JP5753680B2 - Oil mist removal device - Google Patents

Description

  The present invention relates to an oil mist removing device, and in particular, an oil mist removing device that is used by being attached to a smoke exhaust duct to capture the oil mist and oil mist contained in the smoke exhaust and reduce the discharge amount. About.

  As an oil mist removing device as described above, moving blades and stationary blades configured as a centrifugal wind turbine are alternately arranged inside a casing having a smoke inlet and a smoke outlet, and the rotor blades are forcibly rotated by a motor. An oil mist removing device is disclosed in which oil mist is discharged while being removed (Patent Document 1). The rotor blades are provided with swirl blades in the direction of the normal to the main surface of the disk-shaped substrate, and the airflow sucked into the casing as the motor rotates is converted into centrifugal flow along the swirl blades. The centrifugal flow collides with the inner surface of the casing, and oil mist contained in the air flow becomes oil droplets. On the other hand, the centrifugal flow after the collision is redirected to the central axis side by a guide vane arranged in the same manner at a stationary blade arranged downstream of the moving blade, and then passed through a through hole near the rotating shaft. It flows out toward the stage blades (there is no detailed explanation in the literature, so it is estimated). The air flow is again converted to centrifugal flow, and it collides with the inner surface of the casing (oil mist formation) → changes direction to the central axis by the stationary vane guide vanes → repeats the process of outflow to the next stage rotor blade, The oil mist is removed in stages.

JP 2002-239323 A

  However, in the above-described conventional apparatus, the moving blade is configured as a centrifugal wind turbine, and the airflow is radially outward (centrifugal flow by the moving blade swirl blade) → impact on the inner surface of the casing → radially inward (stationary blade) The flow resistance is very large because the direction is changed in a broken manner. Therefore, unless the rotor blades are driven to rotate with a strong force using external power such as a motor, a sufficient oil mist removing effect cannot be achieved, leading to a disadvantage that the drive section is enlarged and the energy consumption is increased.

  The problem of the present invention is that no external power supply is required, and oil mist or oil mist contained in the exhaust flow can be efficiently removed only by passive rotation of the wind turbine that has received the exhaust flow. The object is to provide a small, lightweight and energy-saving oil mist removing device.

Means for solving the problems and effects of the invention

In order to solve the above problems, the oil mist removing apparatus of the present invention is
A housing that is configured as a hollow body having an exhaust flow passage inside, and that has an exhaust inlet at one end in the flow direction of the exhaust flow and an exhaust outlet at the other end;
A plurality of coaxially and freely swingable arrangements are arranged in the flow direction so that the rotation axis faces the exhaust flow direction, and a wind receiving surface is formed on the upstream side in the rotation axis direction, and a blower surface is provided on the downstream side. The exhaust flow is formed and loosened by receiving the exhaust flow at the wind receiving surface, and the exhaust flow is decomposed into the axial flow component generated in the rotation axis direction and the centrifugal flow component generated outward in the rotation radial direction on the air blowing surface side. A plurality of axial wind turbines that send out while
It is formed inside the housing so as to surround the outside of the axial flow type windmill in the circumferential direction so that a gap is formed between the outer peripheral edge of the axial flow type windmill and collides with the centrifugal flow of the axial flow type windmill. Thus, an oil mist capturing unit that captures oil mist contained in the exhaust flow is provided.

  According to the above-described configuration of the present invention, the axial flow type windmill is arranged in the casing, and the exhaust flow is introduced into the casing to cause the axial flow type windmill to rotate freely. By colliding the flow, the oil mist contained in the exhaust flow is captured by the oil mist capturing unit. In an axial flow type wind turbine, a part of the received exhaust flow becomes a centrifugal flow component and goes to the oil mist capturing section where the oil mist is captured, while a part of the exhaust flow escapes downstream in the form of an axial flow component. It is. This axial flow component is supplied to the downstream axial wind turbine at the downstream side, and similarly decomposed into a centrifugal flow component and an axial flow component. As a result, as the oil mist contained in the supplied exhaust flow passes through the plurality of stages of the axial flow side wind turbine, it is removed step by step on the centrifugal flow component each time, and the shape of the axial flow component Thus, the flow resistance is reduced by the amount that a part is released downstream. As a result, the oil mist can be sufficiently removed only by rotating the windmill by the idler mechanism that does not require external power supply.

  The oil mist capturing unit may be arranged outside the wind turbine so that the centrifugal flow component generated by the axial flow type wind turbine can collide. In this case, the inner wall surface of the housing is also used as the oil mist capturing unit. With this configuration, the number of parts can be reduced. However, it is of course possible to separately cover the inside of the wall surface of the housing with a plate or sheet that becomes an oil mist capturing part.

