WO2018032606A1 - 油烟机 - Google Patents

油烟机 Download PDF

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Publication number
WO2018032606A1
WO2018032606A1 PCT/CN2016/103409 CN2016103409W WO2018032606A1 WO 2018032606 A1 WO2018032606 A1 WO 2018032606A1 CN 2016103409 W CN2016103409 W CN 2016103409W WO 2018032606 A1 WO2018032606 A1 WO 2018032606A1
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WO
WIPO (PCT)
Prior art keywords
jet outlet
soot
outlet
hood
fume
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Application number
PCT/CN2016/103409
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English (en)
French (fr)
Inventor
张辉
Original Assignee
美的集团股份有限公司
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Publication date
Application filed by 美的集团股份有限公司 filed Critical 美的集团股份有限公司
Publication of WO2018032606A1 publication Critical patent/WO2018032606A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes

Definitions

  • the invention relates to the field of electrical appliances, and in particular to a range hood.
  • the range hood in the related art cannot effectively utilize the range of the range, and the effect of the oil smoke is poor.
  • the present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, the present invention proposes a range hood that has a good effect of sucking oil.
  • a range hood includes: a fume hood, wherein the fume hood is provided with a soot chamber, and two ends of the fume chamber are respectively provided with a soot outlet and a soot inlet; and a flanging structure, the flanging structure is set a gas chamber communicating with the oil fume chamber is disposed on the bottom wall of the fume hood, the gas cavity having a gas inlet and a jet outlet, the jet outlet being adjacent to the soot inlet It is provided that, in the flow direction of the gas, the jet outlet extends obliquely toward the direction of the soot outlet and the flow cross-sectional area of the jet outlet gradually decreases; a fan for discharging air into the gas chamber.
  • the jet outlet is oriented in the flow direction of the gas.
  • the direction of the outlet of the soot is obliquely extended and the flow cross-sectional area of the jet outlet is gradually reduced, thereby facilitating control of the flow direction of the soot, the range of the low pressure region, and optimizing the pressure in the low pressure region, so that the oil smoke flows into the oil smoke chamber and is further discharged from the oil smoke outlet.
  • the jet end of the jet outlet has a width dimension of H, H satisfying: 1 mm ⁇ H ⁇ 50 mm.
  • the longitudinal section of the jet outlet is formed in a generally arcuate shape, a wing shape or a trapezoidal shape.
  • the jet outlet is provided with a shaped member, the two ends of which are respectively in contact with the inner peripheral wall of the jet outlet.
  • the hood further includes an air filter, the air filter being located at the intake end of the fan.
  • the outlet end of the fan is connected to the gas inlet through an intake pipe.
  • the jet outlet in the circumferential direction of the soot chamber, has an extension length that is the same as the extension length of the flange structure.
  • the flanged structure is formed into a closed loop structure.
  • the cross section of the fume hood is formed in a circular shape or a rectangular shape.
  • the hood is a side suction hood.
  • FIG. 1 is a perspective view of a range hood according to some embodiments of the present invention.
  • FIG. 2 is a partial structural schematic view of a range hood according to some embodiments of the present invention.
  • FIG. 3 is a schematic illustration of a jet outlet of a range hood, in accordance with some embodiments of the present invention.
  • FIG. 4 is a schematic illustration of a jet outlet of a range hood in accordance with further embodiments of the present invention.
  • a fume hood 1 a soot chamber 11; a soot inlet 111; a soot outlet 112;
  • Flanging structure 2 gas chamber 21; gas inlet 22; jet outlet 23;
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • a hood 100 in accordance with an embodiment of the present invention will now be described with reference to Figures 1-4, which may be used to pump soot.
  • the hood 100 can be installed above the cooktop.
  • the hood 100 can be opened to facilitate the hood 100 to suck the fumes generated during the cooking.
  • a hood 100 may include: a hood 1, a flange structure 2, and a fan 4.
  • the oil hood 1 is provided with a fume chamber 11 , and the two ends of the fume chamber 11 are respectively provided with a soot outlet 112 and a soot inlet 111.
  • the upper end and the lower end of the fume chamber 11 are respectively provided with a soot outlet 112 and a soot inlet 111, and the soot outlet 112 is connected to Outdoor environment.
  • the soot cover 1 can be placed directly above the cooktop.
  • the soot outlet 112 is connected to the outdoor environment through the exhaust pipe 6.
