EP2835591A1 - Hood system having built-in rotor - Google Patents
Hood system having built-in rotor Download PDFInfo
- Publication number
- EP2835591A1 EP2835591A1 EP13772788.9A EP13772788A EP2835591A1 EP 2835591 A1 EP2835591 A1 EP 2835591A1 EP 13772788 A EP13772788 A EP 13772788A EP 2835591 A1 EP2835591 A1 EP 2835591A1
- Authority
- EP
- European Patent Office
- 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.)
- Withdrawn
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Classifications
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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
- 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.
- 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. For example, once 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)
Abstract
Description
- 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. Such range hood is being widely used as users' awareness about health is increasing.
- However, 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.
- Further, 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.
- In one general aspect, there is disclosed 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.
- According to the present disclosure, 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.
- Further, by forming a plurality of holes in a body portion of the rotor, contaminated gas flowing into the rotor may be forcibly discharged through the holes, enabling a more efficient curtain effect.
- In addition, as 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.
-
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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 fromFIG. 1 . -
FIG. 3 is a view illustrating a rotor extracted fromFIG. 1 . -
FIG. 4 is a perspective view ofFIG. 3 . -
FIGS. 5 to 7 are views illustrating another example of a second blade inFIG. 4 . -
FIG. 8 is a view illustrating pressure distribution inFIG. 1 in a case where there is no rotor. -
FIG. 9 is a view illustrating pressure distribution inFIG. 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 inFIG. 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 inFIG. 9 in a space between an exhaust fan and a device of contamination sources. -
FIG. 12 is a view illustrating another example of holes inFIG. 4 . -
FIG. 13 is a view illustrating another example of a first and a second blades inFIG. 4 . - The invention is described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.
-
FIG. 1 is a view illustrating an example of a hood system with a built-in rotor according to an exemplary embodiment. - As illustrated in
FIG. 1 , thehood system 100 with a built-in rotor is a device that timely releases contaminated gas generated by a pollution generatingdevice 10 to the outside to prevent contamination of indoor air. - The
hood system 100 with a built-in rotor includes ahousing 110, anexhaust fan 120, arotor 130, and adischarge portion 140. - The
housing 110 is disposed on an upper side of the pollution generatingdevice 10, and has aninlet 111, through which contaminated gas generated by the pollution generatingdevice 10 flows in, is formed at a lower side of thehousing 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. - Materials of the
housing 110 may vary depending on structures and purposes of usage of thehood system 100 with a built-in rotor. - The
exhaust fan 120 is installed in thehousing 110, and is connected to arotational drive device 121. Accordingly, if therotational drive device 121 rotates, theexhaust fan 120 also rotates with therotational drive device 121 to forcibly remove contaminated gas. Therotational drive device 121 may be a motor. - The
rotor 130 is installed on an identical axis of theexhaust fan 120, and rotates with theexhaust fan 120 by therotational 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 therotational drive device 121. Therotor 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 thehousing 110, and guides contaminated gas to the outside. For example, once contaminated gas generated by the pollution generatingdevice 10 flows in theinlet 111 by therotor 130, theexhaust fan 120 discharges the flowing contaminated gas through thedischarge portion 140 to the outside. - As described above, the
hood system 100 with a built-in rotor has an extended axis of therotational drive device 121, and therotor 130 is installed on the extended axis, such that contaminated gas generated by the pollution generatingdevice 100 may be absorbed rapidly. Further, therotor 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 therotor 130 rotates. If theinlet 111 of thehousing 110 is formed in a rectangular shape, wind generated when therotor 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 therotor 130. - Accordingly, by forming the
