WO2017041727A1 - 一种空调、鼓形蜗壳风道系统及其风道蜗壳 - Google Patents

一种空调、鼓形蜗壳风道系统及其风道蜗壳 Download PDF

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WO2017041727A1
WO2017041727A1 PCT/CN2016/098408 CN2016098408W WO2017041727A1 WO 2017041727 A1 WO2017041727 A1 WO 2017041727A1 CN 2016098408 W CN2016098408 W CN 2016098408W WO 2017041727 A1 WO2017041727 A1 WO 2017041727A1
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volute
air
duct
outer casing
edge portion
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PCT/CN2016/098408
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English (en)
French (fr)
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王朝新
张辉
叶务占
金海元
丘晓宏
孟宪运
李德清
潘龙腾
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珠海格力电器股份有限公司
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Publication of WO2017041727A1 publication Critical patent/WO2017041727A1/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
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps

Definitions

  • the invention relates to the technical field of air conditioners, in particular to an air conditioner, a drum volute duct system and a duct volute thereof.
  • a straight volute duct system is generally used in an air conditioner cabinet, and its structure can be referred to as shown in Fig. 1, including a volute 10, a blade 20, a guide ring 30 and a motor 40; wherein the cross section of the duct volute is generally It is a rectangle, and the structure of the outer casing 101 of the volute can be referred to as shown in Figs.
  • This straight volute duct system has been widely used in ordinary rectangular air-conditioning cabinets.
  • the rectangular volute can be used due to the mismatch in shape.
  • the maximum length size selected will be limited. If the same size of the blades are used, the space occupied by the volute cavity will be larger, which will affect the air supply efficiency, and the noise will become higher. In addition, it will affect the shape. Appearance effect.
  • the present invention provides a duct volute, which can increase the size of the wind chamber inside the volute and improve the efficiency of the air volume and the air passage by adopting an arc-shaped outer casing matched with the cylindrical cabinet machine.
  • the present invention also provides a drum volute duct system to which the above-described duct volute is applied.
  • the present invention also provides an air conditioner to which the above-described drum volute duct system is applied.
  • the present invention provides the following technical solutions:
  • a duct volute comprising a first outer casing for opposing a circumferential surface of the wind vane, and a second outer casing for opposing an end surface of the fan;
  • a first edge portion of the first outer casing for connection with the second outer casing is curved and curved in a direction away from an inner cavity of the air duct volute.
  • the second edge portion of the first outer casing for engaging with the air guiding ring is curved, and the bending direction is away from the inner cavity of the air duct volute.
  • the intermediate portion of the first outer casing between the first edge portion and the second edge portion is curved, and the bending direction is away from the inner cavity of the air duct volute.
  • the first edge portion, the second edge portion and the intermediate portion form a continuous arc shape.
  • the first edge portion, the second edge portion and the intermediate portion are located on the same perfect spherical surface.
  • the first edge portion, the second edge portion and the intermediate portion are located on the same ellipsoidal surface.
  • the air volute is a unitary structure.
  • the air duct volute is welded or riveted by the first outer casing and the second outer casing.
  • a drum-shaped volute duct system includes a fan blade, a drafting ring, a motor and a volute, and the volute is the above-described duct volute.
  • An air conditioner is provided with a volute duct system in the cabinet, the cabinet machine is a cylindrical cabinet machine, and the volute duct system is the above-mentioned drum volute duct system.
  • the air volute provided by the present invention has a first edge portion of the circumferential first outer casing designed as an arc and a bending direction away from the inner cavity of the air volute.
  • the cross-sectional shape of the volute is designed to be drum-shaped; the outer shape of the curved volute can be matched with the cylindrical cabinet machine, and the worm provided by the present scheme is compared with the straight-shaped volute having a rectangular cross-section in the prior art.
  • the space inside the shell cavity is larger than the straight volute of the same width.
  • the larger volume of the air chamber allows the use of larger blades.
  • Figure 1 is an exploded view of a prior art straight volute duct system
  • FIG. 2 is a top plan view of a prior art straight volute duct system
  • Figure 3 is a top cross-sectional view of a prior art straight volute duct system
  • Figure 4 is a side view of a prior art straight volute duct system
  • Figure 5 is a side cross-sectional view of a prior art straight volute duct system
  • Figure 6 is a front elevational view of a prior art straight volute duct system
  • Figure 7 is an exploded view of a drum volute duct system according to an embodiment of the present invention.
