Oil capture device

Abstract

To provide an oil collection device which can achieve downsizing of a filter and enables a fan to be removed easily from a hood body.SOLUTION: In an oil collection device, a fan 22 of a blower 20 can be taken out through a first opening 19 allowing communication between a collection part 16 of a hood body 10 and a suction space part 18. A closing plate 30 having a second opening 31 smaller than the first opening 19 is attached to the collection part 16 so as to be brought into a first state in which the collection part 16 and the suction space part 18 communicate through the second opening 31 and the closing plate 30 covers a part of the first opening 19 and a second state that the closing plate 30 opens the first opening 19. A filter 40 is provided at an upstream side relative to the second opening 31 and the filter 40 can be downsized. The fan 22 can be easily removed from the hood body 10 through the first opening 19.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to an oil collecting device that collects and discharges oil.

Background Art

[0002] Various oil collecting devices have been conventionally known. For example, an oil collecting device called a range hood disclosed in Patent Document 1 is known. This oil collecting device includes a hood body composed of a hood and a blower box, a filter attached to a filter mounting opening of the hood, and a blower. By rotating a fan of the blower, oily smoke and the like are collected into the hood. After the oil content of the collected oily smoke and the like is captured by the filter, the oily smoke and the like flow into the blower box through an opening (air intake port) that communicates the hood with the blower box, are sucked into the blower, and are discharged to the outdoors or the like.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] In such an oil collecting device, when the filter is removed, the fan of the blower is taken out from the hood body through the opening and the filter mounting opening for cleaning or replacement, so the opening and the filter mounting opening are sized to allow the fan to pass through. In such oil collection devices, miniaturization of the filter is required from the standpoint of weight reduction and ease of cleaning. However, making the filter smaller reduces the opening for filter mounting, making it difficult for the fan to pass through the opening, making it difficult to remove the fan from the hood, or making it impossible to remove the fan from the hood because the fan cannot pass through the opening. This can be solved by making the fan smaller, but then the problem arises that the airflow from the blower will be insufficient.

[0005] This invention was made to solve the above problems, and its purpose is to provide an oil collection device that allows for miniaturization of the filter and easy removal of the fan from the hood body. [Means for solving the problem]

[0006] The first oil collection device of the present invention comprises a hood, a blower, a blocking plate, Rotated by a filter motor The hood body comprises a filter and an oil collection member, the hood body having a collection section for collecting oil fumes and the like, a suction space for the blower to suck in the collected oil fumes and the like, and a first opening connecting the collection section and the suction space, the blower having a fan motor and a fan detachably attached to the rotating shaft of the fan motor and capable of passing through the first opening, the fan being provided in the suction space and rotating the fan to suck in and discharge oil fumes and the like into the suction space, the blocking plate having a second opening of a size that the fan cannot pass through in order not to block the flow of oil fumes and the like from the collection section to the suction space, the collection section of the hood body being attached so as to be able to be in a first state in which the collection section communicates with the suction space and covers a part of the first opening, and a second state in which the first opening is open. The size of the filter is larger than the size of the second opening, the filter is positioned upstream of the blocking plate and is detachably attached to the rotating shaft of the filter motor through the second opening, the blocking plate can be in the first state and the second state when the filter is removed, and when the filter is installed, it interferes with the filter so that the blocking plate in the first state cannot be changed to the second state and the blocking plate in the second state cannot be changed to the first state. The oil collection device is characterized in that the oil collection member is provided at a position below the filter and covers the outer peripheral edge of the filter.

[0007] The second oil collection device of the present invention comprises a hood body, a blower, a blocking plate, Rotated by a filter motor The hood comprises a filter and an oil collection member, the hood body having a collection section for collecting oil fumes and the like, a suction space for the blower to suck in the collected oil fumes and the like, and a first opening connecting the collection section and the suction space, the blower having a fan motor and a fan, the fan being detachably attached to the rotation shaft of the fan motor and capable of passing through the first opening in a position where the plane parallel to the first opening and the rotation center line of the fan are parallel, the fan being provided in the suction space and rotating the fan to suck in and discharge oil fumes and the like into the suction space, and the rotation shaft of the fan motor is the first The tip of the rotation shaft of the fan motor is inclined downward, horizontal, or vertical at an angle of 45 degrees or less with respect to a plane parallel to the opening, and the fan is mounted in such a position that its rotation centerline is inclined, horizontal, or vertical at an angle of 45 degrees or less with respect to a plane parallel to the first opening, and the blocking plate has a second opening that is too small for the fan to pass through in order not to block the flow of oil mist, etc., from the collection section to the suction space, and is attached to the collection section of the hood body in such a way that it can be configured in a first state in which the collection section communicates with the suction space and covers a part of the first opening, and in a second state in which the first opening is open. The size of the filter is larger than the size of the second opening, the filter is positioned upstream of the blocking plate and is detachably attached to the rotating shaft of the filter motor through the second opening, the blocking plate can be in the first state and the second state when the filter is removed, and when the filter is installed, it interferes with the filter so that the blocking plate in the first state cannot be changed to the second state and the blocking plate in the second state cannot be changed to the first state. The oil collection device is characterized in that the oil collection member is provided at a position below the filter and covers the outer peripheral edge of the filter.

[0008] The third oil collection device of the present invention comprises a hood body, a blower, a blocking plate, Rotated by a filter motorThe hood comprises a filter and an oil collection member, the hood body having a collection section for collecting oil fumes and the like, a suction space for the blower to suck in the collected oil fumes and the like, and a first opening connecting the collection section and the suction space, the blower having a fan motor and a fan, the fan being detachably attached to the rotation shaft of the fan motor and capable of passing through the first opening in a position where the plane parallel to the first opening and the rotation center line of the fan are perpendicular, the fan being provided in the suction space and rotating the fan to suck in and discharge oil fumes and the like into the suction space, and the rotation shaft of the fan motor is the first opening The tip of the rotation shaft of the fan motor is inclined downward, horizontal, or vertical at an angle greater than 45 degrees with respect to a plane parallel to the opening, and the fan is mounted in such a position that its rotation centerline is inclined, horizontal, or vertical at an angle greater than 45 degrees with respect to a plane parallel to the first opening, and the blocking plate has a second opening that is too small for the fan to pass through in order not to block the flow of oil fumes, etc., from the collection section to the suction space, and is mounted on the collection section of the hood body in such a way that it can be configured in a first state in which the collection section is connected to the suction space and a part of the first opening is covered, and in a second state in which the first opening is open. The size of the filter is larger than the size of the second opening, the filter is positioned upstream of the blocking plate and is detachably attached to the rotating shaft of the filter motor through the second opening, the blocking plate can be in the first state and the second state when the filter is removed, and when the filter is installed, it interferes with the filter so that the blocking plate in the first state cannot be changed to the second state and the blocking plate in the second state cannot be changed to the first state. The oil collection member is more than the filter. Lower position The oil collection device is characterized by being provided so as to cover the outer peripheral edge of the filter.

[0010] In the first, second, and third oil collection devices of the present invention, the shape of the filter and the shape of the second opening are substantially similar, and the size of the filter is larger than the size of the second opening. With this configuration, the flow of oil mist and other substances directly to the second opening without passing through the filter is suppressed, thus maintaining the filter's ability to capture oil and other oily substances.

[0011] In the first, second, and third oil collection devices of the present invention, the filter has a ventilation section, and the size of the ventilation section can be larger than the size of the second opening. This configuration allows the suction force from the blower to be transmitted to the collection unit with minimal obstruction, and the suction force can be effectively utilized to draw in oil fumes and other contaminants using the blower.

[0012] In the first, second, and third oil collection devices of the present invention, the filter is provided at a distance from the blocking plate, and the filter and the blocking plate are parallel to each other in the oil collection device. With this configuration, the distance between the filter and the blocking plate can be made uniform, preventing turbulence from occurring in the oil mist and other substances that have passed through the filter and flowed between the filter and the blocking plate, thus preventing them from flowing outside the second opening. As a result, the oil mist and other substances that have passed through the filter flow smoothly into the second opening.

[0013] In the first, second, and third oil collection devices of the present invention, the collection portion of the hood body has a partition surface that separates the collection portion from the suction space, the first opening is formed in the partition surface, the blocking plate is attached to the partition surface, and the upstream side surface of the blocking plate is located downstream of the upstream side surface of the partition surface. With this configuration, oil fumes and other contaminants that flow into the collection section flow smoothly from the upstream side of the partition surface to the upstream side of the sealing plate.

