WO2019031299A1

WO2019031299A1 - Oily smoke trapping device

Info

Publication number: WO2019031299A1
Application number: PCT/JP2018/028583
Authority: WO
Inventors: 寛之阿部
Original assignee: 富士工業株式会社
Priority date: 2017-08-10
Filing date: 2018-07-31
Publication date: 2019-02-14
Also published as: CN110998197B; JP6640155B2; SG11202000854SA; JP2019035515A; CN110998197A; MY190831A

Abstract

An objective of the present invention is to provide an oily smoke trapping device with which the transmission of noise generated by a fan into a room can be suppressed without reducing air intake/exhaust performance and cleanliness. This oily smoke trapping device 100 comprises a motor 30, a fan 20 that is attached to a motor rotary shaft 31 and that generates a flow of air, and a fan casing 10 in the interior of which the fan is contained. In this oily smoke trapping device 100, the fan casing has an intake opening 11 for drawing in air, an exhaust opening 12 for exhausting air, a communication opening 13 provided so as to face the intake opening, and is equipped with a noise-absorbing material 40 on the side opposite the intake opening, with the communication opening interposed therebetween. The communication opening spatially connects the fan and the noise-absorbing material, and the outer edge E of the communication opening is provided at the same position as the outer diameter L of the fan or on the inside of the outer diameter of the fan.

Description

Oil smoke collector

The present invention relates to an oil smoke collecting apparatus.

2. Description of the Related Art Conventionally, there has been proposed an oil smoke collecting device in which soundproofing measures have been taken inside the oil smoke collecting device so that the sound generated by the fan (fan) of the oil smoke collecting device such as a range hood is not transmitted to the room. For example, Patent Document 1 discloses a box-shaped hood main body having a blower open inside and the entire lower surface, a front hood provided so as to cover the front of the hood main body, and a cylindrical tube with a bottom and sound absorption inside. A range hood is disclosed which has a suction port on a cylindrical portion in the vicinity of the bottom portion with a material attached, and a sound-insulated cylinder connected in communication with the air-suction port at the opening end. This range hood has a sound insulation cylinder with a sound absorbing material stuck inside at the suction port of the fan, and the sound generated from the blower propagates while being absorbed by the sound absorption material inside the sound insulation cylinder, so that the sound is produced outside the range hood Since the sound is attenuated when propagating, it does not give discomfort to the occupants.

Japanese Utility Model Publication No. 03-052534

However, in the above range hood (oil smoke collection device), the sound insulation cylinder is provided at the suction port of the blower, so the air flow resistance increases, and the performance of intake and exhaust of the range hood (oil smoke collection device) deteriorates. There is a risk that new noise may be generated due to the provision of the sound insulation cylinder. In addition, since the suction port of the blower is a flow path of air containing oil, it is easily contaminated with oil, and there has been a problem that cleaning must be performed frequently.
Therefore, the present invention provides an oil smoke collecting apparatus which suppresses the transmission of noise generated by a fan into a room without reducing the performance and cleaning performance of the air suction and discharge.

In order to solve the above problems, an oil smoke collecting apparatus comprising: a motor; a fan attached to a rotating shaft of the motor and generating a flow of air; and a fan casing including the fan therein, the fan casing comprising A suction port for sucking in air, a discharge port for discharging air, and a communication port provided to face the suction port, and a sound absorbing material on the opposite side to the suction port across the communication port The communication port spatially communicates the fan with the sound absorbing material, and the outer edge of the communication port is provided so that the outer diameter of the communication port is the same as the outer diameter of the fan or inside the outer diameter of the fan Provided.
According to this, by providing the communication port that spatially communicates the fan and the sound absorbing material and providing the sound absorbing material outside the flow path of the air containing oil, the sound absorbing material is not contaminated and the air Since there is no flow resistance, it is possible to provide an oil smoke collecting apparatus in which the noise generated by the fan is prevented from being transmitted into the room without reducing the performance and cleaning performance of the air suction and discharge.

Furthermore, the sound absorbing material may be provided with a first space between the communication port and the communication port.
According to this, by providing the sound absorbing material with the first space between the communication port and the communication port, the sound spreads and propagates from the communication port, so that the sound can be absorbed in a wider area, and the sound can be absorbed efficiently. Can.

Furthermore, the fan has a power transmission plate connected to the rotation shaft and a plurality of fins around the power transmission plate, and the power transmission plate is connected to the ring portion connected to the plurality of fins and the rotation shaft It may be characterized by having a center portion, a spoke portion provided between the center portion and the ring portion, and a plurality of power transmission plate openings surrounded by the ring portion, the center portion and the spoke portion.
According to this, by providing the opening in the power transmission plate, the sound can be easily propagated to the communication port, and the sound can be absorbed more.