  • Figure 8 is a plan view of a drum volute duct system according to an embodiment of the present invention.
  • Figure 9 is a top cross-sectional view of a drum volute duct system according to an embodiment of the present invention.
  • Figure 10 is a side view of a drum volute duct system according to an embodiment of the present invention.
  • Figure 11 is a side cross-sectional view of a drum volute duct system according to an embodiment of the present invention.
  • Figure 12 is a front elevational view of a drum volute duct system according to an embodiment of the present invention.
  • Figure 13 is a partial cross-sectional view of the air duct component provided on the whole machine according to an embodiment of the present invention.
  • Figure 14 is a top cross-sectional view of the air duct component provided on the complete machine according to an embodiment of the present invention.
  • 10 is a volute
  • 101 is a casing of a volute
  • 20 is a fan blade
  • 30 is a guide ring
  • 40 is a motor
  • 50 is a duct volute
  • 501 is a first outer casing of the volute
  • 502 is a second outer casing
  • 20 is a wind blade
  • 30 is a diversion ring
  • 40 is a motor
  • panel is a duct volute
  • 501 is a first outer casing of the volute
  • 502 is a second outer casing
  • 20 is a wind blade
  • 30 is a diversion ring
  • 40 is a motor
  • panel panel.
  • the core of the invention is to disclose a duct volute.
  • the size of the wind chamber inside the volute can be increased, and the air volume and the efficiency of the duct can be improved.
  • FIG. 7 to FIG. 12 are an exploded view, a top view, a top cross-sectional view, a side view, a side cross-sectional view and a front view of the drum volute duct system according to an embodiment of the present invention
  • 13 and FIG. 14 are a partial cross-sectional view and a top cross-sectional view of the air duct component provided on the entire machine according to an embodiment of the present invention.
  • the core volute provided by the embodiment of the present invention has a core improvement, comprising a first outer casing 501 for opposing the circumferential surface of the wind blade 20, and a second outer casing 502 for opposing the end surface of the blower 20;
  • the first edge portion of the first outer casing 501 for connecting with the second outer casing 502 is curved. And the bending direction is away from the inner cavity of the air volute volute 50; that is, the portion of the first outer casing 501 for connecting with the second outer casing 502 adopts a circular arc transition, and the arc structure of the first edge portion is different from the prior art.
  • Right angle structure, used for matching with cylindrical cabinet machine, its structure can be seen as shown in Figure 7-12.
  • the air duct volute provided by the embodiment of the present invention has a first edge portion of the circumferential first outer casing 501 as an arc shape, and the bending direction is away from the air duct volute 50.
  • the inner cavity, that is, the cross-sectional shape of the volute is designed into a drum shape; the outer shape of the curved volute can be matched with the model panel of the circular casing, and the structure can be as shown in FIG. 13 and FIG.
  • the space provided in the volute cavity of the present scheme is larger than the straight volute of the same width, and the larger volume of the plenum allows for a larger wind. Leaves, improve the efficiency of the air duct.
  • the volute When the guide ring 30 in the volute duct system is centrally mounted in the cylindrical cabinet, the volute is biased toward one side of the circular housing model panel 60, at which time the first edge portion of the first housing 501 is single.
  • the edge curved structure is capable of matching the structure in which the panel 60 is reduced in one side.
  • the second edge portion of the first outer casing 501 for engaging with the air guiding ring 30 is curved, and the bending direction is the inner cavity away from the air volute volute 50; that is, the first outer casing
  • the edge portions of the 501 axially on both sides are designed to have a convex arc shape, which can simultaneously match the reduced size structure on both sides of the panel 60, thereby being particularly suitable for the volute air duct system centrally disposed in the cylindrical cabinet machine. form.
  • the intermediate portion of the first outer casing 501 between the first edge portion and the second edge portion thereof is curved, and the bending direction is away from the inner cavity of the air duct volute 50;
  • the cylindrical structure of the model panel 60 maximizes the volume of the volute 50 wind chamber.