[0014] In the first, second, and third oil collection devices of the present invention, the collection portion of the hood body has a partition surface that separates the collection portion from the suction space, the first opening is formed in the partition surface, the blocking plate is attached to the partition surface, and the upstream side surface of the blocking plate and the upstream side surface of the partition surface are flush with each other, thus forming an oil collection device. This configuration allows the upstream side of the sealing plate and the upstream side of the partition surface to be continuous, resulting in a good design and easy cleaning.

[0015] In the first, second, and third oil collection devices of the present invention, the collection portion of the hood body has a partition surface that separates the collection portion from the suction space, the first opening is formed in the partition surface, the blocking plate is attached to the partition surface, and the upstream side surface of the blocking plate protrudes further upstream than the upstream side surface of the partition surface. With this configuration, some of the oil fumes and other substances that flow into the collection section hit the side of the blocking plate, and the oily substances such as oil fumes adhere to the side, so the oily substances such as oil fumes can be captured using the blocking plate.

[0016] In the first, second, and third oil collection devices of the present invention, the planar size of the oil collection member is larger than the planar size of the blocking plate, and the blocking plate is located on the inner side of the outer periphery of the oil collection member. With this configuration, some of the oil, such as oil fumes, that flows into the collection section adheres to the sealing plate. The oil adhering to the sealing plate drips onto the filter and beyond the filter. However, the oil that drips onto the filter passes through the filter and falls into the oil collection member, accumulating there. The oil that drips beyond the filter falls directly into the oil collection member and accumulates there as well. Therefore, the oil adhering to the sealing plate is reliably collected in the oil collection member, preventing it from dripping from the hood body.

[0017] In the first, second, and third oil collection devices of the present invention, the oil collection member has a handle for removal, and the sealing plate teeth The oil collection device can have a relief recess in the portion opposite to the handle portion. With this configuration, when removing the oil collection member by placing your hand on the handle, the hand placed on the handle is positioned in the recess of the sealing plate, so you do not put your hand on the sealing plate, thus preventing you from accidentally removing the sealing plate when removing the oil collection member.

[0018] In the first, second and third oil collecting devices of the present invention, the blocking plate has a contact portion, the contact portion does not interfere with the filter when the blocking plate is in the first state, and the distance between the tip end of the contact portion and a contacted portion of the oil collecting member is shorter than the distance between the blocking plate and the filter. According to this configuration, when the blocking plate is accidentally dropped due to unfixing of the blocking plate, the tip end of the contact portion contacts the contacted portion of the oil collecting member before the blocking plate contacts the filter, and the oil collecting member supports the blocking plate, thereby preventing the blocking plate from contacting the filter. Therefore, it is possible to prevent the filter from being detached or damaged due to contact with the filter when the blocking plate is accidentally dropped.

[0019] In the first, second and third oil collecting devices of the present invention, a filter motor mounting member is attached to the hood body so as to straddle the first opening, a filter motor is attached to the filter motor mounting member, the filter is configured to be rotatable by the filter motor, and the blocking plate comprises a cover portion covering the filter motor mounting member. According to this configuration, oil, moisture and the like that cannot be completely captured by the filter hit the cover portion of the blocking plate and do not adhere to the filter motor which is an electric component, so that failure of the filter motor caused by adhesion of oil and moisture can be prevented.

[0020] In the first, second and third oil collecting devices of the present invention, at least a part of the filter motor can protrude to a downstream side of the blocking plate. According to this configuration, the distance between the blocking plate and the filter can be narrowed, so that the efficiency of capturing oil components such as oil fume by the filter can be improved.

[0021] The oil collecting device of the present invention can have the following configuration. (1) comprising a hood body, a blower, a blocking plate, a filter, and an oil collecting member, The hood body has a collection section for collecting oil fumes and the like, a suction space for the blower to suck in the collected oil fumes and the like, and a first opening connecting the collection section and the suction space. The blower has a fan motor and a fan that is detachably attached to the rotating shaft of the fan motor and can pass through the first opening. The fan is provided in the suction space, and by rotating the fan, it sucks in oil fumes and the like into the suction space and discharges them. The blocking plate does not block the flow of oil fumes and the like from the collection section to the suction space. To that end, the oil collection device has a second opening of a size that the fan cannot pass through, and the collection portion of the hood body is attached in such a way that it can be in a first state in which the collection portion communicates with the suction space and covers a part of the first opening, and a second state in which the first opening is open, the filter is provided upstream of the second opening, or on the blocking plate, so as to be removable when the blocking plate is in the first state, and the oil collection member is provided at a position below the filter so as to cover the outer peripheral edge of the filter.

[0022] (2) The hood comprises a hood body, a blower, a sealing plate, a filter, and an oil collection member, wherein the hood body has a collection section for collecting oil fumes, etc., a suction space for the blower to suck in the collected oil fumes, etc., and a first opening connecting the collection section and the suction space, the blower has a fan motor and a fan, the fan is detachably attached to the rotation shaft of the fan motor, and can pass through the first opening in a position where the rotation center line of the fan is parallel to a plane parallel to the first opening, the fan is provided in the suction space, and by rotating the fan it sucks in oil fumes, etc. into the suction space and discharges them, the rotation shaft of the fan motor is tilted downward or horizontal at an angle of 45 degrees or less with respect to the plane parallel to the first opening, The oil collection device is characterized in that the fan is mounted in an inclined position, horizontally or vertically, with respect to a plane parallel to the first opening, at an angle of 45 degrees or less to the rotational centerline of the fan, the blocking plate has a second opening of a size that the fan cannot pass through in order not to block oil fumes and the like flowing from the collection section to the suction space, the collection section of the hood body is mounted in such a way that it can be in a first state in which the collection section communicates with the suction space and covers a part of the first opening, and a second state in which the first opening is open, the filter is provided upstream of the second opening or on the blocking plate so as to be detachable when the blocking plate is in the first state, and the oil collection member is provided at a position below the filter so as to cover the outer peripheral edge of the filter.

[0023] (3) The hood comprises a hood body, a blower, a sealing plate, a filter, and an oil collection member, wherein the hood body has a collection section for collecting oil fumes, etc., a suction space section for the blower to suck in the collected oil fumes, etc., and a first opening connecting the collection section and the suction space section, the blower has a fan motor and a fan, the fan is detachably attached to the rotation shaft of the fan motor, and can pass through the first opening in a position where the rotation center line of the fan is perpendicular to the plane parallel to the first opening, the fan is provided in the suction space section, and by rotating the fan, oil fumes, etc. are sucked into the suction space section and discharged, the rotation shaft of the fan motor is tilted downward or horizontal at an angle greater than 45 degrees with respect to the plane parallel to the first opening, The oil collection device is characterized in that the fan is mounted in a position that is either vertical or horizontal, with the fan's rotational centerline inclined at an angle greater than 45 degrees with respect to a plane parallel to the first opening, or horizontal, or vertical, the blocking plate has a second opening that is too small for the fan to pass through in order not to block oil fumes and the like flowing from the collection section to the suction space, the hood body is mounted in a way that allows the collection section to communicate with the suction space and to cover a part of the first opening, and a second state in which the first opening is open, the filter is provided upstream of the second opening or on the blocking plate so as to be detachable when the blocking plate is in the first state, and the oil collection member is provided below the filter so as to cover the outer peripheral edge of the filter.

[0024] (4) The oil collection device according to any one of (1) to (3), characterized in that the blocking plate can be in the first state and the second state when the filter is removed, but cannot be in the first state or the second state when the filter is installed. (5) The shape of the filter and the shape of the second opening are substantially similar in shape, The oil collection device according to any one of (1) to (4), characterized in that the size of the filter is larger than the size of the second opening. (6) The oil collection device according to any one of (1) to (5), characterized in that the filter has a ventilation portion, and the size of the ventilation portion is larger than the size of the second opening.

[0025] (7) The oil collection device according to any one of (1) to (6), characterized in that the filter is provided at a distance from the blocking plate and the filter and the blocking plate are parallel. (8) The oil collection device according to any one of (1) to (7), characterized in that the collection portion of the hood body has a partition surface portion that separates the collection portion from the suction space portion, the first opening is formed in the partition surface portion, the blocking plate is attached to the partition surface portion, and the upstream side surface of the blocking plate is located downstream of the upstream side surface of the partition surface portion. (9) The oil collection device according to any one of (1) to (7), wherein the collection portion of the hood body has a partition surface portion that separates the collection portion from the suction space portion, the first opening is formed in the partition surface portion, the blocking plate is attached to the partition surface portion, and the upstream side surface of the blocking plate and the upstream side surface of the partition surface portion are flush.