Furthermore, the power transmission plate may be characterized in that it is provided on the communication port side with respect to the central position of the fan in the rotation axis direction.
According to this, since the power transmission plate is provided on the communication port side from the center position of the fan, the power transmission plate does not become a resistance at the time of air exhaust, so that the air can be exhausted more efficiently and noise can be reduced. In addition, since the distance between the power transmission plate and the sound absorbing material is reduced, the sound generated by the power transmission plate can be absorbed more efficiently.

Furthermore, at least a part of the motor may be provided so as to be located farther from the suction port than a portion closest to the communication port of the fan.
According to this, by providing at least a part of the motor so as to be away from the suction port rather than the portion closest to the communication port of the fan, the motor does not become a resistance at the time of air exhaustion, and hence more efficient While exhausting, noise can be reduced. In addition, since the distance between the motor and the sound absorbing material is reduced, the sound generated by the motor can be absorbed more efficiently.

Furthermore, the second space may be characterized in that it has a second space located farther from the suction port than the sound absorbing material, and the second space is a space enclosed to attenuate sound.
According to this, by providing the second space surrounded by the sound absorbing material on the opposite side of the communication port so as to attenuate the sound, the sound that can not be absorbed by the sound absorbing material can be propagated to the inside of the cover By doing this, the sound that can not be absorbed can be absorbed by the reflection within the cover and can be prevented from propagating out of the oil smoke collection device.

Furthermore, the second space may be characterized as a closed space.
According to this, since the second space is closed, the sound propagated to the second space is unlikely to escape to the outside of the second space, and sound can be absorbed more efficiently.

As described above, according to the present invention, it is possible to provide an oil smoke collecting apparatus in which noise generated by a fan is prevented from being transmitted indoors without reducing exhaust performance and cleanability.

Six faces of the range hood according to the first embodiment of the present invention. (A) Top view, (B) Front view, (C) Bottom view, (D) Right side view, (E) Rear view, (F) Left side view. FIG. 2A is a cross-sectional view taken along the line A-A shown in FIG. 1 of the cooker hood according to the first embodiment of the present invention, and FIG. FIG. 2A is a cross-sectional view of the range hood of the first embodiment according to the present invention taken along the line B-B shown in FIG. 1; FIG. (A) A cross-sectional view taken along the line A-A shown in FIG. 1 of the cooker hood of a modification of the first embodiment according to the present invention, (B) an enlarged cross-sectional view around the sound absorbing material. The range hood in the modification of the first embodiment concerning the present invention in the (A) BB cross section shown in Drawing 1 (A), the expanded sectional view near the sound absorption material (B). Six views of the range hood of the 2nd example concerning the present invention. (A) Top view, (B) Front view, (C) Bottom view, (D) Right side view, (E) Rear view, (F) Left side view. (A) Sectional drawing in the AA cross section shown in FIG. 6 of the range hood of the 2nd example concerning the present invention, (B) The expanded sectional view near sound absorption material. (A) Sectional drawing in the BB cross section shown in Drawing 6 of the cooker hood of the 2nd example concerning the present invention, (B) The expanded sectional view near sound absorption material. (A) top view, (B) front view, (C) bottom view, (D) right side view, (E) left side view, (F) right oblique of the range hood of the third example according to the present invention FIG. 6 is a perspective view from above, (G) a perspective view from the right oblique bottom, (H) a perspective view from the left oblique top, and (I) a perspective view from the left oblique bottom. Sectional drawing in the AA cross section shown in FIG. 9 of the cooker hood of 3rd Example which concerns on this invention. Sectional drawing in the AA cross section shown in FIG. 9 of the cooker hood of the modification of the 3rd Example which concerns on this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First Embodiment
The oil smoke collecting apparatus 100 provided in the range hood 1 according to the present embodiment will be described with reference to FIGS. 1 to 3. The range hood 1 is installed around a cooker (not shown), collects steam, oil smoke and the like generated by cooking, and goes outside through a duct (not shown) to which the duct connection portion 6 is connected. It is a range hood that exhausts. The range hood 1 has a main body 2 having a duct connection portion 6, a cover 50 connected to the upper surface of the main body 2 and having a part of the motor 30 and a sound absorbing material 40 inside, and collecting steam, oil smoke, etc. It has a thin hood portion 3 having a concave upper surface panel 4 on the inner surface, and a straightening vane 5 for straightening air between the inner surface panel 4 and the thin hood portion 3. The hood portion 3 is connected to the main body 2 so as to communicate with the suction port 7 provided in the inner surface panel 4.

