阵列固定在蜗壳1内，叶片3的主体31的前沿313朝向蜗壳1的内侧，叶片3的主体31的后沿314朝向蜗壳1的外侧。叶片3的主体31的前沿313为油烟吸入的一侧，叶片3的主体31的后沿314为油烟吹出的一侧。主体31的后沿314的两端均具有预留段312，若干锯齿311位于两段预留段312之间，靠近主体31端部的锯齿311与预留段312相接。As shown in FIGS. 1 to 6, the integrated stove fan includes an air guide housing and an impeller fixed inside the air guide housing. The impeller includes a volute 1 and a motor 2. The middle of the volute 1 has a bowl-shaped mounting portion 11, and the motor 2 Located in the installation part 11, a number of cooling windows 12 are opened on the installation part 11. The impeller further includes a plurality of blades 3 fixed on the volute 1, and the blades 3 include a main body 31 in the form of a long piece and fixed blade portions 32 at both ends of the main body 31. The main body 31 is bent in an arc shape along the width direction, and several The blade 3 is fixed in the volute 1 by a circumferential array of fixing pieces 32. The leading edge 313 of the main body 31 of the blade 3 faces the inside of the volute 1, and the rear edge 314 of the main body 31 of the blade 3 faces the outside of the volute 1. The leading edge 313 of the main body 31 of the blade 3 is the side on which the fume is drawn in, and the rear edge 314 of the main body 31 of the blade 3 is the side on which the fume is blown out. Both ends of the rear edge 314 of the main body 31 have reserved sections 312, and a number of saw teeth 311 are located between the two reserved sections 312, and the saw teeth 311 near the end of the main body 31 are connected to the reserved section 312.
如图4至图6所示，主体31在宽度方向上的一侧为前沿313，另一侧为后沿314，主体31的后沿314上沿着主体31的长度方向开设形成有若干锯齿311，若干锯齿311的齿高自中部的锯齿311向两端的锯齿311逐渐增高。锯齿311的两侧齿面为平面，锯齿311的齿顶部为圆弧面，锯齿311的两侧齿面与锯齿311的齿顶部相切，相邻两个锯齿311之间通过圆弧面平滑过渡。As shown in FIGS. 4-6, one side of the main body 31 in the width direction is the leading edge 313, and the other side is the rear edge 314. A number of saw teeth 311 are formed on the rear edge 314 of the main body 31 along the length of the main body 31 The tooth height of several saw teeth 311 gradually increases from the middle saw teeth 311 to the two ends of the saw teeth 311. The tooth surfaces on both sides of the serration 311 are flat, and the tooth tops of the serration 311 are arc surfaces. The tooth surfaces on both sides of the serration 311 are tangent to the tooth tops of the serration 311, and the adjacent two serrations 311 smoothly transition through the arc surface .
具体来说，自靠近主体31端部的锯齿311开始计算锯齿311的具***置为n，由于从主体31的两端的端部均可以开始计算，因此n的最大值为锯齿311总数的一半，其中对应第n个锯齿311的高度为H n，H n满足如下关系式：H n＝S-0.2n(n∈N)，式中N为 位于边缘的锯齿311到位于中部的锯齿311的最大个数，S为靠近主体31端部的锯齿311的高度，S满足如下关系式：S＝0.6B～1.5B，式中B为相邻两个锯齿311之间的间距大小，B满足如下关系式：B＝0.1R～0.3R，其中R为主体31的曲率半径。主体31的曲率半径R满足如下关系式：R＝0.035D～0.125D。预留段312的长度为F，F满足如下关系式：F≥3.5mm。蜗壳1的直径为D，D的取值范围为D＝200～300mm；蜗壳1的宽度为A，A的取值范围为A＝60～120mm。 Specifically, the specific position of the serration 311 from the serration 311 near the end of the main body 31 is n. Since the calculation can be started from both ends of the main body 31, the maximum value of n is half of the total number of the serrations 311, where The height of the corresponding nth serration 311 is H n , and H n satisfies the following relationship: H n =S-0.2n(n∈N), where N is the largest number of serrations 311 located at the edge to the serrations 311 located at the middle S, the height of the saw teeth 311 near the end of the main body 31, S satisfies the following relationship: S = 0.6B ~ 1.5B, where B is the distance between two adjacent teeth 311, B satisfies the following relationship : B = 0.1R to 0.3R, where R is the radius of curvature of the body 31. The radius of curvature R of the main body 31 satisfies the following relationship: R=0.035D to 0.125D. The length of the reserved section 312 is F, and F satisfies the following relationship: F ≥ 3.5 mm. The diameter of the volute 1 is D, and the value range of D is D=200-300mm; the width of the volute 1 is A, and the value range of A is A=60-120mm.
