WO2022240229A1 - Dispositif d'épuisement local de hotte d'auvent - Google Patents

Dispositif d'épuisement local de hotte d'auvent Download PDF

Info

Publication number
WO2022240229A1
WO2022240229A1 PCT/KR2022/006872 KR2022006872W WO2022240229A1 WO 2022240229 A1 WO2022240229 A1 WO 2022240229A1 KR 2022006872 W KR2022006872 W KR 2022006872W WO 2022240229 A1 WO2022240229 A1 WO 2022240229A1
Authority
WO
WIPO (PCT)
Prior art keywords
canopy hood
horizontal portion
circumference
canopy
hood
Prior art date
Application number
PCT/KR2022/006872
Other languages
English (en)
Korean (ko)
Inventor
오희범
Original Assignee
주식회사 토네이도시스템즈
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 토네이도시스템즈 filed Critical 주식회사 토네이도시스템즈
Publication of WO2022240229A1 publication Critical patent/WO2022240229A1/fr

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates

Definitions

  • the present invention relates to a canopy hood local exhaust ventilation system installed in an exhaust duct.
  • an exhaust device is used to discharge various contaminants generated during cooking in a kitchen, or dust, gas, oil mist, welding fumes, etc. generated at a work site to the outdoors.
  • These local exhaust systems include hoods, ducts, fans, air cleaners, stacks, etc. After the contaminants are collected, they are sent along the duct to the air purifier for treatment.
  • the hood serves to locally collect contaminants generated in the work process where overall ventilation is difficult, and becomes an inlet part of the local exhaust system.
  • a canopy hood is suitable for work with hot ascending air currents.
  • the canopy hood is mainly installed at the bottom of the exhaust duct in a circular or square cross-section shape, and is installed in a form that covers the top of the generating part of harmful pollutants or the top of the work table. do.
  • a blowing fan is installed at the rear end of the exhaust duct.
  • the blower fan presumes that when the air is discharged through the exhaust duct by generating an air flow by the negative pressure created by driving the fan, the pollutants in the space will be carried in the air and discharged together.
  • the flow velocity in the region marked E is the slowest (the part around 0.100 [m/s] in the lower left spectrum), D (the part around 2.900 [m/s] in the lower left spectrum), and C (the part around 2.900 [m/s] in the lower left spectrum).
  • the flow velocity gradually increases towards the regions marked by 4.580 [m/s]), B (the part around 6.260 [m/s] in the lower left spectrum), and A (the part around 8.500 [m/s] in the lower left spectrum).
  • the area marked A indicates an area where the flow velocity is approximately 7 m/s to 8.5 ms/s
  • the area marked B indicates an area where the flow velocity is approximately 5.7 m/s to 6.9 ms/s
  • the area marked C indicates a region where the flow velocity is approximately 2.9 m/s to 5.6 ms/s
  • the area marked with D indicates an area in which the flow velocity is approximately 1.8 m/s to 2.8 ms/s
  • the area marked with E indicates an area in which the flow velocity is approximately 0.1 m/s to 1.7 ms/s.
  • a technical problem of the present invention is to provide a canopy hood local exhaust ventilation system in which a contaminant collection area is expanded and efficiency is improved compared to the prior art.
  • the present invention is a canopy hood having a horizontal portion coupled to the lower end of an exhaust duct and a through hole formed in the center of the horizontal portion to communicate with the exhaust duct; a vortex fan installed below the through hole of the canopy hood to be adjacent to the lower surface of the horizontal portion; and a drive motor installed inside the exhaust duct and coupled to the vortex fan to rotate the vortex fan, wherein a distance from a circumference of the through hole of the canopy hood to a circumference of the horizontal portion is an inner diameter of the vortex fan.
  • It provides a canopy hood local exhaust system, characterized in that the horizontal portion is extended and formed so that it is more than 1 times and less than 10 times of.
  • the canopy hood may further include an inclined portion extending obliquely at a predetermined angle downward from the circumference of the horizontal portion.
  • the canopy hood may further include a vertical portion extending in a direction perpendicular to the horizontal portion from a lower end of the inclined portion.
  • the canopy hood may further include a flange portion extending outward from a lower end of the inclined portion in a direction parallel to the horizontal portion.