[0026] (10) The oil collection device according to any one of (1) to (7), wherein the collection portion of the hood body has a partition surface portion that separates the collection portion from the suction space portion, the first opening is formed in the partition surface portion, the blocking plate is attached to the partition surface portion, and the upstream side surface of the blocking plate protrudes further upstream than the upstream side surface of the partition surface portion. (11) The oil collection device according to any one of (1) to (10), characterized in that the planar size of the oil collection member is larger than the planar size of the blocking plate, and the blocking plate is located on the inner side of the outer periphery of the oil collection member. (12) The oil collection device according to any one of (1) to (11), characterized in that the oil collection member has a handle portion for removal, and the portion of the sealing plate facing the handle portion has a relief recess.

[0027] (13) The oil collection device according to any one of (1) to (12), characterized in that the blocking plate has a contact portion, the contact portion does not interfere with the filter when the blocking plate is in the first state, and the distance between the tip of the contact portion and the contacted portion of the oil collection member is shorter than the distance between the blocking plate and the filter. (14) The oil collection device according to any one of (1) to (13), characterized in that a filter motor mounting member is attached to the hood body so as to straddle the first opening, a filter motor is attached to the filter motor mounting member, the filter is configured to be rotated by the filter motor, and the sealing plate has a cover portion that covers the filter motor mounting member. (15) The oil collection device according to any one of (1) to (14), characterized in that at least a part of the filter motor protrudes downstream of the blocking plate. [Effects of the Invention]

[0028] According to the first oil collection device of the present invention, a portion of the first opening is covered by a sealing plate, and the filter can be made sized to allow oil fumes and the like flowing through the second opening of the sealing plate to pass through, thus the filter can be made smaller. By removing the filter and the sealing plate, it is possible to reach into the intake space through the first opening, detach the fan from the fan motor's rotating shaft, and remove it through the first opening. Therefore, the filter can be made smaller, and the fan can be easily removed from the hood. The oil in the mist captured by the filter accumulates in the oil collection component, preventing it from dripping from the hood. With the filter installed, the first-state sealing plate cannot be moved to the second state, which opens the first opening. To move the sealing plate to the second state, the filter must be removed. Therefore, when the fan is removed from the hood and then reattached to the fan motor's rotating shaft, the filter is always removed. Furthermore, the presence or absence of the sealing plate can be visually confirmed when installing the filter. This ensures that the oil collection device is operated with the filter installed without moving the sealing plate to the first state.

[0029] According to the second oil collection device of the present invention, the filter can be made smaller and the fan can be easily removed from the hood body. The oil in the mist captured by the filter accumulates in the oil collection component, preventing it from dripping from the hood. Furthermore, if the tip of the fan motor's rotating shaft is tilted downwards, the tip of the rotating shaft will be closer to the first opening, making it easier to remove and install the fan from the rotating shaft by inserting a hand into the suction space through the first opening. If the fan is mounted in such a way that its rotational centerline is inclined at an angle of 45 degrees or less with respect to a plane parallel to the first opening, the fan can be positioned within the intake space so that its rotational centerline is parallel to the plane parallel to the first opening, and then removed through the first opening. This allows the fan to be attached to and detached from the rotating shaft without significantly changing the fan's orientation within the intake space. With the filter installed, the first-state sealing plate cannot be moved to the second state, which opens the first opening. To move the sealing plate to the second state, the filter must be removed. Therefore, when the fan is removed from the hood and then reattached to the fan motor's rotating shaft, the filter is always removed. Furthermore, the presence or absence of the sealing plate can be visually confirmed when installing the filter. This ensures that the oil collection device is operated with the filter installed without moving the sealing plate to the first state.

[0030] According to the third oil collection device of the present invention, the filter can be made smaller and the fan can be easily removed from the hood body. The oil in the mist captured by the filter accumulates in the oil collection component, preventing it from dripping from the hood. Furthermore, if the tip of the fan motor's rotating shaft is tilted downwards, the tip of the rotating shaft will be closer to the first opening, making it easier to remove and install the fan from the rotating shaft by inserting a hand into the suction space through the first opening. If the mounting position of the fan is inclined at an angle greater than 45 degrees with respect to the plane parallel to the first opening, the fan can be changed within the intake space so that its rotational centerline is perpendicular to the plane parallel to the first opening, and then removed through the first opening. This allows the fan to be attached to and detached from the rotating shaft without significantly changing the fan's orientation within the intake space. With the filter installed, the first-state sealing plate cannot be moved to the second state, which opens the first opening. To move the sealing plate to the second state, the filter must be removed. Therefore, when the fan is removed from the hood and then reattached to the fan motor's rotating shaft, the filter is always removed. Furthermore, the presence or absence of the sealing plate can be visually confirmed when installing the filter. This ensures that the oil collection device is operated with the filter installed without moving the sealing plate to the first state. [Brief explanation of the drawing]

[0031] [Figure 1] This is a front view of the oil collection device according to the first embodiment. [Figure 2] Figure 1 is a cross-sectional view AA of the oil collection device. [Figure 3] Figure 1 is a cross-sectional view of the oil collection device BB. [Figure 4] Figure 2 is an enlarged view of section C of the oil collection device shown. [Figure 5] Figure 3 is an enlarged view of section D of the oil collection device shown. [Figure 6] This is a bottom view perspective of the oil collection device. [Figure 7] This is a bottom view perspective of the oil collection device with the rectifier plate hanging down. [Figure 8] This is a bottom view perspective of the oil collection device with the sealing plate, filter, and oil collection components removed. [Figure 9] This is a schematic diagram illustrating the mounting position of the fan. [Figure 10] This is a schematic diagram illustrating the mounting position of the fan. [Figure 11] This is a perspective view illustrating the mounting method. [Figure 12] This is a perspective view of the mounting mechanism in its detached state. [Figure 13] This is an enlarged view of section E in Figure 4. [Figure 14] This is a bottom view perspective of the cover plate. [Figure 15] This is a bottom view perspective of the oil collection device with the fan motor mounting component in a vertical position. [Figure 16] This is a top view perspective of the oil collection member. [Figure 17] This is a perspective view of the oil collection component with its bottom surface facing upwards. [Figure 18] This is a perspective view of the relief recess and the handle portion. [Figure 19] This is an enlarged view of section F in Figure 5. [Figure 20] Figure 5 is an enlarged perspective view of section G. [Figure 21] This is a longitudinal cross-sectional view of an oil collection device showing a second embodiment. [Figure 22] This is a bottom view perspective of the oil collection device in the second embodiment, with the rectifier plate hanging down. [Figure 23]This is a bottom view perspective of the oil collection device in the second embodiment with the sealing plate, filter, and oil collection member removed. [Modes for carrying out the invention]

[0032] A first embodiment of the oil collection device of the present invention will be described with reference to the drawings. The overall configuration of the oil collection device will be explained with reference to Figures 1 to 8. Oil collection device 1 comprises a hood body 10, a blower 20, a blocking plate 30, a filter 40, and an oil collection component 50, and is known as a range hood. Oil collection devices are not limited to range hoods; they also include air purifiers that can collect oil, fryer hoods installed above fryers in convenience stores, and oil mist removal devices that collect scattered oil in factories. As shown in Figures 2 and 3, the hood body 10 has a hood 11 and a blower box 12. The hood 11 has a concave shape that opens downwards with a horizontal surface portion 14 and a downward-facing peripheral surface portion 15, and has a collection section 16 for collecting oil fumes and the like. Note that the collection section 16 can also be made with only the horizontal surface portion 14 without the downward-facing peripheral surface portion 15. Oil fumes and the like include oil, smoke, moisture, air, etc.

[0033] A rectifier plate 17 is provided on the hood 11, facing the lateral surface portion 14, and the rectifier plate 17 covers the opening side of the collection portion 16, so that the blocking plate 30, filter 40, and oil collection member 50 are not visible, as shown in Figure 6. There is a gap between the inner circumferential surface 15a of the circumferential portion 15 and the outer circumferential surface 17a of the rectifier plate 17, and oil fumes and the like flow into the collection portion 16 through this gap. As shown in Figure 7, the rectifier plate 17 can be positioned in a hanging, vertical orientation, which allows the oil collection member 50 and the filter 40 to be visually inspected. As shown in Figure 2, the blower box 12 is installed adjacent to the lateral surface 14 of the hood 11. The blower box 12 is equipped with a flue member 13 for circulating the collected oil mist, etc., to the blower 20, and has a suction space 18 for the blower 20 to suck in the collected oil mist, etc. In other words, the lateral surface 14 is a partition surface that separates the collection section 16 and the suction space 18.