  • the first edge portion, the second edge portion and the intermediate portion form a continuous arc shape, that is, the first outer casing 501 is a continuous curved structure as a whole, and the specific curvature radius depends on the shape of the cabinet.
  • the first edge portion, the second edge portion and the intermediate portion are located on the same perfect spherical surface, that is, the first outer casing 501 is located on the same perfect spherical surface as the whole of the circumferential surface of the blade 20
  • the first outer casing 501 is located on the same perfect spherical surface as the whole of the circumferential surface of the blade 20
  • it is particularly suitable for an air conditioner cabinet having a circular cross section, and the outer diameter of the spherical surface is slightly smaller than the inner diameter of the panel 60.
  • the cross section of the first outer casing 501 is on the same circumference.
  • the first edge portion, the second edge portion and the intermediate portion are located on the same elliptical spherical surface, and are particularly suitable for an air conditioner cabinet having an elliptical cross section.
  • the first outer casing 501 is adjusted accordingly, for example, an arc structure suitable for matching the special-shaped cylindrical cabinet machine.
  • the inner casing of the first outer casing 501 adopts an arc structure that cooperates with the outer casing.
  • the duct volute 50 has an integral structure to ensure its airtightness.
  • the air volute volute 50 can also adopt an assembly structure, that is, a non-integrated structure, to reduce production difficulty and cost.
  • the air volute volute 50 is welded or riveted by the first outer casing 501 and the second outer casing 502, that is, a reliable fixed connection manner is adopted.
  • the wind tunnel volute 50 may also be detachably assembled from the first outer casing 501 and the second outer casing 502 for ease of loading and unloading maintenance.
  • the embodiment of the invention further provides a drum-shaped volute duct system, comprising a blade 20, a guide ring 30, a motor 40 and a volute, the core improvement of which is that the volute is the above-mentioned duct volute 50,
  • the structure can be referred to as shown in FIG.
  • the cross-sectional shape of the air volute volute 50 is designed into a drum shape, and the shape of the outer shape of the outer panel 60 and the volute 50 are curved, and the space in the volute cavity is the same width.
  • the straight volute 10 is larger, and the air supply efficiency is higher and the noise is lower when the air conditioner is running.
  • the embodiment of the invention further provides an air conditioner, wherein a volute air duct system is arranged in the cabinet, and the core improvement point is that the cabinet machine is a cylindrical cabinet machine, that is, the outer casing adopts an arc structure, and the cross section is preferably A perfect circle or ellipse, the volute duct system is the drum volute duct system described above.
  • the scheme designs the cross-sectional shape of the volute into a drum shape, and applies it to the cylindrical appearance of the cabinet machine, so that the shape of the volute is matched with the shape of the whole casing, and the volume of the wind chamber can be increased as much as possible, thereby selecting a larger wind. Leaves, improve the efficiency of the air duct.
  • the embodiment of the present invention provides a duct volute, and the cross-sectional shape of the volute is designed into a drum shape, and is applied to a cylindrical appearance cabinet, so that the outer shape of the volute can be combined with the circular shell.
  • the body model panels are matched.
  • the space provided in the volute chamber is larger and larger than the straight volute of the same width.
  • the volume of the chamber also allows for the use of larger blades, which provide higher efficiency and lower noise during air conditioning operation.
  • the embodiment of the invention also provides a drum volute duct system and an air conditioner using the above-mentioned air duct volute.