  • the soot can enter the soot chamber 11 through the soot inlet 111 and then be discharged from the soot outlet 112 into the outdoor environment.
  • the soot inlet 111 of the soot chamber 11 may be located directly above the cooktop.
  • the range hood 100 is a ceiling-mounted range hood 100; of course, the soot inlet 111 of the soot chamber 11 may also be located on the side of the cooktop such as the range hood 100.
  • the side suction range hood 100 it can be understood that when the range hood 100 is the side suction type hood 100, the flow direction of the soot will turn during the flow of the soot from the soot inlet 111 to the soot outlet 112.
  • the cross-sectional area of the soot chamber 11 gradually decreases in the direction from the soot inlet 111 to the soot outlet 112, so that when the soot is circulated in the soot chamber 11, it can be guaranteed to some extent.
  • the flow rate of the soot is so that the soot is discharged into the outdoor environment through the soot outlet 112.
  • the shape of the soot chamber 11 is substantially the same as the shape of the fume hood 1, and the cross-sectional area of the fume hood 1 is gradually reduced when the cross-sectional area of the fume chamber 11 is gradually decreased in the direction from the fume inlet 111 to the fume outlet 112. This is reduced, thereby facilitating the reduction of the volume of the soot cover 1, thereby reducing the volume of the range hood 100.
  • the soot cover 1 is formed in a flared shape, and the soot chamber 11 is also formed in a flared shape.
  • the flange structure 2 is disposed on the bottom wall of the oil hood 1 , and the flange structure 2 is provided with a gas chamber 21 communicating with the oil smoke chamber 11 .
  • the gas chamber 21 has a gas inlet 22 and a jet outlet 23 .
  • the gas inlet 22 is located on the top or bottom wall of the flange structure 2
  • the jet outlet 23 is located on the side wall of the flange structure 2.
  • the jet outlet 23 is disposed adjacent to the soot inlet 111, and in the flow direction of the gas, the jet outlet 23 extends obliquely toward the direction toward the soot outlet 112 and the flow cross-sectional area of the jet outlet 23 gradually decreases.
  • the jet outlet 23 when the hood 100 is the ceiling-mounted hood 100, as shown in FIGS. 1 to 4, in the flow direction of the gas, the jet outlet 23 extends obliquely upward and the flow cross-sectional area of the jet outlet 23 gradually decreases.
  • the inner surface near the jet outlet 23 (the vicinity of the jet outlet 11 of the soot chamber 11) The inner surface) forms the Coanda surface 7.
  • the air is discharged from the jet outlet 23 to produce a Coanda effect, thereby changing the direction of air flow, and the air flows along the Coanda surface 7 in the soot.
  • a low pressure zone is created at the location of the chamber 11 adjacent the jet outlet 23, and the soot is drawn into the low pressure zone and passes through the soot chamber 11 together with the air ejected from the jet outlet 23, and is discharged from the soot outlet 112 into the outdoor environment.
  • the flow cross-sectional area of the jet outlet 23 is gradually reduced in the flow direction of the air, which is advantageous for increasing the flow velocity of the air, thereby facilitating further control of the range of the low-pressure region and
  • the pressure in the low pressure region is optimized to optimize the suction effect of the range hood 100 on the soot.
  • the fan 4 discharges air into the gas chamber 21.
  • the outlet end of the blower 4 is connected to the gas inlet 22, or in other embodiments, the inlet end of the blower 4 is in communication with the jet outlet 23.
  • the air is discharged into the gas chamber 21 by the blower 4, so that the range hood 100 can be easily sucked.
  • the fan 4 when the user uses the range hood 100, the fan 4 is activated and discharges air into the gas chamber 21, and the air in the gas chamber 21 passes through the jet outlet 23, adjacent to the jet outlet 23 of the soot chamber 11.
  • the inner surface forms the Coanda surface 7, so that a low pressure zone is generated at the position of the soot chamber 11 adjacent to the jet outlet 23, and the soot generated by the user when cooking is sucked into the low pressure zone through the soot inlet, and the soot in the low pressure zone Spraying from the jet outlet 23
  • the exiting air passes through the oil smoke chamber 11 and is discharged from the oil smoke outlet 112 into the outdoor environment.
  • the flow cross-sectional area of the jet outlet 23 is gradually reduced in the flow direction of the air, which is advantageous for increasing the flow velocity of the air, thereby facilitating further control of the range and optimization of the low-pressure region.
