WO2016095838A1 - Fan housing - Google Patents

Fan housing Download PDF

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Publication number
WO2016095838A1
WO2016095838A1 PCT/CN2015/097810 CN2015097810W WO2016095838A1 WO 2016095838 A1 WO2016095838 A1 WO 2016095838A1 CN 2015097810 W CN2015097810 W CN 2015097810W WO 2016095838 A1 WO2016095838 A1 WO 2016095838A1
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Prior art keywords
fan casing
width
volute
fan
intake
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PCT/CN2015/097810
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French (fr)
Chinese (zh)
Inventor
狄义波
孙卫亮
靳杰
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特灵空调系统(中国)有限公司
特灵国际有限公司
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Priority to CN201420815353.2U priority Critical patent/CN204553343U/en
Priority to CN201420815353.2 priority
Application filed by 特灵空调系统(中国)有限公司, 特灵国际有限公司 filed Critical 特灵空调系统(中国)有限公司
Publication of WO2016095838A1 publication Critical patent/WO2016095838A1/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
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps

Abstract

A fan housing (10), comprising: an air intake volute housing (11) for air intake, a hollow wheel unit (14) provided at the center of the air intake volute housing (11), and a diffusion tube (12) connected to the air intake volute housing (11) and used for air outflow; and at least the width of the air intake volute housing (11) in the fan housing (10) is continuously variable. Compared to an air conditioning indoor unit employing a traditional fan housing, the air conditioning indoor unit employing said fan housing (10) effectively reduces rotational speed of the fan and noise.

Description

风机外壳Fan housing 技术领域Technical field
本实用新型涉及一种用于扩散空气的风机外壳,更具体地说,涉及一种使用在空调器室内机中的离心式风机。The utility model relates to a fan casing for diffusing air, and more particularly to a centrifugal fan used in an indoor unit of an air conditioner.
背景技术Background technique
多翼离心式风机广泛使用在可变冷却剂流动(VRF)产品、尤其是空调器的室内机中。它提供足够的空气以与盘管交换热量,然后对各种生活场所进行制冷或制热。这种风机体积小、风量大、压力高、噪音低,具有结构紧凑、安装方便的优点,因此尤其适用于噪音要求严、风量变化范围大的通风换气场所。Multi-blade centrifugal fans are widely used in variable coolant flow (VRF) products, especially in indoor units of air conditioners. It provides enough air to exchange heat with the coils and then cool or heat the various living places. The fan has the advantages of small volume, large air volume, high pressure, low noise, compact structure and convenient installation, so it is especially suitable for ventilation and ventilation places with strict noise requirements and large air volume variation.
图1示出了传统的离心式风机在空调器室内机中的配置情况,大容量的空调机或热泵通常需要在室内机中使用多于一个风机,以提供改善的气流流体流动特性。离心式风机一般包括风机外壳、叶轮、进风口和外转子电机等部件。在图1中可见,风机外壳的宽度W1是一个固定值。换句话说,风机外壳(尤其是其蜗壳部分)沿其长度方向或沿其旋转轴线方向具有恒定宽度W1。Figure 1 illustrates the configuration of a conventional centrifugal fan in an indoor unit of an air conditioner. A large capacity air conditioner or heat pump typically requires more than one fan to be used in an indoor unit to provide improved airflow fluid flow characteristics. Centrifugal fans generally include components such as a fan casing, an impeller, an air inlet, and an outer rotor motor. As can be seen in Figure 1, the width W1 of the fan casing is a fixed value. In other words, the fan casing (especially its volute portion) has a constant width W1 along its length or along its axis of rotation.