Abstract

一种风道蜗壳（50）、风道系统和空调，将蜗壳（50）的截面形状设计成鼓形，应用到圆筒形外观的柜机上，使蜗壳（50）的外壳形状能够与圆形壳体的机型面板（60）相匹配，与现有技术中截面为长方形的直形状蜗壳（10）相比，风道蜗壳（50）腔体内的空间相比同样宽度的直形蜗壳（10）更大，更大的风腔体积也就允许选用更大的风叶（20），在空调运行时，送风效率更高，噪音更低。

Description

一种空调、鼓形蜗壳风道系统及其风道蜗壳
本申请要求于2015年9月11日提交中国专利局、申请号为201510577788.7、发明名称为“一种空调、鼓形蜗壳风道系统及其风道蜗壳”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及空调技术领域，特别涉及一种空调、鼓形蜗壳风道系统及其风道蜗壳。
背景技术
目前，空调柜机中通常采用直形蜗壳风道系统，其结构可以参照图1所示，包括蜗壳10、风叶20、导流圈30和电机40；其中风道蜗壳截面一般都是长方形，蜗壳的外壳101结构可以参照图2-图6所示。这种直形蜗壳风道系统已经广泛应用于普通的长方体空调柜机中。
但是，这种蜗壳应用到圆筒形柜机上时，在圆筒形柜机的径向最大尺寸与长方体柜机的长度相同的情况下，由于形状的不匹配，截面为长方形的蜗壳能够选用的最大长度尺寸就会受到限制变小，如果采用相同大小的风叶，在蜗壳腔体内的空间占用比例更大，影响送风效率，噪音将会变高；另外，还会影响形体的外观效果。
发明内容
有鉴于此，本发明提供了一种风道蜗壳，通过采用与圆筒形柜机匹配的弧形外壳，可以加大蜗壳内风腔的大小，提高风量和风道的效率。
本发明还提供了一种应用上述风道蜗壳的鼓形蜗壳风道系统。
本发明还提供了一种应用上述鼓形蜗壳风道系统的空调。
为实现上述目的，本发明提供如下技术方案：
一种风道蜗壳，包括用于同风叶的周面相对的第一外壳，和用于同所述风机的端面相对的第二外壳；
所述第一外壳中用于同所述第二外壳连接的第一边缘部分为弧形，且弯曲方向为远离所述风道蜗壳的内腔。
优选的，所述第一外壳中用于同导流圈配合的第二边缘部分为弧形，且弯曲方向为远离所述风道蜗壳的内腔。
优选的，所述第一外壳中位于其所述第一边缘部分和所述第二边缘部分之间的中间部分为弧形，且弯曲方向为远离所述风道蜗壳的内腔。
优选的，所述第一边缘部分、所述第二边缘部分和所述中间部分构成连贯的弧形。
优选的，所述第一边缘部分、所述第二边缘部分和所述中间部分位于同一正圆球面上。
优选的，所述第一边缘部分、所述第二边缘部分和所述中间部分位于同一椭圆球面上。
优选的，所述风道蜗壳为一体式结构。
优选的，所述风道蜗壳由所述第一外壳和所述第二外壳焊接或者铆接而成。
一种鼓形蜗壳风道系统，包括风叶、导流圈、电机和蜗壳，所述蜗壳为上述的风道蜗壳。
一种空调，其柜机内设置有蜗壳风道系统，所述柜机为圆筒形柜机，所述蜗壳风道系统为上述的鼓形蜗壳风道系统。
从上述的技术方案可以看出，本发明提供的风道蜗壳，将其周向的第一外壳的第一边缘部分设计为弧形，且弯曲方向为远离风道蜗壳的内腔，即将蜗壳的截面形状设计成鼓形；这种弧形蜗壳的外壳形状能够与圆筒形柜机相匹配，与现有技术中截面为长方形的直形状蜗壳相比，本方案提供的蜗壳腔体内的空间相比同样宽度的直形蜗壳更大，更大的风腔体积也就允许选用更大的风叶，在空调运行时，送风效率更高，噪音更低。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为现有技术中直形蜗壳风道系统的爆炸图；
图2为现有技术中直形蜗壳风道系统的俯视图；
图3为现有技术中直形蜗壳风道系统的俯视剖视图；
图4为现有技术中直形蜗壳风道系统的侧视图；
图5为现有技术中直形蜗壳风道系统的侧视剖视图；
图6为现有技术中直形蜗壳风道系统的正视图；
图7为本发明实施例提供的鼓形蜗壳风道系统的爆炸图；
图8为本发明实施例提供的鼓形蜗壳风道系统的俯视图；