  Next, inside the housing, a rectifying unit that rectifies the wind receiving direction of the exhaust flow by the axial flow wind turbine in a direction that improves the rotational torque conversion efficiency of the wind force of the exhaust flow by the axial flow wind turbine, It can be provided so as to be adjacent to the upstream side of the wind turbine. By providing such a rectifying unit, it is possible to more efficiently convert the wind force of the exhaust flow into the rotational force of the axial flow type wind turbine, and it is possible to enhance the oil mist removing ability.

  An axial-flow type windmill can be configured as a moving blade in which a plurality of windmill blades rising in an inclined form from a plane orthogonal to the rotation axis are arranged radially around the rotation axis, and the rectifying unit is a virtual one orthogonal to the rotation axis Wind turbine blades rising in an inclined form from a plane are arranged in a plurality of radial directions around the rotation axis so that the direction of inclination with respect to the plane is opposite to that of the moving blades, and are installed in a non-rotating manner in the enclosure. Can be configured as a wing. By arranging such a stationary blade as a rectifying unit, the airflow passing through the wind turbine blade is supplied in a form that is redirected to the wind receiving surface of the wind turbine blade of the moving blade so as to approach the normal direction thereof. As a result, the rotational efficiency of the rotor blade can be increased.

  Each of the moving blades and the stationary blades includes a plate-like base material arranged in parallel with the virtual plane, and each of the plate-like base materials has an inner edge shape corresponding to the windmill blade around the rotation axis. A structure in which a plurality of radial blades and one edge of a wind turbine blade in the rotating direction of the moving blade or stationary blade are coupled in an inclined form to a plate-like substrate at the corresponding inner peripheral edge of the through window It can comprise as what has. By forming a through window in the plate-like base material and connecting the wind turbine blade in an inclined form to the inner peripheral edge thereof, it is possible to easily adjust the decomposition ratio of the axial flow component and the centrifugal flow component according to the inclination angle of the wind turbine blade. .

  The plate-like substrate of the stationary blade has an outer peripheral edge portion coupled to the inner surface of the housing, and a ventilation cross-sectional area outside the outer peripheral edge of the radial arrangement of the windmill blades around the rotation axis is defined as the outer peripheral edge of the moving blade. It can be set smaller than the ventilation cross-sectional area of the gap formed between the inner surface of the housing. As a result, the generation of an air current that bypasses the outside of the wind turbine blades of the stationary blade and circulates toward the moving blade is suppressed, and the exhaust flow can be efficiently guided to the stationary blade.

  The plurality of rotor blade plate base materials are attached so as not to rotate relative to a common rotating shaft disposed through the plurality of stationary blade plate base materials, and the rotating shafts are attached to the stationary blade plate base members. It can be rotatably supported by a bearing provided at the penetrating position of the material. By attaching the rotor blades to a common rotating shaft so as to be integrally rotatable, the rotational phases of the rotor blades can be matched, and the conversion efficiency of the exhaust flow into the rotor blade rotational force can be further enhanced.

  The moving blade and the stationary blade form a cut in the plate material along a circular shape corresponding to the outer peripheral edge of the wind turbine blade, excluding a section to be a connection edge to the through window of the wind turbine blade. The wind turbine blades can be formed in such a manner that a portion located inside is bent into a slanted shape with a section to be a coupling edge with respect to the remaining portion forming the plate-like base material. In particular, when a metal plate is used as a plate-like substrate, the through window is formed by punching in a form that leaves the connecting edge of the windmill blade, and the portion inside the window that has been punched is bent and knocked out by a punch. There is an advantage that it can be formed inexpensively and efficiently by an extremely simple metal processing of making a windmill blade. On the other hand, when a plastic plate material is used, it is possible to form the windmill shape by die molding, instead of actually performing punching.

  The through window has a trapezoidal shape or a fan shape surrounded by a pair of long side sections formed along the radial direction with respect to the rotation axis and a pair of short side sections formed along the circumferential direction with respect to the rotation axis. The wind turbine blade is formed and can be coupled to the inner peripheral edge of the through window in such a manner that one of the pair of long side sections is a coupling edge. Thereby, a penetration window or a windmill blade can be arrange | positioned more densely with respect to a windmill rotation sweep area | region, and the rotation efficiency of a windmill can be improved.

  A plurality of pairs of moving blades and stationary blades adjacent to the moving blades in the windward direction can be arranged in the rotation axis direction inside the housing. As a result, the ability to remove oil mist in the exhaust flow can be further enhanced. The cross-sectional shape of the casing formed by a plane orthogonal to the rotational axis of the rotor blade is matched with the planar shape of the plate-like substrate forming the stationary blade, and the outer peripheral edge of the plate-like substrate is coupled to the inner surface of the casing. Thus, the stationary blade side plate-like base material can be made to function as a partition plate that partitions the arrangement space of the moving blade on both sides in the axial direction. By dividing the space where the rotor blades are individually arranged (hereinafter referred to as the rotor blade space) with the plate base material of the stationary blades, the exhaust flow that has passed through the stationary blades is supplied to the corresponding blades very efficiently. it can. At this time, if a drain hole is formed for each moving blade space at the bottom of the casing wall portion forming the oil mist capturing portion, it is possible to facilitate the removal of the collected oil mist.

