WO2012171152A1 - 一种油烟机的风幕装置 - Google Patents

一种油烟机的风幕装置 Download PDF

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Publication number
WO2012171152A1
WO2012171152A1 PCT/CN2011/002062 CN2011002062W WO2012171152A1 WO 2012171152 A1 WO2012171152 A1 WO 2012171152A1 CN 2011002062 W CN2011002062 W CN 2011002062W WO 2012171152 A1 WO2012171152 A1 WO 2012171152A1
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WIPO (PCT)
Prior art keywords
hood
air
air curtain
air outlet
partition
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PCT/CN2011/002062
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English (en)
French (fr)
Inventor
胡国庆
俞挺
高云
茅忠群
诸永定
陈安林
Original Assignee
宁波方太厨具有限公司
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Application filed by 宁波方太厨具有限公司 filed Critical 宁波方太厨具有限公司
Publication of WO2012171152A1 publication Critical patent/WO2012171152A1/zh

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes
    • F24C15/2028Removing cooking fumes using an air curtain

Definitions

  • the invention relates to a range hood, in particular to an air curtain device of a range hood. Background technique
  • the current hood rate is still not very high. Basically, only 50% of the fumes in the kitchen can be extracted. In the kitchen cooking, as people move around and the air circulates, a large amount of oil smoke remains in the kitchen. diffusion. The main reason is that it is limited by the operating space.
  • the installation height of the hood is about 750 mm from the gas stove.
  • the effective suction distance of the general hood is 400 mm. Therefore, the hood can not completely absorb the fumes, and the soot may still overflow to The entire kitchen.
  • the range hood includes a casing, a range hood fan, a motor, a range hood switch, a range hood, a fume passage, a hood, etc.
  • the air curtain fan may be one or more, and the air outlet is provided on the left and right sides or the left and right sides and the front.
  • a "smoke-integrated machine with a wind curtain" as disclosed in Chinese Patent No. CN201322351Y, having an air curtain mechanism, the air curtain mechanism including a fan, a transition hose, a joint, and a duct having a strip-like wind
  • the air outlet is connected to the air outlet of the transition hose.
  • the air curtain device can generate a wind curtain through the air curtain mechanism to prevent the spread of the sleeve smoke while cooking.
  • the air curtain device of these structures requires an additional air duct to produce a wind curtain, which is not only complicated in structure and high in cost, but also disadvantageous to the miniaturization design of the range hood, and increases the external volume of the range hood.
  • the air outlets of these air curtain devices are independently distributed on both sides or the front side of the hood, which may cause uneven air outlet or poor air curtain effect. If you want to improve the air curtain effect, you need multiple sets of fans,
  • the technical problem to be solved by the present invention is to provide an air curtain device for a hood having a large air outlet hook, a wind curtain wind speed range and a simple structure.
  • an air curtain device of a range hood comprising a fan fixed in a casing of the hood, the bottom of the casing having a hood, the hood and the A space for the passage of wind is formed between the top plate and the outer side wall of the top of the casing, and the fan is located in the space
  • the collecting hood has an air outlet disposed along an outer side of the collecting hood
  • the housing has a partition extending along the outside of the hood to separate the air outlet from the fan, the partition extending from the hood toward the top plate and the top and top of the partition There is a gap therebetween, and a partition is formed between the partition and the outer side wall of the casing.
  • the air outlet has a width of 2 mm to 4 mm; the air passage has a width of 30 mm to 45 mm ; and a gap between the top of the partition and the top plate is 10 mm to 20 mm.
  • the partition plate extends in a direction perpendicular to the top plate.
  • the air outlet is an elongated air outlet extending along an outer side of the hood.
  • the partition and the air duct are formed at least on both sides of the collecting hood.
  • the air outlets are provided on both sides of the fume collecting hood and the collecting hood is close to the front end of the user. In order to be suitable for the kitchen of some hoods, the air outlet is disposed around the hood.
  • the invention has the advantages that: the air curtain structure not only does not need to be provided with an air curtain duct outside or inside the hood, and can provide a uniform air curtain and a wide range of outlets for the periphery of the hood.
  • the wind speed can keep the air evenly at low wind speed, and the structure is simple, the cost is low, and the appearance of the range hood is not affected, so that the hood can be made into a small volume, and the appearance of the hood is beautified.
  • Figure 1 is a schematic view of a range hood of the present invention.
  • Figure 2 is a front elevational view of the range hood of the present invention.
  • Fig. 3 is a partially enlarged schematic view showing a portion C of Fig. 2. detailed description
  • the hood air curtain device of the present invention includes an air curtain fan 2 disposed in the casing 1 of the hood, and the fan 2 may be disposed on both sides of the hood casing 1, the casing Below the 1 is a collection of hoods 11. Further, on both sides of the range hood 11 of the range hood and near the front end of the user, an air outlet 3 of a strip-shaped air curtain facing downward is provided.
  • the top of the casing 1 is a top plate 12 to which the fan 2 is fixed.
  • the fan 2 in the casing 1 is specifically provided with a wind source for the air curtain device, and is not a fan for the range hood of the range hood. Preferably, a fan is provided on both sides of the casing 1 to provide uniformity for the range hood. Wind curtain.
  • a partition 13 perpendicular to the top plate 12 is disposed, and the partition 13 is disposed between the fan 2 and the air outlet 3, and from the collecting hood 11 toward the top plate 12 Extending and having a gap between the top of the partition 13 and the top plate 12.
