CN112343836B - Heat radiation fan for electric device - Google Patents

Heat radiation fan for electric device Download PDF

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Publication number
CN112343836B
CN112343836B CN202011244212.6A CN202011244212A CN112343836B CN 112343836 B CN112343836 B CN 112343836B CN 202011244212 A CN202011244212 A CN 202011244212A CN 112343836 B CN112343836 B CN 112343836B
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arc
plate
side plate
base plate
shaped
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CN112343836A (en
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程俊
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Shenzhen Fengwang Electronics Co.,Ltd.
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Jiangxi Zixuan Technology Co ltd
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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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a cooling fan for an electric device, which comprises a shell, an impeller, an air outlet, an upper side plate (11), a lower side plate (12), a ring side plate (13), an arc-shaped guide plate (14), blades (21), a hub (22), a first base plate (23), a main air inlet and an auxiliary air inlet, and is characterized in that: one end of the arc-shaped guide plate is connected with the upper side plate, the other end of the arc-shaped guide plate is not connected with the lower side plate, and a second substrate (24) is arranged at the radial outer peripheral end of the first substrate. This radiator fan passes through the cooperation design of arc guide plate and second base plate, can reduce the noise under the condition of guaranteeing the amount of wind, reduces the pressure oscillation of arc guide plate both sides.

Description

一种用于电气装置的散热风扇A cooling fan for electrical equipment

技术领域technical field

本发明涉及电气/电器装置/系统散热技术领域，具体涉及一种用于电气装置的散热风扇。The present invention relates to the technical field of heat dissipation of electrical/electrical devices/systems, in particular to a cooling fan for electrical devices.

背景技术Background technique

电气/电器装置/系统中的散热装置普遍采用散热风扇进行散热，散热风扇包括壳体1、叶轮2、出风口3、上侧板11、下侧板12、环侧板13、弧形导流板14、叶片21、轮毂22、第一基板23、主进风口F1、辅进风口F2（如图1-2所示）。但现有的散热风扇存在噪音较大、弧形导流板两侧的压力波动的问题。The heat dissipation device in the electrical/electrical device/system generally uses a heat dissipation fan for heat dissipation. The heat dissipation fan includes a casing 1, an impeller 2, an air outlet 3, an upper side plate 11, a lower side plate 12, a ring side plate 13, and an arc guide. The plate 14 , the blades 21 , the hub 22 , the first base plate 23 , the main air inlet F1 , and the auxiliary air inlet F2 (as shown in FIG. 1-2 ). However, the existing cooling fan has the problems of high noise and pressure fluctuation on both sides of the arc-shaped deflector.

发明内容SUMMARY OF THE INVENTION

本发明的目的是克服现有技术中存在的不足，提供一种用于电气装置的散热风扇，该散热风扇通过弧形导流板与第二基板的配合设计，能够在保证风量的情况下降低噪音，减少弧形导流板两侧的压力波动。The purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a cooling fan for an electrical device. The cooling fan can reduce the air volume while ensuring the air volume through the matching design of the arc deflector and the second substrate. Noise, reducing pressure fluctuations on both sides of the curved deflector.

为了实现上述目的，本发明采用的技术方案为 ：In order to achieve the above object, the technical scheme adopted in the present invention is:

一种用于电气装置的散热风扇，其包括壳体、叶轮、出风口、上侧板（11）、下侧板（12）、环侧板（13）、弧形导流板（14）、叶片（21）、轮毂（22）、第一基板（23）、主进风口（F1）、辅进风口（F2），壳体内腔内容置有叶轮，壳体的径向一侧具有出风口，壳体包括相对设置的上侧板、下侧板，上侧板与下侧板之间连接有环侧板，壳体内腔中设置有弧形导流板，叶轮包括多个叶片、轮毂、第一基板，多个叶片沿周向分布于第一基板上，第一基板连接于多个叶片的轴向下端部，多个叶片的径向内侧端与轮毂相连接，上侧板的中部具有主进风口，下侧板的中部具有辅进风口，主进风口与辅进风口相对设置，其特征在于：弧形导流板的一端与上侧板相连接，另一端与下侧板不连接，第一基板的径向外周端设置有第二基板（24）。A cooling fan for an electrical device, comprising a casing, an impeller, an air outlet, an upper side plate (11), a lower side plate (12), a ring side plate (13), an arc-shaped deflector (14), The blade (21), the hub (22), the first base plate (23), the main air inlet (F1), the auxiliary air inlet (F2), the impeller is arranged in the inner cavity of the casing, and the radial side of the casing has an air outlet, The casing includes an upper side plate and a lower side plate arranged oppositely, a ring side plate is connected between the upper side plate and the lower side plate, an arc-shaped deflector is arranged in the inner cavity of the casing, and the impeller includes a plurality of blades, a hub, a A base plate, a plurality of blades are distributed on a first base plate in the circumferential direction, the first base plate is connected to the axial lower end of the plurality of blades, the radial inner end of the plurality of blades is connected to the hub, and the middle part of the upper plate has a main The air inlet, the middle part of the lower side plate has an auxiliary air inlet, and the main air inlet and the auxiliary air inlet are arranged opposite to each other. The radially outer peripheral end of the first base plate is provided with a second base plate (24).