The oil smoke collecting apparatus 100 is provided inside the main body 2 and the cover 50. The oil smoke collecting apparatus 100 includes a motor 30, a rotating shaft 31 of the motor 30, a fan 20 for generating a flow of air, and a fan casing 10 including the fan 20 therein. Since the motor 30 is provided in the range hood 1 installed in the room of the oil smoke collecting apparatus 100 of the present embodiment, an AC motor is preferable, but the present invention is not limited to this. May be The fan 20 is a high static pressure sirocco fan, and in the present embodiment, sucks air including oil smoke and the like from the suction port 7 located below and forms an exhaust flow directed in the horizontal direction. The fan 20 has a power transmission plate 21 connected to the rotation shaft 31 of the motor 30 and a plurality of fins around the power transmission plate 21.

The fan casing 10 includes a suction port 11 for sucking air, a discharge port 12 for discharging air sucked from the suction port 11, and a communication port 13 provided to face the suction port 11. When the motor 30 is energized and the fan 20 inside the fan casing 10 rotates, air including oil smoke and the like is drawn from the gap between the current plate 5 and the inner panel 4. The air is sucked into the inside of the fan casing 10 from the suction port 11 via the suction port 7 opened at the substantially central portion of the inner surface panel 4. The oil contained in the air sucked into the fan casing 10 is removed from the air by colliding with and adhering to the fins 22 of the fan 20. The air from which oil is removed forms an exhaust flow in the centrifugal direction (horizontal direction) of the fan 20 and is discharged from the outlet 12. The air flow (flow path) generated by the rotation of the fan 20 is sucked in a direction from the bottom to the top at the suction port 11, and is changed from that in the centrifugal horizontal direction and is discharged from the discharge port 12 It is a flow (flow path).

The communication port 13 is provided on the upper surface of the fan casing 10 so as to face the suction port 11 provided on the lower surface of the fan casing 10. The fan 20 is disposed below the communication port 13, the main body of the motor 30 is disposed above the communication port 13, and the rotary shaft 31 of the motor 30 is disposed to cross the communication port 13. The motor 30 is attached to the upper surface of the fan casing 10 and supported by a motor attachment 32 provided so as to straddle the communication port 13 at a height of 1/3 of the lower part of the main body of the motor 30 There is. The motor attachment 32 has a band-like shape that can support the motor 30, as shown only in the BB cross section (FIG. 3 (B)). The outer edge E of the communication port 13 is provided so as to be the same as the edge formed from the outer diameter L of the fan 20 or closer to the rotation shaft 31 than the edge formed from the outer diameter L of the fan 20.

In the present embodiment, the main body of the motor 30 is disposed on the upper side of the communication port 13 and the rotation shaft 31 of the motor 30 is disposed to cross the communication port 13. May be arranged to enter the inside of the fan 20. However, as in the present embodiment, by providing at least a part of the motor 30 to be located in a direction away from the suction port 11 rather than the portion P on the communication port 13 side of the fan 20 most, Since 30 does not become a resistance, while being able to exhaust more efficiently, a noise can be reduced. Further, since the distance between the motor 30 and the sound absorbing material 40 becomes close, the sound generated by the motor 30 can be absorbed more efficiently.

The sound absorbing material 40 substantially covers the inside of the cover 50 on the lower surface of the motor attachment 32, that is, the side of the communication attachment 13 relative to the motor attachment 32 on the opposite side to the suction opening 11 with the communication opening 13 interposed therebetween. Provided. By providing the sound absorbing material 40 in this manner, the communication port 13 spatially communicates the fan 20 with the sound absorbing material 40. That is, the fins 22 of the fan 20 serving as a sound generation source and the sound absorbing material 40 have a positional relationship in which they are spatially communicated via the communication port 13. In addition, since the communication port 13 is on the motor 30 side (upper side) than the fan 20, it is not on the above-described air flow path, and is further on the upper side than such communication port 13 and the air does not flow Since the sound absorbing material 40 disposed inside is not on the above-described air flow path, it is disposed at a position where air including oil smoke does not enter. The sound absorbing member 40 refers to, for example, a sound absorbing member or a sound absorbing and resonance member, and as a non-limiting example, a fibrous sound absorbing member made of glass wool, rock wool, metal fibers etc., urethane foam, melamine foam, powder sintering etc. And a member utilizing interference of sound in a space comprising a perforated plate, a perforated plate, a Helmholtz type sound absorber, an interference type silencer such as a side branch, and the like.