图9为本发明实施例提供的鼓形蜗壳风道系统的俯视剖视图；
图10为本发明实施例提供的鼓形蜗壳风道系统的侧视图；
图11为本发明实施例提供的鼓形蜗壳风道系统的侧视剖视图；
图12为本发明实施例提供的鼓形蜗壳风道系统的正视图；
图13为本发明实施例提供的风道部件在整机上的局部剖视图；
图14为本发明实施例提供的风道部件在整机上的俯视剖视图。
其中，在图1-图6的现有技术中，10为蜗壳，101为蜗壳的外壳；20为风叶；30为导流圈；40为电机；
在图7-图14的本方案中，50为风道蜗壳，501为蜗壳的第一外壳，502为第二外壳；20为风叶；30为导流圈；40为电机；60为面板。
具体实施方式
本发明的核心在于公开了一种风道蜗壳，通过采用与圆筒形柜机匹配的弧形外壳，可以加大蜗壳内风腔的大小，提高风量和风道的效率。
下面将结合本发明实施例中的附图，对本发明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发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图7和图14，其中的图7-图12依次为本发明实施例提供的鼓形蜗壳风道系统的爆炸图、俯视图、俯视剖视图、侧视图、侧视剖视图和正视图；图13和图14为本发明实施例提供的风道部件在整机上的局部剖视图和俯视剖视图。
本发明实施例提供的风道蜗壳，其核心改进点在于，包括用于同风叶20的周面相对的第一外壳501，和用于同风机20的端面相对的第二外壳502；
其中，第一外壳501中用于同第二外壳502连接的第一边缘部分为弧形， 且弯曲方向为远离风道蜗壳50的内腔；即将第一外壳501中用于同第二外壳502连接的部分采用圆弧过渡，第一边缘部分的弧形结构区别于现有技术中的直角结构，用于同圆筒形柜机配合，其结构可以参照图7-图12所示。
从上述的技术方案可以看出，本发明实施例提供的风道蜗壳，将其周向的第一外壳501的第一边缘部分设计为弧形，且弯曲方向为远离风道蜗壳50的内腔，即将蜗壳的截面形状设计成鼓形；这种弧形蜗壳的外壳形状能够与圆形壳体的机型面板相匹配，其结构可以参照图13和图14所示，与现有技术中截面为长方形的直形状蜗壳相比，本方案提供的蜗壳腔体内的空间相比同样宽度的直形蜗壳更大，更大的风腔体积也就允许选用更大的风叶，提高风量的风道效率。
当蜗壳风道系统中的导流圈30在圆筒形柜机内居中安装时，蜗壳偏向圆形壳体机型面板60的一侧，此时第一外壳501第一边缘部分的单边弧形结构就能够匹配面板60单侧尺寸减小的结构。在本方案提供的具体实施例中，第一外壳501中用于同导流圈30配合的第二边缘部分为弧形，且弯曲方向为远离风道蜗壳50的内腔；即将第一外壳501沿轴向两侧的边缘部分均设计为外凸的弧形，能够同时匹配面板60两侧尺寸减小的结构，从而特别适用于蜗壳风道系统在圆筒形柜机内居中设置的形式。
为了进一步优化上述的技术方案，第一外壳501中位于其第一边缘部分和第二边缘部分之间的中间部分为弧形，且弯曲方向为远离风道蜗壳50的内腔；以更加匹配机型面板60的圆筒形结构，尽量加大蜗壳50风腔的体积。
作为优选，第一边缘部分、第二边缘部分和中间部分构成连贯的弧形，即第一外壳501整体为连贯的弧形结构，具体弧度半径取决于柜机形状。
在本方案提供的一种具体实施例中，第一边缘部分、第二边缘部分和中间部分位于同一正圆球面上，即第一外壳501正对于风叶20周面的整体位于同一正圆球面上，特别适用于横截面为正圆形的空调柜机，该正圆球面的外径略小于面板60内径。如图8-图11所示，第一外壳501的横截面位于同一圆周上。
在本方案提供的另一种具体实施例中，第一边缘部分、第二边缘部分和中间部分位于同一椭圆球面上，特别适用于横截面为椭圆形的空调柜机。
当然，以上只是给出了两种优选的实施方式，本领域技术人员能够根据圆 筒形柜机的实际情况，对第一外壳501做出相应的调整，比如采用适于匹配异型圆筒形柜机的弧形结构。