图2是风机外壳的宽度W1与盘管宽度W2的对比示意图。尽管图中仅示出了两个风机外壳,但其出口也只覆盖了盘管宽度W2的很小一部分。换句话说,如果用W1/W2的比值来代表风机出口区域与盘管上游区域的比率的话,显然该比率处于一个数值较小的范围内。这使得在风机横截面膨胀时的混合损失较大,且盘管上的空气流动速度分布不均匀,因此需要提供足够压力才能补偿上述损失。但是,这又会导致风机转速增加、噪音增大,无法满足使用要求。2 is a schematic view showing the comparison between the width W1 of the fan casing and the width W2 of the coil. Although only two fan casings are shown, the outlet only covers a small portion of the coil width W2. In other words, if the ratio of W1/W2 is used to represent the ratio of the fan outlet area to the upstream area of the coil, it is clear that the ratio is within a small range. This results in a large mixing loss when the cross section of the fan is expanded, and the air flow velocity distribution on the coil is not uniform, so it is necessary to provide sufficient pressure to compensate for the above loss. However, this in turn leads to an increase in the fan speed and an increase in noise, which cannot meet the requirements for use.
因此,目前需要设计一种改进的风机外壳,致使采用该改进的风机外壳的空调器室内机与采用传统的风机外壳的空调器室内机相比能够有效降低风机转速并降低噪音水平。Therefore, there is a need to design an improved fan casing such that the air conditioner indoor unit employing the improved fan casing can effectively reduce the fan speed and reduce the noise level as compared with the air conditioner indoor unit using the conventional fan casing.
实用新型内容Utility model content
本实用新型的目的在于提供一种改进的风机外壳,采用该改进的风机外壳的空调器室内机与采用传统的风机外壳的空调器室内机相比能够有效降低风机转速并降低噪音水平。 The object of the present invention is to provide an improved fan casing. The air conditioner indoor unit adopting the improved fan casing can effectively reduce the fan speed and reduce the noise level compared with the air conditioner indoor unit adopting the conventional fan casing.
本实用新型提供了一种风机外壳,包括:供气流进入的进气蜗壳,该进气蜗壳的中心设有中空轮部;以及扩散管,扩散管与进气蜗壳连接并供气流流出,其中,在风机外壳中至少进气蜗壳的宽度是连续变化的。The utility model provides a fan casing, comprising: an inlet volute for airflow entering, a hollow wheel portion at the center of the inlet volute; and a diffusion pipe, the diffusion pipe is connected with the inlet volute and the airflow flows out Wherein at least the width of the inlet volute is continuously varied in the fan casing.
在一个较佳实施例中,进气蜗壳的宽度可以随着其外周缘沿螺旋线方向延伸而逐渐增大。或者,进气蜗壳和扩散管的宽度可以随着其外周缘延伸均逐渐增大。在后一种情况下,风机外壳在第二位置处的宽度与风机外壳在第一位置处的宽度的比值d2/d1为1.05-1.30,其中,第一位置是进气蜗壳的起始位置,第二位置是进气蜗壳从第一位置开始沿螺旋线方向延伸360°之后所到达的位置。In a preferred embodiment, the width of the inlet volute may gradually increase as its outer circumference extends in the direction of the helix. Alternatively, the widths of the intake volute and the diffuser may gradually increase as their outer circumference extends. In the latter case, the ratio d2/d1 of the width of the fan casing at the second position to the width of the fan casing at the first position is 1.05-1.30, wherein the first position is the starting position of the intake volute The second position is a position reached after the intake volute extends 360° from the first position in the spiral direction.
此外,风机外壳在第三位置处的宽度与风机外壳在第二位置处的宽度的比值d3/d2为1.05-1.30,其中第三位置是扩散管的出口位置。Further, the ratio d3/d2 of the width of the fan casing at the third position to the width of the fan casing at the second position is 1.05-1.30, wherein the third position is the outlet position of the diffuser.
另外,风机外壳宽度以线性方式逐渐增加,并且进气蜗壳的外周缘延伸所沿的螺旋线与风机外壳的长度方向形成倾斜角α,其中,倾斜角α可以为5-30°。In addition, the width of the fan casing is gradually increased in a linear manner, and the spiral along which the outer periphery of the inlet volute extends forms an inclination angle α with the longitudinal direction of the fan casing, wherein the inclination angle α may be 5-30°.
