WO2013099930A1 - レンジフード - Google Patents

レンジフード Download PDF

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Publication number
WO2013099930A1
WO2013099930A1 PCT/JP2012/083625 JP2012083625W WO2013099930A1 WO 2013099930 A1 WO2013099930 A1 WO 2013099930A1 JP 2012083625 W JP2012083625 W JP 2012083625W WO 2013099930 A1 WO2013099930 A1 WO 2013099930A1
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WO
WIPO (PCT)
Prior art keywords
filter
hole
range hood
oil
fan
Prior art date
Application number
PCT/JP2012/083625
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
崇義 藤原
Original Assignee
富士工業株式会社
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 富士工業株式会社 filed Critical 富士工業株式会社
Priority to SG11201403676TA priority Critical patent/SG11201403676TA/en
Publication of WO2013099930A1 publication Critical patent/WO2013099930A1/ja

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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
    • 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
    • F24C15/2035—Arrangement or mounting of filters

Definitions

  • the present invention relates to a range hood that collects oil from oil smoke generated by cooking, and more particularly to a range hood that exhibits remarkable oil collection efficiency.
  • a range hood installed in a kitchen or the like inhales steam or smoke generated by cooking under the range hood together with the air flow generated by the fan, and the oil smoke or the like together with the inhaled air to the outdoors. It is what is discharged. However, it is not environmentally preferable to discharge the oil contained in the oil smoke to the outside as it is, and the oil is attached to equipment such as fans and ducts that are usually present downstream of the range hood in the air flow path for cleaning, etc. A large amount of labor / cost is required for maintenance of the equipment, and the deterioration of the equipment is promoted. Therefore, conventionally, since the range hood captures and collects the oil contained in the oil smoke in a filter or the like, many devices have been made to increase the oil collection efficiency.
  • Patent Document 1 there is a technique disclosed in Patent Document 1 as a device for increasing the collection efficiency of the filter.
  • a plurality of rows are formed by vertically arranging slits on a thin metal plate of a predetermined shape at a pitch of 2 to 5 mm, and the entire tongue piece defined by the slits in each row is refracted and tilted in one direction.
  • a filter for a range hood in which a single filter is formed by providing a vent hole having a vertical width of 1 to 3 mm without leaving a plane portion between the slits, and the filter alone or a combination of a plurality of filters.
  • Such a filter has an oil collecting rate of about 50%, and although it has an oil collecting effect, it is still not sufficient. If the slits of the filter are made finer in order to improve the collection efficiency, the oil is collected at a large number of slits at a small pitch, so the filter is likely to be clogged. In addition, when such a filter is clogged, it is easier to clean than a filter using a lath net or a metal net. However, since many slits are opened at a small pitch, it is very difficult to wash and wash all the slit portions. Takes a lot of labor and time and is inferior in cleanability.
  • Patent Document 2 removes dirt adhering to the filter without using a large amount of washing water by providing a filter that collects oily smoke during cooking and a brush that moves while contacting the surface of the filter (dirt wiping means).
  • a range hood with a filter cleaning function is disclosed.
  • Such a range hood reduces the time and effort for the user to clean the filter, but requires a brush, an electric motor that drives the brush, a tank of washing water, a spray nozzle, etc., and the structure of the range hood itself becomes complicated on a large scale, Cost also increases. In the first place, this range hood does not present a technique for improving the oil collection efficiency of the filter.
  • Patent Document 3 There is a technique disclosed in Patent Document 3 as a device to prevent clogging of the filter and reduce the labor of cleaning, and to increase the oil recovery rate by the filter.
  • a rotatable filter having a blade and having a substantially disk shape is provided on the front side of a rotary blade for exhaust to remove oil in the exhaust gas, and exhaust gas flowing through the filter is exhausted.
  • a range hood is disclosed in which a passage portion for guiding oil in exhaust gas to an inner surface is provided from the filter to the exhaust rotary blade while being guided to the rotary blade for exhaust.
  • Such a range hood also does not significantly improve the collection efficiency of the filter beyond the technology in Patent Document 1, and does not require a large-scale complicated structure as in Patent Document 2, but while the range hood is in operation This is the same in that the oil component adhering to the filter is to be removed while the filter is not in operation (when the range hood is stopped).
  • the user's effort to clean the filter is somewhat reduced, a large amount of oil is scattered in the passage provided from the filter to the exhaust rotary blade, that is, in the downstream portion of the filter. It can not be said that the trouble of washing the downstream portion of the filter, which takes much trouble when cleaning the hood, is reduced.
  • an object of the present invention is a filter that greatly exceeds conventional oil collection efficiency and has a small pressure loss, and is not easily clogged. And providing a range hood that reduces the labor for cleaning / washing the downstream portion of the air flow path from the filter, and realizes them with a simple structure.
  • a fan that generates an air flow a filter that exists on the upstream side of the fan on the flow path of the air flow and has a hole through which the air flow passes, and An electric motor for rotating the filter and an oil collecting member surrounding the filter, and the fan generates the air flow and the electric motor rotates the filter, so that the oil contained in the air is generated.
  • a range hood for collecting the oil in the oil collecting member is provided.
  • the range hood which has high oil collection efficiency in a state with a small pressure loss can be provided.
  • the filter may have a disk shape, and the rotating shaft of the electric motor may be attached to the center of the disk of the filter. According to this, it has a simple structure and can provide a thin range hood.
  • both surfaces of the filter may be smooth surfaces. According to this, the ventilation resistance in the filter is further reduced, and further, the rotation resistance of the filter is also reduced. Therefore, it is sufficient that the motor for rotating the filter has a small torque. Moreover, since there is no protrusion such as a cut and raised on the filter, it is possible to provide a range hood with low noise for cutting air. Further, these make it easy to rotate the filter at high speed. Further, the filter hole is further less likely to be clogged with oil, and further, since there is no protrusion such as a cut and raised, the filter itself can be easily cleaned / cleaned.
