US20150059731A1 - Hood system having built-in rotor - Google Patents

Hood system having built-in rotor Download PDF

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Publication number
US20150059731A1
US20150059731A1 US14/390,476 US201314390476A US2015059731A1 US 20150059731 A1 US20150059731 A1 US 20150059731A1 US 201314390476 A US201314390476 A US 201314390476A US 2015059731 A1 US2015059731 A1 US 2015059731A1
Authority
US
United States
Prior art keywords
rotor
contaminated gas
exhaust fan
housing
hood system
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US14/390,476
Other languages
English (en)
Inventor
Dong Sun Rho
Won Bae Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Triad Inc
Original Assignee
Triad Inc
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 Triad Inc filed Critical Triad Inc
Assigned to TRIAD INCORPORATED reassignment TRIAD INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEE, WON BAE, RHO, DONG SUN
Publication of US20150059731A1 publication Critical patent/US20150059731A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • F24C15/2042—Devices for removing cooking fumes structurally associated with a cooking range e.g. downdraft
    • 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
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • 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
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
    • 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
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F2007/001—Ventilation with exhausting air ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/065—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit fan combined with single duct; mounting arrangements of a fan in a duct

Definitions

  • the following description relates to a hood system with a built-in rotor, which rapidly draws in contaminated gas generated while cooking and removes the gas to the outside.
  • a range hood system is generally a device that is installed to prevent contamination of indoor air by timely releasing air pollutants, such as heat and odors caused while cooking various foods, smoke caused by combustion, exhaust gas, waste gas, steam, and the like.
  • air pollutants such as heat and odors caused while cooking various foods, smoke caused by combustion, exhaust gas, waste gas, steam, and the like.
  • Such range hood is being widely used as users' awareness about health is increasing.
  • a conventional range hood system includes only a cross-flow fan in a range hood housing that simply absorbs air, such that the system may not rapidly remove air to the outside, failing to eliminate oil containing steam caused while cooking foods, and gases mixed with exhaust gas from combustion materials.
  • a limited installation height of the range hood causes some of contaminated gases to diffuse before being suctioned by a fan, thereby doing harm to the health of users, and creating unpleasant living environment, which makes some users reluctant to use the system while cooking.
  • An object of the present disclosure is to provide a hood system with a built-in rotor, in which the rotor installed in the hood system may rapidly absorb contaminated gas generated while cooking and discharge the contaminated gas to the outside.
  • a hood system with a built-in rotor that prevents indoor air contamination by timely discharging contaminated gas generated by a pollution generating device
  • the system including: a housing that is disposed at an upper end of a pollution generating device, and that includes an inlet at a lower side through which contaminated gas is drawn in; an exhaust fan that is installed inside the housing, and rotates by a rotational drive device to forcibly discharge contaminated gas; a rotor that rotates with the exhaust fan to prevent the contaminated gas from being spread; and a discharge portion that is installed on an upper surface of the housing, and that discharges the contaminated gas suctioned by the exhaust fan.
  • the hood system with a built-in rotor has an extended axis of a rotational drive device, and a rotor is installed in the extended axis, such that the hood system may rapidly absorb contaminated gas generated by a pollution generating device, and may produce a curtain effect to prevent contaminated gas to diffuse to the outside.
  • contaminated gas flowing into the rotor may be forcibly discharged through the holes, enabling a more efficient curtain effect.
  • a rotor may be additionally installed to a conventional range hood system, there is no need to change the whole system, and installation costs may be reduced.
  • FIG. 1 is a view illustrating an example of a hood system with a built-in rotor according to an exemplary embodiment.
  • FIG. 2 is a view illustrating an exhaust fan extracted from FIG. 1 .
  • FIG. 3 is a view illustrating a rotor extracted from FIG. 1 .
  • FIG. 4 is a perspective view of FIG. 3 .
  • FIGS. 5 to 7 are views illustrating another example of a second blade in FIG. 4 .
  • FIG. 8 is a view illustrating pressure distribution in FIG. 1 in a case where there is no rotor.
  • FIG. 9 is a view illustrating pressure distribution in FIG. 1 that is changed by rotation of a rotor.
  • FIG. 10 is a view illustrating an exhaust velocity of contaminated gas discharged by a hood system in FIG. 8 in a space between an exhaust fan and a pollution generating device.
  • FIG. 11 is a view illustrating an exhaust velocity of contaminated gas discharged by a hood system in FIG. 9 in a space between an exhaust fan and a device of contamination sources.