另一方面,风机外壳形成C形喉部,该喉部在风机外壳的两侧位置具有第一半径R1,在风机外壳10的中间位置具有第二半径R2,其中,第二半径与第一半径的比值R2/R1可以为1.5-2.5。In another aspect, the fan casing forms a C-shaped throat having a first radius R1 at both sides of the fan casing and a second radius R2 at an intermediate position of the fan casing 10, wherein the second radius and the first radius The ratio R2/R1 can be 1.5-2.5.
在另一个较佳实施例中,进气蜗壳的外边缘可以倒角成进气蜗壳的中空轮部直径的1/8至1/10。In another preferred embodiment, the outer edge of the intake volute may be chamfered to 1/8 to 1/10 of the diameter of the hollow wheel portion of the intake volute.
在又一个较佳实施例中,扩散管的外周缘切向延伸的长度L可以为进气蜗壳的中空轮部直径的0.7至1.2倍。In still another preferred embodiment, the length L of the outer circumferential edge of the diffuser tube may be 0.7 to 1.2 times the diameter of the hollow wheel portion of the intake volute.
与传统的风机外壳相比,本实用新型的风机外壳具有以下优点:Compared with the conventional fan casing, the fan casing of the present invention has the following advantages:
由于风机外壳的至少进气蜗壳部分的宽度是连续增大的,因此导致风机蜗壳的出口面积增大,从而使风机外壳的宽度W1与盘管宽度W2的比率W1/W2增加,因此节省了更多动压。Since at least the width of the inlet volute portion of the fan casing is continuously increased, the outlet area of the fan volute is increased, thereby increasing the ratio W1/W2 of the width W1 of the fan casing to the width W2 of the coil, thereby saving More dynamic pressure.
另外,申请人经过多次实验将风机外壳的第一位置、第二位置和第三位置的宽度d1、d2和d3设计为d2/d1=1.05-1.30以及d3/d2=1.05-1.30。通过上述设计,可以在不导致气流分离的前提下,最大程度地优化气流在盘管附近的分配,并且使其在外壳出口处的平均速度和所产生的噪音最小化。In addition, the applicant has designed the widths d1, d2, and d3 of the first, second, and third positions of the fan casing to be d2/d1=1.05-1.30 and d3/d2=1.05-1.30 through a number of experiments. With the above design, the distribution of the gas flow in the vicinity of the coil can be optimized to the utmost without minimizing the flow separation, and the average speed and noise generated at the outlet of the casing can be minimized.
附图说明DRAWINGS
为了进一步说明本实用新型的风机外壳的结构及其技术效果,下面将结合附图 和具体实施方式对本实用新型进行详细说明,其中:In order to further explain the structure of the fan casing of the present invention and its technical effects, the following will be combined with the accompanying drawings. The present invention is described in detail with reference to specific embodiments, wherein:
图1示出了传统的离心式风机在空调器室内机中的配置;Figure 1 shows the configuration of a conventional centrifugal fan in an indoor unit of an air conditioner;
图2是图1的风机外壳的宽度与盘管宽度的对比示意图;Figure 2 is a schematic view showing the comparison between the width of the fan casing of Figure 1 and the width of the coil;
图3是本实用新型的风机外壳的主视图;Figure 3 is a front elevational view of the fan casing of the present invention;
图3a是沿图3中的A-A线截取的剖视图;Figure 3a is a cross-sectional view taken along line A-A of Figure 3;
图4是图3的风机外壳的俯视图;Figure 4 is a plan view of the fan casing of Figure 3;
图5是图3的风机外壳的左视图;Figure 5 is a left side view of the fan casing of Figure 3;
图6示出了具有可变宽度的风机外壳在第一位置、第二位置和第三位置的宽度尺寸;Figure 6 shows the width dimensions of the fan casing having a variable width in a first position, a second position, and a third position;
图7示出了位于风机外壳的喉部处的间隙宽度;Figure 7 shows the width of the gap at the throat of the fan casing;
图8a和8b示出了采用本实用新型的风机外壳的空调器室内机在空气流量测试中测试得到的风机转速和空气体积流量与传统空调器室内机的示意性柱形图;以及8a and 8b are schematic cross-sectional views showing a fan speed and an air volume flow rate tested in an air flow test using an air conditioner indoor unit of the present invention, and a conventional air conditioner indoor unit;
图8c和8d示出了采用本实用新型的风机外壳的空调器室内机在噪音测试中测试得到的噪音和风机转速与传统空调器室内机的示意性柱形图。Figures 8c and 8d show schematic bar graphs of the noise and fan speeds tested in the noise test of the air conditioner indoor unit using the fan casing of the present invention and the conventional air conditioner indoor unit.