  • the pressure in the low pressure region optimizes the suction effect of the range hood 100 on the soot.
  • the jet outlet 23 is inclined to extend toward the direction of the soot outlet 112 and the flow cross-sectional area of the jet outlet 23 is gradually reduced, thereby facilitating control of the flow direction of the soot, the range of the low pressure region, and optimizing the pressure of the low pressure region, so that the flow of the soot
  • the soot chamber 11 is further discharged from the soot outlet 112 into the outdoor environment, which in turn facilitates optimizing the suction effect of the range hood 100.
  • the fan 4 is connected to the gas inlet 22 of the gas chamber 21 to cause the fan 4 to discharge air into the gas chamber 21. Further, the air outlet end of the fan 4 is connected to the gas inlet 22 through the air inlet pipe 41, whereby the fan 4 and the oil hood 1 are separately arranged, which can avoid direct contact between the fan 4 and the oil smoke, and avoid the fan 4 and the fan 4
  • the impeller is polluted by the oil smoke, thereby facilitating the maintenance of the cleanliness of the fan, and is also beneficial for reducing the volume of the fume hood 1 while the fan 4 and the fume hood 1 are disposed separately, and the fan 4 can be disposed away from the fume hood 1
  • the fan 4 is installed outdoors or the fan 4 is disposed at a position away from the fume hood 1 so that when the user uses the hood 100, it is advantageous to reduce the noise of the user's ear and improve the comfort of the user when using the hood 100.
  • the hood 100 further includes an air filter 5 that is located at the intake end of the blower 4.
  • the air filter 5 can filter dust, foreign matter, and the like to prevent dust, foreign matter, and the like from entering the fan 4.
  • the jet end of the jet outlet 23 has a width dimension H, and H satisfies: 1 mm ⁇ H ⁇ 50 mm.
  • H satisfies: 1 mm ⁇ H ⁇ 50 mm.
  • the minimum distance between the inner top wall and the inner bottom wall of the jet outlet 23 is the width dimension of the jet end of the jet outlet 23.
  • the longitudinal section of the jet outlet 23 is formed into a generally arcuate shape, a wing shape or a trapezoidal shape.
  • the longitudinal cross sections of the inner top wall of the jet outlet 23 and the inner bottom wall of the jet outlet 23 are each formed in an arc shape.
  • the longitudinal cross sections of the inner top wall and the inner bottom wall of the jet outlet 23 are straight sections, respectively.
  • the longitudinal section of the jet outlet 23 can also be formed into other shapes.
  • the longitudinal sections of the inner top wall and the inner bottom wall of the jet outlet 23 are respectively formed into an arc shape and
  • the straight section can be such that the jet outlet 23 extends obliquely toward the direction of the soot outlet 112 and the flow cross-sectional area of the jet outlet 23 gradually decreases in the flow direction of the gas, and can be in the vicinity of the jet outlet 11 of the soot chamber 11
  • the surface forms the Coanda surface 7 as it is.
  • a shaped member 3 is provided at the jet outlet 23, and both ends of the shaped member 3 are in contact with the inner peripheral wall of the jet outlet 23, respectively. Specifically, since the size of the jet outlet 23 is small, by providing the shaped member 3 at the jet outlet 23, it is possible to ensure that the actual size at the jet outlet 23 is the design size and the deformation of the jet outlet 23 is prevented.
  • the shaped member 3 and the jet outlet 23 are integrally formed.
  • the top of the shaped member 3 and the jet outlet 23 The wall is integrally formed, or the shaped member 3 is integrally formed with the bottom wall of the jet outlet 23.
  • the shaped member 3 is coupled between the inner top wall and the inner bottom wall of the jet outlet 23 and integrally formed with the top and bottom walls of the jet outlet 23.
  • the plurality of shaped members 3 are disposed in the circumferential direction of the soot chamber 11 so that the plurality of shaped members 3 are spaced apart from each other in the extending direction of the jet outlet 23, thereby ensuring the size of the jet outlet 23 while still ensuring the size of the jet outlet 23 It is convenient for air to be ejected from the jet outlet 23.
  • the plurality of shaped members 3 are evenly spaced apart in the direction of extension of the jet outlets 23.
  • the cross section of the soot cover 1 is formed in a circular shape or a rectangular shape.
  • the soot cover 1 is formed in a truncated cone shape or a trumpet shape
  • the cross section of the soot cover 1 is formed into a circular shape.