  • the diameter of the hole in the circumferential direction is 0.75 mm or less and the rotational speed of the filter is 230 rpm or more, or the diameter of the hole in the circumferential direction is 1.00 mm or less and the filter
  • the rotation speed is 310 rpm or more, or the diameter of the hole in the circumferential direction is 1.50 mm or less and the rotation speed of the filter is 460 rpm or more, or the diameter of the hole in the circumferential direction is 2. 00 mm or less and the rotation speed of the filter is 620 rpm or more, or the diameter of the hole in the circumferential direction is 5.00 mm or less and the rotation speed of the filter is 1500 rpm or more. Good. According to this, the range hood which oil collection efficiency improves further can be provided.
  • the average value in the filter of the time required for one end and the other end of the diameter of the hole in the circumferential direction to pass through one point on a certain circumference is 3.2 ⁇ 10 ⁇ 4 seconds or less. This may be a feature. According to this, the range hood which oil collection efficiency improves further can be provided.
  • the pore diameter average passage time tx represented by the formula (1) described later may be 3.2 ⁇ 10 ⁇ 4 seconds or less. According to this, the range hood which oil collection efficiency improves further can be provided.
  • the shortest distance between the downstream end of the oil collecting member surrounding the filter and the downstream disk surface of the filter is the upstream end of the oil collecting member and the upstream side of the filter. It may be characterized by being at least the shortest distance from the disk surface. According to this, the ratio which can also collect the oil component which passed through the hole increases by capturing the oil component scattered toward the outer peripheral direction on the downstream side of the filter, and a range hood with higher oil collecting efficiency can be provided. .
  • a filter that greatly exceeds the conventional oil collecting efficiency and has a small pressure loss is provided with a filter that is not easily clogged, and is easy to clean / clean, particularly an air flow path.
  • achieve these with a simple structure can be provided.
  • Sectional drawing of the 1st Example of the range hood which concerns on this invention The perspective view seen from the lower part of the 1st Example of the range hood which concerns on this invention (The state which removed the baffle plate is shown).
  • the front view (A), side view (B), top view (C), bottom view (D), sectional drawing (E) which show the filter and its peripheral part in the 1st Example of the range hood which concerns on this invention.
  • It is a perspective view which shows the filter and its peripheral part in 1st Example of the range hood which concerns on this invention (A) is the perspective view seen from upper direction, (B) is the perspective view seen from the downward direction.
  • the expanded sectional view which shows the filter and its peripheral part in the 1st Example of the range hood which concerns on this invention (The position of a cross section is the same position as FIG.3 (E)).
  • the front view (A), the top view (B), bottom view (C), and perspective view (D) which show the electric motor which rotates the filter and filter in the 1st Example of the range hood which concerns on this invention.
  • the front view (A), the top view (B), bottom view (C), and perspective view (D) which show the oil content collection member in the 1st Example of the range hood which concerns on this invention.
  • Explanatory drawing which shows the modification of the shape of the hole of the filter in the 1st Example of the range hood which concerns on this invention.
  • the graph which shows the relationship between the hole diameter average passage time and the collection rate in the 1st Example of the range hood which concerns on this invention.
  • Sectional drawing of the modification of the 1st Example of the range hood which concerns on this invention Sectional drawing of the 2nd Example of the cooker hood which concerns on this invention. Sectional drawing of the 3rd Example of the cooker hood which concerns on this invention. Sectional drawing of 4th Example of the cooker hood which concerns on this invention.
  • FIG. 1 shows a range hood 1 in a first embodiment according to the present invention.
  • the range hood 1 has a thin hood portion 80 having a concave inner panel 81 on the inner surface for collecting steam, oily smoke, etc. generated by cooking performed below.
  • the hood portion 80 is coupled to the blower box 82 connected to the exhaust duct D in the vicinity of the hood opening 2 located at substantially the center thereof.
  • the blower box 82 includes a fan casing 61 inside, and the fan casing 61 includes a fan 60 that is a sirocco fan and generates an air flow.
  • the suction port 62 of the fan 60 is disposed so as to be positioned in the hood opening 2 of the hood unit 80. Accordingly, when the fan 60 is operated, the hood opening 2 becomes negative pressure, and the air below the inner panel 81 is sucked through the hood opening 2 and discharged to the outside through the exhaust duct D. That is, the hood opening 2 is located on the upstream side of the fan 60 on the flow path of the air flow generated by the fan 60.
  • the hood opening 2 has a mounting plate 50 attached so as not to form a gap that can be an air flow path with the inner surface panel 81, a disc-shaped filter 10 having a hole through which air flows, and a filter
  • the rotating shaft is connected to the center of the disk 10, the motor 20 rotates the filter 10, the motor mounting tool 40 for mounting the motor 20 to the mounting plate 50, and the mounting plate 50 is attached to the outer peripheral edge of the filter 10.
  • the surrounding oil collecting member 30 exists. Therefore, the range hood 1 is on the flow path of the air flow generated by the fan 60, and exists on the upstream side of the flow from the fan 60, and has a hole through which the air flow passes from the bottom to the top in the drawing.
  • the filter 10 is provided to be rotatable.
  • the air below the inner panel 81 includes steam, oily smoke, etc. generated by cooking.
  • the fan 60 When the fan 60 is operated, it exists in the hood opening 2, that is, on the flow path of the air flow generated by the fan 60. Thus, the air is sucked into the hole of the filter 10 located on the upstream side of the fan 60 and passes through the hole.
  • the filter 10 is rotatably provided by the electric motor 20.
  • the range hood 1 When the range hood 1 is operated, the fan 60 generates an air flow and the electric motor 20 rotates the filter 10.
  • the range hood 1 collects oil contained in the air in the oil collecting member 30 by rotating the filter 10. How to collect will be described later.
  • Such a range hood 1 uses a conventional slot filter, HEPA filter, etc., and has a small pressure loss as compared to improving the oil collecting efficiency by making slits and eyes fine or overlapping to form a multilayer. It can have high oil collection efficiency in the state.
  • a conventional slot filter, HEPA filter, etc. if the slits are made finer or overlapped into multiple layers to improve oil collection efficiency, the filter vent forms a complex flow path. Therefore, the ventilation resistance tends to be high, but in the case of such a range hood 1, the oil collecting efficiency is increased by the rotation of the filter, and thus it is not necessary to form such a complicated flow path.