housing 110 in a cone shape with a narrower top and a wider bottom, the flow of the contaminated gas by therotor 130 may be readily moved, such that exhaust efficiency may be improved. -
FIG. 2 is a view illustrating an exhaust fan extracted fromFIG. 1 . - As illustrated in
FIG. 2 , theexhaust 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 fromFIG. 1 .FIG. 4 is a perspective view ofFIG. 3 . - As illustrated in
FIGS. 3 and4 , therotor 130 includes anaxial core portion 131, afirst blade 132, abody portion 133, asecond blade 134, andholes 135. - The
axial core portion 131 is a portion that is extended from therotational drive device 121, and is connected to theexhaust fan 130 by the same axis. - The
first blade 132 is connected to theaxial core portion 131 to suction contaminated gas generated by the pollution generatingdevice 10. For example, once thefirst blade 132 rotates to push contaminated gas toward theexhaust fan 120, contaminated gas at the bottom is introduced to an empty space, such that the contaminated gas generated by the pollution generatingdevice 10 is suctioned into theinlet 111 of thehousing 110. - The
first blade 132 may be of any form, as long as thefirst blade 132 may function to force contaminated gas at the bottom to the top. Thefirst blade 132 may be a twisted right triangle in a truncated cone shape connected to theaxial core portion 131, or may be of a propeller shape attached to a support that connects theaxial core portion 131 and thebody portion 133. Further, thefirst blade 132 may be of a blade shape attached to an inner side of thebody portion 133. That is, the shape of thefirst blade 132 may vary depending on structures and purposes of usage of thehood system 100 with a built-in rotor. - The
body portion 133 may be connected to an upper and lower support of theaxial core portion 131, and is formed to surround thefirst blade 132. - The
second blade 134 may be attached to an outer surface of thebody portion 133. Accordingly, as thebody portion 133 rotates, contaminated gas discharged toward an upper portion of theexhaust 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 thebody portion 133, and generates wind at the bottom by rotation. The generated wind collides with an inclined surface in thehousing 110 to be collected in an inner side, thereby forming a flow fence to generate vortex and produce a curtain effect. - In a conventional hood system, only the
exhaust fan 120 is installed in thehousing 110 to simply suction air, thereby preventing contaminated gas generated by thepollution generating device 10 from being spread to the outside. Such vortex and curtain effects keep contaminated gas inside a flow fence, preventing contaminated gas from being spread to the outside. - The
second blade 134 may be a right-angled triangle in a cone shape, but depending on structures or purposes of usage of thehood system 100 with a built-in rotor, thesecond blade 134 may be a shape with angles, or may be a rectangle, a circular arc, or the like, as illustrated inFIGS 5 to 7 . - A plurality of
holes 135, which are spaced apart, may be formed in thebody portion 133 of therotor 130. As theholes 135 are formed in thebody portion 133 of therotor 130, contaminated gas flowing into therotor 130 may be forcibly discharged to the outside, thereby enabling a more efficient curtain effect produced by rotation of thesecond blade 134. -
FIG. 8 is a view illustrating pressure distribution inFIG. 1 in a case where there is no rotor.FIG. 9 is a view illustrating pressure distribution inFIG. 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 inFIG. 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 inFIG. 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 toFIGS. 8 to 11 . - First, as illustrated in
FIG. 8 , in a hood system with no rotor, low pressure is formed at the bottom of theexhaust fan 120 by rotation of theexhaust fan 120, and high pressure is formed in thedischarge portion 140, such that contaminated gas generated by thepollution generating device 10 may be discharged. However, if the hood system is installed far from thepollution generating device 10, or if there is a large amount of contaminated gas, a weak suction force makes contaminated gas difficult to be discharged. - In order to solve the problem, by mounting the
