CN211778218U - Anti-surge fans and air conditioners - Google Patents

Anti-surge fans and air conditioners Download PDF

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CN211778218U
CN211778218U CN201922408544.2U CN201922408544U CN211778218U CN 211778218 U CN211778218 U CN 211778218U CN 201922408544 U CN201922408544 U CN 201922408544U CN 211778218 U CN211778218 U CN 211778218U
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impeller
fan
volute
surge
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段治锋
苏运宇
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Ningbo Aux Electric Co Ltd
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Abstract

本实用新型提供了一种防喘振风机和空调,防喘振风机包括蜗壳和叶轮,所述蜗壳形成出风口,所述蜗壳内侧包括蜗舌,所述蜗壳外侧包括第一弧形部分和一靠近出风口的直线部。风机喘振主要是由于风机内部周期性的产生涡流现象,在本技术方案中对蜗壳的具体尺寸做出具体的设计,由于蜗壳与其中叶轮的相对位置以及尺寸大小可以很明显的减轻喘振,对其中气流的控制有着制约作用。

Figure 201922408544

The utility model provides an anti-surge fan and an air conditioner. The anti-surge fan comprises a volute and an impeller, the volute forms an air outlet, the inner side of the volute includes a volute tongue, and the outer side of the volute includes a first arc shaped part and a straight part close to the air outlet. Fan surge is mainly due to the periodic eddy current phenomenon inside the fan. In this technical solution, the specific size of the volute is specifically designed. Due to the relative position and size of the volute and the impeller, the surge can be significantly reduced. Vibration, which restricts the control of airflow.

Figure 201922408544

Description

防喘振风机和空调Anti-surge fans and air conditioners

技术领域technical field

本实用新型涉及空调设备领域,具体涉及一种防喘振风机和空调。The utility model relates to the field of air-conditioning equipment, in particular to an anti-surge fan and an air conditioner.

背景技术Background technique

贯流风机广泛运用于家用空调的室内机中,由于位于室内使用,故此对其噪音控制就十分重要,如果噪音过大,将会影响用户的使用体验。在室内机的试制阶段频发喘振现象,喘振伴随的噪声会极大地影响人的舒适性。然而,现在尚无预防喘振现象的设计方法及准则。实验研究发现贯流风机蜗壳a、b段的结构及蜗舌间距c等对风机喘振的剧烈程度影响明显。Cross-flow fans are widely used in indoor units of household air conditioners. Because they are used indoors, noise control is very important. If the noise is too loud, it will affect the user's experience. During the trial production stage of the indoor unit, the phenomenon of surge occurs frequently, and the noise accompanying the surge will greatly affect the comfort of people. However, there are currently no design methods and guidelines for preventing surge phenomena. The experimental study found that the structure of sections a and b of the volute casing of the cross-flow fan and the spacing c of the volute tongue have obvious effects on the severity of the fan surge.

实用新型内容Utility model content

为解决上述至少一个问题,本实用新型提供的一种防喘振风机,包括蜗壳和叶轮,所述蜗壳形成出风口,所述蜗壳内侧包括蜗舌,所述蜗壳外侧包括第一弧形部分和一靠近出风口的直线部。In order to solve at least one of the above problems, an anti-surge fan provided by the present invention includes a volute and an impeller, the volute forms an air outlet, the inner side of the volute includes a volute tongue, and the outer side of the volute includes a first An arc part and a straight part close to the air outlet.

风机喘振主要是由于风机内部周期性的产生涡流现象,在本技术方案中对蜗壳的具体尺寸做出具体的设计,由于蜗壳与其中叶轮的相对位置以及尺寸大小可以很明显的减轻喘振,对其中气流的控制有着制约作用。The surge of the fan is mainly due to the periodic eddy current phenomenon inside the fan. In this technical solution, the specific size of the volute is specifically designed. Due to the relative position and size of the volute and the impeller, the surge can be significantly reduced. Vibration, which restricts the control of airflow.