As described above, in order to facilitate the transmission of sound, the communication port 13 in which the fan 20 and the sound absorbing material 40 are spatially communicated is provided, and the sound absorbing material 40 is provided outside the flow path of the air containing oil. Since the sound absorbing material 40 does not become dirty and does not become air flow resistance, the noise generated by the fan 20 is prevented from being transmitted into the room without reducing the performance and cleaning performance of the air intake and exhaust. The oil smoke collecting apparatus 100 can be provided.

Also, the sound absorbing material 40 is provided between the communication port 13 and the first space S1. That is, since the communication port 13 is provided at a position crossing the rotation shaft 31 of the motor 30 and the sound absorbing material 40 is at a height of about one third of the lower part of the main body of the motor 30, A first space S1 of about 1/3 of the height of the main body is provided. As described above, the sound absorbing material 40 is provided with the first space S1 between the sound absorbing material 40 and the communication port 13, so that even if there is an obstacle that blocks the transmission of sound between the sound absorbing material 40 and the communication port 13, communication occurs. Since the sound spreads from the mouth 13 and propagates, sound can be absorbed in a wider area, and sound can be absorbed efficiently. A plurality of sound absorbing materials 40 may be stacked. In this case, it is preferable to provide a space (a space) between the sound absorbing material 40 and the sound absorbing material 40. In addition, the edge of the sound absorbing material 40 is preferably located outside the outer edge E of the communication port 13 (the side away from the rotation shaft 31). Thus, the sound transmitted from the communication port 13 to the outside of the fan casing 10 can be absorbed more efficiently.

In addition, the oil smoke collecting apparatus 100 is a cover located so as to form a second space S2 which is located away from the suction port 11, that is, above the sound absorbing material 40 and which communicates with the first space S1 at both ends of the sound absorbing material 40. 50 is provided. As described above, by providing the second space S2 communicating with the first space S1 in part on the opposite side of the communication port 13 with the sound absorbing material 40 interposed therebetween, the second space is enclosed so as to attenuate the sound. It can be said that it is space. “The sound is enclosed so as to be attenuated” means that there is a space on the back of the sound absorbing material, and the sound incident on the space is reflected on the back of the sound absorbing material so that the sound is attenuated by interference. Meaning that there is a space. According to this, by providing the second space surrounded by the sound absorbing material on the opposite side of the communication port so as to attenuate the sound, the sound that can not be absorbed by the sound absorbing material can be propagated to the inside of the cover By doing this, the sound that can not be absorbed can be absorbed by the reflection within the cover and can be prevented from propagating out of the oil smoke collection device. The sound absorbing material has a gap between the cover and the sound absorbing material and the motor, and the second space is an unclosed space. The two spaces may be closed spaces. According to this, since the second space is closed, the sound propagated to the second space is unlikely to escape to the outside of the second space, and sound can be absorbed more efficiently.

The fan 20 has a power transmission plate 21 connected to the rotation shaft 31 and a plurality of fins 22 around the power transmission plate 21. The power transmission plate 21 has the outermost periphery of the power transmission plate 21. A ring portion 211 formed and connected to the plurality of fins 22, a central portion 212 actually connected to the rotary shaft 31, a spoke portion 213 provided between the central portion 212 and the ring portion 211, and a ring portion A plurality of power transmission plate openings 214 surrounded by a central portion 212 and a spoke portion 213 are provided. For example, if there are three spokes 213, there are also three power transmission plate openings 214, and if there are four spokes 213, there are also four power transmission plate openings 214. The spoke portion 213 needs strength to transmit the rotational driving force of the motor 30 from the central portion 212 to the ring portion 211, but the total area of the power transmission plate opening 214 is increased to increase the aperture ratio in the power transmission plate 21. The width of the spokes 213 is preferably narrow so as not to be reduced. As described above, by providing the power transmission plate opening 214 in the power transmission plate 21, the sound of the fan 20 can be easily transmitted to the communication port 13 and sound can be absorbed more.

Further, in the present embodiment, the power transmission plate 21 is positioned closest to the communication port 13 of the fan 20 in the direction of the rotary shaft 31, but the invention is not limited thereto. It may be provided on the side. As described above, the power transmission plate 21 is provided on the communication port 13 side from the central position of the fan 20, so that the power transmission plate 21 does not become a resistance at the time of air exhaust, so that the air can be exhausted more efficiently and noise can be reduced. . In addition, since the distance between the power transmission plate 21 and the sound absorbing member 40 becomes short, the sound generated by the power transmission plate 21 can be absorbed more efficiently.

Modification of First Embodiment
With reference to FIG. 4 thru | or FIG. 5, oil smoke collection apparatus 100 'provided in range hood 1' based on a present Example is demonstrated. In addition, in order to avoid repeated description, points different from the above embodiment will be mainly described. The range hood 1 'has a main body 2 having a duct connection portion 6, a cover 50 connected to the upper surface of the main body 2 and having a part of the motor 30 therein, and an upper concave for collecting steam, oil smoke, etc. A thin hood portion 3 having an inner surface panel 4 on the inner surface, and a flow straightening plate 5 for straightening air between the inner surface panel 4 and the inner surface panel 4.