rotor 130 in the hood system as illustrated inFIG. 9 , low pressure is formed at the bottom of thebody portion 133 by rotation of thefirst blade 132 of therotor 130, and a little high pressure is formed at theinlet 111, thereby facilitating exhaust action. Accordingly, rotation of thefirst blade 132 widens a suction range in a downward direction, forcing contaminated gas to theexhaust fan 120, thereby producing an effect that contaminated gas may be collected before being spread to the inside the home. - Further, a flow generated by rotation of the
second blade 134 attached to an outer surface of thebody portion 133 forms a curtain flow that collides with thehousing 110 and goes downward. The curtain flow helps pollutants at the bottom to go up to theinlet 111, thereby enabling most contaminants to be discharged through thedischarge portion 140. - By forming a lower support in a propeller shape that supports the
body portion 133, contaminated gas at the bottom may be more readily lead to thedischarge portion 140. -
FIG. 10 is a view illustrating an exhaust velocity of contaminated gas discharged by a hood system inFIG. 8 in a space between an exhaust fan and a pollution generating device. Upon comparison ofFIG. 10 andFIG. 11 , if theexhaust fan 120 is operated in a hood system with norotor 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 theexhaust 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. - As illustrated in
FIG. 11 , however, in a hood system with therotor 130, vortex, a curtain flow, and a suction flow generated by movement of therotor 130 maintain an exhaust velocity of contaminated gas at more than a certain level, and an exhaust velocity in a middle region may be twice or more an exhaust velocity of a hood system with norotor 130, with an excellent exhaust velocity in an upper region. -
FIG. 12 is a view illustrating another example of holes inFIG. 4 . - As illustrated in
FIG. 12 , theholes 235 may be formed in a quadrangle shape, and may be positioned at a lower end of thebody portion 133. Theholes 235 are not limited to the illustrated example, and its shapes and positions may vary depending on structures and usage purposes of thehood system 100 with a built-in rotor. -
FIG. 13 is a view illustrating another example of a first and a second blade inFIG. 4 . - As illustrated in
FIG. 13 , the first andsecond blades rotor 130 may be formed in a trapezoidal cone shape. Further, thefirst blades 232 may be formed inside thebody portion 133 to be space apart from each other. Thefirst blades 232 and thesecond blades 234 are positioned not to face each other, such that contaminated gas may be suctioned more efficiently. - A number of examples have been described above. Nevertheless, it should be understood that various modifications may be made. For example, suitable results may be achieved if the described techniques are performed in a different order and/or if components in a described system, architecture, device, or circuit are combined in a different manner and/or replaced or supplemented by other components or their equivalents. Accordingly, other implementations are within the scope of the following claims. Further, the above-described examples are for illustrative explanation of the present invention, and thus, the present invention is not limited thereto.
Claims (4)
- A hood system with a built-in rotor, the system comprising: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; anda discharge portion that is installed on an upper surface of the housing, and that discharges the contaminated gas suctioned by the exhaust fan.
- The system of claim 1, wherein the rotor comprises:an axial core portion that is connected to the exhaust fan by an identical axis;a first blade that is connected to the axial core portion, and that suctions the contaminated gas generated by the pollution generating device;a body portion that is connected to the axial core portion to surround the first blade, and that is formed in a cylindrical shape with an upper portion and a lower portion opened;a second blade that is formed on an outer surface of the body portion, and that generates vortex and a curtain flow by blowing wind at a lower end.
- The system of claim 2, wherein the body portion of the rotor has a plurality of holes that are spaced apart.
- The system of claim 1, wherein the housing is formed in a cone shape with a narrower top and a wider bottom.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20120034624 | 2012-04-03 | ||
KR1020130033695A KR101335662B1 (en) | 2012-04-03 | 2013-03-28 | Exhaust system with built-in rotation body |
PCT/KR2013/002779 WO2013151336A1 (en) | 2012-04-03 | 2013-04-03 | Hood system having built-in rotor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2835591A1 true EP2835591A1 (en) | 2015-02-11 |