  In the configuration in which the moving blades and the stationary blades are alternately arranged as described above, each of the moving blades and the stationary blades includes a plate-like base material arranged in parallel with the virtual plane, and each of the plate-like base materials has a windmill. A plurality of through windows having an inner edge shape corresponding to the blades are formed radially around the rotation axis, and one edge of the wind turbine blade in the rotation direction of the moving blade or stationary blade is formed on the corresponding inner peripheral edge of the through window. Thus, it can be configured to have a structure in which it is bonded to the plate-like substrate in an inclined form. At this time, the plurality of moving blades and stationary blades are plates on the side where the rising direction from the virtual plane of the windmill blades is the windward direction, the moving blades are the leeward direction, and the windmill blades are not protruding. It can arrange | position alternately so that the opposing space | interval of the main surfaces of a glass-like base material may become smaller than the opposing space | interval of the main surfaces on the opposite side. As a result, the spacing between adjacent stationary blades and moving blades can be reduced, and the exhaust flow rectified by the stationary blades can be guided to the moving blades without being attenuated. The conversion efficiency to can be further increased.

  In addition, an auxiliary wind turbine configured so that the centrifugal flow component is larger than that of the moving blade is disposed in the casing on the further downstream side of the pair of moving blade and stationary blade as described above so as to be free-wheeling. Can do. By disposing the auxiliary wind turbine in which the centrifugal flow generation is superior to the moving blades on the downstream side, the oil mist remaining in the exhaust flow when passing through the moving blade group can be effectively removed.

Explanatory drawing which shows typically the usage form of the oil mist removal apparatus of this invention. The four-plane figure which shows 1st embodiment of the oil mist removal apparatus of this invention. The figure which expands and shows the side view of FIG. The side view and front view of a moving blade. The side view and front view of a stationary blade. The enlarged view which shows the formation form of a windmill blade. Sectional drawing which shows the windmill blade of FIG. 6 with the deformation | transformation aspect. The perspective view which shows the effect | action of a moving blade. The perspective view which shows the effect | action of a stationary blade. The side surface schematic diagram which shows the effect | action of a moving blade with the airflow formation form to the stationary blade of the next stage. The side surface schematic diagram explaining the effect | action in the case of arrange | positioning a moving blade and a stationary blade alternately. The double view which shows 2nd embodiment of the oil mist removal apparatus of this invention. The double view which shows 3rd embodiment of the oil mist removal apparatus of this invention. The front view which shows 4th embodiment of the oil mist removal apparatus of this invention. The side view which shows 5th embodiment of the oil mist removal apparatus of this invention. The three-plane figure which shows 6th embodiment of the oil mist removal apparatus of this invention. The four-plane figure which shows 7th embodiment of the oil mist removal apparatus of this invention. Explanatory drawing which shows the stationary blade, moving blade, and auxiliary windmill which are used for the oil mist removal apparatus of FIG.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a schematic view showing an example of an application form of the oil mist removing apparatus of the present invention. Specifically, this is an example in which the apparatus of the present invention is applied to a smoke exhaust device of a store such as a grilled meat store or a grilled store, and a stove 102 for baking and cooking food is placed in the store 200, above it. A smoke collecting hood 105 for collecting the smoke SM generated in the stove 102 is arranged. One end of an inlet-side smoke exhaust duct 104A made of metal or resin is connected to the smoke collection hood 105. The inlet-side smoke exhaust duct 104 </ b> A penetrates the ceiling plate 103 and enters the ceiling back space, bends sideways, and extends toward the wall 110. On the other hand, an oil mist removing apparatus 1 according to an embodiment of the present invention is fixed to the upper surface of the ceiling plate 103 via a leg portion 81, and the inlet side exhaust smoke is connected to the exhaust inlet 2J that opens on one side surface thereof. The other end of the duct 104A is connected. Further, an exhaust outlet 2D is opened on the other side surface of the oil mist removing apparatus 1, and one end of the outlet side smoke exhaust duct 104B is connected thereto. An exhaust fan 102 driven by a motor is attached to the outside of the wall room of the store 200, and the other end of the outlet side smoke exhaust duct 104B is connected thereto. Note that the oil mist removing apparatus 1 may be fixed in a suspended form on the lower surface of the ceiling plate 103 ′ by the suspension fixture 82.