The oil smoke collecting apparatus 100 ′ is provided inside the main body 2 and the cover 50. The oil smoke collecting apparatus 100 ′ includes a motor 30, a fan 20 attached to a rotating shaft 31 of the motor 30 to generate a flow of air, and a fan casing 10 including the fan 20 therein. The fan 20 is a high static pressure sirocco fan, and in the present embodiment, sucks air including oil smoke and the like from the suction port 7 located below and forms an exhaust flow directed in the horizontal direction. The fan 20 has a power transmission plate 21 connected to the rotation shaft 31 of the motor 30 and a plurality of fins around the power transmission plate 21.

The communication port 13 is provided on the upper surface of the fan casing 10 so as to face the suction port 11 provided on the lower surface of the fan casing 10. The fan 20 is disposed below the communication port 13, the main body of the motor 30 is disposed above the communication port 13, and the rotary shaft 31 of the motor 30 is disposed to cross the communication port 13. The outer edge E of the communication port 13 is provided so as to be the same as the edge formed from the outer diameter L of the fan 20 or closer to the rotation shaft 31 than the edge formed from the outer diameter L of the fan 20.

The sound absorbing material 40 ′ is provided on the inner surface side of the main body 2 near the connecting portion with the cover 50 on the opposite side to the suction port 11 across the communication port 13 in a larger range than the cover 50. By providing the sound absorbing material 40 ′ in this manner, the communication port 13 spatially communicates with the fan 20 and the sound absorbing material 40 ′. That is, the fins 22 of the fan 20 serving as a sound generation source and the sound absorbing material 40 ′ have a positional relationship in which the fins 22 spatially communicate with each other through the communication port 13. Further, since the communication port 13 is on the motor 30 side (upper side) than the fan 20, it is not on the air flow path described above, and the sound absorbing material 40 ′ disposed further above the communication port 13 is It is disposed at a position not on the above-described air flow path.

As described above, in order to facilitate the transmission of sound, the communication port 13 in which the fan 20 and the sound absorbing material 40 'are spatially communicated is provided, and the sound absorbing material 40' is provided outside the flow path of the air containing oil. Since the sound absorbing material 40 'is not soiled and does not resist air flow, noise generated by the fan 20 can be transmitted into the room without reducing the performance and cleaning performance of the air suction and discharge. The suppressed oil smoke collecting apparatus 100 'can be provided.

Also, the sound absorbing material 40 ′ is provided between the communication port 13 and the first space S 1. That is, since the sound absorbing material 40 'is provided on the inner surface side of the main body 2, the first space S1 is provided between the communication port 13 and the sound absorbing material 40'. Thus, the sound absorbing material 40 'is provided with the first space S1 between it and the communication port 13, so that the sound spreads from the communication port 13 and propagates, so that sound can be absorbed in a wider area, which is efficient Can absorb sound. Moreover, it is preferable that the edge of the sound absorbing material 40 ′ be located outside the outer edge E of the communication port 13 (side away from the rotation shaft 31). Thus, the sound transmitted from the communication port 13 to the outside of the fan casing 10 can be absorbed more efficiently.

In addition, the oil smoke collecting apparatus 100 'includes the cover 50 so as to form a closed second space S2 located in a direction away from the suction port 11, that is, above the sound absorbing material 40'. As described above, by providing the second space S2 closed on the opposite side of the communication port 13 with the sound absorbing material 40 ′ interposed, the sound that can not be absorbed by the sound absorbing material 40 ′ is propagated to the inside of the cover 50. In this way, the sound that can not be absorbed can be absorbed by the reflection in the cover 50 and can be prevented from propagating out of the oil smoke collecting apparatus 100 ′.

Second Embodiment
The oil smoke collecting apparatus 100A provided in the range hood 1A according to the present embodiment will be described with reference to FIGS. 6 to 8. In addition, in order to avoid repeated description, points different from the above embodiment will be mainly described. The range hood 1A has a duct connection portion 6 and is thin, having a main body 2A having an oil smoke collecting apparatus 100A inside, and an upwardly concave inner surface panel 4 for collecting steam, oil smoke, etc. A hood portion 3 and a straightening vane 5 for straightening air between the inner panel 4 are provided. The hood portion 3 is connected to the main body 2A so as to communicate with the suction port 7 provided in the inner surface panel 4.