[0034] The central portion of the horizontal surface 14 is recessed upward, and a first opening 19 is formed on the upper surface of the recessed portion 14a, connecting the collection portion 16 and the suction space portion 18. The portion of the lateral surface 14 where the first opening 19 is formed is made higher than the portion upstream of the recessed portion 14a where oil fumes and the like flow in. The first opening 19 is large enough for the fan 22, which will be described later, to pass through. In this embodiment, the hood 11 is made up of multiple plate materials, but it is not limited to this.

[0035] The hood body 10 can have the following configuration. A hood body in which the hood 11 and the blower box 12 are integrated into one unit. A hood body in which the inside of the hood 11 is divided into a collection section 16 and a suction space section 18 by a vertical surface, and a first opening 19 is formed on the vertical surface that connects the collection section 16 and the suction space section 18. In this configuration of a hood body, the vertical surface is the partition surface. In other words, the hood body 10 can have a configuration that includes a collection section 16, a suction space 18, a partition surface that separates the collection section 16 and the suction space 18, and a first opening 19 formed in the partition surface that connects the collection section 16 and the suction space 18.

[0036] As shown in Figure 2, the blower 20 includes a fan 22 and a fan motor 23 located inside the casing 21, and the fan 22 is detachably attached to the rotating shaft 24 of the fan motor 23. The blower 20 is installed so as to communicate with the flue member 13 of the blower box 12, with the casing 21 and fan 22 positioned within the suction space 18. The fan 22 rotates to draw oil fumes and the like into the suction space 18, draw them into the casing 21 through the suction port 25, discharge them through the discharge port 26, and expel them outdoors through a duct or the like (not shown).

[0037] As shown in Figures 4 and 5, the blocking plate 30, filter 40, and oil collection member 50 are arranged within the recessed portion 14a of the lateral surface portion 14, spaced apart in the direction of flow of oil mist, etc. In this embodiment, the blocking plate 30, filter 40, and oil collection member 50 are arranged horizontally, and oil mist, etc. flows from bottom to top. The blocking plate 30 has a second opening 31 in order not to block the flow of oil fumes, etc., from the collection section 16 to the suction space 18. The second opening 31 is smaller than the first opening 19 and is too small for the fan 22 to pass through. The blocking plate 30 is attached to the portion of the hood 11's lateral surface 14 that forms the first opening 19, such that the entire second opening 31 communicates with the first opening 19, the collection section 16 communicates with the suction space 18, and covers a portion of the first opening 19.

[0038] The filter 40 is installed upstream of the blocking plate 30 in the flow direction of oil mist, etc., and captures oily components such as oil mist as it passes through. In this embodiment, the filter 40 is installed below the blocking plate 30. The oil collection member 50 is positioned below the filter 40 and collects oil that drips from the sealing plate 30 and the filter 40, preventing the dripped oil from falling from the hood 11.

[0039] Next, I will explain how to install fan 22. As shown in Figure 2, the shaft insertion hole 27 of the fan 22 is inserted into the rotating shaft 24 of the fan motor 23, and is fixed in place by a quick-release device (not shown) provided at the tip of the rotating shaft 24 to prevent it from coming off. For example, the fan is fixed in place by screwing a nut into a screw groove formed at the tip of the rotating shaft 24. The quick-release device can also be a one-touch quick-release device such as the one disclosed in Japanese Patent Publication No. 5728481. Therefore, the fan 22 can be easily attached to and detached from the rotating shaft 24 of the fan motor 23.

[0040] The mounting position of fan 22 will be explained based on Figures 9 and 10. Figures 9 and 10 are schematic diagrams for explaining the mounting position of fan 22 and differ from the actual mounting configuration of fan 22. As shown in Figure 9, the rotating shaft 24 of the fan motor 23 is inclined at an angle θ of 45 degrees or less downward with respect to a plane parallel to the first opening 19. The plane parallel to the first opening 19 is the plane parallel to the virtual opening surface enclosed by the peripheral portion 19a of the first opening 19. In Figure 9, the lateral surface portion 14 is horizontal, and the first opening 24 is also horizontal. In other words, the virtual opening surface of the first opening 19 is oriented horizontally, so the surface parallel to the first opening 19 is horizontal, and the axis of rotation 24 is inclined downward at an angle θ of 45 degrees or less with respect to the horizontal, such that the tip side approaches the first opening 19.

[0041] As a result, the position of the tip of the rotating shaft 24 is lowered, so the distance between the tip of the rotating shaft 24 and the first opening 19 is shorter and closer to the first opening 19 than when the fan motor 23 is mounted parallel to the plane on which the rotating shaft 24 is parallel to the first opening 19. Therefore, since it is easy to insert a hand into the suction space 18 through the first opening 19 and operate the fan 22 attachment / detachment device, the work of attaching and detaching the fan 22 is made easier.

[0042] Since the rotation axis 24 is inclined with respect to the plane parallel to the first opening 19, the axial line passing through the center of the shaft insertion hole 27 of the fan 22, that is, the rotation centerline 22a of the fan 22, is inclined at an angle θ of 45 degrees or less with respect to the plane parallel to the first opening 19 in the same direction as the rotation axis 24. As a result, the mounting position of the fan 22 is such that the rotation centerline 22a is inclined at an angle θ of 45 degrees or less with respect to the plane parallel to the first opening 19. Therefore, the fan 22 can be moved through the first opening 19 by changing its orientation within the intake space 18 so that its rotational centerline 22a is parallel to a plane parallel to the first opening 19, as shown by the dashed line in Figure 9. In other words, when the fan 22 is mounted in the orientation shown in Figure 9, the first opening 19 is such that the fan 22, with its rotational centerline 22a parallel to a plane parallel to the first opening 19, can pass through. This allows the fan 22 to be attached to and detached from the rotating shaft 24 without significantly changing the orientation of the fan 22 within the suction space 18.

[0043] If the lateral surface portion 14 is inclined with respect to the horizontal, the first opening 19 will be inclined with respect to the horizontal, and the virtual opening surface of the first opening 19 will be inclined with respect to the horizontal. However, even in this case, as explained above, the mounting position of the fan 22 should be such that the rotation centerline 22a is inclined at an angle of 45 degrees or less with respect to the plane parallel to the first opening 19 in the same direction as the rotation axis 24. Furthermore, the mounting orientation of the fan 22 can be such that the rotation centerline 22a is horizontal or vertical.

[0044] As shown in Figure 10, the rotation shaft 24 of the fan motor 23 may be tilted downward at an angle θ greater than 45 degrees with respect to a plane parallel to the first opening 19. In this case, the mounting position of the fan 22 is such that the rotation centerline 22a is inclined in the same direction as the rotation axis 24 at an angle θ greater than 45 degrees with respect to the plane parallel to the first opening 19. As a result, the fan 22 can be moved through the first opening 19 by changing its position so that the rotation centerline 22a is perpendicular to the plane parallel to the first opening 19, as shown by the dashed line in Figure 10.

[0045] In other words, if the fan 22 is in the mounting position described above as shown in Figure 10, the first opening 19 is such that the fan 2, when positioned perpendicular to the plane parallel to the first opening 19, can pass through it. This allows the fan 22 to be attached to and detached from the rotating shaft 24 without significantly changing the orientation of the fan 22 within the suction space 18. If the lateral surface portion 14 is inclined with respect to the horizontal, the first opening 19 will be inclined with respect to the horizontal, and the virtual opening surface of the first opening 19 will be inclined with respect to the horizontal. However, even in this case, as explained above, the mounting position of the fan 22 should be such that the rotation centerline 22a is inclined at an angle greater than 45 degrees in the same direction as the rotation axis 24 with respect to the plane parallel to the first opening 19. Furthermore, the mounting orientation of the fan 22 can be such that the rotation centerline 22a is horizontal or vertical.

[0046] As shown in Figures 9 and 10, the lateral surface portion 14 is straight, and the virtual opening surface of the first opening 19 is also straight, so the surface parallel to the virtual opening surface is considered to be the surface parallel to the first opening 19. However, if the lateral surface portion 14 is curved and the virtual opening surface of the first opening 19 is also curved, the surface parallel to the first opening 19 is defined as follows. If the virtual opening surface of the first opening 19 is curved, the opening area of ​​the first opening 19 will vary depending on the thickness of the lateral surface portion 14 and the viewing direction. Therefore, the direction perpendicular to the direction in which the opening area is largest is defined as the plane parallel to the first opening 19. In other words, when the first opening 19 is viewed as a plane from a certain direction, the parallel plane is the direction perpendicular to the line of sight when the opening area is largest. Furthermore, if the lateral surface portion 14 is a curved surface in the shape of an arc, and the virtual opening surface of the first opening 19 is a curved surface in the shape of an arc, then the surface parallel to the first opening 19 is defined as the surface parallel to the first opening 19, which is the virtual straight line connecting two points on the periphery portion 19a of the first opening 19 that are opposite each other in the direction of the curve, with the center of the first opening 19 as the boundary.