  FIG. 2 is a four-sided view showing a configuration example of the oil mist removing apparatus 1. The main part of the oil mist removing apparatus 1 includes a housing 2 and a wind turbine unit 6 accommodated therein. The inside of the housing 2 is configured as a hollow body that forms an exhaust flow passage MFD, and an exhaust inlet 2J is formed at one end in the flow direction of the exhaust flow MF, and an exhaust outlet 2D is formed at the other end. An exhaust inflow port 2J is formed at one end in the flow direction of the exhaust flow MF, and an outlet side duct connection portion 26D is formed at the other end.

  The casing 2 is configured in a rectangular parallelepiped shape that is long in the flow direction of the exhaust flow MF by the short side walls 22 and 22, the long side walls 23 and 23, the top plate 24, and the bottom plate 21 made of a metal plate such as a stainless steel plate. . An inlet side duct connection portion 26J for detachably connecting the inlet side smoke exhaust duct 104A is detachably connected to one of the short side walls 22 and 22, and the outlet side smoke exhaust duct 104B is detachably connected to the other side wall. Outlet-side duct connection portions 26D are formed respectively. Each of the connection portions 26J and 26D is a cylindrical metal member that communicates with the inside of the housing 2, and the outer openings are an exhaust inlet 2J and an exhaust outlet 2D, respectively. Further, the leg portion 81 (or the suspension fixture 82) is fixed to the short side walls 22 and 22 or the long side walls 23 and 23. Further, as shown in FIG. 3, the inlet side duct connecting portion 26J and the outlet side duct connecting portion 26D are formed in a cylindrical shape, and the bellows-like inlet side smoke exhaust duct 104A and the outlet side smoke exhaust duct 104B are respectively connected to the respective ducts. The connecting portions 26J and 26D are inserted and attached from the outside.

  Next, the wind turbine unit 6 includes a plurality of moving blades 3 configured as an axial flow type wind turbine and a plurality of stationary blades 4 forming a rectification unit arranged in the exhaust flow direction. The rotor blades 3 are coaxially arranged in the flow direction inside the casing 2 so as to be freely rotatable so that the rotation axis O faces the direction of the exhaust flow MF. FIG. 4 is an enlarged view of one of the rotor blades 3. A wind receiving surface 3 </ b> R is formed on the upstream side in the direction of the rotation axis O, and an air blowing surface 3 </ b> F is formed on the downstream side. As shown in FIG. 8, the exhaust flow MF is idled and rotated in the direction of the rotational axis O and the centrifugal flow generated outwardly in the rotational radius direction. The flow component CRF is sent while being decomposed.

  As shown in FIG. 3, the inner wall surface 2 </ b> W of the housing 2 surrounds the outer side of the moving blade 3 in the circumferential direction, and a gap is formed between the outer peripheral edge of the moving blade 3. The inner wall surface 2W functions as an oil mist capturing section that captures oil mist contained in the exhaust flow MF by colliding the centrifugal flow of the moving blade 3. Further, the stationary blade 4 is disposed adjacent to the upstream side of the moving blade 3 inside the housing 2, and the wind receiving direction of the exhaust flow MF by the moving blade 3 is improved in the rotational torque conversion efficiency of the wind force of the exhaust flow MF. It plays the role of rectifying the direction.

  As shown in FIG. 4, the moving blade 3 is configured such that a plurality of windmill blades 31 rising in an inclined form from a virtual plane VP orthogonal to the rotation axis O are arranged radially around the rotation axis O. Specifically, a disk-like plate-like base material 34 arranged in parallel with the virtual plane VP is provided, and through-holes 32 each having an inner edge shape corresponding to the windmill blade 31 rotate on the plate-like base material 34. A plurality of radial lines are formed around the axis O. 6 and 7, one edge of the wind turbine blade 31 in the rotating direction of the rotor blade 3 is coupled to the plate-like base material 34 in an inclined form at the corresponding inner peripheral edge 33 of the through window 32. Has been.

  On the other hand, as shown in FIG. 5, the stationary blade 4 is configured such that the wind turbine blade 41 rising in an inclined form from the virtual plane VP orthogonal to the rotation axis O is inclined in the direction opposite to the moving blade 3 with respect to the plane VP. Are arranged radially around the rotation axis O and are mounted in the housing 2 so as not to rotate. Specifically, the stationary blade 4 includes a plate-like base material 44 disposed in parallel with the virtual plane VP, and the plate-like base material 44 has through windows 42 each having an inner edge shape corresponding to the wind turbine blade 41. A plurality of radial lines are formed around the rotation axis O. Of the two edges in the rotation direction of the rotor blade 3, the windmill blade 41 is coupled to the plate-like substrate 44 in an inclined form at the inner edge corresponding to the through window 42 at the edge opposite to the rotor blade 3 side. Has been.