  • the fume hood 1 is formed in a rectangular parallelepiped shape or a quadrangular prism shape
  • the cross section of the fume hood 1 is formed in a rectangular shape.
  • the cross section of the soot cover 1 can also be formed into other irregular shapes.
  • the jet outlet 23 has an extension length that is the same as the extension length of the flange structure 2 in the circumferential direction of the soot chamber 11.
  • the fume hood 1 is formed in a rectangular parallelepiped shape, and the burring structure 2 is formed on the bottom wall of one of the side walls of the fume hood 1, and the length of the jet outlet 23 is equal to the extended length of the burring structure 2.
  • the flange structure 2 is formed in a closed loop structure, that is, the flange structure 2 is formed over the entire circumference of the bottom wall of the fume hood 1, and the jet outlet 23 is also formed into a closed annular shape.
  • the burring structure 2 is formed into a closed annular structure
  • the jet outlet 23 is formed in a circular ring shape.
  • the cross section of the soot cover 1 is formed into a rectangular shape
  • the cuff structure 2 is formed into a closed square ring structure
  • the jet outlet 23 is formed into a closed square ring shape.
  • the hood 100 of the present embodiment includes a fume hood 1, a flange structure 2, and a fan 4.
  • the oil hood 1 is provided with a fume chamber 11 , and the upper end and the lower end of the fume chamber 11 are respectively provided with a soot outlet 112 and a soot inlet 111, and the soot outlet 112 is connected to the outdoor environment through the exhaust pipe 6.
  • the soot inlet 111 of the soot chamber 11 is located directly above the cooktop, that is, the range hood 100 is a top suction range hood 100.
  • the fume hood 1 is formed in a flared shape, the cross section of the fume hood 1 is formed into a circular shape, and the burring structure 2 is formed over the entire circumference of the bottom wall of the fume hood 1
  • a gas chamber 21 communicating with the oil fume chamber 11 is provided in the flange structure 2, and the gas chamber 21 has a gas inlet 22 and a jet outlet 23.
  • the gas inlet 22 is located on the top wall of the flange structure 2, and the jet outlet 23 is located on the inner side wall of the flange structure 2.
  • the jet outlet 23 is disposed adjacent to the soot inlet 111, and in the flow direction of the gas, the jet outlet 23 extends obliquely upward and the flow cross-sectional area of the jet outlet 23 gradually decreases.
  • the length of the jet outlet 23 is the same as the length of the flange structure 2. At this time, the jet outlet 23 is formed into a closed annular shape.
  • the radial extension direction of the cuff structure 2 is substantially perpendicular to the direction of the central axis of the fume hood 1.
  • the fan 4 can discharge air into the gas chamber 21, and the outlet end of the fan 4 is connected to the gas inlet 22 through the intake pipe 41, and the fan is located in the outdoor environment.
  • the fan 4 and the fume hood 1 are arranged separately, which can avoid the fan 4 and the oil
  • the direct contact of the smoke avoids contamination of the blower 4 and the impeller of the blower 4 by soot, and also helps to reduce the volume of the fume hood 1 while the fan 4 and the fume hood 1 are disposed separately, when the user uses the fume hood 1 It is beneficial to reduce noise and improve the comfort of the user when using the range hood 100.
  • the hood 100 also includes an air filter 5 that is located at the intake end of the blower 4.
  • the air filter 5 can filter dust, foreign matter, and the like to prevent dust, foreign matter, and the like from entering the fan 4.
  • the jet end of the jet outlet 23 has a width dimension H and H satisfies: 1 mm ⁇ H ⁇ 50 mm.
  • the longitudinal section of the jet outlet 23 is formed into a generally arcuate shape.
  • a plurality of shaped members 3 are provided at the jet outlet 23, and both ends of the shaped member 3 are respectively in contact with the inner peripheral wall of the jet outlet 23, that is, both ends of the shaped member 3 and the width direction of the jet outlet 23, respectively.