[0047] Next, we will explain the blocking plate 30. As shown in Figure 8, the sealing plate 30 has a rectangular shape and is substantially similar in shape to the first opening 19, and the size of the sealing plate 30 is larger than the first opening 19. Substantially similar shape means that if the sealing plate 30 and the first opening 19 were the same size, they would match by 80% or more. The second opening 31 formed in the blocking plate 30 is circular in shape and too small for the fan 22 to pass through.

[0048] As shown in Figure 4, one side of the cover plate 30 facing the second opening 31 (the right side in Figure 4) is rotatably attached in the vertical direction by mounting means 80 provided on the other side of the lateral surface portion 14 of the hood 11 facing the first opening 19 (the right side in Figure 4). A holding means 90 is provided to hold and release the closing plate 30 in a lateral position, which is the first state described later, extending from the other side (left side in Figure 4) opposite the second opening 31 in the closing plate 30 to the other side (left side in Figure 4) opposite the first opening 19 in the lateral surface portion 14 of the hood 11.

[0049] As a result, the cover plate 30 is attached to the lateral surface portion 14 of the hood 11 so as to be able to rotate vertically between a lateral and a vertical position, with the mounting means 80 on one side as a pivot point. By orienting the blocking plate 30 horizontally, the blocking plate 30 enters a first state in which the entire second opening 31 is in communication with the first opening 19 and a portion of the first opening 19 is covered. By orienting it vertically, the blocking plate 30 enters a second state in which the first opening 19 is open. When the blocking plate 30 is in the second state, the fan 22 can be moved in and out of the first opening 19.

[0050] If the hood body 10 has a configuration in which the partition surface separating the collection section 16 and the suction space section 18 is oriented vertically, then the sealing plate 30, the filter 40, and the oil collection member 50 will be oriented vertically. Therefore, the first state occurs when the sealing plate 30 is in a vertical position, and the second state occurs when it is in a horizontal position, or when it is rotated even further downward than the horizontal position. Thus, the sealing plate 30 is mounted so as to be rotatable in the vertical direction between the first and second states. In this configuration of the hood body 10, the oil collection member 50 is located below the filter 40. It will be installed to cover it.

[0051] The sealing plate 30 may be installed so as to fit into the first opening 19. In this case, the second opening 31 does not communicate with the first opening 19, and the collection section 16 is directly connected to the suction space 18, so the sealing plate 30 will be installed as follows. The sealing plate 30 is installed in such a way that it can be in a first state in which the collection section 16 and the suction space 18 are in communication and a part of the first opening 19 is covered, and a second state in which the first opening 19 is open.

[0052] As shown in Figure 4, the mounting means 80 includes a mounting portion 81 provided on one side facing the second opening 31 in the cover plate 30, and a mounting portion 82 provided on one side facing the first opening 19 in the lateral surface portion 14 of the hood 11. As shown in Figures 11 and 12, the mounting portion 81 has a mounting piece 83 integrally provided at the end of the cover plate 30. The mounting piece 83 is parallel to the cover plate 30 and protrudes to one side of the cover plate 30, and has a guide vertical piece 85. Rectangular mounting holes 84 are formed in the upper and lower surfaces of the mounting piece 83.

[0053] The mounting portion 82 includes a mounting portion insertion hole 86 formed near the first opening 19 of the lateral surface portion 14, and an upward-facing hook-shaped retaining piece 87 integrally provided on the opening edge of the mounting portion insertion hole 86 opposite to the first opening 19, through which the mounting piece 83 is inserted. The retaining piece 87 fits into the mounting hole 84. The cover plate 30 is positioned at an angle relative to the horizontal, such that one side (the side with the mounting portion 81) is higher than the other side. In this position, it is moved diagonally upward, and the mounting piece 83 is inserted into the mounting portion insertion hole 86 at an angle. At this time, the guide vertical piece 85 is in contact with the mounting portion insertion hole 86 and acts as a guide for insertion. Then, when the mounting hole 84 of the mounting piece 83 moves above the retaining piece 87, the cover plate 30 is positioned horizontally to bring the mounting piece 83 into contact with the side surface 14, and the mounting hole 84 is fitted into the retaining piece 87, thereby attaching the mounting part 81 to the part to be mounted 82.

[0054] In this state, the cover plate 30 is in a horizontal position. When the cover plate 30 is turned into a vertical position, the mounting hole 84 comes into contact with the retaining piece 87, supporting the cover plate 30 so that it does not fall. To remove the cover plate 30, move the cover plate 30 upwards from its vertical position so that the mounting piece 83 is above the retaining piece 87. Then, move the cover plate 30 horizontally so that the mounting piece 83 is on the side of the mounting piece insertion hole 86 above the retaining piece 87. Finally, move the cover plate 30 downwards to remove the mounting piece 83 by pulling it out of the mounting piece insertion hole 86. Therefore, the cover plate 30 can be easily positioned horizontally or vertically, and the cover plate 30 can be easily attached and removed.

[0055] As shown in Figure 13, the holding means 90 includes a holding portion 91 provided on the other side opposite the second opening 31 in the closing plate 30, and a held portion 92 provided on the other side opposite the first opening 19 in the lateral surface portion 14 of the hood 11. The retaining part 91 is a component that is attracted to a magnet. The blocking plate 30 is made of a material that is attracted to a magnet, and the entire thing is attracted to a magnet, so there is no need to provide a component that is attracted to a magnet. However, if the blocking plate 30 is made of a material that is not attracted to a magnet, then a component that is attracted to a magnet should be provided. The retaining part 91 may also be a magnet. The held portion 92 is a magnet 93 with an iron piece 94 attached to it, and the iron piece 94 attracts the held portion 91. The held portion 92 may be a magnet alone. If the held portion 91 is a magnet, the held portion 92 can be a component that is attracted to the magnet.

[0056] When the blocking plate 30 is in a sideways position, the iron piece 94 attracts and holds the holding part 91 (a part of the blocking plate 30), and the blocking plate 30 can be held in the first state in a sideways position. By moving the blocking plate 30 downward, the suction between the iron piece 94 and the holding part 91 can be released and separated, and the blocking plate 30 can be rotated to a vertical position to achieve the second state. With this configuration, the blocking plate 30 can be moved to the first state and the second state by simply attaching and detaching the holding part 91 from the iron piece 94 (the part to be held 92) and rotating the blocking plate 30 up and down, thus making it easy to remove and install the fan 22. The mounting means 80 may be a non-removable type such as a hinge. The retaining means 90 may be a screw, a latch, or the like.

[0057] The mounting of the cover plate 30 is not limited to this configuration. Alternatively, one side of the cover plate 30 facing the second opening 31 may be attached to the other side of the partition surface 14 of the hood 11 with a magnet or a retaining member such as a bolt, and the cover plate 30 may be attached in a manner that allows for easy removal. With this mounting configuration, the mounted state is the first state, and the removed state is the second state.

[0058] As shown in Figure 14, a contact portion 32 is provided on the other side of the sealing plate 30 opposite the second opening 31 (the side opposite to the side where the mounting portion 81 is provided). This contact portion 32 protrudes below the lower surface 30a of the sealing plate 30 and is shaped to be held by hand, so it can be used as a handle when attaching, detaching, or rotating the sealing plate 30 up and down. The lower surface 30a of the sealing plate 30 is the surface facing the upstream side in the flow direction of oil mist, etc., that is, the upstream side. Therefore, the installation, removal, and vertical rotation of the blocking plate 30 are easy. The four corners of the cover plate 30 are recessed in an arc shape toward the inward direction in the planar direction (second opening 31), forming relief recesses 33. This relief recess 33 functions when removing the oil collection member 50, as will be described later.

[0059] The portion of the hood 11 where the cover plate is attached (the portion forming the first opening 19) is higher (downstream) than the portion through which oil fumes and the like flow into the first opening 19. Therefore, as shown in Figures 4 and 5, when the cover plate 30 is attached to the hood 11 in the first state, the lower surface 30a of the cover plate 30 is positioned above the lower surface 14b of the hood 14. The lower surface 14b of the hood 14 is the surface facing upstream in the flow direction of oil fumes and the like, i.e., the upstream side, and being positioned above it means being positioned downstream in the flow direction of oil fumes and the like. With this configuration, oil fumes and other substances that flow into the collection section 16 can flow smoothly from the lower surface 14b of the lateral surface section 14 to the lower surface 30a of the sealing plate 30.