  As shown in FIGS. 2 and 11, a plurality of pairs of the moving blades 3 and the stationary blades 4 are arranged in the direction of the rotation axis O inside the housing 2. The cross-sectional shape of the housing 2 by a plane orthogonal to the rotational axis O of the moving blade 3 is identical to the planar shape of the plate-like substrate 44 that forms the stationary blade 4. Then, by connecting the outer peripheral edge of the plate-like base material 44 to the inner surface of the housing 2, the plate-like base material 44 on the stationary blade 4 side partitions the arrangement space of the moving blade 3 on both sides in the axis O direction. Functions as a partition plate. Therefore, the space in which the moving blades 3 are individually arranged (hereinafter referred to as the moving blade space) has a structure partitioned by the plate-like base material 44 of the stationary blade 4. In addition, a drain hole 21d is formed for each moving blade space at the bottom of the wall portion of the casing 2 forming the oil mist capturing portion 2W, so as to facilitate the removal of the collected oil mist.

  Further, as shown in FIGS. 2 and 11, the plurality of moving blades 3 and the stationary blades 4 have the rising direction from the virtual plane of the wind turbine blades 31 and 41, the stationary blade 4 the upwind direction, and the moving blade 3. It is set to be in the leeward direction. Further, the opposing intervals between the main surfaces of the plate-like base materials 34 and 44 on the side where the windmill blades 31 and 41 are not projected are alternately arranged so as to be smaller than the opposing interval between the main surfaces on the opposite side. ing. Thereby, it turns out that the arrangement | positioning space | interval of the adjacent stationary blade 4 and the moving blade 3 is shrunk | reduced.

  As shown in FIGS. 5 and 9, the plate-like base material 44 of the stationary blade 4 is formed in a square shape, and is coupled to the inner surface of the housing 2 at the outer peripheral edge as shown in FIG. 3. Specifically, as shown in FIG. 9, a connecting margin 48 is formed so as to be bent at a right angle along the outer peripheral edge, and a screw hole 48h formed through the connecting margin 48 is formed by a bolt or the like (not shown). Fastened to the wall.

  As shown in FIG. 5, the plate-like base material of the stationary blade 4 is a solid air current blocking region (however, the area between the circular arrangement of the windmill blades 41 and the square outer peripheral edge of the base material) Except for the wind pressure adjusting hole 44a formed in the form). On the other hand, as shown in FIG. 4, the moving blade 3 is formed in a disk shape, and the region between the inner edge of the square-shaped cross section of the housing 2 is a gap space that allows the passage of airflow throughout. That is, as is clear from a comparison between FIG. 4 and FIG. 5, the ventilation cross-sectional area outside the outer peripheral edge of the radial arrangement of the wind turbine blades 41 of the stationary blade 4 around the rotation axis O is It is set smaller than the ventilation cross-sectional area of the gap formed between the outer peripheral edge and the inner surface of the housing 2.

  Next, as shown in FIGS. 4 and 5, the plate-like base materials 34 (FIG. 4) of the plurality of rotor blades 3 are disposed through the plate-like base materials 44 (FIG. 5) of the plurality of stationary blades 4. It is attached so that it cannot rotate relative to the common rotating shaft 5. The rotating shaft 5 is rotatably supported by a bearing 53 provided at a penetrating position of the plate-like base material 44 of the stationary blade 4. Specifically, a shaft fixing sleeve 52 is attached to the center of the plate-like base material 34 of the rotor blade 3 via a bolt 37, and the rotating shaft 5 is set to the shaft fixing sleeve 52 by a set bolt (not shown). It is attached non-rotatably through the like. The bearing 53 is attached to the plate-like base material 44 of the stationary blade 4 on the outer ring and the inner ring on the rotary shaft 5 so as not to rotate.

  As shown in FIGS. 6 and 7, the moving blade 3 and the stationary blade 4 (hereinafter represented by the reference numerals on the moving blade 3 side) are arranged along the circular shape corresponding to the outer peripheral edge of the wind turbine blade 31. A cut is formed in the plate material excluding a section to be the connecting edge 33 to the through window 32 of 41, and a portion located inside the cut of the plate material is bonded to the remaining portion forming the plate-like base material 34 The wind turbine blade 31 is formed in a shape that bends and rises in an inclined form with a section to be the edge 33 as a fold line 33. In particular, when a metal plate material such as a stainless steel plate or an aluminum plate material is used as the plate-like base material 34, the through window 32 is formed by punching in the form of leaving the coupling edge 33 of the windmill blade 31, and the portion inside the window punched as it is, It can be formed inexpensively and efficiently by a very simple metal processing of bending and forming into a windmill blade 31 by knocking out by a punching punch (however, a plastic plate material can also be used. It is also possible to form the windmill by die molding instead of punching).