  • the canopy hood further includes a vertical portion extending in a vertical direction downward from the circumference of the horizontal portion, and the distance from the circumference of the through hole to the circumference of the horizontal portion is 4 to 4 of the inner diameter of the vortex fan. It can be between 5 times.
  • the motor bracket coupled to the canopy hood to support the drive motor, wherein the motor bracket includes a body portion coupled to one surface of the drive motor, and is bent along the circumference of the body portion. and may include four bent bars whose ends are coupled to the outside of the rim of the through hole.
  • the vortex fan is installed adjacent to the lower surface of the horizontal part of the canopy hood and the horizontal part is extended to be more than 1 times the inner diameter of the vortex fan, compared to the conventional canopy hood local exhaust ventilation device.
  • the material collection efficiency is significantly improved.
  • FIG. 1 is an illustration showing the result of simulating the flow velocity distribution of a conventional canopy hood (exhaust air volume 353m3 / h).
  • FIG. 2 is a schematic diagram of simulation when a vortex fan is installed in an exhaust duct without a canopy hood (exhaust air volume 353 m 3 / h).
  • FIG. 3 and 4 are perspective views of a canopy hood local exhaust ventilation system according to an embodiment of the present invention.
  • Figure 5 is an exploded perspective view of Figure 4.
  • Figure 6 is a cross-sectional view of Figure 4.
  • FIG. 7 is a diagram illustrating a simulation of a local exhaust ventilation device under a canopy hood according to an embodiment of the present invention (exhaust air volume 353 m 3 / h).
  • FIG. 8 is a simulation diagram of a canopy hood local exhaust ventilation system according to another embodiment of the present invention (exhaust air volume 353m3 / h).
  • FIG. 9 is a simulation diagram of a canopy hood local exhaust ventilation system according to another embodiment of the present invention (exhaust air volume 353m3 / h).
  • 3 to 6 are views for explaining the configuration of a canopy hood local exhaust ventilation system according to an embodiment of the present invention, and the canopy hood local exhaust ventilation system will be described with reference thereto.
  • the canopy hood local exhaust system 100 includes an exhaust duct 200, a canopy hood 300 installed at the bottom of the exhaust duct 200, a vortex fan 400 installed inside the canopy hood 300, , and a drive motor 500 that drives the vortex fan 400.
  • the canopy hood 300 is coupled to the lower end of the exhaust duct 200, and specifically, the horizontal portion 310 of the canopy hood 300 is coupled to the lower end of the exhaust duct 200 by welding or bolting. As shown in the figure, the horizontal portion 310 of the canopy hood 300 may have a rectangular shape, but may have other shapes such as a circular shape.
  • a through hole 301 is formed at the top of the canopy hood 300, that is, at the center of the horizontal portion 310, to communicate with the exhaust duct 200.
  • the shape of the canopy hood 300 serves to guide the airflow pushed by the vortex fan 400, and the airflow pushed by the vortex fan 400 returns according to the shape of the canopy hood 300. Since the point at which the vortex is formed is different, the shape of the canopy hood 300 has a great effect on pollutant collection performance. The present inventors have noticed that there may be a difference in collection performance depending on the shape of the canopy hood 300, and this has been supported through various experiments (eg, FIGS. 1 and 7 to 9).
  • the conventional canopy hood 10 has an upper surface extending downwardly from the circumference of the exhaust duct 200 .
  • This is a structure for minimizing the decrease in intake flow rate by minimizing the air flow volume as much as possible and maximizing the pollutant collection cross section by maximizing the hood inlet cross section.
  • the collection performance was remarkably low so that only a part of the canopy hood was sucked between the positions about 140 mm downward from the lower end of the canopy hood. This is because it relied only on the suction force of the fan built in the exhaust duct 200 .
  • the canopy hood 300 communicates with the horizontal portion 310 coupled to the lower end of the exhaust duct 200 and the exhaust duct 200 at the center of the horizontal portion 310. It has a through hole 301 formed to do so, and the distance from the circumference of the through hole 301 of the canopy hood 300 to the circumference of the horizontal portion 310 is 1 to 10 times the inner diameter of the vortex fan 400.