进一步地，所述弧形导流板的轴向下端与下侧板之间具有第一轴向间隙H1，弧形导流板的轴向下端与第一基板之间具有第二轴向间隙H2，H2＜H1。Further, there is a first axial gap H1 between the axial lower end of the arc-shaped baffle and the lower side plate, and a second axial gap H2 between the axial lower end of the arc-shaped baffle and the first base plate , H2 < H1.

进一步地，所述H2=（0.1-0.2）H1。Further, the H2=(0.1-0.2) H1.

进一步地，所述第二基板的靠近弧形导流板的一侧面设置有弧形导流部（25），弧形导流部能够将其上侧的部分气流经第二轴向间隙H2引导至弧形导流板的远离弧形导流部的一侧。Further, a side surface of the second base plate close to the arc-shaped air guide plate is provided with an arc-shaped air-guiding part (25), and the arc-shaped air-guiding part can guide part of the air flow on its upper side through the second axial gap H2 to the side of the arc deflector away from the arc deflector.

进一步地，所述第二基板与第一基板一体成型，弧形导流部为半圆弧形导流部，弧形导流部靠近弧形导流板的径向内侧而设置。Further, the second base plate and the first base plate are integrally formed, the arc-shaped air-guiding portion is a semi-circular arc-shaped air-guiding portion, and the arc-shaped air-guiding portion is disposed close to the radial inner side of the arc-shaped air guide plate.

进一步地，所述弧形导流板的上游端的内径尺寸与第二基板的外径尺寸大体上相等。Further, the inner diameter of the upstream end of the arc deflector is substantially equal to the outer diameter of the second base plate.

进一步地，所述弧形导流板的上游端的内径尺寸小于第二基板的外径尺寸，弧形导流板的上游端的外径尺寸大于第二基板的外径尺寸。Further, the inner diameter of the upstream end of the arc-shaped baffle is smaller than the outer diameter of the second base plate, and the outer diameter of the upstream end of the arc-shaped baffle is larger than the outer diameter of the second base plate.

进一步地，所述第二基板的径向外端部设置有倾斜部（26），倾斜部与弧形导流板下端面的距离从径向内侧至径向外侧逐渐增大。Further, the radially outer end portion of the second base plate is provided with an inclined portion (26), and the distance between the inclined portion and the lower end surface of the arc-shaped deflector gradually increases from the radially inner side to the radially outer side.

本发明的一种用于电气装置的散热风扇，通过弧形导流板与第二基板的配合设计，能够在保证风量的情况下降低噪音，减少弧形导流板两侧的压力波动。A cooling fan for an electrical device of the present invention can reduce noise and reduce pressure fluctuations on both sides of the arc-shaped guide plate while ensuring the air volume through the cooperating design of the arc-shaped guide plate and the second base plate.

附图说明Description of drawings

图 1 为现有技术散热风扇主视结构示意图；FIG. 1 is a schematic diagram of the structure of a front view of a cooling fan in the prior art;

图 2为现有技术散热风扇俯视结构示意图；2 is a schematic top view structure diagram of a cooling fan in the prior art;

图3为本发明用于电气装置的散热风扇主视结构示意图；FIG. 3 is a schematic front view of the structure of a cooling fan used in an electrical device according to the present invention;

图4为本发明用于电气装置的散热风扇俯视结构示意图；FIG. 4 is a schematic top view structural diagram of a cooling fan used for an electrical device according to the present invention;

图5为本发明用于电气装置的散热风扇另一实施例结构示意图。FIG. 5 is a schematic structural diagram of another embodiment of a cooling fan for an electrical device according to the present invention.

图中：壳体1、叶轮2、出风口3、上侧板11、下侧板12、环侧板13、弧形导流板14、叶片21、轮毂22、第一基板23、第二基板24、弧形导流部25、倾斜部26、主进风口F1、辅进风口F2。In the figure: shell 1, impeller 2, air outlet 3, upper side plate 11, lower side plate 12, ring side plate 13, arc deflector 14, blade 21, hub 22, first base plate 23, second base plate 24. The arc guide portion 25, the inclined portion 26, the main air inlet F1, and the auxiliary air inlet F2.