  • the filter is less likely to clog due to oil adhering to the filter, thereby reducing the cleaning effort of the filter itself and preventing an increase in pressure loss as it is used. Since the oil hardly adheres to the downstream portion, it is possible to provide a range hood that greatly reduces the trouble of cleaning / washing the downstream portion from the filter.
  • the type of fan 60 is not particularly limited, and may be another fan such as an axial fan that generates an air flow. Preferably, it is a sirocco fan with a high static pressure used for the present Example.
  • a rectifying plate 70 that is detachable from the hood unit 80 and that has a gap between the hood unit 80 and increases the suction force is provided below the hood unit 80.
  • the range hood 1 in the present embodiment includes the current plate 70, the presence of the current plate 70 is not particularly limited and may or may not be present.
  • the inner surface panel 81 that is the inner surface of the hood portion 80 and the inner surface panel 81 are attached so that there is no gap between them.
  • the attached mounting plate 50, the disk-shaped filter 10, and the oil collecting member 30 attached to the mounting plate 50 and provided to surround the outer peripheral edge of the filter 10 can be directly recognized by the user.
  • the filter 10 is formed from a thin plate having a disk shape, but is not limited thereto, and for example, the filter may be cylindrical.
  • the cylindrical filter has a hole through which the cylinder rotates by connecting the rotating shaft of the electric motor to the central axis of the cylinder and allows the air flow to pass through the side surface of the cylinder.
  • the air flow is configured to pass from the outside to the inside of the side surface of the cylinder.
  • the oil collecting member is provided so as to surround the side surface of the cylinder.
  • the tube may be placed horizontally or vertically. When the cylinder is placed horizontally, the oil collecting member includes an opening that opens downward to suck air and an opening that flows to let the air flow to the fan side.
  • the filter When the cylinder is installed vertically, the filter does not open the bottom of the cylinder in order to suck air flow from the side of the cylinder, and the oil collecting member is provided so as to surround the entire filter side. Since it has a simple structure and can provide a thin range hood, a filter having a disk shape as in this embodiment and formed from a thin plate is preferable.
  • the filter 10 is formed from a single thin plate, but may be formed from a plurality of thin plates, or a plurality of filters may be arranged on the flow path of the air flow. . According to such a configuration, even when the rotational speed of the filter is not sufficient, the oil collection rate becomes higher.
  • the portions other than the holes on the surfaces on both sides of the filter 10 are smooth surfaces that are flat and smooth with no protrusions or irregularities, but are not limited to this, and are not limited to this. There may be protrusions such as cut and raised together with slits (holes). If the filter has a smooth surface as in this embodiment, the ventilation resistance of the air flow in the filter is further reduced, and further, the rotational resistance of the filter is also reduced, so the electric motor for rotating the filter has a small torque. Things are enough. Moreover, since there is no protrusion such as a cut and raised on the filter, it is possible to provide a range hood with low noise for cutting air. Further, these make it easy to rotate the filter at high speed.
  • the movement of the filter is a rotational movement around the center of the disk-shaped filter, but is not limited to this, and may be an eccentric rotational movement or a linear reciprocating movement. It may be.
  • a rotational movement with the center of the disk-shaped filter as the center of rotation as in this embodiment is preferred.
  • the filter unit 3 to 6 show the filter 10 of the range hood 1 and its peripheral portion (hereinafter referred to as a filter unit).
  • the filter unit 3 is connected to a mounting plate 50 attached to the hood opening 2, a disk-shaped filter 10 having a hole through which air flows, and a rotating shaft connected to the center of the disk of the filter 10 to rotate the filter 10.
  • the mounting plate 50 is a substantially square flat plate provided with a circular mounting plate opening 51 at the center.
  • the periphery of the flat plate is curved upward with a curvature, but is not limited thereto, and may be configured to be attached to the hood opening 2 of the inner surface panel 81.
  • the attachment plate 50 and the hood opening 2 are attached without a gap or the like, and the air flow does not pass through this attachment portion. Therefore, the mounting plate opening 51 is the only part that allows the air flow generated by the fan 60 to pass therethrough, and the mounting plate opening 51 is a flow path for the air flow generated by the fan 60.
  • the motor attachment 40 is provided on the downstream side of the air flow of the attachment plate 50 so as to straddle the attachment plate opening 51.
  • the electric motor attachment 40 has a hole 41 through which the rotating shaft 21 of the electric motor 20 is passed substantially in the center, and has a marginal portion so that it can be easily attached to the attachment plate 50.
  • the electric motor attachment 40 is attached to the attachment plate 50 so that the hole 41 is the center of the attachment plate opening 51 in a plan view.
  • the electric motor 20 is fixed to the electric motor fixture 40 by passing the rotation shaft through the hole 41 of the electric motor fixture 40 from the upper side to the lower side in the drawing (from the downstream side to the upstream side of the air flow).
  • the rotating shaft 21 of the electric motor 20 is the center of a circular mounting plate opening 51 in plan view.
  • the filter 10 is detachably attached to the tip portion of the rotating shaft 21 of the electric motor 20 so that the surface of the filter 10 is perpendicular to the rotating shaft 21.
  • the outer shape of the filter 10 is circular, and the filter 10 is attached to the rotating shaft 21 of the electric motor 20 located at the center of the circular attachment plate opening 51 at the center of the filter 10.
  • the outer shape of the part 51 is a concentric circle.
  • the diameter of the filter 10 is larger than the diameter of the mounting plate opening 51 because the mounting plate opening 51 has the extending portion 52.
  • the extending portion 52 extends to the end on the downstream side of the oil collecting member 30 on the inner side of the inner wall of the oil collecting member 30, that is, on the rotating shaft side of the electric motor 20. This extending portion 52 is preferable because it increases the rate at which oil that has passed through the holes can be collected, and can provide a range hood with high oil collection efficiency.
  • the position of the filter 10 in the front view is below the lower surface of the mounting plate 50, that is, on the upstream side of the air flow. Therefore, the oil collecting member 30 is attached to the attachment plate 50 so as to surround the outer peripheral edge of the filter 10.