具体实施方式detailed description
以下将结合图3、3a、4-7、8a-8d说明本实用新型的风机外壳的最佳实施例,其中相同的标号表示相同的部件。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the fan casing of the present invention will be described with reference to Figs. 3, 3a, 4-7, 8a-8d, wherein the same reference numerals denote the same components.
图3是本实用新型的风机外壳10的主视图,图4和5分别是图3的风机外壳的俯视图和左视图。如图3所示,该风机外壳10由用于空气流入的进气蜗壳11和用于空气流出的扩散管12组成。从图3中可以看到,进气蜗壳11具有类似蜗牛壳的形状,其中心设有中空轮部14,其外周缘围绕轮部14圆心沿螺旋线(例如,阿基米德螺旋形或对数螺旋线)方向延伸。扩散管12具有类似喇叭口的形状,其外周缘在与进气蜗壳11连接处切向延伸。在图3中,用L来标示扩散管12的外周缘切向延伸的长度。为了增加出口面积,可以将L设计为进气蜗壳11的中空轮部14直径的0.7-1.2倍。3 is a front view of the fan casing 10 of the present invention, and FIGS. 4 and 5 are a plan view and a left side view, respectively, of the fan casing of FIG. As shown in Fig. 3, the fan casing 10 is composed of an intake volute 11 for air inflow and a diffuser pipe 12 for air outflow. As can be seen from Fig. 3, the intake volute 11 has a shape similar to a snail shell, and is provided with a hollow wheel portion 14 at its center, the outer circumference of which surrounds the circumference of the wheel portion 14 along a spiral (for example, Archimedes spiral or The logarithmic spiral line extends in the direction. The diffuser tube 12 has a flare-like shape with its outer periphery extending tangentially at the junction with the inlet volute 11. In Fig. 3, the length of the tangential extension of the outer circumference of the diffuser tube 12 is indicated by L. In order to increase the exit area, L may be designed to be 0.7-1.2 times the diameter of the hollow wheel portion 14 of the intake volute 11.
以上只是对进气蜗壳11和扩散管12的形状设计的简单介绍,本领域的普通技术人员应当理解的是,对于进气蜗壳和扩散管的外形设计的任何公知变型都应当落在本实用新型的保护范围之内。The above is merely a brief introduction to the shape design of the intake volute 11 and the diffuser tube 12. It will be understood by those skilled in the art that any known variations on the shape design of the intake volute and the diffuser should fall within the present specification. The scope of protection of utility models.
本实用新型的风机外壳不同于传统的风机外壳的主要特征在于:在风机外壳 10中至少进气蜗壳11的宽度是连续变化的。在本实用新型的一个较佳实施例中,风机外壳10的进气蜗壳11的宽度随着其外周缘沿螺旋线方向延伸而逐渐增大。在本实用新型的另一个较佳实施例中,风机外壳10的进气蜗壳11和扩散管12的宽度随着其外周缘延伸均逐渐增大。The main feature of the fan casing of the present invention is different from the conventional fan casing: in the fan casing At least 10 of the inlet volutes 11 have a continuously varying width. In a preferred embodiment of the present invention, the width of the inlet volute 11 of the fan casing 10 gradually increases as its outer circumference extends in the direction of the helix. In another preferred embodiment of the present invention, the widths of the inlet volute 11 and the diffuser tube 12 of the fan casing 10 gradually increase as their outer circumference extends.
请参见图6,该图示出了风机外壳10在第一位置(a,a')、第二位置(b,b')和第三位置(c,c')的宽度尺寸。可以看到,风机外壳10在第一位置处的宽度最小,而在第三位置处的宽度最大。Referring to Figure 6, there is shown the width dimension of the fan casing 10 in the first position (a, a'), the second position (b, b') and the third position (c, c'). It can be seen that the fan casing 10 has the smallest width at the first position and the largest at the third position.