EP2835591A4 EP2835591A4 (en) | 2015-12-02 |
Family
ID=49633639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13772788.9A Withdrawn EP2835591A4 (en) | 2012-04-03 | 2013-04-03 | Hood system having built-in rotor |
Country Status (7)
Country | Link |
---|---|
US (1) | US20150059731A1 (en) |
EP (1) | EP2835591A4 (en) |
JP (1) | JP2015512504A (en) |
KR (1) | KR101335662B1 (en) |
CN (1) | CN104302981A (en) |
RU (1) | RU2014144306A (en) |
WO (1) | WO2013151336A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6513577B2 (en) | 2013-01-14 | 2019-05-15 | ジェンサーム インコーポレイテッドGentherm Incorporated | Thermoelectric-based thermal management of electrical devices |
US11530826B2 (en) * | 2015-07-16 | 2022-12-20 | Illinois Tool Works Inc. | Extractor with segmented positive pressure airflow system |
US11014132B2 (en) | 2015-07-16 | 2021-05-25 | Illinois Tool Works Inc. | Extractor with end-mounted positive pressure system |
KR102613956B1 (en) * | 2016-11-14 | 2023-12-15 | 엘지전자 주식회사 | A Kitchen Hood Integrated Cooktop |
KR101936199B1 (en) * | 2016-12-02 | 2019-01-08 | 엘지전자 주식회사 | Cooking appliance and ventilating apparatus |
KR102111328B1 (en) * | 2016-12-06 | 2020-05-15 | 엘지전자 주식회사 | Ventilating apparatus |
CN106642261B (en) * | 2016-12-29 | 2018-11-06 | 宁波方太厨具有限公司 | A kind of range hood property regulation device and application have the range hood of the device |
KR102104317B1 (en) * | 2017-05-02 | 2020-04-24 | 엘지전자 주식회사 | Local ventilation equipment and swirler therein |
CN109530134A (en) * | 2018-11-20 | 2019-03-29 | 马美香 | A kind of coal mine spraying wind leaking stoppage macromolecule sprayed on material jet printing protecting device |
KR102183065B1 (en) * | 2019-04-11 | 2020-11-25 | 김성규 | Tornado-type smart range Hood Device and Drive Method of the Same |
KR102244891B1 (en) * | 2019-05-02 | 2021-04-27 | 주식회사 더원리빙 | Air purifier with swirling air suction function |
KR102314021B1 (en) * | 2021-06-01 | 2021-10-18 | 원성재 | Apparatus for removing fine dust and oil vapor generated during cooking |
KR102314022B1 (en) * | 2021-06-01 | 2021-10-18 | 원성재 | Apparatus for removing fine dust and oil vapor generated during cooking |
KR102591116B1 (en) | 2023-04-12 | 2023-10-17 | 김병도 | Cooking fume catcher having skirt according to hood shapes, and operating method for the same |
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JPS6048432A (en) * | 1983-08-24 | 1985-03-16 | Nippon Air Curtain Kk | Locally contaminated gas remover |
GB2210448B (en) * | 1987-09-30 | 1991-11-27 | Tiong Ee Ong | Cooker hood |
JPH05296511A (en) * | 1992-04-22 | 1993-11-09 | Kumagai Gumi Co Ltd | Ventilator device using tornado |
DE19626896C2 (en) * | 1996-07-04 | 2001-08-23 | Mayer Gmbh Geb | Fan |
JP3905963B2 (en) * | 1997-11-26 | 2007-04-18 | 富士工業株式会社 | Range food |
JP4023210B2 (en) * | 2002-05-13 | 2007-12-19 | 東京エレクトロン株式会社 | Processing system |
JP3746253B2 (en) * | 2002-07-18 | 2006-02-15 | 松下エコシステムズ株式会社 | Fan filter unit |
DE202005008867U1 (en) * | 2005-06-04 | 2006-07-20 | Huber Kunststoff & Technik Gmbh | Device for venting a cavity |
KR101236898B1 (en) * | 2005-09-13 | 2013-02-25 | 한라공조주식회사 | Shroud for axial flow fan for automobile |
EP1967796A1 (en) * | 2007-03-08 | 2008-09-10 | Itho B.V. | Cooking hood with air curtain |
JP5056094B2 (en) * | 2007-03-20 | 2012-10-24 | パナソニック株式会社 | Range food |
US8083479B2 (en) * | 2008-12-15 | 2011-12-27 | Enermax Technology Corporation | Heat dissipating fan structure of dual motor |
KR100955727B1 (en) * | 2009-02-24 | 2010-05-03 | (주)지텍 | Local ventilator device |
WO2011021760A1 (en) * | 2009-08-21 | 2011-02-24 | 유한회사 대동 | Range cooker hood employing a swirler |
KR20110020157A (en) * | 2009-08-21 | 2011-03-02 | 유한회사 대동 | A range hood using swirler |
-
2013
- 2013-03-28 KR KR1020130033695A patent/KR101335662B1/en active IP Right Grant
- 2013-04-03 US US14/390,476 patent/US20150059731A1/en not_active Abandoned
- 2013-04-03 WO PCT/KR2013/002779 patent/WO2013151336A1/en active Application Filing
- 2013-04-03 EP EP13772788.9A patent/EP2835591A4/en not_active Withdrawn
- 2013-04-03 JP JP2015504494A patent/JP2015512504A/en active Pending
- 2013-04-03 CN CN201380025981.9A patent/CN104302981A/en active Pending
- 2013-04-03 RU RU2014144306A patent/RU2014144306A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
US20150059731A1 (en) | 2015-03-05 |
KR101335662B1 (en) | 2013-12-03 |
WO2013151336A1 (en) | 2013-10-10 |
EP2835591A4 (en) | 2015-12-02 |
RU2014144306A (en) | 2016-05-27 |
CN104302981A (en) | 2015-01-21 |
JP2015512504A (en) | 2015-04-27 |
KR20130112758A (en) | 2013-10-14 |
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