  • the partition plate 13 is formed on both sides and the front end of the hood 11 , and is formed at least on both sides of the hood 11 , corresponding to the air outlet 3 of the air curtain, and the partition 13 separates the air curtain vent 3 and Fan 2.
  • the partition 13 may not be perpendicular to the top plate 12 as long as it can separate the air outlet 3 from the fan 2 and have a long gap between the top plate 12.
  • the partition 13 and the outer side wall 14 of the hood 11 and the top plate 12 are equivalent to form a duct.
  • the air outlet 3 is located at the bottom of the air duct 15. Therefore, the wind sent from the fan 2 passes through the partition plate 13 and reaches the air duct 15.
  • the wind sent by the fan needs to pass through the long gap between the partition plate 13 and the top plate 12 to reach the air passage 15 Due to the air reversal and the Bernoulli principle, the static pressure in the duct 15 is increased and the dynamic pressure is reduced, and the dynamic pressure in the duct 15 can be substantially zero, so that the tuyere 3 can be given a uniform wind speed. .
  • the wind curtain device of the structure can also set a large wind speed of the air curtain, thereby improving the effect of the air curtain to isolate the soot.
  • the width of the air passage 15 is preferably 30 mm - 45 mm, the width of the air outlet 3 is preferably 2 mm - 4 mm, and the gap formed between the partition 13 and the top plate 12 is about 10 mm - 20 mm.
  • the width and length of the air outlet 3 can be adjusted according to the size and shape of the product, and the size of the gap is related to the area of the air outlet and the various indicators of the fan. Therefore, in such a range of air passages, air outlets, and clearances, the dynamic pressure at the air outlet 3 in the air duct 15 is substantially zero, and the static pressure is the same everywhere, so that the hood forms a uniform air curtain.
  • the partition plate 13 may further have a plurality of partitions which may be spaced apart, and the first partition plate extends from the fume collecting hood toward the top plate and has a gap with the top plate, the second The partition extends from the top plate toward the hood and leaves a gap with the hood, and so on.
  • the number of the partitions cannot be too large, and if the number is too large, the wind speed of the wind curtain will be affected.
  • the partition is equivalent to forming a plurality of obstacles in the form of a labyrinth from the fan to the air outlet, so that a static pressure environment is formed in the air duct 15 at the air outlet, so that the air outlet can provide a uniform and a wide range of wind speeds. Wind curtain.
  • the air curtain device is not only low in cost, simple in structure, but also provides a uniform air curtain with a wide range of wind speeds, and has high economic value.
  • test points, Al, A2, and A3 are respectively disposed at both ends and the middle of the air outlets 3 on both sides, and the front air outlets 3 are two air outlets extending side by side along the front end of the housing 1.
  • Test points, Bl, B2 and B3 are also set up at the end and in the middle.
  • Table 1 it is shown that the wind speeds of the respective test points where the air curtain device is not provided are not uniform, and the wind speeds of the respective test points in the range hood having the air curtain device of the present invention are substantially uniform. Therefore, the air curtain device of the present invention can provide a wind curtain with a uniform wind speed.
  • Table 2 shows the relationship between the width of the air duct of the air curtain device of the present invention and the size of the air outlet and the air outlet speed of the air outlet when the rotational speed and clearance of the fan are constant. From this, it can be seen that at each test point, the wind speed of the range hood without the air curtain apparatus of the present invention is still uneven, and the air outlet speeds of the respective test points provided with the air curtain apparatus of the present invention are relatively uniform. Moreover, the performance of the air duct width of 40 mm is better than the performance of the air duct width of 25 mm, and the wind speed of each test point is large, and the air outlet effect is good.
  • Fan A has a rated operating voltage range of 18V, a speed of 2000-2500 rpm (rpm), a wind volume of 40 cubic feet per minute (CFM), and a rated operating voltage of fan B.
  • the range is 12V, the speed is 3600rpm ⁇ 10%, the air volume is 130 CFM, and when the fan B is working at the operating voltage of 6.5V, 8V, 10V less than its rated voltage, the air volume of the fan B and its speed should work with The voltage is proportionally reduced. It can be seen that as long as the air curtain device is provided, as the air outlet speed of the fan 2 increases, the wind speed of each test point of the air curtain device increases uniformly, so that the air curtain device can provide uniform and wind speed Larger air curtains, and at any wind speed, the air outlet speed is relatively uniform, and the wind speed can be selected in a larger range.
  • the air curtain device of the invention does not need another peripheral pipe, and only needs to have a long strip between the collecting hood of the range hood and the casing, and the top of the partition forms a long strip between the top of the casing and the top plate of the casing.
  • the gap forms a strip-shaped air inlet, so that a static pressure-like air duct can be formed on the outer side of the partition plate, and the slit-type static pressure is uniformly supplied, so that the air outlet at the bottom of the air duct can not only provide a uniform air curtain. And the wind curtain is faster.
  • the size of the air outlet, the width of the air duct and the wind speed can be adjusted within a certain range according to the size and size of the range hood, which increases the use range of the air curtain device to a certain extent.
  • the air curtain device is not only simple in structure but also low in cost. , and is located in the range hood, does not affect the appearance of the range hood.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Ventilation (AREA)