[0060] This configuration is not the only option; the following configurations are also possible. The lower surface 14b (upstream side) of the lateral surface portion 14 of the hood 11 and the lower surface 30a (upstream side) of the cover plate 30 are flush with each other. This configuration allows the lower surface 30a of the cover plate 30 and the lower surface 14b of the lateral surface portion 14 to be continuous, resulting in a good design and good ease of cleaning. The lower surface 30a (upstream side) of the cover plate 30 protrudes downward (towards the upstream side) compared to the lower surface 14b (upstream side) of the lateral surface portion 14 of the hood 11. With this configuration, oil fumes and other substances that flow into the collection unit 16 collide with the side surface of the blocking plate 30, causing the oily substances to adhere to the side surface, thus enabling the blocking plate 30 to capture the oily substances.

[0061] Next, I will explain filter 40. As shown in Figure 8, the filter 40 has a circular shape and is larger in size than the second aperture 31. Furthermore, the shapes of the second aperture 31 and the filter 40 may be rectangular or other shapes besides circular, and the size of the filter 40 may be larger than that of the second aperture 31. In other words, the shapes of the filter 40 and the second aperture 31 should be approximately similar, and the size of the filter 40 should be larger than that of the second aperture 31. Approximately similar shapes mean that when the filter 40 and the second aperture 31 are the same size, they will match by 80% or more. With this configuration, the flow of oil mist and other substances to the second opening 31 without passing through the filter 40 is suppressed, thus maintaining the efficiency of oil capture by the filter 40.

[0062] As shown in Figures 4, 5, and 8, the filter 40 has a ventilation section 42 consisting of numerous slit-shaped ventilation holes 41 on its inner side, and a non-ventilated section 43 on its outer side. In Figure 8, the ventilation holes 41 are small, so the ventilation section 42 is shown in black. The size of the ventilation section 42 (the size of the outermost outermost part 42a) is larger than the size of the second opening 31. With this configuration, the suction force from the blower 20 is transmitted to the collection unit 16 through the suction space 18, the first opening 19, the second opening 31, and the ventilation section 42 of the filter 40. This allows the suction force from the blower 20 to be transmitted to the collection unit 16 with minimal obstruction, and the blower 20 can effectively utilize the suction force to draw in oil fumes and other debris. In other words, if the size of the ventilation section 42 is smaller than the size of the second opening 31, the non-ventilated section 43 of the filter 40 will obstruct the suction force transmitted to the collection unit 16.

[0063] As shown in Figure 4, the filter 40 is detachably attached to the rotating shaft 61 of the filter motor 60, the filter 40 and the blocking plate 30 are separated, there is a gap between the upper surface 40a of the filter 40 and the lower surface 30a of the blocking plate 30, and they are parallel, allowing the filter 40 to be rotated by the filter motor 60. The upper surface 40a of the filter 40 is the surface facing downstream in the flow direction of oil mist, etc., that is, the downstream side surface. With this configuration, the filter 40 rotates, allowing for efficient capture of oily substances such as oil fumes. Furthermore, while the blocking plate 30 can be in a first state and a second state when the filter 40 is removed from the rotating shaft 61, it cannot be in a first state or a second state when the filter 40 is attached to the rotating shaft 61 because the filter 40 gets in the way.

[0064] Therefore, with the filter 40 installed, the blocking plate 30 cannot be moved to the second state where the first opening 19 is open. To move the blocking plate 30 to the second state, the filter 40 must be removed. Thus, when the fan 22 is removed from the hood body 1 and then reattached to the rotating shaft 24 of the fan motor 23, the filter 40 is always removed. When installing the filter 40, the presence or absence of the blocking plate 30 can be visually confirmed, thus reliably preventing the oil collection device 1 from being operated with the filter 40 installed without moving the blocking plate 30 to the first state. In other words, if the blocking plate 30 is not in the first state, a large amount of oil smoke and other substances will flow to the first opening 19 without passing through the filter 40, and oil smoke and other substances that have not been sufficiently captured may flow into the suction space 18 and be discharged by the blower 20.

[0065] Furthermore, since the filter 40 is provided at a distance from the blocking plate 30 and the filter 40 and the blocking plate 30 are parallel, the distance between the filter 40 and the blocking plate 30 can be made uniform. This causes turbulence in the oil mist and other substances that have passed through the filter 40 and flow between the filter 40 and the blocking plate 30, making it difficult for them to flow outside the second opening 31, and allowing the oil mist and other substances that have passed through the filter 40 to flow smoothly into the second opening 31.

[0066] The installation of the filter motor 60 will be explained based on Figures 4, 8, and 15. A filter motor mounting member 62 is attached to the hood body 1, for example, the blower box 12, so as to straddle the first opening 19. A filter motor 60 is mounted on this filter motor mounting member 62 so as to face the suction space 18, and the rotating shaft 61 protrudes upstream (downward) from the sealing plate 30 through the filter motor mounting member 62, the first opening 19, and the second opening 31. The filter 40 is attached to the protruding part of the rotating shaft 61 in a manner that allows for easy attachment and detachment, similar to the fan 22. With this configuration, since there is no filter motor 60 other than the rotating shaft 61 between the filter 40 and the blocking plate 30, the gap between the blocking plate 30 and the filter 40 can be narrowed, improving the efficiency of oil capture by the filter 40, such as oil mist.

[0067] This configuration is not the only option; the filter motor 60 may also be mounted on the filter motor mounting member 62 such that a portion of the filter motor 60 protrudes downstream (downward) from the second opening 31 of the blocking plate 30. In other words, it is sufficient to mount the filter motor 60 so that at least a portion of it protrudes downstream of the blocking plate 30. Since the rotating shaft 61 protrudes below the blocking plate 30, the filter 40 can be easily attached and detached. Alternatively, the rotating shaft 61 may be made to protrude above the upper surface 40a of the filter 40, without protruding below the blocking plate 30, and the filter 40 may be attached to the rotating shaft 61.

[0068] The filter motor mounting member 62 has a long, narrow rib shape with a pair of narrow, elongated sections and a plurality of narrow, short sections, and opening windows 63 on both sides in the longitudinal direction. One end in the longitudinal direction is attached to the blower box 12 so as to be rotatable in the vertical direction, and the other end is attached to the blower box 12 so as to be detachable with screws (not shown). The mounting operation can be performed by reaching in through the first opening 19 as follows. By setting the blocking plate 30 to the second state, the screw head (not shown) that secures the other end of the filter motor mounting member 62 becomes visible, and the fixing is released by loosening and removing the screw using a tool from the lower side (upstream side) of the first opening 19. After this, a hand is placed into the first opening 19 and the filter motor mounting member 62 is rotated downwards to hang down. The filter motor mounting member 62 is rotatably mounted in a horizontal position straddling the first opening 19 and in a vertical position hanging downward from the first opening 19, so as not to interfere when the fan 22 is inserted or removed through the first opening 19. The filter motor 60 does not interfere with the first opening 19 when the filter motor mounting member 62 is rotated.

[0069] The rotation direction of the filter motor mounting member 62 is 90 degrees different from the rotation direction of the blocking plate 30. In other words, the blocking plate 30 rotates in opposite directions with respect to the first opening 19 in the lateral surface portion 14, while the filter motor mounting member 62 rotates in a direction 90 degrees different from the direction described above with respect to the first opening 19 in the lateral surface portion 14. This configuration prevents interference between the vertically oriented sealing plate 30 and the filter motor mounting member 62 in the removal position. As mentioned earlier, if the hood body 10 has a partition surface that is oriented vertically, the mounting position is when the filter motor mounting member 62 is oriented vertically, and the removal position is when it is oriented horizontally, or when it is rotated even further downward than the horizontal position.

[0070] As shown in Figure 14, the blocking plate 30 has a cover portion 34 that straddles the second opening 31, and this cover portion 34 has the same shape and size as the filter motor mounting member 62, so that it covers the filter motor mounting member 62 when the blocking plate 30 is in the first state. With this configuration, oil fumes and other substances that pass through the filter 40 do not come into contact with the filter motor mounting member 62, and oil and moisture that were not completely captured by the filter 40 do not adhere to the filter motor 60 or the filter motor mounting member 62. This prevents the filter motor 60, which is an electrical component, from malfunctioning due to the adhesion of oil and moisture. The cover portion 34 has a flow window 35 through which oil fumes and other substances flow. The oil fumes and other substances that flow through this flow window 35 then flow into the suction space 18 through the opening window 63 of the filter motor mounting member 62, thus reducing the resistance of the cover portion 34 and the filter motor mounting member 62 to the flow of oil fumes and other substances.