The oil smoke collecting apparatus 100A is provided inside the main body 2A. The oil smoke collecting apparatus 100A includes a motor 30, a fan 20 attached to a rotating shaft 31 of the motor 30, which generates a flow of air, and a fan casing 10 including the fan 20 therein. The fan 20 is a high static pressure sirocco fan, and in the present embodiment, sucks air including oil smoke and the like from the suction port 7 located below and forms an exhaust flow directed in the horizontal direction. The fan 20 has a power transmission plate 21 connected to the rotation shaft 31 of the motor 30 and a plurality of fins around the power transmission plate 21.

In the present embodiment, the main body of the motor 30 is disposed on the upper side of the communication port 13 and the rotation shaft 31 of the motor 30 is disposed to cross the communication port 13. May be arranged to enter the inside of the fan 20. However, as in the present embodiment, by providing at least a part of the motor 30 to be located in a direction away from the suction port 11 rather than the portion P on the communication port 13 side of the fan 20 most, Since 30 does not become a resistance, while being able to exhaust more efficiently, a noise can be reduced. Further, since the distance between the motor 30 and the sound absorbing material 40A becomes short, the sound generated by the motor 30 can be absorbed more efficiently.

The sound absorbing material 40A is provided on the opposite side to the suction port 11 across the communication port 13 so as to substantially cover the inside of the main body 2A so as to cross the main body of the motor 30. By providing the sound absorbing material 40A in this manner, the communication port 13 spatially communicates with the fan 20 and the sound absorbing material 40A. That is, the fins 22 of the fan 20 serving as a sound generation source and the sound absorbing material 40A are in a positional relationship spatially communicated with each other through the communication port 13. Further, since the communication port 13 is on the motor 30 side (upper side) than the fan 20, it is not on the above-described air flow path, and is further on the upper side than such communication port 13 and the air does not flow Since the sound absorbing material 40A disposed inside is not on the above-described air flow path, the sound absorbing material 40A is disposed at a position where air including oil smoke does not enter.

As described above, by providing the communication port 13 in which the fan 20 and the sound absorbing material 40A are spatially communicated in order to facilitate the transmission of sound, the sound absorbing material 40A is provided outside the flow path of the air containing oil. Since the sound absorbing material 40A is not contaminated and does not become a resistance to the flow of air, the performance of exhaust and exhaustion and the cleaning property are not reduced, and the noise generated by the fan 20 is suppressed from being transmitted to the room The oil smoke collecting apparatus 100A can be provided.

Further, the sound absorbing material 40A is provided between the communication port 13 and the first space S1. That is, since the communication port 13 is provided at a position crossing the rotation shaft 31 of the motor 30, and the sound absorbing material 40A is disposed so as to cross the main body of the motor 30, the height of the main body of the motor 30 is extended over the inner surface of the main body 2A. A first space S1 about 1/3 of the height is provided. As described above, the sound absorbing material 40A is provided with the first space S1 between the sound absorption member 40A and the communication port 13, so that the sound spreads from the communication port 13 and propagates. It can absorb sound.

Further, the oil smoke collecting apparatus 100A is disposed inside the main body 2A so as to form a closed second space S2 positioned away from the suction port 11, ie, above the sound absorbing material 40A. Ru. As described above, by providing the second space S2 closed on the opposite side of the communication port 13 with the sound absorbing material 40A interposed, the sound that can not be absorbed by the sound absorbing material 40A is propagated to the inside of the main body 2A. As a result, the sound that can not be absorbed can be absorbed by the reflection in the main body 2A, and can be prevented from propagating outside the oil smoke collection device 100A.

Third Embodiment
The oil smoke collecting apparatus 100B provided in the range hood 1B according to the present embodiment will be described with reference to FIGS. 9 to 10. In addition, in order to avoid repeated description, points different from the above embodiment will be mainly described. The range hood 1B has a duct connection portion 6 and is thin, having a main body 2B internally provided with an oil smoke collecting apparatus 100B, and an upwardly concave inner surface panel 4 for collecting steam, oil smoke, etc. A hood portion 3 and a straightening vane 5 for straightening air between the inner panel 4 are provided. The hood portion 3 is connected to the main body 2B so as to communicate with the suction port 7 provided in the inner surface panel 4.

The oil smoke collecting apparatus 100B is provided inside the main body 2B. The oil smoke collecting apparatus 100B includes a motor 30, a rotating shaft 31 of the motor 30, a fan 20 for generating a flow of air, and a fan casing 10B including the fan 20 therein. Unlike the above embodiment, the motor 30 is provided such that the rotation shaft 31 is in the horizontal direction. The fan 20 is a high static pressure sirocco fan, and in the present embodiment, sucks air including oil smoke and the like from the lower suction port 7 to form an exhaust flow directed in the vertical direction. The fan 20 has a power transmission plate 21 connected to the rotation shaft 31 of the motor 30 and a plurality of fins around the power transmission plate 21.