  • the distance between the outer peripheral edge of the filter 10 and the inner wall of the oil collecting member 30 needs to be larger than 0 so that they do not contact each other, but is preferably as small as possible so that the oil does not leak. In this embodiment, it is about 2.5 mm.
  • the oil collecting member 30 is provided with an oil reservoir 31 at the lower end.
  • the oil reservoir 31 is where the oil component bounced off against the upstream surface of the filter 10 hits the inner wall of the oil component collecting member 30 and the oil component is stored.
  • the height of the range hood 1 is made up of the height of the hood portion 80 and the height of the blower box 82.
  • the height of the blower box 82 is almost defined by the height of the fan 60, and the height of the hood portion 80 is From the sum of the height from the upper end of the electric motor 20 to the lower end of the oil collecting member 30, that is, the height of the filter unit 3, and the depth (height) of the concave portion of the inner surface panel 81 for capturing air containing oil and the like. It is prescribed. In order to capture air containing oil or the like, a certain degree of depth (height) of the recess is required. Therefore, reducing the height of the filter unit 3 reduces the overall height of the range hood 1. In order to provide a thin range hood, it becomes important. In this embodiment, the filter unit 3 is thin and preferable because the filter 10 is formed from a thin plate having a disk shape.
  • FIG. 7 and FIG. 8 illustrate the action of collecting the oil component accompanying the air flow in the range hood 1.
  • FIG. 7 shows the action of the air flow in the entire range hood 1.
  • the heated air A rises toward the range hood 1 together with steam, oily smoke, etc. generated by cooking performed below the range hood 1.
  • the fan 60 starts to rotate, the fan 60 generates an air flow from the bottom to the top in the drawing.
  • the air rising around the rectifying plate 70 is sucked from between the rectifying plate 70 and the inner surface panel 81, then passes through the hole 11 of the filter 10 and is sucked into the suction port 62 of the fan 60 in the fan casing 61.
  • the air is discharged from the blower box 82 to the exhaust duct D.
  • the number of rotations per unit time of the filter 10 may be at least 230 rpm (Rotation Permane Minute) or more, although it depends on the opening state of the filter hole. Details such as the relationship with the opening state of the holes will be described later.
  • the movement of the spiral air occurs on both surfaces of the filter 10, that is, both the lower surface and the upper surface of the filter 10, in other words, both the upstream surface and the downstream surface of the air flow A of the filter 10.
  • the air flow A generated by the fan 60 flows from the bottom to the top through the hole 11 of the filter 10 in the drawing, the movement of the spiral air on the downstream side of the filter 10.
  • a spiral flow toward the outer peripheral edge of the filter 10 is generated and sucked from the suction port 62 by the fan 60.
  • the movement of the vortex air is pressed against the surface of the filter 10, and a high-density air layer with a vortex flow toward the outer peripheral edge of the filter 10 is formed.
  • FIG. 8 shows the effect of air flow in the filter unit 3.
  • the oil component OP1 generated by cooking or the like flows along with the air flow A and reaches the vicinity of the upstream surface of the filter 10.
  • the oil component OP2 that has reached the vicinity of the upstream side is partly (oil component with a small particle diameter) due to a spiral flow toward the outer periphery of the dense air layer, and the other part (oil component with a large particle diameter) is By colliding with the upstream surface of the filter 10 (the portion without the hole 11), the filter 10 is blown off in the direction of the outer peripheral edge.
  • the oil collecting member 30 provided so as to surround the outer peripheral edge of the disk-shaped filter 10 is collected as the oil component OP3 and is collected in the oil reservoir 31 as the oil OL.
  • the oil that has become very fine particles passes through the holes of the filter 10 together with the air flow A, but some of the oil is downstream from the filter 10 of the extension 52 and the oil collecting member 30. It can be recovered by colliding with the inner wall. Part of the oil that could not be finally recovered adheres to the fan 60, the exhaust duct D, etc. located downstream from this, but most of the oil that became fine enough to pass through the holes of the filter 10 Then, it rides on the air flow A as it is, and is discharged to the outside through the exhaust duct D.
  • the range hood 1 of the present embodiment according to the present invention hardly cleans / washes the fan 60, the exhaust duct D, and the like in the downstream portion of the filter 10 while hardly attaching oil to the downstream portion of the air flow path from the filter 10. Time and effort can be greatly reduced.
  • FIG. 9 shows the filter 10 and the electric motor 20 that rotates the filter 10 in this embodiment.
  • the filter 10 and the rotating shaft 21 of the electric motor 20 are detachably connected so that the surface of the filter is perpendicular to the rotating shaft 21.
  • the length of the rotating shaft 21 is determined based on the relationship with the height of the electric motor fixture 40, but is determined so that the filter 10 is located upstream of the lower surface of the mounting plate 50 in a front view.
  • the type of the electric motor 20 is not particularly limited. Although the electric motor 20 has the capability that the rotation speed per unit time is at least about 200 rpm, it is not limited to this.
  • the filter 10 is disk-shaped, and a thin plate having a circular outer shape is manufactured by punching metal.
  • the material is stainless steel, the plate thickness is 0.5 mm, and the diameter is 285 mm, but it is not limited thereto.
  • the shape of the hole 11 provided in the filter 10 will be described later.
  • board thickness of a filter between 0.5 mm and 1.0 mm, since the collection rate in a filter does not change, when the air which produced the flow with a fan passes the hole of a filter, It has been found that most of the oil is collected on the surface of the filter rather than collecting the oil on the side of the hole. Therefore, the range hood according to the present invention can prevent the filter holes from being clogged with oil, reduce the cleaning effort of the filter itself, and prevent pressure loss from increasing as it is used.
  • FIG. 10 shows the oil collecting member 30 in the present embodiment.
  • the oil collecting member 30 has a cylindrical portion surrounding the outer peripheral edge of the disk-shaped filter 10.
  • the cylindrical part has an outer diameter of 294 mm and an inner diameter of 290 mm, which is slightly larger than the diameter of the filter 10.
  • the gap between the two is preferably as small as possible so that oil does not leak.