优选地,所述第一弧形部分和所述直线部通过衔接点连接,所述衔接点处到所述叶轮中心的距离L与所述叶轮半径R的差值y与所述叶轮半径R的比值w在0.68到0.78之间,即Preferably, the first arc-shaped portion and the straight portion are connected by a joint point, and the difference y between the distance L from the joint point to the center of the impeller and the radius R of the impeller and the radius R of the impeller The ratio w is between 0.68 and 0.78, i.e.

w=y/R=0.73±0.05,其中y=L-R。w=y/R=0.73±0.05, where y=L-R.

当w值控制在0.68到0.78之间时,可以降低内部湍流,降低震动。When the w value is controlled between 0.68 and 0.78, the internal turbulence can be reduced and the vibration can be reduced.

优选地,与所述第一弧形部分相对的叶轮区域构成气流通过区,所述气流通过区处通过叶轮叶片的气流流速方向与所述直线部形成的夹角为出口冲角β,Preferably, the impeller area opposite to the first arc-shaped portion constitutes an airflow passing area, and the included angle formed by the direction of the airflow velocity passing through the impeller blades at the airflow passing area and the straight portion is the outlet angle of attack β,

其中最大出口冲角为:β=40°±2°。The maximum exit angle of attack is: β=40°±2°.

当出口冲角β控制在38°到42°之间,可以降低内部湍流,降低震动。When the outlet attack angle β is controlled between 38° and 42°, the internal turbulence can be reduced and the vibration can be reduced.

优选地,所述出口冲角β为所述气流通过区的叶轮叶片切线方向与所述直线部形成的夹角。Preferably, the outlet attack angle β is an angle formed by the tangential direction of the impeller blade of the airflow passing area and the straight line portion.

优选地,所述蜗舌内壁到所述叶轮外缘的垂直距离C等于3.1mm-3.5mm。Preferably, the vertical distance C from the inner wall of the volute tongue to the outer edge of the impeller is equal to 3.1mm-3.5mm.

优选地,所述蜗舌与所述出风口之间通过第二弧形部分连接。此时将其通过第二弧形部分连接,可使得过渡更为平滑,降低湍流的程度。Preferably, the volute tongue and the air outlet are connected by a second arc portion. Connecting them through a second arc at this point makes the transition smoother and reduces the degree of turbulence.

优选地,w=0.73。Preferably, w=0.73.

优选地,β=40°。Preferably, β=40°.

当w=0.73,β=40°时,此时湍流最低,最大程度的降低震动。When w=0.73 and β=40°, the turbulence is the lowest at this time, and the vibration is reduced to the greatest extent.

优选地,所述出风口(12)截面沿着气流流动方向增加。由于出风口内部气压较高,为了使得本装置可以将气流传送至更远的地方,使空间内部温度更为均匀,故此将出风口设置为沿着气流流动方向增加,此时气流速度提高,将气流送至更远的位置。Preferably, the cross section of the air outlet (12) increases along the flow direction of the airflow. Due to the high air pressure inside the air outlet, in order to enable the device to transmit the airflow to a farther place and make the temperature inside the space more uniform, the air outlet is set to increase along the flow direction of the airflow. Air flow is sent further away.

本申请还提供一种空调,包括上述技术方案任一项所述的风机。The present application also provides an air conditioner, including the fan according to any one of the above technical solutions.

附图说明Description of drawings

图1为第一弧形部分和所述直线部和衔接点示意图;Fig. 1 is the schematic diagram of the first arc portion and the straight line portion and the connecting point;

图2为出口冲角β示意图;Figure 2 is a schematic diagram of the outlet angle of attack β;

图3为蜗舌内壁到所述叶轮外缘垂直距离示意图。FIG. 3 is a schematic diagram of the vertical distance from the inner wall of the volute tongue to the outer edge of the impeller.

附图标记说明:Description of reference numbers:

蜗壳1、第一弧形部分11、出风口12、衔接点13、直线部121Volute 1, first arc portion 11, air outlet 12, connection point 13, straight portion 121

蜗舌14、第二弧形部分15;volute tongue 14, second arc portion 15;

叶轮2、气流通过区21。The impeller 2 , the airflow passing area 21 .