  The through window 32 includes a pair of long side sections 32r and 33 formed along the radial direction with respect to the rotation axis O, and a pair of short side sections 32p and 32k formed along the circumferential direction with respect to the rotation axis O. It is formed in a trapezoid or fan shape surrounded by. The wind turbine blade 31 is coupled to the inner peripheral edge 33 of the through window 32 in such a manner that one of the pair of long side sections is a coupling edge 33. In this embodiment, the through window 32 (and the wind turbine blade 31) includes a radial inner edge 32r and a fold line (joining edge) 33 formed at predetermined angular intervals in the radial direction with respect to the center of the rotation axis, It is formed in a sector shape (or trapezoidal shape) surrounded by arcuate (or linear) circumferential inner edges 32p and 32k that are connected inside and outside.

  In addition, as shown on the left of FIG. 7, the cross-sectional shape of the windmill blade 31 by the plane which makes a radial direction a normal line is linear, but it shows on the right of the same figure by changing the front end surface shape of the punching punch. As described above, a cross-sectional shape curved in an arc shape is also possible.

  Hereinafter, the operation of the oil mist removing apparatus 1 will be described. In FIG. 1, smoke SM generated in the stove 102 is collected in a smoke collection hood 105. When the exhaust fan 102 is operated, the smoke SM generated in the stove 102 is collected in the smoke collection hood 105 and becomes an exhaust flow MF, and is sucked into the inlet-side smoke exhaust duct 104A and passes through the oil mist removing device 1 to become oil. Mist and smoke particles are removed, the exhaust gas flows into the outlet side smoke exhaust duct 104B as a purified exhaust stream VF, and is discharged to the outside through the exhaust fan 102.

  In the oil mist removing device 1, the rotor blade 3 configured as an axial flow type windmill that can rotate freely receives the exhaust flow MF at the wind receiving surface 3R and rotates, and as shown in FIG. On the side, the exhaust flow MF is sent out while being decomposed into an axial flow component AF generated in the rotation axis O direction and a centrifugal flow component CRF generated outward in the rotation radial direction. As shown in FIG. 10, the centrifugal flow component CRF is released from the outer peripheral surface of the moving blade 34 and collides with the inner wall surface 2W of the housing 2 to cause contamination of oil mist (or smoke particles or the like) contained in the exhaust flow MF. Is captured by the inner wall surface 2W as an oil mist capturing section.

  That is, in the moving blade 3, a part of the received exhaust flow MF becomes a centrifugal flow component CRF and moves toward the inner wall surface 2W, where oil mist is captured, while a part thereof is downstream in the form of an axial flow component AF. Escaped to the side. This axial flow component AF is supplied to the downstream axial flow type wind turbine 3 on the downstream side, and is similarly decomposed into a centrifugal flow component CRF and an axial flow component AF. As a result, the oil mist contained in the supplied exhaust flow MF is removed stepwise on the centrifugal flow component CRF each time it passes through the plurality of stages of moving blades 3 (axial flow side windmills). At the same time, the flow resistance decreases as much as a part of the axial flow component AF is released to the downstream side. As a result, the oil mist can be sufficiently removed only by rotating the windmill by the idler mechanism that does not require external power supply.

  Further, as shown in FIG. 10, the stationary blades 4 are arranged on the upstream side of the moving blades 3, and the stationary blades 4 change the wind receiving direction of the exhaust flow MF emitted from the moving blades 3. It plays the role of a rectification unit that rectifies in the direction IF in which the rotational torque conversion efficiency of the wind force of the exhaust flow MF by the rotor blades 3 is improved. As shown in FIGS. 4 and 5, specifically, the stationary blade 4 includes a windmill blade 41 that rises in an inclined form from a virtual plane VP orthogonal to the rotation axis O, and the inclined direction with respect to the plane VP is the same as that of the moving blade 3. Are arranged radially around the rotation axis O so as to be opposite to each other. The direction of the exhaust flow MF discharged from the moving blade 3 is parallel to the direction of the rotation axis O, but when passing through the wind turbine blade 41 of the stationary blade 4, the exhaust flow MF becomes the wind turbine of the next moving blade 3. It is supplied to the wind receiving surface 3 </ b> R of the blade 31 so as to change its direction so as to approach the normal direction of the wind turbine blade 31 (that is, in the direction IF that improves the rotational torque conversion efficiency), and the moving blade of the next stage The rotational efficiency of 3 is increased. Further, such a pair of moving blades 3 and stationary blades 4 is provided in a plurality of stages, and the plurality of moving blades 3 are provided in a moving phase and coaxially so as to rotate integrally, thereby providing an exhaust flow. The wind force of MF can be converted into the rotational force of the moving blade 3 without waste, and the ability to remove oil mist in the exhaust flow MF is further enhanced.