  • the height of the oil collecting member 30 is not particularly limited, but the shortest distance between the downstream end (upper end) of the oil collecting member 30 and the disk surface on the downstream side of the filter 10 is the height of the oil collecting member 30. It is preferable to have a height equal to or greater than the shortest distance between the upstream end (lower end) and the upstream disk surface of the filter 10. Thereby, the ratio which can also collect the oil component which passed the hole 11 increases by capturing the oil component which scatters toward the outer periphery direction in the downstream of the filter 10, and can make oil collection efficiency higher. .
  • the oil collecting member 30 is provided with a flange at the end (upper end) on the downstream side, and is easy to attach to the mounting plate 50. Moreover, it is preferable that the oil content collection member 30 is provided detachably for cleaning.
  • the oil collecting member 30 includes a U-shaped oil reservoir 31 at the upstream end (lower end), thereby collecting the oil.
  • FIG. 11A shows the shape of the hole 11 of the filter 10 in this embodiment.
  • FIG. 11 (A2) is an enlarged view within the dotted line of the circle in FIG. 11 (A1) (hereinafter the same in this figure).
  • the shape of the hole 11 of the filter 10 is circular, and the diameter of the hole 11 is about 0.75 to 5 mm.
  • the holes 11 in the disk-shaped filter 10 are arranged concentrically around the center of rotation of the disk as shown in (A1).
  • the shape, size, and arrangement of the holes are not limited to this.
  • the hole arrangement may be any arrangement, such as holes being drilled at the vertices of regular triangles, holes being drilled at the vertices of regular squares, or irregularly randomly.
  • the shape of the hole may be any shape such as a triangle, a square, or a regular polygon in addition to the following modifications.
  • FIGS. 11B to 11E show variations of the hole shape.
  • the shape of the hole 11a is an ellipse having a major axis in the radial direction of the disk-shaped filter.
  • the ratio of the minor axis to the major axis is about 1: 2.2, but is not limited to this.
  • the holes 11a are arranged concentrically around the center of rotation of the disk as in (A), but are not limited thereto.
  • the shape of the hole 11b is an ellipse having a minor axis in the radial direction of the disk-shaped filter.
  • the ratio of the minor axis to the major axis is about 1: 2.4, but is not limited to this.
  • the holes 11b are arranged concentrically around the center of rotation of the disk, as in (B), but are not limited thereto.
  • the shape of the hole 11c is a rectangle.
  • the ratio of the short side to the long side is about 1: 3.5, but is not limited to this.
  • the hole 11c has an angle in which the direction of the long side is neither the radial direction nor the circumferential direction, but is not limited thereto.
  • the direction of the long side may form the radial direction.
  • the shape of the hole 11d is an irregular polygon. It is shaped like a combination of a rectangle and a triangle, and the shape is such that the vertex of the triangle faces in the rotation direction, but it is not limited to this, and the vertex of the triangle may face in the direction opposite to the rotation direction .
  • One filter may be provided on one filter, and a combination of two or more shapes may be used.
  • molding a hole (slit) by cutting and raising there may be a cutting and raising part like a general slot filter with the hole (slit).
  • the region where the holes on the filter are provided may be the entire filter surface or a part thereof.
  • the area where the hole is provided may be an area close to the outer peripheral edge of the disk-shaped filter (that is, the area close to the rotation center is not provided with a hole). It may be a region near the rotation center of the filter (that is, a region near the outer peripheral edge is not provided with a hole).
  • the rotation speed is faster near the outer peripheral edge, so it is preferable to provide the hole in a region near the outer peripheral edge of the disk-shaped filter.
  • the diameter DA (m) in the circumferential direction of the hole is the maximum value of the length of the arc sandwiched between both ends of the hole in a concentric circle that crosses the hole around the rotation center of the filter.
  • the hole diameter passing time is expressed as DA / Vx (seconds) when the peripheral speed at the distance Rx (m) from the rotation center is Vx (m / second).
  • the pore diameter average passage time tx (seconds) is an average of the pore diameter passage times over the entire filter, and is represented by the equation (1).
  • the radius outside the region where the holes in the filter are present is Rmax (m)
  • the radius inside the region where the holes are in the filter is Rmin (m)
  • the number of rotations per second of the filter is N (/ second).
  • the angular velocity of the filter be ⁇ (radians / second).
  • region with a hole on a filter exists concentrically centering on a rotating shaft, and a hole shall be distributed uniformly in the area
  • the hole diameter passage time is DA / 2 ⁇ NRx
  • the hole diameter average passage time tx is as follows.
  • the average hole diameter passage time is the average value of the filter for the time required for one end and the other end of the diameter of the filter hole in the circumferential direction to pass through one point on a certain circumference.
  • the length of the arc in the circumferential direction across the hole existing in the radial position where the inner and outer areas are the same that is, the length of the diameter in the circumferential direction of the hole It can be said that it is the time required to move. This will be described with reference to FIG.
  • the circular hole 11 moves in the circumferential direction at a speed of V (m / sec) while drawing an arc from the left to the right in the drawing centering on the rotation center (not shown) of the filter.
  • Points ⁇ and ⁇ are points on the outer circumference of the hole 11 and on the same circumference of the center of rotation, and point ⁇ is a midpoint of the arc ⁇ . Accordingly, the points ⁇ and ⁇ are one end and the other end of the diameter of the hole 11 in the circumferential direction.
  • the length of the arc ⁇ is the maximum value. This is a case where the straight line connecting the points ⁇ and ⁇ is the diameter of the hole 11. In this case, the length of the arc ⁇ is DA.
  • the time required for one end (point ⁇ ) and the other end (point ⁇ ) of the diameter of the hole 11 in the circumferential direction to pass one point (point ⁇ ) on a certain circumference is the point ⁇ is the point ⁇ Is the time from when the point ⁇ passes the point ⁇ .
  • FIG. 12 is a graph showing the relationship between the average pore diameter passage time tx and the collection rate in the range hood according to the present invention.
  • Each plot on the graph shows the average pore diameter passage time and collection rate as measured by rotating filters of various pore sizes at various revolutions per unit time.