[0071] Next, the oil collection member 50 will be described. As shown in Figures 16 and 17, the oil collection member 50 has a rectangular horizontal plate 51, a circular opening 52 formed in the horizontal plate 51, a rectangular upward-facing outer peripheral rising plate 53 provided upward along the outer circumference of the horizontal plate 51, and a circular inner peripheral rising plate 54 provided upward along the opening 52, forming an annular oil reservoir 55 that opens upward. The upper surface of the horizontal plate 51 is the bottom surface of the oil reservoir 55, the inner surface of the outer peripheral rising plate 53 is the outer peripheral inner surface of the oil reservoir 55, and the inner surface of the inner peripheral rising plate 54 is the inner peripheral inner surface of the oil reservoir 55. The bottom surface, outer peripheral surface, and inner peripheral surface together constitute the inner surface of the oil reservoir 55.

[0072] The upper part of the corner of the outer perimeter rising plate 53 is curved in an arc towards the downward side (side of the horizontal plate 51), making it easy to grip, and is designated as a handgrip 56. As shown in Figure 18, the handle portion 56 is located on the outer periphery side of the cover plate 30 and faces the relief recess 33. As shown in Figures 5 and 16, a hook portion 57 is provided on one side (right side in Figure 5, diagonally upper right side in Figure 16) opposite the opening 52 in the outer peripheral rising plate 53, and a locking portion 58 is provided on the other side (left side in Figure 5, diagonally lower left side in Figure 16).

[0073] As shown in Figure 5, a hook portion 70 is provided on one side (right side in Figure 5) opposite the first opening 19 on the lateral surface portion 14 of the hood 11, and a locking portion 71 is provided on the other side (left side in Figure 5). The oil collection member 50 is attached to the side surface 14 by hooking the hook portion 57 of the oil collection member 50 onto the hooked portion 70 and locking the locking portion 58 onto the locked portion 71. As shown in Figure 8, the oil collection member 50 (horizontal plate 51) is rectangular in shape and larger in size than the blocking plate 30, while the opening 52 is circular in shape and smaller in size than the filter 40. The inner circumferential rising plate 54 is a truncated cone shape with a lower diameter larger than the upper diameter, and the upper part is smaller than the filter 40.

[0074] As shown in Figure 5, the size of the oil collection member 50 is larger than the size of the sealing plate 30, and the sealing plate 30 is installed so as to be located inside the inner surface of the outer peripheral rising plate 53, which is the outer peripheral inner surface of the oil reservoir portion 55 of the oil collection member 50. With this configuration, some of the oil, such as oil fumes, that flows into the collection unit 16 adheres to the sealing plate 30. The oil adhering to the sealing plate 30 drips onto the filter 40 and beyond the filter 40. The oil that drips onto the filter 40 passes through the filter 40 and falls into the oil collection member 50, where it accumulates in the oil reservoir 55. The oil that drips beyond the filter 40 falls directly onto the oil collection member 50 and accumulates in the oil reservoir 55. Therefore, the oil adhering to the sealing plate 30 is reliably collected in the oil reservoir 55 of the oil collection member 50, preventing it from dripping from the hood 11.

[0075] As shown in Figure 19, the hook portion 57 is formed by bending a portion of the outer peripheral rising plate 53 of the oil collection member 50, and has a wave-shaped hook surface with a lower recess 57a that is continuous with the horizontal plate 51 and curved in an arc in the vertical direction, an intermediate protrusion 57b that is continuous with the upper part of the lower recess 57a and curved in an arc in the vertical direction, and an upper recess 57c that is continuous with the upper part of the intermediate protrusion 57b and curved in an arc in the vertical direction. The hooking portion 70 is fixed to the lateral surface portion 14 with screws 72. The hooking portion 70 has a corrugated hooking surface with a downward convex surface 70a that is curved in an arc in the vertical direction, an intermediate concave surface 70b that is continuous with the upper part of the downward convex surface 70a and is curved in an arc in the vertical direction, and an upward convex surface 70c that is continuous with the upper part of the intermediate concave surface 70b and is curved in an arc in the vertical direction. The shape of the hooking surface is symmetrical to the shape of the hooking surface of the hooking portion 57, and by hooking the hooking surface so that it is in contact with the hooking surface, one side of the oil collection member 50 is supported so as not to fall. Note that a portion of the lateral surface portion 14 can also be processed into a corrugated shape to form the hooking portion 70.

[0076] As shown in Figure 20, the locking portion 58 is a locking recess 59 formed by recessing the upper and lower middle portion of the outer peripheral rising plate 53 in an arc shape. The locking portion 71 is formed by bending a spring material 73 into a shape having a V-shaped locking piece 74, and the spring material 73 is fixed and attached to the lateral surface portion 14. The locking piece 74 is held in an engaged position that supports the other side of the oil collection member 50 so that it does not fall when its tip fits into the locking recess 59 and engages, and when an external force is applied it elastically deforms into an engagement release position that releases the engagement, and elastically returns to the engaged position when the external force is removed. With this configuration, the oil collection member 50 can be easily attached and removed as follows.

[0077] The oil collection member 50 is placed inside the hood 11 in an oblique position relative to the horizontal, with one side having the hook portion 57 facing upwards, and the lower recess 57 of the hook portion 57 is brought into contact with the lower protrusion 70a of the hooked portion 70, thereby temporarily supporting the hook portion 57 side of the oil collection member 50 with the hooked portion 70. In this state, by moving the other side of the oil collection member 50, which is provided with the locking portion 58, upward using the temporary support portion as a fulcrum, the corrugated hooking surface of the hooking portion 57 slides upward along the corrugated hooked surface of the hooked portion 70, causing the other upper part of the outer peripheral rising plate 53 to come into contact with the engaged piece 74 and elastically deform into the disengaged position.

[0078] When the oil collection member 50 is moved further upward and assumes a horizontal position, the locking recess 59 reaches the tip of the engaged piece 74, causing the engaged piece 74 to elastically return to its engaged position, and the engaged piece 74 fits into the locking recess 59 and engages, supporting the other side of the oil collection member 50. At the same time, the lower recess 57a, intermediate protrusion 57b, and upper recess 57c of the hook portion 57 engage with the lower convex surface 70a, intermediate recess 70b, and upper protrusion 70c of the hooked portion 70, respectively, supporting one side of the oil collection member 50 and allowing the oil collection member 50 to be attached.

[0079] To remove the oil collection member 50, the user places their hand on the handle portion 56 and moves the other side of the oil collection member 50 downward. This causes the engaged piece 74 to elastically deform into a disengaged position, releasing the engagement between the engaged recess 59 and the engaged piece 74. The hooking surface of the hook portion 57 then slides off the hooking surface of the hooked portion 70, allowing the oil collection member 50 to be removed. Since the sealing plate 30 has a relief recess 33 facing the handle portion 56 of the oil collection member 50, when removing the oil collection member 50 by placing your hand on the handle portion 56, the hand placed on the handle portion 56 faces the relief recess 33 of the sealing plate 30, making it impossible to place your hand on the sealing plate 30. This prevents accidentally removing the sealing plate 30 when removing the oil collection member 50.

[0080] As shown in Figure 20, the contact portion 32 provided on the sealing plate 30 faces the side plate 51 of the oil collection member 50 when the sealing plate 30 is in the first state, the contact portion 32 is located outside the filter 40 and does not interfere with the filter 40, and the distance L1 between the tip of the contact portion 32 and the side plate 51 of the oil collection member 50 (the part of the oil collection member 50 that is in contact) is shorter than the distance L2 between the lower surface 30a of the sealing plate 30 and the upper surface 40a of the filter 40. Alternatively, the distance L1 may be set to 0 so that the tip of the contact portion 32 contacts the side plate 51. With this configuration, if the sealing plate 30 becomes loose or accidentally falls, the tip of the contact portion 32 will contact the side plate 51 of the oil collection member 50 before the sealing plate 30 comes into contact with the filter 40, so the oil collection member 50 will support the sealing plate 30, thus preventing the sealing plate 30 from coming into contact with the filter 40. Therefore, if the blocking plate 30 accidentally falls, it can be prevented from coming into contact with the filter 40, which could cause the filter 40 to detach or be damaged.