  • a plurality of shaped members 3 are spaced apart from each other in the extending direction of the jet outlet 23. Specifically, since the size of the outlet end of the jet outlet 23 is small, by providing the shaped member 3 at the jet outlet 23, it is possible to ensure that the actual size at the jet outlet 23 is the design size and the deformation of the jet outlet 23 is prevented.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)

Abstract

一种油烟机(100)，包括：油烟罩(1)、翻边结构(２)和风机(4)。油烟罩(1)内设有油烟腔(11)，油烟腔(11)的两端分别设有油烟出口(112)和油烟进口(111)；翻边结构(2)设在油烟罩(1)的底壁上，翻边结构(2)内设有与油烟腔(11)连通的气体腔体(21)，气体腔体(21)具有气体进口(22)和射流出口(23)，射流出口(23)邻近油烟进口(111)设置，在气体的流动方向上，射流出口(23)朝向靠近油烟出口(112)的方向倾斜延伸且射流出口(23)的流通截面积逐渐减小。

Description

油烟机 技术领域
本发明涉及电器技术领域，尤其是涉及一种油烟机。
背景技术
相关技术中的油烟机无法有效地利用吸油烟区域，吸油烟效果差。
发明内容
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本发明提出一种油烟机，吸油烟效果好。
根据本发明实施例的油烟机，包括：油烟罩，所述油烟罩内设有油烟腔，所述油烟腔的两端分别设有油烟出口和油烟进口；翻边结构，所述翻边结构设在所述油烟罩的底壁上，所述翻边结构内设有与所述油烟腔连通的气体腔体，所述气体腔体具有气体进口和射流出口，所述射流出口邻近所述油烟进口设置，在气体的流动方向上，所述射流出口朝向靠近所述油烟出口的方向倾斜延伸且所述射流出口的流通截面积逐渐减小；用于将空气排入所述气体腔体的风机。
根据本发明实施例的油烟机，通过将翻边结构设在油烟罩的底壁上，并在翻边结构内设置与油烟腔连通的气体腔体，在气体的流动方向上，使得射流出口朝向靠近油烟出口的方向倾斜延伸且使得射流出口的流通截面积逐渐减小，从而有利于控制油烟的流向、低压区域的范围和优化低压区域的压力，使得油烟流向油烟腔内并进一步从油烟出口排出到室外环境中，继而有利于优化油烟机的抽吸效果。
根据本发明的一些实施例，所述射流出口的射流端的宽度尺寸为H，H满足：1mm≤H≤50mm。
根据本发明的一些实施例，所述射流出口的纵截面形成为大体弧形形状、翼形形状或梯形形状。
根据本发明的一些实施例，所述射流出口处设有定形件，所述定形件的两端分别与所述射流出口的内周壁接触。
根据本发明的一些实施例，油烟机还包括空气过滤网，所述空气过滤网位于所述风机的进气端。
根据本发明的一些实施例，所述风机的出风端通过进气管与所述气体进口相连。
根据本发明的一些实施例，在所述油烟腔的周向方向上，所述射流出口的延伸长度与所述翻边结构的延伸长度相同。
具体地，所述翻边结构形成为闭环结构。
根据本发明的一些实施例，所述油烟罩的横截面形成为圆形形状或矩形形状。
根据本发明的一些实施例，所述油烟机为侧吸式油烟机。
附图说明
图1是根据本发明一些实施例的油烟机的立体示意图；
图2是根据本发明一些实施例的油烟机的部分结构示意图；
图3是根据本发明一些实施例的油烟机的射流出口的示意图；
图4是根据本发明另一些实施例的油烟机的射流出口的示意图。
附图标记：
油烟机100；
油烟罩1；油烟腔11；油烟进口111；油烟出口112；
翻边结构2；气体腔体21；气体进口22；射流出口23；
定形件3；
风机4；进气管41；
空气过滤网5；排烟管6；柯恩达表面7。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