  • the average pore diameter passage time is about 2.7 ⁇ 10 ⁇ 4 seconds by a solid regression curve. Therefore, if the average pore diameter passage time is 3.2 ⁇ 10 ⁇ 4 seconds or less, a range hood with high oil collection efficiency can be provided.
  • the range hood according to the present invention is capable of adjusting the average pore diameter passage time using the filter rotation speed and the filter hole diameter as parameters. Since the regression curve descends to the lower right, in order to improve the collection rate, it is preferable to decrease the average pore diameter passage time. Accordingly, in order to obtain a collection rate of about 80%, it may be about 1.8 ⁇ 10 ⁇ 4 seconds, and preferably about 1.5 ⁇ 10 ⁇ 4 seconds. Further, in order to obtain a collection rate of about 90%, it may be about 0.98 ⁇ 10 ⁇ 4 seconds, and preferably about 8.0 ⁇ 10 ⁇ 5 seconds.
  • Table 1 shows the relationship between the filter pore diameter (mm) and the rotational speed (rpm) and the collection rate in this example.
  • the collection rate was measured with four types of hole diameters of 0.75 mm, 1 mm, 1.5 mm, and 2 mm.
  • the rotational speed of the filter is 0 rpm, it can be seen that the collection efficiency is less than 70% which is the best collection rate of the conventional filters at any hole diameter, and the filter not rotating is not high.
  • the trapping rate is 77% even in the filter with the lowest trapping rate of 2 mm, which exceeds the trapping rate of the conventional best filter.
  • the collection rate further increases to 80%, 86%, and 88%.
  • the rotation speed of the filter is 1500 rpm, the collection rate becomes higher as 84%, 86%, 91%, and 93% as the hole diameter decreases to 2mm, 1.5mm, 1mm, and 0.75mm.
  • the rotational speed of the filter is 2000 rpm
  • the collection rate becomes 88%, 90%, and 90% as the hole diameter decreases to 2 mm, 1.5 mm, and 1 mm. Therefore, the range hood which concerns on this invention collects the oil component contained in air, when a fan rotates a filter, generating the flow of air. Furthermore, it can be seen that when the number of rotations per unit time of the filter is increased or the pore diameter is decreased, high oil collection efficiency can be obtained.
  • the average pore diameter passage time exceeding the collection rate of 70% is 3.2 ⁇ 10 ⁇ 4 seconds, and this average pore diameter passage time is determined by the combination of the pore diameter and the rotational speed of the filter. Then, in the case of the following combinations of the hole diameter and the rotational speed, the average hole diameter is 3.2 ⁇ 10 ⁇ 4 seconds, and a collection rate of 70% can be realized.
  • -The hole diameter that is, the diameter in the circumferential direction of the hole is 0.75 mm or less, and the rotational speed of the filter is 230 rpm or more, or -The hole diameter is 1.00 mm or less and the rotational speed of the filter is 310 rpm or more, or -The hole diameter is 1.50 mm or less and the rotational speed of the filter is 460 rpm or more, or -The hole diameter is 2.00 mm or less and the rotational speed of the filter is 620 rpm or more, or -A range hood with high oil collection efficiency can be provided when the hole diameter is 5.00 mm or less and the rotational speed of the filter is 1500 rpm or more.
  • the average passage time of the pore diameter exceeding the collection rate of 70% is 2.7 ⁇ 10 ⁇ 4 seconds.
  • -The hole diameter that is, the diameter in the circumferential direction of the hole is 0.75 mm or less, and the rotational speed of the filter is 270 rpm or more, or -The hole diameter is 1.00 mm or less and the rotational speed of the filter is 360 rpm or more, or -The hole diameter is 1.50 mm or less and the rotational speed of the filter is 540 rpm or more, or -The hole diameter is 2.00 mm or less and the rotational speed of the filter is 720 rpm or more, or -A range hood with high oil collection efficiency can be provided when the hole diameter is 5.00 mm or less and the rotational speed of the filter is 1800 rpm or more.
  • the range hood according to the present invention can reduce the cleaning effort of the filter itself by less oil remaining on the filter.
  • FIG. 13 shows the test configuration used in the test for obtaining the relationship between the collection rate of the filter in the range hood using the present embodiment and a conventional type slot filter, and the adhesion of oil to downstream parts such as fans and ducts.
  • FIG. 13 Using the fact that the collection rate varies depending on the difference in the pore diameter of the filter of this example, and to check the oil adhesion state to the downstream parts due to the difference in the collection rate of the filter, the following test was conducted. .
  • the test method is as follows.
  • a range hood provided with a filter or the like according to the present invention is provided 800 mm above the hot plate capable of controlling the temperature.
  • a stainless steel cylinder is placed on a hot plate heated to 245 ° C., and oil is dropped from the pump onto the stainless steel cylinder at a rate of 2.5 g / min and water at 8 g / min.
  • the test time is 10 minutes.
  • the rotation speed of the filter is 1500 rpm.
  • the collection rate at the filter is clearly high at 83% or more.
  • the collection rate of the conventionally known range hood is 70% at the best
  • the range hood according to the present invention used in this test is 83% or more despite the change in the pore diameter. It has a collection rate, and it can be said that the range hood according to the present invention has a high collection efficiency. Therefore, in the range hood according to the present invention, the oil component hardly adheres to the downstream portion of the filter in the air flow path, and therefore the labor for cleaning / washing the downstream portion of the filter can be greatly reduced.
  • FIG. 14 shows a range hood 1 ′ which is a modification of the first embodiment according to the present invention.
  • the description overlapping with the first embodiment is omitted, and only different points will be described.
  • the range hood 1 ′ has a thin hood portion 80 ′ having a concave inner panel 81 ′ on the inner surface for collecting steam, oily smoke, etc. generated by cooking performed below.
  • the hood portion 80 ′ is connected to an exhaust duct D and is connected to a blower box 82 having a fan 60 that generates an air flow therein, in the vicinity of the hood opening portion 2 ′ located at substantially the center thereof.