具体原理如下：叶片3的前沿313为油烟吸入的一侧，运行时油烟从蜗壳1的中部被吸入，因此叶片3的前沿313朝向蜗壳1的内侧，后沿314采用锯齿311结构，改变了叶片3后沿314气流脱落旋涡的原有位置，减少了其对主动气流的干扰，从而降低了叶轮工作时候的气动噪声，若干锯齿311的高度向自两端向中部呈阶梯递减的方式分布，一方面让叶片3在锯齿311的整体分布上呈现出月牙形的气流通道，改变气流的在整体叶片3上不同位置的行程，减少叶片3前沿313的压力冲击，减小叶片3运行时的阻力；另一方面，位于叶片3两侧端的高度较大的锯齿311，对于叶片3弯曲压型有着稳固作用，保证叶轮整体的稳固性，增强叶轮性能的稳定性；叶片3展开面积更小，开设锯齿311后叶片3的整体重量也更小，因此降低的安装叶片3后蜗壳1的质量，减少电机2负荷，有利于提高风机整体效率。The specific principle is as follows: the leading edge 313 of the blade 3 is the side where the fume is sucked in, and the fume is sucked from the middle of the volute 1 during operation, so the leading edge 313 of the blade 3 faces the inner side of the volute 1, and the trailing edge 314 adopts a sawtooth 311 structure to change The original position of the airflow shedding vortex at the trailing edge 314 of the blade 3 reduces its interference with the active airflow, thereby reducing the aerodynamic noise during the operation of the impeller. The height of several saw teeth 311 is distributed in a stepwise manner from both ends to the middle On the one hand, the blade 3 exhibits a crescent-shaped air flow channel in the overall distribution of the saw teeth 311, changing the stroke of the air flow at different positions on the overall blade 3, reducing the pressure impact of the front edge 313 of the blade 3, and reducing the operation time of the blade 3 The resistance; on the other hand, the high serrations 311 located on both sides of the blade 3 have a stable effect on the bending profile of the blade 3, ensuring the overall stability of the impeller and enhancing the stability of the impeller performance; the expansion area of the blade 3 is smaller, After the serration 311 is opened, the overall weight of the blade 3 is also smaller. Therefore, the reduced mass of the volute 1 after installing the blade 3 reduces the load of the motor 2 and is beneficial to improve the overall efficiency of the fan.
现给出一组优化后的具体实施例及试验结果：A set of optimized specific examples and test results are now given:
具体参数如下：D＝280mm；A＝100mm；F＝4.2mm；B＝6；R＝28；H n＝S-0.2n(n∈8)；S＝4。 The specific parameters are as follows: D=280mm; A=100mm; F=4.2mm; B=6; R=28; Hn =S-0.2n (n∈8); S=4.
实验对比数据Experimental comparison data
随机抽取5台同型号集成灶，进行数据取平均值Randomly select 5 integrated stoves of the same model and average the data
Figure PCTCN2019121151-appb-000001
Figure PCTCN2019121151-appb-000001
Figure PCTCN2019121151-appb-000002
Figure PCTCN2019121151-appb-000002
其中未改进风机和本申请中改进后的风机采用同样型号的电机，两者参数D和参数A均相同。由上试验结果可见，采用改进后风机的集成灶的噪音降低。Among them, the non-improved fan and the improved fan in this application use the same type of motor, and both parameters D and A are the same. It can be seen from the above test results that the noise of the integrated stove using the improved fan is reduced.
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。The specific embodiments described herein are merely illustrative of the spirit of the present invention. A person skilled in the art to which the present invention belongs can make various modifications or additions to the described specific embodiments or substitute in a similar manner, but it will not deviate from the spirit of the present invention or go beyond the definition of the appended claims Scope.

Claims (10)

  1. 一种集成灶风机的叶片，包括呈长条片状的主体和位于主体两端的固定片部，所述主体沿着宽度方向弯折呈圆弧形，所述主体在宽度方向上的一侧为前沿，另一侧为后沿，其特征在于，所述主体的后沿上沿着主体的长度方向开设形成有若干锯齿，若干所述锯齿的齿高自中部的锯齿向两端的锯齿逐渐增高。A blade of an integrated stove fan includes a main body in the form of an elongated sheet and fixed sheet portions at both ends of the main body, the main body is bent in an arc shape along the width direction, and one side of the main body in the width direction is The leading edge, the other side is the trailing edge, characterized in that a number of saw teeth are formed along the length of the body on the trailing edge of the body, and the tooth height of the teeth gradually increases from the middle teeth to the ends of the teeth.