Abstract

一种油烟机的风幕装置,包括固定于油烟机壳体(1)内的风机(2)和设置在壳体(1)底部的集烟罩(11),集烟罩(11)与壳体(1)顶部的顶板(12)以及外侧壁(14)之间形成一供风通过的空间,风机(2)就位于该空间内。集烟罩(11)上具有沿该集烟罩(11)的周边布置的出风口(3)。壳体(1)内具有沿集烟罩(11)周边延伸的隔板(13),其将出风口(3)和风机(2)隔开,隔板(13)从集烟罩(11)开始向着顶板(12)延伸并且隔板(13)的顶部与顶板(12)之间具有间隙,隔板(13)与壳体(1)的外侧壁之间(14)形成一风道(15)。通过该隔板(13)的设置,可以在集烟罩(1)的周边提供一均匀并且出风速度大的风幕,不但防止了油烟的外逸,而且结构简单,不用另外铺设风幕管道。

Description

一种油烟机的风幕装置
技术领域
本发明涉及一种油烟机, 特别是涉及一种油烟机的风幕装置。 背景技术
随着人们生活水平的提高, 对生活居室环境质量的 要求也越来越高。 对于中国家 庭来说, 厨房的油烟问题始终是一个大难点。 因而在中式烹饪的厨房设备中, 油烟机的 性能最被看重。
现有的油烟机排净率还是不是很高, 基本上只能抽取厨房里 50%以上的油烟, 在 厨房烹饪中, 随着人的走动和空气的流通, 大量的油烟仍然滞留在厨房中并且扩散。 其 主要原因是受到操作空间的限制, 油烟机安装高度距离燃气灶台大约 750毫米, 而一般 油烟机的有效吸风距离为 400毫米, 因此油烟机不能将油烟完全吸净, 油烟仍然可能外 溢至整个厨房。
现今技术人员想了很多方法来避免油烟的外溢,提高油烟机的吸净率, 比如增大油 烟机的体积或者增大集烟罩的面积来增大吸烟面积,但是增大面积无疑在空间上给使用 者增加了负担, 需要更大的厨房面积, 并且还使操作者使用不便。 还有的技术人员通过 加大油烟机的吸力来提高油烟的吸进率, 但是随着吸力的增加, 产生的能耗也大、 噪音 也大, 成本也较高, 特别是在气密性较强的房间内, 比如说冬天环境, 油烟机工作时会 在室内形成负压, 单纯增大吸油烟功率的做法效果不是特别明显。
因此, 现今出现了一些利用设置风幕装置来解决防止油烟扩散的问题的吸油烟机, 通过风幕装置产生风幕, 从而防止油烟逃逸, 提高油烟机的吸烟效果。 比如中国申请号 200510050696.X所公开的一种 "带有风幕的吸油烟机", 该油烟机包括外壳、 吸油烟风 机、 电机、 吸油烟开关、 吸油烟口、 油烟通道、 排烟口等, 在外壳内设有风幕风机以及 风道、 布风口。 风幕风机可以是一只或一只以上, 布风口设于左右两侧或者左右两侧以 及前面。 以及如中国专利 CN201322351Y所公开的一种 "具有风幕的烟灶一体机", 具 有风幕机构, 该风幕机构包括风机、 过渡软管、 接头和风管等部 风管具有条状的风 幕出风口, 所述风管与所述过渡软管的出风口连接。 该风幕装置可以通过风幕机构产生 风幕防止在烧菜的同时袖烟的扩散。但是这些结构的风幕装置鄱需要另外设有风道来产 生风幕, 不但结构复杂、 成本高, 而且不利于油烟机的小型化设计, 增加了油烟机的外 形体积。 而且这些风幕装置的出风口都独立分布在油烟机的两侧或者前侧, 可能导致出 风口出风不均匀、或者风幕效果不好等问题。如果为了提高风幕效果,则需要多组风扇、
- 1 - 确 认 本 导风的管路、 出风口转换口组成的系统, 导致产品成本高, 结构、控制系统复杂等问题。 发明内容
本发明所要解决的技术问题是提供一种出风均勾、风幕出风风速范围大并且结构简 单的油烟机的风幕装置。
本发明解决上述技术问题所采用的技术方案为:一种油烟机的风幕装置,包括固定 于油烟机壳体内的风机, 所述的壳体底部具有集烟罩, 该集烟罩与所述壳体顶部的顶板 以及外侧壁之间形成一供风通过的空间, 所述风机就位于所述空间内, 其特征在于: 所述集烟罩上具有沿该集烟罩的外侧布置的出风口,并且所述壳体内具有同样沿集 烟罩外侧延伸的隔板将所述出风口和所述风机隔开,所述隔板从集烟罩开始向着顶板延 伸并且所述隔板的顶部与顶板之间具有间隙, 所述隔板与壳体的外侧壁之间形成一风 道。通过该隔板的设置,就可以在集烟罩的周边提供一均匀并且出风速度范围大的风幕, 在低风速时也可以保持出风的均匀,不但防止了油烟的外逸,而且外形美观,结构简单, 不用另外铺设风幕管道。