  • the suction port 62 of the fan 60 is disposed so as to be located in the hood opening 2 ′ of the hood 80 ′. Accordingly, when the fan 60 is operated, the air below the inner panel 81 ′ is sucked through the hood opening 2 ′ and discharged to the outside through the exhaust duct D. That is, the hood opening 2 ′ is located on the upstream side of the fan 60 on the flow path of the air flow generated by the fan 60.
  • the hood opening 2 ′ has a disk-shaped filter 10 having a hole through which air flows, a motor 20 having a rotating shaft connected to the center of the disk of the filter 10, and rotating the filter 10.
  • a motor 20 having a rotating shaft connected to the center of the disk of the filter 10, and rotating the filter 10.
  • the filter 10 having the above is rotatably provided.
  • the air below the inner panel 81 ′ contains steam, oily smoke, etc. generated by cooking.
  • the fan 60 When the fan 60 is operated, it exists in the hood opening 2 ′, that is, the flow of air flow generated by the fan 60. It is sucked into the hole of the filter 10 located on the road and upstream of the fan 60, and passes through the hole.
  • the filter 10 is rotatably provided by the electric motor 20, and when the range hood 1 ′ is operated, the fan 60 generates an air flow and the electric motor 20 rotates the filter 10.
  • the range hood 1 ′ collects oil contained in the air in the oil collecting member 30 ′ by rotating the filter 10.
  • this modification does not include the mounting plate 50 provided in this embodiment, and the oil collecting member 30 ′ is provided with the inner panel 81. 'Attached directly to.
  • Such a configuration of the range hood 1 ′ has a reduced number of parts, and can increase the area of the surface of the filter (inner part of the hole) for collecting oil and the total area of the holes through which air flows. Therefore, it is possible to provide a range hood with high oil collection efficiency and low pressure loss.
  • FIG. 15 shows a range hood 1A according to the second embodiment of the present invention.
  • the range hood 1A includes a thin hood portion 80A having a concave inner panel 81A on the inner surface for collecting steam, oily smoke, etc. generated by cooking performed below.
  • the hood portion 80A is connected to the blower box 82A connected to the exhaust duct DA in the vicinity of the hood opening 2A located at substantially the center thereof.
  • the blower box 82A has a fan casing 61A inside, and the fan casing 61A has a fan 60A that is a sirocco fan and generates an air flow AA.
  • the suction port 62A of the fan 60A is opened in a substantially vertical plane, and is arranged away from the hood opening 2A of the hood portion 80A opened in a substantially horizontal plane. Since the blower box 82A itself and the connecting portion between the blower box 82A and the hood portion 80A are airtight, when the fan 60A operates, the inside of the blower box 82A becomes negative pressure, and the air below the inner surface panel 81A is sucked through the hood opening 2A. And is discharged to the outside through the exhaust duct DA. That is, the hood opening 2A is located on the upstream side of the fan 60A on the flow path of the air flow AA generated by the fan 60A.
  • a mounting plate 50A that is attached so as not to generate a gap that can be an air flow path between the inner surface panel 81A, a disk-shaped filter 10A that has holes through which the air flow AA passes, A rotary shaft is connected to the center of the disk of the filter 10A, the motor 20A rotates the filter 10A, a motor attachment 40A for attaching the motor 20A to the attachment plate 50A, and an outer peripheral edge of the filter 10A attached to the attachment plate 50A.
  • the range hood 1A is on the flow path of the air flow AA generated by the fan 60A and is upstream of the flow of the fan 60A, and allows the air flow AA to pass from the bottom to the top in the drawing.
  • a filter 10A having a hole is rotatably provided.
  • the air below the inner surface panel 81A contains steam, oily smoke, etc. generated by cooking.
  • the fan 60A When the fan 60A is operated, it exists in the hood opening 2A, that is, on the flow path of the air flow AA generated by the fan 60A. Then, the air is sucked into the hole of the filter 10A located on the upstream side of the fan 60A and passes through the hole.
  • the filter 10A is rotatably provided by the electric motor 20A.
  • the range hood 1A When the range hood 1A is operated, the fan 60A generates an air flow AA and the electric motor 20A rotates the filter 10A.
  • the range hood 1A collects the oil contained in the air in the oil collecting member 30A by rotating the filter 10A.
  • FIG. 16 shows a range hood 1B according to the third embodiment of the present invention.
  • the description overlapping with the first embodiment is omitted, and only different points will be described.
  • the range hood 1B includes a hood portion 80B including an inner panel 81B having an obliquely inclined portion for collecting steam, oily smoke, and the like generated by cooking performed below.
  • the hood portion 80B is coupled to the blower box 82B connected to the exhaust duct DB in the vicinity of the coupling portion with the inner surface panel 81B.
  • the blower box 82B has a fan casing 61B inside, and the fan casing 61B has a fan 60B that is a sirocco fan and generates an air flow AB inside.
  • the suction port 62B of the fan 60B is opened in a substantially vertical plane, and is arranged away from the hood opening 2B opened in a plane inclined approximately 45 degrees from the horizontal. Since the blower box 82B itself and the connecting portion between the blower box 82B and the hood portion 80B are airtight, when the fan 60B operates, the inside of the blower box 82B becomes negative pressure, and the air inside the hood portion 80B passes through the hood opening 2B. Inhaled and discharged to the outside through the exhaust duct DB. That is, the hood opening 2B is located on the upstream side of the fan 60B on the flow path of the air flow AB generated by the fan 60B.
  • a mounting plate 50B that is attached so as not to generate a gap that can be an air flow path between the inner surface panel 81B, a disk-shaped filter 10B that has holes through which the air flow AB passes,
  • a rotary shaft is connected to the center of the disk of the filter 10B, the motor 20B rotates the filter 10B, the motor attachment 40B for attaching the motor 20B to the attachment plate 50B, and the outer peripheral edge of the filter 10B attached to the attachment plate 50B.
  • the range hood 1B is on the flow path of the air flow AB generated by the fan 60B and is upstream of the flow of the fan 60B, and passes the air flow AB from the bottom to the top in the drawing.
  • a filter 10B having holes is rotatably provided.
  • the air below the inner panel 81B includes steam, oily smoke, etc. generated by cooking.