  • the horizontal portion 310 is formed to extend.
  • the canopy hood 300 may have an inclined portion 320 extending obliquely downward at a predetermined angle from the circumference of the horizontal portion 310 . Furthermore, the canopy hood 300 may have a vertical portion 330 extending in a direction perpendicular to the horizontal portion 310 from the lower end of the inclined portion 320 .
  • the horizontal portion 310 of the canopy hood 300 serves to guide the air flow pushed outward of the through hole 301 by the vortex fan 400, and eventually the air flow passes through the rim of the canopy hood 300. It is guided to the inclined portion 320 to be configured. That is, by forming the horizontal portion 310 of the canopy hood 300 to be one or more times the inner diameter of the vortex fan 400, a space is provided in which the airflow pushed by the vortex fan 400 can move in the horizontal direction.
  • the length of the horizontal portion 310 is preferably 1 to 10 times the inner diameter of the vortex fan 400 . If the length of the horizontal portion 310 is less than one time the inner diameter of the vortex pan 400, the effect of expanding the collecting area according to the formation of the horizontal portion 310 is insignificant, and the length of the horizontal portion 310 is less than that of the vortex pan 400. If it exceeds 10 times the inner diameter, there is a disadvantage in that the effect of forming vortexes by the vortex fan 400 is lowered.
  • the vortex fan 400 is installed inside the canopy hood 300 and is rotatably disposed below the through hole 301 .
  • the vortex fan 400 includes an annular rotating plate 410 having a through portion formed in the center, a plurality of fins 420 vertically formed on the rotating plate 410, and formed at the center of the through portion and driven. It may include a coupling portion 440 to which the drive shaft of the motor 500 is coupled, and a plurality of connection rods 450 radially extending from the coupling portion 440 to the inner circumferential surface of the rotating plate 410 .
  • the vortex fan 400 may further include a circular belt member 430 vertically formed along the inner circumferential surface of the rotating plate 410, and at this time, the connecting rod 450 is connected to the circular belt member from the coupling part 440 It may be formed extending radially up to (430).
  • the vortex pen 400 may be installed adjacent to the lower surface of the horizontal part 310 of the canopy hood 300, and thus the airflow pushed outward by the vortex pen 400 is directed to the lower surface of the horizontal part 310. It moves in the horizontal direction along and comes into contact with the upper end of the inclined portion 320.
  • a driving motor 500 is installed inside the exhaust duct 200 to drive the vortex fan 400 .
  • the driving motor 500 is installed above the through hole 301 of the canopy hood 300 by a motor bracket 600 having one side coupled to the canopy hood 300 and supporting the driving motor 500 .
  • the motor bracket 600 serves to support the drive motor 500 and at the same time absorbs and attenuates some vibration and noise generated when the drive motor 500 operates.
  • the motor bracket 600 has a body portion 610 coupled to one surface of the drive motor 500, and one end is formed bent along the circumference of the body portion 610, and is formed outside the edge of the through hole 301 of the canopy hood 300. It may be made including four bending bars 620 to which the other end is coupled.
  • a hollow 611 is formed in the center of the body portion 610 so that the driving shaft of the driving motor 500 passes therethrough.
  • the bending bar 620 includes an extension part 621 extending horizontally from the body part 610, a bent part 622 bent vertically downward at the end of the extension part 621, and a bent part ( 622) is bent outward perpendicularly with respect to the bent portion 622 at the end thereof and includes a support portion 623 coupled to the edge of the through hole 301 of the canopy hood 300 by welding or bolting.
  • the canopy hood local exhaust system forms the upper surface of the canopy hood 300 as a horizontal portion 310 and is adjacent to the lower surface.
  • the biggest technical feature is that the vortex fan 400 is installed so that it is disposed, and by this configuration, the airflow pushed outward by the vortex fan 400 moves along the horizontal part 310 of the canopy hood 300 and then , Since a vortex area is created on the lower side of the canopy hood 300 while moving along the inclined portion 320, the effect of expanding the collection area is obtained.