优选地, 所述出风口的宽度为 2mm-4mm; 所述风道的宽度为 30mm-45mm; 所述 隔板的顶部与顶板之间的间隙为 10mm-20mm。
为了使风幕装置的出风效果最好, 所述隔板沿与所述顶板垂直的方向延伸。
优选地, 所述出风口为沿集烟罩的外侧延伸的长条形出风口。
为了保证风幕能够均匀地出风, 所述隔板和风道至少形成于所述集烟罩的两侧。 为了更好地防止油烟外逸,所述出风口设于所述集烟罩的两侧以及集烟罩靠近使用 者的前端。 为适用于某些油烟机中置的厨房, 所述出风口设于所述集烟罩的四周。
与现有技术相比, 本发明的优点在于: 该风幕结构不但不用在油烟机外侧或者内侧 另设风幕管道, 能够给油烟机的周边提供均匀出风的风幕以及较大范围的出风风速, 在 低风速时也可以保持出风的均匀, 而且结构简单、 成本低, 不影响油烟机的外观, 使得 油烟机能够制造成小体积, 美化了油烟机的外观。 附图说明
图 1为本发明油烟机的示意图。
图 2为本发明油烟机的正视图。
图 3为图 2中 C部的局部放大示意图。 具体实施方式
以下结合附图实施例对本发明作进一步详细描述。 本发明的油烟机风幕装置, 如图 1-3所示, 包括设置在油烟机的壳体 1内的风幕风 机 2, 该风机 2可以设置在油烟机壳体 1的两侧, 壳体 1的下方为一集烟罩 11。 并且在 油烟机集烟罩 11两侧以及靠近使用者的前端,设有朝下的条形的风幕的出风口 3。壳体 1的顶部为顶板 12, 风机 2就固定于所述顶板 12上。 该壳体 1内的风机 2专门为该风 幕装置提供风源, 并不是油烟机吸油烟的风机, 优选地, 在壳体 1的两侧各具有一个风 机就可以为该油烟机提供均匀的风幕。
在顶板 12与集烟罩 11之间, 设置有与所述顶板 12垂直的隔板 13, 该隔板 13设 于风机 2与出风口 3之间, 并且从所述集烟罩 11向着顶板 12延伸并且隔板 13的顶部 与顶板 12之间具有间隙。 该隔板 13形成于集烟罩 11的两侧以及前端, 至少形成于集 烟罩 11的两侧, 与风幕的出风口 3相对应设置, 并且隔板 13隔开风幕出风口 3以及风 机 2。 当然该隔板 13也可以不与顶板 12垂直, 只要能起到隔开出风口 3与风机 2并且 与顶板 12之间具有长条形的间隙即可。
参见图 3, 由于风机 2位于隔板 13的右侧, 而出风口 3位于隔板 13的左侧, 隔板 13与集烟罩 11的外侧壁 14以及顶板 12之间相当于形成一风道 15, 出风口 3位于风道 15的底部。因此从风机 2送出的风经过隔板 13后到达风道 15内, 由于隔板 13的作用, 风机送出的风需要经过隔板 13与顶板 12之间的长条形间隙后才能到达风道 15,由于空 气换向与伯努利原理, 使得在风道 15内的静压增大、 动压减小, 风道 15内的动压可以 基本为零, 因此能够给出风口 3提供均匀的风速。 而且该结构的风幕装置, 风幕的风速 也可以设的很大, 提高了风幕隔绝油烟的效果。
该风道 15的宽度优选为 30mm-45mm, 出风口 3的宽度优选为 2mm-4mm, 而隔板 13与顶板 12之间形成的间隙约为 10mm-20mm左右。 出风口 3的宽度和长度根据产品 的尺寸外形可以调整, 间隙的大小与出风口的面积、 风扇的各项指标相关。 因此在这样 的风道、 出风口、 以及间隙的范围内, 风道 15内的出风口 3处的动压基本为零, 各处 静压相同, 使该油烟机形成一个均匀的风幕。