具体实施方式Detailed ways

为使本实用新型的上述目的、特征和优点能够更为明显易懂,下面结合附图对本实用新型的具体实施例做详细的说明。In order to make the above objects, features and advantages of the present utility model more clearly understood, the specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

在实施例一中提供的一种防喘振风机,包括蜗壳1和叶轮2,所述蜗壳1形成出风口12,所述蜗壳1内侧包括蜗舌14,其特征在于:所述蜗壳1外侧包括第一弧形部分11和一靠近出风口12的直线部121。风机喘振主要是由于风机内部周期性的产生涡流现象,在本技术方案中对蜗壳的具体尺寸做出具体的设计,由于蜗壳与其中叶轮的相对位置以及尺寸大小可以很明显的减轻喘振,对其中气流的控制有着制约作用。An anti-surge fan provided in the first embodiment includes a volute 1 and an impeller 2, the volute 1 forms an air outlet 12, and the inner side of the volute 1 includes a volute tongue 14, characterized in that: the volute 1 The outer side of the casing 1 includes a first arc portion 11 and a straight portion 121 close to the air outlet 12 . The surge of the fan is mainly due to the periodic eddy current phenomenon inside the fan. In this technical solution, the specific size of the volute is specifically designed. Due to the relative position and size of the volute and the impeller, the surge can be significantly reduced. Vibration, which restricts the control of airflow.

在上述实施例的基础上,所述第一弧形部分11和所述直线部121通过衔接点13连接,所述衔接点13处到所述叶轮2中心的距离L与所述叶轮2半径R的差值y与所述叶轮2半径R的比值w在0.68到0.78之间,即On the basis of the above embodiment, the first arc portion 11 and the straight portion 121 are connected by a joint point 13 , and the distance L from the joint point 13 to the center of the impeller 2 is the radius R of the impeller 2 . The ratio w of the difference y to the radius R of the impeller 2 is between 0.68 and 0.78, that is

w=y/R=0.73±0.05,其中y=L-R。w=y/R=0.73±0.05, where y=L-R.

当w值控制在0.68到0.78之间时,可以降低内部湍流,降低震动。When the w value is controlled between 0.68 and 0.78, the internal turbulence can be reduced and the vibration can be reduced.

如图1所示,第一弧形部分11为AB处的弧形部位,所述直线部121为图中BC所示部位,衔接点13为B点处,叶轮中心处为O点,其中L为B点到O点的距离,即为BO的长度,BO的长度与叶轮半径R的差值为y,根据模拟计算当y与R的比值为在0.68到0.78之间,湍流的程度最低,降低了喘振。As shown in FIG. 1 , the first arc-shaped part 11 is the arc-shaped part at AB, the straight part 121 is the part shown in BC in the figure, the connecting point 13 is at point B, the center of the impeller is point O, where L is the distance from point B to point O, which is the length of BO. The difference between the length of BO and the impeller radius R is y. According to the simulation calculation, when the ratio of y to R is between 0.68 and 0.78, the degree of turbulence is the lowest. Reduced surge.

在另一个实施例中对出口冲角β做出模拟,与所述第一弧形部分11相对的叶轮2区域构成气流通过区21,所述气流通过区21处通过叶轮2叶片的气流流速方向与所述直线部121形成的夹角为出口冲角β,In another embodiment, the outlet angle of attack β is simulated, and the area of the impeller 2 opposite to the first arc-shaped portion 11 constitutes the airflow passing area 21 , and the airflow velocity direction of the airflow passing through the blades of the impeller 2 at the airflow passing area 21 The angle formed with the straight portion 121 is the exit angle of attack β,

其中最大出口冲角为:β=40°±2°。The maximum exit angle of attack is: β=40°±2°.

当出口冲角β控制在38°到42°之间,可以降低内部湍流,降低震动。When the outlet attack angle β is controlled between 38° and 42°, the internal turbulence can be reduced and the vibration can be reduced.