  • FIG. 12 is a view illustrating another example of holes in FIG. 4 .
  • FIG. 13 is a view illustrating another example of a first and a second blades in FIG. 4 .
  • FIG. 1 is a view illustrating an example of a hood system with a built-in rotor according to an exemplary embodiment.
  • the hood system 100 with a built-in rotor is a device that timely releases contaminated gas generated by a pollution generating device 10 to the outside to prevent contamination of indoor air.
  • the hood system 100 with a built-in rotor includes a housing 110 , an exhaust fan 120 , a rotor 130 , and a discharge portion 140 .
  • the housing 110 is disposed on an upper side of the pollution generating device 10 , and has an inlet 111 , through which contaminated gas generated by the pollution generating device 10 flows in, is formed at a lower side of the housing 110 .
  • the housing 110 may be made of a stainless steel material, which is a special steel with lower carbon and excellent corrosion resistance compared to other metals, and has good mechanical properties with high electrical resistance, low heat conductivity, and the same strength as aluminum, although a thickness of stainless steel is only a third of aluminum. Further, for its hardness, the stainless steel has good processability, and soldering may be performed, thereby enabling a rapid process.
  • a stainless steel material which is a special steel with lower carbon and excellent corrosion resistance compared to other metals, and has good mechanical properties with high electrical resistance, low heat conductivity, and the same strength as aluminum, although a thickness of stainless steel is only a third of aluminum. Further, for its hardness, the stainless steel has good processability, and soldering may be performed, thereby enabling a rapid process.
  • Materials of the housing 110 may vary depending on structures and purposes of usage of the hood system 100 with a built-in rotor.
  • the exhaust fan 120 is installed in the housing 110 , and is connected to a rotational drive device 121 . Accordingly, if the rotational drive device 121 rotates, the exhaust fan 120 also rotates with the rotational drive device 121 to forcibly remove contaminated gas.
  • the rotational drive device 121 may be a motor.
  • the rotor 130 is installed on an identical axis of the exhaust fan 120 , and rotates with the exhaust fan 120 by the rotational drive device 121 to absorb contaminated gas, thereby preventing contaminated gas to spread to the inside.
  • the rotor 103 may be installed in an axis extended from the rotational drive device 121 .
  • the rotor 130 may be installed in addition to a conventional range hood system, such that the whole range hood system may not be changed, reducing installation costs.
  • the discharge portion 140 is installed on an upper surface of the housing 110 , and guides contaminated gas to the outside. For example, once contaminated gas generated by the pollution generating device 10 flows in the inlet 111 by the rotor 130 , the exhaust fan 120 discharges the flowing contaminated gas through the discharge portion 140 to the outside.
  • the hood system 100 with a built-in rotor has an extended axis of the rotational drive device 121 , and the rotor 130 is installed on the extended axis, such that contaminated gas generated by the pollution generating device 100 may be absorbed rapidly.
  • the rotor 130 may be additionally installed to a conventional range hood system, such that the whole system is not needed to be changed, reducing installation costs.
  • the housing 110 may be formed in a cone shape with a narrower top and a wider bottom, so that exhaust efficiency may be improved by using wind blowing in a circular shape when the rotor 130 rotates. If the inlet 111 of the housing 110 is formed in a rectangular shape, wind generated when the rotor 130 rotates collides against square edges of the housing, thereby causing flow hindrance, such as a vortex flow, which hinders movement of contaminated gas by the rotor 130 .
  • the housing 110 in a cone shape with a narrower top and a wider bottom, the flow of the contaminated gas by the rotor 130 may be readily moved, such that exhaust efficiency may be improved.
  • FIG. 2 is a view illustrating an exhaust fan extracted from FIG. 1 .
  • the exhaust fan 120 may be a sirocco fan.
  • the sirocco fan is a centrifugal fan that allows air to circulate by rotation of multiple forward blades, and may be used in wide applications from the home to industrial environments for purposes of air purification or ventilation, as it causes little noise.
  • FIG. 3 is a view illustrating a rotor extracted from FIG. 1 .
  • FIG. 4 is a perspective view of FIG. 3 .
  • the rotor 130 includes an axial core portion 131 , a first blade 132 , a body portion 133 , a second blade 134 , and holes 135 .
  • the axial core portion 131 is a portion that is extended from the rotational drive device 121 , and is connected to the exhaust fan 130 by the same axis.
  • the first blade 132 is connected to the axial core portion 131 to suction contaminated gas generated by the pollution generating device 10 .
  • the first blade 132 rotates to push contaminated gas toward the exhaust fan 120 , contaminated gas at the bottom is introduced to an empty space, such that the contaminated gas generated by the pollution generating device 10 is suctioned into the inlet 111 of the housing 110 .