[0081] In this embodiment, the filter 40 is made to rotate, but in a second embodiment, the filter 40 may be fixed in place. For example, as shown in Figures 21, 22, and 23, the second opening 31 of the sealing plate 30, the filter 40, and the opening 52 of the oil collection member 50 are each made rectangular in shape. The blocking plate 30 is installed in the same way as when the filter 40 is rotating. The filter 40 is attached to the cover plate 30 in a detachable manner using magnets, hooks, screws, etc. The oil collection member 50 is installed in the same way as when the filter 40 is rotating. [Explanation of symbols]

[0082] 1... Oil collection device, 10... Hood body, 11... Hood, 12... Blower box, 14... Side surface (partition surface), 15... Peripheral surface, 16... Collection section, 17... Rectifier plate, 18... Suction space section, 19... First opening, 20... Blower, 22... Fan, 22a... Rotation centerline, 23... Fan motor, 24... Rotation shaft, 30... Blocking plate, 31... Second opening, 32... Contact section, 33... Relief recess, 40... Filter, 50... Oil collection member, 55... Oil reservoir section, 57... Hooking section, 58... Locking section, 60... Filter motor, 61... Rotation shaft, 62... Filter motor mounting member, 70... Hooked section, 71... Locked section, 80... Mounting means, 81... Mounting section, 82... Mounted section, 90... Holding means, 91... Holding section, 92... Held section.

Claims

1. It comprises a hood body, a blower, a blocking plate, a filter rotated by a filter motor, and an oil collection member. The hood body has a collection section for collecting oil fumes and the like, a suction space for the blower to suck in the collected oil fumes and the like, and a first opening connecting the collection section and the suction space. The blower has a fan motor and a fan that is detachably attached to the rotating shaft of the fan motor and capable of passing through the first opening, the fan is provided in the suction space, and by rotating the fan it sucks in oil fumes and the like into the suction space and discharges them. The blocking plate has a second opening that is too small for the fan to pass through, in order not to block the flow of oil fumes and the like from the collection section to the suction space section, and is attached to the collection section of the hood body so as to allow for a first state in which the collection section communicates with the suction space section and covers a part of the first opening, and a second state in which the first opening is open. The size of the filter is larger than the size of the second opening. The filter is positioned upstream of the blocking plate and is detachably attached to the rotating shaft of the filter motor through the second opening. The aforementioned sealing plate can be in the first state and the second state when the filter is removed, and when the filter is installed, it interferes with the filter, preventing the sealing plate from being in the first state to the second state, and preventing the sealing plate from being in the second state to the first state. The oil collection device is characterized in that the oil collection member is provided at a position below the filter and covers the outer peripheral edge of the filter.

2. It comprises a hood body, a blower, a blocking plate, a filter rotated by a filter motor, and an oil collection member. The hood body has a collection section for collecting oil fumes and the like, a suction space for the blower to suck in the collected oil fumes and the like, and a first opening connecting the collection section and the suction space. The blower has a fan motor and a fan, the fan is detachably attached to the rotation shaft of the fan motor, and can pass through the first opening in a position where the plane parallel to the first opening and the rotation center line of the fan are parallel, the fan is provided in the suction space, and by rotating the fan it sucks in oil fumes and the like into the suction space and discharges them. The rotation axis of the fan motor is inclined downward, horizontal, or vertical at an angle of 45 degrees or less with respect to a plane parallel to the first opening, and the fan is mounted in such a position that its rotation centerline is inclined, horizontal, or vertical at an angle of 45 degrees or less with respect to a plane parallel to the first opening. The blocking plate has a second opening that is too small for the fan to pass through, in order not to block the flow of oil fumes and the like from the collection section to the suction space section, and is attached to the collection section of the hood body so as to allow for a first state in which the collection section communicates with the suction space section and covers a part of the first opening, and a second state in which the first opening is open. The size of the filter is larger than the size of the second opening. The filter is positioned upstream of the blocking plate and is detachably attached to the rotating shaft of the filter motor through the second opening. The aforementioned sealing plate can be in the first state and the second state when the filter is removed, and when the filter is installed, it interferes with the filter, preventing the sealing plate from being in the first state to the second state, and preventing the sealing plate from being in the second state to the first state. The oil collection device is characterized in that the oil collection member is provided at a position below the filter and covers the outer peripheral edge of the filter.

3. It comprises a hood body, a blower, a blocking plate, a filter rotated by a filter motor, and an oil collection member. The hood body has a collection section for collecting oil fumes and the like, a suction space for the blower to suck in the collected oil fumes and the like, and a first opening connecting the collection section and the suction space. The blower has a fan motor and a fan, the fan is detachably attached to the rotation shaft of the fan motor, and can pass through the first opening in a position where the plane parallel to the first opening and the rotation center line of the fan are perpendicular to each other, the fan is provided in the suction space, and by rotating the fan it sucks in oil fumes and the like into the suction space and discharges them. The rotation axis of the fan motor is inclined downward, horizontally, or vertically at an angle greater than 45 degrees with respect to a plane parallel to the first opening, and the fan is mounted in such a position that its rotation centerline is inclined, horizontally, or vertically at an angle greater than 45 degrees with respect to a plane parallel to the first opening. The aforementioned blocking plate has a second opening that is too small for the fan to pass through, in order not to block the flow of oil fumes, etc., from the collection section to the suction space section, and is attached to the collection section of the hood body so as to be able to switch between a first state in which the collection section is connected to the suction space section and a part of the first opening is covered, and a second state in which the first opening is open. The size of the filter is larger than the size of the second opening. The filter is positioned upstream of the blocking plate and is detachably attached to the rotating shaft of the filter motor through the second opening. The aforementioned sealing plate can be in the first state and the second state when the filter is removed, and when the filter is installed, it interferes with the filter, preventing the sealing plate from being in the first state to the second state, and preventing the sealing plate from being in the second state to the first state. The oil collection device is characterized in that the oil collection member is provided at a position below the filter and covers the outer peripheral edge of the filter.

4. In the oil collection device according to any one of claims 1 to 3, The shape of the filter and the shape of the second opening are substantially similar. An oil collection device in which the size of the filter is larger than the size of the second opening.

5. In the oil collection device according to any one of claims 1 to 3, The oil collection device wherein the filter has a ventilation section, and the size of the ventilation section is larger than the size of the second opening.

6. In the oil collection device according to any one of claims 1 to 3, An oil collection device in which the filter is provided at a distance from the blocking plate, and the filter and the blocking plate are parallel to each other.

7. In the oil collection device according to any one of claims 1 to 3, The collection portion of the hood body has a partition surface that separates the collection portion from the suction space, the first opening is formed in the partition surface, and the sealing plate is attached to the partition surface. An oil collection device in which the upstream side of the sealing plate is located downstream of the upstream side of the partition surface.

8. In the oil collection device according to any one of claims 1 to 3, The collection portion of the hood body has a partition surface that separates the collection portion from the suction space, the first opening is formed in the partition surface, and the sealing plate is attached to the partition surface. An oil collection device in which the upstream side surface of the sealing plate and the upstream side surface of the partition surface are flush.

9. In the oil collection device according to any one of claims 1 to 3, The collection portion of the hood body has a partition surface that separates the collection portion from the suction space, the first opening is formed in the partition surface, and the sealing plate is attached to the partition surface. An oil collection device in which the upstream side surface of the aforementioned sealing plate protrudes further upstream than the upstream side surface of the aforementioned partition surface.

10. In the oil collection device according to any one of claims 1 to 3, An oil collection device in which the planar size of the oil collection member is larger than the planar size of the blocking plate, and the blocking plate is located on the inner side of the oil collection member than the outer side.

11. In the oil collection device according to claim 10, The oil collection device comprises an oil collection member having a handle for removal, and a sealing plate having a relief recess in the portion opposite to the handle.

12. In the oil collection device according to any one of claims 1 to 3, The blocking plate has a contact portion, and the contact portion does not interfere with the filter when the blocking plate is in the first state. An oil collection device in which the distance between the tip of the contact portion and the contacted portion of the oil collection member is shorter than the distance between the blocking plate and the filter.

13. In the oil collection device according to any one of claims 1 to 3, A filter motor mounting member is attached to the hood body so as to straddle the first opening, a filter motor is attached to the filter motor mounting member, and the filter is configured to be rotated by the filter motor. The oil collection device comprises a cover portion that covers the filter motor mounting member, wherein the sealing plate is a cover plate.

14. In the oil collection device according to claim 13, An oil collection device in which at least a portion of the filter motor protrudes downstream of the blocking plate.

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