如图2所示,图中虚线所圈处为气流通过区21,气流在叶轮的带动下,受到BC内壁的控制,气流从两者之间处向外运动,此时气体流动方向与直线部121BC的夹角为出口冲角β,将出口冲角β控制为38°到42°之间降低了湍流程度,最大程度的降低喘振。As shown in Figure 2, the area enclosed by the dotted line in the figure is the airflow passing area 21. The airflow is driven by the impeller and controlled by the inner wall of the BC, and the airflow moves outward from the space between the two. The included angle of 121BC is the outlet angle of attack β, and controlling the outlet attack angle β to be between 38° and 42° reduces the degree of turbulence and minimizes surge.

在上述技术方案的基础上,所述出口冲角β为所述气流通过区21的叶轮21叶片切线方向与所述直线部121形成的夹角。On the basis of the above technical solutions, the outlet attack angle β is the angle formed by the tangential direction of the blades of the impeller 21 in the airflow passing area 21 and the straight portion 121 .

出口冲角β也可以描述为叶轮21叶片切线方向,与直线部121BC部分的夹角。The outlet attack angle β can also be described as the included angle between the tangential direction of the blade of the impeller 21 and the straight portion 121BC.

通过模拟可以知,所述蜗舌14内壁到所述叶轮2外缘的垂直距离C等于3.1mm-3.5mm。It can be known by simulation that the vertical distance C from the inner wall of the volute tongue 14 to the outer edge of the impeller 2 is equal to 3.1 mm-3.5 mm.

如图3所示,蜗舌14内壁处与其最接近的叶轮处的距离也会影响湍流的发生,通过模拟将此间距C设置为特定的距离可以降低湍流程度最大程度的降低喘振。As shown in FIG. 3 , the distance between the inner wall of the volute tongue 14 and the closest impeller also affects the occurrence of turbulence. Setting this distance C to a specific distance through simulation can reduce the degree of turbulence and reduce the surge to the greatest extent.

另外,所述蜗舌14与所述出风口12之间通过第二弧形部分15连接。此时将其通过第二弧形部分连接,可使得过渡更为平滑,降低湍流的程度。In addition, the volute tongue 14 and the air outlet 12 are connected by a second arc portion 15 . Connecting them through a second arc at this point makes the transition smoother and reduces the degree of turbulence.

在一个具体的实施例中,可以将w=0.73、β=40°。In a specific embodiment, w=0.73, β=40°.

当w=0.73,β=40°时,此时湍流最低,最大程度的降低震动。When w=0.73 and β=40°, the turbulence is the lowest at this time, and the vibration is reduced to the greatest extent.

根据上述实施例给出的具体参数控制,可以根据具体参数的不同的组合来得到不同控制喘振的形式:According to the specific parameter control given in the above embodiment, different forms of control surge can be obtained according to different combinations of specific parameters:

(1)一种防喘振风机,其蜗壳具有如下参数:(1) An anti-surge fan, whose volute has the following parameters:

所述第一弧形部分11和所述直线部121通过衔接点13连接,所述衔接点13处到所述叶轮2中心的距离L与所述叶轮2半径R的差值y与所述叶轮2半径R的比值w在0.68到0.78之间,即The first arc-shaped portion 11 and the straight portion 121 are connected by a joint point 13, and the difference y between the distance L from the joint point 13 to the center of the impeller 2 and the radius R of the impeller 2 and the impeller 2 The ratio w of the radius R is between 0.68 and 0.78, i.e.

w=y/R=0.73±0.05,其中y=L-R。w=y/R=0.73±0.05, where y=L-R.

同时所述第一弧形部分11相对的叶轮2区域构成气流通过区21,所述气流通过区21处通过叶轮2叶片的气流流速方向与所述直线部121形成的夹角为出口冲角β,其中最大出口冲角为:β=40°±2°。At the same time, the area of the impeller 2 opposite to the first arc-shaped portion 11 constitutes an airflow passing area 21 , and the angle formed by the direction of the airflow velocity passing through the blades of the impeller 2 at the airflow passing area 21 and the straight portion 121 is the outlet angle of attack β , where the maximum exit angle of attack is: β=40°±2°.