  • the first blade 132 may be of any form, as long as the first blade 132 may function to force contaminated gas at the bottom to the top.
  • the first blade 132 may be a twisted right triangle in a truncated cone shape connected to the axial core portion 131 , or may be of a propeller shape attached to a support that connects the axial core portion 131 and the body portion 133 . Further, the first blade 132 may be of a blade shape attached to an inner side of the body portion 133 . That is, the shape of the first blade 132 may vary depending on structures and purposes of usage of the hood system 100 with a built-in rotor.
  • the body portion 133 may be connected to an upper and lower support of the axial core portion 131 , and is formed to surround the first blade 132 .
  • the second blade 134 may be attached to an outer surface of the body portion 133 . Accordingly, as the body portion 133 rotates, contaminated gas discharged toward an upper portion of the exhaust fan 120 is prevented from diffusing to the outside by centrifugal force.
  • the body portion 133 may be of a cylindrical shape with an upper portion and a lower portion opened. Through the opened upper portion and lower portion, contaminated gas flows in, and a collecting range of contaminated gas may be narrowed or widened by changing the size of the opening.
  • the second blade 134 is formed on an outer surface of the body portion 133 , and generates wind at the bottom by rotation.
  • the generated wind collides with an inclined surface in the housing 110 to be collected in an inner side, thereby forming a flow fence to generate vortex and produce a curtain effect.
  • the second blade 134 may be a right-angled triangle in a cone shape, but depending on structures or purposes of usage of the hood system 100 with a built-in rotor, the second blade 134 may be a shape with angles, or may be a rectangle, a circular arc, or the like, as illustrated in FIGS. 5 to 7 .
  • a plurality of holes 135 which are spaced apart, may be formed in the body portion 133 of the rotor 130 . As the holes 135 are formed in the body portion 133 of the rotor 130 , contaminated gas flowing into the rotor 130 may be forcibly discharged to the outside, thereby enabling a more efficient curtain effect produced by rotation of the second blade 134 .
  • FIG. 8 is a view illustrating pressure distribution in FIG. 1 in a case where there is no rotor.
  • FIG. 9 is a view illustrating pressure distribution in FIG. 1 that is changed by rotation of a rotor.
  • FIG. 10 is a view illustrating an exhaust velocity of contaminated gas discharged by a hood system in FIG. 8 in a space between an exhaust fan and a pollution generating device.
  • FIG. 11 is a view illustrating an exhaust velocity of contaminated gas discharged by a hood system in FIG. 9 in a space between an exhaust fan and a pollution generating device. Exhaust efficiency in a case where there is a rotor and in a case where there is no rotation boy will be described with reference to FIGS. 8 to 11 .
  • a flow generated by rotation of the second blade 134 attached to an outer surface of the body portion 133 forms a curtain flow that collides with the housing 110 and goes downward.
  • the curtain flow helps pollutants at the bottom to go up to the inlet 111 , thereby enabling most contaminants to be discharged through the discharge portion 140 .
  • contaminated gas at the bottom may be more readily lead to the discharge portion 140 .
  • FIG. 10 is a view illustrating an exhaust velocity of contaminated gas discharged by a hood system in FIG. 8 in a space between an exhaust fan and a pollution generating device.
  • FIG. 10 Upon comparison of FIG. 10 and FIG. 11 , if the exhaust fan 120 is operated in a hood system with no rotor 130 , almost no exhaust velocity for contaminated gas in a lower region is seen. That is, contaminated gas in a lower region may not be collected by only the movement of the exhaust fan 120 . Further, an exhaust velocity in a middle region is also weak, and an exhaust velocity only in an upper region may be measured as a value.
  • an exhaust velocity in a middle region may be twice or more an exhaust velocity of a hood system with no rotor 130 , with an excellent exhaust velocity in an upper region.
  • FIG. 12 is a view illustrating another example of holes in FIG. 4 .
  • the holes 235 may be formed in a quadrangle shape, and may be positioned at a lower end of the body portion 133 .
  • the holes 235 are not limited to the illustrated example, and its shapes and positions may vary depending on structures and usage purposes of the hood system 100 with a built-in rotor.
  • FIG. 13 is a view illustrating another example of a first and a second blade in FIG. 4 .
  • the first and second blades 232 and 234 of the rotor 130 may be formed in a trapezoidal cone shape. Further, the first blades 232 may be formed inside the body portion 133 to be space apart from each other. The first blades 232 and the second blades 234 are positioned not to face each other, such that contaminated gas may be suctioned more efficiently.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Ventilation (AREA)
US14/390,476 2012-04-03 2013-04-03 Hood system having built-in rotor Abandoned US20150059731A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
KR20120034624 2012-04-03
KR10-2012-0034624 2012-04-03
KR1020130033695A KR101335662B1 (ko) 2012-04-03 2013-03-28 회전체 내장형 후드 시스템
KR10-2013-0033695 2013-03-28
PCT/KR2013/002779 WO2013151336A1 (fr) 2012-04-03 2013-04-03 Système de hotte présentant un rotor intégré