具体地说,本申请所定义的“第一位置(a,a')”,是指进气蜗壳11的起始位置,即,进气蜗壳11的螺旋外周缘具有最大曲率的位置。本申请所定义的“第二位置(b,b')”,是指进气蜗壳11从上述第一位置开始围绕其轮部14圆心沿螺旋线方向延伸360°之后所到达的位置。该第二位置与第一位置基本重合在风机外壳10的喉部13处。本申请所定义的“第三位置(c,c')”,是指扩散管12的出口位置。Specifically, the "first position (a, a')" as defined in the present application means the initial position of the intake volute 11, that is, the position where the outer peripheral edge of the spiral of the intake volute 11 has the maximum curvature. The "second position (b, b')" as defined in the present application refers to a position reached after the intake volute 11 extends 360 degrees in the spiral direction around the center of the wheel portion 14 from the first position. The second position substantially coincides with the first position at the throat 13 of the fan casing 10. The "third position (c, c')" as defined in the present application refers to the exit position of the diffuser tube 12.
从图6中可以清楚地看到,如果将风机外壳10在第一位置(a,a')的宽度尺寸定义为d1,风机外壳10在第二位置(b,b')的宽度尺寸定义为d2,并且将第一位置和第二位置(诸如a和b)之间沿风机外壳宽度的距离定位为d'的话,则可以得到d2﹥d1且d2=d1+2d'。通过实验发现,d2/d1的比值在1.05-1.30之间为宜。As can be clearly seen from Fig. 6, if the width dimension of the fan casing 10 at the first position (a, a') is defined as d1, the width dimension of the fan casing 10 at the second position (b, b') is defined as D2, and positioning the distance between the first position and the second position (such as a and b) along the width of the fan casing as d', then d2>d1 and d2=d1+2d' can be obtained. It has been found through experiments that the ratio of d2/d1 is preferably between 1.05 and 1.30.
如果将风机外壳10在第二位置(b,b')的宽度尺寸定义为d2,风机外壳10在第三位置(c,c')的宽度尺寸定义为d3,则可以得到d3﹥d2。通过实验还发现,d3/d2的比值最好也在1.05-1.30之间。If the width dimension of the fan casing 10 in the second position (b, b') is defined as d2 and the width dimension of the fan casing 10 in the third position (c, c') is defined as d3, d3 > d2 can be obtained. It has also been found through experiments that the ratio of d3/d2 is also preferably between 1.05-1.30.
另外,如图5所示,由于风机外壳10在第一位置处的宽度d1以线性方式逐渐增加到在第二位置处的宽度d2,则进气蜗壳11的外周缘延伸所沿的螺旋线与风机外壳10的长度方向形成倾斜角α。在本实施例中,倾斜角α的数值范围为5-30°。当然,本领域的技术人员众所周知的是,也可以使风机外壳10在第一位置处的宽度d1以二次函数方式逐渐增加到在第二位置处的宽度d2,这些变型都将落在本实用新型的保护范围内。In addition, as shown in FIG. 5, since the width d1 of the fan casing 10 at the first position is gradually increased in a linear manner to the width d2 at the second position, the spiral of the outer circumference of the intake volute 11 is extended. An inclination angle α is formed with the longitudinal direction of the fan casing 10. In the present embodiment, the value of the inclination angle α ranges from 5 to 30°. Of course, it is well known to those skilled in the art that the width d1 of the fan casing 10 at the first position can be gradually increased in a quadratic function to the width d2 at the second position, and these variations will fall into the present application. New range of protection.
请参见图3a,其中示出了风机外壳沿图3中的A-A线截取的剖面。可以看到,喉部13具有C型的端面结构,其沿着风机外壳宽度方向呈现中间高、两端低的构造(在图6中同样可见)。 Referring to Figure 3a, a cross-section of the fan casing taken along line A-A of Figure 3 is shown. It can be seen that the throat 13 has a C-shaped end face structure which exhibits a mid-high and low-end configuration along the width of the fan casing (also visible in Figure 6).