作为本发明的另一个实施例, 该隔板 13还可以具有多个, 该多个隔板可以间隔设 置, 并且第一隔板从集烟罩向着顶板延伸并且与顶板之间具有间隙, 第二隔板从顶板向 着集烟罩延伸并且与集烟罩之间留有空隙, 依次类推, 当然该隔板的数量不能太多, 如 果数量太多就会影响风幕出风的风速,该多个隔板相当于在从风机到出风口之间形成多 个迷宫形式的障碍, 使得在出风口处的风道 15 内形成一静压环境, 进而使得出风口处 能够提供均匀、 风速范围较大的风幕。
该风幕装置不但成本低、结构简单, 而且能够提供均匀并且风速范围大的风幕, 具 有很高的经济价值。
如图 1 所示, 在两侧出风口 3 的两端以及中间分别设立三个测试点, Al、 A2和 A3,前端出风口 3为沿着壳体 1的前端并排延伸的两个出风口,在其中一个出风口的两 端以及中间也分别设立测试点, Bl、 B2和 B3。 分别测试这些测试点在各种不同的状态 和参数下的出风风速。 如表 1所示, 表明没有设置该风幕装置的各个测试点的风速并 不均匀,而有本发明的风幕装置的油烟机内的各个测试点的出风风速都基本均匀。因此, 本发明的风幕装置可以提供出风速度均匀的风幕。
表 1
Figure imgf000006_0001
表 2显示了在风机的转速、 间隙一定的情况下, 本发明的风幕装置的风道的宽度 与出风口大小的变化与出风口出风速度的关系。 由此可见, 在各个测试点, 没有设置本 发明的风幕装置的油烟机的风速依旧不均匀, 设置了本发明的风幕装置的各个测试点的 出风速度都相当均匀。并且风道宽度 40mm的性能优于风道宽度为 25mm的性能, 其各 个测试点的出风风速大, 出风效果好。
表 2
Figure imgf000006_0002
如表 3所示,显示了在同样的风道宽度和出风口宽度的情况下,风机 2的不同型号 与风幕出风口风速的关系, 风机 2的不同型号具有不同的出风速度, 其中实验采用的是 风机 A和风机 B,风机 A的额定工作电压范围为 18V ,转速为 2000-2500转 /每分钟 (rpm), 风量为 40立方英尺 /每分钟 (CFM),风机 B的额定工作电压范围为 12V,转速为 3600rpm ± 10%, 风量为 130 CFM, 并且该风机 B在不到其额定电压的 6.5V、 8V、 10V的工作 电压下工作时, 风机 B的风量以及其转速应该与工作电压成比例降低。 其中可以看到, 只要设置了风幕装置,随着风机 2 的出风速度的增加,风幕装置的各个测试点的风速也 随之均匀地增加, 因此该风幕装置可以提供均匀、 并且风速较大的风幕, 并且在任何风 速下, 出风速度都比较均匀, 风速的可选范围较大。
表 3 出风口风速 (m/s)
风机规格
Al A2 A3 Bl B2 B3 风机 A 18V 0.6 0.6 0.6-0.7 0.6-0.7 0.6-0.7 0.6 风机 B 6.5V 1.0 1.0 1.0 1.0 1.0 0.9 风机 B 8V 1.7 1.6 1.5 1.7 1.6 1.5 风机 B 10V 2.0 2.0 2.0 2.0 2.0 2.1 风机 B 12V 2.2 2.2 2.1 2.3 2.3 2.3-2.4 表 4显示了在风机出风速度一样的条件下,出风口的大小与各测试点风速之间的关 系。 从该表中可以看出, 这样的风幕装置, 不管出风口的长度怎样设置, 只要出风口宽 度一定, 出风速度均相同, 或者将出风口的部分区域遮挡住不出风, 仍然不会影响出风 口均匀出风。 也就是说该风道 15达到了完全的静压状态, 可以提供高效、 快速、 以及 均匀的风幕。
表 4
Figure imgf000007_0001
本发明的风幕装置,不需要另外外设管道,只需要在油烟机的集烟罩和壳体之间设 长条形的隔板, 隔板顶部与壳体的顶板之间形成长条形的间隙形成条形的进风口, 就可 以在隔板的外侧形成一类似静压的风道, 实现了条缝式静压均匀送风, 使风道底部的出 风口不但能够提供均匀的风幕, 而且风幕的速度较快。 出风口的大小、 风道的宽度以及 风速都可以根据油烟机的尺寸和大小在一定范围内进行调整, 一定程度上增加了该风幕 装置的使用范围, 该风幕装置不但结构简单、 成本低, 而且设于油烟机内, 不影响油烟 机的外观。