具体实施方式Detailed ways

为使本发明实施例的目的、技术方案和优点更加清楚，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作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

下面结合附图对本发明作进一步详细说明。The present invention will be further described in detail below in conjunction with the accompanying drawings.

如图3-5所示，一种用于电气装置的散热风扇，其包括壳体1、叶轮2、出风口3、上侧板11、下侧板12、环侧板13、弧形导流板14、叶片21、轮毂22、第一基板23、主进风口F1、辅进风口F2，壳体1内腔内容置有叶轮2，壳体1的径向一侧具有出风口3，壳体1包括相对设置的上侧板11、下侧板12，上侧板11与下侧板12之间连接有环侧板13，壳体1内腔中设置有弧形导流板14，叶轮2包括多个叶片21、轮毂22、第一基板23，多个叶片21沿周向分布于第一基板23上，第一基板23连接于多个叶片21的轴向下端部，多个叶片21的径向内侧端与轮毂22相连接，上侧板11的中部具有主进风口F1，下侧板12的中部具有辅进风口F2，主进风口F1与辅进风口F2相对设置，其特征在于：弧形导流板14的一端与上侧板11相连接，另一端与下侧板12不连接，第一基板23的径向外周端设置有第二基板24。As shown in Figures 3-5, a cooling fan for an electrical device includes a casing 1, an impeller 2, an air outlet 3, an upper side plate 11, a lower side plate 12, a ring side plate 13, and an arc-shaped guide. The plate 14, the blades 21, the hub 22, the first base plate 23, the main air inlet F1, the auxiliary air inlet F2, the impeller 2 is housed in the inner cavity of the casing 1, the radial side of the casing 1 has the air outlet 3, and the casing 1 includes an upper side plate 11 and a lower side plate 12 arranged oppositely, a ring side plate 13 is connected between the upper side plate 11 and the lower side plate 12, an arc-shaped deflector 14 is arranged in the inner cavity of the housing 1, and the impeller 2 It includes a plurality of blades 21 , a hub 22 and a first base plate 23 . The plurality of blades 21 are distributed on the first base plate 23 in the circumferential direction. The first base plate 23 is connected to the axial lower end of the plurality of blades 21 . The radially inner end is connected with the hub 22, the middle part of the upper side plate 11 has a main air inlet F1, the middle part of the lower side plate 12 has an auxiliary air inlet F2, the main air inlet F1 and the auxiliary air inlet F2 are arranged oppositely, and are characterized in that: One end of the arc-shaped deflector 14 is connected to the upper side plate 11 , and the other end is not connected to the lower side plate 12 . The radial outer peripheral end of the first base plate 23 is provided with a second base plate 24 .

进一步地，弧形导流板14的轴向下端与下侧板12之间具有第一轴向间隙H1，弧形导流板14的轴向下端与第一基板23之间具有第二轴向间隙H2，H2＜H1，且H2=（0.1-0.2）H1，优选地0.13-0.15。Further, there is a first axial gap H1 between the axial lower end of the arc-shaped deflector 14 and the lower side plate 12 , and a second axial gap H1 exists between the axial lower end of the arc-shaped deflector 14 and the first base plate 23 . Gap H2, H2<H1, and H2=(0.1-0.2) H1, preferably 0.13-0.15.

本发明的一种用于电气装置的散热风扇，通过弧形导流板14与第二基板24的配合设计，能够在保证风量的情况下降低噪音，减少弧形导流板14两侧的压力波动。A cooling fan for an electrical device of the present invention can reduce noise and reduce the pressure on both sides of the arc deflector 14 while ensuring the air volume through the cooperating design of the arc deflector 14 and the second substrate 24 . fluctuation.

进一步地，第二基板24的靠近弧形导流板14的一侧面设置有弧形导流部25，弧形导流部25能够将其上侧的部分气流经第二轴向间隙H2引导至弧形导流板14的远离弧形导流部25的一侧（左侧），从而能够减少弧形导流板14两侧的压力波动。第二基板24与第一基板23一体成型，弧形导流部25为半圆弧形导流部，弧形导流部25靠近弧形导流板14的径向内侧而设置。Further, a side surface of the second base plate 24 close to the arc-shaped air guide plate 14 is provided with an arc-shaped air-guiding portion 25, and the arc-shaped air-guiding portion 25 can guide part of the air flow on the upper side thereof through the second axial gap H2 to the air guide. The side (left side) of the arc-shaped baffle 14 away from the arc-shaped baffle 25 can reduce the pressure fluctuation on both sides of the arc-shaped baffle 14 . The second base plate 24 is integrally formed with the first base plate 23 , and the arc-shaped air guide portion 25 is a semi-circular arc-shaped air guide portion.