  In addition, the plate-like base material 44 on the stationary blade 4 side functions as a partition plate that partitions the arrangement space of the moving blade 3 on both sides in the direction of the axis O, and the moving blade space in which the moving blades 3 are individually arranged is provided. Since the structure is defined by the plate-like base material 44 of the stationary blade 4, the generation of an air current that bypasses the outside of the wind turbine blade 41 of the stationary blade 4 and goes around to the moving blade 3 side is suppressed. The exhaust flow MF can be efficiently guided from 3 to the next stationary blade 4. Further, as shown in FIG. 3, a drain hole 21d is formed for each rotor blade space. The drain hole 21d is normally blocked with a bolt, a cap or the like, and oil mist trapped inside is accumulated. If necessary, the drain hole 21d may be opened at any time to remove the oil.

Hereinafter, various modifications of the oil mist removing apparatus 1 will be described.
In the configuration of FIG. 12, an example in which a funnel-shaped drain collecting portion 28 is attached to the lower side of the bottom plate 21 is shown. A drain collecting unit 29 is detachably attached to the bottom of the drain collecting unit 28. The drain hole 21d opened at a position corresponding to each moving blade space in the bottom plate 21 is not blocked by a cap or the like and is in a released state, and the recovered oil flowing down the wall surface of the housing 2 is drained from the drain hole 21d. It falls on the collection unit 28 and is collected in the drain collection unit 29. The drain collecting unit 29 may be removed at any time and the accumulated oil or the like may be discarded. FIG. 13 is an example in which a rack 21 is attached to the lower side of the bottom plate 21 instead of the drain collecting portion of FIG. 12, and a drawer-like oil recovery pan 30 is provided on the rack 21.

  The configuration of FIG. 14 shows a configuration example in which the outer shapes of the housing 2 and the stationary blade 4 are circular. Thereby, the corner | angular part in which a wind tends to stagnate in the housing 2 does not arise, and since airflow resistance reduces, the rotational efficiency of the moving blade 3 and by extension, the capture capability of oil mist can be improved more. In addition, the drain collection part 29 similar to FIG. 12 is provided in the bottom part of the housing 2.

  In the configuration of FIG. 15, the duct connecting portions are formed as flanges 221f at both ends of the housing 2, and the flanges 204f on the ducts 204A and 204B side are overlapped and fastened by a flange fastener such as a bolt nut 221B. .

  In the configuration of the oil mist removing apparatus 100 of FIG. 16, an external casing 120 configured in a bowl shape is provided, and an exhaust flow is sucked from an exhaust inlet 126 formed on the side surface of the top 120T. The housing 2 that partitions the wind turbine unit 6 is fixed in a suspended manner to the top plate 120U inside the lower portion 120B of the external housing 120. The rotating shaft 5 of the rotor blade 3 is arranged in a vertical direction, and the exhaust flow VF is discharged from an exhaust outlet 26 formed on the side wall portion thereof after hitting the bottom surface of the outer casing 120. ing.

  In the configuration of FIG. 17, the housing 2 has a cross-sectional shape in which the bottom portion is curved in an arc shape. In addition, an auxiliary wind turbine 6 configured so that the centrifugal flow component CRF is larger than that of the moving blade 3 is disposed in a rotatable manner in the housing 2 further downstream of the pair of the moving blade 3 and the stationary blade 4. ing. By disposing the auxiliary wind turbine 6 in which the centrifugal flow generation is superior to the moving blade 3 on the downstream side, oil mist remaining in the exhaust flow MF at the time of passing through the moving blade 3 group can be effectively removed. Can do.

  FIG. 18 shows a configuration example of the stationary blade 4, the moving blade 3, and the auxiliary wind turbine 6. The moving blade 3 has the same configuration as in FIG. On the other hand, in the stationary blade 4, the coupling margin portion 48 is formed only in the upper half of the plate-like base material 44 that forms a rectangle. The auxiliary wind turbine 6 has the same configuration as that of the moving blade 3, but the inclination angle of the wind turbine blade with respect to the plate-like base material is set larger than that of the moving blade 3 so that the centrifugal flow component is superior to the axial flow component. Yes. As shown in FIG. 17, the auxiliary wind turbine 6 is provided in the form of a pair of two sheets in which the surfaces on which the wind turbine blades do not protrude are overlapped (in FIG. 17, a plurality of pairs are provided. However, only one set may be provided).