(2)一种防喘振风机,其蜗壳具有如下参数:(2) An anti-surge fan, the volute of which has the following parameters:

所述第一弧形部分11和所述直线部121通过衔接点13连接,所述衔接点13处到所述叶轮2中心的距离L与所述叶轮2半径R的差值y与所述叶轮2半径R的比值w在0.68到0.78之间,即The first arc-shaped portion 11 and the straight portion 121 are connected by a joint point 13, and the difference y between the distance L from the joint point 13 to the center of the impeller 2 and the radius R of the impeller 2 and the impeller 2 The ratio w of the radius R is between 0.68 and 0.78, i.e.

w=y/R=0.73±0.05,其中y=L-R。w=y/R=0.73±0.05, where y=L-R.

同时所述蜗舌14内壁到所述叶轮2外缘的垂直距离C等于3.1mm。Meanwhile, the vertical distance C from the inner wall of the volute tongue 14 to the outer edge of the impeller 2 is equal to 3.1 mm.

(3)一种防喘振风机,其蜗壳具有如下参数:(3) an anti-surge fan, the volute has the following parameters:

所述第一弧形部分11相对的叶轮2区域构成气流通过区21,所述气流通过区21处通过叶轮2叶片的气流流速方向与所述直线部121形成的夹角为出口冲角β,其中最大出口冲角为:β=40°±2°。The area of the impeller 2 opposite to the first arc-shaped portion 11 constitutes an airflow passing area 21, and the angle formed by the direction of the airflow velocity passing through the blades of the impeller 2 at the airflow passing area 21 and the straight portion 121 is the outlet angle of attack β, The maximum exit angle of attack is: β=40°±2°.

同时所述蜗舌14内壁到所述叶轮2外缘的垂直距离C等于3.1mm。Meanwhile, the vertical distance C from the inner wall of the volute tongue 14 to the outer edge of the impeller 2 is equal to 3.1 mm.

(4)一种防喘振风机,其蜗壳具有如下参数:(4) An anti-surge fan, the volute of which has the following parameters:

所述第一弧形部分11和所述直线部121通过衔接点13连接,所述衔接点13处到所述叶轮2中心的距离L与所述叶轮2半径R的差值y与所述叶轮2半径R的比值w在0.68到0.78之间,即The first arc-shaped portion 11 and the straight portion 121 are connected by a joint point 13, and the difference y between the distance L from the joint point 13 to the center of the impeller 2 and the radius R of the impeller 2 and the impeller 2 The ratio w of the radius R is between 0.68 and 0.78, i.e.

w=y/R=0.73±0.05,其中y=L-R。w=y/R=0.73±0.05, where y=L-R.

同时所述第一弧形部分11相对的叶轮2区域构成气流通过区21,所述气流通过区21处通过叶轮2叶片的气流流速方向与所述直线部121形成的夹角为出口冲角β,其中最大出口冲角为:β=40°±2°At the same time, the area of the impeller 2 opposite to the first arc-shaped portion 11 constitutes an airflow passing area 21 , and the angle formed by the direction of the airflow velocity passing through the blades of the impeller 2 at the airflow passing area 21 and the straight portion 121 is the outlet angle of attack β , where the maximum exit angle of attack is: β=40°±2°

所述蜗舌14内壁到所述叶轮2外缘的垂直距离C等于3.1mm。The vertical distance C from the inner wall of the volute tongue 14 to the outer edge of the impeller 2 is equal to 3.1 mm.

上述具体参数的防喘振风机为采用衔接点13处到所述叶轮2中心的距离L与所述叶轮2半径R的差值y与所述叶轮2半径R的比值w,出口冲角β和蜗舌14内壁到所述叶轮2外缘的垂直距离,这三个参数两两组合的具体实施例,和一个同时符合上述三个参数的防喘振风机。The anti-surge fan of the above-mentioned specific parameters is the ratio w of the difference y between the distance L from the connection point 13 to the center of the impeller 2 and the radius R of the impeller 2 and the radius R of the impeller 2, the outlet angle of attack β and The vertical distance from the inner wall of the volute tongue 14 to the outer edge of the impeller 2 is a specific embodiment of the combination of these three parameters, and an anti-surge fan that meets the above three parameters at the same time.