如图3-4所示，进一步地，弧形导流板14的上游端的内径尺寸与第二基板24的外径尺寸大体上相等（“大体上”可按常规的机械尺寸误差范围进行规范，如误差范围为5%以内）。As shown in Figs. 3-4, further, the inner diameter of the upstream end of the arc deflector 14 is substantially equal to the outer diameter of the second base plate 24 ("substantially" can be regulated within the conventional mechanical dimension error range, If the error range is within 5%).

如图5所示，在另一实施例中，弧形导流板14的上游端的内径尺寸小于第二基板24的外径尺寸，弧形导流板14的上游端的外径尺寸大于第二基板24的外径尺寸；第二基板24的径向外端部设置有倾斜部26，倾斜部26与弧形导流板14下端面的距离从径向内侧至径向外侧逐渐增大。本发明的一种用于电气装置的散热风扇，通过弧形导流板14与第二基板24的配合设计，能够在保证风量的情况下进一步地降低噪音，减少弧形导流板14两侧的压力波动。As shown in FIG. 5 , in another embodiment, the inner diameter of the upstream end of the arc baffle 14 is smaller than the outer diameter of the second base plate 24 , and the outer diameter of the upstream end of the arc baffle 14 is larger than that of the second base plate 24; the radially outer end of the second base plate 24 is provided with an inclined portion 26, and the distance between the inclined portion 26 and the lower end surface of the arc deflector 14 gradually increases from the radially inner side to the radially outer side. A cooling fan for an electrical device of the present invention can further reduce noise while ensuring the air volume through the cooperating design of the arc-shaped deflector 14 and the second substrate 24, and reduce the amount of noise on both sides of the arc-shaped deflector 14. pressure fluctuations.

本发明的一种用于电气装置的散热风扇，通过弧形导流板与第二基板的配合设计，能够在保证风量的情况下降低噪音，减少弧形导流板两侧的压力波动。A cooling fan for an electrical device of the present invention can reduce noise and reduce pressure fluctuations on both sides of the arc-shaped guide plate while ensuring the air volume through the cooperating design of the arc-shaped guide plate and the second base plate.

上述实施方式是对本发明的说明，不是对本发明的限定，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的保护范围由所附权利要求及其等同物限定。The above-mentioned embodiment is an illustration of the present invention, not a limitation of the present invention. It can be understood that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The protection scope of the present invention It is defined by the appended claims and their equivalents.

Claims (6)