The fan casing 10B includes a suction port 11 for sucking air, a discharge port for discharging air sucked from the suction port 11, and a communication port 13 provided to face the suction port 11. When the motor 30 is energized and the fan 20 inside the fan casing 10B rotates, air including oil smoke and the like is sucked from the gap between the current plate 5 and the inner panel 4. The air is drawn into the interior of the fan casing 10B from the suction port 7 opened at the substantially central portion of the inner surface panel 4 and the suction port 11 opened substantially vertically through the flue 8. The oil contained in the air sucked into the fan casing 10B is removed from the air by colliding with and adhering to the fins 22 of the fan 20. The air from which oil is removed forms an exhaust flow in the centrifugal direction (vertical direction) of the fan 20 and is discharged from the exhaust port. The air flow (flow path) generated by the rotation of the fan 20 is sucked in the direction from the front side to the back side at the suction port 11 (from the left to the right in the view of FIG. 10) and centrifuged therefrom. It is a flow (flow path) that changes into the direction perpendicular to the direction and is discharged from the discharge port.

The communication port 13 is provided on the rear surface of the fan casing 10B so as to face the suction port 11 provided on the front surface of the fan casing 10B. The fan 20 is disposed on the front side of the communication port 13, the main body of the motor 30 is disposed on the back side of the communication port 13, and the rotation shaft 31 of the motor 30 is disposed to cross the communication port 13. The outer edge of the communication port 13 is provided so as to be located inside the edge formed from the outer diameter of the fan 20 or the outer diameter of the fan 20, that is, closer to the rotation axis 31.

The sound absorbing material 40B is provided on the opposite side to the suction port 11 across the communication port 13 and in contact with the entire inner surface on the back side of the main body 2B. By providing the sound absorbing material 40B in this manner, the communication port 13 spatially communicates with the fan 20 and the sound absorbing material 40B. That is, the fins 22 of the fan 20 serving as a sound generation source and the sound absorbing material 40 B are in a positional relationship in which they are spatially communicated via the communication port 13. Further, since the communication port 13 is on the motor 30 side (rear side) from the fan 20, it is not on the above-described air flow path, it is further on the rear side than such a communication port 13 and air does not flow The sound absorbing material 40B disposed in the main body 2B and in contact with the inner surface on the back side is not located on the above-described air flow path, and is disposed at a position where air including oil smoke does not enter.

As described above, by providing the communication port 13 in which the fan 20 and the sound absorbing material 40B are in spatial communication with each other to facilitate sound transmission, the sound absorbing material 40B is provided outside the flow path of the air containing oil. Since the sound absorbing material 40B is not soiled and does not become air flow resistance, the noise generated by the fan 20 is prevented from being transmitted to the room without reducing the performance of the air intake and exhaust and the cleanability. Oil smoke collecting apparatus 100B can be provided.

Further, the sound absorbing material 40B is provided between the communication port 13 and the first space S1. That is, the communication port 13 is provided at a position crossing the rotation shaft 31 of the motor 30, and the sound absorbing material 40B is disposed in contact with the entire inner surface of the back surface of the main body 2B. A first space S1 is provided over the inner surface of the housing. As described above, the sound absorbing material 40B is provided with the first space S1 between the sound absorbing material 40 and the communication port 13, so that the sound spreads from the communication port 13 and propagates, so that sound can be absorbed in a wider area, and the efficiency is improved. It can absorb sound.

<Modification of Third Embodiment>
With reference to FIG. 11, oil smoke collection apparatus 100 B 'provided in range hood 1 B' based on a present Example is demonstrated. In addition, in order to avoid repeated description, points different from the above embodiment will be mainly described. Range hood 1B 'is the same as that of the above-mentioned 3rd Example except arrangement | positioning of sound-absorbing material 40 B' in the main body 2B described below.

The sound absorbing material 40B 'is provided on the opposite side to the suction port 11 across the communication port 13 and on the back side of the main body 2B so as not to be in contact with the inner surface. By providing the sound absorbing material 40B 'in this manner, the communication port 13 spatially communicates with the fan 20 and the sound absorbing material 40B'. That is, the fins 22 of the fan 20 serving as a sound generation source and the sound absorbing material 40B 'are in a positional relationship in spatial communication with each other through the communication port 13. Further, since the communication port 13 is on the motor 30 side (rear side) from the fan 20, it is not on the above-described air flow path, it is further on the rear side than such a communication port 13 and air does not flow The sound absorbing material 40B 'disposed in the main body 2B is disposed at a position where air including oil smoke does not enter since it is not on the above-described air flow path.