Publications (1)

Publication Number Publication Date
US20150059731A1 true US20150059731A1 (en) 2015-03-05

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ID=49633639

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/390,476 Abandoned US20150059731A1 (en) 2012-04-03 2013-04-03 Hood system having built-in rotor

Country Status (7)

Country Link
US (1) US20150059731A1 (fr)
EP (1) EP2835591A4 (fr)
JP (1) JP2015512504A (fr)
KR (1) KR101335662B1 (fr)
CN (1) CN104302981A (fr)
RU (1) RU2014144306A (fr)
WO (1) WO2013151336A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN109530134A (zh) * 2018-11-20 2019-03-29 马美香 一种煤矿喷涂堵漏风用高分子喷涂材料喷涂防护装置
US11280501B2 (en) * 2016-12-06 2022-03-22 Lg Electronics Inc. Ventilation apparatus
US11415331B2 (en) * 2016-12-02 2022-08-16 Lg Electronics Inc. Cookware and exhaust device

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CN108155430B (zh) 2013-01-14 2021-10-29 詹思姆公司 电气设备的基于热电的热管理
US11014132B2 (en) 2015-07-16 2021-05-25 Illinois Tool Works Inc. Extractor with end-mounted positive pressure system
US11530826B2 (en) * 2015-07-16 2022-12-20 Illinois Tool Works Inc. Extractor with segmented positive pressure airflow system
KR102613956B1 (ko) * 2016-11-14 2023-12-15 엘지전자 주식회사 쿡탑 일체형 주방후드
CN106642261B (zh) * 2016-12-29 2018-11-06 宁波方太厨具有限公司 一种吸油烟机性能调节装置及应用有该装置的吸油烟机
KR102104317B1 (ko) * 2017-05-02 2020-04-24 엘지전자 주식회사 국소 배기 장치 및 이에 구비된 와류형성장치
KR102183065B1 (ko) * 2019-04-11 2020-11-25 김성규 토네이도 방식의 스마트 레인지 후드 장치 및 그 구동방법
KR102244891B1 (ko) * 2019-05-02 2021-04-27 주식회사 더원리빙 와류공기 흡입 기능을 갖는 공기청정기
KR102314021B1 (ko) * 2021-06-01 2021-10-18 원성재 주방용 유해물질 정화장치
KR102314022B1 (ko) * 2021-06-01 2021-10-18 원성재 주방용 유해물질 정화장치
KR102591116B1 (ko) 2023-04-12 2023-10-17 김병도 후드 형상에 따른 스커트를 구비한 조리흄 캐처 및 그 작동 방법

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11415331B2 (en) * 2016-12-02 2022-08-16 Lg Electronics Inc. Cookware and exhaust device
US11280501B2 (en) * 2016-12-06 2022-03-22 Lg Electronics Inc. Ventilation apparatus
CN109530134A (zh) * 2018-11-20 2019-03-29 马美香 一种煤矿喷涂堵漏风用高分子喷涂材料喷涂防护装置

Also Published As

Publication number Publication date
EP2835591A4 (fr) 2015-12-02
EP2835591A1 (fr) 2015-02-11
KR101335662B1 (ko) 2013-12-03
KR20130112758A (ko) 2013-10-14
WO2013151336A1 (fr) 2013-10-10
CN104302981A (zh) 2015-01-21
JP2015512504A (ja) 2015-04-27
RU2014144306A (ru) 2016-05-27

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