  • FIG. 2 is a case where only the vortex fan 400 is installed under the exhaust duct 200 without the canopy hood 300, and the upward airflow occurs only in an area about 30° left and right based on the direct downward direction of the vortex fan 400. (within the range of about 60° as a whole), it was confirmed that the airflow spreads in all directions in the area outside the angular range, which rather spreads the pollutants into the surrounding space.
  • FIGS. 7 to 9 are simulation diagrams of local exhaust ventilation devices under a canopy hood according to various embodiments under the same exhaust air volume (353 m3/h) condition.
  • the flow velocity in the area marked E in FIGS. 7 to 9 is the slowest (periphery of 0.100 [m/s] in the lower left spectrum) and D (2.900 [m/s] in the lower left spectrum). part around), C (part around 4.580 [m/s] in the lower left spectrum), B (part around 6.260 [m/s] in the lower left spectrum), A (part around 8.500 [m/s] in the lower left spectrum) ), the flow rate gradually increases toward the region indicated by Specifically, the area marked A indicates an area where the flow velocity is approximately 7 m/s to 8.5 ms/s, the area marked B indicates an area where the flow velocity is approximately 5.7 m/s to 6.9 ms/s, and the area marked C indicates a region where the flow velocity is approximately 2.9 m/s to 5.6 ms/s.
  • the area marked with D indicates an area in which the flow velocity is approximately 1.8 m/s to 2.8 ms/s
  • the area marked with E indicates an area in which the flow velocity is approximately 0.1 m/s to 1.7 ms/s.
  • the canopy hood 300 includes a horizontal portion 310, an inclined portion 320, and a vertical portion 330.
  • the distance from the circumference of the through hole 301 of the canopy hood 300 to the circumference of the horizontal portion 310 may be one or more times the inner diameter of the vortex fan 400, and is approximately the same as the inner diameter of the vortex fan 400.
  • the conventional canopy hood 10 forms a pollutant collection area with a flow rate of 0.1m/s from the lower end of the hood to a distance of 140mm downward, and only a part of it is sucked.
  • a contaminant collection area with a flow rate of 0.1 m/s is formed from the bottom of the canopy hood 300 to a distance of 415 mm downward, so that the conventional canopy hood 10 ), it can be seen that the contaminant collection area is significantly expanded in the left and right directions and in the lower direction.
  • the canopy hood 300a includes a horizontal portion 310, an inclined portion 320, and a flange portion 340.
  • the canopy hood 300a may have a flange portion 340 extending outward from the lower end of the inclined portion 320 in a direction parallel to the horizontal portion 310, and the flange portion 340 extends in parallel.
  • the collection area is expanded due to the hood structure.
  • the distance from the circumference of the through hole 301 of the canopy hood 300 to the circumference of the horizontal portion 310 may be one or more times the inner diameter of the vortex fan 400, and is approximately the same as the inner diameter of the vortex fan 400.
  • a pollutant collection area with a flow rate of 0.1 m/s is formed from the lower end of the canopy hood 300a to a distance of 456 mm downward, and the collection area is larger than that of the canopy hood local exhaust system 100 of FIG. It can be seen that this is formed more widely.
  • the canopy hood 300b includes a horizontal portion 310 and a vertical portion 330, but does not include an inclined portion 320.
  • the canopy hood local exhaust device 300b includes a horizontal portion 310 extending in a horizontal direction around the through hole 301 and a vertical portion extending in a vertical direction downward from the circumference of the horizontal portion 310. (330).
  • the distance from the circumference of the through hole 301 of the canopy hood 300 to the circumference of the horizontal portion 310 is between 4 and 5 times the inner diameter of the vortex fan 400.
  • a contaminant collection area with a flow rate of 0.1 m/s is formed from the lower end of the canopy hood 300b to a distance of 390 mm downward. It is a lower value than the canopy hood local exhaust ventilation devices of FIGS. 7 and 8, but shows a much better collection efficiency than the conventional canopy hood of FIG. 1. In addition, there is an advantage in that the air flow pushed by the vortex fan 400 is prevented from going out of the hood, thereby preventing re-diffusion of contaminants.
  • the collection area of contaminants is expanded and the collection efficiency is remarkably improved.