返回图3,可以看到C形端面喉部13在风机外壳10的两侧和中间部分具有不同的半径。具体地说,C形端面喉部13在风机外壳10的两侧位置具有最小半径R1,而在风机外壳10的中间位置具有最大半径R2,其中R2/R1的比值落在1.5-2.5的范围内。Returning to Figure 3, it can be seen that the C-shaped end throats 13 have different radii on both sides and intermediate portions of the fan casing 10. Specifically, the C-shaped end face throat 13 has a minimum radius R1 at both sides of the fan casing 10 and a maximum radius R2 at the intermediate position of the fan casing 10, wherein the ratio of R2/R1 falls within the range of 1.5-2.5. .
图7示出了风机外壳10的喉部13与中空轮部14之间的间隙宽度t。本技术领域的普通技术人员应当理解的是,轮部14与喉部13之间的间隙宽度t如果过大的话,会导致气流在喉部横截面处的平均速度降低。虽然现有技术中对喉部13的形状作出了种种改进,以减少气流在喉部区域的分离和/或回流,但上述平均速度仍然不可避免地降低,并且导致噪音增加。通过使用本实用新型的风机外壳的C型端面喉部,可以减少气流在该喉部区域的旋转冲击,尤其是喉部沿风机外壳宽度方向的中间区域,从而减少由此产生的噪音。FIG. 7 shows the gap width t between the throat 13 of the fan casing 10 and the hollow wheel portion 14. It will be understood by one of ordinary skill in the art that if the gap width t between the wheel portion 14 and the throat portion 13 is too large, the average velocity of the airflow at the cross-section of the throat will be reduced. Although various modifications have been made to the shape of the throat 13 in the prior art to reduce separation and/or backflow of airflow in the throat region, the above average speed is still inevitably lowered and causes an increase in noise. By using the C-shaped end face throat of the fan casing of the present invention, it is possible to reduce the rotational impact of the airflow in the throat region, especially the intermediate portion of the throat along the width direction of the fan casing, thereby reducing the noise generated thereby.
在本实用新型的又一个较佳实施例中,可以对风机外壳10的外边缘进行倒角,以使风机外壳10的两侧表面成为曲面。通过上述改进,可以减少引导空气流入空调器室内机并越过该风机外壳10所产生的损失。经过实验发现,可以将进气蜗壳11的外边缘倒角为进气蜗壳11的中空轮部14直径的1/8至1/10。In still another preferred embodiment of the present invention, the outer edge of the fan casing 10 may be chamfered such that both side surfaces of the fan casing 10 become curved. By the above improvement, it is possible to reduce the loss of the guide air flowing into the air conditioner indoor unit and passing over the fan casing 10. It has been experimentally found that the outer edge of the intake volute 11 can be chamfered to be 1/8 to 1/10 of the diameter of the hollow wheel portion 14 of the intake volute 11.
为了确定本实用新型的风机外壳10与传统风机外壳相比所获得的技术效果是否显著,申请人在出风静压为30pa的相同条件下对采用本实用新型的风机外壳10的空调器室内机和采用传统风机外壳的空调器室内机进行了空气流量测试和噪音测试。在图8a至8d中,分别示出了上述测试的比较结果。In order to determine whether the technical effect obtained by the fan casing 10 of the present invention is significantly higher than that of the conventional fan casing, the applicant applies the air conditioner indoor unit of the fan casing 10 of the present invention under the same conditions of the outlet static pressure of 30 Pa. Air flow testing and noise testing were performed with an air conditioner indoor unit using a conventional fan casing. In Figures 8a to 8d, the comparison results of the above tests are shown, respectively.