下面参考图1-图4描述根据本发明实施例的油烟机100，油烟机100可用于抽吸油烟。例如，油烟机100可装设在灶台的上方，当用户炒菜做饭时，可以打开油烟机100以便于油烟机100抽吸炒菜做饭时产生的油烟。
如图1-图2所示，根据本发明实施例的油烟机100可以包括：油烟罩1、翻边结构2和风机4。
油烟罩1内设有油烟腔11，油烟腔11的两端分别设有油烟出口112和油烟进口111例如油烟腔11的上端和下端分别设有油烟出口112和油烟进口111，油烟出口112连接至室外环境。例如，当用户安装油烟机100时，可使得油烟罩1位于灶台的正上方， 油烟出口112通过排烟管6连接至室外环境。由此，当用户炒菜做饭时，油烟可通过油烟进口111进入到油烟腔11内，随后从油烟出口112排出到室外环境中。
具体地，油烟腔11的油烟进口111可位于灶台的正上方例如油烟机100为顶吸式油烟机100；当然，油烟腔11的油烟进口111还可位于灶台的侧方例如油烟机100为侧吸式油烟机100，可以理解的是，当油烟机100为侧吸式油烟机100时，油烟在从油烟进口111到油烟出口112的流动过程中，油烟的流动方向会发生转折。
本领域技术人员可以理解的是，在从油烟进口111到油烟出口112的方向上，油烟腔11的横截面积逐渐减小，从而当油烟在油烟腔11内流通时，可在一定程度上保证油烟的流通速度，以便于油烟经过油烟出口112排出到室外环境中。
优选地，油烟腔11的形状与油烟罩1的形状大体一致，在从油烟进口111到油烟出口112的方向上，油烟腔11的横截面积逐渐减小时，油烟罩1的横截面积也逐渐减小，由此，有利于减小油烟罩1的体积，从而减小油烟机100的体积。例如，如图1所示，油烟罩1形成为喇叭形形状，油烟腔11的也形成为喇叭形形状。
翻边结构2设在油烟罩1的底壁上，翻边结构2内设有与油烟腔11连通的气体腔体21，气体腔体21具有气体进口22和射流出口23。例如，气体进口22位于翻边结构2的顶壁或底壁上，射流出口23位于翻边结构2的侧壁上。射流出口23邻近油烟进口111设置，在气体的流动方向上，射流出口23朝向靠近油烟出口112的方向倾斜延伸且射流出口23的流通截面积逐渐减小。例如，当油烟机100为顶吸式油烟机100时，如图1-图4所示，在气体的流动方向上，射流出口23倾斜向上延伸且射流出口23的流通截面积逐渐减小。
由此，当气体腔体21内的气体经过射流出口23排出时，由于射流出口23朝向靠近油烟出口112的方向倾斜延伸，在射流出口23附近的内表面(油烟腔11的邻近射流出口23的内表面)形成了柯恩达表面7，根据柯恩达原理，空气从射流出口23排出后会产生柯恩达效应，从而改变空气的流动方向，空气沿着柯恩达表面7流动，在油烟腔11的邻近射流出口23的位置处产生了低压区，油烟被抽吸到低压区并与从射流出口23喷出的空气一起经过油烟腔11，从油烟出口112排出到室外环境中。在空气流经射流出口23的过程中，由于在空气的流动方向上，射流出口23的流通截面积逐渐减小，这有利于增大空气的流动速度，从而有利于进一步控制低压区域的范围和优化低压区域的压力，进而优化油烟机100对油烟的抽吸效果。
风机4可将空气排入气体腔体21内。例如，风机4的出风端与气体进口22相连，或在另一些实施例中，风机4的进风端与射流出口23连通。由此，通过风机4将空气排入气体腔体21内，可便于油烟机100持续抽吸油烟。
综上所述，当用户使用油烟机100时，风机4启动并将空气排入气体腔体21内，气体腔体21内的空气在通过射流出口23时，在油烟腔11的邻近射流出口23的内表面形成了柯恩达表面7，从而在油烟腔11的邻近射流出口23的位置处产生了低压区，用户炒菜时产生的油烟经过油烟进口被抽吸到低压区，低压区的油烟与从射流出口23喷 出的空气一起经过油烟腔11，从油烟出口112排出到室外环境中。在空气经过射流出口23的过程中，由于在空气的流动方向上，射流出口23的流通截面积逐渐减小，这有利于增大空气的流动速度，从而有利于进一步控制低压区域的范围和优化低压区域的压力，进而优化油烟机100对油烟的抽吸效果。
根据本发明实施例的油烟机100，通过将翻边结构2设在油烟罩1的底壁上，并在翻边结构2内设置与油烟腔11连通的气体腔体21，在气体的流动方向上，使得射流出口23朝向靠近油烟出口112的方向倾斜延伸且使得射流出口23的流通截面积逐渐减小，从而有利于控制油烟的流向、低压区域的范围和优化低压区域的压力，使得油烟流向油烟腔11内并进一步从油烟出口112排出到室外环境中，继而有利于优化油烟机100的抽吸效果。