  2. 根据权利要求1所述的集成灶风机的叶片，其特征在于，所述锯齿的两侧齿面为平面，所述锯齿的齿顶部为圆弧面，所述锯齿的两侧齿面与锯齿的齿顶部相切。The blade of an integrated stove fan according to claim 1, characterized in that the tooth surfaces on both sides of the saw tooth are flat surfaces, the tops of the teeth of the saw teeth are arc surfaces, and the tooth surfaces on both sides of the saw teeth are The tops of the teeth are tangent.
  3. 根据权利要求1所述的集成灶风机的叶片，其特征在于，相邻两个所述锯齿之间通过圆弧面平滑过渡。The blade of the integrated stove fan according to claim 1, wherein a smooth transition is made between two adjacent saw teeth through a circular arc surface.
  4. 根据权利要求1或2或3所述的集成灶风机的叶片，其特征在于，自靠近主体端部的锯齿开始计算锯齿的具***置为n，其中对应第n个锯齿的高度为H n，H n满足如下关系式：H n＝S-0.2n(n∈N)，式中S为靠近主体端部的锯齿的高度，S满足如下关系式：S＝0.6B～1.5B，式中B为相邻两个所述锯齿之间的间距大小，B满足如下关系式：B＝0.1R～0.3R，其中R为主体的曲率半径。 The blade of the integrated stove fan according to claim 1 or 2 or 3, wherein the specific position of the saw tooth is n from the saw teeth near the end of the main body, wherein the height of the corresponding nth saw tooth is H n , H n satisfies the following relationship: H n = S-0.2n (n∈N), where S is the height of the saw tooth near the end of the body, and S satisfies the following relationship: S = 0.6B to 1.5B, where B is For the distance between two adjacent saw teeth, B satisfies the following relationship: B = 0.1R ~ 0.3R, where R is the radius of curvature of the main body.
  5. [根据细则26改正13.03.2020]　
    根据权利要求4所述的集成灶风机的叶片，其特征在于，主体的曲率半径R满足如下关系式：R＝0.035D～0.125D。     [Corrected in accordance with Rule 26 13.03.2020]
    The blade of the integrated stove fan according to claim 4, wherein the radius of curvature R of the main body satisfies the following relationship: R = 0.035D to 0.125D.
  6. 根据权利要求1或2或3所述的集成灶风机的叶片，其特征在于，所述主体的后沿的两端均具有预留段，若干所述锯齿位于两段预留段之间，所述预留段的长度为F，F满足如下关系式：F≥3.5mm。The blade of an integrated stove fan according to claim 1 or 2 or 3, characterized in that both ends of the rear edge of the main body have reserved sections, and several of the saw teeth are located between the two reserved sections. The length of the reserved section is F, and F satisfies the following relationship: F≥3.5mm.
  7. 一种集成灶风机，包括导风外壳和固定在导风外壳内侧的叶轮，所述叶轮包括蜗壳和电机，其特征在于，叶轮还包括固定在蜗壳上的若干上述权利要求1至6中任意一项中的叶片，若干所述叶片通过固定片部圆周阵列固定在蜗壳内，所述叶片的主体的前沿朝向蜗壳的内侧，所述叶片的主体的后沿朝向蜗壳的外侧。An integrated stove fan includes an air guide shell and an impeller fixed inside the air guide shell, the impeller includes a volute and a motor, and is characterized in that the impeller further includes several of the above claims 1 to 6 fixed on the volute In any one of the blades, a plurality of the blades are fixed in the volute through a circumferential array of fixing pieces, the leading edge of the main body of the blade faces the inner side of the volute, and the trailing edge of the main body of the blade faces the outer side of the volute.
  8. 根据权利要求7所述的集成灶风机，其特征在于，蜗壳的直径为D，D的取值范围为D＝200～300mm。The integrated stove fan according to claim 7, wherein the diameter of the volute is D, and the value range of D is D=200-300mm.
  9. 根据权利要求7所述的集成灶风机，其特征在于，蜗壳的宽度为A，A的取值范围为A＝60～120mm。The integrated stove fan according to claim 7, wherein the width of the volute is A, and the value range of A is A=60-120mm.
  10. 根据权利要求7所述的集成灶风机，其特征在于，所述蜗壳的中部具有呈碗状的安装部，所述电机位于安装部内，所述安装部上开设有若干降温窗口。The integrated stove fan according to claim 7, characterized in that the middle part of the volute has a bowl-shaped mounting part, the motor is located in the mounting part, and a number of cooling windows are opened on the mounting part.
PCT/CN2019/121151 2018-12-27 2019-11-27 Blade of integrated stove fan and integrated stove fan WO2020134806A1 (en)

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