Landscapes

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

Abstract

La présente invention concerne un dispositif d'épuisement local de hotte d'auvent comprenant : une hotte d'auvent comprenant une partie horizontale couplée à l'extrémité inférieure d'un conduit d'échappement et un trou traversant formé dans le centre de la partie horizontale pour être en communication avec le conduit d'échappement ; un ventilateur à vortex qui est installé sur le côté inférieur du trou traversant de la hotte d'auvent pour être adjacent à la surface inférieure de la partie horizontale ; et un moteur d'entraînement qui est installé dans le conduit d'échappement et qui est couplé au ventilateur à vortex de façon à faire tourner le ventilateur à vortex, la partie horizontale étant étendue de telle sorte qu'une distance de la circonférence du trou traversant de la hotte d'auvent à la circonférence de la partie horizontale est une à dix fois le diamètre interne du ventilateur à vortex.
PCT/KR2022/006872 2021-05-13 2022-05-13 Dispositif d'épuisement local de hotte d'auvent WO2022240229A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2021-0061783 2021-05-13
KR1020210061783A KR20220154359A (ko) 2021-05-13 2021-05-13 캐노피 후드 국소배기장치

Publications (1)

Publication Number Publication Date
WO2022240229A1 true WO2022240229A1 (fr) 2022-11-17

Family

ID=84029357

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2022/006872 WO2022240229A1 (fr) 2021-05-13 2022-05-13 Dispositif d'épuisement local de hotte d'auvent

Country Status (2)

Country Link
KR (1) KR20220154359A (fr)
WO (1) WO2022240229A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120086642A (ko) * 2011-01-26 2012-08-03 (주)지텍 국소 배기장치 및 이를 갖는 아일랜드식 주방시스템
CN104467261A (zh) * 2013-09-18 2015-03-25 广东美的厨房电器制造有限公司 电机组件和具有其的吸油烟机
KR101602794B1 (ko) * 2014-12-24 2016-03-14 최지원 안정적인 공기이동로를 구성하여 배기량을 증대시키는 배기장치
KR102059802B1 (ko) * 2019-05-24 2019-12-27 주식회사 토네이도시스템즈 보텍스팬을 구비한 레인지 후드
US20210025598A1 (en) * 2018-03-27 2021-01-28 Lg Electronics Inc. Local exhaust device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120086642A (ko) * 2011-01-26 2012-08-03 (주)지텍 국소 배기장치 및 이를 갖는 아일랜드식 주방시스템
CN104467261A (zh) * 2013-09-18 2015-03-25 广东美的厨房电器制造有限公司 电机组件和具有其的吸油烟机
KR101602794B1 (ko) * 2014-12-24 2016-03-14 최지원 안정적인 공기이동로를 구성하여 배기량을 증대시키는 배기장치
US20210025598A1 (en) * 2018-03-27 2021-01-28 Lg Electronics Inc. Local exhaust device
KR102059802B1 (ko) * 2019-05-24 2019-12-27 주식회사 토네이도시스템즈 보텍스팬을 구비한 레인지 후드

Also Published As

Publication number Publication date
KR20220154359A (ko) 2022-11-22

Similar Documents

Publication Publication Date Title
CN1789825B (zh) 抽油烟机
WO2013151336A1 (fr) Système de hotte présentant un rotor intégré
US7682231B2 (en) Exhaust fan assembly
CN2442168Y (zh) 天花板嵌装式空调装置
CN104456674B (zh) 一种吸油烟机
WO2022240229A1 (fr) Dispositif d'épuisement local de hotte d'auvent
CN101936563A (zh) 一种抽油烟机及风幕装置
CN207999862U (zh) 一种能够快速分离油污的吸油烟机
EP0609740A1 (fr) Hotte d'évacuation de fumée pour cuisine
CN109573792B (zh) 一种具有空调净化装置的电梯
JPH11244805A (ja) 循環気流式集塵装置
CN211952876U (zh) 一种厨房顶吸式抽油烟机除油装置
CN216790292U (zh) 一种吸油烟机的进风组件及应用有该面板组件的吸油烟机
CN214148232U (zh) 一种用于涂装车间的顶式通风装置
CN2235082Y (zh) 排油烟机
CN2465097Y (zh) 一种排油烟机
CN215610088U (zh) 一种具有病毒灭杀功能的新型过滤器
CN2180920Y (zh) 同轴轴流风罩式排油烟机
CN215523434U (zh) 一种吸油烟机
CN212108561U (zh) 具有风帘的天花烟罩
CN213193062U (zh) 一种废气处理的环保装置
CN215265806U (zh) 一种变压器用多方位除尘外壳
CN2336240Y (zh) 净化油烟机
CN214211665U (zh) 一种用于粉尘收集装置的进风机构
CN2177882Y (zh) 卷吸式抽油烟机

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22807876

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22807876

Country of ref document: EP

Kind code of ref document: A1