1.一种用于电气装置的散热风扇，其包括壳体、叶轮、出风口、上侧板（11）、下侧板（12）、环侧板（13）、弧形导流板（14）、叶片（21）、轮毂（22）、第一基板（23）、主进风口（F1）、辅进风口（F2），壳体内腔内容置有叶轮，壳体的径向一侧具有出风口，壳体包括相对设置的上侧板、下侧板，上侧板与下侧板之间连接有环侧板，壳体内腔中设置有弧形导流板，叶轮包括多个叶片、轮毂、第一基板，多个叶片沿周向分布于第一基板上，多个叶片的径向内侧端与轮毂相连接，上侧板的中部具有主进风口，下侧板的中部具有辅进风口，主进风口与辅进风口相对设置，其特征在于：弧形导流板的一端与上侧板相连接，另一端与下侧板不连接，第一基板的径向外周端设置有第二基板（24）；所述弧形导流板的轴向下端与下侧板之间具有第一轴向间隙H1，弧形导流板的轴向下端与第一基板之间具有第二轴向间隙H2，H2＜H1，且所述H2=（0.1-0.2）H1。1. A cooling fan for an electrical device, comprising a casing, an impeller, an air outlet, an upper side plate (11), a lower side plate (12), a ring side plate (13), an arc-shaped deflector (14) ), blades (21), hub (22), first base plate (23), main air inlet (F1), auxiliary air inlet (F2), an impeller is housed in the inner cavity of the casing, and the radial side of the casing has an outlet The tuyere, the casing includes an upper side plate and a lower side plate arranged oppositely, a ring side plate is connected between the upper side plate and the lower side plate, an arc-shaped deflector is arranged in the inner cavity of the casing, and the impeller includes a plurality of blades, a hub , the first base plate, a plurality of blades are distributed on the first base plate in the circumferential direction, the radial inner end of the plurality of blades is connected with the hub, the middle part of the upper side plate has a main air inlet, and the middle part of the lower side plate has an auxiliary air inlet , the main air inlet and the auxiliary air inlet are arranged opposite to each other. A base plate (24); there is a first axial gap H1 between the axial lower end of the arc-shaped air guide plate and the lower side plate, and a second axial gap H1 is formed between the axial lower end of the arc-shaped air guide plate and the first base plate Gap H2, H2<H1, and said H2=(0.1-0.2)H1. 2.如权利要求1所述的一种用于电气装置的散热风扇，其特征在于，所述第二基板的靠近弧形导流板的一侧面设置有弧形导流部（25），弧形导流部能够将其上侧的部分气流经第二轴向间隙H2引导至弧形导流板的远离弧形导流部的一侧。2 . The cooling fan for an electrical device according to claim 1 , wherein an arc-shaped air-guiding portion ( 25 ) is provided on one side of the second base plate close to the arc-shaped air-guiding plate. The air guide part can guide part of the air flow on its upper side to the side of the arc guide plate away from the arc guide part through the second axial gap H2. 3.如权利要求2所述的一种用于电气装置的散热风扇，其特征在于，所述第二基板与第一基板一体成型，弧形导流部为半圆弧形导流部，弧形导流部靠近弧形导流板的径向内侧而设置。3 . The cooling fan for an electrical device according to claim 2 , wherein the second base plate and the first base plate are integrally formed, and the arc-shaped air-guiding portion is a semi-circular arc-shaped air-guiding portion. 4 . The air guide portion is provided close to the radially inner side of the arc-shaped air guide plate. 4.如权利要求3所述的一种用于电气装置的散热风扇，其特征在于，所述弧形导流板的上游端的内径尺寸与第二基板的外径尺寸大体上相等。4 . The cooling fan of claim 3 , wherein the inner diameter of the upstream end of the arc-shaped deflector is substantially equal to the outer diameter of the second substrate. 5 . 5.如权利要求4所述的一种用于电气装置的散热风扇，其特征在于，所述弧形导流板的上游端的内径尺寸小于第二基板的外径尺寸，弧形导流板的上游端的外径尺寸大于第二基板的外径尺寸。5. A cooling fan for an electrical device according to claim 4, wherein the inner diameter of the upstream end of the arc-shaped deflector is smaller than the outer diameter of the second substrate, and the The outer diameter of the upstream end is larger than the outer diameter of the second substrate. 6.如权利要求5所述的一种用于电气装置的散热风扇，其特征在于，所述第二基板的径向外端部设置有倾斜部（26），倾斜部与弧形导流板下端面的距离从径向内侧至径向外侧逐渐增大。6 . The cooling fan for an electrical device according to claim 5 , wherein a radially outer end portion of the second base plate is provided with an inclined portion ( 26 ), and the inclined portion is connected to an arc-shaped deflector. 7 . The distance of the lower end surface gradually increases from the radially inner side to the radially outer side.
CN202011244212.6A 2020-11-10 2020-11-10 Heat radiation fan for electric device Active CN112343836B (en)

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CN114607644B (en) * 2022-04-01 2023-11-03 石家庄东方热电热力工程有限公司 Heat radiation unit for electric device
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CN2344595Y (en) * 1998-05-28 1999-10-20 嘉兴市天地植保机械厂 Centrifugal fan shell
CN1793665A (en) * 2006-01-12 2006-06-28 上海交通大学 Low noise axial fan with rotary deflecting ring
JP2010084701A (en) * 2008-10-01 2010-04-15 Daikin Ind Ltd Blowing device
CN207297462U (en) * 2017-04-18 2018-05-01 深圳沃海森科技有限公司 Scroll casing type wind turbine for ultrathin constant temperature and humidity perseverance oxygen perseverance clear height iron top set air-conditioning

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Publication number Priority date Publication date Assignee Title
CN2344595Y (en) * 1998-05-28 1999-10-20 嘉兴市天地植保机械厂 Centrifugal fan shell
CN1793665A (en) * 2006-01-12 2006-06-28 上海交通大学 Low noise axial fan with rotary deflecting ring
JP2010084701A (en) * 2008-10-01 2010-04-15 Daikin Ind Ltd Blowing device
CN207297462U (en) * 2017-04-18 2018-05-01 深圳沃海森科技有限公司 Scroll casing type wind turbine for ultrathin constant temperature and humidity perseverance oxygen perseverance clear height iron top set air-conditioning

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