具体而言，风机4与气体腔体21的气体进口22相连以使风机4将空气排入气体腔体21。进一步地，风机4的出风端通过进气管41与气体进口22相连，由此，风机4与油烟罩1分体设置，这可避免风机4与油烟的直接接触，避免了风机4以及风机4的叶轮等被油烟污染，从而有利于维持风机的洁净度，而且还有利于减小油烟罩1的体积，同时风机4与油烟罩1的分体设置，还可以使得风机4远离油烟罩1设置例如将风机4设在室外或将风机4设在远离油烟罩1的位置处，从而当用户使用油烟机100时，有利于降低用户耳边的噪音，提高用户使用油烟机100时的舒适度。
在本发明的一些实施例中，油烟机100还包括空气过滤网5，空气过滤网5位于风机4的进气端。由此，当风机4工作时，空气过滤网5可过滤灰尘或异物等，以避免灰尘或异物等进入到风机4内。
根据本发明的一些实施例，如图3所示，射流出口23的射流端的宽度尺寸为H，H满足：1mm≤H≤50mm。例如，如图3-图4所示，射流出口23的内顶壁和内底壁之间的最小距离即为射流出口23的射流端的宽度尺寸。由此，结构简单。
可选地，射流出口23的纵截面形成为大体弧形形状、翼形形状或梯形形状。具体而言，当射流出口23的纵截面形成为大体弧形形状时，射流出口23的内顶壁和射流出口23的内底壁的纵截面均形成为弧形形状。当射流出口23的纵截面形成为梯形形状时，射流出口23的内顶壁和内底壁的纵截面分别为直线段。当然，可以理解的是，在另一些实施例中，射流出口23的纵截面还可以形成为其它形状，例如，射流出口23的内顶壁和内底壁的纵截面分别形成为弧形形状和直线段，只要能够使得在气体的流动方向上，射流出口23朝向靠近油烟出口112的方向倾斜延伸且射流出口23的流通截面积逐渐减小，同时能够在油烟腔11的邻近射流出口23的内表面形成柯恩达表面7即可。
在本发明的一些实施例中，如图4所示，射流出口23处设有定形件3，定形件3的两端分别与射流出口23的内周壁接触。具体而言，由于射流出口23的尺寸较小，通过在射流出口23处设置定形件3，可以保证射流出口23处的实际尺寸即为设计尺寸，避免射流出口23变形。
具体地，定形件3与射流出口23为一体成型件。例如定形件3与射流出口23的顶 壁一体成型，或者定形件3与射流出口23的底壁一体成型。优选地，定形件3连接在射流出口23的内顶壁和内底壁之间，且与射流出口23的顶壁和底壁一体成型。
具体地，定形件3为多个，在油烟腔11的周向方向上，多个定形件3在射流出口23的延伸方向上彼此间隔设置，从而在保证射流出口23的尺寸的前提下，还便于空气从射流出口23喷出。
优选地，多个定形件3在射流出口23的延伸方向上均匀间隔开设置。
在本发明的一些实施例中，油烟罩1的横截面形成为圆形形状或矩形形状。例如，当油烟罩1形成为圆台形形状或喇叭形形状时，油烟罩1的横截面形成为圆形形状。或者，当油烟罩1形成为长方体状或四棱台状时，油烟罩1的横截面形成为矩形形状。当然，在另一些实施例中，油烟罩1的横截面还可以形成为其它不规则形状。
在本发明的一些实施例中，在油烟腔11的周向方向上，射流出口23的延伸长度与翻边结构2的延伸长度相同。例如，油烟罩1形成为长方体状，翻边结构2形成在油烟罩1的其中一个侧壁的底壁上，且射流出口23的延伸长度与翻边结构2的延伸长度相等。
优选地，翻边结构2形成为闭环结构，也就是说，翻边结构2形成在油烟罩1的底壁的整个周向上，此时射流出口23也形成为闭合的环形形状。例如，当油烟罩1的横截面形成为圆形形状时，翻边结构2形成为闭合的圆环结构，射流出口23形成为圆环形形状。或者，在另一些实施例中，当油烟罩1的横截面形成为矩形形状时，翻边结构2形成为闭合的方环形结构，射流出口23形成为闭合的方环形形状。
下面参考图1-图4对本发明一个具体实施例的油烟机100的结构进行详细说明。
如图1-图2所示，本实施例的油烟机100包括：油烟罩1、翻边结构2和风机4。
油烟罩1内设有油烟腔11，油烟腔11的上端和下端分别设有油烟出口112和油烟进口111，油烟出口112通过排烟管6连接至室外环境。
具体地，油烟腔11的油烟进口111位于灶台的正上方即油烟机100为顶吸式油烟机100。