相应的，第一外壳501的内壳采用与其外壳配合的弧形结构。
作为优选，风道蜗壳50采用一体式结构，保证了其气密性。当然，风道蜗壳50还可以采用装配结构，即非一体式结构，以降低生产难度和成本。具体的，风道蜗壳50由第一外壳501和第二外壳502焊接或者铆接而成，即采用可靠的固定连接方式。为了便于装卸维护，风道蜗壳50还可以由第一外壳501和第二外壳502可拆卸装配而成。
本发明实施例还提供了一种鼓形蜗壳风道系统，包括风叶20、导流圈30、电机40和蜗壳，其核心改进点在于，蜗壳为上述的风道蜗壳50，其结构可以参照图7所示。本方案将风道蜗壳50的截面形状设计成鼓形，对于圆形壳体的机型面板60与蜗壳50的外壳形状匹配，都为弧形，蜗壳腔体内的空间相比同样宽度的直形蜗壳10更大，在空调运行时，送风效率更高，噪音更低。
本发明实施例还提供了一种空调，其柜机内设置有蜗壳风道系统，其核心改进点在于，柜机为圆筒形柜机，即其外壳采用弧形结构，横截面优选为正圆或者椭圆，蜗壳风道系统为上述的鼓形蜗壳风道系统。本方案将蜗壳的截面形状设计成鼓形，应用到圆筒形外观的柜机上，使蜗壳外形与整机外壳的形状相匹配，可以尽量加大风腔的体积，从而选用较大的风叶，提高风量的风道效率。
综上所述，本发明实施例提供了一种风道蜗壳，将蜗壳的截面形状设计成鼓形，应用到圆筒形外观的柜机上，使蜗壳的外壳形状能够与圆形壳体的机型面板相匹配，与现有技术中截面为长方形的直形状蜗壳相比，本方案提供的蜗壳腔体内的空间相比同样宽度的直形蜗壳更大，更大的风腔体积也就允许选用更大的风叶，在空调运行时，送风效率更高，噪音更低。本发明实施例还提供了一种应用上述风道蜗壳的鼓形蜗壳风道系统和空调。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在 其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (10)

  1. 一种风道蜗壳，其特征在于，包括用于同风叶(20)的周面相对的第一外壳(501)，和用于同所述风机(20)的端面相对的第二外壳(502)；
    所述第一外壳(501)中用于同所述第二外壳(502)连接的第一边缘部分为弧形，且弯曲方向为远离所述风道蜗壳(50)的内腔。
  2. 根据权利要求1所述的风道蜗壳，其特征在于，所述第一外壳(501)中用于同导流圈(30)配合的第二边缘部分为弧形，且弯曲方向为远离所述风道蜗壳(50)的内腔。
  3. 根据权利要求2所述的风道蜗壳，其特征在于，所述第一外壳(501)中位于其所述第一边缘部分和所述第二边缘部分之间的中间部分为弧形，且弯曲方向为远离所述风道蜗壳(50)的内腔。
  4. 根据权利要求3所述的风道蜗壳，其特征在于，所述第一边缘部分、所述第二边缘部分和所述中间部分构成连贯的弧形。
  5. 根据权利要求4所述的风道蜗壳，其特征在于，所述第一边缘部分、所述第二边缘部分和所述中间部分位于同一正圆球面上。
  6. 根据权利要求4所述的风道蜗壳，其特征在于，所述第一边缘部分、所述第二边缘部分和所述中间部分位于同一椭圆球面上。
  7. 根据权利要求1-6任意一项所述的风道蜗壳，其特征在于，所述风道蜗壳(50)为一体式结构。
  8. 根据权利要求1-6任意一项所述的风道蜗壳，其特征在于，所述风道蜗壳(50)由所述第一外壳(501)和所述第二外壳(502)焊接或者铆接而成。
  9. 一种鼓形蜗壳风道系统，包括风叶(20)、导流圈(30)、电机(40)和蜗壳，其特征在于，所述蜗壳为如权利要求1-8任意一项所述的风道蜗壳(50)。
  10. 一种空调，其柜机内设置有蜗壳风道系统，其特征在于，所述柜机为圆筒形柜机，所述蜗壳风道系统为如权利要求9所述的鼓形蜗壳风道系统。
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