Claims

权 利 要 求
1、一种油烟机的风幕装置, 包括固定于油烟机壳体 (1)内的风机 (2), 所述的壳体 (1) 底部具有集烟罩 (11), 该集烟罩 (11)与所述壳体 (1)顶部的顶板 (12)以及外侧壁 (14)之间形 成一供风通过的空间, 所述风机 (2)就位于所述空间内, 其特征在于:
所述集烟罩 (11)上具有沿该集烟罩 (11)的外侧布置的朝下的出风口 (3), 并且所述壳 体 (1)内具有同样沿集烟罩 (11)外侧延伸的隔板 (13)将所述出风口 (3)和所述风机 (2)隔开, 所述隔板 (13)从集烟罩 (11)开始向着顶板 (12)延伸并且所述隔板 (13)的顶部与顶板 (12)之 间具有间隙, 所述隔板 (13)与壳体 (1)的外侧壁之间 (14)形成一风道 (15)。
2、如权利要求 1所述的风幕装置,其特征在于:所述出风口 (3)的宽度为 2mm-4nim。
3、如权利要求 1所述的风幕装置,其特征在于:所述风道 (15)的宽度为 30mm-45nim。
4、 如权利要求 1 所述的风幕装置, 其特征在于: 所述隔板 (13)的顶部与顶板 (12) 之间的间隙为 10mm-20mm。
5、 如权利要求 1 所述的风幕装置, 其特征在于: 所述隔板 (13)沿与所述顶板 (12) 垂直的方向延伸。
6、 如权利要求 1所述的风幕装置, 其特征在于: 所述出风口 (3)为沿集烟罩 (11)的 外侧延伸的长条形出风口。
7、 如权利要求 1所述的风幕装置, 其特征在于: 所述隔板 (13)和风道 (15)至少形成 于所述集烟罩 (11)的两侧。
8、 如权利要求 6或 7所述的风幕装置, 其特征在于: 所述出风口 (3)设于所述集烟 罩 (11)的两侧以及集烟罩 (11)靠近使用者的前端。
9、 如权利要求 6或 7所述的风幕装置, 其特征在于: 所述出风口 (3)设于所述集烟 罩的四周。
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