DESCRIPTION OF SYMBOLS 1 Oil mist removal apparatus 2 Housing 2J Exhaust inflow port 2D Exhaust outflow port 2W Oil mist capture | acquisition part 3 Axial flow type windmill 31 Windmill blade 32 Through-window 34 Plate-like base material 4 Stator blade (rectifying part)
41 windmill blade 42 through window 44 plate-like base material 5 rotating shaft 6 auxiliary windmill

Claims (6)

A housing that is configured as a hollow body having an exhaust flow passage inside, and that has an exhaust inlet at one end in the flow direction of the exhaust flow and an exhaust outlet at the other end;
The rotating shaft is oriented coaxially in the flow direction and freely swingable inside the housing so that the rotation axis is directed to the exhaust flow direction, and a wind receiving surface is formed on the upstream side in the rotation axis direction, and a blower surface is provided on the downstream side. The exhaust flow is formed and swung by receiving the exhaust flow at the wind receiving surface, and the exhaust flow is caused to flow axially in the direction of the rotation axis on the air blowing surface side and centrifugal flow generated outward in the rotation radial direction. A moving blade that is disassembled into components and sent out;
A windmill blade, which is arranged adjacent to the upstream side of the moving blade inside the housing and rises in an inclined form from a virtual plane orthogonal to the rotation axis, so that the inclined direction with respect to the plane is opposite to the moving blade. A stationary blade radially disposed around the rotation axis and attached so as not to rotate in the housing;
A gap is formed between the outer peripheral edge of the moving blade and the inner wall surface of the casing, and the oil mist contained in the exhaust flow is made to collide with the inner wall surface by a centrifugal flow discharged from the moving blade. An oil mist removing device for capturing,
Each of the moving blades and the stationary blades includes a plate-like base material arranged in parallel with the virtual plane, and each of the plate-like base materials has an inner edge shape corresponding to the windmill blade, and the rotation axis line A plurality of wind turbine blades in the rotational direction of the moving blades or stationary blades are formed in an inclined form on the plate-like substrate at the corresponding inner peripheral edge of the through window. Combined,
The moving blade forms a cut in the plate material along a circular shape corresponding to the outer peripheral edge of the windmill blade, excluding a section to be a connecting edge of the windmill blade to the through window, The wind turbine blade is formed in a form that bends and forms an inclined shape with a section to be the coupling edge with respect to the remaining portion forming the plate-like base material, which is located inside the cut,
The stationary blade forms a cut in a plate material along a circular shape corresponding to the outer peripheral edge of the windmill blade, excluding a section to be a connection edge of the windmill blade to the through window, and the plate member The windmill blade is formed in such a manner that a portion located inside the cut is bent into an inclined form with a section to be the coupling edge as a fold with respect to the remaining portion forming the plate-like substrate, and the plate-like substrate is formed An oil mist removing device in which the outer peripheral edge portion of the housing is folded and coupled to the inner wall surface of the casing. The plate-like base material of the moving blade is attached so as not to be relatively rotatable with respect to a common rotating shaft disposed through the plate-like base material of the stationary blade, and the rotating shaft is attached to the stationary blade. The oil mist removing apparatus according to claim 1, wherein the oil mist removing apparatus is rotatably supported by a bearing provided at a penetrating position of the plate-like base material. The through window is a trapezoid surrounded by a pair of long side sections formed along a radial direction with respect to the rotation axis and a pair of short side sections formed along a circumferential direction with respect to the rotation axis. 3. The oil mist removing device according to claim 2 , wherein the wind turbine blade is coupled to an inner peripheral edge of the through-window so that one of a pair of the long side sections is the coupling edge. Said rotor blades, a pair of said stationary blade adjacent upwind direction to said animal wings, one of a plurality disposed in that claims 1 to 3 in the rotational axis direction at the inside of the housing 1 The oil mist removing apparatus according to the item . Each of the moving blades and the stationary blades includes a plate-like base material arranged in parallel with the virtual plane, and each of the plate-like base materials has an inner edge shape corresponding to the windmill blade, and the rotation axis line A plurality of wind turbine blades in the rotational direction of the moving blades or stationary blades are formed in an inclined form on the plate-like substrate at the corresponding inner peripheral edge of the through window. Having a combined structure,
The plurality of moving blades and the stationary blades are configured so that the rising direction of the wind turbine blades from the virtual plane is such that the stationary blades are in the windward direction and the moving blades are in the leeward direction, and the windmill blades are not protruding. The oil mist removing apparatus according to claim 4, wherein the opposing surfaces of the main surfaces of the plate-like base material on the side to be formed are alternately arranged so as to be smaller than the opposing intervals of the main surfaces on the opposite side. An auxiliary wind turbine is disposed on the downstream side of the pair of the moving blade and the stationary blade so as to be free to rotate inside the housing and configured to have a centrifugal flow component larger than that of the moving blade. The oil mist removing apparatus according to any one of claims 1 to 5 .