油烟罩1形成为喇叭形形状，油烟罩1的横截面形成为圆形形状，翻边结构2形成在油烟罩1的底壁的整个周向上
翻边结构2内设有与油烟腔11连通的气体腔体21，气体腔体21具有气体进口22和射流出口23。气体进口22位于翻边结构2的顶壁上，射流出口23位于翻边结构2的内侧壁上。射流出口23邻近油烟进口111设置，在气体的流动方向上，射流出口23倾斜向上延伸且射流出口23的流通截面积逐渐减小。
在油烟腔11的周向方向上，射流出口23的延伸长度与翻边结构2的延伸长度相同。此时射流出口23形成为闭合的环形形状。
翻边结构2的径向延伸方向与油烟罩1的中心轴线的方向大体垂直设置。
风机4可将空气排入气体腔体21内，风机4的出风端通过进气管41与气体进口22相连，风机位于室外环境中。由此，风机4与油烟罩1分体设置，这可避免风机4与油 烟的直接接触，避免了风机4以及风机4的叶轮等被油烟污染，而且还有利于减小油烟罩1的体积，同时风机4与油烟罩1的分体设置，当用户使用油烟罩1时，有利于降低噪音，提高用户使用油烟机100时的舒适度。
油烟机100还包括空气过滤网5，空气过滤网5位于风机4的进气端。由此，当风机4工作时，空气过滤网5可过滤灰尘或异物等，以避免灰尘或异物等进入到风机4内。
如图3所示，射流出口23的射流端的宽度尺寸为H，H满足：1mm≤H≤50mm。
可选地，射流出口23的纵截面形成为大体弧形形状。
如图4所示，射流出口23处设有多个定形件3，定形件3的两端分别与射流出口23的内周壁接触即定形件3的两端分别与射流出口23的宽度方向上的两端接触，在油烟腔11的周向方向上，多个定形件3在射流出口23的延伸方向上彼此间隔设置。具体而言，由于射流出口23的出气端的尺寸较小，通过在射流出口23处设置定形件3，可以保证射流出口23处的实际尺寸即为设计尺寸，避免射流出口23变形。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或彼此可通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (10)

  1. 一种油烟机，其特征在于，包括：
    油烟罩，所述油烟罩内设有油烟腔，所述油烟腔的两端分别设有油烟出口和油烟进口；
    翻边结构，所述翻边结构设在所述油烟罩的底壁上，所述翻边结构内设有与所述油烟腔连通的气体腔体，所述气体腔体具有气体进口和射流出口，所述射流出口邻近所述油烟进口设置，在气体的流动方向上，所述射流出口朝向靠近所述油烟出口的方向倾斜延伸且所述射流出口的流通截面积逐渐减小；
    用于将空气排入所述气体腔体的风机。
  2. 根据权利要求1所述的油烟机，其特征在于，所述射流出口的射流端的宽度尺寸为H，H满足：1mm≤H≤50mm。
  3. 根据权利要求1-2中任一项所述的油烟机，其特征在于，所述射流出口的纵截面形成为大体弧形形状、翼形形状或梯形形状。
  4. 根据权利要求1-3中任一项所述的油烟机，其特征在于，所述射流出口处设有定形件，所述定形件的两端分别与所述射流出口的内周壁接触。
  5. 根据权利要求1-4中任一项所述的油烟机，其特征在于，还包括空气过滤网，所述空气过滤网位于所述风机的进气端。
  6. 根据权利要求1-5中任一项所述的油烟机，其特征在于，所述风机的出风端通过进气管与所述气体进口相连。
  7. 根据权利要求1-6中任一项所述的油烟机，其特征在于，在所述油烟腔的周向方向上，所述射流出口的延伸长度与所述翻边结构的延伸长度相同。
  8. 根据权利要求7所述的油烟机，其特征在于，所述翻边结构形成为闭环结构。
  9. 根据权利要求1-8中任一项所述的油烟机，其特征在于，所述油烟罩的横截面形成为圆形形状或矩形形状。
  10. 根据权利要求1所述的油烟机，其特征在于，所述油烟机为侧吸式油烟机。
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CN108167896A (zh) * 2018-03-05 2018-06-15 广东美的厨房电器制造有限公司 用于油烟机的风罩组件和油烟机
CN110292250A (zh) * 2019-03-07 2019-10-01 成都马踏飞燕科技有限公司 一种无烟火锅桌

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