  • the air is present in the hood opening 2B, that is, on the flow path AB of the air flow AB generated by the fan 60B. Then, the air is sucked into the hole of the filter 10B located on the upstream side of the fan 60B and passes through the hole.
  • the filter 10B is rotatably provided by the electric motor 20B.
  • the range hood 1B When the range hood 1B is operated, the fan 60B generates an air flow AB and the electric motor 20B rotates the filter 10B.
  • the range hood 1B collects oil contained in the air in the oil collecting member 30B by rotating the filter 10B.
  • FIG. 17 shows a range hood 1C according to the fourth embodiment of the present invention.
  • the description overlapping with the first embodiment is omitted, and only different points will be described.
  • the range hood 1 ⁇ / b> C includes a hood portion 80 ⁇ / b> C having a concave inner panel 81 ⁇ / b> C on the inner surface for collecting steam, oily smoke, and the like generated by cooking performed below.
  • the hood portion 80C is connected to the exhaust box DC near the hood opening 2C located at the center of the hood portion 80C, and is connected to a blower box 82C having a fan 60C that generates an air flow therein.
  • the suction port 62C of the fan 60C is disposed so as to be positioned in the hood opening 2C of the hood portion 80C. Therefore, when the fan 60C is operated, the air below the inner panel 81C is sucked through the hood opening 2C and discharged to the outside through the exhaust duct DC. That is, the hood opening 2C is located on the upstream side of the fan 60C on the flow path of the air flow generated by the fan 60C.
  • the hood opening 2C has a mounting plate 50C attached so as not to generate a gap that can be an air flow path between the inner panel 81C, a cylindrical filter 10C having a hole through which air flows, and a filter
  • the motor 10C is connected so that the axis of the cylinder of the cylinder 10C coincides with the rotation axis, rotates the filter 10C, the motor attachment 40C for attaching the motor 20C to the oil collecting member 30C, and the attachment plate 50C.
  • the range hood 1C is provided on the air flow path generated by the fan 60C, upstream of the flow from the fan 60C, and has a hole through which the air flow passes from the outside to the inside of the cylinder.
  • the filter 10 ⁇ / b> C provided on the side surface of the filter is rotatably provided.
  • the air below the inner surface panel 81C contains steam, oily smoke, etc. generated by cooking.
  • the fan 60C When the fan 60C is operated, it exists in the hood opening 2C, that is, on the flow path of the air flow generated by the fan 60C. Thus, the air is sucked into the hole of the filter 10C located on the upstream side of the fan 60C and passes through the hole.
  • the filter 10C is rotatably provided by the electric motor 20C.
  • the range hood 1C When the range hood 1C is operated, the fan 60C generates an air flow and the electric motor 20C rotates the filter 10C.
  • the range hood 1C collects the oil contained in the air in the oil collecting member 30C by rotating the filter 10C.
  • the first embodiment includes a disk-shaped filter 10, whereas the present embodiment has a cylindrical filter 10C whose axial center is substantially vertical. It is equipped with.
  • the cylindrical filter 10 ⁇ / b> C has a hole that allows the air to pass through the side surface of the cylinder by rotating the cylinder by connecting the rotation shaft of the electric motor 20 ⁇ / b> C to the axis of the cylinder.
  • the air flow is configured to pass from the outside to the inside of the side surface of the cylinder. Since the filter 10C sucks the air flow from the side surface of the cylinder, the bottom surface of the cylinder is not open.
  • the oil collecting member 30C is provided so as to surround the entire side surface of the filter 10C. When air containing oil hits the filter 10C, the oil hits the side surface (surface without holes) of the cylinder, and the impacted oil is bounced off to the oil collecting member 30C by the side of the cylinder and collected in the oil reservoir 31C.

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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)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
PCT/JP2012/083625 2011-12-28 2012-12-26 レンジフード WO2013099930A1 (ja)

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CN109307300A (zh) * 2018-10-15 2019-02-05 珠海格力电器股份有限公司 一种集油盘系统及吸油烟机

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JP6276057B2 (ja) * 2014-02-17 2018-02-07 株式会社Ｌｉｘｉｌ レンジフード
CN105889997A (zh) * 2014-09-22 2016-08-24 钱文进 一种能够使油烟分离的带净化器叶盘的吸油烟机
CN105351994B (zh) * 2015-11-27 2017-10-03 周捷 用于除油烟的多级过滤装置
JP6382929B2 (ja) * 2016-12-27 2018-08-29 富士工業株式会社 レンジフード
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JP7341481B2 (ja) * 2020-01-30 2023-09-11 富士工業株式会社 レンジフード
CN111351091B (zh) * 2020-04-28 2022-02-18 佛山市顺德区美的洗涤电器制造有限公司 吸油烟机
CN111351092B (zh) * 2020-04-28 2022-02-18 佛山市顺德区美的洗涤电器制造有限公司 吸油烟机
CN111720871B (zh) * 2020-07-04 2023-03-28 中山市喜玛拉雅电器有限公司 一种油烟再利用油烟机
CN111720870B (zh) * 2020-07-04 2022-11-25 中山市志美电器有限公司 一种油烟高效净化油烟机
WO2022035103A1 (en) 2020-08-13 2022-02-17 Samsung Electronics Co., Ltd. Range hood
KR20220021394A (ko) 2020-08-13 2022-02-22 삼성전자주식회사 레인지 후드
JP7240764B1 (ja) 2021-08-31 2023-03-16 富士工業株式会社 油捕集装置
CN115531995B (zh) * 2022-10-10 2023-10-13 徐州乐生车业有限公司 一种环卫车用空气净化装置

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CN103185358A (zh) 2013-07-03
MY160453A (en) 2017-03-15
CN103185358B (zh) 2016-10-19
SG11201403676TA (en) 2014-12-30
MY160452A (en) 2017-03-15
CN106152216A (zh) 2016-11-23
TWI544185B (zh) 2016-08-01
JP5631860B2 (ja) 2014-11-26
TWI570367B (zh) 2017-02-11
TW201346193A (zh) 2013-11-16

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