可以看到,在图8a和8b所示的空气流量测试中,使用本实用新型的风机外壳10的空调器室内机具有更大的空气体积流量(与采用传统风机外壳的空调器室内机相比增加23m3/hr或更多)和更低的旋转速度(与采用传统风机外壳的空调器室内机相比降低54rpm或更多)。在图8c和8d所示的噪音测试中,使用本实用新型的风机外壳10的空调器室内机具有更低的噪音级别(与采用传统风机外壳的空调器室内机相比降低1.6dBA或更多)和更低的旋转速度(与采用传统风机外壳的空调器室内机相比降低70rpm或更多)。在上述测试中,使用本实用新型的风机外壳10的空调器室内机所消耗的马达输入能量与采用传统风机外壳的空调器室内机相比基本上是同一级别的(约为52-54W)。It can be seen that in the air flow test shown in Figures 8a and 8b, the air conditioner indoor unit using the fan casing 10 of the present invention has a larger air volume flow rate (compared to an air conditioner indoor unit using a conventional fan casing) Increased rotation speed of 23 m 3 /hr or more) and lower by 54 rpm or more compared to an air conditioner indoor unit using a conventional fan casing. In the noise test shown in Figures 8c and 8d, the air conditioner indoor unit using the fan casing 10 of the present invention has a lower noise level (a reduction of 1.6dBA or more compared to an air conditioner indoor unit using a conventional fan casing) ) and lower rotational speed (70 rpm or more compared to an air conditioner indoor unit using a conventional fan casing). In the above test, the motor input energy consumed by the air conditioner indoor unit using the fan casing 10 of the present invention is substantially the same level (about 52-54 W) as compared with the air conditioner indoor unit using the conventional fan casing.
此外,申请人还将另外两个尺寸更大的空调器室内机作为原型并进行了噪音测试,结果显示均获得了更低的噪音级别(分别降低了1.6dBA和2.3dBA或更多)。 In addition, the applicant also prototyped two other larger air conditioner indoor units and conducted noise tests, which showed lower noise levels (1.6dBA and 2.3dBA or more, respectively).
由此可见,通过将空调器室内机中使用的传统风机壳体更换为本实用新型的改进型风机壳体,可以有效地减少噪音,从而满足对环境安静程度要求较高的用户的需求。It can be seen that by replacing the conventional fan casing used in the indoor unit of the air conditioner with the improved fan casing of the utility model, the noise can be effectively reduced, thereby meeting the demand of users with high requirements for environmental quietness. .
虽然以上结合了若干实施例对本实用新型的风机外壳的结构和技术效果作了进一步说明,但是本技术领域中的普通技术人员应当认识到,上述示例仅是用来说明的,而不能作为对本实用新型的限制。因此,可以在权利要求书的实质精神范围内对本实用新型进行变型,这些变型都将落在本实用新型的权利要求书所要求的范围之内。 Although the structure and technical effects of the fan casing of the present invention have been further described above in connection with a number of embodiments, those skilled in the art will appreciate that the above examples are for illustrative purposes only and are not intended to be useful. New restrictions. Therefore, the present invention may be modified within the spirit and scope of the claims, and these modifications are intended to fall within the scope of the appended claims.

Claims (10)

  1. 一种风机外壳(10),包括:A fan casing (10) comprising:
    供气流进入的进气蜗壳(11),所述进气蜗壳(11)的中心设有中空轮部(14);以及An intake volute (11) for airflow entering, the center of the intake volute (11) being provided with a hollow wheel portion (14);
    扩散管(12),所述扩散管(12)与所述进气蜗壳(11)连接并供气流流出,a diffuser tube (12) connected to the inlet volute (11) for airflow
    其特征在于,在所述风机外壳(10)中至少所述进气蜗壳(11)的宽度是连续变化的。It is characterized in that at least the width of the intake volute (11) in the fan casing (10) is continuously varied.
  2. 如权利要求1所述的风机外壳(10),其特征在于,所述进气蜗壳(11)的宽度随着其外周缘沿螺旋线方向延伸而逐渐增大。A fan casing (10) according to claim 1, characterized in that the width of the inlet volute (11) gradually increases as its outer circumference extends in the direction of the helix.
  3. 如权利要求2所述的风机外壳(10),其特征在于,所述进气蜗壳(11)和所述扩散管(12)的宽度随着其外周缘延伸均逐渐增大。The fan casing (10) according to claim 2, wherein the width of the intake volute (11) and the diffuser (12) gradually increase as the outer circumference thereof extends.