As described above, in order to facilitate the transmission of sound, the communication port 13 that spatially connects the fan 20 and the sound absorbing material 40B 'is provided, and the sound absorbing material 40B' is provided outside the flow path of the air containing oil. Therefore, the noise generated by the fan 20 can be transmitted to the room without reducing the performance of the intake and exhaust and the cleanability since the sound absorbing material 40B 'is not contaminated and does not become a resistance of the air flow. Can be provided.

Further, the sound absorbing material 40B 'is provided between the communication port 13 and the first space S1. That is, since the communication port 13 is provided at a position crossing the rotation shaft 31 of the motor 30, and the sound absorbing material 40B 'is disposed on the back side of the main body 2B and close to the back surface of the motor 30, A first space S1 is provided across the width of the main body of the motor 30 on the back side main body 2B. As described above, the sound absorbing material 40B 'is provided with the first space S1 between the sound absorbing material 40B and the communication port 13, so that the sound spreads from the communication port 13 and propagates, so that sound can be absorbed in a wider area, which is efficient. Can absorb sound.

Further, the oil smoke collecting apparatus 100B ′ is sound-absorbed inside the main body 2B so as to form a closed second space S2 which is located away from the suction port 11, ie, on the back side than the sound absorbing material 40B ′. Material 40B 'is arrange | positioned. As described above, by providing the second space S2 closed on the opposite side of the communication port 13 with the sound absorbing material 40B 'interposed, the sound that can not be absorbed by the sound absorbing material 40B' can be transmitted to the inside of the main body 2B. By this, sound that can not be absorbed can be absorbed by reflection in the main body 2B, and it can be prevented from propagating out of the oil smoke collecting apparatus 100B '. Although the second space S2 is closed in the present embodiment, the second space S2 may partially communicate with the first space S1.

The present invention is not limited to the illustrated embodiments, and can be implemented with a configuration that does not deviate from the contents described in the respective claims. That is, although the present invention has been particularly illustrated and described primarily with respect to particular embodiments, it should be appreciated that the present invention may be implemented in any number of such embodiments without departing from the spirit and scope of the invention. Various modifications can be made by those skilled in the art in other detailed configurations.

For example, although the above-described oil and smoke collecting apparatus is all provided in the cooker hood, it may be provided in a lamp provided above the table.

Reference Signs List 1 range hood 2 main body 3 hood portion 4 inner surface panel 5 flow straightening plate 6 duct connection portion 7 suction port 8 flue 100 oil smoke collecting device 10 fan casing 11 suction port 12 discharge port 13 communication port 20 fan 21 power transmission plate 211 ring portion 212 center portion 213 spoke portion 214 power transmission plate opening 22 fin 30 motor 31 rotary shaft 32 motor attachment 40 sound absorbing material 50 cover S1 first space S2 second space E outer edge of communication opening L fan outer diameter P most of fan Communication port side

Claims

Motor,
A fan attached to the rotation shaft of the motor to generate an air flow;
A fan casing including the fan inside;
An oil smoke collecting apparatus comprising
The fan casing is
An intake port for inhaling the air;
An outlet for discharging the air;
A communication port provided to face the suction port;
Have
A sound absorbing material is provided on the opposite side of the communication port with the suction port,
The communication port spatially communicates the fan and the sound absorbing material.
The outer edge of the communication port is provided to be positioned the same as or outside the outer diameter of the fan.
Oil smoke collector.
The oil smoke collecting apparatus according to claim 1, wherein the sound absorbing material is provided with a first space between the sound absorption material and the communication port.
The fan has a power transmission plate connected to the rotating shaft and a plurality of fins around the power transmission plate.
The power transmission plate includes a ring portion connected to the plurality of fins, a central portion connected to the rotation shaft, a spoke portion provided between the central portion and the ring portion, and the ring portion The oil smoke collecting apparatus according to any one of claims 1 to 2, further comprising a plurality of power transmission plate openings surrounded by the central portion and the spokes.
The oil smoke collecting apparatus according to claim 3, wherein the power transmission plate is provided closer to the communication port than a central position of the fan in the rotation axis direction.
5. The oil smoke trap according to any one of claims 1 to 4, wherein at least a part of the motor is provided so as to be located farther from the suction port than a portion closest to the communication port of the fan. Collector.
The second space is located farther from the suction port than the sound absorbing material, and the second space is a space surrounded to attenuate sound. The oil smoke collection apparatus as described in any.
The oil smoke collecting apparatus according to any one of claims 1 to 6, wherein the second space is a closed space.