在实际使用中也可以在一个防喘振风机中根据实际情况仅将其中一个参数做出改变,以降低成本。In actual use, only one of the parameters can be changed in an anti-surge fan according to the actual situation, so as to reduce the cost.

为了使得防喘振风机可以将内部气流送至更远,所述出风口12截面沿着气流流动方向增加。由于出风口内部气压较高,为了使得本装置可以将气流传送至更远的地方,使空间内部温度更为均匀,故此将出风口设置为沿着气流流动方向增加,此时气流速度提高,将气流送至更远的位置。In order to enable the anti-surge fan to send the internal air flow farther, the cross section of the air outlet 12 increases along the flow direction of the air flow. Due to the high air pressure inside the air outlet, in order to enable the device to transmit the airflow to a farther place and make the temperature inside the space more uniform, the air outlet is set to increase along the flow direction of the airflow. Air flow is sent further away.

本申请还提供一种空调,包括上述技术方案任一项所述的风机。The present application also provides an air conditioner, including the fan according to any one of the above technical solutions.

虽然本实用新型披露如上,但本实用新型并非限定于此。任何本领域技术人员,在不脱离本实用新型的精神和范围内,均可作各种更动与修改,因此本实用新型的保护范围应当以权利要求所限定的范围为准。Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be based on the scope defined by the claims.

Claims (10)

1. An anti-surge fan, includes spiral case (1) and impeller (2), spiral case (1) forms air outlet (12), spiral case (1) inboard includes volute tongue (14), its characterized in that: the outer side of the volute (1) comprises a first arc-shaped part (11) and a straight line part (121) close to the air outlet (12).
2. The fan of claim 1, wherein: the first arc-shaped part (11) and the straight line part (121) are connected by a joint point (13), and the ratio w of the difference y between the distance L from the center of the impeller (2) at the joint point (13) and the radius R of the impeller (2) to the radius R of the impeller (2) is between 0.68 and 0.78, namely
w is 0.73 + -0.05, wherein y is L-R.
3. The fan of claim 1, wherein: the area of the impeller (2) opposite to the first arc-shaped part (11) forms an airflow passing area (21), an included angle formed by the airflow speed direction of the impeller (2) passing through the blades of the impeller (2) at the airflow passing area (21) and the straight line part (121) is an outlet attack angle beta,
wherein the maximum exit attack angle is: β is 40 ° ± 2 °.
4. The fan of claim 3, wherein: the outlet attack angle beta is an included angle formed by the tangential direction of the blades of the impeller (2) in the airflow passing area (21) and the straight line part (121).
5. The fan of claim 1, wherein: the vertical distance C from the inner wall of the volute tongue (14) to the outer edge of the impeller (2) is equal to 3.1mm-3.5 mm.
6. The fan of claim 5, wherein: the volute tongue (14) is connected with the air outlet (12) through a second arc-shaped part (15).
7. The fan of claim 2, wherein: w is 0.73.
8. The fan of claim 3, wherein: β is 40 °.
9. The fan of claim 2, wherein: the cross section of the air outlet (12) is increased along the airflow flowing direction.
10. An air conditioner, characterized in that: comprising a fan according to any of claims 1-8.
CN201922408544.2U 2019-12-27 2019-12-27 Anti-surge fans and air conditioners Active CN211778218U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111059082A (en) * 2019-12-27 2020-04-24 宁波奥克斯电气股份有限公司 Anti-surge fans and air conditioners
CN114688086A (en) * 2020-12-28 2022-07-01 苏州三星电子有限公司 Volute and air duct machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111059082A (en) * 2019-12-27 2020-04-24 宁波奥克斯电气股份有限公司 Anti-surge fans and air conditioners
CN111059082B (en) * 2019-12-27 2025-05-06 宁波奥克斯电气有限公司 Anti-surge fans and air conditioners
CN114688086A (en) * 2020-12-28 2022-07-01 苏州三星电子有限公司 Volute and air duct machine
CN114688086B (en) * 2020-12-28 2024-06-07 苏州三星电子有限公司 Volute and duct machines

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