  4. 如权利要求3所述的风机外壳(10),其特征在于,所述风机外壳(10)在第二位置处的宽度(d2)与所述风机外壳(10)在第一位置处的宽度(d1)的比值(d2/d1)为1.05-1.30,其中,所述第一位置是所述进气蜗壳(11)的起始位置,所述第二位置是所述进气蜗壳(11)从所述第一位置开始沿螺旋线方向延伸360°之后所到达的位置。The fan casing (10) according to claim 3, wherein a width (d2) of the fan casing (10) at the second position and a width of the fan casing (10) at the first position ( The ratio (d2/d1) of d1) is 1.05-1.30, wherein the first position is a starting position of the intake volute (11), and the second position is the intake volute (11) a position reached after extending 360° in the spiral direction from the first position.
  5. 如权利要求4所述的风机外壳(10),其特征在于,所述风机外壳(10)在第三位置处的宽度(d3)与所述风机外壳(10)在第二位置处的宽度(d2)的比值(d3/d2)为1.05-1.30,其中所述第三位置是所述扩散管(12)的出口位置。The fan casing (10) according to claim 4, wherein a width (d3) of the fan casing (10) at the third position and a width of the fan casing (10) at the second position ( The ratio (d3/d2) of d2) is 1.05-1.30, wherein the third position is the exit position of the diffusion tube (12).
  6. 如权利要求2所述的风机外壳(10),其特征在于,所述风机外壳(10)宽度以线性方式逐渐增加,并且所述进气蜗壳(11)的外周缘延伸所沿的螺旋线与所述风机外壳(10)的长度方向形成倾斜角(α)。A fan casing (10) according to claim 2, wherein said fan casing (10) has a width that increases gradually in a linear manner, and a spiral along which the outer periphery of said inlet volute (11) extends An oblique angle (α) is formed with the longitudinal direction of the fan casing (10).
  7. 如权利要求6所述的风机外壳(10),其特征在于,所述倾斜角(α)为5-30°。The fan casing (10) according to claim 6, wherein said inclination angle (α) is 5-30°.
  8. 如权利要求6所述的风机外壳(10),其特征在于,所述风机外壳(10)形成C形喉部(13),所述喉部(13)在所述风机外壳(10)的两侧位置具有第一半径(R1),在所述风机外壳(10)的中间位置具有第二半径(R2),其中,第二半径与第一半径的比值(R2/R1)为1.5-2.5。The fan casing (10) according to claim 6, wherein said fan casing (10) forms a C-shaped throat (13), and said throat (13) is in said fan casing (10) The side position has a first radius (R1) having a second radius (R2) at an intermediate position of the fan casing (10), wherein the ratio of the second radius to the first radius (R2/R1) is 1.5-2.5.
  9. 如权利要求1所述的风机外壳(10),其特征在于,所述进气蜗壳(11) 的外边缘倒角成所述进气蜗壳(11)的中空轮部(14)直径的1/8至1/10。The fan casing (10) of claim 1 wherein said intake volute (11) The outer edge is chamfered to 1/8 to 1/10 of the diameter of the hollow wheel portion (14) of the intake volute (11).
  10. 如权利要求1所述的风机外壳(10),其特征在于,所述扩散管(12)的外周缘切向延伸的长度(L)为所述进气蜗壳(11)的中空轮部(14)直径的0.7至1.2倍。 The fan casing (10) according to claim 1, wherein a length (L) of a tangential extension of an outer circumference of the diffuser pipe (12) is a hollow wheel portion of the intake volute (11) ( 14) 0.7 to 1.2 times the diameter.
PCT/CN2015/097810 2014-12-19 2015-12-18 Fan housing WO2016095838A1 (en)

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CN204553343U (en) * 2014-12-19 2015-08-12 特灵空调系统(中国)有限公司 Flow blower casing
US10865798B2 (en) 2016-05-30 2020-12-15 Zhongshan Broad-Ocean Motor Co., Ltd. Fan coil unit
CN106438405B (en) * 2016-09-22 2019-04-26 中山大洋电机股份有限公司 A kind of coiler fan structure

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